--- /dev/null
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users. This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it. (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.) You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+ To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+ For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have. You must make sure that they, too, receive or can get the
+source code. And you must show them these terms so they know their
+rights.
+
+ We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+ Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software. If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+ Finally, any free program is threatened constantly by software
+patents. We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary. To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+ The precise terms and conditions for copying, distribution and
+modification follow.
+\f
+ GNU GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License. The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language. (Hereinafter, translation is included without limitation in
+the term "modification".) Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+ 1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+ 2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+ a) You must cause the modified files to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+ b) You must cause any work that you distribute or publish, that in
+ whole or in part contains or is derived from the Program or any
+ part thereof, to be licensed as a whole at no charge to all third
+ parties under the terms of this License.
+
+ c) If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such
+ interactive use in the most ordinary way, to print or display an
+ announcement including an appropriate copyright notice and a
+ notice that there is no warranty (or else, saying that you provide
+ a warranty) and that users may redistribute the program under
+ these conditions, and telling the user how to view a copy of this
+ License. (Exception: if the Program itself is interactive but
+ does not normally print such an announcement, your work based on
+ the Program is not required to print an announcement.)
+\f
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works. But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+ 3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+ a) Accompany it with the complete corresponding machine-readable
+ source code, which must be distributed under the terms of Sections
+ 1 and 2 above on a medium customarily used for software interchange; or,
+
+ b) Accompany it with a written offer, valid for at least three
+ years, to give any third party, for a charge no more than your
+ cost of physically performing source distribution, a complete
+ machine-readable copy of the corresponding source code, to be
+ distributed under the terms of Sections 1 and 2 above on a medium
+ customarily used for software interchange; or,
+
+ c) Accompany it with the information you received as to the offer
+ to distribute corresponding source code. (This alternative is
+ allowed only for noncommercial distribution and only if you
+ received the program in object code or executable form with such
+ an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it. For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable. However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+\f
+ 4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License. Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+ 5. You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or
+distribute the Program or its derivative works. These actions are
+prohibited by law if you do not accept this License. Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+ 6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions. You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+ 7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all. For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices. Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+\f
+ 8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded. In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+ 9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation. If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+ 10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission. For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this. Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+ END OF TERMS AND CONDITIONS
+\f
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+ Gnomovision version 69, Copyright (C) year name of author
+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+ Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+ <signature of Ty Coon>, 1 April 1989
+ Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Library General
+Public License instead of this License.
--- /dev/null
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--- /dev/null
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+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
--- /dev/null
+******************************************************************************
+ README for TAYGA v0.9.2
+******************************************************************************
+
+Last updated 2010-12-12
+
+--------
+Overview
+--------
+
+TAYGA is an out-of-kernel stateless NAT64 implementation for Linux. It uses
+the TUN driver to exchange packets with the kernel, which is the same driver
+used by OpenVPN and QEMU/KVM. TAYGA needs no kernel patches or out-of-tree
+modules, and it is compatible with all 2.4 and 2.6 kernels.
+
+If you're impatient and you know what stateless NAT64 is, you can skip to the
+Installation & Basic Configuration section.
+
+-------------------------------
+Stateless versus Stateful NAT64
+-------------------------------
+
+Most people are familiar with stateful NAT, which allows N:1 address mapping
+by tracking TCP and UDP sessions and rewriting port numbers on each packet.
+Most commonly this is used to translate sessions from multiple "internal"
+hosts (which are numbered with private IPv4 addresses) onto a single global
+IPv4 address on the NAT device's "external" interface.
+
+Stateless NAT does no such session tracking or port number rewriting. It
+simply performs a 1:1 substitution of IP addresses using a mapping table
+provided by the network administrator. For example, an organization whose
+global address allocation was 198.51.100.0/24 but whose hosts were using
+addresses in 192.0.2.0/24 could use a stateless NAT to rewrite 192.0.2.1 into
+198.51.100.1, 192.0.2.35 into 198.51.100.35, etc, in the outbound direction,
+and the reverse in the inbound direction. This is commonly done when an
+organization moves to a new ISP and receives a new IPv4 address delegation of
+the same size as their old delegation but does not want to renumber their
+network.
+
+TAYGA and other stateless NAT64 translators operate in this fashion. When
+translating packets between IPv4 and IPv6, the source and destination
+addresses in the packet headers are substituted using a 1:1 mapping. This
+means that, in order to exchange packets across the NAT64, each IPv4 host must
+be represented by a unique IPv6 address, and each IPv6 host must be
+represented by a unique IPv4 address. How this mapping is performed is
+discussed in the next sections.
+
+In situations where stateful NAT64 is required, TAYGA can be used in
+combination with a stateful IPv4 NAT such as the iptables MASQUERADE target.
+This allows the administrator a great deal more flexibility than if stateful
+NAT were implemented directly in TAYGA.
+
+----------------------
+Mapping IPv4 into IPv6
+----------------------
+
+TAYGA maps IPv4 addresses into the IPv6 network according to RFC 6052. This
+states that a 32-bit IPv4 address should be appended to a designated IPv6
+prefix, which we call the NAT64 prefix, and the resulting IPv6 address can be
+used to contact the IPv4 host through the NAT64.
+
+The NAT64 prefix should be assigned out of a site's global IPv6 address
+allocation. For example, if a site is allocated 2001:db8:1::/48, the prefix
+2001:db8:1:ffff::/96 could be set aside for NAT64. (There are several options
+for the length of the NAT64 prefix, but a /96 is recommended.) The IPv4 host
+198.51.100.10 could then be accessed through the NAT64 using the address
+2001:db8:1:ffff::c633:640a. Conveniently, it is possible to use the syntax
+2001:db8:1:ffff::198.51.100.10 instead.
+
+RFC 6052 also specifies a Well-Known Prefix 64:ff9b::/96 which can be used for
+NAT64 service rather than allocating a prefix from the site's IPv6 address
+block. However, this comes with several restrictions, primarily that hosts
+with private IPv4 addresses (10.x.x.x, 192.168.x.x, etc) cannot be accessed
+through the NAT64. See RFC 6052 for more information.
+
+If NAT64 service is needed for only a few hosts instead of the entire IPv4
+address space, TAYGA can be configured without a NAT64 prefix, and address
+maps can be assigned on a host-by-host basis.
+
+----------------------
+Mapping IPv6 into IPv4
+----------------------
+
+Being a stateless NAT, TAYGA requires that a unique IPv4 address is assigned
+to every IPv6 host that needs NAT64 service. This assignment can be done
+statically by the network administrator, or dynamically by TAYGA from a pool
+of IPv4 addresses designated for this purpose.
+
+Static address mapping is desirable for servers or other hosts requiring a
+well-known address. Statically mapped addresses may be entered into DNS, for
+example.
+
+Dynamic address mapping allows TAYGA to assign IPv4 addresses to IPv6 hosts as
+they are needed. By default, these assignments are guaranteed to remain
+usable for up to two hours after the last packet seen, but they are retained
+for up to two weeks as long as the address pool does not become empty.
+Assignments are written to disk so they persist through a restart of the TAYGA
+daemon, allowing existing TCP and UDP sessions to continue uninterrupted.
+
+(Of course, TAYGA also supports the addressing architecture described in RFC
+6052 in which IPv6 hosts are numbered with "IPv4-translatable IPv6 addresses"
+carved out of the NAT64 prefix.)
+
+----------------------------------
+Installation & Basic Configuration
+----------------------------------
+
+TAYGA uses the GNU Automake/Autoconf system, which requires the `configure`
+script to be run to generate the Makefile prior to building. The --prefix
+and/or --sysconfdir options can be specified to the configure script to
+specify the top-level installation path and tayga.conf file directory,
+respectively.
+
+After unpacking the distribution tar.bz2 file, run:
+
+ # ./configure && make && make install
+
+This will install the tayga executable in /usr/local/sbin/tayga and the sample
+config file in /usr/local/etc/tayga.conf.example.
+
+Next, if you would like dynamic maps to be persistent between TAYGA restarts,
+create a directory to store the dynamic.map file:
+
+ # mkdir -p /var/db/tayga
+
+Now create your site-specific tayga.conf configuration file. The installed
+tayga.conf.example file can be copied to tayga.conf and modified to suit your
+site. Here is a sample minimal configuration:
+
+ tun-device nat64
+ ipv4-addr 192.168.255.1
+ prefix 2001:db8:1:ffff::/96 # replace with a prefix from
+ # your site's address range
+ dynamic-pool 192.168.255.0/24
+ data-dir /var/db/tayga # omit if you do not need persistent
+ # dynamic address maps
+
+Before starting the TAYGA daemon, the routing setup on your system will need
+to be changed to send IPv4 and IPv6 packets to TAYGA. First create the TUN
+network interface:
+
+ # tayga --mktun
+
+If TAYGA prints any errors, you will need to fix your config file before
+continuing. Otherwise, the new nat64 interface can be configured and the
+proper routes can be added to your system:
+
+ # ip link set nat64 up
+ # ip addr add 2001:db8:1::1 dev nat64 # replace with your router's address
+ # ip addr add 192.168.0.1 dev nat64 # replace with your router's address
+ # ip route add 2001:db8:1:ffff::/96 dev nat64 # from tayga.conf
+ # ip route add 192.168.255.0/24 dev nat64 # from tayga.conf
+
+Firewalling your NAT64 prefix from outside access is highly recommended:
+
+ # ip6tables -A FORWARD -s 2001:db8:1::/48 -d 2001:db8:1:ffff::/96 -j ACCEPT
+ # ip6tables -A FORWARD -d 2001:db8:1:ffff::/96 -j DROP
+
+At this point, you may start the tayga process:
+
+ # tayga
+
+Check your system log (/var/log/syslog or /var/log/messages) for status
+information.
+
+If you are having difficulty configuring TAYGA, use the -d option to run the
+tayga process in the foreground and send all log messages to stdout:
+
+ # tayga -d
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+}
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+
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+# Do all the work for Automake. -*- Autoconf -*-
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+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
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+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 16
+
+# This macro actually does too much. Some checks are only needed if
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+# Copyright (C) 2003, 2005 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
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+# Check to see how 'make' treats includes. -*- Autoconf -*-
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+# serial 4
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+# AM_MAKE_INCLUDE()
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+# Fake the existence of programs that GNU maintainers use. -*- Autoconf -*-
+
+# Copyright (C) 1997, 1999, 2000, 2001, 2003, 2004, 2005, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
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+# serial 6
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+# Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
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+# Helper functions for option handling. -*- Autoconf -*-
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+# Copyright (C) 2001, 2002, 2003, 2005, 2008 Free Software Foundation, Inc.
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+# serial 4
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+# serial 2
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+# Check how to create a tarball. -*- Autoconf -*-
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+#
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--- /dev/null
+/*
+ * addrmap.c -- address mapping routines
+ *
+ * part of TAYGA <http://www.litech.org/tayga/>
+ * Copyright (C) 2010 Nathan Lutchansky <lutchann@litech.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <tayga.h>
+
+extern struct config *gcfg;
+extern time_t now;
+
+int validate_ip4_addr(const struct in_addr *a)
+{
+ /* First octet == 0 */
+ if (!(a->s_addr & htonl(0xff000000)))
+ return -1;
+
+ /* First octet == 127 */
+ if ((a->s_addr & htonl(0xff000000)) == htonl(0x7f000000))
+ return -1;
+
+ /* Link-local block 169.254.0.0/16 */
+ if ((a->s_addr & htonl(0xffff0000)) == htonl(0xa9fe0000))
+ return -1;
+
+ /* Class D & E */
+ if ((a->s_addr & htonl(0xe0000000)) == htonl(0xe0000000))
+ return -1;
+
+ return 0;
+}
+
+int validate_ip6_addr(const struct in6_addr *a)
+{
+ /* Well-known prefix for NAT64 */
+ if (a->s6_addr32[0] == WKPF && !a->s6_addr32[1] && !a->s6_addr32[2])
+ return 0;
+
+ /* Reserved per RFC 2373 */
+ if (!a->s6_addr[0])
+ return -1;
+
+ /* Multicast addresses */
+ if (a->s6_addr[0] == 0xff)
+ return -1;
+
+ /* Link-local unicast addresses */
+ if ((a->s6_addr16[0] & htons(0xffc0)) == htons(0xfe80))
+ return -1;
+
+ return 0;
+}
+
+int is_private_ip4_addr(const struct in_addr *a)
+{
+ /* 10.0.0.0/8 */
+ if ((a->s_addr & htonl(0xff000000)) == htonl(0x0a000000))
+ return -1;
+
+ /* 172.16.0.0/12 */
+ if ((a->s_addr & htonl(0xfff00000)) == htonl(0xac100000))
+ return -1;
+
+ /* 192.0.2.0/24 */
+ if ((a->s_addr & htonl(0xffffff00)) == htonl(0xc0000200))
+ return -1;
+
+ /* 192.168.0.0/16 */
+ if ((a->s_addr & htonl(0xffff0000)) == htonl(0xc0a80000))
+ return -1;
+
+ /* 198.18.0.0/15 */
+ if ((a->s_addr & htonl(0xfffe0000)) == htonl(0xc6120000))
+ return -1;
+
+ /* 198.51.100.0/24 */
+ if ((a->s_addr & htonl(0xffffff00)) == htonl(0xc6336400))
+ return -1;
+
+ /* 203.0.113.0/24 */
+ if ((a->s_addr & htonl(0xffffff00)) == htonl(0xcb007100))
+ return -1;
+
+ return 0;
+}
+
+int calc_ip4_mask(struct in_addr *mask, const struct in_addr *addr, int len)
+{
+ mask->s_addr = htonl(~((1 << (32 - len)) - 1));
+ if (addr && (addr->s_addr & ~mask->s_addr))
+ return -1;
+ return 0;
+
+}
+
+int calc_ip6_mask(struct in6_addr *mask, const struct in6_addr *addr, int len)
+{
+ if (len > 32) {
+ mask->s6_addr32[0] = ~0;
+ if (len > 64) {
+ mask->s6_addr32[1] = ~0;
+ if (len > 96) {
+ mask->s6_addr32[2] = ~0;
+ mask->s6_addr32[3] =
+ htonl(~((1 << (128 - len)) - 1));
+ } else {
+ mask->s6_addr32[2] =
+ htonl(~((1 << (96 - len)) - 1));
+ mask->s6_addr32[3] = 0;
+ }
+ } else {
+ mask->s6_addr32[1] = htonl(~((1 << (64 - len)) - 1));
+ mask->s6_addr32[2] = 0;
+ mask->s6_addr32[3] = 0;
+ }
+ } else {
+ mask->s6_addr32[0] = htonl(~((1 << (32 - len)) - 1));
+ mask->s6_addr32[1] = 0;
+ mask->s6_addr32[2] = 0;
+ mask->s6_addr32[3] = 0;
+ }
+ if (!addr)
+ return 0;
+ if ((addr->s6_addr32[0] & ~mask->s6_addr32[0]) ||
+ (addr->s6_addr32[1] & ~mask->s6_addr32[1]) ||
+ (addr->s6_addr32[2] & ~mask->s6_addr32[2]) ||
+ (addr->s6_addr32[3] & ~mask->s6_addr32[3]))
+ return -1;
+ return 0;
+}
+
+static uint32_t hash_ip4(const struct in_addr *addr4)
+{
+ return ((uint32_t)(addr4->s_addr *
+ gcfg->rand[0])) >> (32 - gcfg->hash_bits);
+}
+
+static uint32_t hash_ip6(const struct in6_addr *addr6)
+{
+ uint32_t h;
+
+ h = ((uint32_t)addr6->s6_addr16[0] + gcfg->rand[0]) *
+ ((uint32_t)addr6->s6_addr16[1] + gcfg->rand[1]);
+ h ^= ((uint32_t)addr6->s6_addr16[2] + gcfg->rand[2]) *
+ ((uint32_t)addr6->s6_addr16[3] + gcfg->rand[3]);
+ h ^= ((uint32_t)addr6->s6_addr16[4] + gcfg->rand[4]) *
+ ((uint32_t)addr6->s6_addr16[5] + gcfg->rand[5]);
+ h ^= ((uint32_t)addr6->s6_addr16[6] + gcfg->rand[6]) *
+ ((uint32_t)addr6->s6_addr16[7] + gcfg->rand[7]);
+ return h >> (32 - gcfg->hash_bits);
+}
+
+static void add_to_hash_table(struct cache_entry *c, uint32_t hash4,
+ uint32_t hash6)
+{
+ list_add(&c->hash4, &gcfg->hash_table4[hash4]);
+ list_add(&c->hash6, &gcfg->hash_table6[hash6]);
+}
+
+void create_cache(void)
+{
+ int i, hash_size = 1 << gcfg->hash_bits;
+ struct list_head *entry;
+ struct cache_entry *c;
+
+ if (gcfg->hash_table4) {
+ free(gcfg->hash_table4);
+ free(gcfg->hash_table6);
+ }
+
+ gcfg->hash_table4 = (struct list_head *)
+ malloc(hash_size * sizeof(struct list_head));
+ gcfg->hash_table6 = (struct list_head *)
+ malloc(hash_size * sizeof(struct list_head));
+ if (!gcfg->hash_table4 || !gcfg->hash_table6) {
+ slog(LOG_CRIT, "unable to allocate %d bytes for hash table\n",
+ hash_size * sizeof(struct list_head));
+ exit(1);
+ }
+ for (i = 0; i < hash_size; ++i) {
+ INIT_LIST_HEAD(&gcfg->hash_table4[i]);
+ INIT_LIST_HEAD(&gcfg->hash_table6[i]);
+ }
+
+ if (list_empty(&gcfg->cache_pool) && list_empty(&gcfg->cache_active)) {
+ c = calloc(gcfg->cache_size, sizeof(struct cache_entry));
+ for (i = 0; i < gcfg->cache_size; ++i) {
+ INIT_LIST_HEAD(&c->list);
+ INIT_LIST_HEAD(&c->hash4);
+ INIT_LIST_HEAD(&c->hash6);
+ list_add_tail(&c->list, &gcfg->cache_pool);
+ ++c;
+ }
+ } else {
+ list_for_each(entry, &gcfg->cache_active) {
+ c = list_entry(entry, struct cache_entry, list);
+ INIT_LIST_HEAD(&c->hash4);
+ INIT_LIST_HEAD(&c->hash6);
+ add_to_hash_table(c, hash_ip4(&c->addr4),
+ hash_ip6(&c->addr6));
+ }
+ }
+}
+
+static struct cache_entry *cache_insert(const struct in_addr *addr4,
+ const struct in6_addr *addr6,
+ uint32_t hash4, uint32_t hash6)
+{
+ struct cache_entry *c;
+
+ if (list_empty(&gcfg->cache_pool))
+ return NULL;
+ c = list_entry(gcfg->cache_pool.next, struct cache_entry, list);
+ c->addr4 = *addr4;
+ c->addr6 = *addr6;
+ c->last_use = now;
+ c->flags = 0;
+ c->ip4_ident = 1;
+ list_add(&c->list, &gcfg->cache_active);
+ add_to_hash_table(c, hash4, hash6);
+ return c;
+}
+
+struct map4 *find_map4(const struct in_addr *addr4)
+{
+ struct list_head *entry;
+ struct map4 *m;
+
+ list_for_each(entry, &gcfg->map4_list) {
+ m = list_entry(entry, struct map4, list);
+ if (m->addr.s_addr == (m->mask.s_addr & addr4->s_addr))
+ return m;
+ }
+ return NULL;
+}
+
+struct map6 *find_map6(const struct in6_addr *addr6)
+{
+ struct list_head *entry;
+ struct map6 *m;
+
+ list_for_each(entry, &gcfg->map6_list) {
+ m = list_entry(entry, struct map6, list);
+ if (IN6_IS_IN_NET(addr6, &m->addr, &m->mask))
+ return m;
+ }
+ return NULL;
+}
+
+int insert_map4(struct map4 *m, struct map4 **conflict)
+{
+ struct list_head *entry;
+ struct map4 *s;
+
+ list_for_each(entry, &gcfg->map4_list) {
+ s = list_entry(entry, struct map4, list);
+ if (s->prefix_len < m->prefix_len)
+ break;
+ if (s->prefix_len == m->prefix_len &&
+ s->addr.s_addr == m->addr.s_addr)
+ goto conflict;
+ }
+ list_add_tail(&m->list, entry);
+ return 0;
+
+conflict:
+ if (conflict)
+ *conflict = s;
+ return -1;
+}
+
+int insert_map6(struct map6 *m, struct map6 **conflict)
+{
+ struct list_head *entry, *insert_pos = NULL;
+ struct map6 *s;
+
+ list_for_each(entry, &gcfg->map6_list) {
+ s = list_entry(entry, struct map6, list);
+ if (s->prefix_len < m->prefix_len) {
+ if (IN6_IS_IN_NET(&m->addr, &s->addr, &s->mask))
+ goto conflict;
+ if (!insert_pos)
+ insert_pos = entry;
+ } else {
+ if (IN6_IS_IN_NET(&s->addr, &m->addr, &m->mask))
+ goto conflict;
+ }
+ }
+ list_add_tail(&m->list, insert_pos ? insert_pos : &gcfg->map6_list);
+ return 0;
+
+conflict:
+ if (conflict)
+ *conflict = s;
+ return -1;
+}
+
+int append_to_prefix(struct in6_addr *addr6, const struct in_addr *addr4,
+ const struct in6_addr *prefix, int prefix_len)
+{
+ switch (prefix_len) {
+ case 32:
+ addr6->s6_addr32[0] = prefix->s6_addr32[0];
+ addr6->s6_addr32[1] = addr4->s_addr;
+ addr6->s6_addr32[2] = 0;
+ addr6->s6_addr32[3] = 0;
+ return 0;
+ case 40:
+ addr6->s6_addr32[0] = prefix->s6_addr32[0];
+#if __BYTE_ORDER == __BIG_ENDIAN
+ addr6->s6_addr32[1] = prefix->s6_addr32[1] |
+ (addr4->s_addr >> 8);
+ addr6->s6_addr32[2] = (addr4->s_addr << 16) & 0x00ff0000;
+#else
+# if __BYTE_ORDER == __LITTLE_ENDIAN
+ addr6->s6_addr32[1] = prefix->s6_addr32[1] |
+ (addr4->s_addr << 8);
+ addr6->s6_addr32[2] = (addr4->s_addr >> 16) & 0x0000ff00;
+# endif
+#endif
+ addr6->s6_addr32[3] = 0;
+ return 0;
+ case 48:
+ addr6->s6_addr32[0] = prefix->s6_addr32[0];
+#if __BYTE_ORDER == __BIG_ENDIAN
+ addr6->s6_addr32[1] = prefix->s6_addr32[1] |
+ (addr4->s_addr >> 16);
+ addr6->s6_addr32[2] = (addr4->s_addr << 8) & 0x00ffff00;
+#else
+# if __BYTE_ORDER == __LITTLE_ENDIAN
+ addr6->s6_addr32[1] = prefix->s6_addr32[1] |
+ (addr4->s_addr << 16);
+ addr6->s6_addr32[2] = (addr4->s_addr >> 8) & 0x00ffff00;
+# endif
+#endif
+ addr6->s6_addr32[3] = 0;
+ return 0;
+ case 56:
+ addr6->s6_addr32[0] = prefix->s6_addr32[0];
+#if __BYTE_ORDER == __BIG_ENDIAN
+ addr6->s6_addr32[1] = prefix->s6_addr32[1] |
+ (addr4->s_addr >> 24);
+ addr6->s6_addr32[2] = addr4->s_addr & 0x00ffffff;
+#else
+# if __BYTE_ORDER == __LITTLE_ENDIAN
+ addr6->s6_addr32[1] = prefix->s6_addr32[1] |
+ (addr4->s_addr << 24);
+ addr6->s6_addr32[2] = addr4->s_addr & 0xffffff00;
+# endif
+#endif
+ addr6->s6_addr32[3] = 0;
+ return 0;
+ case 64:
+ addr6->s6_addr32[0] = prefix->s6_addr32[0];
+ addr6->s6_addr32[1] = prefix->s6_addr32[1];
+#if __BYTE_ORDER == __BIG_ENDIAN
+ addr6->s6_addr32[2] = addr4->s_addr >> 8;
+ addr6->s6_addr32[3] = addr4->s_addr << 24;
+#else
+# if __BYTE_ORDER == __LITTLE_ENDIAN
+ addr6->s6_addr32[2] = addr4->s_addr << 8;
+ addr6->s6_addr32[3] = addr4->s_addr >> 24;
+# endif
+#endif
+ return 0;
+ case 96:
+ if (prefix->s6_addr32[0] == WKPF &&
+ is_private_ip4_addr(addr4))
+ return -1;
+ addr6->s6_addr32[0] = prefix->s6_addr32[0];
+ addr6->s6_addr32[1] = prefix->s6_addr32[1];
+ addr6->s6_addr32[2] = prefix->s6_addr32[2];
+ addr6->s6_addr32[3] = addr4->s_addr;
+ return 0;
+ default:
+ return -1;
+ }
+}
+
+int map_ip4_to_ip6(struct in6_addr *addr6, const struct in_addr *addr4,
+ struct cache_entry **c_ptr)
+{
+ uint32_t hash;
+ struct list_head *entry;
+ struct cache_entry *c;
+ struct map4 *map4;
+ struct map_static *s;
+ struct map_dynamic *d = NULL;
+
+ if (gcfg->cache_size) {
+ hash = hash_ip4(addr4);
+
+ list_for_each(entry, &gcfg->hash_table4[hash]) {
+ c = list_entry(entry, struct cache_entry, hash4);
+ if (addr4->s_addr == c->addr4.s_addr) {
+ *addr6 = c->addr6;
+ c->last_use = now;
+ if (c_ptr)
+ *c_ptr = c;
+ return 0;
+ }
+ }
+ }
+
+ map4 = find_map4(addr4);
+
+ if (!map4)
+ return -1;
+
+ switch (map4->type) {
+ case MAP_TYPE_STATIC:
+ s = container_of(map4, struct map_static, map4);
+ *addr6 = s->map6.addr;
+ break;
+ case MAP_TYPE_RFC6052:
+ s = container_of(map4, struct map_static, map4);
+ if (append_to_prefix(addr6, addr4, &s->map6.addr,
+ s->map6.prefix_len) < 0)
+ return -1;
+ break;
+ case MAP_TYPE_DYNAMIC_POOL:
+ return -1;
+ case MAP_TYPE_DYNAMIC_HOST:
+ d = container_of(map4, struct map_dynamic, map4);
+ *addr6 = d->map6.addr;
+ d->last_use = now;
+ break;
+ default:
+ return -1;
+ }
+
+ if (gcfg->cache_size) {
+ c = cache_insert(addr4, addr6, hash, hash_ip6(addr6));
+
+ if (c_ptr)
+ *c_ptr = c;
+ if (d) {
+ d->cache_entry = c;
+ if (c)
+ c->flags |= CACHE_F_REP_AGEOUT;
+ }
+ }
+
+ return 0;
+}
+
+static int extract_from_prefix(struct in_addr *addr4,
+ const struct in6_addr *addr6, int prefix_len)
+{
+ switch (prefix_len) {
+ case 32:
+ if (addr6->s6_addr32[2] || addr6->s6_addr32[3])
+ return -1;
+ addr4->s_addr = addr6->s6_addr32[1];
+ break;
+ case 40:
+ if (addr6->s6_addr32[2] & htonl(0xff00ffff) ||
+ addr6->s6_addr32[3])
+ return -1;
+#if __BYTE_ORDER == __BIG_ENDIAN
+ addr4->s_addr = (addr6->s6_addr32[1] << 8) | addr6->s6_addr[9];
+#else
+# if __BYTE_ORDER == __LITTLE_ENDIAN
+ addr4->s_addr = (addr6->s6_addr32[1] >> 8) |
+ (addr6->s6_addr32[2] << 16);
+# endif
+#endif
+ break;
+ case 48:
+ if (addr6->s6_addr32[2] & htonl(0xff0000ff) ||
+ addr6->s6_addr32[3])
+ return -1;
+#if __BYTE_ORDER == __BIG_ENDIAN
+ addr4->s_addr = (addr6->s6_addr16[3] << 16) |
+ (addr6->s6_addr32[2] >> 8);
+#else
+# if __BYTE_ORDER == __LITTLE_ENDIAN
+ addr4->s_addr = addr6->s6_addr16[3] |
+ (addr6->s6_addr32[2] << 8);
+# endif
+#endif
+ break;
+ case 56:
+ if (addr6->s6_addr[8] || addr6->s6_addr32[3])
+ return -1;
+#if __BYTE_ORDER == __BIG_ENDIAN
+ addr4->s_addr = (addr6->s6_addr[7] << 24) |
+ addr6->s6_addr32[2];
+#else
+# if __BYTE_ORDER == __LITTLE_ENDIAN
+ addr4->s_addr = addr6->s6_addr[7] |
+ addr6->s6_addr32[2];
+# endif
+#endif
+ break;
+ case 64:
+ if (addr6->s6_addr[8] ||
+ addr6->s6_addr32[3] & htonl(0x00ffffff))
+ return -1;
+#if __BYTE_ORDER == __BIG_ENDIAN
+ addr4->s_addr = (addr6->s6_addr32[2] << 8) |
+ addr6->s6_addr[12];
+#else
+# if __BYTE_ORDER == __LITTLE_ENDIAN
+ addr4->s_addr = (addr6->s6_addr32[2] >> 8) |
+ (addr6->s6_addr32[3] << 24);
+# endif
+#endif
+ break;
+ case 96:
+ addr4->s_addr = addr6->s6_addr32[3];
+ break;
+ default:
+ return -1;
+ }
+ return validate_ip4_addr(addr4);
+}
+
+int map_ip6_to_ip4(struct in_addr *addr4, const struct in6_addr *addr6,
+ struct cache_entry **c_ptr, int dyn_alloc)
+{
+ uint32_t hash;
+ struct list_head *entry;
+ struct cache_entry *c;
+ struct map6 *map6;
+ struct map_static *s;
+ struct map_dynamic *d = NULL;
+
+ if (gcfg->cache_size) {
+ hash = hash_ip6(addr6);
+
+ list_for_each(entry, &gcfg->hash_table6[hash]) {
+ c = list_entry(entry, struct cache_entry, hash6);
+ if (IN6_ARE_ADDR_EQUAL(addr6, &c->addr6)) {
+ *addr4 = c->addr4;
+ c->last_use = now;
+ if (c_ptr)
+ *c_ptr = c;
+ return 0;
+ }
+ }
+ }
+
+ map6 = find_map6(addr6);
+
+ if (!map6) {
+ if (dyn_alloc)
+ map6 = assign_dynamic(addr6);
+ if (!map6)
+ return -1;
+ }
+
+ switch (map6->type) {
+ case MAP_TYPE_STATIC:
+ s = container_of(map6, struct map_static, map6);
+ *addr4 = s->map4.addr;
+ break;
+ case MAP_TYPE_RFC6052:
+ if (extract_from_prefix(addr4, addr6, map6->prefix_len) < 0)
+ return -1;
+ if (map6->addr.s6_addr32[0] == WKPF &&
+ is_private_ip4_addr(addr4))
+ return -1;
+ s = container_of(map6, struct map_static, map6);
+ if (find_map4(addr4) != &s->map4)
+ return -1;
+ break;
+ case MAP_TYPE_DYNAMIC_HOST:
+ d = container_of(map6, struct map_dynamic, map6);
+ *addr4 = d->map4.addr;
+ d->last_use = now;
+ break;
+ default:
+ return -1;
+ }
+
+ if (gcfg->cache_size) {
+ c = cache_insert(addr4, addr6, hash_ip4(addr4), hash);
+
+ if (c_ptr)
+ *c_ptr = c;
+ if (d) {
+ d->cache_entry = c;
+ if (c)
+ c->flags |= CACHE_F_REP_AGEOUT;
+ }
+ }
+
+ return 0;
+}
+
+static void report_ageout(struct cache_entry *c)
+{
+ struct map4 *m4;
+ struct map_dynamic *d;
+
+ m4 = find_map4(&c->addr4);
+ if (!m4 || m4->type != MAP_TYPE_DYNAMIC_HOST)
+ return;
+ d = container_of(m4, struct map_dynamic, map4);
+ d->last_use = c->last_use;
+ d->cache_entry = NULL;
+}
+
+void addrmap_maint(void)
+{
+ struct list_head *entry, *next;
+ struct cache_entry *c;
+
+ list_for_each_safe(entry, next, &gcfg->cache_active) {
+ c = list_entry(entry, struct cache_entry, list);
+ if (c->last_use + CACHE_MAX_AGE < now) {
+ if (c->flags & CACHE_F_REP_AGEOUT)
+ report_ageout(c);
+ list_add(&c->list, &gcfg->cache_pool);
+ list_del(&c->hash4);
+ list_del(&c->hash6);
+ }
+ }
+}
--- /dev/null
+/*
+ * conffile.c -- config file parser
+ *
+ * part of TAYGA <http://www.litech.org/tayga/>
+ * Copyright (C) 2010 Nathan Lutchansky <lutchann@litech.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <tayga.h>
+
+struct config *gcfg;
+
+static int parse_prefix(int af, const char *src, void *prefix, int *prefix_len)
+{
+ char *p, *end;
+ long int a;
+ int r;
+
+ p = strchr(src, '/');
+ if (!p)
+ return -1;
+ *p = 0;
+ a = strtol(p + 1, &end, 10);
+ r = *end || !inet_pton(af, src, prefix);
+ *p = '/';
+ if (r)
+ return -1;
+ if (a < 0 || a > (af == AF_INET6 ? 128 : 32))
+ return -1;
+
+ *prefix_len = a;
+ return 0;
+}
+
+static struct map_static *alloc_map_static(int ln)
+{
+ struct map_static *m;
+
+ m = (struct map_static *)malloc(sizeof(struct map_static));
+ if (!m) {
+ slog(LOG_CRIT, "Unable to allocate config memory\n");
+ exit(1);
+ }
+ memset(m, 0, sizeof(struct map_static));
+ m->map4.type = MAP_TYPE_STATIC;
+ m->map4.prefix_len = 32;
+ calc_ip4_mask(&m->map4.mask, NULL, 32);
+ INIT_LIST_HEAD(&m->map4.list);
+ m->map6.type = MAP_TYPE_STATIC;
+ m->map6.prefix_len = 128;
+ calc_ip6_mask(&m->map6.mask, NULL, 128);
+ INIT_LIST_HEAD(&m->map6.list);
+ m->conffile_lineno = ln;
+ return m;
+}
+
+static void abort_on_conflict4(char *msg, int ln, struct map4 *old)
+{
+ char oldaddr[INET_ADDRSTRLEN];
+ char oldline[128] = "";
+ struct map_static *s;
+
+ if (old->type == MAP_TYPE_STATIC || old->type == MAP_TYPE_RFC6052) {
+ s = container_of(old, struct map_static, map4);
+ if (s->conffile_lineno)
+ sprintf(oldline, " from line %d", s->conffile_lineno);
+ }
+
+ inet_ntop(AF_INET, &old->addr, oldaddr, sizeof(oldaddr));
+ if (ln)
+ slog(LOG_CRIT, "%s on line %d conflicts with earlier "
+ "definition of %s/%d%s\n", msg, ln,
+ oldaddr, old->prefix_len, oldline);
+ else
+ slog(LOG_CRIT, "%s conflicts with earlier "
+ "definition of %s/%d%s\n", msg,
+ oldaddr, old->prefix_len, oldline);
+ exit(1);
+}
+
+static void abort_on_conflict6(char *msg, int ln, struct map6 *old)
+{
+ char oldaddr[INET6_ADDRSTRLEN];
+ char oldline[128] = "";
+ struct map_static *s;
+
+ if (old->type == MAP_TYPE_STATIC || old->type == MAP_TYPE_RFC6052) {
+ s = container_of(old, struct map_static, map6);
+ if (s->conffile_lineno)
+ sprintf(oldline, " from line %d", s->conffile_lineno);
+ }
+
+ inet_ntop(AF_INET6, &old->addr, oldaddr, sizeof(oldaddr));
+ if (ln)
+ slog(LOG_CRIT, "%s on line %d overlaps with earlier "
+ "definition of %s/%d%s\n", msg, ln,
+ oldaddr, old->prefix_len, oldline);
+ else
+ slog(LOG_CRIT, "%s overlaps with earlier "
+ "definition of %s/%d%s\n", msg,
+ oldaddr, old->prefix_len, oldline);
+ exit(1);
+}
+
+static void config_ipv4_addr(int ln, int arg_count, char **args)
+{
+ if (gcfg->local_addr4.s_addr) {
+ slog(LOG_CRIT, "Error: duplicate ipv4-addr directive on "
+ "line %d\n", ln);
+ exit(1);
+ }
+ if (!inet_pton(AF_INET, args[0], &gcfg->local_addr4)) {
+ slog(LOG_CRIT, "Expected an IPv4 address but found \"%s\" on "
+ "line %d\n", args[0], ln);
+ exit(1);
+ }
+ if (validate_ip4_addr(&gcfg->local_addr4) < 0) {
+ slog(LOG_CRIT, "Cannot use reserved address %s in ipv4-addr "
+ "directive, aborting...\n", args[0]);
+ exit(1);
+ }
+}
+
+static void config_ipv6_addr(int ln, int arg_count, char **args)
+{
+ if (gcfg->local_addr6.s6_addr[0]) {
+ slog(LOG_CRIT, "Error: duplicate ipv6-addr directive on line "
+ "%d\n", ln);
+ exit(1);
+ }
+ if (!inet_pton(AF_INET6, args[0], &gcfg->local_addr6)) {
+ slog(LOG_CRIT, "Expected an IPv6 address but found \"%s\" on "
+ "line %d\n", args[0], ln);
+ exit(1);
+ }
+ if (validate_ip6_addr(&gcfg->local_addr6) < 0) {
+ slog(LOG_CRIT, "Cannot use reserved address %s in ipv6-addr "
+ "directive, aborting...\n", args[0]);
+ exit(1);
+ }
+ if (gcfg->local_addr6.s6_addr32[0] == WKPF) {
+ slog(LOG_CRIT, "Error: ipv6-addr directive cannot contain an "
+ "address in the Well-Known Prefix "
+ "(64:ff9b::/96)\n");
+ exit(1);
+ }
+}
+
+static void config_prefix(int ln, int arg_count, char **args)
+{
+ struct map_static *m;
+ struct map6 *m6;
+
+ m = alloc_map_static(ln);
+ m->map4.prefix_len = 0;
+ m->map4.mask.s_addr = 0;
+ m->map4.type = MAP_TYPE_RFC6052;
+ m->map6.type = MAP_TYPE_RFC6052;
+ m6 = &m->map6;
+
+ if (parse_prefix(AF_INET6, args[0], &m6->addr, &m6->prefix_len) ||
+ calc_ip6_mask(&m6->mask, &m6->addr, m6->prefix_len)) {
+ slog(LOG_CRIT, "Expected an IPv6 prefix but found \"%s\" on "
+ "line %d\n", args[0], ln);
+ exit(1);
+ }
+ if (validate_ip6_addr(&m6->addr) < 0) {
+ slog(LOG_CRIT, "Cannot use reserved address %s in prefix "
+ "directive, aborting...\n", args[0]);
+ exit(1);
+ }
+ if (m6->prefix_len != 32 && m6->prefix_len != 40 &&
+ m6->prefix_len != 48 && m6->prefix_len != 56 &&
+ m6->prefix_len != 64 && m6->prefix_len != 96) {
+ slog(LOG_CRIT, "NAT prefix length must be 32, 40, 48, 56, 64 "
+ "or 96 only, aborting...\n");
+ exit(1);
+ }
+ if (insert_map4(&m->map4, NULL) < 0) {
+ slog(LOG_CRIT, "Error: duplicate prefix directive on line %d\n",
+ ln);
+ exit(1);
+ }
+ if (insert_map6(&m->map6, &m6) < 0)
+ abort_on_conflict6("Error: NAT64 prefix", ln, m6);
+}
+
+static void config_tun_device(int ln, int arg_count, char **args)
+{
+ if (gcfg->tundev[0]) {
+ slog(LOG_CRIT, "Error: duplicate tun-device directive on line "
+ "%d\n", ln);
+ exit(1);
+ }
+ if (strlen(args[0]) + 1 > sizeof(gcfg->tundev)) {
+ slog(LOG_CRIT, "Device name \"%s\" is invalid on line %d\n",
+ args[0], ln);
+ exit(1);
+ }
+ strcpy(gcfg->tundev, args[0]);
+}
+
+static void config_map(int ln, int arg_count, char **args)
+{
+ struct map_static *m;
+ struct map4 *m4;
+ struct map6 *m6;
+
+ m = alloc_map_static(ln);
+
+ if (!inet_pton(AF_INET, args[0], &m->map4.addr)) {
+ slog(LOG_CRIT, "Expected an IPv4 address but found \"%s\" on "
+ "line %d\n", args[0], ln);
+ exit(1);
+ }
+ if (!inet_pton(AF_INET6, args[1], &m->map6.addr)) {
+ slog(LOG_CRIT, "Expected an IPv6 address but found \"%s\" on "
+ "line %d\n", args[1], ln);
+ exit(1);
+ }
+ if (validate_ip4_addr(&m->map4.addr) < 0) {
+ slog(LOG_CRIT, "Cannot use reserved address %s in map "
+ "directive, aborting...\n", args[0]);
+ exit(1);
+ }
+ if (validate_ip6_addr(&m->map6.addr) < 0) {
+ slog(LOG_CRIT, "Cannot use reserved address %s in map "
+ "directive, aborting...\n", args[1]);
+ exit(1);
+ }
+ if (m->map6.addr.s6_addr32[0] == WKPF) {
+ slog(LOG_CRIT, "Cannot create single-host maps inside "
+ "64:ff9b::/96, aborting...\n");
+ exit(1);
+ }
+ if (insert_map4(&m->map4, &m4) < 0)
+ abort_on_conflict4("Error: IPv4 address in map directive",
+ ln, m4);
+ if (insert_map6(&m->map6, &m6) < 0)
+ abort_on_conflict6("Error: IPv6 address in map directive",
+ ln, m6);
+}
+
+static void config_dynamic_pool(int ln, int arg_count, char **args)
+{
+ struct dynamic_pool *pool;
+ struct map4 *m4;
+
+ if (gcfg->dynamic_pool) {
+ slog(LOG_CRIT, "Error: duplicate dynamic-pool directive on "
+ "line %d\n", ln);
+ exit(1);
+ }
+
+ pool = (struct dynamic_pool *)malloc(sizeof(struct dynamic_pool));
+ if (!pool) {
+ slog(LOG_CRIT, "Unable to allocate config memory\n");
+ exit(1);
+ }
+ memset(pool, 0, sizeof(struct dynamic_pool));
+ INIT_LIST_HEAD(&pool->mapped_list);
+ INIT_LIST_HEAD(&pool->dormant_list);
+ INIT_LIST_HEAD(&pool->free_list);
+
+ m4 = &pool->map4;
+ m4->type = MAP_TYPE_DYNAMIC_POOL;
+ INIT_LIST_HEAD(&m4->list);
+
+ if (parse_prefix(AF_INET, args[0], &m4->addr, &m4->prefix_len) ||
+ calc_ip4_mask(&m4->mask, &m4->addr, m4->prefix_len)) {
+ slog(LOG_CRIT, "Expected an IPv4 prefix but found \"%s\" on "
+ "line %d\n", args[0], ln);
+ exit(1);
+ }
+ if (validate_ip4_addr(&m4->addr) < 0) {
+ slog(LOG_CRIT, "Cannot use reserved address %s in dynamic-pool "
+ "directive, aborting...\n", args[0]);
+ exit(1);
+ }
+ if (m4->prefix_len > 31) {
+ slog(LOG_CRIT, "Cannot use a prefix longer than /31 in "
+ "dynamic-pool directive, aborting...\n");
+ exit(1);
+ }
+ if (insert_map4(&pool->map4, &m4) < 0)
+ abort_on_conflict4("Error: IPv4 prefix in dynamic-pool "
+ "directive", ln, m4);
+
+ pool->free_head.addr = ntohl(m4->addr.s_addr);
+ pool->free_head.count = (1 << (32 - m4->prefix_len)) - 1;
+ INIT_LIST_HEAD(&pool->free_head.list);
+ list_add(&pool->free_head.list, &pool->free_list);
+
+ gcfg->dynamic_pool = pool;
+}
+
+static void config_data_dir(int ln, int arg_count, char **args)
+{
+ if (gcfg->data_dir[0]) {
+ slog(LOG_CRIT, "Error: duplicate data-dir directive on line "
+ "%d\n", ln);
+ exit(1);
+ }
+ if (args[0][0] != '/') {
+ slog(LOG_CRIT, "Error: data-dir must be an absolute path\n");
+ exit(1);
+ }
+ strcpy(gcfg->data_dir, args[0]);
+}
+
+static void config_strict_fh(int ln, int arg_count, char **args)
+{
+ if (!strcasecmp(args[0], "true") || !strcasecmp(args[0], "on") ||
+ !strcasecmp(args[0], "1")) {
+ gcfg->lazy_frag_hdr = 0;
+ } else if (!strcasecmp(args[0], "false") ||
+ !strcasecmp(args[0], "off") ||
+ !strcasecmp(args[0], "0")) {
+ gcfg->lazy_frag_hdr = 1;
+ } else {
+ slog(LOG_CRIT, "Error: invalid value for strict-frag-hdr\n");
+ exit(1);
+ }
+}
+
+struct {
+ char *name;
+ void (*config_func)(int ln, int arg_count, char **args);
+ int need_args;
+} config_directives[] = {
+ { "ipv4-addr", config_ipv4_addr, 1 },
+ { "ipv6-addr", config_ipv6_addr, 1 },
+ { "prefix", config_prefix, 1 },
+ { "tun-device", config_tun_device, 1 },
+ { "map", config_map, 2 },
+ { "dynamic-pool", config_dynamic_pool, 1 },
+ { "data-dir", config_data_dir, 1 },
+ { "strict-frag-hdr", config_strict_fh, 1 },
+ { NULL, NULL, 0 }
+};
+
+void read_config(char *conffile)
+{
+ FILE *in;
+ int ln = 0;
+ char line[512];
+ char addrbuf[128];
+ char *c, *tokptr;
+#define MAX_ARGS 10
+ char *args[MAX_ARGS];
+ int arg_count;
+ int i;
+ struct map_static *m;
+ struct map4 *m4;
+ struct map6 *m6;
+
+ gcfg = (struct config *)malloc(sizeof(struct config));
+ if (!gcfg)
+ goto malloc_fail;
+ memset(gcfg, 0, sizeof(struct config));
+ gcfg->recv_buf_size = 65536 + sizeof(struct tun_pi);
+ INIT_LIST_HEAD(&gcfg->map4_list);
+ INIT_LIST_HEAD(&gcfg->map6_list);
+ gcfg->dyn_min_lease = 7200 + 4 * 60; /* just over two hours */
+ gcfg->dyn_max_lease = 14 * 86400;
+ gcfg->max_commit_delay = gcfg->dyn_max_lease / 4;
+ gcfg->hash_bits = 7;
+ gcfg->cache_size = 8192;
+ gcfg->allow_ident_gen = 1;
+ gcfg->ipv6_offlink_mtu = 1280;
+ gcfg->lazy_frag_hdr = 1;
+ INIT_LIST_HEAD(&gcfg->cache_pool);
+ INIT_LIST_HEAD(&gcfg->cache_active);
+
+ in = fopen(conffile, "r");
+ if (!in) {
+ slog(LOG_CRIT, "unable to open %s, aborting: %s\n", conffile,
+ strerror(errno));
+ exit(1);
+ }
+ while (fgets(line, sizeof(line), in)) {
+ ++ln;
+ if (strlen(line) + 1 == sizeof(line)) {
+ slog(LOG_CRIT, "Line %d of %s is too long, "
+ "aborting...\n", ln, conffile);
+ exit(1);
+ }
+ arg_count = 0;
+ for (;;) {
+ c = strtok_r(arg_count ? NULL : line, DELIM, &tokptr);
+ if (!c || *c == '#')
+ break;
+ if (arg_count == MAX_ARGS) {
+ slog(LOG_CRIT, "Line %d of %s is too long, "
+ "aborting...\n", ln, conffile);
+ exit(1);
+ }
+ args[arg_count++] = c;
+ }
+ if (arg_count == 0)
+ continue;
+ for (i = 0; config_directives[i].name; ++i)
+ if (!strcasecmp(args[0], config_directives[i].name))
+ break;
+ if (!config_directives[i].name) {
+ slog(LOG_CRIT, "Unknown directive \"%s\" on line %d of "
+ "%s, aborting...\n", args[0],
+ ln, conffile);
+ exit(1);
+ }
+ --arg_count;
+ if (config_directives[i].need_args >= 0 &&
+ arg_count != config_directives[i].need_args) {
+ slog(LOG_CRIT, "Incorrect number of arguments on "
+ "line %d\n", ln);
+ exit(1);
+ }
+ config_directives[i].config_func(ln, arg_count, &args[1]);
+ }
+ fclose(in);
+
+ if (list_empty(&gcfg->map6_list)) {
+ slog(LOG_CRIT, "Error: no translation maps or NAT64 prefix "
+ "configured\n");
+ exit(1);
+ }
+
+ m4 = list_entry(gcfg->map4_list.next, struct map4, list);
+ m6 = list_entry(gcfg->map6_list.next, struct map6, list);
+
+ if (m4->type == MAP_TYPE_RFC6052 && m6->type == MAP_TYPE_RFC6052 &&
+ !gcfg->allow_ident_gen)
+ gcfg->cache_size = 0;
+
+ if (!gcfg->local_addr4.s_addr) {
+ slog(LOG_CRIT, "Error: no ipv4-addr directive found\n");
+ exit(1);
+ }
+
+ m = alloc_map_static(0);
+ m->map4.addr = gcfg->local_addr4;
+ if (insert_map4(&m->map4, &m4) < 0)
+ abort_on_conflict4("Error: ipv4-addr", 0, m4);
+
+ if (gcfg->local_addr6.s6_addr32[0]) {
+ m->map6.addr = gcfg->local_addr6;
+ if (insert_map6(&m->map6, &m6) < 0) {
+ if (m6->type == MAP_TYPE_RFC6052) {
+ inet_ntop(AF_INET6, &m6->addr,
+ addrbuf, sizeof(addrbuf));
+ slog(LOG_CRIT, "Error: ipv6-addr cannot reside "
+ "within configured prefix "
+ "%s/%d\n", addrbuf,
+ m6->prefix_len);
+ exit(1);
+ } else {
+ abort_on_conflict6("Error: ipv6-addr", 0, m6);
+ }
+ }
+ } else {
+ m6 = list_entry(gcfg->map6_list.prev, struct map6, list);
+ if (m6->type != MAP_TYPE_RFC6052) {
+ slog(LOG_CRIT, "Error: ipv6-addr directive must be "
+ "specified if no NAT64 prefix is "
+ "configured\n");
+ exit(1);
+ }
+ if (append_to_prefix(&gcfg->local_addr6, &gcfg->local_addr4,
+ &m6->addr, m6->prefix_len)) {
+ slog(LOG_CRIT, "Error: ipv6-addr directive must be "
+ "specified if prefix is 64:ff9b::/96 "
+ "and ipv4-addr is a non-global "
+ "(RFC 1918) address\n");
+ exit(1);
+ }
+ m->map6.addr = gcfg->local_addr6;
+ }
+ return;
+
+malloc_fail:
+ slog(LOG_CRIT, "Unable to allocate config memory\n");
+ exit(1);
+}
--- /dev/null
+/* config.h.in. Generated from configure.ac by autoheader. */
+
+/* Name of package */
+#undef PACKAGE
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* Version number of package */
+#undef VERSION
--- /dev/null
+#! /bin/sh
+# Guess values for system-dependent variables and create Makefiles.
+# Generated by GNU Autoconf 2.65 for tayga 0.9.2.
+#
+#
+# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
+# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation,
+# Inc.
+#
+#
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+ emulate sh
+ NULLCMD=:
+ # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+ # is contrary to our usage. Disable this feature.
+ alias -g '${1+"$@"}'='"$@"'
+ setopt NO_GLOB_SUBST
+else
+ case `(set -o) 2>/dev/null` in #(
+ *posix*) :
+ set -o posix ;; #(
+ *) :
+ ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+ && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+ as_echo='print -r --'
+ as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+ as_echo='printf %s\n'
+ as_echo_n='printf %s'
+else
+ if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+ as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+ as_echo_n='/usr/ucb/echo -n'
+ else
+ as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+ as_echo_n_body='eval
+ arg=$1;
+ case $arg in #(
+ *"$as_nl"*)
+ expr "X$arg" : "X\\(.*\\)$as_nl";
+ arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+ esac;
+ expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+ '
+ export as_echo_n_body
+ as_echo_n='sh -c $as_echo_n_body as_echo'
+ fi
+ export as_echo_body
+ as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+ PATH_SEPARATOR=:
+ (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+ (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+ PATH_SEPARATOR=';'
+ }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order. Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" "" $as_nl"
+
+# Find who we are. Look in the path if we contain no directory separator.
+case $0 in #((
+ *[\\/]* ) as_myself=$0 ;;
+ *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+ done
+IFS=$as_save_IFS
+
+ ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+ as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+ $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+ exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh). But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there. '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+ && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+if test "x$CONFIG_SHELL" = x; then
+ as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then :
+ emulate sh
+ NULLCMD=:
+ # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which
+ # is contrary to our usage. Disable this feature.
+ alias -g '\${1+\"\$@\"}'='\"\$@\"'
+ setopt NO_GLOB_SUBST
+else
+ case \`(set -o) 2>/dev/null\` in #(
+ *posix*) :
+ set -o posix ;; #(
+ *) :
+ ;;
+esac
+fi
+"
+ as_required="as_fn_return () { (exit \$1); }
+as_fn_success () { as_fn_return 0; }
+as_fn_failure () { as_fn_return 1; }
+as_fn_ret_success () { return 0; }
+as_fn_ret_failure () { return 1; }
+
+exitcode=0
+as_fn_success || { exitcode=1; echo as_fn_success failed.; }
+as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; }
+as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; }
+as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; }
+if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then :
+
+else
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+fi
+test x\$exitcode = x0 || exit 1"
+ as_suggested=" as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
+ as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO
+ eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&
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+ if (eval "$as_required") 2>/dev/null; then :
+ as_have_required=yes
+else
+ as_have_required=no
+fi
+ if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null; then :
+
+else
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+as_found=false
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ as_found=:
+ case $as_dir in #(
+ /*)
+ for as_base in sh bash ksh sh5; do
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+ as_shell=$as_dir/$as_base
+ if { test -f "$as_shell" || test -f "$as_shell.exe"; } &&
+ { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$as_shell"; } 2>/dev/null; then :
+ CONFIG_SHELL=$as_shell as_have_required=yes
+ if { $as_echo "$as_bourne_compatible""$as_suggested" | as_run=a "$as_shell"; } 2>/dev/null; then :
+ break 2
+fi
+fi
+ done;;
+ esac
+ as_found=false
+done
+$as_found || { if { test -f "$SHELL" || test -f "$SHELL.exe"; } &&
+ { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$SHELL"; } 2>/dev/null; then :
+ CONFIG_SHELL=$SHELL as_have_required=yes
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+IFS=$as_save_IFS
+
+
+ if test "x$CONFIG_SHELL" != x; then :
+ # We cannot yet assume a decent shell, so we have to provide a
+ # neutralization value for shells without unset; and this also
+ # works around shells that cannot unset nonexistent variables.
+ BASH_ENV=/dev/null
+ ENV=/dev/null
+ (unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+ export CONFIG_SHELL
+ exec "$CONFIG_SHELL" "$as_myself" ${1+"$@"}
+fi
+
+ if test x$as_have_required = xno; then :
+ $as_echo "$0: This script requires a shell more modern than all"
+ $as_echo "$0: the shells that I found on your system."
+ if test x${ZSH_VERSION+set} = xset ; then
+ $as_echo "$0: In particular, zsh $ZSH_VERSION has bugs and should"
+ $as_echo "$0: be upgraded to zsh 4.3.4 or later."
+ else
+ $as_echo "$0: Please tell bug-autoconf@gnu.org about your system,
+$0: including any error possibly output before this
+$0: message. Then install a modern shell, or manually run
+$0: the script under such a shell if you do have one."
+ fi
+ exit 1
+fi
+fi
+fi
+SHELL=${CONFIG_SHELL-/bin/sh}
+export SHELL
+# Unset more variables known to interfere with behavior of common tools.
+CLICOLOR_FORCE= GREP_OPTIONS=
+unset CLICOLOR_FORCE GREP_OPTIONS
+
+## --------------------- ##
+## M4sh Shell Functions. ##
+## --------------------- ##
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+ { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+ return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+ set +e
+ as_fn_set_status $1
+ exit $1
+} # as_fn_exit
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+ case $as_dir in #(
+ -*) as_dir=./$as_dir;;
+ esac
+ test -d "$as_dir" || eval $as_mkdir_p || {
+ as_dirs=
+ while :; do
+ case $as_dir in #(
+ *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+ *) as_qdir=$as_dir;;
+ esac
+ as_dirs="'$as_qdir' $as_dirs"
+ as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
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+ X"$as_dir" : 'X\(//\)$' \| \
+ X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
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+ /^X\(\/\/\)[^/].*/{
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+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
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+ /^X\(\/\).*/{
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+ q
+ }
+ s/.*/./; q'`
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+ done
+ test -z "$as_dirs" || eval "mkdir $as_dirs"
+ } || test -d "$as_dir" || as_fn_error "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+ eval 'as_fn_append ()
+ {
+ eval $1+=\$2
+ }'
+else
+ as_fn_append ()
+ {
+ eval $1=\$$1\$2
+ }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+ eval 'as_fn_arith ()
+ {
+ as_val=$(( $* ))
+ }'
+else
+ as_fn_arith ()
+ {
+ as_val=`expr "$@" || test $? -eq 1`
+ }
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+
+
+# as_fn_error ERROR [LINENO LOG_FD]
+# ---------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
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+as_fn_error ()
+{
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+ fi
+ $as_echo "$as_me: error: $1" >&2
+ as_fn_exit $as_status
+} # as_fn_error
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
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+
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+
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+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
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+$as_echo X/"$0" |
+ sed '/^.*\/\([^/][^/]*\)\/*$/{
+ s//\1/
+ q
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+ s//\1/
+ q
+ }
+ /^X\/\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
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+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+
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+ as_lineno_2=$LINENO as_lineno_2a=$LINENO
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+ # Blame Lee E. McMahon (1931-1989) for sed's syntax. :-)
+ sed -n '
+ p
+ /[$]LINENO/=
+ ' <$as_myself |
+ sed '
+ s/[$]LINENO.*/&-/
+ t lineno
+ b
+ :lineno
+ N
+ :loop
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+ t loop
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+ { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
+
+ # Don't try to exec as it changes $[0], causing all sort of problems
+ # (the dirname of $[0] is not the place where we might find the
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+ . "./$as_me.lineno"
+ # Exit status is that of the last command.
+ exit
+}
+
+ECHO_C= ECHO_N= ECHO_T=
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+-n*)
+ case `echo 'xy\c'` in
+ *c*) ECHO_T=' ';; # ECHO_T is single tab character.
+ xy) ECHO_C='\c';;
+ *) echo `echo ksh88 bug on AIX 6.1` > /dev/null
+ ECHO_T=' ';;
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+*)
+ ECHO_N='-n';;
+esac
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+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+ rm -f conf$$.dir/conf$$.file
+else
+ rm -f conf$$.dir
+ mkdir conf$$.dir 2>/dev/null
+fi
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+ if ln -s conf$$.file conf$$ 2>/dev/null; then
+ as_ln_s='ln -s'
+ # ... but there are two gotchas:
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+ else
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+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+if mkdir -p . 2>/dev/null; then
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+ test -d ./-p && rmdir ./-p
+ as_mkdir_p=false
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+
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+
+
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+
+# Name of the host.
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+ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 1q`
+
+#
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+LIBOBJS=
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+PACKAGE
+CYGPATH_W
+am__isrc
+INSTALL_DATA
+INSTALL_SCRIPT
+INSTALL_PROGRAM
+target_alias
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+build_alias
+LIBS
+ECHO_T
+ECHO_N
+ECHO_C
+DEFS
+mandir
+localedir
+libdir
+psdir
+pdfdir
+dvidir
+htmldir
+infodir
+docdir
+oldincludedir
+includedir
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+
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+ac_unrecognized_opts=
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+# The variables have the same names as the options, with
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+program_prefix=NONE
+program_suffix=NONE
+program_transform_name=s,x,x,
+silent=
+site=
+srcdir=
+verbose=
+x_includes=NONE
+x_libraries=NONE
+
+# Installation directory options.
+# These are left unexpanded so users can "make install exec_prefix=/foo"
+# and all the variables that are supposed to be based on exec_prefix
+# by default will actually change.
+# Use braces instead of parens because sh, perl, etc. also accept them.
+# (The list follows the same order as the GNU Coding Standards.)
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+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datarootdir='${prefix}/share'
+datadir='${datarootdir}'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
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+oldincludedir='/usr/include'
+docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
+infodir='${datarootdir}/info'
+htmldir='${docdir}'
+dvidir='${docdir}'
+pdfdir='${docdir}'
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+localedir='${datarootdir}/locale'
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+
+ac_prev=
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+ bindir=$ac_optarg ;;
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+ -build | --build | --buil | --bui | --bu)
+ ac_prev=build_alias ;;
+ -build=* | --build=* | --buil=* | --bui=* | --bu=*)
+ build_alias=$ac_optarg ;;
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+ -cache-file | --cache-file | --cache-fil | --cache-fi \
+ | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+ ac_prev=cache_file ;;
+ -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
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+ cache_file=$ac_optarg ;;
+
+ --config-cache | -C)
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+
+ -datadir | --datadir | --datadi | --datad)
+ ac_prev=datadir ;;
+ -datadir=* | --datadir=* | --datadi=* | --datad=*)
+ datadir=$ac_optarg ;;
+
+ -datarootdir | --datarootdir | --datarootdi | --datarootd | --dataroot \
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+ datarootdir=$ac_optarg ;;
+
+ -disable-* | --disable-*)
+ ac_useropt=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
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+ ac_useropt_orig=$ac_useropt
+ ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
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+"*) ;;
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+ eval enable_$ac_useropt=no ;;
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+ -docdir | --docdir | --docdi | --doc | --do)
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+ -docdir=* | --docdir=* | --docdi=* | --doc=* | --do=*)
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+ -dvidir | --dvidir | --dvidi | --dvid | --dvi | --dv)
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+ -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
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+ ac_prev=exec_prefix ;;
+ -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
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+ exec_prefix=$ac_optarg ;;
+
+ -gas | --gas | --ga | --g)
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+ -host | --host | --hos | --ho)
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+ -host=* | --host=* | --hos=* | --ho=*)
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+
+ -htmldir | --htmldir | --htmldi | --htmld | --html | --htm | --ht)
+ ac_prev=htmldir ;;
+ -htmldir=* | --htmldir=* | --htmldi=* | --htmld=* | --html=* | --htm=* \
+ | --ht=*)
+ htmldir=$ac_optarg ;;
+
+ -includedir | --includedir | --includedi | --included | --include \
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+ # This message is too long to be a string in the A/UX 3.1 sh.
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+\`configure' configures tayga 0.9.2 to adapt to many kinds of systems.
+
+Usage: $0 [OPTION]... [VAR=VALUE]...
+
+To assign environment variables (e.g., CC, CFLAGS...), specify them as
+VAR=VALUE. See below for descriptions of some of the useful variables.
+
+Defaults for the options are specified in brackets.
+
+Configuration:
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+ --help=short display options specific to this package
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+ -V, --version display version information and exit
+ -q, --quiet, --silent do not print \`checking...' messages
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+for instance \`--prefix=\$HOME'.
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+For better control, use the options below.
+
+Fine tuning of the installation directories:
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+ --sbindir=DIR system admin executables [EPREFIX/sbin]
+ --libexecdir=DIR program executables [EPREFIX/libexec]
+ --sysconfdir=DIR read-only single-machine data [PREFIX/etc]
+ --sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com]
+ --localstatedir=DIR modifiable single-machine data [PREFIX/var]
+ --libdir=DIR object code libraries [EPREFIX/lib]
+ --includedir=DIR C header files [PREFIX/include]
+ --oldincludedir=DIR C header files for non-gcc [/usr/include]
+ --datarootdir=DIR read-only arch.-independent data root [PREFIX/share]
+ --datadir=DIR read-only architecture-independent data [DATAROOTDIR]
+ --infodir=DIR info documentation [DATAROOTDIR/info]
+ --localedir=DIR locale-dependent data [DATAROOTDIR/locale]
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+ --docdir=DIR documentation root [DATAROOTDIR/doc/tayga]
+ --htmldir=DIR html documentation [DOCDIR]
+ --dvidir=DIR dvi documentation [DOCDIR]
+ --pdfdir=DIR pdf documentation [DOCDIR]
+ --psdir=DIR ps documentation [DOCDIR]
+_ACEOF
+
+ cat <<\_ACEOF
+
+Program names:
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+ --program-suffix=SUFFIX append SUFFIX to installed program names
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+if test -n "$ac_init_help"; then
+ case $ac_init_help in
+ short | recursive ) echo "Configuration of tayga 0.9.2:";;
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+ cat <<\_ACEOF
+
+Optional Features:
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+ --disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no)
+ --enable-FEATURE[=ARG] include FEATURE [ARG=yes]
+ --disable-dependency-tracking speeds up one-time build
+ --enable-dependency-tracking do not reject slow dependency extractors
+
+Some influential environment variables:
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+ CFLAGS C compiler flags
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+ LIBS libraries to pass to the linker, e.g. -l<library>
+ CPPFLAGS (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
+ you have headers in a nonstandard directory <include dir>
+
+Use these variables to override the choices made by `configure' or to help
+it to find libraries and programs with nonstandard names/locations.
+
+Report bugs to the package provider.
+_ACEOF
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+if test "$ac_init_help" = "recursive"; then
+ # If there are subdirs, report their specific --help.
+ for ac_dir in : $ac_subdirs_all; do test "x$ac_dir" = x: && continue
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+case "$ac_dir" in
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+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
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+ cd "$ac_dir" || { ac_status=$?; continue; }
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+test -n "$ac_init_help" && exit $ac_status
+if $ac_init_version; then
+ cat <<\_ACEOF
+tayga configure 0.9.2
+generated by GNU Autoconf 2.65
+
+Copyright (C) 2009 Free Software Foundation, Inc.
+This configure script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it.
+_ACEOF
+ exit
+fi
+
+## ------------------------ ##
+## Autoconf initialization. ##
+## ------------------------ ##
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+# ac_fn_c_try_compile LINENO
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+ (eval "$ac_compile") 2>conftest.err
+ ac_status=$?
+ if test -s conftest.err; then
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+ cat conftest.er1 >&5
+ mv -f conftest.er1 conftest.err
+ fi
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } && {
+ test -z "$ac_c_werror_flag" ||
+ test ! -s conftest.err
+ } && test -s conftest.$ac_objext; then :
+ ac_retval=0
+else
+ $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ ac_retval=1
+fi
+ eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+ as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_compile
+cat >config.log <<_ACEOF
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+
+It was created by tayga $as_me 0.9.2, which was
+generated by GNU Autoconf 2.65. Invocation command line was
+
+ $ $0 $@
+
+_ACEOF
+exec 5>>config.log
+{
+cat <<_ASUNAME
+## --------- ##
+## Platform. ##
+## --------- ##
+
+hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`
+/bin/uname -X = `(/bin/uname -X) 2>/dev/null || echo unknown`
+
+/bin/arch = `(/bin/arch) 2>/dev/null || echo unknown`
+/usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null || echo unknown`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
+/usr/bin/hostinfo = `(/usr/bin/hostinfo) 2>/dev/null || echo unknown`
+/bin/machine = `(/bin/machine) 2>/dev/null || echo unknown`
+/usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null || echo unknown`
+/bin/universe = `(/bin/universe) 2>/dev/null || echo unknown`
+
+_ASUNAME
+
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ $as_echo "PATH: $as_dir"
+ done
+IFS=$as_save_IFS
+
+} >&5
+
+cat >&5 <<_ACEOF
+
+
+## ----------- ##
+## Core tests. ##
+## ----------- ##
+
+_ACEOF
+
+
+# Keep a trace of the command line.
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Strip out --silent because we don't want to record it for future runs.
+# Also quote any args containing shell meta-characters.
+# Make two passes to allow for proper duplicate-argument suppression.
+ac_configure_args=
+ac_configure_args0=
+ac_configure_args1=
+ac_must_keep_next=false
+for ac_pass in 1 2
+do
+ for ac_arg
+ do
+ case $ac_arg in
+ -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;
+ -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+ | -silent | --silent | --silen | --sile | --sil)
+ continue ;;
+ *\'*)
+ ac_arg=`$as_echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+ esac
+ case $ac_pass in
+ 1) as_fn_append ac_configure_args0 " '$ac_arg'" ;;
+ 2)
+ as_fn_append ac_configure_args1 " '$ac_arg'"
+ if test $ac_must_keep_next = true; then
+ ac_must_keep_next=false # Got value, back to normal.
+ else
+ case $ac_arg in
+ *=* | --config-cache | -C | -disable-* | --disable-* \
+ | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
+ | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
+ | -with-* | --with-* | -without-* | --without-* | --x)
+ case "$ac_configure_args0 " in
+ "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
+ esac
+ ;;
+ -* ) ac_must_keep_next=true ;;
+ esac
+ fi
+ as_fn_append ac_configure_args " '$ac_arg'"
+ ;;
+ esac
+ done
+done
+{ ac_configure_args0=; unset ac_configure_args0;}
+{ ac_configure_args1=; unset ac_configure_args1;}
+
+# When interrupted or exit'd, cleanup temporary files, and complete
+# config.log. We remove comments because anyway the quotes in there
+# would cause problems or look ugly.
+# WARNING: Use '\'' to represent an apostrophe within the trap.
+# WARNING: Do not start the trap code with a newline, due to a FreeBSD 4.0 bug.
+trap 'exit_status=$?
+ # Save into config.log some information that might help in debugging.
+ {
+ echo
+
+ cat <<\_ASBOX
+## ---------------- ##
+## Cache variables. ##
+## ---------------- ##
+_ASBOX
+ echo
+ # The following way of writing the cache mishandles newlines in values,
+(
+ for ac_var in `(set) 2>&1 | sed -n '\''s/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'\''`; do
+ eval ac_val=\$$ac_var
+ case $ac_val in #(
+ *${as_nl}*)
+ case $ac_var in #(
+ *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+ esac
+ case $ac_var in #(
+ _ | IFS | as_nl) ;; #(
+ BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+ *) { eval $ac_var=; unset $ac_var;} ;;
+ esac ;;
+ esac
+ done
+ (set) 2>&1 |
+ case $as_nl`(ac_space='\'' '\''; set) 2>&1` in #(
+ *${as_nl}ac_space=\ *)
+ sed -n \
+ "s/'\''/'\''\\\\'\'''\''/g;
+ s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\''\\2'\''/p"
+ ;; #(
+ *)
+ sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+ ;;
+ esac |
+ sort
+)
+ echo
+
+ cat <<\_ASBOX
+## ----------------- ##
+## Output variables. ##
+## ----------------- ##
+_ASBOX
+ echo
+ for ac_var in $ac_subst_vars
+ do
+ eval ac_val=\$$ac_var
+ case $ac_val in
+ *\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+ esac
+ $as_echo "$ac_var='\''$ac_val'\''"
+ done | sort
+ echo
+
+ if test -n "$ac_subst_files"; then
+ cat <<\_ASBOX
+## ------------------- ##
+## File substitutions. ##
+## ------------------- ##
+_ASBOX
+ echo
+ for ac_var in $ac_subst_files
+ do
+ eval ac_val=\$$ac_var
+ case $ac_val in
+ *\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+ esac
+ $as_echo "$ac_var='\''$ac_val'\''"
+ done | sort
+ echo
+ fi
+
+ if test -s confdefs.h; then
+ cat <<\_ASBOX
+## ----------- ##
+## confdefs.h. ##
+## ----------- ##
+_ASBOX
+ echo
+ cat confdefs.h
+ echo
+ fi
+ test "$ac_signal" != 0 &&
+ $as_echo "$as_me: caught signal $ac_signal"
+ $as_echo "$as_me: exit $exit_status"
+ } >&5
+ rm -f core *.core core.conftest.* &&
+ rm -f -r conftest* confdefs* conf$$* $ac_clean_files &&
+ exit $exit_status
+' 0
+for ac_signal in 1 2 13 15; do
+ trap 'ac_signal='$ac_signal'; as_fn_exit 1' $ac_signal
+done
+ac_signal=0
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -f -r conftest* confdefs.h
+
+$as_echo "/* confdefs.h */" > confdefs.h
+
+# Predefined preprocessor variables.
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_NAME "$PACKAGE_NAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_TARNAME "$PACKAGE_TARNAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_VERSION "$PACKAGE_VERSION"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_STRING "$PACKAGE_STRING"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_BUGREPORT "$PACKAGE_BUGREPORT"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_URL "$PACKAGE_URL"
+_ACEOF
+
+
+# Let the site file select an alternate cache file if it wants to.
+# Prefer an explicitly selected file to automatically selected ones.
+ac_site_file1=NONE
+ac_site_file2=NONE
+if test -n "$CONFIG_SITE"; then
+ ac_site_file1=$CONFIG_SITE
+elif test "x$prefix" != xNONE; then
+ ac_site_file1=$prefix/share/config.site
+ ac_site_file2=$prefix/etc/config.site
+else
+ ac_site_file1=$ac_default_prefix/share/config.site
+ ac_site_file2=$ac_default_prefix/etc/config.site
+fi
+for ac_site_file in "$ac_site_file1" "$ac_site_file2"
+do
+ test "x$ac_site_file" = xNONE && continue
+ if test /dev/null != "$ac_site_file" && test -r "$ac_site_file"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5
+$as_echo "$as_me: loading site script $ac_site_file" >&6;}
+ sed 's/^/| /' "$ac_site_file" >&5
+ . "$ac_site_file"
+ fi
+done
+
+if test -r "$cache_file"; then
+ # Some versions of bash will fail to source /dev/null (special files
+ # actually), so we avoid doing that. DJGPP emulates it as a regular file.
+ if test /dev/null != "$cache_file" && test -f "$cache_file"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5
+$as_echo "$as_me: loading cache $cache_file" >&6;}
+ case $cache_file in
+ [\\/]* | ?:[\\/]* ) . "$cache_file";;
+ *) . "./$cache_file";;
+ esac
+ fi
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5
+$as_echo "$as_me: creating cache $cache_file" >&6;}
+ >$cache_file
+fi
+
+# Check that the precious variables saved in the cache have kept the same
+# value.
+ac_cache_corrupted=false
+for ac_var in $ac_precious_vars; do
+ eval ac_old_set=\$ac_cv_env_${ac_var}_set
+ eval ac_new_set=\$ac_env_${ac_var}_set
+ eval ac_old_val=\$ac_cv_env_${ac_var}_value
+ eval ac_new_val=\$ac_env_${ac_var}_value
+ case $ac_old_set,$ac_new_set in
+ set,)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
+ ac_cache_corrupted=: ;;
+ ,set)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was not set in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
+ ac_cache_corrupted=: ;;
+ ,);;
+ *)
+ if test "x$ac_old_val" != "x$ac_new_val"; then
+ # differences in whitespace do not lead to failure.
+ ac_old_val_w=`echo x $ac_old_val`
+ ac_new_val_w=`echo x $ac_new_val`
+ if test "$ac_old_val_w" != "$ac_new_val_w"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' has changed since the previous run:" >&5
+$as_echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
+ ac_cache_corrupted=:
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&5
+$as_echo "$as_me: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&2;}
+ eval $ac_var=\$ac_old_val
+ fi
+ { $as_echo "$as_me:${as_lineno-$LINENO}: former value: \`$ac_old_val'" >&5
+$as_echo "$as_me: former value: \`$ac_old_val'" >&2;}
+ { $as_echo "$as_me:${as_lineno-$LINENO}: current value: \`$ac_new_val'" >&5
+$as_echo "$as_me: current value: \`$ac_new_val'" >&2;}
+ fi;;
+ esac
+ # Pass precious variables to config.status.
+ if test "$ac_new_set" = set; then
+ case $ac_new_val in
+ *\'*) ac_arg=$ac_var=`$as_echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
+ *) ac_arg=$ac_var=$ac_new_val ;;
+ esac
+ case " $ac_configure_args " in
+ *" '$ac_arg' "*) ;; # Avoid dups. Use of quotes ensures accuracy.
+ *) as_fn_append ac_configure_args " '$ac_arg'" ;;
+ esac
+ fi
+done
+if $ac_cache_corrupted; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+ { $as_echo "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5
+$as_echo "$as_me: error: changes in the environment can compromise the build" >&2;}
+ as_fn_error "run \`make distclean' and/or \`rm $cache_file' and start over" "$LINENO" 5
+fi
+## -------------------- ##
+## Main body of script. ##
+## -------------------- ##
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+am__api_version='1.11'
+
+ac_aux_dir=
+for ac_dir in "$srcdir" "$srcdir/.." "$srcdir/../.."; do
+ for ac_t in install-sh install.sh shtool; do
+ if test -f "$ac_dir/$ac_t"; then
+ ac_aux_dir=$ac_dir
+ ac_install_sh="$ac_aux_dir/$ac_t -c"
+ break 2
+ fi
+ done
+done
+if test -z "$ac_aux_dir"; then
+ as_fn_error "cannot find install-sh, install.sh, or shtool in \"$srcdir\" \"$srcdir/..\" \"$srcdir/../..\"" "$LINENO" 5
+fi
+
+# These three variables are undocumented and unsupported,
+# and are intended to be withdrawn in a future Autoconf release.
+# They can cause serious problems if a builder's source tree is in a directory
+# whose full name contains unusual characters.
+ac_config_guess="$SHELL $ac_aux_dir/config.guess" # Please don't use this var.
+ac_config_sub="$SHELL $ac_aux_dir/config.sub" # Please don't use this var.
+ac_configure="$SHELL $ac_aux_dir/configure" # Please don't use this var.
+
+
+# Find a good install program. We prefer a C program (faster),
+# so one script is as good as another. But avoid the broken or
+# incompatible versions:
+# SysV /etc/install, /usr/sbin/install
+# SunOS /usr/etc/install
+# IRIX /sbin/install
+# AIX /bin/install
+# AmigaOS /C/install, which installs bootblocks on floppy discs
+# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
+# AFS /usr/afsws/bin/install, which mishandles nonexistent args
+# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
+# OS/2's system install, which has a completely different semantic
+# ./install, which can be erroneously created by make from ./install.sh.
+# Reject install programs that cannot install multiple files.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5
+$as_echo_n "checking for a BSD-compatible install... " >&6; }
+if test -z "$INSTALL"; then
+if test "${ac_cv_path_install+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ # Account for people who put trailing slashes in PATH elements.
+case $as_dir/ in #((
+ ./ | .// | /[cC]/* | \
+ /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \
+ ?:[\\/]os2[\\/]install[\\/]* | ?:[\\/]OS2[\\/]INSTALL[\\/]* | \
+ /usr/ucb/* ) ;;
+ *)
+ # OSF1 and SCO ODT 3.0 have their own names for install.
+ # Don't use installbsd from OSF since it installs stuff as root
+ # by default.
+ for ac_prog in ginstall scoinst install; do
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; }; then
+ if test $ac_prog = install &&
+ grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+ # AIX install. It has an incompatible calling convention.
+ :
+ elif test $ac_prog = install &&
+ grep pwplus "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+ # program-specific install script used by HP pwplus--don't use.
+ :
+ else
+ rm -rf conftest.one conftest.two conftest.dir
+ echo one > conftest.one
+ echo two > conftest.two
+ mkdir conftest.dir
+ if "$as_dir/$ac_prog$ac_exec_ext" -c conftest.one conftest.two "`pwd`/conftest.dir" &&
+ test -s conftest.one && test -s conftest.two &&
+ test -s conftest.dir/conftest.one &&
+ test -s conftest.dir/conftest.two
+ then
+ ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c"
+ break 3
+ fi
+ fi
+ fi
+ done
+ done
+ ;;
+esac
+
+ done
+IFS=$as_save_IFS
+
+rm -rf conftest.one conftest.two conftest.dir
+
+fi
+ if test "${ac_cv_path_install+set}" = set; then
+ INSTALL=$ac_cv_path_install
+ else
+ # As a last resort, use the slow shell script. Don't cache a
+ # value for INSTALL within a source directory, because that will
+ # break other packages using the cache if that directory is
+ # removed, or if the value is a relative name.
+ INSTALL=$ac_install_sh
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5
+$as_echo "$INSTALL" >&6; }
+
+# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
+# It thinks the first close brace ends the variable substitution.
+test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
+
+test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}'
+
+test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether build environment is sane" >&5
+$as_echo_n "checking whether build environment is sane... " >&6; }
+# Just in case
+sleep 1
+echo timestamp > conftest.file
+# Reject unsafe characters in $srcdir or the absolute working directory
+# name. Accept space and tab only in the latter.
+am_lf='
+'
+case `pwd` in
+ *[\\\"\#\$\&\'\`$am_lf]*)
+ as_fn_error "unsafe absolute working directory name" "$LINENO" 5;;
+esac
+case $srcdir in
+ *[\\\"\#\$\&\'\`$am_lf\ \ ]*)
+ as_fn_error "unsafe srcdir value: \`$srcdir'" "$LINENO" 5;;
+esac
+
+# Do `set' in a subshell so we don't clobber the current shell's
+# arguments. Must try -L first in case configure is actually a
+# symlink; some systems play weird games with the mod time of symlinks
+# (eg FreeBSD returns the mod time of the symlink's containing
+# directory).
+if (
+ set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
+ if test "$*" = "X"; then
+ # -L didn't work.
+ set X `ls -t "$srcdir/configure" conftest.file`
+ fi
+ rm -f conftest.file
+ if test "$*" != "X $srcdir/configure conftest.file" \
+ && test "$*" != "X conftest.file $srcdir/configure"; then
+
+ # If neither matched, then we have a broken ls. This can happen
+ # if, for instance, CONFIG_SHELL is bash and it inherits a
+ # broken ls alias from the environment. This has actually
+ # happened. Such a system could not be considered "sane".
+ as_fn_error "ls -t appears to fail. Make sure there is not a broken
+alias in your environment" "$LINENO" 5
+ fi
+
+ test "$2" = conftest.file
+ )
+then
+ # Ok.
+ :
+else
+ as_fn_error "newly created file is older than distributed files!
+Check your system clock" "$LINENO" 5
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+test "$program_prefix" != NONE &&
+ program_transform_name="s&^&$program_prefix&;$program_transform_name"
+# Use a double $ so make ignores it.
+test "$program_suffix" != NONE &&
+ program_transform_name="s&\$&$program_suffix&;$program_transform_name"
+# Double any \ or $.
+# By default was `s,x,x', remove it if useless.
+ac_script='s/[\\$]/&&/g;s/;s,x,x,$//'
+program_transform_name=`$as_echo "$program_transform_name" | sed "$ac_script"`
+
+# expand $ac_aux_dir to an absolute path
+am_aux_dir=`cd $ac_aux_dir && pwd`
+
+if test x"${MISSING+set}" != xset; then
+ case $am_aux_dir in
+ *\ * | *\ *)
+ MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
+ *)
+ MISSING="\${SHELL} $am_aux_dir/missing" ;;
+ esac
+fi
+# Use eval to expand $SHELL
+if eval "$MISSING --run true"; then
+ am_missing_run="$MISSING --run "
+else
+ am_missing_run=
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: \`missing' script is too old or missing" >&5
+$as_echo "$as_me: WARNING: \`missing' script is too old or missing" >&2;}
+fi
+
+if test x"${install_sh}" != xset; then
+ case $am_aux_dir in
+ *\ * | *\ *)
+ install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
+ *)
+ install_sh="\${SHELL} $am_aux_dir/install-sh"
+ esac
+fi
+
+# Installed binaries are usually stripped using `strip' when the user
+# run `make install-strip'. However `strip' might not be the right
+# tool to use in cross-compilation environments, therefore Automake
+# will honor the `STRIP' environment variable to overrule this program.
+if test "$cross_compiling" != no; then
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args.
+set dummy ${ac_tool_prefix}strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_STRIP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$STRIP"; then
+ ac_cv_prog_STRIP="$STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_STRIP="${ac_tool_prefix}strip"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+STRIP=$ac_cv_prog_STRIP
+if test -n "$STRIP"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $STRIP" >&5
+$as_echo "$STRIP" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_STRIP"; then
+ ac_ct_STRIP=$STRIP
+ # Extract the first word of "strip", so it can be a program name with args.
+set dummy strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_STRIP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_STRIP"; then
+ ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_STRIP="strip"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP
+if test -n "$ac_ct_STRIP"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_STRIP" >&5
+$as_echo "$ac_ct_STRIP" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_STRIP" = x; then
+ STRIP=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ STRIP=$ac_ct_STRIP
+ fi
+else
+ STRIP="$ac_cv_prog_STRIP"
+fi
+
+fi
+INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a thread-safe mkdir -p" >&5
+$as_echo_n "checking for a thread-safe mkdir -p... " >&6; }
+if test -z "$MKDIR_P"; then
+ if test "${ac_cv_path_mkdir+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/opt/sfw/bin
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_prog in mkdir gmkdir; do
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; } || continue
+ case `"$as_dir/$ac_prog$ac_exec_ext" --version 2>&1` in #(
+ 'mkdir (GNU coreutils) '* | \
+ 'mkdir (coreutils) '* | \
+ 'mkdir (fileutils) '4.1*)
+ ac_cv_path_mkdir=$as_dir/$ac_prog$ac_exec_ext
+ break 3;;
+ esac
+ done
+ done
+ done
+IFS=$as_save_IFS
+
+fi
+
+ test -d ./--version && rmdir ./--version
+ if test "${ac_cv_path_mkdir+set}" = set; then
+ MKDIR_P="$ac_cv_path_mkdir -p"
+ else
+ # As a last resort, use the slow shell script. Don't cache a
+ # value for MKDIR_P within a source directory, because that will
+ # break other packages using the cache if that directory is
+ # removed, or if the value is a relative name.
+ MKDIR_P="$ac_install_sh -d"
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $MKDIR_P" >&5
+$as_echo "$MKDIR_P" >&6; }
+
+mkdir_p="$MKDIR_P"
+case $mkdir_p in
+ [\\/$]* | ?:[\\/]*) ;;
+ */*) mkdir_p="\$(top_builddir)/$mkdir_p" ;;
+esac
+
+for ac_prog in gawk mawk nawk awk
+do
+ # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_AWK+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$AWK"; then
+ ac_cv_prog_AWK="$AWK" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_AWK="$ac_prog"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+AWK=$ac_cv_prog_AWK
+if test -n "$AWK"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AWK" >&5
+$as_echo "$AWK" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ test -n "$AWK" && break
+done
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${MAKE-make} sets \$(MAKE)" >&5
+$as_echo_n "checking whether ${MAKE-make} sets \$(MAKE)... " >&6; }
+set x ${MAKE-make}
+ac_make=`$as_echo "$2" | sed 's/+/p/g; s/[^a-zA-Z0-9_]/_/g'`
+if { as_var=ac_cv_prog_make_${ac_make}_set; eval "test \"\${$as_var+set}\" = set"; }; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat >conftest.make <<\_ACEOF
+SHELL = /bin/sh
+all:
+ @echo '@@@%%%=$(MAKE)=@@@%%%'
+_ACEOF
+# GNU make sometimes prints "make[1]: Entering...", which would confuse us.
+case `${MAKE-make} -f conftest.make 2>/dev/null` in
+ *@@@%%%=?*=@@@%%%*)
+ eval ac_cv_prog_make_${ac_make}_set=yes;;
+ *)
+ eval ac_cv_prog_make_${ac_make}_set=no;;
+esac
+rm -f conftest.make
+fi
+if eval test \$ac_cv_prog_make_${ac_make}_set = yes; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ SET_MAKE=
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ SET_MAKE="MAKE=${MAKE-make}"
+fi
+
+rm -rf .tst 2>/dev/null
+mkdir .tst 2>/dev/null
+if test -d .tst; then
+ am__leading_dot=.
+else
+ am__leading_dot=_
+fi
+rmdir .tst 2>/dev/null
+
+if test "`cd $srcdir && pwd`" != "`pwd`"; then
+ # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
+ # is not polluted with repeated "-I."
+ am__isrc=' -I$(srcdir)'
+ # test to see if srcdir already configured
+ if test -f $srcdir/config.status; then
+ as_fn_error "source directory already configured; run \"make distclean\" there first" "$LINENO" 5
+ fi
+fi
+
+# test whether we have cygpath
+if test -z "$CYGPATH_W"; then
+ if (cygpath --version) >/dev/null 2>/dev/null; then
+ CYGPATH_W='cygpath -w'
+ else
+ CYGPATH_W=echo
+ fi
+fi
+
+
+# Define the identity of the package.
+ PACKAGE='tayga'
+ VERSION='0.9.2'
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE "$PACKAGE"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define VERSION "$VERSION"
+_ACEOF
+
+# Some tools Automake needs.
+
+ACLOCAL=${ACLOCAL-"${am_missing_run}aclocal-${am__api_version}"}
+
+
+AUTOCONF=${AUTOCONF-"${am_missing_run}autoconf"}
+
+
+AUTOMAKE=${AUTOMAKE-"${am_missing_run}automake-${am__api_version}"}
+
+
+AUTOHEADER=${AUTOHEADER-"${am_missing_run}autoheader"}
+
+
+MAKEINFO=${MAKEINFO-"${am_missing_run}makeinfo"}
+
+# We need awk for the "check" target. The system "awk" is bad on
+# some platforms.
+# Always define AMTAR for backward compatibility.
+
+AMTAR=${AMTAR-"${am_missing_run}tar"}
+
+am__tar='${AMTAR} chof - "$$tardir"'; am__untar='${AMTAR} xf -'
+
+
+
+
+
+ac_config_headers="$ac_config_headers config.h"
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$CC"; then
+ ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_CC="${ac_tool_prefix}gcc"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+ ac_ct_CC=$CC
+ # Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_CC"; then
+ ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_CC="gcc"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_CC" = x; then
+ CC=""
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ CC=$ac_ct_CC
+ fi
+else
+ CC="$ac_cv_prog_CC"
+fi
+
+if test -z "$CC"; then
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$CC"; then
+ ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_CC="${ac_tool_prefix}cc"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ fi
+fi
+if test -z "$CC"; then
+ # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$CC"; then
+ ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+ ac_prog_rejected=no
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
+ ac_prog_rejected=yes
+ continue
+ fi
+ ac_cv_prog_CC="cc"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+if test $ac_prog_rejected = yes; then
+ # We found a bogon in the path, so make sure we never use it.
+ set dummy $ac_cv_prog_CC
+ shift
+ if test $# != 0; then
+ # We chose a different compiler from the bogus one.
+ # However, it has the same basename, so the bogon will be chosen
+ # first if we set CC to just the basename; use the full file name.
+ shift
+ ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@"
+ fi
+fi
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$CC"; then
+ if test -n "$ac_tool_prefix"; then
+ for ac_prog in cl.exe
+ do
+ # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$CC"; then
+ ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ test -n "$CC" && break
+ done
+fi
+if test -z "$CC"; then
+ ac_ct_CC=$CC
+ for ac_prog in cl.exe
+do
+ # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_CC"; then
+ ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_CC="$ac_prog"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ test -n "$ac_ct_CC" && break
+done
+
+ if test "x$ac_ct_CC" = x; then
+ CC=""
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ CC=$ac_ct_CC
+ fi
+fi
+
+fi
+
+
+test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "no acceptable C compiler found in \$PATH
+See \`config.log' for more details." "$LINENO" 5; }
+
+# Provide some information about the compiler.
+$as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
+set X $ac_compile
+ac_compiler=$2
+for ac_option in --version -v -V -qversion; do
+ { { ac_try="$ac_compiler $ac_option >&5"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_compiler $ac_option >&5") 2>conftest.err
+ ac_status=$?
+ if test -s conftest.err; then
+ sed '10a\
+... rest of stderr output deleted ...
+ 10q' conftest.err >conftest.er1
+ cat conftest.er1 >&5
+ fi
+ rm -f conftest.er1 conftest.err
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }
+done
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files a.out a.out.dSYM a.exe b.out"
+# Try to create an executable without -o first, disregard a.out.
+# It will help us diagnose broken compilers, and finding out an intuition
+# of exeext.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5
+$as_echo_n "checking whether the C compiler works... " >&6; }
+ac_link_default=`$as_echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
+
+# The possible output files:
+ac_files="a.out conftest.exe conftest a.exe a_out.exe b.out conftest.*"
+
+ac_rmfiles=
+for ac_file in $ac_files
+do
+ case $ac_file in
+ *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+ * ) ac_rmfiles="$ac_rmfiles $ac_file";;
+ esac
+done
+rm -f $ac_rmfiles
+
+if { { ac_try="$ac_link_default"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_link_default") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then :
+ # Autoconf-2.13 could set the ac_cv_exeext variable to `no'.
+# So ignore a value of `no', otherwise this would lead to `EXEEXT = no'
+# in a Makefile. We should not override ac_cv_exeext if it was cached,
+# so that the user can short-circuit this test for compilers unknown to
+# Autoconf.
+for ac_file in $ac_files ''
+do
+ test -f "$ac_file" || continue
+ case $ac_file in
+ *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj )
+ ;;
+ [ab].out )
+ # We found the default executable, but exeext='' is most
+ # certainly right.
+ break;;
+ *.* )
+ if test "${ac_cv_exeext+set}" = set && test "$ac_cv_exeext" != no;
+ then :; else
+ ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+ fi
+ # We set ac_cv_exeext here because the later test for it is not
+ # safe: cross compilers may not add the suffix if given an `-o'
+ # argument, so we may need to know it at that point already.
+ # Even if this section looks crufty: it has the advantage of
+ # actually working.
+ break;;
+ * )
+ break;;
+ esac
+done
+test "$ac_cv_exeext" = no && ac_cv_exeext=
+
+else
+ ac_file=''
+fi
+if test -z "$ac_file"; then :
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+$as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+{ as_fn_set_status 77
+as_fn_error "C compiler cannot create executables
+See \`config.log' for more details." "$LINENO" 5; }; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5
+$as_echo_n "checking for C compiler default output file name... " >&6; }
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_file" >&5
+$as_echo "$ac_file" >&6; }
+ac_exeext=$ac_cv_exeext
+
+rm -f -r a.out a.out.dSYM a.exe conftest$ac_cv_exeext b.out
+ac_clean_files=$ac_clean_files_save
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of executables" >&5
+$as_echo_n "checking for suffix of executables... " >&6; }
+if { { ac_try="$ac_link"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_link") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then :
+ # If both `conftest.exe' and `conftest' are `present' (well, observable)
+# catch `conftest.exe'. For instance with Cygwin, `ls conftest' will
+# work properly (i.e., refer to `conftest.exe'), while it won't with
+# `rm'.
+for ac_file in conftest.exe conftest conftest.*; do
+ test -f "$ac_file" || continue
+ case $ac_file in
+ *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+ *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+ break;;
+ * ) break;;
+ esac
+done
+else
+ { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details." "$LINENO" 5; }
+fi
+rm -f conftest conftest$ac_cv_exeext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
+$as_echo "$ac_cv_exeext" >&6; }
+
+rm -f conftest.$ac_ext
+EXEEXT=$ac_cv_exeext
+ac_exeext=$EXEEXT
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <stdio.h>
+int
+main ()
+{
+FILE *f = fopen ("conftest.out", "w");
+ return ferror (f) || fclose (f) != 0;
+
+ ;
+ return 0;
+}
+_ACEOF
+ac_clean_files="$ac_clean_files conftest.out"
+# Check that the compiler produces executables we can run. If not, either
+# the compiler is broken, or we cross compile.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5
+$as_echo_n "checking whether we are cross compiling... " >&6; }
+if test "$cross_compiling" != yes; then
+ { { ac_try="$ac_link"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_link") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }
+ if { ac_try='./conftest$ac_cv_exeext'
+ { { case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_try") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; }; then
+ cross_compiling=no
+ else
+ if test "$cross_compiling" = maybe; then
+ cross_compiling=yes
+ else
+ { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details." "$LINENO" 5; }
+ fi
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5
+$as_echo "$cross_compiling" >&6; }
+
+rm -f conftest.$ac_ext conftest$ac_cv_exeext conftest.out
+ac_clean_files=$ac_clean_files_save
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5
+$as_echo_n "checking for suffix of object files... " >&6; }
+if test "${ac_cv_objext+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.o conftest.obj
+if { { ac_try="$ac_compile"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_compile") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then :
+ for ac_file in conftest.o conftest.obj conftest.*; do
+ test -f "$ac_file" || continue;
+ case $ac_file in
+ *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM ) ;;
+ *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'`
+ break;;
+ esac
+done
+else
+ $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "cannot compute suffix of object files: cannot compile
+See \`config.log' for more details." "$LINENO" 5; }
+fi
+rm -f conftest.$ac_cv_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5
+$as_echo "$ac_cv_objext" >&6; }
+OBJEXT=$ac_cv_objext
+ac_objext=$OBJEXT
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5
+$as_echo_n "checking whether we are using the GNU C compiler... " >&6; }
+if test "${ac_cv_c_compiler_gnu+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+#ifndef __GNUC__
+ choke me
+#endif
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_compiler_gnu=yes
+else
+ ac_compiler_gnu=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_cv_c_compiler_gnu=$ac_compiler_gnu
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
+$as_echo "$ac_cv_c_compiler_gnu" >&6; }
+if test $ac_compiler_gnu = yes; then
+ GCC=yes
+else
+ GCC=
+fi
+ac_test_CFLAGS=${CFLAGS+set}
+ac_save_CFLAGS=$CFLAGS
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
+$as_echo_n "checking whether $CC accepts -g... " >&6; }
+if test "${ac_cv_prog_cc_g+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_save_c_werror_flag=$ac_c_werror_flag
+ ac_c_werror_flag=yes
+ ac_cv_prog_cc_g=no
+ CFLAGS="-g"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_cv_prog_cc_g=yes
+else
+ CFLAGS=""
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+else
+ ac_c_werror_flag=$ac_save_c_werror_flag
+ CFLAGS="-g"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_cv_prog_cc_g=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ ac_c_werror_flag=$ac_save_c_werror_flag
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
+$as_echo "$ac_cv_prog_cc_g" >&6; }
+if test "$ac_test_CFLAGS" = set; then
+ CFLAGS=$ac_save_CFLAGS
+elif test $ac_cv_prog_cc_g = yes; then
+ if test "$GCC" = yes; then
+ CFLAGS="-g -O2"
+ else
+ CFLAGS="-g"
+ fi
+else
+ if test "$GCC" = yes; then
+ CFLAGS="-O2"
+ else
+ CFLAGS=
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C89" >&5
+$as_echo_n "checking for $CC option to accept ISO C89... " >&6; }
+if test "${ac_cv_prog_cc_c89+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_cv_prog_cc_c89=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <stdarg.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+/* Most of the following tests are stolen from RCS 5.7's src/conf.sh. */
+struct buf { int x; };
+FILE * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+ char **p;
+ int i;
+{
+ return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+ char *s;
+ va_list v;
+ va_start (v,p);
+ s = g (p, va_arg (v,int));
+ va_end (v);
+ return s;
+}
+
+/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default. It has
+ function prototypes and stuff, but not '\xHH' hex character constants.
+ These don't provoke an error unfortunately, instead are silently treated
+ as 'x'. The following induces an error, until -std is added to get
+ proper ANSI mode. Curiously '\x00'!='x' always comes out true, for an
+ array size at least. It's necessary to write '\x00'==0 to get something
+ that's true only with -std. */
+int osf4_cc_array ['\x00' == 0 ? 1 : -1];
+
+/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters
+ inside strings and character constants. */
+#define FOO(x) 'x'
+int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1];
+
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
+int argc;
+char **argv;
+int
+main ()
+{
+return f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1];
+ ;
+ return 0;
+}
+_ACEOF
+for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \
+ -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+do
+ CC="$ac_save_CC $ac_arg"
+ if ac_fn_c_try_compile "$LINENO"; then :
+ ac_cv_prog_cc_c89=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext
+ test "x$ac_cv_prog_cc_c89" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+
+fi
+# AC_CACHE_VAL
+case "x$ac_cv_prog_cc_c89" in
+ x)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+$as_echo "none needed" >&6; } ;;
+ xno)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+$as_echo "unsupported" >&6; } ;;
+ *)
+ CC="$CC $ac_cv_prog_cc_c89"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
+$as_echo "$ac_cv_prog_cc_c89" >&6; } ;;
+esac
+if test "x$ac_cv_prog_cc_c89" != xno; then :
+
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+DEPDIR="${am__leading_dot}deps"
+
+ac_config_commands="$ac_config_commands depfiles"
+
+
+am_make=${MAKE-make}
+cat > confinc << 'END'
+am__doit:
+ @echo this is the am__doit target
+.PHONY: am__doit
+END
+# If we don't find an include directive, just comment out the code.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for style of include used by $am_make" >&5
+$as_echo_n "checking for style of include used by $am_make... " >&6; }
+am__include="#"
+am__quote=
+_am_result=none
+# First try GNU make style include.
+echo "include confinc" > confmf
+# Ignore all kinds of additional output from `make'.
+case `$am_make -s -f confmf 2> /dev/null` in #(
+*the\ am__doit\ target*)
+ am__include=include
+ am__quote=
+ _am_result=GNU
+ ;;
+esac
+# Now try BSD make style include.
+if test "$am__include" = "#"; then
+ echo '.include "confinc"' > confmf
+ case `$am_make -s -f confmf 2> /dev/null` in #(
+ *the\ am__doit\ target*)
+ am__include=.include
+ am__quote="\""
+ _am_result=BSD
+ ;;
+ esac
+fi
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $_am_result" >&5
+$as_echo "$_am_result" >&6; }
+rm -f confinc confmf
+
+# Check whether --enable-dependency-tracking was given.
+if test "${enable_dependency_tracking+set}" = set; then :
+ enableval=$enable_dependency_tracking;
+fi
+
+if test "x$enable_dependency_tracking" != xno; then
+ am_depcomp="$ac_aux_dir/depcomp"
+ AMDEPBACKSLASH='\'
+fi
+ if test "x$enable_dependency_tracking" != xno; then
+ AMDEP_TRUE=
+ AMDEP_FALSE='#'
+else
+ AMDEP_TRUE='#'
+ AMDEP_FALSE=
+fi
+
+
+
+depcc="$CC" am_compiler_list=
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking dependency style of $depcc" >&5
+$as_echo_n "checking dependency style of $depcc... " >&6; }
+if test "${am_cv_CC_dependencies_compiler_type+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
+ # We make a subdir and do the tests there. Otherwise we can end up
+ # making bogus files that we don't know about and never remove. For
+ # instance it was reported that on HP-UX the gcc test will end up
+ # making a dummy file named `D' -- because `-MD' means `put the output
+ # in D'.
+ mkdir conftest.dir
+ # Copy depcomp to subdir because otherwise we won't find it if we're
+ # using a relative directory.
+ cp "$am_depcomp" conftest.dir
+ cd conftest.dir
+ # We will build objects and dependencies in a subdirectory because
+ # it helps to detect inapplicable dependency modes. For instance
+ # both Tru64's cc and ICC support -MD to output dependencies as a
+ # side effect of compilation, but ICC will put the dependencies in
+ # the current directory while Tru64 will put them in the object
+ # directory.
+ mkdir sub
+
+ am_cv_CC_dependencies_compiler_type=none
+ if test "$am_compiler_list" = ""; then
+ am_compiler_list=`sed -n 's/^#*\([a-zA-Z0-9]*\))$/\1/p' < ./depcomp`
+ fi
+ am__universal=false
+ case " $depcc " in #(
+ *\ -arch\ *\ -arch\ *) am__universal=true ;;
+ esac
+
+ for depmode in $am_compiler_list; do
+ # Setup a source with many dependencies, because some compilers
+ # like to wrap large dependency lists on column 80 (with \), and
+ # we should not choose a depcomp mode which is confused by this.
+ #
+ # We need to recreate these files for each test, as the compiler may
+ # overwrite some of them when testing with obscure command lines.
+ # This happens at least with the AIX C compiler.
+ : > sub/conftest.c
+ for i in 1 2 3 4 5 6; do
+ echo '#include "conftst'$i'.h"' >> sub/conftest.c
+ # Using `: > sub/conftst$i.h' creates only sub/conftst1.h with
+ # Solaris 8's {/usr,}/bin/sh.
+ touch sub/conftst$i.h
+ done
+ echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
+
+ # We check with `-c' and `-o' for the sake of the "dashmstdout"
+ # mode. It turns out that the SunPro C++ compiler does not properly
+ # handle `-M -o', and we need to detect this. Also, some Intel
+ # versions had trouble with output in subdirs
+ am__obj=sub/conftest.${OBJEXT-o}
+ am__minus_obj="-o $am__obj"
+ case $depmode in
+ gcc)
+ # This depmode causes a compiler race in universal mode.
+ test "$am__universal" = false || continue
+ ;;
+ nosideeffect)
+ # after this tag, mechanisms are not by side-effect, so they'll
+ # only be used when explicitly requested
+ if test "x$enable_dependency_tracking" = xyes; then
+ continue
+ else
+ break
+ fi
+ ;;
+ msvisualcpp | msvcmsys)
+ # This compiler won't grok `-c -o', but also, the minuso test has
+ # not run yet. These depmodes are late enough in the game, and
+ # so weak that their functioning should not be impacted.
+ am__obj=conftest.${OBJEXT-o}
+ am__minus_obj=
+ ;;
+ none) break ;;
+ esac
+ if depmode=$depmode \
+ source=sub/conftest.c object=$am__obj \
+ depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
+ $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
+ >/dev/null 2>conftest.err &&
+ grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
+ grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
+ grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
+ ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
+ # icc doesn't choke on unknown options, it will just issue warnings
+ # or remarks (even with -Werror). So we grep stderr for any message
+ # that says an option was ignored or not supported.
+ # When given -MP, icc 7.0 and 7.1 complain thusly:
+ # icc: Command line warning: ignoring option '-M'; no argument required
+ # The diagnosis changed in icc 8.0:
+ # icc: Command line remark: option '-MP' not supported
+ if (grep 'ignoring option' conftest.err ||
+ grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
+ am_cv_CC_dependencies_compiler_type=$depmode
+ break
+ fi
+ fi
+ done
+
+ cd ..
+ rm -rf conftest.dir
+else
+ am_cv_CC_dependencies_compiler_type=none
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_CC_dependencies_compiler_type" >&5
+$as_echo "$am_cv_CC_dependencies_compiler_type" >&6; }
+CCDEPMODE=depmode=$am_cv_CC_dependencies_compiler_type
+
+ if
+ test "x$enable_dependency_tracking" != xno \
+ && test "$am_cv_CC_dependencies_compiler_type" = gcc3; then
+ am__fastdepCC_TRUE=
+ am__fastdepCC_FALSE='#'
+else
+ am__fastdepCC_TRUE='#'
+ am__fastdepCC_FALSE=
+fi
+
+
+
+CFLAGS='-g -Wall'
+
+tayga_conf_path=${sysconfdir}/tayga.conf
+
+
+
+ac_config_files="$ac_config_files Makefile"
+
+cat >confcache <<\_ACEOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs, see configure's option --config-cache.
+# It is not useful on other systems. If it contains results you don't
+# want to keep, you may remove or edit it.
+#
+# config.status only pays attention to the cache file if you give it
+# the --recheck option to rerun configure.
+#
+# `ac_cv_env_foo' variables (set or unset) will be overridden when
+# loading this file, other *unset* `ac_cv_foo' will be assigned the
+# following values.
+
+_ACEOF
+
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, we kill variables containing newlines.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+(
+ for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do
+ eval ac_val=\$$ac_var
+ case $ac_val in #(
+ *${as_nl}*)
+ case $ac_var in #(
+ *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+ esac
+ case $ac_var in #(
+ _ | IFS | as_nl) ;; #(
+ BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+ *) { eval $ac_var=; unset $ac_var;} ;;
+ esac ;;
+ esac
+ done
+
+ (set) 2>&1 |
+ case $as_nl`(ac_space=' '; set) 2>&1` in #(
+ *${as_nl}ac_space=\ *)
+ # `set' does not quote correctly, so add quotes: double-quote
+ # substitution turns \\\\ into \\, and sed turns \\ into \.
+ sed -n \
+ "s/'/'\\\\''/g;
+ s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"
+ ;; #(
+ *)
+ # `set' quotes correctly as required by POSIX, so do not add quotes.
+ sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+ ;;
+ esac |
+ sort
+) |
+ sed '
+ /^ac_cv_env_/b end
+ t clear
+ :clear
+ s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/
+ t end
+ s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/
+ :end' >>confcache
+if diff "$cache_file" confcache >/dev/null 2>&1; then :; else
+ if test -w "$cache_file"; then
+ test "x$cache_file" != "x/dev/null" &&
+ { $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5
+$as_echo "$as_me: updating cache $cache_file" >&6;}
+ cat confcache >$cache_file
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5
+$as_echo "$as_me: not updating unwritable cache $cache_file" >&6;}
+ fi
+fi
+rm -f confcache
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+DEFS=-DHAVE_CONFIG_H
+
+ac_libobjs=
+ac_ltlibobjs=
+for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue
+ # 1. Remove the extension, and $U if already installed.
+ ac_script='s/\$U\././;s/\.o$//;s/\.obj$//'
+ ac_i=`$as_echo "$ac_i" | sed "$ac_script"`
+ # 2. Prepend LIBOBJDIR. When used with automake>=1.10 LIBOBJDIR
+ # will be set to the directory where LIBOBJS objects are built.
+ as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext"
+ as_fn_append ac_ltlibobjs " \${LIBOBJDIR}$ac_i"'$U.lo'
+done
+LIBOBJS=$ac_libobjs
+
+LTLIBOBJS=$ac_ltlibobjs
+
+
+ if test -n "$EXEEXT"; then
+ am__EXEEXT_TRUE=
+ am__EXEEXT_FALSE='#'
+else
+ am__EXEEXT_TRUE='#'
+ am__EXEEXT_FALSE=
+fi
+
+if test -z "${AMDEP_TRUE}" && test -z "${AMDEP_FALSE}"; then
+ as_fn_error "conditional \"AMDEP\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${am__fastdepCC_TRUE}" && test -z "${am__fastdepCC_FALSE}"; then
+ as_fn_error "conditional \"am__fastdepCC\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+
+: ${CONFIG_STATUS=./config.status}
+ac_write_fail=0
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files $CONFIG_STATUS"
+{ $as_echo "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5
+$as_echo "$as_me: creating $CONFIG_STATUS" >&6;}
+as_write_fail=0
+cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1
+#! $SHELL
+# Generated by $as_me.
+# Run this file to recreate the current configuration.
+# Compiler output produced by configure, useful for debugging
+# configure, is in config.log if it exists.
+
+debug=false
+ac_cs_recheck=false
+ac_cs_silent=false
+
+SHELL=\${CONFIG_SHELL-$SHELL}
+export SHELL
+_ASEOF
+cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+ emulate sh
+ NULLCMD=:
+ # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+ # is contrary to our usage. Disable this feature.
+ alias -g '${1+"$@"}'='"$@"'
+ setopt NO_GLOB_SUBST
+else
+ case `(set -o) 2>/dev/null` in #(
+ *posix*) :
+ set -o posix ;; #(
+ *) :
+ ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+ && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+ as_echo='print -r --'
+ as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+ as_echo='printf %s\n'
+ as_echo_n='printf %s'
+else
+ if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+ as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+ as_echo_n='/usr/ucb/echo -n'
+ else
+ as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+ as_echo_n_body='eval
+ arg=$1;
+ case $arg in #(
+ *"$as_nl"*)
+ expr "X$arg" : "X\\(.*\\)$as_nl";
+ arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+ esac;
+ expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+ '
+ export as_echo_n_body
+ as_echo_n='sh -c $as_echo_n_body as_echo'
+ fi
+ export as_echo_body
+ as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+ PATH_SEPARATOR=:
+ (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+ (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+ PATH_SEPARATOR=';'
+ }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order. Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" "" $as_nl"
+
+# Find who we are. Look in the path if we contain no directory separator.
+case $0 in #((
+ *[\\/]* ) as_myself=$0 ;;
+ *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+ done
+IFS=$as_save_IFS
+
+ ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+ as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+ $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+ exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh). But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there. '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+ && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+
+# as_fn_error ERROR [LINENO LOG_FD]
+# ---------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with status $?, using 1 if that was 0.
+as_fn_error ()
+{
+ as_status=$?; test $as_status -eq 0 && as_status=1
+ if test "$3"; then
+ as_lineno=${as_lineno-"$2"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ $as_echo "$as_me:${as_lineno-$LINENO}: error: $1" >&$3
+ fi
+ $as_echo "$as_me: error: $1" >&2
+ as_fn_exit $as_status
+} # as_fn_error
+
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+ return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+ set +e
+ as_fn_set_status $1
+ exit $1
+} # as_fn_exit
+
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+ { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+ eval 'as_fn_append ()
+ {
+ eval $1+=\$2
+ }'
+else
+ as_fn_append ()
+ {
+ eval $1=\$$1\$2
+ }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+ eval 'as_fn_arith ()
+ {
+ as_val=$(( $* ))
+ }'
+else
+ as_fn_arith ()
+ {
+ as_val=`expr "$@" || test $? -eq 1`
+ }
+fi # as_fn_arith
+
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+ test "X`expr 00001 : '.*\(...\)'`" = X001; then
+ as_expr=expr
+else
+ as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+ as_basename=basename
+else
+ as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+ as_dirname=dirname
+else
+ as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+ X"$0" : 'X\(//\)$' \| \
+ X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+ sed '/^.*\/\([^/][^/]*\)\/*$/{
+ s//\1/
+ q
+ }
+ /^X\/\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\/\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+ case `echo 'xy\c'` in
+ *c*) ECHO_T=' ';; # ECHO_T is single tab character.
+ xy) ECHO_C='\c';;
+ *) echo `echo ksh88 bug on AIX 6.1` > /dev/null
+ ECHO_T=' ';;
+ esac;;
+*)
+ ECHO_N='-n';;
+esac
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+ rm -f conf$$.dir/conf$$.file
+else
+ rm -f conf$$.dir
+ mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+ if ln -s conf$$.file conf$$ 2>/dev/null; then
+ as_ln_s='ln -s'
+ # ... but there are two gotchas:
+ # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+ # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+ # In both cases, we have to default to `cp -p'.
+ ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+ as_ln_s='cp -p'
+ elif ln conf$$.file conf$$ 2>/dev/null; then
+ as_ln_s=ln
+ else
+ as_ln_s='cp -p'
+ fi
+else
+ as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+ case $as_dir in #(
+ -*) as_dir=./$as_dir;;
+ esac
+ test -d "$as_dir" || eval $as_mkdir_p || {
+ as_dirs=
+ while :; do
+ case $as_dir in #(
+ *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+ *) as_qdir=$as_dir;;
+ esac
+ as_dirs="'$as_qdir' $as_dirs"
+ as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$as_dir" : 'X\(//\)[^/]' \| \
+ X"$as_dir" : 'X\(//\)$' \| \
+ X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+ test -d "$as_dir" && break
+ done
+ test -z "$as_dirs" || eval "mkdir $as_dirs"
+ } || test -d "$as_dir" || as_fn_error "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+if mkdir -p . 2>/dev/null; then
+ as_mkdir_p='mkdir -p "$as_dir"'
+else
+ test -d ./-p && rmdir ./-p
+ as_mkdir_p=false
+fi
+
+if test -x / >/dev/null 2>&1; then
+ as_test_x='test -x'
+else
+ if ls -dL / >/dev/null 2>&1; then
+ as_ls_L_option=L
+ else
+ as_ls_L_option=
+ fi
+ as_test_x='
+ eval sh -c '\''
+ if test -d "$1"; then
+ test -d "$1/.";
+ else
+ case $1 in #(
+ -*)set "./$1";;
+ esac;
+ case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
+ ???[sx]*):;;*)false;;esac;fi
+ '\'' sh
+ '
+fi
+as_executable_p=$as_test_x
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+exec 6>&1
+## ----------------------------------- ##
+## Main body of $CONFIG_STATUS script. ##
+## ----------------------------------- ##
+_ASEOF
+test $as_write_fail = 0 && chmod +x $CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# Save the log message, to keep $0 and so on meaningful, and to
+# report actual input values of CONFIG_FILES etc. instead of their
+# values after options handling.
+ac_log="
+This file was extended by tayga $as_me 0.9.2, which was
+generated by GNU Autoconf 2.65. Invocation command line was
+
+ CONFIG_FILES = $CONFIG_FILES
+ CONFIG_HEADERS = $CONFIG_HEADERS
+ CONFIG_LINKS = $CONFIG_LINKS
+ CONFIG_COMMANDS = $CONFIG_COMMANDS
+ $ $0 $@
+
+on `(hostname || uname -n) 2>/dev/null | sed 1q`
+"
+
+_ACEOF
+
+case $ac_config_files in *"
+"*) set x $ac_config_files; shift; ac_config_files=$*;;
+esac
+
+case $ac_config_headers in *"
+"*) set x $ac_config_headers; shift; ac_config_headers=$*;;
+esac
+
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+# Files that config.status was made for.
+config_files="$ac_config_files"
+config_headers="$ac_config_headers"
+config_commands="$ac_config_commands"
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+ac_cs_usage="\
+\`$as_me' instantiates files and other configuration actions
+from templates according to the current configuration. Unless the files
+and actions are specified as TAGs, all are instantiated by default.
+
+Usage: $0 [OPTION]... [TAG]...
+
+ -h, --help print this help, then exit
+ -V, --version print version number and configuration settings, then exit
+ --config print configuration, then exit
+ -q, --quiet, --silent
+ do not print progress messages
+ -d, --debug don't remove temporary files
+ --recheck update $as_me by reconfiguring in the same conditions
+ --file=FILE[:TEMPLATE]
+ instantiate the configuration file FILE
+ --header=FILE[:TEMPLATE]
+ instantiate the configuration header FILE
+
+Configuration files:
+$config_files
+
+Configuration headers:
+$config_headers
+
+Configuration commands:
+$config_commands
+
+Report bugs to the package provider."
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
+ac_cs_version="\\
+tayga config.status 0.9.2
+configured by $0, generated by GNU Autoconf 2.65,
+ with options \\"\$ac_cs_config\\"
+
+Copyright (C) 2009 Free Software Foundation, Inc.
+This config.status script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it."
+
+ac_pwd='$ac_pwd'
+srcdir='$srcdir'
+INSTALL='$INSTALL'
+MKDIR_P='$MKDIR_P'
+AWK='$AWK'
+test -n "\$AWK" || AWK=awk
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# The default lists apply if the user does not specify any file.
+ac_need_defaults=:
+while test $# != 0
+do
+ case $1 in
+ --*=*)
+ ac_option=`expr "X$1" : 'X\([^=]*\)='`
+ ac_optarg=`expr "X$1" : 'X[^=]*=\(.*\)'`
+ ac_shift=:
+ ;;
+ *)
+ ac_option=$1
+ ac_optarg=$2
+ ac_shift=shift
+ ;;
+ esac
+
+ case $ac_option in
+ # Handling of the options.
+ -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+ ac_cs_recheck=: ;;
+ --version | --versio | --versi | --vers | --ver | --ve | --v | -V )
+ $as_echo "$ac_cs_version"; exit ;;
+ --config | --confi | --conf | --con | --co | --c )
+ $as_echo "$ac_cs_config"; exit ;;
+ --debug | --debu | --deb | --de | --d | -d )
+ debug=: ;;
+ --file | --fil | --fi | --f )
+ $ac_shift
+ case $ac_optarg in
+ *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+ esac
+ as_fn_append CONFIG_FILES " '$ac_optarg'"
+ ac_need_defaults=false;;
+ --header | --heade | --head | --hea )
+ $ac_shift
+ case $ac_optarg in
+ *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+ esac
+ as_fn_append CONFIG_HEADERS " '$ac_optarg'"
+ ac_need_defaults=false;;
+ --he | --h)
+ # Conflict between --help and --header
+ as_fn_error "ambiguous option: \`$1'
+Try \`$0 --help' for more information.";;
+ --help | --hel | -h )
+ $as_echo "$ac_cs_usage"; exit ;;
+ -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+ | -silent | --silent | --silen | --sile | --sil | --si | --s)
+ ac_cs_silent=: ;;
+
+ # This is an error.
+ -*) as_fn_error "unrecognized option: \`$1'
+Try \`$0 --help' for more information." ;;
+
+ *) as_fn_append ac_config_targets " $1"
+ ac_need_defaults=false ;;
+
+ esac
+ shift
+done
+
+ac_configure_extra_args=
+
+if $ac_cs_silent; then
+ exec 6>/dev/null
+ ac_configure_extra_args="$ac_configure_extra_args --silent"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+if \$ac_cs_recheck; then
+ set X '$SHELL' '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+ shift
+ \$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6
+ CONFIG_SHELL='$SHELL'
+ export CONFIG_SHELL
+ exec "\$@"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+exec 5>>config.log
+{
+ echo
+ sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
+## Running $as_me. ##
+_ASBOX
+ $as_echo "$ac_log"
+} >&5
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+#
+# INIT-COMMANDS
+#
+AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+
+# Handling of arguments.
+for ac_config_target in $ac_config_targets
+do
+ case $ac_config_target in
+ "config.h") CONFIG_HEADERS="$CONFIG_HEADERS config.h" ;;
+ "depfiles") CONFIG_COMMANDS="$CONFIG_COMMANDS depfiles" ;;
+ "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
+
+ *) as_fn_error "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
+ esac
+done
+
+
+# If the user did not use the arguments to specify the items to instantiate,
+# then the envvar interface is used. Set only those that are not.
+# We use the long form for the default assignment because of an extremely
+# bizarre bug on SunOS 4.1.3.
+if $ac_need_defaults; then
+ test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
+ test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers
+ test "${CONFIG_COMMANDS+set}" = set || CONFIG_COMMANDS=$config_commands
+fi
+
+# Have a temporary directory for convenience. Make it in the build tree
+# simply because there is no reason against having it here, and in addition,
+# creating and moving files from /tmp can sometimes cause problems.
+# Hook for its removal unless debugging.
+# Note that there is a small window in which the directory will not be cleaned:
+# after its creation but before its name has been assigned to `$tmp'.
+$debug ||
+{
+ tmp=
+ trap 'exit_status=$?
+ { test -z "$tmp" || test ! -d "$tmp" || rm -fr "$tmp"; } && exit $exit_status
+' 0
+ trap 'as_fn_exit 1' 1 2 13 15
+}
+# Create a (secure) tmp directory for tmp files.
+
+{
+ tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` &&
+ test -n "$tmp" && test -d "$tmp"
+} ||
+{
+ tmp=./conf$$-$RANDOM
+ (umask 077 && mkdir "$tmp")
+} || as_fn_error "cannot create a temporary directory in ." "$LINENO" 5
+
+# Set up the scripts for CONFIG_FILES section.
+# No need to generate them if there are no CONFIG_FILES.
+# This happens for instance with `./config.status config.h'.
+if test -n "$CONFIG_FILES"; then
+
+
+ac_cr=`echo X | tr X '\015'`
+# On cygwin, bash can eat \r inside `` if the user requested igncr.
+# But we know of no other shell where ac_cr would be empty at this
+# point, so we can use a bashism as a fallback.
+if test "x$ac_cr" = x; then
+ eval ac_cr=\$\'\\r\'
+fi
+ac_cs_awk_cr=`$AWK 'BEGIN { print "a\rb" }' </dev/null 2>/dev/null`
+if test "$ac_cs_awk_cr" = "a${ac_cr}b"; then
+ ac_cs_awk_cr='\r'
+else
+ ac_cs_awk_cr=$ac_cr
+fi
+
+echo 'BEGIN {' >"$tmp/subs1.awk" &&
+_ACEOF
+
+
+{
+ echo "cat >conf$$subs.awk <<_ACEOF" &&
+ echo "$ac_subst_vars" | sed 's/.*/&!$&$ac_delim/' &&
+ echo "_ACEOF"
+} >conf$$subs.sh ||
+ as_fn_error "could not make $CONFIG_STATUS" "$LINENO" 5
+ac_delim_num=`echo "$ac_subst_vars" | grep -c '$'`
+ac_delim='%!_!# '
+for ac_last_try in false false false false false :; do
+ . ./conf$$subs.sh ||
+ as_fn_error "could not make $CONFIG_STATUS" "$LINENO" 5
+
+ ac_delim_n=`sed -n "s/.*$ac_delim\$/X/p" conf$$subs.awk | grep -c X`
+ if test $ac_delim_n = $ac_delim_num; then
+ break
+ elif $ac_last_try; then
+ as_fn_error "could not make $CONFIG_STATUS" "$LINENO" 5
+ else
+ ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+ fi
+done
+rm -f conf$$subs.sh
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"\$tmp/subs1.awk" <<\\_ACAWK &&
+_ACEOF
+sed -n '
+h
+s/^/S["/; s/!.*/"]=/
+p
+g
+s/^[^!]*!//
+:repl
+t repl
+s/'"$ac_delim"'$//
+t delim
+:nl
+h
+s/\(.\{148\}\)..*/\1/
+t more1
+s/["\\]/\\&/g; s/^/"/; s/$/\\n"\\/
+p
+n
+b repl
+:more1
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t nl
+:delim
+h
+s/\(.\{148\}\)..*/\1/
+t more2
+s/["\\]/\\&/g; s/^/"/; s/$/"/
+p
+b
+:more2
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t delim
+' <conf$$subs.awk | sed '
+/^[^""]/{
+ N
+ s/\n//
+}
+' >>$CONFIG_STATUS || ac_write_fail=1
+rm -f conf$$subs.awk
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+_ACAWK
+cat >>"\$tmp/subs1.awk" <<_ACAWK &&
+ for (key in S) S_is_set[key] = 1
+ FS = "\a"
+
+}
+{
+ line = $ 0
+ nfields = split(line, field, "@")
+ substed = 0
+ len = length(field[1])
+ for (i = 2; i < nfields; i++) {
+ key = field[i]
+ keylen = length(key)
+ if (S_is_set[key]) {
+ value = S[key]
+ line = substr(line, 1, len) "" value "" substr(line, len + keylen + 3)
+ len += length(value) + length(field[++i])
+ substed = 1
+ } else
+ len += 1 + keylen
+ }
+
+ print line
+}
+
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+if sed "s/$ac_cr//" < /dev/null > /dev/null 2>&1; then
+ sed "s/$ac_cr\$//; s/$ac_cr/$ac_cs_awk_cr/g"
+else
+ cat
+fi < "$tmp/subs1.awk" > "$tmp/subs.awk" \
+ || as_fn_error "could not setup config files machinery" "$LINENO" 5
+_ACEOF
+
+# VPATH may cause trouble with some makes, so we remove $(srcdir),
+# ${srcdir} and @srcdir@ from VPATH if srcdir is ".", strip leading and
+# trailing colons and then remove the whole line if VPATH becomes empty
+# (actually we leave an empty line to preserve line numbers).
+if test "x$srcdir" = x.; then
+ ac_vpsub='/^[ ]*VPATH[ ]*=/{
+s/:*\$(srcdir):*/:/
+s/:*\${srcdir}:*/:/
+s/:*@srcdir@:*/:/
+s/^\([^=]*=[ ]*\):*/\1/
+s/:*$//
+s/^[^=]*=[ ]*$//
+}'
+fi
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+fi # test -n "$CONFIG_FILES"
+
+# Set up the scripts for CONFIG_HEADERS section.
+# No need to generate them if there are no CONFIG_HEADERS.
+# This happens for instance with `./config.status Makefile'.
+if test -n "$CONFIG_HEADERS"; then
+cat >"$tmp/defines.awk" <<\_ACAWK ||
+BEGIN {
+_ACEOF
+
+# Transform confdefs.h into an awk script `defines.awk', embedded as
+# here-document in config.status, that substitutes the proper values into
+# config.h.in to produce config.h.
+
+# Create a delimiter string that does not exist in confdefs.h, to ease
+# handling of long lines.
+ac_delim='%!_!# '
+for ac_last_try in false false :; do
+ ac_t=`sed -n "/$ac_delim/p" confdefs.h`
+ if test -z "$ac_t"; then
+ break
+ elif $ac_last_try; then
+ as_fn_error "could not make $CONFIG_HEADERS" "$LINENO" 5
+ else
+ ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+ fi
+done
+
+# For the awk script, D is an array of macro values keyed by name,
+# likewise P contains macro parameters if any. Preserve backslash
+# newline sequences.
+
+ac_word_re=[_$as_cr_Letters][_$as_cr_alnum]*
+sed -n '
+s/.\{148\}/&'"$ac_delim"'/g
+t rset
+:rset
+s/^[ ]*#[ ]*define[ ][ ]*/ /
+t def
+d
+:def
+s/\\$//
+t bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[ ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3"/p
+s/^ \('"$ac_word_re"'\)[ ]*\(.*\)/D["\1"]=" \2"/p
+d
+:bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[ ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3\\\\\\n"\\/p
+t cont
+s/^ \('"$ac_word_re"'\)[ ]*\(.*\)/D["\1"]=" \2\\\\\\n"\\/p
+t cont
+d
+:cont
+n
+s/.\{148\}/&'"$ac_delim"'/g
+t clear
+:clear
+s/\\$//
+t bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/"/p
+d
+:bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/\\\\\\n"\\/p
+b cont
+' <confdefs.h | sed '
+s/'"$ac_delim"'/"\\\
+"/g' >>$CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ for (key in D) D_is_set[key] = 1
+ FS = "\a"
+}
+/^[\t ]*#[\t ]*(define|undef)[\t ]+$ac_word_re([\t (]|\$)/ {
+ line = \$ 0
+ split(line, arg, " ")
+ if (arg[1] == "#") {
+ defundef = arg[2]
+ mac1 = arg[3]
+ } else {
+ defundef = substr(arg[1], 2)
+ mac1 = arg[2]
+ }
+ split(mac1, mac2, "(") #)
+ macro = mac2[1]
+ prefix = substr(line, 1, index(line, defundef) - 1)
+ if (D_is_set[macro]) {
+ # Preserve the white space surrounding the "#".
+ print prefix "define", macro P[macro] D[macro]
+ next
+ } else {
+ # Replace #undef with comments. This is necessary, for example,
+ # in the case of _POSIX_SOURCE, which is predefined and required
+ # on some systems where configure will not decide to define it.
+ if (defundef == "undef") {
+ print "/*", prefix defundef, macro, "*/"
+ next
+ }
+ }
+}
+{ print }
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+ as_fn_error "could not setup config headers machinery" "$LINENO" 5
+fi # test -n "$CONFIG_HEADERS"
+
+
+eval set X " :F $CONFIG_FILES :H $CONFIG_HEADERS :C $CONFIG_COMMANDS"
+shift
+for ac_tag
+do
+ case $ac_tag in
+ :[FHLC]) ac_mode=$ac_tag; continue;;
+ esac
+ case $ac_mode$ac_tag in
+ :[FHL]*:*);;
+ :L* | :C*:*) as_fn_error "invalid tag \`$ac_tag'" "$LINENO" 5;;
+ :[FH]-) ac_tag=-:-;;
+ :[FH]*) ac_tag=$ac_tag:$ac_tag.in;;
+ esac
+ ac_save_IFS=$IFS
+ IFS=:
+ set x $ac_tag
+ IFS=$ac_save_IFS
+ shift
+ ac_file=$1
+ shift
+
+ case $ac_mode in
+ :L) ac_source=$1;;
+ :[FH])
+ ac_file_inputs=
+ for ac_f
+ do
+ case $ac_f in
+ -) ac_f="$tmp/stdin";;
+ *) # Look for the file first in the build tree, then in the source tree
+ # (if the path is not absolute). The absolute path cannot be DOS-style,
+ # because $ac_f cannot contain `:'.
+ test -f "$ac_f" ||
+ case $ac_f in
+ [\\/$]*) false;;
+ *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;
+ esac ||
+ as_fn_error "cannot find input file: \`$ac_f'" "$LINENO" 5;;
+ esac
+ case $ac_f in *\'*) ac_f=`$as_echo "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
+ as_fn_append ac_file_inputs " '$ac_f'"
+ done
+
+ # Let's still pretend it is `configure' which instantiates (i.e., don't
+ # use $as_me), people would be surprised to read:
+ # /* config.h. Generated by config.status. */
+ configure_input='Generated from '`
+ $as_echo "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g'
+ `' by configure.'
+ if test x"$ac_file" != x-; then
+ configure_input="$ac_file. $configure_input"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5
+$as_echo "$as_me: creating $ac_file" >&6;}
+ fi
+ # Neutralize special characters interpreted by sed in replacement strings.
+ case $configure_input in #(
+ *\&* | *\|* | *\\* )
+ ac_sed_conf_input=`$as_echo "$configure_input" |
+ sed 's/[\\\\&|]/\\\\&/g'`;; #(
+ *) ac_sed_conf_input=$configure_input;;
+ esac
+
+ case $ac_tag in
+ *:-:* | *:-) cat >"$tmp/stdin" \
+ || as_fn_error "could not create $ac_file" "$LINENO" 5 ;;
+ esac
+ ;;
+ esac
+
+ ac_dir=`$as_dirname -- "$ac_file" ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$ac_file" : 'X\(//\)[^/]' \| \
+ X"$ac_file" : 'X\(//\)$' \| \
+ X"$ac_file" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$ac_file" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+ as_dir="$ac_dir"; as_fn_mkdir_p
+ ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+ ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+ # A ".." for each directory in $ac_dir_suffix.
+ ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+ case $ac_top_builddir_sub in
+ "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+ *) ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+ esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+ .) # We are building in place.
+ ac_srcdir=.
+ ac_top_srcdir=$ac_top_builddir_sub
+ ac_abs_top_srcdir=$ac_pwd ;;
+ [\\/]* | ?:[\\/]* ) # Absolute name.
+ ac_srcdir=$srcdir$ac_dir_suffix;
+ ac_top_srcdir=$srcdir
+ ac_abs_top_srcdir=$srcdir ;;
+ *) # Relative name.
+ ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+ ac_top_srcdir=$ac_top_build_prefix$srcdir
+ ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+
+ case $ac_mode in
+ :F)
+ #
+ # CONFIG_FILE
+ #
+
+ case $INSTALL in
+ [\\/$]* | ?:[\\/]* ) ac_INSTALL=$INSTALL ;;
+ *) ac_INSTALL=$ac_top_build_prefix$INSTALL ;;
+ esac
+ ac_MKDIR_P=$MKDIR_P
+ case $MKDIR_P in
+ [\\/$]* | ?:[\\/]* ) ;;
+ */*) ac_MKDIR_P=$ac_top_build_prefix$MKDIR_P ;;
+ esac
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# If the template does not know about datarootdir, expand it.
+# FIXME: This hack should be removed a few years after 2.60.
+ac_datarootdir_hack=; ac_datarootdir_seen=
+ac_sed_dataroot='
+/datarootdir/ {
+ p
+ q
+}
+/@datadir@/p
+/@docdir@/p
+/@infodir@/p
+/@localedir@/p
+/@mandir@/p'
+case `eval "sed -n \"\$ac_sed_dataroot\" $ac_file_inputs"` in
+*datarootdir*) ac_datarootdir_seen=yes;;
+*@datadir@*|*@docdir@*|*@infodir@*|*@localedir@*|*@mandir@*)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5
+$as_echo "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;}
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ ac_datarootdir_hack='
+ s&@datadir@&$datadir&g
+ s&@docdir@&$docdir&g
+ s&@infodir@&$infodir&g
+ s&@localedir@&$localedir&g
+ s&@mandir@&$mandir&g
+ s&\\\${datarootdir}&$datarootdir&g' ;;
+esac
+_ACEOF
+
+# Neutralize VPATH when `$srcdir' = `.'.
+# Shell code in configure.ac might set extrasub.
+# FIXME: do we really want to maintain this feature?
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_sed_extra="$ac_vpsub
+$extrasub
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+:t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
+s|@configure_input@|$ac_sed_conf_input|;t t
+s&@top_builddir@&$ac_top_builddir_sub&;t t
+s&@top_build_prefix@&$ac_top_build_prefix&;t t
+s&@srcdir@&$ac_srcdir&;t t
+s&@abs_srcdir@&$ac_abs_srcdir&;t t
+s&@top_srcdir@&$ac_top_srcdir&;t t
+s&@abs_top_srcdir@&$ac_abs_top_srcdir&;t t
+s&@builddir@&$ac_builddir&;t t
+s&@abs_builddir@&$ac_abs_builddir&;t t
+s&@abs_top_builddir@&$ac_abs_top_builddir&;t t
+s&@INSTALL@&$ac_INSTALL&;t t
+s&@MKDIR_P@&$ac_MKDIR_P&;t t
+$ac_datarootdir_hack
+"
+eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$tmp/subs.awk" >$tmp/out \
+ || as_fn_error "could not create $ac_file" "$LINENO" 5
+
+test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
+ { ac_out=`sed -n '/\${datarootdir}/p' "$tmp/out"`; test -n "$ac_out"; } &&
+ { ac_out=`sed -n '/^[ ]*datarootdir[ ]*:*=/p' "$tmp/out"`; test -z "$ac_out"; } &&
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined. Please make sure it is defined." >&5
+$as_echo "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined. Please make sure it is defined." >&2;}
+
+ rm -f "$tmp/stdin"
+ case $ac_file in
+ -) cat "$tmp/out" && rm -f "$tmp/out";;
+ *) rm -f "$ac_file" && mv "$tmp/out" "$ac_file";;
+ esac \
+ || as_fn_error "could not create $ac_file" "$LINENO" 5
+ ;;
+ :H)
+ #
+ # CONFIG_HEADER
+ #
+ if test x"$ac_file" != x-; then
+ {
+ $as_echo "/* $configure_input */" \
+ && eval '$AWK -f "$tmp/defines.awk"' "$ac_file_inputs"
+ } >"$tmp/config.h" \
+ || as_fn_error "could not create $ac_file" "$LINENO" 5
+ if diff "$ac_file" "$tmp/config.h" >/dev/null 2>&1; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5
+$as_echo "$as_me: $ac_file is unchanged" >&6;}
+ else
+ rm -f "$ac_file"
+ mv "$tmp/config.h" "$ac_file" \
+ || as_fn_error "could not create $ac_file" "$LINENO" 5
+ fi
+ else
+ $as_echo "/* $configure_input */" \
+ && eval '$AWK -f "$tmp/defines.awk"' "$ac_file_inputs" \
+ || as_fn_error "could not create -" "$LINENO" 5
+ fi
+# Compute "$ac_file"'s index in $config_headers.
+_am_arg="$ac_file"
+_am_stamp_count=1
+for _am_header in $config_headers :; do
+ case $_am_header in
+ $_am_arg | $_am_arg:* )
+ break ;;
+ * )
+ _am_stamp_count=`expr $_am_stamp_count + 1` ;;
+ esac
+done
+echo "timestamp for $_am_arg" >`$as_dirname -- "$_am_arg" ||
+$as_expr X"$_am_arg" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$_am_arg" : 'X\(//\)[^/]' \| \
+ X"$_am_arg" : 'X\(//\)$' \| \
+ X"$_am_arg" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$_am_arg" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`/stamp-h$_am_stamp_count
+ ;;
+
+ :C) { $as_echo "$as_me:${as_lineno-$LINENO}: executing $ac_file commands" >&5
+$as_echo "$as_me: executing $ac_file commands" >&6;}
+ ;;
+ esac
+
+
+ case $ac_file$ac_mode in
+ "depfiles":C) test x"$AMDEP_TRUE" != x"" || {
+ # Autoconf 2.62 quotes --file arguments for eval, but not when files
+ # are listed without --file. Let's play safe and only enable the eval
+ # if we detect the quoting.
+ case $CONFIG_FILES in
+ *\'*) eval set x "$CONFIG_FILES" ;;
+ *) set x $CONFIG_FILES ;;
+ esac
+ shift
+ for mf
+ do
+ # Strip MF so we end up with the name of the file.
+ mf=`echo "$mf" | sed -e 's/:.*$//'`
+ # Check whether this is an Automake generated Makefile or not.
+ # We used to match only the files named `Makefile.in', but
+ # some people rename them; so instead we look at the file content.
+ # Grep'ing the first line is not enough: some people post-process
+ # each Makefile.in and add a new line on top of each file to say so.
+ # Grep'ing the whole file is not good either: AIX grep has a line
+ # limit of 2048, but all sed's we know have understand at least 4000.
+ if sed -n 's,^#.*generated by automake.*,X,p' "$mf" | grep X >/dev/null 2>&1; then
+ dirpart=`$as_dirname -- "$mf" ||
+$as_expr X"$mf" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$mf" : 'X\(//\)[^/]' \| \
+ X"$mf" : 'X\(//\)$' \| \
+ X"$mf" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$mf" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+ else
+ continue
+ fi
+ # Extract the definition of DEPDIR, am__include, and am__quote
+ # from the Makefile without running `make'.
+ DEPDIR=`sed -n 's/^DEPDIR = //p' < "$mf"`
+ test -z "$DEPDIR" && continue
+ am__include=`sed -n 's/^am__include = //p' < "$mf"`
+ test -z "am__include" && continue
+ am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
+ # When using ansi2knr, U may be empty or an underscore; expand it
+ U=`sed -n 's/^U = //p' < "$mf"`
+ # Find all dependency output files, they are included files with
+ # $(DEPDIR) in their names. We invoke sed twice because it is the
+ # simplest approach to changing $(DEPDIR) to its actual value in the
+ # expansion.
+ for file in `sed -n "
+ s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
+ sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g' -e 's/\$U/'"$U"'/g'`; do
+ # Make sure the directory exists.
+ test -f "$dirpart/$file" && continue
+ fdir=`$as_dirname -- "$file" ||
+$as_expr X"$file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$file" : 'X\(//\)[^/]' \| \
+ X"$file" : 'X\(//\)$' \| \
+ X"$file" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$file" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+ as_dir=$dirpart/$fdir; as_fn_mkdir_p
+ # echo "creating $dirpart/$file"
+ echo '# dummy' > "$dirpart/$file"
+ done
+ done
+}
+ ;;
+
+ esac
+done # for ac_tag
+
+
+as_fn_exit 0
+_ACEOF
+ac_clean_files=$ac_clean_files_save
+
+test $ac_write_fail = 0 ||
+ as_fn_error "write failure creating $CONFIG_STATUS" "$LINENO" 5
+
+
+# configure is writing to config.log, and then calls config.status.
+# config.status does its own redirection, appending to config.log.
+# Unfortunately, on DOS this fails, as config.log is still kept open
+# by configure, so config.status won't be able to write to it; its
+# output is simply discarded. So we exec the FD to /dev/null,
+# effectively closing config.log, so it can be properly (re)opened and
+# appended to by config.status. When coming back to configure, we
+# need to make the FD available again.
+if test "$no_create" != yes; then
+ ac_cs_success=:
+ ac_config_status_args=
+ test "$silent" = yes &&
+ ac_config_status_args="$ac_config_status_args --quiet"
+ exec 5>/dev/null
+ $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
+ exec 5>>config.log
+ # Use ||, not &&, to avoid exiting from the if with $? = 1, which
+ # would make configure fail if this is the last instruction.
+ $ac_cs_success || as_fn_exit $?
+fi
+if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
+$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
+fi
+
--- /dev/null
+AC_INIT(tayga, 0.9.2)
+AC_CONFIG_SRCDIR(nat64.c)
+AM_INIT_AUTOMAKE([foreign dist-bzip2])
+AC_CONFIG_HEADERS(config.h)
+
+AC_PROG_CC
+
+CFLAGS='-g -Wall'
+
+tayga_conf_path=${sysconfdir}/tayga.conf
+
+AC_SUBST(tayga_conf_path)
+
+AC_OUTPUT([Makefile])
--- /dev/null
+#! /bin/sh
+# depcomp - compile a program generating dependencies as side-effects
+
+scriptversion=2009-04-28.21; # UTC
+
+# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009 Free
+# Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
+
+case $1 in
+ '')
+ echo "$0: No command. Try \`$0 --help' for more information." 1>&2
+ exit 1;
+ ;;
+ -h | --h*)
+ cat <<\EOF
+Usage: depcomp [--help] [--version] PROGRAM [ARGS]
+
+Run PROGRAMS ARGS to compile a file, generating dependencies
+as side-effects.
+
+Environment variables:
+ depmode Dependency tracking mode.
+ source Source file read by `PROGRAMS ARGS'.
+ object Object file output by `PROGRAMS ARGS'.
+ DEPDIR directory where to store dependencies.
+ depfile Dependency file to output.
+ tmpdepfile Temporary file to use when outputing dependencies.
+ libtool Whether libtool is used (yes/no).
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+ exit $?
+ ;;
+ -v | --v*)
+ echo "depcomp $scriptversion"
+ exit $?
+ ;;
+esac
+
+if test -z "$depmode" || test -z "$source" || test -z "$object"; then
+ echo "depcomp: Variables source, object and depmode must be set" 1>&2
+ exit 1
+fi
+
+# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
+depfile=${depfile-`echo "$object" |
+ sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
+tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
+
+rm -f "$tmpdepfile"
+
+# Some modes work just like other modes, but use different flags. We
+# parameterize here, but still list the modes in the big case below,
+# to make depend.m4 easier to write. Note that we *cannot* use a case
+# here, because this file can only contain one case statement.
+if test "$depmode" = hp; then
+ # HP compiler uses -M and no extra arg.
+ gccflag=-M
+ depmode=gcc
+fi
+
+if test "$depmode" = dashXmstdout; then
+ # This is just like dashmstdout with a different argument.
+ dashmflag=-xM
+ depmode=dashmstdout
+fi
+
+cygpath_u="cygpath -u -f -"
+if test "$depmode" = msvcmsys; then
+ # This is just like msvisualcpp but w/o cygpath translation.
+ # Just convert the backslash-escaped backslashes to single forward
+ # slashes to satisfy depend.m4
+ cygpath_u="sed s,\\\\\\\\,/,g"
+ depmode=msvisualcpp
+fi
+
+case "$depmode" in
+gcc3)
+## gcc 3 implements dependency tracking that does exactly what
+## we want. Yay! Note: for some reason libtool 1.4 doesn't like
+## it if -MD -MP comes after the -MF stuff. Hmm.
+## Unfortunately, FreeBSD c89 acceptance of flags depends upon
+## the command line argument order; so add the flags where they
+## appear in depend2.am. Note that the slowdown incurred here
+## affects only configure: in makefiles, %FASTDEP% shortcuts this.
+ for arg
+ do
+ case $arg in
+ -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
+ *) set fnord "$@" "$arg" ;;
+ esac
+ shift # fnord
+ shift # $arg
+ done
+ "$@"
+ stat=$?
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile"
+ exit $stat
+ fi
+ mv "$tmpdepfile" "$depfile"
+ ;;
+
+gcc)
+## There are various ways to get dependency output from gcc. Here's
+## why we pick this rather obscure method:
+## - Don't want to use -MD because we'd like the dependencies to end
+## up in a subdir. Having to rename by hand is ugly.
+## (We might end up doing this anyway to support other compilers.)
+## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
+## -MM, not -M (despite what the docs say).
+## - Using -M directly means running the compiler twice (even worse
+## than renaming).
+ if test -z "$gccflag"; then
+ gccflag=-MD,
+ fi
+ "$@" -Wp,"$gccflag$tmpdepfile"
+ stat=$?
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile"
+ exit $stat
+ fi
+ rm -f "$depfile"
+ echo "$object : \\" > "$depfile"
+ alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
+## The second -e expression handles DOS-style file names with drive letters.
+ sed -e 's/^[^:]*: / /' \
+ -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
+## This next piece of magic avoids the `deleted header file' problem.
+## The problem is that when a header file which appears in a .P file
+## is deleted, the dependency causes make to die (because there is
+## typically no way to rebuild the header). We avoid this by adding
+## dummy dependencies for each header file. Too bad gcc doesn't do
+## this for us directly.
+ tr ' ' '
+' < "$tmpdepfile" |
+## Some versions of gcc put a space before the `:'. On the theory
+## that the space means something, we add a space to the output as
+## well.
+## Some versions of the HPUX 10.20 sed can't process this invocation
+## correctly. Breaking it into two sed invocations is a workaround.
+ sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
+ rm -f "$tmpdepfile"
+ ;;
+
+hp)
+ # This case exists only to let depend.m4 do its work. It works by
+ # looking at the text of this script. This case will never be run,
+ # since it is checked for above.
+ exit 1
+ ;;
+
+sgi)
+ if test "$libtool" = yes; then
+ "$@" "-Wp,-MDupdate,$tmpdepfile"
+ else
+ "$@" -MDupdate "$tmpdepfile"
+ fi
+ stat=$?
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile"
+ exit $stat
+ fi
+ rm -f "$depfile"
+
+ if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
+ echo "$object : \\" > "$depfile"
+
+ # Clip off the initial element (the dependent). Don't try to be
+ # clever and replace this with sed code, as IRIX sed won't handle
+ # lines with more than a fixed number of characters (4096 in
+ # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
+ # the IRIX cc adds comments like `#:fec' to the end of the
+ # dependency line.
+ tr ' ' '
+' < "$tmpdepfile" \
+ | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
+ tr '
+' ' ' >> "$depfile"
+ echo >> "$depfile"
+
+ # The second pass generates a dummy entry for each header file.
+ tr ' ' '
+' < "$tmpdepfile" \
+ | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
+ >> "$depfile"
+ else
+ # The sourcefile does not contain any dependencies, so just
+ # store a dummy comment line, to avoid errors with the Makefile
+ # "include basename.Plo" scheme.
+ echo "#dummy" > "$depfile"
+ fi
+ rm -f "$tmpdepfile"
+ ;;
+
+aix)
+ # The C for AIX Compiler uses -M and outputs the dependencies
+ # in a .u file. In older versions, this file always lives in the
+ # current directory. Also, the AIX compiler puts `$object:' at the
+ # start of each line; $object doesn't have directory information.
+ # Version 6 uses the directory in both cases.
+ dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
+ test "x$dir" = "x$object" && dir=
+ base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
+ if test "$libtool" = yes; then
+ tmpdepfile1=$dir$base.u
+ tmpdepfile2=$base.u
+ tmpdepfile3=$dir.libs/$base.u
+ "$@" -Wc,-M
+ else
+ tmpdepfile1=$dir$base.u
+ tmpdepfile2=$dir$base.u
+ tmpdepfile3=$dir$base.u
+ "$@" -M
+ fi
+ stat=$?
+
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+ exit $stat
+ fi
+
+ for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+ do
+ test -f "$tmpdepfile" && break
+ done
+ if test -f "$tmpdepfile"; then
+ # Each line is of the form `foo.o: dependent.h'.
+ # Do two passes, one to just change these to
+ # `$object: dependent.h' and one to simply `dependent.h:'.
+ sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
+ # That's a tab and a space in the [].
+ sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
+ else
+ # The sourcefile does not contain any dependencies, so just
+ # store a dummy comment line, to avoid errors with the Makefile
+ # "include basename.Plo" scheme.
+ echo "#dummy" > "$depfile"
+ fi
+ rm -f "$tmpdepfile"
+ ;;
+
+icc)
+ # Intel's C compiler understands `-MD -MF file'. However on
+ # icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
+ # ICC 7.0 will fill foo.d with something like
+ # foo.o: sub/foo.c
+ # foo.o: sub/foo.h
+ # which is wrong. We want:
+ # sub/foo.o: sub/foo.c
+ # sub/foo.o: sub/foo.h
+ # sub/foo.c:
+ # sub/foo.h:
+ # ICC 7.1 will output
+ # foo.o: sub/foo.c sub/foo.h
+ # and will wrap long lines using \ :
+ # foo.o: sub/foo.c ... \
+ # sub/foo.h ... \
+ # ...
+
+ "$@" -MD -MF "$tmpdepfile"
+ stat=$?
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile"
+ exit $stat
+ fi
+ rm -f "$depfile"
+ # Each line is of the form `foo.o: dependent.h',
+ # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
+ # Do two passes, one to just change these to
+ # `$object: dependent.h' and one to simply `dependent.h:'.
+ sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
+ # Some versions of the HPUX 10.20 sed can't process this invocation
+ # correctly. Breaking it into two sed invocations is a workaround.
+ sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
+ sed -e 's/$/ :/' >> "$depfile"
+ rm -f "$tmpdepfile"
+ ;;
+
+hp2)
+ # The "hp" stanza above does not work with aCC (C++) and HP's ia64
+ # compilers, which have integrated preprocessors. The correct option
+ # to use with these is +Maked; it writes dependencies to a file named
+ # 'foo.d', which lands next to the object file, wherever that
+ # happens to be.
+ # Much of this is similar to the tru64 case; see comments there.
+ dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
+ test "x$dir" = "x$object" && dir=
+ base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
+ if test "$libtool" = yes; then
+ tmpdepfile1=$dir$base.d
+ tmpdepfile2=$dir.libs/$base.d
+ "$@" -Wc,+Maked
+ else
+ tmpdepfile1=$dir$base.d
+ tmpdepfile2=$dir$base.d
+ "$@" +Maked
+ fi
+ stat=$?
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile1" "$tmpdepfile2"
+ exit $stat
+ fi
+
+ for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
+ do
+ test -f "$tmpdepfile" && break
+ done
+ if test -f "$tmpdepfile"; then
+ sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
+ # Add `dependent.h:' lines.
+ sed -ne '2,${
+ s/^ *//
+ s/ \\*$//
+ s/$/:/
+ p
+ }' "$tmpdepfile" >> "$depfile"
+ else
+ echo "#dummy" > "$depfile"
+ fi
+ rm -f "$tmpdepfile" "$tmpdepfile2"
+ ;;
+
+tru64)
+ # The Tru64 compiler uses -MD to generate dependencies as a side
+ # effect. `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
+ # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
+ # dependencies in `foo.d' instead, so we check for that too.
+ # Subdirectories are respected.
+ dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
+ test "x$dir" = "x$object" && dir=
+ base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
+
+ if test "$libtool" = yes; then
+ # With Tru64 cc, shared objects can also be used to make a
+ # static library. This mechanism is used in libtool 1.4 series to
+ # handle both shared and static libraries in a single compilation.
+ # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
+ #
+ # With libtool 1.5 this exception was removed, and libtool now
+ # generates 2 separate objects for the 2 libraries. These two
+ # compilations output dependencies in $dir.libs/$base.o.d and
+ # in $dir$base.o.d. We have to check for both files, because
+ # one of the two compilations can be disabled. We should prefer
+ # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
+ # automatically cleaned when .libs/ is deleted, while ignoring
+ # the former would cause a distcleancheck panic.
+ tmpdepfile1=$dir.libs/$base.lo.d # libtool 1.4
+ tmpdepfile2=$dir$base.o.d # libtool 1.5
+ tmpdepfile3=$dir.libs/$base.o.d # libtool 1.5
+ tmpdepfile4=$dir.libs/$base.d # Compaq CCC V6.2-504
+ "$@" -Wc,-MD
+ else
+ tmpdepfile1=$dir$base.o.d
+ tmpdepfile2=$dir$base.d
+ tmpdepfile3=$dir$base.d
+ tmpdepfile4=$dir$base.d
+ "$@" -MD
+ fi
+
+ stat=$?
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
+ exit $stat
+ fi
+
+ for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
+ do
+ test -f "$tmpdepfile" && break
+ done
+ if test -f "$tmpdepfile"; then
+ sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
+ # That's a tab and a space in the [].
+ sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
+ else
+ echo "#dummy" > "$depfile"
+ fi
+ rm -f "$tmpdepfile"
+ ;;
+
+#nosideeffect)
+ # This comment above is used by automake to tell side-effect
+ # dependency tracking mechanisms from slower ones.
+
+dashmstdout)
+ # Important note: in order to support this mode, a compiler *must*
+ # always write the preprocessed file to stdout, regardless of -o.
+ "$@" || exit $?
+
+ # Remove the call to Libtool.
+ if test "$libtool" = yes; then
+ while test "X$1" != 'X--mode=compile'; do
+ shift
+ done
+ shift
+ fi
+
+ # Remove `-o $object'.
+ IFS=" "
+ for arg
+ do
+ case $arg in
+ -o)
+ shift
+ ;;
+ $object)
+ shift
+ ;;
+ *)
+ set fnord "$@" "$arg"
+ shift # fnord
+ shift # $arg
+ ;;
+ esac
+ done
+
+ test -z "$dashmflag" && dashmflag=-M
+ # Require at least two characters before searching for `:'
+ # in the target name. This is to cope with DOS-style filenames:
+ # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
+ "$@" $dashmflag |
+ sed 's:^[ ]*[^: ][^:][^:]*\:[ ]*:'"$object"'\: :' > "$tmpdepfile"
+ rm -f "$depfile"
+ cat < "$tmpdepfile" > "$depfile"
+ tr ' ' '
+' < "$tmpdepfile" | \
+## Some versions of the HPUX 10.20 sed can't process this invocation
+## correctly. Breaking it into two sed invocations is a workaround.
+ sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
+ rm -f "$tmpdepfile"
+ ;;
+
+dashXmstdout)
+ # This case only exists to satisfy depend.m4. It is never actually
+ # run, as this mode is specially recognized in the preamble.
+ exit 1
+ ;;
+
+makedepend)
+ "$@" || exit $?
+ # Remove any Libtool call
+ if test "$libtool" = yes; then
+ while test "X$1" != 'X--mode=compile'; do
+ shift
+ done
+ shift
+ fi
+ # X makedepend
+ shift
+ cleared=no eat=no
+ for arg
+ do
+ case $cleared in
+ no)
+ set ""; shift
+ cleared=yes ;;
+ esac
+ if test $eat = yes; then
+ eat=no
+ continue
+ fi
+ case "$arg" in
+ -D*|-I*)
+ set fnord "$@" "$arg"; shift ;;
+ # Strip any option that makedepend may not understand. Remove
+ # the object too, otherwise makedepend will parse it as a source file.
+ -arch)
+ eat=yes ;;
+ -*|$object)
+ ;;
+ *)
+ set fnord "$@" "$arg"; shift ;;
+ esac
+ done
+ obj_suffix=`echo "$object" | sed 's/^.*\././'`
+ touch "$tmpdepfile"
+ ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
+ rm -f "$depfile"
+ cat < "$tmpdepfile" > "$depfile"
+ sed '1,2d' "$tmpdepfile" | tr ' ' '
+' | \
+## Some versions of the HPUX 10.20 sed can't process this invocation
+## correctly. Breaking it into two sed invocations is a workaround.
+ sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
+ rm -f "$tmpdepfile" "$tmpdepfile".bak
+ ;;
+
+cpp)
+ # Important note: in order to support this mode, a compiler *must*
+ # always write the preprocessed file to stdout.
+ "$@" || exit $?
+
+ # Remove the call to Libtool.
+ if test "$libtool" = yes; then
+ while test "X$1" != 'X--mode=compile'; do
+ shift
+ done
+ shift
+ fi
+
+ # Remove `-o $object'.
+ IFS=" "
+ for arg
+ do
+ case $arg in
+ -o)
+ shift
+ ;;
+ $object)
+ shift
+ ;;
+ *)
+ set fnord "$@" "$arg"
+ shift # fnord
+ shift # $arg
+ ;;
+ esac
+ done
+
+ "$@" -E |
+ sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+ -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
+ sed '$ s: \\$::' > "$tmpdepfile"
+ rm -f "$depfile"
+ echo "$object : \\" > "$depfile"
+ cat < "$tmpdepfile" >> "$depfile"
+ sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
+ rm -f "$tmpdepfile"
+ ;;
+
+msvisualcpp)
+ # Important note: in order to support this mode, a compiler *must*
+ # always write the preprocessed file to stdout.
+ "$@" || exit $?
+
+ # Remove the call to Libtool.
+ if test "$libtool" = yes; then
+ while test "X$1" != 'X--mode=compile'; do
+ shift
+ done
+ shift
+ fi
+
+ IFS=" "
+ for arg
+ do
+ case "$arg" in
+ -o)
+ shift
+ ;;
+ $object)
+ shift
+ ;;
+ "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
+ set fnord "$@"
+ shift
+ shift
+ ;;
+ *)
+ set fnord "$@" "$arg"
+ shift
+ shift
+ ;;
+ esac
+ done
+ "$@" -E 2>/dev/null |
+ sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
+ rm -f "$depfile"
+ echo "$object : \\" > "$depfile"
+ sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s:: \1 \\:p' >> "$depfile"
+ echo " " >> "$depfile"
+ sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
+ rm -f "$tmpdepfile"
+ ;;
+
+msvcmsys)
+ # This case exists only to let depend.m4 do its work. It works by
+ # looking at the text of this script. This case will never be run,
+ # since it is checked for above.
+ exit 1
+ ;;
+
+none)
+ exec "$@"
+ ;;
+
+*)
+ echo "Unknown depmode $depmode" 1>&2
+ exit 1
+ ;;
+esac
+
+exit 0
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:
--- /dev/null
+/*
+ * dynamic.c -- dynamic address mapper
+ *
+ * part of TAYGA <http://www.litech.org/tayga/>
+ * Copyright (C) 2010 Nathan Lutchansky <lutchann@litech.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <tayga.h>
+
+#define MAP_FILE "dynamic.map"
+#define TMP_MAP_FILE "dynamic.map~~"
+
+extern struct config *gcfg;
+extern time_t now;
+
+static struct map_dynamic *alloc_map_dynamic(const struct in6_addr *addr6,
+ const struct in_addr *addr4, struct free_addr *f)
+{
+ struct map_dynamic *d;
+ uint32_t a = ntohl(addr4->s_addr);
+
+ d = (struct map_dynamic *)malloc(sizeof(struct map_dynamic));
+ if (!d) {
+ slog(LOG_CRIT, "Unable to allocate memory\n");
+ return NULL;
+ }
+ memset(d, 0, sizeof(struct map_dynamic));
+ INIT_LIST_HEAD(&d->list);
+
+ d->map4.type = MAP_TYPE_DYNAMIC_HOST;
+ d->map4.addr = *addr4;
+ d->map4.prefix_len = 32;
+ calc_ip4_mask(&d->map4.mask, NULL, 32);
+ INIT_LIST_HEAD(&d->map4.list);
+
+ d->map6.type = MAP_TYPE_DYNAMIC_HOST;
+ d->map6.addr = *addr6;
+ d->map6.prefix_len = 128;
+ calc_ip6_mask(&d->map6.mask, NULL, 128);
+ INIT_LIST_HEAD(&d->map6.list);
+
+ d->free.addr = a;
+ d->free.count = f->count - (a - f->addr);
+ f->count = a - f->addr - 1;
+ INIT_LIST_HEAD(&d->free.list);
+ list_add(&d->free.list, &f->list);
+
+ return d;
+}
+
+static void move_to_mapped(struct map_dynamic *d, struct dynamic_pool *pool)
+{
+ insert_map4(&d->map4, NULL);
+ insert_map6(&d->map6, NULL);
+ list_add(&d->list, &pool->mapped_list);
+}
+
+static void move_to_dormant(struct map_dynamic *d, struct dynamic_pool *pool)
+{
+ struct list_head *entry;
+ struct map_dynamic *s;
+
+ list_del(&d->map4.list);
+ list_del(&d->map6.list);
+
+ if (list_empty(&pool->dormant_list)) {
+ list_add_tail(&d->list, &pool->dormant_list);
+ return;
+ }
+
+ s = list_entry(pool->dormant_list.prev, struct map_dynamic, list);
+ if (s->last_use >= d->last_use) {
+ list_add_tail(&d->list, &pool->dormant_list);
+ return;
+ }
+
+ list_for_each(entry, &pool->dormant_list) {
+ s = list_entry(entry, struct map_dynamic, list);
+ if (s->last_use < d->last_use)
+ break;
+ }
+ list_add_tail(&d->list, entry);
+}
+
+static void print_dyn_change(char *str, struct map_dynamic *d)
+{
+ char addrbuf4[INET_ADDRSTRLEN];
+ char addrbuf6[INET6_ADDRSTRLEN];
+
+ inet_ntop(AF_INET, &d->map4.addr, addrbuf4, sizeof(addrbuf4));
+ inet_ntop(AF_INET6, &d->map6.addr, addrbuf6, sizeof(addrbuf6));
+ slog(LOG_DEBUG, "%s pool address %s (%s)\n", str, addrbuf4, addrbuf6);
+}
+
+struct map6 *assign_dynamic(const struct in6_addr *addr6)
+{
+ struct dynamic_pool *pool;
+ struct list_head *entry;
+ struct free_addr *f;
+ uint32_t i, addr, base, max;
+ struct in_addr addr4;
+ struct map4 *m4;
+ struct map_dynamic *d;
+
+ pool = gcfg->dynamic_pool;
+ if (!pool)
+ return NULL;
+
+ list_for_each(entry, &pool->dormant_list) {
+ d = list_entry(entry, struct map_dynamic, list);
+ if (IN6_ARE_ADDR_EQUAL(addr6, &d->map6.addr)) {
+ print_dyn_change("reactivated dormant", d);
+ goto activate;
+ }
+ }
+
+ base = 0;
+ max = (1 << (32 - pool->map4.prefix_len)) - 1;
+
+ for (i = 0; i < 4; ++i) {
+ base += addr6->s6_addr32[i];
+ while (base & ~max)
+ base = (base & max) +
+ (base >> (32 - pool->map4.prefix_len));
+ }
+
+ for (i = 0, entry = NULL; i <= max; ++i) {
+ addr = pool->free_head.addr | ((base + i) & max);
+ if (!entry || addr == pool->free_head.addr)
+ entry = pool->free_list.next;
+ for (;;) {
+ f = list_entry(entry, struct free_addr, list);
+ if (f->addr + f->count >= addr)
+ break;
+ entry = entry->next;
+ }
+ if (f->addr >= addr)
+ continue;
+ addr4.s_addr = htonl(addr);
+ m4 = find_map4(&addr4);
+ if (m4 == &pool->map4) {
+ d = alloc_map_dynamic(addr6, &addr4, f);
+ if (!d)
+ return NULL;
+ print_dyn_change("assigned new", d);
+ gcfg->map_write_pending = 1;
+ goto activate;
+ }
+ }
+
+ if (list_empty(&pool->dormant_list))
+ return NULL;
+
+ d = list_entry(pool->dormant_list.prev, struct map_dynamic, list);
+ d->map6.addr = *addr6;
+ print_dyn_change("reassigned dormant", d);
+ gcfg->map_write_pending = 1;
+
+activate:
+ move_to_mapped(d, pool);
+ return &d->map6;
+}
+
+static void load_map(struct dynamic_pool *pool, const struct in6_addr *addr6,
+ const struct in_addr *addr4, long int last_use)
+{
+ struct list_head *entry;
+ struct free_addr *f;
+ uint32_t addr;
+ struct map4 *m4;
+ struct map_dynamic *d;
+ char addrbuf4[INET_ADDRSTRLEN];
+ char addrbuf6[INET6_ADDRSTRLEN];
+
+ if (pool->map4.addr.s_addr != (addr4->s_addr &
+ pool->map4.mask.s_addr)) {
+ inet_ntop(AF_INET, addr4, addrbuf4, sizeof(addrbuf4));
+ slog(LOG_NOTICE, "Ignoring map for %s from %s/%s that lies "
+ "outside dynamic pool prefix\n", addrbuf4,
+ gcfg->data_dir, MAP_FILE);
+ return;
+ }
+ m4 = find_map4(addr4);
+ if (m4 != &pool->map4) {
+ inet_ntop(AF_INET, addr4, addrbuf4, sizeof(addrbuf4));
+ slog(LOG_NOTICE, "Ignoring map for %s from %s/%s that "
+ "conflicts with statically-configured map\n",
+ addrbuf4, gcfg->data_dir, MAP_FILE);
+ return;
+ }
+ if (validate_ip6_addr(addr6) < 0) {
+ inet_ntop(AF_INET, addr4, addrbuf4, sizeof(addrbuf4));
+ inet_ntop(AF_INET6, addr6, addrbuf6, sizeof(addrbuf6));
+ slog(LOG_NOTICE, "Ignoring map for %s from %s/%s with "
+ "invalid IPv6 address %s\n", addrbuf4,
+ gcfg->data_dir, MAP_FILE, addrbuf6);
+ return;
+ }
+ if (find_map6(addr6)) {
+ inet_ntop(AF_INET6, addr6, addrbuf6, sizeof(addrbuf6));
+ slog(LOG_NOTICE, "Ignoring map for %s from %s/%s that "
+ "conflicts with statically-configured map\n",
+ addrbuf6, gcfg->data_dir, MAP_FILE);
+ return;
+ }
+ addr = ntohl(addr4->s_addr);
+ list_for_each(entry, &pool->free_list) {
+ f = list_entry(entry, struct free_addr, list);
+ if (f->addr + f->count >= addr)
+ break;
+ }
+ if (entry == &pool->free_list || f->addr >= addr) {
+ inet_ntop(AF_INET, addr4, addrbuf4, sizeof(addrbuf4));
+ slog(LOG_NOTICE, "Ignoring duplicate map for %s from %s/%s\n",
+ addrbuf4, gcfg->data_dir, MAP_FILE);
+ return;
+ }
+ d = alloc_map_dynamic(addr6, addr4, f);
+ if (!d)
+ return;
+ d->last_use = last_use;
+ move_to_dormant(d, pool);
+}
+
+void load_dynamic(struct dynamic_pool *pool)
+{
+ FILE *in;
+ char line[512];
+ char *s4, *s6, *stime, *end, *tokptr;
+ struct in_addr addr4;
+ struct in6_addr addr6;
+ long int last_use;
+ struct list_head *entry;
+ struct map_dynamic *d;
+ int count = 0;
+
+ in = fopen(MAP_FILE, "r");
+ if (!in) {
+ if (errno != ENOENT)
+ slog(LOG_ERR, "Unable to open %s/%s, ignoring: %s\n",
+ gcfg->data_dir, MAP_FILE,
+ strerror(errno));
+ return;
+ }
+ while (fgets(line, sizeof(line), in)) {
+ if (strlen(line) + 1 == sizeof(line)) {
+ slog(LOG_ERR, "Ignoring oversized line in %s/%s\n",
+ gcfg->data_dir, MAP_FILE);
+ continue;
+ }
+ s4 = strtok_r(line, DELIM, &tokptr);
+ if (!s4 || *s4 == '#')
+ continue;
+ s6 = strtok_r(NULL, DELIM, &tokptr);
+ if (!s6)
+ goto malformed;
+ stime = strtok_r(NULL, DELIM, &tokptr);
+ if (!stime)
+ goto malformed;
+ end = strtok_r(NULL, DELIM, &tokptr);
+ if (end)
+ goto malformed;
+ if (!inet_pton(AF_INET, s4, &addr4) ||
+ !inet_pton(AF_INET6, s6, &addr6))
+ goto malformed;
+ last_use = strtol(stime, &end, 10);
+ if (last_use <= 0 || *end)
+ goto malformed;
+ load_map(pool, &addr6, &addr4, last_use);
+ continue;
+malformed:
+ slog(LOG_ERR, "Ignoring malformed line in %s/%s\n",
+ gcfg->data_dir, MAP_FILE);
+ }
+ fclose(in);
+
+ time(&now);
+ last_use = 0;
+ list_for_each(entry, &pool->dormant_list) {
+ d = list_entry(entry, struct map_dynamic, list);
+ if (d->last_use > last_use)
+ last_use = d->last_use;
+ ++count;
+ }
+ slog(LOG_INFO, "Loaded %d dynamic %s from %s/%s\n", count,
+ count == 1 ? "map" : "maps",
+ gcfg->data_dir, MAP_FILE);
+ if (last_use > now) {
+ slog(LOG_DEBUG, "Note: maps in %s/%s are dated in the future\n",
+ gcfg->data_dir, MAP_FILE);
+ list_for_each(entry, &pool->dormant_list) {
+ d = list_entry(entry, struct map_dynamic, list);
+ d->last_use = now - gcfg->dyn_min_lease;
+ }
+ } else {
+ while (!list_empty(&pool->dormant_list)) {
+ d = list_entry(pool->dormant_list.next,
+ struct map_dynamic, list);
+ if (d->last_use + gcfg->dyn_min_lease < now)
+ break;
+ move_to_mapped(d, pool);
+ }
+ }
+}
+
+static void write_to_file(struct dynamic_pool *pool)
+{
+ FILE *out;
+ struct list_head *entry;
+ struct map_dynamic *d;
+ char addrbuf4[INET_ADDRSTRLEN];
+ char addrbuf6[INET6_ADDRSTRLEN];
+
+ out = fopen(TMP_MAP_FILE, "w");
+ if (!out) {
+ slog(LOG_ERR, "Unable to open %s/%s for writing: %s\n",
+ gcfg->data_dir, TMP_MAP_FILE,
+ strerror(errno));
+ return;
+ }
+ fprintf(out, "###\n###\n### TAYGA dynamic map database\n###\n"
+ "### You can edit this (carefully!) as long as "
+ "you shut down TAYGA first\n###\n###\n"
+ "### Last written: %s###\n###\n\n",
+ asctime(gmtime(&now)));
+ entry = pool->mapped_list.next;
+ while (entry != &pool->dormant_list) {
+ if (entry == &pool->mapped_list) {
+ entry = pool->dormant_list.next;
+ continue;
+ }
+ d = list_entry(entry, struct map_dynamic, list);
+ inet_ntop(AF_INET, &d->map4.addr, addrbuf4, sizeof(addrbuf4));
+ inet_ntop(AF_INET6, &d->map6.addr, addrbuf6, sizeof(addrbuf6));
+ fprintf(out, "%s\t%s\t%ld\n", addrbuf4, addrbuf6,
+ d->cache_entry ?
+ d->cache_entry->last_use : d->last_use);
+ entry = entry->next;
+ }
+ fclose(out);
+ if (rename(TMP_MAP_FILE, MAP_FILE) < 0) {
+ slog(LOG_ERR, "Unable to rename %s/%s to %s/%s: %s\n",
+ gcfg->data_dir, TMP_MAP_FILE,
+ gcfg->data_dir, MAP_FILE,
+ strerror(errno));
+ unlink(TMP_MAP_FILE);
+ }
+}
+
+void dynamic_maint(struct dynamic_pool *pool, int shutdown)
+{
+ struct list_head *entry, *next;
+ struct map_dynamic *d;
+ struct free_addr *f;
+
+ list_for_each_safe(entry, next, &pool->mapped_list) {
+ d = list_entry(entry, struct map_dynamic, list);
+ if (d->cache_entry)
+ continue;
+ if (d->last_use + gcfg->dyn_min_lease < now) {
+ print_dyn_change("unmapped dormant", d);
+ move_to_dormant(d, pool);
+ }
+ }
+ while (!list_empty(&pool->dormant_list)) {
+ d = list_entry(pool->dormant_list.prev,
+ struct map_dynamic, list);
+ if (d->last_use + gcfg->dyn_max_lease >= now)
+ break;
+ f = list_entry(d->free.list.prev, struct free_addr, list);
+ f->count += d->free.count + 1;
+ list_del(&d->free.list);
+ list_del(&d->list);
+ free(d);
+ }
+ if (gcfg->data_dir[0]) {
+ if (shutdown || gcfg->map_write_pending ||
+ gcfg->last_map_write +
+ gcfg->max_commit_delay < now ||
+ gcfg->last_map_write > now) {
+ write_to_file(pool);
+ gcfg->last_map_write = now;
+ gcfg->map_write_pending = 0;
+ }
+ }
+}
--- /dev/null
+#!/bin/sh
+# install - install a program, script, or datafile
+
+scriptversion=2009-04-28.21; # UTC
+
+# This originates from X11R5 (mit/util/scripts/install.sh), which was
+# later released in X11R6 (xc/config/util/install.sh) with the
+# following copyright and license.
+#
+# Copyright (C) 1994 X Consortium
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
+# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+# Except as contained in this notice, the name of the X Consortium shall not
+# be used in advertising or otherwise to promote the sale, use or other deal-
+# ings in this Software without prior written authorization from the X Consor-
+# tium.
+#
+#
+# FSF changes to this file are in the public domain.
+#
+# Calling this script install-sh is preferred over install.sh, to prevent
+# `make' implicit rules from creating a file called install from it
+# when there is no Makefile.
+#
+# This script is compatible with the BSD install script, but was written
+# from scratch.
+
+nl='
+'
+IFS=" "" $nl"
+
+# set DOITPROG to echo to test this script
+
+# Don't use :- since 4.3BSD and earlier shells don't like it.
+doit=${DOITPROG-}
+if test -z "$doit"; then
+ doit_exec=exec
+else
+ doit_exec=$doit
+fi
+
+# Put in absolute file names if you don't have them in your path;
+# or use environment vars.
+
+chgrpprog=${CHGRPPROG-chgrp}
+chmodprog=${CHMODPROG-chmod}
+chownprog=${CHOWNPROG-chown}
+cmpprog=${CMPPROG-cmp}
+cpprog=${CPPROG-cp}
+mkdirprog=${MKDIRPROG-mkdir}
+mvprog=${MVPROG-mv}
+rmprog=${RMPROG-rm}
+stripprog=${STRIPPROG-strip}
+
+posix_glob='?'
+initialize_posix_glob='
+ test "$posix_glob" != "?" || {
+ if (set -f) 2>/dev/null; then
+ posix_glob=
+ else
+ posix_glob=:
+ fi
+ }
+'
+
+posix_mkdir=
+
+# Desired mode of installed file.
+mode=0755
+
+chgrpcmd=
+chmodcmd=$chmodprog
+chowncmd=
+mvcmd=$mvprog
+rmcmd="$rmprog -f"
+stripcmd=
+
+src=
+dst=
+dir_arg=
+dst_arg=
+
+copy_on_change=false
+no_target_directory=
+
+usage="\
+Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
+ or: $0 [OPTION]... SRCFILES... DIRECTORY
+ or: $0 [OPTION]... -t DIRECTORY SRCFILES...
+ or: $0 [OPTION]... -d DIRECTORIES...
+
+In the 1st form, copy SRCFILE to DSTFILE.
+In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
+In the 4th, create DIRECTORIES.
+
+Options:
+ --help display this help and exit.
+ --version display version info and exit.
+
+ -c (ignored)
+ -C install only if different (preserve the last data modification time)
+ -d create directories instead of installing files.
+ -g GROUP $chgrpprog installed files to GROUP.
+ -m MODE $chmodprog installed files to MODE.
+ -o USER $chownprog installed files to USER.
+ -s $stripprog installed files.
+ -t DIRECTORY install into DIRECTORY.
+ -T report an error if DSTFILE is a directory.
+
+Environment variables override the default commands:
+ CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
+ RMPROG STRIPPROG
+"
+
+while test $# -ne 0; do
+ case $1 in
+ -c) ;;
+
+ -C) copy_on_change=true;;
+
+ -d) dir_arg=true;;
+
+ -g) chgrpcmd="$chgrpprog $2"
+ shift;;
+
+ --help) echo "$usage"; exit $?;;
+
+ -m) mode=$2
+ case $mode in
+ *' '* | *' '* | *'
+'* | *'*'* | *'?'* | *'['*)
+ echo "$0: invalid mode: $mode" >&2
+ exit 1;;
+ esac
+ shift;;
+
+ -o) chowncmd="$chownprog $2"
+ shift;;
+
+ -s) stripcmd=$stripprog;;
+
+ -t) dst_arg=$2
+ shift;;
+
+ -T) no_target_directory=true;;
+
+ --version) echo "$0 $scriptversion"; exit $?;;
+
+ --) shift
+ break;;
+
+ -*) echo "$0: invalid option: $1" >&2
+ exit 1;;
+
+ *) break;;
+ esac
+ shift
+done
+
+if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
+ # When -d is used, all remaining arguments are directories to create.
+ # When -t is used, the destination is already specified.
+ # Otherwise, the last argument is the destination. Remove it from $@.
+ for arg
+ do
+ if test -n "$dst_arg"; then
+ # $@ is not empty: it contains at least $arg.
+ set fnord "$@" "$dst_arg"
+ shift # fnord
+ fi
+ shift # arg
+ dst_arg=$arg
+ done
+fi
+
+if test $# -eq 0; then
+ if test -z "$dir_arg"; then
+ echo "$0: no input file specified." >&2
+ exit 1
+ fi
+ # It's OK to call `install-sh -d' without argument.
+ # This can happen when creating conditional directories.
+ exit 0
+fi
+
+if test -z "$dir_arg"; then
+ trap '(exit $?); exit' 1 2 13 15
+
+ # Set umask so as not to create temps with too-generous modes.
+ # However, 'strip' requires both read and write access to temps.
+ case $mode in
+ # Optimize common cases.
+ *644) cp_umask=133;;
+ *755) cp_umask=22;;
+
+ *[0-7])
+ if test -z "$stripcmd"; then
+ u_plus_rw=
+ else
+ u_plus_rw='% 200'
+ fi
+ cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
+ *)
+ if test -z "$stripcmd"; then
+ u_plus_rw=
+ else
+ u_plus_rw=,u+rw
+ fi
+ cp_umask=$mode$u_plus_rw;;
+ esac
+fi
+
+for src
+do
+ # Protect names starting with `-'.
+ case $src in
+ -*) src=./$src;;
+ esac
+
+ if test -n "$dir_arg"; then
+ dst=$src
+ dstdir=$dst
+ test -d "$dstdir"
+ dstdir_status=$?
+ else
+
+ # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
+ # might cause directories to be created, which would be especially bad
+ # if $src (and thus $dsttmp) contains '*'.
+ if test ! -f "$src" && test ! -d "$src"; then
+ echo "$0: $src does not exist." >&2
+ exit 1
+ fi
+
+ if test -z "$dst_arg"; then
+ echo "$0: no destination specified." >&2
+ exit 1
+ fi
+
+ dst=$dst_arg
+ # Protect names starting with `-'.
+ case $dst in
+ -*) dst=./$dst;;
+ esac
+
+ # If destination is a directory, append the input filename; won't work
+ # if double slashes aren't ignored.
+ if test -d "$dst"; then
+ if test -n "$no_target_directory"; then
+ echo "$0: $dst_arg: Is a directory" >&2
+ exit 1
+ fi
+ dstdir=$dst
+ dst=$dstdir/`basename "$src"`
+ dstdir_status=0
+ else
+ # Prefer dirname, but fall back on a substitute if dirname fails.
+ dstdir=`
+ (dirname "$dst") 2>/dev/null ||
+ expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$dst" : 'X\(//\)[^/]' \| \
+ X"$dst" : 'X\(//\)$' \| \
+ X"$dst" : 'X\(/\)' \| . 2>/dev/null ||
+ echo X"$dst" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'
+ `
+
+ test -d "$dstdir"
+ dstdir_status=$?
+ fi
+ fi
+
+ obsolete_mkdir_used=false
+
+ if test $dstdir_status != 0; then
+ case $posix_mkdir in
+ '')
+ # Create intermediate dirs using mode 755 as modified by the umask.
+ # This is like FreeBSD 'install' as of 1997-10-28.
+ umask=`umask`
+ case $stripcmd.$umask in
+ # Optimize common cases.
+ *[2367][2367]) mkdir_umask=$umask;;
+ .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
+
+ *[0-7])
+ mkdir_umask=`expr $umask + 22 \
+ - $umask % 100 % 40 + $umask % 20 \
+ - $umask % 10 % 4 + $umask % 2
+ `;;
+ *) mkdir_umask=$umask,go-w;;
+ esac
+
+ # With -d, create the new directory with the user-specified mode.
+ # Otherwise, rely on $mkdir_umask.
+ if test -n "$dir_arg"; then
+ mkdir_mode=-m$mode
+ else
+ mkdir_mode=
+ fi
+
+ posix_mkdir=false
+ case $umask in
+ *[123567][0-7][0-7])
+ # POSIX mkdir -p sets u+wx bits regardless of umask, which
+ # is incompatible with FreeBSD 'install' when (umask & 300) != 0.
+ ;;
+ *)
+ tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
+ trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0
+
+ if (umask $mkdir_umask &&
+ exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
+ then
+ if test -z "$dir_arg" || {
+ # Check for POSIX incompatibilities with -m.
+ # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
+ # other-writeable bit of parent directory when it shouldn't.
+ # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
+ ls_ld_tmpdir=`ls -ld "$tmpdir"`
+ case $ls_ld_tmpdir in
+ d????-?r-*) different_mode=700;;
+ d????-?--*) different_mode=755;;
+ *) false;;
+ esac &&
+ $mkdirprog -m$different_mode -p -- "$tmpdir" && {
+ ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
+ test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
+ }
+ }
+ then posix_mkdir=:
+ fi
+ rmdir "$tmpdir/d" "$tmpdir"
+ else
+ # Remove any dirs left behind by ancient mkdir implementations.
+ rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
+ fi
+ trap '' 0;;
+ esac;;
+ esac
+
+ if
+ $posix_mkdir && (
+ umask $mkdir_umask &&
+ $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
+ )
+ then :
+ else
+
+ # The umask is ridiculous, or mkdir does not conform to POSIX,
+ # or it failed possibly due to a race condition. Create the
+ # directory the slow way, step by step, checking for races as we go.
+
+ case $dstdir in
+ /*) prefix='/';;
+ -*) prefix='./';;
+ *) prefix='';;
+ esac
+
+ eval "$initialize_posix_glob"
+
+ oIFS=$IFS
+ IFS=/
+ $posix_glob set -f
+ set fnord $dstdir
+ shift
+ $posix_glob set +f
+ IFS=$oIFS
+
+ prefixes=
+
+ for d
+ do
+ test -z "$d" && continue
+
+ prefix=$prefix$d
+ if test -d "$prefix"; then
+ prefixes=
+ else
+ if $posix_mkdir; then
+ (umask=$mkdir_umask &&
+ $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
+ # Don't fail if two instances are running concurrently.
+ test -d "$prefix" || exit 1
+ else
+ case $prefix in
+ *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
+ *) qprefix=$prefix;;
+ esac
+ prefixes="$prefixes '$qprefix'"
+ fi
+ fi
+ prefix=$prefix/
+ done
+
+ if test -n "$prefixes"; then
+ # Don't fail if two instances are running concurrently.
+ (umask $mkdir_umask &&
+ eval "\$doit_exec \$mkdirprog $prefixes") ||
+ test -d "$dstdir" || exit 1
+ obsolete_mkdir_used=true
+ fi
+ fi
+ fi
+
+ if test -n "$dir_arg"; then
+ { test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
+ { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
+ { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
+ test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
+ else
+
+ # Make a couple of temp file names in the proper directory.
+ dsttmp=$dstdir/_inst.$$_
+ rmtmp=$dstdir/_rm.$$_
+
+ # Trap to clean up those temp files at exit.
+ trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
+
+ # Copy the file name to the temp name.
+ (umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&
+
+ # and set any options; do chmod last to preserve setuid bits.
+ #
+ # If any of these fail, we abort the whole thing. If we want to
+ # ignore errors from any of these, just make sure not to ignore
+ # errors from the above "$doit $cpprog $src $dsttmp" command.
+ #
+ { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
+ { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
+ { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
+ { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
+
+ # If -C, don't bother to copy if it wouldn't change the file.
+ if $copy_on_change &&
+ old=`LC_ALL=C ls -dlL "$dst" 2>/dev/null` &&
+ new=`LC_ALL=C ls -dlL "$dsttmp" 2>/dev/null` &&
+
+ eval "$initialize_posix_glob" &&
+ $posix_glob set -f &&
+ set X $old && old=:$2:$4:$5:$6 &&
+ set X $new && new=:$2:$4:$5:$6 &&
+ $posix_glob set +f &&
+
+ test "$old" = "$new" &&
+ $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
+ then
+ rm -f "$dsttmp"
+ else
+ # Rename the file to the real destination.
+ $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
+
+ # The rename failed, perhaps because mv can't rename something else
+ # to itself, or perhaps because mv is so ancient that it does not
+ # support -f.
+ {
+ # Now remove or move aside any old file at destination location.
+ # We try this two ways since rm can't unlink itself on some
+ # systems and the destination file might be busy for other
+ # reasons. In this case, the final cleanup might fail but the new
+ # file should still install successfully.
+ {
+ test ! -f "$dst" ||
+ $doit $rmcmd -f "$dst" 2>/dev/null ||
+ { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
+ { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
+ } ||
+ { echo "$0: cannot unlink or rename $dst" >&2
+ (exit 1); exit 1
+ }
+ } &&
+
+ # Now rename the file to the real destination.
+ $doit $mvcmd "$dsttmp" "$dst"
+ }
+ fi || exit 1
+
+ trap '' 0
+ fi
+done
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:
--- /dev/null
+/* Linux-style linked list implementation */
+
+#ifndef __LIST_H__
+#define __LIST_H__
+
+#include <stddef.h> /* for offsetof() macro */
+
+struct list_head {
+ struct list_head *next;
+ struct list_head *prev;
+};
+
+/* Declare an empty list */
+#define LIST_HEAD(x) struct list_head x = { &x, &x }
+
+/* Initialize an empty list (required for all malloc'd list_heads) */
+static inline void INIT_LIST_HEAD(struct list_head *x)
+{
+ x->next = x;
+ x->prev = x;
+}
+
+/* Remove an entry from its current list (if any) and insert it into the
+ * beginning of the given list */
+static inline void list_add(struct list_head *x, struct list_head *head)
+{
+ x->next->prev = x->prev;
+ x->prev->next = x->next;
+ x->next = head->next;
+ x->prev = head;
+ head->next = x;
+ x->next->prev = x;
+}
+
+/* Remove an entry from its current list (if any) and insert it into the
+ * end of the given list */
+static inline void list_add_tail(struct list_head *x, struct list_head *head)
+{
+ x->next->prev = x->prev;
+ x->prev->next = x->next;
+ x->prev = head->prev;
+ x->next = head;
+ head->prev = x;
+ x->prev->next = x;
+}
+
+/* Remove an entry from its current list and reinitialize it */
+static inline void list_del(struct list_head *x)
+{
+ x->next->prev = x->prev;
+ x->prev->next = x->next;
+ x->next = x;
+ x->prev = x;
+}
+
+#define list_del_init list_del
+#define list_move list_add
+#define list_move_tail list_add_tail
+
+/* Test if list is empty (contains no other entries) */
+static inline int list_empty(const struct list_head *x)
+{
+ return x->next == x;
+}
+
+/* Get a pointer to the object containing x, which is of type "type" and
+ * embeds x as a field called "field" */
+#define list_entry(x, type, field) ({ \
+ const typeof( ((type *)0)->field ) *__mptr = (x); \
+ (type *)( (char *)__mptr - offsetof(type, field) );})
+
+/* Iterate over all items in the list */
+#define list_for_each(x, head) \
+ for (x = (head)->next; x != (head); x = x->next)
+
+/* Iterate over all items in the list, possibly deleting some */
+#define list_for_each_safe(x, n, head) \
+ for (x = (head)->next, n = x->next; x != (head); x = n, n = x->next)
+
+#endif /* __LIST_H__ */
--- /dev/null
+#! /bin/sh
+# Common stub for a few missing GNU programs while installing.
+
+scriptversion=2009-04-28.21; # UTC
+
+# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006,
+# 2008, 2009 Free Software Foundation, Inc.
+# Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+if test $# -eq 0; then
+ echo 1>&2 "Try \`$0 --help' for more information"
+ exit 1
+fi
+
+run=:
+sed_output='s/.* --output[ =]\([^ ]*\).*/\1/p'
+sed_minuso='s/.* -o \([^ ]*\).*/\1/p'
+
+# In the cases where this matters, `missing' is being run in the
+# srcdir already.
+if test -f configure.ac; then
+ configure_ac=configure.ac
+else
+ configure_ac=configure.in
+fi
+
+msg="missing on your system"
+
+case $1 in
+--run)
+ # Try to run requested program, and just exit if it succeeds.
+ run=
+ shift
+ "$@" && exit 0
+ # Exit code 63 means version mismatch. This often happens
+ # when the user try to use an ancient version of a tool on
+ # a file that requires a minimum version. In this case we
+ # we should proceed has if the program had been absent, or
+ # if --run hadn't been passed.
+ if test $? = 63; then
+ run=:
+ msg="probably too old"
+ fi
+ ;;
+
+ -h|--h|--he|--hel|--help)
+ echo "\
+$0 [OPTION]... PROGRAM [ARGUMENT]...
+
+Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
+error status if there is no known handling for PROGRAM.
+
+Options:
+ -h, --help display this help and exit
+ -v, --version output version information and exit
+ --run try to run the given command, and emulate it if it fails
+
+Supported PROGRAM values:
+ aclocal touch file \`aclocal.m4'
+ autoconf touch file \`configure'
+ autoheader touch file \`config.h.in'
+ autom4te touch the output file, or create a stub one
+ automake touch all \`Makefile.in' files
+ bison create \`y.tab.[ch]', if possible, from existing .[ch]
+ flex create \`lex.yy.c', if possible, from existing .c
+ help2man touch the output file
+ lex create \`lex.yy.c', if possible, from existing .c
+ makeinfo touch the output file
+ tar try tar, gnutar, gtar, then tar without non-portable flags
+ yacc create \`y.tab.[ch]', if possible, from existing .[ch]
+
+Version suffixes to PROGRAM as well as the prefixes \`gnu-', \`gnu', and
+\`g' are ignored when checking the name.
+
+Send bug reports to <bug-automake@gnu.org>."
+ exit $?
+ ;;
+
+ -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
+ echo "missing $scriptversion (GNU Automake)"
+ exit $?
+ ;;
+
+ -*)
+ echo 1>&2 "$0: Unknown \`$1' option"
+ echo 1>&2 "Try \`$0 --help' for more information"
+ exit 1
+ ;;
+
+esac
+
+# normalize program name to check for.
+program=`echo "$1" | sed '
+ s/^gnu-//; t
+ s/^gnu//; t
+ s/^g//; t'`
+
+# Now exit if we have it, but it failed. Also exit now if we
+# don't have it and --version was passed (most likely to detect
+# the program). This is about non-GNU programs, so use $1 not
+# $program.
+case $1 in
+ lex*|yacc*)
+ # Not GNU programs, they don't have --version.
+ ;;
+
+ tar*)
+ if test -n "$run"; then
+ echo 1>&2 "ERROR: \`tar' requires --run"
+ exit 1
+ elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
+ exit 1
+ fi
+ ;;
+
+ *)
+ if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
+ # We have it, but it failed.
+ exit 1
+ elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
+ # Could not run --version or --help. This is probably someone
+ # running `$TOOL --version' or `$TOOL --help' to check whether
+ # $TOOL exists and not knowing $TOOL uses missing.
+ exit 1
+ fi
+ ;;
+esac
+
+# If it does not exist, or fails to run (possibly an outdated version),
+# try to emulate it.
+case $program in
+ aclocal*)
+ echo 1>&2 "\
+WARNING: \`$1' is $msg. You should only need it if
+ you modified \`acinclude.m4' or \`${configure_ac}'. You might want
+ to install the \`Automake' and \`Perl' packages. Grab them from
+ any GNU archive site."
+ touch aclocal.m4
+ ;;
+
+ autoconf*)
+ echo 1>&2 "\
+WARNING: \`$1' is $msg. You should only need it if
+ you modified \`${configure_ac}'. You might want to install the
+ \`Autoconf' and \`GNU m4' packages. Grab them from any GNU
+ archive site."
+ touch configure
+ ;;
+
+ autoheader*)
+ echo 1>&2 "\
+WARNING: \`$1' is $msg. You should only need it if
+ you modified \`acconfig.h' or \`${configure_ac}'. You might want
+ to install the \`Autoconf' and \`GNU m4' packages. Grab them
+ from any GNU archive site."
+ files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' ${configure_ac}`
+ test -z "$files" && files="config.h"
+ touch_files=
+ for f in $files; do
+ case $f in
+ *:*) touch_files="$touch_files "`echo "$f" |
+ sed -e 's/^[^:]*://' -e 's/:.*//'`;;
+ *) touch_files="$touch_files $f.in";;
+ esac
+ done
+ touch $touch_files
+ ;;
+
+ automake*)
+ echo 1>&2 "\
+WARNING: \`$1' is $msg. You should only need it if
+ you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
+ You might want to install the \`Automake' and \`Perl' packages.
+ Grab them from any GNU archive site."
+ find . -type f -name Makefile.am -print |
+ sed 's/\.am$/.in/' |
+ while read f; do touch "$f"; done
+ ;;
+
+ autom4te*)
+ echo 1>&2 "\
+WARNING: \`$1' is needed, but is $msg.
+ You might have modified some files without having the
+ proper tools for further handling them.
+ You can get \`$1' as part of \`Autoconf' from any GNU
+ archive site."
+
+ file=`echo "$*" | sed -n "$sed_output"`
+ test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
+ if test -f "$file"; then
+ touch $file
+ else
+ test -z "$file" || exec >$file
+ echo "#! /bin/sh"
+ echo "# Created by GNU Automake missing as a replacement of"
+ echo "# $ $@"
+ echo "exit 0"
+ chmod +x $file
+ exit 1
+ fi
+ ;;
+
+ bison*|yacc*)
+ echo 1>&2 "\
+WARNING: \`$1' $msg. You should only need it if
+ you modified a \`.y' file. You may need the \`Bison' package
+ in order for those modifications to take effect. You can get
+ \`Bison' from any GNU archive site."
+ rm -f y.tab.c y.tab.h
+ if test $# -ne 1; then
+ eval LASTARG="\${$#}"
+ case $LASTARG in
+ *.y)
+ SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
+ if test -f "$SRCFILE"; then
+ cp "$SRCFILE" y.tab.c
+ fi
+ SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
+ if test -f "$SRCFILE"; then
+ cp "$SRCFILE" y.tab.h
+ fi
+ ;;
+ esac
+ fi
+ if test ! -f y.tab.h; then
+ echo >y.tab.h
+ fi
+ if test ! -f y.tab.c; then
+ echo 'main() { return 0; }' >y.tab.c
+ fi
+ ;;
+
+ lex*|flex*)
+ echo 1>&2 "\
+WARNING: \`$1' is $msg. You should only need it if
+ you modified a \`.l' file. You may need the \`Flex' package
+ in order for those modifications to take effect. You can get
+ \`Flex' from any GNU archive site."
+ rm -f lex.yy.c
+ if test $# -ne 1; then
+ eval LASTARG="\${$#}"
+ case $LASTARG in
+ *.l)
+ SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
+ if test -f "$SRCFILE"; then
+ cp "$SRCFILE" lex.yy.c
+ fi
+ ;;
+ esac
+ fi
+ if test ! -f lex.yy.c; then
+ echo 'main() { return 0; }' >lex.yy.c
+ fi
+ ;;
+
+ help2man*)
+ echo 1>&2 "\
+WARNING: \`$1' is $msg. You should only need it if
+ you modified a dependency of a manual page. You may need the
+ \`Help2man' package in order for those modifications to take
+ effect. You can get \`Help2man' from any GNU archive site."
+
+ file=`echo "$*" | sed -n "$sed_output"`
+ test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
+ if test -f "$file"; then
+ touch $file
+ else
+ test -z "$file" || exec >$file
+ echo ".ab help2man is required to generate this page"
+ exit $?
+ fi
+ ;;
+
+ makeinfo*)
+ echo 1>&2 "\
+WARNING: \`$1' is $msg. You should only need it if
+ you modified a \`.texi' or \`.texinfo' file, or any other file
+ indirectly affecting the aspect of the manual. The spurious
+ call might also be the consequence of using a buggy \`make' (AIX,
+ DU, IRIX). You might want to install the \`Texinfo' package or
+ the \`GNU make' package. Grab either from any GNU archive site."
+ # The file to touch is that specified with -o ...
+ file=`echo "$*" | sed -n "$sed_output"`
+ test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
+ if test -z "$file"; then
+ # ... or it is the one specified with @setfilename ...
+ infile=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
+ file=`sed -n '
+ /^@setfilename/{
+ s/.* \([^ ]*\) *$/\1/
+ p
+ q
+ }' $infile`
+ # ... or it is derived from the source name (dir/f.texi becomes f.info)
+ test -z "$file" && file=`echo "$infile" | sed 's,.*/,,;s,.[^.]*$,,'`.info
+ fi
+ # If the file does not exist, the user really needs makeinfo;
+ # let's fail without touching anything.
+ test -f $file || exit 1
+ touch $file
+ ;;
+
+ tar*)
+ shift
+
+ # We have already tried tar in the generic part.
+ # Look for gnutar/gtar before invocation to avoid ugly error
+ # messages.
+ if (gnutar --version > /dev/null 2>&1); then
+ gnutar "$@" && exit 0
+ fi
+ if (gtar --version > /dev/null 2>&1); then
+ gtar "$@" && exit 0
+ fi
+ firstarg="$1"
+ if shift; then
+ case $firstarg in
+ *o*)
+ firstarg=`echo "$firstarg" | sed s/o//`
+ tar "$firstarg" "$@" && exit 0
+ ;;
+ esac
+ case $firstarg in
+ *h*)
+ firstarg=`echo "$firstarg" | sed s/h//`
+ tar "$firstarg" "$@" && exit 0
+ ;;
+ esac
+ fi
+
+ echo 1>&2 "\
+WARNING: I can't seem to be able to run \`tar' with the given arguments.
+ You may want to install GNU tar or Free paxutils, or check the
+ command line arguments."
+ exit 1
+ ;;
+
+ *)
+ echo 1>&2 "\
+WARNING: \`$1' is needed, and is $msg.
+ You might have modified some files without having the
+ proper tools for further handling them. Check the \`README' file,
+ it often tells you about the needed prerequisites for installing
+ this package. You may also peek at any GNU archive site, in case
+ some other package would contain this missing \`$1' program."
+ exit 1
+ ;;
+esac
+
+exit 0
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:
--- /dev/null
+/*
+ * nat64.c -- IPv4/IPv6 header rewriting routines
+ *
+ * part of TAYGA <http://www.litech.org/tayga/>
+ * Copyright (C) 2010 Nathan Lutchansky <lutchann@litech.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <tayga.h>
+
+extern struct config *gcfg;
+
+static uint16_t ip_checksum(void *d, int c)
+{
+ uint32_t sum = 0xffff;
+ uint16_t *p = d;
+
+ while (c > 1) {
+ sum += *p++;
+ c -= 2;
+ }
+
+ if (c)
+ sum += htons(*((uint8_t *)p) << 8);
+
+ while (sum > 0xffff)
+ sum = (sum & 0xffff) + (sum >> 16);
+
+ return ~sum;
+}
+
+static uint16_t ones_add(uint16_t a, uint16_t b)
+{
+ uint32_t sum = (uint16_t)~a + (uint16_t)~b;
+
+ return ~((sum & 0xffff) + (sum >> 16));
+}
+
+static uint16_t ip6_checksum(struct ip6 *ip6, uint32_t data_len, uint8_t proto)
+{
+ uint32_t sum = 0;
+ uint16_t *p;
+ int i;
+
+ for (i = 0, p = ip6->src.s6_addr16; i < 16; ++i)
+ sum += *p++;
+ sum += htonl(data_len) >> 16;
+ sum += htonl(data_len) & 0xffff;
+ sum += htons(proto);
+
+ while (sum > 0xffff)
+ sum = (sum & 0xffff) + (sum >> 16);
+
+ return ~sum;
+}
+
+static uint16_t convert_cksum(struct ip6 *ip6, struct ip4 *ip4)
+{
+ uint32_t sum = 0;
+ uint16_t *p;
+ int i;
+
+ sum += ~ip4->src.s_addr >> 16;
+ sum += ~ip4->src.s_addr & 0xffff;
+ sum += ~ip4->dest.s_addr >> 16;
+ sum += ~ip4->dest.s_addr & 0xffff;
+
+ for (i = 0, p = ip6->src.s6_addr16; i < 16; ++i)
+ sum += *p++;
+
+ while (sum > 0xffff)
+ sum = (sum & 0xffff) + (sum >> 16);
+
+ return sum;
+}
+
+static void host_send_icmp4(uint8_t tos, struct in_addr *src,
+ struct in_addr *dest, struct icmp *icmp,
+ uint8_t *data, int data_len)
+{
+ struct {
+ struct tun_pi pi;
+ struct ip4 ip4;
+ struct icmp icmp;
+ } __attribute__ ((__packed__)) header;
+ struct iovec iov[2];
+
+ header.pi.flags = 0;
+ header.pi.proto = htons(ETH_P_IP);
+ header.ip4.ver_ihl = 0x45;
+ header.ip4.tos = tos;
+ header.ip4.length = htons(sizeof(header.ip4) + sizeof(header.icmp) +
+ data_len);
+ header.ip4.ident = 0;
+ header.ip4.flags_offset = 0;
+ header.ip4.ttl = 64;
+ header.ip4.proto = 1;
+ header.ip4.cksum = 0;
+ header.ip4.src = *src;
+ header.ip4.dest = *dest;
+ header.ip4.cksum = ip_checksum(&header.ip4, sizeof(header.ip4));
+ header.icmp = *icmp;
+ header.icmp.cksum = 0;
+ header.icmp.cksum = ones_add(ip_checksum(data, data_len),
+ ip_checksum(&header.icmp, sizeof(header.icmp)));
+ iov[0].iov_base = &header;
+ iov[0].iov_len = sizeof(header);
+ iov[1].iov_base = data;
+ iov[1].iov_len = data_len;
+ if (writev(gcfg->tun_fd, iov, data_len ? 2 : 1) < 0)
+ slog(LOG_WARNING, "error writing packet to tun device: %s\n",
+ strerror(errno));
+}
+
+static void host_send_icmp4_error(uint8_t type, uint8_t code, uint32_t word,
+ struct pkt *orig)
+{
+ struct icmp icmp;
+ int orig_len;
+
+ /* Don't send ICMP errors in response to ICMP messages other than
+ echo request */
+ if (orig->data_proto == 1 && orig->icmp->type != 8)
+ return;
+
+ orig_len = orig->header_len + orig->data_len;
+ if (orig_len > 576 - sizeof(struct ip4) - sizeof(struct icmp))
+ orig_len = 576 - sizeof(struct ip4) - sizeof(struct icmp);
+ icmp.type = type;
+ icmp.code = code;
+ icmp.word = htonl(word);
+ host_send_icmp4(0, &gcfg->local_addr4, &orig->ip4->src, &icmp,
+ (uint8_t *)orig->ip4, orig_len);
+}
+
+static void host_handle_icmp4(struct pkt *p)
+{
+ p->data += sizeof(struct icmp);
+ p->data_len -= sizeof(struct icmp);
+
+ switch (p->icmp->type) {
+ case 8:
+ p->icmp->type = 0;
+ host_send_icmp4(p->ip4->tos, &p->ip4->dest, &p->ip4->src,
+ p->icmp, p->data, p->data_len);
+ break;
+ }
+}
+
+static void xlate_header_4to6(struct pkt *p, struct ip6 *ip6,
+ int payload_length)
+{
+ ip6->ver_tc_fl = htonl((0x6 << 28) | (p->ip4->tos << 20));
+ ip6->payload_length = htons(payload_length);
+ ip6->next_header = p->data_proto == 1 ? 58 : p->data_proto;
+ ip6->hop_limit = p->ip4->ttl;
+}
+
+static int xlate_payload_4to6(struct pkt *p, struct ip6 *ip6)
+{
+ uint16_t *tck;
+ uint16_t cksum;
+
+ if (p->ip4->flags_offset & htons(IP4_F_MASK))
+ return 0;
+
+ switch (p->data_proto) {
+ case 1:
+ cksum = ip6_checksum(ip6, htons(p->ip4->length) -
+ p->header_len, 58);
+ cksum = ones_add(p->icmp->cksum, cksum);
+ if (p->icmp->type == 8) {
+ p->icmp->type = 128;
+ p->icmp->cksum = ones_add(cksum, ~(128 - 8));
+ } else {
+ p->icmp->type = 129;
+ p->icmp->cksum = ones_add(cksum, ~(129 - 0));
+ }
+ return 0;
+ case 17:
+ if (p->data_len < 8)
+ return -1;
+ tck = (uint16_t *)(p->data + 6);
+ if (!*tck)
+ return -1; /* drop UDP packets with no checksum */
+ break;
+ case 6:
+ if (p->data_len < 20)
+ return -1;
+ tck = (uint16_t *)(p->data + 16);
+ break;
+ default:
+ return 0;
+ }
+ *tck = ones_add(*tck, ~convert_cksum(ip6, p->ip4));
+ return 0;
+}
+
+static void xlate_4to6_data(struct pkt *p)
+{
+ struct {
+ struct tun_pi pi;
+ struct ip6 ip6;
+ struct ip6_frag ip6_frag;
+ } __attribute__ ((__packed__)) header;
+ struct cache_entry *src = NULL, *dest = NULL;
+ struct iovec iov[2];
+ int no_frag_hdr = 0;
+ uint16_t off = ntohs(p->ip4->flags_offset);
+ int frag_size;
+
+ frag_size = gcfg->ipv6_offlink_mtu;
+ if (frag_size > gcfg->mtu)
+ frag_size = gcfg->mtu;
+ frag_size -= sizeof(struct ip6);
+
+ if (map_ip4_to_ip6(&header.ip6.dest, &p->ip4->dest, &dest)) {
+ host_send_icmp4_error(3, 1, 0, p);
+ return;
+ }
+
+ if (map_ip4_to_ip6(&header.ip6.src, &p->ip4->src, &src)) {
+ host_send_icmp4_error(3, 10, 0, p);
+ return;
+ }
+
+ /* We do not respect the DF flag for IP4 packets that are already
+ fragmented, because the IP6 fragmentation header takes an extra
+ eight bytes, which we don't have space for because the IP4 source
+ thinks the MTU is only 20 bytes smaller than the actual MTU on
+ the IP6 side. (E.g. if the IP6 MTU is 1496, the IP4 source thinks
+ the path MTU is 1476, which means it sends fragments with 1456
+ bytes of fragmented payload. Translating this to IP6 requires
+ 40 bytes of IP6 header + 8 bytes of fragmentation header +
+ 1456 bytes of payload == 1504 bytes.) */
+ if ((off & (IP4_F_MASK | IP4_F_MF)) == 0) {
+ if (off & IP4_F_DF) {
+ if (gcfg->mtu - MTU_ADJ < p->header_len + p->data_len) {
+ host_send_icmp4_error(3, 4,
+ gcfg->mtu - MTU_ADJ, p);
+ return;
+ }
+ no_frag_hdr = 1;
+ } else if (gcfg->lazy_frag_hdr && p->data_len <= frag_size) {
+ no_frag_hdr = 1;
+ }
+ }
+
+ xlate_header_4to6(p, &header.ip6, p->data_len);
+ --header.ip6.hop_limit;
+
+ if (xlate_payload_4to6(p, &header.ip6) < 0)
+ return;
+
+ if (src)
+ src->flags |= CACHE_F_SEEN_4TO6;
+ if (dest)
+ dest->flags |= CACHE_F_SEEN_4TO6;
+
+ header.pi.flags = 0;
+ header.pi.proto = htons(ETH_P_IPV6);
+
+ if (no_frag_hdr) {
+ iov[0].iov_base = &header;
+ iov[0].iov_len = sizeof(struct tun_pi) + sizeof(struct ip6);
+ iov[1].iov_base = p->data;
+ iov[1].iov_len = p->data_len;
+
+ if (writev(gcfg->tun_fd, iov, 2) < 0)
+ slog(LOG_WARNING, "error writing packet to tun "
+ "device: %s\n", strerror(errno));
+ } else {
+ header.ip6_frag.next_header = header.ip6.next_header;
+ header.ip6_frag.reserved = 0;
+ header.ip6_frag.ident = htonl(ntohs(p->ip4->ident));
+
+ header.ip6.next_header = 44;
+
+ iov[0].iov_base = &header;
+ iov[0].iov_len = sizeof(header);
+
+ off = (off & IP4_F_MASK) * 8;
+ frag_size = (frag_size - sizeof(header.ip6_frag)) & ~7;
+
+ while (p->data_len > 0) {
+ if (p->data_len < frag_size)
+ frag_size = p->data_len;
+
+ header.ip6.payload_length =
+ htons(sizeof(struct ip6_frag) + frag_size);
+ header.ip6_frag.offset_flags = htons(off);
+
+ iov[1].iov_base = p->data;
+ iov[1].iov_len = frag_size;
+
+ p->data += frag_size;
+ p->data_len -= frag_size;
+ off += frag_size;
+
+ if (p->data_len || (p->ip4->flags_offset &
+ htons(IP4_F_MF)))
+ header.ip6_frag.offset_flags |= htons(IP6_F_MF);
+
+ if (writev(gcfg->tun_fd, iov, 2) < 0) {
+ slog(LOG_WARNING, "error writing packet to "
+ "tun device: %s\n",
+ strerror(errno));
+ return;
+ }
+ }
+ }
+}
+
+static int parse_ip4(struct pkt *p)
+{
+ p->ip4 = (struct ip4 *)(p->data);
+
+ if (p->data_len < sizeof(struct ip4))
+ return -1;
+
+ p->header_len = (p->ip4->ver_ihl & 0x0f) * 4;
+
+ if ((p->ip4->ver_ihl >> 4) != 4 || p->header_len < sizeof(struct ip4) ||
+ p->data_len < p->header_len ||
+ ntohs(p->ip4->length) < p->header_len ||
+ validate_ip4_addr(&p->ip4->src) ||
+ validate_ip4_addr(&p->ip4->dest))
+ return -1;
+
+ if (p->data_len > ntohs(p->ip4->length))
+ p->data_len = ntohs(p->ip4->length);
+
+ p->data += p->header_len;
+ p->data_len -= p->header_len;
+ p->data_proto = p->ip4->proto;
+
+ if (p->data_proto == 1) {
+ if (p->ip4->flags_offset & htons(IP4_F_MASK | IP4_F_MF))
+ return -1; /* fragmented ICMP is unsupported */
+ if (p->data_len < sizeof(struct icmp))
+ return -1;
+ p->icmp = (struct icmp *)(p->data);
+ } else {
+ if ((p->ip4->flags_offset & htons(IP4_F_MF)) &&
+ (p->data_len & 0x7))
+ return -1;
+
+ if ((uint32_t)((ntohs(p->ip4->flags_offset) & IP4_F_MASK) * 8) +
+ p->data_len > 65535)
+ return -1;
+ }
+
+ return 0;
+}
+
+/* Estimates the most likely MTU of the link that the datagram in question was
+ * too large to fit through, using the algorithm from RFC 1191. */
+static unsigned int est_mtu(unsigned int too_big)
+{
+ static const unsigned int table[] = {
+ 65535, 32000, 17914, 8166, 4352, 2002, 1492, 1006, 508, 296, 0
+ };
+ int i;
+
+ for (i = 0; table[i]; ++i)
+ if (too_big > table[i])
+ return table[i];
+ return 68;
+}
+
+static void xlate_4to6_icmp_error(struct pkt *p)
+{
+ struct {
+ struct tun_pi pi;
+ struct ip6 ip6;
+ struct icmp icmp;
+ struct ip6 ip6_em;
+ } __attribute__ ((__packed__)) header;
+ struct iovec iov[2];
+ struct pkt p_em;
+ uint32_t mtu;
+ uint16_t em_len;
+ int allow_fake_source = 0;
+ struct cache_entry *orig_dest = NULL;
+
+ memset(&p_em, 0, sizeof(p_em));
+ p_em.data = p->data + sizeof(struct icmp);
+ p_em.data_len = p->data_len - sizeof(struct icmp);
+
+ if (p->icmp->type == 3 || p->icmp->type == 11 || p->icmp->type == 12) {
+ em_len = (ntohl(p->icmp->word) >> 14) & 0x3fc;
+ if (em_len) {
+ if (p_em.data_len < em_len)
+ return;
+ p_em.data_len = em_len;
+ }
+ }
+
+ if (parse_ip4(&p_em) < 0)
+ return;
+
+ if (p_em.data_proto == 1 && p_em.icmp->type != 8)
+ return;
+
+ if (sizeof(struct ip6) * 2 + sizeof(struct icmp) + p_em.data_len > 1280)
+ p_em.data_len = 1280 - sizeof(struct ip6) * 2 -
+ sizeof(struct icmp);
+
+ if (map_ip4_to_ip6(&header.ip6_em.src, &p_em.ip4->src, NULL) ||
+ map_ip4_to_ip6(&header.ip6_em.dest,
+ &p_em.ip4->dest, &orig_dest))
+ return;
+
+ xlate_header_4to6(&p_em, &header.ip6_em,
+ ntohs(p_em.ip4->length) - p_em.header_len);
+
+ switch (p->icmp->type) {
+ case 3: /* Destination Unreachable */
+ header.icmp.type = 1; /* Destination Unreachable */
+ header.icmp.word = 0;
+ switch (p->icmp->code) {
+ case 0: /* Network Unreachable */
+ case 1: /* Host Unreachable */
+ case 5: /* Source Route Failed */
+ case 6:
+ case 7:
+ case 8:
+ case 11:
+ case 12:
+ header.icmp.code = 0; /* No route to destination */
+ allow_fake_source = 1;
+ break;
+ case 2: /* Protocol Unreachable */
+ header.icmp.type = 4;
+ header.icmp.code = 1;
+ header.icmp.word = htonl(6);
+ break;
+ case 3: /* Port Unreachable */
+ header.icmp.code = 4; /* Port Unreachable */
+ break;
+ case 4: /* Fragmentation needed and DF set */
+ header.icmp.type = 2;
+ header.icmp.code = 0;
+ mtu = ntohl(p->icmp->word) & 0xffff;
+ if (mtu < 68)
+ mtu = est_mtu(ntohs(p_em.ip4->length));
+ mtu += MTU_ADJ;
+ if (mtu > gcfg->mtu)
+ mtu = gcfg->mtu;
+ if (mtu < 1280 && gcfg->allow_ident_gen && orig_dest) {
+ orig_dest->flags |= CACHE_F_GEN_IDENT;
+ mtu = 1280;
+ }
+ header.icmp.word = htonl(mtu);
+ allow_fake_source = 1;
+ break;
+ case 9:
+ case 10:
+ case 13:
+ case 15:
+ header.icmp.code = 1; /* Administratively prohibited */
+ break;
+ default:
+ return;
+ }
+ break;
+ case 11: /* Time Exceeded */
+ header.icmp.type = 3; /* Time Exceeded */
+ header.icmp.code = p->icmp->code;
+ header.icmp.word = 0;
+ break;
+ case 12: /* Parameter Problem */
+ if (p->icmp->code != 0 && p->icmp->code != 2)
+ return;
+ header.icmp.type = 4;
+ header.icmp.code = 0;
+ /* XXX do this and remove return */
+ return;
+ default:
+ return;
+ }
+
+ if (xlate_payload_4to6(&p_em, &header.ip6_em) < 0)
+ return;
+
+ if (map_ip4_to_ip6(&header.ip6.src, &p->ip4->src, NULL)) {
+ if (allow_fake_source)
+ header.ip6.src = gcfg->local_addr6;
+ else
+ return;
+ }
+
+ if (map_ip4_to_ip6(&header.ip6.dest, &p->ip4->dest, NULL))
+ return;
+
+ xlate_header_4to6(p, &header.ip6,
+ sizeof(header.icmp) + sizeof(header.ip6_em) + p_em.data_len);
+ --header.ip6.hop_limit;
+
+ header.icmp.cksum = 0;
+ header.icmp.cksum = ones_add(ip6_checksum(&header.ip6,
+ ntohs(header.ip6.payload_length), 58),
+ ones_add(ip_checksum(&header.icmp,
+ sizeof(header.icmp) +
+ sizeof(header.ip6_em)),
+ ip_checksum(p_em.data, p_em.data_len)));
+
+ header.pi.flags = 0;
+ header.pi.proto = htons(ETH_P_IPV6);
+
+ iov[0].iov_base = &header;
+ iov[0].iov_len = sizeof(header);
+ iov[1].iov_base = p_em.data;
+ iov[1].iov_len = p_em.data_len;
+
+ if (writev(gcfg->tun_fd, iov, 2) < 0)
+ slog(LOG_WARNING, "error writing packet to tun device: %s\n",
+ strerror(errno));
+}
+
+void handle_ip4(struct pkt *p)
+{
+ if (parse_ip4(p) < 0 || p->ip4->ttl == 0 ||
+ ip_checksum(p->ip4, p->header_len) ||
+ p->header_len + p->data_len != ntohs(p->ip4->length))
+ return;
+
+ if (p->icmp && ip_checksum(p->data, p->data_len))
+ return;
+
+ if (p->ip4->dest.s_addr == gcfg->local_addr4.s_addr) {
+ if (p->data_proto == 1)
+ host_handle_icmp4(p);
+ else
+ host_send_icmp4_error(3, 2, 0, p);
+ } else {
+ if (p->ip4->ttl == 1) {
+ host_send_icmp4_error(11, 0, 0, p);
+ return;
+ }
+ if (p->data_proto != 1 || p->icmp->type == 8 ||
+ p->icmp->type == 0)
+ xlate_4to6_data(p);
+ else
+ xlate_4to6_icmp_error(p);
+ }
+}
+
+static void host_send_icmp6(uint8_t tc, struct in6_addr *src,
+ struct in6_addr *dest, struct icmp *icmp,
+ uint8_t *data, int data_len)
+{
+ struct {
+ struct tun_pi pi;
+ struct ip6 ip6;
+ struct icmp icmp;
+ } __attribute__ ((__packed__)) header;
+ struct iovec iov[2];
+
+ header.pi.flags = 0;
+ header.pi.proto = htons(ETH_P_IPV6);
+ header.ip6.ver_tc_fl = htonl((0x6 << 28) | (tc << 20));
+ header.ip6.payload_length = htons(sizeof(header.icmp) + data_len);
+ header.ip6.next_header = 58;
+ header.ip6.hop_limit = 64;
+ header.ip6.src = *src;
+ header.ip6.dest = *dest;
+ header.icmp = *icmp;
+ header.icmp.cksum = 0;
+ header.icmp.cksum = ones_add(ip_checksum(data, data_len),
+ ip_checksum(&header.icmp, sizeof(header.icmp)));
+ header.icmp.cksum = ones_add(header.icmp.cksum,
+ ip6_checksum(&header.ip6,
+ data_len + sizeof(header.icmp), 58));
+ iov[0].iov_base = &header;
+ iov[0].iov_len = sizeof(header);
+ iov[1].iov_base = data;
+ iov[1].iov_len = data_len;
+ if (writev(gcfg->tun_fd, iov, data_len ? 2 : 1) < 0)
+ slog(LOG_WARNING, "error writing packet to tun device: %s\n",
+ strerror(errno));
+}
+
+static void host_send_icmp6_error(uint8_t type, uint8_t code, uint32_t word,
+ struct pkt *orig)
+{
+ struct icmp icmp;
+ int orig_len;
+
+ /* Don't send ICMP errors in response to ICMP messages other than
+ echo request */
+ if (orig->data_proto == 58 && orig->icmp->type != 128)
+ return;
+
+ orig_len = sizeof(struct ip6) + orig->header_len + orig->data_len;
+ if (orig_len > 1280 - sizeof(struct ip6) - sizeof(struct icmp))
+ orig_len = 1280 - sizeof(struct ip6) - sizeof(struct icmp);
+ icmp.type = type;
+ icmp.code = code;
+ icmp.word = htonl(word);
+ host_send_icmp6(0, &gcfg->local_addr6, &orig->ip6->src, &icmp,
+ (uint8_t *)orig->ip6, orig_len);
+}
+
+static void host_handle_icmp6(struct pkt *p)
+{
+ p->data += sizeof(struct icmp);
+ p->data_len -= sizeof(struct icmp);
+
+ switch (p->icmp->type) {
+ case 128:
+ p->icmp->type = 129;
+ host_send_icmp6((ntohl(p->ip6->ver_tc_fl) >> 20) & 0xff,
+ &p->ip6->dest, &p->ip6->src,
+ p->icmp, p->data, p->data_len);
+ break;
+ }
+}
+
+static void xlate_header_6to4(struct pkt *p, struct ip4 *ip4,
+ int payload_length, struct cache_entry *dest)
+{
+ ip4->ver_ihl = 0x45;
+ ip4->tos = (ntohl(p->ip6->ver_tc_fl) >> 20) & 0xff;
+ ip4->length = htons(sizeof(struct ip4) + payload_length);
+ if (p->ip6_frag) {
+ ip4->ident = htons(ntohl(p->ip6_frag->ident) & 0xffff);
+ ip4->flags_offset =
+ htons(ntohs(p->ip6_frag->offset_flags) >> 3);
+ if (p->ip6_frag->offset_flags & htons(IP6_F_MF))
+ ip4->flags_offset |= htons(IP4_F_MF);
+ } else if (dest && (dest->flags & CACHE_F_GEN_IDENT) &&
+ p->header_len + payload_length <= 1280) {
+ ip4->ident = htons(dest->ip4_ident++);
+ ip4->flags_offset = 0;
+ if (dest->ip4_ident == 0)
+ dest->ip4_ident++;
+ } else {
+ ip4->ident = 0;
+ ip4->flags_offset = htons(IP4_F_DF);
+ }
+ ip4->ttl = p->ip6->hop_limit;
+ ip4->proto = p->data_proto == 58 ? 1 : p->data_proto;
+ ip4->cksum = 0;
+}
+
+static int xlate_payload_6to4(struct pkt *p, struct ip4 *ip4)
+{
+ uint16_t *tck;
+ uint16_t cksum;
+
+ if (p->ip6_frag && (p->ip6_frag->offset_flags & ntohs(IP6_F_MASK)))
+ return 0;
+
+ switch (p->data_proto) {
+ case 58:
+ cksum = ~ip6_checksum(p->ip6, htons(p->ip6->payload_length) -
+ p->header_len, 58);
+ cksum = ones_add(p->icmp->cksum, cksum);
+ if (p->icmp->type == 128) {
+ p->icmp->type = 8;
+ p->icmp->cksum = ones_add(cksum, 128 - 8);
+ } else {
+ p->icmp->type = 0;
+ p->icmp->cksum = ones_add(cksum, 129 - 0);
+ }
+ return 0;
+ case 17:
+ if (p->data_len < 8)
+ return -1;
+ tck = (uint16_t *)(p->data + 6);
+ if (!*tck)
+ return -1; /* drop UDP packets with no checksum */
+ break;
+ case 6:
+ if (p->data_len < 20)
+ return -1;
+ tck = (uint16_t *)(p->data + 16);
+ break;
+ default:
+ return 0;
+ }
+ *tck = ones_add(*tck, convert_cksum(p->ip6, ip4));
+ return 0;
+}
+
+static void xlate_6to4_data(struct pkt *p)
+{
+ struct {
+ struct tun_pi pi;
+ struct ip4 ip4;
+ } __attribute__ ((__packed__)) header;
+ struct cache_entry *src = NULL, *dest = NULL;
+ struct iovec iov[2];
+
+ if (map_ip6_to_ip4(&header.ip4.dest, &p->ip6->dest, &dest, 0)) {
+ host_send_icmp6_error(1, 0, 0, p);
+ return;
+ }
+
+ if (map_ip6_to_ip4(&header.ip4.src, &p->ip6->src, &src, 1)) {
+ host_send_icmp6_error(1, 5, 0, p);
+ return;
+ }
+
+ if (sizeof(struct ip6) + p->header_len + p->data_len > gcfg->mtu) {
+ host_send_icmp6_error(2, 0, gcfg->mtu, p);
+ return;
+ }
+
+ xlate_header_6to4(p, &header.ip4, p->data_len, dest);
+ --header.ip4.ttl;
+
+ if (xlate_payload_6to4(p, &header.ip4) < 0)
+ return;
+
+ if (src)
+ src->flags |= CACHE_F_SEEN_6TO4;
+ if (dest)
+ dest->flags |= CACHE_F_SEEN_6TO4;
+
+ header.pi.flags = 0;
+ header.pi.proto = htons(ETH_P_IP);
+
+ header.ip4.cksum = ip_checksum(&header.ip4, sizeof(header.ip4));
+
+ iov[0].iov_base = &header;
+ iov[0].iov_len = sizeof(header);
+ iov[1].iov_base = p->data;
+ iov[1].iov_len = p->data_len;
+
+ if (writev(gcfg->tun_fd, iov, 2) < 0)
+ slog(LOG_WARNING, "error writing packet to tun device: %s\n",
+ strerror(errno));
+}
+
+static int parse_ip6(struct pkt *p)
+{
+ int hdr_len;
+
+ p->ip6 = (struct ip6 *)(p->data);
+
+ if (p->data_len < sizeof(struct ip6) ||
+ (ntohl(p->ip6->ver_tc_fl) >> 28) != 6 ||
+ validate_ip6_addr(&p->ip6->src) ||
+ validate_ip6_addr(&p->ip6->dest))
+ return -1;
+
+ p->data_proto = p->ip6->next_header;
+ p->data += sizeof(struct ip6);
+ p->data_len -= sizeof(struct ip6);
+
+ if (p->data_len > ntohs(p->ip6->payload_length))
+ p->data_len = ntohs(p->ip6->payload_length);
+
+ while (p->data_proto == 0 || p->data_proto == 43 ||
+ p->data_proto == 60) {
+ if (p->data_len < 2)
+ return -1;
+ hdr_len = (p->data[1] + 1) * 8;
+ if (p->data_len < hdr_len)
+ return -1;
+ p->data_proto = p->data[0];
+ p->data += hdr_len;
+ p->data_len -= hdr_len;
+ p->header_len += hdr_len;
+ }
+
+ if (p->data_proto == 44) {
+ if (p->ip6_frag || p->data_len < sizeof(struct ip6_frag))
+ return -1;
+ p->ip6_frag = (struct ip6_frag *)p->data;
+ p->data_proto = p->ip6_frag->next_header;
+ p->data += sizeof(struct ip6_frag);
+ p->data_len -= sizeof(struct ip6_frag);
+ p->header_len += sizeof(struct ip6_frag);
+
+ if ((p->ip6_frag->offset_flags & htons(IP6_F_MF)) &&
+ (p->data_len & 0x7))
+ return -1;
+
+ if ((uint32_t)(ntohs(p->ip6_frag->offset_flags) & IP6_F_MASK) +
+ p->data_len > 65535)
+ return -1;
+ }
+
+ if (p->data_proto == 58) {
+ if (p->ip6_frag && (p->ip6_frag->offset_flags &
+ htons(IP6_F_MASK | IP6_F_MF)))
+ return -1; /* fragmented ICMP is unsupported */
+ if (p->data_len < sizeof(struct icmp))
+ return -1;
+ p->icmp = (struct icmp *)(p->data);
+ }
+
+ return 0;
+}
+
+static void xlate_6to4_icmp_error(struct pkt *p)
+{
+ struct {
+ struct tun_pi pi;
+ struct ip4 ip4;
+ struct icmp icmp;
+ struct ip4 ip4_em;
+ } __attribute__ ((__packed__)) header;
+ struct iovec iov[2];
+ struct pkt p_em;
+ uint32_t mtu;
+ uint16_t em_len;
+ int allow_fake_source = 0;
+
+ memset(&p_em, 0, sizeof(p_em));
+ p_em.data = p->data + sizeof(struct icmp);
+ p_em.data_len = p->data_len - sizeof(struct icmp);
+
+ if (p->icmp->type == 1 || p->icmp->type == 3) {
+ em_len = (ntohl(p->icmp->word) >> 21) & 0x7f8;
+ if (em_len) {
+ if (p_em.data_len < em_len)
+ return;
+ p_em.data_len = em_len;
+ }
+ }
+
+ if (parse_ip6(&p_em) < 0)
+ return;
+
+ if (p_em.data_proto == 58 && p_em.icmp->type != 128)
+ return;
+
+ if (sizeof(struct ip4) * 2 + sizeof(struct icmp) + p_em.data_len > 576)
+ p_em.data_len = 576 - sizeof(struct ip4) * 2 -
+ sizeof(struct icmp);
+
+ switch (p->icmp->type) {
+ case 1: /* Destination Unreachable */
+ header.icmp.type = 3; /* Destination Unreachable */
+ header.icmp.word = 0;
+ switch (p->icmp->code) {
+ case 0: /* No route to destination */
+ case 2: /* Beyond scope of source address */
+ header.icmp.code = 1; /* Host Unreachable */
+ allow_fake_source = 1;
+ break;
+ case 1: /* Administratively prohibited */
+ header.icmp.code = 10; /* Administratively prohibited */
+ break;
+ case 4: /* Port Unreachable */
+ header.icmp.code = 3; /* Port Unreachable */
+ break;
+ default:
+ return;
+ }
+ break;
+ case 2: /* Packet Too Big */
+ header.icmp.type = 3; /* Destination Unreachable */
+ header.icmp.code = 4; /* Fragmentation needed */
+ mtu = ntohl(p->icmp->word);
+ if (mtu < 68) {
+ slog(LOG_INFO, "no mtu in Packet Too Big message\n");
+ return;
+ }
+ if (mtu > gcfg->mtu)
+ mtu = gcfg->mtu;
+ mtu -= MTU_ADJ;
+ header.icmp.word = htonl(mtu);
+ allow_fake_source = 1;
+ break;
+ case 3: /* Time Exceeded */
+ header.icmp.type = 11; /* Time Exceeded */
+ header.icmp.code = p->icmp->code;
+ header.icmp.word = 0;
+ break;
+ case 4: /* Parameter Problem */
+ if (p->icmp->code == 1) {
+ header.icmp.type = 3; /* Destination Unreachable */
+ header.icmp.code = 2; /* Protocol Unreachable */
+ header.icmp.word = 0;
+ break;
+ } else if (p->icmp->code != 0) {
+ return;
+ }
+ header.icmp.type = 12; /* Parameter Problem */
+ header.icmp.code = 0;
+ /* XXX do this and remove return */
+ return;
+ default:
+ return;
+ }
+
+ if (map_ip6_to_ip4(&header.ip4_em.src, &p_em.ip6->src, NULL, 0) ||
+ map_ip6_to_ip4(&header.ip4_em.dest,
+ &p_em.ip6->dest, NULL, 0) ||
+ xlate_payload_6to4(&p_em, &header.ip4_em) < 0)
+ return;
+
+ xlate_header_6to4(&p_em, &header.ip4_em,
+ ntohs(p_em.ip6->payload_length) - p_em.header_len, NULL);
+
+ header.ip4_em.cksum =
+ ip_checksum(&header.ip4_em, sizeof(header.ip4_em));
+
+ if (map_ip6_to_ip4(&header.ip4.src, &p->ip6->src, NULL, 0)) {
+ if (allow_fake_source)
+ header.ip4.src = gcfg->local_addr4;
+ else
+ return;
+ }
+
+ if (map_ip6_to_ip4(&header.ip4.dest, &p->ip6->dest, NULL, 0))
+ return;
+
+ xlate_header_6to4(p, &header.ip4, sizeof(header.icmp) +
+ sizeof(header.ip4_em) + p_em.data_len, NULL);
+ --header.ip4.ttl;
+
+ header.ip4.cksum = ip_checksum(&header.ip4, sizeof(header.ip4));
+
+ header.icmp.cksum = 0;
+ header.icmp.cksum = ones_add(ip_checksum(&header.icmp,
+ sizeof(header.icmp) +
+ sizeof(header.ip4_em)),
+ ip_checksum(p_em.data, p_em.data_len));
+
+ header.pi.flags = 0;
+ header.pi.proto = htons(ETH_P_IP);
+
+ iov[0].iov_base = &header;
+ iov[0].iov_len = sizeof(header);
+ iov[1].iov_base = p_em.data;
+ iov[1].iov_len = p_em.data_len;
+
+ if (writev(gcfg->tun_fd, iov, 2) < 0)
+ slog(LOG_WARNING, "error writing packet to tun device: %s\n",
+ strerror(errno));
+}
+
+void handle_ip6(struct pkt *p)
+{
+ if (parse_ip6(p) < 0 || p->ip6->hop_limit == 0 ||
+ p->header_len + p->data_len !=
+ ntohs(p->ip6->payload_length))
+ return;
+
+ if (p->icmp && ones_add(ip_checksum(p->data, p->data_len),
+ ip6_checksum(p->ip6, p->data_len, 58)))
+ return;
+
+ if (IN6_ARE_ADDR_EQUAL(&p->ip6->dest, &gcfg->local_addr6)) {
+ if (p->data_proto == 58)
+ host_handle_icmp6(p);
+ else
+ host_send_icmp6_error(4, 1, 6, p);
+ } else {
+ if (p->ip6->hop_limit == 1) {
+ host_send_icmp6_error(3, 0, 0, p);
+ return;
+ }
+
+ if (p->data_proto != 58 || p->icmp->type == 128 ||
+ p->icmp->type == 129)
+ xlate_6to4_data(p);
+ else
+ xlate_6to4_icmp_error(p);
+ }
+}
--- /dev/null
+.TH TAYGA "8" "June 2011" "TAYGA 0.9.2" ""
+
+.SH NAME
+tayga \- stateless NAT64 daemon
+
+.SH SYNOPSIS
+.B tayga
+.I [OPTION]...
+.PP
+.B "tayga \-\-mktun"
+.I [OPTION]...
+.PP
+.B "tayga \-\-rmtun"
+.I [OPTION]...
+
+.SH DESCRIPTION
+TAYGA is a stateless NAT64 daemon for Linux. Using the in-kernel TUN network
+driver, TAYGA receives IPv4 and IPv6 packets from the host's network stack,
+translates them to the other protocol, and then sends the translated packets
+back to the host using the same TUN interface.
+.P
+Translation is compliant with IETF Internet-Draft
+draft-ietf-behave-v6v4-xlate-23, and address mapping is performed in
+accordance with RFC 6052. Optionally, TAYGA may be configured to dynamically
+map IPv6 hosts to addresses drawn from a configured IPv4 address pool.
+.P
+As a stateless NAT, TAYGA requires a one-to-one mapping between IPv4 addresses
+and IPv6 addresses. Mapping multiple IPv6 addresses onto a single IPv4
+address can be achieved by mapping IPv6 addresses to private IPv4 addresses
+with TAYGA and then using a stateful NAT44 (such as the iptables(8) MASQUERADE
+target) to map the private IPv4 addresses onto the desired single IPv4 address.
+.P
+TAYGA's configuration is stored in the tayga.conf(5) file, which is usually
+found in /etc/tayga.conf or /usr/local/etc/tayga.conf.
+
+.SH INVOCATION
+Without the
+.B \-\-mktun
+or
+.B \-\-rmtun
+options, the `tayga` executable runs as a daemon, translating packets as
+described above.
+.P
+The
+.B \-\-mktun
+and
+.B \-\-rmtun
+options instruct TAYGA to create or destroy, respectively, its configured TUN
+device as a "persistent" interface and then immediately exit.
+.P
+Persistent TUN devices remain present on the host system even when TAYGA is
+not running. This allows host-side network parameters and firewall rules to
+be configured prior to commencement of packet translation. This may simplify
+network configuration on the host; for example, systems which use a
+Debian-style /etc/network/interfaces file may configure TAYGA's TUN device at
+boot by running `tayga --mktun` as a "pre-up" command and then configuring the
+TUN device as any other network interface.
+
+.SH OPTIONS
+.TP
+.BI "\-c " configfile " | \-\-config " configfile
+Read configuration options from
+.I configfile
+.TP
+.B \-d
+Enable debug messages (enables
+.B \-\-nodetach
+as well)
+.TP
+.B "\-n | \-\-nodetach"
+Do not detach from terminal
+.TP
+.BI "\-u " userid " | \-\-user " userid
+Set uid to
+.I userid
+after initialization
+.TP
+.BI "\-g " groupid " | \-\-group " groupid
+Set gid to
+.I groupid
+after initialization
+.TP
+.B "\-r | \-\-chroot"
+chroot() to data\-dir (specified in config file)
+.TP
+.BI "\-p " pidfile " | \-\-pidfile " pidfile
+Write process ID of daemon to
+.I pidfile
+.SH AUTHOR
+Written by Nathan Lutchansky <lutchann@litech.org>
+.SH COPYRIGHT
+Copyright \(co 2010 Nathan Lutchansky
+.br
+License GPLv2+: GNU GPL version 2 or later
+.br
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.
+.SH "SEE ALSO"
+
+.BR tayga.conf (5)
+.br
+.BR <http://www.litech.org/tayga/>
--- /dev/null
+/*
+ * tayga.c -- main server code
+ *
+ * part of TAYGA <http://www.litech.org/tayga/>
+ * Copyright (C) 2010 Nathan Lutchansky <lutchann@litech.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <tayga.h>
+
+#include <stdarg.h>
+#include <signal.h>
+#include <getopt.h>
+#include <pwd.h>
+#include <grp.h>
+
+#define USAGE_TEXT \
+"Usage: %s [-c|--config CONFIGFILE] [-d] [-n|--nodetach] [-u|--user USERID]\n" \
+" [-g|--group GROUPID] [-r|--chroot] [-p|--pidfile PIDFILE]\n\n" \
+"--config FILE : Read configuration options from FILE\n" \
+"-d : Enable debug messages (implies --nodetach)\n" \
+"--nodetach : Do not detach from terminal\n" \
+"--user USERID : Set uid to USERID after initialization\n" \
+"--group GROUPID : Set gid to GROUPID after initialization\n" \
+"--chroot : chroot() to data-dir (specified in config file)\n\n" \
+"--pidfile FILE : Write process ID of daemon to FILE\n"
+
+extern struct config *gcfg;
+time_t now;
+
+static int signalfds[2];
+static int use_stdout;
+
+void slog(int priority, const char *format, ...)
+{
+ va_list ap;
+
+ va_start(ap, format);
+ if (use_stdout)
+ vprintf(format, ap);
+ else if (priority != LOG_DEBUG)
+ vsyslog(priority, format, ap);
+ va_end(ap);
+}
+
+static void set_nonblock(int fd)
+{
+ int flags;
+
+ flags = fcntl(fd, F_GETFL);
+ if (flags < 0) {
+ slog(LOG_CRIT, "fcntl F_GETFL returned %s\n", strerror(errno));
+ exit(1);
+ }
+ flags |= O_NONBLOCK;
+ if (fcntl(fd, F_SETFL, flags) < 0) {
+ slog(LOG_CRIT, "fcntl F_SETFL returned %s\n", strerror(errno));
+ exit(1);
+ }
+}
+
+void read_random_bytes(void *d, int len)
+{
+ int ret;
+
+ ret = read(gcfg->urandom_fd, d, len);
+ if (ret < 0) {
+ slog(LOG_CRIT, "read /dev/urandom returned %s\n",
+ strerror(errno));
+ exit(1);
+ }
+ if (ret < len) {
+ slog(LOG_CRIT, "read /dev/urandom returned EOF\n");
+ exit(1);
+ }
+}
+
+static void tun_setup(int do_mktun, int do_rmtun)
+{
+ struct ifreq ifr;
+ int fd;
+
+ gcfg->tun_fd = open("/dev/net/tun", O_RDWR);
+ if (gcfg->tun_fd < 0) {
+ slog(LOG_CRIT, "Unable to open /dev/net/tun, aborting: %s\n",
+ strerror(errno));
+ exit(1);
+ }
+
+ memset(&ifr, 0, sizeof(ifr));
+ ifr.ifr_flags = IFF_TUN;
+ strcpy(ifr.ifr_name, gcfg->tundev);
+ if (ioctl(gcfg->tun_fd, TUNSETIFF, &ifr) < 0) {
+ slog(LOG_CRIT, "Unable to attach tun device %s, aborting: "
+ "%s\n", gcfg->tundev, strerror(errno));
+ exit(1);
+ }
+
+ if (do_mktun) {
+ if (ioctl(gcfg->tun_fd, TUNSETPERSIST, 1) < 0) {
+ slog(LOG_CRIT, "Unable to set persist flag on %s, "
+ "aborting: %s\n", gcfg->tundev,
+ strerror(errno));
+ exit(1);
+ }
+ if (ioctl(gcfg->tun_fd, TUNSETOWNER, 0) < 0) {
+ slog(LOG_CRIT, "Unable to set owner on %s, "
+ "aborting: %s\n", gcfg->tundev,
+ strerror(errno));
+ exit(1);
+ }
+ if (ioctl(gcfg->tun_fd, TUNSETGROUP, 0) < 0) {
+ slog(LOG_CRIT, "Unable to set group on %s, "
+ "aborting: %s\n", gcfg->tundev,
+ strerror(errno));
+ exit(1);
+ }
+ slog(LOG_NOTICE, "Created persistent tun device %s\n",
+ gcfg->tundev);
+ return;
+ } else if (do_rmtun) {
+ if (ioctl(gcfg->tun_fd, TUNSETPERSIST, 0) < 0) {
+ slog(LOG_CRIT, "Unable to clear persist flag on %s, "
+ "aborting: %s\n", gcfg->tundev,
+ strerror(errno));
+ exit(1);
+ }
+ slog(LOG_NOTICE, "Removed persistent tun device %s\n",
+ gcfg->tundev);
+ return;
+ }
+
+ set_nonblock(gcfg->tun_fd);
+
+ fd = socket(PF_INET, SOCK_DGRAM, 0);
+ if (fd < 0) {
+ slog(LOG_CRIT, "Unable to create socket, aborting: %s\n",
+ strerror(errno));
+ exit(1);
+ }
+ memset(&ifr, 0, sizeof(ifr));
+ strcpy(ifr.ifr_name, gcfg->tundev);
+ if (ioctl(fd, SIOCGIFMTU, &ifr) < 0) {
+ slog(LOG_CRIT, "Unable to query MTU, aborting: %s\n",
+ strerror(errno));
+ exit(1);
+ }
+ close(fd);
+
+ gcfg->mtu = ifr.ifr_mtu;
+
+ slog(LOG_INFO, "Using tun device %s with MTU %d\n", gcfg->tundev,
+ gcfg->mtu);
+}
+
+static void signal_handler(int signal)
+{
+ write(signalfds[1], &signal, sizeof(signal));
+}
+
+static void signal_setup(void)
+{
+ struct sigaction act;
+
+ if (pipe(signalfds) < 0) {
+ slog(LOG_INFO, "unable to create signal pipe, aborting: %s\n",
+ strerror(errno));
+ exit(1);
+ }
+ set_nonblock(signalfds[0]);
+ set_nonblock(signalfds[1]);
+ memset(&act, 0, sizeof(act));
+ act.sa_handler = signal_handler;
+ sigaction(SIGINT, &act, NULL);
+ sigaction(SIGHUP, &act, NULL);
+ sigaction(SIGUSR1, &act, NULL);
+ sigaction(SIGUSR2, &act, NULL);
+ sigaction(SIGQUIT, &act, NULL);
+ sigaction(SIGTERM, &act, NULL);
+}
+
+static void read_from_tun(void)
+{
+ int ret;
+ struct tun_pi *pi = (struct tun_pi *)gcfg->recv_buf;
+ struct pkt pbuf, *p = &pbuf;
+
+ ret = read(gcfg->tun_fd, gcfg->recv_buf, gcfg->recv_buf_size);
+ if (ret < 0) {
+ if (errno == EAGAIN)
+ return;
+ slog(LOG_ERR, "received error when reading from tun "
+ "device: %s\n", strerror(errno));
+ return;
+ }
+ if (ret < sizeof(struct tun_pi)) {
+ slog(LOG_WARNING, "short read from tun device "
+ "(%d bytes)\n", ret);
+ return;
+ }
+ if (ret == gcfg->recv_buf_size) {
+ slog(LOG_WARNING, "dropping oversized packet\n");
+ return;
+ }
+ memset(p, 0, sizeof(struct pkt));
+ p->data = gcfg->recv_buf + sizeof(struct tun_pi);
+ p->data_len = ret - sizeof(struct tun_pi);
+ switch (ntohs(pi->proto)) {
+ case ETH_P_IP:
+ handle_ip4(p);
+ break;
+ case ETH_P_IPV6:
+ handle_ip6(p);
+ break;
+ default:
+ slog(LOG_WARNING, "Dropping unknown proto %04x from "
+ "tun device\n", ntohs(pi->proto));
+ break;
+ }
+}
+
+static void read_from_signalfd(void)
+{
+ int ret, sig;
+
+ for (;;) {
+ ret = read(signalfds[0], &sig, sizeof(sig));
+ if (ret < 0) {
+ if (errno == EAGAIN)
+ return;
+ slog(LOG_CRIT, "got error %s from signalfd\n",
+ strerror(errno));
+ exit(1);
+ }
+ if (ret == 0) {
+ slog(LOG_CRIT, "signal fd was closed\n");
+ exit(1);
+ }
+ if (gcfg->dynamic_pool)
+ dynamic_maint(gcfg->dynamic_pool, 1);
+ slog(LOG_NOTICE, "exiting on signal %d\n", sig);
+ exit(0);
+ }
+}
+
+int main(int argc, char **argv)
+{
+ int c, ret, longind;
+ int pidfd;
+ struct pollfd pollfds[2];
+ struct map6 *m6;
+ char addrbuf[INET6_ADDRSTRLEN];
+
+ char *conffile = TAYGA_CONF_PATH;
+ char *user = NULL;
+ char *group = NULL;
+ char *pidfile = NULL;
+ int do_chroot = 0;
+ int detach = 1;
+ int do_mktun = 0;
+ int do_rmtun = 0;
+ struct passwd *pw = NULL;
+ struct group *gr = NULL;
+
+ static struct option longopts[] = {
+ { "mktun", 0, 0, 0 },
+ { "rmtun", 0, 0, 0 },
+ { "help", 0, 0, 0 },
+ { "config", 1, 0, 'c' },
+ { "nodetach", 0, 0, 'n' },
+ { "user", 1, 0, 'u' },
+ { "group", 1, 0, 'g' },
+ { "chroot", 0, 0, 'r' },
+ { "pidfile", 1, 0, 'p' },
+ { 0, 0, 0, 0 }
+ };
+
+ for (;;) {
+ c = getopt_long(argc, argv, "c:dnu:g:rp:", longopts, &longind);
+ if (c == -1)
+ break;
+ switch (c) {
+ case 0:
+ if (longind == 0) {
+ if (do_rmtun) {
+ fprintf(stderr, "Error: both --mktun "
+ "and --rmtun specified.\n");
+ exit(1);
+ }
+ do_mktun = 1;
+ } else if (longind == 1) {
+ if (do_mktun) {
+ fprintf(stderr, "Error: both --mktun "
+ "and --rmtun specified.\n");
+ exit(1);
+ }
+ do_rmtun = 1;
+ } else if (longind == 2) {
+ fprintf(stderr, USAGE_TEXT, argv[0]);
+ exit(0);
+ }
+ break;
+ case 'c':
+ conffile = optarg;
+ break;
+ case 'd':
+ use_stdout = 1;
+ detach = 0;
+ break;
+ case 'n':
+ detach = 0;
+ break;
+ case 'u':
+ user = optarg;
+ break;
+ case 'g':
+ group = optarg;
+ break;
+ case 'r':
+ do_chroot = 1;
+ break;
+ case 'p':
+ pidfile = optarg;
+ break;
+ default:
+ fprintf(stderr, "Try `%s --help' for more "
+ "information.\n", argv[0]);
+ exit(1);
+ }
+ }
+
+ if (do_mktun || do_rmtun) {
+ use_stdout = 1;
+ if (user) {
+ fprintf(stderr, "Error: cannot specify -u or --user "
+ "with mktun/rmtun operation\n");
+ exit(1);
+ }
+ if (group) {
+ fprintf(stderr, "Error: cannot specify -g or --group "
+ "with mktun/rmtun operation\n");
+ exit(1);
+ }
+ if (do_chroot) {
+ fprintf(stderr, "Error: cannot specify -r or --chroot "
+ "with mktun/rmtun operation\n");
+ exit(1);
+ }
+ read_config(conffile);
+ tun_setup(do_mktun, do_rmtun);
+ return 0;
+ }
+
+ if (!use_stdout)
+ openlog("tayga", LOG_PID | LOG_NDELAY, LOG_DAEMON);
+
+ if (user) {
+ pw = getpwnam(user);
+ if (!pw) {
+ slog(LOG_CRIT, "Error: user %s does not exist\n", user);
+ exit(1);
+ }
+ }
+
+ if (group) {
+ gr = getgrnam(group);
+ if (!gr) {
+ slog(LOG_CRIT, "Error: group %s does not exist\n",
+ group);
+ exit(1);
+ }
+ }
+
+ read_config(conffile);
+
+ if (!gcfg->data_dir[0]) {
+ if (do_chroot) {
+ slog(LOG_CRIT, "Error: cannot chroot when no data-dir "
+ "is specified in %s\n", conffile);
+ exit(1);
+ }
+ chdir("/");
+ } else if (chdir(gcfg->data_dir) < 0) {
+ if (user || errno != ENOENT) {
+ slog(LOG_CRIT, "Error: unable to chdir to %s, "
+ "aborting: %s\n", gcfg->data_dir,
+ strerror(errno));
+ exit(1);
+ }
+ if (mkdir(gcfg->data_dir, 0777) < 0) {
+ slog(LOG_CRIT, "Error: unable to create %s, aborting: "
+ "%s\n", gcfg->data_dir,
+ strerror(errno));
+ exit(1);
+ }
+ if (chdir(gcfg->data_dir) < 0) {
+ slog(LOG_CRIT, "Error: created %s but unable to chdir "
+ "to it!?? (%s)\n", gcfg->data_dir,
+ strerror(errno));
+ exit(1);
+ }
+ }
+
+ if (do_chroot && (!pw || pw->pw_uid == 0)) {
+ slog(LOG_CRIT, "Error: chroot is ineffective without also "
+ "specifying the -u option to switch to an "
+ "unprivileged user\n");
+ exit(1);
+ }
+
+ if (pidfile) {
+ pidfd = open(pidfile, O_WRONLY | O_CREAT | O_TRUNC, 0666);
+ if (pidfd < 0) {
+ slog(LOG_CRIT, "Error, unable to open %s for "
+ "writing: %s\n", pidfile,
+ strerror(errno));
+ exit(1);
+ }
+ }
+
+ if (detach && daemon(1, 0) < 0) {
+ slog(LOG_CRIT, "Error, unable to fork and detach: %s\n",
+ strerror(errno));
+ exit(1);
+ }
+
+ if (pidfile) {
+ snprintf(addrbuf, sizeof(addrbuf), "%ld\n", (long)getpid());
+ write(pidfd, addrbuf, strlen(addrbuf));
+ close(pidfd);
+ }
+
+ slog(LOG_INFO, "starting TAYGA " VERSION "\n");
+
+ if (gcfg->cache_size) {
+ gcfg->urandom_fd = open("/dev/urandom", O_RDONLY);
+ if (gcfg->urandom_fd < 0) {
+ slog(LOG_CRIT, "Unable to open /dev/urandom, "
+ "aborting: %s\n", strerror(errno));
+ exit(1);
+ }
+ read_random_bytes(gcfg->rand, 8 * sizeof(uint32_t));
+ gcfg->rand[0] |= 1; /* need an odd number for IPv4 hash */
+ }
+
+ tun_setup(0, 0);
+
+ if (do_chroot) {
+ if (chroot(gcfg->data_dir) < 0) {
+ slog(LOG_CRIT, "Unable to chroot to %s: %s\n",
+ gcfg->data_dir, strerror(errno));
+ exit(1);
+ }
+ chdir("/");
+ }
+
+ if (gr) {
+ if (setregid(gr->gr_gid, gr->gr_gid) < 0 ||
+ setregid(gr->gr_gid, gr->gr_gid) < 0 ||
+ setgroups(1, &gr->gr_gid) < 0) {
+ slog(LOG_CRIT, "Error: cannot set gid to %d: %s\n",
+ gr->gr_gid, strerror(errno));
+ exit(1);
+ }
+ }
+
+ if (pw) {
+ if (setreuid(pw->pw_uid, pw->pw_uid) < 0 ||
+ setreuid(pw->pw_uid, pw->pw_uid) < 0) {
+ slog(LOG_CRIT, "Error: cannot set uid to %d: %s\n",
+ pw->pw_uid, strerror(errno));
+ exit(1);
+ }
+ }
+
+ signal_setup();
+
+ inet_ntop(AF_INET, &gcfg->local_addr4, addrbuf, sizeof(addrbuf));
+ slog(LOG_INFO, "TAYGA's IPv4 address: %s\n", addrbuf);
+ inet_ntop(AF_INET6, &gcfg->local_addr6, addrbuf, sizeof(addrbuf));
+ slog(LOG_INFO, "TAYGA's IPv6 address: %s\n", addrbuf);
+ m6 = list_entry(gcfg->map6_list.prev, struct map6, list);
+ if (m6->type == MAP_TYPE_RFC6052) {
+ inet_ntop(AF_INET6, &m6->addr, addrbuf, sizeof(addrbuf));
+ slog(LOG_INFO, "NAT64 prefix: %s/%d\n",
+ addrbuf, m6->prefix_len);
+ if (m6->addr.s6_addr32[0] == WKPF)
+ slog(LOG_INFO, "Note: traffic between IPv6 hosts and "
+ "private IPv4 addresses (i.e. to/from "
+ "64:ff9b::10.0.0.0/104, "
+ "64:ff9b::192.168.0.0/112, etc) "
+ "will be dropped. Use a translation "
+ "prefix within your organization's "
+ "IPv6 address space instead of "
+ "64:ff9b::/96 if you need your "
+ "IPv6 hosts to communicate with "
+ "private IPv4 addresses.\n");
+ }
+ if (gcfg->dynamic_pool) {
+ inet_ntop(AF_INET, &gcfg->dynamic_pool->map4.addr,
+ addrbuf, sizeof(addrbuf));
+ slog(LOG_INFO, "Dynamic pool: %s/%d\n", addrbuf,
+ gcfg->dynamic_pool->map4.prefix_len);
+ if (gcfg->data_dir[0])
+ load_dynamic(gcfg->dynamic_pool);
+ else
+ slog(LOG_INFO, "Note: dynamically-assigned mappings "
+ "will not be saved across restarts. "
+ "Specify data-dir in %s if you would "
+ "like dynamic mappings to be "
+ "persistent.\n", conffile);
+ }
+
+ if (gcfg->cache_size)
+ create_cache();
+
+ gcfg->recv_buf = (uint8_t *)malloc(gcfg->recv_buf_size);
+ if (!gcfg->recv_buf) {
+ slog(LOG_CRIT, "Error: unable to allocate %d bytes for "
+ "receive buffer\n", gcfg->recv_buf_size);
+ exit(1);
+ }
+
+ memset(pollfds, 0, 2 * sizeof(struct pollfd));
+ pollfds[0].fd = signalfds[0];
+ pollfds[0].events = POLLIN;
+ pollfds[1].fd = gcfg->tun_fd;
+ pollfds[1].events = POLLIN;
+
+ for (;;) {
+ ret = poll(pollfds, 2, POOL_CHECK_INTERVAL * 1000);
+ if (ret < 0) {
+ if (errno == EINTR)
+ continue;
+ slog(LOG_ERR, "poll returned error %s\n",
+ strerror(errno));
+ exit(1);
+ }
+ time(&now);
+ if (pollfds[0].revents)
+ read_from_signalfd();
+ if (pollfds[1].revents)
+ read_from_tun();
+ if (gcfg->cache_size && (gcfg->last_cache_maint +
+ CACHE_CHECK_INTERVAL < now ||
+ gcfg->last_cache_maint > now)) {
+ addrmap_maint();
+ gcfg->last_cache_maint = now;
+ }
+ if (gcfg->dynamic_pool && (gcfg->last_dynamic_maint +
+ POOL_CHECK_INTERVAL < now ||
+ gcfg->last_dynamic_maint > now)) {
+ dynamic_maint(gcfg->dynamic_pool, 0);
+ gcfg->last_dynamic_maint = now;
+ }
+ }
+
+ return 0;
+}
--- /dev/null
+.TH TAYGA.CONF "5" "June 2011" "TAYGA 0.9.2" ""
+.SH NAME
+tayga.conf \- configuration file of the TAYGA stateless NAT64 daemon
+.SH DESCRIPTION
+This file contains the configuration parameters for the TAYGA stateless NAT64
+daemon. It must exist and contain the mandatory configuration items or
+TAYGA will refuse to run.
+.P
+The configuration directives are listed below. With the exception of the
+.B map
+directive, only one instance of each directive may appear in tayga.conf.
+.TP
+.BI "tun-device " device
+Name of the network interface that will be created by the kernel TUN module
+for TAYGA to exchange IPv4 and IPv6 packets with the in-kernel TCP/IP stack.
+If
+.I device
+does not already exist as a persistent interface (created by the
+.B \-\-mktun
+flag to tayga(8), for example), it will be created automatically when the
+TAYGA daemon starts and destroyed when the daemon exits.
+.IP
+Note that TAYGA does not configure the host-side parameters of
+.I device.
+This must be done by the system administrator using the ifconfig(8), route(8),
+and/or ip(8) commands.
+.IP
+This configuration directive is mandatory.
+.TP
+.BI "ipv4-addr " ipv4_address
+IPv4 address that TAYGA will use as the source address for ICMPv4 errors
+generated by the translation process. TAYGA will also respond to ICMP echo
+requests (pings) at this address.
+.IP
+.I ipv4_address
+is permitted to overlap with the prefix specified in the
+.B dynamic-pool
+directive, in which case
+.I ipv4_address
+will be removed from the pool of available addresses.
+.IP
+This configuration directive is mandatory.
+.TP
+.BI "ipv6-addr " ipv6_address
+IPv6 address that TAYGA will use as the source address for ICMPv6 errors
+generated by the translation process. TAYGA will also respond to ICMPv6 echo
+requests (pings) at this address.
+.IP
+This configuration directive is mandatory unless the NAT64 prefix is specified
+with the
+.B prefix
+directive, in which case TAYGA will generate its IPv6 address by mapping the
+address specified in
+.B ipv4-addr
+into the NAT64 prefix.
+.TP
+.BI "prefix " ipv6_address/length
+NAT64 prefix for mapping IPv4 addresses into the IPv6 address space. TAYGA
+performs address translation as specified in RFC 6052, and only prefix lengths
+allowed in that document will be permitted in the
+.B prefix
+directive.
+.IP
+The use of either a Network-Specific Prefix or the Well-Known Prefix
+(64:ff9b::/96) is allowed,
+.B however,
+as required by RFC 6052, TAYGA will refuse to translate packets with a
+source or destination address composed of the Well-Known Prefix and a
+non-global IPv4 address (10.x.x.x, 192.168.x.x, etc).
+.IP
+Use of the
+.B prefix
+directive is optional. If it is not specified, all addresses to be translated
+must be listed individually with the
+.B map
+directive.
+.TP
+.BI "map " "ipv4_address ipv6_address"
+Creates a static mapping between
+.I ipv4_address
+and
+.I ipv6_address
+to be used when translating IPv4 packets to IPv6 or IPv6 packets to IPv4.
+Multiple
+.B map
+directives are permitted in the tayga.conf file.
+.IP
+.I ipv4_address
+is permitted to overlap with the prefix specified in the
+.B dynamic-pool
+directive, in which case
+.I ipv4_address
+will be removed from the pool of available addresses.
+.IP
+.I ipv6_address
+.B "must not"
+overlap with the prefix specified in the
+.B prefix
+directive.
+.TP
+.BI "dynamic-pool " ipv4_address/length
+Address prefix containing addresses available to be assigned to IPv6 hosts.
+.I
+length
+must be 31 or less, as the lowest-numbered address in the prefix is considered
+reserved and will not be used for dynamic assignment.
+.IP
+If TAYGA receives an IPv6 packet to be translated with an IPv6 source address
+that does not match any existing mapping rules (as specified by the
+.B map
+directive or the
+.B prefix
+directive), TAYGA will create a dynamic mapping between the IPv6 address and
+an IPv4 address drawn from the prefix specified by the
+.B dynamic-pool
+directive. This mapping will be valid for two hours and four minutes after
+the last packet matching the mapping is translated.
+.IP
+The
+.B dynamic-pool
+directive is optional. If it is not specified, all IPv6 addresses appearing
+in packets passing through TAYGA must match the NAT64 prefix or a static
+mapping rule.
+.TP
+.BI "data-dir " path
+The absolute path of a directory where TAYGA should store its data files.
+Presently the only data file that TAYGA will store is the
+.I dynamic.map
+file, which tracks dynamic address assignments made from the dynamic pool.
+.IP
+.I path
+is also the directory that will be used as a chroot(2) "jail" if the
+.B \-\-chroot
+command-line option is specified to the TAYGA daemon.
+.IP
+The TAYGA daemon must have full permissions (rwx) to
+.I path
+after it has dropped superuser privileges. Generally this means that the
+owner of
+.I path
+should be the user specified in the
+.B \-\-user
+command-line option.
+.IP
+The
+.B data-dir
+directive is optional, but without it, dynamic mappings will be lost when the
+TAYGA daemon is stopped. Also, use of the
+.B \-\-chroot
+command-line option will not be possible.
+.TP
+.BI "strict-frag-hdr " on|off|true|false|1|0
+Flag to control whether TAYGA adds fragmentation headers to IPv6 packets that
+do not require fragmentation. RFC 6145 stipulates that the fragmentation
+header SHOULD be added to all translated packets when the sender has not set
+the DF (Don't Fragment) flag, to indicate that the sender allows fragmentation
+and may not support path MTU discovery. Unfortunately, some firewall
+implementations drop IPv6 packets that are fragmented into a single fragment,
+most notably Linux netfilter conntrack in kernels older than 2.6.34.
+.IP
+When
+.B strict-frag-hdr
+is set to
+.B true, on,
+or
+.B 1,
+fragmentation headers will be added to all translated packets where the
+DF bit in the original packet is clear. This is the RFC-complaint behavior.
+.IP
+When
+.B strict-frag-hdr
+is set to
+.B false, off,
+or
+.B 0,
+fragmentation headers will be suppressed when the translated packet fits
+entirely within the IPv6 network MTU (1280 bytes). This is the default
+behavior.
+.IP
+This setting does not affect packets that arrive at TAYGA already fragmented,
+or packets that must be fragmented to fit within the IPv6 network MTU.
+
+.SH "SEE ALSO"
+.BR tayga (8)
+.br
+.BR <http://www.litech.org/tayga/>
--- /dev/null
+#
+# Sample configuration file for TAYGA 0.9.2
+#
+# Modify this to use your own addresses!!
+#
+
+#
+# TUN device that TAYGA will use to exchange IPv4 and IPv6 packets with the
+# kernel. You may use any name you like, but `nat64' is recommended.
+#
+# This device may be created before starting the tayga daemon by running
+# `tayga --mktun`. This allows routing and firewall rules to be set up prior
+# to commencement of packet translation.
+#
+# Mandatory.
+#
+tun-device nat64
+
+#
+# TAYGA's IPv4 address. This is NOT your router's IPv4 address! TAYGA
+# requires its own address because it acts as an IPv4 and IPv6 router, and
+# needs to be able to send ICMP messages. TAYGA will also respond to ICMP
+# echo requests (ping) at this address.
+#
+# This address can safely be located inside the dynamic-pool prefix.
+#
+# Mandatory.
+#
+ipv4-addr 192.168.255.1
+
+#
+# TAYGA's IPv6 address. This is NOT your router's IPv6 address! TAYGA
+# requires its own address because it acts as an IPv4 and IPv6 router, and
+# needs to be able to send ICMP messages. TAYGA will also respond to ICMP
+# echo requests (ping6) at this address.
+#
+# You can leave ipv6-addr unspecified and TAYGA will construct its IPv6
+# address using ipv4-addr and the NAT64 prefix.
+#
+# Optional if the NAT64 prefix is specified, otherwise mandatory. It is also
+# mandatory if the NAT64 prefix is 64:ff9b::/96 and ipv4-addr is a private
+# (RFC1918) address.
+#
+#ipv6-addr 2001:db8:1::2
+
+#
+# The NAT64 prefix. The IPv4 address space is mapped into the IPv6 address
+# space by prepending this prefix to the IPv4 address. Using a /96 prefix is
+# recommended in most situations, but all lengths specified in RFC 6052 are
+# supported.
+#
+# This must be a prefix selected from your organization's IPv6 address space
+# or the Well-Known Prefix 64:ff9b::/96. Note that using the Well-Known
+# Prefix will prohibit IPv6 hosts from contacting IPv4 hosts that have private
+# (RFC1918) addresses, per RFC 6052.
+#
+# The NAT64 prefix need not be specified if all required address mappings are
+# listed in `map' directives. (See below.)
+#
+# Optional.
+#
+prefix 2001:db8:1:ffff::/96
+# prefix 64:ff9b::/96
+
+#
+# Dynamic pool prefix. IPv6 hosts which send traffic through TAYGA (and do
+# not correspond to a static map or an IPv4-translatable address in the NAT64
+# prefix) will be assigned an IPv4 address from the dynamic pool. Dynamic
+# maps are valid for 124 minutes after the last matching packet is seen.
+#
+# If no unassigned addresses remain in the dynamic pool (or no dynamic pool is
+# configured), packets from unknown IPv6 hosts will be rejected with an ICMP
+# unreachable error.
+#
+# Optional.
+#
+dynamic-pool 192.168.255.0/24
+
+#
+# Persistent data storage directory. The dynamic.map file, which saves the
+# dynamic maps that are created from dynamic-pool, is stored in this
+# directory. Omit if you do not need these maps to be persistent between
+# instances of TAYGA.
+#
+# Optional.
+#
+data-dir /var/db/tayga
+
+#
+# Establishes a single-host map. If an IPv6 host should be consistently
+# reachable at a specific IPv4 address, the mapping can be specified in a
+# `map' directive. (IPv6 hosts numbered with an IPv4-translatable address do
+# not need map directives.)
+#
+# IPv4 addresses specified in the `map' directive can safely be located inside
+# the dynamic-pool prefix.
+#
+# Optional.
+#
+#map 192.168.5.42 2001:db8:1:4444::1
+#map 192.168.5.43 2001:db8:1:4444::2
+#map 192.168.255.2 2001:db8:1:569::143
--- /dev/null
+/*
+ * tayga.h -- main header file
+ *
+ * part of TAYGA <http://www.litech.org/tayga/>
+ * Copyright (C) 2010 Nathan Lutchansky <lutchann@litech.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <poll.h>
+#include <fcntl.h>
+#include <syslog.h>
+#include <errno.h>
+#include <time.h>
+#include <linux/if.h>
+#include <linux/if_tun.h>
+#include <linux/if_ether.h>
+
+#include "list.h"
+#include "config.h"
+
+
+/* Configuration knobs */
+
+/* Number of seconds of silence before a map ages out of the cache */
+#define CACHE_MAX_AGE 120
+
+/* Number of seconds between cache ageing passes */
+#define CACHE_CHECK_INTERVAL 5
+
+/* Number of seconds between dynamic pool ageing passes */
+#define POOL_CHECK_INTERVAL 45
+
+/* Valid token delimiters in config file and dynamic map file */
+#define DELIM " \t\r\n"
+
+
+/* Protocol structures */
+
+struct ip4 {
+ uint8_t ver_ihl; /* 7-4: ver==4, 3-0: IHL */
+ uint8_t tos;
+ uint16_t length;
+ uint16_t ident;
+ uint16_t flags_offset; /* 15-13: flags, 12-0: frag offset */
+ uint8_t ttl;
+ uint8_t proto;
+ uint16_t cksum;
+ struct in_addr src;
+ struct in_addr dest;
+} __attribute__ ((__packed__));
+
+#define IP4_F_DF 0x4000
+#define IP4_F_MF 0x2000
+#define IP4_F_MASK 0x1fff
+
+struct ip6 {
+ uint32_t ver_tc_fl; /* 31-28: ver==6, 27-20: traf cl, 19-0: flow lbl */
+ uint16_t payload_length;
+ uint8_t next_header;
+ uint8_t hop_limit;
+ struct in6_addr src;
+ struct in6_addr dest;
+} __attribute__ ((__packed__));
+
+struct ip6_frag {
+ uint8_t next_header;
+ uint8_t reserved;
+ uint16_t offset_flags; /* 15-3: frag offset, 2-0: flags */
+ uint32_t ident;
+} __attribute__ ((__packed__));
+
+#define IP6_F_MF 0x0001
+#define IP6_F_MASK 0xfff8
+
+struct icmp {
+ uint8_t type;
+ uint8_t code;
+ uint16_t cksum;
+ uint32_t word;
+} __attribute__ ((__packed__));
+
+#define WKPF (htonl(0x0064ff9b))
+
+/* Adjusting the MTU by 20 does not leave room for the IP6 fragmentation
+ header, for fragments with the DF bit set. Follow up with BEHAVE on this.
+
+ (See http://www.ietf.org/mail-archive/web/behave/current/msg08499.html)
+ */
+#define MTU_ADJ 20
+
+
+/* TAYGA data definitions */
+
+struct pkt {
+ struct ip4 *ip4;
+ struct ip6 *ip6;
+ struct ip6_frag *ip6_frag;
+ struct icmp *icmp;
+ uint8_t data_proto;
+ uint8_t *data;
+ uint32_t data_len;
+ uint32_t header_len; /* inc IP hdr for v4 but excl IP hdr for v6 */
+};
+
+enum {
+ MAP_TYPE_STATIC,
+ MAP_TYPE_RFC6052,
+ MAP_TYPE_DYNAMIC_POOL,
+ MAP_TYPE_DYNAMIC_HOST,
+};
+
+struct map4 {
+ struct in_addr addr;
+ struct in_addr mask;
+ int prefix_len;
+ int type;
+ struct list_head list;
+};
+
+struct map6 {
+ struct in6_addr addr;
+ struct in6_addr mask;
+ int prefix_len;
+ int type;
+ struct list_head list;
+};
+
+struct map_static {
+ struct map4 map4;
+ struct map6 map6;
+ int conffile_lineno;
+};
+
+struct free_addr {
+ uint32_t addr; /* in-use address (host order) */
+ uint32_t count; /* num of free addresses after addr */
+ struct list_head list;
+};
+
+struct map_dynamic {
+ struct map4 map4;
+ struct map6 map6;
+ struct cache_entry *cache_entry;
+ time_t last_use;
+ struct list_head list;
+ struct free_addr free;
+};
+
+struct dynamic_pool {
+ struct map4 map4;
+ struct list_head mapped_list;
+ struct list_head dormant_list;
+ struct list_head free_list;
+ struct free_addr free_head;
+};
+
+struct cache_entry {
+ struct in6_addr addr6;
+ struct in_addr addr4;
+ time_t last_use;
+ uint32_t flags;
+ uint16_t ip4_ident;
+ struct list_head list;
+ struct list_head hash4;
+ struct list_head hash6;
+};
+
+#define CACHE_F_SEEN_4TO6 (1<<0)
+#define CACHE_F_SEEN_6TO4 (1<<1)
+#define CACHE_F_GEN_IDENT (1<<2)
+#define CACHE_F_REP_AGEOUT (1<<3)
+
+struct config {
+ char tundev[IFNAMSIZ];
+ char data_dir[512];
+ uint32_t recv_buf_size;
+ struct in_addr local_addr4;
+ struct in6_addr local_addr6;
+ struct list_head map4_list;
+ struct list_head map6_list;
+ int dyn_min_lease;
+ int dyn_max_lease;
+ int max_commit_delay;
+ struct dynamic_pool *dynamic_pool;
+ int hash_bits;
+ int cache_size;
+ int allow_ident_gen;
+ int ipv6_offlink_mtu;
+ int lazy_frag_hdr;
+
+ int urandom_fd;
+ int tun_fd;
+
+ uint16_t mtu;
+ uint8_t *recv_buf;
+
+ uint32_t rand[8];
+ struct list_head cache_pool;
+ struct list_head cache_active;
+ time_t last_cache_maint;
+ struct list_head *hash_table4;
+ struct list_head *hash_table6;
+
+ time_t last_dynamic_maint;
+ time_t last_map_write;
+ int map_write_pending;
+};
+
+
+/* Macros and static functions */
+
+/* Get a pointer to the object containing x, which is of type "type" and
+ * embeds x as a field called "field" */
+#define container_of(x, type, field) ({ \
+ const typeof( ((type *)0)->field ) *__mptr = (x); \
+ (type *)( (char *)__mptr - offsetof(type, field) );})
+
+#define IN6_IS_IN_NET(addr,net,mask) \
+ ((net)->s6_addr32[0] == ((addr)->s6_addr32[0] & \
+ (mask)->s6_addr32[0]) && \
+ (net)->s6_addr32[1] == ((addr)->s6_addr32[1] & \
+ (mask)->s6_addr32[1]) && \
+ (net)->s6_addr32[2] == ((addr)->s6_addr32[2] & \
+ (mask)->s6_addr32[2]) && \
+ (net)->s6_addr32[3] == ((addr)->s6_addr32[3] & \
+ (mask)->s6_addr32[3]))
+
+
+/* TAYGA function prototypes */
+
+/* addrmap.c */
+int validate_ip4_addr(const struct in_addr *a);
+int validate_ip6_addr(const struct in6_addr *a);
+int is_private_ip4_addr(const struct in_addr *a);
+int calc_ip4_mask(struct in_addr *mask, const struct in_addr *addr, int len);
+int calc_ip6_mask(struct in6_addr *mask, const struct in6_addr *addr, int len);
+void create_cache(void);
+int insert_map4(struct map4 *m, struct map4 **conflict);
+int insert_map6(struct map6 *m, struct map6 **conflict);
+struct map4 *find_map4(const struct in_addr *addr4);
+struct map6 *find_map6(const struct in6_addr *addr6);
+int append_to_prefix(struct in6_addr *addr6, const struct in_addr *addr4,
+ const struct in6_addr *prefix, int prefix_len);
+int map_ip4_to_ip6(struct in6_addr *addr6, const struct in_addr *addr4,
+ struct cache_entry **c_ptr);
+int map_ip6_to_ip4(struct in_addr *addr4, const struct in6_addr *addr6,
+ struct cache_entry **c_ptr, int dyn_alloc);
+void addrmap_maint(void);
+
+/* conffile.c */
+void read_config(char *conffile);
+
+/* dynamic.c */
+struct map6 *assign_dynamic(const struct in6_addr *addr6);
+void load_dynamic(struct dynamic_pool *pool);
+void dynamic_maint(struct dynamic_pool *pool, int shutdown);
+
+/* nat64.c */
+void handle_ip4(struct pkt *p);
+void handle_ip6(struct pkt *p);
+
+/* tayga.c */
+void slog(int priority, const char *format, ...);
+void read_random_bytes(void *d, int len);