1 /* -*- mode: C; c-file-style: "gnu" -*- */
2 /* dbus-sysdeps.c Wrappers around system/libc features (internal to D-BUS implementation)
4 * Copyright (C) 2002, 2003 Red Hat, Inc.
5 * Copyright (C) 2003 CodeFactory AB
7 * Licensed under the Academic Free License version 2.0
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include "dbus-internals.h"
26 #include "dbus-sysdeps.h"
27 #include "dbus-threads.h"
28 #include "dbus-test.h"
29 #include <sys/types.h>
37 #include <sys/socket.h>
46 #include <netinet/in.h>
65 #ifndef HAVE_SOCKLEN_T
70 * @addtogroup DBusInternalsUtils
74 * Aborts the program with SIGABRT (dumping core).
79 #ifdef DBUS_ENABLE_VERBOSE_MODE
81 s = _dbus_getenv ("DBUS_PRINT_BACKTRACE");
83 _dbus_print_backtrace ();
86 _exit (1); /* in case someone manages to ignore SIGABRT */
90 * Wrapper for setenv(). If the value is #NULL, unsets
91 * the environment variable.
93 * @todo if someone can verify it's safe, we could avoid the
94 * memleak when doing an unset.
96 * @param varname name of environment variable
97 * @param value value of environment variable
98 * @returns #TRUE on success.
101 _dbus_setenv (const char *varname,
104 _dbus_assert (varname != NULL);
115 len = strlen (varname);
117 /* Use system malloc to avoid memleaks that dbus_malloc
118 * will get upset about.
121 putenv_value = malloc (len + 1);
122 if (putenv_value == NULL)
125 strcpy (putenv_value, varname);
127 return (putenv (putenv_value) == 0);
133 return (setenv (varname, value, TRUE) == 0);
140 varname_len = strlen (varname);
141 value_len = strlen (value);
143 len = varname_len + value_len + 1 /* '=' */ ;
145 /* Use system malloc to avoid memleaks that dbus_malloc
146 * will get upset about.
149 putenv_value = malloc (len + 1);
150 if (putenv_value == NULL)
153 strcpy (putenv_value, varname);
154 strcpy (putenv_value + varname_len, "=");
155 strcpy (putenv_value + varname_len + 1, value);
157 return (putenv (putenv_value) == 0);
163 * Wrapper for getenv().
165 * @param varname name of environment variable
166 * @returns value of environment variable or #NULL if unset
169 _dbus_getenv (const char *varname)
171 return getenv (varname);
175 * Thin wrapper around the read() system call that appends
176 * the data it reads to the DBusString buffer. It appends
177 * up to the given count, and returns the same value
178 * and same errno as read(). The only exception is that
179 * _dbus_read() handles EINTR for you. _dbus_read() can
180 * return ENOMEM, even though regular UNIX read doesn't.
182 * @param fd the file descriptor to read from
183 * @param buffer the buffer to append data to
184 * @param count the amount of data to read
185 * @returns the number of bytes read or -1
196 _dbus_assert (count >= 0);
198 start = _dbus_string_get_length (buffer);
200 if (!_dbus_string_lengthen (buffer, count))
206 data = _dbus_string_get_data_len (buffer, start, count);
210 bytes_read = read (fd, data, count);
218 /* put length back (note that this doesn't actually realloc anything) */
219 _dbus_string_set_length (buffer, start);
225 /* put length back (doesn't actually realloc) */
226 _dbus_string_set_length (buffer, start + bytes_read);
230 _dbus_verbose_bytes_of_string (buffer, start, bytes_read);
238 * Thin wrapper around the write() system call that writes a part of a
239 * DBusString and handles EINTR for you.
241 * @param fd the file descriptor to write
242 * @param buffer the buffer to write data from
243 * @param start the first byte in the buffer to write
244 * @param len the number of bytes to try to write
245 * @returns the number of bytes written or -1 on error
249 const DBusString *buffer,
256 data = _dbus_string_get_const_data_len (buffer, start, len);
260 bytes_written = write (fd, data, len);
262 if (bytes_written < 0 && errno == EINTR)
266 if (bytes_written > 0)
267 _dbus_verbose_bytes_of_string (buffer, start, bytes_written);
270 return bytes_written;
274 * Like _dbus_write() but will use writev() if possible
275 * to write both buffers in sequence. The return value
276 * is the number of bytes written in the first buffer,
277 * plus the number written in the second. If the first
278 * buffer is written successfully and an error occurs
279 * writing the second, the number of bytes in the first
280 * is returned (i.e. the error is ignored), on systems that
281 * don't have writev. Handles EINTR for you.
282 * The second buffer may be #NULL.
284 * @param fd the file descriptor
285 * @param buffer1 first buffer
286 * @param start1 first byte to write in first buffer
287 * @param len1 number of bytes to write from first buffer
288 * @param buffer2 second buffer, or #NULL
289 * @param start2 first byte to write in second buffer
290 * @param len2 number of bytes to write in second buffer
291 * @returns total bytes written from both buffers, or -1 on error
294 _dbus_write_two (int fd,
295 const DBusString *buffer1,
298 const DBusString *buffer2,
302 _dbus_assert (buffer1 != NULL);
303 _dbus_assert (start1 >= 0);
304 _dbus_assert (start2 >= 0);
305 _dbus_assert (len1 >= 0);
306 _dbus_assert (len2 >= 0);
310 struct iovec vectors[2];
315 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
318 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
326 vectors[0].iov_base = (char*) data1;
327 vectors[0].iov_len = len1;
328 vectors[1].iov_base = (char*) data2;
329 vectors[1].iov_len = len2;
333 bytes_written = writev (fd,
337 if (bytes_written < 0 && errno == EINTR)
340 return bytes_written;
342 #else /* HAVE_WRITEV */
346 ret1 = _dbus_write (fd, buffer1, start1, len1);
347 if (ret1 == len1 && buffer2 != NULL)
349 ret2 = _dbus_write (fd, buffer2, start2, len2);
351 ret2 = 0; /* we can't report an error as the first write was OK */
358 #endif /* !HAVE_WRITEV */
361 #define _DBUS_MAX_SUN_PATH_LENGTH 99
364 * @def _DBUS_MAX_SUN_PATH_LENGTH
366 * Maximum length of the path to a UNIX domain socket,
367 * sockaddr_un::sun_path member. POSIX requires that all systems
368 * support at least 100 bytes here, including the nul termination.
369 * We use 99 for the max value to allow for the nul.
371 * We could probably also do sizeof (addr.sun_path)
372 * but this way we are the same on all platforms
373 * which is probably a good idea.
377 * Creates a socket and connects it to the UNIX domain socket at the
378 * given path. The connection fd is returned, and is set up as
381 * Uses abstract sockets instead of filesystem-linked sockets if
382 * requested (it's possible only on Linux; see "man 7 unix" on Linux).
383 * On non-Linux abstract socket usage always fails.
385 * @param path the path to UNIX domain socket
386 * @param abstract #TRUE to use abstract namespace
387 * @param error return location for error code
388 * @returns connection file descriptor or -1 on error
391 _dbus_connect_unix_socket (const char *path,
392 dbus_bool_t abstract,
396 struct sockaddr_un addr;
398 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
400 _dbus_verbose ("connecting to unix socket %s abstract=%d\n",
403 fd = socket (PF_UNIX, SOCK_STREAM, 0);
407 dbus_set_error (error,
408 _dbus_error_from_errno (errno),
409 "Failed to create socket: %s",
410 _dbus_strerror (errno));
416 addr.sun_family = AF_UNIX;
420 #ifdef HAVE_ABSTRACT_SOCKETS
421 /* remember that abstract names aren't nul-terminated so we rely
422 * on sun_path being filled in with zeroes above.
424 addr.sun_path[0] = '\0'; /* this is what says "use abstract" */
425 strncpy (&addr.sun_path[1], path, _DBUS_MAX_SUN_PATH_LENGTH - 2);
426 /* _dbus_verbose_bytes (addr.sun_path, sizeof (addr.sun_path)); */
427 #else /* HAVE_ABSTRACT_SOCKETS */
428 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED,
429 "Operating system does not support abstract socket namespace\n");
432 #endif /* ! HAVE_ABSTRACT_SOCKETS */
436 strncpy (addr.sun_path, path, _DBUS_MAX_SUN_PATH_LENGTH - 1);
439 if (connect (fd, (struct sockaddr*) &addr, sizeof (addr)) < 0)
441 dbus_set_error (error,
442 _dbus_error_from_errno (errno),
443 "Failed to connect to socket %s: %s",
444 path, _dbus_strerror (errno));
452 if (!_dbus_set_fd_nonblocking (fd, error))
454 _DBUS_ASSERT_ERROR_IS_SET (error);
466 * Creates a socket and binds it to the given path,
467 * then listens on the socket. The socket is
468 * set to be nonblocking.
470 * Uses abstract sockets instead of filesystem-linked
471 * sockets if requested (it's possible only on Linux;
472 * see "man 7 unix" on Linux).
473 * On non-Linux abstract socket usage always fails.
475 * @param path the socket name
476 * @param abstract #TRUE to use abstract namespace
477 * @param error return location for errors
478 * @returns the listening file descriptor or -1 on error
481 _dbus_listen_unix_socket (const char *path,
482 dbus_bool_t abstract,
486 struct sockaddr_un addr;
488 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
490 _dbus_verbose ("listening on unix socket %s abstract=%d\n",
493 listen_fd = socket (PF_UNIX, SOCK_STREAM, 0);
497 dbus_set_error (error, _dbus_error_from_errno (errno),
498 "Failed to create socket \"%s\": %s",
499 path, _dbus_strerror (errno));
504 addr.sun_family = AF_UNIX;
508 #ifdef HAVE_ABSTRACT_SOCKETS
509 /* remember that abstract names aren't nul-terminated so we rely
510 * on sun_path being filled in with zeroes above.
512 addr.sun_path[0] = '\0'; /* this is what says "use abstract" */
513 strncpy (&addr.sun_path[1], path, _DBUS_MAX_SUN_PATH_LENGTH - 2);
514 /* _dbus_verbose_bytes (addr.sun_path, sizeof (addr.sun_path)); */
515 #else /* HAVE_ABSTRACT_SOCKETS */
516 dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED,
517 "Operating system does not support abstract socket namespace\n");
520 #endif /* ! HAVE_ABSTRACT_SOCKETS */
524 /* FIXME discussed security implications of this with Nalin,
525 * and we couldn't think of where it would kick our ass, but
526 * it still seems a bit sucky. It also has non-security suckage;
527 * really we'd prefer to exit if the socket is already in use.
528 * But there doesn't seem to be a good way to do this.
530 * Just to be extra careful, I threw in the stat() - clearly
531 * the stat() can't *fix* any security issue, but it at least
532 * avoids inadvertent/accidental data loss.
537 if (stat (path, &sb) == 0 &&
538 S_ISSOCK (sb.st_mode))
542 strncpy (addr.sun_path, path, _DBUS_MAX_SUN_PATH_LENGTH - 1);
545 if (bind (listen_fd, (struct sockaddr*) &addr, sizeof (addr)) < 0)
547 dbus_set_error (error, _dbus_error_from_errno (errno),
548 "Failed to bind socket \"%s\": %s",
549 path, _dbus_strerror (errno));
554 if (listen (listen_fd, 30 /* backlog */) < 0)
556 dbus_set_error (error, _dbus_error_from_errno (errno),
557 "Failed to listen on socket \"%s\": %s",
558 path, _dbus_strerror (errno));
563 if (!_dbus_set_fd_nonblocking (listen_fd, error))
565 _DBUS_ASSERT_ERROR_IS_SET (error);
570 /* Try opening up the permissions, but if we can't, just go ahead
571 * and continue, maybe it will be good enough.
573 if (!abstract && chmod (path, 0777) < 0)
574 _dbus_warn ("Could not set mode 0777 on socket %s\n",
581 * Creates a socket and connects to a socket at the given host
582 * and port. The connection fd is returned, and is set up as
585 * @param host the host name to connect to
586 * @param port the prot to connect to
587 * @param error return location for error code
588 * @returns connection file descriptor or -1 on error
591 _dbus_connect_tcp_socket (const char *host,
596 struct sockaddr_in addr;
598 struct in_addr *haddr;
600 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
602 fd = socket (AF_INET, SOCK_STREAM, 0);
606 dbus_set_error (error,
607 _dbus_error_from_errno (errno),
608 "Failed to create socket: %s",
609 _dbus_strerror (errno));
617 he = gethostbyname (host);
620 dbus_set_error (error,
621 _dbus_error_from_errno (errno),
622 "Failed to lookup hostname: %s",
627 haddr = ((struct in_addr *) (he->h_addr_list)[0]);
630 memcpy (&addr.sin_addr, haddr, sizeof(struct in_addr));
631 addr.sin_family = AF_INET;
632 addr.sin_port = htons (port);
634 if (connect (fd, (struct sockaddr*) &addr, sizeof (addr)) < 0)
636 dbus_set_error (error,
637 _dbus_error_from_errno (errno),
638 "Failed to connect to socket %s: %s:%d",
639 host, _dbus_strerror (errno), port);
647 if (!_dbus_set_fd_nonblocking (fd, error))
659 * Creates a socket and binds it to the given path,
660 * then listens on the socket. The socket is
661 * set to be nonblocking.
663 * @param host the host name to listen on
664 * @param port the prot to listen on
665 * @param error return location for errors
666 * @returns the listening file descriptor or -1 on error
669 _dbus_listen_tcp_socket (const char *host,
674 struct sockaddr_in addr;
676 struct in_addr *haddr;
678 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
680 listen_fd = socket (AF_INET, SOCK_STREAM, 0);
684 dbus_set_error (error, _dbus_error_from_errno (errno),
685 "Failed to create socket \"%s:%d\": %s",
686 host, port, _dbus_strerror (errno));
693 he = gethostbyname (host);
696 dbus_set_error (error,
697 _dbus_error_from_errno (errno),
698 "Failed to lookup hostname: %s",
703 haddr = ((struct in_addr *) (he->h_addr_list)[0]);
706 memcpy (&addr.sin_addr, haddr, sizeof (struct in_addr));
707 addr.sin_family = AF_INET;
708 addr.sin_port = htons (port);
710 if (bind (listen_fd, (struct sockaddr*) &addr, sizeof (struct sockaddr)))
712 dbus_set_error (error, _dbus_error_from_errno (errno),
713 "Failed to bind socket \"%s:%d\": %s",
714 host, port, _dbus_strerror (errno));
719 if (listen (listen_fd, 30 /* backlog */) < 0)
721 dbus_set_error (error, _dbus_error_from_errno (errno),
722 "Failed to listen on socket \"%s:%d\": %s",
723 host, port, _dbus_strerror (errno));
728 if (!_dbus_set_fd_nonblocking (listen_fd, error))
738 write_credentials_byte (int server_fd,
742 char buf[1] = { '\0' };
744 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
748 bytes_written = write (server_fd, buf, 1);
750 if (bytes_written < 0 && errno == EINTR)
753 if (bytes_written < 0)
755 dbus_set_error (error, _dbus_error_from_errno (errno),
756 "Failed to write credentials byte: %s",
757 _dbus_strerror (errno));
760 else if (bytes_written == 0)
762 dbus_set_error (error, DBUS_ERROR_IO_ERROR,
763 "wrote zero bytes writing credentials byte");
768 _dbus_assert (bytes_written == 1);
769 _dbus_verbose ("wrote credentials byte\n");
775 * Reads a single byte which must be nul (an error occurs otherwise),
776 * and reads unix credentials if available. Fills in pid/uid/gid with
777 * -1 if no credentials are available. Return value indicates whether
778 * a byte was read, not whether we got valid credentials. On some
779 * systems, such as Linux, reading/writing the byte isn't actually
780 * required, but we do it anyway just to avoid multiple codepaths.
782 * Fails if no byte is available, so you must select() first.
784 * The point of the byte is that on some systems we have to
785 * use sendmsg()/recvmsg() to transmit credentials.
787 * @param client_fd the client file descriptor
788 * @param credentials struct to fill with credentials of client
789 * @param error location to store error code
790 * @returns #TRUE on success
793 _dbus_read_credentials_unix_socket (int client_fd,
794 DBusCredentials *credentials,
802 char cmsgmem[CMSG_SPACE (sizeof (struct cmsgcred))];
803 struct cmsghdr *cmsg = (struct cmsghdr *) cmsgmem;
806 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
808 /* The POSIX spec certainly doesn't promise this, but
809 * we need these assertions to fail as soon as we're wrong about
810 * it so we can do the porting fixups
812 _dbus_assert (sizeof (pid_t) <= sizeof (credentials->pid));
813 _dbus_assert (sizeof (uid_t) <= sizeof (credentials->uid));
814 _dbus_assert (sizeof (gid_t) <= sizeof (credentials->gid));
816 _dbus_credentials_clear (credentials);
818 #if defined(LOCAL_CREDS) && defined(HAVE_CMSGCRED)
819 /* Set the socket to receive credentials on the next message */
822 if (setsockopt (client_fd, 0, LOCAL_CREDS, &on, sizeof (on)) < 0)
824 _dbus_verbose ("Unable to set LOCAL_CREDS socket option\n");
833 memset (&msg, 0, sizeof (msg));
838 memset (cmsgmem, 0, sizeof (cmsgmem));
839 msg.msg_control = cmsgmem;
840 msg.msg_controllen = sizeof (cmsgmem);
844 if (recvmsg (client_fd, &msg, 0) < 0)
849 dbus_set_error (error, _dbus_error_from_errno (errno),
850 "Failed to read credentials byte: %s",
851 _dbus_strerror (errno));
857 dbus_set_error (error, DBUS_ERROR_FAILED,
858 "Credentials byte was not nul");
863 if (cmsg->cmsg_len < sizeof (cmsgmem) || cmsg->cmsg_type != SCM_CREDS)
865 dbus_set_error (error, DBUS_ERROR_FAILED);
866 _dbus_verbose ("Message from recvmsg() was not SCM_CREDS\n");
871 _dbus_verbose ("read credentials byte\n");
876 int cr_len = sizeof (cr);
878 if (getsockopt (client_fd, SOL_SOCKET, SO_PEERCRED, &cr, &cr_len) == 0 &&
879 cr_len == sizeof (cr))
881 credentials->pid = cr.pid;
882 credentials->uid = cr.uid;
883 credentials->gid = cr.gid;
887 _dbus_verbose ("Failed to getsockopt() credentials, returned len %d/%d: %s\n",
888 cr_len, (int) sizeof (cr), _dbus_strerror (errno));
890 #elif defined(HAVE_CMSGCRED)
891 struct cmsgcred *cred;
893 cred = (struct cmsgcred *) CMSG_DATA (cmsg);
895 credentials->pid = cred->cmcred_pid;
896 credentials->uid = cred->cmcred_euid;
897 credentials->gid = cred->cmcred_groups[0];
898 #else /* !SO_PEERCRED && !HAVE_CMSGCRED */
899 _dbus_verbose ("Socket credentials not supported on this OS\n");
903 _dbus_verbose ("Credentials:"
904 " pid "DBUS_PID_FORMAT
905 " uid "DBUS_UID_FORMAT
906 " gid "DBUS_GID_FORMAT"\n",
915 * Sends a single nul byte with our UNIX credentials as ancillary
916 * data. Returns #TRUE if the data was successfully written. On
917 * systems that don't support sending credentials, just writes a byte,
918 * doesn't send any credentials. On some systems, such as Linux,
919 * reading/writing the byte isn't actually required, but we do it
920 * anyway just to avoid multiple codepaths.
922 * Fails if no byte can be written, so you must select() first.
924 * The point of the byte is that on some systems we have to
925 * use sendmsg()/recvmsg() to transmit credentials.
927 * @param server_fd file descriptor for connection to server
928 * @param error return location for error code
929 * @returns #TRUE if the byte was sent
932 _dbus_send_credentials_unix_socket (int server_fd,
935 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
937 if (write_credentials_byte (server_fd, error))
944 * Accepts a connection on a listening socket.
945 * Handles EINTR for you.
947 * @param listen_fd the listen file descriptor
948 * @returns the connection fd of the client, or -1 on error
951 _dbus_accept (int listen_fd)
954 struct sockaddr addr;
957 addrlen = sizeof (addr);
960 client_fd = accept (listen_fd, &addr, &addrlen);
974 * @addtogroup DBusString
979 * Appends an integer to a DBusString.
981 * @param str the string
982 * @param value the integer value
983 * @returns #FALSE if not enough memory or other failure.
986 _dbus_string_append_int (DBusString *str,
989 /* this calculation is from comp.lang.c faq */
990 #define MAX_LONG_LEN ((sizeof (long) * 8 + 2) / 3 + 1) /* +1 for '-' */
995 orig_len = _dbus_string_get_length (str);
997 if (!_dbus_string_lengthen (str, MAX_LONG_LEN))
1000 buf = _dbus_string_get_data_len (str, orig_len, MAX_LONG_LEN);
1002 snprintf (buf, MAX_LONG_LEN, "%ld", value);
1011 _dbus_string_shorten (str, MAX_LONG_LEN - i);
1017 * Appends an unsigned integer to a DBusString.
1019 * @param str the string
1020 * @param value the integer value
1021 * @returns #FALSE if not enough memory or other failure.
1024 _dbus_string_append_uint (DBusString *str,
1025 unsigned long value)
1027 /* this is wrong, but definitely on the high side. */
1028 #define MAX_ULONG_LEN (MAX_LONG_LEN * 2)
1033 orig_len = _dbus_string_get_length (str);
1035 if (!_dbus_string_lengthen (str, MAX_ULONG_LEN))
1038 buf = _dbus_string_get_data_len (str, orig_len, MAX_ULONG_LEN);
1040 snprintf (buf, MAX_ULONG_LEN, "%lu", value);
1049 _dbus_string_shorten (str, MAX_ULONG_LEN - i);
1055 * Appends a double to a DBusString.
1057 * @param str the string
1058 * @param value the floating point value
1059 * @returns #FALSE if not enough memory or other failure.
1062 _dbus_string_append_double (DBusString *str,
1065 #define MAX_DOUBLE_LEN 64 /* this is completely made up :-/ */
1070 orig_len = _dbus_string_get_length (str);
1072 if (!_dbus_string_lengthen (str, MAX_DOUBLE_LEN))
1075 buf = _dbus_string_get_data_len (str, orig_len, MAX_DOUBLE_LEN);
1077 snprintf (buf, MAX_LONG_LEN, "%g", value);
1086 _dbus_string_shorten (str, MAX_DOUBLE_LEN - i);
1092 * Parses an integer contained in a DBusString. Either return parameter
1093 * may be #NULL if you aren't interested in it. The integer is parsed
1094 * and stored in value_return. Return parameters are not initialized
1095 * if the function returns #FALSE.
1097 * @param str the string
1098 * @param start the byte index of the start of the integer
1099 * @param value_return return location of the integer value or #NULL
1100 * @param end_return return location of the end of the integer, or #NULL
1101 * @returns #TRUE on success
1104 _dbus_string_parse_int (const DBusString *str,
1113 p = _dbus_string_get_const_data_len (str, start,
1114 _dbus_string_get_length (str) - start);
1118 v = strtol (p, &end, 0);
1119 if (end == NULL || end == p || errno != 0)
1125 *end_return = start + (end - p);
1130 #ifdef DBUS_BUILD_TESTS
1131 /* Not currently used, so only built when tests are enabled */
1133 * Parses an unsigned integer contained in a DBusString. Either return
1134 * parameter may be #NULL if you aren't interested in it. The integer
1135 * is parsed and stored in value_return. Return parameters are not
1136 * initialized if the function returns #FALSE.
1138 * @param str the string
1139 * @param start the byte index of the start of the integer
1140 * @param value_return return location of the integer value or #NULL
1141 * @param end_return return location of the end of the integer, or #NULL
1142 * @returns #TRUE on success
1145 _dbus_string_parse_uint (const DBusString *str,
1147 unsigned long *value_return,
1154 p = _dbus_string_get_const_data_len (str, start,
1155 _dbus_string_get_length (str) - start);
1159 v = strtoul (p, &end, 0);
1160 if (end == NULL || end == p || errno != 0)
1166 *end_return = start + (end - p);
1170 #endif /* DBUS_BUILD_TESTS */
1173 ascii_isspace (char c)
1184 ascii_isdigit (char c)
1186 return c >= '0' && c <= '9';
1190 ascii_isxdigit (char c)
1192 return (ascii_isdigit (c) ||
1193 (c >= 'a' && c <= 'f') ||
1194 (c >= 'A' && c <= 'F'));
1198 /* Calls strtod in a locale-independent fashion, by looking at
1199 * the locale data and patching the decimal comma to a point.
1201 * Relicensed from glib.
1204 ascii_strtod (const char *nptr,
1209 struct lconv *locale_data;
1210 const char *decimal_point;
1211 int decimal_point_len;
1212 const char *p, *decimal_point_pos;
1213 const char *end = NULL; /* Silence gcc */
1217 locale_data = localeconv ();
1218 decimal_point = locale_data->decimal_point;
1219 decimal_point_len = strlen (decimal_point);
1221 _dbus_assert (decimal_point_len != 0);
1223 decimal_point_pos = NULL;
1224 if (decimal_point[0] != '.' ||
1225 decimal_point[1] != 0)
1228 /* Skip leading space */
1229 while (ascii_isspace (*p))
1232 /* Skip leading optional sign */
1233 if (*p == '+' || *p == '-')
1237 (p[1] == 'x' || p[1] == 'X'))
1240 /* HEX - find the (optional) decimal point */
1242 while (ascii_isxdigit (*p))
1247 decimal_point_pos = p++;
1249 while (ascii_isxdigit (*p))
1252 if (*p == 'p' || *p == 'P')
1254 if (*p == '+' || *p == '-')
1256 while (ascii_isdigit (*p))
1263 while (ascii_isdigit (*p))
1268 decimal_point_pos = p++;
1270 while (ascii_isdigit (*p))
1273 if (*p == 'e' || *p == 'E')
1275 if (*p == '+' || *p == '-')
1277 while (ascii_isdigit (*p))
1282 /* For the other cases, we need not convert the decimal point */
1285 /* Set errno to zero, so that we can distinguish zero results
1289 if (decimal_point_pos)
1293 /* We need to convert the '.' to the locale specific decimal point */
1294 copy = dbus_malloc (end - nptr + 1 + decimal_point_len);
1297 memcpy (c, nptr, decimal_point_pos - nptr);
1298 c += decimal_point_pos - nptr;
1299 memcpy (c, decimal_point, decimal_point_len);
1300 c += decimal_point_len;
1301 memcpy (c, decimal_point_pos + 1, end - (decimal_point_pos + 1));
1302 c += end - (decimal_point_pos + 1);
1305 val = strtod (copy, &fail_pos);
1309 if (fail_pos > decimal_point_pos)
1310 fail_pos = (char *)nptr + (fail_pos - copy) - (decimal_point_len - 1);
1312 fail_pos = (char *)nptr + (fail_pos - copy);
1319 val = strtod (nptr, &fail_pos);
1329 * Parses a floating point number contained in a DBusString. Either
1330 * return parameter may be #NULL if you aren't interested in it. The
1331 * integer is parsed and stored in value_return. Return parameters are
1332 * not initialized if the function returns #FALSE.
1334 * @param str the string
1335 * @param start the byte index of the start of the float
1336 * @param value_return return location of the float value or #NULL
1337 * @param end_return return location of the end of the float, or #NULL
1338 * @returns #TRUE on success
1341 _dbus_string_parse_double (const DBusString *str,
1343 double *value_return,
1350 p = _dbus_string_get_const_data_len (str, start,
1351 _dbus_string_get_length (str) - start);
1355 v = ascii_strtod (p, &end);
1356 if (end == NULL || end == p || errno != 0)
1362 *end_return = start + (end - p);
1367 /** @} */ /* DBusString group */
1370 * @addtogroup DBusInternalsUtils
1374 fill_user_info_from_passwd (struct passwd *p,
1378 _dbus_assert (p->pw_name != NULL);
1379 _dbus_assert (p->pw_dir != NULL);
1381 info->uid = p->pw_uid;
1382 info->primary_gid = p->pw_gid;
1383 info->username = _dbus_strdup (p->pw_name);
1384 info->homedir = _dbus_strdup (p->pw_dir);
1386 if (info->username == NULL ||
1387 info->homedir == NULL)
1389 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1397 fill_user_info (DBusUserInfo *info,
1399 const DBusString *username,
1402 const char *username_c;
1404 /* exactly one of username/uid provided */
1405 _dbus_assert (username != NULL || uid != DBUS_UID_UNSET);
1406 _dbus_assert (username == NULL || uid == DBUS_UID_UNSET);
1408 info->uid = DBUS_UID_UNSET;
1409 info->primary_gid = DBUS_GID_UNSET;
1410 info->group_ids = NULL;
1411 info->n_group_ids = 0;
1412 info->username = NULL;
1413 info->homedir = NULL;
1415 if (username != NULL)
1416 username_c = _dbus_string_get_const_data (username);
1420 /* For now assuming that the getpwnam() and getpwuid() flavors
1421 * are always symmetrical, if not we have to add more configure
1425 #if defined (HAVE_POSIX_GETPWNAME_R) || defined (HAVE_NONPOSIX_GETPWNAME_R)
1430 struct passwd p_str;
1433 #ifdef HAVE_POSIX_GETPWNAME_R
1435 result = getpwuid_r (uid, &p_str, buf, sizeof (buf),
1438 result = getpwnam_r (username_c, &p_str, buf, sizeof (buf),
1441 if (uid != DBUS_UID_UNSET)
1442 p = getpwuid_r (uid, &p_str, buf, sizeof (buf));
1444 p = getpwnam_r (username_c, &p_str, buf, sizeof (buf));
1446 #endif /* !HAVE_POSIX_GETPWNAME_R */
1447 if (result == 0 && p == &p_str)
1449 if (!fill_user_info_from_passwd (p, info, error))
1454 dbus_set_error (error, _dbus_error_from_errno (errno),
1455 "User \"%s\" unknown or no memory to allocate password entry\n",
1456 username_c ? username_c : "???");
1457 _dbus_verbose ("User %s unknown\n", username_c ? username_c : "???");
1461 #else /* ! HAVE_GETPWNAM_R */
1463 /* I guess we're screwed on thread safety here */
1466 if (uid != DBUS_UID_UNSET)
1469 p = getpwnam (username_c);
1473 if (!fill_user_info_from_passwd (p, info, error))
1478 dbus_set_error (error, _dbus_error_from_errno (errno),
1479 "User \"%s\" unknown or no memory to allocate password entry\n",
1480 username_c ? username_c : "???");
1481 _dbus_verbose ("User %s unknown\n", username_c ? username_c : "???");
1485 #endif /* ! HAVE_GETPWNAM_R */
1487 /* Fill this in so we can use it to get groups */
1488 username_c = info->username;
1490 #ifdef HAVE_GETGROUPLIST
1497 buf = dbus_new (gid_t, buf_count);
1500 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1504 if (getgrouplist (username_c,
1506 buf, &buf_count) < 0)
1508 gid_t *new = dbus_realloc (buf, buf_count * sizeof (buf[0]));
1511 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1519 if (getgrouplist (username_c, info->primary_gid, buf, &buf_count) < 0)
1521 dbus_set_error (error,
1522 _dbus_error_from_errno (errno),
1523 "Failed to get groups for username \"%s\" primary GID "
1524 DBUS_GID_FORMAT ": %s\n",
1525 username_c, info->primary_gid,
1526 _dbus_strerror (errno));
1532 info->group_ids = dbus_new (dbus_gid_t, buf_count);
1533 if (info->group_ids == NULL)
1535 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1540 for (i = 0; i < buf_count; ++i)
1541 info->group_ids[i] = buf[i];
1543 info->n_group_ids = buf_count;
1547 #else /* HAVE_GETGROUPLIST */
1549 /* We just get the one group ID */
1550 info->group_ids = dbus_new (dbus_gid_t, 1);
1551 if (info->group_ids == NULL)
1553 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1557 info->n_group_ids = 1;
1559 (info->group_ids)[0] = info->primary_gid;
1561 #endif /* HAVE_GETGROUPLIST */
1563 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1568 _DBUS_ASSERT_ERROR_IS_SET (error);
1569 _dbus_user_info_free (info);
1574 * Gets user info for the given username.
1576 * @param info user info object to initialize
1577 * @param username the username
1578 * @param error error return
1579 * @returns #TRUE on success
1582 _dbus_user_info_fill (DBusUserInfo *info,
1583 const DBusString *username,
1586 return fill_user_info (info, DBUS_UID_UNSET,
1591 * Gets user info for the given user ID.
1593 * @param info user info object to initialize
1594 * @param uid the user ID
1595 * @param error error return
1596 * @returns #TRUE on success
1599 _dbus_user_info_fill_uid (DBusUserInfo *info,
1603 return fill_user_info (info, uid,
1608 * Frees the members of info
1609 * (but not info itself)
1610 * @param info the user info struct
1613 _dbus_user_info_free (DBusUserInfo *info)
1615 dbus_free (info->group_ids);
1616 dbus_free (info->username);
1617 dbus_free (info->homedir);
1621 fill_user_info_from_group (struct group *g,
1622 DBusGroupInfo *info,
1625 _dbus_assert (g->gr_name != NULL);
1627 info->gid = g->gr_gid;
1628 info->groupname = _dbus_strdup (g->gr_name);
1630 /* info->members = dbus_strdupv (g->gr_mem) */
1632 if (info->groupname == NULL)
1634 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1642 fill_group_info (DBusGroupInfo *info,
1644 const DBusString *groupname,
1647 const char *group_c_str;
1649 _dbus_assert (groupname != NULL || gid != DBUS_GID_UNSET);
1650 _dbus_assert (groupname == NULL || gid == DBUS_GID_UNSET);
1653 group_c_str = _dbus_string_get_const_data (groupname);
1657 /* For now assuming that the getgrnam() and getgrgid() flavors
1658 * always correspond to the pwnam flavors, if not we have
1659 * to add more configure checks.
1662 #if defined (HAVE_POSIX_GETPWNAME_R) || defined (HAVE_NONPOSIX_GETPWNAME_R)
1670 #ifdef HAVE_POSIX_GETPWNAME_R
1673 result = getgrnam_r (group_c_str, &g_str, buf, sizeof (buf),
1676 result = getgrgid_r (gid, &g_str, buf, sizeof (buf),
1679 p = getgrnam_r (group_c_str, &g_str, buf, sizeof (buf));
1681 #endif /* !HAVE_POSIX_GETPWNAME_R */
1682 if (result == 0 && g == &g_str)
1684 return fill_user_info_from_group (g, info, error);
1688 dbus_set_error (error, _dbus_error_from_errno (errno),
1689 "Group %s unknown or failed to look it up\n",
1690 group_c_str ? group_c_str : "???");
1694 #else /* ! HAVE_GETPWNAM_R */
1696 /* I guess we're screwed on thread safety here */
1699 g = getgrnam (group_c_str);
1703 return fill_user_info_from_group (g, info, error);
1707 dbus_set_error (error, _dbus_error_from_errno (errno),
1708 "Group %s unknown or failed to look it up\n",
1709 group_c_str ? group_c_str : "???");
1713 #endif /* ! HAVE_GETPWNAM_R */
1717 * Initializes the given DBusGroupInfo struct
1718 * with information about the given group name.
1720 * @param info the group info struct
1721 * @param groupname name of group
1722 * @param error the error return
1723 * @returns #FALSE if error is set
1726 _dbus_group_info_fill (DBusGroupInfo *info,
1727 const DBusString *groupname,
1730 return fill_group_info (info, DBUS_GID_UNSET,
1736 * Initializes the given DBusGroupInfo struct
1737 * with information about the given group ID.
1739 * @param info the group info struct
1740 * @param gid group ID
1741 * @param error the error return
1742 * @returns #FALSE if error is set
1745 _dbus_group_info_fill_gid (DBusGroupInfo *info,
1749 return fill_group_info (info, gid, NULL, error);
1753 * Frees the members of info (but not info itself).
1755 * @param info the group info
1758 _dbus_group_info_free (DBusGroupInfo *info)
1760 dbus_free (info->groupname);
1764 * Sets fields in DBusCredentials to DBUS_PID_UNSET,
1765 * DBUS_UID_UNSET, DBUS_GID_UNSET.
1767 * @param credentials the credentials object to fill in
1770 _dbus_credentials_clear (DBusCredentials *credentials)
1772 credentials->pid = DBUS_PID_UNSET;
1773 credentials->uid = DBUS_UID_UNSET;
1774 credentials->gid = DBUS_GID_UNSET;
1778 * Gets the credentials of the current process.
1780 * @param credentials credentials to fill in.
1783 _dbus_credentials_from_current_process (DBusCredentials *credentials)
1785 /* The POSIX spec certainly doesn't promise this, but
1786 * we need these assertions to fail as soon as we're wrong about
1787 * it so we can do the porting fixups
1789 _dbus_assert (sizeof (pid_t) <= sizeof (credentials->pid));
1790 _dbus_assert (sizeof (uid_t) <= sizeof (credentials->uid));
1791 _dbus_assert (sizeof (gid_t) <= sizeof (credentials->gid));
1793 credentials->pid = getpid ();
1794 credentials->uid = getuid ();
1795 credentials->gid = getgid ();
1799 * Checks whether the provided_credentials are allowed to log in
1800 * as the expected_credentials.
1802 * @param expected_credentials credentials we're trying to log in as
1803 * @param provided_credentials credentials we have
1804 * @returns #TRUE if we can log in
1807 _dbus_credentials_match (const DBusCredentials *expected_credentials,
1808 const DBusCredentials *provided_credentials)
1810 if (provided_credentials->uid == DBUS_UID_UNSET)
1812 else if (expected_credentials->uid == DBUS_UID_UNSET)
1814 else if (provided_credentials->uid == 0)
1816 else if (provided_credentials->uid == expected_credentials->uid)
1823 * Gets our process ID
1824 * @returns process ID
1833 * @returns process UID
1842 * @returns process GID
1850 _DBUS_DEFINE_GLOBAL_LOCK (atomic);
1852 #ifdef DBUS_USE_ATOMIC_INT_486
1853 /* Taken from CVS version 1.7 of glibc's sysdeps/i386/i486/atomicity.h */
1854 /* Since the asm stuff here is gcc-specific we go ahead and use "inline" also */
1855 static inline dbus_int32_t
1856 atomic_exchange_and_add (DBusAtomic *atomic,
1857 volatile dbus_int32_t val)
1859 register dbus_int32_t result;
1861 __asm__ __volatile__ ("lock; xaddl %0,%1"
1862 : "=r" (result), "=m" (atomic->value)
1863 : "0" (val), "m" (atomic->value));
1869 * Atomically increments an integer
1871 * @param atomic pointer to the integer to increment
1872 * @returns the value before incrementing
1874 * @todo implement arch-specific faster atomic ops
1877 _dbus_atomic_inc (DBusAtomic *atomic)
1879 #ifdef DBUS_USE_ATOMIC_INT_486
1880 return atomic_exchange_and_add (atomic, 1);
1883 _DBUS_LOCK (atomic);
1884 res = atomic->value;
1886 _DBUS_UNLOCK (atomic);
1892 * Atomically decrement an integer
1894 * @param atomic pointer to the integer to decrement
1895 * @returns the value before decrementing
1897 * @todo implement arch-specific faster atomic ops
1900 _dbus_atomic_dec (DBusAtomic *atomic)
1902 #ifdef DBUS_USE_ATOMIC_INT_486
1903 return atomic_exchange_and_add (atomic, -1);
1907 _DBUS_LOCK (atomic);
1908 res = atomic->value;
1910 _DBUS_UNLOCK (atomic);
1916 * Wrapper for poll().
1918 * @todo need a fallback implementation using select()
1920 * @param fds the file descriptors to poll
1921 * @param n_fds number of descriptors in the array
1922 * @param timeout_milliseconds timeout or -1 for infinite
1923 * @returns numbers of fds with revents, or <0 on error
1926 _dbus_poll (DBusPollFD *fds,
1928 int timeout_milliseconds)
1931 /* This big thing is a constant expression and should get optimized
1932 * out of existence. So it's more robust than a configure check at
1935 if (_DBUS_POLLIN == POLLIN &&
1936 _DBUS_POLLPRI == POLLPRI &&
1937 _DBUS_POLLOUT == POLLOUT &&
1938 _DBUS_POLLERR == POLLERR &&
1939 _DBUS_POLLHUP == POLLHUP &&
1940 _DBUS_POLLNVAL == POLLNVAL &&
1941 sizeof (DBusPollFD) == sizeof (struct pollfd) &&
1942 _DBUS_STRUCT_OFFSET (DBusPollFD, fd) ==
1943 _DBUS_STRUCT_OFFSET (struct pollfd, fd) &&
1944 _DBUS_STRUCT_OFFSET (DBusPollFD, events) ==
1945 _DBUS_STRUCT_OFFSET (struct pollfd, events) &&
1946 _DBUS_STRUCT_OFFSET (DBusPollFD, revents) ==
1947 _DBUS_STRUCT_OFFSET (struct pollfd, revents))
1949 return poll ((struct pollfd*) fds,
1951 timeout_milliseconds);
1955 /* We have to convert the DBusPollFD to an array of
1956 * struct pollfd, poll, and convert back.
1958 _dbus_warn ("didn't implement poll() properly for this system yet\n");
1961 #else /* ! HAVE_POLL */
1963 fd_set read_set, write_set, err_set;
1969 FD_ZERO (&read_set);
1970 FD_ZERO (&write_set);
1973 for (i = 0; i < n_fds; i++)
1975 DBusPollFD f = fds[i];
1977 if (f.events & _DBUS_POLLIN)
1978 FD_SET (f.fd, &read_set);
1980 if (f.events & _DBUS_POLLOUT)
1981 FD_SET (f.fd, &write_set);
1983 FD_SET (f.fd, &err_set);
1985 max_fd = MAX (max_fd, f.fd);
1988 tv.tv_sec = timeout_milliseconds / 1000;
1989 tv.tv_usec = (timeout_milliseconds % 1000) * 1000;
1991 ready = select (max_fd + 1, &read_set, &write_set, &err_set, &tv);
1995 for (i = 0; i < n_fds; i++)
1997 DBusPollFD f = fds[i];
2001 if (FD_ISSET (f.fd, &read_set))
2002 f.revents |= _DBUS_POLLIN;
2004 if (FD_ISSET (f.fd, &write_set))
2005 f.revents |= _DBUS_POLLOUT;
2007 if (FD_ISSET (f.fd, &err_set))
2008 f.revents |= _DBUS_POLLERR;
2016 /** nanoseconds in a second */
2017 #define NANOSECONDS_PER_SECOND 1000000000
2018 /** microseconds in a second */
2019 #define MICROSECONDS_PER_SECOND 1000000
2020 /** milliseconds in a second */
2021 #define MILLISECONDS_PER_SECOND 1000
2022 /** nanoseconds in a millisecond */
2023 #define NANOSECONDS_PER_MILLISECOND 1000000
2024 /** microseconds in a millisecond */
2025 #define MICROSECONDS_PER_MILLISECOND 1000
2028 * Sleeps the given number of milliseconds.
2029 * @param milliseconds number of milliseconds
2032 _dbus_sleep_milliseconds (int milliseconds)
2034 #ifdef HAVE_NANOSLEEP
2035 struct timespec req;
2036 struct timespec rem;
2038 req.tv_sec = milliseconds / MILLISECONDS_PER_SECOND;
2039 req.tv_nsec = (milliseconds % MILLISECONDS_PER_SECOND) * NANOSECONDS_PER_MILLISECOND;
2043 while (nanosleep (&req, &rem) < 0 && errno == EINTR)
2045 #elif defined (HAVE_USLEEP)
2046 usleep (milliseconds * MICROSECONDS_PER_MILLISECOND);
2047 #else /* ! HAVE_USLEEP */
2048 sleep (MAX (milliseconds / 1000, 1));
2053 * Get current time, as in gettimeofday().
2055 * @param tv_sec return location for number of seconds
2056 * @param tv_usec return location for number of microseconds (thousandths)
2059 _dbus_get_current_time (long *tv_sec,
2064 gettimeofday (&t, NULL);
2069 *tv_usec = t.tv_usec;
2073 * Appends the contents of the given file to the string,
2074 * returning error code. At the moment, won't open a file
2075 * more than a megabyte in size.
2077 * @param str the string to append to
2078 * @param filename filename to load
2079 * @param error place to set an error
2080 * @returns #FALSE if error was set
2083 _dbus_file_get_contents (DBusString *str,
2084 const DBusString *filename,
2091 const char *filename_c;
2093 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2095 filename_c = _dbus_string_get_const_data (filename);
2097 /* O_BINARY useful on Cygwin */
2098 fd = open (filename_c, O_RDONLY | O_BINARY);
2101 dbus_set_error (error, _dbus_error_from_errno (errno),
2102 "Failed to open \"%s\": %s",
2104 _dbus_strerror (errno));
2108 if (fstat (fd, &sb) < 0)
2110 dbus_set_error (error, _dbus_error_from_errno (errno),
2111 "Failed to stat \"%s\": %s",
2113 _dbus_strerror (errno));
2115 _dbus_verbose ("fstat() failed: %s",
2116 _dbus_strerror (errno));
2123 if (sb.st_size > _DBUS_ONE_MEGABYTE)
2125 dbus_set_error (error, DBUS_ERROR_FAILED,
2126 "File size %lu of \"%s\" is too large.",
2127 filename_c, (unsigned long) sb.st_size);
2133 orig_len = _dbus_string_get_length (str);
2134 if (sb.st_size > 0 && S_ISREG (sb.st_mode))
2138 while (total < (int) sb.st_size)
2140 bytes_read = _dbus_read (fd, str,
2141 sb.st_size - total);
2142 if (bytes_read <= 0)
2144 dbus_set_error (error, _dbus_error_from_errno (errno),
2145 "Error reading \"%s\": %s",
2147 _dbus_strerror (errno));
2149 _dbus_verbose ("read() failed: %s",
2150 _dbus_strerror (errno));
2153 _dbus_string_set_length (str, orig_len);
2157 total += bytes_read;
2163 else if (sb.st_size != 0)
2165 _dbus_verbose ("Can only open regular files at the moment.\n");
2166 dbus_set_error (error, DBUS_ERROR_FAILED,
2167 "\"%s\" is not a regular file",
2180 * Writes a string out to a file. If the file exists,
2181 * it will be atomically overwritten by the new data.
2183 * @param str the string to write out
2184 * @param filename the file to save string to
2185 * @param error error to be filled in on failure
2186 * @returns #FALSE on failure
2189 _dbus_string_save_to_file (const DBusString *str,
2190 const DBusString *filename,
2195 const char *filename_c;
2196 DBusString tmp_filename;
2197 const char *tmp_filename_c;
2199 dbus_bool_t need_unlink;
2202 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2206 need_unlink = FALSE;
2208 if (!_dbus_string_init (&tmp_filename))
2210 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
2214 if (!_dbus_string_copy (filename, 0, &tmp_filename, 0))
2216 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
2217 _dbus_string_free (&tmp_filename);
2221 if (!_dbus_string_append (&tmp_filename, "."))
2223 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
2224 _dbus_string_free (&tmp_filename);
2228 #define N_TMP_FILENAME_RANDOM_BYTES 8
2229 if (!_dbus_generate_random_ascii (&tmp_filename, N_TMP_FILENAME_RANDOM_BYTES))
2231 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
2232 _dbus_string_free (&tmp_filename);
2236 filename_c = _dbus_string_get_const_data (filename);
2237 tmp_filename_c = _dbus_string_get_const_data (&tmp_filename);
2239 fd = open (tmp_filename_c, O_WRONLY | O_BINARY | O_EXCL | O_CREAT,
2243 dbus_set_error (error, _dbus_error_from_errno (errno),
2244 "Could not create %s: %s", tmp_filename_c,
2245 _dbus_strerror (errno));
2252 bytes_to_write = _dbus_string_get_length (str);
2254 while (total < bytes_to_write)
2258 bytes_written = _dbus_write (fd, str, total,
2259 bytes_to_write - total);
2261 if (bytes_written <= 0)
2263 dbus_set_error (error, _dbus_error_from_errno (errno),
2264 "Could not write to %s: %s", tmp_filename_c,
2265 _dbus_strerror (errno));
2270 total += bytes_written;
2275 dbus_set_error (error, _dbus_error_from_errno (errno),
2276 "Could not close file %s: %s",
2277 tmp_filename_c, _dbus_strerror (errno));
2284 if (rename (tmp_filename_c, filename_c) < 0)
2286 dbus_set_error (error, _dbus_error_from_errno (errno),
2287 "Could not rename %s to %s: %s",
2288 tmp_filename_c, filename_c,
2289 _dbus_strerror (errno));
2294 need_unlink = FALSE;
2299 /* close first, then unlink, to prevent ".nfs34234235" garbage
2306 if (need_unlink && unlink (tmp_filename_c) < 0)
2307 _dbus_verbose ("Failed to unlink temp file %s: %s\n",
2308 tmp_filename_c, _dbus_strerror (errno));
2310 _dbus_string_free (&tmp_filename);
2313 _DBUS_ASSERT_ERROR_IS_SET (error);
2318 /** Creates the given file, failing if the file already exists.
2320 * @param filename the filename
2321 * @param error error location
2322 * @returns #TRUE if we created the file and it didn't exist
2325 _dbus_create_file_exclusively (const DBusString *filename,
2329 const char *filename_c;
2331 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2333 filename_c = _dbus_string_get_const_data (filename);
2335 fd = open (filename_c, O_WRONLY | O_BINARY | O_EXCL | O_CREAT,
2339 dbus_set_error (error,
2341 "Could not create file %s: %s\n",
2343 _dbus_strerror (errno));
2349 dbus_set_error (error,
2351 "Could not close file %s: %s\n",
2353 _dbus_strerror (errno));
2361 * Deletes the given file.
2363 * @param filename the filename
2364 * @param error error location
2366 * @returns #TRUE if unlink() succeeded
2369 _dbus_delete_file (const DBusString *filename,
2372 const char *filename_c;
2374 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2376 filename_c = _dbus_string_get_const_data (filename);
2378 if (unlink (filename_c) < 0)
2380 dbus_set_error (error, DBUS_ERROR_FAILED,
2381 "Failed to delete file %s: %s\n",
2382 filename_c, _dbus_strerror (errno));
2390 * Creates a directory; succeeds if the directory
2391 * is created or already existed.
2393 * @param filename directory filename
2394 * @param error initialized error object
2395 * @returns #TRUE on success
2398 _dbus_create_directory (const DBusString *filename,
2401 const char *filename_c;
2403 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2405 filename_c = _dbus_string_get_const_data (filename);
2407 if (mkdir (filename_c, 0700) < 0)
2409 if (errno == EEXIST)
2412 dbus_set_error (error, DBUS_ERROR_FAILED,
2413 "Failed to create directory %s: %s\n",
2414 filename_c, _dbus_strerror (errno));
2422 * Appends the given filename to the given directory.
2424 * @todo it might be cute to collapse multiple '/' such as "foo//"
2427 * @param dir the directory name
2428 * @param next_component the filename
2429 * @returns #TRUE on success
2432 _dbus_concat_dir_and_file (DBusString *dir,
2433 const DBusString *next_component)
2435 dbus_bool_t dir_ends_in_slash;
2436 dbus_bool_t file_starts_with_slash;
2438 if (_dbus_string_get_length (dir) == 0 ||
2439 _dbus_string_get_length (next_component) == 0)
2442 dir_ends_in_slash = '/' == _dbus_string_get_byte (dir,
2443 _dbus_string_get_length (dir) - 1);
2445 file_starts_with_slash = '/' == _dbus_string_get_byte (next_component, 0);
2447 if (dir_ends_in_slash && file_starts_with_slash)
2449 _dbus_string_shorten (dir, 1);
2451 else if (!(dir_ends_in_slash || file_starts_with_slash))
2453 if (!_dbus_string_append_byte (dir, '/'))
2457 return _dbus_string_copy (next_component, 0, dir,
2458 _dbus_string_get_length (dir));
2462 * Get the directory name from a complete filename
2463 * @param filename the filename
2464 * @param dirname string to append directory name to
2465 * @returns #FALSE if no memory
2468 _dbus_string_get_dirname (const DBusString *filename,
2469 DBusString *dirname)
2473 _dbus_assert (filename != dirname);
2474 _dbus_assert (filename != NULL);
2475 _dbus_assert (dirname != NULL);
2477 /* Ignore any separators on the end */
2478 sep = _dbus_string_get_length (filename);
2480 return _dbus_string_append (dirname, "."); /* empty string passed in */
2482 while (sep > 0 && _dbus_string_get_byte (filename, sep - 1) == '/')
2485 _dbus_assert (sep >= 0);
2488 return _dbus_string_append (dirname, "/");
2490 /* Now find the previous separator */
2491 _dbus_string_find_byte_backward (filename, sep, '/', &sep);
2493 return _dbus_string_append (dirname, ".");
2495 /* skip multiple separators */
2496 while (sep > 0 && _dbus_string_get_byte (filename, sep - 1) == '/')
2499 _dbus_assert (sep >= 0);
2502 _dbus_string_get_byte (filename, 0) == '/')
2503 return _dbus_string_append (dirname, "/");
2505 return _dbus_string_copy_len (filename, 0, sep - 0,
2506 dirname, _dbus_string_get_length (dirname));
2510 * Checks whether the filename is an absolute path
2512 * @param filename the filename
2513 * @returns #TRUE if an absolute path
2516 _dbus_path_is_absolute (const DBusString *filename)
2518 if (_dbus_string_get_length (filename) > 0)
2519 return _dbus_string_get_byte (filename, 0) == '/';
2525 * Internals of directory iterator
2529 DIR *d; /**< The DIR* from opendir() */
2534 * Open a directory to iterate over.
2536 * @param filename the directory name
2537 * @param error exception return object or #NULL
2538 * @returns new iterator, or #NULL on error
2541 _dbus_directory_open (const DBusString *filename,
2546 const char *filename_c;
2548 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2550 filename_c = _dbus_string_get_const_data (filename);
2552 d = opendir (filename_c);
2555 dbus_set_error (error, _dbus_error_from_errno (errno),
2556 "Failed to read directory \"%s\": %s",
2558 _dbus_strerror (errno));
2561 iter = dbus_new0 (DBusDirIter, 1);
2565 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
2566 "Could not allocate memory for directory iterator");
2576 * Get next file in the directory. Will not return "." or ".." on
2577 * UNIX. If an error occurs, the contents of "filename" are
2578 * undefined. The error is never set if the function succeeds.
2580 * @todo for thread safety, I think we have to use
2581 * readdir_r(). (GLib has the same issue, should file a bug.)
2583 * @param iter the iterator
2584 * @param filename string to be set to the next file in the dir
2585 * @param error return location for error
2586 * @returns #TRUE if filename was filled in with a new filename
2589 _dbus_directory_get_next_file (DBusDirIter *iter,
2590 DBusString *filename,
2595 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2599 ent = readdir (iter->d);
2603 dbus_set_error (error,
2604 _dbus_error_from_errno (errno),
2605 "%s", _dbus_strerror (errno));
2608 else if (ent->d_name[0] == '.' &&
2609 (ent->d_name[1] == '\0' ||
2610 (ent->d_name[1] == '.' && ent->d_name[2] == '\0')))
2614 _dbus_string_set_length (filename, 0);
2615 if (!_dbus_string_append (filename, ent->d_name))
2617 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
2618 "No memory to read directory entry");
2627 * Closes a directory iteration.
2630 _dbus_directory_close (DBusDirIter *iter)
2637 pseudorandom_generate_random_bytes (DBusString *str,
2641 unsigned long tv_usec;
2644 old_len = _dbus_string_get_length (str);
2646 /* fall back to pseudorandom */
2647 _dbus_verbose ("Falling back to pseudorandom for %d bytes\n",
2650 _dbus_get_current_time (NULL, &tv_usec);
2660 b = (r / (double) RAND_MAX) * 255.0;
2662 if (!_dbus_string_append_byte (str, b))
2671 _dbus_string_set_length (str, old_len);
2676 * Generates the given number of random bytes,
2677 * using the best mechanism we can come up with.
2679 * @param str the string
2680 * @param n_bytes the number of random bytes to append to string
2681 * @returns #TRUE on success, #FALSE if no memory
2684 _dbus_generate_random_bytes (DBusString *str,
2690 /* FALSE return means "no memory", if it could
2691 * mean something else then we'd need to return
2692 * a DBusError. So we always fall back to pseudorandom
2696 old_len = _dbus_string_get_length (str);
2699 /* note, urandom on linux will fall back to pseudorandom */
2700 fd = open ("/dev/urandom", O_RDONLY);
2702 return pseudorandom_generate_random_bytes (str, n_bytes);
2704 if (_dbus_read (fd, str, n_bytes) != n_bytes)
2707 _dbus_string_set_length (str, old_len);
2708 return pseudorandom_generate_random_bytes (str, n_bytes);
2711 _dbus_verbose ("Read %d bytes from /dev/urandom\n",
2720 * Generates the given number of random bytes, where the bytes are
2721 * chosen from the alphanumeric ASCII subset.
2723 * @param str the string
2724 * @param n_bytes the number of random ASCII bytes to append to string
2725 * @returns #TRUE on success, #FALSE if no memory or other failure
2728 _dbus_generate_random_ascii (DBusString *str,
2731 static const char letters[] =
2732 "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz";
2736 if (!_dbus_generate_random_bytes (str, n_bytes))
2739 len = _dbus_string_get_length (str);
2743 _dbus_string_set_byte (str, i,
2744 letters[_dbus_string_get_byte (str, i) %
2745 (sizeof (letters) - 1)]);
2750 _dbus_assert (_dbus_string_validate_ascii (str, len - n_bytes,
2757 * A wrapper around strerror() because some platforms
2758 * may be lame and not have strerror().
2760 * @param error_number errno.
2761 * @returns error description.
2764 _dbus_strerror (int error_number)
2768 msg = strerror (error_number);
2776 * signal (SIGPIPE, SIG_IGN);
2779 _dbus_disable_sigpipe (void)
2781 signal (SIGPIPE, SIG_IGN);
2785 * Sets the file descriptor to be close
2786 * on exec. Should be called for all file
2787 * descriptors in D-BUS code.
2789 * @param fd the file descriptor
2792 _dbus_fd_set_close_on_exec (int fd)
2796 val = fcntl (fd, F_GETFD, 0);
2803 fcntl (fd, F_SETFD, val);
2807 * Converts a UNIX errno into a #DBusError name.
2809 * @todo should cover more errnos, specifically those
2812 * @param error_number the errno.
2813 * @returns an error name
2816 _dbus_error_from_errno (int error_number)
2818 switch (error_number)
2821 return DBUS_ERROR_FAILED;
2823 #ifdef EPROTONOSUPPORT
2824 case EPROTONOSUPPORT:
2825 return DBUS_ERROR_NOT_SUPPORTED;
2829 return DBUS_ERROR_NOT_SUPPORTED;
2833 return DBUS_ERROR_LIMITS_EXCEEDED; /* kernel out of memory */
2837 return DBUS_ERROR_LIMITS_EXCEEDED;
2841 return DBUS_ERROR_ACCESS_DENIED;
2845 return DBUS_ERROR_ACCESS_DENIED;
2849 return DBUS_ERROR_NO_MEMORY;
2853 return DBUS_ERROR_NO_MEMORY;
2857 return DBUS_ERROR_FAILED;
2861 return DBUS_ERROR_FAILED;
2865 return DBUS_ERROR_FAILED;
2869 return DBUS_ERROR_FAILED;
2873 return DBUS_ERROR_FAILED;
2877 return DBUS_ERROR_NO_SERVER;
2881 return DBUS_ERROR_TIMEOUT;
2885 return DBUS_ERROR_NO_NETWORK;
2889 return DBUS_ERROR_ADDRESS_IN_USE;
2893 return DBUS_ERROR_FILE_NOT_FOUND;
2897 return DBUS_ERROR_FILE_NOT_FOUND;
2901 return DBUS_ERROR_FAILED;
2905 * Exit the process, returning the given value.
2907 * @param code the exit code
2910 _dbus_exit (int code)
2918 * @param filename the filename to stat
2919 * @param statbuf the stat info to fill in
2920 * @param error return location for error
2921 * @returns #FALSE if error was set
2924 _dbus_stat (const DBusString *filename,
2928 const char *filename_c;
2931 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2933 filename_c = _dbus_string_get_const_data (filename);
2935 if (stat (filename_c, &sb) < 0)
2937 dbus_set_error (error, _dbus_error_from_errno (errno),
2938 "%s", _dbus_strerror (errno));
2942 statbuf->mode = sb.st_mode;
2943 statbuf->nlink = sb.st_nlink;
2944 statbuf->uid = sb.st_uid;
2945 statbuf->gid = sb.st_gid;
2946 statbuf->size = sb.st_size;
2947 statbuf->atime = sb.st_atime;
2948 statbuf->mtime = sb.st_mtime;
2949 statbuf->ctime = sb.st_ctime;
2955 * Creates a full-duplex pipe (as in socketpair()).
2956 * Sets both ends of the pipe nonblocking.
2958 * @param fd1 return location for one end
2959 * @param fd2 return location for the other end
2960 * @param blocking #TRUE if pipe should be blocking
2961 * @param error error return
2962 * @returns #FALSE on failure (if error is set)
2965 _dbus_full_duplex_pipe (int *fd1,
2967 dbus_bool_t blocking,
2970 #ifdef HAVE_SOCKETPAIR
2973 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2975 if (socketpair (AF_UNIX, SOCK_STREAM, 0, fds) < 0)
2977 dbus_set_error (error, _dbus_error_from_errno (errno),
2978 "Could not create full-duplex pipe");
2983 (!_dbus_set_fd_nonblocking (fds[0], NULL) ||
2984 !_dbus_set_fd_nonblocking (fds[1], NULL)))
2986 dbus_set_error (error, _dbus_error_from_errno (errno),
2987 "Could not set full-duplex pipe nonblocking");
3000 _dbus_warn ("_dbus_full_duplex_pipe() not implemented on this OS\n");
3001 dbus_set_error (error, DBUS_ERROR_FAILED,
3002 "_dbus_full_duplex_pipe() not implemented on this OS");
3008 * Closes a file descriptor.
3010 * @param fd the file descriptor
3011 * @param error error object
3012 * @returns #FALSE if error set
3015 _dbus_close (int fd,
3018 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3026 dbus_set_error (error, _dbus_error_from_errno (errno),
3027 "Could not close fd %d", fd);
3035 * Sets a file descriptor to be nonblocking.
3037 * @param fd the file descriptor.
3038 * @param error address of error location.
3039 * @returns #TRUE on success.
3042 _dbus_set_fd_nonblocking (int fd,
3047 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3049 val = fcntl (fd, F_GETFL, 0);
3052 dbus_set_error (error, _dbus_error_from_errno (errno),
3053 "Failed to get flags from file descriptor %d: %s",
3054 fd, _dbus_strerror (errno));
3055 _dbus_verbose ("Failed to get flags for fd %d: %s\n", fd,
3056 _dbus_strerror (errno));
3060 if (fcntl (fd, F_SETFL, val | O_NONBLOCK) < 0)
3062 dbus_set_error (error, _dbus_error_from_errno (errno),
3063 "Failed to set nonblocking flag of file descriptor %d: %s",
3064 fd, _dbus_strerror (errno));
3065 _dbus_verbose ("Failed to set fd %d nonblocking: %s\n",
3066 fd, _dbus_strerror (errno));
3075 * On GNU libc systems, print a crude backtrace to the verbose log.
3076 * On other systems, print "no backtrace support"
3080 _dbus_print_backtrace (void)
3082 #if defined (HAVE_BACKTRACE) && defined (DBUS_ENABLE_VERBOSE_MODE)
3088 bt_size = backtrace (bt, 500);
3090 syms = backtrace_symbols (bt, bt_size);
3095 _dbus_verbose (" %s\n", syms[i]);
3101 _dbus_verbose (" D-BUS not compiled with backtrace support\n");
3106 * Does the chdir, fork, setsid, etc. to become a daemon process.
3108 * @param pidfile #NULL, or pidfile to create
3109 * @param error return location for errors
3110 * @returns #FALSE on failure
3113 _dbus_become_daemon (const DBusString *pidfile,
3120 _dbus_verbose ("Becoming a daemon...\n");
3122 _dbus_verbose ("chdir to /\n");
3123 if (chdir ("/") < 0)
3125 dbus_set_error (error, DBUS_ERROR_FAILED,
3126 "Could not chdir() to root directory");
3130 _dbus_verbose ("forking...\n");
3131 switch ((child_pid = fork ()))
3134 _dbus_verbose ("fork failed\n");
3135 dbus_set_error (error, _dbus_error_from_errno (errno),
3136 "Failed to fork daemon: %s", _dbus_strerror (errno));
3141 _dbus_verbose ("in child, closing std file descriptors\n");
3143 /* silently ignore failures here, if someone
3144 * doesn't have /dev/null we may as well try
3145 * to continue anyhow
3148 dev_null_fd = open ("/dev/null", O_RDWR);
3149 if (dev_null_fd >= 0)
3151 dup2 (dev_null_fd, 0);
3152 dup2 (dev_null_fd, 1);
3154 s = _dbus_getenv ("DBUS_DEBUG_OUTPUT");
3155 if (s == NULL || *s == '\0')
3156 dup2 (dev_null_fd, 2);
3158 _dbus_verbose ("keeping stderr open due to DBUS_DEBUG_OUTPUT\n");
3161 /* Get a predictable umask */
3162 _dbus_verbose ("setting umask\n");
3169 _dbus_verbose ("parent writing pid file\n");
3170 if (!_dbus_write_pid_file (pidfile,
3174 _dbus_verbose ("pid file write failed, killing child\n");
3175 kill (child_pid, SIGTERM);
3179 _dbus_verbose ("parent exiting\n");
3184 _dbus_verbose ("calling setsid()\n");
3185 if (setsid () == -1)
3186 _dbus_assert_not_reached ("setsid() failed");
3192 * Creates a file containing the process ID.
3194 * @param filename the filename to write to
3195 * @param pid our process ID
3196 * @param error return location for errors
3197 * @returns #FALSE on failure
3200 _dbus_write_pid_file (const DBusString *filename,
3204 const char *cfilename;
3208 cfilename = _dbus_string_get_const_data (filename);
3210 fd = open (cfilename, O_WRONLY|O_CREAT|O_EXCL|O_BINARY, 0644);
3214 dbus_set_error (error, _dbus_error_from_errno (errno),
3215 "Failed to open \"%s\": %s", cfilename,
3216 _dbus_strerror (errno));
3220 if ((f = fdopen (fd, "w")) == NULL)
3222 dbus_set_error (error, _dbus_error_from_errno (errno),
3223 "Failed to fdopen fd %d: %s", fd, _dbus_strerror (errno));
3228 if (fprintf (f, "%lu\n", pid) < 0)
3230 dbus_set_error (error, _dbus_error_from_errno (errno),
3231 "Failed to write to \"%s\": %s", cfilename,
3232 _dbus_strerror (errno));
3236 if (fclose (f) == EOF)
3238 dbus_set_error (error, _dbus_error_from_errno (errno),
3239 "Failed to close \"%s\": %s", cfilename,
3240 _dbus_strerror (errno));
3248 * Changes the user and group the bus is running as.
3250 * @param uid the new user ID
3251 * @param gid the new group ID
3252 * @param error return location for errors
3253 * @returns #FALSE on failure
3256 _dbus_change_identity (dbus_uid_t uid,
3260 /* Set GID first, or the setuid may remove our permission
3263 if (setgid (gid) < 0)
3265 dbus_set_error (error, _dbus_error_from_errno (errno),
3266 "Failed to set GID to %lu: %s", gid,
3267 _dbus_strerror (errno));
3271 if (setuid (uid) < 0)
3273 dbus_set_error (error, _dbus_error_from_errno (errno),
3274 "Failed to set UID to %lu: %s", uid,
3275 _dbus_strerror (errno));
3282 /** Installs a UNIX signal handler
3284 * @param sig the signal to handle
3285 * @param handler the handler
3288 _dbus_set_signal_handler (int sig,
3289 DBusSignalHandler handler)
3291 struct sigaction act;
3292 sigset_t empty_mask;
3294 sigemptyset (&empty_mask);
3295 act.sa_handler = handler;
3296 act.sa_mask = empty_mask;
3298 sigaction (sig, &act, 0);
3302 #ifdef DBUS_BUILD_TESTS
3305 check_dirname (const char *filename,
3306 const char *dirname)
3310 _dbus_string_init_const (&f, filename);
3312 if (!_dbus_string_init (&d))
3313 _dbus_assert_not_reached ("no memory");
3315 if (!_dbus_string_get_dirname (&f, &d))
3316 _dbus_assert_not_reached ("no memory");
3318 if (!_dbus_string_equal_c_str (&d, dirname))
3320 _dbus_warn ("For filename \"%s\" got dirname \"%s\" and expected \"%s\"\n",
3322 _dbus_string_get_const_data (&d),
3327 _dbus_string_free (&d);
3331 check_path_absolute (const char *path,
3332 dbus_bool_t expected)
3336 _dbus_string_init_const (&p, path);
3338 if (_dbus_path_is_absolute (&p) != expected)
3340 _dbus_warn ("For path \"%s\" expected absolute = %d got %d\n",
3341 path, expected, _dbus_path_is_absolute (&p));
3347 * Unit test for dbus-sysdeps.c.
3349 * @returns #TRUE on success.
3352 _dbus_sysdeps_test (void)
3358 check_dirname ("foo", ".");
3359 check_dirname ("foo/bar", "foo");
3360 check_dirname ("foo//bar", "foo");
3361 check_dirname ("foo///bar", "foo");
3362 check_dirname ("foo/bar/", "foo");
3363 check_dirname ("foo//bar/", "foo");
3364 check_dirname ("foo///bar/", "foo");
3365 check_dirname ("foo/bar//", "foo");
3366 check_dirname ("foo//bar////", "foo");
3367 check_dirname ("foo///bar///////", "foo");
3368 check_dirname ("/foo", "/");
3369 check_dirname ("////foo", "/");
3370 check_dirname ("/foo/bar", "/foo");
3371 check_dirname ("/foo//bar", "/foo");
3372 check_dirname ("/foo///bar", "/foo");
3373 check_dirname ("/", "/");
3374 check_dirname ("///", "/");
3375 check_dirname ("", ".");
3378 _dbus_string_init_const (&str, "3.5");
3379 if (!_dbus_string_parse_double (&str,
3382 _dbus_warn ("Failed to parse double");
3387 _dbus_warn ("Failed to parse 3.5 correctly, got: %f", val);
3392 _dbus_warn ("_dbus_string_parse_double of \"3.5\" returned wrong position %d", pos);
3396 _dbus_string_init_const (&str, "0xff");
3397 if (!_dbus_string_parse_double (&str,
3400 _dbus_warn ("Failed to parse double");
3405 _dbus_warn ("Failed to parse 0xff correctly, got: %f", val);
3410 _dbus_warn ("_dbus_string_parse_double of \"0xff\" returned wrong position %d", pos);
3414 check_path_absolute ("/", TRUE);
3415 check_path_absolute ("/foo", TRUE);
3416 check_path_absolute ("", FALSE);
3417 check_path_absolute ("foo", FALSE);
3418 check_path_absolute ("foo/bar", FALSE);
3422 #endif /* DBUS_BUILD_TESTS */
3424 /** @} end of sysdeps */