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));
690 he = gethostbyname (host);
693 dbus_set_error (error,
694 _dbus_error_from_errno (errno),
695 "Failed to lookup hostname: %s",
700 haddr = ((struct in_addr *) (he->h_addr_list)[0]);
703 memcpy (&addr.sin_addr, haddr, sizeof (struct in_addr));
704 addr.sin_family = AF_INET;
705 addr.sin_port = htons (port);
707 if (bind (listen_fd, (struct sockaddr*) &addr, sizeof (struct sockaddr)))
709 dbus_set_error (error, _dbus_error_from_errno (errno),
710 "Failed to bind socket \"%s:%d\": %s",
711 host, port, _dbus_strerror (errno));
716 if (listen (listen_fd, 30 /* backlog */) < 0)
718 dbus_set_error (error, _dbus_error_from_errno (errno),
719 "Failed to listen on socket \"%s:%d\": %s",
720 host, port, _dbus_strerror (errno));
725 if (!_dbus_set_fd_nonblocking (listen_fd, error))
735 write_credentials_byte (int server_fd,
739 char buf[1] = { '\0' };
741 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
745 bytes_written = write (server_fd, buf, 1);
747 if (bytes_written < 0 && errno == EINTR)
750 if (bytes_written < 0)
752 dbus_set_error (error, _dbus_error_from_errno (errno),
753 "Failed to write credentials byte: %s",
754 _dbus_strerror (errno));
757 else if (bytes_written == 0)
759 dbus_set_error (error, DBUS_ERROR_IO_ERROR,
760 "wrote zero bytes writing credentials byte");
765 _dbus_assert (bytes_written == 1);
766 _dbus_verbose ("wrote credentials byte\n");
772 * Reads a single byte which must be nul (an error occurs otherwise),
773 * and reads unix credentials if available. Fills in pid/uid/gid with
774 * -1 if no credentials are available. Return value indicates whether
775 * a byte was read, not whether we got valid credentials. On some
776 * systems, such as Linux, reading/writing the byte isn't actually
777 * required, but we do it anyway just to avoid multiple codepaths.
779 * Fails if no byte is available, so you must select() first.
781 * The point of the byte is that on some systems we have to
782 * use sendmsg()/recvmsg() to transmit credentials.
784 * @param client_fd the client file descriptor
785 * @param credentials struct to fill with credentials of client
786 * @param error location to store error code
787 * @returns #TRUE on success
790 _dbus_read_credentials_unix_socket (int client_fd,
791 DBusCredentials *credentials,
799 char cmsgmem[CMSG_SPACE (sizeof (struct cmsgcred))];
800 struct cmsghdr *cmsg = (struct cmsghdr *) cmsgmem;
803 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
805 /* The POSIX spec certainly doesn't promise this, but
806 * we need these assertions to fail as soon as we're wrong about
807 * it so we can do the porting fixups
809 _dbus_assert (sizeof (pid_t) <= sizeof (credentials->pid));
810 _dbus_assert (sizeof (uid_t) <= sizeof (credentials->uid));
811 _dbus_assert (sizeof (gid_t) <= sizeof (credentials->gid));
813 _dbus_credentials_clear (credentials);
815 #if defined(LOCAL_CREDS) && defined(HAVE_CMSGCRED)
816 /* Set the socket to receive credentials on the next message */
819 if (setsockopt (client_fd, 0, LOCAL_CREDS, &on, sizeof (on)) < 0)
821 _dbus_verbose ("Unable to set LOCAL_CREDS socket option\n");
830 memset (&msg, 0, sizeof (msg));
835 memset (cmsgmem, 0, sizeof (cmsgmem));
836 msg.msg_control = cmsgmem;
837 msg.msg_controllen = sizeof (cmsgmem);
841 if (recvmsg (client_fd, &msg, 0) < 0)
846 dbus_set_error (error, _dbus_error_from_errno (errno),
847 "Failed to read credentials byte: %s",
848 _dbus_strerror (errno));
854 dbus_set_error (error, DBUS_ERROR_FAILED,
855 "Credentials byte was not nul");
860 if (cmsg->cmsg_len < sizeof (cmsgmem) || cmsg->cmsg_type != SCM_CREDS)
862 dbus_set_error (error, DBUS_ERROR_FAILED);
863 _dbus_verbose ("Message from recvmsg() was not SCM_CREDS\n");
868 _dbus_verbose ("read credentials byte\n");
873 int cr_len = sizeof (cr);
875 if (getsockopt (client_fd, SOL_SOCKET, SO_PEERCRED, &cr, &cr_len) == 0 &&
876 cr_len == sizeof (cr))
878 credentials->pid = cr.pid;
879 credentials->uid = cr.uid;
880 credentials->gid = cr.gid;
884 _dbus_verbose ("Failed to getsockopt() credentials, returned len %d/%d: %s\n",
885 cr_len, (int) sizeof (cr), _dbus_strerror (errno));
887 #elif defined(HAVE_CMSGCRED)
888 struct cmsgcred *cred;
890 cred = (struct cmsgcred *) CMSG_DATA (cmsg);
892 credentials->pid = cred->cmcred_pid;
893 credentials->uid = cred->cmcred_euid;
894 credentials->gid = cred->cmcred_groups[0];
895 #else /* !SO_PEERCRED && !HAVE_CMSGCRED */
896 _dbus_verbose ("Socket credentials not supported on this OS\n");
900 _dbus_verbose ("Credentials:"
901 " pid "DBUS_PID_FORMAT
902 " uid "DBUS_UID_FORMAT
903 " gid "DBUS_GID_FORMAT"\n",
912 * Sends a single nul byte with our UNIX credentials as ancillary
913 * data. Returns #TRUE if the data was successfully written. On
914 * systems that don't support sending credentials, just writes a byte,
915 * doesn't send any credentials. On some systems, such as Linux,
916 * reading/writing the byte isn't actually required, but we do it
917 * anyway just to avoid multiple codepaths.
919 * Fails if no byte can be written, so you must select() first.
921 * The point of the byte is that on some systems we have to
922 * use sendmsg()/recvmsg() to transmit credentials.
924 * @param server_fd file descriptor for connection to server
925 * @param error return location for error code
926 * @returns #TRUE if the byte was sent
929 _dbus_send_credentials_unix_socket (int server_fd,
932 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
934 if (write_credentials_byte (server_fd, error))
941 * Accepts a connection on a listening socket.
942 * Handles EINTR for you.
944 * @param listen_fd the listen file descriptor
945 * @returns the connection fd of the client, or -1 on error
948 _dbus_accept (int listen_fd)
951 struct sockaddr addr;
954 addrlen = sizeof (addr);
957 client_fd = accept (listen_fd, &addr, &addrlen);
971 * @addtogroup DBusString
976 * Appends an integer to a DBusString.
978 * @param str the string
979 * @param value the integer value
980 * @returns #FALSE if not enough memory or other failure.
983 _dbus_string_append_int (DBusString *str,
986 /* this calculation is from comp.lang.c faq */
987 #define MAX_LONG_LEN ((sizeof (long) * 8 + 2) / 3 + 1) /* +1 for '-' */
992 orig_len = _dbus_string_get_length (str);
994 if (!_dbus_string_lengthen (str, MAX_LONG_LEN))
997 buf = _dbus_string_get_data_len (str, orig_len, MAX_LONG_LEN);
999 snprintf (buf, MAX_LONG_LEN, "%ld", value);
1008 _dbus_string_shorten (str, MAX_LONG_LEN - i);
1014 * Appends an unsigned integer to a DBusString.
1016 * @param str the string
1017 * @param value the integer value
1018 * @returns #FALSE if not enough memory or other failure.
1021 _dbus_string_append_uint (DBusString *str,
1022 unsigned long value)
1024 /* this is wrong, but definitely on the high side. */
1025 #define MAX_ULONG_LEN (MAX_LONG_LEN * 2)
1030 orig_len = _dbus_string_get_length (str);
1032 if (!_dbus_string_lengthen (str, MAX_ULONG_LEN))
1035 buf = _dbus_string_get_data_len (str, orig_len, MAX_ULONG_LEN);
1037 snprintf (buf, MAX_ULONG_LEN, "%lu", value);
1046 _dbus_string_shorten (str, MAX_ULONG_LEN - i);
1052 * Appends a double to a DBusString.
1054 * @param str the string
1055 * @param value the floating point value
1056 * @returns #FALSE if not enough memory or other failure.
1059 _dbus_string_append_double (DBusString *str,
1062 #define MAX_DOUBLE_LEN 64 /* this is completely made up :-/ */
1067 orig_len = _dbus_string_get_length (str);
1069 if (!_dbus_string_lengthen (str, MAX_DOUBLE_LEN))
1072 buf = _dbus_string_get_data_len (str, orig_len, MAX_DOUBLE_LEN);
1074 snprintf (buf, MAX_LONG_LEN, "%g", value);
1083 _dbus_string_shorten (str, MAX_DOUBLE_LEN - i);
1089 * Parses an integer contained in a DBusString. Either return parameter
1090 * may be #NULL if you aren't interested in it. The integer is parsed
1091 * and stored in value_return. Return parameters are not initialized
1092 * if the function returns #FALSE.
1094 * @param str the string
1095 * @param start the byte index of the start of the integer
1096 * @param value_return return location of the integer value or #NULL
1097 * @param end_return return location of the end of the integer, or #NULL
1098 * @returns #TRUE on success
1101 _dbus_string_parse_int (const DBusString *str,
1110 p = _dbus_string_get_const_data_len (str, start,
1111 _dbus_string_get_length (str) - start);
1115 v = strtol (p, &end, 0);
1116 if (end == NULL || end == p || errno != 0)
1122 *end_return = start + (end - p);
1127 #ifdef DBUS_BUILD_TESTS
1128 /* Not currently used, so only built when tests are enabled */
1130 * Parses an unsigned integer contained in a DBusString. Either return
1131 * parameter may be #NULL if you aren't interested in it. The integer
1132 * is parsed and stored in value_return. Return parameters are not
1133 * initialized if the function returns #FALSE.
1135 * @param str the string
1136 * @param start the byte index of the start of the integer
1137 * @param value_return return location of the integer value or #NULL
1138 * @param end_return return location of the end of the integer, or #NULL
1139 * @returns #TRUE on success
1142 _dbus_string_parse_uint (const DBusString *str,
1144 unsigned long *value_return,
1151 p = _dbus_string_get_const_data_len (str, start,
1152 _dbus_string_get_length (str) - start);
1156 v = strtoul (p, &end, 0);
1157 if (end == NULL || end == p || errno != 0)
1163 *end_return = start + (end - p);
1167 #endif /* DBUS_BUILD_TESTS */
1170 ascii_isspace (char c)
1181 ascii_isdigit (char c)
1183 return c >= '0' && c <= '9';
1187 ascii_isxdigit (char c)
1189 return (ascii_isdigit (c) ||
1190 (c >= 'a' && c <= 'f') ||
1191 (c >= 'A' && c <= 'F'));
1195 /* Calls strtod in a locale-independent fashion, by looking at
1196 * the locale data and patching the decimal comma to a point.
1198 * Relicensed from glib.
1201 ascii_strtod (const char *nptr,
1206 struct lconv *locale_data;
1207 const char *decimal_point;
1208 int decimal_point_len;
1209 const char *p, *decimal_point_pos;
1210 const char *end = NULL; /* Silence gcc */
1214 locale_data = localeconv ();
1215 decimal_point = locale_data->decimal_point;
1216 decimal_point_len = strlen (decimal_point);
1218 _dbus_assert (decimal_point_len != 0);
1220 decimal_point_pos = NULL;
1221 if (decimal_point[0] != '.' ||
1222 decimal_point[1] != 0)
1225 /* Skip leading space */
1226 while (ascii_isspace (*p))
1229 /* Skip leading optional sign */
1230 if (*p == '+' || *p == '-')
1234 (p[1] == 'x' || p[1] == 'X'))
1237 /* HEX - find the (optional) decimal point */
1239 while (ascii_isxdigit (*p))
1244 decimal_point_pos = p++;
1246 while (ascii_isxdigit (*p))
1249 if (*p == 'p' || *p == 'P')
1251 if (*p == '+' || *p == '-')
1253 while (ascii_isdigit (*p))
1260 while (ascii_isdigit (*p))
1265 decimal_point_pos = p++;
1267 while (ascii_isdigit (*p))
1270 if (*p == 'e' || *p == 'E')
1272 if (*p == '+' || *p == '-')
1274 while (ascii_isdigit (*p))
1279 /* For the other cases, we need not convert the decimal point */
1282 /* Set errno to zero, so that we can distinguish zero results
1286 if (decimal_point_pos)
1290 /* We need to convert the '.' to the locale specific decimal point */
1291 copy = dbus_malloc (end - nptr + 1 + decimal_point_len);
1294 memcpy (c, nptr, decimal_point_pos - nptr);
1295 c += decimal_point_pos - nptr;
1296 memcpy (c, decimal_point, decimal_point_len);
1297 c += decimal_point_len;
1298 memcpy (c, decimal_point_pos + 1, end - (decimal_point_pos + 1));
1299 c += end - (decimal_point_pos + 1);
1302 val = strtod (copy, &fail_pos);
1306 if (fail_pos > decimal_point_pos)
1307 fail_pos = (char *)nptr + (fail_pos - copy) - (decimal_point_len - 1);
1309 fail_pos = (char *)nptr + (fail_pos - copy);
1316 val = strtod (nptr, &fail_pos);
1326 * Parses a floating point number contained in a DBusString. Either
1327 * return parameter may be #NULL if you aren't interested in it. The
1328 * integer is parsed and stored in value_return. Return parameters are
1329 * not initialized if the function returns #FALSE.
1331 * @param str the string
1332 * @param start the byte index of the start of the float
1333 * @param value_return return location of the float value or #NULL
1334 * @param end_return return location of the end of the float, or #NULL
1335 * @returns #TRUE on success
1338 _dbus_string_parse_double (const DBusString *str,
1340 double *value_return,
1347 p = _dbus_string_get_const_data_len (str, start,
1348 _dbus_string_get_length (str) - start);
1352 v = ascii_strtod (p, &end);
1353 if (end == NULL || end == p || errno != 0)
1359 *end_return = start + (end - p);
1364 /** @} */ /* DBusString group */
1367 * @addtogroup DBusInternalsUtils
1371 fill_user_info_from_passwd (struct passwd *p,
1375 _dbus_assert (p->pw_name != NULL);
1376 _dbus_assert (p->pw_dir != NULL);
1378 info->uid = p->pw_uid;
1379 info->primary_gid = p->pw_gid;
1380 info->username = _dbus_strdup (p->pw_name);
1381 info->homedir = _dbus_strdup (p->pw_dir);
1383 if (info->username == NULL ||
1384 info->homedir == NULL)
1386 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1394 fill_user_info (DBusUserInfo *info,
1396 const DBusString *username,
1399 const char *username_c;
1401 /* exactly one of username/uid provided */
1402 _dbus_assert (username != NULL || uid != DBUS_UID_UNSET);
1403 _dbus_assert (username == NULL || uid == DBUS_UID_UNSET);
1405 info->uid = DBUS_UID_UNSET;
1406 info->primary_gid = DBUS_GID_UNSET;
1407 info->group_ids = NULL;
1408 info->n_group_ids = 0;
1409 info->username = NULL;
1410 info->homedir = NULL;
1412 if (username != NULL)
1413 username_c = _dbus_string_get_const_data (username);
1417 /* For now assuming that the getpwnam() and getpwuid() flavors
1418 * are always symmetrical, if not we have to add more configure
1422 #if defined (HAVE_POSIX_GETPWNAME_R) || defined (HAVE_NONPOSIX_GETPWNAME_R)
1427 struct passwd p_str;
1430 #ifdef HAVE_POSIX_GETPWNAME_R
1432 result = getpwuid_r (uid, &p_str, buf, sizeof (buf),
1435 result = getpwnam_r (username_c, &p_str, buf, sizeof (buf),
1438 if (uid != DBUS_UID_UNSET)
1439 p = getpwuid_r (uid, &p_str, buf, sizeof (buf));
1441 p = getpwnam_r (username_c, &p_str, buf, sizeof (buf));
1443 #endif /* !HAVE_POSIX_GETPWNAME_R */
1444 if (result == 0 && p == &p_str)
1446 if (!fill_user_info_from_passwd (p, info, error))
1451 dbus_set_error (error, _dbus_error_from_errno (errno),
1452 "User \"%s\" unknown or no memory to allocate password entry\n",
1453 username_c ? username_c : "???");
1454 _dbus_verbose ("User %s unknown\n", username_c ? username_c : "???");
1458 #else /* ! HAVE_GETPWNAM_R */
1460 /* I guess we're screwed on thread safety here */
1463 if (uid != DBUS_UID_UNSET)
1466 p = getpwnam (username_c);
1470 if (!fill_user_info_from_passwd (p, info, error))
1475 dbus_set_error (error, _dbus_error_from_errno (errno),
1476 "User \"%s\" unknown or no memory to allocate password entry\n",
1477 username_c ? username_c : "???");
1478 _dbus_verbose ("User %s unknown\n", username_c ? username_c : "???");
1482 #endif /* ! HAVE_GETPWNAM_R */
1484 /* Fill this in so we can use it to get groups */
1485 username_c = info->username;
1487 #ifdef HAVE_GETGROUPLIST
1494 buf = dbus_new (gid_t, buf_count);
1497 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1501 if (getgrouplist (username_c,
1503 buf, &buf_count) < 0)
1505 gid_t *new = dbus_realloc (buf, buf_count * sizeof (buf[0]));
1508 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1516 if (getgrouplist (username_c, info->primary_gid, buf, &buf_count) < 0)
1518 dbus_set_error (error,
1519 _dbus_error_from_errno (errno),
1520 "Failed to get groups for username \"%s\" primary GID "
1521 DBUS_GID_FORMAT ": %s\n",
1522 username_c, info->primary_gid,
1523 _dbus_strerror (errno));
1529 info->group_ids = dbus_new (dbus_gid_t, buf_count);
1530 if (info->group_ids == NULL)
1532 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1537 for (i = 0; i < buf_count; ++i)
1538 info->group_ids[i] = buf[i];
1540 info->n_group_ids = buf_count;
1544 #else /* HAVE_GETGROUPLIST */
1546 /* We just get the one group ID */
1547 info->group_ids = dbus_new (dbus_gid_t, 1);
1548 if (info->group_ids == NULL)
1550 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1554 info->n_group_ids = 1;
1556 (info->group_ids)[0] = info->primary_gid;
1558 #endif /* HAVE_GETGROUPLIST */
1560 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1565 _DBUS_ASSERT_ERROR_IS_SET (error);
1566 _dbus_user_info_free (info);
1571 * Gets user info for the given username.
1573 * @param info user info object to initialize
1574 * @param username the username
1575 * @param error error return
1576 * @returns #TRUE on success
1579 _dbus_user_info_fill (DBusUserInfo *info,
1580 const DBusString *username,
1583 return fill_user_info (info, DBUS_UID_UNSET,
1588 * Gets user info for the given user ID.
1590 * @param info user info object to initialize
1591 * @param uid the user ID
1592 * @param error error return
1593 * @returns #TRUE on success
1596 _dbus_user_info_fill_uid (DBusUserInfo *info,
1600 return fill_user_info (info, uid,
1605 * Frees the members of info
1606 * (but not info itself)
1607 * @param info the user info struct
1610 _dbus_user_info_free (DBusUserInfo *info)
1612 dbus_free (info->group_ids);
1613 dbus_free (info->username);
1614 dbus_free (info->homedir);
1618 fill_user_info_from_group (struct group *g,
1619 DBusGroupInfo *info,
1622 _dbus_assert (g->gr_name != NULL);
1624 info->gid = g->gr_gid;
1625 info->groupname = _dbus_strdup (g->gr_name);
1627 /* info->members = dbus_strdupv (g->gr_mem) */
1629 if (info->groupname == NULL)
1631 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1639 fill_group_info (DBusGroupInfo *info,
1641 const DBusString *groupname,
1644 const char *group_c_str;
1646 _dbus_assert (groupname != NULL || gid != DBUS_GID_UNSET);
1647 _dbus_assert (groupname == NULL || gid == DBUS_GID_UNSET);
1650 group_c_str = _dbus_string_get_const_data (groupname);
1654 /* For now assuming that the getgrnam() and getgrgid() flavors
1655 * always correspond to the pwnam flavors, if not we have
1656 * to add more configure checks.
1659 #if defined (HAVE_POSIX_GETPWNAME_R) || defined (HAVE_NONPOSIX_GETPWNAME_R)
1667 #ifdef HAVE_POSIX_GETPWNAME_R
1670 result = getgrnam_r (group_c_str, &g_str, buf, sizeof (buf),
1673 result = getgrgid_r (gid, &g_str, buf, sizeof (buf),
1676 p = getgrnam_r (group_c_str, &g_str, buf, sizeof (buf));
1678 #endif /* !HAVE_POSIX_GETPWNAME_R */
1679 if (result == 0 && g == &g_str)
1681 return fill_user_info_from_group (g, info, error);
1685 dbus_set_error (error, _dbus_error_from_errno (errno),
1686 "Group %s unknown or failed to look it up\n",
1687 group_c_str ? group_c_str : "???");
1691 #else /* ! HAVE_GETPWNAM_R */
1693 /* I guess we're screwed on thread safety here */
1696 g = getgrnam (group_c_str);
1700 return fill_user_info_from_group (g, info, error);
1704 dbus_set_error (error, _dbus_error_from_errno (errno),
1705 "Group %s unknown or failed to look it up\n",
1706 group_c_str ? group_c_str : "???");
1710 #endif /* ! HAVE_GETPWNAM_R */
1714 * Initializes the given DBusGroupInfo struct
1715 * with information about the given group name.
1717 * @param info the group info struct
1718 * @param groupname name of group
1719 * @param error the error return
1720 * @returns #FALSE if error is set
1723 _dbus_group_info_fill (DBusGroupInfo *info,
1724 const DBusString *groupname,
1727 return fill_group_info (info, DBUS_GID_UNSET,
1733 * Initializes the given DBusGroupInfo struct
1734 * with information about the given group ID.
1736 * @param info the group info struct
1737 * @param gid group ID
1738 * @param error the error return
1739 * @returns #FALSE if error is set
1742 _dbus_group_info_fill_gid (DBusGroupInfo *info,
1746 return fill_group_info (info, gid, NULL, error);
1750 * Frees the members of info (but not info itself).
1752 * @param info the group info
1755 _dbus_group_info_free (DBusGroupInfo *info)
1757 dbus_free (info->groupname);
1761 * Sets fields in DBusCredentials to DBUS_PID_UNSET,
1762 * DBUS_UID_UNSET, DBUS_GID_UNSET.
1764 * @param credentials the credentials object to fill in
1767 _dbus_credentials_clear (DBusCredentials *credentials)
1769 credentials->pid = DBUS_PID_UNSET;
1770 credentials->uid = DBUS_UID_UNSET;
1771 credentials->gid = DBUS_GID_UNSET;
1775 * Gets the credentials of the current process.
1777 * @param credentials credentials to fill in.
1780 _dbus_credentials_from_current_process (DBusCredentials *credentials)
1782 /* The POSIX spec certainly doesn't promise this, but
1783 * we need these assertions to fail as soon as we're wrong about
1784 * it so we can do the porting fixups
1786 _dbus_assert (sizeof (pid_t) <= sizeof (credentials->pid));
1787 _dbus_assert (sizeof (uid_t) <= sizeof (credentials->uid));
1788 _dbus_assert (sizeof (gid_t) <= sizeof (credentials->gid));
1790 credentials->pid = getpid ();
1791 credentials->uid = getuid ();
1792 credentials->gid = getgid ();
1796 * Checks whether the provided_credentials are allowed to log in
1797 * as the expected_credentials.
1799 * @param expected_credentials credentials we're trying to log in as
1800 * @param provided_credentials credentials we have
1801 * @returns #TRUE if we can log in
1804 _dbus_credentials_match (const DBusCredentials *expected_credentials,
1805 const DBusCredentials *provided_credentials)
1807 if (provided_credentials->uid == DBUS_UID_UNSET)
1809 else if (expected_credentials->uid == DBUS_UID_UNSET)
1811 else if (provided_credentials->uid == 0)
1813 else if (provided_credentials->uid == expected_credentials->uid)
1820 * Gets our process ID
1821 * @returns process ID
1830 * @returns process UID
1839 * @returns process GID
1847 _DBUS_DEFINE_GLOBAL_LOCK (atomic);
1849 #ifdef DBUS_USE_ATOMIC_INT_486
1850 /* Taken from CVS version 1.7 of glibc's sysdeps/i386/i486/atomicity.h */
1851 /* Since the asm stuff here is gcc-specific we go ahead and use "inline" also */
1852 static inline dbus_int32_t
1853 atomic_exchange_and_add (DBusAtomic *atomic,
1854 volatile dbus_int32_t val)
1856 register dbus_int32_t result;
1858 __asm__ __volatile__ ("lock; xaddl %0,%1"
1859 : "=r" (result), "=m" (atomic->value)
1860 : "0" (val), "m" (atomic->value));
1866 * Atomically increments an integer
1868 * @param atomic pointer to the integer to increment
1869 * @returns the value before incrementing
1871 * @todo implement arch-specific faster atomic ops
1874 _dbus_atomic_inc (DBusAtomic *atomic)
1876 #ifdef DBUS_USE_ATOMIC_INT_486
1877 return atomic_exchange_and_add (atomic, 1);
1880 _DBUS_LOCK (atomic);
1881 res = atomic->value;
1883 _DBUS_UNLOCK (atomic);
1889 * Atomically decrement an integer
1891 * @param atomic pointer to the integer to decrement
1892 * @returns the value before decrementing
1894 * @todo implement arch-specific faster atomic ops
1897 _dbus_atomic_dec (DBusAtomic *atomic)
1899 #ifdef DBUS_USE_ATOMIC_INT_486
1900 return atomic_exchange_and_add (atomic, -1);
1904 _DBUS_LOCK (atomic);
1905 res = atomic->value;
1907 _DBUS_UNLOCK (atomic);
1913 * Wrapper for poll().
1915 * @param fds the file descriptors to poll
1916 * @param n_fds number of descriptors in the array
1917 * @param timeout_milliseconds timeout or -1 for infinite
1918 * @returns numbers of fds with revents, or <0 on error
1921 _dbus_poll (DBusPollFD *fds,
1923 int timeout_milliseconds)
1926 /* This big thing is a constant expression and should get optimized
1927 * out of existence. So it's more robust than a configure check at
1930 if (_DBUS_POLLIN == POLLIN &&
1931 _DBUS_POLLPRI == POLLPRI &&
1932 _DBUS_POLLOUT == POLLOUT &&
1933 _DBUS_POLLERR == POLLERR &&
1934 _DBUS_POLLHUP == POLLHUP &&
1935 _DBUS_POLLNVAL == POLLNVAL &&
1936 sizeof (DBusPollFD) == sizeof (struct pollfd) &&
1937 _DBUS_STRUCT_OFFSET (DBusPollFD, fd) ==
1938 _DBUS_STRUCT_OFFSET (struct pollfd, fd) &&
1939 _DBUS_STRUCT_OFFSET (DBusPollFD, events) ==
1940 _DBUS_STRUCT_OFFSET (struct pollfd, events) &&
1941 _DBUS_STRUCT_OFFSET (DBusPollFD, revents) ==
1942 _DBUS_STRUCT_OFFSET (struct pollfd, revents))
1944 return poll ((struct pollfd*) fds,
1946 timeout_milliseconds);
1950 /* We have to convert the DBusPollFD to an array of
1951 * struct pollfd, poll, and convert back.
1953 _dbus_warn ("didn't implement poll() properly for this system yet\n");
1956 #else /* ! HAVE_POLL */
1958 fd_set read_set, write_set, err_set;
1964 FD_ZERO (&read_set);
1965 FD_ZERO (&write_set);
1968 for (i = 0; i < n_fds; i++)
1970 DBusPollFD f = fds[i];
1972 if (f.events & _DBUS_POLLIN)
1973 FD_SET (f.fd, &read_set);
1975 if (f.events & _DBUS_POLLOUT)
1976 FD_SET (f.fd, &write_set);
1978 FD_SET (f.fd, &err_set);
1980 max_fd = MAX (max_fd, f.fd);
1983 tv.tv_sec = timeout_milliseconds / 1000;
1984 tv.tv_usec = (timeout_milliseconds % 1000) * 1000;
1986 ready = select (max_fd + 1, &read_set, &write_set, &err_set, &tv);
1990 for (i = 0; i < n_fds; i++)
1992 DBusPollFD f = fds[i];
1996 if (FD_ISSET (f.fd, &read_set))
1997 f.revents |= _DBUS_POLLIN;
1999 if (FD_ISSET (f.fd, &write_set))
2000 f.revents |= _DBUS_POLLOUT;
2002 if (FD_ISSET (f.fd, &err_set))
2003 f.revents |= _DBUS_POLLERR;
2011 /** nanoseconds in a second */
2012 #define NANOSECONDS_PER_SECOND 1000000000
2013 /** microseconds in a second */
2014 #define MICROSECONDS_PER_SECOND 1000000
2015 /** milliseconds in a second */
2016 #define MILLISECONDS_PER_SECOND 1000
2017 /** nanoseconds in a millisecond */
2018 #define NANOSECONDS_PER_MILLISECOND 1000000
2019 /** microseconds in a millisecond */
2020 #define MICROSECONDS_PER_MILLISECOND 1000
2023 * Sleeps the given number of milliseconds.
2024 * @param milliseconds number of milliseconds
2027 _dbus_sleep_milliseconds (int milliseconds)
2029 #ifdef HAVE_NANOSLEEP
2030 struct timespec req;
2031 struct timespec rem;
2033 req.tv_sec = milliseconds / MILLISECONDS_PER_SECOND;
2034 req.tv_nsec = (milliseconds % MILLISECONDS_PER_SECOND) * NANOSECONDS_PER_MILLISECOND;
2038 while (nanosleep (&req, &rem) < 0 && errno == EINTR)
2040 #elif defined (HAVE_USLEEP)
2041 usleep (milliseconds * MICROSECONDS_PER_MILLISECOND);
2042 #else /* ! HAVE_USLEEP */
2043 sleep (MAX (milliseconds / 1000, 1));
2048 * Get current time, as in gettimeofday().
2050 * @param tv_sec return location for number of seconds
2051 * @param tv_usec return location for number of microseconds (thousandths)
2054 _dbus_get_current_time (long *tv_sec,
2059 gettimeofday (&t, NULL);
2064 *tv_usec = t.tv_usec;
2068 * Appends the contents of the given file to the string,
2069 * returning error code. At the moment, won't open a file
2070 * more than a megabyte in size.
2072 * @param str the string to append to
2073 * @param filename filename to load
2074 * @param error place to set an error
2075 * @returns #FALSE if error was set
2078 _dbus_file_get_contents (DBusString *str,
2079 const DBusString *filename,
2086 const char *filename_c;
2088 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2090 filename_c = _dbus_string_get_const_data (filename);
2092 /* O_BINARY useful on Cygwin */
2093 fd = open (filename_c, O_RDONLY | O_BINARY);
2096 dbus_set_error (error, _dbus_error_from_errno (errno),
2097 "Failed to open \"%s\": %s",
2099 _dbus_strerror (errno));
2103 if (fstat (fd, &sb) < 0)
2105 dbus_set_error (error, _dbus_error_from_errno (errno),
2106 "Failed to stat \"%s\": %s",
2108 _dbus_strerror (errno));
2110 _dbus_verbose ("fstat() failed: %s",
2111 _dbus_strerror (errno));
2118 if (sb.st_size > _DBUS_ONE_MEGABYTE)
2120 dbus_set_error (error, DBUS_ERROR_FAILED,
2121 "File size %lu of \"%s\" is too large.",
2122 filename_c, (unsigned long) sb.st_size);
2128 orig_len = _dbus_string_get_length (str);
2129 if (sb.st_size > 0 && S_ISREG (sb.st_mode))
2133 while (total < (int) sb.st_size)
2135 bytes_read = _dbus_read (fd, str,
2136 sb.st_size - total);
2137 if (bytes_read <= 0)
2139 dbus_set_error (error, _dbus_error_from_errno (errno),
2140 "Error reading \"%s\": %s",
2142 _dbus_strerror (errno));
2144 _dbus_verbose ("read() failed: %s",
2145 _dbus_strerror (errno));
2148 _dbus_string_set_length (str, orig_len);
2152 total += bytes_read;
2158 else if (sb.st_size != 0)
2160 _dbus_verbose ("Can only open regular files at the moment.\n");
2161 dbus_set_error (error, DBUS_ERROR_FAILED,
2162 "\"%s\" is not a regular file",
2175 * Writes a string out to a file. If the file exists,
2176 * it will be atomically overwritten by the new data.
2178 * @param str the string to write out
2179 * @param filename the file to save string to
2180 * @param error error to be filled in on failure
2181 * @returns #FALSE on failure
2184 _dbus_string_save_to_file (const DBusString *str,
2185 const DBusString *filename,
2190 const char *filename_c;
2191 DBusString tmp_filename;
2192 const char *tmp_filename_c;
2194 dbus_bool_t need_unlink;
2197 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2201 need_unlink = FALSE;
2203 if (!_dbus_string_init (&tmp_filename))
2205 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
2209 if (!_dbus_string_copy (filename, 0, &tmp_filename, 0))
2211 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
2212 _dbus_string_free (&tmp_filename);
2216 if (!_dbus_string_append (&tmp_filename, "."))
2218 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
2219 _dbus_string_free (&tmp_filename);
2223 #define N_TMP_FILENAME_RANDOM_BYTES 8
2224 if (!_dbus_generate_random_ascii (&tmp_filename, N_TMP_FILENAME_RANDOM_BYTES))
2226 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
2227 _dbus_string_free (&tmp_filename);
2231 filename_c = _dbus_string_get_const_data (filename);
2232 tmp_filename_c = _dbus_string_get_const_data (&tmp_filename);
2234 fd = open (tmp_filename_c, O_WRONLY | O_BINARY | O_EXCL | O_CREAT,
2238 dbus_set_error (error, _dbus_error_from_errno (errno),
2239 "Could not create %s: %s", tmp_filename_c,
2240 _dbus_strerror (errno));
2247 bytes_to_write = _dbus_string_get_length (str);
2249 while (total < bytes_to_write)
2253 bytes_written = _dbus_write (fd, str, total,
2254 bytes_to_write - total);
2256 if (bytes_written <= 0)
2258 dbus_set_error (error, _dbus_error_from_errno (errno),
2259 "Could not write to %s: %s", tmp_filename_c,
2260 _dbus_strerror (errno));
2265 total += bytes_written;
2270 dbus_set_error (error, _dbus_error_from_errno (errno),
2271 "Could not close file %s: %s",
2272 tmp_filename_c, _dbus_strerror (errno));
2279 if (rename (tmp_filename_c, filename_c) < 0)
2281 dbus_set_error (error, _dbus_error_from_errno (errno),
2282 "Could not rename %s to %s: %s",
2283 tmp_filename_c, filename_c,
2284 _dbus_strerror (errno));
2289 need_unlink = FALSE;
2294 /* close first, then unlink, to prevent ".nfs34234235" garbage
2301 if (need_unlink && unlink (tmp_filename_c) < 0)
2302 _dbus_verbose ("Failed to unlink temp file %s: %s\n",
2303 tmp_filename_c, _dbus_strerror (errno));
2305 _dbus_string_free (&tmp_filename);
2308 _DBUS_ASSERT_ERROR_IS_SET (error);
2313 /** Creates the given file, failing if the file already exists.
2315 * @param filename the filename
2316 * @param error error location
2317 * @returns #TRUE if we created the file and it didn't exist
2320 _dbus_create_file_exclusively (const DBusString *filename,
2324 const char *filename_c;
2326 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2328 filename_c = _dbus_string_get_const_data (filename);
2330 fd = open (filename_c, O_WRONLY | O_BINARY | O_EXCL | O_CREAT,
2334 dbus_set_error (error,
2336 "Could not create file %s: %s\n",
2338 _dbus_strerror (errno));
2344 dbus_set_error (error,
2346 "Could not close file %s: %s\n",
2348 _dbus_strerror (errno));
2356 * Deletes the given file.
2358 * @param filename the filename
2359 * @param error error location
2361 * @returns #TRUE if unlink() succeeded
2364 _dbus_delete_file (const DBusString *filename,
2367 const char *filename_c;
2369 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2371 filename_c = _dbus_string_get_const_data (filename);
2373 if (unlink (filename_c) < 0)
2375 dbus_set_error (error, DBUS_ERROR_FAILED,
2376 "Failed to delete file %s: %s\n",
2377 filename_c, _dbus_strerror (errno));
2385 * Creates a directory; succeeds if the directory
2386 * is created or already existed.
2388 * @param filename directory filename
2389 * @param error initialized error object
2390 * @returns #TRUE on success
2393 _dbus_create_directory (const DBusString *filename,
2396 const char *filename_c;
2398 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2400 filename_c = _dbus_string_get_const_data (filename);
2402 if (mkdir (filename_c, 0700) < 0)
2404 if (errno == EEXIST)
2407 dbus_set_error (error, DBUS_ERROR_FAILED,
2408 "Failed to create directory %s: %s\n",
2409 filename_c, _dbus_strerror (errno));
2417 * Removes a directory; Directory must be empty
2419 * @param filename directory filename
2420 * @param error initialized error object
2421 * @returns #TRUE on success
2424 _dbus_delete_directory (const DBusString *filename,
2427 const char *filename_c;
2429 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2431 filename_c = _dbus_string_get_const_data (filename);
2433 if (rmdir (filename_c) != 0)
2435 dbus_set_error (error, DBUS_ERROR_FAILED,
2436 "Failed to remove directory %s: %s\n",
2437 filename_c, _dbus_strerror (errno));
2445 * Appends the given filename to the given directory.
2447 * @todo it might be cute to collapse multiple '/' such as "foo//"
2450 * @param dir the directory name
2451 * @param next_component the filename
2452 * @returns #TRUE on success
2455 _dbus_concat_dir_and_file (DBusString *dir,
2456 const DBusString *next_component)
2458 dbus_bool_t dir_ends_in_slash;
2459 dbus_bool_t file_starts_with_slash;
2461 if (_dbus_string_get_length (dir) == 0 ||
2462 _dbus_string_get_length (next_component) == 0)
2465 dir_ends_in_slash = '/' == _dbus_string_get_byte (dir,
2466 _dbus_string_get_length (dir) - 1);
2468 file_starts_with_slash = '/' == _dbus_string_get_byte (next_component, 0);
2470 if (dir_ends_in_slash && file_starts_with_slash)
2472 _dbus_string_shorten (dir, 1);
2474 else if (!(dir_ends_in_slash || file_starts_with_slash))
2476 if (!_dbus_string_append_byte (dir, '/'))
2480 return _dbus_string_copy (next_component, 0, dir,
2481 _dbus_string_get_length (dir));
2485 * Get the directory name from a complete filename
2486 * @param filename the filename
2487 * @param dirname string to append directory name to
2488 * @returns #FALSE if no memory
2491 _dbus_string_get_dirname (const DBusString *filename,
2492 DBusString *dirname)
2496 _dbus_assert (filename != dirname);
2497 _dbus_assert (filename != NULL);
2498 _dbus_assert (dirname != NULL);
2500 /* Ignore any separators on the end */
2501 sep = _dbus_string_get_length (filename);
2503 return _dbus_string_append (dirname, "."); /* empty string passed in */
2505 while (sep > 0 && _dbus_string_get_byte (filename, sep - 1) == '/')
2508 _dbus_assert (sep >= 0);
2511 return _dbus_string_append (dirname, "/");
2513 /* Now find the previous separator */
2514 _dbus_string_find_byte_backward (filename, sep, '/', &sep);
2516 return _dbus_string_append (dirname, ".");
2518 /* skip multiple separators */
2519 while (sep > 0 && _dbus_string_get_byte (filename, sep - 1) == '/')
2522 _dbus_assert (sep >= 0);
2525 _dbus_string_get_byte (filename, 0) == '/')
2526 return _dbus_string_append (dirname, "/");
2528 return _dbus_string_copy_len (filename, 0, sep - 0,
2529 dirname, _dbus_string_get_length (dirname));
2533 * Checks whether the filename is an absolute path
2535 * @param filename the filename
2536 * @returns #TRUE if an absolute path
2539 _dbus_path_is_absolute (const DBusString *filename)
2541 if (_dbus_string_get_length (filename) > 0)
2542 return _dbus_string_get_byte (filename, 0) == '/';
2548 * Internals of directory iterator
2552 DIR *d; /**< The DIR* from opendir() */
2557 * Open a directory to iterate over.
2559 * @param filename the directory name
2560 * @param error exception return object or #NULL
2561 * @returns new iterator, or #NULL on error
2564 _dbus_directory_open (const DBusString *filename,
2569 const char *filename_c;
2571 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2573 filename_c = _dbus_string_get_const_data (filename);
2575 d = opendir (filename_c);
2578 dbus_set_error (error, _dbus_error_from_errno (errno),
2579 "Failed to read directory \"%s\": %s",
2581 _dbus_strerror (errno));
2584 iter = dbus_new0 (DBusDirIter, 1);
2588 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
2589 "Could not allocate memory for directory iterator");
2599 * Get next file in the directory. Will not return "." or ".." on
2600 * UNIX. If an error occurs, the contents of "filename" are
2601 * undefined. The error is never set if the function succeeds.
2603 * @todo for thread safety, I think we have to use
2604 * readdir_r(). (GLib has the same issue, should file a bug.)
2606 * @param iter the iterator
2607 * @param filename string to be set to the next file in the dir
2608 * @param error return location for error
2609 * @returns #TRUE if filename was filled in with a new filename
2612 _dbus_directory_get_next_file (DBusDirIter *iter,
2613 DBusString *filename,
2618 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2622 ent = readdir (iter->d);
2626 dbus_set_error (error,
2627 _dbus_error_from_errno (errno),
2628 "%s", _dbus_strerror (errno));
2631 else if (ent->d_name[0] == '.' &&
2632 (ent->d_name[1] == '\0' ||
2633 (ent->d_name[1] == '.' && ent->d_name[2] == '\0')))
2637 _dbus_string_set_length (filename, 0);
2638 if (!_dbus_string_append (filename, ent->d_name))
2640 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
2641 "No memory to read directory entry");
2650 * Closes a directory iteration.
2653 _dbus_directory_close (DBusDirIter *iter)
2660 pseudorandom_generate_random_bytes (DBusString *str,
2664 unsigned long tv_usec;
2667 old_len = _dbus_string_get_length (str);
2669 /* fall back to pseudorandom */
2670 _dbus_verbose ("Falling back to pseudorandom for %d bytes\n",
2673 _dbus_get_current_time (NULL, &tv_usec);
2683 b = (r / (double) RAND_MAX) * 255.0;
2685 if (!_dbus_string_append_byte (str, b))
2694 _dbus_string_set_length (str, old_len);
2699 * Generates the given number of random bytes,
2700 * using the best mechanism we can come up with.
2702 * @param str the string
2703 * @param n_bytes the number of random bytes to append to string
2704 * @returns #TRUE on success, #FALSE if no memory
2707 _dbus_generate_random_bytes (DBusString *str,
2713 /* FALSE return means "no memory", if it could
2714 * mean something else then we'd need to return
2715 * a DBusError. So we always fall back to pseudorandom
2719 old_len = _dbus_string_get_length (str);
2722 /* note, urandom on linux will fall back to pseudorandom */
2723 fd = open ("/dev/urandom", O_RDONLY);
2725 return pseudorandom_generate_random_bytes (str, n_bytes);
2727 if (_dbus_read (fd, str, n_bytes) != n_bytes)
2730 _dbus_string_set_length (str, old_len);
2731 return pseudorandom_generate_random_bytes (str, n_bytes);
2734 _dbus_verbose ("Read %d bytes from /dev/urandom\n",
2743 * Generates the given number of random bytes, where the bytes are
2744 * chosen from the alphanumeric ASCII subset.
2746 * @param str the string
2747 * @param n_bytes the number of random ASCII bytes to append to string
2748 * @returns #TRUE on success, #FALSE if no memory or other failure
2751 _dbus_generate_random_ascii (DBusString *str,
2754 static const char letters[] =
2755 "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz";
2759 if (!_dbus_generate_random_bytes (str, n_bytes))
2762 len = _dbus_string_get_length (str);
2766 _dbus_string_set_byte (str, i,
2767 letters[_dbus_string_get_byte (str, i) %
2768 (sizeof (letters) - 1)]);
2773 _dbus_assert (_dbus_string_validate_ascii (str, len - n_bytes,
2780 * A wrapper around strerror() because some platforms
2781 * may be lame and not have strerror().
2783 * @param error_number errno.
2784 * @returns error description.
2787 _dbus_strerror (int error_number)
2791 msg = strerror (error_number);
2799 * signal (SIGPIPE, SIG_IGN);
2802 _dbus_disable_sigpipe (void)
2804 signal (SIGPIPE, SIG_IGN);
2808 * Sets the file descriptor to be close
2809 * on exec. Should be called for all file
2810 * descriptors in D-BUS code.
2812 * @param fd the file descriptor
2815 _dbus_fd_set_close_on_exec (int fd)
2819 val = fcntl (fd, F_GETFD, 0);
2826 fcntl (fd, F_SETFD, val);
2830 * Converts a UNIX errno into a #DBusError name.
2832 * @todo should cover more errnos, specifically those
2835 * @param error_number the errno.
2836 * @returns an error name
2839 _dbus_error_from_errno (int error_number)
2841 switch (error_number)
2844 return DBUS_ERROR_FAILED;
2846 #ifdef EPROTONOSUPPORT
2847 case EPROTONOSUPPORT:
2848 return DBUS_ERROR_NOT_SUPPORTED;
2852 return DBUS_ERROR_NOT_SUPPORTED;
2856 return DBUS_ERROR_LIMITS_EXCEEDED; /* kernel out of memory */
2860 return DBUS_ERROR_LIMITS_EXCEEDED;
2864 return DBUS_ERROR_ACCESS_DENIED;
2868 return DBUS_ERROR_ACCESS_DENIED;
2872 return DBUS_ERROR_NO_MEMORY;
2876 return DBUS_ERROR_NO_MEMORY;
2880 return DBUS_ERROR_FAILED;
2884 return DBUS_ERROR_FAILED;
2888 return DBUS_ERROR_FAILED;
2892 return DBUS_ERROR_FAILED;
2896 return DBUS_ERROR_FAILED;
2900 return DBUS_ERROR_NO_SERVER;
2904 return DBUS_ERROR_TIMEOUT;
2908 return DBUS_ERROR_NO_NETWORK;
2912 return DBUS_ERROR_ADDRESS_IN_USE;
2916 return DBUS_ERROR_FILE_NOT_FOUND;
2920 return DBUS_ERROR_FILE_NOT_FOUND;
2924 return DBUS_ERROR_FAILED;
2928 * Exit the process, returning the given value.
2930 * @param code the exit code
2933 _dbus_exit (int code)
2941 * @param filename the filename to stat
2942 * @param statbuf the stat info to fill in
2943 * @param error return location for error
2944 * @returns #FALSE if error was set
2947 _dbus_stat (const DBusString *filename,
2951 const char *filename_c;
2954 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2956 filename_c = _dbus_string_get_const_data (filename);
2958 if (stat (filename_c, &sb) < 0)
2960 dbus_set_error (error, _dbus_error_from_errno (errno),
2961 "%s", _dbus_strerror (errno));
2965 statbuf->mode = sb.st_mode;
2966 statbuf->nlink = sb.st_nlink;
2967 statbuf->uid = sb.st_uid;
2968 statbuf->gid = sb.st_gid;
2969 statbuf->size = sb.st_size;
2970 statbuf->atime = sb.st_atime;
2971 statbuf->mtime = sb.st_mtime;
2972 statbuf->ctime = sb.st_ctime;
2978 * Creates a full-duplex pipe (as in socketpair()).
2979 * Sets both ends of the pipe nonblocking.
2981 * @param fd1 return location for one end
2982 * @param fd2 return location for the other end
2983 * @param blocking #TRUE if pipe should be blocking
2984 * @param error error return
2985 * @returns #FALSE on failure (if error is set)
2988 _dbus_full_duplex_pipe (int *fd1,
2990 dbus_bool_t blocking,
2993 #ifdef HAVE_SOCKETPAIR
2996 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2998 if (socketpair (AF_UNIX, SOCK_STREAM, 0, fds) < 0)
3000 dbus_set_error (error, _dbus_error_from_errno (errno),
3001 "Could not create full-duplex pipe");
3006 (!_dbus_set_fd_nonblocking (fds[0], NULL) ||
3007 !_dbus_set_fd_nonblocking (fds[1], NULL)))
3009 dbus_set_error (error, _dbus_error_from_errno (errno),
3010 "Could not set full-duplex pipe nonblocking");
3023 _dbus_warn ("_dbus_full_duplex_pipe() not implemented on this OS\n");
3024 dbus_set_error (error, DBUS_ERROR_FAILED,
3025 "_dbus_full_duplex_pipe() not implemented on this OS");
3031 * Closes a file descriptor.
3033 * @param fd the file descriptor
3034 * @param error error object
3035 * @returns #FALSE if error set
3038 _dbus_close (int fd,
3041 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3049 dbus_set_error (error, _dbus_error_from_errno (errno),
3050 "Could not close fd %d", fd);
3058 * Sets a file descriptor to be nonblocking.
3060 * @param fd the file descriptor.
3061 * @param error address of error location.
3062 * @returns #TRUE on success.
3065 _dbus_set_fd_nonblocking (int fd,
3070 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3072 val = fcntl (fd, F_GETFL, 0);
3075 dbus_set_error (error, _dbus_error_from_errno (errno),
3076 "Failed to get flags from file descriptor %d: %s",
3077 fd, _dbus_strerror (errno));
3078 _dbus_verbose ("Failed to get flags for fd %d: %s\n", fd,
3079 _dbus_strerror (errno));
3083 if (fcntl (fd, F_SETFL, val | O_NONBLOCK) < 0)
3085 dbus_set_error (error, _dbus_error_from_errno (errno),
3086 "Failed to set nonblocking flag of file descriptor %d: %s",
3087 fd, _dbus_strerror (errno));
3088 _dbus_verbose ("Failed to set fd %d nonblocking: %s\n",
3089 fd, _dbus_strerror (errno));
3098 * On GNU libc systems, print a crude backtrace to the verbose log.
3099 * On other systems, print "no backtrace support"
3103 _dbus_print_backtrace (void)
3105 #if defined (HAVE_BACKTRACE) && defined (DBUS_ENABLE_VERBOSE_MODE)
3111 bt_size = backtrace (bt, 500);
3113 syms = backtrace_symbols (bt, bt_size);
3118 _dbus_verbose (" %s\n", syms[i]);
3124 _dbus_verbose (" D-BUS not compiled with backtrace support\n");
3129 * Does the chdir, fork, setsid, etc. to become a daemon process.
3131 * @param pidfile #NULL, or pidfile to create
3132 * @param error return location for errors
3133 * @returns #FALSE on failure
3136 _dbus_become_daemon (const DBusString *pidfile,
3143 _dbus_verbose ("Becoming a daemon...\n");
3145 _dbus_verbose ("chdir to /\n");
3146 if (chdir ("/") < 0)
3148 dbus_set_error (error, DBUS_ERROR_FAILED,
3149 "Could not chdir() to root directory");
3153 _dbus_verbose ("forking...\n");
3154 switch ((child_pid = fork ()))
3157 _dbus_verbose ("fork failed\n");
3158 dbus_set_error (error, _dbus_error_from_errno (errno),
3159 "Failed to fork daemon: %s", _dbus_strerror (errno));
3164 _dbus_verbose ("in child, closing std file descriptors\n");
3166 /* silently ignore failures here, if someone
3167 * doesn't have /dev/null we may as well try
3168 * to continue anyhow
3171 dev_null_fd = open ("/dev/null", O_RDWR);
3172 if (dev_null_fd >= 0)
3174 dup2 (dev_null_fd, 0);
3175 dup2 (dev_null_fd, 1);
3177 s = _dbus_getenv ("DBUS_DEBUG_OUTPUT");
3178 if (s == NULL || *s == '\0')
3179 dup2 (dev_null_fd, 2);
3181 _dbus_verbose ("keeping stderr open due to DBUS_DEBUG_OUTPUT\n");
3184 /* Get a predictable umask */
3185 _dbus_verbose ("setting umask\n");
3192 _dbus_verbose ("parent writing pid file\n");
3193 if (!_dbus_write_pid_file (pidfile,
3197 _dbus_verbose ("pid file write failed, killing child\n");
3198 kill (child_pid, SIGTERM);
3202 _dbus_verbose ("parent exiting\n");
3207 _dbus_verbose ("calling setsid()\n");
3208 if (setsid () == -1)
3209 _dbus_assert_not_reached ("setsid() failed");
3215 * Creates a file containing the process ID.
3217 * @param filename the filename to write to
3218 * @param pid our process ID
3219 * @param error return location for errors
3220 * @returns #FALSE on failure
3223 _dbus_write_pid_file (const DBusString *filename,
3227 const char *cfilename;
3231 cfilename = _dbus_string_get_const_data (filename);
3233 fd = open (cfilename, O_WRONLY|O_CREAT|O_EXCL|O_BINARY, 0644);
3237 dbus_set_error (error, _dbus_error_from_errno (errno),
3238 "Failed to open \"%s\": %s", cfilename,
3239 _dbus_strerror (errno));
3243 if ((f = fdopen (fd, "w")) == NULL)
3245 dbus_set_error (error, _dbus_error_from_errno (errno),
3246 "Failed to fdopen fd %d: %s", fd, _dbus_strerror (errno));
3251 if (fprintf (f, "%lu\n", pid) < 0)
3253 dbus_set_error (error, _dbus_error_from_errno (errno),
3254 "Failed to write to \"%s\": %s", cfilename,
3255 _dbus_strerror (errno));
3259 if (fclose (f) == EOF)
3261 dbus_set_error (error, _dbus_error_from_errno (errno),
3262 "Failed to close \"%s\": %s", cfilename,
3263 _dbus_strerror (errno));
3271 * Changes the user and group the bus is running as.
3273 * @param uid the new user ID
3274 * @param gid the new group ID
3275 * @param error return location for errors
3276 * @returns #FALSE on failure
3279 _dbus_change_identity (dbus_uid_t uid,
3283 /* Set GID first, or the setuid may remove our permission
3286 if (setgid (gid) < 0)
3288 dbus_set_error (error, _dbus_error_from_errno (errno),
3289 "Failed to set GID to %lu: %s", gid,
3290 _dbus_strerror (errno));
3294 if (setuid (uid) < 0)
3296 dbus_set_error (error, _dbus_error_from_errno (errno),
3297 "Failed to set UID to %lu: %s", uid,
3298 _dbus_strerror (errno));
3305 /** Installs a UNIX signal handler
3307 * @param sig the signal to handle
3308 * @param handler the handler
3311 _dbus_set_signal_handler (int sig,
3312 DBusSignalHandler handler)
3314 struct sigaction act;
3315 sigset_t empty_mask;
3317 sigemptyset (&empty_mask);
3318 act.sa_handler = handler;
3319 act.sa_mask = empty_mask;
3321 sigaction (sig, &act, 0);
3325 #ifdef DBUS_BUILD_TESTS
3328 check_dirname (const char *filename,
3329 const char *dirname)
3333 _dbus_string_init_const (&f, filename);
3335 if (!_dbus_string_init (&d))
3336 _dbus_assert_not_reached ("no memory");
3338 if (!_dbus_string_get_dirname (&f, &d))
3339 _dbus_assert_not_reached ("no memory");
3341 if (!_dbus_string_equal_c_str (&d, dirname))
3343 _dbus_warn ("For filename \"%s\" got dirname \"%s\" and expected \"%s\"\n",
3345 _dbus_string_get_const_data (&d),
3350 _dbus_string_free (&d);
3354 check_path_absolute (const char *path,
3355 dbus_bool_t expected)
3359 _dbus_string_init_const (&p, path);
3361 if (_dbus_path_is_absolute (&p) != expected)
3363 _dbus_warn ("For path \"%s\" expected absolute = %d got %d\n",
3364 path, expected, _dbus_path_is_absolute (&p));
3370 * Unit test for dbus-sysdeps.c.
3372 * @returns #TRUE on success.
3375 _dbus_sysdeps_test (void)
3381 check_dirname ("foo", ".");
3382 check_dirname ("foo/bar", "foo");
3383 check_dirname ("foo//bar", "foo");
3384 check_dirname ("foo///bar", "foo");
3385 check_dirname ("foo/bar/", "foo");
3386 check_dirname ("foo//bar/", "foo");
3387 check_dirname ("foo///bar/", "foo");
3388 check_dirname ("foo/bar//", "foo");
3389 check_dirname ("foo//bar////", "foo");
3390 check_dirname ("foo///bar///////", "foo");
3391 check_dirname ("/foo", "/");
3392 check_dirname ("////foo", "/");
3393 check_dirname ("/foo/bar", "/foo");
3394 check_dirname ("/foo//bar", "/foo");
3395 check_dirname ("/foo///bar", "/foo");
3396 check_dirname ("/", "/");
3397 check_dirname ("///", "/");
3398 check_dirname ("", ".");
3401 _dbus_string_init_const (&str, "3.5");
3402 if (!_dbus_string_parse_double (&str,
3405 _dbus_warn ("Failed to parse double");
3410 _dbus_warn ("Failed to parse 3.5 correctly, got: %f", val);
3415 _dbus_warn ("_dbus_string_parse_double of \"3.5\" returned wrong position %d", pos);
3419 _dbus_string_init_const (&str, "0xff");
3420 if (!_dbus_string_parse_double (&str,
3423 _dbus_warn ("Failed to parse double");
3428 _dbus_warn ("Failed to parse 0xff correctly, got: %f", val);
3433 _dbus_warn ("_dbus_string_parse_double of \"0xff\" returned wrong position %d", pos);
3437 check_path_absolute ("/", TRUE);
3438 check_path_absolute ("/foo", TRUE);
3439 check_path_absolute ("", FALSE);
3440 check_path_absolute ("foo", FALSE);
3441 check_path_absolute ("foo/bar", FALSE);
3445 #endif /* DBUS_BUILD_TESTS */
3447 /** @} end of sysdeps */