27 #include "dbus-internals.h"
28 #include "dbus-sysdeps.h"
29 #include "dbus-sysdeps-unix.h"
30 #include "dbus-threads.h"
31 #include "dbus-protocol.h"
32 #include "dbus-transport.h"
33 #include "dbus-string.h"
34 #include "dbus-userdb.h"
35 #include "dbus-list.h"
36 #include "dbus-credentials.h"
37 #include "dbus-nonce.h"
39 #include <sys/types.h>
46 #include <sys/socket.h>
55 #include <netinet/in.h>
58 #include <arpa/inet.h>
72 #ifdef HAVE_GETPEERUCRED
83 #include "sd-daemon.h"
94 #define AI_ADDRCONFIG 0
97 #ifndef HAVE_SOCKLEN_T
101 #if defined (__sun) || defined (__sun__)
114 # define CMSG_ALIGN(len) _CMSG_DATA_ALIGN (len)
117 # define CMSG_ALIGN(len) (((len) + sizeof (long) - 1) & \
118 ~(sizeof (long) - 1))
123 # define CMSG_SPACE(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + \
128 # define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
134 _dbus_open_socket (
int *fd_p,
143 *fd_p = socket (domain, type | SOCK_CLOEXEC, protocol);
144 cloexec_done = *fd_p >= 0;
147 if (*fd_p < 0 && (errno == EINVAL || errno == EPROTOTYPE))
150 *fd_p = socket (domain, type, protocol);
162 _dbus_verbose (
"socket fd %d opened\n", *fd_p);
169 "Failed to open socket: %s",
170 _dbus_strerror (errno));
186 _dbus_open_unix_socket (
int *fd,
189 return _dbus_open_socket(fd, PF_UNIX, SOCK_STREAM, 0, error);
240 #if HAVE_DECL_MSG_NOSIGNAL
244 data = _dbus_string_get_const_data_len (buffer, start, len);
248 bytes_written = send (fd, data, len, MSG_NOSIGNAL);
250 if (bytes_written < 0 && errno == EINTR)
253 return bytes_written;
278 #ifndef HAVE_UNIX_FD_PASSING
296 start = _dbus_string_get_length (buffer);
316 m.msg_controllen = CMSG_SPACE(*n_fds *
sizeof(
int));
320 m.msg_control = alloca(m.msg_controllen);
321 memset(m.msg_control, 0, m.msg_controllen);
327 m.msg_controllen = CMSG_LEN (*n_fds *
sizeof(
int));
331 bytes_read = recvmsg(fd, &m, 0
332 #ifdef MSG_CMSG_CLOEXEC
353 if (m.msg_flags & MSG_CTRUNC)
365 for (cm = CMSG_FIRSTHDR(&m); cm; cm = CMSG_NXTHDR(&m, cm))
366 if (cm->cmsg_level == SOL_SOCKET && cm->cmsg_type == SCM_RIGHTS)
369 int *payload = (
int *) CMSG_DATA (cm);
370 size_t payload_len_bytes = (cm->cmsg_len - CMSG_LEN (0));
371 size_t payload_len_fds = payload_len_bytes /
sizeof (int);
377 _DBUS_STATIC_ASSERT (
sizeof (
size_t) >=
sizeof (
int));
379 if (_DBUS_LIKELY (payload_len_fds <= (
size_t) *n_fds))
382 fds_to_use = payload_len_fds;
390 fds_to_use = (size_t) *n_fds;
395 for (i = fds_to_use; i < payload_len_fds; i++)
401 memcpy (fds, payload, fds_to_use *
sizeof (
int));
405 *n_fds = (int) fds_to_use;
410 for (i = 0; i < fds_to_use; i++)
433 _dbus_write_socket_with_unix_fds(
int fd,
440 #ifndef HAVE_UNIX_FD_PASSING
449 return _dbus_write_socket_with_unix_fds_two(fd, buffer, start, len,
NULL, 0, 0, fds, n_fds);
454 _dbus_write_socket_with_unix_fds_two(
int fd,
464 #ifndef HAVE_UNIX_FD_PASSING
472 buffer1, start1, len1,
473 buffer2, start2, len2);
486 iov[0].iov_base = (
char*) _dbus_string_get_const_data_len (buffer1, start1, len1);
487 iov[0].iov_len = len1;
491 iov[1].iov_base = (
char*) _dbus_string_get_const_data_len (buffer2, start2, len2);
492 iov[1].iov_len = len2;
497 m.msg_iovlen = buffer2 ? 2 : 1;
501 m.msg_controllen = CMSG_SPACE(n_fds *
sizeof(
int));
502 m.msg_control = alloca(m.msg_controllen);
503 memset(m.msg_control, 0, m.msg_controllen);
505 cm = CMSG_FIRSTHDR(&m);
506 cm->cmsg_level = SOL_SOCKET;
507 cm->cmsg_type = SCM_RIGHTS;
508 cm->cmsg_len = CMSG_LEN(n_fds *
sizeof(
int));
509 memcpy(CMSG_DATA(cm), fds, n_fds *
sizeof(
int));
514 bytes_written = sendmsg (fd, &m, 0
515 #
if HAVE_DECL_MSG_NOSIGNAL
520 if (bytes_written < 0 && errno == EINTR)
524 if (bytes_written > 0)
528 return bytes_written;
554 #if HAVE_DECL_MSG_NOSIGNAL
555 struct iovec vectors[2];
567 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
570 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
578 vectors[0].iov_base = (
char*) data1;
579 vectors[0].iov_len = len1;
580 vectors[1].iov_base = (
char*) data2;
581 vectors[1].iov_len = len2;
585 m.msg_iovlen = data2 ? 2 : 1;
589 bytes_written = sendmsg (fd, &m, MSG_NOSIGNAL);
591 if (bytes_written < 0 && errno == EINTR)
594 return bytes_written;
598 buffer2, start2, len2);
603 _dbus_socket_is_invalid (
int fd)
635 start = _dbus_string_get_length (buffer);
647 bytes_read = read (fd, data, count);
693 data = _dbus_string_get_const_data_len (buffer, start, len);
697 bytes_written = write (fd, data, len);
699 if (bytes_written < 0 && errno == EINTR)
703 if (bytes_written > 0)
707 return bytes_written;
747 struct iovec vectors[2];
752 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
755 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
763 vectors[0].iov_base = (
char*) data1;
764 vectors[0].iov_len = len1;
765 vectors[1].iov_base = (
char*) data2;
766 vectors[1].iov_len = len2;
770 bytes_written = writev (fd,
774 if (bytes_written < 0 && errno == EINTR)
777 return bytes_written;
784 if (ret1 == len1 && buffer2 !=
NULL)
798 #define _DBUS_MAX_SUN_PATH_LENGTH 99
836 struct sockaddr_un addr;
838 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
840 _dbus_verbose (
"connecting to unix socket %s abstract=%d\n",
844 if (!_dbus_open_unix_socket (&fd, error))
846 _DBUS_ASSERT_ERROR_IS_SET(error);
849 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
852 addr.sun_family = AF_UNIX;
853 path_len = strlen (path);
857 #ifdef HAVE_ABSTRACT_SOCKETS
858 addr.sun_path[0] =
'\0';
861 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
864 "Abstract socket name too long\n");
869 strncpy (&addr.sun_path[1], path, path_len);
873 "Operating system does not support abstract socket namespace\n");
880 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
883 "Socket name too long\n");
888 strncpy (addr.sun_path, path, path_len);
891 if (connect (fd, (
struct sockaddr*) &addr, _DBUS_STRUCT_OFFSET (
struct sockaddr_un, sun_path) + path_len) < 0)
895 "Failed to connect to socket %s: %s",
896 path, _dbus_strerror (errno));
902 if (!_dbus_set_fd_nonblocking (fd, error))
904 _DBUS_ASSERT_ERROR_IS_SET (error);
935 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
937 _dbus_verbose (
"connecting to process %s\n", path);
940 retval = socketpair (AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0, fds);
941 cloexec_done = (retval >= 0);
943 if (retval < 0 && (errno == EINVAL || errno == EPROTOTYPE))
946 retval = socketpair (AF_UNIX, SOCK_STREAM, 0, fds);
953 "Failed to create socket pair: %s",
954 _dbus_strerror (errno));
969 "Failed to fork() to call %s: %s",
970 path, _dbus_strerror (errno));
981 dup2 (fds[1], STDIN_FILENO);
982 dup2 (fds[1], STDOUT_FILENO);
984 if (fds[1] != STDIN_FILENO &&
985 fds[1] != STDOUT_FILENO)
995 fprintf (stderr,
"Failed to execute process %s: %s\n", path, _dbus_strerror (errno));
1003 if (!_dbus_set_fd_nonblocking (fds[0], error))
1005 _DBUS_ASSERT_ERROR_IS_SET (error);
1037 struct sockaddr_un addr;
1040 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1042 _dbus_verbose (
"listening on unix socket %s abstract=%d\n",
1045 if (!_dbus_open_unix_socket (&listen_fd, error))
1047 _DBUS_ASSERT_ERROR_IS_SET(error);
1050 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1053 addr.sun_family = AF_UNIX;
1054 path_len = strlen (path);
1058 #ifdef HAVE_ABSTRACT_SOCKETS
1062 addr.sun_path[0] =
'\0';
1065 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
1068 "Abstract socket name too long\n");
1073 strncpy (&addr.sun_path[1], path, path_len);
1077 "Operating system does not support abstract socket namespace\n");
1097 if (stat (path, &sb) == 0 &&
1098 S_ISSOCK (sb.st_mode))
1102 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
1105 "Abstract socket name too long\n");
1110 strncpy (addr.sun_path, path, path_len);
1113 if (bind (listen_fd, (
struct sockaddr*) &addr, _DBUS_STRUCT_OFFSET (
struct sockaddr_un, sun_path) + path_len) < 0)
1116 "Failed to bind socket \"%s\": %s",
1117 path, _dbus_strerror (errno));
1122 if (listen (listen_fd, 30 ) < 0)
1125 "Failed to listen on socket \"%s\": %s",
1126 path, _dbus_strerror (errno));
1131 if (!_dbus_set_fd_nonblocking (listen_fd, error))
1133 _DBUS_ASSERT_ERROR_IS_SET (error);
1141 if (!
abstract && chmod (path, 0777) < 0)
1142 _dbus_warn (
"Could not set mode 0777 on socket %s\n",
1166 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1168 n = sd_listen_fds (
TRUE);
1172 "Failed to acquire systemd socket: %s",
1173 _dbus_strerror (-n));
1180 "No socket received.");
1184 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1186 r = sd_is_socket (fd, AF_UNSPEC, SOCK_STREAM, 1);
1190 "Failed to verify systemd socket type: %s",
1191 _dbus_strerror (-r));
1198 "Passed socket has wrong type.");
1210 "Failed to allocate file handle array.");
1214 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1216 if (!_dbus_set_fd_nonblocking (fd, error))
1218 _DBUS_ASSERT_ERROR_IS_SET (error);
1222 new_fds[fd - SD_LISTEN_FDS_START] = fd;
1230 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1258 return _dbus_connect_tcp_socket_with_nonce (host, port, family, (
const char*)
NULL, error);
1262 _dbus_connect_tcp_socket_with_nonce (
const char *host,
1265 const char *noncefile,
1268 int saved_errno = 0;
1270 struct addrinfo hints;
1271 struct addrinfo *ai, *tmp;
1273 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1278 hints.ai_family = AF_UNSPEC;
1279 else if (!strcmp(family,
"ipv4"))
1280 hints.ai_family = AF_INET;
1281 else if (!strcmp(family,
"ipv6"))
1282 hints.ai_family = AF_INET6;
1287 "Unknown address family %s", family);
1290 hints.ai_protocol = IPPROTO_TCP;
1291 hints.ai_socktype = SOCK_STREAM;
1292 hints.ai_flags = AI_ADDRCONFIG;
1294 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0)
1298 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1299 host, port, gai_strerror(res), res);
1306 if (!_dbus_open_socket (&fd, tmp->ai_family, SOCK_STREAM, 0, error))
1309 _DBUS_ASSERT_ERROR_IS_SET(error);
1312 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1314 if (connect (fd, (
struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) < 0)
1316 saved_errno = errno;
1331 "Failed to connect to socket \"%s:%s\" %s",
1332 host, port, _dbus_strerror(saved_errno));
1336 if (noncefile !=
NULL)
1341 ret = _dbus_send_nonce (fd, &noncefileStr, error);
1351 if (!_dbus_set_fd_nonblocking (fd, error))
1385 int nlisten_fd = 0, *listen_fd =
NULL, res, i;
1386 struct addrinfo hints;
1387 struct addrinfo *ai, *tmp;
1388 unsigned int reuseaddr;
1391 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1396 hints.ai_family = AF_UNSPEC;
1397 else if (!strcmp(family,
"ipv4"))
1398 hints.ai_family = AF_INET;
1399 else if (!strcmp(family,
"ipv6"))
1400 hints.ai_family = AF_INET6;
1405 "Unknown address family %s", family);
1409 hints.ai_protocol = IPPROTO_TCP;
1410 hints.ai_socktype = SOCK_STREAM;
1411 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
1413 redo_lookup_with_port:
1415 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai)
1419 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1420 host ? host :
"*", port, gai_strerror(res), res);
1427 int fd = -1, *newlisten_fd;
1428 if (!_dbus_open_socket (&fd, tmp->ai_family, SOCK_STREAM, 0, error))
1430 _DBUS_ASSERT_ERROR_IS_SET(error);
1433 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1436 if (setsockopt (fd, SOL_SOCKET, SO_REUSEADDR, &reuseaddr,
sizeof(reuseaddr))==-1)
1438 _dbus_warn (
"Failed to set socket option \"%s:%s\": %s",
1439 host ? host :
"*", port, _dbus_strerror (errno));
1442 if (bind (fd, (
struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) < 0)
1444 saved_errno = errno;
1446 if (saved_errno == EADDRINUSE)
1455 "Failed to bind socket \"%s:%s\": %s",
1456 host ? host :
"*", port, _dbus_strerror (saved_errno));
1460 if (listen (fd, 30 ) < 0)
1462 saved_errno = errno;
1465 "Failed to listen on socket \"%s:%s\": %s",
1466 host ? host :
"*", port, _dbus_strerror (saved_errno));
1470 newlisten_fd =
dbus_realloc(listen_fd,
sizeof(
int)*(nlisten_fd+1));
1473 saved_errno = errno;
1476 "Failed to allocate file handle array: %s",
1477 _dbus_strerror (saved_errno));
1480 listen_fd = newlisten_fd;
1481 listen_fd[nlisten_fd] = fd;
1484 if (!_dbus_string_get_length(retport))
1490 if (!port || !strcmp(port,
"0"))
1493 struct sockaddr_storage addr;
1497 addrlen =
sizeof(addr);
1498 result = getsockname(fd, (
struct sockaddr*) &addr, &addrlen);
1501 (res = getnameinfo ((
struct sockaddr*)&addr, addrlen,
NULL, 0,
1502 portbuf,
sizeof(portbuf),
1503 NI_NUMERICHOST)) != 0)
1506 "Failed to resolve port \"%s:%s\": %s (%s)",
1507 host ? host :
"*", port, gai_strerror(res), res);
1517 port = _dbus_string_get_const_data(retport);
1519 goto redo_lookup_with_port;
1540 "Failed to bind socket \"%s:%s\": %s",
1541 host ? host :
"*", port, _dbus_strerror (errno));
1545 for (i = 0 ; i < nlisten_fd ; i++)
1547 if (!_dbus_set_fd_nonblocking (listen_fd[i], error))
1560 for (i = 0 ; i < nlisten_fd ; i++)
1567 write_credentials_byte (
int server_fd,
1571 char buf[1] = {
'\0' };
1572 #if defined(HAVE_CMSGCRED)
1575 char cred[CMSG_SPACE (
sizeof (
struct cmsgcred))];
1586 msg.msg_control = (caddr_t) &cmsg;
1587 msg.msg_controllen = CMSG_SPACE (
sizeof (
struct cmsgcred));
1589 cmsg.hdr.cmsg_len = CMSG_LEN (
sizeof (
struct cmsgcred));
1590 cmsg.hdr.cmsg_level = SOL_SOCKET;
1591 cmsg.hdr.cmsg_type = SCM_CREDS;
1594 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1598 #if defined(HAVE_CMSGCRED)
1599 bytes_written = sendmsg (server_fd, &msg, 0
1600 #
if HAVE_DECL_MSG_NOSIGNAL
1608 if (bytes_written < 0 && errno == EINVAL)
1611 bytes_written = send (server_fd, buf, 1, 0
1612 #
if HAVE_DECL_MSG_NOSIGNAL
1618 if (bytes_written < 0 && errno == EINTR)
1621 if (bytes_written < 0)
1624 "Failed to write credentials byte: %s",
1625 _dbus_strerror (errno));
1628 else if (bytes_written == 0)
1631 "wrote zero bytes writing credentials byte");
1637 _dbus_verbose (
"wrote credentials byte\n");
1675 #ifdef HAVE_CMSGCRED
1678 char cred[CMSG_SPACE (
sizeof (
struct cmsgcred))];
1685 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1697 iov.iov_base = &buf;
1704 #if defined(HAVE_CMSGCRED)
1706 msg.msg_control = (caddr_t) &cmsg;
1707 msg.msg_controllen = CMSG_SPACE (
sizeof (
struct cmsgcred));
1711 bytes_read = recvmsg (client_fd, &msg, 0);
1724 "Failed to read credentials byte: %s",
1725 _dbus_strerror (errno));
1728 else if (bytes_read == 0)
1734 "Failed to read credentials byte (zero-length read)");
1737 else if (buf !=
'\0')
1740 "Credentials byte was not nul");
1744 _dbus_verbose (
"read credentials byte\n");
1757 struct sockpeercred cr;
1761 int cr_len =
sizeof (cr);
1763 if (getsockopt (client_fd, SOL_SOCKET, SO_PEERCRED, &cr, &cr_len) == 0 &&
1764 cr_len ==
sizeof (cr))
1771 _dbus_verbose (
"Failed to getsockopt() credentials, returned len %d/%d: %s\n",
1772 cr_len, (
int)
sizeof (cr), _dbus_strerror (errno));
1774 #elif defined(HAVE_CMSGCRED)
1783 struct cmsgcred *cred;
1784 struct cmsghdr *cmsgp;
1786 for (cmsgp = CMSG_FIRSTHDR (&msg);
1788 cmsgp = CMSG_NXTHDR (&msg, cmsgp))
1790 if (cmsgp->cmsg_type == SCM_CREDS &&
1791 cmsgp->cmsg_level == SOL_SOCKET &&
1792 cmsgp->cmsg_len >= CMSG_LEN (
sizeof (
struct cmsgcred)))
1794 cred = (
struct cmsgcred *) CMSG_DATA (cmsgp);
1795 pid_read = cred->cmcred_pid;
1796 uid_read = cred->cmcred_euid;
1801 #elif defined(HAVE_GETPEERUCRED)
1805 ucred_t * ucred =
NULL;
1806 if (getpeerucred (client_fd, &ucred) == 0)
1808 pid_read = ucred_getpid (ucred);
1809 uid_read = ucred_geteuid (ucred);
1812 adt_session_data_t *adth =
NULL;
1813 adt_export_data_t *data =
NULL;
1815 if (adt_start_session (&adth,
NULL, 0) || (adth ==
NULL))
1817 _dbus_verbose (
"Failed to adt_start_session(): %s\n", _dbus_strerror (errno));
1821 if (adt_set_from_ucred (adth, ucred, ADT_NEW))
1823 _dbus_verbose (
"Failed to adt_set_from_ucred(): %s\n", _dbus_strerror (errno));
1827 size = adt_export_session_data (adth, &data);
1830 _dbus_verbose (
"Failed to adt_export_session_data(): %s\n", _dbus_strerror (errno));
1838 (void) adt_end_session (adth);
1844 _dbus_verbose (
"Failed to getpeerucred() credentials: %s\n", _dbus_strerror (errno));
1854 #elif defined(HAVE_GETPEEREID)
1872 if (getpeereid (client_fd, &euid, &egid) == 0)
1878 _dbus_verbose (
"Failed to getpeereid() credentials: %s\n", _dbus_strerror (errno));
1882 #warning Socket credentials not supported on this Unix OS
1883 #warning Please tell https://bugs.freedesktop.org/enter_bug.cgi?product=DBus
1889 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
1890 defined(__linux__) || \
1891 defined(__OpenBSD__) || \
1893 # error Credentials passing not working on this OS is a regression!
1896 _dbus_verbose (
"Socket credentials not supported on this OS\n");
1900 _dbus_verbose (
"Credentials:"
1911 _DBUS_SET_OOM (error);
1920 _DBUS_SET_OOM (error);
1949 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1951 if (write_credentials_byte (server_fd, error))
1970 struct sockaddr addr;
1976 addrlen =
sizeof (addr);
1986 client_fd = accept4 (listen_fd, &addr, &addrlen, SOCK_CLOEXEC);
1987 cloexec_done = client_fd >= 0;
1989 if (client_fd < 0 && (errno == ENOSYS || errno == EINVAL))
1992 client_fd = accept (listen_fd, &addr, &addrlen);
2001 _dbus_verbose (
"client fd %d accepted\n", client_fd);
2024 const char *directory;
2027 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2029 directory = _dbus_string_get_const_data (dir);
2031 if (stat (directory, &sb) < 0)
2034 "%s", _dbus_strerror (errno));
2039 if (sb.st_uid != geteuid ())
2042 "%s directory is owned by user %lu, not %lu",
2044 (
unsigned long) sb.st_uid,
2045 (
unsigned long) geteuid ());
2049 if ((S_IROTH & sb.st_mode) || (S_IWOTH & sb.st_mode) ||
2050 (S_IRGRP & sb.st_mode) || (S_IWGRP & sb.st_mode))
2053 "%s directory is not private to the user", directory);
2061 fill_user_info_from_passwd (
struct passwd *p,
2068 info->
uid = p->pw_uid;
2089 const char *username_c;
2102 if (username !=
NULL)
2103 username_c = _dbus_string_get_const_data (username);
2112 #if defined (HAVE_POSIX_GETPWNAM_R) || defined (HAVE_NONPOSIX_GETPWNAM_R)
2118 struct passwd p_str;
2121 buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
2127 if ((
long) buflen <= 0)
2141 #ifdef HAVE_POSIX_GETPWNAM_R
2143 result = getpwuid_r (uid, &p_str, buf, buflen,
2146 result = getpwnam_r (username_c, &p_str, buf, buflen,
2150 p = getpwuid_r (uid, &p_str, buf, buflen);
2152 p = getpwnam_r (username_c, &p_str, buf, buflen);
2156 if (result == ERANGE && buflen < 512 * 1024)
2166 if (result == 0 && p == &p_str)
2168 if (!fill_user_info_from_passwd (p, info, error))
2178 "User \"%s\" unknown or no memory to allocate password entry\n",
2179 username_c ? username_c :
"???");
2180 _dbus_verbose (
"User %s unknown\n", username_c ? username_c :
"???");
2193 p = getpwnam (username_c);
2197 if (!fill_user_info_from_passwd (p, info, error))
2205 "User \"%s\" unknown or no memory to allocate password entry\n",
2206 username_c ? username_c :
"???");
2207 _dbus_verbose (
"User %s unknown\n", username_c ? username_c :
"???");
2216 #ifdef HAVE_GETGROUPLIST
2221 int initial_buf_count;
2223 initial_buf_count = 17;
2224 buf_count = initial_buf_count;
2232 if (getgrouplist (username_c,
2234 buf, &buf_count) < 0)
2250 if (buf_count == initial_buf_count)
2265 if (getgrouplist (username_c, info->
primary_gid, buf, &buf_count) < 0)
2269 _dbus_warn (
"It appears that username \"%s\" is in more than %d groups.\nProceeding with just the first %d groups.",
2270 username_c, buf_count, buf_count);
2276 "Failed to get groups for username \"%s\" primary GID "
2279 _dbus_strerror (errno));
2294 for (i = 0; i < buf_count; ++i)
2317 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2322 _DBUS_ASSERT_ERROR_IS_SET (error);
2356 return fill_user_info (info, uid,
2458 if (_dbus_string_get_length (uid_str) == 0)
2460 _dbus_verbose (
"UID string was zero length\n");
2469 _dbus_verbose (
"could not parse string as a UID\n");
2473 if (end != _dbus_string_get_length (uid_str))
2475 _dbus_verbose (
"string contained trailing stuff after UID\n");
2490 static pthread_mutex_t atomic_mutex = PTHREAD_MUTEX_INITIALIZER;
2503 return __sync_add_and_fetch(&atomic->
value, 1)-1;
2507 pthread_mutex_lock (&atomic_mutex);
2508 res = atomic->
value;
2510 pthread_mutex_unlock (&atomic_mutex);
2526 return __sync_sub_and_fetch(&atomic->
value, 1)+1;
2530 pthread_mutex_lock (&atomic_mutex);
2531 res = atomic->
value;
2533 pthread_mutex_unlock (&atomic_mutex);
2550 __sync_synchronize ();
2551 return atomic->
value;
2555 pthread_mutex_lock (&atomic_mutex);
2556 res = atomic->
value;
2557 pthread_mutex_unlock (&atomic_mutex);
2574 int timeout_milliseconds)
2576 #if defined(HAVE_POLL) && !defined(BROKEN_POLL)
2587 sizeof (
DBusPollFD) ==
sizeof (
struct pollfd) &&
2589 _DBUS_STRUCT_OFFSET (
struct pollfd, fd) &&
2591 _DBUS_STRUCT_OFFSET (
struct pollfd, events) &&
2593 _DBUS_STRUCT_OFFSET (
struct pollfd, revents))
2595 return poll ((
struct pollfd*) fds,
2597 timeout_milliseconds);
2604 _dbus_warn (
"didn't implement poll() properly for this system yet\n");
2609 fd_set read_set, write_set, err_set;
2615 FD_ZERO (&read_set);
2616 FD_ZERO (&write_set);
2619 for (i = 0; i < n_fds; i++)
2624 FD_SET (fdp->
fd, &read_set);
2627 FD_SET (fdp->
fd, &write_set);
2629 FD_SET (fdp->
fd, &err_set);
2631 max_fd = MAX (max_fd, fdp->
fd);
2634 tv.tv_sec = timeout_milliseconds / 1000;
2635 tv.tv_usec = (timeout_milliseconds % 1000) * 1000;
2637 ready = select (max_fd + 1, &read_set, &write_set, &err_set,
2638 timeout_milliseconds < 0 ?
NULL : &tv);
2642 for (i = 0; i < n_fds; i++)
2648 if (FD_ISSET (fdp->
fd, &read_set))
2651 if (FD_ISSET (fdp->
fd, &write_set))
2654 if (FD_ISSET (fdp->
fd, &err_set))
2674 #ifdef HAVE_MONOTONIC_CLOCK
2676 clock_gettime (CLOCK_MONOTONIC, &ts);
2679 *tv_sec = ts.tv_sec;
2681 *tv_usec = ts.tv_nsec / 1000;
2685 gettimeofday (&t,
NULL);
2690 *tv_usec = t.tv_usec;
2707 gettimeofday (&t,
NULL);
2712 *tv_usec = t.tv_usec;
2727 const char *filename_c;
2729 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2731 filename_c = _dbus_string_get_const_data (filename);
2733 if (mkdir (filename_c, 0700) < 0)
2735 if (errno == EEXIST)
2739 "Failed to create directory %s: %s\n",
2740 filename_c, _dbus_strerror (errno));
2764 if (_dbus_string_get_length (dir) == 0 ||
2765 _dbus_string_get_length (next_component) == 0)
2768 dir_ends_in_slash =
'/' == _dbus_string_get_byte (dir,
2769 _dbus_string_get_length (dir) - 1);
2771 file_starts_with_slash =
'/' == _dbus_string_get_byte (next_component, 0);
2773 if (dir_ends_in_slash && file_starts_with_slash)
2777 else if (!(dir_ends_in_slash || file_starts_with_slash))
2784 _dbus_string_get_length (dir));
2788 #define NANOSECONDS_PER_SECOND 1000000000
2790 #define MICROSECONDS_PER_SECOND 1000000
2792 #define MILLISECONDS_PER_SECOND 1000
2794 #define NANOSECONDS_PER_MILLISECOND 1000000
2796 #define MICROSECONDS_PER_MILLISECOND 1000
2805 #ifdef HAVE_NANOSLEEP
2806 struct timespec req;
2807 struct timespec rem;
2809 req.tv_sec = milliseconds / MILLISECONDS_PER_SECOND;
2810 req.tv_nsec = (milliseconds % MILLISECONDS_PER_SECOND) * NANOSECONDS_PER_MILLISECOND;
2814 while (nanosleep (&req, &rem) < 0 && errno == EINTR)
2816 #elif defined (HAVE_USLEEP)
2817 usleep (milliseconds * MICROSECONDS_PER_MILLISECOND);
2819 sleep (MAX (milliseconds / 1000, 1));
2824 _dbus_generate_pseudorandom_bytes (
DBusString *str,
2830 old_len = _dbus_string_get_length (str);
2863 old_len = _dbus_string_get_length (str);
2867 fd = open (
"/dev/urandom", O_RDONLY);
2869 return _dbus_generate_pseudorandom_bytes (str, n_bytes);
2871 _dbus_verbose (
"/dev/urandom fd %d opened\n", fd);
2873 if (
_dbus_read (fd, str, n_bytes) != n_bytes)
2877 return _dbus_generate_pseudorandom_bytes (str, n_bytes);
2880 _dbus_verbose (
"Read %d bytes from /dev/urandom\n",
2908 _dbus_strerror (
int error_number)
2912 msg = strerror (error_number);
2925 signal (SIGPIPE, SIG_IGN);
2940 val = fcntl (fd, F_GETFD, 0);
2947 fcntl (fd, F_SETFD, val);
2961 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2970 "Could not close fd %d", fd);
2991 #ifdef F_DUPFD_CLOEXEC
2994 new_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
2995 cloexec_done = new_fd >= 0;
2997 if (new_fd < 0 && errno == EINVAL)
3000 new_fd = fcntl(fd, F_DUPFD, 3);
3006 "Could not duplicate fd %d", fd);
3010 #ifdef F_DUPFD_CLOEXEC
3028 _dbus_set_fd_nonblocking (
int fd,
3033 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3035 val = fcntl (fd, F_GETFL, 0);
3039 "Failed to get flags from file descriptor %d: %s",
3040 fd, _dbus_strerror (errno));
3041 _dbus_verbose (
"Failed to get flags for fd %d: %s\n", fd,
3042 _dbus_strerror (errno));
3046 if (fcntl (fd, F_SETFL, val | O_NONBLOCK) < 0)
3049 "Failed to set nonblocking flag of file descriptor %d: %s",
3050 fd, _dbus_strerror (errno));
3051 _dbus_verbose (
"Failed to set fd %d nonblocking: %s\n",
3052 fd, _dbus_strerror (errno));
3068 #if defined (HAVE_BACKTRACE) && defined (DBUS_BUILT_R_DYNAMIC)
3074 bt_size = backtrace (bt, 500);
3076 syms = backtrace_symbols (bt, bt_size);
3082 fprintf (stderr,
" %s\n", syms[i]);
3088 #elif defined (HAVE_BACKTRACE) && ! defined (DBUS_BUILT_R_DYNAMIC)
3089 fprintf (stderr,
" D-Bus not built with -rdynamic so unable to print a backtrace\n");
3091 fprintf (stderr,
" D-Bus not compiled with backtrace support so unable to print a backtrace\n");
3113 #ifdef HAVE_SOCKETPAIR
3120 retval = socketpair(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0, fds);
3121 cloexec_done = retval >= 0;
3123 if (retval < 0 && (errno == EINVAL || errno == EPROTOTYPE))
3126 retval = socketpair(AF_UNIX, SOCK_STREAM, 0, fds);
3132 "Could not create full-duplex pipe");
3136 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3147 (!_dbus_set_fd_nonblocking (fds[0],
NULL) ||
3148 !_dbus_set_fd_nonblocking (fds[1],
NULL)))
3151 "Could not set full-duplex pipe nonblocking");
3162 _dbus_verbose (
"full-duplex pipe %d <-> %d\n",
3167 _dbus_warn (
"_dbus_full_duplex_pipe() not implemented on this OS\n");
3169 "_dbus_full_duplex_pipe() not implemented on this OS");
3186 char static_buf[1024];
3187 int bufsize =
sizeof (static_buf);
3191 DBUS_VA_COPY (args_copy, args);
3192 len = vsnprintf (static_buf, bufsize, format, args_copy);
3209 DBUS_VA_COPY (args_copy, args);
3211 if (vsnprintf (static_buf, 1, format, args_copy) == 1)
3230 DBUS_VA_COPY (args_copy, args);
3231 len = vsnprintf (buf, bufsize, format, args_copy);
3256 static const char* tmpdir =
NULL;
3268 tmpdir = getenv(
"TMPDIR");
3274 tmpdir = getenv(
"TMP");
3276 tmpdir = getenv(
"TEMP");
3290 #if defined(DBUS_ENABLE_X11_AUTOLAUNCH) || defined(DBUS_ENABLE_LAUNCHD)
3311 _read_subprocess_line_argv (
const char *progpath,
3317 int result_pipe[2] = { -1, -1 };
3318 int errors_pipe[2] = { -1, -1 };
3325 sigset_t new_set, old_set;
3327 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3334 sigemptyset (&new_set);
3335 sigaddset (&new_set, SIGCHLD);
3336 sigprocmask (SIG_BLOCK, &new_set, &old_set);
3338 orig_len = _dbus_string_get_length (result);
3342 if (pipe (result_pipe) < 0)
3345 "Failed to create a pipe to call %s: %s",
3346 progpath, _dbus_strerror (errno));
3347 _dbus_verbose (
"Failed to create a pipe to call %s: %s\n",
3348 progpath, _dbus_strerror (errno));
3351 if (pipe (errors_pipe) < 0)
3354 "Failed to create a pipe to call %s: %s",
3355 progpath, _dbus_strerror (errno));
3356 _dbus_verbose (
"Failed to create a pipe to call %s: %s\n",
3357 progpath, _dbus_strerror (errno));
3365 "Failed to fork() to call %s: %s",
3366 progpath, _dbus_strerror (errno));
3367 _dbus_verbose (
"Failed to fork() to call %s: %s\n",
3368 progpath, _dbus_strerror (errno));
3377 fd = open (
"/dev/null", O_RDWR);
3382 _dbus_verbose (
"/dev/null fd %d opened\n", fd);
3388 if (dup2 (fd, 0) == -1)
3390 if (dup2 (result_pipe[
WRITE_END], 1) == -1)
3392 if (dup2 (errors_pipe[WRITE_END], 2) == -1)
3397 sigprocmask (SIG_SETMASK, &old_set,
NULL);
3400 if (progpath[0] ==
'/')
3402 execv (progpath, argv);
3411 execvp (strrchr (progpath,
'/')+1, argv);
3414 execvp (progpath, argv);
3421 close (result_pipe[WRITE_END]);
3422 close (errors_pipe[WRITE_END]);
3436 ret = waitpid (pid, &status, 0);
3438 while (ret == -1 && errno == EINTR);
3442 if (!WIFEXITED (status) || WEXITSTATUS (status) != 0 )
3448 _DBUS_SET_OOM (error);
3460 if (_dbus_string_get_length (&error_message) > 0)
3462 "%s terminated abnormally with the following error: %s",
3463 progpath, _dbus_string_get_data (&error_message));
3466 "%s terminated abnormally without any error message",
3474 sigprocmask (SIG_SETMASK, &old_set,
NULL);
3477 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3479 _DBUS_ASSERT_ERROR_IS_SET (error);
3481 if (result_pipe[0] != -1)
3482 close (result_pipe[0]);
3483 if (result_pipe[1] != -1)
3484 close (result_pipe[1]);
3485 if (errors_pipe[0] != -1)
3486 close (errors_pipe[0]);
3487 if (errors_pipe[1] != -1)
3488 close (errors_pipe[1]);
3511 #ifdef DBUS_ENABLE_X11_AUTOLAUNCH
3515 const char *display;
3524 "Unable to autolaunch when setuid");
3528 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3536 if (display ==
NULL || display[0] ==
'\0')
3539 "Unable to autolaunch a dbus-daemon without a $DISPLAY for X11");
3545 _DBUS_SET_OOM (error);
3551 _DBUS_SET_OOM (error);
3556 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
3558 argv[i] = TEST_BUS_LAUNCH_BINARY;
3561 argv[i] = DBUS_BINDIR
"/dbus-launch";
3563 argv[i] =
"--autolaunch";
3565 argv[i] = _dbus_string_get_data (&uuid);
3567 argv[i] =
"--binary-syntax";
3569 argv[i] =
"--close-stderr";
3576 retval = _read_subprocess_line_argv (argv[0],
3578 argv, address, error);
3585 "Using X11 for dbus-daemon autolaunch was disabled at compile time, "
3586 "set your DBUS_SESSION_BUS_ADDRESS instead");
3639 if (!create_if_not_found)
3658 const char *launchd_env_var,
3661 #ifdef DBUS_ENABLE_LAUNCHD
3665 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3670 "Unable to find launchd socket when setuid");
3675 argv[i] =
"launchctl";
3679 argv[i] = (
char*)launchd_env_var;
3686 if (!_read_subprocess_line_argv(argv[0],
TRUE, argv, socket_path, error))
3692 if (_dbus_string_get_length(socket_path) == 0)
3702 "can't lookup socket from launchd; launchd support not compiled in");
3707 #ifdef DBUS_ENABLE_LAUNCHD
3717 "Unable to find launchd socket when setuid");
3723 _DBUS_SET_OOM (error);
3738 "launchd did not provide a socket path, "
3739 "verify that org.freedesktop.dbus-session.plist is loaded!");
3745 _DBUS_SET_OOM (error);
3750 _dbus_string_get_length (address)))
3752 _DBUS_SET_OOM (error);
3786 #ifdef DBUS_ENABLE_LAUNCHD
3788 return _dbus_lookup_session_address_launchd (address, error);
3845 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
3847 const char *
override;
3850 if (
override !=
NULL && *
override !=
'\0')
3856 _dbus_verbose (
"Using fake homedir for testing: %s\n",
3857 _dbus_string_get_const_data (&homedir));
3864 if (!already_warned)
3866 _dbus_warn (
"Using your real home directory for testing, set DBUS_TEST_HOMEDIR to avoid\n");
3867 already_warned =
TRUE;
3879 directory, _dbus_string_get_length (directory))) {
3893 _dbus_daemon_publish_session_bus_address (
const char* addr,
3901 _dbus_daemon_unpublish_session_bus_address (
void)
3915 return errno == EAGAIN || errno == EWOULDBLOCK;
3929 const char *filename_c;
3931 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3933 filename_c = _dbus_string_get_const_data (filename);
3935 if (rmdir (filename_c) != 0)
3938 "Failed to remove directory %s: %s\n",
3939 filename_c, _dbus_strerror (errno));
3959 struct sockaddr_storage storage;
3960 struct sockaddr_un un;
3963 socklen_t sa_len =
sizeof(sa_buf);
3967 if (getsockname(fd, &sa_buf.sa, &sa_len) < 0)
3970 return sa_buf.sa.sa_family == AF_UNIX;
3993 d = opendir (
"/proc/self/fd");
4003 k = readdir_r (d, &buf, &de);
4007 if (de->d_name[0] ==
'.')
4011 l = strtol (de->d_name, &e, 10);
4012 if (errno != 0 || e ==
NULL || *e !=
'\0')
4019 if (fd == dirfd (d))
4030 maxfds = sysconf (_SC_OPEN_MAX);
4039 for (i = 3; i < maxfds; i++)
4058 #if 0 && defined(HAVE_LIBC_ENABLE_SECURE)
4061 extern int __libc_enable_secure;
4062 return __libc_enable_secure;
4064 #elif defined(HAVE_ISSETUGID)
4066 return issetugid ();
4068 uid_t ruid, euid, suid;
4069 gid_t rgid, egid, sgid;
4076 if (_DBUS_UNLIKELY (!check_setuid_initialised))
4078 #ifdef HAVE_GETRESUID
4079 if (getresuid (&ruid, &euid, &suid) != 0 ||
4080 getresgid (&rgid, &egid, &sgid) != 0)
4083 suid = ruid = getuid ();
4084 sgid = rgid = getgid ();
4089 check_setuid_initialised =
TRUE;
4090 is_setuid = (ruid != euid || ruid != suid ||
4091 rgid != egid || rgid != sgid);
4112 struct sockaddr_storage storage;
4113 struct sockaddr_un un;
4114 struct sockaddr_in ipv4;
4115 struct sockaddr_in6 ipv6;
4117 char hostip[INET6_ADDRSTRLEN];
4118 int size =
sizeof (socket);
4121 if (getsockname (fd, &socket.sa, &size))
4124 switch (socket.sa.sa_family)
4127 if (socket.un.sun_path[0]==
'\0')
4143 if (inet_ntop (AF_INET, &socket.ipv4.sin_addr, hostip, sizeof (hostip)))
4145 hostip, ntohs (socket.ipv4.sin_port)))
4151 if (inet_ntop (AF_INET6, &socket.ipv6.sin6_addr, hostip, sizeof (hostip)))
4153 ntohs (socket.ipv6.sin6_port)) &&
4161 "Failed to read address from socket: Unknown socket type.");
4167 "Failed to open socket: %s",
4168 _dbus_strerror (errno));
dbus_bool_t _dbus_string_append(DBusString *str, const char *buffer)
Appends a nul-terminated C-style string to a DBusString.
dbus_bool_t _dbus_string_parse_int(const DBusString *str, int start, long *value_return, int *end_return)
Parses an integer contained in a DBusString.
An atomic integer safe to increment or decrement from multiple threads.
dbus_uid_t _dbus_credentials_get_unix_uid(DBusCredentials *credentials)
Gets the UNIX user ID in the credentials, or DBUS_UID_UNSET if the credentials object doesn't contain...
dbus_bool_t _dbus_string_append_uint(DBusString *str, unsigned long value)
Appends an unsigned integer to a DBusString.
dbus_int32_t _dbus_atomic_get(DBusAtomic *atomic)
Atomically get the value of an integer.
#define NULL
A null pointer, defined appropriately for C or C++.
#define DBUS_ERROR_SPAWN_EXEC_FAILED
While starting a new process, the exec() call failed.
volatile dbus_int32_t value
Value of the atomic integer.
dbus_bool_t _dbus_check_dir_is_private_to_user(DBusString *dir, DBusError *error)
Checks to make sure the given directory is private to the user.
#define _DBUS_POLLHUP
Hung up.
void * dbus_realloc(void *memory, size_t bytes)
Resizes a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
dbus_bool_t _dbus_string_lengthen(DBusString *str, int additional_length)
Makes a string longer by the given number of bytes.
void dbus_free(void *memory)
Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
dbus_bool_t _dbus_delete_directory(const DBusString *filename, DBusError *error)
Removes a directory; Directory must be empty.
dbus_bool_t _dbus_socket_can_pass_unix_fd(int fd)
Checks whether file descriptors may be passed via the socket.
#define _DBUS_POLLNVAL
Invalid request: fd not open.
int _dbus_write(int fd, const DBusString *buffer, int start, int len)
Thin wrapper around the write() system call that writes a part of a DBusString and handles EINTR for ...
#define DBUS_ERROR_NOT_SUPPORTED
Requested operation isn't supported (like ENOSYS on UNIX).
dbus_bool_t _dbus_append_address_from_socket(int fd, DBusString *address, DBusError *error)
Read the address from the socket and append it to the string.
#define dbus_new(type, count)
Safe macro for using dbus_malloc().
#define DBUS_GID_FORMAT
an appropriate printf format for dbus_gid_t
#define DBUS_PID_FORMAT
an appropriate printf format for dbus_pid_t
void _dbus_flush_caches(void)
Called when the bus daemon is signaled to reload its configuration; any caches should be nuked...
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
dbus_bool_t _dbus_full_duplex_pipe(int *fd1, int *fd2, dbus_bool_t blocking, DBusError *error)
Creates a full-duplex pipe (as in socketpair()).
int _dbus_write_socket_two(int fd, const DBusString *buffer1, int start1, int len1, const DBusString *buffer2, int start2, int len2)
Like _dbus_write_two() but only works on sockets and is thus available on Windows.
dbus_bool_t _dbus_check_setuid(void)
NOTE: If you modify this function, please also consider making the corresponding change in GLib...
void _dbus_user_database_flush_system(void)
Flushes the system global user database;.
void dbus_error_free(DBusError *error)
Frees an error that's been set (or just initialized), then reinitializes the error as in dbus_error_i...
dbus_gid_t primary_gid
GID.
#define _DBUS_POLLPRI
There is urgent data to read.
int _dbus_read_socket_with_unix_fds(int fd, DBusString *buffer, int count, int *fds, int *n_fds)
Like _dbus_read_socket() but also tries to read unix fds from the socket.
A portable struct pollfd wrapper.
A globally unique ID ; we have one for each DBusServer, and also one for each machine with libdbus in...
int _dbus_accept(int listen_fd)
Accepts a connection on a listening socket.
int _dbus_dup(int fd, DBusError *error)
Duplicates a file descriptor.
#define _DBUS_POLLIN
There is data to read.
char * _dbus_string_get_data_len(DBusString *str, int start, int len)
Gets a sub-portion of the raw character buffer from the string.
dbus_bool_t _dbus_string_init(DBusString *str)
Initializes a string.
dbus_pid_t _dbus_getpid(void)
Gets our process ID.
dbus_bool_t _dbus_append_user_from_current_process(DBusString *str)
Append to the string the identity we would like to have when we authenticate, on UNIX this is the cur...
#define DBUS_ERROR_IO_ERROR
Something went wrong reading or writing to a socket, for example.
void _dbus_string_shorten(DBusString *str, int length_to_remove)
Makes a string shorter by the given number of bytes.
short events
Events to poll for.
dbus_bool_t _dbus_string_copy(const DBusString *source, int start, DBusString *dest, int insert_at)
Like _dbus_string_move(), but does not delete the section of the source string that's copied to the d...
dbus_bool_t _dbus_read_credentials_socket(int client_fd, DBusCredentials *credentials, DBusError *error)
Reads a single byte which must be nul (an error occurs otherwise), and reads unix credentials if avai...
#define DBUS_PID_UNSET
an invalid PID used to represent an uninitialized dbus_pid_t field
void _dbus_credentials_clear(DBusCredentials *credentials)
Clear all credentials in the object.
#define DBUS_UID_UNSET
an invalid UID used to represent an uninitialized dbus_uid_t field
dbus_bool_t _dbus_parse_uid(const DBusString *uid_str, dbus_uid_t *uid)
Gets a UID from a UID string.
const char * _dbus_getenv(const char *varname)
Wrapper for getenv().
dbus_bool_t _dbus_get_local_machine_uuid_encoded(DBusString *uuid_str)
Gets the hex-encoded UUID of the machine this function is executed on.
dbus_bool_t _dbus_get_autolaunch_address(const char *scope, DBusString *address, DBusError *error)
Returns the address of a new session bus.
const char * _dbus_error_from_errno(int error_number)
Converts a UNIX errno, or Windows errno or WinSock error value into a DBusError name.
dbus_bool_t _dbus_user_info_fill(DBusUserInfo *info, const DBusString *username, DBusError *error)
Gets user info for the given username.
dbus_bool_t _dbus_homedir_from_uid(dbus_uid_t uid, DBusString *homedir)
Gets the home directory for the given user.
void _dbus_get_monotonic_time(long *tv_sec, long *tv_usec)
Get current time, as in gettimeofday().
unsigned long dbus_pid_t
A process ID.
dbus_gid_t * group_ids
Groups IDs, including above primary group.
dbus_int32_t _dbus_atomic_dec(DBusAtomic *atomic)
Atomically decrement an integer.
void _dbus_fd_set_close_on_exec(intptr_t fd)
Sets the file descriptor to be close on exec.
dbus_bool_t _dbus_lookup_launchd_socket(DBusString *socket_path, const char *launchd_env_var, DBusError *error)
quries launchd for a specific env var which holds the socket path.
void _dbus_get_real_time(long *tv_sec, long *tv_usec)
Get current time, as in gettimeofday().
void * dbus_malloc(size_t bytes)
Allocates the given number of bytes, as with standard malloc().
dbus_bool_t _dbus_concat_dir_and_file(DBusString *dir, const DBusString *next_component)
Appends the given filename to the given directory.
void _dbus_close_all(void)
Closes all file descriptors except the first three (i.e.
dbus_bool_t _dbus_credentials_are_anonymous(DBusCredentials *credentials)
Checks whether a credentials object contains a user identity.
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
void _dbus_string_init_const(DBusString *str, const char *value)
Initializes a constant string.
int n_group_ids
Size of group IDs array.
int _dbus_poll(DBusPollFD *fds, int n_fds, int timeout_milliseconds)
Wrapper for poll().
#define _DBUS_POLLOUT
Writing now will not block.
void _dbus_warn(const char *format,...)
Prints a warning message to stderr.
dbus_bool_t _dbus_string_append_printf(DBusString *str, const char *format,...)
Appends a printf-style formatted string to the DBusString.
dbus_bool_t _dbus_append_keyring_directory_for_credentials(DBusString *directory, DBusCredentials *credentials)
Appends the directory in which a keyring for the given credentials should be stored.
int _dbus_read_socket(int fd, DBusString *buffer, int count)
Like _dbus_read(), but only works on sockets so is available on Windows.
Object representing an exception.
dbus_bool_t _dbus_address_append_escaped(DBusString *escaped, const DBusString *unescaped)
Appends an escaped version of one string to another string, using the D-Bus address escaping mechanis...
void _dbus_disable_sigpipe(void)
signal (SIGPIPE, SIG_IGN);
dbus_bool_t _dbus_send_credentials_socket(int server_fd, DBusError *error)
Sends a single nul byte with our UNIX credentials as ancillary data.
#define DBUS_ERROR_BAD_ADDRESS
A D-Bus bus address was malformed.
void dbus_set_error(DBusError *error, const char *name, const char *format,...)
Assigns an error name and message to a DBusError.
dbus_bool_t _dbus_credentials_add_adt_audit_data(DBusCredentials *credentials, void *audit_data, dbus_int32_t size)
Add ADT audit data to the credentials.
dbus_int32_t _dbus_atomic_inc(DBusAtomic *atomic)
Atomically increments an integer.
#define _DBUS_N_ELEMENTS(array)
Computes the number of elements in a fixed-size array using sizeof().
dbus_bool_t _dbus_close(int fd, DBusError *error)
Closes a file descriptor.
dbus_bool_t _dbus_create_directory(const DBusString *filename, DBusError *error)
Creates a directory; succeeds if the directory is created or already existed.
int _dbus_connect_exec(const char *path, char *const argv[], DBusError *error)
Creates a UNIX domain socket and connects it to the specified process to execute. ...
dbus_bool_t _dbus_string_append_byte(DBusString *str, unsigned char byte)
Appends a single byte to the string, returning FALSE if not enough memory.
#define _DBUS_UNLOCK(name)
Unlocks a global lock.
void _dbus_string_free(DBusString *str)
Frees a string created by _dbus_string_init().
#define DBUS_GID_UNSET
an invalid GID used to represent an uninitialized dbus_gid_t field
dbus_bool_t _dbus_credentials_add_from_current_process(DBusCredentials *credentials)
Adds the credentials of the current process to the passed-in credentials object.
#define TRUE
Expands to "1".
dbus_bool_t _dbus_credentials_add_pid(DBusCredentials *credentials, dbus_pid_t pid)
Add a UNIX process ID to the credentials.
#define DBUS_ERROR_FAILED
A generic error; "something went wrong" - see the error message for more.
#define READ_END
Helps remember which end of the pipe is which.
#define DBUS_UID_FORMAT
an appropriate printf format for dbus_uid_t
dbus_bool_t _dbus_read_uuid_file(const DBusString *filename, DBusGUID *uuid, dbus_bool_t create_if_not_found, DBusError *error)
Reads (and optionally writes) a uuid to a file.
char * homedir
Home directory.
dbus_uid_t _dbus_getuid(void)
Gets our UID.
const char * _dbus_get_tmpdir(void)
Gets the temporary files directory by inspecting the environment variables TMPDIR, TMP, and TEMP in that order.
unsigned long _dbus_pid_for_log(void)
The only reason this is separate from _dbus_getpid() is to allow it on Windows for logging but not fo...
void _dbus_generate_pseudorandom_bytes_buffer(char *buffer, int n_bytes)
Random numbers.
int _dbus_write_socket(int fd, const DBusString *buffer, int start, int len)
Like _dbus_write(), but only supports sockets and is thus available on Windows.
void _dbus_exit(int code)
Exit the process, returning the given value.
dbus_bool_t _dbus_get_is_errno_eagain_or_ewouldblock(void)
See if errno is EAGAIN or EWOULDBLOCK (this has to be done differently for Winsock so is abstracted) ...
dbus_bool_t _dbus_user_info_fill_uid(DBusUserInfo *info, dbus_uid_t uid, DBusError *error)
Gets user info for the given user ID.
#define DBUS_ERROR_NO_MEMORY
There was not enough memory to complete an operation.
dbus_bool_t _dbus_lookup_session_address(dbus_bool_t *supported, DBusString *address, DBusError *error)
Determines the address of the session bus by querying a platform-specific method. ...
#define FALSE
Expands to "0".
dbus_bool_t _dbus_read_local_machine_uuid(DBusGUID *machine_id, dbus_bool_t create_if_not_found, DBusError *error)
Reads the uuid of the machine we're running on from the dbus configuration.
void _dbus_generate_uuid(DBusGUID *uuid)
Generates a new UUID.
dbus_bool_t _dbus_write_uuid_file(const DBusString *filename, const DBusGUID *uuid, DBusError *error)
Write the give UUID to a file.
void _dbus_print_backtrace(void)
On GNU libc systems, print a crude backtrace to stderr.
void dbus_set_error_const(DBusError *error, const char *name, const char *message)
Assigns an error name and message to a DBusError.
dbus_bool_t _dbus_string_set_length(DBusString *str, int length)
Sets the length of a string.
#define _DBUS_LOCK(name)
Locks a global lock, initializing it first if necessary.
int _dbus_write_two(int fd, const DBusString *buffer1, int start1, int len1, const DBusString *buffer2, int start2, int len2)
Like _dbus_write() but will use writev() if possible to write both buffers in sequence.
int _dbus_printf_string_upper_bound(const char *format, va_list args)
Measure the length of the given format string and arguments, not including the terminating nul...
void _dbus_verbose_bytes_of_string(const DBusString *str, int start, int len)
Dump the given part of the string to verbose log.
dbus_uid_t _dbus_geteuid(void)
Gets our effective UID.
#define WRITE_END
Helps remember which end of the pipe is which.
unsigned long dbus_gid_t
A group ID.
int dbus_int32_t
A 32-bit signed integer on all platforms.
char * _dbus_strdup(const char *str)
Duplicates a string.
dbus_bool_t _dbus_close_socket(int fd, DBusError *error)
Closes a socket.
#define _DBUS_ZERO(object)
Sets all bits in an object to zero.
dbus_bool_t _dbus_credentials_add_unix_uid(DBusCredentials *credentials, dbus_uid_t uid)
Add a UNIX user ID to the credentials.
unsigned long dbus_uid_t
A user ID.
short revents
Events that occurred.
int _dbus_connect_unix_socket(const char *path, dbus_bool_t abstract, DBusError *error)
Creates a socket and connects it to the UNIX domain socket at the given path.
void _dbus_sleep_milliseconds(int milliseconds)
Sleeps the given number of milliseconds.
int _dbus_read(int fd, DBusString *buffer, int count)
Thin wrapper around the read() system call that appends the data it reads to the DBusString buffer...
dbus_bool_t dbus_error_is_set(const DBusError *error)
Checks whether an error occurred (the error is set).
int _dbus_listen_unix_socket(const char *path, dbus_bool_t abstract, DBusError *error)
Creates a socket and binds it to the given path, then listens on the socket.
int _dbus_connect_tcp_socket(const char *host, const char *port, const char *family, DBusError *error)
Creates a socket and connects to a socket at the given host and port.
int _dbus_listen_systemd_sockets(int **fds, DBusError *error)
Acquires one or more sockets passed in from systemd.
int _dbus_listen_tcp_socket(const char *host, const char *port, const char *family, DBusString *retport, int **fds_p, DBusError *error)
Creates a socket and binds it to the given path, then listens on the socket.
dbus_bool_t _dbus_generate_random_bytes(DBusString *str, int n_bytes)
Generates the given number of random bytes, using the best mechanism we can come up with...
Information about a UNIX user.
#define _DBUS_POLLERR
Error condition.