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-file.h" 33 #include "dbus-transport.h" 34 #include "dbus-string.h" 35 #include "dbus-userdb.h" 36 #include "dbus-list.h" 37 #include "dbus-credentials.h" 38 #include "dbus-nonce.h" 40 #include <sys/types.h> 47 #include <sys/socket.h> 56 #include <netinet/in.h> 57 #include <netinet/tcp.h> 60 #include <arpa/inet.h> 77 #ifdef HAVE_GETPEERUCRED 89 #include <systemd/sd-daemon.h> 100 #ifndef AI_ADDRCONFIG 101 #define AI_ADDRCONFIG 0 104 #ifndef HAVE_SOCKLEN_T 105 #define socklen_t int 108 #if defined (__sun) || defined (__sun__) 121 # define CMSG_ALIGN(len) _CMSG_DATA_ALIGN (len) 124 # define CMSG_ALIGN(len) (((len) + sizeof (long) - 1) & \ 125 ~(sizeof (long) - 1)) 130 # define CMSG_SPACE(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + \ 135 # define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len)) 156 const char **error_str_p)
158 static int const relevant_flag[] = { DBUS_FORCE_STDIN_NULL,
159 DBUS_FORCE_STDOUT_NULL,
160 DBUS_FORCE_STDERR_NULL };
162 const char *error_str =
"Failed mysteriously";
166 _DBUS_STATIC_ASSERT (STDIN_FILENO == 0);
167 _DBUS_STATIC_ASSERT (STDOUT_FILENO == 1);
168 _DBUS_STATIC_ASSERT (STDERR_FILENO == 2);
171 for (i = STDIN_FILENO; i <= STDERR_FILENO; i++)
177 devnull = open (
"/dev/null", O_RDWR);
181 error_str =
"Failed to open /dev/null";
190 if (devnull != i && (flags & relevant_flag[i]) != 0)
192 if (dup2 (devnull, i) < 0)
194 error_str =
"Failed to dup2 /dev/null onto a standard fd";
205 if (devnull > STDERR_FILENO)
208 if (error_str_p !=
NULL)
209 *error_str_p = error_str;
212 return (error_str ==
NULL);
215 static dbus_bool_t _dbus_set_fd_nonblocking (
int fd,
219 _dbus_open_socket (
int *fd_p,
228 *fd_p = socket (domain, type | SOCK_CLOEXEC, protocol);
229 cloexec_done = *fd_p >= 0;
232 if (*fd_p < 0 && (errno == EINVAL || errno == EPROTOTYPE))
235 *fd_p = socket (domain, type, protocol);
247 _dbus_verbose (
"socket fd %d opened\n", *fd_p);
254 "Failed to open socket: %s",
255 _dbus_strerror (errno));
271 _dbus_open_unix_socket (
int *fd,
274 return _dbus_open_socket(fd, PF_UNIX, SOCK_STREAM, 0, error);
325 #if HAVE_DECL_MSG_NOSIGNAL 329 data = _dbus_string_get_const_data_len (buffer, start, len);
333 bytes_written = send (fd.fd, data, len, MSG_NOSIGNAL);
335 if (bytes_written < 0 && errno == EINTR)
338 return bytes_written;
362 unsigned int *n_fds) {
363 #ifndef HAVE_UNIX_FD_PASSING 381 start = _dbus_string_get_length (buffer);
401 m.msg_controllen = CMSG_SPACE(*n_fds *
sizeof(
int));
405 m.msg_control = alloca(m.msg_controllen);
406 memset(m.msg_control, 0, m.msg_controllen);
412 m.msg_controllen = CMSG_LEN (*n_fds *
sizeof(
int));
416 bytes_read = recvmsg (fd.fd, &m, 0
417 #ifdef MSG_CMSG_CLOEXEC
438 for (cm = CMSG_FIRSTHDR(&m); cm; cm = CMSG_NXTHDR(&m, cm))
439 if (cm->cmsg_level == SOL_SOCKET && cm->cmsg_type == SCM_RIGHTS)
442 int *payload = (
int *) CMSG_DATA (cm);
443 size_t payload_len_bytes = (cm->cmsg_len - CMSG_LEN (0));
444 size_t payload_len_fds;
449 _DBUS_STATIC_ASSERT (
sizeof (
size_t) >=
sizeof (
unsigned int));
451 if ((m.msg_flags & MSG_CTRUNC) && CMSG_NXTHDR(&m, cm) ==
NULL &&
452 (
char *) payload + payload_len_bytes >
453 (
char *) m.msg_control + m.msg_controllen)
464 payload_len_bytes = m.msg_controllen -
465 ((
char *) payload - (
char *) m.msg_control);
468 payload_len_fds = payload_len_bytes /
sizeof (int);
470 if (_DBUS_LIKELY (payload_len_fds <= (
size_t) *n_fds))
473 fds_to_use = payload_len_fds;
481 fds_to_use = (size_t) *n_fds;
486 for (i = fds_to_use; i < payload_len_fds; i++)
492 memcpy (fds, payload, fds_to_use *
sizeof (
int));
497 *n_fds = (
unsigned int) fds_to_use;
502 for (i = 0; i < fds_to_use; i++)
511 if (m.msg_flags & MSG_CTRUNC)
522 for (i = 0; i < *n_fds; i++)
545 _dbus_write_socket_with_unix_fds(
DBusSocket fd,
552 #ifndef HAVE_UNIX_FD_PASSING 561 return _dbus_write_socket_with_unix_fds_two(fd, buffer, start, len,
NULL, 0, 0, fds, n_fds);
566 _dbus_write_socket_with_unix_fds_two(
DBusSocket fd,
576 #ifndef HAVE_UNIX_FD_PASSING 584 buffer1, start1, len1,
585 buffer2, start2, len2);
598 iov[0].iov_base = (
char*) _dbus_string_get_const_data_len (buffer1, start1, len1);
599 iov[0].iov_len = len1;
603 iov[1].iov_base = (
char*) _dbus_string_get_const_data_len (buffer2, start2, len2);
604 iov[1].iov_len = len2;
609 m.msg_iovlen = buffer2 ? 2 : 1;
613 m.msg_controllen = CMSG_SPACE(n_fds *
sizeof(
int));
614 m.msg_control = alloca(m.msg_controllen);
615 memset(m.msg_control, 0, m.msg_controllen);
617 cm = CMSG_FIRSTHDR(&m);
618 cm->cmsg_level = SOL_SOCKET;
619 cm->cmsg_type = SCM_RIGHTS;
620 cm->cmsg_len = CMSG_LEN(n_fds *
sizeof(
int));
621 memcpy(CMSG_DATA(cm), fds, n_fds *
sizeof(
int));
626 bytes_written = sendmsg (fd.fd, &m, 0
627 #
if HAVE_DECL_MSG_NOSIGNAL
632 if (bytes_written < 0 && errno == EINTR)
636 if (bytes_written > 0)
640 return bytes_written;
666 #if HAVE_DECL_MSG_NOSIGNAL 667 struct iovec vectors[2];
679 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
682 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
690 vectors[0].iov_base = (
char*) data1;
691 vectors[0].iov_len = len1;
692 vectors[1].iov_base = (
char*) data2;
693 vectors[1].iov_len = len2;
697 m.msg_iovlen = data2 ? 2 : 1;
701 bytes_written = sendmsg (fd.fd, &m, MSG_NOSIGNAL);
703 if (bytes_written < 0 && errno == EINTR)
706 return bytes_written;
710 buffer2, start2, len2);
741 start = _dbus_string_get_length (buffer);
753 bytes_read = read (fd, data, count);
799 data = _dbus_string_get_const_data_len (buffer, start, len);
803 bytes_written = write (fd, data, len);
805 if (bytes_written < 0 && errno == EINTR)
809 if (bytes_written > 0)
813 return bytes_written;
853 struct iovec vectors[2];
858 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
861 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
869 vectors[0].iov_base = (
char*) data1;
870 vectors[0].iov_len = len1;
871 vectors[1].iov_base = (
char*) data2;
872 vectors[1].iov_len = len2;
876 bytes_written = writev (fd,
880 if (bytes_written < 0 && errno == EINTR)
883 return bytes_written;
890 if (ret1 == len1 && buffer2 !=
NULL)
904 #define _DBUS_MAX_SUN_PATH_LENGTH 99 942 struct sockaddr_un addr;
943 _DBUS_STATIC_ASSERT (
sizeof (addr.sun_path) > _DBUS_MAX_SUN_PATH_LENGTH);
945 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
947 _dbus_verbose (
"connecting to unix socket %s abstract=%d\n",
951 if (!_dbus_open_unix_socket (&fd, error))
953 _DBUS_ASSERT_ERROR_IS_SET(error);
956 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
959 addr.sun_family = AF_UNIX;
960 path_len = strlen (path);
965 addr.sun_path[0] =
'\0';
968 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
971 "Abstract socket name too long\n");
976 strncpy (&addr.sun_path[1], path, sizeof (addr.sun_path) - 2);
980 "Operating system does not support abstract socket namespace\n");
987 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
990 "Socket name too long\n");
995 strncpy (addr.sun_path, path, sizeof (addr.sun_path) - 1);
998 if (connect (fd, (
struct sockaddr*) &addr, _DBUS_STRUCT_OFFSET (
struct sockaddr_un, sun_path) + path_len) < 0)
1002 "Failed to connect to socket %s: %s",
1003 path, _dbus_strerror (errno));
1009 if (!_dbus_set_fd_nonblocking (fd, error))
1011 _DBUS_ASSERT_ERROR_IS_SET (error);
1042 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1044 _dbus_verbose (
"connecting to process %s\n", path);
1047 retval = socketpair (AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0, fds);
1048 cloexec_done = (retval >= 0);
1050 if (retval < 0 && (errno == EINVAL || errno == EPROTOTYPE))
1053 retval = socketpair (AF_UNIX, SOCK_STREAM, 0, fds);
1060 "Failed to create socket pair: %s",
1061 _dbus_strerror (errno));
1076 "Failed to fork() to call %s: %s",
1077 path, _dbus_strerror (errno));
1088 dup2 (fds[1], STDIN_FILENO);
1089 dup2 (fds[1], STDOUT_FILENO);
1091 if (fds[1] != STDIN_FILENO &&
1092 fds[1] != STDOUT_FILENO)
1100 execvp (path, (
char *
const *) argv);
1102 fprintf (stderr,
"Failed to execute process %s: %s\n", path, _dbus_strerror (errno));
1110 if (!_dbus_set_fd_nonblocking (fds[0], error))
1112 _DBUS_ASSERT_ERROR_IS_SET (error);
1144 struct sockaddr_un addr;
1146 _DBUS_STATIC_ASSERT (
sizeof (addr.sun_path) > _DBUS_MAX_SUN_PATH_LENGTH);
1148 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1150 _dbus_verbose (
"listening on unix socket %s abstract=%d\n",
1153 if (!_dbus_open_unix_socket (&listen_fd, error))
1155 _DBUS_ASSERT_ERROR_IS_SET(error);
1158 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1161 addr.sun_family = AF_UNIX;
1162 path_len = strlen (path);
1170 addr.sun_path[0] =
'\0';
1173 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
1176 "Abstract socket name too long\n");
1181 strncpy (&addr.sun_path[1], path, sizeof (addr.sun_path) - 2);
1185 "Operating system does not support abstract socket namespace\n");
1205 if (stat (path, &sb) == 0 &&
1206 S_ISSOCK (sb.st_mode))
1210 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
1213 "Socket name too long\n");
1218 strncpy (addr.sun_path, path, sizeof (addr.sun_path) - 1);
1221 if (bind (listen_fd, (
struct sockaddr*) &addr, _DBUS_STRUCT_OFFSET (
struct sockaddr_un, sun_path) + path_len) < 0)
1224 "Failed to bind socket \"%s\": %s",
1225 path, _dbus_strerror (errno));
1230 if (listen (listen_fd, SOMAXCONN ) < 0)
1233 "Failed to listen on socket \"%s\": %s",
1234 path, _dbus_strerror (errno));
1239 if (!_dbus_set_fd_nonblocking (listen_fd, error))
1241 _DBUS_ASSERT_ERROR_IS_SET (error);
1249 if (!
abstract && chmod (path, 0777) < 0)
1250 _dbus_warn (
"Could not set mode 0777 on socket %s", path);
1274 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1276 n = sd_listen_fds (
TRUE);
1280 "Failed to acquire systemd socket: %s",
1281 _dbus_strerror (-n));
1288 "No socket received.");
1292 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1294 r = sd_is_socket (fd, AF_UNSPEC, SOCK_STREAM, 1);
1298 "Failed to verify systemd socket type: %s",
1299 _dbus_strerror (-r));
1306 "Passed socket has wrong type.");
1318 "Failed to allocate file handle array.");
1322 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1324 if (!_dbus_set_fd_nonblocking (fd, error))
1326 _DBUS_ASSERT_ERROR_IS_SET (error);
1330 new_fds[fd - SD_LISTEN_FDS_START].fd = fd;
1338 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1347 "dbus was compiled without systemd support");
1355 _dbus_error_from_gai (
int gai_res,
1421 return _dbus_connect_tcp_socket_with_nonce (host, port, family, (
const char*)
NULL, error);
1425 _dbus_connect_tcp_socket_with_nonce (
const char *host,
1428 const char *noncefile,
1431 int saved_errno = 0;
1434 struct addrinfo hints;
1435 struct addrinfo *ai, *tmp;
1437 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1442 hints.ai_family = AF_UNSPEC;
1443 else if (!strcmp(family,
"ipv4"))
1444 hints.ai_family = AF_INET;
1445 else if (!strcmp(family,
"ipv6"))
1446 hints.ai_family = AF_INET6;
1451 "Unknown address family %s", family);
1452 return _dbus_socket_get_invalid ();
1454 hints.ai_protocol = IPPROTO_TCP;
1455 hints.ai_socktype = SOCK_STREAM;
1456 hints.ai_flags = AI_ADDRCONFIG;
1458 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0)
1461 _dbus_error_from_gai (res, errno),
1462 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1463 host, port, gai_strerror(res), res);
1464 return _dbus_socket_get_invalid ();
1470 if (!_dbus_open_socket (&fd.fd, tmp->ai_family, SOCK_STREAM, 0, error))
1473 _DBUS_ASSERT_ERROR_IS_SET(error);
1474 return _dbus_socket_get_invalid ();
1476 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1478 if (connect (fd.fd, (
struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) < 0)
1480 saved_errno = errno;
1495 "Failed to connect to socket \"%s:%s\" %s",
1496 host, port, _dbus_strerror(saved_errno));
1497 return _dbus_socket_get_invalid ();
1500 if (noncefile !=
NULL)
1505 ret = _dbus_send_nonce (fd, &noncefileStr, error);
1511 return _dbus_socket_get_invalid ();
1515 if (!_dbus_set_fd_nonblocking (fd.fd, error))
1518 return _dbus_socket_get_invalid ();
1549 int nlisten_fd = 0, res, i;
1551 struct addrinfo hints;
1552 struct addrinfo *ai, *tmp;
1553 unsigned int reuseaddr;
1556 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1561 hints.ai_family = AF_UNSPEC;
1562 else if (!strcmp(family,
"ipv4"))
1563 hints.ai_family = AF_INET;
1564 else if (!strcmp(family,
"ipv6"))
1565 hints.ai_family = AF_INET6;
1570 "Unknown address family %s", family);
1574 hints.ai_protocol = IPPROTO_TCP;
1575 hints.ai_socktype = SOCK_STREAM;
1576 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
1578 redo_lookup_with_port:
1580 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai)
1583 _dbus_error_from_gai (res, errno),
1584 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1585 host ? host :
"*", port, gai_strerror(res), res);
1592 int fd = -1, tcp_nodelay_on;
1595 if (!_dbus_open_socket (&fd, tmp->ai_family, SOCK_STREAM, 0, error))
1597 _DBUS_ASSERT_ERROR_IS_SET(error);
1600 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1603 if (setsockopt (fd, SOL_SOCKET, SO_REUSEADDR, &reuseaddr,
sizeof(reuseaddr))==-1)
1605 _dbus_warn (
"Failed to set socket option \"%s:%s\": %s",
1606 host ? host :
"*", port, _dbus_strerror (errno));
1612 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &tcp_nodelay_on,
sizeof (tcp_nodelay_on)) == -1)
1614 _dbus_warn (
"Failed to set TCP_NODELAY socket option \"%s:%s\": %s",
1615 host ? host :
"*", port, _dbus_strerror (errno));
1618 if (bind (fd, (
struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) < 0)
1620 saved_errno = errno;
1622 if (saved_errno == EADDRINUSE)
1640 "Failed to bind socket \"%s:%s\": %s",
1641 host ? host :
"*", port, _dbus_strerror (saved_errno));
1645 if (listen (fd, 30 ) < 0)
1647 saved_errno = errno;
1650 "Failed to listen on socket \"%s:%s\": %s",
1651 host ? host :
"*", port, _dbus_strerror (saved_errno));
1660 "Failed to allocate file handle array");
1663 listen_fd = newlisten_fd;
1664 listen_fd[nlisten_fd].fd = fd;
1667 if (!_dbus_string_get_length(retport))
1673 if (!port || !strcmp(port,
"0"))
1676 struct sockaddr_storage addr;
1680 addrlen =
sizeof(addr);
1681 result = getsockname(fd, (
struct sockaddr*) &addr, &addrlen);
1685 saved_errno = errno;
1687 "Failed to retrieve socket name for \"%s:%s\": %s",
1688 host ? host :
"*", port, _dbus_strerror (saved_errno));
1692 if ((res = getnameinfo ((
struct sockaddr*)&addr, addrlen,
NULL, 0,
1693 portbuf,
sizeof(portbuf),
1694 NI_NUMERICHOST | NI_NUMERICSERV)) != 0)
1696 saved_errno = errno;
1698 "Failed to resolve port \"%s:%s\": %s (%d)",
1699 host ? host :
"*", port, gai_strerror(res), res);
1710 port = _dbus_string_get_const_data(retport);
1712 goto redo_lookup_with_port;
1733 "Failed to bind socket \"%s:%s\": %s",
1734 host ? host :
"*", port, _dbus_strerror (errno));
1738 for (i = 0 ; i < nlisten_fd ; i++)
1740 if (!_dbus_set_fd_nonblocking (listen_fd[i].fd, error))
1753 for (i = 0 ; i < nlisten_fd ; i++)
1760 write_credentials_byte (
int server_fd,
1764 char buf[1] = {
'\0' };
1765 #if defined(HAVE_CMSGCRED) 1768 char cred[CMSG_SPACE (
sizeof (
struct cmsgcred))];
1779 msg.msg_control = (caddr_t) &cmsg;
1780 msg.msg_controllen = CMSG_SPACE (
sizeof (
struct cmsgcred));
1782 cmsg.hdr.cmsg_len = CMSG_LEN (
sizeof (
struct cmsgcred));
1783 cmsg.hdr.cmsg_level = SOL_SOCKET;
1784 cmsg.hdr.cmsg_type = SCM_CREDS;
1787 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1791 #if defined(HAVE_CMSGCRED) 1792 bytes_written = sendmsg (server_fd, &msg, 0
1793 #
if HAVE_DECL_MSG_NOSIGNAL
1801 if (bytes_written < 0 && errno == EINVAL)
1804 bytes_written = send (server_fd, buf, 1, 0
1805 #
if HAVE_DECL_MSG_NOSIGNAL
1811 if (bytes_written < 0 && errno == EINTR)
1814 if (bytes_written < 0)
1817 "Failed to write credentials byte: %s",
1818 _dbus_strerror (errno));
1821 else if (bytes_written == 0)
1824 "wrote zero bytes writing credentials byte");
1830 _dbus_verbose (
"wrote credentials byte\n");
1837 add_linux_security_label_to_credentials (
int client_fd,
1840 #if defined(__linux__) && defined(SO_PEERSEC) 1842 socklen_t len = 1024;
1849 while (getsockopt (client_fd, SOL_SOCKET, SO_PEERSEC,
1850 _dbus_string_get_data (&buf), &len) < 0)
1854 _dbus_verbose (
"getsockopt failed with %s, len now %lu\n",
1855 _dbus_strerror (e), (
unsigned long) len);
1857 if (e != ERANGE || len <= _dbus_string_get_length_uint (&buf))
1859 _dbus_verbose (
"Failed to getsockopt(SO_PEERSEC): %s\n",
1860 _dbus_strerror (e));
1872 _dbus_verbose (
"will try again with %lu\n", (
unsigned long) len);
1877 _dbus_verbose (
"getsockopt(SO_PEERSEC) yielded <= 0 bytes: %lu\n",
1878 (
unsigned long) len);
1882 if (len > _dbus_string_get_length_uint (&buf))
1884 _dbus_verbose (
"%lu > %u", (
unsigned long) len,
1885 _dbus_string_get_length_uint (&buf));
1889 if (_dbus_string_get_byte (&buf, len - 1) == 0)
1893 _dbus_verbose (
"subtracting trailing \\0\n");
1904 if (strlen (_dbus_string_get_const_data (&buf)) != len)
1909 _dbus_verbose (
"security label from kernel had an embedded \\0, " 1914 _dbus_verbose (
"getsockopt(SO_PEERSEC): %lu bytes excluding \\0: %s\n",
1915 (
unsigned long) len,
1916 _dbus_string_get_const_data (&buf));
1920 char* ss = _dbus_string_get_data (&buf);
1921 ss = strtok (ss,
",");
1926 _dbus_string_get_const_data (&buf)))
1993 #ifdef HAVE_CMSGCRED 1996 char cred[CMSG_SPACE (
sizeof (
struct cmsgcred))];
2004 _DBUS_STATIC_ASSERT (
sizeof (pid_t) <=
sizeof (
dbus_pid_t));
2005 _DBUS_STATIC_ASSERT (
sizeof (uid_t) <=
sizeof (
dbus_uid_t));
2006 _DBUS_STATIC_ASSERT (
sizeof (gid_t) <=
sizeof (
dbus_gid_t));
2011 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2015 iov.iov_base = &buf;
2022 #if defined(HAVE_CMSGCRED) 2024 msg.msg_control = (caddr_t) &cmsg;
2025 msg.msg_controllen = CMSG_SPACE (
sizeof (
struct cmsgcred));
2029 bytes_read = recvmsg (client_fd.fd, &msg, 0);
2042 "Failed to read credentials byte: %s",
2043 _dbus_strerror (errno));
2046 else if (bytes_read == 0)
2052 "Failed to read credentials byte (zero-length read)");
2055 else if (buf !=
'\0')
2058 "Credentials byte was not nul");
2062 _dbus_verbose (
"read credentials byte\n");
2075 struct sockpeercred cr;
2079 socklen_t cr_len =
sizeof (cr);
2081 if (getsockopt (client_fd.fd, SOL_SOCKET, SO_PEERCRED, &cr, &cr_len) != 0)
2083 _dbus_verbose (
"Failed to getsockopt(SO_PEERCRED): %s\n",
2084 _dbus_strerror (errno));
2086 else if (cr_len !=
sizeof (cr))
2088 _dbus_verbose (
"Failed to getsockopt(SO_PEERCRED), returned %d bytes, expected %d\n",
2089 cr_len, (
int)
sizeof (cr));
2096 #elif defined(HAVE_UNPCBID) && defined(LOCAL_PEEREID) 2100 socklen_t cr_len =
sizeof (cr);
2102 if (getsockopt (client_fd.fd, 0, LOCAL_PEEREID, &cr, &cr_len) != 0)
2104 _dbus_verbose (
"Failed to getsockopt(LOCAL_PEEREID): %s\n",
2105 _dbus_strerror (errno));
2107 else if (cr_len !=
sizeof (cr))
2109 _dbus_verbose (
"Failed to getsockopt(LOCAL_PEEREID), returned %d bytes, expected %d\n",
2110 cr_len, (
int)
sizeof (cr));
2114 pid_read = cr.unp_pid;
2115 uid_read = cr.unp_euid;
2117 #elif defined(HAVE_CMSGCRED) 2126 struct cmsgcred *cred;
2127 struct cmsghdr *cmsgp;
2129 for (cmsgp = CMSG_FIRSTHDR (&msg);
2131 cmsgp = CMSG_NXTHDR (&msg, cmsgp))
2133 if (cmsgp->cmsg_type == SCM_CREDS &&
2134 cmsgp->cmsg_level == SOL_SOCKET &&
2135 cmsgp->cmsg_len >= CMSG_LEN (
sizeof (
struct cmsgcred)))
2137 cred = (
struct cmsgcred *) CMSG_DATA (cmsgp);
2138 pid_read = cred->cmcred_pid;
2139 uid_read = cred->cmcred_euid;
2144 #elif defined(HAVE_GETPEERUCRED) 2148 ucred_t * ucred =
NULL;
2149 if (getpeerucred (client_fd.fd, &ucred) == 0)
2152 adt_session_data_t *adth =
NULL;
2154 pid_read = ucred_getpid (ucred);
2155 uid_read = ucred_geteuid (ucred);
2158 if (adt_start_session (&adth,
NULL, 0) || (adth ==
NULL))
2160 _dbus_verbose (
"Failed to adt_start_session(): %s\n", _dbus_strerror (errno));
2164 if (adt_set_from_ucred (adth, ucred, ADT_NEW))
2166 _dbus_verbose (
"Failed to adt_set_from_ucred(): %s\n", _dbus_strerror (errno));
2170 adt_export_data_t *data =
NULL;
2171 size_t size = adt_export_session_data (adth, &data);
2174 _dbus_verbose (
"Failed to adt_export_session_data(): %s\n", _dbus_strerror (errno));
2182 (void) adt_end_session (adth);
2188 _dbus_verbose (
"Failed to getpeerucred() credentials: %s\n", _dbus_strerror (errno));
2198 #elif defined(HAVE_GETPEEREID) 2216 if (getpeereid (client_fd.fd, &euid, &egid) == 0)
2222 _dbus_verbose (
"Failed to getpeereid() credentials: %s\n", _dbus_strerror (errno));
2226 #warning Socket credentials not supported on this Unix OS 2227 #warning Please tell https://bugs.freedesktop.org/enter_bug.cgi?product=DBus 2233 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \ 2234 defined(__linux__) || \ 2235 defined(__OpenBSD__) || \ 2237 # error Credentials passing not working on this OS is a regression! 2240 _dbus_verbose (
"Socket credentials not supported on this OS\n");
2244 _dbus_verbose (
"Credentials:" 2255 _DBUS_SET_OOM (error);
2264 _DBUS_SET_OOM (error);
2269 if (!add_linux_security_label_to_credentials (client_fd.fd, credentials))
2271 _DBUS_SET_OOM (error);
2299 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2301 if (write_credentials_byte (server_fd.fd, error))
2320 struct sockaddr addr;
2326 addrlen =
sizeof (addr);
2336 client_fd.fd = accept4 (listen_fd.fd, &addr, &addrlen, SOCK_CLOEXEC);
2337 cloexec_done = client_fd.fd >= 0;
2339 if (client_fd.fd < 0 && (errno == ENOSYS || errno == EINVAL))
2342 client_fd.fd = accept (listen_fd.fd, &addr, &addrlen);
2345 if (client_fd.fd < 0)
2351 _dbus_verbose (
"client fd %d accepted\n", client_fd.fd);
2374 const char *directory;
2377 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2379 directory = _dbus_string_get_const_data (dir);
2381 if (stat (directory, &sb) < 0)
2384 "%s", _dbus_strerror (errno));
2389 if (sb.st_uid != geteuid ())
2392 "%s directory is owned by user %lu, not %lu",
2394 (
unsigned long) sb.st_uid,
2395 (
unsigned long) geteuid ());
2399 if ((S_IROTH & sb.st_mode) || (S_IWOTH & sb.st_mode) ||
2400 (S_IRGRP & sb.st_mode) || (S_IWGRP & sb.st_mode))
2403 "%s directory is not private to the user", directory);
2411 fill_user_info_from_passwd (
struct passwd *p,
2418 info->
uid = p->pw_uid;
2439 const char *username_c;
2452 if (username !=
NULL)
2453 username_c = _dbus_string_get_const_data (username);
2462 #if defined (HAVE_POSIX_GETPWNAM_R) || defined (HAVE_NONPOSIX_GETPWNAM_R) 2468 struct passwd p_str;
2471 buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
2477 if ((
long) buflen <= 0)
2491 #ifdef HAVE_POSIX_GETPWNAM_R 2493 result = getpwuid_r (uid, &p_str, buf, buflen,
2496 result = getpwnam_r (username_c, &p_str, buf, buflen,
2500 p = getpwuid_r (uid, &p_str, buf, buflen);
2502 p = getpwnam_r (username_c, &p_str, buf, buflen);
2506 if (result == ERANGE && buflen < 512 * 1024)
2516 if (result == 0 && p == &p_str)
2518 if (!fill_user_info_from_passwd (p, info, error))
2528 "User \"%s\" unknown or no memory to allocate password entry\n",
2529 username_c ? username_c :
"???");
2530 _dbus_verbose (
"User %s unknown\n", username_c ? username_c :
"???");
2543 p = getpwnam (username_c);
2547 if (!fill_user_info_from_passwd (p, info, error))
2555 "User \"%s\" unknown or no memory to allocate password entry\n",
2556 username_c ? username_c :
"???");
2557 _dbus_verbose (
"User %s unknown\n", username_c ? username_c :
"???");
2566 #ifdef HAVE_GETGROUPLIST 2571 int initial_buf_count;
2573 initial_buf_count = 17;
2574 buf_count = initial_buf_count;
2582 if (getgrouplist (username_c,
2584 buf, &buf_count) < 0)
2600 if (buf_count == initial_buf_count)
2615 if (getgrouplist (username_c, info->
primary_gid, buf, &buf_count) < 0)
2619 _dbus_warn (
"It appears that username \"%s\" is in more than %d groups.\nProceeding with just the first %d groups.",
2620 username_c, buf_count, buf_count);
2626 "Failed to get groups for username \"%s\" primary GID " 2629 _dbus_strerror (errno));
2644 for (i = 0; i < buf_count; ++i)
2667 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2672 _DBUS_ASSERT_ERROR_IS_SET (error);
2706 return fill_user_info (info, uid,
2724 _DBUS_STATIC_ASSERT (
sizeof (pid_t) <=
sizeof (
dbus_pid_t));
2725 _DBUS_STATIC_ASSERT (
sizeof (uid_t) <=
sizeof (
dbus_uid_t));
2726 _DBUS_STATIC_ASSERT (
sizeof (gid_t) <=
sizeof (
dbus_gid_t));
2808 if (_dbus_string_get_length (uid_str) == 0)
2810 _dbus_verbose (
"UID string was zero length\n");
2819 _dbus_verbose (
"could not parse string as a UID\n");
2823 if (end != _dbus_string_get_length (uid_str))
2825 _dbus_verbose (
"string contained trailing stuff after UID\n");
2840 static pthread_mutex_t atomic_mutex = PTHREAD_MUTEX_INITIALIZER;
2853 return __sync_add_and_fetch(&atomic->
value, 1)-1;
2857 pthread_mutex_lock (&atomic_mutex);
2858 res = atomic->
value;
2860 pthread_mutex_unlock (&atomic_mutex);
2876 return __sync_sub_and_fetch(&atomic->
value, 1)+1;
2880 pthread_mutex_lock (&atomic_mutex);
2881 res = atomic->
value;
2883 pthread_mutex_unlock (&atomic_mutex);
2900 __sync_synchronize ();
2901 return atomic->
value;
2905 pthread_mutex_lock (&atomic_mutex);
2906 res = atomic->
value;
2907 pthread_mutex_unlock (&atomic_mutex);
2924 int timeout_milliseconds)
2926 #if defined(HAVE_POLL) && !defined(BROKEN_POLL) 2928 if (timeout_milliseconds < -1)
2930 timeout_milliseconds = -1;
2935 timeout_milliseconds);
2938 fd_set read_set, write_set, err_set;
2944 FD_ZERO (&read_set);
2945 FD_ZERO (&write_set);
2948 for (i = 0; i < n_fds; i++)
2953 FD_SET (fdp->
fd, &read_set);
2956 FD_SET (fdp->
fd, &write_set);
2958 FD_SET (fdp->
fd, &err_set);
2960 max_fd = MAX (max_fd, fdp->
fd);
2963 tv.tv_sec = timeout_milliseconds / 1000;
2964 tv.tv_usec = (timeout_milliseconds % 1000) * 1000;
2966 ready = select (max_fd + 1, &read_set, &write_set, &err_set,
2967 timeout_milliseconds < 0 ?
NULL : &tv);
2971 for (i = 0; i < n_fds; i++)
2977 if (FD_ISSET (fdp->
fd, &read_set))
2980 if (FD_ISSET (fdp->
fd, &write_set))
2983 if (FD_ISSET (fdp->
fd, &err_set))
3003 #ifdef HAVE_MONOTONIC_CLOCK 3005 clock_gettime (CLOCK_MONOTONIC, &ts);
3008 *tv_sec = ts.tv_sec;
3010 *tv_usec = ts.tv_nsec / 1000;
3014 gettimeofday (&t,
NULL);
3019 *tv_usec = t.tv_usec;
3036 gettimeofday (&t,
NULL);
3041 *tv_usec = t.tv_usec;
3056 const char *filename_c;
3058 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3060 filename_c = _dbus_string_get_const_data (filename);
3062 if (mkdir (filename_c, 0700) < 0)
3064 if (errno == EEXIST)
3068 "Failed to create directory %s: %s\n",
3069 filename_c, _dbus_strerror (errno));
3088 const char *filename_c;
3090 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3092 filename_c = _dbus_string_get_const_data (filename);
3094 if (mkdir (filename_c, 0700) < 0)
3097 "Failed to create directory %s: %s\n",
3098 filename_c, _dbus_strerror (errno));
3122 if (_dbus_string_get_length (dir) == 0 ||
3123 _dbus_string_get_length (next_component) == 0)
3126 dir_ends_in_slash =
'/' == _dbus_string_get_byte (dir,
3127 _dbus_string_get_length (dir) - 1);
3129 file_starts_with_slash =
'/' == _dbus_string_get_byte (next_component, 0);
3131 if (dir_ends_in_slash && file_starts_with_slash)
3135 else if (!(dir_ends_in_slash || file_starts_with_slash))
3142 _dbus_string_get_length (dir));
3146 #define NANOSECONDS_PER_SECOND 1000000000 3148 #define MICROSECONDS_PER_SECOND 1000000 3150 #define MILLISECONDS_PER_SECOND 1000 3152 #define NANOSECONDS_PER_MILLISECOND 1000000 3154 #define MICROSECONDS_PER_MILLISECOND 1000 3163 #ifdef HAVE_NANOSLEEP 3164 struct timespec req;
3165 struct timespec rem;
3167 req.tv_sec = milliseconds / MILLISECONDS_PER_SECOND;
3168 req.tv_nsec = (milliseconds % MILLISECONDS_PER_SECOND) * NANOSECONDS_PER_MILLISECOND;
3172 while (nanosleep (&req, &rem) < 0 && errno == EINTR)
3174 #elif defined (HAVE_USLEEP) 3175 usleep (milliseconds * MICROSECONDS_PER_MILLISECOND);
3177 sleep (MAX (milliseconds / 1000, 1));
3199 old_len = _dbus_string_get_length (str);
3203 fd = open (
"/dev/urandom", O_RDONLY);
3208 "Could not open /dev/urandom: %s",
3209 _dbus_strerror (errno));
3213 _dbus_verbose (
"/dev/urandom fd %d opened\n", fd);
3217 if (result != n_bytes)
3221 "Could not read /dev/urandom: %s",
3222 _dbus_strerror (errno));
3225 "Short read from /dev/urandom");
3232 _dbus_verbose (
"Read %d bytes from /dev/urandom\n",
3260 _dbus_strerror (
int error_number)
3264 msg = strerror (error_number);
3277 signal (SIGPIPE, SIG_IGN);
3292 val = fcntl (fd, F_GETFD, 0);
3299 fcntl (fd, F_SETFD, val);
3313 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3322 "Could not close fd %d", fd);
3343 #ifdef F_DUPFD_CLOEXEC 3346 new_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
3347 cloexec_done = new_fd >= 0;
3349 if (new_fd < 0 && errno == EINVAL)
3352 new_fd = fcntl(fd, F_DUPFD, 3);
3358 "Could not duplicate fd %d", fd);
3362 #ifdef F_DUPFD_CLOEXEC 3383 return _dbus_set_fd_nonblocking (fd.fd, error);
3387 _dbus_set_fd_nonblocking (
int fd,
3392 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3394 val = fcntl (fd, F_GETFL, 0);
3398 "Failed to get flags from file descriptor %d: %s",
3399 fd, _dbus_strerror (errno));
3400 _dbus_verbose (
"Failed to get flags for fd %d: %s\n", fd,
3401 _dbus_strerror (errno));
3405 if (fcntl (fd, F_SETFL, val | O_NONBLOCK) < 0)
3408 "Failed to set nonblocking flag of file descriptor %d: %s",
3409 fd, _dbus_strerror (errno));
3410 _dbus_verbose (
"Failed to set fd %d nonblocking: %s\n",
3411 fd, _dbus_strerror (errno));
3427 #if defined (HAVE_BACKTRACE) && defined (DBUS_BUILT_R_DYNAMIC) 3433 bt_size = backtrace (bt, 500);
3435 syms = backtrace_symbols (bt, bt_size);
3441 fprintf (stderr,
" %s\n", syms[i]);
3447 #elif defined (HAVE_BACKTRACE) && ! defined (DBUS_BUILT_R_DYNAMIC) 3448 fprintf (stderr,
" D-Bus not built with -rdynamic so unable to print a backtrace\n");
3450 fprintf (stderr,
" D-Bus not compiled with backtrace support so unable to print a backtrace\n");
3472 #ifdef HAVE_SOCKETPAIR 3479 retval = socketpair(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0, fds);
3480 cloexec_done = retval >= 0;
3482 if (retval < 0 && (errno == EINVAL || errno == EPROTOTYPE))
3485 retval = socketpair(AF_UNIX, SOCK_STREAM, 0, fds);
3491 "Could not create full-duplex pipe");
3495 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3506 (!_dbus_set_fd_nonblocking (fds[0],
NULL) ||
3507 !_dbus_set_fd_nonblocking (fds[1],
NULL)))
3510 "Could not set full-duplex pipe nonblocking");
3521 _dbus_verbose (
"full-duplex pipe %d <-> %d\n",
3526 _dbus_warn (
"_dbus_socketpair() not implemented on this OS");
3528 "_dbus_socketpair() not implemented on this OS");
3545 char static_buf[1024];
3546 int bufsize =
sizeof (static_buf);
3550 DBUS_VA_COPY (args_copy, args);
3551 len = vsnprintf (static_buf, bufsize, format, args_copy);
3568 DBUS_VA_COPY (args_copy, args);
3570 if (vsnprintf (static_buf, 1, format, args_copy) == 1)
3589 DBUS_VA_COPY (args_copy, args);
3590 len = vsnprintf (buf, bufsize, format, args_copy);
3615 static const char* tmpdir =
NULL;
3627 tmpdir = getenv(
"TMPDIR");
3633 tmpdir = getenv(
"TMP");
3635 tmpdir = getenv(
"TEMP");
3649 #if defined(DBUS_ENABLE_X11_AUTOLAUNCH) || defined(DBUS_ENABLE_LAUNCHD) 3670 _read_subprocess_line_argv (
const char *progpath,
3672 const char *
const *argv,
3676 int result_pipe[2] = { -1, -1 };
3677 int errors_pipe[2] = { -1, -1 };
3684 sigset_t new_set, old_set;
3686 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3693 sigemptyset (&new_set);
3694 sigaddset (&new_set, SIGCHLD);
3695 sigprocmask (SIG_BLOCK, &new_set, &old_set);
3697 orig_len = _dbus_string_get_length (result);
3701 if (pipe (result_pipe) < 0)
3704 "Failed to create a pipe to call %s: %s",
3705 progpath, _dbus_strerror (errno));
3706 _dbus_verbose (
"Failed to create a pipe to call %s: %s\n",
3707 progpath, _dbus_strerror (errno));
3710 if (pipe (errors_pipe) < 0)
3713 "Failed to create a pipe to call %s: %s",
3714 progpath, _dbus_strerror (errno));
3715 _dbus_verbose (
"Failed to create a pipe to call %s: %s\n",
3716 progpath, _dbus_strerror (errno));
3724 "Failed to fork() to call %s: %s",
3725 progpath, _dbus_strerror (errno));
3726 _dbus_verbose (
"Failed to fork() to call %s: %s\n",
3727 progpath, _dbus_strerror (errno));
3734 const char *error_str;
3738 int saved_errno = errno;
3743 if (write (errors_pipe[
WRITE_END], error_str, strlen (error_str)) < 0 ||
3744 write (errors_pipe[
WRITE_END],
": ", 2) < 0)
3749 error_str = _dbus_strerror (saved_errno);
3751 if (write (errors_pipe[
WRITE_END], error_str, strlen (error_str)) < 0)
3763 if (dup2 (result_pipe[
WRITE_END], 1) == -1)
3765 if (dup2 (errors_pipe[
WRITE_END], 2) == -1)
3770 sigprocmask (SIG_SETMASK, &old_set,
NULL);
3773 if (progpath[0] ==
'/')
3775 execv (progpath, (
char *
const *) argv);
3784 execvp (strrchr (progpath,
'/')+1, (
char *
const *) argv);
3787 execvp (progpath, (
char *
const *) argv);
3809 ret = waitpid (pid, &status, 0);
3811 while (ret == -1 && errno == EINTR);
3815 if (!WIFEXITED (status) || WEXITSTATUS (status) != 0 )
3821 _DBUS_SET_OOM (error);
3833 if (_dbus_string_get_length (&error_message) > 0)
3835 "%s terminated abnormally with the following error: %s",
3836 progpath, _dbus_string_get_data (&error_message));
3839 "%s terminated abnormally without any error message",
3847 sigprocmask (SIG_SETMASK, &old_set,
NULL);
3850 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3852 _DBUS_ASSERT_ERROR_IS_SET (error);
3854 if (result_pipe[0] != -1)
3855 close (result_pipe[0]);
3856 if (result_pipe[1] != -1)
3857 close (result_pipe[1]);
3858 if (errors_pipe[0] != -1)
3859 close (errors_pipe[0]);
3860 if (errors_pipe[1] != -1)
3861 close (errors_pipe[1]);
3884 #ifdef DBUS_ENABLE_X11_AUTOLAUNCH 3885 static const char arg_dbus_launch[] =
"dbus-launch";
3886 static const char arg_autolaunch[] =
"--autolaunch";
3887 static const char arg_binary_syntax[] =
"--binary-syntax";
3888 static const char arg_close_stderr[] =
"--close-stderr";
3893 const char *display;
3894 const char *progpath;
3895 const char *argv[6];
3903 "Unable to autolaunch when setuid");
3907 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3920 if (display ==
NULL || display[0] ==
'\0')
3923 "Unable to autolaunch a dbus-daemon without a $DISPLAY for X11");
3929 _DBUS_SET_OOM (error);
3938 #ifdef DBUS_ENABLE_EMBEDDED_TESTS 3941 if (progpath ==
NULL)
3943 progpath = DBUS_BINDIR
"/dbus-launch";
3950 argv[i] = arg_dbus_launch;
3952 argv[i] = arg_autolaunch;
3954 argv[i] = _dbus_string_get_data (&uuid);
3956 argv[i] = arg_binary_syntax;
3958 argv[i] = arg_close_stderr;
3965 retval = _read_subprocess_line_argv (progpath,
3967 argv, address, error);
3974 "Using X11 for dbus-daemon autolaunch was disabled at compile time, " 3975 "set your DBUS_SESSION_BUS_ADDRESS instead");
4020 if (create_if_not_found)
4032 if (!create_if_not_found)
4035 "D-Bus library appears to be incorrectly set up: " 4036 "see the manual page for dbus-uuidgen to correct " 4037 "this issue. (%s; %s)",
4065 const char *launchd_env_var,
4068 #ifdef DBUS_ENABLE_LAUNCHD 4072 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
4077 "Unable to find launchd socket when setuid");
4082 argv[i] =
"launchctl";
4086 argv[i] = (
char*)launchd_env_var;
4093 if (!_read_subprocess_line_argv(argv[0],
TRUE, argv, socket_path, error))
4099 if (_dbus_string_get_length(socket_path) == 0)
4109 "can't lookup socket from launchd; launchd support not compiled in");
4114 #ifdef DBUS_ENABLE_LAUNCHD 4124 "Unable to find launchd socket when setuid");
4130 _DBUS_SET_OOM (error);
4145 "launchd did not provide a socket path, " 4146 "verify that org.freedesktop.dbus-session.plist is loaded!");
4152 _DBUS_SET_OOM (error);
4157 _dbus_string_get_length (address)))
4159 _DBUS_SET_OOM (error);
4174 const char *runtime_dir =
_dbus_getenv (
"XDG_RUNTIME_DIR");
4179 if (runtime_dir ==
NULL)
4181 _dbus_verbose (
"XDG_RUNTIME_DIR not found in environment");
4188 _DBUS_SET_OOM (error);
4194 _DBUS_SET_OOM (error);
4198 if (lstat (_dbus_string_get_const_data (&user_bus_path), &stbuf) == -1)
4200 _dbus_verbose (
"XDG_RUNTIME_DIR/bus not available: %s",
4201 _dbus_strerror (errno));
4207 if (stbuf.st_uid != getuid ())
4209 _dbus_verbose (
"XDG_RUNTIME_DIR/bus owned by uid %ld, not our uid %ld",
4210 (
long) stbuf.st_uid, (
long) getuid ());
4216 if ((stbuf.st_mode & S_IFMT) != S_IFSOCK)
4218 _dbus_verbose (
"XDG_RUNTIME_DIR/bus is not a socket: st_mode = 0o%lo",
4219 (
long) stbuf.st_mode);
4228 _DBUS_SET_OOM (error);
4264 #ifdef DBUS_ENABLE_LAUNCHD 4266 return _dbus_lookup_session_address_launchd (address, error);
4270 if (!_dbus_lookup_user_bus (supported, address, error))
4272 else if (*supported)
4330 #ifdef DBUS_ENABLE_EMBEDDED_TESTS 4332 const char *
override;
4335 if (
override !=
NULL && *
override !=
'\0')
4341 _dbus_verbose (
"Using fake homedir for testing: %s\n",
4342 _dbus_string_get_const_data (&homedir));
4349 if (!already_warned)
4351 _dbus_warn (
"Using %s for testing, set DBUS_TEST_HOMEDIR to avoid",
4352 _dbus_string_get_const_data (&homedir));
4353 already_warned =
TRUE;
4365 directory, _dbus_string_get_length (directory))) {
4379 _dbus_daemon_publish_session_bus_address (
const char* addr,
4387 _dbus_daemon_unpublish_session_bus_address (
void)
4405 #if EAGAIN == EWOULDBLOCK 4408 return e == EAGAIN || e == EWOULDBLOCK;
4423 const char *filename_c;
4425 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
4427 filename_c = _dbus_string_get_const_data (filename);
4429 if (rmdir (filename_c) != 0)
4432 "Failed to remove directory %s: %s\n",
4433 filename_c, _dbus_strerror (errno));
4453 struct sockaddr_storage storage;
4454 struct sockaddr_un un;
4457 socklen_t sa_len =
sizeof(sa_buf);
4461 if (getsockname(fd.fd, &sa_buf.sa, &sa_len) < 0)
4464 return sa_buf.sa.sa_family == AF_UNIX;
4487 d = opendir (
"/proc/self/fd");
4501 if (de->d_name[0] ==
'.')
4505 l = strtol (de->d_name, &e, 10);
4506 if (errno != 0 || e ==
NULL || *e !=
'\0')
4513 if (fd == dirfd (d))
4524 maxfds = sysconf (_SC_OPEN_MAX);
4533 for (i = 3; i < maxfds; i++)
4552 #if 0 && defined(HAVE_LIBC_ENABLE_SECURE) 4555 extern int __libc_enable_secure;
4556 return __libc_enable_secure;
4558 #elif defined(HAVE_ISSETUGID) 4560 return issetugid ();
4562 uid_t ruid, euid, suid;
4563 gid_t rgid, egid, sgid;
4570 if (_DBUS_UNLIKELY (!check_setuid_initialised))
4572 #ifdef HAVE_GETRESUID 4573 if (getresuid (&ruid, &euid, &suid) != 0 ||
4574 getresgid (&rgid, &egid, &sgid) != 0)
4577 suid = ruid = getuid ();
4578 sgid = rgid = getgid ();
4583 check_setuid_initialised =
TRUE;
4584 is_setuid = (ruid != euid || ruid != suid ||
4585 rgid != egid || rgid != sgid);
4606 struct sockaddr_storage storage;
4607 struct sockaddr_un un;
4608 struct sockaddr_in ipv4;
4609 struct sockaddr_in6 ipv6;
4611 char hostip[INET6_ADDRSTRLEN];
4612 socklen_t size =
sizeof (socket);
4615 if (getsockname (fd.fd, &socket.sa, &size))
4618 switch (socket.sa.sa_family)
4621 if (socket.un.sun_path[0]==
'\0')
4637 if (inet_ntop (AF_INET, &socket.ipv4.sin_addr, hostip, sizeof (hostip)))
4639 hostip, ntohs (socket.ipv4.sin_port)))
4645 if (inet_ntop (AF_INET6, &socket.ipv6.sin6_addr, hostip, sizeof (hostip)))
4647 ntohs (socket.ipv6.sin6_port)) &&
4655 "Failed to read address from socket: Unknown socket type.");
4661 "Failed to open socket: %s",
4662 _dbus_strerror (errno));
4667 _dbus_save_socket_errno (
void)
4673 _dbus_restore_socket_errno (
int saved_errno)
4675 errno = saved_errno;
4678 static const char *syslog_tag =
"dbus";
4679 #ifdef HAVE_SYSLOG_H 4680 static DBusLogFlags log_flags = DBUS_LOG_FLAGS_STDERR;
4703 (flags & (DBUS_LOG_FLAGS_STDERR | DBUS_LOG_FLAGS_SYSTEM_LOG)) != 0);
4707 #ifdef HAVE_SYSLOG_H 4710 if (log_flags & DBUS_LOG_FLAGS_SYSTEM_LOG)
4711 openlog (tag, LOG_PID, LOG_DAEMON);
4728 #ifdef HAVE_SYSLOG_H 4729 if (log_flags & DBUS_LOG_FLAGS_SYSTEM_LOG)
4734 case DBUS_SYSTEM_LOG_INFO:
4735 flags = LOG_DAEMON | LOG_INFO;
4737 case DBUS_SYSTEM_LOG_WARNING:
4738 flags = LOG_DAEMON | LOG_WARNING;
4740 case DBUS_SYSTEM_LOG_SECURITY:
4741 flags = LOG_AUTH | LOG_NOTICE;
4743 case DBUS_SYSTEM_LOG_ERROR:
4744 flags = LOG_DAEMON|LOG_CRIT;
4750 DBUS_VA_COPY (tmp, args);
4751 vsyslog (flags, msg, tmp);
4757 if (log_flags & DBUS_LOG_FLAGS_STDERR)
4760 DBUS_VA_COPY (tmp, args);
4762 vfprintf (stderr, msg, tmp);
4763 fputc (
'\n', stderr);
dbus_bool_t _dbus_string_append(DBusString *str, const char *buffer)
Appends a nul-terminated C-style string to a DBusString.
DBUS_PRIVATE_EXPORT 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_PRIVATE_EXPORT dbus_bool_t _dbus_string_append_uint(DBusString *str, unsigned long value)
Appends an unsigned integer to a DBusString.
const char * message
public error message field
#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.
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_close_all(void)
Closes all file descriptors except the first three (i.e.
dbus_bool_t _dbus_string_lengthen(DBusString *str, int additional_length)
Makes a string longer by the given number of bytes.
dbus_bool_t _dbus_ensure_directory(const DBusString *filename, DBusError *error)
Creates a directory; succeeds if the directory is created or already existed.
void dbus_free(void *memory)
Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
dbus_bool_t _dbus_socketpair(DBusSocket *fd1, DBusSocket *fd2, dbus_bool_t blocking, DBusError *error)
Creates pair of connect sockets (as in socketpair()).
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 ...
dbus_bool_t _dbus_ensure_standard_fds(DBusEnsureStandardFdsFlags flags, const char **error_str_p)
Ensure that the standard file descriptors stdin, stdout and stderr are open, by opening /dev/null if ...
#define DBUS_ERROR_NOT_SUPPORTED
Requested operation isn't supported (like ENOSYS on UNIX).
#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
dbus_bool_t _dbus_generate_uuid(DBusGUID *uuid, DBusError *error)
Generates a new UUID.
dbus_bool_t _dbus_get_local_machine_uuid_encoded(DBusString *uuid_str, DBusError *error)
Gets the hex-encoded UUID of the machine this function is executed on.
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
dbus_bool_t _dbus_append_address_from_socket(DBusSocket fd, DBusString *address, DBusError *error)
Read the address from the socket and append it to the string.
#define DBUS_ERROR_INIT
Expands to a suitable initializer for a DBusError on the stack.
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.
dbus_bool_t _dbus_credentials_add_linux_security_label(DBusCredentials *credentials, const char *label)
Add a Linux security label, as used by LSMs such as SELinux, Smack and AppArmor, to the credentials...
A globally unique ID ; we have one for each DBusServer, and also one for each machine with libdbus in...
dbus_pid_t _dbus_getpid(void)
Gets our process ID.
#define _DBUS_POLLIN
There is data to read.
dbus_bool_t _dbus_concat_dir_and_file(DBusString *dir, const DBusString *next_component)
Appends the given filename to the given directory.
char * _dbus_string_get_data_len(DBusString *str, int start, int len)
Gets a sub-portion of the raw character buffer from the string.
int _dbus_read_socket(DBusSocket fd, DBusString *buffer, int count)
Like _dbus_read(), but only works on sockets so is available on Windows.
#define DBUS_MAXIMUM_MESSAGE_UNIX_FDS
The maximum total number of unix fds in a message.
dbus_bool_t _dbus_string_init(DBusString *str)
Initializes a string.
#define DBUS_ERROR_IO_ERROR
Something went wrong reading or writing to a socket, for example.
int _dbus_dup(int fd, DBusError *error)
Duplicates a file descriptor.
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...
#define DBUS_PID_UNSET
an invalid PID used to represent an uninitialized dbus_pid_t field
dbus_bool_t _dbus_send_credentials_socket(DBusSocket server_fd, DBusError *error)
Sends a single nul byte with our UNIX credentials as ancillary data.
dbus_bool_t _dbus_close_socket(DBusSocket fd, DBusError *error)
Closes a socket.
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.
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.
unsigned long dbus_pid_t
A process ID.
dbus_gid_t * group_ids
Groups IDs, including above primary group.
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_malloc(size_t bytes)
Allocates the given number of bytes, as with standard malloc().
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...
dbus_bool_t _dbus_credentials_are_anonymous(DBusCredentials *credentials)
Checks whether a credentials object contains a user identity.
dbus_bool_t _dbus_get_is_errno_eagain_or_ewouldblock(int e)
See if errno is EAGAIN or EWOULDBLOCK (this has to be done differently for Winsock so is abstracted) ...
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_listen_systemd_sockets(DBusSocket **fds, DBusError *error)
Acquires one or more sockets passed in from systemd.
#define _DBUS_POLLOUT
Writing now will not block.
void _dbus_warn(const char *format,...)
Prints a warning message to stderr.
int _dbus_write_socket_two(DBusSocket 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.
DBusSocket _dbus_accept(DBusSocket listen_fd)
Accepts a connection on a listening socket.
dbus_bool_t _dbus_string_init_preallocated(DBusString *str, int allocate_size)
Initializes a string that can be up to the given allocation size before it has to realloc...
dbus_int32_t _dbus_atomic_inc(DBusAtomic *atomic)
Atomically increments an integer.
void _dbus_print_backtrace(void)
On GNU libc systems, print a crude backtrace to stderr.
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_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.
dbus_bool_t _dbus_read_credentials_socket(DBusSocket client_fd, DBusCredentials *credentials, DBusError *error)
Reads a single byte which must be nul (an error occurs otherwise), and reads unix credentials if avai...
dbus_bool_t _dbus_create_directory(const DBusString *filename, DBusError *error)
Creates a directory.
dbus_bool_t _dbus_delete_directory(const DBusString *filename, DBusError *error)
Removes a directory; Directory must be empty.
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_get_monotonic_time(long *tv_sec, long *tv_usec)
Get current time, as in gettimeofday().
int _dbus_listen_tcp_socket(const char *host, const char *port, const char *family, DBusString *retport, DBusSocket **fds_p, DBusError *error)
Creates a socket and binds it to the given path, then listens on the socket.
void _dbus_disable_sigpipe(void)
signal (SIGPIPE, SIG_IGN);
#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.
#define _DBUS_N_ELEMENTS(array)
Computes the number of elements in a fixed-size array using sizeof().
int _dbus_read_socket_with_unix_fds(DBusSocket fd, DBusString *buffer, int count, int *fds, unsigned int *n_fds)
Like _dbus_read_socket() but also tries to read unix fds from the socket.
void _dbus_flush_caches(void)
Called when the bus daemon is signaled to reload its configuration; any caches should be nuked...
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. ...
const char * _dbus_get_tmpdir(void)
Gets the temporary files directory by inspecting the environment variables TMPDIR, TMP, and TEMP in that order.
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_uid_t _dbus_geteuid(void)
Gets our effective UID.
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".
DBusPollable fd
File descriptor.
#define _dbus_assert_not_reached(explanation)
Aborts with an error message if called.
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.
const char * name
public error name field
#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.
void _dbus_exit(int code)
Exit the process, returning the given value.
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_fd_set_close_on_exec(int fd)
Sets the file descriptor to be close on exec.
DBusSocket _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.
dbus_int32_t _dbus_atomic_dec(DBusAtomic *atomic)
Atomically decrement an integer.
dbus_uid_t _dbus_getuid(void)
Gets our UID.
void _dbus_init_system_log(const char *tag, DBusLogFlags flags)
Initialize the system log.
dbus_bool_t _dbus_generate_random_bytes(DBusString *str, int n_bytes, DBusError *error)
Generates the given number of securely random bytes, using the best mechanism we can come up with...
dbus_bool_t _dbus_user_info_fill_uid(DBusUserInfo *info, dbus_uid_t uid, DBusError *error)
Gets user info for the given user ID.
dbus_bool_t _dbus_set_socket_nonblocking(DBusSocket fd, DBusError *error)
Sets a file descriptor to be nonblocking.
#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. ...
dbus_bool_t _dbus_close(int fd, DBusError *error)
Closes a file descriptor.
void _dbus_logv(DBusSystemLogSeverity severity, const char *msg, va_list args)
Log a message to the system log file (e.g.
#define FALSE
Expands to "0".
dbus_bool_t _dbus_write_uuid_file(const DBusString *filename, const DBusGUID *uuid, DBusError *error)
Write the give UUID to a file.
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_socket(DBusSocket fd, const DBusString *buffer, int start, int len)
Like _dbus_write(), but only supports sockets and is thus available on Windows.
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.
dbus_int32_t _dbus_atomic_get(DBusAtomic *atomic)
Atomically get the value of an integer.
void _dbus_sleep_milliseconds(int milliseconds)
Sleeps the given number of milliseconds.
DBUS_PRIVATE_EXPORT void _dbus_verbose_bytes_of_string(const DBusString *str, int start, int len)
Dump the given part of the string to verbose log.
#define WRITE_END
Helps remember which end of the pipe is which.
unsigned long dbus_gid_t
A group ID.
void * dbus_realloc(void *memory, size_t bytes)
Resizes a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
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...
int dbus_int32_t
A 32-bit signed integer on all platforms.
char * _dbus_strdup(const char *str)
Duplicates a string.
#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.
dbus_bool_t _dbus_socket_can_pass_unix_fd(DBusSocket fd)
Checks whether file descriptors may be passed via the socket.
const char * _dbus_getenv(const char *varname)
Wrapper for getenv().
unsigned long dbus_uid_t
A user ID.
int _dbus_poll(DBusPollFD *fds, int n_fds, int timeout_milliseconds)
Wrapper for poll().
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.
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.
void _dbus_get_real_time(long *tv_sec, long *tv_usec)
Get current time, as in gettimeofday().
Information about a UNIX user.
#define _DBUS_POLLERR
Error condition.