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 if (m.msg_flags & MSG_CTRUNC)
450 for (cm = CMSG_FIRSTHDR(&m); cm; cm = CMSG_NXTHDR(&m, cm))
451 if (cm->cmsg_level == SOL_SOCKET && cm->cmsg_type == SCM_RIGHTS)
454 int *payload = (
int *) CMSG_DATA (cm);
455 size_t payload_len_bytes = (cm->cmsg_len - CMSG_LEN (0));
456 size_t payload_len_fds = payload_len_bytes /
sizeof (int);
461 _DBUS_STATIC_ASSERT (
sizeof (
size_t) >=
sizeof (
unsigned int));
463 if (_DBUS_LIKELY (payload_len_fds <= (
size_t) *n_fds))
466 fds_to_use = payload_len_fds;
474 fds_to_use = (size_t) *n_fds;
479 for (i = fds_to_use; i < payload_len_fds; i++)
485 memcpy (fds, payload, fds_to_use *
sizeof (
int));
490 *n_fds = (
unsigned int) fds_to_use;
495 for (i = 0; i < fds_to_use; i++)
518 _dbus_write_socket_with_unix_fds(
DBusSocket fd,
525 #ifndef HAVE_UNIX_FD_PASSING
534 return _dbus_write_socket_with_unix_fds_two(fd, buffer, start, len,
NULL, 0, 0, fds, n_fds);
539 _dbus_write_socket_with_unix_fds_two(
DBusSocket fd,
549 #ifndef HAVE_UNIX_FD_PASSING
557 buffer1, start1, len1,
558 buffer2, start2, len2);
571 iov[0].iov_base = (
char*) _dbus_string_get_const_data_len (buffer1, start1, len1);
572 iov[0].iov_len = len1;
576 iov[1].iov_base = (
char*) _dbus_string_get_const_data_len (buffer2, start2, len2);
577 iov[1].iov_len = len2;
582 m.msg_iovlen = buffer2 ? 2 : 1;
586 m.msg_controllen = CMSG_SPACE(n_fds *
sizeof(
int));
587 m.msg_control = alloca(m.msg_controllen);
588 memset(m.msg_control, 0, m.msg_controllen);
590 cm = CMSG_FIRSTHDR(&m);
591 cm->cmsg_level = SOL_SOCKET;
592 cm->cmsg_type = SCM_RIGHTS;
593 cm->cmsg_len = CMSG_LEN(n_fds *
sizeof(
int));
594 memcpy(CMSG_DATA(cm), fds, n_fds *
sizeof(
int));
599 bytes_written = sendmsg (fd.fd, &m, 0
600 #
if HAVE_DECL_MSG_NOSIGNAL
605 if (bytes_written < 0 && errno == EINTR)
609 if (bytes_written > 0)
613 return bytes_written;
639 #if HAVE_DECL_MSG_NOSIGNAL
640 struct iovec vectors[2];
652 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
655 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
663 vectors[0].iov_base = (
char*) data1;
664 vectors[0].iov_len = len1;
665 vectors[1].iov_base = (
char*) data2;
666 vectors[1].iov_len = len2;
670 m.msg_iovlen = data2 ? 2 : 1;
674 bytes_written = sendmsg (fd.fd, &m, MSG_NOSIGNAL);
676 if (bytes_written < 0 && errno == EINTR)
679 return bytes_written;
683 buffer2, start2, len2);
714 start = _dbus_string_get_length (buffer);
726 bytes_read = read (fd, data, count);
772 data = _dbus_string_get_const_data_len (buffer, start, len);
776 bytes_written = write (fd, data, len);
778 if (bytes_written < 0 && errno == EINTR)
782 if (bytes_written > 0)
786 return bytes_written;
826 struct iovec vectors[2];
831 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
834 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
842 vectors[0].iov_base = (
char*) data1;
843 vectors[0].iov_len = len1;
844 vectors[1].iov_base = (
char*) data2;
845 vectors[1].iov_len = len2;
849 bytes_written = writev (fd,
853 if (bytes_written < 0 && errno == EINTR)
856 return bytes_written;
863 if (ret1 == len1 && buffer2 !=
NULL)
877 #define _DBUS_MAX_SUN_PATH_LENGTH 99
915 struct sockaddr_un addr;
916 _DBUS_STATIC_ASSERT (
sizeof (addr.sun_path) > _DBUS_MAX_SUN_PATH_LENGTH);
918 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
920 _dbus_verbose (
"connecting to unix socket %s abstract=%d\n",
924 if (!_dbus_open_unix_socket (&fd, error))
926 _DBUS_ASSERT_ERROR_IS_SET(error);
929 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
932 addr.sun_family = AF_UNIX;
933 path_len = strlen (path);
938 addr.sun_path[0] =
'\0';
941 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
944 "Abstract socket name too long\n");
949 strncpy (&addr.sun_path[1], path, sizeof (addr.sun_path) - 2);
953 "Operating system does not support abstract socket namespace\n");
960 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
963 "Socket name too long\n");
968 strncpy (addr.sun_path, path, sizeof (addr.sun_path) - 1);
971 if (connect (fd, (
struct sockaddr*) &addr, _DBUS_STRUCT_OFFSET (
struct sockaddr_un, sun_path) + path_len) < 0)
975 "Failed to connect to socket %s: %s",
976 path, _dbus_strerror (errno));
982 if (!_dbus_set_fd_nonblocking (fd, error))
984 _DBUS_ASSERT_ERROR_IS_SET (error);
1015 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1017 _dbus_verbose (
"connecting to process %s\n", path);
1020 retval = socketpair (AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0, fds);
1021 cloexec_done = (retval >= 0);
1023 if (retval < 0 && (errno == EINVAL || errno == EPROTOTYPE))
1026 retval = socketpair (AF_UNIX, SOCK_STREAM, 0, fds);
1033 "Failed to create socket pair: %s",
1034 _dbus_strerror (errno));
1049 "Failed to fork() to call %s: %s",
1050 path, _dbus_strerror (errno));
1061 dup2 (fds[1], STDIN_FILENO);
1062 dup2 (fds[1], STDOUT_FILENO);
1064 if (fds[1] != STDIN_FILENO &&
1065 fds[1] != STDOUT_FILENO)
1073 execvp (path, (
char *
const *) argv);
1075 fprintf (stderr,
"Failed to execute process %s: %s\n", path, _dbus_strerror (errno));
1083 if (!_dbus_set_fd_nonblocking (fds[0], error))
1085 _DBUS_ASSERT_ERROR_IS_SET (error);
1117 struct sockaddr_un addr;
1119 _DBUS_STATIC_ASSERT (
sizeof (addr.sun_path) > _DBUS_MAX_SUN_PATH_LENGTH);
1121 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1123 _dbus_verbose (
"listening on unix socket %s abstract=%d\n",
1126 if (!_dbus_open_unix_socket (&listen_fd, error))
1128 _DBUS_ASSERT_ERROR_IS_SET(error);
1131 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1134 addr.sun_family = AF_UNIX;
1135 path_len = strlen (path);
1143 addr.sun_path[0] =
'\0';
1146 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
1149 "Abstract socket name too long\n");
1154 strncpy (&addr.sun_path[1], path, sizeof (addr.sun_path) - 2);
1158 "Operating system does not support abstract socket namespace\n");
1178 if (stat (path, &sb) == 0 &&
1179 S_ISSOCK (sb.st_mode))
1183 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
1186 "Socket name too long\n");
1191 strncpy (addr.sun_path, path, sizeof (addr.sun_path) - 1);
1194 if (bind (listen_fd, (
struct sockaddr*) &addr, _DBUS_STRUCT_OFFSET (
struct sockaddr_un, sun_path) + path_len) < 0)
1197 "Failed to bind socket \"%s\": %s",
1198 path, _dbus_strerror (errno));
1203 if (listen (listen_fd, SOMAXCONN ) < 0)
1206 "Failed to listen on socket \"%s\": %s",
1207 path, _dbus_strerror (errno));
1212 if (!_dbus_set_fd_nonblocking (listen_fd, error))
1214 _DBUS_ASSERT_ERROR_IS_SET (error);
1222 if (!
abstract && chmod (path, 0777) < 0)
1223 _dbus_warn (
"Could not set mode 0777 on socket %s", path);
1247 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1249 n = sd_listen_fds (
TRUE);
1253 "Failed to acquire systemd socket: %s",
1254 _dbus_strerror (-n));
1261 "No socket received.");
1265 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1267 r = sd_is_socket (fd, AF_UNSPEC, SOCK_STREAM, 1);
1271 "Failed to verify systemd socket type: %s",
1272 _dbus_strerror (-r));
1279 "Passed socket has wrong type.");
1291 "Failed to allocate file handle array.");
1295 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1297 if (!_dbus_set_fd_nonblocking (fd, error))
1299 _DBUS_ASSERT_ERROR_IS_SET (error);
1303 new_fds[fd - SD_LISTEN_FDS_START].fd = fd;
1311 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1320 "dbus was compiled without systemd support");
1328 _dbus_error_from_gai (
int gai_res,
1394 return _dbus_connect_tcp_socket_with_nonce (host, port, family, (
const char*)
NULL, error);
1398 _dbus_connect_tcp_socket_with_nonce (
const char *host,
1401 const char *noncefile,
1404 int saved_errno = 0;
1407 struct addrinfo hints;
1408 struct addrinfo *ai, *tmp;
1410 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1415 hints.ai_family = AF_UNSPEC;
1416 else if (!strcmp(family,
"ipv4"))
1417 hints.ai_family = AF_INET;
1418 else if (!strcmp(family,
"ipv6"))
1419 hints.ai_family = AF_INET6;
1424 "Unknown address family %s", family);
1425 return _dbus_socket_get_invalid ();
1427 hints.ai_protocol = IPPROTO_TCP;
1428 hints.ai_socktype = SOCK_STREAM;
1429 hints.ai_flags = AI_ADDRCONFIG;
1431 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0)
1434 _dbus_error_from_gai (res, errno),
1435 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1436 host, port, gai_strerror(res), res);
1437 return _dbus_socket_get_invalid ();
1443 if (!_dbus_open_socket (&fd.fd, tmp->ai_family, SOCK_STREAM, 0, error))
1446 _DBUS_ASSERT_ERROR_IS_SET(error);
1447 return _dbus_socket_get_invalid ();
1449 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1451 if (connect (fd.fd, (
struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) < 0)
1453 saved_errno = errno;
1468 "Failed to connect to socket \"%s:%s\" %s",
1469 host, port, _dbus_strerror(saved_errno));
1470 return _dbus_socket_get_invalid ();
1473 if (noncefile !=
NULL)
1478 ret = _dbus_send_nonce (fd, &noncefileStr, error);
1484 return _dbus_socket_get_invalid ();
1488 if (!_dbus_set_fd_nonblocking (fd.fd, error))
1491 return _dbus_socket_get_invalid ();
1522 int nlisten_fd = 0, res, i;
1524 struct addrinfo hints;
1525 struct addrinfo *ai, *tmp;
1526 unsigned int reuseaddr;
1529 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1534 hints.ai_family = AF_UNSPEC;
1535 else if (!strcmp(family,
"ipv4"))
1536 hints.ai_family = AF_INET;
1537 else if (!strcmp(family,
"ipv6"))
1538 hints.ai_family = AF_INET6;
1543 "Unknown address family %s", family);
1547 hints.ai_protocol = IPPROTO_TCP;
1548 hints.ai_socktype = SOCK_STREAM;
1549 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
1551 redo_lookup_with_port:
1553 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai)
1556 _dbus_error_from_gai (res, errno),
1557 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1558 host ? host :
"*", port, gai_strerror(res), res);
1565 int fd = -1, tcp_nodelay_on;
1568 if (!_dbus_open_socket (&fd, tmp->ai_family, SOCK_STREAM, 0, error))
1570 _DBUS_ASSERT_ERROR_IS_SET(error);
1573 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1576 if (setsockopt (fd, SOL_SOCKET, SO_REUSEADDR, &reuseaddr,
sizeof(reuseaddr))==-1)
1578 _dbus_warn (
"Failed to set socket option \"%s:%s\": %s",
1579 host ? host :
"*", port, _dbus_strerror (errno));
1585 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &tcp_nodelay_on,
sizeof (tcp_nodelay_on)) == -1)
1587 _dbus_warn (
"Failed to set TCP_NODELAY socket option \"%s:%s\": %s",
1588 host ? host :
"*", port, _dbus_strerror (errno));
1591 if (bind (fd, (
struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) < 0)
1593 saved_errno = errno;
1595 if (saved_errno == EADDRINUSE)
1613 "Failed to bind socket \"%s:%s\": %s",
1614 host ? host :
"*", port, _dbus_strerror (saved_errno));
1618 if (listen (fd, 30 ) < 0)
1620 saved_errno = errno;
1623 "Failed to listen on socket \"%s:%s\": %s",
1624 host ? host :
"*", port, _dbus_strerror (saved_errno));
1633 "Failed to allocate file handle array");
1636 listen_fd = newlisten_fd;
1637 listen_fd[nlisten_fd].fd = fd;
1640 if (!_dbus_string_get_length(retport))
1646 if (!port || !strcmp(port,
"0"))
1649 struct sockaddr_storage addr;
1653 addrlen =
sizeof(addr);
1654 result = getsockname(fd, (
struct sockaddr*) &addr, &addrlen);
1658 saved_errno = errno;
1660 "Failed to retrieve socket name for \"%s:%s\": %s",
1661 host ? host :
"*", port, _dbus_strerror (saved_errno));
1665 if ((res = getnameinfo ((
struct sockaddr*)&addr, addrlen,
NULL, 0,
1666 portbuf,
sizeof(portbuf),
1667 NI_NUMERICHOST | NI_NUMERICSERV)) != 0)
1669 saved_errno = errno;
1671 "Failed to resolve port \"%s:%s\": %s (%d)",
1672 host ? host :
"*", port, gai_strerror(res), res);
1683 port = _dbus_string_get_const_data(retport);
1685 goto redo_lookup_with_port;
1706 "Failed to bind socket \"%s:%s\": %s",
1707 host ? host :
"*", port, _dbus_strerror (errno));
1711 for (i = 0 ; i < nlisten_fd ; i++)
1713 if (!_dbus_set_fd_nonblocking (listen_fd[i].fd, error))
1726 for (i = 0 ; i < nlisten_fd ; i++)
1733 write_credentials_byte (
int server_fd,
1737 char buf[1] = {
'\0' };
1738 #if defined(HAVE_CMSGCRED)
1741 char cred[CMSG_SPACE (
sizeof (
struct cmsgcred))];
1752 msg.msg_control = (caddr_t) &cmsg;
1753 msg.msg_controllen = CMSG_SPACE (
sizeof (
struct cmsgcred));
1755 cmsg.hdr.cmsg_len = CMSG_LEN (
sizeof (
struct cmsgcred));
1756 cmsg.hdr.cmsg_level = SOL_SOCKET;
1757 cmsg.hdr.cmsg_type = SCM_CREDS;
1760 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1764 #if defined(HAVE_CMSGCRED)
1765 bytes_written = sendmsg (server_fd, &msg, 0
1766 #
if HAVE_DECL_MSG_NOSIGNAL
1774 if (bytes_written < 0 && errno == EINVAL)
1777 bytes_written = send (server_fd, buf, 1, 0
1778 #
if HAVE_DECL_MSG_NOSIGNAL
1784 if (bytes_written < 0 && errno == EINTR)
1787 if (bytes_written < 0)
1790 "Failed to write credentials byte: %s",
1791 _dbus_strerror (errno));
1794 else if (bytes_written == 0)
1797 "wrote zero bytes writing credentials byte");
1803 _dbus_verbose (
"wrote credentials byte\n");
1810 add_linux_security_label_to_credentials (
int client_fd,
1813 #if defined(__linux__) && defined(SO_PEERSEC)
1815 socklen_t len = 1024;
1822 while (getsockopt (client_fd, SOL_SOCKET, SO_PEERSEC,
1823 _dbus_string_get_data (&buf), &len) < 0)
1827 _dbus_verbose (
"getsockopt failed with %s, len now %lu\n",
1828 _dbus_strerror (e), (
unsigned long) len);
1830 if (e != ERANGE || len <= _dbus_string_get_length_uint (&buf))
1832 _dbus_verbose (
"Failed to getsockopt(SO_PEERSEC): %s\n",
1833 _dbus_strerror (e));
1845 _dbus_verbose (
"will try again with %lu\n", (
unsigned long) len);
1850 _dbus_verbose (
"getsockopt(SO_PEERSEC) yielded <= 0 bytes: %lu\n",
1851 (
unsigned long) len);
1855 if (len > _dbus_string_get_length_uint (&buf))
1857 _dbus_verbose (
"%lu > %u", (
unsigned long) len,
1858 _dbus_string_get_length_uint (&buf));
1862 if (_dbus_string_get_byte (&buf, len - 1) == 0)
1866 _dbus_verbose (
"subtracting trailing \\0\n");
1877 if (strlen (_dbus_string_get_const_data (&buf)) != len)
1882 _dbus_verbose (
"security label from kernel had an embedded \\0, "
1887 _dbus_verbose (
"getsockopt(SO_PEERSEC): %lu bytes excluding \\0: %s\n",
1888 (
unsigned long) len,
1889 _dbus_string_get_const_data (&buf));
1893 char* ss = _dbus_string_get_data (&buf);
1894 ss = strtok (ss,
",");
1899 _dbus_string_get_const_data (&buf)))
1966 #ifdef HAVE_CMSGCRED
1969 char cred[CMSG_SPACE (
sizeof (
struct cmsgcred))];
1977 _DBUS_STATIC_ASSERT (
sizeof (pid_t) <=
sizeof (
dbus_pid_t));
1978 _DBUS_STATIC_ASSERT (
sizeof (uid_t) <=
sizeof (
dbus_uid_t));
1979 _DBUS_STATIC_ASSERT (
sizeof (gid_t) <=
sizeof (
dbus_gid_t));
1984 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1988 iov.iov_base = &buf;
1995 #if defined(HAVE_CMSGCRED)
1997 msg.msg_control = (caddr_t) &cmsg;
1998 msg.msg_controllen = CMSG_SPACE (
sizeof (
struct cmsgcred));
2002 bytes_read = recvmsg (client_fd.fd, &msg, 0);
2015 "Failed to read credentials byte: %s",
2016 _dbus_strerror (errno));
2019 else if (bytes_read == 0)
2025 "Failed to read credentials byte (zero-length read)");
2028 else if (buf !=
'\0')
2031 "Credentials byte was not nul");
2035 _dbus_verbose (
"read credentials byte\n");
2048 struct sockpeercred cr;
2052 socklen_t cr_len =
sizeof (cr);
2054 if (getsockopt (client_fd.fd, SOL_SOCKET, SO_PEERCRED, &cr, &cr_len) != 0)
2056 _dbus_verbose (
"Failed to getsockopt(SO_PEERCRED): %s\n",
2057 _dbus_strerror (errno));
2059 else if (cr_len !=
sizeof (cr))
2061 _dbus_verbose (
"Failed to getsockopt(SO_PEERCRED), returned %d bytes, expected %d\n",
2062 cr_len, (
int)
sizeof (cr));
2069 #elif defined(HAVE_UNPCBID) && defined(LOCAL_PEEREID)
2073 socklen_t cr_len =
sizeof (cr);
2075 if (getsockopt (client_fd.fd, 0, LOCAL_PEEREID, &cr, &cr_len) != 0)
2077 _dbus_verbose (
"Failed to getsockopt(LOCAL_PEEREID): %s\n",
2078 _dbus_strerror (errno));
2080 else if (cr_len !=
sizeof (cr))
2082 _dbus_verbose (
"Failed to getsockopt(LOCAL_PEEREID), returned %d bytes, expected %d\n",
2083 cr_len, (
int)
sizeof (cr));
2087 pid_read = cr.unp_pid;
2088 uid_read = cr.unp_euid;
2090 #elif defined(HAVE_CMSGCRED)
2099 struct cmsgcred *cred;
2100 struct cmsghdr *cmsgp;
2102 for (cmsgp = CMSG_FIRSTHDR (&msg);
2104 cmsgp = CMSG_NXTHDR (&msg, cmsgp))
2106 if (cmsgp->cmsg_type == SCM_CREDS &&
2107 cmsgp->cmsg_level == SOL_SOCKET &&
2108 cmsgp->cmsg_len >= CMSG_LEN (
sizeof (
struct cmsgcred)))
2110 cred = (
struct cmsgcred *) CMSG_DATA (cmsgp);
2111 pid_read = cred->cmcred_pid;
2112 uid_read = cred->cmcred_euid;
2117 #elif defined(HAVE_GETPEERUCRED)
2121 ucred_t * ucred =
NULL;
2122 if (getpeerucred (client_fd.fd, &ucred) == 0)
2125 adt_session_data_t *adth =
NULL;
2127 pid_read = ucred_getpid (ucred);
2128 uid_read = ucred_geteuid (ucred);
2131 if (adt_start_session (&adth,
NULL, 0) || (adth ==
NULL))
2133 _dbus_verbose (
"Failed to adt_start_session(): %s\n", _dbus_strerror (errno));
2137 if (adt_set_from_ucred (adth, ucred, ADT_NEW))
2139 _dbus_verbose (
"Failed to adt_set_from_ucred(): %s\n", _dbus_strerror (errno));
2143 adt_export_data_t *data =
NULL;
2144 size_t size = adt_export_session_data (adth, &data);
2147 _dbus_verbose (
"Failed to adt_export_session_data(): %s\n", _dbus_strerror (errno));
2155 (void) adt_end_session (adth);
2161 _dbus_verbose (
"Failed to getpeerucred() credentials: %s\n", _dbus_strerror (errno));
2171 #elif defined(HAVE_GETPEEREID)
2189 if (getpeereid (client_fd.fd, &euid, &egid) == 0)
2195 _dbus_verbose (
"Failed to getpeereid() credentials: %s\n", _dbus_strerror (errno));
2199 #warning Socket credentials not supported on this Unix OS
2200 #warning Please tell https://bugs.freedesktop.org/enter_bug.cgi?product=DBus
2206 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
2207 defined(__linux__) || \
2208 defined(__OpenBSD__) || \
2210 # error Credentials passing not working on this OS is a regression!
2213 _dbus_verbose (
"Socket credentials not supported on this OS\n");
2217 _dbus_verbose (
"Credentials:"
2228 _DBUS_SET_OOM (error);
2237 _DBUS_SET_OOM (error);
2242 if (!add_linux_security_label_to_credentials (client_fd.fd, credentials))
2244 _DBUS_SET_OOM (error);
2272 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2274 if (write_credentials_byte (server_fd.fd, error))
2293 struct sockaddr addr;
2299 addrlen =
sizeof (addr);
2309 client_fd.fd = accept4 (listen_fd.fd, &addr, &addrlen, SOCK_CLOEXEC);
2310 cloexec_done = client_fd.fd >= 0;
2312 if (client_fd.fd < 0 && (errno == ENOSYS || errno == EINVAL))
2315 client_fd.fd = accept (listen_fd.fd, &addr, &addrlen);
2318 if (client_fd.fd < 0)
2324 _dbus_verbose (
"client fd %d accepted\n", client_fd.fd);
2347 const char *directory;
2350 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2352 directory = _dbus_string_get_const_data (dir);
2354 if (stat (directory, &sb) < 0)
2357 "%s", _dbus_strerror (errno));
2362 if (sb.st_uid != geteuid ())
2365 "%s directory is owned by user %lu, not %lu",
2367 (
unsigned long) sb.st_uid,
2368 (
unsigned long) geteuid ());
2372 if ((S_IROTH & sb.st_mode) || (S_IWOTH & sb.st_mode) ||
2373 (S_IRGRP & sb.st_mode) || (S_IWGRP & sb.st_mode))
2376 "%s directory is not private to the user", directory);
2384 fill_user_info_from_passwd (
struct passwd *p,
2391 info->
uid = p->pw_uid;
2412 const char *username_c;
2425 if (username !=
NULL)
2426 username_c = _dbus_string_get_const_data (username);
2435 #if defined (HAVE_POSIX_GETPWNAM_R) || defined (HAVE_NONPOSIX_GETPWNAM_R)
2441 struct passwd p_str;
2444 buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
2450 if ((
long) buflen <= 0)
2464 #ifdef HAVE_POSIX_GETPWNAM_R
2466 result = getpwuid_r (uid, &p_str, buf, buflen,
2469 result = getpwnam_r (username_c, &p_str, buf, buflen,
2473 p = getpwuid_r (uid, &p_str, buf, buflen);
2475 p = getpwnam_r (username_c, &p_str, buf, buflen);
2479 if (result == ERANGE && buflen < 512 * 1024)
2489 if (result == 0 && p == &p_str)
2491 if (!fill_user_info_from_passwd (p, info, error))
2501 "User \"%s\" unknown or no memory to allocate password entry\n",
2502 username_c ? username_c :
"???");
2503 _dbus_verbose (
"User %s unknown\n", username_c ? username_c :
"???");
2516 p = getpwnam (username_c);
2520 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 :
"???");
2539 #ifdef HAVE_GETGROUPLIST
2544 int initial_buf_count;
2546 initial_buf_count = 17;
2547 buf_count = initial_buf_count;
2555 if (getgrouplist (username_c,
2557 buf, &buf_count) < 0)
2573 if (buf_count == initial_buf_count)
2588 if (getgrouplist (username_c, info->
primary_gid, buf, &buf_count) < 0)
2592 _dbus_warn (
"It appears that username \"%s\" is in more than %d groups.\nProceeding with just the first %d groups.",
2593 username_c, buf_count, buf_count);
2599 "Failed to get groups for username \"%s\" primary GID "
2602 _dbus_strerror (errno));
2617 for (i = 0; i < buf_count; ++i)
2640 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2645 _DBUS_ASSERT_ERROR_IS_SET (error);
2679 return fill_user_info (info, uid,
2697 _DBUS_STATIC_ASSERT (
sizeof (pid_t) <=
sizeof (
dbus_pid_t));
2698 _DBUS_STATIC_ASSERT (
sizeof (uid_t) <=
sizeof (
dbus_uid_t));
2699 _DBUS_STATIC_ASSERT (
sizeof (gid_t) <=
sizeof (
dbus_gid_t));
2781 if (_dbus_string_get_length (uid_str) == 0)
2783 _dbus_verbose (
"UID string was zero length\n");
2792 _dbus_verbose (
"could not parse string as a UID\n");
2796 if (end != _dbus_string_get_length (uid_str))
2798 _dbus_verbose (
"string contained trailing stuff after UID\n");
2813 static pthread_mutex_t atomic_mutex = PTHREAD_MUTEX_INITIALIZER;
2826 return __sync_add_and_fetch(&atomic->
value, 1)-1;
2830 pthread_mutex_lock (&atomic_mutex);
2831 res = atomic->
value;
2833 pthread_mutex_unlock (&atomic_mutex);
2849 return __sync_sub_and_fetch(&atomic->
value, 1)+1;
2853 pthread_mutex_lock (&atomic_mutex);
2854 res = atomic->
value;
2856 pthread_mutex_unlock (&atomic_mutex);
2873 __sync_synchronize ();
2874 return atomic->
value;
2878 pthread_mutex_lock (&atomic_mutex);
2879 res = atomic->
value;
2880 pthread_mutex_unlock (&atomic_mutex);
2897 int timeout_milliseconds)
2899 #if defined(HAVE_POLL) && !defined(BROKEN_POLL)
2901 if (timeout_milliseconds < -1)
2903 timeout_milliseconds = -1;
2908 timeout_milliseconds);
2911 fd_set read_set, write_set, err_set;
2917 FD_ZERO (&read_set);
2918 FD_ZERO (&write_set);
2921 for (i = 0; i < n_fds; i++)
2926 FD_SET (fdp->
fd, &read_set);
2929 FD_SET (fdp->
fd, &write_set);
2931 FD_SET (fdp->
fd, &err_set);
2933 max_fd = MAX (max_fd, fdp->
fd);
2936 tv.tv_sec = timeout_milliseconds / 1000;
2937 tv.tv_usec = (timeout_milliseconds % 1000) * 1000;
2939 ready = select (max_fd + 1, &read_set, &write_set, &err_set,
2940 timeout_milliseconds < 0 ?
NULL : &tv);
2944 for (i = 0; i < n_fds; i++)
2950 if (FD_ISSET (fdp->
fd, &read_set))
2953 if (FD_ISSET (fdp->
fd, &write_set))
2956 if (FD_ISSET (fdp->
fd, &err_set))
2976 #ifdef HAVE_MONOTONIC_CLOCK
2978 clock_gettime (CLOCK_MONOTONIC, &ts);
2981 *tv_sec = ts.tv_sec;
2983 *tv_usec = ts.tv_nsec / 1000;
2987 gettimeofday (&t,
NULL);
2992 *tv_usec = t.tv_usec;
3009 gettimeofday (&t,
NULL);
3014 *tv_usec = t.tv_usec;
3029 const char *filename_c;
3031 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3033 filename_c = _dbus_string_get_const_data (filename);
3035 if (mkdir (filename_c, 0700) < 0)
3037 if (errno == EEXIST)
3041 "Failed to create directory %s: %s\n",
3042 filename_c, _dbus_strerror (errno));
3061 const char *filename_c;
3063 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3065 filename_c = _dbus_string_get_const_data (filename);
3067 if (mkdir (filename_c, 0700) < 0)
3070 "Failed to create directory %s: %s\n",
3071 filename_c, _dbus_strerror (errno));
3095 if (_dbus_string_get_length (dir) == 0 ||
3096 _dbus_string_get_length (next_component) == 0)
3099 dir_ends_in_slash =
'/' == _dbus_string_get_byte (dir,
3100 _dbus_string_get_length (dir) - 1);
3102 file_starts_with_slash =
'/' == _dbus_string_get_byte (next_component, 0);
3104 if (dir_ends_in_slash && file_starts_with_slash)
3108 else if (!(dir_ends_in_slash || file_starts_with_slash))
3115 _dbus_string_get_length (dir));
3119 #define NANOSECONDS_PER_SECOND 1000000000
3121 #define MICROSECONDS_PER_SECOND 1000000
3123 #define MILLISECONDS_PER_SECOND 1000
3125 #define NANOSECONDS_PER_MILLISECOND 1000000
3127 #define MICROSECONDS_PER_MILLISECOND 1000
3136 #ifdef HAVE_NANOSLEEP
3137 struct timespec req;
3138 struct timespec rem;
3140 req.tv_sec = milliseconds / MILLISECONDS_PER_SECOND;
3141 req.tv_nsec = (milliseconds % MILLISECONDS_PER_SECOND) * NANOSECONDS_PER_MILLISECOND;
3145 while (nanosleep (&req, &rem) < 0 && errno == EINTR)
3147 #elif defined (HAVE_USLEEP)
3148 usleep (milliseconds * MICROSECONDS_PER_MILLISECOND);
3150 sleep (MAX (milliseconds / 1000, 1));
3172 old_len = _dbus_string_get_length (str);
3176 fd = open (
"/dev/urandom", O_RDONLY);
3181 "Could not open /dev/urandom: %s",
3182 _dbus_strerror (errno));
3186 _dbus_verbose (
"/dev/urandom fd %d opened\n", fd);
3190 if (result != n_bytes)
3194 "Could not read /dev/urandom: %s",
3195 _dbus_strerror (errno));
3198 "Short read from /dev/urandom");
3205 _dbus_verbose (
"Read %d bytes from /dev/urandom\n",
3233 _dbus_strerror (
int error_number)
3237 msg = strerror (error_number);
3250 signal (SIGPIPE, SIG_IGN);
3265 val = fcntl (fd, F_GETFD, 0);
3272 fcntl (fd, F_SETFD, val);
3286 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3295 "Could not close fd %d", fd);
3316 #ifdef F_DUPFD_CLOEXEC
3319 new_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
3320 cloexec_done = new_fd >= 0;
3322 if (new_fd < 0 && errno == EINVAL)
3325 new_fd = fcntl(fd, F_DUPFD, 3);
3331 "Could not duplicate fd %d", fd);
3335 #ifdef F_DUPFD_CLOEXEC
3356 return _dbus_set_fd_nonblocking (fd.fd, error);
3360 _dbus_set_fd_nonblocking (
int fd,
3365 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3367 val = fcntl (fd, F_GETFL, 0);
3371 "Failed to get flags from file descriptor %d: %s",
3372 fd, _dbus_strerror (errno));
3373 _dbus_verbose (
"Failed to get flags for fd %d: %s\n", fd,
3374 _dbus_strerror (errno));
3378 if (fcntl (fd, F_SETFL, val | O_NONBLOCK) < 0)
3381 "Failed to set nonblocking flag of file descriptor %d: %s",
3382 fd, _dbus_strerror (errno));
3383 _dbus_verbose (
"Failed to set fd %d nonblocking: %s\n",
3384 fd, _dbus_strerror (errno));
3400 #if defined (HAVE_BACKTRACE) && defined (DBUS_BUILT_R_DYNAMIC)
3406 bt_size = backtrace (bt, 500);
3408 syms = backtrace_symbols (bt, bt_size);
3414 fprintf (stderr,
" %s\n", syms[i]);
3420 #elif defined (HAVE_BACKTRACE) && ! defined (DBUS_BUILT_R_DYNAMIC)
3421 fprintf (stderr,
" D-Bus not built with -rdynamic so unable to print a backtrace\n");
3423 fprintf (stderr,
" D-Bus not compiled with backtrace support so unable to print a backtrace\n");
3445 #ifdef HAVE_SOCKETPAIR
3452 retval = socketpair(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0, fds);
3453 cloexec_done = retval >= 0;
3455 if (retval < 0 && (errno == EINVAL || errno == EPROTOTYPE))
3458 retval = socketpair(AF_UNIX, SOCK_STREAM, 0, fds);
3464 "Could not create full-duplex pipe");
3468 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3479 (!_dbus_set_fd_nonblocking (fds[0],
NULL) ||
3480 !_dbus_set_fd_nonblocking (fds[1],
NULL)))
3483 "Could not set full-duplex pipe nonblocking");
3494 _dbus_verbose (
"full-duplex pipe %d <-> %d\n",
3499 _dbus_warn (
"_dbus_socketpair() not implemented on this OS");
3501 "_dbus_socketpair() not implemented on this OS");
3518 char static_buf[1024];
3519 int bufsize =
sizeof (static_buf);
3523 DBUS_VA_COPY (args_copy, args);
3524 len = vsnprintf (static_buf, bufsize, format, args_copy);
3541 DBUS_VA_COPY (args_copy, args);
3543 if (vsnprintf (static_buf, 1, format, args_copy) == 1)
3562 DBUS_VA_COPY (args_copy, args);
3563 len = vsnprintf (buf, bufsize, format, args_copy);
3588 static const char* tmpdir =
NULL;
3600 tmpdir = getenv(
"TMPDIR");
3606 tmpdir = getenv(
"TMP");
3608 tmpdir = getenv(
"TEMP");
3622 #if defined(DBUS_ENABLE_X11_AUTOLAUNCH) || defined(DBUS_ENABLE_LAUNCHD)
3643 _read_subprocess_line_argv (
const char *progpath,
3645 const char *
const *argv,
3649 int result_pipe[2] = { -1, -1 };
3650 int errors_pipe[2] = { -1, -1 };
3657 sigset_t new_set, old_set;
3659 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3666 sigemptyset (&new_set);
3667 sigaddset (&new_set, SIGCHLD);
3668 sigprocmask (SIG_BLOCK, &new_set, &old_set);
3670 orig_len = _dbus_string_get_length (result);
3674 if (pipe (result_pipe) < 0)
3677 "Failed to create a pipe to call %s: %s",
3678 progpath, _dbus_strerror (errno));
3679 _dbus_verbose (
"Failed to create a pipe to call %s: %s\n",
3680 progpath, _dbus_strerror (errno));
3683 if (pipe (errors_pipe) < 0)
3686 "Failed to create a pipe to call %s: %s",
3687 progpath, _dbus_strerror (errno));
3688 _dbus_verbose (
"Failed to create a pipe to call %s: %s\n",
3689 progpath, _dbus_strerror (errno));
3697 "Failed to fork() to call %s: %s",
3698 progpath, _dbus_strerror (errno));
3699 _dbus_verbose (
"Failed to fork() to call %s: %s\n",
3700 progpath, _dbus_strerror (errno));
3707 const char *error_str;
3711 int saved_errno = errno;
3716 if (write (errors_pipe[
WRITE_END], error_str, strlen (error_str)) < 0 ||
3717 write (errors_pipe[
WRITE_END],
": ", 2) < 0)
3722 error_str = _dbus_strerror (saved_errno);
3724 if (write (errors_pipe[
WRITE_END], error_str, strlen (error_str)) < 0)
3736 if (dup2 (result_pipe[
WRITE_END], 1) == -1)
3738 if (dup2 (errors_pipe[
WRITE_END], 2) == -1)
3743 sigprocmask (SIG_SETMASK, &old_set,
NULL);
3746 if (progpath[0] ==
'/')
3748 execv (progpath, (
char *
const *) argv);
3757 execvp (strrchr (progpath,
'/')+1, (
char *
const *) argv);
3760 execvp (progpath, (
char *
const *) argv);
3782 ret = waitpid (pid, &status, 0);
3784 while (ret == -1 && errno == EINTR);
3788 if (!WIFEXITED (status) || WEXITSTATUS (status) != 0 )
3794 _DBUS_SET_OOM (error);
3806 if (_dbus_string_get_length (&error_message) > 0)
3808 "%s terminated abnormally with the following error: %s",
3809 progpath, _dbus_string_get_data (&error_message));
3812 "%s terminated abnormally without any error message",
3820 sigprocmask (SIG_SETMASK, &old_set,
NULL);
3823 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3825 _DBUS_ASSERT_ERROR_IS_SET (error);
3827 if (result_pipe[0] != -1)
3828 close (result_pipe[0]);
3829 if (result_pipe[1] != -1)
3830 close (result_pipe[1]);
3831 if (errors_pipe[0] != -1)
3832 close (errors_pipe[0]);
3833 if (errors_pipe[1] != -1)
3834 close (errors_pipe[1]);
3857 #ifdef DBUS_ENABLE_X11_AUTOLAUNCH
3858 static const char arg_dbus_launch[] =
"dbus-launch";
3859 static const char arg_autolaunch[] =
"--autolaunch";
3860 static const char arg_binary_syntax[] =
"--binary-syntax";
3861 static const char arg_close_stderr[] =
"--close-stderr";
3866 const char *display;
3867 const char *progpath;
3868 const char *argv[6];
3876 "Unable to autolaunch when setuid");
3880 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3893 if (display ==
NULL || display[0] ==
'\0')
3896 "Unable to autolaunch a dbus-daemon without a $DISPLAY for X11");
3902 _DBUS_SET_OOM (error);
3911 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
3914 if (progpath ==
NULL)
3916 progpath = DBUS_BINDIR
"/dbus-launch";
3923 argv[i] = arg_dbus_launch;
3925 argv[i] = arg_autolaunch;
3927 argv[i] = _dbus_string_get_data (&uuid);
3929 argv[i] = arg_binary_syntax;
3931 argv[i] = arg_close_stderr;
3938 retval = _read_subprocess_line_argv (progpath,
3940 argv, address, error);
3947 "Using X11 for dbus-daemon autolaunch was disabled at compile time, "
3948 "set your DBUS_SESSION_BUS_ADDRESS instead");
3993 if (create_if_not_found)
4005 if (!create_if_not_found)
4008 "D-Bus library appears to be incorrectly set up: "
4009 "see the manual page for dbus-uuidgen to correct "
4010 "this issue. (%s; %s)",
4038 const char *launchd_env_var,
4041 #ifdef DBUS_ENABLE_LAUNCHD
4045 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
4050 "Unable to find launchd socket when setuid");
4055 argv[i] =
"launchctl";
4059 argv[i] = (
char*)launchd_env_var;
4066 if (!_read_subprocess_line_argv(argv[0],
TRUE, argv, socket_path, error))
4072 if (_dbus_string_get_length(socket_path) == 0)
4082 "can't lookup socket from launchd; launchd support not compiled in");
4087 #ifdef DBUS_ENABLE_LAUNCHD
4097 "Unable to find launchd socket when setuid");
4103 _DBUS_SET_OOM (error);
4118 "launchd did not provide a socket path, "
4119 "verify that org.freedesktop.dbus-session.plist is loaded!");
4125 _DBUS_SET_OOM (error);
4130 _dbus_string_get_length (address)))
4132 _DBUS_SET_OOM (error);
4147 const char *runtime_dir =
_dbus_getenv (
"XDG_RUNTIME_DIR");
4152 if (runtime_dir ==
NULL)
4154 _dbus_verbose (
"XDG_RUNTIME_DIR not found in environment");
4161 _DBUS_SET_OOM (error);
4167 _DBUS_SET_OOM (error);
4171 if (lstat (_dbus_string_get_const_data (&user_bus_path), &stbuf) == -1)
4173 _dbus_verbose (
"XDG_RUNTIME_DIR/bus not available: %s",
4174 _dbus_strerror (errno));
4180 if (stbuf.st_uid != getuid ())
4182 _dbus_verbose (
"XDG_RUNTIME_DIR/bus owned by uid %ld, not our uid %ld",
4183 (
long) stbuf.st_uid, (
long) getuid ());
4189 if ((stbuf.st_mode & S_IFMT) != S_IFSOCK)
4191 _dbus_verbose (
"XDG_RUNTIME_DIR/bus is not a socket: st_mode = 0o%lo",
4192 (
long) stbuf.st_mode);
4201 _DBUS_SET_OOM (error);
4237 #ifdef DBUS_ENABLE_LAUNCHD
4239 return _dbus_lookup_session_address_launchd (address, error);
4243 if (!_dbus_lookup_user_bus (supported, address, error))
4245 else if (*supported)
4303 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
4305 const char *
override;
4308 if (
override !=
NULL && *
override !=
'\0')
4314 _dbus_verbose (
"Using fake homedir for testing: %s\n",
4315 _dbus_string_get_const_data (&homedir));
4322 if (!already_warned)
4324 _dbus_warn (
"Using %s for testing, set DBUS_TEST_HOMEDIR to avoid",
4325 _dbus_string_get_const_data (&homedir));
4326 already_warned =
TRUE;
4338 directory, _dbus_string_get_length (directory))) {
4352 _dbus_daemon_publish_session_bus_address (
const char* addr,
4360 _dbus_daemon_unpublish_session_bus_address (
void)
4378 #if EAGAIN == EWOULDBLOCK
4381 return e == EAGAIN || e == EWOULDBLOCK;
4396 const char *filename_c;
4398 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
4400 filename_c = _dbus_string_get_const_data (filename);
4402 if (rmdir (filename_c) != 0)
4405 "Failed to remove directory %s: %s\n",
4406 filename_c, _dbus_strerror (errno));
4426 struct sockaddr_storage storage;
4427 struct sockaddr_un un;
4430 socklen_t sa_len =
sizeof(sa_buf);
4434 if (getsockname(fd.fd, &sa_buf.sa, &sa_len) < 0)
4437 return sa_buf.sa.sa_family == AF_UNIX;
4460 d = opendir (
"/proc/self/fd");
4474 if (de->d_name[0] ==
'.')
4478 l = strtol (de->d_name, &e, 10);
4479 if (errno != 0 || e ==
NULL || *e !=
'\0')
4486 if (fd == dirfd (d))
4497 maxfds = sysconf (_SC_OPEN_MAX);
4506 for (i = 3; i < maxfds; i++)
4525 #if 0 && defined(HAVE_LIBC_ENABLE_SECURE)
4528 extern int __libc_enable_secure;
4529 return __libc_enable_secure;
4531 #elif defined(HAVE_ISSETUGID)
4533 return issetugid ();
4535 uid_t ruid, euid, suid;
4536 gid_t rgid, egid, sgid;
4543 if (_DBUS_UNLIKELY (!check_setuid_initialised))
4545 #ifdef HAVE_GETRESUID
4546 if (getresuid (&ruid, &euid, &suid) != 0 ||
4547 getresgid (&rgid, &egid, &sgid) != 0)
4550 suid = ruid = getuid ();
4551 sgid = rgid = getgid ();
4556 check_setuid_initialised =
TRUE;
4557 is_setuid = (ruid != euid || ruid != suid ||
4558 rgid != egid || rgid != sgid);
4579 struct sockaddr_storage storage;
4580 struct sockaddr_un un;
4581 struct sockaddr_in ipv4;
4582 struct sockaddr_in6 ipv6;
4584 char hostip[INET6_ADDRSTRLEN];
4585 socklen_t size =
sizeof (socket);
4588 if (getsockname (fd.fd, &socket.sa, &size))
4591 switch (socket.sa.sa_family)
4594 if (socket.un.sun_path[0]==
'\0')
4610 if (inet_ntop (AF_INET, &socket.ipv4.sin_addr, hostip, sizeof (hostip)))
4612 hostip, ntohs (socket.ipv4.sin_port)))
4618 if (inet_ntop (AF_INET6, &socket.ipv6.sin6_addr, hostip, sizeof (hostip)))
4620 ntohs (socket.ipv6.sin6_port)) &&
4628 "Failed to read address from socket: Unknown socket type.");
4634 "Failed to open socket: %s",
4635 _dbus_strerror (errno));
4640 _dbus_save_socket_errno (
void)
4646 _dbus_restore_socket_errno (
int saved_errno)
4648 errno = saved_errno;
4651 static const char *syslog_tag =
"dbus";
4652 #ifdef HAVE_SYSLOG_H
4653 static DBusLogFlags log_flags = DBUS_LOG_FLAGS_STDERR;
4676 (flags & (DBUS_LOG_FLAGS_STDERR | DBUS_LOG_FLAGS_SYSTEM_LOG)) != 0);
4680 #ifdef HAVE_SYSLOG_H
4683 if (log_flags & DBUS_LOG_FLAGS_SYSTEM_LOG)
4684 openlog (tag, LOG_PID, LOG_DAEMON);
4701 #ifdef HAVE_SYSLOG_H
4702 if (log_flags & DBUS_LOG_FLAGS_SYSTEM_LOG)
4707 case DBUS_SYSTEM_LOG_INFO:
4708 flags = LOG_DAEMON | LOG_INFO;
4710 case DBUS_SYSTEM_LOG_WARNING:
4711 flags = LOG_DAEMON | LOG_WARNING;
4713 case DBUS_SYSTEM_LOG_SECURITY:
4714 flags = LOG_AUTH | LOG_NOTICE;
4716 case DBUS_SYSTEM_LOG_ERROR:
4717 flags = LOG_DAEMON|LOG_CRIT;
4723 DBUS_VA_COPY (tmp, args);
4724 vsyslog (flags, msg, tmp);
4730 if (log_flags & DBUS_LOG_FLAGS_STDERR)
4733 DBUS_VA_COPY (tmp, args);
4735 vfprintf (stderr, msg, tmp);
4736 fputc (
'\n', stderr);