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> 74 #ifdef HAVE_GETPEERUCRED 86 #include <systemd/sd-daemon.h> 98 #define AI_ADDRCONFIG 0 101 #ifndef HAVE_SOCKLEN_T 102 #define socklen_t int 105 #if defined (__sun) || defined (__sun__) 118 # define CMSG_ALIGN(len) _CMSG_DATA_ALIGN (len) 121 # define CMSG_ALIGN(len) (((len) + sizeof (long) - 1) & \ 122 ~(sizeof (long) - 1)) 127 # define CMSG_SPACE(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + \ 132 # define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len)) 153 const char **error_str_p)
155 static int const relevant_flag[] = { DBUS_FORCE_STDIN_NULL,
156 DBUS_FORCE_STDOUT_NULL,
157 DBUS_FORCE_STDERR_NULL };
159 const char *error_str =
"Failed mysteriously";
163 _DBUS_STATIC_ASSERT (STDIN_FILENO == 0);
164 _DBUS_STATIC_ASSERT (STDOUT_FILENO == 1);
165 _DBUS_STATIC_ASSERT (STDERR_FILENO == 2);
168 for (i = STDIN_FILENO; i <= STDERR_FILENO; i++)
174 devnull = open (
"/dev/null", O_RDWR);
178 error_str =
"Failed to open /dev/null";
187 if (devnull != i && (flags & relevant_flag[i]) != 0)
189 if (dup2 (devnull, i) < 0)
191 error_str =
"Failed to dup2 /dev/null onto a standard fd";
202 if (devnull > STDERR_FILENO)
205 if (error_str_p !=
NULL)
206 *error_str_p = error_str;
209 return (error_str ==
NULL);
212 static dbus_bool_t _dbus_set_fd_nonblocking (
int fd,
216 _dbus_open_socket (
int *fd_p,
225 *fd_p = socket (domain, type | SOCK_CLOEXEC, protocol);
226 cloexec_done = *fd_p >= 0;
229 if (*fd_p < 0 && (errno == EINVAL || errno == EPROTOTYPE))
232 *fd_p = socket (domain, type, protocol);
244 _dbus_verbose (
"socket fd %d opened\n", *fd_p);
251 "Failed to open socket: %s",
252 _dbus_strerror (errno));
268 _dbus_open_unix_socket (
int *fd,
271 return _dbus_open_socket(fd, PF_UNIX, SOCK_STREAM, 0, error);
322 #if HAVE_DECL_MSG_NOSIGNAL 326 data = _dbus_string_get_const_data_len (buffer, start, len);
330 bytes_written = send (fd.fd, data, len, MSG_NOSIGNAL);
332 if (bytes_written < 0 && errno == EINTR)
335 return bytes_written;
360 #ifndef HAVE_UNIX_FD_PASSING 378 start = _dbus_string_get_length (buffer);
398 m.msg_controllen = CMSG_SPACE(*n_fds *
sizeof(
int));
402 m.msg_control = alloca(m.msg_controllen);
403 memset(m.msg_control, 0, m.msg_controllen);
409 m.msg_controllen = CMSG_LEN (*n_fds *
sizeof(
int));
413 bytes_read = recvmsg (fd.fd, &m, 0
414 #ifdef MSG_CMSG_CLOEXEC
435 for (cm = CMSG_FIRSTHDR(&m); cm; cm = CMSG_NXTHDR(&m, cm))
436 if (cm->cmsg_level == SOL_SOCKET && cm->cmsg_type == SCM_RIGHTS)
439 int *payload = (
int *) CMSG_DATA (cm);
440 size_t payload_len_bytes = (cm->cmsg_len - CMSG_LEN (0));
441 size_t payload_len_fds;
447 _DBUS_STATIC_ASSERT (
sizeof (
size_t) >=
sizeof (
int));
449 if ((m.msg_flags & MSG_CTRUNC) && CMSG_NXTHDR(&m, cm) ==
NULL &&
450 (
char *) payload + payload_len_bytes >
451 (
char *) m.msg_control + m.msg_controllen)
462 payload_len_bytes = m.msg_controllen -
463 ((
char *) payload - (
char *) m.msg_control);
466 payload_len_fds = payload_len_bytes /
sizeof (int);
468 if (_DBUS_LIKELY (payload_len_fds <= (
size_t) *n_fds))
471 fds_to_use = payload_len_fds;
479 fds_to_use = (size_t) *n_fds;
484 for (i = fds_to_use; i < payload_len_fds; i++)
490 memcpy (fds, payload, fds_to_use *
sizeof (
int));
494 *n_fds = (int) fds_to_use;
499 for (i = 0; i < fds_to_use; i++)
508 if (m.msg_flags & MSG_CTRUNC)
519 for (i = 0; i < *n_fds; i++)
542 _dbus_write_socket_with_unix_fds(
DBusSocket fd,
549 #ifndef HAVE_UNIX_FD_PASSING 558 return _dbus_write_socket_with_unix_fds_two(fd, buffer, start, len,
NULL, 0, 0, fds, n_fds);
563 _dbus_write_socket_with_unix_fds_two(
DBusSocket fd,
573 #ifndef HAVE_UNIX_FD_PASSING 581 buffer1, start1, len1,
582 buffer2, start2, len2);
595 iov[0].iov_base = (
char*) _dbus_string_get_const_data_len (buffer1, start1, len1);
596 iov[0].iov_len = len1;
600 iov[1].iov_base = (
char*) _dbus_string_get_const_data_len (buffer2, start2, len2);
601 iov[1].iov_len = len2;
606 m.msg_iovlen = buffer2 ? 2 : 1;
610 m.msg_controllen = CMSG_SPACE(n_fds *
sizeof(
int));
611 m.msg_control = alloca(m.msg_controllen);
612 memset(m.msg_control, 0, m.msg_controllen);
614 cm = CMSG_FIRSTHDR(&m);
615 cm->cmsg_level = SOL_SOCKET;
616 cm->cmsg_type = SCM_RIGHTS;
617 cm->cmsg_len = CMSG_LEN(n_fds *
sizeof(
int));
618 memcpy(CMSG_DATA(cm), fds, n_fds *
sizeof(
int));
623 bytes_written = sendmsg (fd.fd, &m, 0
624 #
if HAVE_DECL_MSG_NOSIGNAL
629 if (bytes_written < 0 && errno == EINTR)
633 if (bytes_written > 0)
637 return bytes_written;
663 #if HAVE_DECL_MSG_NOSIGNAL 664 struct iovec vectors[2];
676 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
679 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
687 vectors[0].iov_base = (
char*) data1;
688 vectors[0].iov_len = len1;
689 vectors[1].iov_base = (
char*) data2;
690 vectors[1].iov_len = len2;
694 m.msg_iovlen = data2 ? 2 : 1;
698 bytes_written = sendmsg (fd.fd, &m, MSG_NOSIGNAL);
700 if (bytes_written < 0 && errno == EINTR)
703 return bytes_written;
707 buffer2, start2, len2);
738 start = _dbus_string_get_length (buffer);
750 bytes_read = read (fd, data, count);
796 data = _dbus_string_get_const_data_len (buffer, start, len);
800 bytes_written = write (fd, data, len);
802 if (bytes_written < 0 && errno == EINTR)
806 if (bytes_written > 0)
810 return bytes_written;
850 struct iovec vectors[2];
855 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
858 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
866 vectors[0].iov_base = (
char*) data1;
867 vectors[0].iov_len = len1;
868 vectors[1].iov_base = (
char*) data2;
869 vectors[1].iov_len = len2;
873 bytes_written = writev (fd,
877 if (bytes_written < 0 && errno == EINTR)
880 return bytes_written;
887 if (ret1 == len1 && buffer2 !=
NULL)
901 #define _DBUS_MAX_SUN_PATH_LENGTH 99 939 struct sockaddr_un addr;
940 _DBUS_STATIC_ASSERT (
sizeof (addr.sun_path) > _DBUS_MAX_SUN_PATH_LENGTH);
942 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
944 _dbus_verbose (
"connecting to unix socket %s abstract=%d\n",
948 if (!_dbus_open_unix_socket (&fd, error))
950 _DBUS_ASSERT_ERROR_IS_SET(error);
953 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
956 addr.sun_family = AF_UNIX;
957 path_len = strlen (path);
961 #ifdef HAVE_ABSTRACT_SOCKETS 962 addr.sun_path[0] =
'\0';
965 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
968 "Abstract socket name too long\n");
973 strncpy (&addr.sun_path[1], path, sizeof (addr.sun_path) - 2);
977 "Operating system does not support abstract socket namespace\n");
984 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
987 "Socket name too long\n");
992 strncpy (addr.sun_path, path, sizeof (addr.sun_path) - 1);
995 if (connect (fd, (
struct sockaddr*) &addr, _DBUS_STRUCT_OFFSET (
struct sockaddr_un, sun_path) + path_len) < 0)
999 "Failed to connect to socket %s: %s",
1000 path, _dbus_strerror (errno));
1006 if (!_dbus_set_fd_nonblocking (fd, error))
1008 _DBUS_ASSERT_ERROR_IS_SET (error);
1039 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1041 _dbus_verbose (
"connecting to process %s\n", path);
1044 retval = socketpair (AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0, fds);
1045 cloexec_done = (retval >= 0);
1047 if (retval < 0 && (errno == EINVAL || errno == EPROTOTYPE))
1050 retval = socketpair (AF_UNIX, SOCK_STREAM, 0, fds);
1057 "Failed to create socket pair: %s",
1058 _dbus_strerror (errno));
1073 "Failed to fork() to call %s: %s",
1074 path, _dbus_strerror (errno));
1085 dup2 (fds[1], STDIN_FILENO);
1086 dup2 (fds[1], STDOUT_FILENO);
1088 if (fds[1] != STDIN_FILENO &&
1089 fds[1] != STDOUT_FILENO)
1097 execvp (path, argv);
1099 fprintf (stderr,
"Failed to execute process %s: %s\n", path, _dbus_strerror (errno));
1107 if (!_dbus_set_fd_nonblocking (fds[0], error))
1109 _DBUS_ASSERT_ERROR_IS_SET (error);
1141 struct sockaddr_un addr;
1143 _DBUS_STATIC_ASSERT (
sizeof (addr.sun_path) > _DBUS_MAX_SUN_PATH_LENGTH);
1145 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1147 _dbus_verbose (
"listening on unix socket %s abstract=%d\n",
1150 if (!_dbus_open_unix_socket (&listen_fd, error))
1152 _DBUS_ASSERT_ERROR_IS_SET(error);
1155 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1158 addr.sun_family = AF_UNIX;
1159 path_len = strlen (path);
1163 #ifdef HAVE_ABSTRACT_SOCKETS 1167 addr.sun_path[0] =
'\0';
1170 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
1173 "Abstract socket name too long\n");
1178 strncpy (&addr.sun_path[1], path, sizeof (addr.sun_path) - 2);
1182 "Operating system does not support abstract socket namespace\n");
1202 if (stat (path, &sb) == 0 &&
1203 S_ISSOCK (sb.st_mode))
1207 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
1210 "Socket name too long\n");
1215 strncpy (addr.sun_path, path, sizeof (addr.sun_path) - 1);
1218 if (bind (listen_fd, (
struct sockaddr*) &addr, _DBUS_STRUCT_OFFSET (
struct sockaddr_un, sun_path) + path_len) < 0)
1221 "Failed to bind socket \"%s\": %s",
1222 path, _dbus_strerror (errno));
1227 if (listen (listen_fd, SOMAXCONN ) < 0)
1230 "Failed to listen on socket \"%s\": %s",
1231 path, _dbus_strerror (errno));
1236 if (!_dbus_set_fd_nonblocking (listen_fd, error))
1238 _DBUS_ASSERT_ERROR_IS_SET (error);
1246 if (!
abstract && chmod (path, 0777) < 0)
1247 _dbus_warn (
"Could not set mode 0777 on socket %s\n",
1272 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1274 n = sd_listen_fds (
TRUE);
1278 "Failed to acquire systemd socket: %s",
1279 _dbus_strerror (-n));
1286 "No socket received.");
1290 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1292 r = sd_is_socket (fd, AF_UNSPEC, SOCK_STREAM, 1);
1296 "Failed to verify systemd socket type: %s",
1297 _dbus_strerror (-r));
1304 "Passed socket has wrong type.");
1316 "Failed to allocate file handle array.");
1320 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1322 if (!_dbus_set_fd_nonblocking (fd, error))
1324 _DBUS_ASSERT_ERROR_IS_SET (error);
1328 new_fds[fd - SD_LISTEN_FDS_START].fd = fd;
1336 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1345 "dbus was compiled without systemd support");
1369 return _dbus_connect_tcp_socket_with_nonce (host, port, family, (
const char*)
NULL, error);
1373 _dbus_connect_tcp_socket_with_nonce (
const char *host,
1376 const char *noncefile,
1379 int saved_errno = 0;
1382 struct addrinfo hints;
1383 struct addrinfo *ai, *tmp;
1385 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1390 hints.ai_family = AF_UNSPEC;
1391 else if (!strcmp(family,
"ipv4"))
1392 hints.ai_family = AF_INET;
1393 else if (!strcmp(family,
"ipv6"))
1394 hints.ai_family = AF_INET6;
1399 "Unknown address family %s", family);
1400 return _dbus_socket_get_invalid ();
1402 hints.ai_protocol = IPPROTO_TCP;
1403 hints.ai_socktype = SOCK_STREAM;
1404 hints.ai_flags = AI_ADDRCONFIG;
1406 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0)
1410 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1411 host, port, gai_strerror(res), res);
1412 return _dbus_socket_get_invalid ();
1418 if (!_dbus_open_socket (&fd.fd, tmp->ai_family, SOCK_STREAM, 0, error))
1421 _DBUS_ASSERT_ERROR_IS_SET(error);
1422 return _dbus_socket_get_invalid ();
1424 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1426 if (connect (fd.fd, (
struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) < 0)
1428 saved_errno = errno;
1443 "Failed to connect to socket \"%s:%s\" %s",
1444 host, port, _dbus_strerror(saved_errno));
1445 return _dbus_socket_get_invalid ();
1448 if (noncefile !=
NULL)
1453 ret = _dbus_send_nonce (fd, &noncefileStr, error);
1459 return _dbus_socket_get_invalid ();
1463 if (!_dbus_set_fd_nonblocking (fd.fd, error))
1466 return _dbus_socket_get_invalid ();
1497 int nlisten_fd = 0, res, i;
1499 struct addrinfo hints;
1500 struct addrinfo *ai, *tmp;
1501 unsigned int reuseaddr;
1504 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1509 hints.ai_family = AF_UNSPEC;
1510 else if (!strcmp(family,
"ipv4"))
1511 hints.ai_family = AF_INET;
1512 else if (!strcmp(family,
"ipv6"))
1513 hints.ai_family = AF_INET6;
1518 "Unknown address family %s", family);
1522 hints.ai_protocol = IPPROTO_TCP;
1523 hints.ai_socktype = SOCK_STREAM;
1524 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
1526 redo_lookup_with_port:
1528 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai)
1532 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1533 host ? host :
"*", port, gai_strerror(res), res);
1540 int fd = -1, tcp_nodelay_on;
1543 if (!_dbus_open_socket (&fd, tmp->ai_family, SOCK_STREAM, 0, error))
1545 _DBUS_ASSERT_ERROR_IS_SET(error);
1548 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1551 if (setsockopt (fd, SOL_SOCKET, SO_REUSEADDR, &reuseaddr,
sizeof(reuseaddr))==-1)
1553 _dbus_warn (
"Failed to set socket option \"%s:%s\": %s",
1554 host ? host :
"*", port, _dbus_strerror (errno));
1560 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &tcp_nodelay_on,
sizeof (tcp_nodelay_on)) == -1)
1562 _dbus_warn (
"Failed to set TCP_NODELAY socket option \"%s:%s\": %s",
1563 host ? host :
"*", port, _dbus_strerror (errno));
1566 if (bind (fd, (
struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) < 0)
1568 saved_errno = errno;
1570 if (saved_errno == EADDRINUSE)
1588 "Failed to bind socket \"%s:%s\": %s",
1589 host ? host :
"*", port, _dbus_strerror (saved_errno));
1593 if (listen (fd, 30 ) < 0)
1595 saved_errno = errno;
1598 "Failed to listen on socket \"%s:%s\": %s",
1599 host ? host :
"*", port, _dbus_strerror (saved_errno));
1606 saved_errno = errno;
1609 "Failed to allocate file handle array: %s",
1610 _dbus_strerror (saved_errno));
1613 listen_fd = newlisten_fd;
1614 listen_fd[nlisten_fd].fd = fd;
1617 if (!_dbus_string_get_length(retport))
1623 if (!port || !strcmp(port,
"0"))
1626 struct sockaddr_storage addr;
1630 addrlen =
sizeof(addr);
1631 result = getsockname(fd, (
struct sockaddr*) &addr, &addrlen);
1634 (res = getnameinfo ((
struct sockaddr*)&addr, addrlen,
NULL, 0,
1635 portbuf,
sizeof(portbuf),
1636 NI_NUMERICHOST | NI_NUMERICSERV)) != 0)
1639 "Failed to resolve port \"%s:%s\": %s (%s)",
1640 host ? host :
"*", port, gai_strerror(res), res);
1650 port = _dbus_string_get_const_data(retport);
1652 goto redo_lookup_with_port;
1673 "Failed to bind socket \"%s:%s\": %s",
1674 host ? host :
"*", port, _dbus_strerror (errno));
1678 for (i = 0 ; i < nlisten_fd ; i++)
1680 if (!_dbus_set_fd_nonblocking (listen_fd[i].fd, error))
1693 for (i = 0 ; i < nlisten_fd ; i++)
1700 write_credentials_byte (
int server_fd,
1704 char buf[1] = {
'\0' };
1705 #if defined(HAVE_CMSGCRED) 1708 char cred[CMSG_SPACE (
sizeof (
struct cmsgcred))];
1719 msg.msg_control = (caddr_t) &cmsg;
1720 msg.msg_controllen = CMSG_SPACE (
sizeof (
struct cmsgcred));
1722 cmsg.hdr.cmsg_len = CMSG_LEN (
sizeof (
struct cmsgcred));
1723 cmsg.hdr.cmsg_level = SOL_SOCKET;
1724 cmsg.hdr.cmsg_type = SCM_CREDS;
1727 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1731 #if defined(HAVE_CMSGCRED) 1732 bytes_written = sendmsg (server_fd, &msg, 0
1733 #
if HAVE_DECL_MSG_NOSIGNAL
1741 if (bytes_written < 0 && errno == EINVAL)
1744 bytes_written = send (server_fd, buf, 1, 0
1745 #
if HAVE_DECL_MSG_NOSIGNAL
1751 if (bytes_written < 0 && errno == EINTR)
1754 if (bytes_written < 0)
1757 "Failed to write credentials byte: %s",
1758 _dbus_strerror (errno));
1761 else if (bytes_written == 0)
1764 "wrote zero bytes writing credentials byte");
1770 _dbus_verbose (
"wrote credentials byte\n");
1777 add_linux_security_label_to_credentials (
int client_fd,
1780 #if defined(__linux__) && defined(SO_PEERSEC) 1782 socklen_t len = 1024;
1789 while (getsockopt (client_fd, SOL_SOCKET, SO_PEERSEC,
1790 _dbus_string_get_data (&buf), &len) < 0)
1794 _dbus_verbose (
"getsockopt failed with %s, len now %lu\n",
1795 _dbus_strerror (e), (
unsigned long) len);
1797 if (e != ERANGE || len <= _dbus_string_get_length_uint (&buf))
1799 _dbus_verbose (
"Failed to getsockopt(SO_PEERSEC): %s\n",
1800 _dbus_strerror (e));
1812 _dbus_verbose (
"will try again with %lu\n", (
unsigned long) len);
1817 _dbus_verbose (
"getsockopt(SO_PEERSEC) yielded <= 0 bytes: %lu\n",
1818 (
unsigned long) len);
1822 if (len > _dbus_string_get_length_uint (&buf))
1824 _dbus_verbose (
"%lu > %u", (
unsigned long) len,
1825 _dbus_string_get_length_uint (&buf));
1829 if (_dbus_string_get_byte (&buf, len - 1) == 0)
1833 _dbus_verbose (
"subtracting trailing \\0\n");
1844 if (strlen (_dbus_string_get_const_data (&buf)) != len)
1849 _dbus_verbose (
"security label from kernel had an embedded \\0, " 1854 _dbus_verbose (
"getsockopt(SO_PEERSEC): %lu bytes excluding \\0: %s\n",
1855 (
unsigned long) len,
1856 _dbus_string_get_const_data (&buf));
1859 _dbus_string_get_const_data (&buf)))
1926 #ifdef HAVE_CMSGCRED 1929 char cred[CMSG_SPACE (
sizeof (
struct cmsgcred))];
1937 _DBUS_STATIC_ASSERT (
sizeof (pid_t) <=
sizeof (
dbus_pid_t));
1938 _DBUS_STATIC_ASSERT (
sizeof (uid_t) <=
sizeof (
dbus_uid_t));
1939 _DBUS_STATIC_ASSERT (
sizeof (gid_t) <=
sizeof (
dbus_gid_t));
1944 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1948 iov.iov_base = &buf;
1955 #if defined(HAVE_CMSGCRED) 1957 msg.msg_control = (caddr_t) &cmsg;
1958 msg.msg_controllen = CMSG_SPACE (
sizeof (
struct cmsgcred));
1962 bytes_read = recvmsg (client_fd.fd, &msg, 0);
1975 "Failed to read credentials byte: %s",
1976 _dbus_strerror (errno));
1979 else if (bytes_read == 0)
1985 "Failed to read credentials byte (zero-length read)");
1988 else if (buf !=
'\0')
1991 "Credentials byte was not nul");
1995 _dbus_verbose (
"read credentials byte\n");
2008 struct sockpeercred cr;
2012 int cr_len =
sizeof (cr);
2014 if (getsockopt (client_fd.fd, SOL_SOCKET, SO_PEERCRED, &cr, &cr_len) != 0)
2016 _dbus_verbose (
"Failed to getsockopt(SO_PEERCRED): %s\n",
2017 _dbus_strerror (errno));
2019 else if (cr_len !=
sizeof (cr))
2021 _dbus_verbose (
"Failed to getsockopt(SO_PEERCRED), returned %d bytes, expected %d\n",
2022 cr_len, (
int)
sizeof (cr));
2029 #elif defined(HAVE_UNPCBID) && defined(LOCAL_PEEREID) 2033 socklen_t cr_len =
sizeof (cr);
2035 if (getsockopt (client_fd.fd, 0, LOCAL_PEEREID, &cr, &cr_len) != 0)
2037 _dbus_verbose (
"Failed to getsockopt(LOCAL_PEEREID): %s\n",
2038 _dbus_strerror (errno));
2040 else if (cr_len !=
sizeof (cr))
2042 _dbus_verbose (
"Failed to getsockopt(LOCAL_PEEREID), returned %d bytes, expected %d\n",
2043 cr_len, (
int)
sizeof (cr));
2047 pid_read = cr.unp_pid;
2048 uid_read = cr.unp_euid;
2050 #elif defined(HAVE_CMSGCRED) 2059 struct cmsgcred *cred;
2060 struct cmsghdr *cmsgp;
2062 for (cmsgp = CMSG_FIRSTHDR (&msg);
2064 cmsgp = CMSG_NXTHDR (&msg, cmsgp))
2066 if (cmsgp->cmsg_type == SCM_CREDS &&
2067 cmsgp->cmsg_level == SOL_SOCKET &&
2068 cmsgp->cmsg_len >= CMSG_LEN (
sizeof (
struct cmsgcred)))
2070 cred = (
struct cmsgcred *) CMSG_DATA (cmsgp);
2071 pid_read = cred->cmcred_pid;
2072 uid_read = cred->cmcred_euid;
2077 #elif defined(HAVE_GETPEERUCRED) 2081 ucred_t * ucred =
NULL;
2082 if (getpeerucred (client_fd.fd, &ucred) == 0)
2085 adt_session_data_t *adth =
NULL;
2087 pid_read = ucred_getpid (ucred);
2088 uid_read = ucred_geteuid (ucred);
2091 if (adt_start_session (&adth,
NULL, 0) || (adth ==
NULL))
2093 _dbus_verbose (
"Failed to adt_start_session(): %s\n", _dbus_strerror (errno));
2097 if (adt_set_from_ucred (adth, ucred, ADT_NEW))
2099 _dbus_verbose (
"Failed to adt_set_from_ucred(): %s\n", _dbus_strerror (errno));
2103 adt_export_data_t *data =
NULL;
2104 size_t size = adt_export_session_data (adth, &data);
2107 _dbus_verbose (
"Failed to adt_export_session_data(): %s\n", _dbus_strerror (errno));
2115 (void) adt_end_session (adth);
2121 _dbus_verbose (
"Failed to getpeerucred() credentials: %s\n", _dbus_strerror (errno));
2131 #elif defined(HAVE_GETPEEREID) 2149 if (getpeereid (client_fd.fd, &euid, &egid) == 0)
2155 _dbus_verbose (
"Failed to getpeereid() credentials: %s\n", _dbus_strerror (errno));
2159 #warning Socket credentials not supported on this Unix OS 2160 #warning Please tell https://bugs.freedesktop.org/enter_bug.cgi?product=DBus 2166 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \ 2167 defined(__linux__) || \ 2168 defined(__OpenBSD__) || \ 2170 # error Credentials passing not working on this OS is a regression! 2173 _dbus_verbose (
"Socket credentials not supported on this OS\n");
2177 _dbus_verbose (
"Credentials:" 2188 _DBUS_SET_OOM (error);
2197 _DBUS_SET_OOM (error);
2202 if (!add_linux_security_label_to_credentials (client_fd.fd, credentials))
2204 _DBUS_SET_OOM (error);
2232 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2234 if (write_credentials_byte (server_fd.fd, error))
2253 struct sockaddr addr;
2259 addrlen =
sizeof (addr);
2269 client_fd.fd = accept4 (listen_fd.fd, &addr, &addrlen, SOCK_CLOEXEC);
2270 cloexec_done = client_fd.fd >= 0;
2272 if (client_fd.fd < 0 && (errno == ENOSYS || errno == EINVAL))
2275 client_fd.fd = accept (listen_fd.fd, &addr, &addrlen);
2278 if (client_fd.fd < 0)
2284 _dbus_verbose (
"client fd %d accepted\n", client_fd.fd);
2307 const char *directory;
2310 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2312 directory = _dbus_string_get_const_data (dir);
2314 if (stat (directory, &sb) < 0)
2317 "%s", _dbus_strerror (errno));
2322 if (sb.st_uid != geteuid ())
2325 "%s directory is owned by user %lu, not %lu",
2327 (
unsigned long) sb.st_uid,
2328 (
unsigned long) geteuid ());
2332 if ((S_IROTH & sb.st_mode) || (S_IWOTH & sb.st_mode) ||
2333 (S_IRGRP & sb.st_mode) || (S_IWGRP & sb.st_mode))
2336 "%s directory is not private to the user", directory);
2344 fill_user_info_from_passwd (
struct passwd *p,
2351 info->
uid = p->pw_uid;
2372 const char *username_c;
2385 if (username !=
NULL)
2386 username_c = _dbus_string_get_const_data (username);
2395 #if defined (HAVE_POSIX_GETPWNAM_R) || defined (HAVE_NONPOSIX_GETPWNAM_R) 2401 struct passwd p_str;
2404 buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
2410 if ((
long) buflen <= 0)
2424 #ifdef HAVE_POSIX_GETPWNAM_R 2426 result = getpwuid_r (uid, &p_str, buf, buflen,
2429 result = getpwnam_r (username_c, &p_str, buf, buflen,
2433 p = getpwuid_r (uid, &p_str, buf, buflen);
2435 p = getpwnam_r (username_c, &p_str, buf, buflen);
2439 if (result == ERANGE && buflen < 512 * 1024)
2449 if (result == 0 && p == &p_str)
2451 if (!fill_user_info_from_passwd (p, info, error))
2461 "User \"%s\" unknown or no memory to allocate password entry\n",
2462 username_c ? username_c :
"???");
2463 _dbus_verbose (
"User %s unknown\n", username_c ? username_c :
"???");
2476 p = getpwnam (username_c);
2480 if (!fill_user_info_from_passwd (p, info, error))
2488 "User \"%s\" unknown or no memory to allocate password entry\n",
2489 username_c ? username_c :
"???");
2490 _dbus_verbose (
"User %s unknown\n", username_c ? username_c :
"???");
2499 #ifdef HAVE_GETGROUPLIST 2504 int initial_buf_count;
2506 initial_buf_count = 17;
2507 buf_count = initial_buf_count;
2515 if (getgrouplist (username_c,
2517 buf, &buf_count) < 0)
2533 if (buf_count == initial_buf_count)
2548 if (getgrouplist (username_c, info->
primary_gid, buf, &buf_count) < 0)
2552 _dbus_warn (
"It appears that username \"%s\" is in more than %d groups.\nProceeding with just the first %d groups.",
2553 username_c, buf_count, buf_count);
2559 "Failed to get groups for username \"%s\" primary GID " 2562 _dbus_strerror (errno));
2577 for (i = 0; i < buf_count; ++i)
2600 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2605 _DBUS_ASSERT_ERROR_IS_SET (error);
2639 return fill_user_info (info, uid,
2657 _DBUS_STATIC_ASSERT (
sizeof (pid_t) <=
sizeof (
dbus_pid_t));
2658 _DBUS_STATIC_ASSERT (
sizeof (uid_t) <=
sizeof (
dbus_uid_t));
2659 _DBUS_STATIC_ASSERT (
sizeof (gid_t) <=
sizeof (
dbus_gid_t));
2741 if (_dbus_string_get_length (uid_str) == 0)
2743 _dbus_verbose (
"UID string was zero length\n");
2752 _dbus_verbose (
"could not parse string as a UID\n");
2756 if (end != _dbus_string_get_length (uid_str))
2758 _dbus_verbose (
"string contained trailing stuff after UID\n");
2773 static pthread_mutex_t atomic_mutex = PTHREAD_MUTEX_INITIALIZER;
2786 return __sync_add_and_fetch(&atomic->
value, 1)-1;
2790 pthread_mutex_lock (&atomic_mutex);
2791 res = atomic->
value;
2793 pthread_mutex_unlock (&atomic_mutex);
2809 return __sync_sub_and_fetch(&atomic->
value, 1)+1;
2813 pthread_mutex_lock (&atomic_mutex);
2814 res = atomic->
value;
2816 pthread_mutex_unlock (&atomic_mutex);
2833 __sync_synchronize ();
2834 return atomic->
value;
2838 pthread_mutex_lock (&atomic_mutex);
2839 res = atomic->
value;
2840 pthread_mutex_unlock (&atomic_mutex);
2857 int timeout_milliseconds)
2859 #if defined(HAVE_POLL) && !defined(BROKEN_POLL) 2861 if (timeout_milliseconds < -1)
2863 timeout_milliseconds = -1;
2868 timeout_milliseconds);
2871 fd_set read_set, write_set, err_set;
2877 FD_ZERO (&read_set);
2878 FD_ZERO (&write_set);
2881 for (i = 0; i < n_fds; i++)
2886 FD_SET (fdp->
fd, &read_set);
2889 FD_SET (fdp->
fd, &write_set);
2891 FD_SET (fdp->
fd, &err_set);
2893 max_fd = MAX (max_fd, fdp->
fd);
2896 tv.tv_sec = timeout_milliseconds / 1000;
2897 tv.tv_usec = (timeout_milliseconds % 1000) * 1000;
2899 ready = select (max_fd + 1, &read_set, &write_set, &err_set,
2900 timeout_milliseconds < 0 ?
NULL : &tv);
2904 for (i = 0; i < n_fds; i++)
2910 if (FD_ISSET (fdp->
fd, &read_set))
2913 if (FD_ISSET (fdp->
fd, &write_set))
2916 if (FD_ISSET (fdp->
fd, &err_set))
2936 #ifdef HAVE_MONOTONIC_CLOCK 2938 clock_gettime (CLOCK_MONOTONIC, &ts);
2941 *tv_sec = ts.tv_sec;
2943 *tv_usec = ts.tv_nsec / 1000;
2947 gettimeofday (&t,
NULL);
2952 *tv_usec = t.tv_usec;
2969 gettimeofday (&t,
NULL);
2974 *tv_usec = t.tv_usec;
2989 const char *filename_c;
2991 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2993 filename_c = _dbus_string_get_const_data (filename);
2995 if (mkdir (filename_c, 0700) < 0)
2997 if (errno == EEXIST)
3001 "Failed to create directory %s: %s\n",
3002 filename_c, _dbus_strerror (errno));
3021 const char *filename_c;
3023 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3025 filename_c = _dbus_string_get_const_data (filename);
3027 if (mkdir (filename_c, 0700) < 0)
3030 "Failed to create directory %s: %s\n",
3031 filename_c, _dbus_strerror (errno));
3055 if (_dbus_string_get_length (dir) == 0 ||
3056 _dbus_string_get_length (next_component) == 0)
3059 dir_ends_in_slash =
'/' == _dbus_string_get_byte (dir,
3060 _dbus_string_get_length (dir) - 1);
3062 file_starts_with_slash =
'/' == _dbus_string_get_byte (next_component, 0);
3064 if (dir_ends_in_slash && file_starts_with_slash)
3068 else if (!(dir_ends_in_slash || file_starts_with_slash))
3075 _dbus_string_get_length (dir));
3079 #define NANOSECONDS_PER_SECOND 1000000000 3081 #define MICROSECONDS_PER_SECOND 1000000 3083 #define MILLISECONDS_PER_SECOND 1000 3085 #define NANOSECONDS_PER_MILLISECOND 1000000 3087 #define MICROSECONDS_PER_MILLISECOND 1000 3096 #ifdef HAVE_NANOSLEEP 3097 struct timespec req;
3098 struct timespec rem;
3100 req.tv_sec = milliseconds / MILLISECONDS_PER_SECOND;
3101 req.tv_nsec = (milliseconds % MILLISECONDS_PER_SECOND) * NANOSECONDS_PER_MILLISECOND;
3105 while (nanosleep (&req, &rem) < 0 && errno == EINTR)
3107 #elif defined (HAVE_USLEEP) 3108 usleep (milliseconds * MICROSECONDS_PER_MILLISECOND);
3110 sleep (MAX (milliseconds / 1000, 1));
3132 old_len = _dbus_string_get_length (str);
3136 fd = open (
"/dev/urandom", O_RDONLY);
3141 "Could not open /dev/urandom: %s",
3142 _dbus_strerror (errno));
3146 _dbus_verbose (
"/dev/urandom fd %d opened\n", fd);
3150 if (result != n_bytes)
3154 "Could not read /dev/urandom: %s",
3155 _dbus_strerror (errno));
3158 "Short read from /dev/urandom");
3165 _dbus_verbose (
"Read %d bytes from /dev/urandom\n",
3193 _dbus_strerror (
int error_number)
3197 msg = strerror (error_number);
3210 signal (SIGPIPE, SIG_IGN);
3225 val = fcntl (fd, F_GETFD, 0);
3232 fcntl (fd, F_SETFD, val);
3246 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3255 "Could not close fd %d", fd);
3276 #ifdef F_DUPFD_CLOEXEC 3279 new_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
3280 cloexec_done = new_fd >= 0;
3282 if (new_fd < 0 && errno == EINVAL)
3285 new_fd = fcntl(fd, F_DUPFD, 3);
3291 "Could not duplicate fd %d", fd);
3295 #ifdef F_DUPFD_CLOEXEC 3316 return _dbus_set_fd_nonblocking (fd.fd, error);
3320 _dbus_set_fd_nonblocking (
int fd,
3325 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3327 val = fcntl (fd, F_GETFL, 0);
3331 "Failed to get flags from file descriptor %d: %s",
3332 fd, _dbus_strerror (errno));
3333 _dbus_verbose (
"Failed to get flags for fd %d: %s\n", fd,
3334 _dbus_strerror (errno));
3338 if (fcntl (fd, F_SETFL, val | O_NONBLOCK) < 0)
3341 "Failed to set nonblocking flag of file descriptor %d: %s",
3342 fd, _dbus_strerror (errno));
3343 _dbus_verbose (
"Failed to set fd %d nonblocking: %s\n",
3344 fd, _dbus_strerror (errno));
3360 #if defined (HAVE_BACKTRACE) && defined (DBUS_BUILT_R_DYNAMIC) 3366 bt_size = backtrace (bt, 500);
3368 syms = backtrace_symbols (bt, bt_size);
3374 fprintf (stderr,
" %s\n", syms[i]);
3380 #elif defined (HAVE_BACKTRACE) && ! defined (DBUS_BUILT_R_DYNAMIC) 3381 fprintf (stderr,
" D-Bus not built with -rdynamic so unable to print a backtrace\n");
3383 fprintf (stderr,
" D-Bus not compiled with backtrace support so unable to print a backtrace\n");
3405 #ifdef HAVE_SOCKETPAIR 3412 retval = socketpair(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0, fds);
3413 cloexec_done = retval >= 0;
3415 if (retval < 0 && (errno == EINVAL || errno == EPROTOTYPE))
3418 retval = socketpair(AF_UNIX, SOCK_STREAM, 0, fds);
3424 "Could not create full-duplex pipe");
3428 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3439 (!_dbus_set_fd_nonblocking (fds[0],
NULL) ||
3440 !_dbus_set_fd_nonblocking (fds[1],
NULL)))
3443 "Could not set full-duplex pipe nonblocking");
3454 _dbus_verbose (
"full-duplex pipe %d <-> %d\n",
3459 _dbus_warn (
"_dbus_socketpair() not implemented on this OS\n");
3461 "_dbus_socketpair() not implemented on this OS");
3478 char static_buf[1024];
3479 int bufsize =
sizeof (static_buf);
3483 DBUS_VA_COPY (args_copy, args);
3484 len = vsnprintf (static_buf, bufsize, format, args_copy);
3501 DBUS_VA_COPY (args_copy, args);
3503 if (vsnprintf (static_buf, 1, format, args_copy) == 1)
3522 DBUS_VA_COPY (args_copy, args);
3523 len = vsnprintf (buf, bufsize, format, args_copy);
3548 static const char* tmpdir =
NULL;
3560 tmpdir = getenv(
"TMPDIR");
3566 tmpdir = getenv(
"TMP");
3568 tmpdir = getenv(
"TEMP");
3582 #if defined(DBUS_ENABLE_X11_AUTOLAUNCH) || defined(DBUS_ENABLE_LAUNCHD) 3603 _read_subprocess_line_argv (
const char *progpath,
3609 int result_pipe[2] = { -1, -1 };
3610 int errors_pipe[2] = { -1, -1 };
3617 sigset_t new_set, old_set;
3619 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3626 sigemptyset (&new_set);
3627 sigaddset (&new_set, SIGCHLD);
3628 sigprocmask (SIG_BLOCK, &new_set, &old_set);
3630 orig_len = _dbus_string_get_length (result);
3634 if (pipe (result_pipe) < 0)
3637 "Failed to create a pipe to call %s: %s",
3638 progpath, _dbus_strerror (errno));
3639 _dbus_verbose (
"Failed to create a pipe to call %s: %s\n",
3640 progpath, _dbus_strerror (errno));
3643 if (pipe (errors_pipe) < 0)
3646 "Failed to create a pipe to call %s: %s",
3647 progpath, _dbus_strerror (errno));
3648 _dbus_verbose (
"Failed to create a pipe to call %s: %s\n",
3649 progpath, _dbus_strerror (errno));
3657 "Failed to fork() to call %s: %s",
3658 progpath, _dbus_strerror (errno));
3659 _dbus_verbose (
"Failed to fork() to call %s: %s\n",
3660 progpath, _dbus_strerror (errno));
3669 fd = open (
"/dev/null", O_RDWR);
3674 _dbus_verbose (
"/dev/null fd %d opened\n", fd);
3678 close (errors_pipe[READ_END]);
3680 if (dup2 (fd, 0) == -1)
3682 if (dup2 (result_pipe[
WRITE_END], 1) == -1)
3684 if (dup2 (errors_pipe[WRITE_END], 2) == -1)
3689 sigprocmask (SIG_SETMASK, &old_set,
NULL);
3692 if (progpath[0] ==
'/')
3694 execv (progpath, argv);
3703 execvp (strrchr (progpath,
'/')+1, argv);
3706 execvp (progpath, argv);
3714 close (errors_pipe[WRITE_END]);
3728 ret = waitpid (pid, &status, 0);
3730 while (ret == -1 && errno == EINTR);
3734 if (!WIFEXITED (status) || WEXITSTATUS (status) != 0 )
3740 _DBUS_SET_OOM (error);
3752 if (_dbus_string_get_length (&error_message) > 0)
3754 "%s terminated abnormally with the following error: %s",
3755 progpath, _dbus_string_get_data (&error_message));
3758 "%s terminated abnormally without any error message",
3766 sigprocmask (SIG_SETMASK, &old_set,
NULL);
3769 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3771 _DBUS_ASSERT_ERROR_IS_SET (error);
3773 if (result_pipe[0] != -1)
3774 close (result_pipe[0]);
3775 if (result_pipe[1] != -1)
3776 close (result_pipe[1]);
3777 if (errors_pipe[0] != -1)
3778 close (errors_pipe[0]);
3779 if (errors_pipe[1] != -1)
3780 close (errors_pipe[1]);
3803 #ifdef DBUS_ENABLE_X11_AUTOLAUNCH 3807 const char *display;
3808 const char *progpath;
3817 "Unable to autolaunch when setuid");
3821 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3834 if (display ==
NULL || display[0] ==
'\0')
3837 "Unable to autolaunch a dbus-daemon without a $DISPLAY for X11");
3843 _DBUS_SET_OOM (error);
3852 #ifdef DBUS_ENABLE_EMBEDDED_TESTS 3855 if (progpath ==
NULL)
3857 progpath = DBUS_BINDIR
"/dbus-launch";
3864 argv[i] =
"dbus-launch";
3866 argv[i] =
"--autolaunch";
3868 argv[i] = _dbus_string_get_data (&uuid);
3870 argv[i] =
"--binary-syntax";
3872 argv[i] =
"--close-stderr";
3879 retval = _read_subprocess_line_argv (progpath,
3881 argv, address, error);
3888 "Using X11 for dbus-daemon autolaunch was disabled at compile time, " 3889 "set your DBUS_SESSION_BUS_ADDRESS instead");
3942 if (!create_if_not_found)
3964 const char *launchd_env_var,
3967 #ifdef DBUS_ENABLE_LAUNCHD 3971 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3976 "Unable to find launchd socket when setuid");
3981 argv[i] =
"launchctl";
3985 argv[i] = (
char*)launchd_env_var;
3992 if (!_read_subprocess_line_argv(argv[0],
TRUE, argv, socket_path, error))
3998 if (_dbus_string_get_length(socket_path) == 0)
4008 "can't lookup socket from launchd; launchd support not compiled in");
4013 #ifdef DBUS_ENABLE_LAUNCHD 4023 "Unable to find launchd socket when setuid");
4029 _DBUS_SET_OOM (error);
4044 "launchd did not provide a socket path, " 4045 "verify that org.freedesktop.dbus-session.plist is loaded!");
4051 _DBUS_SET_OOM (error);
4056 _dbus_string_get_length (address)))
4058 _DBUS_SET_OOM (error);
4073 const char *runtime_dir =
_dbus_getenv (
"XDG_RUNTIME_DIR");
4078 if (runtime_dir ==
NULL)
4080 _dbus_verbose (
"XDG_RUNTIME_DIR not found in environment");
4087 _DBUS_SET_OOM (error);
4093 _DBUS_SET_OOM (error);
4097 if (lstat (_dbus_string_get_const_data (&user_bus_path), &stbuf) == -1)
4099 _dbus_verbose (
"XDG_RUNTIME_DIR/bus not available: %s",
4100 _dbus_strerror (errno));
4106 if (stbuf.st_uid != getuid ())
4108 _dbus_verbose (
"XDG_RUNTIME_DIR/bus owned by uid %ld, not our uid %ld",
4109 (
long) stbuf.st_uid, (
long) getuid ());
4115 if ((stbuf.st_mode & S_IFMT) != S_IFSOCK)
4117 _dbus_verbose (
"XDG_RUNTIME_DIR/bus is not a socket: st_mode = 0o%lo",
4118 (
long) stbuf.st_mode);
4127 _DBUS_SET_OOM (error);
4163 #ifdef DBUS_ENABLE_LAUNCHD 4165 return _dbus_lookup_session_address_launchd (address, error);
4169 if (!_dbus_lookup_user_bus (supported, address, error))
4171 else if (*supported)
4229 #ifdef DBUS_ENABLE_EMBEDDED_TESTS 4231 const char *
override;
4234 if (
override !=
NULL && *
override !=
'\0')
4240 _dbus_verbose (
"Using fake homedir for testing: %s\n",
4241 _dbus_string_get_const_data (&homedir));
4248 if (!already_warned)
4250 _dbus_warn (
"Using your real home directory for testing, set DBUS_TEST_HOMEDIR to avoid\n");
4251 already_warned =
TRUE;
4263 directory, _dbus_string_get_length (directory))) {
4277 _dbus_daemon_publish_session_bus_address (
const char* addr,
4285 _dbus_daemon_unpublish_session_bus_address (
void)
4299 return e == EAGAIN || e == EWOULDBLOCK;
4313 const char *filename_c;
4315 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
4317 filename_c = _dbus_string_get_const_data (filename);
4319 if (rmdir (filename_c) != 0)
4322 "Failed to remove directory %s: %s\n",
4323 filename_c, _dbus_strerror (errno));
4343 struct sockaddr_storage storage;
4344 struct sockaddr_un un;
4347 socklen_t sa_len =
sizeof(sa_buf);
4351 if (getsockname(fd.fd, &sa_buf.sa, &sa_len) < 0)
4354 return sa_buf.sa.sa_family == AF_UNIX;
4377 d = opendir (
"/proc/self/fd");
4382 struct dirent buf, *de;
4387 k = readdir_r (d, &buf, &de);
4391 if (de->d_name[0] ==
'.')
4395 l = strtol (de->d_name, &e, 10);
4396 if (errno != 0 || e ==
NULL || *e !=
'\0')
4403 if (fd == dirfd (d))
4414 maxfds = sysconf (_SC_OPEN_MAX);
4423 for (i = 3; i < maxfds; i++)
4442 #if 0 && defined(HAVE_LIBC_ENABLE_SECURE) 4445 extern int __libc_enable_secure;
4446 return __libc_enable_secure;
4448 #elif defined(HAVE_ISSETUGID) 4450 return issetugid ();
4452 uid_t ruid, euid, suid;
4453 gid_t rgid, egid, sgid;
4460 if (_DBUS_UNLIKELY (!check_setuid_initialised))
4462 #ifdef HAVE_GETRESUID 4463 if (getresuid (&ruid, &euid, &suid) != 0 ||
4464 getresgid (&rgid, &egid, &sgid) != 0)
4467 suid = ruid = getuid ();
4468 sgid = rgid = getgid ();
4473 check_setuid_initialised =
TRUE;
4474 is_setuid = (ruid != euid || ruid != suid ||
4475 rgid != egid || rgid != sgid);
4496 struct sockaddr_storage storage;
4497 struct sockaddr_un un;
4498 struct sockaddr_in ipv4;
4499 struct sockaddr_in6 ipv6;
4501 char hostip[INET6_ADDRSTRLEN];
4502 int size =
sizeof (socket);
4505 if (getsockname (fd.fd, &socket.sa, &size))
4508 switch (socket.sa.sa_family)
4511 if (socket.un.sun_path[0]==
'\0')
4527 if (inet_ntop (AF_INET, &socket.ipv4.sin_addr, hostip, sizeof (hostip)))
4529 hostip, ntohs (socket.ipv4.sin_port)))
4535 if (inet_ntop (AF_INET6, &socket.ipv6.sin6_addr, hostip, sizeof (hostip)))
4537 ntohs (socket.ipv6.sin6_port)) &&
4545 "Failed to read address from socket: Unknown socket type.");
4551 "Failed to open socket: %s",
4552 _dbus_strerror (errno));
4557 _dbus_save_socket_errno (
void)
4563 _dbus_restore_socket_errno (
int saved_errno)
4565 errno = saved_errno;
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.
#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.
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.
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.
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.
int _dbus_read_socket_with_unix_fds(DBusSocket fd, DBusString *buffer, int count, int *fds, int *n_fds)
Like _dbus_read_socket() but also tries to read unix fds from the socket.
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.
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().
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.
#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.
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.
#define FALSE
Expands to "0".
dbus_bool_t _dbus_read_local_machine_uuid(DBusGUID *machine_id, dbus_bool_t create_if_not_found, DBusError *error)
Reads the uuid of the machine we're running on from the dbus configuration.
dbus_bool_t _dbus_write_uuid_file(const DBusString *filename, const DBusGUID *uuid, DBusError *error)
Write the give UUID to a file.
void _dbus_print_backtrace(void)
On GNU libc systems, print a crude backtrace to stderr.
void dbus_set_error_const(DBusError *error, const char *name, const char *message)
Assigns an error name and message to a DBusError.
dbus_bool_t _dbus_string_set_length(DBusString *str, int length)
Sets the length of a string.
#define _DBUS_LOCK(name)
Locks a global lock, initializing it first if necessary.
int _dbus_write_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...
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.