27 #include "dbus-internals.h"
28 #include "dbus-sysdeps.h"
29 #include "dbus-sysdeps-unix.h"
30 #include "dbus-threads.h"
31 #include "dbus-protocol.h"
32 #include "dbus-transport.h"
33 #include "dbus-string.h"
34 #include "dbus-userdb.h"
35 #include "dbus-list.h"
36 #include "dbus-credentials.h"
37 #include "dbus-nonce.h"
39 #include <sys/types.h>
46 #include <sys/socket.h>
55 #include <netinet/in.h>
71 #ifdef HAVE_GETPEERUCRED
82 #include "sd-daemon.h"
89 #define AI_ADDRCONFIG 0
92 #ifndef HAVE_SOCKLEN_T
96 #if defined (__sun) || defined (__sun__)
109 # define CMSG_ALIGN(len) _CMSG_DATA_ALIGN (len)
112 # define CMSG_ALIGN(len) (((len) + sizeof (long) - 1) & \
113 ~(sizeof (long) - 1))
118 # define CMSG_SPACE(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + \
123 # define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
129 _dbus_open_socket (
int *fd_p,
138 *fd_p = socket (domain, type | SOCK_CLOEXEC, protocol);
139 cloexec_done = *fd_p >= 0;
142 if (*fd_p < 0 && (errno == EINVAL || errno == EPROTOTYPE))
145 *fd_p = socket (domain, type, protocol);
157 _dbus_verbose (
"socket fd %d opened\n", *fd_p);
164 "Failed to open socket: %s",
165 _dbus_strerror (errno));
181 _dbus_open_unix_socket (
int *fd,
184 return _dbus_open_socket(fd, PF_UNIX, SOCK_STREAM, 0, error);
235 #if HAVE_DECL_MSG_NOSIGNAL
239 data = _dbus_string_get_const_data_len (buffer, start, len);
243 bytes_written = send (fd, data, len, MSG_NOSIGNAL);
245 if (bytes_written < 0 && errno == EINTR)
248 return bytes_written;
273 #ifndef HAVE_UNIX_FD_PASSING
291 start = _dbus_string_get_length (buffer);
311 m.msg_controllen = CMSG_SPACE(*n_fds *
sizeof(
int));
315 m.msg_control = alloca(m.msg_controllen);
316 memset(m.msg_control, 0, m.msg_controllen);
320 bytes_read = recvmsg(fd, &m, 0
321 #ifdef MSG_CMSG_CLOEXEC
342 if (m.msg_flags & MSG_CTRUNC)
354 for (cm = CMSG_FIRSTHDR(&m); cm; cm = CMSG_NXTHDR(&m, cm))
355 if (cm->cmsg_level == SOL_SOCKET && cm->cmsg_type == SCM_RIGHTS)
359 _dbus_assert(cm->cmsg_len <= CMSG_LEN(*n_fds *
sizeof(
int)));
360 *n_fds = (cm->cmsg_len - CMSG_LEN(0)) /
sizeof(
int);
362 memcpy(fds, CMSG_DATA(cm), *n_fds *
sizeof(
int));
368 for (i = 0; i < *n_fds; i++)
391 _dbus_write_socket_with_unix_fds(
int fd,
398 #ifndef HAVE_UNIX_FD_PASSING
407 return _dbus_write_socket_with_unix_fds_two(fd, buffer, start, len,
NULL, 0, 0, fds, n_fds);
412 _dbus_write_socket_with_unix_fds_two(
int fd,
422 #ifndef HAVE_UNIX_FD_PASSING
430 buffer1, start1, len1,
431 buffer2, start2, len2);
444 iov[0].iov_base = (
char*) _dbus_string_get_const_data_len (buffer1, start1, len1);
445 iov[0].iov_len = len1;
449 iov[1].iov_base = (
char*) _dbus_string_get_const_data_len (buffer2, start2, len2);
450 iov[1].iov_len = len2;
455 m.msg_iovlen = buffer2 ? 2 : 1;
459 m.msg_controllen = CMSG_SPACE(n_fds *
sizeof(
int));
460 m.msg_control = alloca(m.msg_controllen);
461 memset(m.msg_control, 0, m.msg_controllen);
463 cm = CMSG_FIRSTHDR(&m);
464 cm->cmsg_level = SOL_SOCKET;
465 cm->cmsg_type = SCM_RIGHTS;
466 cm->cmsg_len = CMSG_LEN(n_fds *
sizeof(
int));
467 memcpy(CMSG_DATA(cm), fds, n_fds *
sizeof(
int));
472 bytes_written = sendmsg (fd, &m, 0
473 #
if HAVE_DECL_MSG_NOSIGNAL
478 if (bytes_written < 0 && errno == EINTR)
482 if (bytes_written > 0)
486 return bytes_written;
512 #if HAVE_DECL_MSG_NOSIGNAL
513 struct iovec vectors[2];
525 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
528 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
536 vectors[0].iov_base = (
char*) data1;
537 vectors[0].iov_len = len1;
538 vectors[1].iov_base = (
char*) data2;
539 vectors[1].iov_len = len2;
543 m.msg_iovlen = data2 ? 2 : 1;
547 bytes_written = sendmsg (fd, &m, MSG_NOSIGNAL);
549 if (bytes_written < 0 && errno == EINTR)
552 return bytes_written;
556 buffer2, start2, len2);
561 _dbus_socket_is_invalid (
int fd)
593 start = _dbus_string_get_length (buffer);
605 bytes_read = read (fd, data, count);
651 data = _dbus_string_get_const_data_len (buffer, start, len);
655 bytes_written = write (fd, data, len);
657 if (bytes_written < 0 && errno == EINTR)
661 if (bytes_written > 0)
665 return bytes_written;
705 struct iovec vectors[2];
710 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
713 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
721 vectors[0].iov_base = (
char*) data1;
722 vectors[0].iov_len = len1;
723 vectors[1].iov_base = (
char*) data2;
724 vectors[1].iov_len = len2;
728 bytes_written = writev (fd,
732 if (bytes_written < 0 && errno == EINTR)
735 return bytes_written;
742 if (ret1 == len1 && buffer2 !=
NULL)
756 #define _DBUS_MAX_SUN_PATH_LENGTH 99
794 struct sockaddr_un addr;
796 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
798 _dbus_verbose (
"connecting to unix socket %s abstract=%d\n",
802 if (!_dbus_open_unix_socket (&fd, error))
804 _DBUS_ASSERT_ERROR_IS_SET(error);
807 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
810 addr.sun_family = AF_UNIX;
811 path_len = strlen (path);
815 #ifdef HAVE_ABSTRACT_SOCKETS
816 addr.sun_path[0] =
'\0';
819 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
822 "Abstract socket name too long\n");
827 strncpy (&addr.sun_path[1], path, path_len);
831 "Operating system does not support abstract socket namespace\n");
838 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
841 "Socket name too long\n");
846 strncpy (addr.sun_path, path, path_len);
849 if (connect (fd, (
struct sockaddr*) &addr, _DBUS_STRUCT_OFFSET (
struct sockaddr_un, sun_path) + path_len) < 0)
853 "Failed to connect to socket %s: %s",
854 path, _dbus_strerror (errno));
860 if (!_dbus_set_fd_nonblocking (fd, error))
862 _DBUS_ASSERT_ERROR_IS_SET (error);
893 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
895 _dbus_verbose (
"connecting to process %s\n", path);
898 retval = socketpair (AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0, fds);
899 cloexec_done = (retval >= 0);
901 if (retval < 0 && (errno == EINVAL || errno == EPROTOTYPE))
904 retval = socketpair (AF_UNIX, SOCK_STREAM, 0, fds);
911 "Failed to create socket pair: %s",
912 _dbus_strerror (errno));
927 "Failed to fork() to call %s: %s",
928 path, _dbus_strerror (errno));
939 dup2 (fds[1], STDIN_FILENO);
940 dup2 (fds[1], STDOUT_FILENO);
942 if (fds[1] != STDIN_FILENO &&
943 fds[1] != STDOUT_FILENO)
953 fprintf (stderr,
"Failed to execute process %s: %s\n", path, _dbus_strerror (errno));
961 if (!_dbus_set_fd_nonblocking (fds[0], error))
963 _DBUS_ASSERT_ERROR_IS_SET (error);
986 #if defined(HAVE_CMSGCRED)
990 #elif defined(LOCAL_CREDS)
991 int val = on ? 1 : 0;
992 if (setsockopt (fd, 0, LOCAL_CREDS, &val,
sizeof (val)) < 0)
994 _dbus_verbose (
"Unable to set LOCAL_CREDS socket option on fd %d\n", fd);
998 _dbus_verbose (
"LOCAL_CREDS %s for further messages on fd %d\n",
999 on ?
"enabled" :
"disabled", fd);
1028 struct sockaddr_un addr;
1030 unsigned int reuseaddr;
1032 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1034 _dbus_verbose (
"listening on unix socket %s abstract=%d\n",
1037 if (!_dbus_open_unix_socket (&listen_fd, error))
1039 _DBUS_ASSERT_ERROR_IS_SET(error);
1042 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1045 addr.sun_family = AF_UNIX;
1046 path_len = strlen (path);
1050 #ifdef HAVE_ABSTRACT_SOCKETS
1054 addr.sun_path[0] =
'\0';
1057 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
1060 "Abstract socket name too long\n");
1065 strncpy (&addr.sun_path[1], path, path_len);
1069 "Operating system does not support abstract socket namespace\n");
1089 if (stat (path, &sb) == 0 &&
1090 S_ISSOCK (sb.st_mode))
1094 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
1097 "Abstract socket name too long\n");
1102 strncpy (addr.sun_path, path, path_len);
1106 if (setsockopt (listen_fd, SOL_SOCKET, SO_REUSEADDR, &reuseaddr,
sizeof(reuseaddr))==-1)
1108 _dbus_warn (
"Failed to set socket option\"%s\": %s",
1109 path, _dbus_strerror (errno));
1112 if (bind (listen_fd, (
struct sockaddr*) &addr, _DBUS_STRUCT_OFFSET (
struct sockaddr_un, sun_path) + path_len) < 0)
1115 "Failed to bind socket \"%s\": %s",
1116 path, _dbus_strerror (errno));
1121 if (listen (listen_fd, 30 ) < 0)
1124 "Failed to listen on socket \"%s\": %s",
1125 path, _dbus_strerror (errno));
1130 if (!_dbus_set_local_creds (listen_fd,
TRUE))
1133 "Failed to enable LOCAL_CREDS on socket \"%s\": %s",
1134 path, _dbus_strerror (errno));
1139 if (!_dbus_set_fd_nonblocking (listen_fd, error))
1141 _DBUS_ASSERT_ERROR_IS_SET (error);
1149 if (!
abstract && chmod (path, 0777) < 0)
1150 _dbus_warn (
"Could not set mode 0777 on socket %s\n",
1174 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1176 n = sd_listen_fds (
TRUE);
1180 "Failed to acquire systemd socket: %s",
1181 _dbus_strerror (-n));
1188 "No socket received.");
1192 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1194 r = sd_is_socket (fd, AF_UNSPEC, SOCK_STREAM, 1);
1198 "Failed to verify systemd socket type: %s",
1199 _dbus_strerror (-r));
1206 "Passed socket has wrong type.");
1218 "Failed to allocate file handle array.");
1222 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1224 if (!_dbus_set_local_creds (fd,
TRUE))
1227 "Failed to enable LOCAL_CREDS on systemd socket: %s",
1228 _dbus_strerror (errno));
1232 if (!_dbus_set_fd_nonblocking (fd, error))
1234 _DBUS_ASSERT_ERROR_IS_SET (error);
1238 new_fds[fd - SD_LISTEN_FDS_START] = fd;
1246 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1274 return _dbus_connect_tcp_socket_with_nonce (host, port, family, (
const char*)
NULL, error);
1278 _dbus_connect_tcp_socket_with_nonce (
const char *host,
1281 const char *noncefile,
1284 int saved_errno = 0;
1286 struct addrinfo hints;
1287 struct addrinfo *ai, *tmp;
1289 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1294 hints.ai_family = AF_UNSPEC;
1295 else if (!strcmp(family,
"ipv4"))
1296 hints.ai_family = AF_INET;
1297 else if (!strcmp(family,
"ipv6"))
1298 hints.ai_family = AF_INET6;
1303 "Unknown address family %s", family);
1306 hints.ai_protocol = IPPROTO_TCP;
1307 hints.ai_socktype = SOCK_STREAM;
1308 hints.ai_flags = AI_ADDRCONFIG;
1310 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0)
1314 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1315 host, port, gai_strerror(res), res);
1322 if (!_dbus_open_socket (&fd, tmp->ai_family, SOCK_STREAM, 0, error))
1325 _DBUS_ASSERT_ERROR_IS_SET(error);
1328 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1330 if (connect (fd, (
struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) < 0)
1332 saved_errno = errno;
1347 "Failed to connect to socket \"%s:%s\" %s",
1348 host, port, _dbus_strerror(saved_errno));
1352 if (noncefile !=
NULL)
1357 ret = _dbus_send_nonce (fd, &noncefileStr, error);
1367 if (!_dbus_set_fd_nonblocking (fd, error))
1401 int nlisten_fd = 0, *listen_fd =
NULL, res, i;
1402 struct addrinfo hints;
1403 struct addrinfo *ai, *tmp;
1404 unsigned int reuseaddr;
1407 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1412 hints.ai_family = AF_UNSPEC;
1413 else if (!strcmp(family,
"ipv4"))
1414 hints.ai_family = AF_INET;
1415 else if (!strcmp(family,
"ipv6"))
1416 hints.ai_family = AF_INET6;
1421 "Unknown address family %s", family);
1425 hints.ai_protocol = IPPROTO_TCP;
1426 hints.ai_socktype = SOCK_STREAM;
1427 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
1429 redo_lookup_with_port:
1431 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai)
1435 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1436 host ? host :
"*", port, gai_strerror(res), res);
1443 int fd = -1, *newlisten_fd;
1444 if (!_dbus_open_socket (&fd, tmp->ai_family, SOCK_STREAM, 0, error))
1446 _DBUS_ASSERT_ERROR_IS_SET(error);
1449 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1452 if (setsockopt (fd, SOL_SOCKET, SO_REUSEADDR, &reuseaddr,
sizeof(reuseaddr))==-1)
1454 _dbus_warn (
"Failed to set socket option \"%s:%s\": %s",
1455 host ? host :
"*", port, _dbus_strerror (errno));
1458 if (bind (fd, (
struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) < 0)
1460 saved_errno = errno;
1462 if (saved_errno == EADDRINUSE)
1471 "Failed to bind socket \"%s:%s\": %s",
1472 host ? host :
"*", port, _dbus_strerror (saved_errno));
1476 if (listen (fd, 30 ) < 0)
1478 saved_errno = errno;
1481 "Failed to listen on socket \"%s:%s\": %s",
1482 host ? host :
"*", port, _dbus_strerror (saved_errno));
1486 newlisten_fd =
dbus_realloc(listen_fd,
sizeof(
int)*(nlisten_fd+1));
1489 saved_errno = errno;
1492 "Failed to allocate file handle array: %s",
1493 _dbus_strerror (saved_errno));
1496 listen_fd = newlisten_fd;
1497 listen_fd[nlisten_fd] = fd;
1500 if (!_dbus_string_get_length(retport))
1506 if (!port || !strcmp(port,
"0"))
1509 struct sockaddr_storage addr;
1513 addrlen =
sizeof(addr);
1514 result = getsockname(fd, (
struct sockaddr*) &addr, &addrlen);
1517 (res = getnameinfo ((
struct sockaddr*)&addr, addrlen,
NULL, 0,
1518 portbuf,
sizeof(portbuf),
1519 NI_NUMERICHOST)) != 0)
1522 "Failed to resolve port \"%s:%s\": %s (%s)",
1523 host ? host :
"*", port, gai_strerror(res), res);
1533 port = _dbus_string_get_const_data(retport);
1535 goto redo_lookup_with_port;
1556 "Failed to bind socket \"%s:%s\": %s",
1557 host ? host :
"*", port, _dbus_strerror (errno));
1561 for (i = 0 ; i < nlisten_fd ; i++)
1563 if (!_dbus_set_fd_nonblocking (listen_fd[i], error))
1576 for (i = 0 ; i < nlisten_fd ; i++)
1583 write_credentials_byte (
int server_fd,
1587 char buf[1] = {
'\0' };
1588 #if defined(HAVE_CMSGCRED)
1591 char cred[CMSG_SPACE (
sizeof (
struct cmsgcred))];
1602 msg.msg_control = (caddr_t) &cmsg;
1603 msg.msg_controllen = CMSG_SPACE (
sizeof (
struct cmsgcred));
1605 cmsg.hdr.cmsg_len = CMSG_LEN (
sizeof (
struct cmsgcred));
1606 cmsg.hdr.cmsg_level = SOL_SOCKET;
1607 cmsg.hdr.cmsg_type = SCM_CREDS;
1610 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1614 #if defined(HAVE_CMSGCRED)
1615 bytes_written = sendmsg (server_fd, &msg, 0
1616 #
if HAVE_DECL_MSG_NOSIGNAL
1621 bytes_written = send (server_fd, buf, 1, 0
1622 #
if HAVE_DECL_MSG_NOSIGNAL
1628 if (bytes_written < 0 && errno == EINTR)
1631 if (bytes_written < 0)
1634 "Failed to write credentials byte: %s",
1635 _dbus_strerror (errno));
1638 else if (bytes_written == 0)
1641 "wrote zero bytes writing credentials byte");
1647 _dbus_verbose (
"wrote credentials byte\n");
1685 #ifdef HAVE_CMSGCRED
1688 char cred[CMSG_SPACE (
sizeof (
struct cmsgcred))];
1691 #elif defined(LOCAL_CREDS)
1694 struct sockcred cred;
1701 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1719 iov.iov_base = &buf;
1726 #if defined(HAVE_CMSGCRED) || defined(LOCAL_CREDS)
1728 msg.msg_control = (caddr_t) &cmsg;
1729 msg.msg_controllen = CMSG_SPACE (
sizeof (
struct cmsgcred));
1733 bytes_read = recvmsg (client_fd, &msg, 0);
1746 "Failed to read credentials byte: %s",
1747 _dbus_strerror (errno));
1750 else if (bytes_read == 0)
1756 "Failed to read credentials byte (zero-length read)");
1759 else if (buf !=
'\0')
1762 "Credentials byte was not nul");
1766 #if defined(HAVE_CMSGCRED) || defined(LOCAL_CREDS)
1767 if (cmsg.hdr.cmsg_len < CMSG_LEN (
sizeof (
struct cmsgcred))
1768 || cmsg.hdr.cmsg_type != SCM_CREDS)
1771 "Message from recvmsg() was not SCM_CREDS");
1776 _dbus_verbose (
"read credentials byte\n");
1781 struct sockpeercred cr;
1785 int cr_len =
sizeof (cr);
1787 if (getsockopt (client_fd, SOL_SOCKET, SO_PEERCRED, &cr, &cr_len) == 0 &&
1788 cr_len ==
sizeof (cr))
1795 _dbus_verbose (
"Failed to getsockopt() credentials, returned len %d/%d: %s\n",
1796 cr_len, (
int)
sizeof (cr), _dbus_strerror (errno));
1798 #elif defined(HAVE_CMSGCRED)
1799 struct cmsgcred *cred;
1801 cred = (
struct cmsgcred *) CMSG_DATA (&cmsg.hdr);
1802 pid_read = cred->cmcred_pid;
1803 uid_read = cred->cmcred_euid;
1804 #elif defined(LOCAL_CREDS)
1806 uid_read = cmsg.cred.sc_uid;
1809 _dbus_set_local_creds (client_fd,
FALSE);
1810 #elif defined(HAVE_GETPEEREID)
1813 if (getpeereid (client_fd, &euid, &egid) == 0)
1819 _dbus_verbose (
"Failed to getpeereid() credentials: %s\n", _dbus_strerror (errno));
1821 #elif defined(HAVE_GETPEERUCRED)
1822 ucred_t * ucred =
NULL;
1823 if (getpeerucred (client_fd, &ucred) == 0)
1825 pid_read = ucred_getpid (ucred);
1826 uid_read = ucred_geteuid (ucred);
1829 adt_session_data_t *adth =
NULL;
1830 adt_export_data_t *data =
NULL;
1832 if (adt_start_session (&adth,
NULL, 0) || (adth ==
NULL))
1834 _dbus_verbose (
"Failed to adt_start_session(): %s\n", _dbus_strerror (errno));
1838 if (adt_set_from_ucred (adth, ucred, ADT_NEW))
1840 _dbus_verbose (
"Failed to adt_set_from_ucred(): %s\n", _dbus_strerror (errno));
1844 size = adt_export_session_data (adth, &data);
1847 _dbus_verbose (
"Failed to adt_export_session_data(): %s\n", _dbus_strerror (errno));
1855 (void) adt_end_session (adth);
1861 _dbus_verbose (
"Failed to getpeerucred() credentials: %s\n", _dbus_strerror (errno));
1866 _dbus_verbose (
"Socket credentials not supported on this OS\n");
1870 _dbus_verbose (
"Credentials:"
1881 _DBUS_SET_OOM (error);
1890 _DBUS_SET_OOM (error);
1919 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1921 if (write_credentials_byte (server_fd, error))
1940 struct sockaddr addr;
1946 addrlen =
sizeof (addr);
1956 client_fd = accept4 (listen_fd, &addr, &addrlen, SOCK_CLOEXEC);
1957 cloexec_done = client_fd >= 0;
1959 if (client_fd < 0 && (errno == ENOSYS || errno == EINVAL))
1962 client_fd = accept (listen_fd, &addr, &addrlen);
1971 _dbus_verbose (
"client fd %d accepted\n", client_fd);
1994 const char *directory;
1997 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1999 directory = _dbus_string_get_const_data (dir);
2001 if (stat (directory, &sb) < 0)
2004 "%s", _dbus_strerror (errno));
2009 if ((S_IROTH & sb.st_mode) || (S_IWOTH & sb.st_mode) ||
2010 (S_IRGRP & sb.st_mode) || (S_IWGRP & sb.st_mode))
2013 "%s directory is not private to the user", directory);
2021 fill_user_info_from_passwd (
struct passwd *p,
2028 info->
uid = p->pw_uid;
2049 const char *username_c;
2062 if (username !=
NULL)
2063 username_c = _dbus_string_get_const_data (username);
2072 #if defined (HAVE_POSIX_GETPWNAM_R) || defined (HAVE_NONPOSIX_GETPWNAM_R)
2078 struct passwd p_str;
2081 buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
2087 if ((
long) buflen <= 0)
2101 #ifdef HAVE_POSIX_GETPWNAM_R
2103 result = getpwuid_r (uid, &p_str, buf, buflen,
2106 result = getpwnam_r (username_c, &p_str, buf, buflen,
2110 p = getpwuid_r (uid, &p_str, buf, buflen);
2112 p = getpwnam_r (username_c, &p_str, buf, buflen);
2116 if (result == ERANGE && buflen < 512 * 1024)
2126 if (result == 0 && p == &p_str)
2128 if (!fill_user_info_from_passwd (p, info, error))
2138 "User \"%s\" unknown or no memory to allocate password entry\n",
2139 username_c ? username_c :
"???");
2140 _dbus_verbose (
"User %s unknown\n", username_c ? username_c :
"???");
2153 p = getpwnam (username_c);
2157 if (!fill_user_info_from_passwd (p, info, error))
2165 "User \"%s\" unknown or no memory to allocate password entry\n",
2166 username_c ? username_c :
"???");
2167 _dbus_verbose (
"User %s unknown\n", username_c ? username_c :
"???");
2176 #ifdef HAVE_GETGROUPLIST
2181 int initial_buf_count;
2183 initial_buf_count = 17;
2184 buf_count = initial_buf_count;
2192 if (getgrouplist (username_c,
2194 buf, &buf_count) < 0)
2210 if (buf_count == initial_buf_count)
2225 if (getgrouplist (username_c, info->
primary_gid, buf, &buf_count) < 0)
2229 _dbus_warn (
"It appears that username \"%s\" is in more than %d groups.\nProceeding with just the first %d groups.",
2230 username_c, buf_count, buf_count);
2236 "Failed to get groups for username \"%s\" primary GID "
2239 _dbus_strerror (errno));
2254 for (i = 0; i < buf_count; ++i)
2277 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2282 _DBUS_ASSERT_ERROR_IS_SET (error);
2316 return fill_user_info (info, uid,
2418 if (_dbus_string_get_length (uid_str) == 0)
2420 _dbus_verbose (
"UID string was zero length\n");
2429 _dbus_verbose (
"could not parse string as a UID\n");
2433 if (end != _dbus_string_get_length (uid_str))
2435 _dbus_verbose (
"string contained trailing stuff after UID\n");
2458 return __sync_add_and_fetch(&atomic->
value, 1)-1;
2462 res = atomic->
value;
2479 return __sync_sub_and_fetch(&atomic->
value, 1)+1;
2484 res = atomic->
value;
2502 __sync_synchronize ();
2503 return atomic->
value;
2508 res = atomic->
value;
2525 int timeout_milliseconds)
2527 #if defined(HAVE_POLL) && !defined(BROKEN_POLL)
2538 sizeof (
DBusPollFD) ==
sizeof (
struct pollfd) &&
2540 _DBUS_STRUCT_OFFSET (
struct pollfd, fd) &&
2542 _DBUS_STRUCT_OFFSET (
struct pollfd, events) &&
2544 _DBUS_STRUCT_OFFSET (
struct pollfd, revents))
2546 return poll ((
struct pollfd*) fds,
2548 timeout_milliseconds);
2555 _dbus_warn (
"didn't implement poll() properly for this system yet\n");
2560 fd_set read_set, write_set, err_set;
2566 FD_ZERO (&read_set);
2567 FD_ZERO (&write_set);
2570 for (i = 0; i < n_fds; i++)
2575 FD_SET (fdp->
fd, &read_set);
2578 FD_SET (fdp->
fd, &write_set);
2580 FD_SET (fdp->
fd, &err_set);
2582 max_fd = MAX (max_fd, fdp->
fd);
2585 tv.tv_sec = timeout_milliseconds / 1000;
2586 tv.tv_usec = (timeout_milliseconds % 1000) * 1000;
2588 ready = select (max_fd + 1, &read_set, &write_set, &err_set,
2589 timeout_milliseconds < 0 ?
NULL : &tv);
2593 for (i = 0; i < n_fds; i++)
2599 if (FD_ISSET (fdp->
fd, &read_set))
2602 if (FD_ISSET (fdp->
fd, &write_set))
2605 if (FD_ISSET (fdp->
fd, &err_set))
2625 #ifdef HAVE_MONOTONIC_CLOCK
2627 clock_gettime (CLOCK_MONOTONIC, &ts);
2630 *tv_sec = ts.tv_sec;
2632 *tv_usec = ts.tv_nsec / 1000;
2636 gettimeofday (&t,
NULL);
2641 *tv_usec = t.tv_usec;
2658 gettimeofday (&t,
NULL);
2663 *tv_usec = t.tv_usec;
2678 const char *filename_c;
2680 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2682 filename_c = _dbus_string_get_const_data (filename);
2684 if (mkdir (filename_c, 0700) < 0)
2686 if (errno == EEXIST)
2690 "Failed to create directory %s: %s\n",
2691 filename_c, _dbus_strerror (errno));
2715 if (_dbus_string_get_length (dir) == 0 ||
2716 _dbus_string_get_length (next_component) == 0)
2719 dir_ends_in_slash =
'/' == _dbus_string_get_byte (dir,
2720 _dbus_string_get_length (dir) - 1);
2722 file_starts_with_slash =
'/' == _dbus_string_get_byte (next_component, 0);
2724 if (dir_ends_in_slash && file_starts_with_slash)
2728 else if (!(dir_ends_in_slash || file_starts_with_slash))
2735 _dbus_string_get_length (dir));
2739 #define NANOSECONDS_PER_SECOND 1000000000
2741 #define MICROSECONDS_PER_SECOND 1000000
2743 #define MILLISECONDS_PER_SECOND 1000
2745 #define NANOSECONDS_PER_MILLISECOND 1000000
2747 #define MICROSECONDS_PER_MILLISECOND 1000
2756 #ifdef HAVE_NANOSLEEP
2757 struct timespec req;
2758 struct timespec rem;
2760 req.tv_sec = milliseconds / MILLISECONDS_PER_SECOND;
2761 req.tv_nsec = (milliseconds % MILLISECONDS_PER_SECOND) * NANOSECONDS_PER_MILLISECOND;
2765 while (nanosleep (&req, &rem) < 0 && errno == EINTR)
2767 #elif defined (HAVE_USLEEP)
2768 usleep (milliseconds * MICROSECONDS_PER_MILLISECOND);
2770 sleep (MAX (milliseconds / 1000, 1));
2775 _dbus_generate_pseudorandom_bytes (
DBusString *str,
2781 old_len = _dbus_string_get_length (str);
2814 old_len = _dbus_string_get_length (str);
2818 fd = open (
"/dev/urandom", O_RDONLY);
2820 return _dbus_generate_pseudorandom_bytes (str, n_bytes);
2822 _dbus_verbose (
"/dev/urandom fd %d opened\n", fd);
2824 if (
_dbus_read (fd, str, n_bytes) != n_bytes)
2828 return _dbus_generate_pseudorandom_bytes (str, n_bytes);
2831 _dbus_verbose (
"Read %d bytes from /dev/urandom\n",
2859 _dbus_strerror (
int error_number)
2863 msg = strerror (error_number);
2876 signal (SIGPIPE, SIG_IGN);
2891 val = fcntl (fd, F_GETFD, 0);
2898 fcntl (fd, F_SETFD, val);
2912 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2921 "Could not close fd %d", fd);
2941 #ifdef F_DUPFD_CLOEXEC
2944 new_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
2945 cloexec_done = new_fd >= 0;
2947 if (new_fd < 0 && errno == EINVAL)
2950 new_fd = fcntl(fd, F_DUPFD, 3);
2956 "Could not duplicate fd %d", fd);
2960 #ifdef F_DUPFD_CLOEXEC
2978 _dbus_set_fd_nonblocking (
int fd,
2983 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2985 val = fcntl (fd, F_GETFL, 0);
2989 "Failed to get flags from file descriptor %d: %s",
2990 fd, _dbus_strerror (errno));
2991 _dbus_verbose (
"Failed to get flags for fd %d: %s\n", fd,
2992 _dbus_strerror (errno));
2996 if (fcntl (fd, F_SETFL, val | O_NONBLOCK) < 0)
2999 "Failed to set nonblocking flag of file descriptor %d: %s",
3000 fd, _dbus_strerror (errno));
3001 _dbus_verbose (
"Failed to set fd %d nonblocking: %s\n",
3002 fd, _dbus_strerror (errno));
3018 #if defined (HAVE_BACKTRACE) && defined (DBUS_BUILT_R_DYNAMIC)
3024 bt_size = backtrace (bt, 500);
3026 syms = backtrace_symbols (bt, bt_size);
3032 fprintf (stderr,
" %s\n", syms[i]);
3038 #elif defined (HAVE_BACKTRACE) && ! defined (DBUS_BUILT_R_DYNAMIC)
3039 fprintf (stderr,
" D-Bus not built with -rdynamic so unable to print a backtrace\n");
3041 fprintf (stderr,
" D-Bus not compiled with backtrace support so unable to print a backtrace\n");
3063 #ifdef HAVE_SOCKETPAIR
3070 retval = socketpair(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0, fds);
3071 cloexec_done = retval >= 0;
3073 if (retval < 0 && (errno == EINVAL || errno == EPROTOTYPE))
3076 retval = socketpair(AF_UNIX, SOCK_STREAM, 0, fds);
3082 "Could not create full-duplex pipe");
3086 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3097 (!_dbus_set_fd_nonblocking (fds[0],
NULL) ||
3098 !_dbus_set_fd_nonblocking (fds[1],
NULL)))
3101 "Could not set full-duplex pipe nonblocking");
3112 _dbus_verbose (
"full-duplex pipe %d <-> %d\n",
3117 _dbus_warn (
"_dbus_full_duplex_pipe() not implemented on this OS\n");
3119 "_dbus_full_duplex_pipe() not implemented on this OS");
3136 char static_buf[1024];
3137 int bufsize =
sizeof (static_buf);
3141 DBUS_VA_COPY (args_copy, args);
3142 len = vsnprintf (static_buf, bufsize, format, args_copy);
3159 DBUS_VA_COPY (args_copy, args);
3161 if (vsnprintf (static_buf, 1, format, args_copy) == 1)
3180 DBUS_VA_COPY (args_copy, args);
3181 len = vsnprintf (buf, bufsize, format, args_copy);
3205 static const char* tmpdir =
NULL;
3214 tmpdir = getenv(
"TMPDIR");
3220 tmpdir = getenv(
"TMP");
3222 tmpdir = getenv(
"TEMP");
3254 _read_subprocess_line_argv (
const char *progpath,
3260 int result_pipe[2] = { -1, -1 };
3261 int errors_pipe[2] = { -1, -1 };
3268 sigset_t new_set, old_set;
3270 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3277 sigemptyset (&new_set);
3278 sigaddset (&new_set, SIGCHLD);
3279 sigprocmask (SIG_BLOCK, &new_set, &old_set);
3281 orig_len = _dbus_string_get_length (result);
3285 if (pipe (result_pipe) < 0)
3288 "Failed to create a pipe to call %s: %s",
3289 progpath, _dbus_strerror (errno));
3290 _dbus_verbose (
"Failed to create a pipe to call %s: %s\n",
3291 progpath, _dbus_strerror (errno));
3294 if (pipe (errors_pipe) < 0)
3297 "Failed to create a pipe to call %s: %s",
3298 progpath, _dbus_strerror (errno));
3299 _dbus_verbose (
"Failed to create a pipe to call %s: %s\n",
3300 progpath, _dbus_strerror (errno));
3308 "Failed to fork() to call %s: %s",
3309 progpath, _dbus_strerror (errno));
3310 _dbus_verbose (
"Failed to fork() to call %s: %s\n",
3311 progpath, _dbus_strerror (errno));
3320 fd = open (
"/dev/null", O_RDWR);
3325 _dbus_verbose (
"/dev/null fd %d opened\n", fd);
3334 if (dup2 (fd, 0) == -1)
3336 if (dup2 (result_pipe[
WRITE_END], 1) == -1)
3338 if (dup2 (errors_pipe[WRITE_END], 2) == -1)
3343 sigprocmask (SIG_SETMASK, &old_set,
NULL);
3346 if (progpath[0] ==
'/')
3348 execv (progpath, argv);
3357 execvp (strrchr (progpath,
'/')+1, argv);
3360 execvp (progpath, argv);
3367 close (result_pipe[WRITE_END]);
3368 close (errors_pipe[WRITE_END]);
3382 ret = waitpid (pid, &status, 0);
3384 while (ret == -1 && errno == EINTR);
3388 if (!WIFEXITED (status) || WEXITSTATUS (status) != 0 )
3394 _DBUS_SET_OOM (error);
3406 if (_dbus_string_get_length (&error_message) > 0)
3408 "%s terminated abnormally with the following error: %s",
3409 progpath, _dbus_string_get_data (&error_message));
3412 "%s terminated abnormally without any error message",
3420 sigprocmask (SIG_SETMASK, &old_set,
NULL);
3423 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3425 _DBUS_ASSERT_ERROR_IS_SET (error);
3427 if (result_pipe[0] != -1)
3428 close (result_pipe[0]);
3429 if (result_pipe[1] != -1)
3430 close (result_pipe[1]);
3431 if (errors_pipe[0] != -1)
3432 close (errors_pipe[0]);
3433 if (errors_pipe[1] != -1)
3434 close (errors_pipe[1]);
3455 #ifdef DBUS_ENABLE_X11_AUTOLAUNCH
3459 const char *display;
3460 static char *argv[6];
3468 "Unable to autolaunch when setuid");
3472 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3480 if (display ==
NULL || display[0] ==
'\0')
3483 "Unable to autolaunch a dbus-daemon without a $DISPLAY for X11");
3489 _DBUS_SET_OOM (error);
3495 _DBUS_SET_OOM (error);
3500 argv[i] =
"dbus-launch";
3502 argv[i] =
"--autolaunch";
3504 argv[i] = _dbus_string_get_data (&uuid);
3506 argv[i] =
"--binary-syntax";
3508 argv[i] =
"--close-stderr";
3515 retval = _read_subprocess_line_argv (DBUS_BINDIR
"/dbus-launch",
3517 argv, address, error);
3524 "Using X11 for dbus-daemon autolaunch was disabled at compile time, "
3525 "set your DBUS_SESSION_BUS_ADDRESS instead");
3569 #define DBUS_UNIX_STANDARD_SESSION_SERVICEDIR "/dbus-1/services"
3570 #define DBUS_UNIX_STANDARD_SYSTEM_SERVICEDIR "/dbus-1/system-services"
3580 const char *launchd_env_var,
3583 #ifdef DBUS_ENABLE_LAUNCHD
3587 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3592 "Unable to find launchd socket when setuid");
3597 argv[i] =
"launchctl";
3601 argv[i] = (
char*)launchd_env_var;
3608 if (!_read_subprocess_line_argv(argv[0],
TRUE, argv, socket_path, error))
3614 if (_dbus_string_get_length(socket_path) == 0)
3624 "can't lookup socket from launchd; launchd support not compiled in");
3629 #ifdef DBUS_ENABLE_LAUNCHD
3639 "Unable to find launchd socket when setuid");
3645 _DBUS_SET_OOM (error);
3660 "launchd did not provide a socket path, "
3661 "verify that org.freedesktop.dbus-session.plist is loaded!");
3667 _DBUS_SET_OOM (error);
3672 _dbus_string_get_length (address)))
3674 _DBUS_SET_OOM (error);
3708 #ifdef DBUS_ENABLE_LAUNCHD
3710 return _dbus_lookup_session_address_launchd (address, error);
3741 const char *xdg_data_home;
3742 const char *xdg_data_dirs;
3751 if (xdg_data_home !=
NULL)
3775 if (xdg_data_dirs !=
NULL)
3799 DBUS_UNIX_STANDARD_SESSION_SERVICEDIR,
3842 static const char standard_search_path[] =
3852 DBUS_UNIX_STANDARD_SYSTEM_SERVICEDIR,
3928 #ifdef DBUS_BUILD_TESTS
3930 const char *
override;
3933 if (
override !=
NULL && *
override !=
'\0')
3939 _dbus_verbose (
"Using fake homedir for testing: %s\n",
3940 _dbus_string_get_const_data (&homedir));
3945 if (!already_warned)
3947 _dbus_warn (
"Using your real home directory for testing, set DBUS_TEST_HOMEDIR to avoid\n");
3948 already_warned =
TRUE;
3960 directory, _dbus_string_get_length (directory))) {
3974 _dbus_daemon_publish_session_bus_address (
const char* addr,
3982 _dbus_daemon_unpublish_session_bus_address (
void)
3996 return errno == EAGAIN || errno == EWOULDBLOCK;
4010 const char *filename_c;
4012 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
4014 filename_c = _dbus_string_get_const_data (filename);
4016 if (rmdir (filename_c) != 0)
4019 "Failed to remove directory %s: %s\n",
4020 filename_c, _dbus_strerror (errno));
4040 struct sockaddr_storage storage;
4041 struct sockaddr_un un;
4044 socklen_t sa_len =
sizeof(sa_buf);
4048 if (getsockname(fd, &sa_buf.sa, &sa_len) < 0)
4051 return sa_buf.sa.sa_family == AF_UNIX;
4068 _dbus_replace_install_prefix (
const char *configure_time_path)
4070 return configure_time_path;
4088 d = opendir (
"/proc/self/fd");
4098 k = readdir_r (d, &buf, &de);
4102 if (de->d_name[0] ==
'.')
4106 l = strtol (de->d_name, &e, 10);
4107 if (errno != 0 || e ==
NULL || *e !=
'\0')
4114 if (fd == dirfd (d))
4125 maxfds = sysconf (_SC_OPEN_MAX);
4134 for (i = 3; i < maxfds; i++)
4153 #if 0 && defined(HAVE_LIBC_ENABLE_SECURE)
4156 extern int __libc_enable_secure;
4157 return __libc_enable_secure;
4159 #elif defined(HAVE_ISSETUGID)
4161 return issetugid ();
4163 uid_t ruid, euid, suid;
4164 gid_t rgid, egid, sgid;
4169 if (_DBUS_UNLIKELY (!check_setuid_initialised))
4171 #ifdef HAVE_GETRESUID
4172 if (getresuid (&ruid, &euid, &suid) != 0 ||
4173 getresgid (&rgid, &egid, &sgid) != 0)
4176 suid = ruid = getuid ();
4177 sgid = rgid = getgid ();
4182 check_setuid_initialised =
TRUE;
4183 is_setuid = (ruid != euid || ruid != suid ||
4184 rgid != egid || rgid != sgid);