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
79 #include "sd-daemon.h"
86 #define AI_ADDRCONFIG 0
89 #ifndef HAVE_SOCKLEN_T
93 #if defined (__sun) || defined (__sun__)
106 # define CMSG_ALIGN(len) _CMSG_DATA_ALIGN (len)
109 # define CMSG_ALIGN(len) (((len) + sizeof (long) - 1) & \
110 ~(sizeof (long) - 1))
115 # define CMSG_SPACE(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + \
120 # define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
126 _dbus_open_socket (
int *fd_p,
135 *fd_p = socket (domain, type | SOCK_CLOEXEC, protocol);
136 cloexec_done = *fd_p >= 0;
139 if (*fd_p < 0 && errno == EINVAL)
142 *fd_p = socket (domain, type, protocol);
154 _dbus_verbose (
"socket fd %d opened\n", *fd_p);
161 "Failed to open socket: %s",
162 _dbus_strerror (errno));
178 _dbus_open_unix_socket (
int *fd,
181 return _dbus_open_socket(fd, PF_UNIX, SOCK_STREAM, 0, error);
232 #if HAVE_DECL_MSG_NOSIGNAL
236 data = _dbus_string_get_const_data_len (buffer, start, len);
240 bytes_written = send (fd, data, len, MSG_NOSIGNAL);
242 if (bytes_written < 0 && errno == EINTR)
245 return bytes_written;
270 #ifndef HAVE_UNIX_FD_PASSING
288 start = _dbus_string_get_length (buffer);
308 m.msg_controllen = CMSG_SPACE(*n_fds *
sizeof(
int));
312 m.msg_control = alloca(m.msg_controllen);
313 memset(m.msg_control, 0, m.msg_controllen);
319 m.msg_controllen = CMSG_LEN (*n_fds *
sizeof(
int));
323 bytes_read = recvmsg(fd, &m, 0
324 #ifdef MSG_CMSG_CLOEXEC
345 if (m.msg_flags & MSG_CTRUNC)
357 for (cm = CMSG_FIRSTHDR(&m); cm; cm = CMSG_NXTHDR(&m, cm))
358 if (cm->cmsg_level == SOL_SOCKET && cm->cmsg_type == SCM_RIGHTS)
361 int *payload = (
int *) CMSG_DATA (cm);
362 size_t payload_len_bytes = (cm->cmsg_len - CMSG_LEN (0));
363 size_t payload_len_fds = payload_len_bytes /
sizeof (int);
369 _DBUS_STATIC_ASSERT (
sizeof (
size_t) >=
sizeof (
int));
371 if (_DBUS_LIKELY (payload_len_fds <= (
size_t) *n_fds))
374 fds_to_use = payload_len_fds;
382 fds_to_use = (size_t) *n_fds;
387 for (i = fds_to_use; i < payload_len_fds; i++)
393 memcpy (fds, payload, fds_to_use *
sizeof (
int));
397 *n_fds = (int) fds_to_use;
402 for (i = 0; i < fds_to_use; i++)
425 _dbus_write_socket_with_unix_fds(
int fd,
432 #ifndef HAVE_UNIX_FD_PASSING
441 return _dbus_write_socket_with_unix_fds_two(fd, buffer, start, len,
NULL, 0, 0, fds, n_fds);
446 _dbus_write_socket_with_unix_fds_two(
int fd,
456 #ifndef HAVE_UNIX_FD_PASSING
464 buffer1, start1, len1,
465 buffer2, start2, len2);
478 iov[0].iov_base = (
char*) _dbus_string_get_const_data_len (buffer1, start1, len1);
479 iov[0].iov_len = len1;
483 iov[1].iov_base = (
char*) _dbus_string_get_const_data_len (buffer2, start2, len2);
484 iov[1].iov_len = len2;
489 m.msg_iovlen = buffer2 ? 2 : 1;
493 m.msg_controllen = CMSG_SPACE(n_fds *
sizeof(
int));
494 m.msg_control = alloca(m.msg_controllen);
495 memset(m.msg_control, 0, m.msg_controllen);
497 cm = CMSG_FIRSTHDR(&m);
498 cm->cmsg_level = SOL_SOCKET;
499 cm->cmsg_type = SCM_RIGHTS;
500 cm->cmsg_len = CMSG_LEN(n_fds *
sizeof(
int));
501 memcpy(CMSG_DATA(cm), fds, n_fds *
sizeof(
int));
506 bytes_written = sendmsg (fd, &m, 0
507 #
if HAVE_DECL_MSG_NOSIGNAL
512 if (bytes_written < 0 && errno == EINTR)
516 if (bytes_written > 0)
520 return bytes_written;
546 #if HAVE_DECL_MSG_NOSIGNAL
547 struct iovec vectors[2];
559 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
562 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
570 vectors[0].iov_base = (
char*) data1;
571 vectors[0].iov_len = len1;
572 vectors[1].iov_base = (
char*) data2;
573 vectors[1].iov_len = len2;
577 m.msg_iovlen = data2 ? 2 : 1;
581 bytes_written = sendmsg (fd, &m, MSG_NOSIGNAL);
583 if (bytes_written < 0 && errno == EINTR)
586 return bytes_written;
590 buffer2, start2, len2);
595 _dbus_socket_is_invalid (
int fd)
627 start = _dbus_string_get_length (buffer);
639 bytes_read = read (fd, data, count);
685 data = _dbus_string_get_const_data_len (buffer, start, len);
689 bytes_written = write (fd, data, len);
691 if (bytes_written < 0 && errno == EINTR)
695 if (bytes_written > 0)
699 return bytes_written;
739 struct iovec vectors[2];
744 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
747 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
755 vectors[0].iov_base = (
char*) data1;
756 vectors[0].iov_len = len1;
757 vectors[1].iov_base = (
char*) data2;
758 vectors[1].iov_len = len2;
762 bytes_written = writev (fd,
766 if (bytes_written < 0 && errno == EINTR)
769 return bytes_written;
776 if (ret1 == len1 && buffer2 !=
NULL)
790 #define _DBUS_MAX_SUN_PATH_LENGTH 99
828 struct sockaddr_un addr;
830 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
832 _dbus_verbose (
"connecting to unix socket %s abstract=%d\n",
836 if (!_dbus_open_unix_socket (&fd, error))
838 _DBUS_ASSERT_ERROR_IS_SET(error);
841 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
844 addr.sun_family = AF_UNIX;
845 path_len = strlen (path);
849 #ifdef HAVE_ABSTRACT_SOCKETS
850 addr.sun_path[0] =
'\0';
853 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
856 "Abstract socket name too long\n");
861 strncpy (&addr.sun_path[1], path, path_len);
865 "Operating system does not support abstract socket namespace\n");
872 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
875 "Socket name too long\n");
880 strncpy (addr.sun_path, path, path_len);
883 if (connect (fd, (
struct sockaddr*) &addr, _DBUS_STRUCT_OFFSET (
struct sockaddr_un, sun_path) + path_len) < 0)
887 "Failed to connect to socket %s: %s",
888 path, _dbus_strerror (errno));
894 if (!_dbus_set_fd_nonblocking (fd, error))
896 _DBUS_ASSERT_ERROR_IS_SET (error);
925 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
927 _dbus_verbose (
"connecting to process %s\n", path);
929 if (socketpair (AF_UNIX, SOCK_STREAM
937 "Failed to create socket pair: %s",
938 _dbus_strerror (errno));
950 "Failed to fork() to call %s: %s",
951 path, _dbus_strerror (errno));
962 dup2 (fds[1], STDIN_FILENO);
963 dup2 (fds[1], STDOUT_FILENO);
965 if (fds[1] != STDIN_FILENO &&
966 fds[1] != STDOUT_FILENO)
976 fprintf (stderr,
"Failed to execute process %s: %s\n", path, _dbus_strerror (errno));
984 if (!_dbus_set_fd_nonblocking (fds[0], error))
986 _DBUS_ASSERT_ERROR_IS_SET (error);
1009 #if defined(HAVE_CMSGCRED)
1013 #elif defined(LOCAL_CREDS)
1014 int val = on ? 1 : 0;
1015 if (setsockopt (fd, 0, LOCAL_CREDS, &val,
sizeof (val)) < 0)
1017 _dbus_verbose (
"Unable to set LOCAL_CREDS socket option on fd %d\n", fd);
1021 _dbus_verbose (
"LOCAL_CREDS %s for further messages on fd %d\n",
1022 on ?
"enabled" :
"disabled", fd);
1051 struct sockaddr_un addr;
1053 unsigned int reuseaddr;
1055 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1057 _dbus_verbose (
"listening on unix socket %s abstract=%d\n",
1060 if (!_dbus_open_unix_socket (&listen_fd, error))
1062 _DBUS_ASSERT_ERROR_IS_SET(error);
1065 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1068 addr.sun_family = AF_UNIX;
1069 path_len = strlen (path);
1073 #ifdef HAVE_ABSTRACT_SOCKETS
1077 addr.sun_path[0] =
'\0';
1080 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
1083 "Abstract socket name too long\n");
1088 strncpy (&addr.sun_path[1], path, path_len);
1092 "Operating system does not support abstract socket namespace\n");
1112 if (stat (path, &sb) == 0 &&
1113 S_ISSOCK (sb.st_mode))
1117 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
1120 "Abstract socket name too long\n");
1125 strncpy (addr.sun_path, path, path_len);
1129 if (setsockopt (listen_fd, SOL_SOCKET, SO_REUSEADDR, &reuseaddr,
sizeof(reuseaddr))==-1)
1131 _dbus_warn (
"Failed to set socket option\"%s\": %s",
1132 path, _dbus_strerror (errno));
1135 if (bind (listen_fd, (
struct sockaddr*) &addr, _DBUS_STRUCT_OFFSET (
struct sockaddr_un, sun_path) + path_len) < 0)
1138 "Failed to bind socket \"%s\": %s",
1139 path, _dbus_strerror (errno));
1144 if (listen (listen_fd, 30 ) < 0)
1147 "Failed to listen on socket \"%s\": %s",
1148 path, _dbus_strerror (errno));
1153 if (!_dbus_set_local_creds (listen_fd,
TRUE))
1156 "Failed to enable LOCAL_CREDS on socket \"%s\": %s",
1157 path, _dbus_strerror (errno));
1162 if (!_dbus_set_fd_nonblocking (listen_fd, error))
1164 _DBUS_ASSERT_ERROR_IS_SET (error);
1172 if (!
abstract && chmod (path, 0777) < 0)
1173 _dbus_warn (
"Could not set mode 0777 on socket %s\n",
1197 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1199 n = sd_listen_fds (
TRUE);
1203 "Failed to acquire systemd socket: %s",
1204 _dbus_strerror (-n));
1211 "No socket received.");
1215 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1217 r = sd_is_socket (fd, AF_UNSPEC, SOCK_STREAM, 1);
1221 "Failed to verify systemd socket type: %s",
1222 _dbus_strerror (-r));
1229 "Passed socket has wrong type.");
1241 "Failed to allocate file handle array.");
1245 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1247 if (!_dbus_set_local_creds (fd,
TRUE))
1250 "Failed to enable LOCAL_CREDS on systemd socket: %s",
1251 _dbus_strerror (errno));
1255 if (!_dbus_set_fd_nonblocking (fd, error))
1257 _DBUS_ASSERT_ERROR_IS_SET (error);
1261 new_fds[fd - SD_LISTEN_FDS_START] = fd;
1269 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1297 return _dbus_connect_tcp_socket_with_nonce (host, port, family, (
const char*)
NULL, error);
1301 _dbus_connect_tcp_socket_with_nonce (
const char *host,
1304 const char *noncefile,
1307 int saved_errno = 0;
1309 struct addrinfo hints;
1310 struct addrinfo *ai, *tmp;
1312 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1317 hints.ai_family = AF_UNSPEC;
1318 else if (!strcmp(family,
"ipv4"))
1319 hints.ai_family = AF_INET;
1320 else if (!strcmp(family,
"ipv6"))
1321 hints.ai_family = AF_INET6;
1326 "Unknown address family %s", family);
1329 hints.ai_protocol = IPPROTO_TCP;
1330 hints.ai_socktype = SOCK_STREAM;
1331 hints.ai_flags = AI_ADDRCONFIG;
1333 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0)
1337 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1338 host, port, gai_strerror(res), res);
1345 if (!_dbus_open_socket (&fd, tmp->ai_family, SOCK_STREAM, 0, error))
1348 _DBUS_ASSERT_ERROR_IS_SET(error);
1351 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1353 if (connect (fd, (
struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) < 0)
1355 saved_errno = errno;
1370 "Failed to connect to socket \"%s:%s\" %s",
1371 host, port, _dbus_strerror(saved_errno));
1375 if (noncefile !=
NULL)
1380 ret = _dbus_send_nonce (fd, &noncefileStr, error);
1390 if (!_dbus_set_fd_nonblocking (fd, error))
1424 int nlisten_fd = 0, *listen_fd =
NULL, res, i;
1425 struct addrinfo hints;
1426 struct addrinfo *ai, *tmp;
1427 unsigned int reuseaddr;
1430 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1435 hints.ai_family = AF_UNSPEC;
1436 else if (!strcmp(family,
"ipv4"))
1437 hints.ai_family = AF_INET;
1438 else if (!strcmp(family,
"ipv6"))
1439 hints.ai_family = AF_INET6;
1444 "Unknown address family %s", family);
1448 hints.ai_protocol = IPPROTO_TCP;
1449 hints.ai_socktype = SOCK_STREAM;
1450 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
1452 redo_lookup_with_port:
1454 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai)
1458 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1459 host ? host :
"*", port, gai_strerror(res), res);
1466 int fd = -1, *newlisten_fd;
1467 if (!_dbus_open_socket (&fd, tmp->ai_family, SOCK_STREAM, 0, error))
1469 _DBUS_ASSERT_ERROR_IS_SET(error);
1472 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1475 if (setsockopt (fd, SOL_SOCKET, SO_REUSEADDR, &reuseaddr,
sizeof(reuseaddr))==-1)
1477 _dbus_warn (
"Failed to set socket option \"%s:%s\": %s",
1478 host ? host :
"*", port, _dbus_strerror (errno));
1481 if (bind (fd, (
struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) < 0)
1483 saved_errno = errno;
1485 if (saved_errno == EADDRINUSE)
1494 "Failed to bind socket \"%s:%s\": %s",
1495 host ? host :
"*", port, _dbus_strerror (saved_errno));
1499 if (listen (fd, 30 ) < 0)
1501 saved_errno = errno;
1504 "Failed to listen on socket \"%s:%s\": %s",
1505 host ? host :
"*", port, _dbus_strerror (saved_errno));
1509 newlisten_fd =
dbus_realloc(listen_fd,
sizeof(
int)*(nlisten_fd+1));
1512 saved_errno = errno;
1515 "Failed to allocate file handle array: %s",
1516 _dbus_strerror (saved_errno));
1519 listen_fd = newlisten_fd;
1520 listen_fd[nlisten_fd] = fd;
1523 if (!_dbus_string_get_length(retport))
1529 if (!port || !strcmp(port,
"0"))
1532 struct sockaddr_storage addr;
1536 addrlen =
sizeof(addr);
1537 result = getsockname(fd, (
struct sockaddr*) &addr, &addrlen);
1540 (res = getnameinfo ((
struct sockaddr*)&addr, addrlen,
NULL, 0,
1541 portbuf,
sizeof(portbuf),
1542 NI_NUMERICHOST)) != 0)
1545 "Failed to resolve port \"%s:%s\": %s (%s)",
1546 host ? host :
"*", port, gai_strerror(res), res);
1556 port = _dbus_string_get_const_data(retport);
1558 goto redo_lookup_with_port;
1579 "Failed to bind socket \"%s:%s\": %s",
1580 host ? host :
"*", port, _dbus_strerror (errno));
1584 for (i = 0 ; i < nlisten_fd ; i++)
1586 if (!_dbus_set_fd_nonblocking (listen_fd[i], error))
1599 for (i = 0 ; i < nlisten_fd ; i++)
1606 write_credentials_byte (
int server_fd,
1610 char buf[1] = {
'\0' };
1611 #if defined(HAVE_CMSGCRED)
1614 char cred[CMSG_SPACE (
sizeof (
struct cmsgcred))];
1625 msg.msg_control = (caddr_t) &cmsg;
1626 msg.msg_controllen = CMSG_SPACE (
sizeof (
struct cmsgcred));
1628 cmsg.hdr.cmsg_len = CMSG_LEN (
sizeof (
struct cmsgcred));
1629 cmsg.hdr.cmsg_level = SOL_SOCKET;
1630 cmsg.hdr.cmsg_type = SCM_CREDS;
1633 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1637 #if defined(HAVE_CMSGCRED)
1638 bytes_written = sendmsg (server_fd, &msg, 0
1639 #
if HAVE_DECL_MSG_NOSIGNAL
1644 bytes_written = send (server_fd, buf, 1, 0
1645 #
if HAVE_DECL_MSG_NOSIGNAL
1651 if (bytes_written < 0 && errno == EINTR)
1654 if (bytes_written < 0)
1657 "Failed to write credentials byte: %s",
1658 _dbus_strerror (errno));
1661 else if (bytes_written == 0)
1664 "wrote zero bytes writing credentials byte");
1670 _dbus_verbose (
"wrote credentials byte\n");
1708 #ifdef HAVE_CMSGCRED
1711 char cred[CMSG_SPACE (
sizeof (
struct cmsgcred))];
1714 #elif defined(LOCAL_CREDS)
1717 struct sockcred cred;
1724 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1742 iov.iov_base = &buf;
1749 #if defined(HAVE_CMSGCRED) || defined(LOCAL_CREDS)
1751 msg.msg_control = (caddr_t) &cmsg;
1752 msg.msg_controllen = CMSG_SPACE (
sizeof (
struct cmsgcred));
1756 bytes_read = recvmsg (client_fd, &msg, 0);
1769 "Failed to read credentials byte: %s",
1770 _dbus_strerror (errno));
1773 else if (bytes_read == 0)
1779 "Failed to read credentials byte (zero-length read)");
1782 else if (buf !=
'\0')
1785 "Credentials byte was not nul");
1789 #if defined(HAVE_CMSGCRED) || defined(LOCAL_CREDS)
1790 if (cmsg.hdr.cmsg_len < CMSG_LEN (
sizeof (
struct cmsgcred))
1791 || cmsg.hdr.cmsg_type != SCM_CREDS)
1794 "Message from recvmsg() was not SCM_CREDS");
1799 _dbus_verbose (
"read credentials byte\n");
1804 struct sockpeercred cr;
1808 int cr_len =
sizeof (cr);
1810 if (getsockopt (client_fd, SOL_SOCKET, SO_PEERCRED, &cr, &cr_len) == 0 &&
1811 cr_len ==
sizeof (cr))
1818 _dbus_verbose (
"Failed to getsockopt() credentials, returned len %d/%d: %s\n",
1819 cr_len, (
int)
sizeof (cr), _dbus_strerror (errno));
1821 #elif defined(HAVE_CMSGCRED)
1822 struct cmsgcred *cred;
1824 cred = (
struct cmsgcred *) CMSG_DATA (&cmsg.hdr);
1825 pid_read = cred->cmcred_pid;
1826 uid_read = cred->cmcred_euid;
1827 #elif defined(LOCAL_CREDS)
1829 uid_read = cmsg.cred.sc_uid;
1832 _dbus_set_local_creds (client_fd,
FALSE);
1833 #elif defined(HAVE_GETPEEREID)
1836 if (getpeereid (client_fd, &euid, &egid) == 0)
1842 _dbus_verbose (
"Failed to getpeereid() credentials: %s\n", _dbus_strerror (errno));
1844 #elif defined(HAVE_GETPEERUCRED)
1845 ucred_t * ucred =
NULL;
1846 if (getpeerucred (client_fd, &ucred) == 0)
1848 pid_read = ucred_getpid (ucred);
1849 uid_read = ucred_geteuid (ucred);
1852 adt_session_data_t *adth =
NULL;
1853 adt_export_data_t *data =
NULL;
1855 if (adt_start_session (&adth,
NULL, 0) || (adth ==
NULL))
1857 _dbus_verbose (
"Failed to adt_start_session(): %s\n", _dbus_strerror (errno));
1861 if (adt_set_from_ucred (adth, ucred, ADT_NEW))
1863 _dbus_verbose (
"Failed to adt_set_from_ucred(): %s\n", _dbus_strerror (errno));
1867 size = adt_export_session_data (adth, &data);
1870 _dbus_verbose (
"Failed to adt_export_session_data(): %s\n", _dbus_strerror (errno));
1878 (void) adt_end_session (adth);
1884 _dbus_verbose (
"Failed to getpeerucred() credentials: %s\n", _dbus_strerror (errno));
1889 _dbus_verbose (
"Socket credentials not supported on this OS\n");
1893 _dbus_verbose (
"Credentials:"
1904 _DBUS_SET_OOM (error);
1913 _DBUS_SET_OOM (error);
1942 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1944 if (write_credentials_byte (server_fd, error))
1963 struct sockaddr addr;
1969 addrlen =
sizeof (addr);
1975 client_fd = accept4 (listen_fd, &addr, &addrlen, SOCK_CLOEXEC);
1976 cloexec_done = client_fd >= 0;
1978 if (client_fd < 0 && errno == ENOSYS)
1981 client_fd = accept (listen_fd, &addr, &addrlen);
1990 _dbus_verbose (
"client fd %d accepted\n", client_fd);
2013 const char *directory;
2016 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2018 directory = _dbus_string_get_const_data (dir);
2020 if (stat (directory, &sb) < 0)
2023 "%s", _dbus_strerror (errno));
2028 if ((S_IROTH & sb.st_mode) || (S_IWOTH & sb.st_mode) ||
2029 (S_IRGRP & sb.st_mode) || (S_IWGRP & sb.st_mode))
2032 "%s directory is not private to the user", directory);
2040 fill_user_info_from_passwd (
struct passwd *p,
2047 info->
uid = p->pw_uid;
2068 const char *username_c;
2081 if (username !=
NULL)
2082 username_c = _dbus_string_get_const_data (username);
2091 #if defined (HAVE_POSIX_GETPWNAM_R) || defined (HAVE_NONPOSIX_GETPWNAM_R)
2097 struct passwd p_str;
2100 buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
2106 if ((
long) buflen <= 0)
2120 #ifdef HAVE_POSIX_GETPWNAM_R
2122 result = getpwuid_r (uid, &p_str, buf, buflen,
2125 result = getpwnam_r (username_c, &p_str, buf, buflen,
2129 p = getpwuid_r (uid, &p_str, buf, buflen);
2131 p = getpwnam_r (username_c, &p_str, buf, buflen);
2135 if (result == ERANGE && buflen < 512 * 1024)
2145 if (result == 0 && p == &p_str)
2147 if (!fill_user_info_from_passwd (p, info, error))
2157 "User \"%s\" unknown or no memory to allocate password entry\n",
2158 username_c ? username_c :
"???");
2159 _dbus_verbose (
"User %s unknown\n", username_c ? username_c :
"???");
2172 p = getpwnam (username_c);
2176 if (!fill_user_info_from_passwd (p, info, error))
2184 "User \"%s\" unknown or no memory to allocate password entry\n",
2185 username_c ? username_c :
"???");
2186 _dbus_verbose (
"User %s unknown\n", username_c ? username_c :
"???");
2195 #ifdef HAVE_GETGROUPLIST
2200 int initial_buf_count;
2202 initial_buf_count = 17;
2203 buf_count = initial_buf_count;
2211 if (getgrouplist (username_c,
2213 buf, &buf_count) < 0)
2229 if (buf_count == initial_buf_count)
2244 if (getgrouplist (username_c, info->
primary_gid, buf, &buf_count) < 0)
2248 _dbus_warn (
"It appears that username \"%s\" is in more than %d groups.\nProceeding with just the first %d groups.",
2249 username_c, buf_count, buf_count);
2255 "Failed to get groups for username \"%s\" primary GID "
2258 _dbus_strerror (errno));
2273 for (i = 0; i < buf_count; ++i)
2296 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2301 _DBUS_ASSERT_ERROR_IS_SET (error);
2335 return fill_user_info (info, uid,
2437 if (_dbus_string_get_length (uid_str) == 0)
2439 _dbus_verbose (
"UID string was zero length\n");
2448 _dbus_verbose (
"could not parse string as a UID\n");
2452 if (end != _dbus_string_get_length (uid_str))
2454 _dbus_verbose (
"string contained trailing stuff after UID\n");
2477 return __sync_add_and_fetch(&atomic->
value, 1)-1;
2481 res = atomic->
value;
2498 return __sync_sub_and_fetch(&atomic->
value, 1)+1;
2503 res = atomic->
value;
2521 __sync_synchronize ();
2522 return atomic->
value;
2527 res = atomic->
value;
2544 int timeout_milliseconds)
2546 #if defined(HAVE_POLL) && !defined(BROKEN_POLL)
2557 sizeof (
DBusPollFD) ==
sizeof (
struct pollfd) &&
2559 _DBUS_STRUCT_OFFSET (
struct pollfd, fd) &&
2561 _DBUS_STRUCT_OFFSET (
struct pollfd, events) &&
2563 _DBUS_STRUCT_OFFSET (
struct pollfd, revents))
2565 return poll ((
struct pollfd*) fds,
2567 timeout_milliseconds);
2574 _dbus_warn (
"didn't implement poll() properly for this system yet\n");
2579 fd_set read_set, write_set, err_set;
2585 FD_ZERO (&read_set);
2586 FD_ZERO (&write_set);
2589 for (i = 0; i < n_fds; i++)
2594 FD_SET (fdp->
fd, &read_set);
2597 FD_SET (fdp->
fd, &write_set);
2599 FD_SET (fdp->
fd, &err_set);
2601 max_fd = MAX (max_fd, fdp->
fd);
2604 tv.tv_sec = timeout_milliseconds / 1000;
2605 tv.tv_usec = (timeout_milliseconds % 1000) * 1000;
2607 ready = select (max_fd + 1, &read_set, &write_set, &err_set,
2608 timeout_milliseconds < 0 ?
NULL : &tv);
2612 for (i = 0; i < n_fds; i++)
2618 if (FD_ISSET (fdp->
fd, &read_set))
2621 if (FD_ISSET (fdp->
fd, &write_set))
2624 if (FD_ISSET (fdp->
fd, &err_set))
2644 #ifdef HAVE_MONOTONIC_CLOCK
2646 clock_gettime (CLOCK_MONOTONIC, &ts);
2649 *tv_sec = ts.tv_sec;
2651 *tv_usec = ts.tv_nsec / 1000;
2655 gettimeofday (&t,
NULL);
2660 *tv_usec = t.tv_usec;
2677 gettimeofday (&t,
NULL);
2682 *tv_usec = t.tv_usec;
2697 const char *filename_c;
2699 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2701 filename_c = _dbus_string_get_const_data (filename);
2703 if (mkdir (filename_c, 0700) < 0)
2705 if (errno == EEXIST)
2709 "Failed to create directory %s: %s\n",
2710 filename_c, _dbus_strerror (errno));
2734 if (_dbus_string_get_length (dir) == 0 ||
2735 _dbus_string_get_length (next_component) == 0)
2738 dir_ends_in_slash =
'/' == _dbus_string_get_byte (dir,
2739 _dbus_string_get_length (dir) - 1);
2741 file_starts_with_slash =
'/' == _dbus_string_get_byte (next_component, 0);
2743 if (dir_ends_in_slash && file_starts_with_slash)
2747 else if (!(dir_ends_in_slash || file_starts_with_slash))
2754 _dbus_string_get_length (dir));
2758 #define NANOSECONDS_PER_SECOND 1000000000
2760 #define MICROSECONDS_PER_SECOND 1000000
2762 #define MILLISECONDS_PER_SECOND 1000
2764 #define NANOSECONDS_PER_MILLISECOND 1000000
2766 #define MICROSECONDS_PER_MILLISECOND 1000
2775 #ifdef HAVE_NANOSLEEP
2776 struct timespec req;
2777 struct timespec rem;
2779 req.tv_sec = milliseconds / MILLISECONDS_PER_SECOND;
2780 req.tv_nsec = (milliseconds % MILLISECONDS_PER_SECOND) * NANOSECONDS_PER_MILLISECOND;
2784 while (nanosleep (&req, &rem) < 0 && errno == EINTR)
2786 #elif defined (HAVE_USLEEP)
2787 usleep (milliseconds * MICROSECONDS_PER_MILLISECOND);
2789 sleep (MAX (milliseconds / 1000, 1));
2794 _dbus_generate_pseudorandom_bytes (
DBusString *str,
2800 old_len = _dbus_string_get_length (str);
2833 old_len = _dbus_string_get_length (str);
2837 fd = open (
"/dev/urandom", O_RDONLY);
2839 return _dbus_generate_pseudorandom_bytes (str, n_bytes);
2841 _dbus_verbose (
"/dev/urandom fd %d opened\n", fd);
2843 if (
_dbus_read (fd, str, n_bytes) != n_bytes)
2847 return _dbus_generate_pseudorandom_bytes (str, n_bytes);
2850 _dbus_verbose (
"Read %d bytes from /dev/urandom\n",
2878 _dbus_strerror (
int error_number)
2882 msg = strerror (error_number);
2895 signal (SIGPIPE, SIG_IGN);
2910 val = fcntl (fd, F_GETFD, 0);
2917 fcntl (fd, F_SETFD, val);
2931 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2940 "Could not close fd %d", fd);
2960 #ifdef F_DUPFD_CLOEXEC
2963 new_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
2964 cloexec_done = new_fd >= 0;
2966 if (new_fd < 0 && errno == EINVAL)
2969 new_fd = fcntl(fd, F_DUPFD, 3);
2975 "Could not duplicate fd %d", fd);
2979 #ifdef F_DUPFD_CLOEXEC
2997 _dbus_set_fd_nonblocking (
int fd,
3002 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3004 val = fcntl (fd, F_GETFL, 0);
3008 "Failed to get flags from file descriptor %d: %s",
3009 fd, _dbus_strerror (errno));
3010 _dbus_verbose (
"Failed to get flags for fd %d: %s\n", fd,
3011 _dbus_strerror (errno));
3015 if (fcntl (fd, F_SETFL, val | O_NONBLOCK) < 0)
3018 "Failed to set nonblocking flag of file descriptor %d: %s",
3019 fd, _dbus_strerror (errno));
3020 _dbus_verbose (
"Failed to set fd %d nonblocking: %s\n",
3021 fd, _dbus_strerror (errno));
3037 #if defined (HAVE_BACKTRACE) && defined (DBUS_BUILT_R_DYNAMIC)
3043 bt_size = backtrace (bt, 500);
3045 syms = backtrace_symbols (bt, bt_size);
3051 fprintf (stderr,
" %s\n", syms[i]);
3057 #elif defined (HAVE_BACKTRACE) && ! defined (DBUS_BUILT_R_DYNAMIC)
3058 fprintf (stderr,
" D-Bus not built with -rdynamic so unable to print a backtrace\n");
3060 fprintf (stderr,
" D-Bus not compiled with backtrace support so unable to print a backtrace\n");
3082 #ifdef HAVE_SOCKETPAIR
3089 retval = socketpair(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0, fds);
3090 cloexec_done = retval >= 0;
3092 if (retval < 0 && errno == EINVAL)
3095 retval = socketpair(AF_UNIX, SOCK_STREAM, 0, fds);
3101 "Could not create full-duplex pipe");
3105 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3116 (!_dbus_set_fd_nonblocking (fds[0],
NULL) ||
3117 !_dbus_set_fd_nonblocking (fds[1],
NULL)))
3120 "Could not set full-duplex pipe nonblocking");
3131 _dbus_verbose (
"full-duplex pipe %d <-> %d\n",
3136 _dbus_warn (
"_dbus_full_duplex_pipe() not implemented on this OS\n");
3138 "_dbus_full_duplex_pipe() not implemented on this OS");
3155 char static_buf[1024];
3156 int bufsize =
sizeof (static_buf);
3160 DBUS_VA_COPY (args_copy, args);
3161 len = vsnprintf (static_buf, bufsize, format, args_copy);
3178 DBUS_VA_COPY (args_copy, args);
3180 if (vsnprintf (static_buf, 1, format, args_copy) == 1)
3199 DBUS_VA_COPY (args_copy, args);
3200 len = vsnprintf (buf, bufsize, format, args_copy);
3224 static const char* tmpdir =
NULL;
3233 tmpdir = getenv(
"TMPDIR");
3239 tmpdir = getenv(
"TMP");
3241 tmpdir = getenv(
"TEMP");
3273 _read_subprocess_line_argv (
const char *progpath,
3279 int result_pipe[2] = { -1, -1 };
3280 int errors_pipe[2] = { -1, -1 };
3287 sigset_t new_set, old_set;
3289 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3296 sigemptyset (&new_set);
3297 sigaddset (&new_set, SIGCHLD);
3298 sigprocmask (SIG_BLOCK, &new_set, &old_set);
3300 orig_len = _dbus_string_get_length (result);
3304 if (pipe (result_pipe) < 0)
3307 "Failed to create a pipe to call %s: %s",
3308 progpath, _dbus_strerror (errno));
3309 _dbus_verbose (
"Failed to create a pipe to call %s: %s\n",
3310 progpath, _dbus_strerror (errno));
3313 if (pipe (errors_pipe) < 0)
3316 "Failed to create a pipe to call %s: %s",
3317 progpath, _dbus_strerror (errno));
3318 _dbus_verbose (
"Failed to create a pipe to call %s: %s\n",
3319 progpath, _dbus_strerror (errno));
3327 "Failed to fork() to call %s: %s",
3328 progpath, _dbus_strerror (errno));
3329 _dbus_verbose (
"Failed to fork() to call %s: %s\n",
3330 progpath, _dbus_strerror (errno));
3339 fd = open (
"/dev/null", O_RDWR);
3344 _dbus_verbose (
"/dev/null fd %d opened\n", fd);
3353 if (dup2 (fd, 0) == -1)
3355 if (dup2 (result_pipe[
WRITE_END], 1) == -1)
3357 if (dup2 (errors_pipe[WRITE_END], 2) == -1)
3362 sigprocmask (SIG_SETMASK, &old_set,
NULL);
3365 if (progpath[0] ==
'/')
3367 execv (progpath, argv);
3376 execvp (strrchr (progpath,
'/')+1, argv);
3379 execvp (progpath, argv);
3386 close (result_pipe[WRITE_END]);
3387 close (errors_pipe[WRITE_END]);
3401 ret = waitpid (pid, &status, 0);
3403 while (ret == -1 && errno == EINTR);
3407 if (!WIFEXITED (status) || WEXITSTATUS (status) != 0 )
3413 _DBUS_SET_OOM (error);
3425 if (_dbus_string_get_length (&error_message) > 0)
3427 "%s terminated abnormally with the following error: %s",
3428 progpath, _dbus_string_get_data (&error_message));
3431 "%s terminated abnormally without any error message",
3439 sigprocmask (SIG_SETMASK, &old_set,
NULL);
3442 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3444 _DBUS_ASSERT_ERROR_IS_SET (error);
3446 if (result_pipe[0] != -1)
3447 close (result_pipe[0]);
3448 if (result_pipe[1] != -1)
3449 close (result_pipe[1]);
3450 if (errors_pipe[0] != -1)
3451 close (errors_pipe[0]);
3452 if (errors_pipe[1] != -1)
3453 close (errors_pipe[1]);
3474 #ifdef DBUS_ENABLE_X11_AUTOLAUNCH
3478 const char *display;
3479 static char *argv[6];
3487 "Unable to autolaunch when setuid");
3491 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3499 if (display ==
NULL || display[0] ==
'\0')
3502 "Unable to autolaunch a dbus-daemon without a $DISPLAY for X11");
3508 _DBUS_SET_OOM (error);
3514 _DBUS_SET_OOM (error);
3519 argv[i] =
"dbus-launch";
3521 argv[i] =
"--autolaunch";
3523 argv[i] = _dbus_string_get_data (&uuid);
3525 argv[i] =
"--binary-syntax";
3527 argv[i] =
"--close-stderr";
3534 retval = _read_subprocess_line_argv (DBUS_BINDIR
"/dbus-launch",
3536 argv, address, error);
3543 "Using X11 for dbus-daemon autolaunch was disabled at compile time, "
3544 "set your DBUS_SESSION_BUS_ADDRESS instead");
3588 #define DBUS_UNIX_STANDARD_SESSION_SERVICEDIR "/dbus-1/services"
3589 #define DBUS_UNIX_STANDARD_SYSTEM_SERVICEDIR "/dbus-1/system-services"
3599 const char *launchd_env_var,
3602 #ifdef DBUS_ENABLE_LAUNCHD
3606 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3611 "Unable to find launchd socket when setuid");
3616 argv[i] =
"launchctl";
3620 argv[i] = (
char*)launchd_env_var;
3627 if (!_read_subprocess_line_argv(argv[0],
TRUE, argv, socket_path, error))
3633 if (_dbus_string_get_length(socket_path) == 0)
3643 "can't lookup socket from launchd; launchd support not compiled in");
3648 #ifdef DBUS_ENABLE_LAUNCHD
3658 "Unable to find launchd socket when setuid");
3664 _DBUS_SET_OOM (error);
3679 "launchd did not provide a socket path, "
3680 "verify that org.freedesktop.dbus-session.plist is loaded!");
3686 _DBUS_SET_OOM (error);
3691 _dbus_string_get_length (address)))
3693 _DBUS_SET_OOM (error);
3727 #ifdef DBUS_ENABLE_LAUNCHD
3729 return _dbus_lookup_session_address_launchd (address, error);
3760 const char *xdg_data_home;
3761 const char *xdg_data_dirs;
3770 if (xdg_data_home !=
NULL)
3794 if (xdg_data_dirs !=
NULL)
3818 DBUS_UNIX_STANDARD_SESSION_SERVICEDIR,
3861 static const char standard_search_path[] =
3871 DBUS_UNIX_STANDARD_SYSTEM_SERVICEDIR,
3947 #ifdef DBUS_BUILD_TESTS
3949 const char *
override;
3952 if (
override !=
NULL && *
override !=
'\0')
3958 _dbus_verbose (
"Using fake homedir for testing: %s\n",
3959 _dbus_string_get_const_data (&homedir));
3964 if (!already_warned)
3966 _dbus_warn (
"Using your real home directory for testing, set DBUS_TEST_HOMEDIR to avoid\n");
3967 already_warned =
TRUE;
3979 directory, _dbus_string_get_length (directory))) {
3993 _dbus_daemon_publish_session_bus_address (
const char* addr,
4001 _dbus_daemon_unpublish_session_bus_address (
void)
4015 return errno == EAGAIN || errno == EWOULDBLOCK;
4029 const char *filename_c;
4031 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
4033 filename_c = _dbus_string_get_const_data (filename);
4035 if (rmdir (filename_c) != 0)
4038 "Failed to remove directory %s: %s\n",
4039 filename_c, _dbus_strerror (errno));
4059 struct sockaddr_storage storage;
4060 struct sockaddr_un un;
4063 socklen_t sa_len =
sizeof(sa_buf);
4067 if (getsockname(fd, &sa_buf.sa, &sa_len) < 0)
4070 return sa_buf.sa.sa_family == AF_UNIX;
4087 _dbus_replace_install_prefix (
const char *configure_time_path)
4089 return configure_time_path;
4107 d = opendir (
"/proc/self/fd");
4117 k = readdir_r (d, &buf, &de);
4121 if (de->d_name[0] ==
'.')
4125 l = strtol (de->d_name, &e, 10);
4126 if (errno != 0 || e ==
NULL || *e !=
'\0')
4133 if (fd == dirfd (d))
4144 maxfds = sysconf (_SC_OPEN_MAX);
4153 for (i = 3; i < maxfds; i++)
4172 #if 0 && defined(HAVE_LIBC_ENABLE_SECURE)
4175 extern int __libc_enable_secure;
4176 return __libc_enable_secure;
4178 #elif defined(HAVE_ISSETUGID)
4180 return issetugid ();
4182 uid_t ruid, euid, suid;
4183 gid_t rgid, egid, sgid;
4188 if (_DBUS_UNLIKELY (!check_setuid_initialised))
4190 #ifdef HAVE_GETRESUID
4191 if (getresuid (&ruid, &euid, &suid) != 0 ||
4192 getresgid (&rgid, &egid, &sgid) != 0)
4195 suid = ruid = getuid ();
4196 sgid = rgid = getgid ();
4201 check_setuid_initialised =
TRUE;
4202 is_setuid = (ruid != euid || ruid != suid ||
4203 rgid != egid || rgid != sgid);
dbus_bool_t _dbus_string_append(DBusString *str, const char *buffer)
Appends a nul-terminated C-style string to a DBusString.
dbus_bool_t _dbus_string_parse_int(const DBusString *str, int start, long *value_return, int *end_return)
Parses an integer contained in a DBusString.
An atomic integer safe to increment or decrement from multiple threads.
dbus_uid_t _dbus_credentials_get_unix_uid(DBusCredentials *credentials)
Gets the UNIX user ID in the credentials, or DBUS_UID_UNSET if the credentials object doesn't contain...
dbus_bool_t _dbus_string_append_uint(DBusString *str, unsigned long value)
Appends an unsigned integer to a DBusString.
dbus_int32_t _dbus_atomic_get(DBusAtomic *atomic)
Atomically get the value of an integer.
#define NULL
A null pointer, defined appropriately for C or C++.
dbus_bool_t _dbus_append_system_config_file(DBusString *str)
Append the absolute path of the system.conf file (there is no system bus on Windows so this can just ...
#define DBUS_ERROR_SPAWN_EXEC_FAILED
While starting a new process, the exec() call failed.
volatile dbus_int32_t value
Value of the atomic integer.
dbus_bool_t _dbus_check_dir_is_private_to_user(DBusString *dir, DBusError *error)
Checks to make sure the given directory is private to the user.
#define _DBUS_POLLHUP
Hung up.
void * dbus_realloc(void *memory, size_t bytes)
Resizes a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
dbus_bool_t _dbus_string_lengthen(DBusString *str, int additional_length)
Makes a string longer by the given number of bytes.
void dbus_free(void *memory)
Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
dbus_bool_t _dbus_delete_directory(const DBusString *filename, DBusError *error)
Removes a directory; Directory must be empty.
dbus_bool_t _dbus_socket_can_pass_unix_fd(int fd)
Checks whether file descriptors may be passed via the socket.
#define _DBUS_POLLNVAL
Invalid request: fd not open.
int _dbus_write(int fd, const DBusString *buffer, int start, int len)
Thin wrapper around the write() system call that writes a part of a DBusString and handles EINTR for ...
#define DBUS_ERROR_NOT_SUPPORTED
Requested operation isn't supported (like ENOSYS on UNIX).
#define dbus_new(type, count)
Safe macro for using dbus_malloc().
#define DBUS_GID_FORMAT
an appropriate printf format for dbus_gid_t
#define DBUS_PID_FORMAT
an appropriate printf format for dbus_pid_t
void _dbus_flush_caches(void)
Called when the bus daemon is signaled to reload its configuration; any caches should be nuked...
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
dbus_bool_t _dbus_full_duplex_pipe(int *fd1, int *fd2, dbus_bool_t blocking, DBusError *error)
Creates a full-duplex pipe (as in socketpair()).
int _dbus_write_socket_two(int fd, const DBusString *buffer1, int start1, int len1, const DBusString *buffer2, int start2, int len2)
Like _dbus_write_two() but only works on sockets and is thus available on Windows.
dbus_bool_t _dbus_check_setuid(void)
NOTE: If you modify this function, please also consider making the corresponding change in GLib...
void _dbus_user_database_flush_system(void)
Flushes the system global user database;.
void dbus_error_free(DBusError *error)
Frees an error that's been set (or just initialized), then reinitializes the error as in dbus_error_i...
dbus_bool_t _dbus_get_standard_session_servicedirs(DBusList **dirs)
Returns the standard directories for a session bus to look for service activation files...
dbus_gid_t primary_gid
GID.
#define _DBUS_POLLPRI
There is urgent data to read.
int _dbus_read_socket_with_unix_fds(int fd, DBusString *buffer, int count, int *fds, int *n_fds)
Like _dbus_read_socket() but also tries to read unix fds from the socket.
A portable struct pollfd wrapper.
A globally unique ID ; we have one for each DBusServer, and also one for each machine with libdbus in...
int _dbus_accept(int listen_fd)
Accepts a connection on a listening socket.
int _dbus_dup(int fd, DBusError *error)
Duplicates a file descriptor.
#define _DBUS_POLLIN
There is data to read.
char * _dbus_string_get_data_len(DBusString *str, int start, int len)
Gets a sub-portion of the raw character buffer from the string.
dbus_bool_t _dbus_string_init(DBusString *str)
Initializes a string.
dbus_pid_t _dbus_getpid(void)
Gets our process ID.
dbus_bool_t _dbus_append_user_from_current_process(DBusString *str)
Append to the string the identity we would like to have when we authenticate, on UNIX this is the cur...
#define DBUS_ERROR_IO_ERROR
Something went wrong reading or writing to a socket, for example.
void _dbus_string_shorten(DBusString *str, int length_to_remove)
Makes a string shorter by the given number of bytes.
short events
Events to poll for.
dbus_bool_t _dbus_string_copy(const DBusString *source, int start, DBusString *dest, int insert_at)
Like _dbus_string_move(), but does not delete the section of the source string that's copied to the d...
dbus_bool_t _dbus_read_credentials_socket(int client_fd, DBusCredentials *credentials, DBusError *error)
Reads a single byte which must be nul (an error occurs otherwise), and reads unix credentials if avai...
#define DBUS_PID_UNSET
an invalid PID used to represent an uninitialized dbus_pid_t field
void _dbus_credentials_clear(DBusCredentials *credentials)
Clear all credentials in the object.
#define DBUS_UID_UNSET
an invalid UID used to represent an uninitialized dbus_uid_t field
dbus_bool_t _dbus_parse_uid(const DBusString *uid_str, dbus_uid_t *uid)
Gets a UID from a UID string.
const char * _dbus_getenv(const char *varname)
Wrapper for getenv().
dbus_bool_t _dbus_get_local_machine_uuid_encoded(DBusString *uuid_str)
Gets the hex-encoded UUID of the machine this function is executed on.
dbus_bool_t _dbus_get_autolaunch_address(const char *scope, DBusString *address, DBusError *error)
Returns the address of a new session bus.
const char * _dbus_error_from_errno(int error_number)
Converts a UNIX errno, or Windows errno or WinSock error value into a DBusError name.
dbus_bool_t _dbus_user_info_fill(DBusUserInfo *info, const DBusString *username, DBusError *error)
Gets user info for the given username.
dbus_bool_t _dbus_homedir_from_uid(dbus_uid_t uid, DBusString *homedir)
Gets the home directory for the given user.
void _dbus_get_monotonic_time(long *tv_sec, long *tv_usec)
Get current time, as in gettimeofday().
unsigned long dbus_pid_t
A process ID.
dbus_gid_t * group_ids
Groups IDs, including above primary group.
dbus_int32_t _dbus_atomic_dec(DBusAtomic *atomic)
Atomically decrement an integer.
void _dbus_fd_set_close_on_exec(intptr_t fd)
Sets the file descriptor to be close on exec.
dbus_bool_t _dbus_lookup_launchd_socket(DBusString *socket_path, const char *launchd_env_var, DBusError *error)
quries launchd for a specific env var which holds the socket path.
void _dbus_get_real_time(long *tv_sec, long *tv_usec)
Get current time, as in gettimeofday().
void * dbus_malloc(size_t bytes)
Allocates the given number of bytes, as with standard malloc().
dbus_bool_t _dbus_concat_dir_and_file(DBusString *dir, const DBusString *next_component)
Appends the given filename to the given directory.
void _dbus_close_all(void)
Closes all file descriptors except the first three (i.e.
dbus_bool_t _dbus_credentials_are_anonymous(DBusCredentials *credentials)
Checks whether a credentials object contains a user identity.
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
void _dbus_string_init_const(DBusString *str, const char *value)
Initializes a constant string.
int n_group_ids
Size of group IDs array.
int _dbus_poll(DBusPollFD *fds, int n_fds, int timeout_milliseconds)
Wrapper for poll().
#define _DBUS_POLLOUT
Writing now will not block.
void _dbus_warn(const char *format,...)
Prints a warning message to stderr.
dbus_bool_t _dbus_append_keyring_directory_for_credentials(DBusString *directory, DBusCredentials *credentials)
Appends the directory in which a keyring for the given credentials should be stored.
int _dbus_read_socket(int fd, DBusString *buffer, int count)
Like _dbus_read(), but only works on sockets so is available on Windows.
Object representing an exception.
void _dbus_disable_sigpipe(void)
signal (SIGPIPE, SIG_IGN);
dbus_bool_t _dbus_send_credentials_socket(int server_fd, DBusError *error)
Sends a single nul byte with our UNIX credentials as ancillary data.
#define DBUS_ERROR_BAD_ADDRESS
A D-Bus bus address was malformed.
void dbus_set_error(DBusError *error, const char *name, const char *format,...)
Assigns an error name and message to a DBusError.
dbus_bool_t _dbus_credentials_add_adt_audit_data(DBusCredentials *credentials, void *audit_data, dbus_int32_t size)
Add ADT audit data to the credentials.
dbus_int32_t _dbus_atomic_inc(DBusAtomic *atomic)
Atomically increments an integer.
#define _DBUS_N_ELEMENTS(array)
Computes the number of elements in a fixed-size array using sizeof().
dbus_bool_t _dbus_close(int fd, DBusError *error)
Closes a file descriptor.
dbus_bool_t _dbus_create_directory(const DBusString *filename, DBusError *error)
Creates a directory; succeeds if the directory is created or already existed.
int _dbus_connect_exec(const char *path, char *const argv[], DBusError *error)
Creates a UNIX domain socket and connects it to the specified process to execute. ...
dbus_bool_t _dbus_string_append_byte(DBusString *str, unsigned char byte)
Appends a single byte to the string, returning FALSE if not enough memory.
#define _DBUS_UNLOCK(name)
Unlocks a global lock.
void _dbus_string_free(DBusString *str)
Frees a string created by _dbus_string_init().
#define DBUS_GID_UNSET
an invalid GID used to represent an uninitialized dbus_gid_t field
dbus_bool_t _dbus_credentials_add_from_current_process(DBusCredentials *credentials)
Adds the credentials of the current process to the passed-in credentials object.
#define TRUE
Expands to "1".
#define DBUS_ERROR_FAILED
A generic error; "something went wrong" - see the error message for more.
#define READ_END
Helps remember which end of the pipe is which.
#define DBUS_UID_FORMAT
an appropriate printf format for dbus_uid_t
dbus_bool_t _dbus_read_uuid_file(const DBusString *filename, DBusGUID *uuid, dbus_bool_t create_if_not_found, DBusError *error)
Reads (and optionally writes) a uuid to a file.
char * homedir
Home directory.
dbus_uid_t _dbus_getuid(void)
Gets our UID.
const char * _dbus_get_tmpdir(void)
Gets the temporary files directory by inspecting the environment variables TMPDIR, TMP, and TEMP in that order.
#define _DBUS_DEFINE_GLOBAL_LOCK(name)
Defines a global lock variable with the given name.
dbus_bool_t _dbus_homedir_from_current_process(const DBusString **homedir)
Gets homedir of user owning current process.
unsigned long _dbus_pid_for_log(void)
The only reason this is separate from _dbus_getpid() is to allow it on Windows for logging but not fo...
void _dbus_generate_pseudorandom_bytes_buffer(char *buffer, int n_bytes)
Random numbers.
int _dbus_write_socket(int fd, const DBusString *buffer, int start, int len)
Like _dbus_write(), but only supports sockets and is thus available on Windows.
void _dbus_exit(int code)
Exit the process, returning the given value.
dbus_bool_t _dbus_split_paths_and_append(DBusString *dirs, const char *suffix, DBusList **dir_list)
Split paths into a list of char strings.
dbus_bool_t _dbus_get_is_errno_eagain_or_ewouldblock(void)
See if errno is EAGAIN or EWOULDBLOCK (this has to be done differently for Winsock so is abstracted) ...
dbus_bool_t _dbus_user_info_fill_uid(DBusUserInfo *info, dbus_uid_t uid, DBusError *error)
Gets user info for the given user ID.
#define DBUS_ERROR_NO_MEMORY
There was not enough memory to complete an operation.
dbus_bool_t _dbus_lookup_session_address(dbus_bool_t *supported, DBusString *address, DBusError *error)
Determines the address of the session bus by querying a platform-specific method. ...
dbus_bool_t _dbus_credentials_add_unix_pid(DBusCredentials *credentials, dbus_pid_t pid)
Add a UNIX process ID to the credentials.
#define FALSE
Expands to "0".
dbus_bool_t _dbus_read_local_machine_uuid(DBusGUID *machine_id, dbus_bool_t create_if_not_found, DBusError *error)
Reads the uuid of the machine we're running on from the dbus configuration.
void _dbus_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.
int _dbus_write_two(int fd, const DBusString *buffer1, int start1, int len1, const DBusString *buffer2, int start2, int len2)
Like _dbus_write() but will use writev() if possible to write both buffers in sequence.
int _dbus_printf_string_upper_bound(const char *format, va_list args)
Measure the length of the given format string and arguments, not including the terminating nul...
void _dbus_verbose_bytes_of_string(const DBusString *str, int start, int len)
Dump the given part of the string to verbose log.
dbus_uid_t _dbus_geteuid(void)
Gets our effective UID.
#define WRITE_END
Helps remember which end of the pipe is which.
unsigned long dbus_gid_t
A group ID.
char * _dbus_strdup(const char *str)
Duplicates a string.
dbus_bool_t _dbus_close_socket(int fd, DBusError *error)
Closes a socket.
#define _DBUS_ZERO(object)
Sets all bits in an object to zero.
dbus_bool_t _dbus_credentials_add_unix_uid(DBusCredentials *credentials, dbus_uid_t uid)
Add a UNIX user ID to the credentials.
dbus_bool_t _dbus_append_session_config_file(DBusString *str)
Append the absolute path of the session.conf file.
unsigned long dbus_uid_t
A user ID.
short revents
Events that occurred.
int _dbus_connect_unix_socket(const char *path, dbus_bool_t abstract, DBusError *error)
Creates a socket and connects it to the UNIX domain socket at the given path.
dbus_bool_t _dbus_get_standard_system_servicedirs(DBusList **dirs)
Returns the standard directories for a system bus to look for service activation files.
void _dbus_sleep_milliseconds(int milliseconds)
Sleeps the given number of milliseconds.
int _dbus_read(int fd, DBusString *buffer, int count)
Thin wrapper around the read() system call that appends the data it reads to the DBusString buffer...
dbus_bool_t dbus_error_is_set(const DBusError *error)
Checks whether an error occurred (the error is set).
int _dbus_listen_unix_socket(const char *path, dbus_bool_t abstract, DBusError *error)
Creates a socket and binds it to the given path, then listens on the socket.
int _dbus_connect_tcp_socket(const char *host, const char *port, const char *family, DBusError *error)
Creates a socket and connects to a socket at the given host and port.
int _dbus_listen_systemd_sockets(int **fds, DBusError *error)
Acquires one or more sockets passed in from systemd.
int _dbus_listen_tcp_socket(const char *host, const char *port, const char *family, DBusString *retport, int **fds_p, DBusError *error)
Creates a socket and binds it to the given path, then listens on the socket.
dbus_bool_t _dbus_generate_random_bytes(DBusString *str, int n_bytes)
Generates the given number of random bytes, using the best mechanism we can come up with...
Information about a UNIX user.
#define _DBUS_POLLERR
Error condition.