1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2013 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
34 #include "sd-daemon.h"
37 #include "bus-socket.h"
38 #include "bus-internal.h"
39 #include "bus-message.h"
41 #define SNDBUF_SIZE (8*1024*1024)
43 static void iovec_advance(struct iovec iov[], unsigned *idx, size_t size) {
46 struct iovec *i = iov + *idx;
48 if (i->iov_len > size) {
49 i->iov_base = (uint8_t*) i->iov_base + size;
63 static int append_iovec(sd_bus_message *m, const void *p, size_t sz) {
68 m->iovec[m->n_iovec].iov_base = (void*) p;
69 m->iovec[m->n_iovec].iov_len = sz;
75 static int bus_message_setup_iovec(sd_bus_message *m) {
76 struct bus_body_part *part;
88 n = 1 + m->n_body_parts;
89 if (n < ELEMENTSOF(m->iovec_fixed))
90 m->iovec = m->iovec_fixed;
92 m->iovec = new(struct iovec, n);
99 r = append_iovec(m, m->header, BUS_MESSAGE_BODY_BEGIN(m));
103 MESSAGE_FOREACH_PART(part, i, m) {
104 r = bus_body_part_map(part);
108 r = append_iovec(m, part->data, part->size);
113 assert(n == m->n_iovec);
122 bool bus_socket_auth_needs_write(sd_bus *b) {
126 if (b->auth_index >= ELEMENTSOF(b->auth_iovec))
129 for (i = b->auth_index; i < ELEMENTSOF(b->auth_iovec); i++) {
130 struct iovec *j = b->auth_iovec + i;
139 static int bus_socket_write_auth(sd_bus *b) {
143 assert(b->state == BUS_AUTHENTICATING);
145 if (!bus_socket_auth_needs_write(b))
148 if (b->prefer_writev)
149 k = writev(b->output_fd, b->auth_iovec + b->auth_index, ELEMENTSOF(b->auth_iovec) - b->auth_index);
154 mh.msg_iov = b->auth_iovec + b->auth_index;
155 mh.msg_iovlen = ELEMENTSOF(b->auth_iovec) - b->auth_index;
157 k = sendmsg(b->output_fd, &mh, MSG_DONTWAIT|MSG_NOSIGNAL);
158 if (k < 0 && errno == ENOTSOCK) {
159 b->prefer_writev = true;
160 k = writev(b->output_fd, b->auth_iovec + b->auth_index, ELEMENTSOF(b->auth_iovec) - b->auth_index);
165 return errno == EAGAIN ? 0 : -errno;
167 iovec_advance(b->auth_iovec, &b->auth_index, (size_t) k);
171 static int bus_socket_auth_verify_client(sd_bus *b) {
179 /* We expect two response lines: "OK" and possibly
182 e = memmem(b->rbuffer, b->rbuffer_size, "\r\n", 2);
186 if (b->hello_flags & KDBUS_HELLO_ACCEPT_FD) {
187 f = memmem(e + 2, b->rbuffer_size - (e - (char*) b->rbuffer) - 2, "\r\n", 2);
197 /* Nice! We got all the lines we need. First check the OK
200 if (e - (char*) b->rbuffer != 3 + 32)
203 if (memcmp(b->rbuffer, "OK ", 3))
206 b->auth = b->anonymous_auth ? BUS_AUTH_ANONYMOUS : BUS_AUTH_EXTERNAL;
208 for (i = 0; i < 32; i += 2) {
211 x = unhexchar(((char*) b->rbuffer)[3 + i]);
212 y = unhexchar(((char*) b->rbuffer)[3 + i + 1]);
217 peer.bytes[i/2] = ((uint8_t) x << 4 | (uint8_t) y);
220 if (!sd_id128_equal(b->server_id, SD_ID128_NULL) &&
221 !sd_id128_equal(b->server_id, peer))
226 /* And possibly check the second line, too */
230 (f - e == sizeof("\r\nAGREE_UNIX_FD") - 1) &&
231 memcmp(e + 2, "AGREE_UNIX_FD", sizeof("AGREE_UNIX_FD") - 1) == 0;
233 b->rbuffer_size -= (start - (char*) b->rbuffer);
234 memmove(b->rbuffer, start, b->rbuffer_size);
236 r = bus_start_running(b);
243 static bool line_equals(const char *s, size_t m, const char *line) {
250 return memcmp(s, line, l) == 0;
253 static bool line_begins(const char *s, size_t m, const char *word) {
260 if (memcmp(s, word, l) != 0)
263 return m == l || (m > l && s[l] == ' ');
266 static int verify_anonymous_token(sd_bus *b, const char *p, size_t l) {
267 _cleanup_free_ char *token = NULL;
269 if (!b->anonymous_auth)
280 token = unhexmem(p, l);
284 if (memchr(token, 0, l/2))
287 return !!utf8_is_valid(token);
290 static int verify_external_token(sd_bus *b, const char *p, size_t l) {
291 _cleanup_free_ char *token = NULL;
295 /* We don't do any real authentication here. Instead, we if
296 * the owner of this bus wanted authentication he should have
297 * checked SO_PEERCRED before even creating the bus object. */
299 if (!b->anonymous_auth && !b->ucred_valid)
311 token = unhexmem(p, l);
315 if (memchr(token, 0, l/2))
318 r = parse_uid(token, &u);
322 /* We ignore the passed value if anonymous authentication is
324 if (!b->anonymous_auth && u != b->ucred.uid)
330 static int bus_socket_auth_write(sd_bus *b, const char *t) {
337 /* We only make use of the first iovec */
338 assert(b->auth_index == 0 || b->auth_index == 1);
341 p = malloc(b->auth_iovec[0].iov_len + l);
345 memcpy(p, b->auth_iovec[0].iov_base, b->auth_iovec[0].iov_len);
346 memcpy(p + b->auth_iovec[0].iov_len, t, l);
348 b->auth_iovec[0].iov_base = p;
349 b->auth_iovec[0].iov_len += l;
351 free(b->auth_buffer);
357 static int bus_socket_auth_write_ok(sd_bus *b) {
358 char t[3 + 32 + 2 + 1];
362 snprintf(t, sizeof(t), "OK " SD_ID128_FORMAT_STR "\r\n", SD_ID128_FORMAT_VAL(b->server_id));
365 return bus_socket_auth_write(b, t);
368 static int bus_socket_auth_verify_server(sd_bus *b) {
372 bool processed = false;
377 if (b->rbuffer_size < 1)
380 /* First char must be a NUL byte */
381 if (*(char*) b->rbuffer != 0)
384 if (b->rbuffer_size < 3)
387 /* Begin with the first line */
388 if (b->auth_rbegin <= 0)
392 /* Check if line is complete */
393 line = (char*) b->rbuffer + b->auth_rbegin;
394 e = memmem(line, b->rbuffer_size - b->auth_rbegin, "\r\n", 2);
400 if (line_begins(line, l, "AUTH ANONYMOUS")) {
402 r = verify_anonymous_token(b, line + 14, l - 14);
406 r = bus_socket_auth_write(b, "REJECTED\r\n");
408 b->auth = BUS_AUTH_ANONYMOUS;
409 r = bus_socket_auth_write_ok(b);
412 } else if (line_begins(line, l, "AUTH EXTERNAL")) {
414 r = verify_external_token(b, line + 13, l - 13);
418 r = bus_socket_auth_write(b, "REJECTED\r\n");
420 b->auth = BUS_AUTH_EXTERNAL;
421 r = bus_socket_auth_write_ok(b);
424 } else if (line_begins(line, l, "AUTH"))
425 r = bus_socket_auth_write(b, "REJECTED EXTERNAL ANONYMOUS\r\n");
426 else if (line_equals(line, l, "CANCEL") ||
427 line_begins(line, l, "ERROR")) {
429 b->auth = _BUS_AUTH_INVALID;
430 r = bus_socket_auth_write(b, "REJECTED\r\n");
432 } else if (line_equals(line, l, "BEGIN")) {
434 if (b->auth == _BUS_AUTH_INVALID)
435 r = bus_socket_auth_write(b, "ERROR\r\n");
437 /* We can't leave from the auth phase
438 * before we haven't written
439 * everything queued, so let's check
442 if (bus_socket_auth_needs_write(b))
445 b->rbuffer_size -= (e + 2 - (char*) b->rbuffer);
446 memmove(b->rbuffer, e + 2, b->rbuffer_size);
447 return bus_start_running(b);
450 } else if (line_begins(line, l, "DATA")) {
452 if (b->auth == _BUS_AUTH_INVALID)
453 r = bus_socket_auth_write(b, "ERROR\r\n");
455 if (b->auth == BUS_AUTH_ANONYMOUS)
456 r = verify_anonymous_token(b, line + 4, l - 4);
458 r = verify_external_token(b, line + 4, l - 4);
463 b->auth = _BUS_AUTH_INVALID;
464 r = bus_socket_auth_write(b, "REJECTED\r\n");
466 r = bus_socket_auth_write_ok(b);
468 } else if (line_equals(line, l, "NEGOTIATE_UNIX_FD")) {
469 if (b->auth == _BUS_AUTH_INVALID || !(b->hello_flags & KDBUS_HELLO_ACCEPT_FD))
470 r = bus_socket_auth_write(b, "ERROR\r\n");
473 r = bus_socket_auth_write(b, "AGREE_UNIX_FD\r\n");
476 r = bus_socket_auth_write(b, "ERROR\r\n");
481 b->auth_rbegin = e + 2 - (char*) b->rbuffer;
487 static int bus_socket_auth_verify(sd_bus *b) {
491 return bus_socket_auth_verify_server(b);
493 return bus_socket_auth_verify_client(b);
496 static int bus_socket_read_auth(sd_bus *b) {
504 struct cmsghdr cmsghdr;
505 uint8_t buf[CMSG_SPACE(sizeof(int) * BUS_FDS_MAX) +
506 CMSG_SPACE(sizeof(struct ucred)) +
507 CMSG_SPACE(NAME_MAX)]; /*selinux label */
509 struct cmsghdr *cmsg;
510 bool handle_cmsg = false;
513 assert(b->state == BUS_AUTHENTICATING);
515 r = bus_socket_auth_verify(b);
519 n = MAX(256u, b->rbuffer_size * 2);
521 if (n > BUS_AUTH_SIZE_MAX)
522 n = BUS_AUTH_SIZE_MAX;
524 if (b->rbuffer_size >= n)
527 p = realloc(b->rbuffer, n);
534 iov.iov_base = (uint8_t*) b->rbuffer + b->rbuffer_size;
535 iov.iov_len = n - b->rbuffer_size;
538 k = readv(b->input_fd, &iov, 1);
543 mh.msg_control = &control;
544 mh.msg_controllen = sizeof(control);
546 k = recvmsg(b->input_fd, &mh, MSG_DONTWAIT|MSG_NOSIGNAL|MSG_CMSG_CLOEXEC);
547 if (k < 0 && errno == ENOTSOCK) {
548 b->prefer_readv = true;
549 k = readv(b->input_fd, &iov, 1);
554 return errno == EAGAIN ? 0 : -errno;
558 b->rbuffer_size += k;
561 for (cmsg = CMSG_FIRSTHDR(&mh); cmsg; cmsg = CMSG_NXTHDR(&mh, cmsg)) {
562 if (cmsg->cmsg_level == SOL_SOCKET &&
563 cmsg->cmsg_type == SCM_RIGHTS) {
566 /* Whut? We received fds during the auth
567 * protocol? Somebody is playing games with
568 * us. Close them all, and fail */
569 j = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
570 close_many((int*) CMSG_DATA(cmsg), j);
573 } else if (cmsg->cmsg_level == SOL_SOCKET &&
574 cmsg->cmsg_type == SCM_CREDENTIALS &&
575 cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) {
577 /* Ignore bogus data, which we might
578 * get on socketpair() sockets */
579 if (((struct ucred*) CMSG_DATA(cmsg))->pid != 0) {
580 memcpy(&b->ucred, CMSG_DATA(cmsg), sizeof(struct ucred));
581 b->ucred_valid = true;
584 } else if (cmsg->cmsg_level == SOL_SOCKET &&
585 cmsg->cmsg_type == SCM_SECURITY) {
589 l = cmsg->cmsg_len - CMSG_LEN(0);
591 memcpy(&b->label, CMSG_DATA(cmsg), l);
598 r = bus_socket_auth_verify(b);
605 void bus_socket_setup(sd_bus *b) {
610 /* Enable SO_PASSCRED + SO_PASSEC. We try this on any
611 * socket, just in case. */
612 enable = !b->bus_client;
613 setsockopt(b->input_fd, SOL_SOCKET, SO_PASSCRED, &enable, sizeof(enable));
615 enable = !b->bus_client && (b->attach_flags & KDBUS_ATTACH_SECLABEL);
616 setsockopt(b->input_fd, SOL_SOCKET, SO_PASSSEC, &enable, sizeof(enable));
618 /* Increase the buffers to 8 MB */
619 fd_inc_rcvbuf(b->input_fd, SNDBUF_SIZE);
620 fd_inc_sndbuf(b->output_fd, SNDBUF_SIZE);
622 b->is_kernel = false;
623 b->message_version = 1;
624 b->message_endian = 0;
627 static void bus_get_peercred(sd_bus *b) {
630 /* Get the peer for socketpair() sockets */
631 b->ucred_valid = getpeercred(b->input_fd, &b->ucred) >= 0;
634 static int bus_socket_start_auth_client(sd_bus *b) {
636 const char *auth_suffix, *auth_prefix;
640 if (b->anonymous_auth) {
641 auth_prefix = "\0AUTH ANONYMOUS ";
643 /* For ANONYMOUS auth we send some arbitrary "trace" string */
645 b->auth_buffer = hexmem("anonymous", l);
647 char text[20 + 1]; /* enough space for a 64bit integer plus NUL */
649 auth_prefix = "\0AUTH EXTERNAL ";
651 snprintf(text, sizeof(text), "%lu", (unsigned long) geteuid());
655 b->auth_buffer = hexmem(text, l);
661 if (b->hello_flags & KDBUS_HELLO_ACCEPT_FD)
662 auth_suffix = "\r\nNEGOTIATE_UNIX_FD\r\nBEGIN\r\n";
664 auth_suffix = "\r\nBEGIN\r\n";
666 b->auth_iovec[0].iov_base = (void*) auth_prefix;
667 b->auth_iovec[0].iov_len = 1 + strlen(auth_prefix + 1);
668 b->auth_iovec[1].iov_base = (void*) b->auth_buffer;
669 b->auth_iovec[1].iov_len = l * 2;
670 b->auth_iovec[2].iov_base = (void*) auth_suffix;
671 b->auth_iovec[2].iov_len = strlen(auth_suffix);
673 return bus_socket_write_auth(b);
676 int bus_socket_start_auth(sd_bus *b) {
681 b->state = BUS_AUTHENTICATING;
682 b->auth_timeout = now(CLOCK_MONOTONIC) + BUS_DEFAULT_TIMEOUT;
684 if (sd_is_socket(b->input_fd, AF_UNIX, 0, 0) <= 0)
685 b->hello_flags &= ~KDBUS_HELLO_ACCEPT_FD;
687 if (b->output_fd != b->input_fd)
688 if (sd_is_socket(b->output_fd, AF_UNIX, 0, 0) <= 0)
689 b->hello_flags &= ~KDBUS_HELLO_ACCEPT_FD;
692 return bus_socket_read_auth(b);
694 return bus_socket_start_auth_client(b);
697 int bus_socket_connect(sd_bus *b) {
701 assert(b->input_fd < 0);
702 assert(b->output_fd < 0);
703 assert(b->sockaddr.sa.sa_family != AF_UNSPEC);
705 b->input_fd = socket(b->sockaddr.sa.sa_family, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
709 b->output_fd = b->input_fd;
713 r = connect(b->input_fd, &b->sockaddr.sa, b->sockaddr_size);
715 if (errno == EINPROGRESS)
721 return bus_socket_start_auth(b);
724 int bus_socket_exec(sd_bus *b) {
729 assert(b->input_fd < 0);
730 assert(b->output_fd < 0);
731 assert(b->exec_path);
733 r = socketpair(AF_UNIX, SOCK_STREAM|SOCK_NONBLOCK|SOCK_CLOEXEC, 0, s);
745 reset_all_signal_handlers();
747 close_all_fds(s+1, 1);
749 assert_se(dup3(s[1], STDIN_FILENO, 0) == STDIN_FILENO);
750 assert_se(dup3(s[1], STDOUT_FILENO, 0) == STDOUT_FILENO);
752 if (s[1] != STDIN_FILENO && s[1] != STDOUT_FILENO)
753 close_nointr_nofail(s[1]);
755 fd_cloexec(STDIN_FILENO, false);
756 fd_cloexec(STDOUT_FILENO, false);
757 fd_nonblock(STDIN_FILENO, false);
758 fd_nonblock(STDOUT_FILENO, false);
761 execvp(b->exec_path, b->exec_argv);
763 const char *argv[] = { b->exec_path, NULL };
764 execvp(b->exec_path, (char**) argv);
770 close_nointr_nofail(s[1]);
771 b->output_fd = b->input_fd = s[0];
775 return bus_socket_start_auth(b);
778 int bus_socket_take_fd(sd_bus *b) {
783 return bus_socket_start_auth(b);
786 int bus_socket_write_message(sd_bus *bus, sd_bus_message *m, size_t *idx) {
796 assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO);
798 if (*idx >= BUS_MESSAGE_SIZE(m))
801 r = bus_message_setup_iovec(m);
805 n = m->n_iovec * sizeof(struct iovec);
807 memcpy(iov, m->iovec, n);
810 iovec_advance(iov, &j, *idx);
812 if (bus->prefer_writev)
813 k = writev(bus->output_fd, iov, m->n_iovec);
819 struct cmsghdr *control;
820 control = alloca(CMSG_SPACE(sizeof(int) * m->n_fds));
822 mh.msg_control = control;
823 control->cmsg_level = SOL_SOCKET;
824 control->cmsg_type = SCM_RIGHTS;
825 mh.msg_controllen = control->cmsg_len = CMSG_LEN(sizeof(int) * m->n_fds);
826 memcpy(CMSG_DATA(control), m->fds, sizeof(int) * m->n_fds);
830 mh.msg_iovlen = m->n_iovec;
832 k = sendmsg(bus->output_fd, &mh, MSG_DONTWAIT|MSG_NOSIGNAL);
833 if (k < 0 && errno == ENOTSOCK) {
834 bus->prefer_writev = true;
835 k = writev(bus->output_fd, iov, m->n_iovec);
840 return errno == EAGAIN ? 0 : -errno;
846 static int bus_socket_read_message_need(sd_bus *bus, size_t *need) {
853 assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO);
855 if (bus->rbuffer_size < sizeof(struct bus_header)) {
856 *need = sizeof(struct bus_header) + 8;
858 /* Minimum message size:
862 * Method Call: +2 string headers
863 * Signal: +3 string headers
864 * Method Error: +1 string headers
866 * Method Reply: +1 uint32 headers
868 * A string header is at least 9 bytes
869 * A uint32 header is at least 8 bytes
871 * Hence the minimum message size of a valid message
872 * is header + 8 bytes */
877 a = ((const uint32_t*) bus->rbuffer)[1];
878 b = ((const uint32_t*) bus->rbuffer)[3];
880 e = ((const uint8_t*) bus->rbuffer)[0];
881 if (e == BUS_LITTLE_ENDIAN) {
884 } else if (e == BUS_BIG_ENDIAN) {
890 sum = (uint64_t) sizeof(struct bus_header) + (uint64_t) ALIGN_TO(b, 8) + (uint64_t) a;
891 if (sum >= BUS_MESSAGE_SIZE_MAX)
894 *need = (size_t) sum;
898 static int bus_socket_make_message(sd_bus *bus, size_t size) {
904 assert(bus->rbuffer_size >= size);
905 assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO);
907 r = bus_rqueue_make_room(bus);
911 if (bus->rbuffer_size > size) {
912 b = memdup((const uint8_t*) bus->rbuffer + size,
913 bus->rbuffer_size - size);
919 r = bus_message_from_malloc(bus,
921 bus->fds, bus->n_fds,
922 !bus->bus_client && bus->ucred_valid ? &bus->ucred : NULL,
923 !bus->bus_client && bus->label[0] ? bus->label : NULL,
931 bus->rbuffer_size -= size;
936 bus->rqueue[bus->rqueue_size++] = t;
941 int bus_socket_read_message(sd_bus *bus) {
949 struct cmsghdr cmsghdr;
950 uint8_t buf[CMSG_SPACE(sizeof(int) * BUS_FDS_MAX) +
951 CMSG_SPACE(sizeof(struct ucred)) +
952 CMSG_SPACE(NAME_MAX)]; /*selinux label */
954 struct cmsghdr *cmsg;
955 bool handle_cmsg = false;
958 assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO);
960 r = bus_socket_read_message_need(bus, &need);
964 if (bus->rbuffer_size >= need)
965 return bus_socket_make_message(bus, need);
967 b = realloc(bus->rbuffer, need);
974 iov.iov_base = (uint8_t*) bus->rbuffer + bus->rbuffer_size;
975 iov.iov_len = need - bus->rbuffer_size;
977 if (bus->prefer_readv)
978 k = readv(bus->input_fd, &iov, 1);
983 mh.msg_control = &control;
984 mh.msg_controllen = sizeof(control);
986 k = recvmsg(bus->input_fd, &mh, MSG_DONTWAIT|MSG_NOSIGNAL|MSG_CMSG_CLOEXEC);
987 if (k < 0 && errno == ENOTSOCK) {
988 bus->prefer_readv = true;
989 k = readv(bus->input_fd, &iov, 1);
994 return errno == EAGAIN ? 0 : -errno;
998 bus->rbuffer_size += k;
1001 for (cmsg = CMSG_FIRSTHDR(&mh); cmsg; cmsg = CMSG_NXTHDR(&mh, cmsg)) {
1002 if (cmsg->cmsg_level == SOL_SOCKET &&
1003 cmsg->cmsg_type == SCM_RIGHTS) {
1006 n = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
1008 if (!bus->can_fds) {
1009 /* Whut? We received fds but this
1010 * isn't actually enabled? Close them,
1013 close_many((int*) CMSG_DATA(cmsg), n);
1017 f = realloc(bus->fds, sizeof(int) + (bus->n_fds + n));
1019 close_many((int*) CMSG_DATA(cmsg), n);
1023 memcpy(f + bus->n_fds, CMSG_DATA(cmsg), n * sizeof(int));
1026 } else if (cmsg->cmsg_level == SOL_SOCKET &&
1027 cmsg->cmsg_type == SCM_CREDENTIALS &&
1028 cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) {
1030 /* Ignore bogus data, which we might
1031 * get on socketpair() sockets */
1032 if (((struct ucred*) CMSG_DATA(cmsg))->pid != 0) {
1033 memcpy(&bus->ucred, CMSG_DATA(cmsg), sizeof(struct ucred));
1034 bus->ucred_valid = true;
1037 } else if (cmsg->cmsg_level == SOL_SOCKET &&
1038 cmsg->cmsg_type == SCM_SECURITY) {
1041 l = cmsg->cmsg_len - CMSG_LEN(0);
1043 memcpy(&bus->label, CMSG_DATA(cmsg), l);
1050 r = bus_socket_read_message_need(bus, &need);
1054 if (bus->rbuffer_size >= need)
1055 return bus_socket_make_message(bus, need);
1060 int bus_socket_process_opening(sd_bus *b) {
1062 socklen_t slen = sizeof(error);
1069 assert(b->state == BUS_OPENING);
1075 if (!(p.revents & (POLLOUT|POLLERR|POLLHUP)))
1078 r = getsockopt(b->output_fd, SOL_SOCKET, SO_ERROR, &error, &slen);
1080 b->last_connect_error = errno;
1081 else if (error != 0)
1082 b->last_connect_error = error;
1083 else if (p.revents & (POLLERR|POLLHUP))
1084 b->last_connect_error = ECONNREFUSED;
1086 return bus_socket_start_auth(b);
1088 return bus_next_address(b);
1091 int bus_socket_process_authenticating(sd_bus *b) {
1095 assert(b->state == BUS_AUTHENTICATING);
1097 if (now(CLOCK_MONOTONIC) >= b->auth_timeout)
1100 r = bus_socket_write_auth(b);
1104 return bus_socket_read_auth(b);