- if (s->forward_to_syslog)
- forward_syslog(s, priority, identifier, message, ucred, tv);
-
- if (s->forward_to_kmsg)
- forward_kmsg(s, priority, identifier, message, ucred);
-
- if (s->forward_to_console)
- forward_console(s, identifier, message, ucred);
- }
-
- dispatch_message(s, iovec, n, m, ucred, tv, label, label_len, priority);
-
-finish:
- for (j = 0; j < n; j++) {
- if (j == tn)
- continue;
-
- if (iovec[j].iov_base < buffer ||
- (const uint8_t*) iovec[j].iov_base >= (const uint8_t*) buffer + buffer_size)
- free(iovec[j].iov_base);
- }
-
- free(iovec);
- free(identifier);
- free(message);
-}
-
-static void process_native_file(
- Server *s,
- int fd,
- struct ucred *ucred,
- struct timeval *tv,
- const char *label, size_t label_len) {
-
- struct stat st;
- void *p;
- ssize_t n;
-
- assert(s);
- assert(fd >= 0);
-
- /* Data is in the passed file, since it didn't fit in a
- * datagram. We can't map the file here, since clients might
- * then truncate it and trigger a SIGBUS for us. So let's
- * stupidly read it */
-
- if (fstat(fd, &st) < 0) {
- log_error("Failed to stat passed file, ignoring: %m");
- return;
- }
-
- if (!S_ISREG(st.st_mode)) {
- log_error("File passed is not regular. Ignoring.");
- return;
- }
-
- if (st.st_size <= 0)
- return;
-
- if (st.st_size > ENTRY_SIZE_MAX) {
- log_error("File passed too large. Ignoring.");
- return;
- }
-
- p = malloc(st.st_size);
- if (!p) {
- log_error("Out of memory");
- return;
- }
-
- n = pread(fd, p, st.st_size, 0);
- if (n < 0)
- log_error("Failed to read file, ignoring: %s", strerror(-n));
- else if (n > 0)
- process_native_message(s, p, n, ucred, tv, label, label_len);
-
- free(p);
-}
-
-static int stdout_stream_log(StdoutStream *s, const char *p) {
- struct iovec iovec[N_IOVEC_META_FIELDS + 5];
- char *message = NULL, *syslog_priority = NULL, *syslog_facility = NULL, *syslog_identifier = NULL;
- unsigned n = 0;
- int priority;
- char *label = NULL;
- size_t label_len = 0;
-
- assert(s);
- assert(p);
-
- if (isempty(p))
- return 0;
-
- priority = s->priority;
-
- if (s->level_prefix)
- parse_syslog_priority((char**) &p, &priority);
-
- if (s->forward_to_syslog || s->server->forward_to_syslog)
- forward_syslog(s->server, fixup_priority(priority), s->identifier, p, &s->ucred, NULL);
-
- if (s->forward_to_kmsg || s->server->forward_to_kmsg)
- forward_kmsg(s->server, priority, s->identifier, p, &s->ucred);
-
- if (s->forward_to_console || s->server->forward_to_console)
- forward_console(s->server, s->identifier, p, &s->ucred);
-
- IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=stdout");
-
- if (asprintf(&syslog_priority, "PRIORITY=%i", priority & LOG_PRIMASK) >= 0)
- IOVEC_SET_STRING(iovec[n++], syslog_priority);
-
- if (priority & LOG_FACMASK)
- if (asprintf(&syslog_facility, "SYSLOG_FACILITY=%i", LOG_FAC(priority)) >= 0)
- IOVEC_SET_STRING(iovec[n++], syslog_facility);
-
- if (s->identifier) {
- syslog_identifier = strappend("SYSLOG_IDENTIFIER=", s->identifier);
- if (syslog_identifier)
- IOVEC_SET_STRING(iovec[n++], syslog_identifier);
- }
-
- message = strappend("MESSAGE=", p);
- if (message)
- IOVEC_SET_STRING(iovec[n++], message);
-
-#ifdef HAVE_SELINUX
- if (s->security_context) {
- label = (char*) s->security_context;
- label_len = strlen((char*) s->security_context);
- }
-#endif
-
- dispatch_message(s->server, iovec, n, ELEMENTSOF(iovec), &s->ucred, NULL, label, label_len, priority);
-
- free(message);
- free(syslog_priority);
- free(syslog_facility);
- free(syslog_identifier);
-
- return 0;
-}
-
-static int stdout_stream_line(StdoutStream *s, char *p) {
- int r;
-
- assert(s);
- assert(p);
-
- p = strstrip(p);
-
- switch (s->state) {
-
- case STDOUT_STREAM_IDENTIFIER:
- if (isempty(p))
- s->identifier = NULL;
- else {
- s->identifier = strdup(p);
- if (!s->identifier) {
- log_error("Out of memory");
- return -ENOMEM;
- }
- }
-
- s->state = STDOUT_STREAM_PRIORITY;
- return 0;
-
- case STDOUT_STREAM_PRIORITY:
- r = safe_atoi(p, &s->priority);
- if (r < 0 || s->priority <= 0 || s->priority >= 999) {
- log_warning("Failed to parse log priority line.");
- return -EINVAL;
- }
-
- s->state = STDOUT_STREAM_LEVEL_PREFIX;
- return 0;
-
- case STDOUT_STREAM_LEVEL_PREFIX:
- r = parse_boolean(p);
- if (r < 0) {
- log_warning("Failed to parse level prefix line.");
- return -EINVAL;
- }
-
- s->level_prefix = !!r;
- s->state = STDOUT_STREAM_FORWARD_TO_SYSLOG;
- return 0;
-
- case STDOUT_STREAM_FORWARD_TO_SYSLOG:
- r = parse_boolean(p);
- if (r < 0) {
- log_warning("Failed to parse forward to syslog line.");
- return -EINVAL;
- }
-
- s->forward_to_syslog = !!r;
- s->state = STDOUT_STREAM_FORWARD_TO_KMSG;
- return 0;
-
- case STDOUT_STREAM_FORWARD_TO_KMSG:
- r = parse_boolean(p);
- if (r < 0) {
- log_warning("Failed to parse copy to kmsg line.");
- return -EINVAL;
- }
-
- s->forward_to_kmsg = !!r;
- s->state = STDOUT_STREAM_FORWARD_TO_CONSOLE;
- return 0;
-
- case STDOUT_STREAM_FORWARD_TO_CONSOLE:
- r = parse_boolean(p);
- if (r < 0) {
- log_warning("Failed to parse copy to console line.");
- return -EINVAL;
- }
-
- s->forward_to_console = !!r;
- s->state = STDOUT_STREAM_RUNNING;
- return 0;
-
- case STDOUT_STREAM_RUNNING:
- return stdout_stream_log(s, p);
- }
-
- assert_not_reached("Unknown stream state");
-}
-
-static int stdout_stream_scan(StdoutStream *s, bool force_flush) {
- char *p;
- size_t remaining;
- int r;
-
- assert(s);
-
- p = s->buffer;
- remaining = s->length;
- for (;;) {
- char *end;
- size_t skip;
-
- end = memchr(p, '\n', remaining);
- if (end)
- skip = end - p + 1;
- else if (remaining >= sizeof(s->buffer) - 1) {
- end = p + sizeof(s->buffer) - 1;
- skip = remaining;
- } else
- break;
-
- *end = 0;
-
- r = stdout_stream_line(s, p);
- if (r < 0)
- return r;
-
- remaining -= skip;
- p += skip;
- }
-
- if (force_flush && remaining > 0) {
- p[remaining] = 0;
- r = stdout_stream_line(s, p);
- if (r < 0)
- return r;
-
- p += remaining;
- remaining = 0;
- }
-
- if (p > s->buffer) {
- memmove(s->buffer, p, remaining);
- s->length = remaining;
- }
-
- return 0;
-}
-
-static int stdout_stream_process(StdoutStream *s) {
- ssize_t l;
- int r;
-
- assert(s);
-
- l = read(s->fd, s->buffer+s->length, sizeof(s->buffer)-1-s->length);
- if (l < 0) {
-
- if (errno == EAGAIN)
- return 0;
-
- log_warning("Failed to read from stream: %m");
- return -errno;
- }
-
- if (l == 0) {
- r = stdout_stream_scan(s, true);
- if (r < 0)
- return r;
-
- return 0;
- }
-
- s->length += l;
- r = stdout_stream_scan(s, false);
- if (r < 0)
- return r;
-
- return 1;
-
-}
-
-static void stdout_stream_free(StdoutStream *s) {
- assert(s);
-
- if (s->server) {
- assert(s->server->n_stdout_streams > 0);
- s->server->n_stdout_streams --;
- LIST_REMOVE(StdoutStream, stdout_stream, s->server->stdout_streams, s);
- }
-
- if (s->fd >= 0) {
- if (s->server)
- epoll_ctl(s->server->epoll_fd, EPOLL_CTL_DEL, s->fd, NULL);
-
- close_nointr_nofail(s->fd);
- }
-
-#ifdef HAVE_SELINUX
- if (s->security_context)
- freecon(s->security_context);
-#endif
-
- free(s->identifier);
- free(s);
-}
-
-static int stdout_stream_new(Server *s) {
- StdoutStream *stream;
- int fd, r;
- socklen_t len;
- struct epoll_event ev;
-
- assert(s);
-
- fd = accept4(s->stdout_fd, NULL, NULL, SOCK_NONBLOCK|SOCK_CLOEXEC);
- if (fd < 0) {
- if (errno == EAGAIN)
- return 0;
-
- log_error("Failed to accept stdout connection: %m");
- return -errno;
- }
-
- if (s->n_stdout_streams >= STDOUT_STREAMS_MAX) {
- log_warning("Too many stdout streams, refusing connection.");
- close_nointr_nofail(fd);
- return 0;
- }
-
- stream = new0(StdoutStream, 1);
- if (!stream) {
- log_error("Out of memory.");
- close_nointr_nofail(fd);
- return -ENOMEM;
- }
-
- stream->fd = fd;
-
- len = sizeof(stream->ucred);
- if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &stream->ucred, &len) < 0) {
- log_error("Failed to determine peer credentials: %m");
- r = -errno;
- goto fail;
- }
-
-#ifdef HAVE_SELINUX
- if (getpeercon(fd, &stream->security_context) < 0)
- log_error("Failed to determine peer security context.");
-#endif
-
- if (shutdown(fd, SHUT_WR) < 0) {
- log_error("Failed to shutdown writing side of socket: %m");
- r = -errno;
- goto fail;
- }
-
- zero(ev);
- ev.data.ptr = stream;
- ev.events = EPOLLIN;
- if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0) {
- log_error("Failed to add stream to event loop: %m");
- r = -errno;
- goto fail;
- }
-
- stream->server = s;
- LIST_PREPEND(StdoutStream, stdout_stream, s->stdout_streams, stream);
- s->n_stdout_streams ++;
-
- return 0;
-
-fail:
- stdout_stream_free(stream);
- return r;
-}
-
-static int parse_kernel_timestamp(char **_p, usec_t *t) {
- usec_t r;
- int k, i;
- char *p;
-
- assert(_p);
- assert(*_p);
- assert(t);
-
- p = *_p;
-
- if (strlen(p) < 14 || p[0] != '[' || p[13] != ']' || p[6] != '.')
- return 0;
-
- r = 0;
-
- for (i = 1; i <= 5; i++) {
- r *= 10;
-
- if (p[i] == ' ')
- continue;
-
- k = undecchar(p[i]);
- if (k < 0)
- return 0;
-
- r += k;
- }
-
- for (i = 7; i <= 12; i++) {
- r *= 10;
-
- k = undecchar(p[i]);
- if (k < 0)
- return 0;
-
- r += k;
- }
-
- *t = r;
- *_p += 14;
- *_p += strspn(*_p, WHITESPACE);
-
- return 1;
-}
-
-static void proc_kmsg_line(Server *s, const char *p) {
- struct iovec iovec[N_IOVEC_META_FIELDS + 7];
- char *message = NULL, *syslog_priority = NULL, *syslog_pid = NULL, *syslog_facility = NULL, *syslog_identifier = NULL, *source_time = NULL;
- int priority = LOG_KERN | LOG_INFO;
- unsigned n = 0;
- usec_t usec;
- char *identifier = NULL, *pid = NULL;
-
- assert(s);
- assert(p);
-
- if (isempty(p))
- return;
-
- parse_syslog_priority((char **) &p, &priority);
-
- if (s->forward_to_kmsg && (priority & LOG_FACMASK) != LOG_KERN)
- return;
-
- if (parse_kernel_timestamp((char **) &p, &usec) > 0) {
- if (asprintf(&source_time, "_SOURCE_MONOTONIC_TIMESTAMP=%llu",
- (unsigned long long) usec) >= 0)
- IOVEC_SET_STRING(iovec[n++], source_time);
- }
-
- IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=kernel");
-
- if (asprintf(&syslog_priority, "PRIORITY=%i", priority & LOG_PRIMASK) >= 0)
- IOVEC_SET_STRING(iovec[n++], syslog_priority);
-
- if ((priority & LOG_FACMASK) == LOG_KERN) {
-
- if (s->forward_to_syslog)
- forward_syslog(s, priority, "kernel", p, NULL, NULL);
-
- IOVEC_SET_STRING(iovec[n++], "SYSLOG_IDENTIFIER=kernel");
- } else {
- read_identifier(&p, &identifier, &pid);
-
- if (s->forward_to_syslog)
- forward_syslog(s, priority, identifier, p, NULL, NULL);
-
- if (identifier) {
- syslog_identifier = strappend("SYSLOG_IDENTIFIER=", identifier);
- if (syslog_identifier)
- IOVEC_SET_STRING(iovec[n++], syslog_identifier);
- }