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Merge pull request #653 from dvdhrm/bus-gold
[thirdparty/systemd.git] / src / journal-remote / journal-remote.c
1 /***
2 This file is part of systemd.
3
4 Copyright 2012 Zbigniew Jędrzejewski-Szmek
5
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
10
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
18 ***/
19
20 #include <errno.h>
21 #include <fcntl.h>
22 #include <getopt.h>
23 #include <stdio.h>
24 #include <stdlib.h>
25 #include <string.h>
26 #include <sys/prctl.h>
27 #include <sys/socket.h>
28 #include <unistd.h>
29
30 #include "sd-daemon.h"
31
32 #include "alloc-util.h"
33 #include "conf-parser.h"
34 #include "def.h"
35 #include "escape.h"
36 #include "fd-util.h"
37 #include "fileio.h"
38 #include "journal-file.h"
39 #include "journal-remote-write.h"
40 #include "journal-remote.h"
41 #include "journald-native.h"
42 #include "macro.h"
43 #include "parse-util.h"
44 #include "signal-util.h"
45 #include "socket-util.h"
46 #include "stat-util.h"
47 #include "stdio-util.h"
48 #include "string-table.h"
49 #include "string-util.h"
50 #include "strv.h"
51
52 #define REMOTE_JOURNAL_PATH "/var/log/journal/remote"
53
54 #define PRIV_KEY_FILE CERTIFICATE_ROOT "/private/journal-remote.pem"
55 #define CERT_FILE CERTIFICATE_ROOT "/certs/journal-remote.pem"
56 #define TRUST_FILE CERTIFICATE_ROOT "/ca/trusted.pem"
57
58 static char* arg_url = NULL;
59 static char* arg_getter = NULL;
60 static char* arg_listen_raw = NULL;
61 static char* arg_listen_http = NULL;
62 static char* arg_listen_https = NULL;
63 static char** arg_files = NULL;
64 static int arg_compress = true;
65 static int arg_seal = false;
66 static int http_socket = -1, https_socket = -1;
67 static char** arg_gnutls_log = NULL;
68
69 static JournalWriteSplitMode arg_split_mode = JOURNAL_WRITE_SPLIT_HOST;
70 static char* arg_output = NULL;
71
72 static char *arg_key = NULL;
73 static char *arg_cert = NULL;
74 static char *arg_trust = NULL;
75 static bool arg_trust_all = false;
76
77 /**********************************************************************
78 **********************************************************************
79 **********************************************************************/
80
81 static int spawn_child(const char* child, char** argv) {
82 int fd[2];
83 pid_t parent_pid, child_pid;
84 int r;
85
86 if (pipe(fd) < 0)
87 return log_error_errno(errno, "Failed to create pager pipe: %m");
88
89 parent_pid = getpid();
90
91 child_pid = fork();
92 if (child_pid < 0) {
93 r = log_error_errno(errno, "Failed to fork: %m");
94 safe_close_pair(fd);
95 return r;
96 }
97
98 /* In the child */
99 if (child_pid == 0) {
100
101 (void) reset_all_signal_handlers();
102 (void) reset_signal_mask();
103
104 r = dup2(fd[1], STDOUT_FILENO);
105 if (r < 0) {
106 log_error_errno(errno, "Failed to dup pipe to stdout: %m");
107 _exit(EXIT_FAILURE);
108 }
109
110 safe_close_pair(fd);
111
112 /* Make sure the child goes away when the parent dies */
113 if (prctl(PR_SET_PDEATHSIG, SIGTERM) < 0)
114 _exit(EXIT_FAILURE);
115
116 /* Check whether our parent died before we were able
117 * to set the death signal */
118 if (getppid() != parent_pid)
119 _exit(EXIT_SUCCESS);
120
121 execvp(child, argv);
122 log_error_errno(errno, "Failed to exec child %s: %m", child);
123 _exit(EXIT_FAILURE);
124 }
125
126 r = close(fd[1]);
127 if (r < 0)
128 log_warning_errno(errno, "Failed to close write end of pipe: %m");
129
130 r = fd_nonblock(fd[0], true);
131 if (r < 0)
132 log_warning_errno(errno, "Failed to set child pipe to non-blocking: %m");
133
134 return fd[0];
135 }
136
137 static int spawn_curl(const char* url) {
138 char **argv = STRV_MAKE("curl",
139 "-HAccept: application/vnd.fdo.journal",
140 "--silent",
141 "--show-error",
142 url);
143 int r;
144
145 r = spawn_child("curl", argv);
146 if (r < 0)
147 log_error_errno(r, "Failed to spawn curl: %m");
148 return r;
149 }
150
151 static int spawn_getter(const char *getter) {
152 int r;
153 _cleanup_strv_free_ char **words = NULL;
154
155 assert(getter);
156 r = strv_split_extract(&words, getter, WHITESPACE, EXTRACT_QUOTES);
157 if (r < 0)
158 return log_error_errno(r, "Failed to split getter option: %m");
159
160 r = spawn_child(words[0], words);
161 if (r < 0)
162 log_error_errno(r, "Failed to spawn getter %s: %m", getter);
163
164 return r;
165 }
166
167 #define filename_escape(s) xescape((s), "/ ")
168
169 static int open_output(Writer *w, const char* host) {
170 _cleanup_free_ char *_output = NULL;
171 const char *output;
172 int r;
173
174 switch (arg_split_mode) {
175 case JOURNAL_WRITE_SPLIT_NONE:
176 output = arg_output ?: REMOTE_JOURNAL_PATH "/remote.journal";
177 break;
178
179 case JOURNAL_WRITE_SPLIT_HOST: {
180 _cleanup_free_ char *name;
181
182 assert(host);
183
184 name = filename_escape(host);
185 if (!name)
186 return log_oom();
187
188 r = asprintf(&_output, "%s/remote-%s.journal",
189 arg_output ?: REMOTE_JOURNAL_PATH,
190 name);
191 if (r < 0)
192 return log_oom();
193
194 output = _output;
195 break;
196 }
197
198 default:
199 assert_not_reached("what?");
200 }
201
202 r = journal_file_open_reliably(output,
203 O_RDWR|O_CREAT, 0640,
204 arg_compress, arg_seal,
205 &w->metrics,
206 w->mmap, NULL,
207 NULL, &w->journal);
208 if (r < 0)
209 log_error_errno(r, "Failed to open output journal %s: %m",
210 output);
211 else
212 log_debug("Opened output file %s", w->journal->path);
213 return r;
214 }
215
216 /**********************************************************************
217 **********************************************************************
218 **********************************************************************/
219
220 static int init_writer_hashmap(RemoteServer *s) {
221 static const struct hash_ops *hash_ops[] = {
222 [JOURNAL_WRITE_SPLIT_NONE] = NULL,
223 [JOURNAL_WRITE_SPLIT_HOST] = &string_hash_ops,
224 };
225
226 assert(arg_split_mode >= 0 && arg_split_mode < (int) ELEMENTSOF(hash_ops));
227
228 s->writers = hashmap_new(hash_ops[arg_split_mode]);
229 if (!s->writers)
230 return log_oom();
231
232 return 0;
233 }
234
235 static int get_writer(RemoteServer *s, const char *host,
236 Writer **writer) {
237 const void *key;
238 _cleanup_writer_unref_ Writer *w = NULL;
239 int r;
240
241 switch(arg_split_mode) {
242 case JOURNAL_WRITE_SPLIT_NONE:
243 key = "one and only";
244 break;
245
246 case JOURNAL_WRITE_SPLIT_HOST:
247 assert(host);
248 key = host;
249 break;
250
251 default:
252 assert_not_reached("what split mode?");
253 }
254
255 w = hashmap_get(s->writers, key);
256 if (w)
257 writer_ref(w);
258 else {
259 w = writer_new(s);
260 if (!w)
261 return log_oom();
262
263 if (arg_split_mode == JOURNAL_WRITE_SPLIT_HOST) {
264 w->hashmap_key = strdup(key);
265 if (!w->hashmap_key)
266 return log_oom();
267 }
268
269 r = open_output(w, host);
270 if (r < 0)
271 return r;
272
273 r = hashmap_put(s->writers, w->hashmap_key ?: key, w);
274 if (r < 0)
275 return r;
276 }
277
278 *writer = w;
279 w = NULL;
280 return 0;
281 }
282
283 /**********************************************************************
284 **********************************************************************
285 **********************************************************************/
286
287 /* This should go away as soon as µhttpd allows state to be passed around. */
288 static RemoteServer *server;
289
290 static int dispatch_raw_source_event(sd_event_source *event,
291 int fd,
292 uint32_t revents,
293 void *userdata);
294 static int dispatch_raw_source_until_block(sd_event_source *event,
295 void *userdata);
296 static int dispatch_blocking_source_event(sd_event_source *event,
297 void *userdata);
298 static int dispatch_raw_connection_event(sd_event_source *event,
299 int fd,
300 uint32_t revents,
301 void *userdata);
302 static int dispatch_http_event(sd_event_source *event,
303 int fd,
304 uint32_t revents,
305 void *userdata);
306
307 static int get_source_for_fd(RemoteServer *s,
308 int fd, char *name, RemoteSource **source) {
309 Writer *writer;
310 int r;
311
312 /* This takes ownership of name, but only on success. */
313
314 assert(fd >= 0);
315 assert(source);
316
317 if (!GREEDY_REALLOC0(s->sources, s->sources_size, fd + 1))
318 return log_oom();
319
320 r = get_writer(s, name, &writer);
321 if (r < 0)
322 return log_warning_errno(r, "Failed to get writer for source %s: %m",
323 name);
324
325 if (s->sources[fd] == NULL) {
326 s->sources[fd] = source_new(fd, false, name, writer);
327 if (!s->sources[fd]) {
328 writer_unref(writer);
329 return log_oom();
330 }
331
332 s->active++;
333 }
334
335 *source = s->sources[fd];
336 return 0;
337 }
338
339 static int remove_source(RemoteServer *s, int fd) {
340 RemoteSource *source;
341
342 assert(s);
343 assert(fd >= 0 && fd < (ssize_t) s->sources_size);
344
345 source = s->sources[fd];
346 if (source) {
347 /* this closes fd too */
348 source_free(source);
349 s->sources[fd] = NULL;
350 s->active--;
351 }
352
353 return 0;
354 }
355
356 static int add_source(RemoteServer *s, int fd, char* name, bool own_name) {
357
358 RemoteSource *source = NULL;
359 int r;
360
361 /* This takes ownership of name, even on failure, if own_name is true. */
362
363 assert(s);
364 assert(fd >= 0);
365 assert(name);
366
367 if (!own_name) {
368 name = strdup(name);
369 if (!name)
370 return log_oom();
371 }
372
373 r = get_source_for_fd(s, fd, name, &source);
374 if (r < 0) {
375 log_error_errno(r, "Failed to create source for fd:%d (%s): %m",
376 fd, name);
377 free(name);
378 return r;
379 }
380
381 r = sd_event_add_io(s->events, &source->event,
382 fd, EPOLLIN|EPOLLRDHUP|EPOLLPRI,
383 dispatch_raw_source_event, source);
384 if (r == 0) {
385 /* Add additional source for buffer processing. It will be
386 * enabled later. */
387 r = sd_event_add_defer(s->events, &source->buffer_event,
388 dispatch_raw_source_until_block, source);
389 if (r == 0)
390 sd_event_source_set_enabled(source->buffer_event, SD_EVENT_OFF);
391 } else if (r == -EPERM) {
392 log_debug("Falling back to sd_event_add_defer for fd:%d (%s)", fd, name);
393 r = sd_event_add_defer(s->events, &source->event,
394 dispatch_blocking_source_event, source);
395 if (r == 0)
396 sd_event_source_set_enabled(source->event, SD_EVENT_ON);
397 }
398 if (r < 0) {
399 log_error_errno(r, "Failed to register event source for fd:%d: %m",
400 fd);
401 goto error;
402 }
403
404 r = sd_event_source_set_description(source->event, name);
405 if (r < 0) {
406 log_error_errno(r, "Failed to set source name for fd:%d: %m", fd);
407 goto error;
408 }
409
410 return 1; /* work to do */
411
412 error:
413 remove_source(s, fd);
414 return r;
415 }
416
417 static int add_raw_socket(RemoteServer *s, int fd) {
418 int r;
419 _cleanup_close_ int fd_ = fd;
420 char name[sizeof("raw-socket-")-1 + DECIMAL_STR_MAX(int) + 1];
421
422 assert(fd >= 0);
423
424 r = sd_event_add_io(s->events, &s->listen_event,
425 fd, EPOLLIN,
426 dispatch_raw_connection_event, s);
427 if (r < 0)
428 return r;
429
430 xsprintf(name, "raw-socket-%d", fd);
431
432 r = sd_event_source_set_description(s->listen_event, name);
433 if (r < 0)
434 return r;
435
436 fd_ = -1;
437 s->active++;
438 return 0;
439 }
440
441 static int setup_raw_socket(RemoteServer *s, const char *address) {
442 int fd;
443
444 fd = make_socket_fd(LOG_INFO, address, SOCK_STREAM, SOCK_CLOEXEC);
445 if (fd < 0)
446 return fd;
447
448 return add_raw_socket(s, fd);
449 }
450
451 /**********************************************************************
452 **********************************************************************
453 **********************************************************************/
454
455 static int request_meta(void **connection_cls, int fd, char *hostname) {
456 RemoteSource *source;
457 Writer *writer;
458 int r;
459
460 assert(connection_cls);
461 if (*connection_cls)
462 return 0;
463
464 r = get_writer(server, hostname, &writer);
465 if (r < 0)
466 return log_warning_errno(r, "Failed to get writer for source %s: %m",
467 hostname);
468
469 source = source_new(fd, true, hostname, writer);
470 if (!source) {
471 writer_unref(writer);
472 return log_oom();
473 }
474
475 log_debug("Added RemoteSource as connection metadata %p", source);
476
477 *connection_cls = source;
478 return 0;
479 }
480
481 static void request_meta_free(void *cls,
482 struct MHD_Connection *connection,
483 void **connection_cls,
484 enum MHD_RequestTerminationCode toe) {
485 RemoteSource *s;
486
487 assert(connection_cls);
488 s = *connection_cls;
489
490 if (s) {
491 log_debug("Cleaning up connection metadata %p", s);
492 source_free(s);
493 *connection_cls = NULL;
494 }
495 }
496
497 static int process_http_upload(
498 struct MHD_Connection *connection,
499 const char *upload_data,
500 size_t *upload_data_size,
501 RemoteSource *source) {
502
503 bool finished = false;
504 size_t remaining;
505 int r;
506
507 assert(source);
508
509 log_trace("%s: connection %p, %zu bytes",
510 __func__, connection, *upload_data_size);
511
512 if (*upload_data_size) {
513 log_trace("Received %zu bytes", *upload_data_size);
514
515 r = push_data(source, upload_data, *upload_data_size);
516 if (r < 0)
517 return mhd_respond_oom(connection);
518
519 *upload_data_size = 0;
520 } else
521 finished = true;
522
523 for (;;) {
524 r = process_source(source, arg_compress, arg_seal);
525 if (r == -EAGAIN)
526 break;
527 else if (r < 0) {
528 log_warning("Failed to process data for connection %p", connection);
529 if (r == -E2BIG)
530 return mhd_respondf(connection,
531 r, MHD_HTTP_REQUEST_ENTITY_TOO_LARGE,
532 "Entry is too large, maximum is " STRINGIFY(DATA_SIZE_MAX) " bytes.");
533 else
534 return mhd_respondf(connection,
535 r, MHD_HTTP_UNPROCESSABLE_ENTITY,
536 "Processing failed: %m.");
537 }
538 }
539
540 if (!finished)
541 return MHD_YES;
542
543 /* The upload is finished */
544
545 remaining = source_non_empty(source);
546 if (remaining > 0) {
547 log_warning("Premature EOF byte. %zu bytes lost.", remaining);
548 return mhd_respondf(connection,
549 0, MHD_HTTP_EXPECTATION_FAILED,
550 "Premature EOF. %zu bytes of trailing data not processed.",
551 remaining);
552 }
553
554 return mhd_respond(connection, MHD_HTTP_ACCEPTED, "OK.");
555 };
556
557 static int request_handler(
558 void *cls,
559 struct MHD_Connection *connection,
560 const char *url,
561 const char *method,
562 const char *version,
563 const char *upload_data,
564 size_t *upload_data_size,
565 void **connection_cls) {
566
567 const char *header;
568 int r, code, fd;
569 _cleanup_free_ char *hostname = NULL;
570
571 assert(connection);
572 assert(connection_cls);
573 assert(url);
574 assert(method);
575
576 log_trace("Handling a connection %s %s %s", method, url, version);
577
578 if (*connection_cls)
579 return process_http_upload(connection,
580 upload_data, upload_data_size,
581 *connection_cls);
582
583 if (!streq(method, "POST"))
584 return mhd_respond(connection, MHD_HTTP_NOT_ACCEPTABLE, "Unsupported method.");
585
586 if (!streq(url, "/upload"))
587 return mhd_respond(connection, MHD_HTTP_NOT_FOUND, "Not found.");
588
589 header = MHD_lookup_connection_value(connection,
590 MHD_HEADER_KIND, "Content-Type");
591 if (!header || !streq(header, "application/vnd.fdo.journal"))
592 return mhd_respond(connection, MHD_HTTP_UNSUPPORTED_MEDIA_TYPE,
593 "Content-Type: application/vnd.fdo.journal is required.");
594
595 {
596 const union MHD_ConnectionInfo *ci;
597
598 ci = MHD_get_connection_info(connection,
599 MHD_CONNECTION_INFO_CONNECTION_FD);
600 if (!ci) {
601 log_error("MHD_get_connection_info failed: cannot get remote fd");
602 return mhd_respond(connection, MHD_HTTP_INTERNAL_SERVER_ERROR,
603 "Cannot check remote address.");
604 }
605
606 fd = ci->connect_fd;
607 assert(fd >= 0);
608 }
609
610 if (server->check_trust) {
611 r = check_permissions(connection, &code, &hostname);
612 if (r < 0)
613 return code;
614 } else {
615 r = getpeername_pretty(fd, false, &hostname);
616 if (r < 0)
617 return mhd_respond(connection, MHD_HTTP_INTERNAL_SERVER_ERROR,
618 "Cannot check remote hostname.");
619 }
620
621 assert(hostname);
622
623 r = request_meta(connection_cls, fd, hostname);
624 if (r == -ENOMEM)
625 return respond_oom(connection);
626 else if (r < 0)
627 return mhd_respondf(connection, r, MHD_HTTP_INTERNAL_SERVER_ERROR, "%m");
628
629 hostname = NULL;
630 return MHD_YES;
631 }
632
633 static int setup_microhttpd_server(RemoteServer *s,
634 int fd,
635 const char *key,
636 const char *cert,
637 const char *trust) {
638 struct MHD_OptionItem opts[] = {
639 { MHD_OPTION_NOTIFY_COMPLETED, (intptr_t) request_meta_free},
640 { MHD_OPTION_EXTERNAL_LOGGER, (intptr_t) microhttpd_logger},
641 { MHD_OPTION_LISTEN_SOCKET, fd},
642 { MHD_OPTION_CONNECTION_MEMORY_LIMIT, 128*1024},
643 { MHD_OPTION_END},
644 { MHD_OPTION_END},
645 { MHD_OPTION_END},
646 { MHD_OPTION_END}};
647 int opts_pos = 4;
648 int flags =
649 MHD_USE_DEBUG |
650 MHD_USE_DUAL_STACK |
651 MHD_USE_EPOLL_LINUX_ONLY |
652 MHD_USE_PEDANTIC_CHECKS |
653 MHD_USE_PIPE_FOR_SHUTDOWN;
654
655 const union MHD_DaemonInfo *info;
656 int r, epoll_fd;
657 MHDDaemonWrapper *d;
658
659 assert(fd >= 0);
660
661 r = fd_nonblock(fd, true);
662 if (r < 0)
663 return log_error_errno(r, "Failed to make fd:%d nonblocking: %m", fd);
664
665 if (key) {
666 assert(cert);
667
668 opts[opts_pos++] = (struct MHD_OptionItem)
669 {MHD_OPTION_HTTPS_MEM_KEY, 0, (char*) key};
670 opts[opts_pos++] = (struct MHD_OptionItem)
671 {MHD_OPTION_HTTPS_MEM_CERT, 0, (char*) cert};
672
673 flags |= MHD_USE_SSL;
674
675 if (trust)
676 opts[opts_pos++] = (struct MHD_OptionItem)
677 {MHD_OPTION_HTTPS_MEM_TRUST, 0, (char*) trust};
678 }
679
680 d = new(MHDDaemonWrapper, 1);
681 if (!d)
682 return log_oom();
683
684 d->fd = (uint64_t) fd;
685
686 d->daemon = MHD_start_daemon(flags, 0,
687 NULL, NULL,
688 request_handler, NULL,
689 MHD_OPTION_ARRAY, opts,
690 MHD_OPTION_END);
691 if (!d->daemon) {
692 log_error("Failed to start µhttp daemon");
693 r = -EINVAL;
694 goto error;
695 }
696
697 log_debug("Started MHD %s daemon on fd:%d (wrapper @ %p)",
698 key ? "HTTPS" : "HTTP", fd, d);
699
700
701 info = MHD_get_daemon_info(d->daemon, MHD_DAEMON_INFO_EPOLL_FD_LINUX_ONLY);
702 if (!info) {
703 log_error("µhttp returned NULL daemon info");
704 r = -EOPNOTSUPP;
705 goto error;
706 }
707
708 epoll_fd = info->listen_fd;
709 if (epoll_fd < 0) {
710 log_error("µhttp epoll fd is invalid");
711 r = -EUCLEAN;
712 goto error;
713 }
714
715 r = sd_event_add_io(s->events, &d->event,
716 epoll_fd, EPOLLIN,
717 dispatch_http_event, d);
718 if (r < 0) {
719 log_error_errno(r, "Failed to add event callback: %m");
720 goto error;
721 }
722
723 r = sd_event_source_set_description(d->event, "epoll-fd");
724 if (r < 0) {
725 log_error_errno(r, "Failed to set source name: %m");
726 goto error;
727 }
728
729 r = hashmap_ensure_allocated(&s->daemons, &uint64_hash_ops);
730 if (r < 0) {
731 log_oom();
732 goto error;
733 }
734
735 r = hashmap_put(s->daemons, &d->fd, d);
736 if (r < 0) {
737 log_error_errno(r, "Failed to add daemon to hashmap: %m");
738 goto error;
739 }
740
741 s->active++;
742 return 0;
743
744 error:
745 MHD_stop_daemon(d->daemon);
746 free(d->daemon);
747 free(d);
748 return r;
749 }
750
751 static int setup_microhttpd_socket(RemoteServer *s,
752 const char *address,
753 const char *key,
754 const char *cert,
755 const char *trust) {
756 int fd;
757
758 fd = make_socket_fd(LOG_DEBUG, address, SOCK_STREAM, SOCK_CLOEXEC);
759 if (fd < 0)
760 return fd;
761
762 return setup_microhttpd_server(s, fd, key, cert, trust);
763 }
764
765 static int dispatch_http_event(sd_event_source *event,
766 int fd,
767 uint32_t revents,
768 void *userdata) {
769 MHDDaemonWrapper *d = userdata;
770 int r;
771
772 assert(d);
773
774 r = MHD_run(d->daemon);
775 if (r == MHD_NO) {
776 log_error("MHD_run failed!");
777 // XXX: unregister daemon
778 return -EINVAL;
779 }
780
781 return 1; /* work to do */
782 }
783
784 /**********************************************************************
785 **********************************************************************
786 **********************************************************************/
787
788 static int setup_signals(RemoteServer *s) {
789 int r;
790
791 assert(s);
792
793 assert_se(sigprocmask_many(SIG_SETMASK, NULL, SIGINT, SIGTERM, -1) >= 0);
794
795 r = sd_event_add_signal(s->events, &s->sigterm_event, SIGTERM, NULL, s);
796 if (r < 0)
797 return r;
798
799 r = sd_event_add_signal(s->events, &s->sigint_event, SIGINT, NULL, s);
800 if (r < 0)
801 return r;
802
803 return 0;
804 }
805
806 static int negative_fd(const char *spec) {
807 /* Return a non-positive number as its inverse, -EINVAL otherwise. */
808
809 int fd, r;
810
811 r = safe_atoi(spec, &fd);
812 if (r < 0)
813 return r;
814
815 if (fd > 0)
816 return -EINVAL;
817 else
818 return -fd;
819 }
820
821 static int remoteserver_init(RemoteServer *s,
822 const char* key,
823 const char* cert,
824 const char* trust) {
825 int r, n, fd;
826 char **file;
827
828 assert(s);
829
830 if ((arg_listen_raw || arg_listen_http) && trust) {
831 log_error("Option --trust makes all non-HTTPS connections untrusted.");
832 return -EINVAL;
833 }
834
835 r = sd_event_default(&s->events);
836 if (r < 0)
837 return log_error_errno(r, "Failed to allocate event loop: %m");
838
839 setup_signals(s);
840
841 assert(server == NULL);
842 server = s;
843
844 r = init_writer_hashmap(s);
845 if (r < 0)
846 return r;
847
848 n = sd_listen_fds(true);
849 if (n < 0)
850 return log_error_errno(n, "Failed to read listening file descriptors from environment: %m");
851 else
852 log_debug("Received %d descriptors", n);
853
854 if (MAX(http_socket, https_socket) >= SD_LISTEN_FDS_START + n) {
855 log_error("Received fewer sockets than expected");
856 return -EBADFD;
857 }
858
859 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) {
860 if (sd_is_socket(fd, AF_UNSPEC, 0, true)) {
861 log_debug("Received a listening socket (fd:%d)", fd);
862
863 if (fd == http_socket)
864 r = setup_microhttpd_server(s, fd, NULL, NULL, NULL);
865 else if (fd == https_socket)
866 r = setup_microhttpd_server(s, fd, key, cert, trust);
867 else
868 r = add_raw_socket(s, fd);
869 } else if (sd_is_socket(fd, AF_UNSPEC, 0, false)) {
870 char *hostname;
871
872 r = getpeername_pretty(fd, false, &hostname);
873 if (r < 0)
874 return log_error_errno(r, "Failed to retrieve remote name: %m");
875
876 log_debug("Received a connection socket (fd:%d) from %s", fd, hostname);
877
878 r = add_source(s, fd, hostname, true);
879 } else {
880 log_error("Unknown socket passed on fd:%d", fd);
881
882 return -EINVAL;
883 }
884
885 if (r < 0)
886 return log_error_errno(r, "Failed to register socket (fd:%d): %m",
887 fd);
888 }
889
890 if (arg_getter) {
891 log_info("Spawning getter %s...", arg_getter);
892 fd = spawn_getter(arg_getter);
893 if (fd < 0)
894 return fd;
895
896 r = add_source(s, fd, (char*) arg_output, false);
897 if (r < 0)
898 return r;
899 }
900
901 if (arg_url) {
902 const char *url;
903 char *hostname, *p;
904
905 if (!strstr(arg_url, "/entries")) {
906 if (endswith(arg_url, "/"))
907 url = strjoina(arg_url, "entries");
908 else
909 url = strjoina(arg_url, "/entries");
910 }
911 else
912 url = strdupa(arg_url);
913
914 log_info("Spawning curl %s...", url);
915 fd = spawn_curl(url);
916 if (fd < 0)
917 return fd;
918
919 hostname =
920 startswith(arg_url, "https://") ?:
921 startswith(arg_url, "http://") ?:
922 arg_url;
923
924 hostname = strdupa(hostname);
925 if ((p = strchr(hostname, '/')))
926 *p = '\0';
927 if ((p = strchr(hostname, ':')))
928 *p = '\0';
929
930 r = add_source(s, fd, hostname, false);
931 if (r < 0)
932 return r;
933 }
934
935 if (arg_listen_raw) {
936 log_debug("Listening on a socket...");
937 r = setup_raw_socket(s, arg_listen_raw);
938 if (r < 0)
939 return r;
940 }
941
942 if (arg_listen_http) {
943 r = setup_microhttpd_socket(s, arg_listen_http, NULL, NULL, NULL);
944 if (r < 0)
945 return r;
946 }
947
948 if (arg_listen_https) {
949 r = setup_microhttpd_socket(s, arg_listen_https, key, cert, trust);
950 if (r < 0)
951 return r;
952 }
953
954 STRV_FOREACH(file, arg_files) {
955 const char *output_name;
956
957 if (streq(*file, "-")) {
958 log_debug("Using standard input as source.");
959
960 fd = STDIN_FILENO;
961 output_name = "stdin";
962 } else {
963 log_debug("Reading file %s...", *file);
964
965 fd = open(*file, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NONBLOCK);
966 if (fd < 0)
967 return log_error_errno(errno, "Failed to open %s: %m", *file);
968 output_name = *file;
969 }
970
971 r = add_source(s, fd, (char*) output_name, false);
972 if (r < 0)
973 return r;
974 }
975
976 if (s->active == 0) {
977 log_error("Zero sources specified");
978 return -EINVAL;
979 }
980
981 if (arg_split_mode == JOURNAL_WRITE_SPLIT_NONE) {
982 /* In this case we know what the writer will be
983 called, so we can create it and verify that we can
984 create output as expected. */
985 r = get_writer(s, NULL, &s->_single_writer);
986 if (r < 0)
987 return r;
988 }
989
990 return 0;
991 }
992
993 static void server_destroy(RemoteServer *s) {
994 size_t i;
995 MHDDaemonWrapper *d;
996
997 while ((d = hashmap_steal_first(s->daemons))) {
998 MHD_stop_daemon(d->daemon);
999 sd_event_source_unref(d->event);
1000 free(d);
1001 }
1002
1003 hashmap_free(s->daemons);
1004
1005 assert(s->sources_size == 0 || s->sources);
1006 for (i = 0; i < s->sources_size; i++)
1007 remove_source(s, i);
1008 free(s->sources);
1009
1010 writer_unref(s->_single_writer);
1011 hashmap_free(s->writers);
1012
1013 sd_event_source_unref(s->sigterm_event);
1014 sd_event_source_unref(s->sigint_event);
1015 sd_event_source_unref(s->listen_event);
1016 sd_event_unref(s->events);
1017
1018 /* fds that we're listening on remain open... */
1019 }
1020
1021 /**********************************************************************
1022 **********************************************************************
1023 **********************************************************************/
1024
1025 static int handle_raw_source(sd_event_source *event,
1026 int fd,
1027 uint32_t revents,
1028 RemoteServer *s) {
1029
1030 RemoteSource *source;
1031 int r;
1032
1033 /* Returns 1 if there might be more data pending,
1034 * 0 if data is currently exhausted, negative on error.
1035 */
1036
1037 assert(fd >= 0 && fd < (ssize_t) s->sources_size);
1038 source = s->sources[fd];
1039 assert(source->fd == fd);
1040
1041 r = process_source(source, arg_compress, arg_seal);
1042 if (source->state == STATE_EOF) {
1043 size_t remaining;
1044
1045 log_debug("EOF reached with source fd:%d (%s)",
1046 source->fd, source->name);
1047
1048 remaining = source_non_empty(source);
1049 if (remaining > 0)
1050 log_notice("Premature EOF. %zu bytes lost.", remaining);
1051 remove_source(s, source->fd);
1052 log_debug("%zu active sources remaining", s->active);
1053 return 0;
1054 } else if (r == -E2BIG) {
1055 log_notice_errno(E2BIG, "Entry too big, skipped");
1056 return 1;
1057 } else if (r == -EAGAIN) {
1058 return 0;
1059 } else if (r < 0) {
1060 log_debug_errno(r, "Closing connection: %m");
1061 remove_source(server, fd);
1062 return 0;
1063 } else
1064 return 1;
1065 }
1066
1067 static int dispatch_raw_source_until_block(sd_event_source *event,
1068 void *userdata) {
1069 RemoteSource *source = userdata;
1070 int r;
1071
1072 /* Make sure event stays around even if source is destroyed */
1073 sd_event_source_ref(event);
1074
1075 r = handle_raw_source(event, source->fd, EPOLLIN, server);
1076 if (r != 1)
1077 /* No more data for now */
1078 sd_event_source_set_enabled(event, SD_EVENT_OFF);
1079
1080 sd_event_source_unref(event);
1081
1082 return r;
1083 }
1084
1085 static int dispatch_raw_source_event(sd_event_source *event,
1086 int fd,
1087 uint32_t revents,
1088 void *userdata) {
1089 RemoteSource *source = userdata;
1090 int r;
1091
1092 assert(source->event);
1093 assert(source->buffer_event);
1094
1095 r = handle_raw_source(event, fd, EPOLLIN, server);
1096 if (r == 1)
1097 /* Might have more data. We need to rerun the handler
1098 * until we are sure the buffer is exhausted. */
1099 sd_event_source_set_enabled(source->buffer_event, SD_EVENT_ON);
1100
1101 return r;
1102 }
1103
1104 static int dispatch_blocking_source_event(sd_event_source *event,
1105 void *userdata) {
1106 RemoteSource *source = userdata;
1107
1108 return handle_raw_source(event, source->fd, EPOLLIN, server);
1109 }
1110
1111 static int accept_connection(const char* type, int fd,
1112 SocketAddress *addr, char **hostname) {
1113 int fd2, r;
1114
1115 log_debug("Accepting new %s connection on fd:%d", type, fd);
1116 fd2 = accept4(fd, &addr->sockaddr.sa, &addr->size, SOCK_NONBLOCK|SOCK_CLOEXEC);
1117 if (fd2 < 0)
1118 return log_error_errno(errno, "accept() on fd:%d failed: %m", fd);
1119
1120 switch(socket_address_family(addr)) {
1121 case AF_INET:
1122 case AF_INET6: {
1123 _cleanup_free_ char *a = NULL;
1124 char *b;
1125
1126 r = socket_address_print(addr, &a);
1127 if (r < 0) {
1128 log_error_errno(r, "socket_address_print(): %m");
1129 close(fd2);
1130 return r;
1131 }
1132
1133 r = socknameinfo_pretty(&addr->sockaddr, addr->size, &b);
1134 if (r < 0) {
1135 log_error_errno(r, "Resolving hostname failed: %m");
1136 close(fd2);
1137 return r;
1138 }
1139
1140 log_debug("Accepted %s %s connection from %s",
1141 type,
1142 socket_address_family(addr) == AF_INET ? "IP" : "IPv6",
1143 a);
1144
1145 *hostname = b;
1146
1147 return fd2;
1148 };
1149 default:
1150 log_error("Rejected %s connection with unsupported family %d",
1151 type, socket_address_family(addr));
1152 close(fd2);
1153
1154 return -EINVAL;
1155 }
1156 }
1157
1158 static int dispatch_raw_connection_event(sd_event_source *event,
1159 int fd,
1160 uint32_t revents,
1161 void *userdata) {
1162 RemoteServer *s = userdata;
1163 int fd2;
1164 SocketAddress addr = {
1165 .size = sizeof(union sockaddr_union),
1166 .type = SOCK_STREAM,
1167 };
1168 char *hostname = NULL;
1169
1170 fd2 = accept_connection("raw", fd, &addr, &hostname);
1171 if (fd2 < 0)
1172 return fd2;
1173
1174 return add_source(s, fd2, hostname, true);
1175 }
1176
1177 /**********************************************************************
1178 **********************************************************************
1179 **********************************************************************/
1180
1181 static const char* const journal_write_split_mode_table[_JOURNAL_WRITE_SPLIT_MAX] = {
1182 [JOURNAL_WRITE_SPLIT_NONE] = "none",
1183 [JOURNAL_WRITE_SPLIT_HOST] = "host",
1184 };
1185
1186 DEFINE_PRIVATE_STRING_TABLE_LOOKUP(journal_write_split_mode, JournalWriteSplitMode);
1187 static DEFINE_CONFIG_PARSE_ENUM(config_parse_write_split_mode,
1188 journal_write_split_mode,
1189 JournalWriteSplitMode,
1190 "Failed to parse split mode setting");
1191
1192 static int parse_config(void) {
1193 const ConfigTableItem items[] = {
1194 { "Remote", "Seal", config_parse_bool, 0, &arg_seal },
1195 { "Remote", "SplitMode", config_parse_write_split_mode, 0, &arg_split_mode },
1196 { "Remote", "ServerKeyFile", config_parse_path, 0, &arg_key },
1197 { "Remote", "ServerCertificateFile", config_parse_path, 0, &arg_cert },
1198 { "Remote", "TrustedCertificateFile", config_parse_path, 0, &arg_trust },
1199 {}};
1200
1201 return config_parse_many_nulstr(PKGSYSCONFDIR "/journal-remote.conf",
1202 CONF_PATHS_NULSTR("systemd/journal-remote.conf.d"),
1203 "Remote\0", config_item_table_lookup, items,
1204 false, NULL);
1205 }
1206
1207 static void help(void) {
1208 printf("%s [OPTIONS...] {FILE|-}...\n\n"
1209 "Write external journal events to journal file(s).\n\n"
1210 " -h --help Show this help\n"
1211 " --version Show package version\n"
1212 " --url=URL Read events from systemd-journal-gatewayd at URL\n"
1213 " --getter=COMMAND Read events from the output of COMMAND\n"
1214 " --listen-raw=ADDR Listen for connections at ADDR\n"
1215 " --listen-http=ADDR Listen for HTTP connections at ADDR\n"
1216 " --listen-https=ADDR Listen for HTTPS connections at ADDR\n"
1217 " -o --output=FILE|DIR Write output to FILE or DIR/external-*.journal\n"
1218 " --compress[=BOOL] XZ-compress the output journal (default: yes)\n"
1219 " --seal[=BOOL] Use event sealing (default: no)\n"
1220 " --key=FILENAME SSL key in PEM format (default:\n"
1221 " \"" PRIV_KEY_FILE "\")\n"
1222 " --cert=FILENAME SSL certificate in PEM format (default:\n"
1223 " \"" CERT_FILE "\")\n"
1224 " --trust=FILENAME|all SSL CA certificate or disable checking (default:\n"
1225 " \"" TRUST_FILE "\")\n"
1226 " --gnutls-log=CATEGORY...\n"
1227 " Specify a list of gnutls logging categories\n"
1228 " --split-mode=none|host How many output files to create\n"
1229 "\n"
1230 "Note: file descriptors from sd_listen_fds() will be consumed, too.\n"
1231 , program_invocation_short_name);
1232 }
1233
1234 static int parse_argv(int argc, char *argv[]) {
1235 enum {
1236 ARG_VERSION = 0x100,
1237 ARG_URL,
1238 ARG_LISTEN_RAW,
1239 ARG_LISTEN_HTTP,
1240 ARG_LISTEN_HTTPS,
1241 ARG_GETTER,
1242 ARG_SPLIT_MODE,
1243 ARG_COMPRESS,
1244 ARG_SEAL,
1245 ARG_KEY,
1246 ARG_CERT,
1247 ARG_TRUST,
1248 ARG_GNUTLS_LOG,
1249 };
1250
1251 static const struct option options[] = {
1252 { "help", no_argument, NULL, 'h' },
1253 { "version", no_argument, NULL, ARG_VERSION },
1254 { "url", required_argument, NULL, ARG_URL },
1255 { "getter", required_argument, NULL, ARG_GETTER },
1256 { "listen-raw", required_argument, NULL, ARG_LISTEN_RAW },
1257 { "listen-http", required_argument, NULL, ARG_LISTEN_HTTP },
1258 { "listen-https", required_argument, NULL, ARG_LISTEN_HTTPS },
1259 { "output", required_argument, NULL, 'o' },
1260 { "split-mode", required_argument, NULL, ARG_SPLIT_MODE },
1261 { "compress", optional_argument, NULL, ARG_COMPRESS },
1262 { "seal", optional_argument, NULL, ARG_SEAL },
1263 { "key", required_argument, NULL, ARG_KEY },
1264 { "cert", required_argument, NULL, ARG_CERT },
1265 { "trust", required_argument, NULL, ARG_TRUST },
1266 { "gnutls-log", required_argument, NULL, ARG_GNUTLS_LOG },
1267 {}
1268 };
1269
1270 int c, r;
1271 bool type_a, type_b;
1272
1273 assert(argc >= 0);
1274 assert(argv);
1275
1276 while ((c = getopt_long(argc, argv, "ho:", options, NULL)) >= 0)
1277 switch(c) {
1278 case 'h':
1279 help();
1280 return 0 /* done */;
1281
1282 case ARG_VERSION:
1283 return version();
1284
1285 case ARG_URL:
1286 if (arg_url) {
1287 log_error("cannot currently set more than one --url");
1288 return -EINVAL;
1289 }
1290
1291 arg_url = optarg;
1292 break;
1293
1294 case ARG_GETTER:
1295 if (arg_getter) {
1296 log_error("cannot currently use --getter more than once");
1297 return -EINVAL;
1298 }
1299
1300 arg_getter = optarg;
1301 break;
1302
1303 case ARG_LISTEN_RAW:
1304 if (arg_listen_raw) {
1305 log_error("cannot currently use --listen-raw more than once");
1306 return -EINVAL;
1307 }
1308
1309 arg_listen_raw = optarg;
1310 break;
1311
1312 case ARG_LISTEN_HTTP:
1313 if (arg_listen_http || http_socket >= 0) {
1314 log_error("cannot currently use --listen-http more than once");
1315 return -EINVAL;
1316 }
1317
1318 r = negative_fd(optarg);
1319 if (r >= 0)
1320 http_socket = r;
1321 else
1322 arg_listen_http = optarg;
1323 break;
1324
1325 case ARG_LISTEN_HTTPS:
1326 if (arg_listen_https || https_socket >= 0) {
1327 log_error("cannot currently use --listen-https more than once");
1328 return -EINVAL;
1329 }
1330
1331 r = negative_fd(optarg);
1332 if (r >= 0)
1333 https_socket = r;
1334 else
1335 arg_listen_https = optarg;
1336
1337 break;
1338
1339 case ARG_KEY:
1340 if (arg_key) {
1341 log_error("Key file specified twice");
1342 return -EINVAL;
1343 }
1344
1345 arg_key = strdup(optarg);
1346 if (!arg_key)
1347 return log_oom();
1348
1349 break;
1350
1351 case ARG_CERT:
1352 if (arg_cert) {
1353 log_error("Certificate file specified twice");
1354 return -EINVAL;
1355 }
1356
1357 arg_cert = strdup(optarg);
1358 if (!arg_cert)
1359 return log_oom();
1360
1361 break;
1362
1363 case ARG_TRUST:
1364 if (arg_trust || arg_trust_all) {
1365 log_error("Confusing trusted CA configuration");
1366 return -EINVAL;
1367 }
1368
1369 if (streq(optarg, "all"))
1370 arg_trust_all = true;
1371 else {
1372 #ifdef HAVE_GNUTLS
1373 arg_trust = strdup(optarg);
1374 if (!arg_trust)
1375 return log_oom();
1376 #else
1377 log_error("Option --trust is not available.");
1378 return -EINVAL;
1379 #endif
1380 }
1381
1382 break;
1383
1384 case 'o':
1385 if (arg_output) {
1386 log_error("cannot use --output/-o more than once");
1387 return -EINVAL;
1388 }
1389
1390 arg_output = optarg;
1391 break;
1392
1393 case ARG_SPLIT_MODE:
1394 arg_split_mode = journal_write_split_mode_from_string(optarg);
1395 if (arg_split_mode == _JOURNAL_WRITE_SPLIT_INVALID) {
1396 log_error("Invalid split mode: %s", optarg);
1397 return -EINVAL;
1398 }
1399 break;
1400
1401 case ARG_COMPRESS:
1402 if (optarg) {
1403 r = parse_boolean(optarg);
1404 if (r < 0) {
1405 log_error("Failed to parse --compress= parameter.");
1406 return -EINVAL;
1407 }
1408
1409 arg_compress = !!r;
1410 } else
1411 arg_compress = true;
1412
1413 break;
1414
1415 case ARG_SEAL:
1416 if (optarg) {
1417 r = parse_boolean(optarg);
1418 if (r < 0) {
1419 log_error("Failed to parse --seal= parameter.");
1420 return -EINVAL;
1421 }
1422
1423 arg_seal = !!r;
1424 } else
1425 arg_seal = true;
1426
1427 break;
1428
1429 case ARG_GNUTLS_LOG: {
1430 #ifdef HAVE_GNUTLS
1431 const char* p = optarg;
1432 for (;;) {
1433 _cleanup_free_ char *word = NULL;
1434
1435 r = extract_first_word(&p, &word, ",", 0);
1436 if (r < 0)
1437 return log_error_errno(r, "Failed to parse --gnutls-log= argument: %m");
1438
1439 if (r == 0)
1440 break;
1441
1442 if (strv_push(&arg_gnutls_log, word) < 0)
1443 return log_oom();
1444
1445 word = NULL;
1446 }
1447 break;
1448 #else
1449 log_error("Option --gnutls-log is not available.");
1450 return -EINVAL;
1451 #endif
1452 }
1453
1454 case '?':
1455 return -EINVAL;
1456
1457 default:
1458 assert_not_reached("Unknown option code.");
1459 }
1460
1461 if (optind < argc)
1462 arg_files = argv + optind;
1463
1464 type_a = arg_getter || !strv_isempty(arg_files);
1465 type_b = arg_url
1466 || arg_listen_raw
1467 || arg_listen_http || arg_listen_https
1468 || sd_listen_fds(false) > 0;
1469 if (type_a && type_b) {
1470 log_error("Cannot use file input or --getter with "
1471 "--arg-listen-... or socket activation.");
1472 return -EINVAL;
1473 }
1474 if (type_a) {
1475 if (!arg_output) {
1476 log_error("Option --output must be specified with file input or --getter.");
1477 return -EINVAL;
1478 }
1479
1480 arg_split_mode = JOURNAL_WRITE_SPLIT_NONE;
1481 }
1482
1483 if (arg_split_mode == JOURNAL_WRITE_SPLIT_NONE
1484 && arg_output && is_dir(arg_output, true) > 0) {
1485 log_error("For SplitMode=none, output must be a file.");
1486 return -EINVAL;
1487 }
1488
1489 if (arg_split_mode == JOURNAL_WRITE_SPLIT_HOST
1490 && arg_output && is_dir(arg_output, true) <= 0) {
1491 log_error("For SplitMode=host, output must be a directory.");
1492 return -EINVAL;
1493 }
1494
1495 log_debug("Full config: SplitMode=%s Key=%s Cert=%s Trust=%s",
1496 journal_write_split_mode_to_string(arg_split_mode),
1497 strna(arg_key),
1498 strna(arg_cert),
1499 strna(arg_trust));
1500
1501 return 1 /* work to do */;
1502 }
1503
1504 static int load_certificates(char **key, char **cert, char **trust) {
1505 int r;
1506
1507 r = read_full_file(arg_key ?: PRIV_KEY_FILE, key, NULL);
1508 if (r < 0)
1509 return log_error_errno(r, "Failed to read key from file '%s': %m",
1510 arg_key ?: PRIV_KEY_FILE);
1511
1512 r = read_full_file(arg_cert ?: CERT_FILE, cert, NULL);
1513 if (r < 0)
1514 return log_error_errno(r, "Failed to read certificate from file '%s': %m",
1515 arg_cert ?: CERT_FILE);
1516
1517 if (arg_trust_all)
1518 log_info("Certificate checking disabled.");
1519 else {
1520 r = read_full_file(arg_trust ?: TRUST_FILE, trust, NULL);
1521 if (r < 0)
1522 return log_error_errno(r, "Failed to read CA certificate file '%s': %m",
1523 arg_trust ?: TRUST_FILE);
1524 }
1525
1526 return 0;
1527 }
1528
1529 int main(int argc, char **argv) {
1530 RemoteServer s = {};
1531 int r;
1532 _cleanup_free_ char *key = NULL, *cert = NULL, *trust = NULL;
1533
1534 log_show_color(true);
1535 log_parse_environment();
1536
1537 r = parse_config();
1538 if (r < 0)
1539 return EXIT_FAILURE;
1540
1541 r = parse_argv(argc, argv);
1542 if (r <= 0)
1543 return r == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
1544
1545
1546 if (arg_listen_http || arg_listen_https) {
1547 r = setup_gnutls_logger(arg_gnutls_log);
1548 if (r < 0)
1549 return EXIT_FAILURE;
1550 }
1551
1552 if (arg_listen_https || https_socket >= 0)
1553 if (load_certificates(&key, &cert, &trust) < 0)
1554 return EXIT_FAILURE;
1555
1556 if (remoteserver_init(&s, key, cert, trust) < 0)
1557 return EXIT_FAILURE;
1558
1559 r = sd_event_set_watchdog(s.events, true);
1560 if (r < 0)
1561 log_error_errno(r, "Failed to enable watchdog: %m");
1562 else
1563 log_debug("Watchdog is %sd.", enable_disable(r > 0));
1564
1565 log_debug("%s running as pid "PID_FMT,
1566 program_invocation_short_name, getpid());
1567 sd_notify(false,
1568 "READY=1\n"
1569 "STATUS=Processing requests...");
1570
1571 while (s.active) {
1572 r = sd_event_get_state(s.events);
1573 if (r < 0)
1574 break;
1575 if (r == SD_EVENT_FINISHED)
1576 break;
1577
1578 r = sd_event_run(s.events, -1);
1579 if (r < 0) {
1580 log_error_errno(r, "Failed to run event loop: %m");
1581 break;
1582 }
1583 }
1584
1585 sd_notifyf(false,
1586 "STOPPING=1\n"
1587 "STATUS=Shutting down after writing %" PRIu64 " entries...", s.event_count);
1588 log_info("Finishing after writing %" PRIu64 " entries", s.event_count);
1589
1590 server_destroy(&s);
1591
1592 free(arg_key);
1593 free(arg_cert);
1594 free(arg_trust);
1595
1596 return r >= 0 ? EXIT_SUCCESS : EXIT_FAILURE;
1597 }
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