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Merge pull request #6472 from yuwata/journal-gateway-fix
[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_cached();
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 = journal_importer_push_data(&source->importer,
516 upload_data, *upload_data_size);
517 if (r < 0)
518 return mhd_respond_oom(connection);
519
520 *upload_data_size = 0;
521 } else
522 finished = true;
523
524 for (;;) {
525 r = process_source(source, arg_compress, arg_seal);
526 if (r == -EAGAIN)
527 break;
528 else if (r < 0) {
529 log_warning("Failed to process data for connection %p", connection);
530 if (r == -E2BIG)
531 return mhd_respondf(connection,
532 r, MHD_HTTP_PAYLOAD_TOO_LARGE,
533 "Entry is too large, maximum is " STRINGIFY(DATA_SIZE_MAX) " bytes.");
534 else
535 return mhd_respondf(connection,
536 r, MHD_HTTP_UNPROCESSABLE_ENTITY,
537 "Processing failed: %m.");
538 }
539 }
540
541 if (!finished)
542 return MHD_YES;
543
544 /* The upload is finished */
545
546 remaining = journal_importer_bytes_remaining(&source->importer);
547 if (remaining > 0) {
548 log_warning("Premature EOF byte. %zu bytes lost.", remaining);
549 return mhd_respondf(connection,
550 0, MHD_HTTP_EXPECTATION_FAILED,
551 "Premature EOF. %zu bytes of trailing data not processed.",
552 remaining);
553 }
554
555 return mhd_respond(connection, MHD_HTTP_ACCEPTED, "OK.");
556 };
557
558 static int request_handler(
559 void *cls,
560 struct MHD_Connection *connection,
561 const char *url,
562 const char *method,
563 const char *version,
564 const char *upload_data,
565 size_t *upload_data_size,
566 void **connection_cls) {
567
568 const char *header;
569 int r, code, fd;
570 _cleanup_free_ char *hostname = NULL;
571
572 assert(connection);
573 assert(connection_cls);
574 assert(url);
575 assert(method);
576
577 log_trace("Handling a connection %s %s %s", method, url, version);
578
579 if (*connection_cls)
580 return process_http_upload(connection,
581 upload_data, upload_data_size,
582 *connection_cls);
583
584 if (!streq(method, "POST"))
585 return mhd_respond(connection, MHD_HTTP_NOT_ACCEPTABLE, "Unsupported method.");
586
587 if (!streq(url, "/upload"))
588 return mhd_respond(connection, MHD_HTTP_NOT_FOUND, "Not found.");
589
590 header = MHD_lookup_connection_value(connection,
591 MHD_HEADER_KIND, "Content-Type");
592 if (!header || !streq(header, "application/vnd.fdo.journal"))
593 return mhd_respond(connection, MHD_HTTP_UNSUPPORTED_MEDIA_TYPE,
594 "Content-Type: application/vnd.fdo.journal is required.");
595
596 {
597 const union MHD_ConnectionInfo *ci;
598
599 ci = MHD_get_connection_info(connection,
600 MHD_CONNECTION_INFO_CONNECTION_FD);
601 if (!ci) {
602 log_error("MHD_get_connection_info failed: cannot get remote fd");
603 return mhd_respond(connection, MHD_HTTP_INTERNAL_SERVER_ERROR,
604 "Cannot check remote address.");
605 }
606
607 fd = ci->connect_fd;
608 assert(fd >= 0);
609 }
610
611 if (server->check_trust) {
612 r = check_permissions(connection, &code, &hostname);
613 if (r < 0)
614 return code;
615 } else {
616 r = getpeername_pretty(fd, false, &hostname);
617 if (r < 0)
618 return mhd_respond(connection, MHD_HTTP_INTERNAL_SERVER_ERROR,
619 "Cannot check remote hostname.");
620 }
621
622 assert(hostname);
623
624 r = request_meta(connection_cls, fd, hostname);
625 if (r == -ENOMEM)
626 return respond_oom(connection);
627 else if (r < 0)
628 return mhd_respondf(connection, r, MHD_HTTP_INTERNAL_SERVER_ERROR, "%m");
629
630 hostname = NULL;
631 return MHD_YES;
632 }
633
634 static int setup_microhttpd_server(RemoteServer *s,
635 int fd,
636 const char *key,
637 const char *cert,
638 const char *trust) {
639 struct MHD_OptionItem opts[] = {
640 { MHD_OPTION_NOTIFY_COMPLETED, (intptr_t) request_meta_free},
641 { MHD_OPTION_EXTERNAL_LOGGER, (intptr_t) microhttpd_logger},
642 { MHD_OPTION_LISTEN_SOCKET, fd},
643 { MHD_OPTION_CONNECTION_MEMORY_LIMIT, 128*1024},
644 { MHD_OPTION_END},
645 { MHD_OPTION_END},
646 { MHD_OPTION_END},
647 { MHD_OPTION_END},
648 { MHD_OPTION_END}};
649 int opts_pos = 4;
650 int flags =
651 MHD_USE_DEBUG |
652 MHD_USE_DUAL_STACK |
653 MHD_USE_EPOLL |
654 MHD_USE_PEDANTIC_CHECKS |
655 MHD_USE_ITC;
656
657 const union MHD_DaemonInfo *info;
658 int r, epoll_fd;
659 MHDDaemonWrapper *d;
660
661 assert(fd >= 0);
662
663 r = fd_nonblock(fd, true);
664 if (r < 0)
665 return log_error_errno(r, "Failed to make fd:%d nonblocking: %m", fd);
666
667 /* MHD_OPTION_STRICT_FOR_CLIENT is introduced in microhttpd 0.9.54,
668 * and MHD_USE_PEDANTIC_CHECKS will be deprecated in future. */
669 #ifdef MHD_USE_PEDANTIC_CHECKS
670 opts[opts_pos++] = (struct MHD_OptionItem)
671 {MHD_OPTION_STRICT_FOR_CLIENT, 1};
672 #else
673 flags |= MHD_USE_PEDANTIC_CHECKS;
674 #endif
675
676 if (key) {
677 assert(cert);
678
679 opts[opts_pos++] = (struct MHD_OptionItem)
680 {MHD_OPTION_HTTPS_MEM_KEY, 0, (char*) key};
681 opts[opts_pos++] = (struct MHD_OptionItem)
682 {MHD_OPTION_HTTPS_MEM_CERT, 0, (char*) cert};
683
684 flags |= MHD_USE_TLS;
685
686 if (trust)
687 opts[opts_pos++] = (struct MHD_OptionItem)
688 {MHD_OPTION_HTTPS_MEM_TRUST, 0, (char*) trust};
689 }
690
691 d = new(MHDDaemonWrapper, 1);
692 if (!d)
693 return log_oom();
694
695 d->fd = (uint64_t) fd;
696
697 d->daemon = MHD_start_daemon(flags, 0,
698 NULL, NULL,
699 request_handler, NULL,
700 MHD_OPTION_ARRAY, opts,
701 MHD_OPTION_END);
702 if (!d->daemon) {
703 log_error("Failed to start µhttp daemon");
704 r = -EINVAL;
705 goto error;
706 }
707
708 log_debug("Started MHD %s daemon on fd:%d (wrapper @ %p)",
709 key ? "HTTPS" : "HTTP", fd, d);
710
711
712 info = MHD_get_daemon_info(d->daemon, MHD_DAEMON_INFO_EPOLL_FD_LINUX_ONLY);
713 if (!info) {
714 log_error("µhttp returned NULL daemon info");
715 r = -EOPNOTSUPP;
716 goto error;
717 }
718
719 epoll_fd = info->listen_fd;
720 if (epoll_fd < 0) {
721 log_error("µhttp epoll fd is invalid");
722 r = -EUCLEAN;
723 goto error;
724 }
725
726 r = sd_event_add_io(s->events, &d->event,
727 epoll_fd, EPOLLIN,
728 dispatch_http_event, d);
729 if (r < 0) {
730 log_error_errno(r, "Failed to add event callback: %m");
731 goto error;
732 }
733
734 r = sd_event_source_set_description(d->event, "epoll-fd");
735 if (r < 0) {
736 log_error_errno(r, "Failed to set source name: %m");
737 goto error;
738 }
739
740 r = hashmap_ensure_allocated(&s->daemons, &uint64_hash_ops);
741 if (r < 0) {
742 log_oom();
743 goto error;
744 }
745
746 r = hashmap_put(s->daemons, &d->fd, d);
747 if (r < 0) {
748 log_error_errno(r, "Failed to add daemon to hashmap: %m");
749 goto error;
750 }
751
752 s->active++;
753 return 0;
754
755 error:
756 MHD_stop_daemon(d->daemon);
757 free(d->daemon);
758 free(d);
759 return r;
760 }
761
762 static int setup_microhttpd_socket(RemoteServer *s,
763 const char *address,
764 const char *key,
765 const char *cert,
766 const char *trust) {
767 int fd;
768
769 fd = make_socket_fd(LOG_DEBUG, address, SOCK_STREAM, SOCK_CLOEXEC);
770 if (fd < 0)
771 return fd;
772
773 return setup_microhttpd_server(s, fd, key, cert, trust);
774 }
775
776 static int dispatch_http_event(sd_event_source *event,
777 int fd,
778 uint32_t revents,
779 void *userdata) {
780 MHDDaemonWrapper *d = userdata;
781 int r;
782
783 assert(d);
784
785 r = MHD_run(d->daemon);
786 if (r == MHD_NO) {
787 log_error("MHD_run failed!");
788 // XXX: unregister daemon
789 return -EINVAL;
790 }
791
792 return 1; /* work to do */
793 }
794
795 /**********************************************************************
796 **********************************************************************
797 **********************************************************************/
798
799 static int setup_signals(RemoteServer *s) {
800 int r;
801
802 assert(s);
803
804 assert_se(sigprocmask_many(SIG_SETMASK, NULL, SIGINT, SIGTERM, -1) >= 0);
805
806 r = sd_event_add_signal(s->events, &s->sigterm_event, SIGTERM, NULL, s);
807 if (r < 0)
808 return r;
809
810 r = sd_event_add_signal(s->events, &s->sigint_event, SIGINT, NULL, s);
811 if (r < 0)
812 return r;
813
814 return 0;
815 }
816
817 static int negative_fd(const char *spec) {
818 /* Return a non-positive number as its inverse, -EINVAL otherwise. */
819
820 int fd, r;
821
822 r = safe_atoi(spec, &fd);
823 if (r < 0)
824 return r;
825
826 if (fd > 0)
827 return -EINVAL;
828 else
829 return -fd;
830 }
831
832 static int remoteserver_init(RemoteServer *s,
833 const char* key,
834 const char* cert,
835 const char* trust) {
836 int r, n, fd;
837 char **file;
838
839 assert(s);
840
841 if ((arg_listen_raw || arg_listen_http) && trust) {
842 log_error("Option --trust makes all non-HTTPS connections untrusted.");
843 return -EINVAL;
844 }
845
846 r = sd_event_default(&s->events);
847 if (r < 0)
848 return log_error_errno(r, "Failed to allocate event loop: %m");
849
850 setup_signals(s);
851
852 assert(server == NULL);
853 server = s;
854
855 r = init_writer_hashmap(s);
856 if (r < 0)
857 return r;
858
859 n = sd_listen_fds(true);
860 if (n < 0)
861 return log_error_errno(n, "Failed to read listening file descriptors from environment: %m");
862 else
863 log_debug("Received %d descriptors", n);
864
865 if (MAX(http_socket, https_socket) >= SD_LISTEN_FDS_START + n) {
866 log_error("Received fewer sockets than expected");
867 return -EBADFD;
868 }
869
870 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) {
871 if (sd_is_socket(fd, AF_UNSPEC, 0, true)) {
872 log_debug("Received a listening socket (fd:%d)", fd);
873
874 if (fd == http_socket)
875 r = setup_microhttpd_server(s, fd, NULL, NULL, NULL);
876 else if (fd == https_socket)
877 r = setup_microhttpd_server(s, fd, key, cert, trust);
878 else
879 r = add_raw_socket(s, fd);
880 } else if (sd_is_socket(fd, AF_UNSPEC, 0, false)) {
881 char *hostname;
882
883 r = getpeername_pretty(fd, false, &hostname);
884 if (r < 0)
885 return log_error_errno(r, "Failed to retrieve remote name: %m");
886
887 log_debug("Received a connection socket (fd:%d) from %s", fd, hostname);
888
889 r = add_source(s, fd, hostname, true);
890 } else {
891 log_error("Unknown socket passed on fd:%d", fd);
892
893 return -EINVAL;
894 }
895
896 if (r < 0)
897 return log_error_errno(r, "Failed to register socket (fd:%d): %m",
898 fd);
899 }
900
901 if (arg_getter) {
902 log_info("Spawning getter %s...", arg_getter);
903 fd = spawn_getter(arg_getter);
904 if (fd < 0)
905 return fd;
906
907 r = add_source(s, fd, (char*) arg_output, false);
908 if (r < 0)
909 return r;
910 }
911
912 if (arg_url) {
913 const char *url;
914 char *hostname, *p;
915
916 if (!strstr(arg_url, "/entries")) {
917 if (endswith(arg_url, "/"))
918 url = strjoina(arg_url, "entries");
919 else
920 url = strjoina(arg_url, "/entries");
921 }
922 else
923 url = strdupa(arg_url);
924
925 log_info("Spawning curl %s...", url);
926 fd = spawn_curl(url);
927 if (fd < 0)
928 return fd;
929
930 hostname =
931 startswith(arg_url, "https://") ?:
932 startswith(arg_url, "http://") ?:
933 arg_url;
934
935 hostname = strdupa(hostname);
936 if ((p = strchr(hostname, '/')))
937 *p = '\0';
938 if ((p = strchr(hostname, ':')))
939 *p = '\0';
940
941 r = add_source(s, fd, hostname, false);
942 if (r < 0)
943 return r;
944 }
945
946 if (arg_listen_raw) {
947 log_debug("Listening on a socket...");
948 r = setup_raw_socket(s, arg_listen_raw);
949 if (r < 0)
950 return r;
951 }
952
953 if (arg_listen_http) {
954 r = setup_microhttpd_socket(s, arg_listen_http, NULL, NULL, NULL);
955 if (r < 0)
956 return r;
957 }
958
959 if (arg_listen_https) {
960 r = setup_microhttpd_socket(s, arg_listen_https, key, cert, trust);
961 if (r < 0)
962 return r;
963 }
964
965 STRV_FOREACH(file, arg_files) {
966 const char *output_name;
967
968 if (streq(*file, "-")) {
969 log_debug("Using standard input as source.");
970
971 fd = STDIN_FILENO;
972 output_name = "stdin";
973 } else {
974 log_debug("Reading file %s...", *file);
975
976 fd = open(*file, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NONBLOCK);
977 if (fd < 0)
978 return log_error_errno(errno, "Failed to open %s: %m", *file);
979 output_name = *file;
980 }
981
982 r = add_source(s, fd, (char*) output_name, false);
983 if (r < 0)
984 return r;
985 }
986
987 if (s->active == 0) {
988 log_error("Zero sources specified");
989 return -EINVAL;
990 }
991
992 if (arg_split_mode == JOURNAL_WRITE_SPLIT_NONE) {
993 /* In this case we know what the writer will be
994 called, so we can create it and verify that we can
995 create output as expected. */
996 r = get_writer(s, NULL, &s->_single_writer);
997 if (r < 0)
998 return r;
999 }
1000
1001 return 0;
1002 }
1003
1004 static void server_destroy(RemoteServer *s) {
1005 size_t i;
1006 MHDDaemonWrapper *d;
1007
1008 while ((d = hashmap_steal_first(s->daemons))) {
1009 MHD_stop_daemon(d->daemon);
1010 sd_event_source_unref(d->event);
1011 free(d);
1012 }
1013
1014 hashmap_free(s->daemons);
1015
1016 assert(s->sources_size == 0 || s->sources);
1017 for (i = 0; i < s->sources_size; i++)
1018 remove_source(s, i);
1019 free(s->sources);
1020
1021 writer_unref(s->_single_writer);
1022 hashmap_free(s->writers);
1023
1024 sd_event_source_unref(s->sigterm_event);
1025 sd_event_source_unref(s->sigint_event);
1026 sd_event_source_unref(s->listen_event);
1027 sd_event_unref(s->events);
1028
1029 /* fds that we're listening on remain open... */
1030 }
1031
1032 /**********************************************************************
1033 **********************************************************************
1034 **********************************************************************/
1035
1036 static int handle_raw_source(sd_event_source *event,
1037 int fd,
1038 uint32_t revents,
1039 RemoteServer *s) {
1040
1041 RemoteSource *source;
1042 int r;
1043
1044 /* Returns 1 if there might be more data pending,
1045 * 0 if data is currently exhausted, negative on error.
1046 */
1047
1048 assert(fd >= 0 && fd < (ssize_t) s->sources_size);
1049 source = s->sources[fd];
1050 assert(source->importer.fd == fd);
1051
1052 r = process_source(source, arg_compress, arg_seal);
1053 if (journal_importer_eof(&source->importer)) {
1054 size_t remaining;
1055
1056 log_debug("EOF reached with source %s (fd=%d)",
1057 source->importer.name, source->importer.fd);
1058
1059 remaining = journal_importer_bytes_remaining(&source->importer);
1060 if (remaining > 0)
1061 log_notice("Premature EOF. %zu bytes lost.", remaining);
1062 remove_source(s, source->importer.fd);
1063 log_debug("%zu active sources remaining", s->active);
1064 return 0;
1065 } else if (r == -E2BIG) {
1066 log_notice_errno(E2BIG, "Entry too big, skipped");
1067 return 1;
1068 } else if (r == -EAGAIN) {
1069 return 0;
1070 } else if (r < 0) {
1071 log_debug_errno(r, "Closing connection: %m");
1072 remove_source(server, fd);
1073 return 0;
1074 } else
1075 return 1;
1076 }
1077
1078 static int dispatch_raw_source_until_block(sd_event_source *event,
1079 void *userdata) {
1080 RemoteSource *source = userdata;
1081 int r;
1082
1083 /* Make sure event stays around even if source is destroyed */
1084 sd_event_source_ref(event);
1085
1086 r = handle_raw_source(event, source->importer.fd, EPOLLIN, server);
1087 if (r != 1)
1088 /* No more data for now */
1089 sd_event_source_set_enabled(event, SD_EVENT_OFF);
1090
1091 sd_event_source_unref(event);
1092
1093 return r;
1094 }
1095
1096 static int dispatch_raw_source_event(sd_event_source *event,
1097 int fd,
1098 uint32_t revents,
1099 void *userdata) {
1100 RemoteSource *source = userdata;
1101 int r;
1102
1103 assert(source->event);
1104 assert(source->buffer_event);
1105
1106 r = handle_raw_source(event, fd, EPOLLIN, server);
1107 if (r == 1)
1108 /* Might have more data. We need to rerun the handler
1109 * until we are sure the buffer is exhausted. */
1110 sd_event_source_set_enabled(source->buffer_event, SD_EVENT_ON);
1111
1112 return r;
1113 }
1114
1115 static int dispatch_blocking_source_event(sd_event_source *event,
1116 void *userdata) {
1117 RemoteSource *source = userdata;
1118
1119 return handle_raw_source(event, source->importer.fd, EPOLLIN, server);
1120 }
1121
1122 static int accept_connection(const char* type, int fd,
1123 SocketAddress *addr, char **hostname) {
1124 int fd2, r;
1125
1126 log_debug("Accepting new %s connection on fd:%d", type, fd);
1127 fd2 = accept4(fd, &addr->sockaddr.sa, &addr->size, SOCK_NONBLOCK|SOCK_CLOEXEC);
1128 if (fd2 < 0)
1129 return log_error_errno(errno, "accept() on fd:%d failed: %m", fd);
1130
1131 switch(socket_address_family(addr)) {
1132 case AF_INET:
1133 case AF_INET6: {
1134 _cleanup_free_ char *a = NULL;
1135 char *b;
1136
1137 r = socket_address_print(addr, &a);
1138 if (r < 0) {
1139 log_error_errno(r, "socket_address_print(): %m");
1140 close(fd2);
1141 return r;
1142 }
1143
1144 r = socknameinfo_pretty(&addr->sockaddr, addr->size, &b);
1145 if (r < 0) {
1146 log_error_errno(r, "Resolving hostname failed: %m");
1147 close(fd2);
1148 return r;
1149 }
1150
1151 log_debug("Accepted %s %s connection from %s",
1152 type,
1153 socket_address_family(addr) == AF_INET ? "IP" : "IPv6",
1154 a);
1155
1156 *hostname = b;
1157
1158 return fd2;
1159 };
1160 default:
1161 log_error("Rejected %s connection with unsupported family %d",
1162 type, socket_address_family(addr));
1163 close(fd2);
1164
1165 return -EINVAL;
1166 }
1167 }
1168
1169 static int dispatch_raw_connection_event(sd_event_source *event,
1170 int fd,
1171 uint32_t revents,
1172 void *userdata) {
1173 RemoteServer *s = userdata;
1174 int fd2;
1175 SocketAddress addr = {
1176 .size = sizeof(union sockaddr_union),
1177 .type = SOCK_STREAM,
1178 };
1179 char *hostname = NULL;
1180
1181 fd2 = accept_connection("raw", fd, &addr, &hostname);
1182 if (fd2 < 0)
1183 return fd2;
1184
1185 return add_source(s, fd2, hostname, true);
1186 }
1187
1188 /**********************************************************************
1189 **********************************************************************
1190 **********************************************************************/
1191
1192 static const char* const journal_write_split_mode_table[_JOURNAL_WRITE_SPLIT_MAX] = {
1193 [JOURNAL_WRITE_SPLIT_NONE] = "none",
1194 [JOURNAL_WRITE_SPLIT_HOST] = "host",
1195 };
1196
1197 DEFINE_PRIVATE_STRING_TABLE_LOOKUP(journal_write_split_mode, JournalWriteSplitMode);
1198 static DEFINE_CONFIG_PARSE_ENUM(config_parse_write_split_mode,
1199 journal_write_split_mode,
1200 JournalWriteSplitMode,
1201 "Failed to parse split mode setting");
1202
1203 static int parse_config(void) {
1204 const ConfigTableItem items[] = {
1205 { "Remote", "Seal", config_parse_bool, 0, &arg_seal },
1206 { "Remote", "SplitMode", config_parse_write_split_mode, 0, &arg_split_mode },
1207 { "Remote", "ServerKeyFile", config_parse_path, 0, &arg_key },
1208 { "Remote", "ServerCertificateFile", config_parse_path, 0, &arg_cert },
1209 { "Remote", "TrustedCertificateFile", config_parse_path, 0, &arg_trust },
1210 {}};
1211
1212 return config_parse_many_nulstr(PKGSYSCONFDIR "/journal-remote.conf",
1213 CONF_PATHS_NULSTR("systemd/journal-remote.conf.d"),
1214 "Remote\0", config_item_table_lookup, items,
1215 false, NULL);
1216 }
1217
1218 static void help(void) {
1219 printf("%s [OPTIONS...] {FILE|-}...\n\n"
1220 "Write external journal events to journal file(s).\n\n"
1221 " -h --help Show this help\n"
1222 " --version Show package version\n"
1223 " --url=URL Read events from systemd-journal-gatewayd at URL\n"
1224 " --getter=COMMAND Read events from the output of COMMAND\n"
1225 " --listen-raw=ADDR Listen for connections at ADDR\n"
1226 " --listen-http=ADDR Listen for HTTP connections at ADDR\n"
1227 " --listen-https=ADDR Listen for HTTPS connections at ADDR\n"
1228 " -o --output=FILE|DIR Write output to FILE or DIR/external-*.journal\n"
1229 " --compress[=BOOL] XZ-compress the output journal (default: yes)\n"
1230 " --seal[=BOOL] Use event sealing (default: no)\n"
1231 " --key=FILENAME SSL key in PEM format (default:\n"
1232 " \"" PRIV_KEY_FILE "\")\n"
1233 " --cert=FILENAME SSL certificate in PEM format (default:\n"
1234 " \"" CERT_FILE "\")\n"
1235 " --trust=FILENAME|all SSL CA certificate or disable checking (default:\n"
1236 " \"" TRUST_FILE "\")\n"
1237 " --gnutls-log=CATEGORY...\n"
1238 " Specify a list of gnutls logging categories\n"
1239 " --split-mode=none|host How many output files to create\n"
1240 "\n"
1241 "Note: file descriptors from sd_listen_fds() will be consumed, too.\n"
1242 , program_invocation_short_name);
1243 }
1244
1245 static int parse_argv(int argc, char *argv[]) {
1246 enum {
1247 ARG_VERSION = 0x100,
1248 ARG_URL,
1249 ARG_LISTEN_RAW,
1250 ARG_LISTEN_HTTP,
1251 ARG_LISTEN_HTTPS,
1252 ARG_GETTER,
1253 ARG_SPLIT_MODE,
1254 ARG_COMPRESS,
1255 ARG_SEAL,
1256 ARG_KEY,
1257 ARG_CERT,
1258 ARG_TRUST,
1259 ARG_GNUTLS_LOG,
1260 };
1261
1262 static const struct option options[] = {
1263 { "help", no_argument, NULL, 'h' },
1264 { "version", no_argument, NULL, ARG_VERSION },
1265 { "url", required_argument, NULL, ARG_URL },
1266 { "getter", required_argument, NULL, ARG_GETTER },
1267 { "listen-raw", required_argument, NULL, ARG_LISTEN_RAW },
1268 { "listen-http", required_argument, NULL, ARG_LISTEN_HTTP },
1269 { "listen-https", required_argument, NULL, ARG_LISTEN_HTTPS },
1270 { "output", required_argument, NULL, 'o' },
1271 { "split-mode", required_argument, NULL, ARG_SPLIT_MODE },
1272 { "compress", optional_argument, NULL, ARG_COMPRESS },
1273 { "seal", optional_argument, NULL, ARG_SEAL },
1274 { "key", required_argument, NULL, ARG_KEY },
1275 { "cert", required_argument, NULL, ARG_CERT },
1276 { "trust", required_argument, NULL, ARG_TRUST },
1277 { "gnutls-log", required_argument, NULL, ARG_GNUTLS_LOG },
1278 {}
1279 };
1280
1281 int c, r;
1282 bool type_a, type_b;
1283
1284 assert(argc >= 0);
1285 assert(argv);
1286
1287 while ((c = getopt_long(argc, argv, "ho:", options, NULL)) >= 0)
1288 switch(c) {
1289 case 'h':
1290 help();
1291 return 0 /* done */;
1292
1293 case ARG_VERSION:
1294 return version();
1295
1296 case ARG_URL:
1297 if (arg_url) {
1298 log_error("cannot currently set more than one --url");
1299 return -EINVAL;
1300 }
1301
1302 arg_url = optarg;
1303 break;
1304
1305 case ARG_GETTER:
1306 if (arg_getter) {
1307 log_error("cannot currently use --getter more than once");
1308 return -EINVAL;
1309 }
1310
1311 arg_getter = optarg;
1312 break;
1313
1314 case ARG_LISTEN_RAW:
1315 if (arg_listen_raw) {
1316 log_error("cannot currently use --listen-raw more than once");
1317 return -EINVAL;
1318 }
1319
1320 arg_listen_raw = optarg;
1321 break;
1322
1323 case ARG_LISTEN_HTTP:
1324 if (arg_listen_http || http_socket >= 0) {
1325 log_error("cannot currently use --listen-http more than once");
1326 return -EINVAL;
1327 }
1328
1329 r = negative_fd(optarg);
1330 if (r >= 0)
1331 http_socket = r;
1332 else
1333 arg_listen_http = optarg;
1334 break;
1335
1336 case ARG_LISTEN_HTTPS:
1337 if (arg_listen_https || https_socket >= 0) {
1338 log_error("cannot currently use --listen-https more than once");
1339 return -EINVAL;
1340 }
1341
1342 r = negative_fd(optarg);
1343 if (r >= 0)
1344 https_socket = r;
1345 else
1346 arg_listen_https = optarg;
1347
1348 break;
1349
1350 case ARG_KEY:
1351 if (arg_key) {
1352 log_error("Key file specified twice");
1353 return -EINVAL;
1354 }
1355
1356 arg_key = strdup(optarg);
1357 if (!arg_key)
1358 return log_oom();
1359
1360 break;
1361
1362 case ARG_CERT:
1363 if (arg_cert) {
1364 log_error("Certificate file specified twice");
1365 return -EINVAL;
1366 }
1367
1368 arg_cert = strdup(optarg);
1369 if (!arg_cert)
1370 return log_oom();
1371
1372 break;
1373
1374 case ARG_TRUST:
1375 if (arg_trust || arg_trust_all) {
1376 log_error("Confusing trusted CA configuration");
1377 return -EINVAL;
1378 }
1379
1380 if (streq(optarg, "all"))
1381 arg_trust_all = true;
1382 else {
1383 #ifdef HAVE_GNUTLS
1384 arg_trust = strdup(optarg);
1385 if (!arg_trust)
1386 return log_oom();
1387 #else
1388 log_error("Option --trust is not available.");
1389 return -EINVAL;
1390 #endif
1391 }
1392
1393 break;
1394
1395 case 'o':
1396 if (arg_output) {
1397 log_error("cannot use --output/-o more than once");
1398 return -EINVAL;
1399 }
1400
1401 arg_output = optarg;
1402 break;
1403
1404 case ARG_SPLIT_MODE:
1405 arg_split_mode = journal_write_split_mode_from_string(optarg);
1406 if (arg_split_mode == _JOURNAL_WRITE_SPLIT_INVALID) {
1407 log_error("Invalid split mode: %s", optarg);
1408 return -EINVAL;
1409 }
1410 break;
1411
1412 case ARG_COMPRESS:
1413 if (optarg) {
1414 r = parse_boolean(optarg);
1415 if (r < 0) {
1416 log_error("Failed to parse --compress= parameter.");
1417 return -EINVAL;
1418 }
1419
1420 arg_compress = !!r;
1421 } else
1422 arg_compress = true;
1423
1424 break;
1425
1426 case ARG_SEAL:
1427 if (optarg) {
1428 r = parse_boolean(optarg);
1429 if (r < 0) {
1430 log_error("Failed to parse --seal= parameter.");
1431 return -EINVAL;
1432 }
1433
1434 arg_seal = !!r;
1435 } else
1436 arg_seal = true;
1437
1438 break;
1439
1440 case ARG_GNUTLS_LOG: {
1441 #ifdef HAVE_GNUTLS
1442 const char* p = optarg;
1443 for (;;) {
1444 _cleanup_free_ char *word = NULL;
1445
1446 r = extract_first_word(&p, &word, ",", 0);
1447 if (r < 0)
1448 return log_error_errno(r, "Failed to parse --gnutls-log= argument: %m");
1449
1450 if (r == 0)
1451 break;
1452
1453 if (strv_push(&arg_gnutls_log, word) < 0)
1454 return log_oom();
1455
1456 word = NULL;
1457 }
1458 break;
1459 #else
1460 log_error("Option --gnutls-log is not available.");
1461 return -EINVAL;
1462 #endif
1463 }
1464
1465 case '?':
1466 return -EINVAL;
1467
1468 default:
1469 assert_not_reached("Unknown option code.");
1470 }
1471
1472 if (optind < argc)
1473 arg_files = argv + optind;
1474
1475 type_a = arg_getter || !strv_isempty(arg_files);
1476 type_b = arg_url
1477 || arg_listen_raw
1478 || arg_listen_http || arg_listen_https
1479 || sd_listen_fds(false) > 0;
1480 if (type_a && type_b) {
1481 log_error("Cannot use file input or --getter with "
1482 "--arg-listen-... or socket activation.");
1483 return -EINVAL;
1484 }
1485 if (type_a) {
1486 if (!arg_output) {
1487 log_error("Option --output must be specified with file input or --getter.");
1488 return -EINVAL;
1489 }
1490
1491 arg_split_mode = JOURNAL_WRITE_SPLIT_NONE;
1492 }
1493
1494 if (arg_split_mode == JOURNAL_WRITE_SPLIT_NONE
1495 && arg_output && is_dir(arg_output, true) > 0) {
1496 log_error("For SplitMode=none, output must be a file.");
1497 return -EINVAL;
1498 }
1499
1500 if (arg_split_mode == JOURNAL_WRITE_SPLIT_HOST
1501 && arg_output && is_dir(arg_output, true) <= 0) {
1502 log_error("For SplitMode=host, output must be a directory.");
1503 return -EINVAL;
1504 }
1505
1506 log_debug("Full config: SplitMode=%s Key=%s Cert=%s Trust=%s",
1507 journal_write_split_mode_to_string(arg_split_mode),
1508 strna(arg_key),
1509 strna(arg_cert),
1510 strna(arg_trust));
1511
1512 return 1 /* work to do */;
1513 }
1514
1515 static int load_certificates(char **key, char **cert, char **trust) {
1516 int r;
1517
1518 r = read_full_file(arg_key ?: PRIV_KEY_FILE, key, NULL);
1519 if (r < 0)
1520 return log_error_errno(r, "Failed to read key from file '%s': %m",
1521 arg_key ?: PRIV_KEY_FILE);
1522
1523 r = read_full_file(arg_cert ?: CERT_FILE, cert, NULL);
1524 if (r < 0)
1525 return log_error_errno(r, "Failed to read certificate from file '%s': %m",
1526 arg_cert ?: CERT_FILE);
1527
1528 if (arg_trust_all)
1529 log_info("Certificate checking disabled.");
1530 else {
1531 r = read_full_file(arg_trust ?: TRUST_FILE, trust, NULL);
1532 if (r < 0)
1533 return log_error_errno(r, "Failed to read CA certificate file '%s': %m",
1534 arg_trust ?: TRUST_FILE);
1535 }
1536
1537 return 0;
1538 }
1539
1540 int main(int argc, char **argv) {
1541 RemoteServer s = {};
1542 int r;
1543 _cleanup_free_ char *key = NULL, *cert = NULL, *trust = NULL;
1544
1545 log_show_color(true);
1546 log_parse_environment();
1547
1548 r = parse_config();
1549 if (r < 0)
1550 return EXIT_FAILURE;
1551
1552 r = parse_argv(argc, argv);
1553 if (r <= 0)
1554 return r == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
1555
1556
1557 if (arg_listen_http || arg_listen_https) {
1558 r = setup_gnutls_logger(arg_gnutls_log);
1559 if (r < 0)
1560 return EXIT_FAILURE;
1561 }
1562
1563 if (arg_listen_https || https_socket >= 0)
1564 if (load_certificates(&key, &cert, &trust) < 0)
1565 return EXIT_FAILURE;
1566
1567 if (remoteserver_init(&s, key, cert, trust) < 0)
1568 return EXIT_FAILURE;
1569
1570 r = sd_event_set_watchdog(s.events, true);
1571 if (r < 0)
1572 log_error_errno(r, "Failed to enable watchdog: %m");
1573 else
1574 log_debug("Watchdog is %sd.", enable_disable(r > 0));
1575
1576 log_debug("%s running as pid "PID_FMT,
1577 program_invocation_short_name, getpid_cached());
1578 sd_notify(false,
1579 "READY=1\n"
1580 "STATUS=Processing requests...");
1581
1582 while (s.active) {
1583 r = sd_event_get_state(s.events);
1584 if (r < 0)
1585 break;
1586 if (r == SD_EVENT_FINISHED)
1587 break;
1588
1589 r = sd_event_run(s.events, -1);
1590 if (r < 0) {
1591 log_error_errno(r, "Failed to run event loop: %m");
1592 break;
1593 }
1594 }
1595
1596 sd_notifyf(false,
1597 "STOPPING=1\n"
1598 "STATUS=Shutting down after writing %" PRIu64 " entries...", s.event_count);
1599 log_info("Finishing after writing %" PRIu64 " entries", s.event_count);
1600
1601 server_destroy(&s);
1602
1603 free(arg_key);
1604 free(arg_cert);
1605 free(arg_trust);
1606
1607 return r >= 0 ? EXIT_SUCCESS : EXIT_FAILURE;
1608 }
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