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