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build-sys: use #if Y instead of #ifdef Y everywhere
[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_INVALID;
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_ITC;
655
656 const union MHD_DaemonInfo *info;
657 int r, epoll_fd;
658 MHDDaemonWrapper *d;
659
660 assert(fd >= 0);
661
662 r = fd_nonblock(fd, true);
663 if (r < 0)
664 return log_error_errno(r, "Failed to make fd:%d nonblocking: %m", fd);
665
666 /* MHD_OPTION_STRICT_FOR_CLIENT is introduced in microhttpd 0.9.54,
667 * and MHD_USE_PEDANTIC_CHECKS will be deprecated in future.
668 * If MHD_USE_PEDANTIC_CHECKS is '#define'd, then it is deprecated
669 * and we should use MHD_OPTION_STRICT_FOR_CLIENT. On the other hand,
670 * if MHD_USE_PEDANTIC_CHECKS is not '#define'd, then it is not
671 * deprecated yet and there exists an enum element with the same name.
672 * So we can safely use it. */
673 #ifdef MHD_USE_PEDANTIC_CHECKS
674 opts[opts_pos++] = (struct MHD_OptionItem)
675 {MHD_OPTION_STRICT_FOR_CLIENT, 1};
676 #else
677 flags |= MHD_USE_PEDANTIC_CHECKS;
678 #endif
679
680 if (key) {
681 assert(cert);
682
683 opts[opts_pos++] = (struct MHD_OptionItem)
684 {MHD_OPTION_HTTPS_MEM_KEY, 0, (char*) key};
685 opts[opts_pos++] = (struct MHD_OptionItem)
686 {MHD_OPTION_HTTPS_MEM_CERT, 0, (char*) cert};
687
688 flags |= MHD_USE_TLS;
689
690 if (trust)
691 opts[opts_pos++] = (struct MHD_OptionItem)
692 {MHD_OPTION_HTTPS_MEM_TRUST, 0, (char*) trust};
693 }
694
695 d = new(MHDDaemonWrapper, 1);
696 if (!d)
697 return log_oom();
698
699 d->fd = (uint64_t) fd;
700
701 d->daemon = MHD_start_daemon(flags, 0,
702 NULL, NULL,
703 request_handler, NULL,
704 MHD_OPTION_ARRAY, opts,
705 MHD_OPTION_END);
706 if (!d->daemon) {
707 log_error("Failed to start µhttp daemon");
708 r = -EINVAL;
709 goto error;
710 }
711
712 log_debug("Started MHD %s daemon on fd:%d (wrapper @ %p)",
713 key ? "HTTPS" : "HTTP", fd, d);
714
715
716 info = MHD_get_daemon_info(d->daemon, MHD_DAEMON_INFO_EPOLL_FD_LINUX_ONLY);
717 if (!info) {
718 log_error("µhttp returned NULL daemon info");
719 r = -EOPNOTSUPP;
720 goto error;
721 }
722
723 epoll_fd = info->listen_fd;
724 if (epoll_fd < 0) {
725 log_error("µhttp epoll fd is invalid");
726 r = -EUCLEAN;
727 goto error;
728 }
729
730 r = sd_event_add_io(s->events, &d->event,
731 epoll_fd, EPOLLIN,
732 dispatch_http_event, d);
733 if (r < 0) {
734 log_error_errno(r, "Failed to add event callback: %m");
735 goto error;
736 }
737
738 r = sd_event_source_set_description(d->event, "epoll-fd");
739 if (r < 0) {
740 log_error_errno(r, "Failed to set source name: %m");
741 goto error;
742 }
743
744 r = hashmap_ensure_allocated(&s->daemons, &uint64_hash_ops);
745 if (r < 0) {
746 log_oom();
747 goto error;
748 }
749
750 r = hashmap_put(s->daemons, &d->fd, d);
751 if (r < 0) {
752 log_error_errno(r, "Failed to add daemon to hashmap: %m");
753 goto error;
754 }
755
756 s->active++;
757 return 0;
758
759 error:
760 MHD_stop_daemon(d->daemon);
761 free(d->daemon);
762 free(d);
763 return r;
764 }
765
766 static int setup_microhttpd_socket(RemoteServer *s,
767 const char *address,
768 const char *key,
769 const char *cert,
770 const char *trust) {
771 int fd;
772
773 fd = make_socket_fd(LOG_DEBUG, address, SOCK_STREAM, SOCK_CLOEXEC);
774 if (fd < 0)
775 return fd;
776
777 return setup_microhttpd_server(s, fd, key, cert, trust);
778 }
779
780 static int dispatch_http_event(sd_event_source *event,
781 int fd,
782 uint32_t revents,
783 void *userdata) {
784 MHDDaemonWrapper *d = userdata;
785 int r;
786
787 assert(d);
788
789 r = MHD_run(d->daemon);
790 if (r == MHD_NO) {
791 log_error("MHD_run failed!");
792 // XXX: unregister daemon
793 return -EINVAL;
794 }
795
796 return 1; /* work to do */
797 }
798
799 /**********************************************************************
800 **********************************************************************
801 **********************************************************************/
802
803 static int setup_signals(RemoteServer *s) {
804 int r;
805
806 assert(s);
807
808 assert_se(sigprocmask_many(SIG_SETMASK, NULL, SIGINT, SIGTERM, -1) >= 0);
809
810 r = sd_event_add_signal(s->events, &s->sigterm_event, SIGTERM, NULL, s);
811 if (r < 0)
812 return r;
813
814 r = sd_event_add_signal(s->events, &s->sigint_event, SIGINT, NULL, s);
815 if (r < 0)
816 return r;
817
818 return 0;
819 }
820
821 static int negative_fd(const char *spec) {
822 /* Return a non-positive number as its inverse, -EINVAL otherwise. */
823
824 int fd, r;
825
826 r = safe_atoi(spec, &fd);
827 if (r < 0)
828 return r;
829
830 if (fd > 0)
831 return -EINVAL;
832 else
833 return -fd;
834 }
835
836 static int remoteserver_init(RemoteServer *s,
837 const char* key,
838 const char* cert,
839 const char* trust) {
840 int r, n, fd;
841 char **file;
842
843 assert(s);
844
845 if ((arg_listen_raw || arg_listen_http) && trust) {
846 log_error("Option --trust makes all non-HTTPS connections untrusted.");
847 return -EINVAL;
848 }
849
850 r = sd_event_default(&s->events);
851 if (r < 0)
852 return log_error_errno(r, "Failed to allocate event loop: %m");
853
854 setup_signals(s);
855
856 assert(server == NULL);
857 server = s;
858
859 r = init_writer_hashmap(s);
860 if (r < 0)
861 return r;
862
863 n = sd_listen_fds(true);
864 if (n < 0)
865 return log_error_errno(n, "Failed to read listening file descriptors from environment: %m");
866 else
867 log_debug("Received %d descriptors", n);
868
869 if (MAX(http_socket, https_socket) >= SD_LISTEN_FDS_START + n) {
870 log_error("Received fewer sockets than expected");
871 return -EBADFD;
872 }
873
874 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) {
875 if (sd_is_socket(fd, AF_UNSPEC, 0, true)) {
876 log_debug("Received a listening socket (fd:%d)", fd);
877
878 if (fd == http_socket)
879 r = setup_microhttpd_server(s, fd, NULL, NULL, NULL);
880 else if (fd == https_socket)
881 r = setup_microhttpd_server(s, fd, key, cert, trust);
882 else
883 r = add_raw_socket(s, fd);
884 } else if (sd_is_socket(fd, AF_UNSPEC, 0, false)) {
885 char *hostname;
886
887 r = getpeername_pretty(fd, false, &hostname);
888 if (r < 0)
889 return log_error_errno(r, "Failed to retrieve remote name: %m");
890
891 log_debug("Received a connection socket (fd:%d) from %s", fd, hostname);
892
893 r = add_source(s, fd, hostname, true);
894 } else {
895 log_error("Unknown socket passed on fd:%d", fd);
896
897 return -EINVAL;
898 }
899
900 if (r < 0)
901 return log_error_errno(r, "Failed to register socket (fd:%d): %m",
902 fd);
903 }
904
905 if (arg_getter) {
906 log_info("Spawning getter %s...", arg_getter);
907 fd = spawn_getter(arg_getter);
908 if (fd < 0)
909 return fd;
910
911 r = add_source(s, fd, (char*) arg_output, false);
912 if (r < 0)
913 return r;
914 }
915
916 if (arg_url) {
917 const char *url;
918 char *hostname, *p;
919
920 if (!strstr(arg_url, "/entries")) {
921 if (endswith(arg_url, "/"))
922 url = strjoina(arg_url, "entries");
923 else
924 url = strjoina(arg_url, "/entries");
925 }
926 else
927 url = strdupa(arg_url);
928
929 log_info("Spawning curl %s...", url);
930 fd = spawn_curl(url);
931 if (fd < 0)
932 return fd;
933
934 hostname =
935 startswith(arg_url, "https://") ?:
936 startswith(arg_url, "http://") ?:
937 arg_url;
938
939 hostname = strdupa(hostname);
940 if ((p = strchr(hostname, '/')))
941 *p = '\0';
942 if ((p = strchr(hostname, ':')))
943 *p = '\0';
944
945 r = add_source(s, fd, hostname, false);
946 if (r < 0)
947 return r;
948 }
949
950 if (arg_listen_raw) {
951 log_debug("Listening on a socket...");
952 r = setup_raw_socket(s, arg_listen_raw);
953 if (r < 0)
954 return r;
955 }
956
957 if (arg_listen_http) {
958 r = setup_microhttpd_socket(s, arg_listen_http, NULL, NULL, NULL);
959 if (r < 0)
960 return r;
961 }
962
963 if (arg_listen_https) {
964 r = setup_microhttpd_socket(s, arg_listen_https, key, cert, trust);
965 if (r < 0)
966 return r;
967 }
968
969 STRV_FOREACH(file, arg_files) {
970 const char *output_name;
971
972 if (streq(*file, "-")) {
973 log_debug("Using standard input as source.");
974
975 fd = STDIN_FILENO;
976 output_name = "stdin";
977 } else {
978 log_debug("Reading file %s...", *file);
979
980 fd = open(*file, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NONBLOCK);
981 if (fd < 0)
982 return log_error_errno(errno, "Failed to open %s: %m", *file);
983 output_name = *file;
984 }
985
986 r = add_source(s, fd, (char*) output_name, false);
987 if (r < 0)
988 return r;
989 }
990
991 if (s->active == 0) {
992 log_error("Zero sources specified");
993 return -EINVAL;
994 }
995
996 if (arg_split_mode == JOURNAL_WRITE_SPLIT_NONE) {
997 /* In this case we know what the writer will be
998 called, so we can create it and verify that we can
999 create output as expected. */
1000 r = get_writer(s, NULL, &s->_single_writer);
1001 if (r < 0)
1002 return r;
1003 }
1004
1005 return 0;
1006 }
1007
1008 static void server_destroy(RemoteServer *s) {
1009 size_t i;
1010 MHDDaemonWrapper *d;
1011
1012 while ((d = hashmap_steal_first(s->daemons))) {
1013 MHD_stop_daemon(d->daemon);
1014 sd_event_source_unref(d->event);
1015 free(d);
1016 }
1017
1018 hashmap_free(s->daemons);
1019
1020 assert(s->sources_size == 0 || s->sources);
1021 for (i = 0; i < s->sources_size; i++)
1022 remove_source(s, i);
1023 free(s->sources);
1024
1025 writer_unref(s->_single_writer);
1026 hashmap_free(s->writers);
1027
1028 sd_event_source_unref(s->sigterm_event);
1029 sd_event_source_unref(s->sigint_event);
1030 sd_event_source_unref(s->listen_event);
1031 sd_event_unref(s->events);
1032
1033 /* fds that we're listening on remain open... */
1034 }
1035
1036 /**********************************************************************
1037 **********************************************************************
1038 **********************************************************************/
1039
1040 static int handle_raw_source(sd_event_source *event,
1041 int fd,
1042 uint32_t revents,
1043 RemoteServer *s) {
1044
1045 RemoteSource *source;
1046 int r;
1047
1048 /* Returns 1 if there might be more data pending,
1049 * 0 if data is currently exhausted, negative on error.
1050 */
1051
1052 assert(fd >= 0 && fd < (ssize_t) s->sources_size);
1053 source = s->sources[fd];
1054 assert(source->importer.fd == fd);
1055
1056 r = process_source(source, arg_compress, arg_seal);
1057 if (journal_importer_eof(&source->importer)) {
1058 size_t remaining;
1059
1060 log_debug("EOF reached with source %s (fd=%d)",
1061 source->importer.name, source->importer.fd);
1062
1063 remaining = journal_importer_bytes_remaining(&source->importer);
1064 if (remaining > 0)
1065 log_notice("Premature EOF. %zu bytes lost.", remaining);
1066 remove_source(s, source->importer.fd);
1067 log_debug("%zu active sources remaining", s->active);
1068 return 0;
1069 } else if (r == -E2BIG) {
1070 log_notice_errno(E2BIG, "Entry too big, skipped");
1071 return 1;
1072 } else if (r == -EAGAIN) {
1073 return 0;
1074 } else if (r < 0) {
1075 log_debug_errno(r, "Closing connection: %m");
1076 remove_source(server, fd);
1077 return 0;
1078 } else
1079 return 1;
1080 }
1081
1082 static int dispatch_raw_source_until_block(sd_event_source *event,
1083 void *userdata) {
1084 RemoteSource *source = userdata;
1085 int r;
1086
1087 /* Make sure event stays around even if source is destroyed */
1088 sd_event_source_ref(event);
1089
1090 r = handle_raw_source(event, source->importer.fd, EPOLLIN, server);
1091 if (r != 1)
1092 /* No more data for now */
1093 sd_event_source_set_enabled(event, SD_EVENT_OFF);
1094
1095 sd_event_source_unref(event);
1096
1097 return r;
1098 }
1099
1100 static int dispatch_raw_source_event(sd_event_source *event,
1101 int fd,
1102 uint32_t revents,
1103 void *userdata) {
1104 RemoteSource *source = userdata;
1105 int r;
1106
1107 assert(source->event);
1108 assert(source->buffer_event);
1109
1110 r = handle_raw_source(event, fd, EPOLLIN, server);
1111 if (r == 1)
1112 /* Might have more data. We need to rerun the handler
1113 * until we are sure the buffer is exhausted. */
1114 sd_event_source_set_enabled(source->buffer_event, SD_EVENT_ON);
1115
1116 return r;
1117 }
1118
1119 static int dispatch_blocking_source_event(sd_event_source *event,
1120 void *userdata) {
1121 RemoteSource *source = userdata;
1122
1123 return handle_raw_source(event, source->importer.fd, EPOLLIN, server);
1124 }
1125
1126 static int accept_connection(const char* type, int fd,
1127 SocketAddress *addr, char **hostname) {
1128 int fd2, r;
1129
1130 log_debug("Accepting new %s connection on fd:%d", type, fd);
1131 fd2 = accept4(fd, &addr->sockaddr.sa, &addr->size, SOCK_NONBLOCK|SOCK_CLOEXEC);
1132 if (fd2 < 0)
1133 return log_error_errno(errno, "accept() on fd:%d failed: %m", fd);
1134
1135 switch(socket_address_family(addr)) {
1136 case AF_INET:
1137 case AF_INET6: {
1138 _cleanup_free_ char *a = NULL;
1139 char *b;
1140
1141 r = socket_address_print(addr, &a);
1142 if (r < 0) {
1143 log_error_errno(r, "socket_address_print(): %m");
1144 close(fd2);
1145 return r;
1146 }
1147
1148 r = socknameinfo_pretty(&addr->sockaddr, addr->size, &b);
1149 if (r < 0) {
1150 log_error_errno(r, "Resolving hostname failed: %m");
1151 close(fd2);
1152 return r;
1153 }
1154
1155 log_debug("Accepted %s %s connection from %s",
1156 type,
1157 socket_address_family(addr) == AF_INET ? "IP" : "IPv6",
1158 a);
1159
1160 *hostname = b;
1161
1162 return fd2;
1163 };
1164 default:
1165 log_error("Rejected %s connection with unsupported family %d",
1166 type, socket_address_family(addr));
1167 close(fd2);
1168
1169 return -EINVAL;
1170 }
1171 }
1172
1173 static int dispatch_raw_connection_event(sd_event_source *event,
1174 int fd,
1175 uint32_t revents,
1176 void *userdata) {
1177 RemoteServer *s = userdata;
1178 int fd2;
1179 SocketAddress addr = {
1180 .size = sizeof(union sockaddr_union),
1181 .type = SOCK_STREAM,
1182 };
1183 char *hostname = NULL;
1184
1185 fd2 = accept_connection("raw", fd, &addr, &hostname);
1186 if (fd2 < 0)
1187 return fd2;
1188
1189 return add_source(s, fd2, hostname, true);
1190 }
1191
1192 /**********************************************************************
1193 **********************************************************************
1194 **********************************************************************/
1195
1196 static const char* const journal_write_split_mode_table[_JOURNAL_WRITE_SPLIT_MAX] = {
1197 [JOURNAL_WRITE_SPLIT_NONE] = "none",
1198 [JOURNAL_WRITE_SPLIT_HOST] = "host",
1199 };
1200
1201 DEFINE_PRIVATE_STRING_TABLE_LOOKUP(journal_write_split_mode, JournalWriteSplitMode);
1202 static DEFINE_CONFIG_PARSE_ENUM(config_parse_write_split_mode,
1203 journal_write_split_mode,
1204 JournalWriteSplitMode,
1205 "Failed to parse split mode setting");
1206
1207 static int parse_config(void) {
1208 const ConfigTableItem items[] = {
1209 { "Remote", "Seal", config_parse_bool, 0, &arg_seal },
1210 { "Remote", "SplitMode", config_parse_write_split_mode, 0, &arg_split_mode },
1211 { "Remote", "ServerKeyFile", config_parse_path, 0, &arg_key },
1212 { "Remote", "ServerCertificateFile", config_parse_path, 0, &arg_cert },
1213 { "Remote", "TrustedCertificateFile", config_parse_path, 0, &arg_trust },
1214 {}};
1215
1216 return config_parse_many_nulstr(PKGSYSCONFDIR "/journal-remote.conf",
1217 CONF_PATHS_NULSTR("systemd/journal-remote.conf.d"),
1218 "Remote\0", config_item_table_lookup, items,
1219 false, NULL);
1220 }
1221
1222 static void help(void) {
1223 printf("%s [OPTIONS...] {FILE|-}...\n\n"
1224 "Write external journal events to journal file(s).\n\n"
1225 " -h --help Show this help\n"
1226 " --version Show package version\n"
1227 " --url=URL Read events from systemd-journal-gatewayd at URL\n"
1228 " --getter=COMMAND Read events from the output of COMMAND\n"
1229 " --listen-raw=ADDR Listen for connections at ADDR\n"
1230 " --listen-http=ADDR Listen for HTTP connections at ADDR\n"
1231 " --listen-https=ADDR Listen for HTTPS connections at ADDR\n"
1232 " -o --output=FILE|DIR Write output to FILE or DIR/external-*.journal\n"
1233 " --compress[=BOOL] XZ-compress the output journal (default: yes)\n"
1234 " --seal[=BOOL] Use event sealing (default: no)\n"
1235 " --key=FILENAME SSL key in PEM format (default:\n"
1236 " \"" PRIV_KEY_FILE "\")\n"
1237 " --cert=FILENAME SSL certificate in PEM format (default:\n"
1238 " \"" CERT_FILE "\")\n"
1239 " --trust=FILENAME|all SSL CA certificate or disable checking (default:\n"
1240 " \"" TRUST_FILE "\")\n"
1241 " --gnutls-log=CATEGORY...\n"
1242 " Specify a list of gnutls logging categories\n"
1243 " --split-mode=none|host How many output files to create\n"
1244 "\n"
1245 "Note: file descriptors from sd_listen_fds() will be consumed, too.\n"
1246 , program_invocation_short_name);
1247 }
1248
1249 static int parse_argv(int argc, char *argv[]) {
1250 enum {
1251 ARG_VERSION = 0x100,
1252 ARG_URL,
1253 ARG_LISTEN_RAW,
1254 ARG_LISTEN_HTTP,
1255 ARG_LISTEN_HTTPS,
1256 ARG_GETTER,
1257 ARG_SPLIT_MODE,
1258 ARG_COMPRESS,
1259 ARG_SEAL,
1260 ARG_KEY,
1261 ARG_CERT,
1262 ARG_TRUST,
1263 ARG_GNUTLS_LOG,
1264 };
1265
1266 static const struct option options[] = {
1267 { "help", no_argument, NULL, 'h' },
1268 { "version", no_argument, NULL, ARG_VERSION },
1269 { "url", required_argument, NULL, ARG_URL },
1270 { "getter", required_argument, NULL, ARG_GETTER },
1271 { "listen-raw", required_argument, NULL, ARG_LISTEN_RAW },
1272 { "listen-http", required_argument, NULL, ARG_LISTEN_HTTP },
1273 { "listen-https", required_argument, NULL, ARG_LISTEN_HTTPS },
1274 { "output", required_argument, NULL, 'o' },
1275 { "split-mode", required_argument, NULL, ARG_SPLIT_MODE },
1276 { "compress", optional_argument, NULL, ARG_COMPRESS },
1277 { "seal", optional_argument, NULL, ARG_SEAL },
1278 { "key", required_argument, NULL, ARG_KEY },
1279 { "cert", required_argument, NULL, ARG_CERT },
1280 { "trust", required_argument, NULL, ARG_TRUST },
1281 { "gnutls-log", required_argument, NULL, ARG_GNUTLS_LOG },
1282 {}
1283 };
1284
1285 int c, r;
1286 bool type_a, type_b;
1287
1288 assert(argc >= 0);
1289 assert(argv);
1290
1291 while ((c = getopt_long(argc, argv, "ho:", options, NULL)) >= 0)
1292 switch(c) {
1293 case 'h':
1294 help();
1295 return 0 /* done */;
1296
1297 case ARG_VERSION:
1298 return version();
1299
1300 case ARG_URL:
1301 if (arg_url) {
1302 log_error("cannot currently set more than one --url");
1303 return -EINVAL;
1304 }
1305
1306 arg_url = optarg;
1307 break;
1308
1309 case ARG_GETTER:
1310 if (arg_getter) {
1311 log_error("cannot currently use --getter more than once");
1312 return -EINVAL;
1313 }
1314
1315 arg_getter = optarg;
1316 break;
1317
1318 case ARG_LISTEN_RAW:
1319 if (arg_listen_raw) {
1320 log_error("cannot currently use --listen-raw more than once");
1321 return -EINVAL;
1322 }
1323
1324 arg_listen_raw = optarg;
1325 break;
1326
1327 case ARG_LISTEN_HTTP:
1328 if (arg_listen_http || http_socket >= 0) {
1329 log_error("cannot currently use --listen-http more than once");
1330 return -EINVAL;
1331 }
1332
1333 r = negative_fd(optarg);
1334 if (r >= 0)
1335 http_socket = r;
1336 else
1337 arg_listen_http = optarg;
1338 break;
1339
1340 case ARG_LISTEN_HTTPS:
1341 if (arg_listen_https || https_socket >= 0) {
1342 log_error("cannot currently use --listen-https more than once");
1343 return -EINVAL;
1344 }
1345
1346 r = negative_fd(optarg);
1347 if (r >= 0)
1348 https_socket = r;
1349 else
1350 arg_listen_https = optarg;
1351
1352 break;
1353
1354 case ARG_KEY:
1355 if (arg_key) {
1356 log_error("Key file specified twice");
1357 return -EINVAL;
1358 }
1359
1360 arg_key = strdup(optarg);
1361 if (!arg_key)
1362 return log_oom();
1363
1364 break;
1365
1366 case ARG_CERT:
1367 if (arg_cert) {
1368 log_error("Certificate file specified twice");
1369 return -EINVAL;
1370 }
1371
1372 arg_cert = strdup(optarg);
1373 if (!arg_cert)
1374 return log_oom();
1375
1376 break;
1377
1378 case ARG_TRUST:
1379 if (arg_trust || arg_trust_all) {
1380 log_error("Confusing trusted CA configuration");
1381 return -EINVAL;
1382 }
1383
1384 if (streq(optarg, "all"))
1385 arg_trust_all = true;
1386 else {
1387 #if HAVE_GNUTLS
1388 arg_trust = strdup(optarg);
1389 if (!arg_trust)
1390 return log_oom();
1391 #else
1392 log_error("Option --trust is not available.");
1393 return -EINVAL;
1394 #endif
1395 }
1396
1397 break;
1398
1399 case 'o':
1400 if (arg_output) {
1401 log_error("cannot use --output/-o more than once");
1402 return -EINVAL;
1403 }
1404
1405 arg_output = optarg;
1406 break;
1407
1408 case ARG_SPLIT_MODE:
1409 arg_split_mode = journal_write_split_mode_from_string(optarg);
1410 if (arg_split_mode == _JOURNAL_WRITE_SPLIT_INVALID) {
1411 log_error("Invalid split mode: %s", optarg);
1412 return -EINVAL;
1413 }
1414 break;
1415
1416 case ARG_COMPRESS:
1417 if (optarg) {
1418 r = parse_boolean(optarg);
1419 if (r < 0) {
1420 log_error("Failed to parse --compress= parameter.");
1421 return -EINVAL;
1422 }
1423
1424 arg_compress = !!r;
1425 } else
1426 arg_compress = true;
1427
1428 break;
1429
1430 case ARG_SEAL:
1431 if (optarg) {
1432 r = parse_boolean(optarg);
1433 if (r < 0) {
1434 log_error("Failed to parse --seal= parameter.");
1435 return -EINVAL;
1436 }
1437
1438 arg_seal = !!r;
1439 } else
1440 arg_seal = true;
1441
1442 break;
1443
1444 case ARG_GNUTLS_LOG: {
1445 #if HAVE_GNUTLS
1446 const char* p = optarg;
1447 for (;;) {
1448 _cleanup_free_ char *word = NULL;
1449
1450 r = extract_first_word(&p, &word, ",", 0);
1451 if (r < 0)
1452 return log_error_errno(r, "Failed to parse --gnutls-log= argument: %m");
1453
1454 if (r == 0)
1455 break;
1456
1457 if (strv_push(&arg_gnutls_log, word) < 0)
1458 return log_oom();
1459
1460 word = NULL;
1461 }
1462 break;
1463 #else
1464 log_error("Option --gnutls-log is not available.");
1465 return -EINVAL;
1466 #endif
1467 }
1468
1469 case '?':
1470 return -EINVAL;
1471
1472 default:
1473 assert_not_reached("Unknown option code.");
1474 }
1475
1476 if (optind < argc)
1477 arg_files = argv + optind;
1478
1479 type_a = arg_getter || !strv_isempty(arg_files);
1480 type_b = arg_url
1481 || arg_listen_raw
1482 || arg_listen_http || arg_listen_https
1483 || sd_listen_fds(false) > 0;
1484 if (type_a && type_b) {
1485 log_error("Cannot use file input or --getter with "
1486 "--arg-listen-... or socket activation.");
1487 return -EINVAL;
1488 }
1489 if (type_a) {
1490 if (!arg_output) {
1491 log_error("Option --output must be specified with file input or --getter.");
1492 return -EINVAL;
1493 }
1494
1495 if (!IN_SET(arg_split_mode, JOURNAL_WRITE_SPLIT_NONE, _JOURNAL_WRITE_SPLIT_INVALID)) {
1496 log_error("For active sources, only --split-mode=none is allowed.");
1497 return -EINVAL;
1498 }
1499
1500 arg_split_mode = JOURNAL_WRITE_SPLIT_NONE;
1501 }
1502
1503 if (arg_split_mode == _JOURNAL_WRITE_SPLIT_INVALID)
1504 arg_split_mode = JOURNAL_WRITE_SPLIT_HOST;
1505
1506 if (arg_split_mode == JOURNAL_WRITE_SPLIT_NONE && arg_output) {
1507 if (is_dir(arg_output, true) > 0) {
1508 log_error("For SplitMode=none, output must be a file.");
1509 return -EINVAL;
1510 }
1511 if (!endswith(arg_output, ".journal")) {
1512 log_error("For SplitMode=none, output file name must end with .journal.");
1513 return -EINVAL;
1514 }
1515 }
1516
1517 if (arg_split_mode == JOURNAL_WRITE_SPLIT_HOST
1518 && arg_output && is_dir(arg_output, true) <= 0) {
1519 log_error("For SplitMode=host, output must be a directory.");
1520 return -EINVAL;
1521 }
1522
1523 log_debug("Full config: SplitMode=%s Key=%s Cert=%s Trust=%s",
1524 journal_write_split_mode_to_string(arg_split_mode),
1525 strna(arg_key),
1526 strna(arg_cert),
1527 strna(arg_trust));
1528
1529 return 1 /* work to do */;
1530 }
1531
1532 static int load_certificates(char **key, char **cert, char **trust) {
1533 int r;
1534
1535 r = read_full_file(arg_key ?: PRIV_KEY_FILE, key, NULL);
1536 if (r < 0)
1537 return log_error_errno(r, "Failed to read key from file '%s': %m",
1538 arg_key ?: PRIV_KEY_FILE);
1539
1540 r = read_full_file(arg_cert ?: CERT_FILE, cert, NULL);
1541 if (r < 0)
1542 return log_error_errno(r, "Failed to read certificate from file '%s': %m",
1543 arg_cert ?: CERT_FILE);
1544
1545 if (arg_trust_all)
1546 log_info("Certificate checking disabled.");
1547 else {
1548 r = read_full_file(arg_trust ?: TRUST_FILE, trust, NULL);
1549 if (r < 0)
1550 return log_error_errno(r, "Failed to read CA certificate file '%s': %m",
1551 arg_trust ?: TRUST_FILE);
1552 }
1553
1554 return 0;
1555 }
1556
1557 int main(int argc, char **argv) {
1558 RemoteServer s = {};
1559 int r;
1560 _cleanup_free_ char *key = NULL, *cert = NULL, *trust = NULL;
1561
1562 log_show_color(true);
1563 log_parse_environment();
1564
1565 r = parse_config();
1566 if (r < 0)
1567 return EXIT_FAILURE;
1568
1569 r = parse_argv(argc, argv);
1570 if (r <= 0)
1571 return r == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
1572
1573
1574 if (arg_listen_http || arg_listen_https) {
1575 r = setup_gnutls_logger(arg_gnutls_log);
1576 if (r < 0)
1577 return EXIT_FAILURE;
1578 }
1579
1580 if (arg_listen_https || https_socket >= 0)
1581 if (load_certificates(&key, &cert, &trust) < 0)
1582 return EXIT_FAILURE;
1583
1584 if (remoteserver_init(&s, key, cert, trust) < 0)
1585 return EXIT_FAILURE;
1586
1587 r = sd_event_set_watchdog(s.events, true);
1588 if (r < 0)
1589 log_error_errno(r, "Failed to enable watchdog: %m");
1590 else
1591 log_debug("Watchdog is %sd.", enable_disable(r > 0));
1592
1593 log_debug("%s running as pid "PID_FMT,
1594 program_invocation_short_name, getpid_cached());
1595 sd_notify(false,
1596 "READY=1\n"
1597 "STATUS=Processing requests...");
1598
1599 while (s.active) {
1600 r = sd_event_get_state(s.events);
1601 if (r < 0)
1602 break;
1603 if (r == SD_EVENT_FINISHED)
1604 break;
1605
1606 r = sd_event_run(s.events, -1);
1607 if (r < 0) {
1608 log_error_errno(r, "Failed to run event loop: %m");
1609 break;
1610 }
1611 }
1612
1613 sd_notifyf(false,
1614 "STOPPING=1\n"
1615 "STATUS=Shutting down after writing %" PRIu64 " entries...", s.event_count);
1616 log_info("Finishing after writing %" PRIu64 " entries", s.event_count);
1617
1618 server_destroy(&s);
1619
1620 free(arg_key);
1621 free(arg_cert);
1622 free(arg_trust);
1623
1624 return r >= 0 ? EXIT_SUCCESS : EXIT_FAILURE;
1625 }
Unnamed repository; edit this file 'description' to name the repository.