1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2012 Zbigniew Jędrzejewski-Szmek
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
27 #include <sys/prctl.h>
28 #include <sys/socket.h>
30 #include <sys/types.h>
34 #include "sd-daemon.h"
35 #include "journal-file.h"
36 #include "journald-native.h"
37 #include "socket-util.h"
43 #include "conf-parser.h"
44 #include "siphash24.h"
47 #include <gnutls/gnutls.h>
50 #include "journal-remote.h"
51 #include "journal-remote-write.h"
53 #define REMOTE_JOURNAL_PATH "/var/log/journal/remote"
55 #define PRIV_KEY_FILE CERTIFICATE_ROOT "/private/journal-remote.pem"
56 #define CERT_FILE CERTIFICATE_ROOT "/certs/journal-remote.pem"
57 #define TRUST_FILE CERTIFICATE_ROOT "/ca/trusted.pem"
59 static char* arg_url = NULL;
60 static char* arg_getter = NULL;
61 static char* arg_listen_raw = NULL;
62 static char* arg_listen_http = NULL;
63 static char* arg_listen_https = NULL;
64 static char** arg_files = NULL;
65 static int arg_compress = true;
66 static int arg_seal = false;
67 static int http_socket = -1, https_socket = -1;
68 static char** arg_gnutls_log = NULL;
70 static JournalWriteSplitMode arg_split_mode = JOURNAL_WRITE_SPLIT_HOST;
71 static char* arg_output = NULL;
73 static char *arg_key = NULL;
74 static char *arg_cert = NULL;
75 static char *arg_trust = NULL;
76 static bool arg_trust_all = false;
78 /**********************************************************************
79 **********************************************************************
80 **********************************************************************/
82 static int spawn_child(const char* child, char** argv) {
84 pid_t parent_pid, child_pid;
88 log_error("Failed to create pager pipe: %m");
92 parent_pid = getpid();
97 log_error("Failed to fork: %m");
103 if (child_pid == 0) {
104 r = dup2(fd[1], STDOUT_FILENO);
106 log_error("Failed to dup pipe to stdout: %m");
112 /* Make sure the child goes away when the parent dies */
113 if (prctl(PR_SET_PDEATHSIG, SIGTERM) < 0)
116 /* Check whether our parent died before we were able
117 * to set the death signal */
118 if (getppid() != parent_pid)
122 log_error("Failed to exec child %s: %m", child);
128 log_warning("Failed to close write end of pipe: %m");
133 static int spawn_curl(const char* url) {
134 char **argv = STRV_MAKE("curl",
135 "-HAccept: application/vnd.fdo.journal",
141 r = spawn_child("curl", argv);
143 log_error("Failed to spawn curl: %m");
147 static int spawn_getter(const char *getter, const char *url) {
149 _cleanup_strv_free_ char **words = NULL;
152 r = strv_split_quoted(&words, getter, false);
154 log_error("Failed to split getter option: %s", strerror(-r));
158 r = strv_extend(&words, url);
160 log_error("Failed to create command line: %s", strerror(-r));
164 r = spawn_child(words[0], words);
166 log_error("Failed to spawn getter %s: %m", getter);
171 #define filename_escape(s) xescape((s), "/ ")
173 static int open_output(Writer *w, const char* host) {
174 _cleanup_free_ char *_output = NULL;
178 switch (arg_split_mode) {
179 case JOURNAL_WRITE_SPLIT_NONE:
180 output = arg_output ?: REMOTE_JOURNAL_PATH "/remote.journal";
183 case JOURNAL_WRITE_SPLIT_HOST: {
184 _cleanup_free_ char *name;
188 name = filename_escape(host);
192 r = asprintf(&_output, "%s/remote-%s.journal",
193 arg_output ?: REMOTE_JOURNAL_PATH,
203 assert_not_reached("what?");
206 r = journal_file_open_reliably(output,
207 O_RDWR|O_CREAT, 0640,
208 arg_compress, arg_seal,
213 log_error("Failed to open output journal %s: %s",
214 output, strerror(-r));
216 log_info("Opened output file %s", w->journal->path);
220 /**********************************************************************
221 **********************************************************************
222 **********************************************************************/
224 static int init_writer_hashmap(RemoteServer *s) {
225 static const struct hash_ops *hash_ops[] = {
226 [JOURNAL_WRITE_SPLIT_NONE] = NULL,
227 [JOURNAL_WRITE_SPLIT_HOST] = &string_hash_ops,
230 assert(arg_split_mode >= 0 && arg_split_mode < (int) ELEMENTSOF(hash_ops));
232 s->writers = hashmap_new(hash_ops[arg_split_mode]);
239 static int get_writer(RemoteServer *s, const char *host,
242 _cleanup_writer_unref_ Writer *w = NULL;
245 switch(arg_split_mode) {
246 case JOURNAL_WRITE_SPLIT_NONE:
247 key = "one and only";
250 case JOURNAL_WRITE_SPLIT_HOST:
256 assert_not_reached("what split mode?");
259 w = hashmap_get(s->writers, key);
267 if (arg_split_mode == JOURNAL_WRITE_SPLIT_HOST) {
268 w->hashmap_key = strdup(key);
273 r = open_output(w, host);
277 r = hashmap_put(s->writers, w->hashmap_key ?: key, w);
287 /**********************************************************************
288 **********************************************************************
289 **********************************************************************/
291 /* This should go away as soon as µhttpd allows state to be passed around. */
292 static RemoteServer *server;
294 static int dispatch_raw_source_event(sd_event_source *event,
298 static int dispatch_blocking_source_event(sd_event_source *event,
300 static int dispatch_raw_connection_event(sd_event_source *event,
304 static int dispatch_http_event(sd_event_source *event,
309 static int get_source_for_fd(RemoteServer *s,
310 int fd, char *name, RemoteSource **source) {
314 /* This takes ownership of name, but only on success. */
319 if (!GREEDY_REALLOC0(s->sources, s->sources_size, fd + 1))
322 r = get_writer(s, name, &writer);
324 log_warning("Failed to get writer for source %s: %s",
329 if (s->sources[fd] == NULL) {
330 s->sources[fd] = source_new(fd, false, name, writer);
331 if (!s->sources[fd]) {
332 writer_unref(writer);
339 *source = s->sources[fd];
343 static int remove_source(RemoteServer *s, int fd) {
344 RemoteSource *source;
347 assert(fd >= 0 && fd < (ssize_t) s->sources_size);
349 source = s->sources[fd];
351 /* this closes fd too */
353 s->sources[fd] = NULL;
360 static int add_source(RemoteServer *s, int fd, char* name, bool own_name) {
362 RemoteSource *source;
365 /* This takes ownership of name, even on failure, if own_name is true. */
377 r = get_source_for_fd(s, fd, name, &source);
379 log_error("Failed to create source for fd:%d (%s): %s",
380 fd, name, strerror(-r));
385 r = sd_event_add_io(s->events, &source->event,
386 fd, EPOLLIN|EPOLLRDHUP|EPOLLPRI,
387 dispatch_raw_source_event, s);
389 log_debug("Falling back to sd_event_add_defer for fd:%d (%s)", fd, name);
390 r = sd_event_add_defer(s->events, &source->event,
391 dispatch_blocking_source_event, source);
393 sd_event_source_set_enabled(source->event, SD_EVENT_ON);
396 log_error("Failed to register event source for fd:%d: %s",
401 r = sd_event_source_set_description(source->event, name);
403 log_error("Failed to set source name for fd:%d: %s", fd, strerror(-r));
407 return 1; /* work to do */
410 remove_source(s, fd);
414 static int add_raw_socket(RemoteServer *s, int fd) {
416 _cleanup_close_ int fd_ = fd;
417 char name[strlen("raw-socket-") + DECIMAL_STR_MAX(int)];
421 r = sd_event_add_io(s->events, &s->listen_event,
423 dispatch_raw_connection_event, s);
427 snprintf(name, sizeof(name), "raw-socket-%d", fd);
429 r = sd_event_source_set_description(s->listen_event, name);
438 static int setup_raw_socket(RemoteServer *s, const char *address) {
441 fd = make_socket_fd(LOG_INFO, address, SOCK_STREAM | SOCK_CLOEXEC);
445 return add_raw_socket(s, fd);
448 /**********************************************************************
449 **********************************************************************
450 **********************************************************************/
452 static int request_meta(void **connection_cls, int fd, char *hostname) {
453 RemoteSource *source;
457 assert(connection_cls);
461 r = get_writer(server, hostname, &writer);
463 log_warning("Failed to get writer for source %s: %s",
464 hostname, strerror(-r));
468 source = source_new(fd, true, hostname, writer);
470 writer_unref(writer);
474 log_debug("Added RemoteSource as connection metadata %p", source);
476 *connection_cls = source;
480 static void request_meta_free(void *cls,
481 struct MHD_Connection *connection,
482 void **connection_cls,
483 enum MHD_RequestTerminationCode toe) {
486 assert(connection_cls);
490 log_debug("Cleaning up connection metadata %p", s);
492 *connection_cls = NULL;
496 static int process_http_upload(
497 struct MHD_Connection *connection,
498 const char *upload_data,
499 size_t *upload_data_size,
500 RemoteSource *source) {
502 bool finished = false;
508 log_trace("%s: connection %p, %zu bytes",
509 __func__, connection, *upload_data_size);
511 if (*upload_data_size) {
512 log_trace("Received %zu bytes", *upload_data_size);
514 r = push_data(source, upload_data, *upload_data_size);
516 return mhd_respond_oom(connection);
518 *upload_data_size = 0;
523 r = process_source(source, arg_compress, arg_seal);
524 if (r == -EAGAIN || r == -EWOULDBLOCK)
527 log_warning("Failed to process data for connection %p", connection);
529 return mhd_respondf(connection,
530 MHD_HTTP_REQUEST_ENTITY_TOO_LARGE,
531 "Entry is too large, maximum is %u bytes.\n",
534 return mhd_respondf(connection,
535 MHD_HTTP_UNPROCESSABLE_ENTITY,
536 "Processing failed: %s.", strerror(-r));
543 /* The upload is finished */
545 remaining = source_non_empty(source);
547 log_warning("Premature EOFbyte. %zu bytes lost.", remaining);
548 return mhd_respondf(connection, MHD_HTTP_EXPECTATION_FAILED,
549 "Premature EOF. %zu bytes of trailing data not processed.",
553 return mhd_respond(connection, MHD_HTTP_ACCEPTED, "OK.\n");
556 static int request_handler(
558 struct MHD_Connection *connection,
562 const char *upload_data,
563 size_t *upload_data_size,
564 void **connection_cls) {
568 _cleanup_free_ char *hostname = NULL;
571 assert(connection_cls);
575 log_trace("Handling a connection %s %s %s", method, url, version);
578 return process_http_upload(connection,
579 upload_data, upload_data_size,
582 if (!streq(method, "POST"))
583 return mhd_respond(connection, MHD_HTTP_METHOD_NOT_ACCEPTABLE,
584 "Unsupported method.\n");
586 if (!streq(url, "/upload"))
587 return mhd_respond(connection, MHD_HTTP_NOT_FOUND,
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"
598 const union MHD_ConnectionInfo *ci;
600 ci = MHD_get_connection_info(connection,
601 MHD_CONNECTION_INFO_CONNECTION_FD);
603 log_error("MHD_get_connection_info failed: cannot get remote fd");
604 return mhd_respond(connection, MHD_HTTP_INTERNAL_SERVER_ERROR,
605 "Cannot check remote address");
612 if (server->check_trust) {
613 r = check_permissions(connection, &code, &hostname);
617 r = getnameinfo_pretty(fd, &hostname);
619 return mhd_respond(connection, MHD_HTTP_INTERNAL_SERVER_ERROR,
620 "Cannot check remote hostname");
626 r = request_meta(connection_cls, fd, hostname);
628 return respond_oom(connection);
630 return mhd_respond(connection, MHD_HTTP_INTERNAL_SERVER_ERROR,
637 static int setup_microhttpd_server(RemoteServer *s,
642 struct MHD_OptionItem opts[] = {
643 { MHD_OPTION_NOTIFY_COMPLETED, (intptr_t) request_meta_free},
644 { MHD_OPTION_EXTERNAL_LOGGER, (intptr_t) microhttpd_logger},
645 { MHD_OPTION_LISTEN_SOCKET, fd},
653 MHD_USE_PEDANTIC_CHECKS |
654 MHD_USE_EPOLL_LINUX_ONLY |
657 const union MHD_DaemonInfo *info;
663 r = fd_nonblock(fd, true);
665 log_error("Failed to make fd:%d nonblocking: %s", fd, strerror(-r));
672 opts[opts_pos++] = (struct MHD_OptionItem)
673 {MHD_OPTION_HTTPS_MEM_KEY, 0, (char*) key};
674 opts[opts_pos++] = (struct MHD_OptionItem)
675 {MHD_OPTION_HTTPS_MEM_CERT, 0, (char*) cert};
677 flags |= MHD_USE_SSL;
680 opts[opts_pos++] = (struct MHD_OptionItem)
681 {MHD_OPTION_HTTPS_MEM_TRUST, 0, (char*) trust};
684 d = new(MHDDaemonWrapper, 1);
688 d->fd = (uint64_t) fd;
690 d->daemon = MHD_start_daemon(flags, 0,
692 request_handler, NULL,
693 MHD_OPTION_ARRAY, opts,
696 log_error("Failed to start µhttp daemon");
701 log_debug("Started MHD %s daemon on fd:%d (wrapper @ %p)",
702 key ? "HTTPS" : "HTTP", fd, d);
705 info = MHD_get_daemon_info(d->daemon, MHD_DAEMON_INFO_EPOLL_FD_LINUX_ONLY);
707 log_error("µhttp returned NULL daemon info");
712 epoll_fd = info->listen_fd;
714 log_error("µhttp epoll fd is invalid");
719 r = sd_event_add_io(s->events, &d->event,
721 dispatch_http_event, d);
723 log_error("Failed to add event callback: %s", strerror(-r));
727 r = sd_event_source_set_description(d->event, "epoll-fd");
729 log_error("Failed to set source name: %s", strerror(-r));
733 r = hashmap_ensure_allocated(&s->daemons, &uint64_hash_ops);
739 r = hashmap_put(s->daemons, &d->fd, d);
741 log_error("Failed to add daemon to hashmap: %s", strerror(-r));
749 MHD_stop_daemon(d->daemon);
755 static int setup_microhttpd_socket(RemoteServer *s,
762 fd = make_socket_fd(LOG_INFO, address, SOCK_STREAM | SOCK_CLOEXEC);
766 return setup_microhttpd_server(s, fd, key, cert, trust);
769 static int dispatch_http_event(sd_event_source *event,
773 MHDDaemonWrapper *d = userdata;
778 r = MHD_run(d->daemon);
780 log_error("MHD_run failed!");
781 // XXX: unregister daemon
785 return 1; /* work to do */
788 /**********************************************************************
789 **********************************************************************
790 **********************************************************************/
792 static int setup_signals(RemoteServer *s) {
798 assert_se(sigemptyset(&mask) == 0);
799 sigset_add_many(&mask, SIGINT, SIGTERM, -1);
800 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
802 r = sd_event_add_signal(s->events, &s->sigterm_event, SIGTERM, NULL, s);
806 r = sd_event_add_signal(s->events, &s->sigint_event, SIGINT, NULL, s);
813 static int negative_fd(const char *spec) {
814 /* Return a non-positive number as its inverse, -EINVAL otherwise. */
818 r = safe_atoi(spec, &fd);
828 static int remoteserver_init(RemoteServer *s,
837 if ((arg_listen_raw || arg_listen_http) && trust) {
838 log_error("Option --trust makes all non-HTTPS connections untrusted.");
842 r = sd_event_default(&s->events);
844 log_error("Failed to allocate event loop: %s", strerror(-r));
850 assert(server == NULL);
853 r = init_writer_hashmap(s);
857 n = sd_listen_fds(true);
859 log_error("Failed to read listening file descriptors from environment: %s",
863 log_info("Received %d descriptors", n);
865 if (MAX(http_socket, https_socket) >= SD_LISTEN_FDS_START + n) {
866 log_error("Received fewer sockets than expected");
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_info("Received a listening socket (fd:%d)", fd);
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);
879 r = add_raw_socket(s, fd);
880 } else if (sd_is_socket(fd, AF_UNSPEC, 0, false)) {
883 r = getnameinfo_pretty(fd, &hostname);
885 log_error("Failed to retrieve remote name: %s", strerror(-r));
889 log_info("Received a connection socket (fd:%d) from %s", fd, hostname);
891 r = add_source(s, fd, hostname, true);
893 log_error("Unknown socket passed on fd:%d", fd);
899 log_error("Failed to register socket (fd:%d): %s",
906 const char *url, *hostname;
908 url = strappenda(arg_url, "/entries");
911 log_info("Spawning getter %s...", url);
912 fd = spawn_getter(arg_getter, url);
914 log_info("Spawning curl %s...", url);
915 fd = spawn_curl(url);
921 startswith(arg_url, "https://") ?:
922 startswith(arg_url, "http://") ?:
925 r = add_source(s, fd, (char*) hostname, false);
930 if (arg_listen_raw) {
931 log_info("Listening on a socket...");
932 r = setup_raw_socket(s, arg_listen_raw);
937 if (arg_listen_http) {
938 r = setup_microhttpd_socket(s, arg_listen_http, NULL, NULL, NULL);
943 if (arg_listen_https) {
944 r = setup_microhttpd_socket(s, arg_listen_https, key, cert, trust);
949 STRV_FOREACH(file, arg_files) {
950 const char *output_name;
952 if (streq(*file, "-")) {
953 log_info("Using standard input as source.");
956 output_name = "stdin";
958 log_info("Reading file %s...", *file);
960 fd = open(*file, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NONBLOCK);
962 log_error("Failed to open %s: %m", *file);
968 r = add_source(s, fd, (char*) output_name, false);
973 if (s->active == 0) {
974 log_error("Zarro sources specified");
978 if (arg_split_mode == JOURNAL_WRITE_SPLIT_NONE) {
979 /* In this case we know what the writer will be
980 called, so we can create it and verify that we can
981 create output as expected. */
982 r = get_writer(s, NULL, &s->_single_writer);
990 static void server_destroy(RemoteServer *s) {
994 while ((d = hashmap_steal_first(s->daemons))) {
995 MHD_stop_daemon(d->daemon);
996 sd_event_source_unref(d->event);
1000 hashmap_free(s->daemons);
1002 assert(s->sources_size == 0 || s->sources);
1003 for (i = 0; i < s->sources_size; i++)
1004 remove_source(s, i);
1007 writer_unref(s->_single_writer);
1008 hashmap_free(s->writers);
1010 sd_event_source_unref(s->sigterm_event);
1011 sd_event_source_unref(s->sigint_event);
1012 sd_event_source_unref(s->listen_event);
1013 sd_event_unref(s->events);
1015 /* fds that we're listening on remain open... */
1018 /**********************************************************************
1019 **********************************************************************
1020 **********************************************************************/
1022 static int dispatch_raw_source_event(sd_event_source *event,
1027 RemoteServer *s = userdata;
1028 RemoteSource *source;
1031 assert(fd >= 0 && fd < (ssize_t) s->sources_size);
1032 source = s->sources[fd];
1033 assert(source->fd == fd);
1035 r = process_source(source, arg_compress, arg_seal);
1036 if (source->state == STATE_EOF) {
1039 log_info("EOF reached with source fd:%d (%s)",
1040 source->fd, source->name);
1042 remaining = source_non_empty(source);
1044 log_warning("Premature EOF. %zu bytes lost.", remaining);
1045 remove_source(s, source->fd);
1046 log_info("%zd active sources remaining", s->active);
1048 } else if (r == -E2BIG) {
1049 log_error("Entry too big, skipped");
1051 } else if (r == -EAGAIN) {
1054 log_info("Closing connection: %s", strerror(-r));
1055 remove_source(server, fd);
1061 static int dispatch_blocking_source_event(sd_event_source *event,
1063 RemoteSource *source = userdata;
1065 return dispatch_raw_source_event(event, source->fd, EPOLLIN, server);
1068 static int accept_connection(const char* type, int fd,
1069 SocketAddress *addr, char **hostname) {
1072 log_debug("Accepting new %s connection on fd:%d", type, fd);
1073 fd2 = accept4(fd, &addr->sockaddr.sa, &addr->size, SOCK_NONBLOCK|SOCK_CLOEXEC);
1075 log_error("accept() on fd:%d failed: %m", fd);
1079 switch(socket_address_family(addr)) {
1082 _cleanup_free_ char *a = NULL;
1085 r = socket_address_print(addr, &a);
1087 log_error("socket_address_print(): %s", strerror(-r));
1092 r = socknameinfo_pretty(&addr->sockaddr, addr->size, &b);
1098 log_info("Accepted %s %s connection from %s",
1100 socket_address_family(addr) == AF_INET ? "IP" : "IPv6",
1108 log_error("Rejected %s connection with unsupported family %d",
1109 type, socket_address_family(addr));
1116 static int dispatch_raw_connection_event(sd_event_source *event,
1120 RemoteServer *s = userdata;
1122 SocketAddress addr = {
1123 .size = sizeof(union sockaddr_union),
1124 .type = SOCK_STREAM,
1128 fd2 = accept_connection("raw", fd, &addr, &hostname);
1132 return add_source(s, fd2, hostname, true);
1135 /**********************************************************************
1136 **********************************************************************
1137 **********************************************************************/
1139 static const char* const journal_write_split_mode_table[_JOURNAL_WRITE_SPLIT_MAX] = {
1140 [JOURNAL_WRITE_SPLIT_NONE] = "none",
1141 [JOURNAL_WRITE_SPLIT_HOST] = "host",
1144 DEFINE_PRIVATE_STRING_TABLE_LOOKUP(journal_write_split_mode, JournalWriteSplitMode);
1145 static DEFINE_CONFIG_PARSE_ENUM(config_parse_write_split_mode,
1146 journal_write_split_mode,
1147 JournalWriteSplitMode,
1148 "Failed to parse split mode setting");
1150 static int parse_config(void) {
1151 const ConfigTableItem items[] = {
1152 { "Remote", "SplitMode", config_parse_write_split_mode, 0, &arg_split_mode },
1153 { "Remote", "ServerKeyFile", config_parse_path, 0, &arg_key },
1154 { "Remote", "ServerCertificateFile", config_parse_path, 0, &arg_cert },
1155 { "Remote", "TrustedCertificateFile", config_parse_path, 0, &arg_trust },
1158 return config_parse(NULL, PKGSYSCONFDIR "/journal-remote.conf", NULL,
1160 config_item_table_lookup, items,
1161 false, false, true, NULL);
1164 static void help(void) {
1165 printf("%s [OPTIONS...] {FILE|-}...\n\n"
1166 "Write external journal events to journal file(s).\n\n"
1167 " -h --help Show this help\n"
1168 " --version Show package version\n"
1169 " --url=URL Read events from systemd-journal-gatewayd at URL\n"
1170 " --getter=COMMAND Read events from the output of COMMAND\n"
1171 " --listen-raw=ADDR Listen for connections at ADDR\n"
1172 " --listen-http=ADDR Listen for HTTP connections at ADDR\n"
1173 " --listen-https=ADDR Listen for HTTPS connections at ADDR\n"
1174 " -o --output=FILE|DIR Write output to FILE or DIR/external-*.journal\n"
1175 " --compress[=BOOL] XZ-compress the output journal (default: yes)\n"
1176 " --seal[=BOOL] Use event sealing (default: no)\n"
1177 " --key=FILENAME SSL key in PEM format (default:\n"
1178 " \"" PRIV_KEY_FILE "\")\n"
1179 " --cert=FILENAME SSL certificate in PEM format (default:\n"
1180 " \"" CERT_FILE "\")\n"
1181 " --trust=FILENAME|all SSL CA certificate or disable checking (default:\n"
1182 " \"" TRUST_FILE "\")\n"
1183 " --gnutls-log=CATEGORY...\n"
1184 " Specify a list of gnutls logging categories\n"
1185 " --split-mode=none|host How many output files to create\n"
1187 "Note: file descriptors from sd_listen_fds() will be consumed, too.\n"
1188 , program_invocation_short_name);
1191 static int parse_argv(int argc, char *argv[]) {
1193 ARG_VERSION = 0x100,
1208 static const struct option options[] = {
1209 { "help", no_argument, NULL, 'h' },
1210 { "version", no_argument, NULL, ARG_VERSION },
1211 { "url", required_argument, NULL, ARG_URL },
1212 { "getter", required_argument, NULL, ARG_GETTER },
1213 { "listen-raw", required_argument, NULL, ARG_LISTEN_RAW },
1214 { "listen-http", required_argument, NULL, ARG_LISTEN_HTTP },
1215 { "listen-https", required_argument, NULL, ARG_LISTEN_HTTPS },
1216 { "output", required_argument, NULL, 'o' },
1217 { "split-mode", required_argument, NULL, ARG_SPLIT_MODE },
1218 { "compress", optional_argument, NULL, ARG_COMPRESS },
1219 { "seal", optional_argument, NULL, ARG_SEAL },
1220 { "key", required_argument, NULL, ARG_KEY },
1221 { "cert", required_argument, NULL, ARG_CERT },
1222 { "trust", required_argument, NULL, ARG_TRUST },
1223 { "gnutls-log", required_argument, NULL, ARG_GNUTLS_LOG },
1228 bool type_a, type_b;
1233 while ((c = getopt_long(argc, argv, "ho:", options, NULL)) >= 0)
1237 return 0 /* done */;
1240 puts(PACKAGE_STRING);
1241 puts(SYSTEMD_FEATURES);
1242 return 0 /* done */;
1246 log_error("cannot currently set more than one --url");
1255 log_error("cannot currently use --getter more than once");
1259 arg_getter = optarg;
1262 case ARG_LISTEN_RAW:
1263 if (arg_listen_raw) {
1264 log_error("cannot currently use --listen-raw more than once");
1268 arg_listen_raw = optarg;
1271 case ARG_LISTEN_HTTP:
1272 if (arg_listen_http || http_socket >= 0) {
1273 log_error("cannot currently use --listen-http more than once");
1277 r = negative_fd(optarg);
1281 arg_listen_http = optarg;
1284 case ARG_LISTEN_HTTPS:
1285 if (arg_listen_https || https_socket >= 0) {
1286 log_error("cannot currently use --listen-https more than once");
1290 r = negative_fd(optarg);
1294 arg_listen_https = optarg;
1300 log_error("Key file specified twice");
1304 arg_key = strdup(optarg);
1312 log_error("Certificate file specified twice");
1316 arg_cert = strdup(optarg);
1323 if (arg_trust || arg_trust_all) {
1324 log_error("Confusing trusted CA configuration");
1328 if (streq(optarg, "all"))
1329 arg_trust_all = true;
1332 arg_trust = strdup(optarg);
1336 log_error("Option --trust is not available.");
1345 log_error("cannot use --output/-o more than once");
1349 arg_output = optarg;
1352 case ARG_SPLIT_MODE:
1353 arg_split_mode = journal_write_split_mode_from_string(optarg);
1354 if (arg_split_mode == _JOURNAL_WRITE_SPLIT_INVALID) {
1355 log_error("Invalid split mode: %s", optarg);
1362 r = parse_boolean(optarg);
1364 log_error("Failed to parse --compress= parameter.");
1370 arg_compress = true;
1376 r = parse_boolean(optarg);
1378 log_error("Failed to parse --seal= parameter.");
1388 case ARG_GNUTLS_LOG: {
1390 const char *word, *state;
1393 FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
1396 cat = strndup(word, size);
1400 if (strv_consume(&arg_gnutls_log, cat) < 0)
1405 log_error("Option --gnutls-log is not available.");
1414 assert_not_reached("Unknown option code.");
1418 arg_files = argv + optind;
1420 type_a = arg_getter || !strv_isempty(arg_files);
1423 || arg_listen_http || arg_listen_https
1424 || sd_listen_fds(false) > 0;
1425 if (type_a && type_b) {
1426 log_error("Cannot use file input or --getter with "
1427 "--arg-listen-... or socket activation.");
1432 log_error("Option --output must be specified with file input or --getter.");
1436 arg_split_mode = JOURNAL_WRITE_SPLIT_NONE;
1439 if (arg_split_mode == JOURNAL_WRITE_SPLIT_NONE
1440 && arg_output && is_dir(arg_output, true) > 0) {
1441 log_error("For SplitMode=none, output must be a file.");
1445 if (arg_split_mode == JOURNAL_WRITE_SPLIT_HOST
1446 && arg_output && is_dir(arg_output, true) <= 0) {
1447 log_error("For SplitMode=host, output must be a directory.");
1451 log_debug("Full config: SplitMode=%s Key=%s Cert=%s Trust=%s",
1452 journal_write_split_mode_to_string(arg_split_mode),
1457 return 1 /* work to do */;
1460 static int load_certificates(char **key, char **cert, char **trust) {
1463 r = read_full_file(arg_key ?: PRIV_KEY_FILE, key, NULL);
1465 log_error("Failed to read key from file '%s': %s",
1466 arg_key ?: PRIV_KEY_FILE, strerror(-r));
1470 r = read_full_file(arg_cert ?: CERT_FILE, cert, NULL);
1472 log_error("Failed to read certificate from file '%s': %s",
1473 arg_cert ?: CERT_FILE, strerror(-r));
1478 log_info("Certificate checking disabled.");
1480 r = read_full_file(arg_trust ?: TRUST_FILE, trust, NULL);
1482 log_error("Failed to read CA certificate file '%s': %s",
1483 arg_trust ?: TRUST_FILE, strerror(-r));
1491 static int setup_gnutls_logger(char **categories) {
1492 if (!arg_listen_http && !arg_listen_https)
1500 gnutls_global_set_log_function(log_func_gnutls);
1503 STRV_FOREACH(cat, categories) {
1504 r = log_enable_gnutls_category(*cat);
1509 log_reset_gnutls_level();
1516 int main(int argc, char **argv) {
1517 RemoteServer s = {};
1519 _cleanup_free_ char *key = NULL, *cert = NULL, *trust = NULL;
1521 log_show_color(true);
1522 log_parse_environment();
1526 return EXIT_FAILURE;
1528 r = parse_argv(argc, argv);
1530 return r == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
1532 r = setup_gnutls_logger(arg_gnutls_log);
1534 return EXIT_FAILURE;
1536 if (arg_listen_https || https_socket >= 0)
1537 if (load_certificates(&key, &cert, &trust) < 0)
1538 return EXIT_FAILURE;
1540 if (remoteserver_init(&s, key, cert, trust) < 0)
1541 return EXIT_FAILURE;
1543 r = sd_event_set_watchdog(s.events, true);
1545 log_error("Failed to enable watchdog: %s", strerror(-r));
1547 log_debug("Watchdog is %s.", r > 0 ? "enabled" : "disabled");
1549 log_debug("%s running as pid "PID_FMT,
1550 program_invocation_short_name, getpid());
1553 "STATUS=Processing requests...");
1556 r = sd_event_get_state(s.events);
1559 if (r == SD_EVENT_FINISHED)
1562 r = sd_event_run(s.events, -1);
1564 log_error("Failed to run event loop: %s", strerror(-r));
1571 "STATUS=Shutting down after writing %" PRIu64 " entries...", s.event_count);
1572 log_info("Finishing after writing %" PRIu64 " entries", s.event_count);
1580 return r >= 0 ? EXIT_SUCCESS : EXIT_FAILURE;