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 return log_error_errno(r, "Failed to split getter option: %m");
156 r = strv_extend(&words, url);
158 return log_error_errno(r, "Failed to create command line: %m");
160 r = spawn_child(words[0], words);
162 log_error("Failed to spawn getter %s: %m", getter);
167 #define filename_escape(s) xescape((s), "/ ")
169 static int open_output(Writer *w, const char* host) {
170 _cleanup_free_ char *_output = NULL;
174 switch (arg_split_mode) {
175 case JOURNAL_WRITE_SPLIT_NONE:
176 output = arg_output ?: REMOTE_JOURNAL_PATH "/remote.journal";
179 case JOURNAL_WRITE_SPLIT_HOST: {
180 _cleanup_free_ char *name;
184 name = filename_escape(host);
188 r = asprintf(&_output, "%s/remote-%s.journal",
189 arg_output ?: REMOTE_JOURNAL_PATH,
199 assert_not_reached("what?");
202 r = journal_file_open_reliably(output,
203 O_RDWR|O_CREAT, 0640,
204 arg_compress, arg_seal,
209 log_error_errno(r, "Failed to open output journal %s: %m",
212 log_info("Opened output file %s", w->journal->path);
216 /**********************************************************************
217 **********************************************************************
218 **********************************************************************/
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,
226 assert(arg_split_mode >= 0 && arg_split_mode < (int) ELEMENTSOF(hash_ops));
228 s->writers = hashmap_new(hash_ops[arg_split_mode]);
235 static int get_writer(RemoteServer *s, const char *host,
238 _cleanup_writer_unref_ Writer *w = NULL;
241 switch(arg_split_mode) {
242 case JOURNAL_WRITE_SPLIT_NONE:
243 key = "one and only";
246 case JOURNAL_WRITE_SPLIT_HOST:
252 assert_not_reached("what split mode?");
255 w = hashmap_get(s->writers, key);
263 if (arg_split_mode == JOURNAL_WRITE_SPLIT_HOST) {
264 w->hashmap_key = strdup(key);
269 r = open_output(w, host);
273 r = hashmap_put(s->writers, w->hashmap_key ?: key, w);
283 /**********************************************************************
284 **********************************************************************
285 **********************************************************************/
287 /* This should go away as soon as µhttpd allows state to be passed around. */
288 static RemoteServer *server;
290 static int dispatch_raw_source_event(sd_event_source *event,
294 static int dispatch_blocking_source_event(sd_event_source *event,
296 static int dispatch_raw_connection_event(sd_event_source *event,
300 static int dispatch_http_event(sd_event_source *event,
305 static int get_source_for_fd(RemoteServer *s,
306 int fd, char *name, RemoteSource **source) {
310 /* This takes ownership of name, but only on success. */
315 if (!GREEDY_REALLOC0(s->sources, s->sources_size, fd + 1))
318 r = get_writer(s, name, &writer);
320 return log_warning_errno(r, "Failed to get writer for source %s: %m",
323 if (s->sources[fd] == NULL) {
324 s->sources[fd] = source_new(fd, false, name, writer);
325 if (!s->sources[fd]) {
326 writer_unref(writer);
333 *source = s->sources[fd];
337 static int remove_source(RemoteServer *s, int fd) {
338 RemoteSource *source;
341 assert(fd >= 0 && fd < (ssize_t) s->sources_size);
343 source = s->sources[fd];
345 /* this closes fd too */
347 s->sources[fd] = NULL;
354 static int add_source(RemoteServer *s, int fd, char* name, bool own_name) {
356 RemoteSource *source;
359 /* This takes ownership of name, even on failure, if own_name is true. */
371 r = get_source_for_fd(s, fd, name, &source);
373 log_error_errno(r, "Failed to create source for fd:%d (%s): %m",
379 r = sd_event_add_io(s->events, &source->event,
380 fd, EPOLLIN|EPOLLRDHUP|EPOLLPRI,
381 dispatch_raw_source_event, s);
383 log_debug("Falling back to sd_event_add_defer for fd:%d (%s)", fd, name);
384 r = sd_event_add_defer(s->events, &source->event,
385 dispatch_blocking_source_event, source);
387 sd_event_source_set_enabled(source->event, SD_EVENT_ON);
390 log_error_errno(r, "Failed to register event source for fd:%d: %m",
395 r = sd_event_source_set_description(source->event, name);
397 log_error_errno(r, "Failed to set source name for fd:%d: %m", fd);
401 return 1; /* work to do */
404 remove_source(s, fd);
408 static int add_raw_socket(RemoteServer *s, int fd) {
410 _cleanup_close_ int fd_ = fd;
411 char name[strlen("raw-socket-") + DECIMAL_STR_MAX(int)];
415 r = sd_event_add_io(s->events, &s->listen_event,
417 dispatch_raw_connection_event, s);
421 snprintf(name, sizeof(name), "raw-socket-%d", fd);
423 r = sd_event_source_set_description(s->listen_event, name);
432 static int setup_raw_socket(RemoteServer *s, const char *address) {
435 fd = make_socket_fd(LOG_INFO, address, SOCK_STREAM | SOCK_CLOEXEC);
439 return add_raw_socket(s, fd);
442 /**********************************************************************
443 **********************************************************************
444 **********************************************************************/
446 static int request_meta(void **connection_cls, int fd, char *hostname) {
447 RemoteSource *source;
451 assert(connection_cls);
455 r = get_writer(server, hostname, &writer);
457 return log_warning_errno(r, "Failed to get writer for source %s: %m",
460 source = source_new(fd, true, hostname, writer);
462 writer_unref(writer);
466 log_debug("Added RemoteSource as connection metadata %p", source);
468 *connection_cls = source;
472 static void request_meta_free(void *cls,
473 struct MHD_Connection *connection,
474 void **connection_cls,
475 enum MHD_RequestTerminationCode toe) {
478 assert(connection_cls);
482 log_debug("Cleaning up connection metadata %p", s);
484 *connection_cls = NULL;
488 static int process_http_upload(
489 struct MHD_Connection *connection,
490 const char *upload_data,
491 size_t *upload_data_size,
492 RemoteSource *source) {
494 bool finished = false;
500 log_trace("%s: connection %p, %zu bytes",
501 __func__, connection, *upload_data_size);
503 if (*upload_data_size) {
504 log_trace("Received %zu bytes", *upload_data_size);
506 r = push_data(source, upload_data, *upload_data_size);
508 return mhd_respond_oom(connection);
510 *upload_data_size = 0;
515 r = process_source(source, arg_compress, arg_seal);
516 if (r == -EAGAIN || r == -EWOULDBLOCK)
519 log_warning("Failed to process data for connection %p", connection);
521 return mhd_respondf(connection,
522 MHD_HTTP_REQUEST_ENTITY_TOO_LARGE,
523 "Entry is too large, maximum is %u bytes.\n",
526 return mhd_respondf(connection,
527 MHD_HTTP_UNPROCESSABLE_ENTITY,
528 "Processing failed: %s.", strerror(-r));
535 /* The upload is finished */
537 remaining = source_non_empty(source);
539 log_warning("Premature EOFbyte. %zu bytes lost.", remaining);
540 return mhd_respondf(connection, MHD_HTTP_EXPECTATION_FAILED,
541 "Premature EOF. %zu bytes of trailing data not processed.",
545 return mhd_respond(connection, MHD_HTTP_ACCEPTED, "OK.\n");
548 static int request_handler(
550 struct MHD_Connection *connection,
554 const char *upload_data,
555 size_t *upload_data_size,
556 void **connection_cls) {
560 _cleanup_free_ char *hostname = NULL;
563 assert(connection_cls);
567 log_trace("Handling a connection %s %s %s", method, url, version);
570 return process_http_upload(connection,
571 upload_data, upload_data_size,
574 if (!streq(method, "POST"))
575 return mhd_respond(connection, MHD_HTTP_METHOD_NOT_ACCEPTABLE,
576 "Unsupported method.\n");
578 if (!streq(url, "/upload"))
579 return mhd_respond(connection, MHD_HTTP_NOT_FOUND,
582 header = MHD_lookup_connection_value(connection,
583 MHD_HEADER_KIND, "Content-Type");
584 if (!header || !streq(header, "application/vnd.fdo.journal"))
585 return mhd_respond(connection, MHD_HTTP_UNSUPPORTED_MEDIA_TYPE,
586 "Content-Type: application/vnd.fdo.journal"
590 const union MHD_ConnectionInfo *ci;
592 ci = MHD_get_connection_info(connection,
593 MHD_CONNECTION_INFO_CONNECTION_FD);
595 log_error("MHD_get_connection_info failed: cannot get remote fd");
596 return mhd_respond(connection, MHD_HTTP_INTERNAL_SERVER_ERROR,
597 "Cannot check remote address");
604 if (server->check_trust) {
605 r = check_permissions(connection, &code, &hostname);
609 r = getnameinfo_pretty(fd, &hostname);
611 return mhd_respond(connection, MHD_HTTP_INTERNAL_SERVER_ERROR,
612 "Cannot check remote hostname");
618 r = request_meta(connection_cls, fd, hostname);
620 return respond_oom(connection);
622 return mhd_respond(connection, MHD_HTTP_INTERNAL_SERVER_ERROR,
629 static int setup_microhttpd_server(RemoteServer *s,
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},
645 MHD_USE_PEDANTIC_CHECKS |
646 MHD_USE_EPOLL_LINUX_ONLY |
649 const union MHD_DaemonInfo *info;
655 r = fd_nonblock(fd, true);
657 log_error_errno(r, "Failed to make fd:%d nonblocking: %m", fd);
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};
669 flags |= MHD_USE_SSL;
672 opts[opts_pos++] = (struct MHD_OptionItem)
673 {MHD_OPTION_HTTPS_MEM_TRUST, 0, (char*) trust};
676 d = new(MHDDaemonWrapper, 1);
680 d->fd = (uint64_t) fd;
682 d->daemon = MHD_start_daemon(flags, 0,
684 request_handler, NULL,
685 MHD_OPTION_ARRAY, opts,
688 log_error("Failed to start µhttp daemon");
693 log_debug("Started MHD %s daemon on fd:%d (wrapper @ %p)",
694 key ? "HTTPS" : "HTTP", fd, d);
697 info = MHD_get_daemon_info(d->daemon, MHD_DAEMON_INFO_EPOLL_FD_LINUX_ONLY);
699 log_error("µhttp returned NULL daemon info");
704 epoll_fd = info->listen_fd;
706 log_error("µhttp epoll fd is invalid");
711 r = sd_event_add_io(s->events, &d->event,
713 dispatch_http_event, d);
715 log_error_errno(r, "Failed to add event callback: %m");
719 r = sd_event_source_set_description(d->event, "epoll-fd");
721 log_error_errno(r, "Failed to set source name: %m");
725 r = hashmap_ensure_allocated(&s->daemons, &uint64_hash_ops);
731 r = hashmap_put(s->daemons, &d->fd, d);
733 log_error_errno(r, "Failed to add daemon to hashmap: %m");
741 MHD_stop_daemon(d->daemon);
747 static int setup_microhttpd_socket(RemoteServer *s,
754 fd = make_socket_fd(LOG_INFO, address, SOCK_STREAM | SOCK_CLOEXEC);
758 return setup_microhttpd_server(s, fd, key, cert, trust);
761 static int dispatch_http_event(sd_event_source *event,
765 MHDDaemonWrapper *d = userdata;
770 r = MHD_run(d->daemon);
772 log_error("MHD_run failed!");
773 // XXX: unregister daemon
777 return 1; /* work to do */
780 /**********************************************************************
781 **********************************************************************
782 **********************************************************************/
784 static int setup_signals(RemoteServer *s) {
790 assert_se(sigemptyset(&mask) == 0);
791 sigset_add_many(&mask, SIGINT, SIGTERM, -1);
792 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
794 r = sd_event_add_signal(s->events, &s->sigterm_event, SIGTERM, NULL, s);
798 r = sd_event_add_signal(s->events, &s->sigint_event, SIGINT, NULL, s);
805 static int negative_fd(const char *spec) {
806 /* Return a non-positive number as its inverse, -EINVAL otherwise. */
810 r = safe_atoi(spec, &fd);
820 static int remoteserver_init(RemoteServer *s,
829 if ((arg_listen_raw || arg_listen_http) && trust) {
830 log_error("Option --trust makes all non-HTTPS connections untrusted.");
834 r = sd_event_default(&s->events);
836 return log_error_errno(r, "Failed to allocate event loop: %m");
840 assert(server == NULL);
843 r = init_writer_hashmap(s);
847 n = sd_listen_fds(true);
849 return log_error_errno(n, "Failed to read listening file descriptors from environment: %m");
851 log_info("Received %d descriptors", n);
853 if (MAX(http_socket, https_socket) >= SD_LISTEN_FDS_START + n) {
854 log_error("Received fewer sockets than expected");
858 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) {
859 if (sd_is_socket(fd, AF_UNSPEC, 0, true)) {
860 log_info("Received a listening socket (fd:%d)", fd);
862 if (fd == http_socket)
863 r = setup_microhttpd_server(s, fd, NULL, NULL, NULL);
864 else if (fd == https_socket)
865 r = setup_microhttpd_server(s, fd, key, cert, trust);
867 r = add_raw_socket(s, fd);
868 } else if (sd_is_socket(fd, AF_UNSPEC, 0, false)) {
871 r = getnameinfo_pretty(fd, &hostname);
873 return log_error_errno(r, "Failed to retrieve remote name: %m");
875 log_info("Received a connection socket (fd:%d) from %s", fd, hostname);
877 r = add_source(s, fd, hostname, true);
879 log_error("Unknown socket passed on fd:%d", fd);
885 return log_error_errno(r, "Failed to register socket (fd:%d): %m",
890 const char *url, *hostname;
892 url = strappenda(arg_url, "/entries");
895 log_info("Spawning getter %s...", url);
896 fd = spawn_getter(arg_getter, url);
898 log_info("Spawning curl %s...", url);
899 fd = spawn_curl(url);
905 startswith(arg_url, "https://") ?:
906 startswith(arg_url, "http://") ?:
909 r = add_source(s, fd, (char*) hostname, false);
914 if (arg_listen_raw) {
915 log_info("Listening on a socket...");
916 r = setup_raw_socket(s, arg_listen_raw);
921 if (arg_listen_http) {
922 r = setup_microhttpd_socket(s, arg_listen_http, NULL, NULL, NULL);
927 if (arg_listen_https) {
928 r = setup_microhttpd_socket(s, arg_listen_https, key, cert, trust);
933 STRV_FOREACH(file, arg_files) {
934 const char *output_name;
936 if (streq(*file, "-")) {
937 log_info("Using standard input as source.");
940 output_name = "stdin";
942 log_info("Reading file %s...", *file);
944 fd = open(*file, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NONBLOCK);
946 log_error("Failed to open %s: %m", *file);
952 r = add_source(s, fd, (char*) output_name, false);
957 if (s->active == 0) {
958 log_error("Zarro sources specified");
962 if (arg_split_mode == JOURNAL_WRITE_SPLIT_NONE) {
963 /* In this case we know what the writer will be
964 called, so we can create it and verify that we can
965 create output as expected. */
966 r = get_writer(s, NULL, &s->_single_writer);
974 static void server_destroy(RemoteServer *s) {
978 while ((d = hashmap_steal_first(s->daemons))) {
979 MHD_stop_daemon(d->daemon);
980 sd_event_source_unref(d->event);
984 hashmap_free(s->daemons);
986 assert(s->sources_size == 0 || s->sources);
987 for (i = 0; i < s->sources_size; i++)
991 writer_unref(s->_single_writer);
992 hashmap_free(s->writers);
994 sd_event_source_unref(s->sigterm_event);
995 sd_event_source_unref(s->sigint_event);
996 sd_event_source_unref(s->listen_event);
997 sd_event_unref(s->events);
999 /* fds that we're listening on remain open... */
1002 /**********************************************************************
1003 **********************************************************************
1004 **********************************************************************/
1006 static int dispatch_raw_source_event(sd_event_source *event,
1011 RemoteServer *s = userdata;
1012 RemoteSource *source;
1015 assert(fd >= 0 && fd < (ssize_t) s->sources_size);
1016 source = s->sources[fd];
1017 assert(source->fd == fd);
1019 r = process_source(source, arg_compress, arg_seal);
1020 if (source->state == STATE_EOF) {
1023 log_info("EOF reached with source fd:%d (%s)",
1024 source->fd, source->name);
1026 remaining = source_non_empty(source);
1028 log_warning("Premature EOF. %zu bytes lost.", remaining);
1029 remove_source(s, source->fd);
1030 log_info("%zd active sources remaining", s->active);
1032 } else if (r == -E2BIG) {
1033 log_error("Entry too big, skipped");
1035 } else if (r == -EAGAIN) {
1038 log_info_errno(r, "Closing connection: %m");
1039 remove_source(server, fd);
1045 static int dispatch_blocking_source_event(sd_event_source *event,
1047 RemoteSource *source = userdata;
1049 return dispatch_raw_source_event(event, source->fd, EPOLLIN, server);
1052 static int accept_connection(const char* type, int fd,
1053 SocketAddress *addr, char **hostname) {
1056 log_debug("Accepting new %s connection on fd:%d", type, fd);
1057 fd2 = accept4(fd, &addr->sockaddr.sa, &addr->size, SOCK_NONBLOCK|SOCK_CLOEXEC);
1059 log_error("accept() on fd:%d failed: %m", fd);
1063 switch(socket_address_family(addr)) {
1066 _cleanup_free_ char *a = NULL;
1069 r = socket_address_print(addr, &a);
1071 log_error_errno(r, "socket_address_print(): %m");
1076 r = socknameinfo_pretty(&addr->sockaddr, addr->size, &b);
1082 log_info("Accepted %s %s connection from %s",
1084 socket_address_family(addr) == AF_INET ? "IP" : "IPv6",
1092 log_error("Rejected %s connection with unsupported family %d",
1093 type, socket_address_family(addr));
1100 static int dispatch_raw_connection_event(sd_event_source *event,
1104 RemoteServer *s = userdata;
1106 SocketAddress addr = {
1107 .size = sizeof(union sockaddr_union),
1108 .type = SOCK_STREAM,
1112 fd2 = accept_connection("raw", fd, &addr, &hostname);
1116 return add_source(s, fd2, hostname, true);
1119 /**********************************************************************
1120 **********************************************************************
1121 **********************************************************************/
1123 static const char* const journal_write_split_mode_table[_JOURNAL_WRITE_SPLIT_MAX] = {
1124 [JOURNAL_WRITE_SPLIT_NONE] = "none",
1125 [JOURNAL_WRITE_SPLIT_HOST] = "host",
1128 DEFINE_PRIVATE_STRING_TABLE_LOOKUP(journal_write_split_mode, JournalWriteSplitMode);
1129 static DEFINE_CONFIG_PARSE_ENUM(config_parse_write_split_mode,
1130 journal_write_split_mode,
1131 JournalWriteSplitMode,
1132 "Failed to parse split mode setting");
1134 static int parse_config(void) {
1135 const ConfigTableItem items[] = {
1136 { "Remote", "SplitMode", config_parse_write_split_mode, 0, &arg_split_mode },
1137 { "Remote", "ServerKeyFile", config_parse_path, 0, &arg_key },
1138 { "Remote", "ServerCertificateFile", config_parse_path, 0, &arg_cert },
1139 { "Remote", "TrustedCertificateFile", config_parse_path, 0, &arg_trust },
1142 return config_parse(NULL, PKGSYSCONFDIR "/journal-remote.conf", NULL,
1144 config_item_table_lookup, items,
1145 false, false, true, NULL);
1148 static void help(void) {
1149 printf("%s [OPTIONS...] {FILE|-}...\n\n"
1150 "Write external journal events to journal file(s).\n\n"
1151 " -h --help Show this help\n"
1152 " --version Show package version\n"
1153 " --url=URL Read events from systemd-journal-gatewayd at URL\n"
1154 " --getter=COMMAND Read events from the output of COMMAND\n"
1155 " --listen-raw=ADDR Listen for connections at ADDR\n"
1156 " --listen-http=ADDR Listen for HTTP connections at ADDR\n"
1157 " --listen-https=ADDR Listen for HTTPS connections at ADDR\n"
1158 " -o --output=FILE|DIR Write output to FILE or DIR/external-*.journal\n"
1159 " --compress[=BOOL] XZ-compress the output journal (default: yes)\n"
1160 " --seal[=BOOL] Use event sealing (default: no)\n"
1161 " --key=FILENAME SSL key in PEM format (default:\n"
1162 " \"" PRIV_KEY_FILE "\")\n"
1163 " --cert=FILENAME SSL certificate in PEM format (default:\n"
1164 " \"" CERT_FILE "\")\n"
1165 " --trust=FILENAME|all SSL CA certificate or disable checking (default:\n"
1166 " \"" TRUST_FILE "\")\n"
1167 " --gnutls-log=CATEGORY...\n"
1168 " Specify a list of gnutls logging categories\n"
1169 " --split-mode=none|host How many output files to create\n"
1171 "Note: file descriptors from sd_listen_fds() will be consumed, too.\n"
1172 , program_invocation_short_name);
1175 static int parse_argv(int argc, char *argv[]) {
1177 ARG_VERSION = 0x100,
1192 static const struct option options[] = {
1193 { "help", no_argument, NULL, 'h' },
1194 { "version", no_argument, NULL, ARG_VERSION },
1195 { "url", required_argument, NULL, ARG_URL },
1196 { "getter", required_argument, NULL, ARG_GETTER },
1197 { "listen-raw", required_argument, NULL, ARG_LISTEN_RAW },
1198 { "listen-http", required_argument, NULL, ARG_LISTEN_HTTP },
1199 { "listen-https", required_argument, NULL, ARG_LISTEN_HTTPS },
1200 { "output", required_argument, NULL, 'o' },
1201 { "split-mode", required_argument, NULL, ARG_SPLIT_MODE },
1202 { "compress", optional_argument, NULL, ARG_COMPRESS },
1203 { "seal", optional_argument, NULL, ARG_SEAL },
1204 { "key", required_argument, NULL, ARG_KEY },
1205 { "cert", required_argument, NULL, ARG_CERT },
1206 { "trust", required_argument, NULL, ARG_TRUST },
1207 { "gnutls-log", required_argument, NULL, ARG_GNUTLS_LOG },
1212 bool type_a, type_b;
1217 while ((c = getopt_long(argc, argv, "ho:", options, NULL)) >= 0)
1221 return 0 /* done */;
1224 puts(PACKAGE_STRING);
1225 puts(SYSTEMD_FEATURES);
1226 return 0 /* done */;
1230 log_error("cannot currently set more than one --url");
1239 log_error("cannot currently use --getter more than once");
1243 arg_getter = optarg;
1246 case ARG_LISTEN_RAW:
1247 if (arg_listen_raw) {
1248 log_error("cannot currently use --listen-raw more than once");
1252 arg_listen_raw = optarg;
1255 case ARG_LISTEN_HTTP:
1256 if (arg_listen_http || http_socket >= 0) {
1257 log_error("cannot currently use --listen-http more than once");
1261 r = negative_fd(optarg);
1265 arg_listen_http = optarg;
1268 case ARG_LISTEN_HTTPS:
1269 if (arg_listen_https || https_socket >= 0) {
1270 log_error("cannot currently use --listen-https more than once");
1274 r = negative_fd(optarg);
1278 arg_listen_https = optarg;
1284 log_error("Key file specified twice");
1288 arg_key = strdup(optarg);
1296 log_error("Certificate file specified twice");
1300 arg_cert = strdup(optarg);
1307 if (arg_trust || arg_trust_all) {
1308 log_error("Confusing trusted CA configuration");
1312 if (streq(optarg, "all"))
1313 arg_trust_all = true;
1316 arg_trust = strdup(optarg);
1320 log_error("Option --trust is not available.");
1329 log_error("cannot use --output/-o more than once");
1333 arg_output = optarg;
1336 case ARG_SPLIT_MODE:
1337 arg_split_mode = journal_write_split_mode_from_string(optarg);
1338 if (arg_split_mode == _JOURNAL_WRITE_SPLIT_INVALID) {
1339 log_error("Invalid split mode: %s", optarg);
1346 r = parse_boolean(optarg);
1348 log_error("Failed to parse --compress= parameter.");
1354 arg_compress = true;
1360 r = parse_boolean(optarg);
1362 log_error("Failed to parse --seal= parameter.");
1372 case ARG_GNUTLS_LOG: {
1374 const char *word, *state;
1377 FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
1380 cat = strndup(word, size);
1384 if (strv_consume(&arg_gnutls_log, cat) < 0)
1389 log_error("Option --gnutls-log is not available.");
1398 assert_not_reached("Unknown option code.");
1402 arg_files = argv + optind;
1404 type_a = arg_getter || !strv_isempty(arg_files);
1407 || arg_listen_http || arg_listen_https
1408 || sd_listen_fds(false) > 0;
1409 if (type_a && type_b) {
1410 log_error("Cannot use file input or --getter with "
1411 "--arg-listen-... or socket activation.");
1416 log_error("Option --output must be specified with file input or --getter.");
1420 arg_split_mode = JOURNAL_WRITE_SPLIT_NONE;
1423 if (arg_split_mode == JOURNAL_WRITE_SPLIT_NONE
1424 && arg_output && is_dir(arg_output, true) > 0) {
1425 log_error("For SplitMode=none, output must be a file.");
1429 if (arg_split_mode == JOURNAL_WRITE_SPLIT_HOST
1430 && arg_output && is_dir(arg_output, true) <= 0) {
1431 log_error("For SplitMode=host, output must be a directory.");
1435 log_debug("Full config: SplitMode=%s Key=%s Cert=%s Trust=%s",
1436 journal_write_split_mode_to_string(arg_split_mode),
1441 return 1 /* work to do */;
1444 static int load_certificates(char **key, char **cert, char **trust) {
1447 r = read_full_file(arg_key ?: PRIV_KEY_FILE, key, NULL);
1449 return log_error_errno(r, "Failed to read key from file '%s': %m",
1450 arg_key ?: PRIV_KEY_FILE);
1452 r = read_full_file(arg_cert ?: CERT_FILE, cert, NULL);
1454 return log_error_errno(r, "Failed to read certificate from file '%s': %m",
1455 arg_cert ?: CERT_FILE);
1458 log_info("Certificate checking disabled.");
1460 r = read_full_file(arg_trust ?: TRUST_FILE, trust, NULL);
1462 return log_error_errno(r, "Failed to read CA certificate file '%s': %m",
1463 arg_trust ?: TRUST_FILE);
1469 static int setup_gnutls_logger(char **categories) {
1470 if (!arg_listen_http && !arg_listen_https)
1478 gnutls_global_set_log_function(log_func_gnutls);
1481 STRV_FOREACH(cat, categories) {
1482 r = log_enable_gnutls_category(*cat);
1487 log_reset_gnutls_level();
1494 int main(int argc, char **argv) {
1495 RemoteServer s = {};
1497 _cleanup_free_ char *key = NULL, *cert = NULL, *trust = NULL;
1499 log_show_color(true);
1500 log_parse_environment();
1504 return EXIT_FAILURE;
1506 r = parse_argv(argc, argv);
1508 return r == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
1510 r = setup_gnutls_logger(arg_gnutls_log);
1512 return EXIT_FAILURE;
1514 if (arg_listen_https || https_socket >= 0)
1515 if (load_certificates(&key, &cert, &trust) < 0)
1516 return EXIT_FAILURE;
1518 if (remoteserver_init(&s, key, cert, trust) < 0)
1519 return EXIT_FAILURE;
1521 r = sd_event_set_watchdog(s.events, true);
1523 log_error_errno(r, "Failed to enable watchdog: %m");
1525 log_debug("Watchdog is %s.", r > 0 ? "enabled" : "disabled");
1527 log_debug("%s running as pid "PID_FMT,
1528 program_invocation_short_name, getpid());
1531 "STATUS=Processing requests...");
1534 r = sd_event_get_state(s.events);
1537 if (r == SD_EVENT_FINISHED)
1540 r = sd_event_run(s.events, -1);
1542 log_error_errno(r, "Failed to run event loop: %m");
1549 "STATUS=Shutting down after writing %" PRIu64 " entries...", s.event_count);
1550 log_info("Finishing after writing %" PRIu64 " entries", s.event_count);
1558 return r >= 0 ? EXIT_SUCCESS : EXIT_FAILURE;