1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2014 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/>.
23 #include <curl/curl.h>
28 #include "sd-daemon.h"
35 #include "conf-parser.h"
36 #include "journal-upload.h"
38 #define PRIV_KEY_FILE CERTIFICATE_ROOT "/private/journal-upload.pem"
39 #define CERT_FILE CERTIFICATE_ROOT "/certs/journal-upload.pem"
40 #define TRUST_FILE CERTIFICATE_ROOT "/ca/trusted.pem"
41 #define DEFAULT_PORT 19532
43 static const char* arg_url;
45 static void close_fd_input(Uploader *u);
47 static const char *arg_key = NULL;
48 static const char *arg_cert = NULL;
49 static const char *arg_trust = NULL;
51 static const char *arg_directory = NULL;
52 static char **arg_file = NULL;
53 static const char *arg_cursor = NULL;
54 static bool arg_after_cursor = false;
55 static int arg_journal_type = 0;
56 static const char *arg_machine = NULL;
57 static bool arg_merge = false;
58 static int arg_follow = -1;
59 static const char *arg_save_state = NULL;
61 #define SERVER_ANSWER_KEEP 2048
63 #define STATE_FILE "/var/lib/systemd/journal-upload/state"
65 #define easy_setopt(curl, opt, value, level, cmd) \
67 code = curl_easy_setopt(curl, opt, value); \
70 "curl_easy_setopt " #opt " failed: %s", \
71 curl_easy_strerror(code)); \
76 static size_t output_callback(char *buf,
84 log_debug("The server answers (%zu bytes): %.*s",
85 size*nmemb, (int)(size*nmemb), buf);
87 if (nmemb && !u->answer) {
88 u->answer = strndup(buf, size*nmemb);
90 log_warning("Failed to store server answer (%zu bytes): %s",
91 size*nmemb, strerror(ENOMEM));
97 static int check_cursor_updating(Uploader *u) {
98 _cleanup_free_ char *temp_path = NULL;
99 _cleanup_fclose_ FILE *f = NULL;
105 r = mkdir_parents(u->state_file, 0755);
107 log_error("Cannot create parent directory of state file %s: %s",
108 u->state_file, strerror(-r));
112 r = fopen_temporary(u->state_file, &f, &temp_path);
114 log_error("Cannot save state to %s: %s",
115 u->state_file, strerror(-r));
123 static int update_cursor_state(Uploader *u) {
124 _cleanup_free_ char *temp_path = NULL;
125 _cleanup_fclose_ FILE *f = NULL;
128 if (!u->state_file || !u->last_cursor)
131 r = fopen_temporary(u->state_file, &f, &temp_path);
136 "# This is private data. Do not parse.\n"
142 if (ferror(f) || rename(temp_path, u->state_file) < 0) {
144 unlink(u->state_file);
150 log_error("Failed to save state %s: %s", u->state_file, strerror(-r));
155 static int load_cursor_state(Uploader *u) {
161 r = parse_env_file(u->state_file, NEWLINE,
162 "LAST_CURSOR", &u->last_cursor,
165 if (r < 0 && r != -ENOENT) {
166 log_error("Failed to read state file %s: %s",
167 u->state_file, strerror(-r));
176 int start_upload(Uploader *u,
177 size_t (*input_callback)(void *ptr,
185 assert(input_callback);
188 struct curl_slist *h;
190 h = curl_slist_append(NULL, "Content-Type: application/vnd.fdo.journal");
194 h = curl_slist_append(h, "Transfer-Encoding: chunked");
196 curl_slist_free_all(h);
200 h = curl_slist_append(h, "Accept: text/plain");
202 curl_slist_free_all(h);
212 curl = curl_easy_init();
214 log_error("Call to curl_easy_init failed.");
218 /* tell it to POST to the URL */
219 easy_setopt(curl, CURLOPT_POST, 1L,
220 LOG_ERR, return -EXFULL);
222 easy_setopt(curl, CURLOPT_ERRORBUFFER, u->error,
223 LOG_ERR, return -EXFULL);
225 /* set where to write to */
226 easy_setopt(curl, CURLOPT_WRITEFUNCTION, output_callback,
227 LOG_ERR, return -EXFULL);
229 easy_setopt(curl, CURLOPT_WRITEDATA, data,
230 LOG_ERR, return -EXFULL);
232 /* set where to read from */
233 easy_setopt(curl, CURLOPT_READFUNCTION, input_callback,
234 LOG_ERR, return -EXFULL);
236 easy_setopt(curl, CURLOPT_READDATA, data,
237 LOG_ERR, return -EXFULL);
239 /* use our special own mime type and chunked transfer */
240 easy_setopt(curl, CURLOPT_HTTPHEADER, u->header,
241 LOG_ERR, return -EXFULL);
243 /* enable verbose for easier tracing */
244 easy_setopt(curl, CURLOPT_VERBOSE, 1L, LOG_WARNING, );
246 easy_setopt(curl, CURLOPT_USERAGENT,
247 "systemd-journal-upload " PACKAGE_STRING,
250 if (arg_key || startswith(u->url, "https://")) {
251 easy_setopt(curl, CURLOPT_SSLKEY, arg_key ?: PRIV_KEY_FILE,
252 LOG_ERR, return -EXFULL);
253 easy_setopt(curl, CURLOPT_SSLCERT, arg_cert ?: CERT_FILE,
254 LOG_ERR, return -EXFULL);
257 if (arg_trust || startswith(u->url, "https://"))
258 easy_setopt(curl, CURLOPT_CAINFO, arg_trust ?: TRUST_FILE,
259 LOG_ERR, return -EXFULL);
261 if (arg_key || arg_trust)
262 easy_setopt(curl, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1,
267 /* truncate the potential old error message */
274 /* upload to this place */
275 code = curl_easy_setopt(u->easy, CURLOPT_URL, u->url);
277 log_error("curl_easy_setopt CURLOPT_URL failed: %s",
278 curl_easy_strerror(code));
287 static size_t fd_input_callback(void *buf, size_t size, size_t nmemb, void *userp) {
293 assert(nmemb <= SSIZE_MAX / size);
298 r = read(u->input, buf, size * nmemb);
299 log_debug("%s: allowed %zu, read %zu", __func__, size*nmemb, r);
304 u->uploading = false;
306 log_debug("Reached EOF");
310 log_error("Aborting transfer after read error on input: %m.");
311 return CURL_READFUNC_ABORT;
315 static void close_fd_input(Uploader *u) {
319 close_nointr(u->input);
324 static int dispatch_fd_input(sd_event_source *event,
333 if (revents & EPOLLHUP) {
334 log_debug("Received HUP");
339 if (!(revents & EPOLLIN)) {
340 log_warning("Unexpected poll event %"PRIu32".", revents);
345 log_warning("dispatch_fd_input called when uploading, ignoring.");
349 return start_upload(u, fd_input_callback, u);
352 static int open_file_for_upload(Uploader *u, const char *filename) {
355 if (streq(filename, "-"))
358 fd = open(filename, O_RDONLY|O_CLOEXEC|O_NOCTTY);
360 log_error("Failed to open %s: %m", filename);
368 r = sd_event_add_io(u->events, &u->input_event,
369 fd, EPOLLIN, dispatch_fd_input, u);
371 if (r != -EPERM || arg_follow > 0) {
372 log_error("Failed to register input event: %s", strerror(-r));
376 /* Normal files should just be consumed without polling. */
377 r = start_upload(u, fd_input_callback, u);
384 static int dispatch_sigterm(sd_event_source *event,
385 const struct signalfd_siginfo *si,
387 Uploader *u = userdata;
391 log_received_signal(LOG_INFO, si);
394 close_journal_input(u);
396 sd_event_exit(u->events, 0);
400 static int setup_signals(Uploader *u) {
406 assert_se(sigemptyset(&mask) == 0);
407 sigset_add_many(&mask, SIGINT, SIGTERM, -1);
408 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
410 r = sd_event_add_signal(u->events, &u->sigterm_event, SIGTERM, dispatch_sigterm, u);
414 r = sd_event_add_signal(u->events, &u->sigint_event, SIGINT, dispatch_sigterm, u);
421 static int setup_uploader(Uploader *u, const char *url, const char *state_file) {
423 const char *host, *proto = "";
428 memzero(u, sizeof(Uploader));
431 if (!(host = startswith(url, "http://")) && !(host = startswith(url, "https://"))) {
436 if (strchr(host, ':'))
437 u->url = strjoin(proto, url, "/upload", NULL);
444 while (x > 0 && t[x - 1] == '/')
447 u->url = strjoin(proto, t, ":" STRINGIFY(DEFAULT_PORT), "/upload", NULL);
452 u->state_file = state_file;
454 r = sd_event_default(&u->events);
456 log_error("sd_event_default failed: %s", strerror(-r));
460 r = setup_signals(u);
462 log_error("Failed to set up signals: %s", strerror(-r));
466 return load_cursor_state(u);
469 static void destroy_uploader(Uploader *u) {
472 curl_easy_cleanup(u->easy);
473 curl_slist_free_all(u->header);
476 free(u->last_cursor);
477 free(u->current_cursor);
481 u->input_event = sd_event_source_unref(u->input_event);
484 close_journal_input(u);
486 sd_event_source_unref(u->sigterm_event);
487 sd_event_source_unref(u->sigint_event);
488 sd_event_unref(u->events);
491 static int perform_upload(Uploader *u) {
497 code = curl_easy_perform(u->easy);
500 log_error("Upload to %s failed: %.*s",
501 u->url, (int) sizeof(u->error), u->error);
503 log_error("Upload to %s failed: %s",
504 u->url, curl_easy_strerror(code));
508 code = curl_easy_getinfo(u->easy, CURLINFO_RESPONSE_CODE, &status);
510 log_error("Failed to retrieve response code: %s",
511 curl_easy_strerror(code));
516 log_error("Upload to %s failed with code %lu: %s",
517 u->url, status, strna(u->answer));
519 } else if (status < 200) {
520 log_error("Upload to %s finished with unexpected code %lu: %s",
521 u->url, status, strna(u->answer));
524 log_debug("Upload finished successfully with code %lu: %s",
525 status, strna(u->answer));
527 free(u->last_cursor);
528 u->last_cursor = u->current_cursor;
529 u->current_cursor = NULL;
531 return update_cursor_state(u);
534 static int parse_config(void) {
535 const ConfigTableItem items[] = {
536 { "Upload", "URL", config_parse_string, 0, &arg_url },
537 { "Upload", "ServerKeyFile", config_parse_path, 0, &arg_key },
538 { "Upload", "ServerCertificateFile", config_parse_path, 0, &arg_cert },
539 { "Upload", "TrustedCertificateFile", config_parse_path, 0, &arg_trust },
542 return config_parse(NULL, PKGSYSCONFDIR "/journal-upload.conf", NULL,
544 config_item_table_lookup, items,
545 false, false, true, NULL);
548 static void help(void) {
549 printf("%s -u URL {FILE|-}...\n\n"
550 "Upload journal events to a remote server.\n\n"
551 " -h --help Show this help\n"
552 " --version Show package version\n"
553 " -u --url=URL Upload to this address (default port "
554 STRINGIFY(DEFAULT_PORT) ")\n"
555 " --key=FILENAME Specify key in PEM format (default:\n"
556 " \"" PRIV_KEY_FILE "\")\n"
557 " --cert=FILENAME Specify certificate in PEM format (default:\n"
558 " \"" CERT_FILE "\")\n"
559 " --trust=FILENAME|all Specify CA certificate or disable checking (default:\n"
560 " \"" TRUST_FILE "\")\n"
561 " --system Use the system journal\n"
562 " --user Use the user journal for the current user\n"
563 " -m --merge Use all available journals\n"
564 " -M --machine=CONTAINER Operate on local container\n"
565 " -D --directory=PATH Use journal files from directory\n"
566 " --file=PATH Use this journal file\n"
567 " --cursor=CURSOR Start at the specified cursor\n"
568 " --after-cursor=CURSOR Start after the specified cursor\n"
569 " --follow[=BOOL] Do [not] wait for input\n"
570 " --save-state[=FILE] Save uploaded cursors (default \n"
572 " -h --help Show this help and exit\n"
573 " --version Print version string and exit\n"
574 , program_invocation_short_name);
577 static int parse_argv(int argc, char *argv[]) {
592 static const struct option options[] = {
593 { "help", no_argument, NULL, 'h' },
594 { "version", no_argument, NULL, ARG_VERSION },
595 { "url", required_argument, NULL, 'u' },
596 { "key", required_argument, NULL, ARG_KEY },
597 { "cert", required_argument, NULL, ARG_CERT },
598 { "trust", required_argument, NULL, ARG_TRUST },
599 { "system", no_argument, NULL, ARG_SYSTEM },
600 { "user", no_argument, NULL, ARG_USER },
601 { "merge", no_argument, NULL, 'm' },
602 { "machine", required_argument, NULL, 'M' },
603 { "directory", required_argument, NULL, 'D' },
604 { "file", required_argument, NULL, ARG_FILE },
605 { "cursor", required_argument, NULL, ARG_CURSOR },
606 { "after-cursor", required_argument, NULL, ARG_AFTER_CURSOR },
607 { "follow", optional_argument, NULL, ARG_FOLLOW },
608 { "save-state", optional_argument, NULL, ARG_SAVE_STATE },
619 while ((c = getopt_long(argc, argv, "hu:mM:D:", options, NULL)) >= 0)
626 puts(PACKAGE_STRING);
627 puts(SYSTEMD_FEATURES);
632 log_error("cannot use more than one --url");
641 log_error("cannot use more than one --key");
650 log_error("cannot use more than one --cert");
659 log_error("cannot use more than one --trust");
667 arg_journal_type |= SD_JOURNAL_SYSTEM;
671 arg_journal_type |= SD_JOURNAL_CURRENT_USER;
680 log_error("cannot use more than one --machine/-M");
684 arg_machine = optarg;
689 log_error("cannot use more than one --directory/-D");
693 arg_directory = optarg;
697 r = glob_extend(&arg_file, optarg);
699 log_error("Failed to add paths: %s", strerror(-r));
706 log_error("cannot use more than one --cursor/--after-cursor");
713 case ARG_AFTER_CURSOR:
715 log_error("cannot use more than one --cursor/--after-cursor");
720 arg_after_cursor = true;
725 r = parse_boolean(optarg);
727 log_error("Failed to parse --follow= parameter.");
738 arg_save_state = optarg ?: STATE_FILE;
742 log_error("Unknown option %s.", argv[optind-1]);
746 log_error("Missing argument to %s.", argv[optind-1]);
750 assert_not_reached("Unhandled option code.");
754 log_error("Required --url/-u option missing.");
758 if (!!arg_key != !!arg_cert) {
759 log_error("Options --key and --cert must be used together.");
763 if (optind < argc && (arg_directory || arg_file || arg_machine || arg_journal_type)) {
764 log_error("Input arguments make no sense with journal input.");
771 static int open_journal(sd_journal **j) {
775 r = sd_journal_open_directory(j, arg_directory, arg_journal_type);
777 r = sd_journal_open_files(j, (const char**) arg_file, 0);
778 else if (arg_machine)
779 r = sd_journal_open_container(j, arg_machine, 0);
781 r = sd_journal_open(j, !arg_merge*SD_JOURNAL_LOCAL_ONLY + arg_journal_type);
783 log_error("Failed to open %s: %s",
784 arg_directory ? arg_directory : arg_file ? "files" : "journal",
789 int main(int argc, char **argv) {
794 log_show_color(true);
795 log_parse_environment();
801 r = parse_argv(argc, argv);
805 r = setup_uploader(&u, arg_url, arg_save_state);
809 sd_event_set_watchdog(u.events, true);
811 r = check_cursor_updating(&u);
815 log_debug("%s running as pid "PID_FMT,
816 program_invocation_short_name, getpid());
818 use_journal = optind >= argc;
821 r = open_journal(&j);
824 r = open_journal_for_upload(&u, j,
825 arg_cursor ?: u.last_cursor,
826 arg_cursor ? arg_after_cursor : true,
834 "STATUS=Processing input...");
841 r = check_journal_input(&u);
842 } else if (u.input < 0 && !use_journal) {
846 log_debug("Using %s as input.", argv[optind]);
847 r = open_file_for_upload(&u, argv[optind++]);
852 r = sd_event_get_state(u.events);
855 if (r == SD_EVENT_FINISHED)
859 r = perform_upload(&u);
864 r = sd_event_run(u.events, u.timeout);
866 log_error("Failed to run event loop: %s", strerror(-r));
874 "STATUS=Shutting down...");
876 destroy_uploader(&u);
879 return r == 0 ? EXIT_SUCCESS : EXIT_FAILURE;