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_errno(ENOMEM, "Failed to store server answer (%zu bytes): %m",
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 return log_error_errno(r, "Cannot create parent directory of state file %s: %m",
110 r = fopen_temporary(u->state_file, &f, &temp_path);
112 return log_error_errno(r, "Cannot save state to %s: %m",
119 static int update_cursor_state(Uploader *u) {
120 _cleanup_free_ char *temp_path = NULL;
121 _cleanup_fclose_ FILE *f = NULL;
124 if (!u->state_file || !u->last_cursor)
127 r = fopen_temporary(u->state_file, &f, &temp_path);
132 "# This is private data. Do not parse.\n"
138 if (ferror(f) || rename(temp_path, u->state_file) < 0) {
140 unlink(u->state_file);
146 log_error_errno(r, "Failed to save state %s: %m", u->state_file);
151 static int load_cursor_state(Uploader *u) {
157 r = parse_env_file(u->state_file, NEWLINE,
158 "LAST_CURSOR", &u->last_cursor,
162 log_debug("State file %s is not present.", u->state_file);
164 return log_error_errno(r, "Failed to read state file %s: %m",
167 log_debug("Last cursor was %s", u->last_cursor);
174 int start_upload(Uploader *u,
175 size_t (*input_callback)(void *ptr,
183 assert(input_callback);
186 struct curl_slist *h;
188 h = curl_slist_append(NULL, "Content-Type: application/vnd.fdo.journal");
192 h = curl_slist_append(h, "Transfer-Encoding: chunked");
194 curl_slist_free_all(h);
198 h = curl_slist_append(h, "Accept: text/plain");
200 curl_slist_free_all(h);
210 curl = curl_easy_init();
212 log_error("Call to curl_easy_init failed.");
216 /* tell it to POST to the URL */
217 easy_setopt(curl, CURLOPT_POST, 1L,
218 LOG_ERR, return -EXFULL);
220 easy_setopt(curl, CURLOPT_ERRORBUFFER, u->error,
221 LOG_ERR, return -EXFULL);
223 /* set where to write to */
224 easy_setopt(curl, CURLOPT_WRITEFUNCTION, output_callback,
225 LOG_ERR, return -EXFULL);
227 easy_setopt(curl, CURLOPT_WRITEDATA, data,
228 LOG_ERR, return -EXFULL);
230 /* set where to read from */
231 easy_setopt(curl, CURLOPT_READFUNCTION, input_callback,
232 LOG_ERR, return -EXFULL);
234 easy_setopt(curl, CURLOPT_READDATA, data,
235 LOG_ERR, return -EXFULL);
237 /* use our special own mime type and chunked transfer */
238 easy_setopt(curl, CURLOPT_HTTPHEADER, u->header,
239 LOG_ERR, return -EXFULL);
241 /* enable verbose for easier tracing */
242 easy_setopt(curl, CURLOPT_VERBOSE, 1L, LOG_WARNING, );
244 easy_setopt(curl, CURLOPT_USERAGENT,
245 "systemd-journal-upload " PACKAGE_STRING,
248 if (arg_key || startswith(u->url, "https://")) {
249 easy_setopt(curl, CURLOPT_SSLKEY, arg_key ?: PRIV_KEY_FILE,
250 LOG_ERR, return -EXFULL);
251 easy_setopt(curl, CURLOPT_SSLCERT, arg_cert ?: CERT_FILE,
252 LOG_ERR, return -EXFULL);
255 if (streq_ptr(arg_trust, "all"))
256 easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0,
257 LOG_ERR, return -EUCLEAN);
258 else if (arg_trust || startswith(u->url, "https://"))
259 easy_setopt(curl, CURLOPT_CAINFO, arg_trust ?: TRUST_FILE,
260 LOG_ERR, return -EXFULL);
262 if (arg_key || arg_trust)
263 easy_setopt(curl, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1,
268 /* truncate the potential old error message */
275 /* upload to this place */
276 code = curl_easy_setopt(u->easy, CURLOPT_URL, u->url);
278 log_error("curl_easy_setopt CURLOPT_URL failed: %s",
279 curl_easy_strerror(code));
288 static size_t fd_input_callback(void *buf, size_t size, size_t nmemb, void *userp) {
294 assert(nmemb <= SSIZE_MAX / size);
299 r = read(u->input, buf, size * nmemb);
300 log_debug("%s: allowed %zu, read %zu", __func__, size*nmemb, r);
305 u->uploading = false;
307 log_debug("Reached EOF");
311 log_error("Aborting transfer after read error on input: %m.");
312 return CURL_READFUNC_ABORT;
316 static void close_fd_input(Uploader *u) {
320 close_nointr(u->input);
325 static int dispatch_fd_input(sd_event_source *event,
334 if (revents & EPOLLHUP) {
335 log_debug("Received HUP");
340 if (!(revents & EPOLLIN)) {
341 log_warning("Unexpected poll event %"PRIu32".", revents);
346 log_warning("dispatch_fd_input called when uploading, ignoring.");
350 return start_upload(u, fd_input_callback, u);
353 static int open_file_for_upload(Uploader *u, const char *filename) {
356 if (streq(filename, "-"))
359 fd = open(filename, O_RDONLY|O_CLOEXEC|O_NOCTTY);
361 log_error("Failed to open %s: %m", filename);
369 r = sd_event_add_io(u->events, &u->input_event,
370 fd, EPOLLIN, dispatch_fd_input, u);
372 if (r != -EPERM || arg_follow > 0)
373 return log_error_errno(r, "Failed to register input event: %m");
375 /* Normal files should just be consumed without polling. */
376 r = start_upload(u, fd_input_callback, u);
383 static int dispatch_sigterm(sd_event_source *event,
384 const struct signalfd_siginfo *si,
386 Uploader *u = userdata;
390 log_received_signal(LOG_INFO, si);
393 close_journal_input(u);
395 sd_event_exit(u->events, 0);
399 static int setup_signals(Uploader *u) {
405 assert_se(sigemptyset(&mask) == 0);
406 sigset_add_many(&mask, SIGINT, SIGTERM, -1);
407 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
409 r = sd_event_add_signal(u->events, &u->sigterm_event, SIGTERM, dispatch_sigterm, u);
413 r = sd_event_add_signal(u->events, &u->sigint_event, SIGINT, dispatch_sigterm, u);
420 static int setup_uploader(Uploader *u, const char *url, const char *state_file) {
422 const char *host, *proto = "";
427 memzero(u, sizeof(Uploader));
430 if (!(host = startswith(url, "http://")) && !(host = startswith(url, "https://"))) {
435 if (strchr(host, ':'))
436 u->url = strjoin(proto, url, "/upload", NULL);
443 while (x > 0 && t[x - 1] == '/')
446 u->url = strjoin(proto, t, ":" STRINGIFY(DEFAULT_PORT), "/upload", NULL);
451 u->state_file = state_file;
453 r = sd_event_default(&u->events);
455 return log_error_errno(r, "sd_event_default failed: %m");
457 r = setup_signals(u);
459 return log_error_errno(r, "Failed to set up signals: %m");
461 return load_cursor_state(u);
464 static void destroy_uploader(Uploader *u) {
467 curl_easy_cleanup(u->easy);
468 curl_slist_free_all(u->header);
471 free(u->last_cursor);
472 free(u->current_cursor);
476 u->input_event = sd_event_source_unref(u->input_event);
479 close_journal_input(u);
481 sd_event_source_unref(u->sigterm_event);
482 sd_event_source_unref(u->sigint_event);
483 sd_event_unref(u->events);
486 static int perform_upload(Uploader *u) {
492 code = curl_easy_perform(u->easy);
495 log_error("Upload to %s failed: %.*s",
496 u->url, (int) sizeof(u->error), u->error);
498 log_error("Upload to %s failed: %s",
499 u->url, curl_easy_strerror(code));
503 code = curl_easy_getinfo(u->easy, CURLINFO_RESPONSE_CODE, &status);
505 log_error("Failed to retrieve response code: %s",
506 curl_easy_strerror(code));
511 log_error("Upload to %s failed with code %lu: %s",
512 u->url, status, strna(u->answer));
514 } else if (status < 200) {
515 log_error("Upload to %s finished with unexpected code %lu: %s",
516 u->url, status, strna(u->answer));
519 log_debug("Upload finished successfully with code %lu: %s",
520 status, strna(u->answer));
522 free(u->last_cursor);
523 u->last_cursor = u->current_cursor;
524 u->current_cursor = NULL;
526 return update_cursor_state(u);
529 static int parse_config(void) {
530 const ConfigTableItem items[] = {
531 { "Upload", "URL", config_parse_string, 0, &arg_url },
532 { "Upload", "ServerKeyFile", config_parse_path, 0, &arg_key },
533 { "Upload", "ServerCertificateFile", config_parse_path, 0, &arg_cert },
534 { "Upload", "TrustedCertificateFile", config_parse_path, 0, &arg_trust },
537 return config_parse(NULL, PKGSYSCONFDIR "/journal-upload.conf", NULL,
539 config_item_table_lookup, items,
540 false, false, true, NULL);
543 static void help(void) {
544 printf("%s -u URL {FILE|-}...\n\n"
545 "Upload journal events to a remote server.\n\n"
546 " -h --help Show this help\n"
547 " --version Show package version\n"
548 " -u --url=URL Upload to this address (default port "
549 STRINGIFY(DEFAULT_PORT) ")\n"
550 " --key=FILENAME Specify key in PEM format (default:\n"
551 " \"" PRIV_KEY_FILE "\")\n"
552 " --cert=FILENAME Specify certificate in PEM format (default:\n"
553 " \"" CERT_FILE "\")\n"
554 " --trust=FILENAME|all Specify CA certificate or disable checking (default:\n"
555 " \"" TRUST_FILE "\")\n"
556 " --system Use the system journal\n"
557 " --user Use the user journal for the current user\n"
558 " -m --merge Use all available journals\n"
559 " -M --machine=CONTAINER Operate on local container\n"
560 " -D --directory=PATH Use journal files from directory\n"
561 " --file=PATH Use this journal file\n"
562 " --cursor=CURSOR Start at the specified cursor\n"
563 " --after-cursor=CURSOR Start after the specified cursor\n"
564 " --follow[=BOOL] Do [not] wait for input\n"
565 " --save-state[=FILE] Save uploaded cursors (default \n"
567 " -h --help Show this help and exit\n"
568 " --version Print version string and exit\n"
569 , program_invocation_short_name);
572 static int parse_argv(int argc, char *argv[]) {
587 static const struct option options[] = {
588 { "help", no_argument, NULL, 'h' },
589 { "version", no_argument, NULL, ARG_VERSION },
590 { "url", required_argument, NULL, 'u' },
591 { "key", required_argument, NULL, ARG_KEY },
592 { "cert", required_argument, NULL, ARG_CERT },
593 { "trust", required_argument, NULL, ARG_TRUST },
594 { "system", no_argument, NULL, ARG_SYSTEM },
595 { "user", no_argument, NULL, ARG_USER },
596 { "merge", no_argument, NULL, 'm' },
597 { "machine", required_argument, NULL, 'M' },
598 { "directory", required_argument, NULL, 'D' },
599 { "file", required_argument, NULL, ARG_FILE },
600 { "cursor", required_argument, NULL, ARG_CURSOR },
601 { "after-cursor", required_argument, NULL, ARG_AFTER_CURSOR },
602 { "follow", optional_argument, NULL, ARG_FOLLOW },
603 { "save-state", optional_argument, NULL, ARG_SAVE_STATE },
614 while ((c = getopt_long(argc, argv, "hu:mM:D:", options, NULL)) >= 0)
621 puts(PACKAGE_STRING);
622 puts(SYSTEMD_FEATURES);
627 log_error("cannot use more than one --url");
636 log_error("cannot use more than one --key");
645 log_error("cannot use more than one --cert");
654 log_error("cannot use more than one --trust");
662 arg_journal_type |= SD_JOURNAL_SYSTEM;
666 arg_journal_type |= SD_JOURNAL_CURRENT_USER;
675 log_error("cannot use more than one --machine/-M");
679 arg_machine = optarg;
684 log_error("cannot use more than one --directory/-D");
688 arg_directory = optarg;
692 r = glob_extend(&arg_file, optarg);
694 return log_error_errno(r, "Failed to add paths: %m");
699 log_error("cannot use more than one --cursor/--after-cursor");
706 case ARG_AFTER_CURSOR:
708 log_error("cannot use more than one --cursor/--after-cursor");
713 arg_after_cursor = true;
718 r = parse_boolean(optarg);
720 log_error("Failed to parse --follow= parameter.");
731 arg_save_state = optarg ?: STATE_FILE;
735 log_error("Unknown option %s.", argv[optind-1]);
739 log_error("Missing argument to %s.", argv[optind-1]);
743 assert_not_reached("Unhandled option code.");
747 log_error("Required --url/-u option missing.");
751 if (!!arg_key != !!arg_cert) {
752 log_error("Options --key and --cert must be used together.");
756 if (optind < argc && (arg_directory || arg_file || arg_machine || arg_journal_type)) {
757 log_error("Input arguments make no sense with journal input.");
764 static int open_journal(sd_journal **j) {
768 r = sd_journal_open_directory(j, arg_directory, arg_journal_type);
770 r = sd_journal_open_files(j, (const char**) arg_file, 0);
771 else if (arg_machine)
772 r = sd_journal_open_container(j, arg_machine, 0);
774 r = sd_journal_open(j, !arg_merge*SD_JOURNAL_LOCAL_ONLY + arg_journal_type);
776 log_error_errno(r, "Failed to open %s: %m",
777 arg_directory ? arg_directory : arg_file ? "files" : "journal");
781 int main(int argc, char **argv) {
786 log_show_color(true);
787 log_parse_environment();
793 r = parse_argv(argc, argv);
797 r = setup_uploader(&u, arg_url, arg_save_state);
801 sd_event_set_watchdog(u.events, true);
803 r = check_cursor_updating(&u);
807 log_debug("%s running as pid "PID_FMT,
808 program_invocation_short_name, getpid());
810 use_journal = optind >= argc;
813 r = open_journal(&j);
816 r = open_journal_for_upload(&u, j,
817 arg_cursor ?: u.last_cursor,
818 arg_cursor ? arg_after_cursor : true,
826 "STATUS=Processing input...");
829 r = sd_event_get_state(u.events);
832 if (r == SD_EVENT_FINISHED)
839 r = check_journal_input(&u);
840 } else if (u.input < 0 && !use_journal) {
844 log_debug("Using %s as input.", argv[optind]);
845 r = open_file_for_upload(&u, argv[optind++]);
851 r = perform_upload(&u);
856 r = sd_event_run(u.events, u.timeout);
858 log_error_errno(r, "Failed to run event loop: %m");
866 "STATUS=Shutting down...");
868 destroy_uploader(&u);
871 return r >= 0 ? EXIT_SUCCESS : EXIT_FAILURE;