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"
34 #include "journal-upload.h"
36 static const char* arg_url;
38 static void close_fd_input(Uploader *u);
40 static const char *arg_key = NULL;
41 static const char *arg_cert = NULL;
42 static const char *arg_trust = NULL;
44 static const char *arg_directory = NULL;
45 static char **arg_file = NULL;
46 static const char *arg_cursor = NULL;
47 static bool arg_after_cursor = false;
48 static int arg_journal_type = 0;
49 static const char *arg_machine = NULL;
50 static bool arg_merge = false;
51 static int arg_follow = -1;
52 static const char *arg_save_state = NULL;
54 #define SERVER_ANSWER_KEEP 2048
56 #define STATE_FILE "/var/lib/systemd/journal-upload/state"
58 #define easy_setopt(curl, opt, value, level, cmd) \
60 code = curl_easy_setopt(curl, opt, value); \
63 "curl_easy_setopt " #opt " failed: %s", \
64 curl_easy_strerror(code)); \
69 static size_t output_callback(char *buf,
77 log_debug("The server answers (%zu bytes): %.*s",
78 size*nmemb, (int)(size*nmemb), buf);
80 if (nmemb && !u->answer) {
81 u->answer = strndup(buf, size*nmemb);
83 log_warning("Failed to store server answer (%zu bytes): %s",
84 size*nmemb, strerror(ENOMEM));
90 static int update_cursor_state(Uploader *u) {
91 _cleanup_free_ char *temp_path = NULL;
92 _cleanup_fclose_ FILE *f = NULL;
95 if (!u->state_file || !u->last_cursor)
98 r = fopen_temporary(u->state_file, &f, &temp_path);
103 "# This is private data. Do not parse.\n"
109 if (ferror(f) || rename(temp_path, u->state_file) < 0) {
111 unlink(u->state_file);
117 log_error("Failed to save state %s: %s", u->state_file, strerror(-r));
122 static int load_cursor_state(Uploader *u) {
128 r = parse_env_file(u->state_file, NEWLINE,
129 "LAST_CURSOR", &u->last_cursor,
132 if (r < 0 && r != -ENOENT) {
133 log_error("Failed to read state file %s: %s",
134 u->state_file, strerror(-r));
143 int start_upload(Uploader *u,
144 size_t (*input_callback)(void *ptr,
152 assert(input_callback);
155 struct curl_slist *h;
157 h = curl_slist_append(NULL, "Content-Type: application/vnd.fdo.journal");
161 h = curl_slist_append(h, "Transfer-Encoding: chunked");
163 curl_slist_free_all(h);
167 h = curl_slist_append(h, "Accept: text/plain");
169 curl_slist_free_all(h);
179 curl = curl_easy_init();
181 log_error("Call to curl_easy_init failed.");
185 /* tell it to POST to the URL */
186 easy_setopt(curl, CURLOPT_POST, 1L,
187 LOG_ERR, return -EXFULL);
189 easy_setopt(curl, CURLOPT_ERRORBUFFER, &u->error,
190 LOG_ERR, return -EXFULL);
192 /* set where to write to */
193 easy_setopt(curl, CURLOPT_WRITEFUNCTION, output_callback,
194 LOG_ERR, return -EXFULL);
196 easy_setopt(curl, CURLOPT_WRITEDATA, data,
197 LOG_ERR, return -EXFULL);
199 /* set where to read from */
200 easy_setopt(curl, CURLOPT_READFUNCTION, input_callback,
201 LOG_ERR, return -EXFULL);
203 easy_setopt(curl, CURLOPT_READDATA, data,
204 LOG_ERR, return -EXFULL);
206 /* use our special own mime type and chunked transfer */
207 easy_setopt(curl, CURLOPT_HTTPHEADER, u->header,
208 LOG_ERR, return -EXFULL);
210 /* enable verbose for easier tracing */
211 easy_setopt(curl, CURLOPT_VERBOSE, 1L, LOG_WARNING, );
213 easy_setopt(curl, CURLOPT_USERAGENT,
214 "systemd-journal-upload " PACKAGE_STRING,
220 easy_setopt(curl, CURLOPT_SSLKEY, arg_key,
221 LOG_ERR, return -EXFULL);
222 easy_setopt(curl, CURLOPT_SSLCERT, arg_cert,
223 LOG_ERR, return -EXFULL);
227 easy_setopt(curl, CURLOPT_CAINFO, arg_trust,
228 LOG_ERR, return -EXFULL);
230 if (arg_key || arg_trust)
231 easy_setopt(curl, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1,
236 /* truncate the potential old error message */
243 /* upload to this place */
244 code = curl_easy_setopt(u->easy, CURLOPT_URL, u->url);
246 log_error("curl_easy_setopt CURLOPT_URL failed: %s",
247 curl_easy_strerror(code));
256 static size_t fd_input_callback(void *buf, size_t size, size_t nmemb, void *userp) {
262 assert(nmemb <= SSIZE_MAX / size);
267 r = read(u->input, buf, size * nmemb);
268 log_debug("%s: allowed %zu, read %zu", __func__, size*nmemb, r);
273 u->uploading = false;
275 log_debug("Reached EOF");
279 log_error("Aborting transfer after read error on input: %m.");
280 return CURL_READFUNC_ABORT;
284 static void close_fd_input(Uploader *u) {
288 close_nointr(u->input);
293 static int dispatch_fd_input(sd_event_source *event,
300 assert(revents & EPOLLIN);
304 log_warning("dispatch_fd_input called when uploading, ignoring.");
308 return start_upload(u, fd_input_callback, u);
311 static int open_file_for_upload(Uploader *u, const char *filename) {
314 if (streq(filename, "-"))
317 fd = open(filename, O_RDONLY|O_CLOEXEC|O_NOCTTY);
319 log_error("Failed to open %s: %m", filename);
327 r = sd_event_add_io(u->events, &u->input_event,
328 fd, EPOLLIN, dispatch_fd_input, u);
330 if (r != -EPERM || arg_follow > 0) {
331 log_error("Failed to register input event: %s", strerror(-r));
335 /* Normal files should just be consumed without polling. */
336 r = start_upload(u, fd_input_callback, u);
343 static int setup_uploader(Uploader *u, const char *url, const char *state_file) {
349 memzero(u, sizeof(Uploader));
353 u->state_file = state_file;
355 r = sd_event_default(&u->events);
357 log_error("sd_event_default failed: %s", strerror(-r));
361 return load_cursor_state(u);
364 static void destroy_uploader(Uploader *u) {
367 curl_easy_cleanup(u->easy);
368 curl_slist_free_all(u->header);
371 free(u->last_cursor);
372 free(u->current_cursor);
374 u->input_event = sd_event_source_unref(u->input_event);
377 close_journal_input(u);
379 sd_event_unref(u->events);
382 static int perform_upload(Uploader *u) {
388 code = curl_easy_perform(u->easy);
390 log_error("Upload to %s failed: %.*s",
392 u->error[0] ? (int) sizeof(u->error) : INT_MAX,
393 u->error[0] ? u->error : curl_easy_strerror(code));
397 code = curl_easy_getinfo(u->easy, CURLINFO_RESPONSE_CODE, &status);
399 log_error("Failed to retrieve response code: %s",
400 curl_easy_strerror(code));
405 log_error("Upload to %s failed with code %lu: %s",
406 u->url, status, strna(u->answer));
408 } else if (status < 200) {
409 log_error("Upload to %s finished with unexpected code %lu: %s",
410 u->url, status, strna(u->answer));
413 log_debug("Upload finished successfully with code %lu: %s",
414 status, strna(u->answer));
416 free(u->last_cursor);
417 u->last_cursor = u->current_cursor;
418 u->current_cursor = NULL;
420 return update_cursor_state(u);
423 static void help(void) {
424 printf("%s -u URL {FILE|-}...\n\n"
425 "Upload journal events to a remote server.\n\n"
427 " --url=URL Upload to this address\n"
428 " --key=FILENAME Specify key in PEM format\n"
429 " --cert=FILENAME Specify certificate in PEM format\n"
430 " --trust=FILENAME Specify CA certificate in PEM format\n"
431 " --system Use the system journal\n"
432 " --user Use the user journal for the current user\n"
433 " -m --merge Use all available journals\n"
434 " -M --machine=CONTAINER Operate on local container\n"
435 " -D --directory=PATH Use journal files from directory\n"
436 " --file=PATH Use this journal file\n"
437 " --cursor=CURSOR Start at the specified cursor\n"
438 " --after-cursor=CURSOR Start after the specified cursor\n"
439 " --[no-]follow Do [not] wait for input\n"
440 " --save-state[=FILE] Save uploaded cursors (default \n"
442 " -h --help Show this help and exit\n"
443 " --version Print version string and exit\n"
444 , program_invocation_short_name);
447 static int parse_argv(int argc, char *argv[]) {
463 static const struct option options[] = {
464 { "help", no_argument, NULL, 'h' },
465 { "version", no_argument, NULL, ARG_VERSION },
466 { "url", required_argument, NULL, 'u' },
467 { "key", required_argument, NULL, ARG_KEY },
468 { "cert", required_argument, NULL, ARG_CERT },
469 { "trust", required_argument, NULL, ARG_TRUST },
470 { "system", no_argument, NULL, ARG_SYSTEM },
471 { "user", no_argument, NULL, ARG_USER },
472 { "merge", no_argument, NULL, 'm' },
473 { "machine", required_argument, NULL, 'M' },
474 { "directory", required_argument, NULL, 'D' },
475 { "file", required_argument, NULL, ARG_FILE },
476 { "cursor", required_argument, NULL, ARG_CURSOR },
477 { "after-cursor", required_argument, NULL, ARG_AFTER_CURSOR },
478 { "follow", no_argument, NULL, ARG_FOLLOW },
479 { "no-follow", no_argument, NULL, ARG_NO_FOLLOW },
480 { "save-state", optional_argument, NULL, ARG_SAVE_STATE },
491 while ((c = getopt_long(argc, argv, "hu:mM:D:", options, NULL)) >= 0)
498 puts(PACKAGE_STRING);
499 puts(SYSTEMD_FEATURES);
504 log_error("cannot use more than one --url");
513 log_error("cannot use more than one --key");
522 log_error("cannot use more than one --cert");
531 log_error("cannot use more than one --trust");
539 arg_journal_type |= SD_JOURNAL_SYSTEM;
543 arg_journal_type |= SD_JOURNAL_CURRENT_USER;
552 log_error("cannot use more than one --machine/-M");
556 arg_machine = optarg;
561 log_error("cannot use more than one --directory/-D");
565 arg_directory = optarg;
569 r = glob_extend(&arg_file, optarg);
571 log_error("Failed to add paths: %s", strerror(-r));
578 log_error("cannot use more than one --cursor/--after-cursor");
585 case ARG_AFTER_CURSOR:
587 log_error("cannot use more than one --cursor/--after-cursor");
592 arg_after_cursor = true;
604 arg_save_state = optarg ?: STATE_FILE;
608 log_error("Unknown option %s.", argv[optind-1]);
612 log_error("Missing argument to %s.", argv[optind-1]);
616 assert_not_reached("Unhandled option code.");
620 log_error("Required --url/-u option missing.");
624 if (!!arg_key != !!arg_cert) {
625 log_error("Options --key and --cert must be used together.");
629 if (optind < argc && (arg_directory || arg_file || arg_machine || arg_journal_type)) {
630 log_error("Input arguments make no sense with journal input.");
637 static int open_journal(sd_journal **j) {
641 r = sd_journal_open_directory(j, arg_directory, arg_journal_type);
643 r = sd_journal_open_files(j, (const char**) arg_file, 0);
644 else if (arg_machine)
645 r = sd_journal_open_container(j, arg_machine, 0);
647 r = sd_journal_open(j, !arg_merge*SD_JOURNAL_LOCAL_ONLY + arg_journal_type);
649 log_error("Failed to open %s: %s",
650 arg_directory ? arg_directory : arg_file ? "files" : "journal",
655 int main(int argc, char **argv) {
660 log_show_color(true);
661 log_parse_environment();
663 r = parse_argv(argc, argv);
667 r = setup_uploader(&u, arg_url, arg_save_state);
671 log_debug("%s running as pid "PID_FMT,
672 program_invocation_short_name, getpid());
674 use_journal = optind >= argc;
677 r = open_journal(&j);
680 r = open_journal_for_upload(&u, j,
681 arg_cursor ?: u.last_cursor,
682 arg_cursor ? arg_after_cursor : true,
690 "STATUS=Processing input...");
697 r = check_journal_input(&u);
698 } else if (u.input < 0 && !use_journal) {
702 log_debug("Using %s as input.", argv[optind]);
703 r = open_file_for_upload(&u, argv[optind++]);
708 r = sd_event_get_state(u.events);
711 if (r == SD_EVENT_FINISHED)
715 r = perform_upload(&u);
720 r = sd_event_run(u.events, u.timeout);
722 log_error("Failed to run event loop: %s", strerror(-r));
728 sd_notify(false, "STATUS=Shutting down...");
729 destroy_uploader(&u);
732 return r == 0 ? EXIT_SUCCESS : EXIT_FAILURE;