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_errno(errno
, "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 return log_error_errno(errno
, "Failed to open %s: %m", filename
);
367 r
= sd_event_add_io(u
->events
, &u
->input_event
,
368 fd
, EPOLLIN
, dispatch_fd_input
, u
);
370 if (r
!= -EPERM
|| arg_follow
> 0)
371 return log_error_errno(r
, "Failed to register input event: %m");
373 /* Normal files should just be consumed without polling. */
374 r
= start_upload(u
, fd_input_callback
, u
);
381 static int dispatch_sigterm(sd_event_source
*event
,
382 const struct signalfd_siginfo
*si
,
384 Uploader
*u
= userdata
;
388 log_received_signal(LOG_INFO
, si
);
391 close_journal_input(u
);
393 sd_event_exit(u
->events
, 0);
397 static int setup_signals(Uploader
*u
) {
403 assert_se(sigemptyset(&mask
) == 0);
404 sigset_add_many(&mask
, SIGINT
, SIGTERM
, -1);
405 assert_se(sigprocmask(SIG_SETMASK
, &mask
, NULL
) == 0);
407 r
= sd_event_add_signal(u
->events
, &u
->sigterm_event
, SIGTERM
, dispatch_sigterm
, u
);
411 r
= sd_event_add_signal(u
->events
, &u
->sigint_event
, SIGINT
, dispatch_sigterm
, u
);
418 static int setup_uploader(Uploader
*u
, const char *url
, const char *state_file
) {
420 const char *host
, *proto
= "";
425 memzero(u
, sizeof(Uploader
));
428 if (!(host
= startswith(url
, "http://")) && !(host
= startswith(url
, "https://"))) {
433 if (strchr(host
, ':'))
434 u
->url
= strjoin(proto
, url
, "/upload", NULL
);
441 while (x
> 0 && t
[x
- 1] == '/')
444 u
->url
= strjoin(proto
, t
, ":" STRINGIFY(DEFAULT_PORT
), "/upload", NULL
);
449 u
->state_file
= state_file
;
451 r
= sd_event_default(&u
->events
);
453 return log_error_errno(r
, "sd_event_default failed: %m");
455 r
= setup_signals(u
);
457 return log_error_errno(r
, "Failed to set up signals: %m");
459 return load_cursor_state(u
);
462 static void destroy_uploader(Uploader
*u
) {
465 curl_easy_cleanup(u
->easy
);
466 curl_slist_free_all(u
->header
);
469 free(u
->last_cursor
);
470 free(u
->current_cursor
);
474 u
->input_event
= sd_event_source_unref(u
->input_event
);
477 close_journal_input(u
);
479 sd_event_source_unref(u
->sigterm_event
);
480 sd_event_source_unref(u
->sigint_event
);
481 sd_event_unref(u
->events
);
484 static int perform_upload(Uploader
*u
) {
490 code
= curl_easy_perform(u
->easy
);
493 log_error("Upload to %s failed: %.*s",
494 u
->url
, (int) sizeof(u
->error
), u
->error
);
496 log_error("Upload to %s failed: %s",
497 u
->url
, curl_easy_strerror(code
));
501 code
= curl_easy_getinfo(u
->easy
, CURLINFO_RESPONSE_CODE
, &status
);
503 log_error("Failed to retrieve response code: %s",
504 curl_easy_strerror(code
));
509 log_error("Upload to %s failed with code %lu: %s",
510 u
->url
, status
, strna(u
->answer
));
512 } else if (status
< 200) {
513 log_error("Upload to %s finished with unexpected code %lu: %s",
514 u
->url
, status
, strna(u
->answer
));
517 log_debug("Upload finished successfully with code %lu: %s",
518 status
, strna(u
->answer
));
520 free(u
->last_cursor
);
521 u
->last_cursor
= u
->current_cursor
;
522 u
->current_cursor
= NULL
;
524 return update_cursor_state(u
);
527 static int parse_config(void) {
528 const ConfigTableItem items
[] = {
529 { "Upload", "URL", config_parse_string
, 0, &arg_url
},
530 { "Upload", "ServerKeyFile", config_parse_path
, 0, &arg_key
},
531 { "Upload", "ServerCertificateFile", config_parse_path
, 0, &arg_cert
},
532 { "Upload", "TrustedCertificateFile", config_parse_path
, 0, &arg_trust
},
535 return config_parse(NULL
, PKGSYSCONFDIR
"/journal-upload.conf", NULL
,
537 config_item_table_lookup
, items
,
538 false, false, true, NULL
);
541 static void help(void) {
542 printf("%s -u URL {FILE|-}...\n\n"
543 "Upload journal events to a remote server.\n\n"
544 " -h --help Show this help\n"
545 " --version Show package version\n"
546 " -u --url=URL Upload to this address (default port "
547 STRINGIFY(DEFAULT_PORT
) ")\n"
548 " --key=FILENAME Specify key in PEM format (default:\n"
549 " \"" PRIV_KEY_FILE
"\")\n"
550 " --cert=FILENAME Specify certificate in PEM format (default:\n"
551 " \"" CERT_FILE
"\")\n"
552 " --trust=FILENAME|all Specify CA certificate or disable checking (default:\n"
553 " \"" TRUST_FILE
"\")\n"
554 " --system Use the system journal\n"
555 " --user Use the user journal for the current user\n"
556 " -m --merge Use all available journals\n"
557 " -M --machine=CONTAINER Operate on local container\n"
558 " -D --directory=PATH Use journal files from directory\n"
559 " --file=PATH Use this journal file\n"
560 " --cursor=CURSOR Start at the specified cursor\n"
561 " --after-cursor=CURSOR Start after the specified cursor\n"
562 " --follow[=BOOL] Do [not] wait for input\n"
563 " --save-state[=FILE] Save uploaded cursors (default \n"
565 " -h --help Show this help and exit\n"
566 " --version Print version string and exit\n"
567 , program_invocation_short_name
);
570 static int parse_argv(int argc
, char *argv
[]) {
585 static const struct option options
[] = {
586 { "help", no_argument
, NULL
, 'h' },
587 { "version", no_argument
, NULL
, ARG_VERSION
},
588 { "url", required_argument
, NULL
, 'u' },
589 { "key", required_argument
, NULL
, ARG_KEY
},
590 { "cert", required_argument
, NULL
, ARG_CERT
},
591 { "trust", required_argument
, NULL
, ARG_TRUST
},
592 { "system", no_argument
, NULL
, ARG_SYSTEM
},
593 { "user", no_argument
, NULL
, ARG_USER
},
594 { "merge", no_argument
, NULL
, 'm' },
595 { "machine", required_argument
, NULL
, 'M' },
596 { "directory", required_argument
, NULL
, 'D' },
597 { "file", required_argument
, NULL
, ARG_FILE
},
598 { "cursor", required_argument
, NULL
, ARG_CURSOR
},
599 { "after-cursor", required_argument
, NULL
, ARG_AFTER_CURSOR
},
600 { "follow", optional_argument
, NULL
, ARG_FOLLOW
},
601 { "save-state", optional_argument
, NULL
, ARG_SAVE_STATE
},
612 while ((c
= getopt_long(argc
, argv
, "hu:mM:D:", options
, NULL
)) >= 0)
619 puts(PACKAGE_STRING
);
620 puts(SYSTEMD_FEATURES
);
625 log_error("cannot use more than one --url");
634 log_error("cannot use more than one --key");
643 log_error("cannot use more than one --cert");
652 log_error("cannot use more than one --trust");
660 arg_journal_type
|= SD_JOURNAL_SYSTEM
;
664 arg_journal_type
|= SD_JOURNAL_CURRENT_USER
;
673 log_error("cannot use more than one --machine/-M");
677 arg_machine
= optarg
;
682 log_error("cannot use more than one --directory/-D");
686 arg_directory
= optarg
;
690 r
= glob_extend(&arg_file
, optarg
);
692 return log_error_errno(r
, "Failed to add paths: %m");
697 log_error("cannot use more than one --cursor/--after-cursor");
704 case ARG_AFTER_CURSOR
:
706 log_error("cannot use more than one --cursor/--after-cursor");
711 arg_after_cursor
= true;
716 r
= parse_boolean(optarg
);
718 log_error("Failed to parse --follow= parameter.");
729 arg_save_state
= optarg
?: STATE_FILE
;
733 log_error("Unknown option %s.", argv
[optind
-1]);
737 log_error("Missing argument to %s.", argv
[optind
-1]);
741 assert_not_reached("Unhandled option code.");
745 log_error("Required --url/-u option missing.");
749 if (!!arg_key
!= !!arg_cert
) {
750 log_error("Options --key and --cert must be used together.");
754 if (optind
< argc
&& (arg_directory
|| arg_file
|| arg_machine
|| arg_journal_type
)) {
755 log_error("Input arguments make no sense with journal input.");
762 static int open_journal(sd_journal
**j
) {
766 r
= sd_journal_open_directory(j
, arg_directory
, arg_journal_type
);
768 r
= sd_journal_open_files(j
, (const char**) arg_file
, 0);
769 else if (arg_machine
)
770 r
= sd_journal_open_container(j
, arg_machine
, 0);
772 r
= sd_journal_open(j
, !arg_merge
*SD_JOURNAL_LOCAL_ONLY
+ arg_journal_type
);
774 log_error_errno(r
, "Failed to open %s: %m",
775 arg_directory
? arg_directory
: arg_file
? "files" : "journal");
779 int main(int argc
, char **argv
) {
784 log_show_color(true);
785 log_parse_environment();
791 r
= parse_argv(argc
, argv
);
795 r
= setup_uploader(&u
, arg_url
, arg_save_state
);
799 sd_event_set_watchdog(u
.events
, true);
801 r
= check_cursor_updating(&u
);
805 log_debug("%s running as pid "PID_FMT
,
806 program_invocation_short_name
, getpid());
808 use_journal
= optind
>= argc
;
811 r
= open_journal(&j
);
814 r
= open_journal_for_upload(&u
, j
,
815 arg_cursor
?: u
.last_cursor
,
816 arg_cursor
? arg_after_cursor
: true,
824 "STATUS=Processing input...");
827 r
= sd_event_get_state(u
.events
);
830 if (r
== SD_EVENT_FINISHED
)
837 r
= check_journal_input(&u
);
838 } else if (u
.input
< 0 && !use_journal
) {
842 log_debug("Using %s as input.", argv
[optind
]);
843 r
= open_file_for_upload(&u
, argv
[optind
++]);
849 r
= perform_upload(&u
);
854 r
= sd_event_run(u
.events
, u
.timeout
);
856 log_error_errno(r
, "Failed to run event loop: %m");
864 "STATUS=Shutting down...");
866 destroy_uploader(&u
);
869 return r
>= 0 ? EXIT_SUCCESS
: EXIT_FAILURE
;