src/journal-remote/journal-upload.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <curl/curl.h>
   4 #include <fcntl.h>
   5 #include <getopt.h>
   6 #include <stdio.h>
   7 #include <sys/stat.h>
   8 #include <unistd.h>
   9
  10 #include "sd-daemon.h"
  11
  12 #include "alloc-util.h"
  13 #include "conf-parser.h"
  14 #include "daemon-util.h"
  15 #include "def.h"
  16 #include "env-file.h"
  17 #include "fd-util.h"
  18 #include "fileio.h"
  19 #include "format-util.h"
  20 #include "glob-util.h"
  21 #include "journal-upload.h"
  22 #include "log.h"
  23 #include "main-func.h"
  24 #include "mkdir.h"
  25 #include "parse-argument.h"
  26 #include "parse-util.h"
  27 #include "path-util.h"
  28 #include "pretty-print.h"
  29 #include "process-util.h"
  30 #include "rlimit-util.h"
  31 #include "sigbus.h"
  32 #include "signal-util.h"
  33 #include "string-util.h"
  34 #include "strv.h"
  35 #include "tmpfile-util.h"
  36 #include "util.h"
  37 #include "version.h"
  38
  39 #define PRIV_KEY_FILE CERTIFICATE_ROOT "/private/journal-upload.pem"
  40 #define CERT_FILE     CERTIFICATE_ROOT "/certs/journal-upload.pem"
  41 #define TRUST_FILE    CERTIFICATE_ROOT "/ca/trusted.pem"
  42 #define DEFAULT_PORT  19532
  43
  44 static const char* arg_url = NULL;
  45 static const char *arg_key = NULL;
  46 static const char *arg_cert = NULL;
  47 static const char *arg_trust = NULL;
  48 static const char *arg_directory = NULL;
  49 static char **arg_file = NULL;
  50 static const char *arg_cursor = NULL;
  51 static bool arg_after_cursor = false;
  52 static int arg_journal_type = 0;
  53 static const char *arg_machine = NULL;
  54 static bool arg_merge = false;
  55 static int arg_follow = -1;
  56 static const char *arg_save_state = NULL;
  57 static usec_t arg_network_timeout_usec = USEC_INFINITY;
  58
  59 static void close_fd_input(Uploader *u);
  60
  61 #define SERVER_ANSWER_KEEP 2048
  62
  63 #define STATE_FILE "/var/lib/systemd/journal-upload/state"
  64
  65 #define easy_setopt(curl, opt, value, level, cmd)                       \
  66         do {                                                            \
  67                 code = curl_easy_setopt(curl, opt, value);              \
  68                 if (code) {                                             \
  69                         log_full(level,                                 \
  70                                  "curl_easy_setopt " #opt " failed: %s", \
  71                                   curl_easy_strerror(code));            \
  72                         cmd;                                            \
  73                 }                                                       \
  74         } while (0)
  75
  76 DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(CURL*, curl_easy_cleanup, NULL);
  77 DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(struct curl_slist*, curl_slist_free_all, NULL);
  78
  79 static size_t output_callback(char *buf,
  80                               size_t size,
  81                               size_t nmemb,
  82                               void *userp) {
  83         Uploader *u = userp;
  84
  85         assert(u);
  86
  87         log_debug("The server answers (%zu bytes): %.*s",
  88                   size*nmemb, (int)(size*nmemb), buf);
  89
  90         if (nmemb && !u->answer) {
  91                 u->answer = strndup(buf, size*nmemb);
  92                 if (!u->answer)
  93                         log_warning("Failed to store server answer (%zu bytes): out of memory", size*nmemb);
  94         }
  95
  96         return size * nmemb;
  97 }
  98
  99 static int check_cursor_updating(Uploader *u) {
 100         _cleanup_free_ char *temp_path = NULL;
 101         _cleanup_fclose_ FILE *f = NULL;
 102         int r;
 103
 104         if (!u->state_file)
 105                 return 0;
 106
 107         r = mkdir_parents(u->state_file, 0755);
 108         if (r < 0)
 109                 return log_error_errno(r, "Cannot create parent directory of state file %s: %m",
 110                                        u->state_file);
 111
 112         r = fopen_temporary(u->state_file, &f, &temp_path);
 113         if (r < 0)
 114                 return log_error_errno(r, "Cannot save state to %s: %m",
 115                                        u->state_file);
 116         (void) unlink(temp_path);
 117
 118         return 0;
 119 }
 120
 121 static int update_cursor_state(Uploader *u) {
 122         _cleanup_free_ char *temp_path = NULL;
 123         _cleanup_fclose_ FILE *f = NULL;
 124         int r;
 125
 126         if (!u->state_file || !u->last_cursor)
 127                 return 0;
 128
 129         r = fopen_temporary(u->state_file, &f, &temp_path);
 130         if (r < 0)
 131                 goto fail;
 132
 133         fprintf(f,
 134                 "# This is private data. Do not parse.\n"
 135                 "LAST_CURSOR=%s\n",
 136                 u->last_cursor);
 137
 138         r = fflush_and_check(f);
 139         if (r < 0)
 140                 goto fail;
 141
 142         if (rename(temp_path, u->state_file) < 0) {
 143                 r = -errno;
 144                 goto fail;
 145         }
 146
 147         return 0;
 148
 149 fail:
 150         if (temp_path)
 151                 (void) unlink(temp_path);
 152
 153         (void) unlink(u->state_file);
 154
 155         return log_error_errno(r, "Failed to save state %s: %m", u->state_file);
 156 }
 157
 158 static int load_cursor_state(Uploader *u) {
 159         int r;
 160
 161         if (!u->state_file)
 162                 return 0;
 163
 164         r = parse_env_file(NULL, u->state_file, "LAST_CURSOR", &u->last_cursor);
 165         if (r == -ENOENT)
 166                 log_debug("State file %s is not present.", u->state_file);
 167         else if (r < 0)
 168                 return log_error_errno(r, "Failed to read state file %s: %m",
 169                                        u->state_file);
 170         else
 171                 log_debug("Last cursor was %s", u->last_cursor);
 172
 173         return 0;
 174 }
 175
 176 int start_upload(Uploader *u,
 177                  size_t (*input_callback)(void *ptr,
 178                                           size_t size,
 179                                           size_t nmemb,
 180                                           void *userdata),
 181                  void *data) {
 182         CURLcode code;
 183
 184         assert(u);
 185         assert(input_callback);
 186
 187         if (!u->header) {
 188                 _cleanup_(curl_slist_free_allp) struct curl_slist *h = NULL;
 189                 struct curl_slist *l;
 190
 191                 h = curl_slist_append(NULL, "Content-Type: application/vnd.fdo.journal");
 192                 if (!h)
 193                         return log_oom();
 194
 195                 l = curl_slist_append(h, "Transfer-Encoding: chunked");
 196                 if (!l)
 197                         return log_oom();
 198                 h = l;
 199
 200                 l = curl_slist_append(h, "Accept: text/plain");
 201                 if (!l)
 202                         return log_oom();
 203                 h = l;
 204
 205                 u->header = TAKE_PTR(h);
 206         }
 207
 208         if (!u->easy) {
 209                 _cleanup_(curl_easy_cleanupp) CURL *curl = NULL;
 210
 211                 curl = curl_easy_init();
 212                 if (!curl)
 213                         return log_error_errno(SYNTHETIC_ERRNO(ENOSR),
 214                                                "Call to curl_easy_init failed.");
 215
 216                 /* If configured, set a timeout for the curl operation. */
 217                 if (arg_network_timeout_usec != USEC_INFINITY)
 218                         easy_setopt(curl, CURLOPT_TIMEOUT,
 219                                     (long) DIV_ROUND_UP(arg_network_timeout_usec, USEC_PER_SEC),
 220                                     LOG_ERR, return -EXFULL);
 221
 222                 /* tell it to POST to the URL */
 223                 easy_setopt(curl, CURLOPT_POST, 1L,
 224                             LOG_ERR, return -EXFULL);
 225
 226                 easy_setopt(curl, CURLOPT_ERRORBUFFER, u->error,
 227                             LOG_ERR, return -EXFULL);
 228
 229                 /* set where to write to */
 230                 easy_setopt(curl, CURLOPT_WRITEFUNCTION, output_callback,
 231                             LOG_ERR, return -EXFULL);
 232
 233                 easy_setopt(curl, CURLOPT_WRITEDATA, data,
 234                             LOG_ERR, return -EXFULL);
 235
 236                 /* set where to read from */
 237                 easy_setopt(curl, CURLOPT_READFUNCTION, input_callback,
 238                             LOG_ERR, return -EXFULL);
 239
 240                 easy_setopt(curl, CURLOPT_READDATA, data,
 241                             LOG_ERR, return -EXFULL);
 242
 243                 /* use our special own mime type and chunked transfer */
 244                 easy_setopt(curl, CURLOPT_HTTPHEADER, u->header,
 245                             LOG_ERR, return -EXFULL);
 246
 247                 if (DEBUG_LOGGING)
 248                         /* enable verbose for easier tracing */
 249                         easy_setopt(curl, CURLOPT_VERBOSE, 1L, LOG_WARNING, );
 250
 251                 easy_setopt(curl, CURLOPT_USERAGENT,
 252                             "systemd-journal-upload " GIT_VERSION,
 253                             LOG_WARNING, );
 254
 255                 if (!streq_ptr(arg_key, "-") && (arg_key || startswith(u->url, "https://"))) {
 256                         easy_setopt(curl, CURLOPT_SSLKEY, arg_key ?: PRIV_KEY_FILE,
 257                                     LOG_ERR, return -EXFULL);
 258                         easy_setopt(curl, CURLOPT_SSLCERT, arg_cert ?: CERT_FILE,
 259                                     LOG_ERR, return -EXFULL);
 260                 }
 261
 262                 if (STRPTR_IN_SET(arg_trust, "-", "all"))
 263                         easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0,
 264                                     LOG_ERR, return -EUCLEAN);
 265                 else if (arg_trust || startswith(u->url, "https://"))
 266                         easy_setopt(curl, CURLOPT_CAINFO, arg_trust ?: TRUST_FILE,
 267                                     LOG_ERR, return -EXFULL);
 268
 269                 if (arg_key || arg_trust)
 270                         easy_setopt(curl, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1,
 271                                     LOG_WARNING, );
 272
 273                 u->easy = TAKE_PTR(curl);
 274         } else {
 275                 /* truncate the potential old error message */
 276                 u->error[0] = '\0';
 277
 278                 free(u->answer);
 279                 u->answer = 0;
 280         }
 281
 282         /* upload to this place */
 283         code = curl_easy_setopt(u->easy, CURLOPT_URL, u->url);
 284         if (code)
 285                 return log_error_errno(SYNTHETIC_ERRNO(EXFULL),
 286                                        "curl_easy_setopt CURLOPT_URL failed: %s",
 287                                        curl_easy_strerror(code));
 288
 289         u->uploading = true;
 290
 291         return 0;
 292 }
 293
 294 static size_t fd_input_callback(void *buf, size_t size, size_t nmemb, void *userp) {
 295         Uploader *u = userp;
 296         ssize_t n;
 297
 298         assert(u);
 299         assert(nmemb < SSIZE_MAX / size);
 300
 301         if (u->input < 0)
 302                 return 0;
 303
 304         assert(!size_multiply_overflow(size, nmemb));
 305
 306         n = read(u->input, buf, size * nmemb);
 307         log_debug("%s: allowed %zu, read %zd", __func__, size*nmemb, n);
 308         if (n > 0)
 309                 return n;
 310
 311         u->uploading = false;
 312         if (n < 0) {
 313                 log_error_errno(errno, "Aborting transfer after read error on input: %m.");
 314                 return CURL_READFUNC_ABORT;
 315         }
 316
 317         log_debug("Reached EOF");
 318         close_fd_input(u);
 319         return 0;
 320 }
 321
 322 static void close_fd_input(Uploader *u) {
 323         assert(u);
 324
 325         u->input = safe_close(u->input);
 326         u->timeout = 0;
 327 }
 328
 329 static int dispatch_fd_input(sd_event_source *event,
 330                              int fd,
 331                              uint32_t revents,
 332                              void *userp) {
 333         Uploader *u = userp;
 334
 335         assert(u);
 336         assert(fd >= 0);
 337
 338         if (revents & EPOLLHUP) {
 339                 log_debug("Received HUP");
 340                 close_fd_input(u);
 341                 return 0;
 342         }
 343
 344         if (!(revents & EPOLLIN)) {
 345                 log_warning("Unexpected poll event %"PRIu32".", revents);
 346                 return -EINVAL;
 347         }
 348
 349         if (u->uploading) {
 350                 log_warning("dispatch_fd_input called when uploading, ignoring.");
 351                 return 0;
 352         }
 353
 354         return start_upload(u, fd_input_callback, u);
 355 }
 356
 357 static int open_file_for_upload(Uploader *u, const char *filename) {
 358         int fd, r = 0;
 359
 360         if (streq(filename, "-"))
 361                 fd = STDIN_FILENO;
 362         else {
 363                 fd = open(filename, O_RDONLY|O_CLOEXEC|O_NOCTTY);
 364                 if (fd < 0)
 365                         return log_error_errno(errno, "Failed to open %s: %m", filename);
 366         }
 367
 368         u->input = fd;
 369
 370         if (arg_follow != 0) {
 371                 r = sd_event_add_io(u->events, &u->input_event,
 372                                     fd, EPOLLIN, dispatch_fd_input, u);
 373                 if (r < 0) {
 374                         if (r != -EPERM || arg_follow > 0)
 375                                 return log_error_errno(r, "Failed to register input event: %m");
 376
 377                         /* Normal files should just be consumed without polling. */
 378                         r = start_upload(u, fd_input_callback, u);
 379                 }
 380         }
 381
 382         return r;
 383 }
 384
 385 static int dispatch_sigterm(sd_event_source *event,
 386                             const struct signalfd_siginfo *si,
 387                             void *userdata) {
 388         Uploader *u = userdata;
 389
 390         assert(u);
 391
 392         log_received_signal(LOG_INFO, si);
 393
 394         close_fd_input(u);
 395         close_journal_input(u);
 396
 397         sd_event_exit(u->events, 0);
 398         return 0;
 399 }
 400
 401 static int setup_signals(Uploader *u) {
 402         int r;
 403
 404         assert(u);
 405
 406         assert_se(sigprocmask_many(SIG_SETMASK, NULL, SIGINT, SIGTERM, -1) >= 0);
 407
 408         r = sd_event_add_signal(u->events, &u->sigterm_event, SIGTERM, dispatch_sigterm, u);
 409         if (r < 0)
 410                 return r;
 411
 412         r = sd_event_add_signal(u->events, &u->sigint_event, SIGINT, dispatch_sigterm, u);
 413         if (r < 0)
 414                 return r;
 415
 416         return 0;
 417 }
 418
 419 static int setup_uploader(Uploader *u, const char *url, const char *state_file) {
 420         int r;
 421         const char *host, *proto = "";
 422
 423         assert(u);
 424         assert(url);
 425
 426         *u = (Uploader) {
 427                 .input = -1,
 428         };
 429
 430         host = STARTSWITH_SET(url, "http://", "https://");
 431         if (!host) {
 432                 host = url;
 433                 proto = "https://";
 434         }
 435
 436         if (strchr(host, ':'))
 437                 u->url = strjoin(proto, url, "/upload");
 438         else {
 439                 char *t;
 440                 size_t x;
 441
 442                 t = strdupa_safe(url);
 443                 x = strlen(t);
 444                 while (x > 0 && t[x - 1] == '/')
 445                         t[x - 1] = '\0';
 446
 447                 u->url = strjoin(proto, t, ":" STRINGIFY(DEFAULT_PORT), "/upload");
 448         }
 449         if (!u->url)
 450                 return log_oom();
 451
 452         u->state_file = state_file;
 453
 454         r = sd_event_default(&u->events);
 455         if (r < 0)
 456                 return log_error_errno(r, "sd_event_default failed: %m");
 457
 458         r = setup_signals(u);
 459         if (r < 0)
 460                 return log_error_errno(r, "Failed to set up signals: %m");
 461
 462         (void) sd_watchdog_enabled(false, &u->watchdog_usec);
 463
 464         return load_cursor_state(u);
 465 }
 466
 467 static void destroy_uploader(Uploader *u) {
 468         assert(u);
 469
 470         curl_easy_cleanup(u->easy);
 471         curl_slist_free_all(u->header);
 472         free(u->answer);
 473
 474         free(u->last_cursor);
 475         free(u->current_cursor);
 476
 477         free(u->url);
 478
 479         u->input_event = sd_event_source_unref(u->input_event);
 480
 481         close_fd_input(u);
 482         close_journal_input(u);
 483
 484         sd_event_source_unref(u->sigterm_event);
 485         sd_event_source_unref(u->sigint_event);
 486         sd_event_unref(u->events);
 487 }
 488
 489 static int perform_upload(Uploader *u) {
 490         CURLcode code;
 491         long status;
 492
 493         assert(u);
 494
 495         u->watchdog_timestamp = now(CLOCK_MONOTONIC);
 496         code = curl_easy_perform(u->easy);
 497         if (code) {
 498                 if (u->error[0])
 499                         log_error("Upload to %s failed: %.*s",
 500                                   u->url, (int) sizeof(u->error), u->error);
 501                 else
 502                         log_error("Upload to %s failed: %s",
 503                                   u->url, curl_easy_strerror(code));
 504                 return -EIO;
 505         }
 506
 507         code = curl_easy_getinfo(u->easy, CURLINFO_RESPONSE_CODE, &status);
 508         if (code)
 509                 return log_error_errno(SYNTHETIC_ERRNO(EUCLEAN),
 510                                        "Failed to retrieve response code: %s",
 511                                        curl_easy_strerror(code));
 512
 513         if (status >= 300)
 514                 return log_error_errno(SYNTHETIC_ERRNO(EIO),
 515                                        "Upload to %s failed with code %ld: %s",
 516                                        u->url, status, strna(u->answer));
 517         else if (status < 200)
 518                 return log_error_errno(SYNTHETIC_ERRNO(EIO),
 519                                        "Upload to %s finished with unexpected code %ld: %s",
 520                                        u->url, status, strna(u->answer));
 521         else
 522                 log_debug("Upload finished successfully with code %ld: %s",
 523                           status, strna(u->answer));
 524
 525         free_and_replace(u->last_cursor, u->current_cursor);
 526
 527         return update_cursor_state(u);
 528 }
 529
 530 static int config_parse_path_or_ignore(
 531                 const char *unit,
 532                 const char *filename,
 533                 unsigned line,
 534                 const char *section,
 535                 unsigned section_line,
 536                 const char *lvalue,
 537                 int ltype,
 538                 const char *rvalue,
 539                 void *data,
 540                 void *userdata) {
 541
 542         _cleanup_free_ char *n = NULL;
 543         bool fatal = ltype;
 544         char **s = data;
 545         int r;
 546
 547         assert(filename);
 548         assert(lvalue);
 549         assert(rvalue);
 550         assert(data);
 551
 552         if (isempty(rvalue))
 553                 goto finalize;
 554
 555         n = strdup(rvalue);
 556         if (!n)
 557                 return log_oom();
 558
 559         if (streq(n, "-"))
 560                 goto finalize;
 561
 562         r = path_simplify_and_warn(n, PATH_CHECK_ABSOLUTE | (fatal ? PATH_CHECK_FATAL : 0), unit, filename, line, lvalue);
 563         if (r < 0)
 564                 return fatal ? -ENOEXEC : 0;
 565
 566 finalize:
 567         return free_and_replace(*s, n);
 568 }
 569
 570 static int parse_config(void) {
 571         const ConfigTableItem items[] = {
 572                 { "Upload",  "URL",                    config_parse_string,         CONFIG_PARSE_STRING_SAFE, &arg_url                  },
 573                 { "Upload",  "ServerKeyFile",          config_parse_path_or_ignore, 0,                        &arg_key                  },
 574                 { "Upload",  "ServerCertificateFile",  config_parse_path_or_ignore, 0,                        &arg_cert                 },
 575                 { "Upload",  "TrustedCertificateFile", config_parse_path_or_ignore, 0,                        &arg_trust                },
 576                 { "Upload",  "NetworkTimeoutSec",      config_parse_sec,            0,                        &arg_network_timeout_usec },
 577                 {}
 578         };
 579
 580         return config_parse_many_nulstr(
 581                         PKGSYSCONFDIR "/journal-upload.conf",
 582                         CONF_PATHS_NULSTR("systemd/journal-upload.conf.d"),
 583                         "Upload\0",
 584                         config_item_table_lookup, items,
 585                         CONFIG_PARSE_WARN,
 586                         NULL,
 587                         NULL);
 588 }
 589
 590 static int help(void) {
 591         _cleanup_free_ char *link = NULL;
 592         int r;
 593
 594         r = terminal_urlify_man("systemd-journal-upload.service", "8", &link);
 595         if (r < 0)
 596                 return log_oom();
 597
 598         printf("%s -u URL {FILE|-}...\n\n"
 599                "Upload journal events to a remote server.\n\n"
 600                "  -h --help                 Show this help\n"
 601                "     --version              Show package version\n"
 602                "  -u --url=URL              Upload to this address (default port "
 603                                             STRINGIFY(DEFAULT_PORT) ")\n"
 604                "     --key=FILENAME         Specify key in PEM format (default:\n"
 605                "                            \"" PRIV_KEY_FILE "\")\n"
 606                "     --cert=FILENAME        Specify certificate in PEM format (default:\n"
 607                "                            \"" CERT_FILE "\")\n"
 608                "     --trust=FILENAME|all   Specify CA certificate or disable checking (default:\n"
 609                "                            \"" TRUST_FILE "\")\n"
 610                "     --system               Use the system journal\n"
 611                "     --user                 Use the user journal for the current user\n"
 612                "  -m --merge                Use  all available journals\n"
 613                "  -M --machine=CONTAINER    Operate on local container\n"
 614                "  -D --directory=PATH       Use journal files from directory\n"
 615                "     --file=PATH            Use this journal file\n"
 616                "     --cursor=CURSOR        Start at the specified cursor\n"
 617                "     --after-cursor=CURSOR  Start after the specified cursor\n"
 618                "     --follow[=BOOL]        Do [not] wait for input\n"
 619                "     --save-state[=FILE]    Save uploaded cursors (default \n"
 620                "                            " STATE_FILE ")\n"
 621                "\nSee the %s for details.\n",
 622                program_invocation_short_name,
 623                link);
 624
 625         return 0;
 626 }
 627
 628 static int parse_argv(int argc, char *argv[]) {
 629         enum {
 630                 ARG_VERSION = 0x100,
 631                 ARG_KEY,
 632                 ARG_CERT,
 633                 ARG_TRUST,
 634                 ARG_USER,
 635                 ARG_SYSTEM,
 636                 ARG_FILE,
 637                 ARG_CURSOR,
 638                 ARG_AFTER_CURSOR,
 639                 ARG_FOLLOW,
 640                 ARG_SAVE_STATE,
 641         };
 642
 643         static const struct option options[] = {
 644                 { "help",         no_argument,       NULL, 'h'                },
 645                 { "version",      no_argument,       NULL, ARG_VERSION        },
 646                 { "url",          required_argument, NULL, 'u'                },
 647                 { "key",          required_argument, NULL, ARG_KEY            },
 648                 { "cert",         required_argument, NULL, ARG_CERT           },
 649                 { "trust",        required_argument, NULL, ARG_TRUST          },
 650                 { "system",       no_argument,       NULL, ARG_SYSTEM         },
 651                 { "user",         no_argument,       NULL, ARG_USER           },
 652                 { "merge",        no_argument,       NULL, 'm'                },
 653                 { "machine",      required_argument, NULL, 'M'                },
 654                 { "directory",    required_argument, NULL, 'D'                },
 655                 { "file",         required_argument, NULL, ARG_FILE           },
 656                 { "cursor",       required_argument, NULL, ARG_CURSOR         },
 657                 { "after-cursor", required_argument, NULL, ARG_AFTER_CURSOR   },
 658                 { "follow",       optional_argument, NULL, ARG_FOLLOW         },
 659                 { "save-state",   optional_argument, NULL, ARG_SAVE_STATE     },
 660                 {}
 661         };
 662
 663         int c, r;
 664
 665         assert(argc >= 0);
 666         assert(argv);
 667
 668         opterr = 0;
 669
 670         while ((c = getopt_long(argc, argv, "hu:mM:D:", options, NULL)) >= 0)
 671                 switch(c) {
 672                 case 'h':
 673                         return help();
 674
 675                 case ARG_VERSION:
 676                         return version();
 677
 678                 case 'u':
 679                         if (arg_url)
 680                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 681                                                        "cannot use more than one --url");
 682
 683                         arg_url = optarg;
 684                         break;
 685
 686                 case ARG_KEY:
 687                         if (arg_key)
 688                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 689                                                        "cannot use more than one --key");
 690
 691                         arg_key = optarg;
 692                         break;
 693
 694                 case ARG_CERT:
 695                         if (arg_cert)
 696                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 697                                                        "cannot use more than one --cert");
 698
 699                         arg_cert = optarg;
 700                         break;
 701
 702                 case ARG_TRUST:
 703                         if (arg_trust)
 704                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 705                                                        "cannot use more than one --trust");
 706
 707                         arg_trust = optarg;
 708                         break;
 709
 710                 case ARG_SYSTEM:
 711                         arg_journal_type |= SD_JOURNAL_SYSTEM;
 712                         break;
 713
 714                 case ARG_USER:
 715                         arg_journal_type |= SD_JOURNAL_CURRENT_USER;
 716                         break;
 717
 718                 case 'm':
 719                         arg_merge = true;
 720                         break;
 721
 722                 case 'M':
 723                         if (arg_machine)
 724                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 725                                                        "cannot use more than one --machine/-M");
 726
 727                         arg_machine = optarg;
 728                         break;
 729
 730                 case 'D':
 731                         if (arg_directory)
 732                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 733                                                        "cannot use more than one --directory/-D");
 734
 735                         arg_directory = optarg;
 736                         break;
 737
 738                 case ARG_FILE:
 739                         r = glob_extend(&arg_file, optarg, GLOB_NOCHECK);
 740                         if (r < 0)
 741                                 return log_error_errno(r, "Failed to add paths: %m");
 742                         break;
 743
 744                 case ARG_CURSOR:
 745                         if (arg_cursor)
 746                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 747                                                        "cannot use more than one --cursor/--after-cursor");
 748
 749                         arg_cursor = optarg;
 750                         break;
 751
 752                 case ARG_AFTER_CURSOR:
 753                         if (arg_cursor)
 754                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 755                                                        "cannot use more than one --cursor/--after-cursor");
 756
 757                         arg_cursor = optarg;
 758                         arg_after_cursor = true;
 759                         break;
 760
 761                 case ARG_FOLLOW:
 762                         r = parse_boolean_argument("--follow", optarg, NULL);
 763                         if (r < 0)
 764                                 return r;
 765                         arg_follow = r;
 766                         break;
 767
 768                 case ARG_SAVE_STATE:
 769                         arg_save_state = optarg ?: STATE_FILE;
 770                         break;
 771
 772                 case '?':
 773                         return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 774                                                "Unknown option %s.",
 775                                                argv[optind - 1]);
 776
 777                 case ':':
 778                         return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 779                                                "Missing argument to %s.",
 780                                                argv[optind - 1]);
 781
 782                 default:
 783                         assert_not_reached();
 784                 }
 785
 786         if (!arg_url)
 787                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 788                                        "Required --url/-u option missing.");
 789
 790         if (!!arg_key != !!arg_cert)
 791                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 792                                        "Options --key and --cert must be used together.");
 793
 794         if (optind < argc && (arg_directory || arg_file || arg_machine || arg_journal_type))
 795                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 796                                        "Input arguments make no sense with journal input.");
 797
 798         return 1;
 799 }
 800
 801 static int open_journal(sd_journal **j) {
 802         int r;
 803
 804         if (arg_directory)
 805                 r = sd_journal_open_directory(j, arg_directory, arg_journal_type);
 806         else if (arg_file)
 807                 r = sd_journal_open_files(j, (const char**) arg_file, 0);
 808         else if (arg_machine) {
 809 #pragma GCC diagnostic push
 810 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 811                 /* FIXME: replace with D-Bus call OpenMachineRootDirectory() so that things also work with raw disk images */
 812                 r = sd_journal_open_container(j, arg_machine, 0);
 813 #pragma GCC diagnostic pop
 814         } else
 815                 r = sd_journal_open(j, (arg_merge ? 0 : SD_JOURNAL_LOCAL_ONLY) | arg_journal_type);
 816         if (r < 0)
 817                 log_error_errno(r, "Failed to open %s: %m",
 818                                 arg_directory ? arg_directory : arg_file ? "files" : "journal");
 819         return r;
 820 }
 821
 822 static int run(int argc, char **argv) {
 823         _cleanup_(destroy_uploader) Uploader u = {};
 824         _unused_ _cleanup_(notify_on_cleanup) const char *notify_message = NULL;
 825         bool use_journal;
 826         int r;
 827
 828         log_show_color(true);
 829         log_parse_environment();
 830
 831         /* The journal merging logic potentially needs a lot of fds. */
 832         (void) rlimit_nofile_bump(HIGH_RLIMIT_NOFILE);
 833
 834         r = parse_config();
 835         if (r < 0)
 836                 return r;
 837
 838         r = parse_argv(argc, argv);
 839         if (r <= 0)
 840                 return r;
 841
 842         sigbus_install();
 843
 844         r = setup_uploader(&u, arg_url, arg_save_state);
 845         if (r < 0)
 846                 return r;
 847
 848         sd_event_set_watchdog(u.events, true);
 849
 850         r = check_cursor_updating(&u);
 851         if (r < 0)
 852                 return r;
 853
 854         log_debug("%s running as pid "PID_FMT,
 855                   program_invocation_short_name, getpid_cached());
 856
 857         use_journal = optind >= argc;
 858         if (use_journal) {
 859                 sd_journal *j;
 860                 r = open_journal(&j);
 861                 if (r < 0)
 862                         return r;
 863                 r = open_journal_for_upload(&u, j,
 864                                             arg_cursor ?: u.last_cursor,
 865                                             arg_cursor ? arg_after_cursor : true,
 866                                             arg_follow != 0);
 867                 if (r < 0)
 868                         return r;
 869         }
 870
 871         notify_message = notify_start("READY=1\n"
 872                                       "STATUS=Processing input...",
 873                                       NOTIFY_STOPPING);
 874
 875         for (;;) {
 876                 r = sd_event_get_state(u.events);
 877                 if (r < 0)
 878                         return r;
 879                 if (r == SD_EVENT_FINISHED)
 880                         return 0;
 881
 882                 if (use_journal) {
 883                         if (!u.journal)
 884                                 return 0;
 885
 886                         r = check_journal_input(&u);
 887                 } else if (u.input < 0 && !use_journal) {
 888                         if (optind >= argc)
 889                                 return 0;
 890
 891                         log_debug("Using %s as input.", argv[optind]);
 892                         r = open_file_for_upload(&u, argv[optind++]);
 893                 }
 894                 if (r < 0)
 895                         return r;
 896
 897                 if (u.uploading) {
 898                         r = perform_upload(&u);
 899                         if (r < 0)
 900                                 return r;
 901                 }
 902
 903                 r = sd_event_run(u.events, u.timeout);
 904                 if (r < 0)
 905                         return log_error_errno(r, "Failed to run event loop: %m");
 906         }
 907 }
 908
 909 DEFINE_MAIN_FUNCTION(run);