src/journal-remote/journal-upload.c

   1 /***
   2   This file is part of systemd.
   3
   4   Copyright 2014 Zbigniew Jędrzejewski-Szmek
   5
   6   systemd is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as published by
   8   the Free Software Foundation; either version 2.1 of the License, or
   9   (at your option) any later version.
  10
  11   systemd is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  18 ***/
  19
  20 #include <curl/curl.h>
  21 #include <fcntl.h>
  22 #include <getopt.h>
  23 #include <stdio.h>
  24 #include <sys/stat.h>
  25
  26 #include "sd-daemon.h"
  27
  28 #include "alloc-util.h"
  29 #include "conf-parser.h"
  30 #include "def.h"
  31 #include "fd-util.h"
  32 #include "fileio.h"
  33 #include "format-util.h"
  34 #include "glob-util.h"
  35 #include "journal-upload.h"
  36 #include "log.h"
  37 #include "mkdir.h"
  38 #include "parse-util.h"
  39 #include "sigbus.h"
  40 #include "signal-util.h"
  41 #include "string-util.h"
  42 #include "util.h"
  43
  44 #define PRIV_KEY_FILE CERTIFICATE_ROOT "/private/journal-upload.pem"
  45 #define CERT_FILE     CERTIFICATE_ROOT "/certs/journal-upload.pem"
  46 #define TRUST_FILE    CERTIFICATE_ROOT "/ca/trusted.pem"
  47 #define DEFAULT_PORT  19532
  48
  49 static const char* arg_url = NULL;
  50 static const char *arg_key = NULL;
  51 static const char *arg_cert = NULL;
  52 static const char *arg_trust = NULL;
  53 static const char *arg_directory = NULL;
  54 static char **arg_file = NULL;
  55 static const char *arg_cursor = NULL;
  56 static bool arg_after_cursor = false;
  57 static int arg_journal_type = 0;
  58 static const char *arg_machine = NULL;
  59 static bool arg_merge = false;
  60 static int arg_follow = -1;
  61 static const char *arg_save_state = NULL;
  62
  63 static void close_fd_input(Uploader *u);
  64
  65 #define SERVER_ANSWER_KEEP 2048
  66
  67 #define STATE_FILE "/var/lib/systemd/journal-upload/state"
  68
  69 #define easy_setopt(curl, opt, value, level, cmd)                       \
  70         do {                                                            \
  71                 code = curl_easy_setopt(curl, opt, value);              \
  72                 if (code) {                                             \
  73                         log_full(level,                                 \
  74                                  "curl_easy_setopt " #opt " failed: %s", \
  75                                   curl_easy_strerror(code));            \
  76                         cmd;                                            \
  77                 }                                                       \
  78         } while (0)
  79
  80 static size_t output_callback(char *buf,
  81                               size_t size,
  82                               size_t nmemb,
  83                               void *userp) {
  84         Uploader *u = userp;
  85
  86         assert(u);
  87
  88         log_debug("The server answers (%zu bytes): %.*s",
  89                   size*nmemb, (int)(size*nmemb), buf);
  90
  91         if (nmemb && !u->answer) {
  92                 u->answer = strndup(buf, size*nmemb);
  93                 if (!u->answer)
  94                         log_warning_errno(ENOMEM, "Failed to store server answer (%zu bytes): %m",
  95                                           size*nmemb);
  96         }
  97
  98         return size * nmemb;
  99 }
 100
 101 static int check_cursor_updating(Uploader *u) {
 102         _cleanup_free_ char *temp_path = NULL;
 103         _cleanup_fclose_ FILE *f = NULL;
 104         int r;
 105
 106         if (!u->state_file)
 107                 return 0;
 108
 109         r = mkdir_parents(u->state_file, 0755);
 110         if (r < 0)
 111                 return log_error_errno(r, "Cannot create parent directory of state file %s: %m",
 112                                        u->state_file);
 113
 114         r = fopen_temporary(u->state_file, &f, &temp_path);
 115         if (r < 0)
 116                 return log_error_errno(r, "Cannot save state to %s: %m",
 117                                        u->state_file);
 118         unlink(temp_path);
 119
 120         return 0;
 121 }
 122
 123 static int update_cursor_state(Uploader *u) {
 124         _cleanup_free_ char *temp_path = NULL;
 125         _cleanup_fclose_ FILE *f = NULL;
 126         int r;
 127
 128         if (!u->state_file || !u->last_cursor)
 129                 return 0;
 130
 131         r = fopen_temporary(u->state_file, &f, &temp_path);
 132         if (r < 0)
 133                 goto fail;
 134
 135         fprintf(f,
 136                 "# This is private data. Do not parse.\n"
 137                 "LAST_CURSOR=%s\n",
 138                 u->last_cursor);
 139
 140         r = fflush_and_check(f);
 141         if (r < 0)
 142                 goto fail;
 143
 144         if (rename(temp_path, u->state_file) < 0) {
 145                 r = -errno;
 146                 goto fail;
 147         }
 148
 149         return 0;
 150
 151 fail:
 152         if (temp_path)
 153                 (void) unlink(temp_path);
 154
 155         (void) unlink(u->state_file);
 156
 157         return log_error_errno(r, "Failed to save state %s: %m", u->state_file);
 158 }
 159
 160 static int load_cursor_state(Uploader *u) {
 161         int r;
 162
 163         if (!u->state_file)
 164                 return 0;
 165
 166         r = parse_env_file(u->state_file, NEWLINE,
 167                            "LAST_CURSOR",  &u->last_cursor,
 168                            NULL);
 169
 170         if (r == -ENOENT)
 171                 log_debug("State file %s is not present.", u->state_file);
 172         else if (r < 0)
 173                 return log_error_errno(r, "Failed to read state file %s: %m",
 174                                        u->state_file);
 175         else
 176                 log_debug("Last cursor was %s", u->last_cursor);
 177
 178         return 0;
 179 }
 180
 181
 182
 183 int start_upload(Uploader *u,
 184                  size_t (*input_callback)(void *ptr,
 185                                           size_t size,
 186                                           size_t nmemb,
 187                                           void *userdata),
 188                  void *data) {
 189         CURLcode code;
 190
 191         assert(u);
 192         assert(input_callback);
 193
 194         if (!u->header) {
 195                 struct curl_slist *h;
 196
 197                 h = curl_slist_append(NULL, "Content-Type: application/vnd.fdo.journal");
 198                 if (!h)
 199                         return log_oom();
 200
 201                 h = curl_slist_append(h, "Transfer-Encoding: chunked");
 202                 if (!h) {
 203                         curl_slist_free_all(h);
 204                         return log_oom();
 205                 }
 206
 207                 h = curl_slist_append(h, "Accept: text/plain");
 208                 if (!h) {
 209                         curl_slist_free_all(h);
 210                         return log_oom();
 211                 }
 212
 213                 u->header = h;
 214         }
 215
 216         if (!u->easy) {
 217                 CURL *curl;
 218
 219                 curl = curl_easy_init();
 220                 if (!curl) {
 221                         log_error("Call to curl_easy_init failed.");
 222                         return -ENOSR;
 223                 }
 224
 225                 /* tell it to POST to the URL */
 226                 easy_setopt(curl, CURLOPT_POST, 1L,
 227                             LOG_ERR, return -EXFULL);
 228
 229                 easy_setopt(curl, CURLOPT_ERRORBUFFER, u->error,
 230                             LOG_ERR, return -EXFULL);
 231
 232                 /* set where to write to */
 233                 easy_setopt(curl, CURLOPT_WRITEFUNCTION, output_callback,
 234                             LOG_ERR, return -EXFULL);
 235
 236                 easy_setopt(curl, CURLOPT_WRITEDATA, data,
 237                             LOG_ERR, return -EXFULL);
 238
 239                 /* set where to read from */
 240                 easy_setopt(curl, CURLOPT_READFUNCTION, input_callback,
 241                             LOG_ERR, return -EXFULL);
 242
 243                 easy_setopt(curl, CURLOPT_READDATA, data,
 244                             LOG_ERR, return -EXFULL);
 245
 246                 /* use our special own mime type and chunked transfer */
 247                 easy_setopt(curl, CURLOPT_HTTPHEADER, u->header,
 248                             LOG_ERR, return -EXFULL);
 249
 250                 if (_unlikely_(log_get_max_level() >= LOG_DEBUG))
 251                         /* enable verbose for easier tracing */
 252                         easy_setopt(curl, CURLOPT_VERBOSE, 1L, LOG_WARNING, );
 253
 254                 easy_setopt(curl, CURLOPT_USERAGENT,
 255                             "systemd-journal-upload " PACKAGE_STRING,
 256                             LOG_WARNING, );
 257
 258                 if (arg_key || startswith(u->url, "https://")) {
 259                         easy_setopt(curl, CURLOPT_SSLKEY, arg_key ?: PRIV_KEY_FILE,
 260                                     LOG_ERR, return -EXFULL);
 261                         easy_setopt(curl, CURLOPT_SSLCERT, arg_cert ?: CERT_FILE,
 262                                     LOG_ERR, return -EXFULL);
 263                 }
 264
 265                 if (streq_ptr(arg_trust, "all"))
 266                         easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0,
 267                                     LOG_ERR, return -EUCLEAN);
 268                 else if (arg_trust || startswith(u->url, "https://"))
 269                         easy_setopt(curl, CURLOPT_CAINFO, arg_trust ?: TRUST_FILE,
 270                                     LOG_ERR, return -EXFULL);
 271
 272                 if (arg_key || arg_trust)
 273                         easy_setopt(curl, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1,
 274                                     LOG_WARNING, );
 275
 276                 u->easy = curl;
 277         } else {
 278                 /* truncate the potential old error message */
 279                 u->error[0] = '\0';
 280
 281                 free(u->answer);
 282                 u->answer = 0;
 283         }
 284
 285         /* upload to this place */
 286         code = curl_easy_setopt(u->easy, CURLOPT_URL, u->url);
 287         if (code) {
 288                 log_error("curl_easy_setopt CURLOPT_URL failed: %s",
 289                           curl_easy_strerror(code));
 290                 return -EXFULL;
 291         }
 292
 293         u->uploading = true;
 294
 295         return 0;
 296 }
 297
 298 static size_t fd_input_callback(void *buf, size_t size, size_t nmemb, void *userp) {
 299         Uploader *u = userp;
 300
 301         ssize_t r;
 302
 303         assert(u);
 304         assert(nmemb <= SSIZE_MAX / size);
 305
 306         if (u->input < 0)
 307                 return 0;
 308
 309         r = read(u->input, buf, size * nmemb);
 310         log_debug("%s: allowed %zu, read %zd", __func__, size*nmemb, r);
 311
 312         if (r > 0)
 313                 return r;
 314
 315         u->uploading = false;
 316         if (r == 0) {
 317                 log_debug("Reached EOF");
 318                 close_fd_input(u);
 319                 return 0;
 320         } else {
 321                 log_error_errno(errno, "Aborting transfer after read error on input: %m.");
 322                 return CURL_READFUNC_ABORT;
 323         }
 324 }
 325
 326 static void close_fd_input(Uploader *u) {
 327         assert(u);
 328
 329         if (u->input >= 0)
 330                 close_nointr(u->input);
 331         u->input = -1;
 332         u->timeout = 0;
 333 }
 334
 335 static int dispatch_fd_input(sd_event_source *event,
 336                              int fd,
 337                              uint32_t revents,
 338                              void *userp) {
 339         Uploader *u = userp;
 340
 341         assert(u);
 342         assert(fd >= 0);
 343
 344         if (revents & EPOLLHUP) {
 345                 log_debug("Received HUP");
 346                 close_fd_input(u);
 347                 return 0;
 348         }
 349
 350         if (!(revents & EPOLLIN)) {
 351                 log_warning("Unexpected poll event %"PRIu32".", revents);
 352                 return -EINVAL;
 353         }
 354
 355         if (u->uploading) {
 356                 log_warning("dispatch_fd_input called when uploading, ignoring.");
 357                 return 0;
 358         }
 359
 360         return start_upload(u, fd_input_callback, u);
 361 }
 362
 363 static int open_file_for_upload(Uploader *u, const char *filename) {
 364         int fd, r = 0;
 365
 366         if (streq(filename, "-"))
 367                 fd = STDIN_FILENO;
 368         else {
 369                 fd = open(filename, O_RDONLY|O_CLOEXEC|O_NOCTTY);
 370                 if (fd < 0)
 371                         return log_error_errno(errno, "Failed to open %s: %m", filename);
 372         }
 373
 374         u->input = fd;
 375
 376         if (arg_follow) {
 377                 r = sd_event_add_io(u->events, &u->input_event,
 378                                     fd, EPOLLIN, dispatch_fd_input, u);
 379                 if (r < 0) {
 380                         if (r != -EPERM || arg_follow > 0)
 381                                 return log_error_errno(r, "Failed to register input event: %m");
 382
 383                         /* Normal files should just be consumed without polling. */
 384                         r = start_upload(u, fd_input_callback, u);
 385                 }
 386         }
 387
 388         return r;
 389 }
 390
 391 static int dispatch_sigterm(sd_event_source *event,
 392                             const struct signalfd_siginfo *si,
 393                             void *userdata) {
 394         Uploader *u = userdata;
 395
 396         assert(u);
 397
 398         log_received_signal(LOG_INFO, si);
 399
 400         close_fd_input(u);
 401         close_journal_input(u);
 402
 403         sd_event_exit(u->events, 0);
 404         return 0;
 405 }
 406
 407 static int setup_signals(Uploader *u) {
 408         int r;
 409
 410         assert(u);
 411
 412         assert_se(sigprocmask_many(SIG_SETMASK, NULL, SIGINT, SIGTERM, -1) >= 0);
 413
 414         r = sd_event_add_signal(u->events, &u->sigterm_event, SIGTERM, dispatch_sigterm, u);
 415         if (r < 0)
 416                 return r;
 417
 418         r = sd_event_add_signal(u->events, &u->sigint_event, SIGINT, dispatch_sigterm, u);
 419         if (r < 0)
 420                 return r;
 421
 422         return 0;
 423 }
 424
 425 static int setup_uploader(Uploader *u, const char *url, const char *state_file) {
 426         int r;
 427         const char *host, *proto = "";
 428
 429         assert(u);
 430         assert(url);
 431
 432         memzero(u, sizeof(Uploader));
 433         u->input = -1;
 434
 435         if (!(host = startswith(url, "http://")) && !(host = startswith(url, "https://"))) {
 436                 host = url;
 437                 proto = "https://";
 438         }
 439
 440         if (strchr(host, ':'))
 441                 u->url = strjoin(proto, url, "/upload");
 442         else {
 443                 char *t;
 444                 size_t x;
 445
 446                 t = strdupa(url);
 447                 x = strlen(t);
 448                 while (x > 0 && t[x - 1] == '/')
 449                         t[x - 1] = '\0';
 450
 451                 u->url = strjoin(proto, t, ":" STRINGIFY(DEFAULT_PORT), "/upload");
 452         }
 453         if (!u->url)
 454                 return log_oom();
 455
 456         u->state_file = state_file;
 457
 458         r = sd_event_default(&u->events);
 459         if (r < 0)
 460                 return log_error_errno(r, "sd_event_default failed: %m");
 461
 462         r = setup_signals(u);
 463         if (r < 0)
 464                 return log_error_errno(r, "Failed to set up signals: %m");
 465
 466         (void) sd_watchdog_enabled(false, &u->watchdog_usec);
 467
 468         return load_cursor_state(u);
 469 }
 470
 471 static void destroy_uploader(Uploader *u) {
 472         assert(u);
 473
 474         curl_easy_cleanup(u->easy);
 475         curl_slist_free_all(u->header);
 476         free(u->answer);
 477
 478         free(u->last_cursor);
 479         free(u->current_cursor);
 480
 481         free(u->url);
 482
 483         u->input_event = sd_event_source_unref(u->input_event);
 484
 485         close_fd_input(u);
 486         close_journal_input(u);
 487
 488         sd_event_source_unref(u->sigterm_event);
 489         sd_event_source_unref(u->sigint_event);
 490         sd_event_unref(u->events);
 491 }
 492
 493 static int perform_upload(Uploader *u) {
 494         CURLcode code;
 495         long status;
 496
 497         assert(u);
 498
 499         u->watchdog_timestamp = now(CLOCK_MONOTONIC);
 500         code = curl_easy_perform(u->easy);
 501         if (code) {
 502                 if (u->error[0])
 503                         log_error("Upload to %s failed: %.*s",
 504                                   u->url, (int) sizeof(u->error), u->error);
 505                 else
 506                         log_error("Upload to %s failed: %s",
 507                                   u->url, curl_easy_strerror(code));
 508                 return -EIO;
 509         }
 510
 511         code = curl_easy_getinfo(u->easy, CURLINFO_RESPONSE_CODE, &status);
 512         if (code) {
 513                 log_error("Failed to retrieve response code: %s",
 514                           curl_easy_strerror(code));
 515                 return -EUCLEAN;
 516         }
 517
 518         if (status >= 300) {
 519                 log_error("Upload to %s failed with code %ld: %s",
 520                           u->url, status, strna(u->answer));
 521                 return -EIO;
 522         } else if (status < 200) {
 523                 log_error("Upload to %s finished with unexpected code %ld: %s",
 524                           u->url, status, strna(u->answer));
 525                 return -EIO;
 526         } else
 527                 log_debug("Upload finished successfully with code %ld: %s",
 528                           status, strna(u->answer));
 529
 530         free_and_replace(u->last_cursor, u->current_cursor);
 531
 532         return update_cursor_state(u);
 533 }
 534
 535 static int parse_config(void) {
 536         const ConfigTableItem items[] = {
 537                 { "Upload",  "URL",                    config_parse_string, 0, &arg_url    },
 538                 { "Upload",  "ServerKeyFile",          config_parse_path,   0, &arg_key    },
 539                 { "Upload",  "ServerCertificateFile",  config_parse_path,   0, &arg_cert   },
 540                 { "Upload",  "TrustedCertificateFile", config_parse_path,   0, &arg_trust  },
 541                 {}};
 542
 543         return config_parse_many_nulstr(PKGSYSCONFDIR "/journal-upload.conf",
 544                                         CONF_PATHS_NULSTR("systemd/journal-upload.conf.d"),
 545                                         "Upload\0", config_item_table_lookup, items,
 546                                         CONFIG_PARSE_WARN, NULL);
 547 }
 548
 549 static void help(void) {
 550         printf("%s -u URL {FILE|-}...\n\n"
 551                "Upload journal events to a remote server.\n\n"
 552                "  -h --help                 Show this help\n"
 553                "     --version              Show package version\n"
 554                "  -u --url=URL              Upload to this address (default port "
 555                                             STRINGIFY(DEFAULT_PORT) ")\n"
 556                "     --key=FILENAME         Specify key in PEM format (default:\n"
 557                "                            \"" PRIV_KEY_FILE "\")\n"
 558                "     --cert=FILENAME        Specify certificate in PEM format (default:\n"
 559                "                            \"" CERT_FILE "\")\n"
 560                "     --trust=FILENAME|all   Specify CA certificate or disable checking (default:\n"
 561                "                            \"" TRUST_FILE "\")\n"
 562                "     --system               Use the system journal\n"
 563                "     --user                 Use the user journal for the current user\n"
 564                "  -m --merge                Use  all available journals\n"
 565                "  -M --machine=CONTAINER    Operate on local container\n"
 566                "  -D --directory=PATH       Use journal files from directory\n"
 567                "     --file=PATH            Use this journal file\n"
 568                "     --cursor=CURSOR        Start at the specified cursor\n"
 569                "     --after-cursor=CURSOR  Start after the specified cursor\n"
 570                "     --follow[=BOOL]        Do [not] wait for input\n"
 571                "     --save-state[=FILE]    Save uploaded cursors (default \n"
 572                "                            " STATE_FILE ")\n"
 573                "  -h --help                 Show this help and exit\n"
 574                "     --version              Print version string and exit\n"
 575                , program_invocation_short_name);
 576 }
 577
 578 static int parse_argv(int argc, char *argv[]) {
 579         enum {
 580                 ARG_VERSION = 0x100,
 581                 ARG_KEY,
 582                 ARG_CERT,
 583                 ARG_TRUST,
 584                 ARG_USER,
 585                 ARG_SYSTEM,
 586                 ARG_FILE,
 587                 ARG_CURSOR,
 588                 ARG_AFTER_CURSOR,
 589                 ARG_FOLLOW,
 590                 ARG_SAVE_STATE,
 591         };
 592
 593         static const struct option options[] = {
 594                 { "help",         no_argument,       NULL, 'h'                },
 595                 { "version",      no_argument,       NULL, ARG_VERSION        },
 596                 { "url",          required_argument, NULL, 'u'                },
 597                 { "key",          required_argument, NULL, ARG_KEY            },
 598                 { "cert",         required_argument, NULL, ARG_CERT           },
 599                 { "trust",        required_argument, NULL, ARG_TRUST          },
 600                 { "system",       no_argument,       NULL, ARG_SYSTEM         },
 601                 { "user",         no_argument,       NULL, ARG_USER           },
 602                 { "merge",        no_argument,       NULL, 'm'                },
 603                 { "machine",      required_argument, NULL, 'M'                },
 604                 { "directory",    required_argument, NULL, 'D'                },
 605                 { "file",         required_argument, NULL, ARG_FILE           },
 606                 { "cursor",       required_argument, NULL, ARG_CURSOR         },
 607                 { "after-cursor", required_argument, NULL, ARG_AFTER_CURSOR   },
 608                 { "follow",       optional_argument, NULL, ARG_FOLLOW         },
 609                 { "save-state",   optional_argument, NULL, ARG_SAVE_STATE     },
 610                 {}
 611         };
 612
 613         int c, r;
 614
 615         assert(argc >= 0);
 616         assert(argv);
 617
 618         opterr = 0;
 619
 620         while ((c = getopt_long(argc, argv, "hu:mM:D:", options, NULL)) >= 0)
 621                 switch(c) {
 622                 case 'h':
 623                         help();
 624                         return 0 /* done */;
 625
 626                 case ARG_VERSION:
 627                         return version();
 628
 629                 case 'u':
 630                         if (arg_url) {
 631                                 log_error("cannot use more than one --url");
 632                                 return -EINVAL;
 633                         }
 634
 635                         arg_url = optarg;
 636                         break;
 637
 638                 case ARG_KEY:
 639                         if (arg_key) {
 640                                 log_error("cannot use more than one --key");
 641                                 return -EINVAL;
 642                         }
 643
 644                         arg_key = optarg;
 645                         break;
 646
 647                 case ARG_CERT:
 648                         if (arg_cert) {
 649                                 log_error("cannot use more than one --cert");
 650                                 return -EINVAL;
 651                         }
 652
 653                         arg_cert = optarg;
 654                         break;
 655
 656                 case ARG_TRUST:
 657                         if (arg_trust) {
 658                                 log_error("cannot use more than one --trust");
 659                                 return -EINVAL;
 660                         }
 661
 662                         arg_trust = optarg;
 663                         break;
 664
 665                 case ARG_SYSTEM:
 666                         arg_journal_type |= SD_JOURNAL_SYSTEM;
 667                         break;
 668
 669                 case ARG_USER:
 670                         arg_journal_type |= SD_JOURNAL_CURRENT_USER;
 671                         break;
 672
 673                 case 'm':
 674                         arg_merge = true;
 675                         break;
 676
 677                 case 'M':
 678                         if (arg_machine) {
 679                                 log_error("cannot use more than one --machine/-M");
 680                                 return -EINVAL;
 681                         }
 682
 683                         arg_machine = optarg;
 684                         break;
 685
 686                 case 'D':
 687                         if (arg_directory) {
 688                                 log_error("cannot use more than one --directory/-D");
 689                                 return -EINVAL;
 690                         }
 691
 692                         arg_directory = optarg;
 693                         break;
 694
 695                 case ARG_FILE:
 696                         r = glob_extend(&arg_file, optarg);
 697                         if (r < 0)
 698                                 return log_error_errno(r, "Failed to add paths: %m");
 699                         break;
 700
 701                 case ARG_CURSOR:
 702                         if (arg_cursor) {
 703                                 log_error("cannot use more than one --cursor/--after-cursor");
 704                                 return -EINVAL;
 705                         }
 706
 707                         arg_cursor = optarg;
 708                         break;
 709
 710                 case ARG_AFTER_CURSOR:
 711                         if (arg_cursor) {
 712                                 log_error("cannot use more than one --cursor/--after-cursor");
 713                                 return -EINVAL;
 714                         }
 715
 716                         arg_cursor = optarg;
 717                         arg_after_cursor = true;
 718                         break;
 719
 720                 case ARG_FOLLOW:
 721                         if (optarg) {
 722                                 r = parse_boolean(optarg);
 723                                 if (r < 0) {
 724                                         log_error("Failed to parse --follow= parameter.");
 725                                         return -EINVAL;
 726                                 }
 727
 728                                 arg_follow = !!r;
 729                         } else
 730                                 arg_follow = true;
 731
 732                         break;
 733
 734                 case ARG_SAVE_STATE:
 735                         arg_save_state = optarg ?: STATE_FILE;
 736                         break;
 737
 738                 case '?':
 739                         log_error("Unknown option %s.", argv[optind-1]);
 740                         return -EINVAL;
 741
 742                 case ':':
 743                         log_error("Missing argument to %s.", argv[optind-1]);
 744                         return -EINVAL;
 745
 746                 default:
 747                         assert_not_reached("Unhandled option code.");
 748                 }
 749
 750         if (!arg_url) {
 751                 log_error("Required --url/-u option missing.");
 752                 return -EINVAL;
 753         }
 754
 755         if (!!arg_key != !!arg_cert) {
 756                 log_error("Options --key and --cert must be used together.");
 757                 return -EINVAL;
 758         }
 759
 760         if (optind < argc && (arg_directory || arg_file || arg_machine || arg_journal_type)) {
 761                 log_error("Input arguments make no sense with journal input.");
 762                 return -EINVAL;
 763         }
 764
 765         return 1;
 766 }
 767
 768 static int open_journal(sd_journal **j) {
 769         int r;
 770
 771         if (arg_directory)
 772                 r = sd_journal_open_directory(j, arg_directory, arg_journal_type);
 773         else if (arg_file)
 774                 r = sd_journal_open_files(j, (const char**) arg_file, 0);
 775         else if (arg_machine)
 776                 r = sd_journal_open_container(j, arg_machine, 0);
 777         else
 778                 r = sd_journal_open(j, !arg_merge*SD_JOURNAL_LOCAL_ONLY + arg_journal_type);
 779         if (r < 0)
 780                 log_error_errno(r, "Failed to open %s: %m",
 781                                 arg_directory ? arg_directory : arg_file ? "files" : "journal");
 782         return r;
 783 }
 784
 785 int main(int argc, char **argv) {
 786         Uploader u;
 787         int r;
 788         bool use_journal;
 789
 790         log_show_color(true);
 791         log_parse_environment();
 792
 793         r = parse_config();
 794         if (r < 0)
 795                 goto finish;
 796
 797         r = parse_argv(argc, argv);
 798         if (r <= 0)
 799                 goto finish;
 800
 801         sigbus_install();
 802
 803         r = setup_uploader(&u, arg_url, arg_save_state);
 804         if (r < 0)
 805                 goto cleanup;
 806
 807         sd_event_set_watchdog(u.events, true);
 808
 809         r = check_cursor_updating(&u);
 810         if (r < 0)
 811                 goto cleanup;
 812
 813         log_debug("%s running as pid "PID_FMT,
 814                   program_invocation_short_name, getpid_cached());
 815
 816         use_journal = optind >= argc;
 817         if (use_journal) {
 818                 sd_journal *j;
 819                 r = open_journal(&j);
 820                 if (r < 0)
 821                         goto finish;
 822                 r = open_journal_for_upload(&u, j,
 823                                             arg_cursor ?: u.last_cursor,
 824                                             arg_cursor ? arg_after_cursor : true,
 825                                             !!arg_follow);
 826                 if (r < 0)
 827                         goto finish;
 828         }
 829
 830         sd_notify(false,
 831                   "READY=1\n"
 832                   "STATUS=Processing input...");
 833
 834         for (;;) {
 835                 r = sd_event_get_state(u.events);
 836                 if (r < 0)
 837                         break;
 838                 if (r == SD_EVENT_FINISHED)
 839                         break;
 840
 841                 if (use_journal) {
 842                         if (!u.journal)
 843                                 break;
 844
 845                         r = check_journal_input(&u);
 846                 } else if (u.input < 0 && !use_journal) {
 847                         if (optind >= argc)
 848                                 break;
 849
 850                         log_debug("Using %s as input.", argv[optind]);
 851                         r = open_file_for_upload(&u, argv[optind++]);
 852                 }
 853                 if (r < 0)
 854                         goto cleanup;
 855
 856                 if (u.uploading) {
 857                         r = perform_upload(&u);
 858                         if (r < 0)
 859                                 break;
 860                 }
 861
 862                 r = sd_event_run(u.events, u.timeout);
 863                 if (r < 0) {
 864                         log_error_errno(r, "Failed to run event loop: %m");
 865                         break;
 866                 }
 867         }
 868
 869 cleanup:
 870         sd_notify(false,
 871                   "STOPPING=1\n"
 872                   "STATUS=Shutting down...");
 873
 874         destroy_uploader(&u);
 875
 876 finish:
 877         return r >= 0 ? EXIT_SUCCESS : EXIT_FAILURE;
 878 }