release/src/router/transmission/daemon/daemon.c

   1 /*
   2  * This file Copyright (C) 2008-2014 Mnemosyne LLC
   3  *
   4  * It may be used under the GNU GPL versions 2 or 3
   5  * or any future license endorsed by Mnemosyne LLC.
   6  *
   7  * $Id: daemon.c 14270 2014-05-05 21:08:30Z jordan $
   8  */
   9
  10 #include <errno.h>
  11 #include <stdio.h> /* printf */
  12 #include <stdlib.h> /* exit, atoi */
  13
  14 #include <fcntl.h> /* open */
  15 #include <signal.h>
  16 #ifdef HAVE_SYSLOG
  17 #include <syslog.h>
  18 #endif
  19 #include <unistd.h> /* daemon */
  20
  21 #include <event2/buffer.h>
  22 #include <event2/event.h>
  23
  24 #include <libtransmission/transmission.h>
  25 #include <libtransmission/tr-getopt.h>
  26 #include <libtransmission/log.h>
  27 #include <libtransmission/utils.h>
  28 #include <libtransmission/variant.h>
  29 #include <libtransmission/version.h>
  30
  31 #ifdef USE_SYSTEMD_DAEMON
  32  #include <systemd/sd-daemon.h>
  33 #else
  34  static void sd_notify (int status UNUSED, const char * str UNUSED) { }
  35  static void sd_notifyf (int status UNUSED, const char * fmt UNUSED, ...) { }
  36 #endif
  37
  38 #include "watch.h"
  39
  40 #define MY_NAME "transmission-daemon"
  41
  42 #define MEM_K 1024
  43 #define MEM_K_STR "KiB"
  44 #define MEM_M_STR "MiB"
  45 #define MEM_G_STR "GiB"
  46 #define MEM_T_STR "TiB"
  47
  48 #define DISK_K 1000
  49 #define DISK_B_STR  "B"
  50 #define DISK_K_STR "kB"
  51 #define DISK_M_STR "MB"
  52 #define DISK_G_STR "GB"
  53 #define DISK_T_STR "TB"
  54
  55 #define SPEED_K 1000
  56 #define SPEED_B_STR  "B/s"
  57 #define SPEED_K_STR "kB/s"
  58 #define SPEED_M_STR "MB/s"
  59 #define SPEED_G_STR "GB/s"
  60 #define SPEED_T_STR "TB/s"
  61
  62 #define LOGFILE_MODE_STR "a+"
  63
  64 static bool paused = false;
  65 static bool seenHUP = false;
  66 static const char *logfileName = NULL;
  67 static FILE *logfile = NULL;
  68 static tr_session * mySession = NULL;
  69 static tr_quark key_pidfile = 0;
  70 static struct event_base *ev_base = NULL;
  71
  72 /***
  73 ****  Config File
  74 ***/
  75
  76 static const char *
  77 getUsage (void)
  78 {
  79     return "Transmission " LONG_VERSION_STRING
  80            "  http://www.transmissionbt.com/\n"
  81            "A fast and easy BitTorrent client\n"
  82            "\n"
  83            MY_NAME " is a headless Transmission session\n"
  84            "that can be controlled via transmission-remote\n"
  85            "or the web interface.\n"
  86            "\n"
  87            "Usage: " MY_NAME " [options]";
  88 }
  89
  90 static const struct tr_option options[] =
  91 {
  92
  93     { 'a', "allowed", "Allowed IP addresses. (Default: " TR_DEFAULT_RPC_WHITELIST ")", "a", 1, "<list>" },
  94     { 'b', "blocklist", "Enable peer blocklists", "b", 0, NULL },
  95     { 'B', "no-blocklist", "Disable peer blocklists", "B", 0, NULL },
  96     { 'c', "watch-dir", "Where to watch for new .torrent files", "c", 1, "<directory>" },
  97     { 'C', "no-watch-dir", "Disable the watch-dir", "C", 0, NULL },
  98     { 941, "incomplete-dir", "Where to store new torrents until they're complete", NULL, 1, "<directory>" },
  99     { 942, "no-incomplete-dir", "Don't store incomplete torrents in a different location", NULL, 0, NULL },
 100     { 'd', "dump-settings", "Dump the settings and exit", "d", 0, NULL },
 101     { 'e', "logfile", "Dump the log messages to this filename", "e", 1, "<filename>" },
 102     { 'f', "foreground", "Run in the foreground instead of daemonizing", "f", 0, NULL },
 103     { 'g', "config-dir", "Where to look for configuration files", "g", 1, "<path>" },
 104     { 'p', "port", "RPC port (Default: " TR_DEFAULT_RPC_PORT_STR ")", "p", 1, "<port>" },
 105     { 't', "auth", "Require authentication", "t", 0, NULL },
 106     { 'T', "no-auth", "Don't require authentication", "T", 0, NULL },
 107     { 'u', "username", "Set username for authentication", "u", 1, "<username>" },
 108     { 'v', "password", "Set password for authentication", "v", 1, "<password>" },
 109     { 'V', "version", "Show version number and exit", "V", 0, NULL },
 110     { 810, "log-error", "Show error messages", NULL, 0, NULL },
 111     { 811, "log-info", "Show error and info messages", NULL, 0, NULL },
 112     { 812, "log-debug", "Show error, info, and debug messages", NULL, 0, NULL },
 113     { 'w', "download-dir", "Where to save downloaded data", "w", 1, "<path>" },
 114     { 800, "paused", "Pause all torrents on startup", NULL, 0, NULL },
 115     { 'o', "dht", "Enable distributed hash tables (DHT)", "o", 0, NULL },
 116     { 'O', "no-dht", "Disable distributed hash tables (DHT)", "O", 0, NULL },
 117     { 'y', "lpd", "Enable local peer discovery (LPD)", "y", 0, NULL },
 118     { 'Y', "no-lpd", "Disable local peer discovery (LPD)", "Y", 0, NULL },
 119     { 830, "utp", "Enable uTP for peer connections", NULL, 0, NULL },
 120     { 831, "no-utp", "Disable uTP for peer connections", NULL, 0, NULL },
 121     { 'P', "peerport", "Port for incoming peers (Default: " TR_DEFAULT_PEER_PORT_STR ")", "P", 1, "<port>" },
 122     { 'm', "portmap", "Enable portmapping via NAT-PMP or UPnP", "m", 0, NULL },
 123     { 'M', "no-portmap", "Disable portmapping", "M", 0, NULL },
 124     { 'L', "peerlimit-global", "Maximum overall number of peers (Default: " TR_DEFAULT_PEER_LIMIT_GLOBAL_STR ")", "L", 1, "<limit>" },
 125     { 'l', "peerlimit-torrent", "Maximum number of peers per torrent (Default: " TR_DEFAULT_PEER_LIMIT_TORRENT_STR ")", "l", 1, "<limit>" },
 126     { 910, "encryption-required",  "Encrypt all peer connections", "er", 0, NULL },
 127     { 911, "encryption-preferred", "Prefer encrypted peer connections", "ep", 0, NULL },
 128     { 912, "encryption-tolerated", "Prefer unencrypted peer connections", "et", 0, NULL },
 129     { 'i', "bind-address-ipv4", "Where to listen for peer connections", "i", 1, "<ipv4 addr>" },
 130     { 'I', "bind-address-ipv6", "Where to listen for peer connections", "I", 1, "<ipv6 addr>" },
 131     { 'r', "rpc-bind-address", "Where to listen for RPC connections", "r", 1, "<ipv4 addr>" },
 132     { 953, "global-seedratio", "All torrents, unless overridden by a per-torrent setting, should seed until a specific ratio", "gsr", 1, "ratio" },
 133     { 954, "no-global-seedratio", "All torrents, unless overridden by a per-torrent setting, should seed regardless of ratio", "GSR", 0, NULL },
 134     { 'x', "pid-file", "Enable PID file", "x", 1, "<pid-file>" },
 135     { 0, NULL, NULL, NULL, 0, NULL }
 136 };
 137
 138 static void
 139 showUsage (void)
 140 {
 141     tr_getopt_usage (MY_NAME, getUsage (), options);
 142     exit (0);
 143 }
 144
 145 static void
 146 gotsig (int sig)
 147 {
 148     switch (sig)
 149     {
 150         case SIGHUP:
 151         {
 152             if (!mySession)
 153             {
 154                 tr_logAddInfo ("Deferring reload until session is fully started.");
 155                 seenHUP = true;
 156             }
 157             else
 158             {
 159                 tr_variant settings;
 160                 const char * configDir;
 161
 162                 /* reopen the logfile to allow for log rotation */
 163                 if (logfileName) {
 164                     logfile = freopen (logfileName, LOGFILE_MODE_STR, logfile);
 165                     if (!logfile)
 166                         fprintf (stderr, "Couldn't reopen \"%s\": %s\n", logfileName, tr_strerror (errno));
 167                 }
 168
 169                 configDir = tr_sessionGetConfigDir (mySession);
 170                 tr_logAddInfo ("Reloading settings from \"%s\"", configDir);
 171                 tr_variantInitDict (&settings, 0);
 172                 tr_variantDictAddBool (&settings, TR_KEY_rpc_enabled, true);
 173                 tr_sessionLoadSettings (&settings, configDir, MY_NAME);
 174                 tr_sessionSet (mySession, &settings);
 175                 tr_variantFree (&settings);
 176                 tr_sessionReloadBlocklists (mySession);
 177             }
 178             break;
 179         }
 180
 181         default:
 182             tr_logAddError ("Unexpected signal (%d) in daemon, closing.", sig);
 183             /* no break */
 184
 185         case SIGINT:
 186         case SIGTERM:
 187             event_base_loopexit(ev_base, NULL);
 188             break;
 189     }
 190 }
 191
 192 #if defined (WIN32)
 193  #define USE_NO_DAEMON
 194 #elif !defined (HAVE_DAEMON) || defined (__UCLIBC__)
 195  #define USE_TR_DAEMON
 196 #else
 197  #define USE_OS_DAEMON
 198 #endif
 199
 200 static int
 201 tr_daemon (int nochdir, int noclose)
 202 {
 203 #if defined (USE_OS_DAEMON)
 204
 205     return daemon (nochdir, noclose);
 206
 207 #elif defined (USE_TR_DAEMON)
 208
 209     /* this is loosely based off of glibc's daemon () implementation
 210      * http://sourceware.org/git/?p=glibc.git;a=blob_plain;f=misc/daemon.c */
 211
 212     switch (fork ()) {
 213         case -1: return -1;
 214         case 0: break;
 215         default: _exit (0);
 216     }
 217
 218     if (setsid () == -1)
 219         return -1;
 220
 221     if (!nochdir)
 222         chdir ("/");
 223
 224     if (!noclose) {
 225         int fd = open ("/dev/null", O_RDWR, 0);
 226         dup2 (fd, STDIN_FILENO);
 227         dup2 (fd, STDOUT_FILENO);
 228         dup2 (fd, STDERR_FILENO);
 229         close (fd);
 230     }
 231
 232     return 0;
 233
 234 #else /* USE_NO_DAEMON */
 235     return 0;
 236 #endif
 237 }
 238
 239 static const char*
 240 getConfigDir (int argc, const char ** argv)
 241 {
 242     int c;
 243     const char * configDir = NULL;
 244     const char * optarg;
 245     const int ind = tr_optind;
 246
 247     while ((c = tr_getopt (getUsage (), argc, argv, options, &optarg))) {
 248         if (c == 'g') {
 249             configDir = optarg;
 250             break;
 251         }
 252     }
 253
 254     tr_optind = ind;
 255
 256     if (configDir == NULL)
 257         configDir = tr_getDefaultConfigDir (MY_NAME);
 258
 259     return configDir;
 260 }
 261
 262 static void
 263 onFileAdded (tr_session * session, const char * dir, const char * file)
 264 {
 265     char * filename = tr_buildPath (dir, file, NULL);
 266     tr_ctor * ctor = tr_ctorNew (session);
 267     int err = tr_ctorSetMetainfoFromFile (ctor, filename);
 268
 269     if (!err)
 270     {
 271         tr_torrentNew (ctor, &err, NULL);
 272
 273         if (err == TR_PARSE_ERR)
 274             tr_logAddError ("Error parsing .torrent file \"%s\"", file);
 275         else
 276         {
 277             bool trash = false;
 278             int test = tr_ctorGetDeleteSource (ctor, &trash);
 279
 280             tr_logAddInfo ("Parsing .torrent file successful \"%s\"", file);
 281
 282             if (!test && trash)
 283             {
 284                 tr_logAddInfo ("Deleting input .torrent file \"%s\"", file);
 285                 if (tr_remove (filename))
 286                     tr_logAddError ("Error deleting .torrent file: %s", tr_strerror (errno));
 287             }
 288             else
 289             {
 290                 char * new_filename = tr_strdup_printf ("%s.added", filename);
 291                 tr_rename (filename, new_filename);
 292                 tr_free (new_filename);
 293             }
 294         }
 295     }
 296
 297     tr_ctorFree (ctor);
 298     tr_free (filename);
 299 }
 300
 301 static void
 302 printMessage (FILE * logfile, int level, const char * name, const char * message, const char * file, int line)
 303 {
 304     if (logfile != NULL)
 305     {
 306         char timestr[64];
 307         tr_logGetTimeStr (timestr, sizeof (timestr));
 308         if (name)
 309             fprintf (logfile, "[%s] %s %s (%s:%d)\n", timestr, name, message, file, line);
 310         else
 311             fprintf (logfile, "[%s] %s (%s:%d)\n", timestr, message, file, line);
 312     }
 313 #ifdef HAVE_SYSLOG
 314     else /* daemon... write to syslog */
 315     {
 316         int priority;
 317
 318         /* figure out the syslog priority */
 319         switch (level) {
 320             case TR_LOG_ERROR: priority = LOG_ERR; break;
 321             case TR_LOG_DEBUG: priority = LOG_DEBUG; break;
 322             default:           priority = LOG_INFO; break;
 323         }
 324
 325         if (name)
 326             syslog (priority, "%s %s (%s:%d)", name, message, file, line);
 327         else
 328             syslog (priority, "%s (%s:%d)", message, file, line);
 329     }
 330 #endif
 331 }
 332
 333 static void
 334 pumpLogMessages (FILE * logfile)
 335 {
 336     const tr_log_message * l;
 337     tr_log_message * list = tr_logGetQueue ();
 338
 339     for (l=list; l!=NULL; l=l->next)
 340         printMessage (logfile, l->level, l->name, l->message, l->file, l->line);
 341
 342     if (logfile != NULL)
 343         fflush (logfile);
 344
 345     tr_logFreeQueue (list);
 346 }
 347
 348 static void
 349 reportStatus (void)
 350 {
 351     const double up = tr_sessionGetRawSpeed_KBps (mySession, TR_UP);
 352     const double dn = tr_sessionGetRawSpeed_KBps (mySession, TR_DOWN);
 353
 354     if (up>0 || dn>0)
 355         sd_notifyf (0, "STATUS=Uploading %.2f KBps, Downloading %.2f KBps.\n", up, dn);
 356     else
 357         sd_notify (0, "STATUS=Idle.\n");
 358 }
 359
 360 static void
 361 periodicUpdate (evutil_socket_t fd UNUSED, short what UNUSED, void *watchdir)
 362 {
 363     dtr_watchdir_update (watchdir);
 364
 365     pumpLogMessages (logfile);
 366
 367     reportStatus ();
 368 }
 369
 370 static tr_rpc_callback_status
 371 on_rpc_callback (tr_session            * session UNUSED,
 372                  tr_rpc_callback_type    type,
 373                  struct tr_torrent     * tor UNUSED,
 374                  void                  * user_data UNUSED)
 375 {
 376     if (type == TR_RPC_SESSION_CLOSE)
 377         event_base_loopexit(ev_base, NULL);
 378     return TR_RPC_OK;
 379 }
 380
 381 int
 382 main (int argc, char ** argv)
 383 {
 384     int c;
 385     const char * optarg;
 386     tr_variant settings;
 387     bool boolVal;
 388     bool loaded;
 389     bool foreground = false;
 390     bool dumpSettings = false;
 391     const char * configDir = NULL;
 392     const char * pid_filename;
 393     dtr_watchdir * watchdir = NULL;
 394     bool pidfile_created = false;
 395     tr_session * session = NULL;
 396     struct event *status_ev;
 397
 398     key_pidfile = tr_quark_new ("pidfile",  7);
 399
 400     signal (SIGINT, gotsig);
 401     signal (SIGTERM, gotsig);
 402 #ifndef WIN32
 403     signal (SIGHUP, gotsig);
 404 #endif
 405
 406     /* load settings from defaults + config file */
 407     tr_variantInitDict (&settings, 0);
 408     tr_variantDictAddBool (&settings, TR_KEY_rpc_enabled, true);
 409     configDir = getConfigDir (argc, (const char**)argv);
 410     loaded = tr_sessionLoadSettings (&settings, configDir, MY_NAME);
 411
 412     /* overwrite settings from the comamndline */
 413     tr_optind = 1;
 414     while ((c = tr_getopt (getUsage (), argc, (const char**)argv, options, &optarg))) {
 415         switch (c) {
 416             case 'a': tr_variantDictAddStr  (&settings, TR_KEY_rpc_whitelist, optarg);
 417                       tr_variantDictAddBool (&settings, TR_KEY_rpc_whitelist_enabled, true);
 418                       break;
 419             case 'b': tr_variantDictAddBool (&settings, TR_KEY_blocklist_enabled, true);
 420                       break;
 421             case 'B': tr_variantDictAddBool (&settings, TR_KEY_blocklist_enabled, false);
 422                       break;
 423             case 'c': tr_variantDictAddStr  (&settings, TR_KEY_watch_dir, optarg);
 424                       tr_variantDictAddBool (&settings, TR_KEY_watch_dir_enabled, true);
 425                       break;
 426             case 'C': tr_variantDictAddBool (&settings, TR_KEY_watch_dir_enabled, false);
 427                       break;
 428             case 941: tr_variantDictAddStr  (&settings, TR_KEY_incomplete_dir, optarg);
 429                       tr_variantDictAddBool (&settings, TR_KEY_incomplete_dir_enabled, true);
 430                       break;
 431             case 942: tr_variantDictAddBool (&settings, TR_KEY_incomplete_dir_enabled, false);
 432                       break;
 433             case 'd': dumpSettings = true;
 434                       break;
 435             case 'e': logfile = fopen (optarg, LOGFILE_MODE_STR);
 436                       if (logfile)
 437                           logfileName = optarg;
 438                       else
 439                           fprintf (stderr, "Couldn't open \"%s\": %s\n", optarg, tr_strerror (errno));
 440                       break;
 441             case 'f': foreground = true;
 442                       break;
 443             case 'g': /* handled above */
 444                       break;
 445             case 'V': /* version */
 446                       fprintf (stderr, "%s %s\n", MY_NAME, LONG_VERSION_STRING);
 447                       exit (0);
 448             case 'o': tr_variantDictAddBool (&settings, TR_KEY_dht_enabled, true);
 449                       break;
 450             case 'O': tr_variantDictAddBool (&settings, TR_KEY_dht_enabled, false);
 451                       break;
 452             case 'p': tr_variantDictAddInt (&settings, TR_KEY_rpc_port, atoi (optarg));
 453                       break;
 454             case 't': tr_variantDictAddBool (&settings, TR_KEY_rpc_authentication_required, true);
 455                       break;
 456             case 'T': tr_variantDictAddBool (&settings, TR_KEY_rpc_authentication_required, false);
 457                       break;
 458             case 'u': tr_variantDictAddStr (&settings, TR_KEY_rpc_username, optarg);
 459                       break;
 460             case 'v': tr_variantDictAddStr (&settings, TR_KEY_rpc_password, optarg);
 461                       break;
 462             case 'w': tr_variantDictAddStr (&settings, TR_KEY_download_dir, optarg);
 463                       break;
 464             case 'P': tr_variantDictAddInt (&settings, TR_KEY_peer_port, atoi (optarg));
 465                       break;
 466             case 'm': tr_variantDictAddBool (&settings, TR_KEY_port_forwarding_enabled, true);
 467                       break;
 468             case 'M': tr_variantDictAddBool (&settings, TR_KEY_port_forwarding_enabled, false);
 469                       break;
 470             case 'L': tr_variantDictAddInt (&settings, TR_KEY_peer_limit_global, atoi (optarg));
 471                       break;
 472             case 'l': tr_variantDictAddInt (&settings, TR_KEY_peer_limit_per_torrent, atoi (optarg));
 473                       break;
 474             case 800: paused = true;
 475                       break;
 476             case 910: tr_variantDictAddInt (&settings, TR_KEY_encryption, TR_ENCRYPTION_REQUIRED);
 477                       break;
 478             case 911: tr_variantDictAddInt (&settings, TR_KEY_encryption, TR_ENCRYPTION_PREFERRED);
 479                       break;
 480             case 912: tr_variantDictAddInt (&settings, TR_KEY_encryption, TR_CLEAR_PREFERRED);
 481                       break;
 482             case 'i': tr_variantDictAddStr (&settings, TR_KEY_bind_address_ipv4, optarg);
 483                       break;
 484             case 'I': tr_variantDictAddStr (&settings, TR_KEY_bind_address_ipv6, optarg);
 485                       break;
 486             case 'r': tr_variantDictAddStr (&settings, TR_KEY_rpc_bind_address, optarg);
 487                       break;
 488             case 953: tr_variantDictAddReal (&settings, TR_KEY_ratio_limit, atof (optarg));
 489                       tr_variantDictAddBool (&settings, TR_KEY_ratio_limit_enabled, true);
 490                       break;
 491             case 954: tr_variantDictAddBool (&settings, TR_KEY_ratio_limit_enabled, false);
 492                       break;
 493             case 'x': tr_variantDictAddStr (&settings, key_pidfile, optarg);
 494                       break;
 495             case 'y': tr_variantDictAddBool (&settings, TR_KEY_lpd_enabled, true);
 496                       break;
 497             case 'Y': tr_variantDictAddBool (&settings, TR_KEY_lpd_enabled, false);
 498                       break;
 499             case 810: tr_variantDictAddInt (&settings,  TR_KEY_message_level, TR_LOG_ERROR);
 500                       break;
 501             case 811: tr_variantDictAddInt (&settings,  TR_KEY_message_level, TR_LOG_INFO);
 502                       break;
 503             case 812: tr_variantDictAddInt (&settings,  TR_KEY_message_level, TR_LOG_DEBUG);
 504                       break;
 505             case 830: tr_variantDictAddBool (&settings, TR_KEY_utp_enabled, true);
 506                       break;
 507             case 831: tr_variantDictAddBool (&settings, TR_KEY_utp_enabled, false);
 508                       break;
 509             default:  showUsage ();
 510                       break;
 511         }
 512     }
 513
 514     if (foreground && !logfile)
 515         logfile = stderr;
 516
 517     if (!loaded)
 518     {
 519         printMessage (logfile, TR_LOG_ERROR, MY_NAME, "Error loading config file -- exiting.", __FILE__, __LINE__);
 520         return -1;
 521     }
 522
 523     if (dumpSettings)
 524     {
 525         char * str = tr_variantToStr (&settings, TR_VARIANT_FMT_JSON, NULL);
 526         fprintf (stderr, "%s", str);
 527         tr_free (str);
 528         return 0;
 529     }
 530
 531     if (!foreground && tr_daemon (true, false) < 0)
 532     {
 533         char buf[256];
 534         tr_snprintf (buf, sizeof (buf), "Failed to daemonize: %s", tr_strerror (errno));
 535         printMessage (logfile, TR_LOG_ERROR, MY_NAME, buf, __FILE__, __LINE__);
 536         exit (1);
 537     }
 538
 539     sd_notifyf (0, "MAINPID=%d\n", (int)getpid());
 540
 541     /* setup event state */
 542     ev_base = event_base_new();
 543     if (ev_base == NULL)
 544     {
 545         char buf[256];
 546         tr_snprintf(buf, sizeof(buf), "Failed to init daemon event state: %s", tr_strerror(errno));
 547         printMessage (logfile, TR_LOG_ERROR, MY_NAME, buf, __FILE__, __LINE__);
 548         exit (1);
 549     }
 550
 551     /* start the session */
 552     tr_formatter_mem_init (MEM_K, MEM_K_STR, MEM_M_STR, MEM_G_STR, MEM_T_STR);
 553     tr_formatter_size_init (DISK_K, DISK_K_STR, DISK_M_STR, DISK_G_STR, DISK_T_STR);
 554     tr_formatter_speed_init (SPEED_K, SPEED_K_STR, SPEED_M_STR, SPEED_G_STR, SPEED_T_STR);
 555     session = tr_sessionInit ("daemon", configDir, true, &settings);
 556     tr_sessionSetRPCCallback (session, on_rpc_callback, NULL);
 557     tr_logAddNamedInfo (NULL, "Using settings from \"%s\"", configDir);
 558     tr_sessionSaveSettings (session, configDir, &settings);
 559
 560     pid_filename = NULL;
 561     tr_variantDictFindStr (&settings, key_pidfile, &pid_filename, NULL);
 562     if (pid_filename && *pid_filename)
 563     {
 564         FILE * fp = fopen (pid_filename, "w+");
 565         if (fp != NULL)
 566         {
 567             fprintf (fp, "%d", (int)getpid ());
 568             fclose (fp);
 569             tr_logAddInfo ("Saved pidfile \"%s\"", pid_filename);
 570             pidfile_created = true;
 571         }
 572         else
 573             tr_logAddError ("Unable to save pidfile \"%s\": %s", pid_filename, tr_strerror (errno));
 574     }
 575
 576     if (tr_variantDictFindBool (&settings, TR_KEY_rpc_authentication_required, &boolVal) && boolVal)
 577         tr_logAddNamedInfo (MY_NAME, "requiring authentication");
 578
 579     mySession = session;
 580
 581     /* If we got a SIGHUP during startup, process that now. */
 582     if (seenHUP)
 583         gotsig (SIGHUP);
 584
 585     /* maybe add a watchdir */
 586     {
 587         const char * dir;
 588
 589         if (tr_variantDictFindBool (&settings, TR_KEY_watch_dir_enabled, &boolVal)
 590             && boolVal
 591             && tr_variantDictFindStr (&settings, TR_KEY_watch_dir, &dir, NULL)
 592             && dir
 593             && *dir)
 594         {
 595             tr_logAddInfo ("Watching \"%s\" for new .torrent files", dir);
 596             watchdir = dtr_watchdir_new (mySession, dir, onFileAdded);
 597         }
 598     }
 599
 600     /* load the torrents */
 601     {
 602         tr_torrent ** torrents;
 603         tr_ctor * ctor = tr_ctorNew (mySession);
 604         if (paused)
 605             tr_ctorSetPaused (ctor, TR_FORCE, true);
 606         torrents = tr_sessionLoadTorrents (mySession, ctor, NULL);
 607         tr_free (torrents);
 608         tr_ctorFree (ctor);
 609     }
 610
 611 #ifdef HAVE_SYSLOG
 612     if (!foreground)
 613         openlog (MY_NAME, LOG_CONS|LOG_PID, LOG_DAEMON);
 614 #endif
 615
 616     /* Create new timer event to report daemon status */
 617     {
 618         struct timeval one_sec = { 1, 0 };
 619         status_ev = event_new(ev_base, -1, EV_PERSIST, &periodicUpdate, watchdir);
 620         if (status_ev == NULL)
 621         {
 622             tr_logAddError("Failed to create status event %s", tr_strerror(errno));
 623             goto cleanup;
 624         }
 625         if (event_add(status_ev, &one_sec) == -1)
 626         {
 627             tr_logAddError("Failed to add status event %s", tr_strerror(errno));
 628             goto cleanup;
 629         }
 630     }
 631
 632     sd_notify( 0, "READY=1\n" );
 633
 634     /* Run daemon event loop */
 635     if (event_base_dispatch(ev_base) == -1)
 636     {
 637         tr_logAddError("Failed to launch daemon event loop: %s", tr_strerror(errno));
 638         goto cleanup;
 639     }
 640
 641 cleanup:
 642     sd_notify( 0, "STATUS=Closing transmission session...\n" );
 643     printf ("Closing transmission session...");
 644
 645     if (status_ev)
 646     {
 647         event_del(status_ev);
 648         event_free(status_ev);
 649     }
 650     event_base_free(ev_base);
 651
 652     tr_sessionSaveSettings (mySession, configDir, &settings);
 653     dtr_watchdir_free (watchdir);
 654     tr_sessionClose (mySession);
 655     pumpLogMessages (logfile);
 656     printf (" done.\n");
 657
 658     /* shutdown */
 659 #if HAVE_SYSLOG
 660     if (!foreground)
 661     {
 662         syslog (LOG_INFO, "%s", "Closing session");
 663         closelog ();
 664     }
 665 #endif
 666
 667     /* cleanup */
 668     if (pidfile_created)
 669         tr_remove (pid_filename);
 670     tr_variantFree (&settings);
 671     sd_notify (0, "STATUS=\n");
 672     return 0;
 673 }