mirror of
https://github.com/transmission/transmission
synced 2024-12-24 08:43:27 +00:00
603 lines
21 KiB
C
603 lines
21 KiB
C
/*
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* This file Copyright (C) Mnemosyne LLC
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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*
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* $Id$
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*/
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#include <errno.h>
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#include <stdio.h> /* printf */
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#include <stdlib.h> /* exit, atoi */
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#include <fcntl.h> /* open */
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#include <signal.h>
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#ifdef HAVE_SYSLOG
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#include <syslog.h>
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#endif
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#include <unistd.h> /* daemon */
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#include <event2/buffer.h>
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#include <libtransmission/transmission.h>
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#include <libtransmission/tr-getopt.h>
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#include <libtransmission/log.h>
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#include <libtransmission/utils.h>
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#include <libtransmission/variant.h>
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#include <libtransmission/version.h>
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#include "watch.h"
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#define MY_NAME "transmission-daemon"
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#define MEM_K 1024
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#define MEM_K_STR "KiB"
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#define MEM_M_STR "MiB"
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#define MEM_G_STR "GiB"
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#define MEM_T_STR "TiB"
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#define DISK_K 1000
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#define DISK_B_STR "B"
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#define DISK_K_STR "kB"
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#define DISK_M_STR "MB"
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#define DISK_G_STR "GB"
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#define DISK_T_STR "TB"
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#define SPEED_K 1000
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#define SPEED_B_STR "B/s"
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#define SPEED_K_STR "kB/s"
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#define SPEED_M_STR "MB/s"
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#define SPEED_G_STR "GB/s"
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#define SPEED_T_STR "TB/s"
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#define LOGFILE_MODE_STR "a+"
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static bool paused = false;
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static bool closing = false;
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static bool seenHUP = false;
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static const char *logfileName = NULL;
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static FILE *logfile = NULL;
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static tr_session * mySession = NULL;
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static tr_quark key_pidfile = 0;
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/***
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**** Config File
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***/
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static const char *
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getUsage (void)
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{
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return "Transmission " LONG_VERSION_STRING
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" http://www.transmissionbt.com/\n"
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"A fast and easy BitTorrent client\n"
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"\n"
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MY_NAME " is a headless Transmission session\n"
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"that can be controlled via transmission-remote\n"
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"or the web interface.\n"
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"\n"
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"Usage: " MY_NAME " [options]";
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}
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static const struct tr_option options[] =
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{
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{ 'a', "allowed", "Allowed IP addresses. (Default: " TR_DEFAULT_RPC_WHITELIST ")", "a", 1, "<list>" },
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{ 'b', "blocklist", "Enable peer blocklists", "b", 0, NULL },
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{ 'B', "no-blocklist", "Disable peer blocklists", "B", 0, NULL },
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{ 'c', "watch-dir", "Where to watch for new .torrent files", "c", 1, "<directory>" },
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{ 'C', "no-watch-dir", "Disable the watch-dir", "C", 0, NULL },
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{ 941, "incomplete-dir", "Where to store new torrents until they're complete", NULL, 1, "<directory>" },
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{ 942, "no-incomplete-dir", "Don't store incomplete torrents in a different location", NULL, 0, NULL },
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{ 'd', "dump-settings", "Dump the settings and exit", "d", 0, NULL },
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{ 'e', "logfile", "Dump the log messages to this filename", "e", 1, "<filename>" },
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{ 'f', "foreground", "Run in the foreground instead of daemonizing", "f", 0, NULL },
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{ 'g', "config-dir", "Where to look for configuration files", "g", 1, "<path>" },
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{ 'p', "port", "RPC port (Default: " TR_DEFAULT_RPC_PORT_STR ")", "p", 1, "<port>" },
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{ 't', "auth", "Require authentication", "t", 0, NULL },
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{ 'T', "no-auth", "Don't require authentication", "T", 0, NULL },
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{ 'u', "username", "Set username for authentication", "u", 1, "<username>" },
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{ 'v', "password", "Set password for authentication", "v", 1, "<password>" },
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{ 'V', "version", "Show version number and exit", "V", 0, NULL },
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{ 810, "log-error", "Show error messages", NULL, 0, NULL },
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{ 811, "log-info", "Show error and info messages", NULL, 0, NULL },
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{ 812, "log-debug", "Show error, info, and debug messages", NULL, 0, NULL },
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{ 'w', "download-dir", "Where to save downloaded data", "w", 1, "<path>" },
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{ 800, "paused", "Pause all torrents on startup", NULL, 0, NULL },
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{ 'o', "dht", "Enable distributed hash tables (DHT)", "o", 0, NULL },
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{ 'O', "no-dht", "Disable distributed hash tables (DHT)", "O", 0, NULL },
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{ 'y', "lpd", "Enable local peer discovery (LPD)", "y", 0, NULL },
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{ 'Y', "no-lpd", "Disable local peer discovery (LPD)", "Y", 0, NULL },
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{ 830, "utp", "Enable uTP for peer connections", NULL, 0, NULL },
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{ 831, "no-utp", "Disable uTP for peer connections", NULL, 0, NULL },
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{ 'P', "peerport", "Port for incoming peers (Default: " TR_DEFAULT_PEER_PORT_STR ")", "P", 1, "<port>" },
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{ 'm', "portmap", "Enable portmapping via NAT-PMP or UPnP", "m", 0, NULL },
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{ 'M', "no-portmap", "Disable portmapping", "M", 0, NULL },
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{ 'L', "peerlimit-global", "Maximum overall number of peers (Default: " TR_DEFAULT_PEER_LIMIT_GLOBAL_STR ")", "L", 1, "<limit>" },
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{ 'l', "peerlimit-torrent", "Maximum number of peers per torrent (Default: " TR_DEFAULT_PEER_LIMIT_TORRENT_STR ")", "l", 1, "<limit>" },
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{ 910, "encryption-required", "Encrypt all peer connections", "er", 0, NULL },
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{ 911, "encryption-preferred", "Prefer encrypted peer connections", "ep", 0, NULL },
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{ 912, "encryption-tolerated", "Prefer unencrypted peer connections", "et", 0, NULL },
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{ 'i', "bind-address-ipv4", "Where to listen for peer connections", "i", 1, "<ipv4 addr>" },
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{ 'I', "bind-address-ipv6", "Where to listen for peer connections", "I", 1, "<ipv6 addr>" },
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{ 'r', "rpc-bind-address", "Where to listen for RPC connections", "r", 1, "<ipv4 addr>" },
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{ 953, "global-seedratio", "All torrents, unless overridden by a per-torrent setting, should seed until a specific ratio", "gsr", 1, "ratio" },
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{ 954, "no-global-seedratio", "All torrents, unless overridden by a per-torrent setting, should seed regardless of ratio", "GSR", 0, NULL },
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{ 'x', "pid-file", "Enable PID file", "x", 1, "<pid-file>" },
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{ 0, NULL, NULL, NULL, 0, NULL }
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};
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static void
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showUsage (void)
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{
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tr_getopt_usage (MY_NAME, getUsage (), options);
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exit (0);
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}
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static void
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gotsig (int sig)
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{
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switch (sig)
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{
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case SIGHUP:
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{
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if (!mySession)
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{
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tr_logAddInfo ("Deferring reload until session is fully started.");
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seenHUP = true;
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}
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else
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{
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tr_variant settings;
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const char * configDir;
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/* reopen the logfile to allow for log rotation */
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if (logfileName) {
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logfile = freopen (logfileName, LOGFILE_MODE_STR, logfile);
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if (!logfile)
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fprintf (stderr, "Couldn't reopen \"%s\": %s\n", logfileName, tr_strerror (errno));
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}
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configDir = tr_sessionGetConfigDir (mySession);
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tr_logAddInfo ("Reloading settings from \"%s\"", configDir);
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tr_variantInitDict (&settings, 0);
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tr_variantDictAddBool (&settings, TR_KEY_rpc_enabled, true);
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tr_sessionLoadSettings (&settings, configDir, MY_NAME);
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tr_sessionSet (mySession, &settings);
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tr_variantFree (&settings);
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tr_sessionReloadBlocklists (mySession);
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}
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break;
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}
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default:
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tr_logAddError ("Unexpected signal (%d) in daemon, closing.", sig);
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/* no break */
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case SIGINT:
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case SIGTERM:
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closing = true;
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break;
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}
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}
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#if defined (WIN32)
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#define USE_NO_DAEMON
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#elif !defined (HAVE_DAEMON) || defined (__UCLIBC__)
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#define USE_TR_DAEMON
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#else
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#define USE_OS_DAEMON
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#endif
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static int
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tr_daemon (int nochdir, int noclose)
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{
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#if defined (USE_OS_DAEMON)
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return daemon (nochdir, noclose);
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#elif defined (USE_TR_DAEMON)
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/* this is loosely based off of glibc's daemon () implementation
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* http://sourceware.org/git/?p=glibc.git;a=blob_plain;f=misc/daemon.c */
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switch (fork ()) {
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case -1: return -1;
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case 0: break;
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default: _exit (0);
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}
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if (setsid () == -1)
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return -1;
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if (!nochdir)
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chdir ("/");
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if (!noclose) {
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int fd = open ("/dev/null", O_RDWR, 0);
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dup2 (fd, STDIN_FILENO);
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dup2 (fd, STDOUT_FILENO);
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dup2 (fd, STDERR_FILENO);
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close (fd);
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}
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return 0;
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#else /* USE_NO_DAEMON */
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return 0;
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#endif
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}
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static const char*
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getConfigDir (int argc, const char ** argv)
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{
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int c;
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const char * configDir = NULL;
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const char * optarg;
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const int ind = tr_optind;
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while ((c = tr_getopt (getUsage (), argc, argv, options, &optarg))) {
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if (c == 'g') {
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configDir = optarg;
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break;
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}
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}
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tr_optind = ind;
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if (configDir == NULL)
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configDir = tr_getDefaultConfigDir (MY_NAME);
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return configDir;
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}
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static void
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onFileAdded (tr_session * session, const char * dir, const char * file)
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{
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char * filename = tr_buildPath (dir, file, NULL);
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tr_ctor * ctor = tr_ctorNew (session);
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int err = tr_ctorSetMetainfoFromFile (ctor, filename);
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if (!err)
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{
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tr_torrentNew (ctor, &err, NULL);
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if (err == TR_PARSE_ERR)
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tr_logAddError ("Error parsing .torrent file \"%s\"", file);
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else
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{
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bool trash = false;
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int test = tr_ctorGetDeleteSource (ctor, &trash);
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tr_logAddInfo ("Parsing .torrent file successful \"%s\"", file);
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if (!test && trash)
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{
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tr_logAddInfo ("Deleting input .torrent file \"%s\"", file);
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if (tr_remove (filename))
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tr_logAddError ("Error deleting .torrent file: %s", tr_strerror (errno));
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}
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else
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{
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char * new_filename = tr_strdup_printf ("%s.added", filename);
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tr_rename (filename, new_filename);
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tr_free (new_filename);
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}
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}
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}
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tr_ctorFree (ctor);
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tr_free (filename);
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}
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static void
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printMessage (FILE * logfile, int level, const char * name, const char * message, const char * file, int line)
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{
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if (logfile != NULL)
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{
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char timestr[64];
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tr_logGetTimeStr (timestr, sizeof (timestr));
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if (name)
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fprintf (logfile, "[%s] %s %s (%s:%d)\n", timestr, name, message, file, line);
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else
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fprintf (logfile, "[%s] %s (%s:%d)\n", timestr, message, file, line);
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}
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#ifdef HAVE_SYSLOG
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else /* daemon... write to syslog */
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{
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int priority;
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/* figure out the syslog priority */
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switch (level) {
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case TR_LOG_ERROR: priority = LOG_ERR; break;
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case TR_LOG_DEBUG: priority = LOG_DEBUG; break;
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default: priority = LOG_INFO; break;
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}
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if (name)
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syslog (priority, "%s %s (%s:%d)", name, message, file, line);
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else
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syslog (priority, "%s (%s:%d)", message, file, line);
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}
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#endif
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}
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static void
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pumpLogMessages (FILE * logfile)
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{
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const tr_log_message * l;
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tr_log_message * list = tr_logGetQueue ();
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for (l=list; l!=NULL; l=l->next)
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printMessage (logfile, l->level, l->name, l->message, l->file, l->line);
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if (logfile != NULL)
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fflush (logfile);
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tr_logFreeQueue (list);
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}
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static tr_rpc_callback_status
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on_rpc_callback (tr_session * session UNUSED,
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tr_rpc_callback_type type,
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struct tr_torrent * tor UNUSED,
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void * user_data UNUSED)
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{
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if (type == TR_RPC_SESSION_CLOSE)
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closing = true;
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return TR_RPC_OK;
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}
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int
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main (int argc, char ** argv)
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{
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int c;
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const char * optarg;
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tr_variant settings;
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bool boolVal;
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bool loaded;
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bool foreground = false;
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bool dumpSettings = false;
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const char * configDir = NULL;
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const char * pid_filename;
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dtr_watchdir * watchdir = NULL;
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bool pidfile_created = false;
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tr_session * session = NULL;
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key_pidfile = tr_quark_new ("pidfile", 7);
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signal (SIGINT, gotsig);
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signal (SIGTERM, gotsig);
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#ifndef WIN32
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signal (SIGHUP, gotsig);
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#endif
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/* load settings from defaults + config file */
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tr_variantInitDict (&settings, 0);
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tr_variantDictAddBool (&settings, TR_KEY_rpc_enabled, true);
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configDir = getConfigDir (argc, (const char**)argv);
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loaded = tr_sessionLoadSettings (&settings, configDir, MY_NAME);
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/* overwrite settings from the comamndline */
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tr_optind = 1;
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while ((c = tr_getopt (getUsage (), argc, (const char**)argv, options, &optarg))) {
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switch (c) {
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case 'a': tr_variantDictAddStr (&settings, TR_KEY_rpc_whitelist, optarg);
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tr_variantDictAddBool (&settings, TR_KEY_rpc_whitelist_enabled, true);
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break;
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case 'b': tr_variantDictAddBool (&settings, TR_KEY_blocklist_enabled, true);
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break;
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case 'B': tr_variantDictAddBool (&settings, TR_KEY_blocklist_enabled, false);
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break;
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case 'c': tr_variantDictAddStr (&settings, TR_KEY_watch_dir, optarg);
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tr_variantDictAddBool (&settings, TR_KEY_watch_dir_enabled, true);
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break;
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case 'C': tr_variantDictAddBool (&settings, TR_KEY_watch_dir_enabled, false);
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break;
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case 941: tr_variantDictAddStr (&settings, TR_KEY_incomplete_dir, optarg);
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tr_variantDictAddBool (&settings, TR_KEY_incomplete_dir_enabled, true);
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break;
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case 942: tr_variantDictAddBool (&settings, TR_KEY_incomplete_dir_enabled, false);
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break;
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case 'd': dumpSettings = true;
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break;
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case 'e': logfile = fopen (optarg, LOGFILE_MODE_STR);
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if (logfile)
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logfileName = optarg;
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else
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fprintf (stderr, "Couldn't open \"%s\": %s\n", optarg, tr_strerror (errno));
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break;
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case 'f': foreground = true;
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break;
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case 'g': /* handled above */
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break;
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case 'V': /* version */
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fprintf (stderr, "%s %s\n", MY_NAME, LONG_VERSION_STRING);
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exit (0);
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case 'o': tr_variantDictAddBool (&settings, TR_KEY_dht_enabled, true);
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break;
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case 'O': tr_variantDictAddBool (&settings, TR_KEY_dht_enabled, false);
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break;
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case 'p': tr_variantDictAddInt (&settings, TR_KEY_rpc_port, atoi (optarg));
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break;
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case 't': tr_variantDictAddBool (&settings, TR_KEY_rpc_authentication_required, true);
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break;
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case 'T': tr_variantDictAddBool (&settings, TR_KEY_rpc_authentication_required, false);
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break;
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case 'u': tr_variantDictAddStr (&settings, TR_KEY_rpc_username, optarg);
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break;
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case 'v': tr_variantDictAddStr (&settings, TR_KEY_rpc_password, optarg);
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break;
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case 'w': tr_variantDictAddStr (&settings, TR_KEY_download_dir, optarg);
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break;
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case 'P': tr_variantDictAddInt (&settings, TR_KEY_peer_port, atoi (optarg));
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break;
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case 'm': tr_variantDictAddBool (&settings, TR_KEY_port_forwarding_enabled, true);
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break;
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case 'M': tr_variantDictAddBool (&settings, TR_KEY_port_forwarding_enabled, false);
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break;
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case 'L': tr_variantDictAddInt (&settings, TR_KEY_peer_limit_global, atoi (optarg));
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break;
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case 'l': tr_variantDictAddInt (&settings, TR_KEY_peer_limit_per_torrent, atoi (optarg));
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break;
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case 800: paused = true;
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break;
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case 910: tr_variantDictAddInt (&settings, TR_KEY_encryption, TR_ENCRYPTION_REQUIRED);
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break;
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case 911: tr_variantDictAddInt (&settings, TR_KEY_encryption, TR_ENCRYPTION_PREFERRED);
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break;
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case 912: tr_variantDictAddInt (&settings, TR_KEY_encryption, TR_CLEAR_PREFERRED);
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break;
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case 'i': tr_variantDictAddStr (&settings, TR_KEY_bind_address_ipv4, optarg);
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break;
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case 'I': tr_variantDictAddStr (&settings, TR_KEY_bind_address_ipv6, optarg);
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break;
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case 'r': tr_variantDictAddStr (&settings, TR_KEY_rpc_bind_address, optarg);
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break;
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case 953: tr_variantDictAddReal (&settings, TR_KEY_ratio_limit, atof (optarg));
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tr_variantDictAddBool (&settings, TR_KEY_ratio_limit_enabled, true);
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break;
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case 954: tr_variantDictAddBool (&settings, TR_KEY_ratio_limit_enabled, false);
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break;
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case 'x': tr_variantDictAddStr (&settings, key_pidfile, optarg);
|
|
break;
|
|
case 'y': tr_variantDictAddBool (&settings, TR_KEY_lpd_enabled, true);
|
|
break;
|
|
case 'Y': tr_variantDictAddBool (&settings, TR_KEY_lpd_enabled, false);
|
|
break;
|
|
case 810: tr_variantDictAddInt (&settings, TR_KEY_message_level, TR_LOG_ERROR);
|
|
break;
|
|
case 811: tr_variantDictAddInt (&settings, TR_KEY_message_level, TR_LOG_INFO);
|
|
break;
|
|
case 812: tr_variantDictAddInt (&settings, TR_KEY_message_level, TR_LOG_DEBUG);
|
|
break;
|
|
case 830: tr_variantDictAddBool (&settings, TR_KEY_utp_enabled, true);
|
|
break;
|
|
case 831: tr_variantDictAddBool (&settings, TR_KEY_utp_enabled, false);
|
|
break;
|
|
default: showUsage ();
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (foreground && !logfile)
|
|
logfile = stderr;
|
|
|
|
if (!loaded)
|
|
{
|
|
printMessage (logfile, TR_LOG_ERROR, MY_NAME, "Error loading config file -- exiting.", __FILE__, __LINE__);
|
|
return -1;
|
|
}
|
|
|
|
if (dumpSettings)
|
|
{
|
|
char * str = tr_variantToStr (&settings, TR_VARIANT_FMT_JSON, NULL);
|
|
fprintf (stderr, "%s", str);
|
|
tr_free (str);
|
|
return 0;
|
|
}
|
|
|
|
if (!foreground && tr_daemon (true, false) < 0)
|
|
{
|
|
char buf[256];
|
|
tr_snprintf (buf, sizeof (buf), "Failed to daemonize: %s", tr_strerror (errno));
|
|
printMessage (logfile, TR_LOG_ERROR, MY_NAME, buf, __FILE__, __LINE__);
|
|
exit (1);
|
|
}
|
|
|
|
/* start the session */
|
|
tr_formatter_mem_init (MEM_K, MEM_K_STR, MEM_M_STR, MEM_G_STR, MEM_T_STR);
|
|
tr_formatter_size_init (DISK_K, DISK_K_STR, DISK_M_STR, DISK_G_STR, DISK_T_STR);
|
|
tr_formatter_speed_init (SPEED_K, SPEED_K_STR, SPEED_M_STR, SPEED_G_STR, SPEED_T_STR);
|
|
session = tr_sessionInit ("daemon", configDir, true, &settings);
|
|
tr_sessionSetRPCCallback (session, on_rpc_callback, NULL);
|
|
tr_logAddNamedInfo (NULL, "Using settings from \"%s\"", configDir);
|
|
tr_sessionSaveSettings (session, configDir, &settings);
|
|
|
|
pid_filename = NULL;
|
|
tr_variantDictFindStr (&settings, key_pidfile, &pid_filename, NULL);
|
|
if (pid_filename && *pid_filename)
|
|
{
|
|
FILE * fp = fopen (pid_filename, "w+");
|
|
if (fp != NULL)
|
|
{
|
|
fprintf (fp, "%d", (int)getpid ());
|
|
fclose (fp);
|
|
tr_logAddInfo ("Saved pidfile \"%s\"", pid_filename);
|
|
pidfile_created = true;
|
|
}
|
|
else
|
|
tr_logAddError ("Unable to save pidfile \"%s\": %s", pid_filename, tr_strerror (errno));
|
|
}
|
|
|
|
if (tr_variantDictFindBool (&settings, TR_KEY_rpc_authentication_required, &boolVal) && boolVal)
|
|
tr_logAddNamedInfo (MY_NAME, "requiring authentication");
|
|
|
|
mySession = session;
|
|
|
|
/* If we got a SIGHUP during startup, process that now. */
|
|
if (seenHUP)
|
|
gotsig (SIGHUP);
|
|
|
|
/* maybe add a watchdir */
|
|
{
|
|
const char * dir;
|
|
|
|
if (tr_variantDictFindBool (&settings, TR_KEY_watch_dir_enabled, &boolVal)
|
|
&& boolVal
|
|
&& tr_variantDictFindStr (&settings, TR_KEY_watch_dir, &dir, NULL)
|
|
&& dir
|
|
&& *dir)
|
|
{
|
|
tr_logAddInfo ("Watching \"%s\" for new .torrent files", dir);
|
|
watchdir = dtr_watchdir_new (mySession, dir, onFileAdded);
|
|
}
|
|
}
|
|
|
|
/* load the torrents */
|
|
{
|
|
tr_torrent ** torrents;
|
|
tr_ctor * ctor = tr_ctorNew (mySession);
|
|
if (paused)
|
|
tr_ctorSetPaused (ctor, TR_FORCE, true);
|
|
torrents = tr_sessionLoadTorrents (mySession, ctor, NULL);
|
|
tr_free (torrents);
|
|
tr_ctorFree (ctor);
|
|
}
|
|
|
|
#ifdef HAVE_SYSLOG
|
|
if (!foreground)
|
|
openlog (MY_NAME, LOG_CONS|LOG_PID, LOG_DAEMON);
|
|
#endif
|
|
|
|
while (!closing) {
|
|
tr_wait_msec (1000); /* sleep one second */
|
|
dtr_watchdir_update (watchdir);
|
|
pumpLogMessages (logfile);
|
|
}
|
|
|
|
printf ("Closing transmission session...");
|
|
tr_sessionSaveSettings (mySession, configDir, &settings);
|
|
dtr_watchdir_free (watchdir);
|
|
tr_sessionClose (mySession);
|
|
pumpLogMessages (logfile);
|
|
printf (" done.\n");
|
|
|
|
/* shutdown */
|
|
#if HAVE_SYSLOG
|
|
if (!foreground)
|
|
{
|
|
syslog (LOG_INFO, "%s", "Closing session");
|
|
closelog ();
|
|
}
|
|
#endif
|
|
|
|
/* cleanup */
|
|
if (pidfile_created)
|
|
tr_remove (pid_filename);
|
|
tr_variantFree (&settings);
|
|
return 0;
|
|
}
|