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transmission/daemon/daemon.cc

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/*
* This file Copyright (C) 2008-2014 Mnemosyne LLC
*
* It may be used under the GNU GPL versions 2 or 3
* or any future license endorsed by Mnemosyne LLC.
*
*/
#include <errno.h>
#include <stdio.h> /* printf */
#include <stdlib.h> /* atoi */
#ifdef HAVE_SYSLOG
#include <syslog.h>
#endif
#ifdef _WIN32
#include <process.h> /* getpid */
#else
#include <unistd.h> /* getpid */
#endif
#include <event2/event.h>
#include <libtransmission/transmission.h>
#include <libtransmission/error.h>
#include <libtransmission/file.h>
#include <libtransmission/tr-getopt.h>
#include <libtransmission/tr-macros.h>
#include <libtransmission/log.h>
#include <libtransmission/utils.h>
#include <libtransmission/variant.h>
#include <libtransmission/version.h>
#include <libtransmission/watchdir.h>
#ifdef USE_SYSTEMD
#include <systemd/sd-daemon.h>
#else
static void sd_notify([[maybe_unused]] int status, [[maybe_unused]] char const* str)
{
}
static void sd_notifyf([[maybe_unused]] int status, [[maybe_unused]] char const* fmt, ...)
{
}
#endif
#include "daemon.h"
#define MY_NAME "transmission-daemon"
#define MEM_K 1024
#define MEM_K_STR "KiB"
#define MEM_M_STR "MiB"
#define MEM_G_STR "GiB"
#define MEM_T_STR "TiB"
#define DISK_K 1000
#define DISK_B_STR "B"
#define DISK_K_STR "kB"
#define DISK_M_STR "MB"
#define DISK_G_STR "GB"
#define DISK_T_STR "TB"
#define SPEED_K 1000
#define SPEED_B_STR "B/s"
#define SPEED_K_STR "kB/s"
#define SPEED_M_STR "MB/s"
#define SPEED_G_STR "GB/s"
#define SPEED_T_STR "TB/s"
static bool seenHUP = false;
static char const* logfileName = nullptr;
static tr_sys_file_t logfile = TR_BAD_SYS_FILE;
static tr_session* mySession = nullptr;
static tr_quark key_pidfile = 0;
static tr_quark key_watch_dir_force_generic = 0;
static struct event_base* ev_base = nullptr;
/***
**** Config File
***/
static char const* getUsage(void)
{
// clang-format off
return
"Transmission " LONG_VERSION_STRING " https://transmissionbt.com/\n"
"A fast and easy BitTorrent client\n"
"\n"
MY_NAME " is a headless Transmission session\n"
"that can be controlled via transmission-remote\n"
"or the web interface.\n"
"\n"
"Usage: " MY_NAME " [options]";
// clang-format on
}
static struct tr_option const options[] = {
{ 'a', "allowed", "Allowed IP addresses. (Default: " TR_DEFAULT_RPC_WHITELIST ")", "a", true, "<list>" },
{ 'b', "blocklist", "Enable peer blocklists", "b", false, nullptr },
{ 'B', "no-blocklist", "Disable peer blocklists", "B", false, nullptr },
{ 'c', "watch-dir", "Where to watch for new .torrent files", "c", true, "<directory>" },
{ 'C', "no-watch-dir", "Disable the watch-dir", "C", false, nullptr },
{ 941, "incomplete-dir", "Where to store new torrents until they're complete", nullptr, true, "<directory>" },
{ 942, "no-incomplete-dir", "Don't store incomplete torrents in a different location", nullptr, false, nullptr },
{ 'd', "dump-settings", "Dump the settings and exit", "d", false, nullptr },
{ 'e', "logfile", "Dump the log messages to this filename", "e", true, "<filename>" },
{ 'f', "foreground", "Run in the foreground instead of daemonizing", "f", false, nullptr },
{ 'g', "config-dir", "Where to look for configuration files", "g", true, "<path>" },
{ 'p', "port", "RPC port (Default: " TR_DEFAULT_RPC_PORT_STR ")", "p", true, "<port>" },
{ 't', "auth", "Require authentication", "t", false, nullptr },
{ 'T', "no-auth", "Don't require authentication", "T", false, nullptr },
{ 'u', "username", "Set username for authentication", "u", true, "<username>" },
{ 'v', "password", "Set password for authentication", "v", true, "<password>" },
{ 'V', "version", "Show version number and exit", "V", false, nullptr },
{ 810, "log-error", "Show error messages", nullptr, false, nullptr },
{ 811, "log-info", "Show error and info messages", nullptr, false, nullptr },
{ 812, "log-debug", "Show error, info, and debug messages", nullptr, false, nullptr },
{ 'w', "download-dir", "Where to save downloaded data", "w", true, "<path>" },
{ 800, "paused", "Pause all torrents on startup", nullptr, false, nullptr },
{ 'o', "dht", "Enable distributed hash tables (DHT)", "o", false, nullptr },
{ 'O', "no-dht", "Disable distributed hash tables (DHT)", "O", false, nullptr },
{ 'y', "lpd", "Enable local peer discovery (LPD)", "y", false, nullptr },
{ 'Y', "no-lpd", "Disable local peer discovery (LPD)", "Y", false, nullptr },
{ 830, "utp", "Enable uTP for peer connections", nullptr, false, nullptr },
{ 831, "no-utp", "Disable uTP for peer connections", nullptr, false, nullptr },
{ 'P', "peerport", "Port for incoming peers (Default: " TR_DEFAULT_PEER_PORT_STR ")", "P", true, "<port>" },
{ 'm', "portmap", "Enable portmapping via NAT-PMP or UPnP", "m", false, nullptr },
{ 'M', "no-portmap", "Disable portmapping", "M", false, nullptr },
{ 'L',
"peerlimit-global",
"Maximum overall number of peers (Default: " TR_DEFAULT_PEER_LIMIT_GLOBAL_STR ")",
"L",
true,
"<limit>" },
{ 'l',
"peerlimit-torrent",
"Maximum number of peers per torrent (Default: " TR_DEFAULT_PEER_LIMIT_TORRENT_STR ")",
"l",
true,
"<limit>" },
{ 910, "encryption-required", "Encrypt all peer connections", "er", false, nullptr },
{ 911, "encryption-preferred", "Prefer encrypted peer connections", "ep", false, nullptr },
{ 912, "encryption-tolerated", "Prefer unencrypted peer connections", "et", false, nullptr },
{ 'i', "bind-address-ipv4", "Where to listen for peer connections", "i", true, "<ipv4 addr>" },
{ 'I', "bind-address-ipv6", "Where to listen for peer connections", "I", true, "<ipv6 addr>" },
{ 'r', "rpc-bind-address", "Where to listen for RPC connections", "r", true, "<ip addr>" },
{ 953,
"global-seedratio",
"All torrents, unless overridden by a per-torrent setting, should seed until a specific ratio",
"gsr",
true,
"ratio" },
{ 954,
"no-global-seedratio",
"All torrents, unless overridden by a per-torrent setting, should seed regardless of ratio",
"GSR",
false,
nullptr },
{ 'x', "pid-file", "Enable PID file", "x", true, "<pid-file>" },
{ 0, nullptr, nullptr, nullptr, false, nullptr }
};
static bool reopen_log_file(char const* filename)
{
tr_error* error = nullptr;
tr_sys_file_t const old_log_file = logfile;
tr_sys_file_t const new_log_file = tr_sys_file_open(
filename,
TR_SYS_FILE_WRITE | TR_SYS_FILE_CREATE | TR_SYS_FILE_APPEND,
0666,
&error);
if (new_log_file == TR_BAD_SYS_FILE)
{
fprintf(stderr, "Couldn't (re)open log file \"%s\": %s\n", filename, error->message);
tr_error_free(error);
return false;
}
logfile = new_log_file;
if (old_log_file != TR_BAD_SYS_FILE)
{
tr_sys_file_close(old_log_file, nullptr);
}
return true;
}
static char const* getConfigDir(int argc, char const* const* argv)
{
int c;
char const* configDir = nullptr;
char const* optstr;
int const ind = tr_optind;
while ((c = tr_getopt(getUsage(), argc, argv, options, &optstr)) != TR_OPT_DONE)
{
if (c == 'g')
{
configDir = optstr;
break;
}
}
tr_optind = ind;
if (configDir == nullptr)
{
configDir = tr_getDefaultConfigDir(MY_NAME);
}
return configDir;
}
static tr_watchdir_status onFileAdded(tr_watchdir_t dir, char const* name, void* vsession)
{
auto const* session = static_cast<tr_session const*>(vsession);
if (!tr_str_has_suffix(name, ".torrent"))
{
return TR_WATCHDIR_IGNORE;
}
char* filename = tr_buildPath(tr_watchdir_get_path(dir), name, nullptr);
tr_ctor* ctor = tr_ctorNew(session);
int err = tr_ctorSetMetainfoFromFile(ctor, filename);
if (err == 0)
{
tr_torrentNew(ctor, &err, nullptr);
if (err == TR_PARSE_ERR)
{
tr_logAddError("Error parsing .torrent file \"%s\"", name);
}
else
{
bool trash = false;
bool const test = tr_ctorGetDeleteSource(ctor, &trash);
tr_logAddInfo("Parsing .torrent file successful \"%s\"", name);
if (test && trash)
{
tr_error* error = nullptr;
tr_logAddInfo("Deleting input .torrent file \"%s\"", name);
if (!tr_sys_path_remove(filename, &error))
{
tr_logAddError("Error deleting .torrent file: %s", error->message);
tr_error_free(error);
}
}
else
{
char* new_filename = tr_strdup_printf("%s.added", filename);
tr_sys_path_rename(filename, new_filename, nullptr);
tr_free(new_filename);
}
}
}
else
{
err = TR_PARSE_ERR;
}
tr_ctorFree(ctor);
tr_free(filename);
return err == TR_PARSE_ERR ? TR_WATCHDIR_RETRY : TR_WATCHDIR_ACCEPT;
}
static void printMessage(
tr_sys_file_t file,
[[maybe_unused]] int level,
char const* name,
char const* message,
char const* filename,
int line)
{
if (file != TR_BAD_SYS_FILE)
{
char timestr[64];
tr_logGetTimeStr(timestr, sizeof(timestr));
if (name != nullptr)
{
tr_sys_file_write_fmt(
file,
"[%s] %s %s (%s:%d)" TR_NATIVE_EOL_STR,
nullptr,
timestr,
name,
message,
filename,
line);
}
else
{
tr_sys_file_write_fmt(file, "[%s] %s (%s:%d)" TR_NATIVE_EOL_STR, nullptr, timestr, message, filename, line);
}
}
#ifdef HAVE_SYSLOG
else /* daemon... write to syslog */
{
int priority;
/* figure out the syslog priority */
switch (level)
{
case TR_LOG_ERROR:
priority = LOG_ERR;
break;
case TR_LOG_DEBUG:
priority = LOG_DEBUG;
break;
default:
priority = LOG_INFO;
break;
}
if (name != nullptr)
{
syslog(priority, "%s %s (%s:%d)", name, message, filename, line);
}
else
{
syslog(priority, "%s (%s:%d)", message, filename, line);
}
}
#endif
}
static void pumpLogMessages(tr_sys_file_t file)
{
tr_log_message* list = tr_logGetQueue();
for (tr_log_message const* l = list; l != nullptr; l = l->next)
{
printMessage(file, l->level, l->name, l->message, l->file, l->line);
}
if (file != TR_BAD_SYS_FILE)
{
tr_sys_file_flush(file, nullptr);
}
tr_logFreeQueue(list);
}
static void reportStatus(void)
{
double const up = tr_sessionGetRawSpeed_KBps(mySession, TR_UP);
double const dn = tr_sessionGetRawSpeed_KBps(mySession, TR_DOWN);
if (up > 0 || dn > 0)
{
sd_notifyf(0, "STATUS=Uploading %.2f KBps, Downloading %.2f KBps.\n", up, dn);
}
else
{
sd_notify(0, "STATUS=Idle.\n");
}
}
static void periodicUpdate([[maybe_unused]] evutil_socket_t fd, [[maybe_unused]] short what, [[maybe_unused]] void* context)
{
pumpLogMessages(logfile);
reportStatus();
}
static tr_rpc_callback_status on_rpc_callback(
[[maybe_unused]] tr_session* session,
tr_rpc_callback_type type,
[[maybe_unused]] struct tr_torrent* tor,
[[maybe_unused]] void* user_data)
{
if (type == TR_RPC_SESSION_CLOSE)
{
event_base_loopexit(ev_base, nullptr);
}
return TR_RPC_OK;
}
static bool parse_args(
int argc,
char const** argv,
tr_variant* settings,
bool* paused,
bool* dump_settings,
bool* foreground,
int* exit_code)
{
int c;
char const* optstr;
*paused = false;
*dump_settings = false;
*foreground = false;
tr_optind = 1;
while ((c = tr_getopt(getUsage(), argc, argv, options, &optstr)) != TR_OPT_DONE)
{
switch (c)
{
case 'a':
tr_variantDictAddStr(settings, TR_KEY_rpc_whitelist, optstr);
tr_variantDictAddBool(settings, TR_KEY_rpc_whitelist_enabled, true);
break;
case 'b':
tr_variantDictAddBool(settings, TR_KEY_blocklist_enabled, true);
break;
case 'B':
tr_variantDictAddBool(settings, TR_KEY_blocklist_enabled, false);
break;
case 'c':
tr_variantDictAddStr(settings, TR_KEY_watch_dir, optstr);
tr_variantDictAddBool(settings, TR_KEY_watch_dir_enabled, true);
break;
case 'C':
tr_variantDictAddBool(settings, TR_KEY_watch_dir_enabled, false);
break;
case 941:
tr_variantDictAddStr(settings, TR_KEY_incomplete_dir, optstr);
tr_variantDictAddBool(settings, TR_KEY_incomplete_dir_enabled, true);
break;
case 942:
tr_variantDictAddBool(settings, TR_KEY_incomplete_dir_enabled, false);
break;
case 'd':
*dump_settings = true;
break;
case 'e':
if (reopen_log_file(optstr))
{
logfileName = optstr;
}
break;
case 'f':
*foreground = true;
break;
case 'g': /* handled above */
break;
case 'V': /* version */
fprintf(stderr, "%s %s\n", MY_NAME, LONG_VERSION_STRING);
*exit_code = 0;
return false;
case 'o':
tr_variantDictAddBool(settings, TR_KEY_dht_enabled, true);
break;
case 'O':
tr_variantDictAddBool(settings, TR_KEY_dht_enabled, false);
break;
case 'p':
tr_variantDictAddInt(settings, TR_KEY_rpc_port, atoi(optstr));
break;
case 't':
tr_variantDictAddBool(settings, TR_KEY_rpc_authentication_required, true);
break;
case 'T':
tr_variantDictAddBool(settings, TR_KEY_rpc_authentication_required, false);
break;
case 'u':
tr_variantDictAddStr(settings, TR_KEY_rpc_username, optstr);
break;
case 'v':
tr_variantDictAddStr(settings, TR_KEY_rpc_password, optstr);
break;
case 'w':
tr_variantDictAddStr(settings, TR_KEY_download_dir, optstr);
break;
case 'P':
tr_variantDictAddInt(settings, TR_KEY_peer_port, atoi(optstr));
break;
case 'm':
tr_variantDictAddBool(settings, TR_KEY_port_forwarding_enabled, true);
break;
case 'M':
tr_variantDictAddBool(settings, TR_KEY_port_forwarding_enabled, false);
break;
case 'L':
tr_variantDictAddInt(settings, TR_KEY_peer_limit_global, atoi(optstr));
break;
case 'l':
tr_variantDictAddInt(settings, TR_KEY_peer_limit_per_torrent, atoi(optstr));
break;
case 800:
*paused = true;
break;
case 910:
tr_variantDictAddInt(settings, TR_KEY_encryption, TR_ENCRYPTION_REQUIRED);
break;
case 911:
tr_variantDictAddInt(settings, TR_KEY_encryption, TR_ENCRYPTION_PREFERRED);
break;
case 912:
tr_variantDictAddInt(settings, TR_KEY_encryption, TR_CLEAR_PREFERRED);
break;
case 'i':
tr_variantDictAddStr(settings, TR_KEY_bind_address_ipv4, optstr);
break;
case 'I':
tr_variantDictAddStr(settings, TR_KEY_bind_address_ipv6, optstr);
break;
case 'r':
tr_variantDictAddStr(settings, TR_KEY_rpc_bind_address, optstr);
break;
case 953:
tr_variantDictAddReal(settings, TR_KEY_ratio_limit, atof(optstr));
tr_variantDictAddBool(settings, TR_KEY_ratio_limit_enabled, true);
break;
case 954:
tr_variantDictAddBool(settings, TR_KEY_ratio_limit_enabled, false);
break;
case 'x':
tr_variantDictAddStr(settings, key_pidfile, optstr);
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:
tr_getopt_usage(MY_NAME, getUsage(), options);
*exit_code = 0;
return false;
}
}
return true;
}
struct daemon_data
{
tr_variant settings;
char const* configDir;
bool paused;
};
static void daemon_reconfigure([[maybe_unused]] void* arg)
{
if (mySession == nullptr)
{
tr_logAddInfo("Deferring reload until session is fully started.");
seenHUP = true;
}
else
{
tr_variant settings;
char const* configDir;
/* reopen the logfile to allow for log rotation */
if (logfileName != nullptr)
{
reopen_log_file(logfileName);
}
configDir = tr_sessionGetConfigDir(mySession);
tr_logAddInfo("Reloading settings from \"%s\"", configDir);
tr_variantInitDict(&settings, 0);
tr_variantDictAddBool(&settings, TR_KEY_rpc_enabled, true);
tr_sessionLoadSettings(&settings, configDir, MY_NAME);
tr_sessionSet(mySession, &settings);
tr_variantFree(&settings);
tr_sessionReloadBlocklists(mySession);
}
}
static void daemon_stop([[maybe_unused]] void* arg)
{
event_base_loopexit(ev_base, nullptr);
}
static int daemon_start(void* varg, [[maybe_unused]] bool foreground)
{
bool boolVal;
char const* pid_filename;
bool pidfile_created = false;
tr_session* session = nullptr;
struct event* status_ev = nullptr;
tr_watchdir_t watchdir = nullptr;
auto* arg = static_cast<daemon_data*>(varg);
tr_variant* const settings = &arg->settings;
char const* const configDir = arg->configDir;
sd_notifyf(0, "MAINPID=%d\n", (int)getpid());
/* should go before libevent calls */
tr_net_init();
/* setup event state */
ev_base = event_base_new();
if (ev_base == nullptr)
{
char buf[256];
tr_snprintf(buf, sizeof(buf), "Failed to init daemon event state: %s", tr_strerror(errno));
printMessage(logfile, TR_LOG_ERROR, MY_NAME, buf, __FILE__, __LINE__);
return 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(configDir, true, settings);
tr_sessionSetRPCCallback(session, on_rpc_callback, nullptr);
tr_logAddNamedInfo(nullptr, "Using settings from \"%s\"", configDir);
tr_sessionSaveSettings(session, configDir, settings);
pid_filename = nullptr;
(void)tr_variantDictFindStr(settings, key_pidfile, &pid_filename, nullptr);
if (!tr_str_is_empty(pid_filename))
{
tr_error* error = nullptr;
tr_sys_file_t fp = tr_sys_file_open(
pid_filename,
TR_SYS_FILE_WRITE | TR_SYS_FILE_CREATE | TR_SYS_FILE_TRUNCATE,
0666,
&error);
if (fp != TR_BAD_SYS_FILE)
{
tr_sys_file_write_fmt(fp, "%d", nullptr, (int)getpid());
tr_sys_file_close(fp, nullptr);
tr_logAddInfo("Saved pidfile \"%s\"", pid_filename);
pidfile_created = true;
}
else
{
tr_logAddError("Unable to save pidfile \"%s\": %s", pid_filename, error->message);
tr_error_free(error);
}
}
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)
{
daemon_reconfigure(arg);
}
/* maybe add a watchdir */
if (tr_variantDictFindBool(settings, TR_KEY_watch_dir_enabled, &boolVal) && boolVal)
{
char const* dir;
bool force_generic;
if (!tr_variantDictFindBool(settings, key_watch_dir_force_generic, &force_generic))
{
force_generic = false;
}
if (tr_variantDictFindStr(settings, TR_KEY_watch_dir, &dir, nullptr) && !tr_str_is_empty(dir))
{
tr_logAddInfo("Watching \"%s\" for new .torrent files", dir);
if ((watchdir = tr_watchdir_new(dir, &onFileAdded, mySession, ev_base, force_generic)) == nullptr)
{
goto CLEANUP;
}
}
}
/* load the torrents */
{
tr_torrent** torrents;
tr_ctor* ctor = tr_ctorNew(mySession);
if (arg->paused)
{
tr_ctorSetPaused(ctor, TR_FORCE, true);
}
torrents = tr_sessionLoadTorrents(mySession, ctor, nullptr);
tr_free(torrents);
tr_ctorFree(ctor);
}
#ifdef HAVE_SYSLOG
if (!foreground)
{
openlog(MY_NAME, LOG_CONS | LOG_PID, LOG_DAEMON);
}
#endif
/* Create new timer event to report daemon status */
{
constexpr auto one_sec = timeval{ 1, 0 }; // 1 second
status_ev = event_new(ev_base, -1, EV_PERSIST, &periodicUpdate, nullptr);
if (status_ev == nullptr)
{
tr_logAddError("Failed to create status event %s", tr_strerror(errno));
goto CLEANUP;
}
if (event_add(status_ev, &one_sec) == -1)
{
tr_logAddError("Failed to add status event %s", tr_strerror(errno));
goto CLEANUP;
}
}
sd_notify(0, "READY=1\n");
/* Run daemon event loop */
if (event_base_dispatch(ev_base) == -1)
{
tr_logAddError("Failed to launch daemon event loop: %s", tr_strerror(errno));
goto CLEANUP;
}
CLEANUP:
sd_notify(0, "STATUS=Closing transmission session...\n");
printf("Closing transmission session...");
tr_watchdir_free(watchdir);
if (status_ev != nullptr)
{
event_del(status_ev);
event_free(status_ev);
}
event_base_free(ev_base);
tr_sessionSaveSettings(mySession, configDir, settings);
tr_sessionClose(mySession);
pumpLogMessages(logfile);
printf(" done.\n");
/* shutdown */
#ifdef HAVE_SYSLOG
if (!foreground)
{
syslog(LOG_INFO, "%s", "Closing session");
closelog();
}
#endif
/* cleanup */
if (pidfile_created)
{
tr_sys_path_remove(pid_filename, nullptr);
}
sd_notify(0, "STATUS=\n");
return 0;
}
static bool init_daemon_data(int argc, char* argv[], struct daemon_data* data, bool* foreground, int* ret)
{
data->configDir = getConfigDir(argc, (char const* const*)argv);
/* load settings from defaults + config file */
tr_variantInitDict(&data->settings, 0);
tr_variantDictAddBool(&data->settings, TR_KEY_rpc_enabled, true);
bool const loaded = tr_sessionLoadSettings(&data->settings, data->configDir, MY_NAME);
bool dumpSettings;
*ret = 0;
/* overwrite settings from the command line */
if (!parse_args(argc, (char const**)argv, &data->settings, &data->paused, &dumpSettings, foreground, ret))
{
goto EXIT_EARLY;
}
if (*foreground && logfile == TR_BAD_SYS_FILE)
{
logfile = tr_sys_file_get_std(TR_STD_SYS_FILE_ERR, nullptr);
}
if (!loaded)
{
printMessage(logfile, TR_LOG_ERROR, MY_NAME, "Error loading config file -- exiting.", __FILE__, __LINE__);
*ret = 1;
goto EXIT_EARLY;
}
if (dumpSettings)
{
char* str = tr_variantToStr(&data->settings, TR_VARIANT_FMT_JSON, nullptr);
fprintf(stderr, "%s", str);
tr_free(str);
goto EXIT_EARLY;
}
return true;
EXIT_EARLY:
tr_variantFree(&data->settings);
return false;
}
int tr_main(int argc, char* argv[])
{
key_pidfile = tr_quark_new("pidfile", TR_BAD_SIZE);
key_watch_dir_force_generic = tr_quark_new("watch-dir-force-generic", TR_BAD_SIZE);
struct daemon_data data;
bool foreground;
int ret;
if (!init_daemon_data(argc, argv, &data, &foreground, &ret))
{
return ret;
}
auto constexpr cb = dtr_callbacks{
&daemon_start,
&daemon_stop,
&daemon_reconfigure,
};
tr_error* error = nullptr;
if (!dtr_daemon(&cb, &data, foreground, &ret, &error))
{
char buf[256];
tr_snprintf(buf, sizeof(buf), "Failed to daemonize: %s", error->message);
printMessage(logfile, TR_LOG_ERROR, MY_NAME, buf, __FILE__, __LINE__);
tr_error_free(error);
}
tr_variantFree(&data.settings);
return ret;
}
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