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transmission/libtransmission/session.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 <algorithm> // std::partial_sort, min, max
#include <cerrno> /* ENOENT */
#include <climits> /* INT_MAX */
#include <csignal>
#include <cstdint>
#include <cstdlib>
#include <cstring> /* memcpy */
#include <vector>
#ifndef _WIN32
#include <sys/types.h> /* umask() */
#include <sys/stat.h> /* umask() */
#endif
#include <event2/dns.h> /* evdns_base_free() */
#include <event2/event.h>
#include <libutp/utp.h>
// #define TR_SHOW_DEPRECATED
#include "transmission.h"
#include "announcer.h"
#include "bandwidth.h"
#include "blocklist.h"
#include "cache.h"
#include "crypto-utils.h"
#include "error.h"
#include "error-types.h"
#include "fdlimit.h"
#include "file.h"
#include "list.h"
#include "log.h"
#include "net.h"
#include "peer-io.h"
#include "peer-mgr.h"
#include "platform.h" /* tr_lock, tr_getTorrentDir() */
#include "platform-quota.h" /* tr_device_info_free() */
#include "port-forwarding.h"
#include "ptrarray.h"
#include "rpc-server.h"
#include "session.h"
#include "session-id.h"
#include "stats.h"
#include "torrent.h"
#include "tr-assert.h"
#include "tr-dht.h" /* tr_dhtUpkeep() */
#include "tr-udp.h"
#include "tr-utp.h"
#include "tr-lpd.h"
#include "trevent.h"
#include "utils.h"
#include "variant.h"
#include "verify.h"
#include "version.h"
#include "web.h"
enum
{
#ifdef TR_LIGHTWEIGHT
DEFAULT_CACHE_SIZE_MB = 2,
DEFAULT_PREFETCH_ENABLED = false,
#else
DEFAULT_CACHE_SIZE_MB = 4,
DEFAULT_PREFETCH_ENABLED = true,
#endif
SAVE_INTERVAL_SECS = 360
};
#define dbgmsg(...) tr_logAddDeepNamed(nullptr, __VA_ARGS__)
static tr_port getRandomPort(tr_session* s)
{
return tr_rand_int_weak(s->randomPortHigh - s->randomPortLow + 1) + s->randomPortLow;
}
/* Generate a peer id : "-TRxyzb-" + 12 random alphanumeric
characters, where x is the major version number, y is the
minor version number, z is the maintenance number, and b
designates beta (Azureus-style) */
void tr_peerIdInit(uint8_t* buf)
{
int val;
int total = 0;
char const* pool = "0123456789abcdefghijklmnopqrstuvwxyz";
int const base = 36;
memcpy(buf, PEERID_PREFIX, 8);
tr_rand_buffer(buf + 8, 11);
for (int i = 8; i < 19; ++i)
{
val = buf[i] % base;
total += val;
buf[i] = pool[val];
}
val = total % base != 0 ? base - total % base : 0;
buf[19] = pool[val];
buf[20] = '\0';
}
/***
****
***/
tr_encryption_mode tr_sessionGetEncryption(tr_session* session)
{
TR_ASSERT(session != nullptr);
return session->encryptionMode;
}
void tr_sessionSetEncryption(tr_session* session, tr_encryption_mode mode)
{
TR_ASSERT(session != nullptr);
TR_ASSERT(mode == TR_ENCRYPTION_PREFERRED || mode == TR_ENCRYPTION_REQUIRED || mode == TR_CLEAR_PREFERRED);
session->encryptionMode = mode;
}
/***
****
***/
struct tr_bindinfo
{
tr_socket_t socket;
tr_address addr;
struct event* ev;
};
static void close_bindinfo(struct tr_bindinfo* b)
{
if (b != nullptr && b->socket != TR_BAD_SOCKET)
{
event_free(b->ev);
b->ev = nullptr;
tr_netCloseSocket(b->socket);
}
}
static void close_incoming_peer_port(tr_session* session)
{
close_bindinfo(session->bind_ipv4);
close_bindinfo(session->bind_ipv6);
}
static void free_incoming_peer_port(tr_session* session)
{
close_bindinfo(session->bind_ipv4);
tr_free(session->bind_ipv4);
session->bind_ipv4 = nullptr;
close_bindinfo(session->bind_ipv6);
tr_free(session->bind_ipv6);
session->bind_ipv6 = nullptr;
}
static void accept_incoming_peer(evutil_socket_t fd, short what, void* vsession)
{
TR_UNUSED(what);
tr_socket_t clientSocket;
tr_port clientPort;
tr_address clientAddr;
auto* session = static_cast<tr_session*>(vsession);
clientSocket = tr_netAccept(session, fd, &clientAddr, &clientPort);
if (clientSocket != TR_BAD_SOCKET)
{
if (tr_logGetDeepEnabled())
{
char addrstr[TR_ADDRSTRLEN];
tr_address_and_port_to_string(addrstr, sizeof(addrstr), &clientAddr, clientPort);
tr_logAddDeep(
__FILE__,
__LINE__,
nullptr,
"new incoming connection %" PRIdMAX " (%s)",
(intmax_t)clientSocket,
addrstr);
}
tr_peerMgrAddIncoming(session->peerMgr, &clientAddr, clientPort, tr_peer_socket_tcp_create(clientSocket));
}
}
static void open_incoming_peer_port(tr_session* session)
{
struct tr_bindinfo* b;
/* bind an ipv4 port to listen for incoming peers... */
b = session->bind_ipv4;
b->socket = tr_netBindTCP(&b->addr, session->private_peer_port, false);
if (b->socket != TR_BAD_SOCKET)
{
b->ev = event_new(session->event_base, b->socket, EV_READ | EV_PERSIST, accept_incoming_peer, session);
event_add(b->ev, nullptr);
}
/* and do the exact same thing for ipv6, if it's supported... */
if (tr_net_hasIPv6(session->private_peer_port))
{
b = session->bind_ipv6;
b->socket = tr_netBindTCP(&b->addr, session->private_peer_port, false);
if (b->socket != TR_BAD_SOCKET)
{
b->ev = event_new(session->event_base, b->socket, EV_READ | EV_PERSIST, accept_incoming_peer, session);
event_add(b->ev, nullptr);
}
}
}
tr_address const* tr_sessionGetPublicAddress(tr_session const* session, int tr_af_type, bool* is_default_value)
{
char const* default_value;
struct tr_bindinfo const* bindinfo;
switch (tr_af_type)
{
case TR_AF_INET:
bindinfo = session->bind_ipv4;
default_value = TR_DEFAULT_BIND_ADDRESS_IPV4;
break;
case TR_AF_INET6:
bindinfo = session->bind_ipv6;
default_value = TR_DEFAULT_BIND_ADDRESS_IPV6;
break;
default:
bindinfo = nullptr;
default_value = "";
break;
}
if (is_default_value != nullptr && bindinfo != nullptr)
{
*is_default_value = tr_strcmp0(default_value, tr_address_to_string(&bindinfo->addr)) == 0;
}
return bindinfo != nullptr ? &bindinfo->addr : nullptr;
}
/***
****
***/
#ifdef TR_LIGHTWEIGHT
#define TR_DEFAULT_ENCRYPTION TR_CLEAR_PREFERRED
#else
#define TR_DEFAULT_ENCRYPTION TR_ENCRYPTION_PREFERRED
#endif
static int parse_tos(char const* tos)
{
char* p;
int value;
if (evutil_ascii_strcasecmp(tos, "") == 0)
{
return 0;
}
if (evutil_ascii_strcasecmp(tos, "default") == 0)
{
return 0;
}
if (evutil_ascii_strcasecmp(tos, "lowcost") == 0)
{
return TR_IPTOS_LOWCOST;
}
if (evutil_ascii_strcasecmp(tos, "mincost") == 0)
{
return TR_IPTOS_LOWCOST;
}
if (evutil_ascii_strcasecmp(tos, "throughput") == 0)
{
return TR_IPTOS_THRUPUT;
}
if (evutil_ascii_strcasecmp(tos, "reliability") == 0)
{
return TR_IPTOS_RELIABLE;
}
if (evutil_ascii_strcasecmp(tos, "lowdelay") == 0)
{
return TR_IPTOS_LOWDELAY;
}
value = strtol(tos, &p, 0);
if (p == nullptr || p == tos)
{
return 0;
}
return value;
}
static char const* format_tos(int value)
{
static char buf[8];
switch (value)
{
case 0:
return "default";
case TR_IPTOS_LOWCOST:
return "lowcost";
case TR_IPTOS_THRUPUT:
return "throughput";
case TR_IPTOS_RELIABLE:
return "reliability";
case TR_IPTOS_LOWDELAY:
return "lowdelay";
default:
tr_snprintf(buf, 8, "%d", value);
return buf;
}
}
void tr_sessionGetDefaultSettings(tr_variant* d)
{
TR_ASSERT(tr_variantIsDict(d));
tr_variantDictReserve(d, 63);
tr_variantDictAddBool(d, TR_KEY_blocklist_enabled, false);
tr_variantDictAddStr(d, TR_KEY_blocklist_url, "http://www.example.com/blocklist");
tr_variantDictAddInt(d, TR_KEY_cache_size_mb, DEFAULT_CACHE_SIZE_MB);
tr_variantDictAddBool(d, TR_KEY_dht_enabled, true);
tr_variantDictAddBool(d, TR_KEY_utp_enabled, true);
tr_variantDictAddBool(d, TR_KEY_lpd_enabled, false);
tr_variantDictAddStr(d, TR_KEY_download_dir, tr_getDefaultDownloadDir());
tr_variantDictAddInt(d, TR_KEY_speed_limit_down, 100);
tr_variantDictAddBool(d, TR_KEY_speed_limit_down_enabled, false);
tr_variantDictAddInt(d, TR_KEY_encryption, TR_DEFAULT_ENCRYPTION);
tr_variantDictAddInt(d, TR_KEY_idle_seeding_limit, 30);
tr_variantDictAddBool(d, TR_KEY_idle_seeding_limit_enabled, false);
tr_variantDictAddStr(d, TR_KEY_incomplete_dir, tr_getDefaultDownloadDir());
tr_variantDictAddBool(d, TR_KEY_incomplete_dir_enabled, false);
tr_variantDictAddInt(d, TR_KEY_message_level, TR_LOG_INFO);
tr_variantDictAddInt(d, TR_KEY_download_queue_size, 5);
tr_variantDictAddBool(d, TR_KEY_download_queue_enabled, true);
tr_variantDictAddInt(d, TR_KEY_peer_limit_global, atoi(TR_DEFAULT_PEER_LIMIT_GLOBAL_STR));
tr_variantDictAddInt(d, TR_KEY_peer_limit_per_torrent, atoi(TR_DEFAULT_PEER_LIMIT_TORRENT_STR));
tr_variantDictAddInt(d, TR_KEY_peer_port, atoi(TR_DEFAULT_PEER_PORT_STR));
tr_variantDictAddBool(d, TR_KEY_peer_port_random_on_start, false);
tr_variantDictAddInt(d, TR_KEY_peer_port_random_low, 49152);
tr_variantDictAddInt(d, TR_KEY_peer_port_random_high, 65535);
tr_variantDictAddStr(d, TR_KEY_peer_socket_tos, TR_DEFAULT_PEER_SOCKET_TOS_STR);
tr_variantDictAddBool(d, TR_KEY_pex_enabled, true);
tr_variantDictAddBool(d, TR_KEY_port_forwarding_enabled, true);
tr_variantDictAddInt(d, TR_KEY_preallocation, TR_PREALLOCATE_SPARSE);
tr_variantDictAddBool(d, TR_KEY_prefetch_enabled, DEFAULT_PREFETCH_ENABLED);
tr_variantDictAddInt(d, TR_KEY_peer_id_ttl_hours, 6);
tr_variantDictAddBool(d, TR_KEY_queue_stalled_enabled, true);
tr_variantDictAddInt(d, TR_KEY_queue_stalled_minutes, 30);
tr_variantDictAddReal(d, TR_KEY_ratio_limit, 2.0);
tr_variantDictAddBool(d, TR_KEY_ratio_limit_enabled, false);
tr_variantDictAddBool(d, TR_KEY_rename_partial_files, true);
tr_variantDictAddBool(d, TR_KEY_rpc_authentication_required, false);
tr_variantDictAddStr(d, TR_KEY_rpc_bind_address, "0.0.0.0");
tr_variantDictAddBool(d, TR_KEY_rpc_enabled, false);
tr_variantDictAddStr(d, TR_KEY_rpc_password, "");
tr_variantDictAddStr(d, TR_KEY_rpc_username, "");
tr_variantDictAddStr(d, TR_KEY_rpc_whitelist, TR_DEFAULT_RPC_WHITELIST);
tr_variantDictAddBool(d, TR_KEY_rpc_whitelist_enabled, true);
tr_variantDictAddStr(d, TR_KEY_rpc_host_whitelist, TR_DEFAULT_RPC_HOST_WHITELIST);
tr_variantDictAddBool(d, TR_KEY_rpc_host_whitelist_enabled, true);
tr_variantDictAddInt(d, TR_KEY_rpc_port, TR_DEFAULT_RPC_PORT);
tr_variantDictAddStr(d, TR_KEY_rpc_url, TR_DEFAULT_RPC_URL_STR);
tr_variantDictAddBool(d, TR_KEY_scrape_paused_torrents_enabled, true);
tr_variantDictAddStr(d, TR_KEY_script_torrent_done_filename, "");
tr_variantDictAddBool(d, TR_KEY_script_torrent_done_enabled, false);
tr_variantDictAddInt(d, TR_KEY_seed_queue_size, 10);
tr_variantDictAddBool(d, TR_KEY_seed_queue_enabled, false);
tr_variantDictAddBool(d, TR_KEY_alt_speed_enabled, false);
tr_variantDictAddInt(d, TR_KEY_alt_speed_up, 50); /* half the regular */
tr_variantDictAddInt(d, TR_KEY_alt_speed_down, 50); /* half the regular */
tr_variantDictAddInt(d, TR_KEY_alt_speed_time_begin, 540); /* 9am */
tr_variantDictAddBool(d, TR_KEY_alt_speed_time_enabled, false);
tr_variantDictAddInt(d, TR_KEY_alt_speed_time_end, 1020); /* 5pm */
tr_variantDictAddInt(d, TR_KEY_alt_speed_time_day, TR_SCHED_ALL);
tr_variantDictAddInt(d, TR_KEY_speed_limit_up, 100);
tr_variantDictAddBool(d, TR_KEY_speed_limit_up_enabled, false);
tr_variantDictAddInt(d, TR_KEY_umask, 022);
tr_variantDictAddInt(d, TR_KEY_upload_slots_per_torrent, 14);
tr_variantDictAddStr(d, TR_KEY_bind_address_ipv4, TR_DEFAULT_BIND_ADDRESS_IPV4);
tr_variantDictAddStr(d, TR_KEY_bind_address_ipv6, TR_DEFAULT_BIND_ADDRESS_IPV6);
tr_variantDictAddBool(d, TR_KEY_start_added_torrents, true);
tr_variantDictAddBool(d, TR_KEY_trash_original_torrent_files, false);
tr_variantDictAddInt(d, TR_KEY_anti_brute_force_threshold, 100);
tr_variantDictAddBool(d, TR_KEY_anti_brute_force_enabled, true);
}
void tr_sessionGetSettings(tr_session* s, tr_variant* d)
{
TR_ASSERT(tr_variantIsDict(d));
tr_variantDictReserve(d, 63);
tr_variantDictAddBool(d, TR_KEY_blocklist_enabled, tr_blocklistIsEnabled(s));
tr_variantDictAddStr(d, TR_KEY_blocklist_url, tr_blocklistGetURL(s));
tr_variantDictAddInt(d, TR_KEY_cache_size_mb, tr_sessionGetCacheLimit_MB(s));
tr_variantDictAddBool(d, TR_KEY_dht_enabled, s->isDHTEnabled);
tr_variantDictAddBool(d, TR_KEY_utp_enabled, s->isUTPEnabled);
tr_variantDictAddBool(d, TR_KEY_lpd_enabled, s->isLPDEnabled);
tr_variantDictAddStr(d, TR_KEY_download_dir, tr_sessionGetDownloadDir(s));
tr_variantDictAddInt(d, TR_KEY_download_queue_size, tr_sessionGetQueueSize(s, TR_DOWN));
tr_variantDictAddBool(d, TR_KEY_download_queue_enabled, tr_sessionGetQueueEnabled(s, TR_DOWN));
tr_variantDictAddInt(d, TR_KEY_speed_limit_down, tr_sessionGetSpeedLimit_KBps(s, TR_DOWN));
tr_variantDictAddBool(d, TR_KEY_speed_limit_down_enabled, tr_sessionIsSpeedLimited(s, TR_DOWN));
tr_variantDictAddInt(d, TR_KEY_encryption, s->encryptionMode);
tr_variantDictAddInt(d, TR_KEY_idle_seeding_limit, tr_sessionGetIdleLimit(s));
tr_variantDictAddBool(d, TR_KEY_idle_seeding_limit_enabled, tr_sessionIsIdleLimited(s));
tr_variantDictAddStr(d, TR_KEY_incomplete_dir, tr_sessionGetIncompleteDir(s));
tr_variantDictAddBool(d, TR_KEY_incomplete_dir_enabled, tr_sessionIsIncompleteDirEnabled(s));
tr_variantDictAddInt(d, TR_KEY_message_level, tr_logGetLevel());
tr_variantDictAddInt(d, TR_KEY_peer_limit_global, s->peerLimit);
tr_variantDictAddInt(d, TR_KEY_peer_limit_per_torrent, s->peerLimitPerTorrent);
tr_variantDictAddInt(d, TR_KEY_peer_port, tr_sessionGetPeerPort(s));
tr_variantDictAddBool(d, TR_KEY_peer_port_random_on_start, s->isPortRandom);
tr_variantDictAddInt(d, TR_KEY_peer_port_random_low, s->randomPortLow);
tr_variantDictAddInt(d, TR_KEY_peer_port_random_high, s->randomPortHigh);
tr_variantDictAddStr(d, TR_KEY_peer_socket_tos, format_tos(s->peerSocketTOS));
tr_variantDictAddStr(d, TR_KEY_peer_congestion_algorithm, s->peer_congestion_algorithm);
tr_variantDictAddBool(d, TR_KEY_pex_enabled, s->isPexEnabled);
tr_variantDictAddBool(d, TR_KEY_port_forwarding_enabled, tr_sessionIsPortForwardingEnabled(s));
tr_variantDictAddInt(d, TR_KEY_preallocation, s->preallocationMode);
tr_variantDictAddBool(d, TR_KEY_prefetch_enabled, s->isPrefetchEnabled);
tr_variantDictAddInt(d, TR_KEY_peer_id_ttl_hours, s->peer_id_ttl_hours);
tr_variantDictAddBool(d, TR_KEY_queue_stalled_enabled, tr_sessionGetQueueStalledEnabled(s));
tr_variantDictAddInt(d, TR_KEY_queue_stalled_minutes, tr_sessionGetQueueStalledMinutes(s));
tr_variantDictAddReal(d, TR_KEY_ratio_limit, s->desiredRatio);
tr_variantDictAddBool(d, TR_KEY_ratio_limit_enabled, s->isRatioLimited);
tr_variantDictAddBool(d, TR_KEY_rename_partial_files, tr_sessionIsIncompleteFileNamingEnabled(s));
tr_variantDictAddBool(d, TR_KEY_rpc_authentication_required, tr_sessionIsRPCPasswordEnabled(s));
tr_variantDictAddStr(d, TR_KEY_rpc_bind_address, tr_sessionGetRPCBindAddress(s));
tr_variantDictAddBool(d, TR_KEY_rpc_enabled, tr_sessionIsRPCEnabled(s));
tr_variantDictAddStr(d, TR_KEY_rpc_password, tr_sessionGetRPCPassword(s));
tr_variantDictAddInt(d, TR_KEY_rpc_port, tr_sessionGetRPCPort(s));
tr_variantDictAddStr(d, TR_KEY_rpc_url, tr_sessionGetRPCUrl(s));
tr_variantDictAddStr(d, TR_KEY_rpc_username, tr_sessionGetRPCUsername(s));
tr_variantDictAddStr(d, TR_KEY_rpc_whitelist, tr_sessionGetRPCWhitelist(s));
tr_variantDictAddBool(d, TR_KEY_rpc_whitelist_enabled, tr_sessionGetRPCWhitelistEnabled(s));
tr_variantDictAddBool(d, TR_KEY_scrape_paused_torrents_enabled, s->scrapePausedTorrents);
tr_variantDictAddBool(d, TR_KEY_script_torrent_done_enabled, tr_sessionIsTorrentDoneScriptEnabled(s));
tr_variantDictAddStr(d, TR_KEY_script_torrent_done_filename, tr_sessionGetTorrentDoneScript(s));
tr_variantDictAddInt(d, TR_KEY_seed_queue_size, tr_sessionGetQueueSize(s, TR_UP));
tr_variantDictAddBool(d, TR_KEY_seed_queue_enabled, tr_sessionGetQueueEnabled(s, TR_UP));
tr_variantDictAddBool(d, TR_KEY_alt_speed_enabled, tr_sessionUsesAltSpeed(s));
tr_variantDictAddInt(d, TR_KEY_alt_speed_up, tr_sessionGetAltSpeed_KBps(s, TR_UP));
tr_variantDictAddInt(d, TR_KEY_alt_speed_down, tr_sessionGetAltSpeed_KBps(s, TR_DOWN));
tr_variantDictAddInt(d, TR_KEY_alt_speed_time_begin, tr_sessionGetAltSpeedBegin(s));
tr_variantDictAddBool(d, TR_KEY_alt_speed_time_enabled, tr_sessionUsesAltSpeedTime(s));
tr_variantDictAddInt(d, TR_KEY_alt_speed_time_end, tr_sessionGetAltSpeedEnd(s));
tr_variantDictAddInt(d, TR_KEY_alt_speed_time_day, tr_sessionGetAltSpeedDay(s));
tr_variantDictAddInt(d, TR_KEY_speed_limit_up, tr_sessionGetSpeedLimit_KBps(s, TR_UP));
tr_variantDictAddBool(d, TR_KEY_speed_limit_up_enabled, tr_sessionIsSpeedLimited(s, TR_UP));
tr_variantDictAddInt(d, TR_KEY_umask, s->umask);
tr_variantDictAddInt(d, TR_KEY_upload_slots_per_torrent, s->uploadSlotsPerTorrent);
tr_variantDictAddStr(d, TR_KEY_bind_address_ipv4, tr_address_to_string(&s->bind_ipv4->addr));
tr_variantDictAddStr(d, TR_KEY_bind_address_ipv6, tr_address_to_string(&s->bind_ipv6->addr));
tr_variantDictAddBool(d, TR_KEY_start_added_torrents, !tr_sessionGetPaused(s));
tr_variantDictAddBool(d, TR_KEY_trash_original_torrent_files, tr_sessionGetDeleteSource(s));
tr_variantDictAddInt(d, TR_KEY_anti_brute_force_threshold, tr_sessionGetAntiBruteForceThreshold(s));
tr_variantDictAddBool(d, TR_KEY_anti_brute_force_enabled, tr_sessionGetAntiBruteForceEnabled(s));
}
bool tr_sessionLoadSettings(tr_variant* dict, char const* configDir, char const* appName)
{
TR_ASSERT(tr_variantIsDict(dict));
char* filename;
tr_variant oldDict;
tr_variant fileSettings;
bool success;
tr_error* error = nullptr;
/* initializing the defaults: caller may have passed in some app-level defaults.
* preserve those and use the session defaults to fill in any missing gaps. */
oldDict = *dict;
tr_variantInitDict(dict, 0);
tr_sessionGetDefaultSettings(dict);
tr_variantMergeDicts(dict, &oldDict);
tr_variantFree(&oldDict);
/* if caller didn't specify a config dir, use the default */
if (tr_str_is_empty(configDir))
{
configDir = tr_getDefaultConfigDir(appName);
}
/* file settings override the defaults */
filename = tr_buildPath(configDir, "settings.json", nullptr);
if (tr_variantFromFile(&fileSettings, TR_VARIANT_FMT_JSON, filename, &error))
{
tr_variantMergeDicts(dict, &fileSettings);
tr_variantFree(&fileSettings);
success = true;
}
else
{
success = TR_ERROR_IS_ENOENT(error->code);
tr_error_free(error);
}
/* cleanup */
tr_free(filename);
return success;
}
void tr_sessionSaveSettings(tr_session* session, char const* configDir, tr_variant const* clientSettings)
{
TR_ASSERT(tr_variantIsDict(clientSettings));
tr_variant settings;
char* filename = tr_buildPath(configDir, "settings.json", nullptr);
tr_variantInitDict(&settings, 0);
/* the existing file settings are the fallback values */
{
tr_variant fileSettings;
if (tr_variantFromFile(&fileSettings, TR_VARIANT_FMT_JSON, filename, nullptr))
{
tr_variantMergeDicts(&settings, &fileSettings);
tr_variantFree(&fileSettings);
}
}
/* the client's settings override the file settings */
tr_variantMergeDicts(&settings, clientSettings);
/* the session's true values override the file & client settings */
{
tr_variant sessionSettings;
tr_variantInitDict(&sessionSettings, 0);
tr_sessionGetSettings(session, &sessionSettings);
tr_variantMergeDicts(&settings, &sessionSettings);
tr_variantFree(&sessionSettings);
}
/* save the result */
tr_variantToFile(&settings, TR_VARIANT_FMT_JSON, filename);
/* cleanup */
tr_free(filename);
tr_variantFree(&settings);
}
/***
****
***/
/**
* Periodically save the .resume files of any torrents whose
* status has recently changed. This prevents loss of metadata
* in the case of a crash, unclean shutdown, clumsy user, etc.
*/
static void onSaveTimer(evutil_socket_t fd, short what, void* vsession)
{
TR_UNUSED(fd);
TR_UNUSED(what);
tr_torrent* tor = nullptr;
auto* session = static_cast<tr_session*>(vsession);
if (tr_cacheFlushDone(session->cache) != 0)
{
tr_logAddError("Error while flushing completed pieces from cache");
}
while ((tor = tr_torrentNext(session, tor)) != nullptr)
{
tr_torrentSave(tor);
}
tr_statsSaveDirty(session);
tr_timerAdd(session->saveTimer, SAVE_INTERVAL_SECS, 0);
}
/***
****
***/
static void tr_sessionInitImpl(void*);
struct init_data
{
bool done;
bool messageQueuingEnabled;
tr_session* session;
char const* configDir;
tr_variant* clientSettings;
};
tr_session* tr_sessionInit(char const* configDir, bool messageQueuingEnabled, tr_variant* clientSettings)
{
TR_ASSERT(tr_variantIsDict(clientSettings));
int64_t i;
tr_session* session;
struct init_data data;
tr_timeUpdate(time(nullptr));
/* initialize the bare skeleton of the session object */
session = tr_new0(tr_session, 1);
session->udp_socket = TR_BAD_SOCKET;
session->udp6_socket = TR_BAD_SOCKET;
session->lock = tr_lockNew();
session->cache = tr_cacheNew(1024 * 1024 * 2);
session->magicNumber = SESSION_MAGIC_NUMBER;
session->session_id = tr_session_id_new();
session->torrentsSortedByHash = {};
session->torrentsSortedByHashString = {};
session->torrentsSortedById = {};
tr_bandwidthConstruct(&session->bandwidth, session, nullptr);
tr_variantInitList(&session->removedTorrents, 0);
/* nice to start logging at the very beginning */
if (tr_variantDictFindInt(clientSettings, TR_KEY_message_level, &i))
{
tr_logSetLevel(tr_log_level(i));
}
/* start the libtransmission thread */
tr_net_init(); /* must go before tr_eventInit */
tr_eventInit(session);
TR_ASSERT(session->events != nullptr);
/* run the rest in the libtransmission thread */
data.done = false;
data.session = session;
data.configDir = configDir;
data.messageQueuingEnabled = messageQueuingEnabled;
data.clientSettings = clientSettings;
tr_runInEventThread(session, tr_sessionInitImpl, &data);
while (!data.done)
{
tr_wait_msec(50);
}
return session;
}
static void turtleCheckClock(tr_session* s, struct tr_turtle_info* t);
static void onNowTimer(evutil_socket_t fd, short what, void* vsession)
{
TR_UNUSED(fd);
TR_UNUSED(what);
auto* session = static_cast<tr_session*>(vsession);
TR_ASSERT(tr_isSession(session));
TR_ASSERT(session->nowTimer != nullptr);
int usec;
int const min = 100;
int const max = 999999;
struct timeval tv;
tr_torrent* tor = nullptr;
time_t const now = time(nullptr);
/**
*** tr_session things to do once per second
**/
tr_timeUpdate(now);
tr_dhtUpkeep(session);
if (session->turtle.isClockEnabled)
{
turtleCheckClock(session, &session->turtle);
}
while ((tor = tr_torrentNext(session, tor)) != nullptr)
{
if (tor->isRunning)
{
if (tr_torrentIsSeed(tor))
{
++tor->secondsSeeding;
}
else
{
++tor->secondsDownloading;
}
}
}
/**
*** Set the timer
**/
/* schedule the next timer for right after the next second begins */
tr_gettimeofday(&tv);
usec = 1000000 - tv.tv_usec;
if (usec > max)
{
usec = max;
}
if (usec < min)
{
usec = min;
}
tr_timerAdd(session->nowTimer, 0, usec);
}
static void loadBlocklists(tr_session* session);
static void tr_sessionInitImpl(void* vdata)
{
auto* data = static_cast<struct init_data*>(vdata);
tr_variant const* const clientSettings = data->clientSettings;
tr_session* session = data->session;
TR_ASSERT(tr_amInEventThread(session));
TR_ASSERT(tr_variantIsDict(clientSettings));
dbgmsg("tr_sessionInit: the session's top-level bandwidth object is %p", (void*)&session->bandwidth);
tr_variant settings;
tr_variantInitDict(&settings, 0);
tr_sessionGetDefaultSettings(&settings);
tr_variantMergeDicts(&settings, clientSettings);
TR_ASSERT(session->event_base != nullptr);
session->nowTimer = evtimer_new(session->event_base, onNowTimer, session);
onNowTimer(0, 0, session);
#ifndef _WIN32
/* Don't exit when writing on a broken socket */
signal(SIGPIPE, SIG_IGN);
#endif
tr_logSetQueueEnabled(data->messageQueuingEnabled);
tr_setConfigDir(session, data->configDir);
session->peerMgr = tr_peerMgrNew(session);
session->shared = tr_sharedInit(session);
/**
*** Blocklist
**/
{
char* filename = tr_buildPath(session->configDir, "blocklists", nullptr);
tr_sys_dir_create(filename, TR_SYS_DIR_CREATE_PARENTS, 0777, nullptr);
tr_free(filename);
loadBlocklists(session);
}
TR_ASSERT(tr_isSession(session));
session->saveTimer = evtimer_new(session->event_base, onSaveTimer, session);
tr_timerAdd(session->saveTimer, SAVE_INTERVAL_SECS, 0);
tr_announcerInit(session);
/* first %s is the application name
second %s is the version number */
tr_logAddInfo(_("%s %s started"), TR_NAME, LONG_VERSION_STRING);
tr_statsInit(session);
tr_sessionSet(session, &settings);
tr_udpInit(session);
if (session->isLPDEnabled)
{
tr_lpdInit(session, &session->bind_ipv4->addr);
}
/* cleanup */
tr_variantFree(&settings);
data->done = true;
}
static void turtleBootstrap(tr_session*, struct tr_turtle_info*);
static void setPeerPort(tr_session* session, tr_port port);
static void sessionSetImpl(void* vdata)
{
auto* data = static_cast<struct init_data*>(vdata);
tr_session* session = data->session;
tr_variant* settings = data->clientSettings;
TR_ASSERT(tr_isSession(session));
TR_ASSERT(tr_variantIsDict(settings));
TR_ASSERT(tr_amInEventThread(session));
int64_t i;
double d;
bool boolVal;
char const* strVal;
struct tr_bindinfo b;
struct tr_turtle_info* turtle = &session->turtle;
if (tr_variantDictFindInt(settings, TR_KEY_message_level, &i))
{
tr_logSetLevel(tr_log_level(i));
}
#ifndef _WIN32
if (tr_variantDictFindInt(settings, TR_KEY_umask, &i))
{
session->umask = (mode_t)i;
umask(session->umask);
}
#endif
/* misc features */
if (tr_variantDictFindInt(settings, TR_KEY_cache_size_mb, &i))
{
tr_sessionSetCacheLimit_MB(session, i);
}
if (tr_variantDictFindInt(settings, TR_KEY_peer_limit_per_torrent, &i))
{
tr_sessionSetPeerLimitPerTorrent(session, i);
}
if (tr_variantDictFindBool(settings, TR_KEY_pex_enabled, &boolVal))
{
tr_sessionSetPexEnabled(session, boolVal);
}
if (tr_variantDictFindBool(settings, TR_KEY_dht_enabled, &boolVal))
{
tr_sessionSetDHTEnabled(session, boolVal);
}
if (tr_variantDictFindBool(settings, TR_KEY_utp_enabled, &boolVal))
{
tr_sessionSetUTPEnabled(session, boolVal);
}
if (tr_variantDictFindBool(settings, TR_KEY_lpd_enabled, &boolVal))
{
tr_sessionSetLPDEnabled(session, boolVal);
}
if (tr_variantDictFindInt(settings, TR_KEY_encryption, &i))
{
tr_sessionSetEncryption(session, tr_encryption_mode(i));
}
if (tr_variantDictFindStr(settings, TR_KEY_peer_socket_tos, &strVal, nullptr))
{
session->peerSocketTOS = parse_tos(strVal);
}
if (tr_variantDictFindStr(settings, TR_KEY_peer_congestion_algorithm, &strVal, nullptr))
{
session->peer_congestion_algorithm = tr_strdup(strVal);
}
else
{
session->peer_congestion_algorithm = tr_strdup("");
}
if (tr_variantDictFindBool(settings, TR_KEY_blocklist_enabled, &boolVal))
{
tr_blocklistSetEnabled(session, boolVal);
}
if (tr_variantDictFindStr(settings, TR_KEY_blocklist_url, &strVal, nullptr))
{
tr_blocklistSetURL(session, strVal);
}
if (tr_variantDictFindBool(settings, TR_KEY_start_added_torrents, &boolVal))
{
tr_sessionSetPaused(session, !boolVal);
}
if (tr_variantDictFindBool(settings, TR_KEY_trash_original_torrent_files, &boolVal))
{
tr_sessionSetDeleteSource(session, boolVal);
}
if (tr_variantDictFindInt(settings, TR_KEY_peer_id_ttl_hours, &i))
{
session->peer_id_ttl_hours = i;
}
/* torrent queues */
if (tr_variantDictFindInt(settings, TR_KEY_queue_stalled_minutes, &i))
{
tr_sessionSetQueueStalledMinutes(session, i);
}
if (tr_variantDictFindBool(settings, TR_KEY_queue_stalled_enabled, &boolVal))
{
tr_sessionSetQueueStalledEnabled(session, boolVal);
}
if (tr_variantDictFindInt(settings, TR_KEY_download_queue_size, &i))
{
tr_sessionSetQueueSize(session, TR_DOWN, i);
}
if (tr_variantDictFindBool(settings, TR_KEY_download_queue_enabled, &boolVal))
{
tr_sessionSetQueueEnabled(session, TR_DOWN, boolVal);
}
if (tr_variantDictFindInt(settings, TR_KEY_seed_queue_size, &i))
{
tr_sessionSetQueueSize(session, TR_UP, i);
}
if (tr_variantDictFindBool(settings, TR_KEY_seed_queue_enabled, &boolVal))
{
tr_sessionSetQueueEnabled(session, TR_UP, boolVal);
}
/* files and directories */
if (tr_variantDictFindBool(settings, TR_KEY_prefetch_enabled, &boolVal))
{
session->isPrefetchEnabled = boolVal;
}
if (tr_variantDictFindInt(settings, TR_KEY_preallocation, &i))
{
session->preallocationMode = tr_preallocation_mode(i);
}
if (tr_variantDictFindStr(settings, TR_KEY_download_dir, &strVal, nullptr))
{
tr_sessionSetDownloadDir(session, strVal);
}
if (tr_variantDictFindStr(settings, TR_KEY_incomplete_dir, &strVal, nullptr))
{
tr_sessionSetIncompleteDir(session, strVal);
}
if (tr_variantDictFindBool(settings, TR_KEY_incomplete_dir_enabled, &boolVal))
{
tr_sessionSetIncompleteDirEnabled(session, boolVal);
}
if (tr_variantDictFindBool(settings, TR_KEY_rename_partial_files, &boolVal))
{
tr_sessionSetIncompleteFileNamingEnabled(session, boolVal);
}
/* rpc server */
if (session->rpcServer != nullptr) /* close the old one */
{
tr_rpcClose(&session->rpcServer);
}
session->rpcServer = tr_rpcInit(session, settings);
/* public addresses */
free_incoming_peer_port(session);
if (!tr_variantDictFindStr(settings, TR_KEY_bind_address_ipv4, &strVal, nullptr) ||
!tr_address_from_string(&b.addr, strVal) || b.addr.type != TR_AF_INET)
{
b.addr = tr_inaddr_any;
}
b.socket = TR_BAD_SOCKET;
session->bind_ipv4 = static_cast<struct tr_bindinfo*>(tr_memdup(&b, sizeof(struct tr_bindinfo)));
if (!tr_variantDictFindStr(settings, TR_KEY_bind_address_ipv6, &strVal, nullptr) ||
!tr_address_from_string(&b.addr, strVal) || b.addr.type != TR_AF_INET6)
{
b.addr = tr_in6addr_any;
}
b.socket = TR_BAD_SOCKET;
session->bind_ipv6 = static_cast<tr_bindinfo*>(tr_memdup(&b, sizeof(struct tr_bindinfo)));
/* incoming peer port */
if (tr_variantDictFindInt(settings, TR_KEY_peer_port_random_low, &i))
{
session->randomPortLow = i;
}
if (tr_variantDictFindInt(settings, TR_KEY_peer_port_random_high, &i))
{
session->randomPortHigh = i;
}
if (tr_variantDictFindBool(settings, TR_KEY_peer_port_random_on_start, &boolVal))
{
tr_sessionSetPeerPortRandomOnStart(session, boolVal);
}
if (!tr_variantDictFindInt(settings, TR_KEY_peer_port, &i))
{
i = session->private_peer_port;
}
setPeerPort(session, boolVal ? getRandomPort(session) : i);
if (tr_variantDictFindBool(settings, TR_KEY_port_forwarding_enabled, &boolVal))
{
tr_sessionSetPortForwardingEnabled(session, boolVal);
}
if (tr_variantDictFindInt(settings, TR_KEY_peer_limit_global, &i))
{
session->peerLimit = i;
}
/**
**/
if (tr_variantDictFindInt(settings, TR_KEY_upload_slots_per_torrent, &i))
{
session->uploadSlotsPerTorrent = i;
}
if (tr_variantDictFindInt(settings, TR_KEY_speed_limit_up, &i))
{
tr_sessionSetSpeedLimit_KBps(session, TR_UP, i);
}
if (tr_variantDictFindBool(settings, TR_KEY_speed_limit_up_enabled, &boolVal))
{
tr_sessionLimitSpeed(session, TR_UP, boolVal);
}
if (tr_variantDictFindInt(settings, TR_KEY_speed_limit_down, &i))
{
tr_sessionSetSpeedLimit_KBps(session, TR_DOWN, i);
}
if (tr_variantDictFindBool(settings, TR_KEY_speed_limit_down_enabled, &boolVal))
{
tr_sessionLimitSpeed(session, TR_DOWN, boolVal);
}
if (tr_variantDictFindReal(settings, TR_KEY_ratio_limit, &d))
{
tr_sessionSetRatioLimit(session, d);
}
if (tr_variantDictFindBool(settings, TR_KEY_ratio_limit_enabled, &boolVal))
{
tr_sessionSetRatioLimited(session, boolVal);
}
if (tr_variantDictFindInt(settings, TR_KEY_idle_seeding_limit, &i))
{
tr_sessionSetIdleLimit(session, i);
}
if (tr_variantDictFindBool(settings, TR_KEY_idle_seeding_limit_enabled, &boolVal))
{
tr_sessionSetIdleLimited(session, boolVal);
}
/**
*** Turtle Mode
**/
/* update the turtle mode's fields */
if (tr_variantDictFindInt(settings, TR_KEY_alt_speed_up, &i))
{
turtle->speedLimit_Bps[TR_UP] = toSpeedBytes(i);
}
if (tr_variantDictFindInt(settings, TR_KEY_alt_speed_down, &i))
{
turtle->speedLimit_Bps[TR_DOWN] = toSpeedBytes(i);
}
if (tr_variantDictFindInt(settings, TR_KEY_alt_speed_time_begin, &i))
{
turtle->beginMinute = i;
}
if (tr_variantDictFindInt(settings, TR_KEY_alt_speed_time_end, &i))
{
turtle->endMinute = i;
}
if (tr_variantDictFindInt(settings, TR_KEY_alt_speed_time_day, &i))
{
turtle->days = tr_sched_day(i);
}
if (tr_variantDictFindBool(settings, TR_KEY_alt_speed_time_enabled, &boolVal))
{
turtle->isClockEnabled = boolVal;
}
if (tr_variantDictFindBool(settings, TR_KEY_alt_speed_enabled, &boolVal))
{
turtle->isEnabled = boolVal;
}
turtleBootstrap(session, turtle);
/**
*** Scripts
**/
if (tr_variantDictFindBool(settings, TR_KEY_script_torrent_done_enabled, &boolVal))
{
tr_sessionSetTorrentDoneScriptEnabled(session, boolVal);
}
if (tr_variantDictFindStr(settings, TR_KEY_script_torrent_done_filename, &strVal, nullptr))
{
tr_sessionSetTorrentDoneScript(session, strVal);
}
if (tr_variantDictFindBool(settings, TR_KEY_scrape_paused_torrents_enabled, &boolVal))
{
session->scrapePausedTorrents = boolVal;
}
/**
*** BruteForce
**/
if (tr_variantDictFindInt(settings, TR_KEY_anti_brute_force_threshold, &i))
{
tr_sessionSetAntiBruteForceThreshold(session, i);
}
if (tr_variantDictFindBool(settings, TR_KEY_anti_brute_force_enabled, &boolVal))
{
tr_sessionSetAntiBruteForceEnabled(session, boolVal);
}
data->done = true;
}
void tr_sessionSet(tr_session* session, tr_variant* settings)
{
struct init_data data;
data.done = false;
data.session = session;
data.clientSettings = settings;
/* run the rest in the libtransmission thread */
tr_runInEventThread(session, sessionSetImpl, &data);
while (!data.done)
{
tr_wait_msec(100);
}
}
/***
****
***/
void tr_sessionSetDownloadDir(tr_session* session, char const* dir)
{
TR_ASSERT(tr_isSession(session));
struct tr_device_info* info = nullptr;
if (dir != nullptr)
{
info = tr_device_info_create(dir);
}
tr_device_info_free(session->downloadDir);
session->downloadDir = info;
}
char const* tr_sessionGetDownloadDir(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
char const* dir = nullptr;
if (session != nullptr && session->downloadDir != nullptr)
{
dir = session->downloadDir->path;
}
return dir;
}
int64_t tr_sessionGetDirFreeSpace(tr_session* session, char const* dir)
{
int64_t free_space;
if (tr_strcmp0(dir, tr_sessionGetDownloadDir(session)) == 0)
{
free_space = tr_device_info_get_free_space(session->downloadDir);
}
else
{
free_space = tr_getDirFreeSpace(dir);
}
return free_space;
}
/***
****
***/
void tr_sessionSetIncompleteFileNamingEnabled(tr_session* session, bool b)
{
TR_ASSERT(tr_isSession(session));
session->isIncompleteFileNamingEnabled = b;
}
bool tr_sessionIsIncompleteFileNamingEnabled(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->isIncompleteFileNamingEnabled;
}
/***
****
***/
void tr_sessionSetIncompleteDir(tr_session* session, char const* dir)
{
TR_ASSERT(tr_isSession(session));
if (session->incompleteDir != dir)
{
tr_free(session->incompleteDir);
session->incompleteDir = tr_strdup(dir);
}
}
char const* tr_sessionGetIncompleteDir(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->incompleteDir;
}
void tr_sessionSetIncompleteDirEnabled(tr_session* session, bool b)
{
TR_ASSERT(tr_isSession(session));
session->isIncompleteDirEnabled = b;
}
bool tr_sessionIsIncompleteDirEnabled(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->isIncompleteDirEnabled;
}
/***
****
***/
void tr_sessionLock(tr_session* session)
{
TR_ASSERT(tr_isSession(session));
tr_lockLock(session->lock);
}
void tr_sessionUnlock(tr_session* session)
{
TR_ASSERT(tr_isSession(session));
tr_lockUnlock(session->lock);
}
bool tr_sessionIsLocked(tr_session const* session)
{
return tr_isSession(session) && tr_lockHave(session->lock);
}
/***
**** Peer Port
***/
static void peerPortChanged(void* vsession)
{
auto* session = static_cast<tr_session*>(vsession);
TR_ASSERT(tr_isSession(session));
tr_torrent* tor = nullptr;
close_incoming_peer_port(session);
open_incoming_peer_port(session);
tr_sharedPortChanged(session);
while ((tor = tr_torrentNext(session, tor)) != nullptr)
{
tr_torrentChangeMyPort(tor);
}
}
static void setPeerPort(tr_session* session, tr_port port)
{
session->private_peer_port = port;
session->public_peer_port = port;
tr_runInEventThread(session, peerPortChanged, session);
}
void tr_sessionSetPeerPort(tr_session* session, tr_port port)
{
if (tr_isSession(session) && session->private_peer_port != port)
{
setPeerPort(session, port);
}
}
tr_port tr_sessionGetPeerPort(tr_session const* session)
{
return tr_isSession(session) ? session->private_peer_port : 0;
}
tr_port tr_sessionSetPeerPortRandom(tr_session* session)
{
TR_ASSERT(tr_isSession(session));
tr_sessionSetPeerPort(session, getRandomPort(session));
return session->private_peer_port;
}
void tr_sessionSetPeerPortRandomOnStart(tr_session* session, bool random)
{
TR_ASSERT(tr_isSession(session));
session->isPortRandom = random;
}
bool tr_sessionGetPeerPortRandomOnStart(tr_session* session)
{
TR_ASSERT(tr_isSession(session));
return session->isPortRandom;
}
tr_port_forwarding tr_sessionGetPortForwarding(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return tr_port_forwarding(tr_sharedTraversalStatus(session->shared));
}
/***
****
***/
void tr_sessionSetRatioLimited(tr_session* session, bool isLimited)
{
TR_ASSERT(tr_isSession(session));
session->isRatioLimited = isLimited;
}
void tr_sessionSetRatioLimit(tr_session* session, double desiredRatio)
{
TR_ASSERT(tr_isSession(session));
session->desiredRatio = desiredRatio;
}
bool tr_sessionIsRatioLimited(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->isRatioLimited;
}
double tr_sessionGetRatioLimit(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->desiredRatio;
}
/***
****
***/
void tr_sessionSetIdleLimited(tr_session* session, bool isLimited)
{
TR_ASSERT(tr_isSession(session));
session->isIdleLimited = isLimited;
}
void tr_sessionSetIdleLimit(tr_session* session, uint16_t idleMinutes)
{
TR_ASSERT(tr_isSession(session));
session->idleLimitMinutes = idleMinutes;
}
bool tr_sessionIsIdleLimited(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->isIdleLimited;
}
uint16_t tr_sessionGetIdleLimit(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->idleLimitMinutes;
}
/***
****
**** SPEED LIMITS
****
***/
bool tr_sessionGetActiveSpeedLimit_Bps(tr_session const* session, tr_direction dir, unsigned int* setme_Bps)
{
bool isLimited = true;
if (!tr_isSession(session))
{
return false;
}
if (tr_sessionUsesAltSpeed(session))
{
*setme_Bps = tr_sessionGetAltSpeed_Bps(session, dir);
}
else if (tr_sessionIsSpeedLimited(session, dir))
{
*setme_Bps = tr_sessionGetSpeedLimit_Bps(session, dir);
}
else
{
isLimited = false;
}
return isLimited;
}
bool tr_sessionGetActiveSpeedLimit_KBps(tr_session const* session, tr_direction dir, double* setme_KBps)
{
unsigned int Bps = 0;
bool const is_active = tr_sessionGetActiveSpeedLimit_Bps(session, dir, &Bps);
*setme_KBps = toSpeedKBps(Bps);
return is_active;
}
static void updateBandwidth(tr_session* session, tr_direction dir)
{
unsigned int limit_Bps = 0;
bool const isLimited = tr_sessionGetActiveSpeedLimit_Bps(session, dir, &limit_Bps);
bool const zeroCase = isLimited && limit_Bps == 0;
tr_bandwidthSetLimited(&session->bandwidth, dir, isLimited && !zeroCase);
tr_bandwidthSetDesiredSpeed_Bps(&session->bandwidth, dir, limit_Bps);
}
enum
{
MINUTES_PER_HOUR = 60,
MINUTES_PER_DAY = MINUTES_PER_HOUR * 24,
MINUTES_PER_WEEK = MINUTES_PER_DAY * 7
};
static void turtleUpdateTable(struct tr_turtle_info* t)
{
tr_bitfield* b = &t->minutes;
tr_bitfieldSetHasNone(b);
for (int day = 0; day < 7; ++day)
{
if ((t->days & (1 << day)) != 0)
{
time_t const begin = t->beginMinute;
time_t end = t->endMinute;
if (end <= begin)
{
end += MINUTES_PER_DAY;
}
for (time_t i = begin; i < end; ++i)
{
tr_bitfieldAdd(b, (i + day * MINUTES_PER_DAY) % MINUTES_PER_WEEK);
}
}
}
}
static void altSpeedToggled(void* vsession)
{
auto* session = static_cast<tr_session*>(vsession);
TR_ASSERT(tr_isSession(session));
updateBandwidth(session, TR_UP);
updateBandwidth(session, TR_DOWN);
struct tr_turtle_info* t = &session->turtle;
if (t->callback != nullptr)
{
(*t->callback)(session, t->isEnabled, t->changedByUser, t->callbackUserData);
}
}
static void useAltSpeed(tr_session* s, struct tr_turtle_info* t, bool enabled, bool byUser)
{
TR_ASSERT(tr_isSession(s));
TR_ASSERT(t != nullptr);
if (t->isEnabled != enabled)
{
t->isEnabled = enabled;
t->changedByUser = byUser;
tr_runInEventThread(s, altSpeedToggled, s);
}
}
/**
* @return whether turtle should be on/off according to the scheduler
*/
static bool getInTurtleTime(struct tr_turtle_info const* t)
{
struct tm tm;
size_t minute_of_the_week;
time_t const now = tr_time();
tr_localtime_r(&now, &tm);
minute_of_the_week = tm.tm_wday * MINUTES_PER_DAY + tm.tm_hour * MINUTES_PER_HOUR + tm.tm_min;
if (minute_of_the_week >= MINUTES_PER_WEEK) /* leap minutes? */
{
minute_of_the_week = MINUTES_PER_WEEK - 1;
}
return tr_bitfieldHas(&t->minutes, minute_of_the_week);
}
static inline tr_auto_switch_state_t autoSwitchState(bool enabled)
{
return enabled ? TR_AUTO_SWITCH_ON : TR_AUTO_SWITCH_OFF;
}
static void turtleCheckClock(tr_session* s, struct tr_turtle_info* t)
{
TR_ASSERT(t->isClockEnabled);
bool enabled = getInTurtleTime(t);
tr_auto_switch_state_t newAutoTurtleState = autoSwitchState(enabled);
bool alreadySwitched = t->autoTurtleState == newAutoTurtleState;
if (!alreadySwitched)
{
tr_logAddInfo("Time to turn %s turtle mode!", enabled ? "on" : "off");
t->autoTurtleState = newAutoTurtleState;
useAltSpeed(s, t, enabled, false);
}
}
/* Called after the turtle's fields are loaded from an outside source.
* It initializes the implementation fields
* and turns on turtle mode if the clock settings say to. */
static void turtleBootstrap(tr_session* session, struct tr_turtle_info* turtle)
{
turtle->changedByUser = false;
turtle->autoTurtleState = TR_AUTO_SWITCH_UNUSED;
tr_bitfieldConstruct(&turtle->minutes, MINUTES_PER_WEEK);
turtleUpdateTable(turtle);
if (turtle->isClockEnabled)
{
turtle->isEnabled = getInTurtleTime(turtle);
turtle->autoTurtleState = autoSwitchState(turtle->isEnabled);
}
altSpeedToggled(session);
}
/***
**** Primary session speed limits
***/
void tr_sessionSetSpeedLimit_Bps(tr_session* s, tr_direction d, unsigned int Bps)
{
TR_ASSERT(tr_isSession(s));
TR_ASSERT(tr_isDirection(d));
s->speedLimit_Bps[d] = Bps;
updateBandwidth(s, d);
}
void tr_sessionSetSpeedLimit_KBps(tr_session* s, tr_direction d, unsigned int KBps)
{
tr_sessionSetSpeedLimit_Bps(s, d, toSpeedBytes(KBps));
}
unsigned int tr_sessionGetSpeedLimit_Bps(tr_session const* s, tr_direction d)
{
TR_ASSERT(tr_isSession(s));
TR_ASSERT(tr_isDirection(d));
return s->speedLimit_Bps[d];
}
unsigned int tr_sessionGetSpeedLimit_KBps(tr_session const* s, tr_direction d)
{
return toSpeedKBps(tr_sessionGetSpeedLimit_Bps(s, d));
}
void tr_sessionLimitSpeed(tr_session* s, tr_direction d, bool b)
{
TR_ASSERT(tr_isSession(s));
TR_ASSERT(tr_isDirection(d));
s->speedLimitEnabled[d] = b;
updateBandwidth(s, d);
}
bool tr_sessionIsSpeedLimited(tr_session const* s, tr_direction d)
{
TR_ASSERT(tr_isSession(s));
TR_ASSERT(tr_isDirection(d));
return s->speedLimitEnabled[d];
}
/***
**** Alternative speed limits that are used during scheduled times
***/
void tr_sessionSetAltSpeed_Bps(tr_session* s, tr_direction d, unsigned int Bps)
{
TR_ASSERT(tr_isSession(s));
TR_ASSERT(tr_isDirection(d));
s->turtle.speedLimit_Bps[d] = Bps;
updateBandwidth(s, d);
}
void tr_sessionSetAltSpeed_KBps(tr_session* s, tr_direction d, unsigned int KBps)
{
tr_sessionSetAltSpeed_Bps(s, d, toSpeedBytes(KBps));
}
unsigned int tr_sessionGetAltSpeed_Bps(tr_session const* s, tr_direction d)
{
TR_ASSERT(tr_isSession(s));
TR_ASSERT(tr_isDirection(d));
return s->turtle.speedLimit_Bps[d];
}
unsigned int tr_sessionGetAltSpeed_KBps(tr_session const* s, tr_direction d)
{
return toSpeedKBps(tr_sessionGetAltSpeed_Bps(s, d));
}
static void userPokedTheClock(tr_session* s, struct tr_turtle_info* t)
{
tr_logAddDebug("Refreshing the turtle mode clock due to user changes");
t->autoTurtleState = TR_AUTO_SWITCH_UNUSED;
turtleUpdateTable(t);
if (t->isClockEnabled)
{
bool const enabled = getInTurtleTime(t);
useAltSpeed(s, t, enabled, true);
t->autoTurtleState = autoSwitchState(enabled);
}
}
void tr_sessionUseAltSpeedTime(tr_session* s, bool b)
{
TR_ASSERT(tr_isSession(s));
struct tr_turtle_info* t = &s->turtle;
if (t->isClockEnabled != b)
{
t->isClockEnabled = b;
userPokedTheClock(s, t);
}
}
bool tr_sessionUsesAltSpeedTime(tr_session const* s)
{
TR_ASSERT(tr_isSession(s));
return s->turtle.isClockEnabled;
}
void tr_sessionSetAltSpeedBegin(tr_session* s, int minute)
{
TR_ASSERT(tr_isSession(s));
TR_ASSERT(minute >= 0);
TR_ASSERT(minute < 60 * 24);
if (s->turtle.beginMinute != minute)
{
s->turtle.beginMinute = minute;
userPokedTheClock(s, &s->turtle);
}
}
int tr_sessionGetAltSpeedBegin(tr_session const* s)
{
TR_ASSERT(tr_isSession(s));
return s->turtle.beginMinute;
}
void tr_sessionSetAltSpeedEnd(tr_session* s, int minute)
{
TR_ASSERT(tr_isSession(s));
TR_ASSERT(minute >= 0);
TR_ASSERT(minute < 60 * 24);
if (s->turtle.endMinute != minute)
{
s->turtle.endMinute = minute;
userPokedTheClock(s, &s->turtle);
}
}
int tr_sessionGetAltSpeedEnd(tr_session const* s)
{
TR_ASSERT(tr_isSession(s));
return s->turtle.endMinute;
}
void tr_sessionSetAltSpeedDay(tr_session* s, tr_sched_day days)
{
TR_ASSERT(tr_isSession(s));
if (s->turtle.days != days)
{
s->turtle.days = days;
userPokedTheClock(s, &s->turtle);
}
}
tr_sched_day tr_sessionGetAltSpeedDay(tr_session const* s)
{
TR_ASSERT(tr_isSession(s));
return s->turtle.days;
}
void tr_sessionUseAltSpeed(tr_session* session, bool enabled)
{
useAltSpeed(session, &session->turtle, enabled, true);
}
bool tr_sessionUsesAltSpeed(tr_session const* s)
{
TR_ASSERT(tr_isSession(s));
return s->turtle.isEnabled;
}
void tr_sessionSetAltSpeedFunc(tr_session* session, tr_altSpeedFunc func, void* userData)
{
TR_ASSERT(tr_isSession(session));
session->turtle.callback = func;
session->turtle.callbackUserData = userData;
}
/***
****
***/
void tr_sessionSetPeerLimit(tr_session* session, uint16_t n)
{
TR_ASSERT(tr_isSession(session));
session->peerLimit = n;
}
uint16_t tr_sessionGetPeerLimit(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->peerLimit;
}
void tr_sessionSetPeerLimitPerTorrent(tr_session* session, uint16_t n)
{
TR_ASSERT(tr_isSession(session));
session->peerLimitPerTorrent = n;
}
uint16_t tr_sessionGetPeerLimitPerTorrent(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->peerLimitPerTorrent;
}
/***
****
***/
void tr_sessionSetPaused(tr_session* session, bool isPaused)
{
TR_ASSERT(tr_isSession(session));
session->pauseAddedTorrent = isPaused;
}
bool tr_sessionGetPaused(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->pauseAddedTorrent;
}
void tr_sessionSetDeleteSource(tr_session* session, bool deleteSource)
{
TR_ASSERT(tr_isSession(session));
session->deleteSourceTorrent = deleteSource;
}
bool tr_sessionGetDeleteSource(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->deleteSourceTorrent;
}
/***
****
***/
unsigned int tr_sessionGetPieceSpeed_Bps(tr_session const* session, tr_direction dir)
{
return tr_isSession(session) ? tr_bandwidthGetPieceSpeed_Bps(&session->bandwidth, 0, dir) : 0;
}
unsigned int tr_sessionGetRawSpeed_Bps(tr_session const* session, tr_direction dir)
{
return tr_isSession(session) ? tr_bandwidthGetRawSpeed_Bps(&session->bandwidth, 0, dir) : 0;
}
double tr_sessionGetRawSpeed_KBps(tr_session const* session, tr_direction dir)
{
return toSpeedKBps(tr_sessionGetRawSpeed_Bps(session, dir));
}
int tr_sessionCountTorrents(tr_session const* session)
{
return tr_isSession(session) ? session->torrentCount : 0;
}
tr_torrent** tr_sessionGetTorrents(tr_session* session, int* setme_n)
{
TR_ASSERT(tr_isSession(session));
TR_ASSERT(setme_n != nullptr);
int n = tr_sessionCountTorrents(session);
*setme_n = n;
tr_torrent** torrents = tr_new(tr_torrent*, n);
tr_torrent* tor = nullptr;
for (int i = 0; i < n; ++i)
{
torrents[i] = tor = tr_torrentNext(session, tor);
}
return torrents;
}
static int compareTorrentByCur(void const* va, void const* vb)
{
tr_torrent const* a = *(tr_torrent const* const*)va;
tr_torrent const* b = *(tr_torrent const* const*)vb;
uint64_t const aCur = a->downloadedCur + a->uploadedCur;
uint64_t const bCur = b->downloadedCur + b->uploadedCur;
if (aCur != bCur)
{
return aCur > bCur ? -1 : 1; /* close the biggest torrents first */
}
return 0;
}
static void closeBlocklists(tr_session*);
static void sessionCloseImplWaitForIdleUdp(evutil_socket_t fd, short what, void* vsession);
static void sessionCloseImplStart(tr_session* session)
{
int n;
tr_torrent** torrents;
session->isClosing = true;
free_incoming_peer_port(session);
if (session->isLPDEnabled)
{
tr_lpdUninit(session);
}
tr_utpClose(session);
tr_dhtUninit(session);
event_free(session->saveTimer);
session->saveTimer = nullptr;
event_free(session->nowTimer);
session->nowTimer = nullptr;
tr_verifyClose(session);
tr_sharedClose(session);
tr_rpcClose(&session->rpcServer);
/* Close the torrents. Get the most active ones first so that
* if we can't get them all closed in a reasonable amount of time,
* at least we get the most important ones first. */
torrents = tr_sessionGetTorrents(session, &n);
qsort(torrents, n, sizeof(tr_torrent*), compareTorrentByCur);
for (int i = 0; i < n; ++i)
{
tr_torrentFree(torrents[i]);
}
tr_free(torrents);
/* Close the announcer *after* closing the torrents
so that all the &event=stopped messages will be
queued to be sent by tr_announcerClose() */
tr_announcerClose(session);
/* and this goes *after* announcer close so that
it won't be idle until the announce events are sent... */
tr_webClose(session, TR_WEB_CLOSE_WHEN_IDLE);
tr_cacheFree(session->cache);
session->cache = nullptr;
/* saveTimer is not used at this point, reusing for UDP shutdown wait */
TR_ASSERT(session->saveTimer == nullptr);
session->saveTimer = evtimer_new(session->event_base, sessionCloseImplWaitForIdleUdp, session);
tr_timerAdd(session->saveTimer, 0, 0);
}
static void sessionCloseImplFinish(tr_session* session);
static void sessionCloseImplWaitForIdleUdp(evutil_socket_t fd, short what, void* vsession)
{
TR_UNUSED(fd);
TR_UNUSED(what);
auto* session = static_cast<tr_session*>(vsession);
TR_ASSERT(tr_isSession(session));
/* gotta keep udp running long enough to send out all
the &event=stopped UDP tracker messages */
if (!tr_tracker_udp_is_idle(session))
{
tr_tracker_udp_upkeep(session);
tr_timerAdd(session->saveTimer, 0, 100000);
return;
}
sessionCloseImplFinish(session);
}
static void sessionCloseImplFinish(tr_session* session)
{
event_free(session->saveTimer);
session->saveTimer = nullptr;
/* we had to wait until UDP trackers were closed before closing these: */
evdns_base_free(session->evdns_base, 0);
session->evdns_base = nullptr;
tr_tracker_udp_close(session);
tr_udpUninit(session);
tr_statsClose(session);
tr_peerMgrFree(session->peerMgr);
closeBlocklists(session);
tr_fdClose(session);
session->isClosed = true;
}
static void sessionCloseImpl(void* vsession)
{
auto* session = static_cast<tr_session*>(vsession);
TR_ASSERT(tr_isSession(session));
sessionCloseImplStart(session);
}
static bool deadlineReached(time_t const deadline)
{
return time(nullptr) >= deadline;
}
#define SHUTDOWN_MAX_SECONDS 20
void tr_sessionClose(tr_session* session)
{
TR_ASSERT(tr_isSession(session));
time_t const deadline = time(nullptr) + SHUTDOWN_MAX_SECONDS;
dbgmsg(
"shutting down transmission session %p... now is %zu, deadline is %zu",
(void*)session,
(size_t)time(nullptr),
(size_t)deadline);
/* close the session */
tr_runInEventThread(session, sessionCloseImpl, session);
while (!session->isClosed && !deadlineReached(deadline))
{
dbgmsg("waiting for the libtransmission thread to finish");
tr_wait_msec(100);
}
/* "shared" and "tracker" have live sockets,
* so we need to keep the transmission thread alive
* for a bit while they tell the router & tracker
* that we're closing now */
while ((session->shared != nullptr || session->web != nullptr || session->announcer != nullptr ||
session->announcer_udp != nullptr) &&
!deadlineReached(deadline))
{
dbgmsg(
"waiting on port unmap (%p) or announcer (%p)... now %zu deadline %zu",
(void*)session->shared,
(void*)session->announcer,
(size_t)time(nullptr),
(size_t)deadline);
tr_wait_msec(50);
}
tr_webClose(session, TR_WEB_CLOSE_NOW);
/* close the libtransmission thread */
tr_eventClose(session);
while (session->events != nullptr)
{
static bool forced = false;
dbgmsg("waiting for libtransmission thread to finish... now %zu deadline %zu", (size_t)time(nullptr), (size_t)deadline);
tr_wait_msec(100);
if (deadlineReached(deadline) && !forced)
{
dbgmsg("calling event_loopbreak()");
forced = true;
event_base_loopbreak(session->event_base);
}
if (deadlineReached(deadline + 3))
{
dbgmsg("deadline+3 reached... calling break...\n");
break;
}
}
/* free the session memory */
tr_variantFree(&session->removedTorrents);
tr_bandwidthDestruct(&session->bandwidth);
tr_bitfieldDestruct(&session->turtle.minutes);
tr_session_id_free(session->session_id);
tr_lockFree(session->lock);
if (session->metainfoLookup != nullptr)
{
tr_variantFree(session->metainfoLookup);
tr_free(session->metainfoLookup);
}
tr_device_info_free(session->downloadDir);
tr_ptrArrayDestruct(&session->torrentsSortedByHash, nullptr);
tr_ptrArrayDestruct(&session->torrentsSortedByHashString, nullptr);
tr_ptrArrayDestruct(&session->torrentsSortedById, nullptr);
tr_free(session->torrentDoneScript);
tr_free(session->configDir);
tr_free(session->resumeDir);
tr_free(session->torrentDir);
tr_free(session->incompleteDir);
tr_free(session->blocklist_url);
tr_free(session->peer_congestion_algorithm);
tr_free(session);
}
struct sessionLoadTorrentsData
{
tr_session* session;
tr_ctor* ctor;
int* setmeCount;
tr_torrent** torrents;
bool done;
};
static void sessionLoadTorrents(void* vdata)
{
auto* data = static_cast<struct sessionLoadTorrentsData*>(vdata);
TR_ASSERT(tr_isSession(data->session));
int i;
int n = 0;
tr_list* list = nullptr;
tr_ctorSetSave(data->ctor, false); /* since we already have them */
tr_sys_path_info info;
char const* dirname = tr_getTorrentDir(data->session);
tr_sys_dir_t odir = (tr_sys_path_get_info(dirname, 0, &info, nullptr) && info.type == TR_SYS_PATH_IS_DIRECTORY) ?
tr_sys_dir_open(dirname, nullptr) :
TR_BAD_SYS_DIR;
if (odir != TR_BAD_SYS_DIR)
{
char const* name;
while ((name = tr_sys_dir_read_name(odir, nullptr)) != nullptr)
{
if (tr_str_has_suffix(name, ".torrent"))
{
tr_torrent* tor;
char* path = tr_buildPath(dirname, name, nullptr);
tr_ctorSetMetainfoFromFile(data->ctor, path);
if ((tor = tr_torrentNew(data->ctor, nullptr, nullptr)) != nullptr)
{
tr_list_prepend(&list, tor);
++n;
}
tr_free(path);
}
}
tr_sys_dir_close(odir, nullptr);
}
data->torrents = tr_new(tr_torrent*, n);
i = 0;
for (tr_list* l = list; l != nullptr; l = l->next)
{
data->torrents[i++] = (tr_torrent*)l->data;
}
TR_ASSERT(i == n);
tr_list_free(&list, nullptr);
if (n != 0)
{
tr_logAddInfo(_("Loaded %d torrents"), n);
}
if (data->setmeCount != nullptr)
{
*data->setmeCount = n;
}
data->done = true;
}
tr_torrent** tr_sessionLoadTorrents(tr_session* session, tr_ctor* ctor, int* setmeCount)
{
struct sessionLoadTorrentsData data;
data.session = session;
data.ctor = ctor;
data.setmeCount = setmeCount;
data.torrents = nullptr;
data.done = false;
tr_runInEventThread(session, sessionLoadTorrents, &data);
while (!data.done)
{
tr_wait_msec(100);
}
return data.torrents;
}
/***
****
***/
void tr_sessionSetPexEnabled(tr_session* session, bool enabled)
{
TR_ASSERT(tr_isSession(session));
session->isPexEnabled = enabled;
}
bool tr_sessionIsPexEnabled(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->isPexEnabled;
}
bool tr_sessionAllowsDHT(tr_session const* session)
{
return tr_sessionIsDHTEnabled(session);
}
bool tr_sessionIsDHTEnabled(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->isDHTEnabled;
}
static void toggleDHTImpl(void* vsession)
{
auto* session = static_cast<tr_session*>(vsession);
TR_ASSERT(tr_isSession(session));
tr_udpUninit(session);
session->isDHTEnabled = !session->isDHTEnabled;
tr_udpInit(session);
}
void tr_sessionSetDHTEnabled(tr_session* session, bool enabled)
{
TR_ASSERT(tr_isSession(session));
if (enabled != session->isDHTEnabled)
{
tr_runInEventThread(session, toggleDHTImpl, session);
}
}
/***
****
***/
bool tr_sessionIsUTPEnabled(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
#ifdef WITH_UTP
return session->isUTPEnabled;
#else
return false;
#endif
}
static void toggle_utp(void* vsession)
{
auto* session = static_cast<tr_session*>(vsession);
TR_ASSERT(tr_isSession(session));
session->isUTPEnabled = !session->isUTPEnabled;
tr_udpSetSocketBuffers(session);
/* But don't call tr_utpClose -- see reset_timer in tr-utp.c for an
explanation. */
}
void tr_sessionSetUTPEnabled(tr_session* session, bool enabled)
{
TR_ASSERT(tr_isSession(session));
if (enabled != session->isUTPEnabled)
{
tr_runInEventThread(session, toggle_utp, session);
}
}
/***
****
***/
static void toggleLPDImpl(void* vsession)
{
auto* session = static_cast<tr_session*>(vsession);
TR_ASSERT(tr_isSession(session));
if (session->isLPDEnabled)
{
tr_lpdUninit(session);
}
session->isLPDEnabled = !session->isLPDEnabled;
if (session->isLPDEnabled)
{
tr_lpdInit(session, &session->bind_ipv4->addr);
}
}
void tr_sessionSetLPDEnabled(tr_session* session, bool enabled)
{
TR_ASSERT(tr_isSession(session));
if (enabled != session->isLPDEnabled)
{
tr_runInEventThread(session, toggleLPDImpl, session);
}
}
bool tr_sessionIsLPDEnabled(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->isLPDEnabled;
}
bool tr_sessionAllowsLPD(tr_session const* session)
{
return tr_sessionIsLPDEnabled(session);
}
/***
****
***/
void tr_sessionSetCacheLimit_MB(tr_session* session, int max_bytes)
{
TR_ASSERT(tr_isSession(session));
tr_cacheSetLimit(session->cache, toMemBytes(max_bytes));
}
int tr_sessionGetCacheLimit_MB(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return toMemMB(tr_cacheGetLimit(session->cache));
}
/***
****
***/
struct port_forwarding_data
{
bool enabled;
struct tr_shared* shared;
};
static void setPortForwardingEnabled(void* vdata)
{
auto* data = static_cast<struct port_forwarding_data*>(vdata);
tr_sharedTraversalEnable(data->shared, data->enabled);
tr_free(data);
}
void tr_sessionSetPortForwardingEnabled(tr_session* session, bool enabled)
{
struct port_forwarding_data* d;
d = tr_new0(struct port_forwarding_data, 1);
d->shared = session->shared;
d->enabled = enabled;
tr_runInEventThread(session, setPortForwardingEnabled, d);
}
bool tr_sessionIsPortForwardingEnabled(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return tr_sharedTraversalIsEnabled(session->shared);
}
/***
****
***/
static bool tr_stringEndsWith(char const* strval, char const* end)
{
size_t const slen = strlen(strval);
size_t const elen = strlen(end);
return slen >= elen && memcmp(&strval[slen - elen], end, elen) == 0;
}
static void loadBlocklists(tr_session* session)
{
tr_sys_dir_t odir;
char* dirname;
char const* name;
tr_list* blocklists = nullptr;
auto loadme = tr_ptrArray{};
bool const isEnabled = session->isBlocklistEnabled;
/* walk the blocklist directory... */
dirname = tr_buildPath(session->configDir, "blocklists", nullptr);
odir = tr_sys_dir_open(dirname, nullptr);
if (odir == TR_BAD_SYS_DIR)
{
tr_free(dirname);
return;
}
while ((name = tr_sys_dir_read_name(odir, nullptr)) != nullptr)
{
char* path;
char* load = nullptr;
if (name[0] == '.') /* ignore dotfiles */
{
continue;
}
path = tr_buildPath(dirname, name, nullptr);
if (tr_stringEndsWith(path, ".bin"))
{
load = tr_strdup(path);
}
else
{
char* binname;
tr_sys_path_info path_info;
tr_sys_path_info binname_info;
binname = tr_strdup_printf("%s" TR_PATH_DELIMITER_STR "%s.bin", dirname, name);
if (!tr_sys_path_get_info(binname, 0, &binname_info, nullptr)) /* create it */
{
tr_blocklistFile* b = tr_blocklistFileNew(binname, isEnabled);
int const n = tr_blocklistFileSetContent(b, path);
if (n > 0)
{
load = tr_strdup(binname);
}
tr_blocklistFileFree(b);
}
else if (
tr_sys_path_get_info(path, 0, &path_info, nullptr) &&
path_info.last_modified_at >= binname_info.last_modified_at) /* update it */
{
char* old;
tr_blocklistFile* b;
old = tr_strdup_printf("%s.old", binname);
tr_sys_path_remove(old, nullptr);
tr_sys_path_rename(binname, old, nullptr);
b = tr_blocklistFileNew(binname, isEnabled);
if (tr_blocklistFileSetContent(b, path) > 0)
{
tr_sys_path_remove(old, nullptr);
}
else
{
tr_sys_path_remove(binname, nullptr);
tr_sys_path_rename(old, binname, nullptr);
}
tr_blocklistFileFree(b);
tr_free(old);
}
tr_free(binname);
}
if (load != nullptr)
{
if (tr_ptrArrayFindSorted(&loadme, load, (PtrArrayCompareFunc)strcmp) == nullptr)
{
tr_ptrArrayInsertSorted(&loadme, load, (PtrArrayCompareFunc)strcmp);
}
else
{
tr_free(load);
}
}
tr_free(path);
}
if (!tr_ptrArrayEmpty(&loadme))
{
int const n = tr_ptrArraySize(&loadme);
char const* const* paths = (char const* const*)tr_ptrArrayBase(&loadme);
for (int i = 0; i < n; ++i)
{
tr_list_append(&blocklists, tr_blocklistFileNew(paths[i], isEnabled));
}
}
/* cleanup */
tr_sys_dir_close(odir, nullptr);
tr_free(dirname);
tr_ptrArrayDestruct(&loadme, (PtrArrayForeachFunc)tr_free);
session->blocklists = blocklists;
}
static void closeBlocklists(tr_session* session)
{
tr_list_free(&session->blocklists, (TrListForeachFunc)tr_blocklistFileFree);
}
void tr_sessionReloadBlocklists(tr_session* session)
{
closeBlocklists(session);
loadBlocklists(session);
tr_peerMgrOnBlocklistChanged(session->peerMgr);
}
int tr_blocklistGetRuleCount(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
int n = 0;
for (tr_list* l = session->blocklists; l != nullptr; l = l->next)
{
auto const* blocklistFile = static_cast<tr_blocklistFile*>(l->data);
n += tr_blocklistFileGetRuleCount(blocklistFile);
}
return n;
}
bool tr_blocklistIsEnabled(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->isBlocklistEnabled;
}
void tr_blocklistSetEnabled(tr_session* session, bool isEnabled)
{
TR_ASSERT(tr_isSession(session));
session->isBlocklistEnabled = isEnabled;
for (tr_list* l = session->blocklists; l != nullptr; l = l->next)
{
auto* blocklistFile = static_cast<tr_blocklistFile*>(l->data);
tr_blocklistFileSetEnabled(blocklistFile, isEnabled);
}
}
bool tr_blocklistExists(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->blocklists != nullptr;
}
int tr_blocklistSetContent(tr_session* session, char const* contentFilename)
{
int ruleCount;
tr_blocklistFile* b = nullptr;
char const* defaultName = DEFAULT_BLOCKLIST_FILENAME;
tr_sessionLock(session);
for (tr_list* l = session->blocklists; b == nullptr && l != nullptr; l = l->next)
{
auto const* blocklistFile = static_cast<tr_blocklistFile*>(l->data);
if (tr_stringEndsWith(tr_blocklistFileGetFilename(blocklistFile), defaultName))
{
b = static_cast<tr_blocklistFile*>(l->data);
}
}
if (b == nullptr)
{
char* path = tr_buildPath(session->configDir, "blocklists", defaultName, nullptr);
b = tr_blocklistFileNew(path, session->isBlocklistEnabled);
tr_list_append(&session->blocklists, b);
tr_free(path);
}
ruleCount = tr_blocklistFileSetContent(b, contentFilename);
tr_sessionUnlock(session);
return ruleCount;
}
bool tr_sessionIsAddressBlocked(tr_session const* session, tr_address const* addr)
{
TR_ASSERT(tr_isSession(session));
for (tr_list* l = session->blocklists; l != nullptr; l = l->next)
{
if (tr_blocklistFileHasAddress(static_cast<tr_blocklistFile*>(l->data), addr))
{
return true;
}
}
return false;
}
void tr_blocklistSetURL(tr_session* session, char const* url)
{
if (session->blocklist_url != url)
{
tr_free(session->blocklist_url);
session->blocklist_url = tr_strdup(url);
}
}
char const* tr_blocklistGetURL(tr_session const* session)
{
return session->blocklist_url;
}
/***
****
***/
static void metainfoLookupInit(tr_session* session)
{
TR_ASSERT(tr_isSession(session));
tr_variant* lookup = tr_new0(tr_variant, 1);
tr_variantInitDict(lookup, 0);
int n = 0;
tr_sys_path_info info;
char const* dirname = tr_getTorrentDir(session);
tr_sys_dir_t odir = (tr_sys_path_get_info(dirname, 0, &info, nullptr) && info.type == TR_SYS_PATH_IS_DIRECTORY) ?
tr_sys_dir_open(dirname, nullptr) :
TR_BAD_SYS_DIR;
if (odir != TR_BAD_SYS_DIR)
{
tr_ctor* ctor = tr_ctorNew(session);
tr_ctorSetSave(ctor, false); /* since we already have them */
char const* name;
/* walk through the directory and find the mappings */
while ((name = tr_sys_dir_read_name(odir, nullptr)) != nullptr)
{
if (tr_str_has_suffix(name, ".torrent"))
{
tr_info inf;
char* path = tr_buildPath(dirname, name, nullptr);
tr_ctorSetMetainfoFromFile(ctor, path);
if (tr_torrentParse(ctor, &inf) == TR_PARSE_OK)
{
++n;
tr_variantDictAddStr(lookup, tr_quark_new(inf.hashString, TR_BAD_SIZE), path);
}
tr_free(path);
}
}
tr_sys_dir_close(odir, nullptr);
tr_ctorFree(ctor);
}
session->metainfoLookup = lookup;
tr_logAddDebug("Found %d torrents in \"%s\"", n, dirname);
}
char const* tr_sessionFindTorrentFile(tr_session const* session, char const* hashString)
{
if (session->metainfoLookup == nullptr)
{
metainfoLookupInit((tr_session*)session);
}
char const* filename = nullptr;
(void)tr_variantDictFindStr(session->metainfoLookup, tr_quark_new(hashString, TR_BAD_SIZE), &filename, nullptr);
return filename;
}
void tr_sessionSetTorrentFile(tr_session* session, char const* hashString, char const* filename)
{
/* since we walk session->configDir/torrents/ to build the lookup table,
* and tr_sessionSetTorrentFile() is just to tell us there's a new file
* in that same directory, we don't need to do anything here if the
* lookup table hasn't been built yet */
if (session->metainfoLookup != nullptr)
{
tr_variantDictAddStr(session->metainfoLookup, tr_quark_new(hashString, TR_BAD_SIZE), filename);
}
}
/***
****
***/
void tr_sessionSetRPCEnabled(tr_session* session, bool isEnabled)
{
TR_ASSERT(tr_isSession(session));
tr_rpcSetEnabled(session->rpcServer, isEnabled);
}
bool tr_sessionIsRPCEnabled(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return tr_rpcIsEnabled(session->rpcServer);
}
void tr_sessionSetRPCPort(tr_session* session, tr_port port)
{
TR_ASSERT(tr_isSession(session));
tr_rpcSetPort(session->rpcServer, port);
}
tr_port tr_sessionGetRPCPort(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return tr_rpcGetPort(session->rpcServer);
}
void tr_sessionSetRPCUrl(tr_session* session, char const* url)
{
TR_ASSERT(tr_isSession(session));
tr_rpcSetUrl(session->rpcServer, url);
}
char const* tr_sessionGetRPCUrl(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return tr_rpcGetUrl(session->rpcServer);
}
void tr_sessionSetRPCCallback(tr_session* session, tr_rpc_func func, void* user_data)
{
TR_ASSERT(tr_isSession(session));
session->rpc_func = func;
session->rpc_func_user_data = user_data;
}
void tr_sessionSetRPCWhitelist(tr_session* session, char const* whitelist)
{
TR_ASSERT(tr_isSession(session));
tr_rpcSetWhitelist(session->rpcServer, whitelist);
}
char const* tr_sessionGetRPCWhitelist(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return tr_rpcGetWhitelist(session->rpcServer);
}
void tr_sessionSetRPCWhitelistEnabled(tr_session* session, bool isEnabled)
{
TR_ASSERT(tr_isSession(session));
tr_rpcSetWhitelistEnabled(session->rpcServer, isEnabled);
}
bool tr_sessionGetRPCWhitelistEnabled(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return tr_rpcGetWhitelistEnabled(session->rpcServer);
}
void tr_sessionSetRPCPassword(tr_session* session, char const* password)
{
TR_ASSERT(tr_isSession(session));
tr_rpcSetPassword(session->rpcServer, password);
}
char const* tr_sessionGetRPCPassword(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return tr_rpcGetPassword(session->rpcServer);
}
void tr_sessionSetRPCUsername(tr_session* session, char const* username)
{
TR_ASSERT(tr_isSession(session));
tr_rpcSetUsername(session->rpcServer, username);
}
char const* tr_sessionGetRPCUsername(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return tr_rpcGetUsername(session->rpcServer);
}
void tr_sessionSetRPCPasswordEnabled(tr_session* session, bool isEnabled)
{
TR_ASSERT(tr_isSession(session));
tr_rpcSetPasswordEnabled(session->rpcServer, isEnabled);
}
bool tr_sessionIsRPCPasswordEnabled(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return tr_rpcIsPasswordEnabled(session->rpcServer);
}
char const* tr_sessionGetRPCBindAddress(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return tr_rpcGetBindAddress(session->rpcServer);
}
/****
*****
****/
bool tr_sessionIsTorrentDoneScriptEnabled(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->isTorrentDoneScriptEnabled;
}
void tr_sessionSetTorrentDoneScriptEnabled(tr_session* session, bool isEnabled)
{
TR_ASSERT(tr_isSession(session));
session->isTorrentDoneScriptEnabled = isEnabled;
}
char const* tr_sessionGetTorrentDoneScript(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->torrentDoneScript;
}
void tr_sessionSetTorrentDoneScript(tr_session* session, char const* scriptFilename)
{
TR_ASSERT(tr_isSession(session));
if (session->torrentDoneScript != scriptFilename)
{
tr_free(session->torrentDoneScript);
session->torrentDoneScript = tr_strdup(scriptFilename);
}
}
/***
****
***/
void tr_sessionSetQueueSize(tr_session* session, tr_direction dir, int n)
{
TR_ASSERT(tr_isSession(session));
TR_ASSERT(tr_isDirection(dir));
session->queueSize[dir] = n;
}
int tr_sessionGetQueueSize(tr_session const* session, tr_direction dir)
{
TR_ASSERT(tr_isSession(session));
TR_ASSERT(tr_isDirection(dir));
return session->queueSize[dir];
}
void tr_sessionSetQueueEnabled(tr_session* session, tr_direction dir, bool is_enabled)
{
TR_ASSERT(tr_isSession(session));
TR_ASSERT(tr_isDirection(dir));
session->queueEnabled[dir] = is_enabled;
}
bool tr_sessionGetQueueEnabled(tr_session const* session, tr_direction dir)
{
TR_ASSERT(tr_isSession(session));
TR_ASSERT(tr_isDirection(dir));
return session->queueEnabled[dir];
}
void tr_sessionSetQueueStalledMinutes(tr_session* session, int minutes)
{
TR_ASSERT(tr_isSession(session));
TR_ASSERT(minutes > 0);
session->queueStalledMinutes = minutes;
}
void tr_sessionSetQueueStalledEnabled(tr_session* session, bool is_enabled)
{
TR_ASSERT(tr_isSession(session));
session->stalledEnabled = is_enabled;
}
bool tr_sessionGetQueueStalledEnabled(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->stalledEnabled;
}
int tr_sessionGetQueueStalledMinutes(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return session->queueStalledMinutes;
}
void tr_sessionSetAntiBruteForceThreshold(tr_session* session, int bad_requests)
{
TR_ASSERT(tr_isSession(session));
TR_ASSERT(bad_requests > 0);
tr_rpcSetAntiBruteForceThreshold(session->rpcServer, bad_requests);
}
void tr_sessionSetAntiBruteForceEnabled(tr_session* session, bool is_enabled)
{
TR_ASSERT(tr_isSession(session));
tr_rpcSetAntiBruteForceEnabled(session->rpcServer, is_enabled);
}
bool tr_sessionGetAntiBruteForceEnabled(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return tr_rpcGetAntiBruteForceEnabled(session->rpcServer);
}
int tr_sessionGetAntiBruteForceThreshold(tr_session const* session)
{
TR_ASSERT(tr_isSession(session));
return tr_rpcGetAntiBruteForceThreshold(session->rpcServer);
}
void tr_sessionGetNextQueuedTorrents(tr_session* session, tr_direction direction, size_t num_wanted, tr_ptrArray* setme)
{
TR_ASSERT(tr_isSession(session));
TR_ASSERT(tr_isDirection(direction));
// build an array of the candidates
auto candidates = std::vector<tr_torrent*>{};
candidates.reserve(tr_sessionCountTorrents(session));
tr_torrent* tor = nullptr;
while ((tor = tr_torrentNext(session, tor)) != nullptr)
{
if (tr_torrentIsQueued(tor) && (direction == tr_torrentGetQueueDirection(tor)))
{
candidates.push_back(tor);
}
}
// find the best n candidates
num_wanted = std::min(num_wanted, candidates.size());
if (num_wanted < candidates.size())
{
std::partial_sort(
std::begin(candidates),
std::begin(candidates) + num_wanted,
std::end(candidates),
[](auto const* a, auto const* b) { return tr_torrentGetQueuePosition(a) < tr_torrentGetQueuePosition(b); });
candidates.resize(num_wanted);
}
// add them to the return array
for (auto* candidate : candidates)
{
tr_ptrArrayAppend(setme, candidate);
}
}
int tr_sessionCountQueueFreeSlots(tr_session* session, tr_direction dir)
{
int const max = tr_sessionGetQueueSize(session, dir);
tr_torrent_activity const activity = dir == TR_UP ? TR_STATUS_SEED : TR_STATUS_DOWNLOAD;
if (!tr_sessionGetQueueEnabled(session, dir))
{
return INT_MAX;
}
/* count how many torrents are active */
int active_count = 0;
bool const stalled_enabled = tr_sessionGetQueueStalledEnabled(session);
int const stalled_if_idle_for_n_seconds = tr_sessionGetQueueStalledMinutes(session) * 60;
time_t const now = tr_time();
tr_torrent* tor = nullptr;
while ((tor = tr_torrentNext(session, tor)) != nullptr)
{
/* is it the right activity? */
if (activity != tr_torrentGetActivity(tor))
{
continue;
}
/* is it stalled? */
if (stalled_enabled)
{
int const idle_secs = (int)difftime(now, std::max(tor->startDate, tor->activityDate));
if (idle_secs >= stalled_if_idle_for_n_seconds)
continue;
}
++active_count;
/* if we've reached the limit, no need to keep counting */
if (active_count >= max)
{
return 0;
}
}
return max - active_count;
}
static int compareTorrentsById(void const* va, void const* vb)
{
auto const* const a = static_cast<tr_torrent const*>(va);
auto const* const b = static_cast<tr_torrent const*>(vb);
return a->uniqueId - b->uniqueId;
}
static int compareTorrentsByHashString(void const* va, void const* vb)
{
auto const* const a = static_cast<tr_torrent const*>(va);
auto const* const b = static_cast<tr_torrent const*>(vb);
return evutil_ascii_strcasecmp(a->info.hashString, b->info.hashString);
}
static int compareTorrentsByHash(void const* va, void const* vb)
{
auto const* const a = static_cast<tr_torrent const*>(va);
auto const* const b = static_cast<tr_torrent const*>(vb);
return memcmp(a->info.hash, b->info.hash, SHA_DIGEST_LENGTH);
}
void tr_sessionAddTorrent(tr_session* session, tr_torrent* tor)
{
/* add tor to tr_session.torrentList */
tor->next = session->torrentList;
session->torrentList = tor;
/* add tor to tr_session.torrentsSortedByFoo */
tr_ptrArrayInsertSorted(&session->torrentsSortedById, tor, compareTorrentsById);
tr_ptrArrayInsertSorted(&session->torrentsSortedByHashString, tor, compareTorrentsByHashString);
tr_ptrArrayInsertSorted(&session->torrentsSortedByHash, tor, compareTorrentsByHash);
/* increment the torrent count */
++session->torrentCount;
}
void tr_sessionRemoveTorrent(tr_session* session, tr_torrent* tor)
{
/* remove tor from tr_session.torrentList */
if (tor == session->torrentList)
{
session->torrentList = tor->next;
}
else
{
for (tr_torrent* t = session->torrentList; t != nullptr; t = t->next)
{
if (t->next == tor)
{
t->next = tor->next;
break;
}
}
}
/* remove tor from tr_session.torrentsSortedByFoo */
tr_ptrArrayRemoveSortedPointer(&session->torrentsSortedById, tor, compareTorrentsById);
tr_ptrArrayRemoveSortedPointer(&session->torrentsSortedByHashString, tor, compareTorrentsByHashString);
tr_ptrArrayRemoveSortedPointer(&session->torrentsSortedByHash, tor, compareTorrentsByHash);
/* decrement the torrent count */
TR_ASSERT(session->torrentCount >= 1);
session->torrentCount--;
}
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