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transmission/libtransmission/session.c

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/*
* This file Copyright (C) 2008-2009 Charles Kerr <charles@transmissionbt.com>
*
* This file is licensed by the GPL version 2. Works owned by the
* Transmission project are granted a special exemption to clause 2(b)
* so that the bulk of its code can remain under the MIT license.
* This exemption does not extend to derived works not owned by
* the Transmission project.
*
* $Id$
*/
#include <assert.h>
#include <stdlib.h>
#include <string.h> /* memcpy */
#include <signal.h>
#include <sys/types.h> /* stat(), umask() */
#include <sys/stat.h> /* stat(), umask() */
#include <unistd.h> /* stat */
#include <dirent.h> /* opendir */
#include <event.h>
#include "transmission.h"
#include "bandwidth.h"
#include "bencode.h"
#include "blocklist.h"
#include "crypto.h"
#include "fdlimit.h"
#include "list.h"
#include "metainfo.h" /* tr_metainfoFree */
#include "net.h"
#include "peer-io.h"
#include "peer-mgr.h"
#include "platform.h" /* tr_lock */
#include "port-forwarding.h"
#include "rpc-server.h"
#include "session.h"
#include "stats.h"
#include "torrent.h"
#include "tracker.h"
#include "tr-dht.h"
#include "trevent.h"
#include "utils.h"
#include "verify.h"
#include "version.h"
#include "web.h"
enum
{
SAVE_INTERVAL_SECS = 120
};
#define dbgmsg( ... ) \
do { \
if( tr_deepLoggingIsActive( ) ) \
tr_deepLog( __FILE__, __LINE__, NULL, __VA_ARGS__ ); \
} while( 0 )
static tr_port
getRandomPort( tr_session * s )
{
return tr_cryptoWeakRandInt( 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) */
uint8_t*
tr_peerIdNew( void )
{
int i;
int val;
int total = 0;
uint8_t * buf = tr_new( uint8_t, 21 );
const char * pool = "0123456789abcdefghijklmnopqrstuvwxyz";
const int base = 36;
memcpy( buf, PEERID_PREFIX, 8 );
for( i = 8; i < 19; ++i )
{
val = tr_cryptoRandInt( base );
total += val;
buf[i] = pool[val];
}
val = total % base ? base - ( total % base ) : 0;
buf[19] = pool[val];
buf[20] = '\0';
return buf;
}
const uint8_t*
tr_getPeerId( void )
{
static uint8_t * id = NULL;
if( id == NULL )
id = tr_peerIdNew( );
return id;
}
/***
****
***/
tr_encryption_mode
tr_sessionGetEncryption( tr_session * session )
{
assert( session );
return session->encryptionMode;
}
void
tr_sessionSetEncryption( tr_session * session,
tr_encryption_mode mode )
{
assert( session );
assert( mode == TR_ENCRYPTION_PREFERRED
|| mode == TR_ENCRYPTION_REQUIRED
|| mode == TR_CLEAR_PREFERRED );
session->encryptionMode = mode;
}
/***
****
***/
struct tr_bindinfo
{
int socket;
tr_address addr;
struct event ev;
};
static void
close_bindinfo( struct tr_bindinfo * b )
{
if( b->socket >=0 )
{
event_del( &b->ev );
EVUTIL_CLOSESOCKET( b->socket );
}
}
static void
close_incoming_peer_port( tr_session * session )
{
close_bindinfo( session->public_ipv4 );
close_bindinfo( session->public_ipv6 );
}
static void
free_incoming_peer_port( tr_session * session )
{
close_bindinfo( session->public_ipv4 );
tr_free( session->public_ipv4 );
session->public_ipv4 = NULL;
close_bindinfo( session->public_ipv6 );
tr_free( session->public_ipv6 );
session->public_ipv6 = NULL;
}
static void
accept_incoming_peer( int fd, short what UNUSED, void * vsession )
{
int clientSocket;
tr_port clientPort;
tr_address clientAddr;
tr_session * session = vsession;
clientSocket = tr_netAccept( session, fd, &clientAddr, &clientPort );
if( clientSocket > 0 ) {
tr_deepLog( __FILE__, __LINE__, NULL, "new incoming connection %d (%s)",
clientSocket, tr_peerIoAddrStr( &clientAddr, clientPort ) );
tr_peerMgrAddIncoming( session->peerMgr, &clientAddr, clientPort, 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->public_ipv4;
b->socket = tr_netBindTCP( &b->addr, session->peerPort, FALSE );
if( b->socket >= 0 ) {
event_set( &b->ev, b->socket, EV_READ | EV_PERSIST, accept_incoming_peer, session );
event_add( &b->ev, NULL );
}
/* and do the exact same thing for ipv6, if it's supported... */
if( tr_net_hasIPv6( session->peerPort ) ) {
b = session->public_ipv6;
b->socket = tr_netBindTCP( &b->addr, session->peerPort, FALSE );
if( b->socket >= 0 ) {
event_set( &b->ev, b->socket, EV_READ | EV_PERSIST, accept_incoming_peer, session );
event_add( &b->ev, NULL );
}
}
}
const tr_address*
tr_sessionGetPublicAddress( const tr_session * session, int tr_af_type )
{
switch( tr_af_type )
{
case TR_AF_INET: return &session->public_ipv4->addr;
case TR_AF_INET6: return &session->public_ipv6->addr; break;
default: return NULL;
}
}
/***
****
***/
static int
tr_stringEndsWith( const char * str, const char * end )
{
const size_t slen = strlen( str );
const size_t elen = strlen( end );
return slen >= elen && !memcmp( &str[slen - elen], end, elen );
}
static void
loadBlocklists( tr_session * session )
{
int binCount = 0;
int newCount = 0;
struct stat sb;
char * dirname;
DIR * odir = NULL;
tr_list * list = NULL;
const tr_bool isEnabled = session->isBlocklistEnabled;
/* walk through the directory and find blocklists */
dirname = tr_buildPath( session->configDir, "blocklists", NULL );
if( !stat( dirname,
&sb ) && S_ISDIR( sb.st_mode )
&& ( ( odir = opendir( dirname ) ) ) )
{
struct dirent *d;
for( d = readdir( odir ); d; d = readdir( odir ) )
{
char * filename;
if( !d->d_name || d->d_name[0] == '.' ) /* skip dotfiles, ., and ..
*/
continue;
filename = tr_buildPath( dirname, d->d_name, NULL );
if( tr_stringEndsWith( filename, ".bin" ) )
{
/* if we don't already have this blocklist, add it */
if( !tr_list_find( list, filename,
(TrListCompareFunc)strcmp ) )
{
tr_list_append( &list,
_tr_blocklistNew( filename, isEnabled ) );
++binCount;
}
}
else
{
/* strip out the file suffix, if there is one, and add ".bin"
instead */
tr_blocklist * b;
const char * dot = strrchr( d->d_name, '.' );
const int len = dot ? dot - d->d_name
: (int)strlen( d->d_name );
char * tmp = tr_strdup_printf(
"%s" TR_PATH_DELIMITER_STR "%*.*s.bin",
dirname, len, len, d->d_name );
b = _tr_blocklistNew( tmp, isEnabled );
_tr_blocklistSetContent( b, filename );
tr_list_append( &list, b );
++newCount;
tr_free( tmp );
}
tr_free( filename );
}
closedir( odir );
}
session->blocklists = list;
if( binCount )
tr_dbg( "Found %d blocklists in \"%s\"", binCount, dirname );
if( newCount )
tr_dbg( "Found %d new blocklists in \"%s\"", newCount, dirname );
tr_free( dirname );
}
static tr_bool
isAltTime( const tr_session * s )
{
int minutes, day;
tr_bool withinTime;
struct tm tm;
const time_t now = time( NULL );
const int begin = s->altSpeedTimeBegin;
const int end = s->altSpeedTimeEnd;
const tr_bool toNextDay = begin > end;
tr_localtime_r( &now, &tm );
minutes = tm.tm_hour*60 + tm.tm_min;
day = tm.tm_wday;
if( !toNextDay )
withinTime = ( begin <= minutes ) && ( minutes < end );
else /* goes past midnight */
withinTime = ( begin <= minutes ) || ( minutes < end );
if( !withinTime )
return FALSE;
if( toNextDay && (minutes < end) )
day = (day - 1) % 7;
return ((1<<day) & s->altSpeedTimeDay) != 0;
}
/***
****
***/
#ifdef TR_EMBEDDED
#define TR_DEFAULT_ENCRYPTION TR_CLEAR_PREFERRED
#else
#define TR_DEFAULT_ENCRYPTION TR_ENCRYPTION_PREFERRED
#endif
void
tr_sessionGetDefaultSettings( tr_benc * d )
{
assert( tr_bencIsDict( d ) );
tr_bencDictReserve( d, 35 );
tr_bencDictAddBool( d, TR_PREFS_KEY_BLOCKLIST_ENABLED, FALSE );
tr_bencDictAddBool( d, TR_PREFS_KEY_DHT_ENABLED, TRUE );
tr_bencDictAddStr ( d, TR_PREFS_KEY_DOWNLOAD_DIR, tr_getDefaultDownloadDir( ) );
tr_bencDictAddInt ( d, TR_PREFS_KEY_DSPEED, 100 );
tr_bencDictAddBool( d, TR_PREFS_KEY_DSPEED_ENABLED, FALSE );
tr_bencDictAddInt ( d, TR_PREFS_KEY_ENCRYPTION, TR_DEFAULT_ENCRYPTION );
tr_bencDictAddBool( d, TR_PREFS_KEY_LAZY_BITFIELD, TRUE );
tr_bencDictAddInt ( d, TR_PREFS_KEY_MSGLEVEL, TR_MSG_INF );
tr_bencDictAddInt ( d, TR_PREFS_KEY_OPEN_FILE_LIMIT, atoi( TR_DEFAULT_OPEN_FILE_LIMIT_STR ) );
tr_bencDictAddInt ( d, TR_PREFS_KEY_PEER_LIMIT_GLOBAL, atoi( TR_DEFAULT_PEER_LIMIT_GLOBAL_STR ) );
tr_bencDictAddInt ( d, TR_PREFS_KEY_PEER_LIMIT_TORRENT, atoi( TR_DEFAULT_PEER_LIMIT_TORRENT_STR ) );
tr_bencDictAddInt ( d, TR_PREFS_KEY_PEER_PORT, atoi( TR_DEFAULT_PEER_PORT_STR ) );
tr_bencDictAddBool( d, TR_PREFS_KEY_PEER_PORT_RANDOM_ON_START, FALSE );
tr_bencDictAddInt ( d, TR_PREFS_KEY_PEER_PORT_RANDOM_LOW, 49152 );
tr_bencDictAddInt ( d, TR_PREFS_KEY_PEER_PORT_RANDOM_HIGH, 65535 );
tr_bencDictAddInt ( d, TR_PREFS_KEY_PEER_SOCKET_TOS, atoi( TR_DEFAULT_PEER_SOCKET_TOS_STR ) );
tr_bencDictAddBool( d, TR_PREFS_KEY_PEX_ENABLED, TRUE );
tr_bencDictAddBool( d, TR_PREFS_KEY_PORT_FORWARDING, TRUE );
tr_bencDictAddInt ( d, TR_PREFS_KEY_PREALLOCATION, TR_PREALLOCATE_SPARSE );
tr_bencDictAddStr ( d, TR_PREFS_KEY_PROXY, "" );
tr_bencDictAddBool( d, TR_PREFS_KEY_PROXY_AUTH_ENABLED, FALSE );
tr_bencDictAddBool( d, TR_PREFS_KEY_PROXY_ENABLED, FALSE );
tr_bencDictAddStr ( d, TR_PREFS_KEY_PROXY_PASSWORD, "" );
tr_bencDictAddInt ( d, TR_PREFS_KEY_PROXY_PORT, 80 );
tr_bencDictAddInt ( d, TR_PREFS_KEY_PROXY_TYPE, TR_PROXY_HTTP );
tr_bencDictAddStr ( d, TR_PREFS_KEY_PROXY_USERNAME, "" );
tr_bencDictAddReal( d, TR_PREFS_KEY_RATIO, 2.0 );
tr_bencDictAddBool( d, TR_PREFS_KEY_RATIO_ENABLED, FALSE );
tr_bencDictAddBool( d, TR_PREFS_KEY_RPC_AUTH_REQUIRED, FALSE );
tr_bencDictAddStr ( d, TR_PREFS_KEY_RPC_BIND_ADDRESS, "0.0.0.0" );
tr_bencDictAddBool( d, TR_PREFS_KEY_RPC_ENABLED, TRUE );
tr_bencDictAddStr ( d, TR_PREFS_KEY_RPC_PASSWORD, "" );
tr_bencDictAddStr ( d, TR_PREFS_KEY_RPC_USERNAME, "" );
tr_bencDictAddStr ( d, TR_PREFS_KEY_RPC_WHITELIST, TR_DEFAULT_RPC_WHITELIST );
tr_bencDictAddBool( d, TR_PREFS_KEY_RPC_WHITELIST_ENABLED, TRUE );
tr_bencDictAddInt ( d, TR_PREFS_KEY_RPC_PORT, atoi( TR_DEFAULT_RPC_PORT_STR ) );
tr_bencDictAddBool( d, TR_PREFS_KEY_ALT_SPEED_ENABLED, FALSE );
tr_bencDictAddInt ( d, TR_PREFS_KEY_ALT_SPEED_UP, 50 ); /* half the regular */
tr_bencDictAddInt ( d, TR_PREFS_KEY_ALT_SPEED_DOWN, 50 ); /* half the regular */
tr_bencDictAddInt ( d, TR_PREFS_KEY_ALT_SPEED_TIME_BEGIN, 540 ); /* 9am */
tr_bencDictAddBool( d, TR_PREFS_KEY_ALT_SPEED_TIME_ENABLED, FALSE );
tr_bencDictAddInt ( d, TR_PREFS_KEY_ALT_SPEED_TIME_END, 1020 ); /* 5pm */
tr_bencDictAddInt ( d, TR_PREFS_KEY_ALT_SPEED_TIME_DAY, TR_SCHED_ALL );
tr_bencDictAddInt ( d, TR_PREFS_KEY_USPEED, 100 );
tr_bencDictAddBool( d, TR_PREFS_KEY_USPEED_ENABLED, FALSE );
tr_bencDictAddInt ( d, TR_PREFS_KEY_UMASK, 022 );
tr_bencDictAddInt ( d, TR_PREFS_KEY_UPLOAD_SLOTS_PER_TORRENT, 14 );
tr_bencDictAddStr ( d, TR_PREFS_KEY_BIND_ADDRESS_IPV4, TR_DEFAULT_BIND_ADDRESS_IPV4 );
tr_bencDictAddStr ( d, TR_PREFS_KEY_BIND_ADDRESS_IPV6, TR_DEFAULT_BIND_ADDRESS_IPV6 );
}
void
tr_sessionGetSettings( tr_session * s, struct tr_benc * d )
{
assert( tr_bencIsDict( d ) );
tr_bencDictReserve( d, 30 );
tr_bencDictAddBool( d, TR_PREFS_KEY_BLOCKLIST_ENABLED, tr_blocklistIsEnabled( s ) );
tr_bencDictAddBool( d, TR_PREFS_KEY_DHT_ENABLED, s->isDHTEnabled );
tr_bencDictAddStr ( d, TR_PREFS_KEY_DOWNLOAD_DIR, s->downloadDir );
tr_bencDictAddInt ( d, TR_PREFS_KEY_DSPEED, tr_sessionGetSpeedLimit( s, TR_DOWN ) );
tr_bencDictAddBool( d, TR_PREFS_KEY_DSPEED_ENABLED, tr_sessionIsSpeedLimited( s, TR_DOWN ) );
tr_bencDictAddInt ( d, TR_PREFS_KEY_ENCRYPTION, s->encryptionMode );
tr_bencDictAddBool( d, TR_PREFS_KEY_LAZY_BITFIELD, s->useLazyBitfield );
tr_bencDictAddInt ( d, TR_PREFS_KEY_MSGLEVEL, tr_getMessageLevel( ) );
tr_bencDictAddInt ( d, TR_PREFS_KEY_OPEN_FILE_LIMIT, s->openFileLimit );
tr_bencDictAddInt ( d, TR_PREFS_KEY_PEER_LIMIT_GLOBAL, tr_sessionGetPeerLimit( s ) );
tr_bencDictAddInt ( d, TR_PREFS_KEY_PEER_LIMIT_TORRENT, s->peerLimitPerTorrent );
tr_bencDictAddInt ( d, TR_PREFS_KEY_PEER_PORT, tr_sessionGetPeerPort( s ) );
tr_bencDictAddBool( d, TR_PREFS_KEY_PEER_PORT_RANDOM_ON_START, s->isPortRandom );
tr_bencDictAddInt ( d, TR_PREFS_KEY_PEER_PORT_RANDOM_LOW, s->randomPortLow );
tr_bencDictAddInt ( d, TR_PREFS_KEY_PEER_PORT_RANDOM_HIGH, s->randomPortHigh );
tr_bencDictAddInt ( d, TR_PREFS_KEY_PEER_SOCKET_TOS, s->peerSocketTOS );
tr_bencDictAddBool( d, TR_PREFS_KEY_PEX_ENABLED, s->isPexEnabled );
tr_bencDictAddBool( d, TR_PREFS_KEY_PORT_FORWARDING, tr_sessionIsPortForwardingEnabled( s ) );
tr_bencDictAddInt ( d, TR_PREFS_KEY_PREALLOCATION, s->preallocationMode );
tr_bencDictAddStr ( d, TR_PREFS_KEY_PROXY, s->proxy );
tr_bencDictAddBool( d, TR_PREFS_KEY_PROXY_AUTH_ENABLED, s->isProxyAuthEnabled );
tr_bencDictAddBool( d, TR_PREFS_KEY_PROXY_ENABLED, s->isProxyEnabled );
tr_bencDictAddStr ( d, TR_PREFS_KEY_PROXY_PASSWORD, s->proxyPassword );
tr_bencDictAddInt ( d, TR_PREFS_KEY_PROXY_PORT, s->proxyPort );
tr_bencDictAddInt ( d, TR_PREFS_KEY_PROXY_TYPE, s->proxyType );
tr_bencDictAddStr ( d, TR_PREFS_KEY_PROXY_USERNAME, s->proxyUsername );
tr_bencDictAddReal( d, TR_PREFS_KEY_RATIO, s->desiredRatio );
tr_bencDictAddBool( d, TR_PREFS_KEY_RATIO_ENABLED, s->isRatioLimited );
tr_bencDictAddBool( d, TR_PREFS_KEY_RPC_AUTH_REQUIRED, tr_sessionIsRPCPasswordEnabled( s ) );
tr_bencDictAddStr ( d, TR_PREFS_KEY_RPC_BIND_ADDRESS, tr_sessionGetRPCBindAddress( s ) );
tr_bencDictAddBool( d, TR_PREFS_KEY_RPC_ENABLED, tr_sessionIsRPCEnabled( s ) );
tr_bencDictAddStr ( d, TR_PREFS_KEY_RPC_PASSWORD, tr_sessionGetRPCPassword( s ) );
tr_bencDictAddInt ( d, TR_PREFS_KEY_RPC_PORT, tr_sessionGetRPCPort( s ) );
tr_bencDictAddStr ( d, TR_PREFS_KEY_RPC_USERNAME, tr_sessionGetRPCUsername( s ) );
tr_bencDictAddStr ( d, TR_PREFS_KEY_RPC_WHITELIST, tr_sessionGetRPCWhitelist( s ) );
tr_bencDictAddBool( d, TR_PREFS_KEY_RPC_WHITELIST_ENABLED, tr_sessionGetRPCWhitelistEnabled( s ) );
tr_bencDictAddBool( d, TR_PREFS_KEY_ALT_SPEED_ENABLED, tr_sessionUsesAltSpeed( s ) );
tr_bencDictAddInt ( d, TR_PREFS_KEY_ALT_SPEED_UP, tr_sessionGetAltSpeed( s, TR_UP ) );
tr_bencDictAddInt ( d, TR_PREFS_KEY_ALT_SPEED_DOWN, tr_sessionGetAltSpeed( s, TR_DOWN ) );
tr_bencDictAddInt ( d, TR_PREFS_KEY_ALT_SPEED_TIME_BEGIN, tr_sessionGetAltSpeedBegin( s ) );
tr_bencDictAddBool( d, TR_PREFS_KEY_ALT_SPEED_TIME_ENABLED, tr_sessionUsesAltSpeedTime( s ) );
tr_bencDictAddInt ( d, TR_PREFS_KEY_ALT_SPEED_TIME_END, tr_sessionGetAltSpeedEnd( s ) );
tr_bencDictAddInt ( d, TR_PREFS_KEY_ALT_SPEED_TIME_DAY, tr_sessionGetAltSpeedDay( s ) );
tr_bencDictAddInt ( d, TR_PREFS_KEY_USPEED, tr_sessionGetSpeedLimit( s, TR_UP ) );
tr_bencDictAddBool( d, TR_PREFS_KEY_USPEED_ENABLED, tr_sessionIsSpeedLimited( s, TR_UP ) );
tr_bencDictAddInt ( d, TR_PREFS_KEY_UMASK, s->umask );
tr_bencDictAddInt ( d, TR_PREFS_KEY_UPLOAD_SLOTS_PER_TORRENT, s->uploadSlotsPerTorrent );
tr_bencDictAddStr ( d, TR_PREFS_KEY_BIND_ADDRESS_IPV4, tr_ntop_non_ts( &s->public_ipv4->addr ) );
tr_bencDictAddStr ( d, TR_PREFS_KEY_BIND_ADDRESS_IPV6, tr_ntop_non_ts( &s->public_ipv6->addr ) );
}
void
tr_sessionLoadSettings( tr_benc * d, const char * configDir, const char * appName )
{
char * filename;
tr_benc fileSettings;
tr_benc sessionDefaults;
tr_benc tmp;
assert( tr_bencIsDict( d ) );
/* 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. */
tr_bencInitDict( &sessionDefaults, 0 );
tr_sessionGetDefaultSettings( &sessionDefaults );
tr_bencMergeDicts( &sessionDefaults, d );
tmp = *d; *d = sessionDefaults; sessionDefaults = tmp;
/* if caller didn't specify a config dir, use the default */
if( !configDir || !*configDir )
configDir = tr_getDefaultConfigDir( appName );
/* file settings override the defaults */
filename = tr_buildPath( configDir, "settings.json", NULL );
if( !tr_bencLoadFile( &fileSettings, TR_FMT_JSON, filename ) ) {
tr_bencMergeDicts( d, &fileSettings );
tr_bencFree( &fileSettings );
}
/* cleanup */
tr_bencFree( &sessionDefaults );
tr_free( filename );
}
void
tr_sessionSaveSettings( tr_session * session,
const char * configDir,
const tr_benc * clientSettings )
{
tr_benc settings;
char * filename = tr_buildPath( configDir, "settings.json", NULL );
assert( tr_bencIsDict( clientSettings ) );
tr_bencInitDict( &settings, 0 );
/* the existing file settings are the fallback values */
{
tr_benc fileSettings;
if( !tr_bencLoadFile( &fileSettings, TR_FMT_JSON, filename ) )
{
tr_bencMergeDicts( &settings, &fileSettings );
tr_bencFree( &fileSettings );
}
}
/* the client's settings override the file settings */
tr_bencMergeDicts( &settings, clientSettings );
/* the session's true values override the file & client settings */
{
tr_benc sessionSettings;
tr_bencInitDict( &sessionSettings, 0 );
tr_sessionGetSettings( session, &sessionSettings );
tr_bencMergeDicts( &settings, &sessionSettings );
tr_bencFree( &sessionSettings );
}
/* save the result */
tr_bencToFile( &settings, TR_FMT_JSON, filename );
tr_inf( "Saved \"%s\"", filename );
/* cleanup */
tr_free( filename );
tr_bencFree( &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( int foo UNUSED, short bar UNUSED, void * vsession )
{
tr_torrent * tor = NULL;
tr_session * session = vsession;
while(( tor = tr_torrentNext( session, tor )))
tr_torrentSave( tor );
tr_timerAdd( session->saveTimer, SAVE_INTERVAL_SECS, 0 );
}
/***
****
***/
static void tr_sessionInitImpl( void * );
static void onAltTimer( int, short, void* );
static void setAltTimer( tr_session * session );
struct init_data
{
tr_session * session;
const char * configDir;
tr_bool messageQueuingEnabled;
tr_benc * clientSettings;
};
tr_session *
tr_sessionInit( const char * tag,
const char * configDir,
tr_bool messageQueuingEnabled,
tr_benc * clientSettings )
{
tr_session * session;
struct init_data data;
assert( tr_bencIsDict( clientSettings ) );
/* initialize the bare skeleton of the session object */
session = tr_new0( tr_session, 1 );
session->bandwidth = tr_bandwidthNew( session, NULL );
session->lock = tr_lockNew( );
session->tag = tr_strdup( tag );
session->magicNumber = SESSION_MAGIC_NUMBER;
tr_bencInitList( &session->removedTorrents, 0 );
/* start the libtransmission thread */
tr_netInit( ); /* must go before tr_eventInit */
tr_eventInit( session );
assert( session->events != NULL );
/* run the rest in the libtransmission thread */
session->isWaiting = TRUE;
data.session = session;
data.configDir = configDir;
data.messageQueuingEnabled = messageQueuingEnabled;
data.clientSettings = clientSettings;
tr_runInEventThread( session, tr_sessionInitImpl, &data );
while( session->isWaiting )
tr_wait( 100 );
return session;
}
static void useAltSpeed( tr_session * session, tr_bool enabled, tr_bool byUser );
static void useAltSpeedTime( tr_session * session, tr_bool enabled, tr_bool byUser );
static void
tr_sessionInitImpl( void * vdata )
{
int64_t i;
int64_t j;
double d;
tr_bool found;
tr_bool boolVal;
const char * str;
tr_benc settings;
char * filename;
struct init_data * data = vdata;
tr_benc * clientSettings = data->clientSettings;
tr_session * session = data->session;
assert( tr_amInEventThread( session ) );
assert( tr_bencIsDict( clientSettings ) );
dbgmsg( "tr_sessionInit: the session's top-level bandwidth object is %p", session->bandwidth );
tr_bencInitDict( &settings, 0 );
tr_sessionGetDefaultSettings( &settings );
tr_bencMergeDicts( &settings, clientSettings );
#ifndef WIN32
/* Don't exit when writing on a broken socket */
signal( SIGPIPE, SIG_IGN );
#endif
/* set the session's file mode creation mask (umask) to session->umask & 0777 */
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_UMASK, &i );
assert( found );
session->umask = (mode_t)i;
umask( session->umask );
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_PEER_LIMIT_TORRENT, &i );
assert( found );
session->peerLimitPerTorrent = i;
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_MSGLEVEL, &i );
assert( found );
tr_setMessageLevel( i );
tr_setMessageQueuing( data->messageQueuingEnabled );
found = tr_bencDictFindBool( &settings, TR_PREFS_KEY_PEX_ENABLED, &boolVal );
assert( found );
session->isPexEnabled = boolVal;
found = tr_bencDictFindBool( &settings, TR_PREFS_KEY_DHT_ENABLED, &boolVal );
assert( found );
session->isDHTEnabled = boolVal;
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_ENCRYPTION, &i );
assert( found );
assert( tr_isEncryptionMode( i ) );
session->encryptionMode = i;
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_PREALLOCATION, &i );
assert( found );
assert( tr_isPreallocationMode( i ) );
session->preallocationMode = i;
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_PEER_SOCKET_TOS, &i );
assert( found );
session->peerSocketTOS = i;
found = tr_bencDictFindStr( &settings, TR_PREFS_KEY_DOWNLOAD_DIR, &str );
assert( found );
session->downloadDir = tr_strdup( str );
found = tr_bencDictFindBool( &settings, TR_PREFS_KEY_PROXY_ENABLED, &boolVal );
assert( found );
session->isProxyEnabled = boolVal;
found = tr_bencDictFindStr( &settings, TR_PREFS_KEY_PROXY, &str );
assert( found );
session->proxy = tr_strdup( str );
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_PROXY_PORT, &i );
assert( found );
session->proxyPort = i;
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_PROXY_TYPE, &i );
assert( found );
session->proxyType = i;
found = tr_bencDictFindBool( &settings, TR_PREFS_KEY_PROXY_AUTH_ENABLED, &boolVal );
assert( found );
session->isProxyAuthEnabled = boolVal;
found = tr_bencDictFindStr( &settings, TR_PREFS_KEY_PROXY_USERNAME, &str );
assert( found );
session->proxyUsername = tr_strdup( str );
found = tr_bencDictFindStr( &settings, TR_PREFS_KEY_PROXY_PASSWORD, &str );
assert( found );
session->proxyPassword = tr_strdup( str );
session->so_sndbuf = 1500 * 3; /* 3x MTU for most ethernet/wireless */
session->so_rcvbuf = 8192;
tr_setConfigDir( session, data->configDir );
tr_trackerSessionInit( session );
assert( session->tracker != NULL );
session->peerMgr = tr_peerMgrNew( session );
found = tr_bencDictFindBool( &settings, TR_PREFS_KEY_LAZY_BITFIELD, &boolVal );
assert( found );
session->useLazyBitfield = boolVal;
/* Initialize rate and file descripts controls */
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_OPEN_FILE_LIMIT, &i );
assert( found );
session->openFileLimit = i;
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_PEER_LIMIT_GLOBAL, &j );
assert( found );
tr_fdInit( session->openFileLimit, j );
/**
*** random port
**/
found = tr_bencDictFindBool( &settings, TR_PREFS_KEY_PEER_PORT_RANDOM_ON_START, &boolVal );
assert( found );
session->isPortRandom = boolVal;
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_PEER_PORT_RANDOM_LOW, &i );
assert( found );
session->randomPortLow = i;
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_PEER_PORT_RANDOM_HIGH, &i );
assert( found );
session->randomPortHigh = i;
found = tr_bencDictFindBool( &settings, TR_PREFS_KEY_PORT_FORWARDING, &boolVal )
&& tr_bencDictFindInt( &settings, TR_PREFS_KEY_PEER_PORT, &j );
assert( found );
session->peerPort = session->isPortRandom ? getRandomPort( session ) : j;
/* public addresses */
{
struct tr_bindinfo b;
const char * str;
str = TR_PREFS_KEY_BIND_ADDRESS_IPV4;
tr_bencDictFindStr( &settings, TR_PREFS_KEY_BIND_ADDRESS_IPV4, &str );
if( !tr_pton( str, &b.addr ) || ( b.addr.type != TR_AF_INET ) )
b.addr = tr_inaddr_any;
b.socket = -1;
session->public_ipv4 = tr_memdup( &b, sizeof( struct tr_bindinfo ) );
str = TR_PREFS_KEY_BIND_ADDRESS_IPV6;
tr_bencDictFindStr( &settings, TR_PREFS_KEY_BIND_ADDRESS_IPV6, &str );
if( !tr_pton( str, &b.addr ) || ( b.addr.type != TR_AF_INET6 ) )
b.addr = tr_in6addr_any;
b.socket = -1;
session->public_ipv6 = tr_memdup( &b, sizeof( struct tr_bindinfo ) );
open_incoming_peer_port( session );
}
session->shared = tr_sharedInit( session, boolVal );
/**
**/
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_UPLOAD_SLOTS_PER_TORRENT, &i );
assert( found );
session->uploadSlotsPerTorrent = i;
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_USPEED, &i )
&& tr_bencDictFindBool( &settings, TR_PREFS_KEY_USPEED_ENABLED, &boolVal );
assert( found );
tr_sessionSetSpeedLimit( session, TR_UP, i );
tr_sessionLimitSpeed( session, TR_UP, boolVal );
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_DSPEED, &i )
&& tr_bencDictFindBool( &settings, TR_PREFS_KEY_DSPEED_ENABLED, &boolVal );
assert( found );
tr_sessionSetSpeedLimit( session, TR_DOWN, i );
tr_sessionLimitSpeed( session, TR_DOWN, boolVal );
found = tr_bencDictFindReal( &settings, TR_PREFS_KEY_RATIO, &d )
&& tr_bencDictFindBool( &settings, TR_PREFS_KEY_RATIO_ENABLED, &boolVal );
assert( found );
tr_sessionSetRatioLimit( session, d );
tr_sessionSetRatioLimited( session, boolVal );
/**
*** Alternate speed limits
**/
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_ALT_SPEED_UP, &i );
assert( found );
session->altSpeed[TR_UP] = i;
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_ALT_SPEED_DOWN, &i );
assert( found );
session->altSpeed[TR_DOWN] = i;
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_ALT_SPEED_TIME_BEGIN, &i );
assert( found );
session->altSpeedTimeBegin = i;
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_ALT_SPEED_TIME_END, &i );
assert( found );
session->altSpeedTimeEnd = i;
found = tr_bencDictFindInt( &settings, TR_PREFS_KEY_ALT_SPEED_TIME_DAY, &i );
assert( found );
session->altSpeedTimeDay = i;
found = tr_bencDictFindBool( &settings, TR_PREFS_KEY_ALT_SPEED_TIME_ENABLED, &boolVal );
assert( found );
useAltSpeedTime( session, boolVal, FALSE );
if( !boolVal )
{
found = tr_bencDictFindBool( &settings, TR_PREFS_KEY_ALT_SPEED_ENABLED, &boolVal );
assert( found );
useAltSpeed( session, boolVal, FALSE );
}
else
useAltSpeed( session, isAltTime( session ), FALSE );
/**
*** Blocklist
**/
filename = tr_buildPath( session->configDir, "blocklists", NULL );
tr_mkdirp( filename, 0777 );
tr_free( filename );
found = tr_bencDictFindBool( &settings, TR_PREFS_KEY_BLOCKLIST_ENABLED, &boolVal );
assert( found );
session->isBlocklistEnabled = boolVal;
loadBlocklists( session );
session->rpcServer = tr_rpcInit( session, &settings );
tr_bencFree( &settings );
assert( tr_isSession( session ) );
session->altTimer = tr_new0( struct event, 1 );
evtimer_set( session->altTimer, onAltTimer, session );
setAltTimer( session );
session->saveTimer = tr_new0( struct event, 1 );
evtimer_set( session->saveTimer, onSaveTimer, session );
tr_timerAdd( session->saveTimer, SAVE_INTERVAL_SECS, 0 );
/* first %s is the application name
second %s is the version number */
tr_inf( _( "%s %s started" ), TR_NAME, LONG_VERSION_STRING );
tr_statsInit( session );
session->web = tr_webInit( session );
session->isWaiting = FALSE;
dbgmsg( "returning session %p; session->tracker is %p", session, session->tracker );
if( session->isDHTEnabled )
{
tr_dhtInit( session, &session->public_ipv4->addr );
}
}
/***
****
***/
void
tr_sessionSetDownloadDir( tr_session * session, const char * dir )
{
assert( tr_isSession( session ) );
if( session->downloadDir != dir )
{
tr_free( session->downloadDir );
session->downloadDir = tr_strdup( dir );
}
}
const char *
tr_sessionGetDownloadDir( const tr_session * session )
{
assert( tr_isSession( session ) );
return session->downloadDir;
}
/***
****
***/
void
tr_globalLock( tr_session * session )
{
assert( tr_isSession( session ) );
tr_lockLock( session->lock );
}
void
tr_globalUnlock( tr_session * session )
{
assert( tr_isSession( session ) );
tr_lockUnlock( session->lock );
}
tr_bool
tr_globalIsLocked( const tr_session * session )
{
return tr_isSession( session ) && tr_lockHave( session->lock );
}
/***********************************************************************
* tr_setBindPort
***********************************************************************
*
**********************************************************************/
static void
setPeerPort( void * session )
{
tr_torrent * tor = NULL;
assert( tr_isSession( session ) );
close_incoming_peer_port( session );
open_incoming_peer_port( session );
tr_sharedPortChanged( session );
while(( tor = tr_torrentNext( session, tor )))
tr_torrentChangeMyPort( tor );
}
void
tr_sessionSetPeerPort( tr_session * session,
tr_port port )
{
assert( tr_isSession( session ) );
session->peerPort = port;
tr_runInEventThread( session, setPeerPort, session );
}
tr_port
tr_sessionGetPeerPort( const tr_session * session )
{
assert( tr_isSession( session ) );
return session->peerPort;
}
tr_port
tr_sessionSetPeerPortRandom( tr_session * session )
{
assert( tr_isSession( session ) );
tr_sessionSetPeerPort( session, getRandomPort( session ) );
return session->peerPort;
}
void
tr_sessionSetPeerPortRandomOnStart( tr_session * session,
tr_bool random )
{
assert( tr_isSession( session ) );
session->isPortRandom = random;
}
tr_bool
tr_sessionGetPeerPortRandomOnStart( tr_session * session )
{
assert( tr_isSession( session ) );
return session->isPortRandom;
}
tr_port_forwarding
tr_sessionGetPortForwarding( const tr_session * session )
{
assert( tr_isSession( session ) );
return tr_sharedTraversalStatus( session->shared );
}
/***
****
***/
static void
updateSeedRatio( tr_session * session )
{
tr_torrent * tor = NULL;
while(( tor = tr_torrentNext( session, tor )))
tor->needsSeedRatioCheck = TRUE;
}
void
tr_sessionSetRatioLimited( tr_session * session, tr_bool isLimited )
{
assert( tr_isSession( session ) );
session->isRatioLimited = isLimited;
updateSeedRatio( session );
}
void
tr_sessionSetRatioLimit( tr_session * session, double desiredRatio )
{
assert( tr_isSession( session ) );
session->desiredRatio = desiredRatio;
updateSeedRatio( session );
}
tr_bool
tr_sessionIsRatioLimited( const tr_session * session )
{
assert( tr_isSession( session ) );
return session->isRatioLimited;
}
double
tr_sessionGetRatioLimit( const tr_session * session )
{
assert( tr_isSession( session ) );
return session->desiredRatio;
}
/***
**** SPEED LIMITS
***/
tr_bool
tr_sessionGetActiveSpeedLimit( const tr_session * session, tr_direction dir, int * setme )
{
int isLimited = TRUE;
if( !tr_isSession( session ) )
return FALSE;
if( tr_sessionUsesAltSpeed( session ) )
*setme = tr_sessionGetAltSpeed( session, dir );
else if( tr_sessionIsSpeedLimited( session, dir ) )
*setme = tr_sessionGetSpeedLimit( session, dir );
else
isLimited = FALSE;
return isLimited;
}
static void
updateBandwidth( tr_session * session, tr_direction dir )
{
int limit = 0;
const tr_bool isLimited = tr_sessionGetActiveSpeedLimit( session, dir, &limit );
const tr_bool zeroCase = isLimited && !limit;
tr_bandwidthSetLimited( session->bandwidth, dir, isLimited && !zeroCase );
tr_bandwidthSetDesiredSpeed( session->bandwidth, dir, limit );
}
static void
altSpeedToggled( void * vsession )
{
tr_session * session = vsession;
assert( tr_isSession( session ) );
updateBandwidth( session, TR_UP );
updateBandwidth( session, TR_DOWN );
if( session->altCallback != NULL )
(*session->altCallback)( session, session->altSpeedEnabled, session->altSpeedChangedByUser, session->altCallbackUserData );
}
/* tell the alt speed limit timer to fire again at the top of the minute */
static void
setAltTimer( tr_session * session )
{
const time_t now = time( NULL );
struct tm tm;
assert( tr_isSession( session ) );
assert( session->altTimer != NULL );
tr_localtime_r( &now, &tm );
tr_timerAdd( session->altTimer, 60-tm.tm_sec, 0 );
}
/* this is called once a minute to:
* (1) update session->isAltTime
* (2) alter the speed limits when the alt limits go on and off */
static void
onAltTimer( int foo UNUSED, short bar UNUSED, void * vsession )
{
tr_session * session = vsession;
assert( tr_isSession( session ) );
if( session->altSpeedTimeEnabled )
{
const time_t now = time( NULL );
struct tm tm;
int currentMinute, day;
tr_bool isBeginTime, isEndTime, isDay;
tr_localtime_r( &now, &tm );
currentMinute = tm.tm_hour*60 + tm.tm_min;
day = tm.tm_wday;
isBeginTime = currentMinute == session->altSpeedTimeBegin;
isEndTime = currentMinute == session->altSpeedTimeEnd;
if( isBeginTime || isEndTime )
{
/* if looking at the end date, look at the next day if end time is before begin time */
if( isEndTime && !isBeginTime && session->altSpeedTimeEnd < session->altSpeedTimeBegin )
day = (day - 1) % 7;
isDay = ((1<<day) & session->altSpeedTimeDay) != 0;
if( isDay )
useAltSpeed( session, isBeginTime, FALSE );
}
}
setAltTimer( session );
}
/***
**** Primary session speed limits
***/
void
tr_sessionSetSpeedLimit( tr_session * s, tr_direction d, int KB_s )
{
assert( tr_isSession( s ) );
assert( tr_isDirection( d ) );
assert( KB_s >= 0 );
s->speedLimit[d] = KB_s;
updateBandwidth( s, d );
}
int
tr_sessionGetSpeedLimit( const tr_session * s, tr_direction d )
{
assert( tr_isSession( s ) );
assert( tr_isDirection( d ) );
return s->speedLimit[d];
}
void
tr_sessionLimitSpeed( tr_session * s, tr_direction d, tr_bool b )
{
assert( tr_isSession( s ) );
assert( tr_isDirection( d ) );
assert( tr_isBool( b ) );
s->speedLimitEnabled[d] = b;
updateBandwidth( s, d );
}
tr_bool
tr_sessionIsSpeedLimited( const tr_session * s, tr_direction d )
{
assert( tr_isSession( s ) );
assert( tr_isDirection( d ) );
return s->speedLimitEnabled[d];
}
/***
**** Alternative speed limits that are used during scheduled times
***/
void
tr_sessionSetAltSpeed( tr_session * s, tr_direction d, int KB_s )
{
assert( tr_isSession( s ) );
assert( tr_isDirection( d ) );
assert( KB_s >= 0 );
s->altSpeed[d] = KB_s;
updateBandwidth( s, d );
}
int
tr_sessionGetAltSpeed( const tr_session * s, tr_direction d )
{
assert( tr_isSession( s ) );
assert( tr_isDirection( d ) );
return s->altSpeed[d];
}
void
useAltSpeedTime( tr_session * session, tr_bool enabled, tr_bool byUser )
{
assert( tr_isSession( session ) );
assert( tr_isBool( enabled ) );
assert( tr_isBool( byUser ) );
if( session->altSpeedTimeEnabled != enabled )
{
const tr_bool isAlt = isAltTime( session );
session->altSpeedTimeEnabled = enabled;
if( enabled && session->altSpeedEnabled != isAlt )
useAltSpeed( session, isAlt, byUser );
}
}
void
tr_sessionUseAltSpeedTime( tr_session * s, tr_bool b )
{
useAltSpeedTime( s, b, TRUE );
}
tr_bool
tr_sessionUsesAltSpeedTime( const tr_session * s )
{
assert( tr_isSession( s ) );
return s->altSpeedTimeEnabled;
}
void
tr_sessionSetAltSpeedBegin( tr_session * s, int minutes )
{
assert( tr_isSession( s ) );
assert( 0<=minutes && minutes<(60*24) );
if( s->altSpeedTimeBegin != minutes )
{
s->altSpeedTimeBegin = minutes;
if( tr_sessionUsesAltSpeedTime( s ) )
useAltSpeed( s, isAltTime( s ), TRUE );
}
}
int
tr_sessionGetAltSpeedBegin( const tr_session * s )
{
assert( tr_isSession( s ) );
return s->altSpeedTimeBegin;
}
void
tr_sessionSetAltSpeedEnd( tr_session * s, int minutes )
{
assert( tr_isSession( s ) );
assert( 0<=minutes && minutes<(60*24) );
if( s->altSpeedTimeEnd != minutes )
{
s->altSpeedTimeEnd = minutes;
if( tr_sessionUsesAltSpeedTime( s ) )
useAltSpeed( s, isAltTime( s ), TRUE );
}
}
int
tr_sessionGetAltSpeedEnd( const tr_session * s )
{
assert( tr_isSession( s ) );
return s->altSpeedTimeEnd;
}
void
tr_sessionSetAltSpeedDay( tr_session * s, tr_sched_day day )
{
assert( tr_isSession( s ) );
if( s->altSpeedTimeDay != day )
{
s->altSpeedTimeDay = day;
if( tr_sessionUsesAltSpeedTime( s ) )
useAltSpeed( s, isAltTime( s ), TRUE );
}
}
tr_sched_day
tr_sessionGetAltSpeedDay( const tr_session * s )
{
assert( tr_isSession( s ) );
return s->altSpeedTimeDay;
}
void
useAltSpeed( tr_session * s, tr_bool enabled, tr_bool byUser )
{
assert( tr_isSession( s ) );
assert( tr_isBool( enabled ) );
assert( tr_isBool( byUser ) );
if( s->altSpeedEnabled != enabled)
{
s->altSpeedEnabled = enabled;
s->altSpeedChangedByUser = byUser;
tr_runInEventThread( s, altSpeedToggled, s );
}
}
void
tr_sessionUseAltSpeed( tr_session * session, tr_bool enabled )
{
useAltSpeed( session, enabled, TRUE );
}
tr_bool
tr_sessionUsesAltSpeed( const tr_session * s )
{
assert( tr_isSession( s ) );
return s->altSpeedEnabled;
}
void
tr_sessionSetAltSpeedFunc( tr_session * session,
tr_altSpeedFunc func,
void * userData )
{
assert( tr_isSession( session ) );
session->altCallback = func;
session->altCallbackUserData = userData;
}
void
tr_sessionClearAltSpeedFunc( tr_session * session )
{
tr_sessionSetAltSpeedFunc( session, NULL, NULL );
}
/***
****
***/
void
tr_sessionSetPeerLimit( tr_session * session, uint16_t maxGlobalPeers )
{
assert( tr_isSession( session ) );
tr_fdSetPeerLimit( maxGlobalPeers );
}
uint16_t
tr_sessionGetPeerLimit( const tr_session * session )
{
assert( tr_isSession( session ) );
return tr_fdGetPeerLimit( );
}
void
tr_sessionSetPeerLimitPerTorrent( tr_session * session, uint16_t n )
{
assert( tr_isSession( session ) );
session->peerLimitPerTorrent = n;
}
uint16_t
tr_sessionGetPeerLimitPerTorrent( const tr_session * session )
{
assert( tr_isSession( session ) );
return session->peerLimitPerTorrent;
}
/***
****
***/
double
tr_sessionGetPieceSpeed( const tr_session * session, tr_direction dir )
{
return tr_isSession( session ) ? tr_bandwidthGetPieceSpeed( session->bandwidth, 0, dir ) : 0.0;
}
double
tr_sessionGetRawSpeed( const tr_session * session, tr_direction dir )
{
return tr_isSession( session ) ? tr_bandwidthGetPieceSpeed( session->bandwidth, 0, dir ) : 0.0;
}
int
tr_sessionCountTorrents( const tr_session * session )
{
return tr_isSession( session ) ? session->torrentCount : 0;
}
static int
compareTorrentByCur( const void * va, const void * vb )
{
const tr_torrent * a = *(const tr_torrent**)va;
const tr_torrent * b = *(const tr_torrent**)vb;
const uint64_t aCur = a->downloadedCur + a->uploadedCur;
const uint64_t bCur = b->downloadedCur + b->uploadedCur;
if( aCur != bCur )
return aCur > bCur ? -1 : 1; /* close the biggest torrents first */
return 0;
}
static void
sessionCloseImpl( void * vsession )
{
tr_session * session = vsession;
tr_torrent * tor;
int i, n;
tr_torrent ** torrents;
assert( tr_isSession( session ) );
free_incoming_peer_port( session );
if( session->isDHTEnabled )
tr_dhtUninit( session );
evtimer_del( session->saveTimer );
tr_free( session->saveTimer );
session->saveTimer = NULL;
evtimer_del( session->altTimer );
tr_free( session->altTimer );
session->altTimer = NULL;
tr_verifyClose( session );
tr_statsClose( 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. */
tor = NULL;
n = session->torrentCount;
torrents = tr_new( tr_torrent *, session->torrentCount );
for( i = 0; i < n; ++i )
torrents[i] = tor = tr_torrentNext( session, tor );
qsort( torrents, n, sizeof( tr_torrent* ), compareTorrentByCur );
for( i = 0; i < n; ++i )
tr_torrentFree( torrents[i] );
tr_free( torrents );
tr_peerMgrFree( session->peerMgr );
tr_trackerSessionClose( session );
tr_list_free( &session->blocklists,
(TrListForeachFunc)_tr_blocklistFree );
tr_webClose( &session->web );
session->isClosed = TRUE;
}
static int
deadlineReached( const uint64_t deadline )
{
return tr_date( ) >= deadline;
}
#define SHUTDOWN_MAX_SECONDS 30
void
tr_sessionClose( tr_session * session )
{
const int maxwait_msec = SHUTDOWN_MAX_SECONDS * 1000;
const uint64_t deadline = tr_date( ) + maxwait_msec;
assert( tr_isSession( session ) );
dbgmsg( "shutting down transmission session %p", session );
/* close the session */
tr_runInEventThread( session, sessionCloseImpl, session );
while( !session->isClosed && !deadlineReached( deadline ) )
{
dbgmsg(
"waiting for the shutdown commands to run in the main thread" );
tr_wait( 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
|| session->tracker ) && !deadlineReached( deadline ) )
{
dbgmsg( "waiting on port unmap (%p) or tracker (%p)",
session->shared, session->tracker );
tr_wait( 100 );
}
tr_fdClose( );
/* close the libtransmission thread */
tr_eventClose( session );
while( session->events && !deadlineReached( deadline ) )
{
dbgmsg( "waiting for the libevent thread to shutdown cleanly" );
tr_wait( 100 );
}
/* free the session memory */
tr_bencFree( &session->removedTorrents );
tr_bandwidthFree( session->bandwidth );
tr_lockFree( session->lock );
if( session->metainfoLookup ) {
tr_bencFree( session->metainfoLookup );
tr_free( session->metainfoLookup );
}
tr_free( session->tag );
tr_free( session->configDir );
tr_free( session->resumeDir );
tr_free( session->torrentDir );
tr_free( session->downloadDir );
tr_free( session->proxy );
tr_free( session->proxyUsername );
tr_free( session->proxyPassword );
tr_free( session );
}
tr_torrent **
tr_sessionLoadTorrents( tr_session * session,
tr_ctor * ctor,
int * setmeCount )
{
int i, n = 0;
struct stat sb;
DIR * odir = NULL;
const char * dirname = tr_getTorrentDir( session );
tr_torrent ** torrents;
tr_list * l = NULL, *list = NULL;
assert( tr_isSession( session ) );
tr_ctorSetSave( ctor, FALSE ); /* since we already have them */
if( !stat( dirname, &sb )
&& S_ISDIR( sb.st_mode )
&& ( ( odir = opendir ( dirname ) ) ) )
{
struct dirent *d;
for( d = readdir( odir ); d != NULL; d = readdir( odir ) )
{
if( d->d_name && d->d_name[0] != '.' ) /* skip dotfiles, ., and ..
*/
{
tr_torrent * tor;
char * path = tr_buildPath( dirname, d->d_name, NULL );
tr_ctorSetMetainfoFromFile( ctor, path );
if(( tor = tr_torrentNew( ctor, NULL )))
{
tr_list_append( &list, tor );
++n;
}
tr_free( path );
}
}
closedir( odir );
}
torrents = tr_new( tr_torrent *, n );
for( i = 0, l = list; l != NULL; l = l->next )
torrents[i++] = (tr_torrent*) l->data;
assert( i == n );
tr_list_free( &list, NULL );
if( n )
tr_inf( _( "Loaded %d torrents" ), n );
if( setmeCount )
*setmeCount = n;
return torrents;
}
/***
****
***/
void
tr_sessionSetPexEnabled( tr_session * session,
tr_bool enabled )
{
assert( tr_isSession( session ) );
session->isPexEnabled = enabled != 0;
}
tr_bool
tr_sessionIsPexEnabled( const tr_session * session )
{
assert( tr_isSession( session ) );
return session->isPexEnabled;
}
tr_bool
tr_sessionAllowsDHT( const tr_session * session UNUSED )
{
return tr_sessionIsDHTEnabled( session );
}
tr_bool
tr_sessionIsDHTEnabled( const tr_session * session )
{
assert( tr_isSession( session ) );
return session->isDHTEnabled;
}
static void
toggleDHTImpl( void * data )
{
tr_session * session = data;
assert( tr_isSession( session ) );
if( session->isDHTEnabled )
tr_dhtUninit( session );
session->isDHTEnabled = !session->isDHTEnabled;
if( session->isDHTEnabled )
tr_dhtInit( session, &session->public_ipv4->addr );
}
void
tr_sessionSetDHTEnabled( tr_session * session, tr_bool enabled )
{
assert( tr_isSession( session ) );
assert( tr_isBool( enabled ) );
if( ( enabled != 0 ) != ( session->isDHTEnabled != 0 ) )
tr_runInEventThread( session, toggleDHTImpl, session );
}
/***
****
***/
void
tr_sessionSetLazyBitfieldEnabled( tr_session * session,
tr_bool enabled )
{
assert( tr_isSession( session ) );
session->useLazyBitfield = enabled != 0;
}
tr_bool
tr_sessionIsLazyBitfieldEnabled( const tr_session * session )
{
assert( tr_isSession( session ) );
return session->useLazyBitfield;
}
/***
****
***/
void
tr_sessionSetPortForwardingEnabled( tr_session * session,
tr_bool enabled )
{
assert( tr_isSession( session ) );
tr_globalLock( session );
tr_sharedTraversalEnable( session->shared, enabled );
tr_globalUnlock( session );
}
tr_bool
tr_sessionIsPortForwardingEnabled( const tr_session * session )
{
assert( tr_isSession( session ) );
return tr_sharedTraversalIsEnabled( session->shared );
}
/***
****
***/
int
tr_blocklistGetRuleCount( const tr_session * session )
{
int n = 0;
tr_list * l;
assert( tr_isSession( session ) );
for( l = session->blocklists; l; l = l->next )
n += _tr_blocklistGetRuleCount( l->data );
return n;
}
tr_bool
tr_blocklistIsEnabled( const tr_session * session )
{
assert( tr_isSession( session ) );
return session->isBlocklistEnabled;
}
void
tr_blocklistSetEnabled( tr_session * session,
tr_bool isEnabled )
{
tr_list * l;
assert( tr_isSession( session ) );
session->isBlocklistEnabled = isEnabled != 0;
for( l=session->blocklists; l!=NULL; l=l->next )
_tr_blocklistSetEnabled( l->data, isEnabled );
}
tr_bool
tr_blocklistExists( const tr_session * session )
{
assert( tr_isSession( session ) );
return session->blocklists != NULL;
}
int
tr_blocklistSetContent( tr_session * session,
const char * contentFilename )
{
tr_list * l;
tr_blocklist * b;
const char * defaultName = "level1.bin";
assert( tr_isSession( session ) );
for( b = NULL, l = session->blocklists; !b && l; l = l->next )
if( tr_stringEndsWith( _tr_blocklistGetFilename( l->data ),
defaultName ) )
b = l->data;
if( !b )
{
char * path = tr_buildPath( session->configDir, "blocklists", defaultName, NULL );
b = _tr_blocklistNew( path, session->isBlocklistEnabled );
tr_list_append( &session->blocklists, b );
tr_free( path );
}
return _tr_blocklistSetContent( b, contentFilename );
}
tr_bool
tr_sessionIsAddressBlocked( const tr_session * session,
const tr_address * addr )
{
tr_list * l;
assert( tr_isSession( session ) );
for( l = session->blocklists; l; l = l->next )
if( _tr_blocklistHasAddress( l->data, addr ) )
return TRUE;
return FALSE;
}
/***
****
***/
static void
metainfoLookupInit( tr_session * session )
{
struct stat sb;
const char * dirname = tr_getTorrentDir( session );
DIR * odir = NULL;
tr_ctor * ctor = NULL;
tr_benc * lookup;
int n = 0;
assert( tr_isSession( session ) );
/* walk through the directory and find the mappings */
lookup = tr_new0( tr_benc, 1 );
tr_bencInitDict( lookup, 0 );
ctor = tr_ctorNew( session );
tr_ctorSetSave( ctor, FALSE ); /* since we already have them */
if( !stat( dirname, &sb ) && S_ISDIR( sb.st_mode ) && ( ( odir = opendir( dirname ) ) ) )
{
struct dirent *d;
while(( d = readdir( odir )))
{
if( d->d_name && d->d_name[0] != '.' )
{
tr_info inf;
char * path = tr_buildPath( dirname, d->d_name, NULL );
tr_ctorSetMetainfoFromFile( ctor, path );
if( !tr_torrentParse( ctor, &inf ) )
{
++n;
tr_bencDictAddStr( lookup, inf.hashString, path );
}
tr_free( path );
}
}
closedir( odir );
}
tr_ctorFree( ctor );
session->metainfoLookup = lookup;
tr_dbg( "Found %d torrents in \"%s\"", n, dirname );
}
const char*
tr_sessionFindTorrentFile( const tr_session * session,
const char * hashString )
{
const char * filename = NULL;
if( !session->metainfoLookup )
metainfoLookupInit( (tr_session*)session );
tr_bencDictFindStr( session->metainfoLookup, hashString, &filename );
return filename;
}
void
tr_sessionSetTorrentFile( tr_session * session,
const char * hashString,
const char * 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 )
tr_bencDictAddStr( session->metainfoLookup, hashString, filename );
}
tr_torrent*
tr_torrentNext( tr_session * session,
tr_torrent * tor )
{
assert( tr_isSession( session ) );
return tor ? tor->next : session->torrentList;
}
/***
****
***/
void
tr_sessionSetRPCEnabled( tr_session * session,
tr_bool isEnabled )
{
assert( tr_isSession( session ) );
tr_rpcSetEnabled( session->rpcServer, isEnabled );
}
tr_bool
tr_sessionIsRPCEnabled( const tr_session * session )
{
assert( tr_isSession( session ) );
return tr_rpcIsEnabled( session->rpcServer );
}
void
tr_sessionSetRPCPort( tr_session * session,
tr_port port )
{
assert( tr_isSession( session ) );
tr_rpcSetPort( session->rpcServer, port );
}
tr_port
tr_sessionGetRPCPort( const tr_session * session )
{
assert( tr_isSession( session ) );
return tr_rpcGetPort( session->rpcServer );
}
void
tr_sessionSetRPCCallback( tr_session * session,
tr_rpc_func func,
void * user_data )
{
assert( tr_isSession( session ) );
session->rpc_func = func;
session->rpc_func_user_data = user_data;
}
void
tr_sessionSetRPCWhitelist( tr_session * session,
const char * whitelist )
{
assert( tr_isSession( session ) );
tr_rpcSetWhitelist( session->rpcServer, whitelist );
}
const char*
tr_sessionGetRPCWhitelist( const tr_session * session )
{
assert( tr_isSession( session ) );
return tr_rpcGetWhitelist( session->rpcServer );
}
void
tr_sessionSetRPCWhitelistEnabled( tr_session * session,
tr_bool isEnabled )
{
assert( tr_isSession( session ) );
tr_rpcSetWhitelistEnabled( session->rpcServer, isEnabled );
}
tr_bool
tr_sessionGetRPCWhitelistEnabled( const tr_session * session )
{
assert( tr_isSession( session ) );
return tr_rpcGetWhitelistEnabled( session->rpcServer );
}
void
tr_sessionSetRPCPassword( tr_session * session,
const char * password )
{
assert( tr_isSession( session ) );
tr_rpcSetPassword( session->rpcServer, password );
}
const char*
tr_sessionGetRPCPassword( const tr_session * session )
{
assert( tr_isSession( session ) );
return tr_rpcGetPassword( session->rpcServer );
}
void
tr_sessionSetRPCUsername( tr_session * session,
const char * username )
{
assert( tr_isSession( session ) );
tr_rpcSetUsername( session->rpcServer, username );
}
const char*
tr_sessionGetRPCUsername( const tr_session * session )
{
assert( tr_isSession( session ) );
return tr_rpcGetUsername( session->rpcServer );
}
void
tr_sessionSetRPCPasswordEnabled( tr_session * session,
tr_bool isEnabled )
{
assert( tr_isSession( session ) );
tr_rpcSetPasswordEnabled( session->rpcServer, isEnabled );
}
tr_bool
tr_sessionIsRPCPasswordEnabled( const tr_session * session )
{
assert( tr_isSession( session ) );
return tr_rpcIsPasswordEnabled( session->rpcServer );
}
const char *
tr_sessionGetRPCBindAddress( const tr_session * session )
{
assert( tr_isSession( session ) );
return tr_rpcGetBindAddress( session->rpcServer );
}
/***
****
***/
tr_bool
tr_sessionIsProxyEnabled( const tr_session * session )
{
assert( tr_isSession( session ) );
return session->isProxyEnabled;
}
void
tr_sessionSetProxyEnabled( tr_session * session,
tr_bool isEnabled )
{
assert( tr_isSession( session ) );
session->isProxyEnabled = isEnabled != 0;
}
tr_proxy_type
tr_sessionGetProxyType( const tr_session * session )
{
assert( tr_isSession( session ) );
return session->proxyType;
}
void
tr_sessionSetProxyType( tr_session * session,
tr_proxy_type type )
{
assert( tr_isSession( session ) );
session->proxyType = type;
}
const char*
tr_sessionGetProxy( const tr_session * session )
{
assert( tr_isSession( session ) );
return session->proxy;
}
tr_port
tr_sessionGetProxyPort( const tr_session * session )
{
assert( tr_isSession( session ) );
return session->proxyPort;
}
void
tr_sessionSetProxy( tr_session * session,
const char * proxy )
{
assert( tr_isSession( session ) );
if( proxy != session->proxy )
{
tr_free( session->proxy );
session->proxy = tr_strdup( proxy );
}
}
void
tr_sessionSetProxyPort( tr_session * session,
tr_port port )
{
assert( tr_isSession( session ) );
session->proxyPort = port;
}
tr_bool
tr_sessionIsProxyAuthEnabled( const tr_session * session )
{
assert( tr_isSession( session ) );
return session->isProxyAuthEnabled;
}
void
tr_sessionSetProxyAuthEnabled( tr_session * session,
tr_bool isEnabled )
{
assert( tr_isSession( session ) );
session->isProxyAuthEnabled = isEnabled != 0;
}
const char*
tr_sessionGetProxyUsername( const tr_session * session )
{
assert( tr_isSession( session ) );
return session->proxyUsername;
}
void
tr_sessionSetProxyUsername( tr_session * session,
const char * username )
{
assert( tr_isSession( session ) );
if( username != session->proxyUsername )
{
tr_free( session->proxyUsername );
session->proxyUsername = tr_strdup( username );
}
}
const char*
tr_sessionGetProxyPassword( const tr_session * session )
{
assert( tr_isSession( session ) );
return session->proxyPassword;
}
void
tr_sessionSetProxyPassword( tr_session * session,
const char * password )
{
assert( tr_isSession( session ) );
if( password != session->proxyPassword )
{
tr_free( session->proxyPassword );
session->proxyPassword = tr_strdup( password );
}
}
int
tr_sessionGetActiveTorrentCount( tr_session * session )
{
int ret = 0;
tr_torrent * tor = NULL;
assert( tr_isSession( session ) );
while(( tor = tr_torrentNext( session, tor )))
if( tr_torrentGetActivity( tor ) != TR_STATUS_STOPPED )
++ret;
return ret;
}
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