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transmission/libtransmission/rpc.c

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/*
* This file Copyright (C) 2008 Charles Kerr <charles@rebelbase.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 <ctype.h> /* isdigit */
#include <stdlib.h> /* strtol */
#include <string.h> /* strcmp */
#include "transmission.h"
#include "bencode.h"
#include "ratecontrol.h"
#include "rpc.h"
#include "rpc-utils.h"
#include "json.h"
#include "session.h"
#include "torrent.h"
#include "utils.h"
#define TR_N_ELEMENTS( ary ) ( sizeof( ary ) / sizeof( *ary ) )
/***
****
***/
static void
notify( tr_handle * session, int type, tr_torrent * tor )
{
if( session->rpc_func != NULL )
session->rpc_func( session, type, tor, session->rpc_func_user_data );
}
/***
****
***/
static tr_torrent **
getTorrents( tr_handle * handle, tr_benc * args, int * setmeCount )
{
int method;
int torrentCount = 0;
int64_t id;
int64_t sortAscending;
tr_torrent ** torrents = NULL;
const char * str;
tr_benc * ids;
/***
**** Build the array of torrents
***/
if( tr_bencDictFindList( args, "ids", &ids ) )
{
int i;
const int n = tr_bencListSize( ids );
torrents = tr_new0( tr_torrent*, n );
for( i=0; i<n; ++i )
{
tr_torrent * tor = NULL;
tr_benc * node = tr_bencListChild( ids, i );
int64_t id;
const char * str;
if( tr_bencGetInt( node, &id ) )
tor = tr_torrentFindFromId( handle, id );
else if( tr_bencGetStr( node, &str ) )
tor = tr_torrentFindFromHashString( handle, str );
if( tor )
torrents[torrentCount++] = tor;
}
}
else if( tr_bencDictFindInt( args, "ids", &id )
|| tr_bencDictFindInt( args, "id", &id ) )
{
tr_torrent * tor;
torrents = tr_new0( tr_torrent*, 1 );
if(( tor = tr_torrentFindFromId( handle, id )))
torrents[torrentCount++] = tor;
}
else /* all of them */
{
tr_torrent * tor = NULL;
const int n = tr_sessionCountTorrents( handle );
torrents = tr_new0( tr_torrent*, n );
while(( tor = tr_torrentNext( handle, tor )))
torrents[torrentCount++] = tor;
}
/***
**** filter the torrents
***/
method = TR_FILTER_ALL;
if( tr_bencDictFindStr( args, "filter", &str ) ) {
if( !strcmp( str, "active" ) ) method = TR_FILTER_ACTIVE;
else if( !strcmp( str, "downloading" ) ) method = TR_FILTER_DOWNLOADING;
else if( !strcmp( str, "paused" ) ) method = TR_FILTER_PAUSED;
else if( !strcmp( str, "seeding" ) ) method = TR_FILTER_SEEDING;
}
if( method != TR_FILTER_ALL )
tr_torrentFilter( torrents, &torrentCount, method );
/***
**** sort the torrents
***/
method = TR_SORT_ID;
sortAscending = 1;
tr_bencDictFindInt( args, "ascending", &sortAscending );
if( tr_bencDictFindStr( args, "sort", &str ) ) {
if( !strcmp( str, "activity" ) ) method = TR_SORT_ACTIVITY;
else if( !strcmp( str, "age" ) ) method = TR_SORT_AGE;
else if( !strcmp( str, "name" ) ) method = TR_SORT_NAME;
else if( !strcmp( str, "progress" ) ) method = TR_SORT_PROGRESS;
else if( !strcmp( str, "ratio" ) ) method = TR_SORT_RATIO;
else if( !strcmp( str, "state" ) ) method = TR_SORT_STATE;
else if( !strcmp( str, "tracker" ) ) method = TR_SORT_TRACKER;
}
tr_torrentSort( torrents, torrentCount, method, sortAscending!=0 );
/***
**** return the results
***/
*setmeCount = torrentCount;
return torrents;
}
static const char*
torrentStart( tr_handle * h, tr_benc * args_in, tr_benc * args_out UNUSED )
{
int i, torrentCount;
tr_torrent ** torrents = getTorrents( h, args_in, &torrentCount );
for( i=0; i<torrentCount; ++i )
{
tr_torrent * tor = torrents[i];
tr_torrentStart( tor );
notify( h, TR_RPC_TORRENT_STARTED, tor );
}
tr_free( torrents );
return NULL;
}
static const char*
torrentStop( tr_handle * h, tr_benc * args_in, tr_benc * args_out UNUSED )
{
int i, torrentCount;
tr_torrent ** torrents = getTorrents( h, args_in, &torrentCount );
for( i=0; i<torrentCount; ++i )
{
tr_torrent * tor = torrents[i];
tr_torrentStop( tor );
notify( h, TR_RPC_TORRENT_STOPPED, tor );
}
tr_free( torrents );
return NULL;
}
static const char*
torrentRemove( tr_handle * h, tr_benc * args_in, tr_benc * args_out UNUSED )
{
int i, torrentCount;
tr_torrent ** torrents = getTorrents( h, args_in, &torrentCount );
for( i=0; i<torrentCount; ++i )
{
tr_torrent * tor = torrents[i];
notify( h, TR_RPC_TORRENT_REMOVING, tor );
tr_torrentRemove( tor );
}
tr_free( torrents );
return NULL;
}
static const char*
torrentVerify( tr_handle * h, tr_benc * args_in, tr_benc * args_out UNUSED )
{
int i, torrentCount;
tr_torrent ** torrents = getTorrents( h, args_in, &torrentCount );
for( i=0; i<torrentCount; ++i )
{
tr_torrent * tor = torrents[i];
tr_torrentVerify( tor );
notify( h, TR_RPC_TORRENT_CHANGED, tor );
}
tr_free( torrents );
return NULL;
}
/***
****
***/
static void
addFiles( const tr_info * info, tr_benc * files )
{
tr_file_index_t i;
for( i=0; i<info->fileCount; ++i )
{
const tr_file * file = &info->files[i];
tr_benc * d = tr_bencListAddDict( files, 2 );
tr_bencDictAddInt( d, "length", file->length );
tr_bencDictAddStr( d, "name", file->name );
}
}
static void
addWebseeds( const tr_info * info, tr_benc * webseeds )
{
int i;
for( i=0; i<info->webseedCount; ++i )
tr_bencListAddStr( webseeds, info->webseeds[i] );
}
static void
addTrackers( const tr_info * info, tr_benc * trackers )
{
int i;
for( i=0; i<info->trackerCount; ++i )
{
const tr_tracker_info * t = &info->trackers[i];
tr_benc * d = tr_bencListAddDict( trackers, 3 );
tr_bencDictAddStr( d, "announce", t->announce );
tr_bencDictAddStr( d, "scrape", t->scrape );
tr_bencDictAddInt( d, "tier", t->tier );
}
}
static void
addInfo( const tr_torrent * tor, tr_benc * d, uint64_t fields )
{
const tr_info * inf = tr_torrentInfo( tor );
const tr_stat * st = tr_torrentStat( (tr_torrent*)tor );
tr_bencInitDict( d, 64 );
if( fields & TR_RPC_TORRENT_FIELD_ACTIVITY ) {
tr_bencDictAddInt( d, "desiredAvailable", st->desiredAvailable );
tr_bencDictAddInt( d, "eta", st->eta );
tr_bencDictAddInt( d, "peersConnected", st->peersConnected );
tr_bencDictAddInt( d, "peersGettingFromUs", st->peersGettingFromUs );
tr_bencDictAddInt( d, "peersSendingToUs", st->peersSendingToUs );
tr_bencDictAddInt( d, "rateDownload", (int)(st->rateDownload*1024) );
tr_bencDictAddInt( d, "rateUpload", (int)(st->rateUpload*1024) );
tr_bencDictAddDouble( d, "recheckProgress", st->recheckProgress );
tr_bencDictAddInt( d, "status", st->status );
tr_bencDictAddDouble( d, "swarmSpeed", st->swarmSpeed );
tr_bencDictAddDouble( d, "ratio", st->ratio );
tr_bencDictAddInt( d, "webseedsSendingToUs", st->webseedsSendingToUs );
}
if( fields & TR_RPC_TORRENT_FIELD_ANNOUNCE ) {
tr_bencDictAddStr( d, "announceResponse", st->announceResponse );
tr_bencDictAddStr( d, "announceURL", st->announceURL );
tr_bencDictAddInt( d, "lastAnnounceTime", st->lastAnnounceTime );
tr_bencDictAddInt( d, "manualAnnounceTime", st->manualAnnounceTime );
tr_bencDictAddInt( d, "nextAnnounceTime", st->nextAnnounceTime );
}
if( fields & TR_RPC_TORRENT_FIELD_ERROR ) {
tr_bencDictAddInt( d, "error", st->error );
tr_bencDictAddStr( d, "errorString", st->errorString );
}
if( fields & TR_RPC_TORRENT_FIELD_FILES )
addFiles( inf, tr_bencDictAddList( d, "files", inf->fileCount ) );
if( fields & TR_RPC_TORRENT_FIELD_HISTORY ) {
tr_bencDictAddInt( d, "activityDate", st->activityDate );
tr_bencDictAddInt( d, "addedDate", st->addedDate );
tr_bencDictAddInt( d, "corruptEver", st->corruptEver );
tr_bencDictAddInt( d, "doneDate", st->doneDate );
tr_bencDictAddInt( d, "downloadedEver", st->downloadedEver );
tr_bencDictAddInt( d, "startDate", st->startDate );
tr_bencDictAddInt( d, "uploadedEver", st->uploadedEver );
}
if( fields & TR_RPC_TORRENT_FIELD_ID ) {
tr_bencDictAddInt( d, "id", st->id );
tr_bencDictAddStr( d, "hashString", tor->info.hashString );
tr_bencDictAddStr( d, "name", inf->name );
}
if( fields & TR_RPC_TORRENT_FIELD_INFO ) {
tr_bencDictAddStr( d, "comment", inf->comment ? inf->comment : "" );
tr_bencDictAddStr( d, "creator", inf->creator ? inf->creator : "" );
tr_bencDictAddInt( d, "dateCreated", inf->dateCreated );
tr_bencDictAddInt( d, "pieceCount", inf->pieceCount );
tr_bencDictAddInt( d, "pieceSize", inf->pieceSize );
}
if( fields & TR_RPC_TORRENT_FIELD_LIMITS ) {
tr_bencDictAddInt( d, "downloadLimit", tr_torrentGetSpeedLimit( tor, TR_DOWN ) );
tr_bencDictAddInt( d, "downloadLimitMode", tr_torrentGetSpeedMode( tor, TR_DOWN ) );
tr_bencDictAddInt( d, "maxConnectedPeers", tr_torrentGetPeerLimit( tor ) );
tr_bencDictAddInt( d, "uploadLimit", tr_torrentGetSpeedLimit( tor, TR_UP ) );
tr_bencDictAddInt( d, "uploadLimitMode", tr_torrentGetSpeedMode( tor, TR_UP ) );
}
if( fields & TR_RPC_TORRENT_FIELD_PEERS ) {
const int * f = st->peersFrom;
tr_bencDictAddInt( d, "fromCache", f[TR_PEER_FROM_CACHE] );
tr_bencDictAddInt( d, "fromIncoming", f[TR_PEER_FROM_INCOMING] );
tr_bencDictAddInt( d, "fromPex", f[TR_PEER_FROM_PEX] );
tr_bencDictAddInt( d, "fromTracker", f[TR_PEER_FROM_TRACKER] );
}
if( fields & TR_RPC_TORRENT_FIELD_PRIORITIES ) {
tr_file_index_t i;
tr_benc * p = tr_bencDictAddList( d, "priorities", inf->fileCount );
tr_benc * w = tr_bencDictAddList( d, "wanted", inf->fileCount );
for( i=0; i<inf->fileCount; ++i ) {
tr_bencListAddInt( p, inf->files[i].priority );
tr_bencListAddInt( w, inf->files[i].dnd ? 0 : 1 );
}
}
if( fields & TR_RPC_TORRENT_FIELD_SCRAPE ) {
tr_bencDictAddInt( d, "lastScrapeTime", st->lastScrapeTime );
tr_bencDictAddInt( d, "nextScrapeTime", st->nextScrapeTime );
tr_bencDictAddStr( d, "scrapeResponse", st->scrapeResponse );
tr_bencDictAddStr( d, "scrapeURL", st->scrapeURL );
}
if( fields & TR_RPC_TORRENT_FIELD_SIZE ) {
tr_bencDictAddInt( d, "haveUnchecked", st->haveUnchecked );
tr_bencDictAddInt( d, "haveValid", st->haveValid );
tr_bencDictAddInt( d, "leftUntilDone", st->leftUntilDone );
tr_bencDictAddInt( d, "sizeWhenDone", st->sizeWhenDone );
tr_bencDictAddInt( d, "totalSize", inf->totalSize );
}
if( fields & TR_RPC_TORRENT_FIELD_TRACKER_STATS ) {
tr_bencDictAddInt( d, "leechers", st->leechers );
tr_bencDictAddInt( d, "peersKnown", st->peersKnown );
tr_bencDictAddInt( d, "seeders", st->seeders );
tr_bencDictAddDouble( d, "timesCompleted", st->timesCompleted );
}
if( fields & TR_RPC_TORRENT_FIELD_TRACKERS )
addTrackers( inf, tr_bencDictAddList( d, "trackers", inf->trackerCount ) );
if( fields & TR_RPC_TORRENT_FIELD_WEBSEEDS )
addWebseeds( inf, tr_bencDictAddList( d, "webseeds", inf->trackerCount ) );
}
static const char*
torrentGet( tr_handle * handle, tr_benc * args_in, tr_benc * args_out )
{
int i, torrentCount;
tr_torrent ** torrents = getTorrents( handle, args_in, &torrentCount );
tr_benc * list = tr_bencDictAddList( args_out, "torrents", torrentCount );
int64_t fields = 0;
if( !tr_bencDictFindInt( args_in, "fields", &fields ) )
fields = ~(int64_t)0;
tr_bencDictAddInt( args_out, "fields", fields );
for( i=0; i<torrentCount; ++i )
addInfo( torrents[i], tr_bencListAdd( list ), fields );
tr_free( torrents );
return NULL;
}
/***
****
***/
static void
setFilePriorities( tr_torrent * tor, int priority, tr_benc * list )
{
int i;
int64_t tmp;
int fileCount = 0;
const int n = tr_bencListSize( list );
tr_file_index_t * files = tr_new0( tr_file_index_t, n );
for( i=0; i<n; ++i )
if( tr_bencGetInt( tr_bencListChild( list, i ), &tmp ) )
files[fileCount++] = tmp;
if( fileCount )
tr_torrentSetFilePriorities( tor, files, fileCount, priority );
tr_free( files );
}
static void
setFileDLs( tr_torrent * tor, int do_download, tr_benc * list )
{
int i;
int64_t tmp;
int fileCount = 0;
const int n = tr_bencListSize( list );
tr_file_index_t * files = tr_new0( tr_file_index_t, n );
for( i=0; i<n; ++i )
if( tr_bencGetInt( tr_bencListChild( list, i ), &tmp ) )
files[fileCount++] = tmp;
if( fileCount )
tr_torrentSetFileDLs( tor, files, fileCount, do_download );
tr_free( files );
}
static const char*
torrentSet( tr_handle * h, tr_benc * args_in, tr_benc * args_out UNUSED )
{
int i, torrentCount;
tr_torrent ** torrents = getTorrents( h, args_in, &torrentCount );
for( i=0; i<torrentCount; ++i )
{
int64_t tmp;
tr_benc * files;
tr_torrent * tor = torrents[i];
if( tr_bencDictFindList( args_in, "files-unwanted", &files ) )
setFileDLs( tor, FALSE, files );
if( tr_bencDictFindList( args_in, "files-wanted", &files ) )
setFileDLs( tor, TRUE, files );
if( tr_bencDictFindInt( args_in, "peer-limit", &tmp ) )
tr_torrentSetPeerLimit( tor, tmp );
if( tr_bencDictFindList( args_in, "priority-high", &files ) )
setFilePriorities( tor, TR_PRI_HIGH, files );
if( tr_bencDictFindList( args_in, "priority-low", &files ) )
setFilePriorities( tor, TR_PRI_LOW, files );
if( tr_bencDictFindList( args_in, "priority-normal", &files ) )
setFilePriorities( tor, TR_PRI_NORMAL, files );
if( tr_bencDictFindInt( args_in, "speed-limit-down", &tmp ) )
tr_torrentSetSpeedLimit( tor, TR_DOWN, tmp );
if( tr_bencDictFindInt( args_in, "speed-limit-down-enabled", &tmp ) )
tr_torrentSetSpeedMode( tor, TR_DOWN, tmp ? TR_SPEEDLIMIT_SINGLE
: TR_SPEEDLIMIT_GLOBAL );
if( tr_bencDictFindInt( args_in, "speed-limit-up", &tmp ) )
tr_torrentSetSpeedLimit( tor, TR_UP, tmp );
if( tr_bencDictFindInt( args_in, "speed-limit-up-enabled", &tmp ) )
tr_torrentSetSpeedMode( tor, TR_UP, tmp ? TR_SPEEDLIMIT_SINGLE
: TR_SPEEDLIMIT_GLOBAL );
notify( h, TR_RPC_TORRENT_CHANGED, tor );
}
tr_free( torrents );
return NULL;
}
/***
****
***/
static const char*
torrentAdd( tr_handle * h, tr_benc * args_in, tr_benc * args_out )
{
const char * filename = NULL;
const char * metainfo_base64 = NULL;
tr_bencDictFindStr( args_in, "filename", &filename );
tr_bencDictFindStr( args_in, "metainfo", &metainfo_base64 );
if( !filename && !metainfo_base64 )
return "no filename or metainfo specified";
else
{
int64_t i;
int err = 0;
const char * str;
tr_ctor * ctor;
tr_torrent * tor;
ctor = tr_ctorNew( h );
/* set the metainfo */
if( filename )
tr_ctorSetMetainfoFromFile( ctor, filename );
else {
int len;
char * metainfo = tr_base64_decode( metainfo_base64, -1, &len );
tr_ctorSetMetainfo( ctor, (uint8_t*)metainfo, len );
tr_free( metainfo );
}
/* set the optional arguments */
if( tr_bencDictFindStr( args_in, "download-dir", &str ) )
tr_ctorSetDownloadDir( ctor, TR_FORCE, str );
if( tr_bencDictFindInt( args_in, "paused", &i ) )
tr_ctorSetPaused( ctor, TR_FORCE, i );
if( tr_bencDictFindInt( args_in, "peer-limit", &i ) )
tr_ctorSetPeerLimit( ctor, TR_FORCE, i );
tor = tr_torrentNew( h, ctor, &err );
tr_ctorFree( ctor );
if( tor ) {
addInfo( tor, tr_bencDictAdd( args_out, "torrent-added" ), TR_RPC_TORRENT_FIELD_ID );
notify( h, TR_RPC_TORRENT_ADDED, tor );
} else if( err == TR_EDUPLICATE ) {
return "duplicate torrent";
} else if( err == TR_EINVALID ) {
return "invalid or corrupt torrent file";
}
}
return NULL;
}
/***
****
***/
static const char*
sessionSet( tr_handle * h, tr_benc * args_in, tr_benc * args_out UNUSED )
{
int64_t i;
const char * str;
if( tr_bencDictFindStr( args_in, "download-dir", &str ) )
tr_sessionSetDownloadDir( h, str );
if( tr_bencDictFindInt( args_in, "peer-limit", &i ) )
tr_sessionSetPeerLimit( h, i );
if( tr_bencDictFindInt( args_in, "pex-allowed", &i ) )
tr_sessionSetPexEnabled( h, i );
if( tr_bencDictFindInt( args_in, "port", &i ) )
tr_sessionSetPeerPort( h, i );
if( tr_bencDictFindInt( args_in, "port-forwarding-enabled", &i ) )
tr_sessionSetPortForwardingEnabled( h, i );
if( tr_bencDictFindInt( args_in, "speed-limit-down", &i ) )
tr_sessionSetSpeedLimit( h, TR_DOWN, i );
if( tr_bencDictFindInt( args_in, "speed-limit-down-enabled", &i ) )
tr_sessionSetSpeedLimitEnabled( h, TR_DOWN, i );
if( tr_bencDictFindInt( args_in, "speed-limit-up", &i ) )
tr_sessionSetSpeedLimit( h, TR_UP, i );
if( tr_bencDictFindInt( args_in, "speed-limit-up-enabled", &i ) )
tr_sessionSetSpeedLimitEnabled( h, TR_UP, i );
if( tr_bencDictFindStr( args_in, "encryption", &str ) ) {
if( !strcmp( str, "required" ) )
tr_sessionSetEncryption( h, TR_ENCRYPTION_REQUIRED );
else if( !strcmp( str, "tolerated" ) )
tr_sessionSetEncryption( h, TR_PLAINTEXT_PREFERRED );
else
tr_sessionSetEncryption( h, TR_ENCRYPTION_PREFERRED );
}
notify( h, TR_RPC_SESSION_CHANGED, NULL );
return NULL;
}
static const char*
sessionStats( tr_handle * h, tr_benc * args_in UNUSED, tr_benc * args_out )
{
tr_benc * d = tr_bencDictAddDict( args_out, "session-stats", 10 );
tr_torrent * tor = NULL;
float up, down;
int running = 0;
int total = 0;
tr_sessionGetSpeed( h, &down, &up );
while(( tor = tr_torrentNext( h, tor ))) {
++total;
if( tor->isRunning )
++running;
}
tr_bencDictAddInt( d, "activeTorrentCount", running );
tr_bencDictAddInt( d, "downloadSpeed", (int)(down*1024) );
tr_bencDictAddInt( d, "pausedTorrentCount", total-running );
tr_bencDictAddInt( d, "torrentCount", total );
tr_bencDictAddInt( d, "uploadSpeed", (int)(up*1024) );
return NULL;
}
static const char*
sessionGet( tr_handle * h, tr_benc * args_in UNUSED, tr_benc * args_out )
{
const char * str;
tr_benc * d = tr_bencDictAddDict( args_out, "session", 10 );
tr_bencDictAddStr( d, "download-dir",
tr_sessionGetDownloadDir( h ) );
tr_bencDictAddInt( d, "peer-limit",
tr_sessionGetPeerLimit( h ) );
tr_bencDictAddInt( d, "pex-allowed",
tr_sessionIsPexEnabled( h ) );
tr_bencDictAddInt( d, "port",
tr_sessionGetPeerPort( h ) );
tr_bencDictAddInt( d, "port-forwarding-enabled",
tr_sessionIsPortForwardingEnabled( h ) );
tr_bencDictAddInt( d, "speed-limit-up",
tr_sessionGetSpeedLimit( h, TR_UP ) );
tr_bencDictAddInt( d, "speed-limit-up-enabled",
tr_sessionIsSpeedLimitEnabled( h, TR_UP ) );
tr_bencDictAddInt( d, "speed-limit-down",
tr_sessionGetSpeedLimit( h, TR_DOWN ) );
tr_bencDictAddInt( d, "speed-limit-down-enabled",
tr_sessionIsSpeedLimitEnabled( h, TR_DOWN ) );
switch( tr_sessionGetEncryption( h ) ) {
case TR_PLAINTEXT_PREFERRED: str = "tolerated"; break;
case TR_ENCRYPTION_REQUIRED: str = "required"; break;
default: str = "preferred"; break;
}
tr_bencDictAddStr( d, "encryption", str );
return NULL;
}
/***
****
***/
typedef const char* (handler)( tr_handle*, tr_benc*, tr_benc* );
struct method {
const char * name;
handler * func;
} methods[] = {
{ "session-get", sessionGet },
{ "session-set", sessionSet },
{ "session-stats", sessionStats },
{ "torrent-add", torrentAdd },
{ "torrent-get", torrentGet },
{ "torrent-remove", torrentRemove },
{ "torrent-set", torrentSet },
{ "torrent-start", torrentStart },
{ "torrent-stop", torrentStop },
{ "torrent-verify", torrentVerify }
};
static char*
request_exec( struct tr_handle * handle,
tr_benc * request,
int * response_len )
{
int64_t i;
const char * str;
char * out;
tr_benc response;
tr_benc * args_in = tr_bencDictFind( request, "arguments" );
tr_benc * args_out = NULL;
const char * result = NULL;
/* build the response skeleton */
tr_bencInitDict( &response, 3 );
args_out = tr_bencDictAddDict( &response, "arguments", 0 );
/* parse the request */
if( !tr_bencDictFindStr( request, "method", &str ) )
result = "no method name";
else {
const int n = TR_N_ELEMENTS( methods );
for( i=0; i<n; ++i )
if( !strcmp( str, methods[i].name ) )
break;
result = i==n
? "method name not recognized"
: (*methods[i].func)( handle, args_in, args_out );
}
/* serialize & return the response */
if( !result )
result = "success";
tr_bencDictAddStr( &response, "result", result );
if( tr_bencDictFindInt( request, "tag", &i ) )
tr_bencDictAddInt( &response, "tag", i );
out = tr_bencSaveAsJSON( &response, response_len );
tr_bencFree( &response );
return out;
}
char*
tr_rpc_request_exec_json( struct tr_handle * handle,
const void * request_json,
int request_len,
int * response_len )
{
tr_benc top;
int have_content;
char * ret;
if( request_len < 0 )
request_len = strlen( request_json );
have_content = !tr_jsonParse( request_json, request_len, &top, NULL );
ret = request_exec( handle, have_content ? &top : NULL, response_len );
if( have_content )
tr_bencFree( &top );
return ret;
}
/**
* Munge the URI into a usable form.
*
* We have very loose typing on this to make the URIs as simple as possible:
* - anything not a 'tag' or 'method' is automatically in 'arguments'
* - values that are all-digits are numbers
* - values that are all-digits or commas are number lists
* - all other values are strings
*/
void
tr_rpc_parse_list_str( tr_benc * setme,
const char * str_in,
size_t len )
{
char * str = tr_strndup( str_in, len );
int isNum;
int isNumList;
int commaCount;
const char * walk;
isNum = 1;
isNumList = 1;
commaCount = 0;
walk = str;
for( ; *walk && (isNumList || isNum); ++walk ) {
if( isNumList ) isNumList = *walk=='-' || isdigit(*walk) || *walk==',';
if( isNum ) isNum = *walk=='-' || isdigit(*walk);
if( *walk == ',' ) ++commaCount;
}
if( isNum )
tr_bencInitInt( setme, strtol( str, NULL, 10 ) );
else if( !isNumList )
tr_bencInitStrDup( setme, str );
else {
tr_bencInitList( setme, commaCount + 1 );
walk = str;
while( *walk ) {
char * p;
tr_bencListAddInt( setme, strtol( walk, &p, 10 ) );
if( *p!=',' )
break;
walk = p + 1;
}
}
tr_free( str );
}
char*
tr_rpc_request_exec_uri( struct tr_handle * handle,
const void * request_uri,
int request_len,
int * response_len )
{
char * ret = NULL;
tr_benc top, * args;
char * request = tr_strndup( request_uri, request_len );
const char * pch;
tr_bencInitDict( &top, 3 );
args = tr_bencDictAddDict( &top, "arguments", 0 );
/* munge the URI into a usable form.
* we have very loose typing on this to make the URIs as simple as possible:
* - anything not a 'tag' or 'method' is automatically in 'arguments'
* - values that are all-digits are numbers
* - values that are all-digits or commas are number lists
* - all other values are strings
*/
pch = strchr( request, '?' );
if( !pch ) pch = request;
while( pch )
{
const char * delim = strchr( pch, '=' );
const char * next = strchr( pch, '&' );
if( delim )
{
char * key = tr_strndup( pch, delim-pch );
int isArg = strcmp( key, "method" ) && strcmp( key, "tag" );
tr_benc * parent = isArg ? args : &top;
tr_rpc_parse_list_str( tr_bencDictAdd( parent, key ),
delim+1,
next ? (size_t)(next-(delim+1)) : strlen(delim+1) );
tr_free( key );
}
pch = next ? next+1 : NULL;
}
ret = request_exec( handle, &top, response_len );
/* cleanup */
tr_bencFree( &top );
tr_free( request );
return ret;
}
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