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transmission/libtransmission/rpc-server.c

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/*
* This file Copyright (C) Mnemosyne LLC
*
* 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 <errno.h>
#include <string.h> /* memcpy */
#include <limits.h> /* INT_MAX */
#include <unistd.h> /* close */
#ifdef HAVE_ZLIB
#include <zlib.h>
#endif
#include <event2/buffer.h>
#include <event2/event.h>
#include <event2/http.h>
#include <event2/http_struct.h> /* TODO: eventually remove this */
#include "transmission.h"
#include "bencode.h"
#include "crypto.h" /* tr_cryptoRandBuf(), tr_ssha1_matches() */
#include "fdlimit.h"
#include "list.h"
#include "net.h"
#include "platform.h"
#include "ptrarray.h"
#include "rpcimpl.h"
#include "rpc-server.h"
#include "session.h"
#include "trevent.h"
#include "utils.h"
#include "web.h"
/* session-id is used to make cross-site request forgery attacks difficult.
* Don't disable this feature unless you really know what you're doing!
* http://en.wikipedia.org/wiki/Cross-site_request_forgery
* http://shiflett.org/articles/cross-site-request-forgeries
* http://www.webappsec.org/lists/websecurity/archive/2008-04/msg00037.html */
#define REQUIRE_SESSION_ID
#define MY_NAME "RPC Server"
#define MY_REALM "Transmission"
#define TR_N_ELEMENTS( ary ) ( sizeof( ary ) / sizeof( *ary ) )
struct tr_rpc_server
{
bool isEnabled;
bool isPasswordEnabled;
bool isWhitelistEnabled;
tr_port port;
char * url;
struct in_addr bindAddress;
struct evhttp * httpd;
tr_session * session;
char * username;
char * password;
char * whitelistStr;
tr_list * whitelist;
char * sessionId;
time_t sessionIdExpiresAt;
#ifdef HAVE_ZLIB
bool isStreamInitialized;
z_stream stream;
#endif
};
#define dbgmsg( ... ) \
do { \
if( tr_deepLoggingIsActive( ) ) \
tr_deepLog( __FILE__, __LINE__, MY_NAME, __VA_ARGS__ ); \
} while( 0 )
/***
****
***/
static char*
get_current_session_id( struct tr_rpc_server * server )
{
const time_t now = tr_time( );
if( !server->sessionId || ( now >= server->sessionIdExpiresAt ) )
{
int i;
const int n = 48;
const char * pool = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
const size_t pool_size = strlen( pool );
unsigned char * buf = tr_new( unsigned char, n+1 );
tr_cryptoRandBuf( buf, n );
for( i=0; i<n; ++i )
buf[i] = pool[ buf[i] % pool_size ];
buf[n] = '\0';
tr_free( server->sessionId );
server->sessionId = (char*) buf;
server->sessionIdExpiresAt = now + (60*60); /* expire in an hour */
}
return server->sessionId;
}
/**
***
**/
static void
send_simple_response( struct evhttp_request * req,
int code,
const char * text )
{
const char * code_text = tr_webGetResponseStr( code );
struct evbuffer * body = evbuffer_new( );
evbuffer_add_printf( body, "<h1>%d: %s</h1>", code, code_text );
if( text )
evbuffer_add_printf( body, "%s", text );
evhttp_send_reply( req, code, code_text, body );
evbuffer_free( body );
}
struct tr_mimepart
{
char * headers;
int headers_len;
char * body;
int body_len;
};
static void
tr_mimepart_free( struct tr_mimepart * p )
{
tr_free( p->body );
tr_free( p->headers );
tr_free( p );
}
static void
extract_parts_from_multipart( const struct evkeyvalq * headers,
struct evbuffer * body,
tr_ptrArray * setme_parts )
{
const char * content_type = evhttp_find_header( headers, "Content-Type" );
const char * in = (const char*) evbuffer_pullup( body, -1 );
size_t inlen = evbuffer_get_length( body );
const char * boundary_key = "boundary=";
const char * boundary_key_begin = strstr( content_type, boundary_key );
const char * boundary_val = boundary_key_begin ? boundary_key_begin + strlen( boundary_key ) : "arglebargle";
char * boundary = tr_strdup_printf( "--%s", boundary_val );
const size_t boundary_len = strlen( boundary );
const char * delim = tr_memmem( in, inlen, boundary, boundary_len );
while( delim )
{
size_t part_len;
const char * part = delim + boundary_len;
inlen -= ( part - in );
in = part;
delim = tr_memmem( in, inlen, boundary, boundary_len );
part_len = delim ? (size_t)( delim - part ) : inlen;
if( part_len )
{
const char * rnrn = tr_memmem( part, part_len, "\r\n\r\n", 4 );
if( rnrn )
{
struct tr_mimepart * p = tr_new( struct tr_mimepart, 1 );
p->headers_len = rnrn - part;
p->headers = tr_strndup( part, p->headers_len );
p->body_len = (part+part_len) - (rnrn + 4);
p->body = tr_strndup( rnrn+4, p->body_len );
tr_ptrArrayAppend( setme_parts, p );
}
}
}
tr_free( boundary );
}
static void
handle_upload( struct evhttp_request * req,
struct tr_rpc_server * server )
{
if( req->type != EVHTTP_REQ_POST )
{
send_simple_response( req, 405, NULL );
}
else
{
int i;
int n;
bool hasSessionId = false;
tr_ptrArray parts = TR_PTR_ARRAY_INIT;
const char * query = strchr( req->uri, '?' );
const bool paused = query && strstr( query + 1, "paused=true" );
extract_parts_from_multipart( req->input_headers, req->input_buffer, &parts );
n = tr_ptrArraySize( &parts );
/* first look for the session id */
for( i=0; i<n; ++i ) {
struct tr_mimepart * p = tr_ptrArrayNth( &parts, i );
if( tr_memmem( p->headers, p->headers_len, TR_RPC_SESSION_ID_HEADER, strlen( TR_RPC_SESSION_ID_HEADER ) ) )
break;
}
if( i<n ) {
const struct tr_mimepart * p = tr_ptrArrayNth( &parts, i );
const char * ours = get_current_session_id( server );
const int ourlen = strlen( ours );
hasSessionId = ourlen<=p->body_len && !memcmp( p->body, ours, ourlen );
}
if( !hasSessionId )
{
int code = 409;
const char * codetext = tr_webGetResponseStr( code );
struct evbuffer * body = evbuffer_new( );
evbuffer_add_printf( body, "%s", "{ \"success\": false, \"msg\": \"Bad Session-Id\" }" );;
evhttp_send_reply( req, code, codetext, body );
evbuffer_free( body );
}
else for( i=0; i<n; ++i )
{
struct tr_mimepart * p = tr_ptrArrayNth( &parts, i );
int body_len = p->body_len;
tr_benc top, *args;
tr_benc test;
bool have_source = false;
char * body = p->body;
if( body_len >= 2 && !memcmp( &body[body_len - 2], "\r\n", 2 ) )
body_len -= 2;
tr_bencInitDict( &top, 2 );
tr_bencDictAddStr( &top, "method", "torrent-add" );
args = tr_bencDictAddDict( &top, "arguments", 2 );
tr_bencDictAddBool( args, "paused", paused );
if( tr_urlIsValid( body, body_len ) )
{
tr_bencDictAddRaw( args, "filename", body, body_len );
have_source = true;
}
else if( !tr_bencLoad( body, body_len, &test, NULL ) )
{
char * b64 = tr_base64_encode( body, body_len, NULL );
tr_bencDictAddStr( args, "metainfo", b64 );
tr_free( b64 );
have_source = true;
}
if( have_source )
{
struct evbuffer * json = evbuffer_new( );
tr_bencToBuf( &top, TR_FMT_JSON, json );
tr_rpc_request_exec_json( server->session,
evbuffer_pullup( json, -1 ),
evbuffer_get_length( json ),
NULL, NULL );
evbuffer_free( json );
}
tr_bencFree( &top );
}
tr_ptrArrayDestruct( &parts, (PtrArrayForeachFunc)tr_mimepart_free );
/* send "success" response */
{
int code = HTTP_OK;
const char * codetext = tr_webGetResponseStr( code );
struct evbuffer * body = evbuffer_new( );
evbuffer_add_printf( body, "%s", "{ \"success\": true, \"msg\": \"Torrent Added\" }" );;
evhttp_send_reply( req, code, codetext, body );
evbuffer_free( body );
}
}
}
static const char*
mimetype_guess( const char * path )
{
unsigned int i;
const struct
{
const char * suffix;
const char * mime_type;
} types[] = {
/* these are the ones we need for serving the web client's files... */
{ "css", "text/css" },
{ "gif", "image/gif" },
{ "html", "text/html" },
{ "ico", "image/vnd.microsoft.icon" },
{ "js", "application/javascript" },
{ "png", "image/png" }
};
const char * dot = strrchr( path, '.' );
for( i = 0; dot && i < TR_N_ELEMENTS( types ); ++i )
if( !strcmp( dot + 1, types[i].suffix ) )
return types[i].mime_type;
return "application/octet-stream";
}
static void
add_response( struct evhttp_request * req, struct tr_rpc_server * server,
struct evbuffer * out, struct evbuffer * content )
{
#ifndef HAVE_ZLIB
evbuffer_add_buffer( out, content );
#else
const char * key = "Accept-Encoding";
const char * encoding = evhttp_find_header( req->input_headers, key );
const int do_compress = encoding && strstr( encoding, "gzip" );
if( !do_compress )
{
evbuffer_add_buffer( out, content );
}
else
{
int state;
struct evbuffer_iovec iovec[1];
void * content_ptr = evbuffer_pullup( content, -1 );
const size_t content_len = evbuffer_get_length( content );
if( !server->isStreamInitialized )
{
int compressionLevel;
server->isStreamInitialized = true;
server->stream.zalloc = (alloc_func) Z_NULL;
server->stream.zfree = (free_func) Z_NULL;
server->stream.opaque = (voidpf) Z_NULL;
/* zlib's manual says: "Add 16 to windowBits to write a simple gzip header
* and trailer around the compressed data instead of a zlib wrapper." */
#ifdef TR_LIGHTWEIGHT
compressionLevel = Z_DEFAULT_COMPRESSION;
#else
compressionLevel = Z_BEST_COMPRESSION;
#endif
deflateInit2( &server->stream, compressionLevel, Z_DEFLATED, 15+16, 8, Z_DEFAULT_STRATEGY );
}
server->stream.next_in = content_ptr;
server->stream.avail_in = content_len;
/* allocate space for the raw data and call deflate() just once --
* we won't use the deflated data if it's longer than the raw data,
* so it's okay to let deflate() run out of output buffer space */
evbuffer_reserve_space( out, content_len, iovec, 1 );
server->stream.next_out = iovec[0].iov_base;
server->stream.avail_out = iovec[0].iov_len;
state = deflate( &server->stream, Z_FINISH );
if( state == Z_STREAM_END )
{
iovec[0].iov_len -= server->stream.avail_out;
#if 0
fprintf( stderr, "compressed response is %.2f of original (raw==%zu bytes; compressed==%zu)\n",
(double)evbuffer_get_length(out)/content_len,
content_len, evbuffer_get_length(out) );
#endif
evhttp_add_header( req->output_headers,
"Content-Encoding", "gzip" );
}
else
{
memcpy( iovec[0].iov_base, content_ptr, content_len );
iovec[0].iov_len = content_len;
}
evbuffer_commit_space( out, iovec, 1 );
deflateReset( &server->stream );
}
#endif
}
static void
add_time_header( struct evkeyvalq * headers, const char * key, time_t value )
{
/* According to RFC 2616 this must follow RFC 1123's date format,
so use gmtime instead of localtime... */
char buf[128];
struct tm tm = *gmtime( &value );
strftime( buf, sizeof( buf ), "%a, %d %b %Y %H:%M:%S GMT", &tm );
evhttp_add_header( headers, key, buf );
}
static void
evbuffer_ref_cleanup_tr_free( const void * data UNUSED, size_t datalen UNUSED, void * extra )
{
tr_free( extra );
}
static void
serve_file( struct evhttp_request * req,
struct tr_rpc_server * server,
const char * filename )
{
if( req->type != EVHTTP_REQ_GET )
{
evhttp_add_header( req->output_headers, "Allow", "GET" );
send_simple_response( req, 405, NULL );
}
else
{
void * file;
size_t file_len;
struct evbuffer * content;
const int error = errno;
errno = 0;
file_len = 0;
file = tr_loadFile( filename, &file_len );
content = evbuffer_new( );
evbuffer_add_reference( content, file, file_len, evbuffer_ref_cleanup_tr_free, file );
if( errno )
{
char * tmp = tr_strdup_printf( "%s (%s)", filename, tr_strerror( errno ) );
send_simple_response( req, HTTP_NOTFOUND, tmp );
tr_free( tmp );
}
else
{
struct evbuffer * out;
const time_t now = tr_time( );
errno = error;
out = evbuffer_new( );
evhttp_add_header( req->output_headers, "Content-Type", mimetype_guess( filename ) );
add_time_header( req->output_headers, "Date", now );
add_time_header( req->output_headers, "Expires", now+(24*60*60) );
add_response( req, server, out, content );
evhttp_send_reply( req, HTTP_OK, "OK", out );
evbuffer_free( out );
}
evbuffer_free( content );
}
}
static void
handle_web_client( struct evhttp_request * req,
struct tr_rpc_server * server )
{
const char * webClientDir = tr_getWebClientDir( server->session );
if( !webClientDir || !*webClientDir )
{
send_simple_response( req, HTTP_NOTFOUND,
"<p>Couldn't find Transmission's web interface files!</p>"
"<p>Users: to tell Transmission where to look, "
"set the TRANSMISSION_WEB_HOME environment "
"variable to the folder where the web interface's "
"index.html is located.</p>"
"<p>Package Builders: to set a custom default at compile time, "
"#define PACKAGE_DATA_DIR in libtransmission/platform.c "
"or tweak tr_getClutchDir() by hand.</p>" );
}
else
{
char * pch;
char * subpath;
subpath = tr_strdup( req->uri + strlen( server->url ) + 4 );
if(( pch = strchr( subpath, '?' )))
*pch = '\0';
if( strstr( subpath, ".." ) )
{
send_simple_response( req, HTTP_NOTFOUND, "<p>Tsk, tsk.</p>" );
}
else
{
char * filename = tr_strdup_printf( "%s%s%s",
webClientDir,
TR_PATH_DELIMITER_STR,
subpath && *subpath ? subpath : "index.html" );
serve_file( req, server, filename );
tr_free( filename );
}
tr_free( subpath );
}
}
struct rpc_response_data
{
struct evhttp_request * req;
struct tr_rpc_server * server;
};
static void
rpc_response_func( tr_session * session UNUSED,
struct evbuffer * response,
void * user_data )
{
struct rpc_response_data * data = user_data;
struct evbuffer * buf = evbuffer_new( );
add_response( data->req, data->server, buf, response );
evhttp_add_header( data->req->output_headers,
"Content-Type", "application/json; charset=UTF-8" );
evhttp_send_reply( data->req, HTTP_OK, "OK", buf );
evbuffer_free( buf );
tr_free( data );
}
static void
handle_rpc( struct evhttp_request * req,
struct tr_rpc_server * server )
{
struct rpc_response_data * data = tr_new0( struct rpc_response_data, 1 );
data->req = req;
data->server = server;
if( req->type == EVHTTP_REQ_GET )
{
const char * q;
if( ( q = strchr( req->uri, '?' ) ) )
tr_rpc_request_exec_uri( server->session, q+1, -1, rpc_response_func, data );
}
else if( req->type == EVHTTP_REQ_POST )
{
tr_rpc_request_exec_json( server->session,
evbuffer_pullup( req->input_buffer, -1 ),
evbuffer_get_length( req->input_buffer ),
rpc_response_func, data );
}
}
static bool
isAddressAllowed( const tr_rpc_server * server,
const char * address )
{
tr_list * l;
if( !server->isWhitelistEnabled )
return true;
for( l=server->whitelist; l!=NULL; l=l->next )
if( tr_wildmat( address, l->data ) )
return true;
return false;
}
static bool
test_session_id( struct tr_rpc_server * server, struct evhttp_request * req )
{
const char * ours = get_current_session_id( server );
const char * theirs = evhttp_find_header( req->input_headers, TR_RPC_SESSION_ID_HEADER );
const bool success = theirs && !strcmp( theirs, ours );
return success;
}
static void
handle_request( struct evhttp_request * req, void * arg )
{
struct tr_rpc_server * server = arg;
if( req && req->evcon )
{
const char * auth;
char * user = NULL;
char * pass = NULL;
evhttp_add_header( req->output_headers, "Server", MY_REALM );
auth = evhttp_find_header( req->input_headers, "Authorization" );
if( auth && !evutil_ascii_strncasecmp( auth, "basic ", 6 ) )
{
int plen;
char * p = tr_base64_decode( auth + 6, 0, &plen );
if( p && plen && ( ( pass = strchr( p, ':' ) ) ) )
{
user = p;
*pass++ = '\0';
}
}
if( !isAddressAllowed( server, req->remote_host ) )
{
send_simple_response( req, 403,
"<p>Unauthorized IP Address.</p>"
"<p>Either disable the IP address whitelist or add your address to it.</p>"
"<p>If you're editing settings.json, see the 'rpc-whitelist' and 'rpc-whitelist-enabled' entries.</p>"
"<p>If you're still using ACLs, use a whitelist instead. See the transmission-daemon manpage for details.</p>" );
}
else if( server->isPasswordEnabled
&& ( !pass || !user || strcmp( server->username, user )
|| !tr_ssha1_matches( server->password,
pass ) ) )
{
evhttp_add_header( req->output_headers,
"WWW-Authenticate",
"Basic realm=\"" MY_REALM "\"" );
send_simple_response( req, 401, "Unauthorized User" );
}
else if( strncmp( req->uri, server->url, strlen( server->url ) ) )
{
const char * protocol = "http";
const char * host = evhttp_find_header( req->input_headers, "Host" );
char * location = tr_strdup_printf( "%s://%s%sweb/", protocol, host, server->url );
evhttp_add_header( req->output_headers, "Location", location );
send_simple_response( req, HTTP_MOVEPERM, NULL );
tr_free( location );
}
else if( !strncmp( req->uri + strlen( server->url ), "web/", 4 ) )
{
handle_web_client( req, server );
}
else if( !strncmp( req->uri + strlen( server->url ), "upload", 6 ) )
{
handle_upload( req, server );
}
#ifdef REQUIRE_SESSION_ID
else if( !test_session_id( server, req ) )
{
const char * sessionId = get_current_session_id( server );
char * tmp = tr_strdup_printf(
"<p>Your request had an invalid session-id header.</p>"
"<p>To fix this, follow these steps:"
"<ol><li> When reading a response, get its X-Transmission-Session-Id header and remember it"
"<li> Add the updated header to your outgoing requests"
"<li> When you get this 409 error message, resend your request with the updated header"
"</ol></p>"
"<p>This requirement has been added to help prevent "
"<a href=\"http://en.wikipedia.org/wiki/Cross-site_request_forgery\">CSRF</a> "
"attacks.</p>"
"<p><code>%s: %s</code></p>",
TR_RPC_SESSION_ID_HEADER, sessionId );
evhttp_add_header( req->output_headers, TR_RPC_SESSION_ID_HEADER, sessionId );
send_simple_response( req, 409, tmp );
tr_free( tmp );
}
#endif
else if( !strncmp( req->uri + strlen( server->url ), "rpc", 3 ) )
{
handle_rpc( req, server );
}
else
{
send_simple_response( req, HTTP_NOTFOUND, req->uri );
}
tr_free( user );
}
}
static void
startServer( void * vserver )
{
tr_rpc_server * server = vserver;
tr_address addr;
if( !server->httpd )
{
addr.type = TR_AF_INET;
addr.addr.addr4 = server->bindAddress;
server->httpd = evhttp_new( server->session->event_base );
evhttp_bind_socket( server->httpd, tr_address_to_string( &addr ), server->port );
evhttp_set_gencb( server->httpd, handle_request, server );
}
}
static void
stopServer( tr_rpc_server * server )
{
if( server->httpd )
{
evhttp_free( server->httpd );
server->httpd = NULL;
}
}
static void
onEnabledChanged( void * vserver )
{
tr_rpc_server * server = vserver;
if( !server->isEnabled )
stopServer( server );
else
startServer( server );
}
void
tr_rpcSetEnabled( tr_rpc_server * server,
bool isEnabled )
{
server->isEnabled = isEnabled;
tr_runInEventThread( server->session, onEnabledChanged, server );
}
bool
tr_rpcIsEnabled( const tr_rpc_server * server )
{
return server->isEnabled;
}
static void
restartServer( void * vserver )
{
tr_rpc_server * server = vserver;
if( server->isEnabled )
{
stopServer( server );
startServer( server );
}
}
void
tr_rpcSetPort( tr_rpc_server * server,
tr_port port )
{
assert( server != NULL );
if( server->port != port )
{
server->port = port;
if( server->isEnabled )
tr_runInEventThread( server->session, restartServer, server );
}
}
tr_port
tr_rpcGetPort( const tr_rpc_server * server )
{
return server->port;
}
void
tr_rpcSetUrl( tr_rpc_server * server, const char * url )
{
char * tmp = server->url;
server->url = tr_strdup( url );
dbgmsg( "setting our URL to [%s]", server->url );
tr_free( tmp );
}
const char*
tr_rpcGetUrl( const tr_rpc_server * server )
{
return server->url ? server->url : "";
}
void
tr_rpcSetWhitelist( tr_rpc_server * server, const char * whitelistStr )
{
void * tmp;
const char * walk;
/* keep the string */
tmp = server->whitelistStr;
server->whitelistStr = tr_strdup( whitelistStr );
tr_free( tmp );
/* clear out the old whitelist entries */
while(( tmp = tr_list_pop_front( &server->whitelist )))
tr_free( tmp );
/* build the new whitelist entries */
for( walk=whitelistStr; walk && *walk; ) {
const char * delimiters = " ,;";
const size_t len = strcspn( walk, delimiters );
char * token = tr_strndup( walk, len );
tr_list_append( &server->whitelist, token );
if( strcspn( token, "+-" ) < len )
tr_ninf( MY_NAME, "Adding address to whitelist: %s (And it has a '+' or '-'! Are you using an old ACL by mistake?)", token );
else
tr_ninf( MY_NAME, "Adding address to whitelist: %s", token );
if( walk[len]=='\0' )
break;
walk += len + 1;
}
}
const char*
tr_rpcGetWhitelist( const tr_rpc_server * server )
{
return server->whitelistStr ? server->whitelistStr : "";
}
void
tr_rpcSetWhitelistEnabled( tr_rpc_server * server,
bool isEnabled )
{
server->isWhitelistEnabled = isEnabled != 0;
}
bool
tr_rpcGetWhitelistEnabled( const tr_rpc_server * server )
{
return server->isWhitelistEnabled;
}
/****
***** PASSWORD
****/
void
tr_rpcSetUsername( tr_rpc_server * server, const char * username )
{
char * tmp = server->username;
server->username = tr_strdup( username );
dbgmsg( "setting our Username to [%s]", server->username );
tr_free( tmp );
}
const char*
tr_rpcGetUsername( const tr_rpc_server * server )
{
return server->username ? server->username : "";
}
void
tr_rpcSetPassword( tr_rpc_server * server,
const char * password )
{
tr_free( server->password );
if( *password != '{' )
server->password = tr_ssha1( password );
else
server->password = strdup( password );
dbgmsg( "setting our Password to [%s]", server->password );
}
const char*
tr_rpcGetPassword( const tr_rpc_server * server )
{
return server->password ? server->password : "" ;
}
void
tr_rpcSetPasswordEnabled( tr_rpc_server * server, bool isEnabled )
{
server->isPasswordEnabled = isEnabled;
dbgmsg( "setting 'password enabled' to %d", (int)isEnabled );
}
bool
tr_rpcIsPasswordEnabled( const tr_rpc_server * server )
{
return server->isPasswordEnabled;
}
const char *
tr_rpcGetBindAddress( const tr_rpc_server * server )
{
tr_address addr;
addr.type = TR_AF_INET;
addr.addr.addr4 = server->bindAddress;
return tr_address_to_string( &addr );
}
/****
***** LIFE CYCLE
****/
static void
closeServer( void * vserver )
{
void * tmp;
tr_rpc_server * s = vserver;
stopServer( s );
while(( tmp = tr_list_pop_front( &s->whitelist )))
tr_free( tmp );
#ifdef HAVE_ZLIB
if( s->isStreamInitialized )
deflateEnd( &s->stream );
#endif
tr_free( s->url );
tr_free( s->sessionId );
tr_free( s->whitelistStr );
tr_free( s->username );
tr_free( s->password );
tr_free( s );
}
void
tr_rpcClose( tr_rpc_server ** ps )
{
tr_runInEventThread( ( *ps )->session, closeServer, *ps );
*ps = NULL;
}
tr_rpc_server *
tr_rpcInit( tr_session * session, tr_benc * settings )
{
tr_rpc_server * s;
bool found;
bool boolVal;
int64_t i;
const char *str;
tr_address address;
s = tr_new0( tr_rpc_server, 1 );
s->session = session;
found = tr_bencDictFindBool( settings, TR_PREFS_KEY_RPC_ENABLED, &boolVal );
assert( found );
s->isEnabled = boolVal;
found = tr_bencDictFindInt( settings, TR_PREFS_KEY_RPC_PORT, &i );
assert( found );
s->port = i;
found = tr_bencDictFindStr( settings, TR_PREFS_KEY_RPC_URL, &str );
assert( found );
s->url = tr_strdup( str );
found = tr_bencDictFindBool( settings, TR_PREFS_KEY_RPC_WHITELIST_ENABLED, &boolVal );
assert( found );
tr_rpcSetWhitelistEnabled( s, boolVal );
found = tr_bencDictFindBool( settings, TR_PREFS_KEY_RPC_AUTH_REQUIRED, &boolVal );
assert( found );
tr_rpcSetPasswordEnabled( s, boolVal );
found = tr_bencDictFindStr( settings, TR_PREFS_KEY_RPC_WHITELIST, &str );
assert( found );
tr_rpcSetWhitelist( s, str ? str : "127.0.0.1" );
found = tr_bencDictFindStr( settings, TR_PREFS_KEY_RPC_USERNAME, &str );
assert( found );
tr_rpcSetUsername( s, str );
found = tr_bencDictFindStr( settings, TR_PREFS_KEY_RPC_PASSWORD, &str );
assert( found );
tr_rpcSetPassword( s, str );
found = tr_bencDictFindStr( settings, TR_PREFS_KEY_RPC_BIND_ADDRESS, &str );
assert( found );
if( !tr_address_from_string( &address, str ) ) {
tr_err( _( "%s is not a valid address" ), str );
address = tr_inaddr_any;
} else if( address.type != TR_AF_INET ) {
tr_err( _( "%s is not an IPv4 address. RPC listeners must be IPv4" ),
str );
address = tr_inaddr_any;
}
s->bindAddress = address.addr.addr4;
if( s->isEnabled )
{
tr_ninf( MY_NAME, _( "Serving RPC and Web requests on port 127.0.0.1:%d%s" ), (int) s->port, s->url );
tr_runInEventThread( session, startServer, s );
if( s->isWhitelistEnabled )
tr_ninf( MY_NAME, "%s", _( "Whitelist enabled" ) );
if( s->isPasswordEnabled )
tr_ninf( MY_NAME, "%s", _( "Password required" ) );
}
return s;
}
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