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Fixed possible crash in ftServer::handleIncoming by checking return value of dynamic_cast.

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git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@8594 b45a01b8-16f6-495d-af2f-9b41ad6348cc
This commit is contained in:
thunder2 2015-07-12 01:08:33 +00:00
parent 014e78dd8c
commit 3abec3363d
1 changed files with 51 additions and 27 deletions
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24
libretroshare/src/ft/ftserver.cc
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@ -1312,16 +1312,21 @@ int ftServer::handleIncoming()
case RS_PKT_SUBTYPE_FT_DATA_REQUEST: case RS_PKT_SUBTYPE_FT_DATA_REQUEST:
{ {
RsFileTransferDataRequestItem *f = dynamic_cast<RsFileTransferDataRequestItem*>(item) ; RsFileTransferDataRequestItem *f = dynamic_cast<RsFileTransferDataRequestItem*>(item) ;
if (f)
{
#ifdef SERVER_DEBUG #ifdef SERVER_DEBUG
std::cerr << "ftServer::handleIncoming: received data request for hash " << f->file.hash << ", offset=" << f->fileoffset << ", chunk size=" << f->chunksize << std::endl; std::cerr << "ftServer::handleIncoming: received data request for hash " << f->file.hash << ", offset=" << f->fileoffset << ", chunk size=" << f->chunksize << std::endl;
#endif #endif
mFtDataplex->recvDataRequest(f->PeerId(), f->file.hash, f->file.filesize, f->fileoffset, f->chunksize); mFtDataplex->recvDataRequest(f->PeerId(), f->file.hash, f->file.filesize, f->fileoffset, f->chunksize);
} }
}
break ; break ;
case RS_PKT_SUBTYPE_FT_DATA: case RS_PKT_SUBTYPE_FT_DATA:
{ {
RsFileTransferDataItem *f = dynamic_cast<RsFileTransferDataItem*>(item) ; RsFileTransferDataItem *f = dynamic_cast<RsFileTransferDataItem*>(item) ;
if (f)
{
#ifdef SERVER_DEBUG #ifdef SERVER_DEBUG
std::cerr << "ftServer::handleIncoming: received data for hash " << f->fd.file.hash << ", offset=" << f->fd.file_offset << ", chunk size=" << f->fd.binData.bin_len << std::endl; std::cerr << "ftServer::handleIncoming: received data for hash " << f->fd.file.hash << ", offset=" << f->fd.file_offset << ", chunk size=" << f->fd.binData.bin_len << std::endl;
#endif #endif
@ -1331,51 +1336,66 @@ int ftServer::handleIncoming()
*/ */
f->fd.binData.TlvShallowClear(); f->fd.binData.TlvShallowClear();
} }
}
break ; break ;
case RS_PKT_SUBTYPE_FT_CHUNK_MAP_REQUEST: case RS_PKT_SUBTYPE_FT_CHUNK_MAP_REQUEST:
{ {
RsFileTransferChunkMapRequestItem *f = dynamic_cast<RsFileTransferChunkMapRequestItem*>(item) ; RsFileTransferChunkMapRequestItem *f = dynamic_cast<RsFileTransferChunkMapRequestItem*>(item) ;
if (f)
{
#ifdef SERVER_DEBUG #ifdef SERVER_DEBUG
std::cerr << "ftServer::handleIncoming: received chunkmap request for hash " << f->hash << ", client=" << f->is_client << std::endl; std::cerr << "ftServer::handleIncoming: received chunkmap request for hash " << f->hash << ", client=" << f->is_client << std::endl;
#endif #endif
mFtDataplex->recvChunkMapRequest(f->PeerId(), f->hash,f->is_client) ; mFtDataplex->recvChunkMapRequest(f->PeerId(), f->hash,f->is_client) ;
} }
}
break ; break ;
case RS_PKT_SUBTYPE_FT_CHUNK_MAP: case RS_PKT_SUBTYPE_FT_CHUNK_MAP:
{ {
RsFileTransferChunkMapItem *f = dynamic_cast<RsFileTransferChunkMapItem*>(item) ; RsFileTransferChunkMapItem *f = dynamic_cast<RsFileTransferChunkMapItem*>(item) ;
if (f)
{
#ifdef SERVER_DEBUG #ifdef SERVER_DEBUG
std::cerr << "ftServer::handleIncoming: received chunkmap for hash " << f->hash << ", client=" << f->is_client << /*", map=" << f->compressed_map <<*/ std::endl; std::cerr << "ftServer::handleIncoming: received chunkmap for hash " << f->hash << ", client=" << f->is_client << /*", map=" << f->compressed_map <<*/ std::endl;
#endif #endif
mFtDataplex->recvChunkMap(f->PeerId(), f->hash,f->compressed_map,f->is_client) ; mFtDataplex->recvChunkMap(f->PeerId(), f->hash,f->compressed_map,f->is_client) ;
} }
}
break ; break ;
case RS_PKT_SUBTYPE_FT_CHUNK_CRC_REQUEST: case RS_PKT_SUBTYPE_FT_CHUNK_CRC_REQUEST:
{ {
RsFileTransferSingleChunkCrcRequestItem *f = dynamic_cast<RsFileTransferSingleChunkCrcRequestItem*>(item) ; RsFileTransferSingleChunkCrcRequestItem *f = dynamic_cast<RsFileTransferSingleChunkCrcRequestItem*>(item) ;
if (f)
{
#ifdef SERVER_DEBUG #ifdef SERVER_DEBUG
std::cerr << "ftServer::handleIncoming: received single chunk crc req for hash " << f->hash << ", chunk number=" << f->chunk_number << std::endl; std::cerr << "ftServer::handleIncoming: received single chunk crc req for hash " << f->hash << ", chunk number=" << f->chunk_number << std::endl;
#endif #endif
mFtDataplex->recvSingleChunkCRCRequest(f->PeerId(), f->hash,f->chunk_number) ; mFtDataplex->recvSingleChunkCRCRequest(f->PeerId(), f->hash,f->chunk_number) ;
} }
}
break ; break ;
case RS_PKT_SUBTYPE_FT_CHUNK_CRC: case RS_PKT_SUBTYPE_FT_CHUNK_CRC:
{ {
RsFileTransferSingleChunkCrcItem *f = dynamic_cast<RsFileTransferSingleChunkCrcItem *>(item) ; RsFileTransferSingleChunkCrcItem *f = dynamic_cast<RsFileTransferSingleChunkCrcItem *>(item) ;
if (f)
{
#ifdef SERVER_DEBUG #ifdef SERVER_DEBUG
std::cerr << "ftServer::handleIncoming: received single chunk crc req for hash " << f->hash << ", chunk number=" << f->chunk_number << ", checksum = " << f->check_sum << std::endl; std::cerr << "ftServer::handleIncoming: received single chunk crc req for hash " << f->hash << ", chunk number=" << f->chunk_number << ", checksum = " << f->check_sum << std::endl;
#endif #endif
mFtDataplex->recvSingleChunkCRC(f->PeerId(), f->hash,f->chunk_number,f->check_sum); mFtDataplex->recvSingleChunkCRC(f->PeerId(), f->hash,f->chunk_number,f->check_sum);
} }
}
break ; break ;
case RS_PKT_SUBTYPE_FT_CACHE_ITEM: case RS_PKT_SUBTYPE_FT_CACHE_ITEM:
{ {
RsFileTransferCacheItem *ci = dynamic_cast<RsFileTransferCacheItem*>(item) ; RsFileTransferCacheItem *ci = dynamic_cast<RsFileTransferCacheItem*>(item) ;
if (ci)
{
#ifdef SERVER_DEBUG_CACHE #ifdef SERVER_DEBUG_CACHE
std::cerr << "ftServer::handleIncoming: received cache item hash=" << ci->file.hash << ". from peer " << ci->PeerId() << std::endl; std::cerr << "ftServer::handleIncoming: received cache item hash=" << ci->file.hash << ". from peer " << ci->PeerId() << std::endl;
#endif #endif
@ -1391,16 +1411,20 @@ int ftServer::handleIncoming()
mCacheStrapper->recvCacheResponse(data, time(NULL)); mCacheStrapper->recvCacheResponse(data, time(NULL));
} }
}
break ; break ;
// case RS_PKT_SUBTYPE_FT_CACHE_REQUEST: // case RS_PKT_SUBTYPE_FT_CACHE_REQUEST:
// { // {
// // do nothing // // do nothing
// RsFileTransferCacheRequestItem *cr = dynamic_cast<RsFileTransferCacheRequestItem*>(item) ; // RsFileTransferCacheRequestItem *cr = dynamic_cast<RsFileTransferCacheRequestItem*>(item) ;
// if (cr)
// {
//#ifdef SERVER_DEBUG_CACHE //#ifdef SERVER_DEBUG_CACHE
// std::cerr << "ftServer::handleIncoming: received cache request from peer " << cr->PeerId() << std::endl; // std::cerr << "ftServer::handleIncoming: received cache request from peer " << cr->PeerId() << std::endl;
//#endif //#endif
// } // }
// }
// break ; // break ;
} }