void CFileConn::_HandleClientFilePullFileReq(CImPdu *pPdu)
{
if (!_IsAuth()) {
return;
}
IM::File::IMFilePullDataReq msg;
CHECK_PB_PARSE_MSG(msg.ParseFromArray(pPdu->GetBodyData(), pPdu->GetBodyLength()));
uint32_t user_id = msg.user_id();
string task_id = msg.task_id();
uint32_t mode = msg.trans_mode();
uint32_t offset = msg.offset();
uint32_t datasize = msg.data_size();
IM::File::IMFilePullDataRsp msg2;
msg2.set_result_code(1);
msg2.set_task_id(task_id);
msg2.set_user_id(user_id);
msg2.set_offset(offset);
msg2.set_data("");
CImPdu pdu;
pdu.SetPBMsg(&msg2);
pdu.SetServiceId(SID_FILE);
pdu.SetCommandId(CID_FILE_PULL_DATA_RSP);
pdu.SetSeqNum(pPdu->GetSeqNum());
// since the task had been created when the recver logged-in
// we can find task in g_file_task_map here
pthread_rwlock_wrlock(&g_file_task_map_lock);
TaskMap_t::iterator iter = g_file_task_map.find(task_id.c_str());
if (g_file_task_map.end() == iter) {
// invalid task id
pthread_rwlock_unlock(&g_file_task_map_lock);
log("invalid task id %s ", task_id.c_str());
SendPdu(&pdu);
return;
}
transfer_task_t* t = iter->second;
pthread_rwlock_unlock(&g_file_task_map_lock);
t->lock(__LINE__);
t->create_time = time(NULL);
if (t->from_user_id != user_id /*for the realtime recver*/ && t->to_user_id != user_id /*for the offline download*/) {
// invalid user
log("illieage user %d for task %s", user_id, task_id.c_str());
SendPdu(&pdu);
t->unlock(__LINE__);
return;
}
switch (mode) {
case IM::BaseDefine::FILE_TYPE_ONLINE: // transfer request to sender
{
CFileConn* pConn = (CFileConn*)t->GetOpponentConn(user_id);
pConn->SendPdu(pPdu);
break;
}
case IM::BaseDefine::FILE_TYPE_OFFLINE: // for the offline download
{
// find file use task id
// send header info to user
// send data
// save path manager not used
// save transfered info into task
// like FILE*
// transfered size
// haven't been opened
size_t size = 0;
if (NULL == t->fp) {
char save_path[BUFSIZ] = {0};
snprintf(save_path, BUFSIZ, "%s/%d", g_current_save_path, user_id); // those who can only get files under their user_id-dir
int ret = mkdir(save_path, 0755);
if ( (ret != 0) && (errno != EEXIST) ) {
log("mkdir failed for path: %s", save_path);
SendPdu(&pdu);
t->unlock(__LINE__);
return;
}
strncat(save_path, "/", BUFSIZ);
strncat(save_path, task_id.c_str(), BUFSIZ); // use task_id as file name, in case of same-name file
// open at first time
t->fp = fopen(save_path, "rb"); // save fp
if (!t->fp) {
log("can not open file");
SendPdu(&pdu);
t->unlock(__LINE__);
return;
}
// read head at open
if (NULL == t->file_head) {
t->file_head = new file_header_t;
if (NULL == t->file_head) {
// close to ensure next time will new file-header again
log("read file head failed.");
fclose(t->fp);
SendPdu(&pdu);
t->unlock(__LINE__);
return;
}
}
size = fread(t->file_head, 1, sizeof(file_header_t), t->fp); // read header
if (sizeof(file_header_t) > size) {
// close to ensure next time will read again
log("read file head failed.");
fclose(t->fp); // error to get header
SendPdu(&pdu);
t->unlock(__LINE__);
return;
} // the header won't be sent to recver, because the msg svr had already notified it.
// if the recver needs to check it, it could be helpful
// or sometime later, the recver needs it in some way.
}
// read data and send based on offset and datasize.
char* tmpbuf = new char[datasize];
if (NULL == tmpbuf) {
// alloc mem failed
log("alloc mem failed.");
SendPdu(&pdu);
t->unlock(__LINE__);
return;
}
memset(tmpbuf, 0, datasize);
// offset file_header_t
int iret = fseek(t->fp, sizeof(file_header_t) + offset, SEEK_SET); // read after file_header_t
if (0 != iret) {
log("seek offset failed.");
SendPdu(&pdu);
delete[] tmpbuf;
t->unlock(__LINE__);
return;
// offset failed
}
size = fread(tmpbuf, 1, datasize, t->fp);
msg2.set_data(tmpbuf, size);
CImPdu pdu2;
pdu2.SetPBMsg(&msg2);
pdu2.SetServiceId(SID_FILE);
pdu2.SetCommandId(CID_FILE_PULL_DATA_RSP);
pdu2.SetSeqNum(pPdu->GetSeqNum());
pdu2.SetSeqNum(pPdu->GetSeqNum());
SendPdu(&pdu2);
delete[] tmpbuf;
t->transfered_size += size; // record transfered size for next time offset
if (0 == size) {
fclose(t->fp);
t->fp = NULL;
_StatesNotify(CLIENT_FILE_DONE, task_id.c_str(), user_id, this);
Close();
t->self_destroy = true;
t->unlock(__LINE__);
return;
}
break;
}
default:
break;
}
t->unlock(__LINE__);
return;
}
void FileTransferSocket::_filePullDataReqResponse(IN std::string& body)//发
{
IM::File::IMFilePullDataReq imFilePullDataReq;
if (!imFilePullDataReq.ParseFromString(body))
{
LOG__(ERR, _T("parse failed,body:%s"), util::stringToCString(body));
return;
}
UInt32 fileSize = imFilePullDataReq.data_size();
UInt32 fileOffset = imFilePullDataReq.offset();
std::string taskId = imFilePullDataReq.task_id();
TransferFileEntity fileEntity;
if (!TransferFileEntityManager::getInstance()->getFileInfoByTaskId(taskId, fileEntity))
{
LOG__(ERR, _T("PullDataReqResponse: can't find the fileInfo"));
return;
}
LOG__(DEBG, _T("send:taskId=%s,filesize=%d,name=%s,BolckSize=%d")
,util::stringToCString(fileEntity.sTaskID)
,fileEntity.nFileSize
,fileEntity.getRealFileName()
,fileSize);
std::string buff;
if (nullptr == fileEntity.pFileObject)
{
LOG__(ERR, _T("PullDataReqResponse: file boject Destoryed!"));
return;
}
fileEntity.pFileObject->readBlock(fileOffset, fileSize, buff);//读取本地文件的数据块
IM::File::IMFilePullDataRsp imFilePullDataRsp;//todo check
imFilePullDataRsp.set_result_code(0);
imFilePullDataRsp.set_task_id(taskId);
imFilePullDataRsp.set_user_id(util::stringToInt32(fileEntity.sFromID));
imFilePullDataRsp.set_offset(fileOffset);
imFilePullDataRsp.set_file_data((void*)buff.data(), fileSize);
//send packet
sendPacket(IM::BaseDefine::ServiceID::SID_FILE, IM::BaseDefine::FileCmdID::CID_FILE_PULL_DATA_RSP
, &imFilePullDataRsp);
fileEntity.nProgress = fileOffset + fileSize;
if (fileEntity.nProgress < fileEntity.nFileSize)
{
//更新进度条
TransferFileEntityManager::getInstance()->updateFileInfoBysTaskID(fileEntity);//保存当前进度
module::getFileTransferModule()->asynNotifyObserver(module::KEY_FILESEVER_UPDATA_PROGRESSBAR
, fileEntity.sTaskID);
}
else//传输完成
{
if (fileEntity.pFileObject)
{
delete fileEntity.pFileObject;
fileEntity.pFileObject = nullptr;
}
module::getFileTransferModule()->asynNotifyObserver(module::KEY_FILESEVER_PROGRESSBAR_FINISHED
, fileEntity.sTaskID);
}
TransferFileEntityManager::getInstance()->updateFileInfoBysTaskID(fileEntity);
}