/**************************************************************************** Copyright (c) 2015-2016 Chukong Technologies Inc. Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd. Copyright (c) 2021 Bytedance Inc. https://adxe.org Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ****************************************************************************/ #include "network/CCDownloader-curl.h" #include #include #include #include #include "base/ccUtils.h" #include "base/ccUTF8.h" #include "base/CCDirector.h" #include "base/CCScheduler.h" #include "platform/CCFileUtils.h" #include "network/CCDownloader.h" #include "platform/CCFileStream.h" #include "openssl/md5.h" #include "yasio/xxsocket.hpp" // **NOTE** // In the file: // member function with suffix "Proc" designed called in DownloaderCURL::_threadProc // member function without suffix designed called in main thread #define CC_CURL_POLL_TIMEOUT_MS 50 // wait until DNS query done enum { kCheckSumStateSucceed = 1, kCheckSumStateFailed = 1 << 1, }; namespace cocos2d { namespace network { //////////////////////////////////////////////////////////////////////////////// // Implementation DownloadTaskCURL class DownloadTaskCURL : public IDownloadTask { static int _sSerialId; // if more than one task write to one file, cause file broken // so use a set to check this situation static std::set _sStoragePathSet; public: int serialId; DownloaderCURL& owner; DownloadTaskCURL(DownloaderCURL& o) : serialId(_sSerialId++), owner(o), _requestHeaders(nullptr) { _initInternal(); DLLOG("Construct DownloadTaskCURL %p", this); } virtual ~DownloadTaskCURL() { if (_errCode != DownloadTask::ERROR_TASK_DUPLICATED) { // if task destroyed unnormally, we should release WritenFileName stored in set. // Normally, this action should done when task finished. if (_tempFileName.length() && _sStoragePathSet.end() != _sStoragePathSet.find(_tempFileName)) { DownloadTaskCURL::_sStoragePathSet.erase(_tempFileName); } } _fs.reset(); _fsMd5.reset(); if (_requestHeaders) curl_slist_free_all(_requestHeaders); DLLOG("Destruct DownloadTaskCURL %p", this); } bool init(const std::string& filename, const std::string& tempSuffix) { if (0 == filename.length()) { // data task _buf.reserve(CURL_MAX_WRITE_SIZE); return true; } // file task _fileName = filename; _tempFileName = filename; _tempFileName.append(tempSuffix); if (_sStoragePathSet.end() != _sStoragePathSet.find(_tempFileName)) { // there is another task uses this storage path _errCode = DownloadTask::ERROR_TASK_DUPLICATED; _errCodeInternal = 0; _errDescription = "More than one download file task write to same file:"; _errDescription.append(_tempFileName); return false; } _sStoragePathSet.insert(_tempFileName); // open temp file handle for write bool ret = false; do { std::string dir; size_t found = _tempFileName.find_last_of("/\\"); if (found == std::string::npos) { _errCode = DownloadTask::ERROR_INVALID_PARAMS; _errCodeInternal = 0; _errDescription = "Can't find dirname in storagePath."; break; } // ensure directory is exist dir = _tempFileName.substr(0, found + 1); if (!FileUtils::getInstance()->isDirectoryExistInternal(dir)) { if (!FileUtils::getInstance()->createDirectory(dir)) { _errCode = DownloadTask::ERROR_CREATE_DIR_FAILED; _errCodeInternal = 0; _errDescription = "Can't create dir:"; _errDescription.append(dir); break; } } // open file _fs = FileUtils::getInstance()->openFileStream(_tempFileName, FileStream::Mode::APPEND); if (!_fs) { _errCode = DownloadTask::ERROR_OPEN_FILE_FAILED; _errCodeInternal = 0; _errDescription = "Can't open file:"; _errDescription.append(_tempFileName); break; } // init md5 state _checksumFileName = filename + ".chksum"; _fsMd5 = FileUtils::getInstance()->openFileStream(_checksumFileName, FileStream::Mode::OVERLAPPED); _fsMd5->seek(0, SEEK_END); if (_fsMd5->tell() != sizeof(_md5State)) { MD5_Init(&_md5State); } else { _fsMd5->seek(0, SEEK_SET); _fsMd5->read(&_md5State, sizeof(_md5State)); } ret = true; } while (0); return ret; } void cancel() override { std::lock_guard lock(_mutex); if (!_cancelled) { _cancelled = true; if (this->_sockfd != -1) { ::shutdown(this->_sockfd, SD_BOTH); // may cause curl CURLE_SEND_ERROR(55) or CURLE_RECV_ERROR(56) this->_sockfd = -1; } } } curl_socket_t openSocket(curlsocktype propose, curl_sockaddr* addr) { std::lock_guard lock(_mutex); if (!_cancelled) { this->_sockfd = ::socket(addr->family, addr->socktype, addr->protocol); return this->_sockfd; } return -1; } /* retval: 0. don't check, 1. check succeed, 2. check failed */ int checkFileMd5(const std::string& requiredsum, std::string* outsum = nullptr) { int status = 0; if (!requiredsum.empty()) { std::string digest(16, '\0'); auto state = _md5State; // Excellent, make a copy, don't modify the origin state. MD5_Final((uint8_t*)&digest.front(), &state); auto checksum = utils::bin2hex(digest); status = requiredsum == checksum ? kCheckSumStateSucceed : kCheckSumStateFailed; if (outsum != nullptr) *outsum = std::move(checksum); } return status; } void initProc() { std::lock_guard lock(_mutex); _initInternal(); } void setErrorProc(int code, int codeInternal, const char* desc) { std::lock_guard lock(_mutex); _errCode = code; _errCodeInternal = codeInternal; _errDescription = desc; } size_t writeDataProc(unsigned char* buffer, size_t size, size_t count) { std::lock_guard lock(_mutex); size_t ret = 0; auto bytes_transferred = size * count; if (_fs) { ret = _fs->write(buffer, bytes_transferred); // fwrite(buffer, size, count, _fp); } else { ret = bytes_transferred; auto cap = _buf.capacity(); auto bufSize = _buf.size(); if (cap < bufSize + ret) { _buf.reserve(bufSize * 2); } _buf.insert(_buf.end(), buffer, buffer + ret); } if (ret > 0) { _bytesReceived += ret; _totalBytesReceived += ret; if (_fsMd5) { ::MD5_Update(&_md5State, buffer, bytes_transferred); _fsMd5->seek(0, SEEK_SET); _fsMd5->write(&_md5State, sizeof(_md5State)); } } curl_easy_getinfo(_curl, CURLINFO_SPEED_DOWNLOAD, &_speed); return ret; } private: friend class DownloaderCURL; // for lock object instance std::recursive_mutex _mutex; // header info bool _acceptRanges; bool _headerAchieved; int64_t _totalBytesExpected; double _speed; CURL* _curl; curl_socket_t _sockfd = -1; // store the sockfd to support cancel download manually bool _cancelled = false; std::string _header; // temp buffer for receive header string, only used in thread proc curl_slist* _requestHeaders; // progress int64_t _bytesReceived; int64_t _totalBytesReceived; // error int _errCode; int _errCodeInternal; std::string _errDescription; // for saving data std::string _fileName; std::string _tempFileName; std::string _checksumFileName; std::vector _buf; std::unique_ptr _fs{}; // calculate md5 in downloading time support std::unique_ptr _fsMd5{}; // store md5 state realtime MD5state_st _md5State; void _initInternal() { _acceptRanges = (false); _headerAchieved = (false); _bytesReceived = (0); _totalBytesReceived = (0); _totalBytesExpected = (0); _speed = 0; _curl = nullptr; _errCode = (DownloadTask::ERROR_NO_ERROR); _errCodeInternal = (CURLE_OK); _header.resize(0); _header.reserve(384); // pre alloc header string buffer } }; int DownloadTaskCURL::_sSerialId; std::set DownloadTaskCURL::_sStoragePathSet; //////////////////////////////////////////////////////////////////////////////// // Implementation DownloaderCURL::Impl // This class shared by DownloaderCURL and work thread. class DownloaderCURL::Impl : public std::enable_shared_from_this { public: DownloaderHints hints; Impl() // : _thread(nullptr) { DLLOG("Construct DownloaderCURL::Impl %p", this); } ~Impl() { DLLOG("Destruct DownloaderCURL::Impl %p", this); } void addTask(std::shared_ptr task, DownloadTaskCURL* coTask) { int status = coTask->checkFileMd5(task->checksum); if (status & kCheckSumStateSucceed || DownloadTask::ERROR_NO_ERROR != coTask->_errCode) { _owner->_onDownloadFinished(*task, status); } else { std::lock_guard lock(_requestMutex); _requestQueue.push_back(task); } } void run() { std::lock_guard lock(_threadMutex); if (_tasksFinished) { // all tasks finished, make sure thread not joinable if (_thread.joinable()) _thread.join(); _tasksFinished = false; } if (!_thread.joinable()) _thread = std::thread(&DownloaderCURL::Impl::_threadProc, this); } void stop() { // make sure all task exit properly if (!_requestQueue.empty()) { std::lock_guard lock(_requestMutex); _requestQueue.clear(); } if (!_processSet.empty()) { std::lock_guard lock(_processMutex); for (auto& task : _processSet) task->cancel(); _processSet.clear(); } if (_thread.joinable()) _thread.join(); } bool stopped() const { std::lock_guard lock(_threadMutex); return false == _thread.joinable() ? true : false; } // Gets non background task list void getProcessTasks(std::vector>& outList) { std::lock_guard lock(_processMutex); outList.reserve(_processSet.size()); for (auto& task : _processSet) { if (!task->background) outList.push_back(task); } } void getFinishedTasks(std::vector>& outList) { std::lock_guard lock(_finishedMutex); outList.reserve(_finishedQueue.size()); outList.insert(outList.end(), _finishedQueue.begin(), _finishedQueue.end()); _finishedQueue.clear(); } private: static size_t _outputHeaderCallbackProc(void* buffer, size_t size, size_t count, void* userdata) { int strLen = int(size * count); DLLOG(" _outputHeaderCallbackProc: %.*s", strLen, buffer); DownloadTaskCURL& coTask = *((DownloadTaskCURL*)(userdata)); coTask._header.append((const char*)buffer, strLen); return strLen; } static size_t _outputDataCallbackProc(void* buffer, size_t size, size_t count, void* userdata) { // DLLOG(" _outputDataCallbackProc: size(%ld), count(%ld)", size, count); DownloadTaskCURL* coTask = (DownloadTaskCURL*)userdata; // If your callback function returns CURL_WRITEFUNC_PAUSE it will cause this transfer to become paused. return coTask->writeDataProc((unsigned char*)buffer, size, count); } static int _progressCallbackProc(void* ptr, double totalToDownload, double nowDownloaded, double totalToUpLoad, double nowUpLoaded) { auto task = (DownloadTask*)ptr; if (!task || !task->background) return 0; auto& coTask = task->_coTask; if (coTask) { auto& downloaderImpl = static_cast(coTask.get())->owner; downloaderImpl._updateTaskProgressInfo(*task); downloaderImpl.onTaskProgress(*task, downloaderImpl._transferDataToBuffer); } return 0; } static curl_socket_t _openSocketCallback(DownloadTaskCURL& pTask, curlsocktype propose, curl_sockaddr* addr) { return pTask.openSocket(propose, addr); } // this function designed call in work thread // the curl handle destroyed in _threadProc // handle inited for get header CURLcode _initCurlHandleProc(CURL* handle, std::shared_ptr& task, bool forContent = false) { DownloadTaskCURL* coTask = static_cast(task->_coTask.get()); /* Resolve host domain to ip */ std::string internalURL = task->requestURL; // Curl_custom_setup(handle, internalURL, (void**)& coTask->_requestHeaders); // set url curl_easy_setopt(handle, CURLOPT_URL, internalURL.c_str()); // set write func if (forContent) { curl_easy_setopt(handle, CURLOPT_WRITEFUNCTION, _outputDataCallbackProc); } else { curl_easy_setopt(handle, CURLOPT_WRITEFUNCTION, _outputHeaderCallbackProc); } curl_easy_setopt(handle, CURLOPT_WRITEDATA, coTask); if (task->background) { curl_easy_setopt(handle, CURLOPT_NOPROGRESS, false); curl_easy_setopt(handle, CURLOPT_PROGRESSDATA, task.get()); curl_easy_setopt(handle, CURLOPT_PROGRESSFUNCTION, _progressCallbackProc); } else { curl_easy_setopt(handle, CURLOPT_NOPROGRESS, true); } curl_easy_setopt(handle, CURLOPT_FAILONERROR, true); curl_easy_setopt(handle, CURLOPT_NOSIGNAL, 1L); curl_easy_setopt(handle, CURLOPT_OPENSOCKETFUNCTION, _openSocketCallback); curl_easy_setopt(handle, CURLOPT_OPENSOCKETDATA, coTask); if (forContent) { /** if server acceptRanges and local has part of file, we continue to download **/ if (coTask->_acceptRanges && coTask->_totalBytesReceived > 0) { char buf[128]; sprintf(buf, "%" PRId64 "-", coTask->_totalBytesReceived); curl_easy_setopt(handle, CURLOPT_RANGE, buf); curl_easy_setopt(handle, CURLOPT_RESUME_FROM_LARGE, (curl_off_t)coTask->_totalBytesReceived); } } else { // get header options curl_easy_setopt(handle, CURLOPT_HEADER, 1); curl_easy_setopt(handle, CURLOPT_NOBODY, 1); } // if (!sProxy.empty()) // { // curl_easy_setopt(curl, CURLOPT_PROXY, sProxy.c_str()); // } if (hints.timeoutInSeconds) { curl_easy_setopt(handle, CURLOPT_CONNECTTIMEOUT, hints.timeoutInSeconds); } static const int32_t LOW_SPEED_LIMIT = 1; static const int32_t LOW_SPEED_TIME = 10; curl_easy_setopt(handle, CURLOPT_LOW_SPEED_LIMIT, LOW_SPEED_LIMIT); curl_easy_setopt(handle, CURLOPT_LOW_SPEED_TIME, LOW_SPEED_TIME); curl_easy_setopt(handle, CURLOPT_SSL_VERIFYHOST, 0); curl_easy_setopt(handle, CURLOPT_SSL_VERIFYPEER, 0); static const int MAX_REDIRS = 5; if (MAX_REDIRS) { curl_easy_setopt(handle, CURLOPT_FOLLOWLOCATION, true); curl_easy_setopt(handle, CURLOPT_MAXREDIRS, MAX_REDIRS); } coTask->_curl = handle; return CURLE_OK; } // get header info, if success set handle to content download state bool _getHeaderInfoProc(CURL* handle, DownloadTaskCURL* coTask) { CURLcode rc = CURLE_OK; do { int32_t httpResponseCode = 0; rc = curl_easy_getinfo(handle, CURLINFO_RESPONSE_CODE, &httpResponseCode); if (CURLE_OK != rc) { break; } // Comment follow code to support ftp /*if (200 != httpResponseCode) { char buf[256] = {0}; sprintf(buf , "When request url(%s) header info, return unexcept http response code(%ld)" , wrapper.first->requestURL.c_str() , httpResponseCode); coTask.setErrorProc(DownloadTask::ERROR_IMPL_INTERNAL, CURLE_OK, buf); }*/ // curl_easy_getinfo(handle, CURLINFO_EFFECTIVE_URL, &effectiveUrl); // curl_easy_getinfo(handle, CURLINFO_CONTENT_TYPE, &contentType); double contentLen = 0; rc = curl_easy_getinfo(handle, CURLINFO_CONTENT_LENGTH_DOWNLOAD, &contentLen); if (CURLE_OK != rc) { break; } // std::transform(coTask._header.begin(), coTask._header.end(), coTask._header.begin(), ::toupper); bool acceptRanges = true; // (string::npos != coTask._header.find("ACCEPT-RANGES")) ? true : false; // get current file size int64_t fileSize = 0; if (acceptRanges && coTask->_tempFileName.length()) { fileSize = FileUtils::getInstance()->getFileSize(coTask->_tempFileName); } // set header info to coTask std::lock_guard lock(coTask->_mutex); coTask->_totalBytesExpected = (int64_t)contentLen; coTask->_acceptRanges = acceptRanges; if (acceptRanges && fileSize > 0) { coTask->_totalBytesReceived = fileSize; } coTask->_headerAchieved = true; } while (0); if (CURLE_OK != rc) { coTask->setErrorProc(DownloadTask::ERROR_IMPL_INTERNAL, rc, curl_easy_strerror(rc)); } return coTask->_headerAchieved; } void _threadProc() { DLLOG("++++DownloaderCURL::Impl::_threadProc begin %p", this); // the holder prevent DownloaderCURL::Impl class instance be destruct in main thread auto holder = this->shared_from_this(); auto thisThreadId = std::this_thread::get_id(); uint32_t countOfMaxProcessingTasks = this->hints.countOfMaxProcessingTasks; // init curl content CURLM* curlmHandle = curl_multi_init(); std::unordered_map> coTaskMap; int runningHandles = 0; CURLMcode mcode = CURLM_OK; int rc = 0; // select return code do { // check the thread should exit or not { std::lock_guard lock(_threadMutex); // if the Impl stoped, this->_thread.reset will be called, thus _thread.get_id() not equal with // thisThreadId if (thisThreadId != this->_thread.get_id()) { break; } } if (runningHandles) { // get timeout setting from multi-handle long timeoutMS = -1; curl_multi_timeout(curlmHandle, &timeoutMS); if (timeoutMS < 0) { timeoutMS = 1000; } /* get file descriptors from the transfers */ fd_set fdread; fd_set fdwrite; fd_set fdexcep; int maxfd = -1; FD_ZERO(&fdread); FD_ZERO(&fdwrite); FD_ZERO(&fdexcep); mcode = curl_multi_fdset(curlmHandle, &fdread, &fdwrite, &fdexcep, &maxfd); if (CURLM_OK != mcode) { break; } // do wait action if (maxfd == -1) { std::this_thread::sleep_for(std::chrono::milliseconds(CC_CURL_POLL_TIMEOUT_MS)); rc = 0; } else { struct timeval timeout; timeout.tv_sec = timeoutMS / 1000; timeout.tv_usec = (timeoutMS % 1000) * 1000; rc = select(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout); } if (rc < 0) { DLLOG(" _threadProc: select return unexpect code: %d", rc); } } if (!coTaskMap.empty()) { mcode = CURLM_CALL_MULTI_PERFORM; while (CURLM_CALL_MULTI_PERFORM == mcode) { mcode = curl_multi_perform(curlmHandle, &runningHandles); } if (CURLM_OK != mcode) { break; } struct CURLMsg* m; do { int msgq = 0; m = curl_multi_info_read(curlmHandle, &msgq); if (m && (m->msg == CURLMSG_DONE)) { CURL* curlHandle = m->easy_handle; CURLcode errCode = m->data.result; auto task = coTaskMap[curlHandle]; // remove from multi-handle curl_multi_remove_handle(curlmHandle, curlHandle); bool reinited = false; do { auto coTask = static_cast(task->_coTask.get()); if (CURLE_OK != errCode) { coTask->setErrorProc(DownloadTask::ERROR_IMPL_INTERNAL, errCode, curl_easy_strerror(errCode)); break; } // if the task is content download task, cleanup the handle if (coTask->_headerAchieved) { break; } // the task is get header task // first, we get info from response if (!_getHeaderInfoProc(curlHandle, coTask)) { // the error info has been set in _getHeaderInfoProc break; } // after get header info success // wrapper.second->_totalBytesReceived inited by local file size // if the local file size equal with the content size from header, the file has // downloaded finish if (coTask->_totalBytesReceived && coTask->_totalBytesReceived == coTask->_totalBytesExpected) { // the file has download complete // break to move this task to finish queue break; } // reinit curl handle for download content curl_easy_reset(curlHandle); auto error = _initCurlHandleProc(curlHandle, task, true); if (error != CURLE_OK) { coTask->setErrorProc(DownloadTask::ERROR_IMPL_INTERNAL, error, curl_easy_strerror(error)); break; } mcode = curl_multi_add_handle(curlmHandle, curlHandle); if (CURLM_OK != mcode) { coTask->setErrorProc(DownloadTask::ERROR_IMPL_INTERNAL, mcode, curl_multi_strerror(mcode)); break; } reinited = true; } while (0); if (reinited) { continue; } curl_easy_cleanup(curlHandle); DLLOG(" _threadProc task clean cur handle :%p with errCode:%d", curlHandle, errCode); // remove from coTaskMap coTaskMap.erase(curlHandle); // remove from _processSet { std::lock_guard lock(_processMutex); if (_processSet.end() != _processSet.find(task)) { _processSet.erase(task); } } if (task->background) _owner->_onDownloadFinished(*task); else { std::lock_guard lock(_finishedMutex); _finishedQueue.push_back(task); } } } while (m); } // process tasks in _requestList auto size = coTaskMap.size(); while (0 == countOfMaxProcessingTasks || size < countOfMaxProcessingTasks) { // get task wrapper from request queue std::shared_ptr task; { std::lock_guard lock(_requestMutex); if (!_requestQueue.empty()) { task = _requestQueue.front(); _requestQueue.pop_front(); } } // if request queue is empty, the wrapper.first is nullptr if (!task) { break; } auto coTask = static_cast(task->_coTask.get()); coTask->initProc(); // create curl handle from task and add into curl multi handle CURL* curlHandle = curl_easy_init(); if (nullptr == curlHandle) { coTask->setErrorProc(DownloadTask::ERROR_IMPL_INTERNAL, 0, "Alloc curl handle failed."); _owner->_onDownloadFinished(*task); continue; } // init curl handle for get header info _initCurlHandleProc(curlHandle, task); // add curl handle to process list mcode = curl_multi_add_handle(curlmHandle, curlHandle); if (CURLM_OK != mcode) { coTask->setErrorProc(DownloadTask::ERROR_IMPL_INTERNAL, mcode, curl_multi_strerror(mcode)); _owner->_onDownloadFinished(*task); continue; } DLLOG(" _threadProc task create curl handle:%p", curlHandle); coTaskMap[curlHandle] = task; std::lock_guard lock(_processMutex); _processSet.insert(task); } } while (!coTaskMap.empty()); _tasksFinished = true; curl_multi_cleanup(curlmHandle); DLLOG("----DownloaderCURL::Impl::_threadProc end"); } std::thread _thread; std::atomic_bool _tasksFinished{}; std::deque> _requestQueue; std::set> _processSet; std::deque> _finishedQueue; mutable std::mutex _threadMutex; std::mutex _requestMutex; std::mutex _processMutex; std::mutex _finishedMutex; public: DownloaderCURL* _owner = nullptr; }; //////////////////////////////////////////////////////////////////////////////// // Implementation DownloaderCURL DownloaderCURL::DownloaderCURL(const DownloaderHints& hints) : _impl(std::make_shared()), _currTask(nullptr) { DLLOG("Construct DownloaderCURL %p", this); _impl->hints = hints; _impl->_owner = this; _transferDataToBuffer = [this](void* buf, int64_t len) -> int64_t { DownloadTaskCURL& coTask = *_currTask; int64_t dataLen = coTask._buf.size(); if (len < dataLen) { return 0; } memcpy(buf, coTask._buf.data(), dataLen); coTask._buf.resize(0); return dataLen; }; } DownloaderCURL::~DownloaderCURL() { if (_scheduler) { _scheduler->unschedule(_schedulerKey, this); _scheduler->release(); } _impl->stop(); DLLOG("Destruct DownloaderCURL %p", this); } void DownloaderCURL::startTask(std::shared_ptr& task) { DownloadTaskCURL* coTask = new DownloadTaskCURL(*this); task->_coTask.reset(coTask); // coTask auto managed by task if (coTask->init(task->storagePath, _impl->hints.tempFileNameSuffix)) { DLLOG("DownloaderCURL: createTask: Id(%d)", coTask->serialId); _impl->addTask(task, coTask); _impl->run(); if (!task->background) { _lazyScheduleUpdate(); _scheduler->resumeTarget(this); } } else { task.reset(); cocos2d::log("DownloaderCURL createTask fail, error: %d, detail: %s", coTask->_errCode, coTask->_errDescription.c_str()); } } void DownloaderCURL::_lazyScheduleUpdate() { if (!_scheduler) { _scheduler = Director::getInstance()->getScheduler(); _scheduler->retain(); char key[128]; sprintf(key, "DownloaderCURL(%p)", this); _schedulerKey = key; _scheduler->schedule(std::bind(&DownloaderCURL::_onUpdate, this, std::placeholders::_1), this, 0.1f, true, _schedulerKey); } } void DownloaderCURL::_onUpdate(float) { std::vector> tasks; // update processing tasks _impl->getProcessTasks(tasks); for (auto& task : tasks) { DownloadTaskCURL& coTask = static_cast(*task->_coTask); std::lock_guard lock(coTask._mutex); if (coTask._bytesReceived) { _currTask = &coTask; _updateTaskProgressInfo(*task); onTaskProgress(*task, _transferDataToBuffer); _currTask = nullptr; coTask._bytesReceived = 0; } } tasks.clear(); // update finished tasks _impl->getFinishedTasks(tasks); if (_impl->stopped()) { if (_scheduler) _scheduler->pauseTarget(this); } for (auto& task : tasks) { _onDownloadFinished(*task); } } void DownloaderCURL::_updateTaskProgressInfo(DownloadTask& task, int64_t totalExpected) { auto& coTask = static_cast(*task._coTask); task.progressInfo.bytesReceived = coTask._bytesReceived; task.progressInfo.totalBytesReceived = coTask._totalBytesReceived; task.progressInfo.totalBytesExpected = totalExpected < 0 ? coTask._totalBytesExpected : totalExpected; task.progressInfo.speedInBytes = coTask._speed; } void DownloaderCURL::_onDownloadFinished(DownloadTask& task, int checkState) { auto& coTask = static_cast(*task._coTask); // if there is bytesReceived, call progress update first if (coTask._bytesReceived) { _currTask = &coTask; _updateTaskProgressInfo(task); onTaskProgress(task, _transferDataToBuffer); coTask._bytesReceived = 0; _currTask = nullptr; } // if file task, close file handle and rename file if needed if (coTask._fs) { do { auto pFileUtils = FileUtils::getInstance(); coTask._fs.reset(); coTask._fsMd5.reset(); if (checkState & kCheckSumStateSucceed) // No need download { auto fsOrigin = pFileUtils->openFileStream(coTask._fileName, FileStream::Mode::READ); if (fsOrigin) { fsOrigin->seek(0, SEEK_END); _updateTaskProgressInfo(task, fsOrigin->tell()); coTask._errCode = DownloadTask::ERROR_NO_ERROR; coTask._errCodeInternal = 0; coTask._errDescription = ""; pFileUtils->removeFile(coTask._tempFileName); onTaskProgress(task, _transferDataToBuffer); fsOrigin = nullptr; } else { coTask._errCode = DownloadTask::ERROR_ORIGIN_FILE_MISSING; coTask._errCodeInternal = 0; coTask._errDescription = "Check file md5 succeed, but the origin file is missing!"; pFileUtils->removeFile(coTask._checksumFileName); pFileUtils->removeFile(coTask._tempFileName); } break; } if (coTask._fileName.empty() || DownloadTask::ERROR_NO_ERROR != coTask._errCode) { if (coTask._errCodeInternal == CURLE_RANGE_ERROR) { // If CURLE_RANGE_ERROR, means the server not support resume from download. pFileUtils->removeFile(coTask._checksumFileName); pFileUtils->removeFile(coTask._tempFileName); } break; } // if file already exist, remove it if (pFileUtils->isFileExistInternal(coTask._fileName)) { if (!pFileUtils->removeFile(coTask._fileName)) { coTask._errCode = DownloadTask::ERROR_REMOVE_FILE_FAILED; coTask._errCodeInternal = errno; coTask._errDescription = "Can't remove old file: "; coTask._errDescription.append(coTask._fileName); break; } } // Try check sum with md5 digest std::string realMd5; if (coTask.checkFileMd5(task.checksum, &realMd5) & kCheckSumStateFailed) { coTask._errCode = DownloadTask::ERROR_CHECK_SUM_FAILED; coTask._errCodeInternal = 0; coTask._errDescription = StringUtils::format("Check file: %s md5 failed, required:%s, real:%s", coTask._fileName.c_str(), task.checksum.c_str(), realMd5.c_str()); pFileUtils->removeFile(coTask._checksumFileName); pFileUtils->removeFile(coTask._tempFileName); break; } // Rename file work fine. if (pFileUtils->renameFile(coTask._tempFileName, coTask._fileName)) { // success, remove storage from set DownloadTaskCURL::_sStoragePathSet.erase(coTask._tempFileName); break; } // failed coTask._errCode = DownloadTask::ERROR_RENAME_FILE_FAILED; coTask._errCodeInternal = 0; coTask._errDescription = "Can't renamefile from: "; coTask._errDescription.append(coTask._tempFileName); coTask._errDescription.append(" to: "); coTask._errDescription.append(coTask._fileName); } while (0); } // needn't lock coTask here, because tasks has removed form _impl onTaskFinish(task, coTask._errCode, coTask._errCodeInternal, coTask._errDescription, coTask._buf); DLLOG(" DownloaderCURL: finish Task: Id(%d)", coTask.serialId); } } // namespace network } // namespace cocos2d