Initial commit
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/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#define FORBIDDEN_SYMBOL_EXCEPTION_asctime
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#define FORBIDDEN_SYMBOL_EXCEPTION_clock
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#define FORBIDDEN_SYMBOL_EXCEPTION_ctime
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#define FORBIDDEN_SYMBOL_EXCEPTION_difftime
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#define FORBIDDEN_SYMBOL_EXCEPTION_FILE
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#define FORBIDDEN_SYMBOL_EXCEPTION_getdate
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#define FORBIDDEN_SYMBOL_EXCEPTION_gmtime
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#define FORBIDDEN_SYMBOL_EXCEPTION_localtime
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#define FORBIDDEN_SYMBOL_EXCEPTION_mktime
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#define FORBIDDEN_SYMBOL_EXCEPTION_strcpy
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#define FORBIDDEN_SYMBOL_EXCEPTION_strdup
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#define FORBIDDEN_SYMBOL_EXCEPTION_time
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#include <emscripten.h>
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#include <emscripten/fetch.h>
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#include "backends/networking/http/emscripten/networkreadstream-emscripten.h"
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#include "backends/networking/http/networkreadstream.h"
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#include "base/version.h"
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#include "common/debug.h"
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namespace Networking {
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NetworkReadStream *NetworkReadStream::make(const char *url, RequestHeaders *headersList, const Common::String &postFields, bool uploading, bool usingPatch, bool keepAlive, long keepAliveIdle, long keepAliveInterval) {
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return new NetworkReadStreamEmscripten(url, headersList, postFields, uploading, usingPatch, keepAlive, keepAliveIdle, keepAliveInterval);
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}
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NetworkReadStream *NetworkReadStream::make(const char *url, RequestHeaders *headersList, const Common::HashMap<Common::String, Common::String> &formFields, const Common::HashMap<Common::String, Common::Path> &formFiles, bool keepAlive, long keepAliveIdle, long keepAliveInterval) {
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return new NetworkReadStreamEmscripten(url, headersList, formFields, formFiles, keepAlive, keepAliveIdle, keepAliveInterval);
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}
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NetworkReadStream *NetworkReadStream::make(const char *url, RequestHeaders *headersList, const byte *buffer, uint32 bufferSize, bool uploading, bool usingPatch, bool post, bool keepAlive, long keepAliveIdle, long keepAliveInterval) {
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return new NetworkReadStreamEmscripten(url, headersList, buffer, bufferSize, uploading, usingPatch, post, keepAlive, keepAliveIdle, keepAliveInterval);
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}
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void NetworkReadStreamEmscripten::emscriptenOnReadyStateChange(emscripten_fetch_t *fetch) {
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if (fetch->readyState != 2)
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return;
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size_t headersLengthBytes = emscripten_fetch_get_response_headers_length(fetch) + 1;
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char *headerString = (char *)malloc(headersLengthBytes);
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assert(headerString);
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emscripten_fetch_get_response_headers(fetch, headerString, headersLengthBytes);
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NetworkReadStreamEmscripten *stream = (NetworkReadStreamEmscripten *)fetch->userData;
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stream->addResponseHeaders(headerString, headersLengthBytes);
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free(headerString);
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}
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void NetworkReadStreamEmscripten::emscriptenOnProgress(emscripten_fetch_t *fetch) {
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/*
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if (fetch->totalBytes) {
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debug(5,"Downloading %s.. %.2f percent complete.", fetch->url, fetch->dataOffset * 100.0 / fetch->totalBytes);
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} else {
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debug(5,"Downloading %s.. %lld bytes complete.", fetch->url, fetch->dataOffset + fetch->numBytes);
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}
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debug(5,"Downloading %s.. %.2f %s complete. HTTP readyState: %hu. HTTP status: %hu - "
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"HTTP statusText: %s. Received chunk [%llu, %llu]",
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fetch->url,
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fetch->totalBytes > 0 ? (fetch->dataOffset + fetch->numBytes) * 100.0 / fetch->totalBytes : (fetch->dataOffset + fetch->numBytes),
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fetch->totalBytes > 0 ? "percent" : " bytes",
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fetch->readyState,
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fetch->status,
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fetch->statusText,
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fetch->dataOffset,
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fetch->dataOffset + fetch->numBytes);
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*/
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NetworkReadStreamEmscripten *stream = (NetworkReadStreamEmscripten *)fetch->userData;
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if (stream) {
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stream->setProgress(fetch->dataOffset, fetch->totalBytes);
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}
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}
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void NetworkReadStreamEmscripten::emscriptenOnSuccess(emscripten_fetch_t *fetch) {
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NetworkReadStreamEmscripten *stream = (NetworkReadStreamEmscripten *)fetch->userData;
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stream->emscriptenDownloadFinished(true);
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}
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void NetworkReadStreamEmscripten::emscriptenOnError(emscripten_fetch_t *fetch) {
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NetworkReadStreamEmscripten *stream = (NetworkReadStreamEmscripten *)fetch->userData;
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stream->emscriptenDownloadFinished(false);
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}
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void NetworkReadStreamEmscripten::emscriptenDownloadFinished(bool success) {
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_requestComplete = true;
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if (_emscripten_fetch->numBytes > 0) {
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// TODO: This could be done continuously during emscriptenOnProgress?
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this->_backingStream.write(_emscripten_fetch->data, _emscripten_fetch->numBytes);
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}
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this->setProgress(_emscripten_fetch->numBytes, _emscripten_fetch->numBytes);
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if (success) {
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debug(5, "NetworkReadStreamEmscripten::emscriptenHandleDownload Finished downloading %llu bytes from URL %s. HTTP status code: %d", _emscripten_fetch->numBytes, _emscripten_fetch->url, _emscripten_fetch->status);
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_success = true; // TODO: actually pass the result code from emscripten_fetch
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} else {
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debug(5, "NetworkReadStreamEmscripten::emscriptenHandleDownload Downloading %s failed, HTTP failure status code: %d, status text: %s", _emscripten_fetch->url, _emscripten_fetch->status, _emscripten_fetch->statusText);
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// Make a copy of the error message since _emscripten_fetch might be cleaned up
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if (_emscripten_fetch && _emscripten_fetch->statusText) {
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_errorBuffer = strdup(_emscripten_fetch->statusText);
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} else {
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_errorBuffer = strdup("Unknown error");
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}
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warning("NetworkReadStreamEmscripten::finished %s - Request failed (%s)", _emscripten_fetch_url, getError());
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}
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}
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void NetworkReadStreamEmscripten::resetStream() {
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_eos = _requestComplete = false;
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_sendingContentsSize = _sendingContentsPos = 0;
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_progressDownloaded = _progressTotal = 0;
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_emscripten_fetch = nullptr;
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_emscripten_request_headers = nullptr;
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free(_errorBuffer);
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_errorBuffer = nullptr;
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}
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void NetworkReadStreamEmscripten::initEmscripten(const char *url, RequestHeaders *headersList) {
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resetStream();
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emscripten_fetch_attr_init(_emscripten_fetch_attr);
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// convert header list
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// first get size of list
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int size = 0;
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if (headersList) {
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size = headersList->size();
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debug(5, "_emscripten_request_headers count: %d", size);
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}
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_emscripten_request_headers = new char *[size * 2 + 1];
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_emscripten_request_headers[size * 2] = 0; // header array needs to be null-terminated.
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int i = 0;
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if (headersList) {
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for (const Common::String &header : *headersList) {
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// Find the colon separator
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uint colonPos = header.findFirstOf(':');
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if (colonPos == Common::String::npos) {
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warning("NetworkReadStreamEmscripten: Malformed header (no colon): %s", header.c_str());
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continue;
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}
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// Split into key and value parts
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Common::String key = header.substr(0, colonPos);
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Common::String value = header.substr(colonPos + 1);
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// Trim whitespace from key and value
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key.trim();
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value.trim();
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// Store key and value as separate strings
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_emscripten_request_headers[i++] = strdup(key.c_str());
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_emscripten_request_headers[i++] = strdup(value.c_str());
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debug(9, "_emscripten_request_headers key='%s' value='%s'", key.c_str(), value.c_str());
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}
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}
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_emscripten_fetch_attr->requestHeaders = _emscripten_request_headers;
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strcpy(_emscripten_fetch_attr->requestMethod, "GET"); // todo: move down to setup buffer contents
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_emscripten_fetch_attr->attributes = EMSCRIPTEN_FETCH_LOAD_TO_MEMORY;
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_emscripten_fetch_attr->onerror = emscriptenOnError;
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_emscripten_fetch_attr->onprogress = emscriptenOnProgress;
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_emscripten_fetch_attr->onreadystatechange = emscriptenOnReadyStateChange;
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_emscripten_fetch_attr->onsuccess = emscriptenOnSuccess;
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_emscripten_fetch_attr->userData = this;
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}
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void NetworkReadStreamEmscripten::setupBufferContents(const byte *buffer, uint32 bufferSize, bool uploading, bool usingPatch, bool post) {
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if (uploading) {
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strcpy(_emscripten_fetch_attr->requestMethod, "PUT");
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_emscripten_fetch_attr->requestDataSize = bufferSize;
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_emscripten_fetch_attr->requestData = (const char *)buffer;
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} else if (usingPatch) {
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strcpy(_emscripten_fetch_attr->requestMethod, "PATCH");
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} else {
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if (post || bufferSize != 0) {
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strcpy(_emscripten_fetch_attr->requestMethod, "POST");
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_emscripten_fetch_attr->requestDataSize = bufferSize;
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_emscripten_fetch_attr->requestData = (const char *)buffer;
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}
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}
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debug(5, "NetworkReadStreamEmscripten::setupBufferContents uploading %s usingPatch %s post %s ->method %s", uploading ? "true" : "false", usingPatch ? "true" : "false", post ? "true" : "false", _emscripten_fetch_attr->requestMethod);
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_emscripten_fetch = emscripten_fetch(_emscripten_fetch_attr, _emscripten_fetch_url);
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}
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void NetworkReadStreamEmscripten::setupFormMultipart(const Common::HashMap<Common::String, Common::String> &formFields, const Common::HashMap<Common::String, Common::Path> &formFiles) {
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// set POST multipart upload form fields/files
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error("NetworkReadStreamEmscripten::setupFormMultipart not implemented");
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}
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/** Send <postFields>, using POST by default. */
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NetworkReadStreamEmscripten::NetworkReadStreamEmscripten(const char *url, RequestHeaders *headersList, const Common::String &postFields,
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bool uploading, bool usingPatch, bool keepAlive, long keepAliveIdle, long keepAliveInterval) :
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_emscripten_fetch_attr(new emscripten_fetch_attr_t()), _emscripten_fetch_url(url), _errorBuffer(nullptr),
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NetworkReadStream(keepAlive, keepAliveIdle, keepAliveInterval) {
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initEmscripten(url, headersList);
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setupBufferContents((const byte *)postFields.c_str(), postFields.size(), uploading, usingPatch, false);
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}
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/** Send <formFields>, <formFiles>, using POST multipart/form. */
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NetworkReadStreamEmscripten::NetworkReadStreamEmscripten(const char *url, RequestHeaders *headersList, const Common::HashMap<Common::String,
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Common::String> &formFields, const Common::HashMap<Common::String, Common::Path> &formFiles, bool keepAlive, long keepAliveIdle,
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long keepAliveInterval) : _emscripten_fetch_attr(new emscripten_fetch_attr_t()), _emscripten_fetch_url(url), _errorBuffer(nullptr),
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NetworkReadStream(keepAlive, keepAliveIdle, keepAliveInterval) {
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initEmscripten(url, headersList);
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setupFormMultipart(formFields, formFiles);
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}
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/** Send <buffer>, using POST by default. */
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NetworkReadStreamEmscripten::NetworkReadStreamEmscripten(const char *url, RequestHeaders *headersList, const byte *buffer, uint32 bufferSize,
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bool uploading, bool usingPatch, bool post, bool keepAlive, long keepAliveIdle, long keepAliveInterval) :
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_emscripten_fetch_attr(new emscripten_fetch_attr_t()), _emscripten_fetch_url(url), _errorBuffer(nullptr),
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NetworkReadStream(keepAlive, keepAliveIdle, keepAliveInterval) {
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initEmscripten(url, headersList);
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setupBufferContents(buffer, bufferSize, uploading, usingPatch, post);
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}
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NetworkReadStreamEmscripten::~NetworkReadStreamEmscripten() {
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if (_emscripten_fetch) {
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debug(5, "~NetworkReadStreamEmscripten: emscripten_fetch_close");
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emscripten_fetch_close(_emscripten_fetch);
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}
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// Free the headers array and its contents
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if (_emscripten_request_headers) {
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for (int i = 0; _emscripten_request_headers[i] != nullptr; ++i) {
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free(_emscripten_request_headers[i]); // Free each strdup'd string
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}
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delete[] _emscripten_request_headers;
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}
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}
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uint32 NetworkReadStreamEmscripten::read(void *dataPtr, uint32 dataSize) {
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uint32 actuallyRead = _backingStream.read(dataPtr, dataSize);
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// Only access _emscripten_fetch->url if _emscripten_fetch is valid
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// debug(5,"NetworkReadStreamEmscripten::read %u %s %s %s", actuallyRead, _eos ? "_eos" : "not _eos", _requestComplete ? "_requestComplete" : "_request not Complete", _emscripten_fetch ? _emscripten_fetch->url : "no-url");
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if (actuallyRead == 0) {
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if (_requestComplete)
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_eos = true;
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return 0;
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}
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return actuallyRead;
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}
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bool NetworkReadStreamEmscripten::hasError() const {
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return !_success;
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}
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const char *NetworkReadStreamEmscripten::getError() const {
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return _errorBuffer;
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}
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long NetworkReadStreamEmscripten::httpResponseCode() const {
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// return 200;
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unsigned short responseCode = 0;
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if (_emscripten_fetch)
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responseCode = _emscripten_fetch->status;
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debug(5, "NetworkReadStreamEmscripten::httpResponseCode %hu", responseCode);
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return responseCode;
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}
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Common::String NetworkReadStreamEmscripten::currentLocation() const {
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debug(5, "NetworkReadStreamEmscripten::currentLocation %s", _emscripten_fetch_url);
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return Common::String(_emscripten_fetch_url);
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}
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Common::HashMap<Common::String, Common::String> NetworkReadStreamEmscripten::responseHeadersMap() const {
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Common::HashMap<Common::String, Common::String> headers;
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const char *headerString = _responseHeaders.c_str();
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char **responseHeaders = emscripten_fetch_unpack_response_headers(headerString);
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assert(responseHeaders);
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int numHeaders = 0;
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for (; responseHeaders[numHeaders * 2]; ++numHeaders) {
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// Check both the header and its value are present.
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assert(responseHeaders[(numHeaders * 2) + 1]);
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headers[responseHeaders[numHeaders * 2]] = responseHeaders[(numHeaders * 2) + 1];
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}
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emscripten_fetch_free_unpacked_response_headers(responseHeaders);
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return headers;
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}
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} // namespace Networking
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