File: postrequest.cpp

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/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#include "backends/networking/curl/postrequest.h"
#include "backends/networking/curl/connectionmanager.h"
#include "backends/networking/curl/curljsonrequest.h"
#include "backends/networking/curl/networkreadstream.h"
#include "common/formats/json.h"

namespace Networking {

PostRequest::PostRequest(const Common::String &url, Networking::JSONValueCallback cb, Networking::ErrorCallback ecb):
	Networking::Request(nullptr, ecb), _url(url), _jsonCallback(cb),
	_workingRequest(nullptr), _ignoreCallback(false), _postData(nullptr), _postLen(0), _jsonData(nullptr) {

	_contentType = "application/octet-stream";
}

PostRequest::~PostRequest() {
	_ignoreCallback = true;
	if (_workingRequest)
		_workingRequest->finish();
	delete _jsonCallback;
}

void PostRequest::setPostData(byte *postData, int postLen) {
	_postData = postData;
	_postLen = postLen;

	_contentType = "application/octet-stream";
}

void PostRequest::setJSONData(Common::JSONValue *jsonData) {
	_jsonData = jsonData;

	_contentType = "application/json";
}

void PostRequest::start() {
	_ignoreCallback = true;
	if (_workingRequest)
		_workingRequest->finish();
	_ignoreCallback = false;

	Networking::JsonCallback innerCallback = new Common::Callback<PostRequest, const Networking::JsonResponse &>(this, &PostRequest::responseCallback);
	Networking::ErrorCallback errorResponseCallback = new Common::Callback<PostRequest, const Networking::ErrorResponse &>(this, &PostRequest::errorCallback);
	Networking::CurlJsonRequest *request = new Networking::CurlJsonRequest(innerCallback, errorResponseCallback, _url);

	if (_postData && _jsonData) {
		warning("Error, both data and JSON present while calling %s", _url.c_str());

		_jsonData = nullptr;
	}

	request->addHeader(Common::String::format("Content-Type: %s", _contentType.c_str()));

	if (_postData)
		request->setBuffer(_postData, _postLen);


	if (_jsonData)
		request->addPostField(Common::JSON::stringify(_jsonData));

	_workingRequest = ConnMan.addRequest(request);
}

void PostRequest::responseCallback(const Networking::JsonResponse &response) {
	const Common::JSONValue *json = response.value;
	_workingRequest = nullptr;
	if (_ignoreCallback) {
		delete json;
		return;
	}
	if (response.request) _date = response.request->date();

	Networking::ErrorResponse error(this, "PostRequest::responseCallback: unknown error");
	const Networking::CurlJsonRequest *rq = (const Networking::CurlJsonRequest *)response.request;
	if (rq && rq->getNetworkReadStream())
		error.httpResponseCode = rq->getNetworkReadStream()->httpResponseCode();

	if (json == nullptr) {
		error.response = "Failed to parse JSON, null passed!";
		finishError(error);
		return;
	}

	finishSuccess();

	if (_jsonCallback)
		(*_jsonCallback)(json);

	delete json;
}

void PostRequest::errorCallback(const Networking::ErrorResponse &error) {
	_workingRequest = nullptr;
	if (_ignoreCallback)
		return;
	if (error.request)
		_date = error.request->date();
	finishError(error);
}

void PostRequest::handle() {}

void PostRequest::restart() { start(); }

Common::String PostRequest::date() const { return _date; }

} // End of namespace Networking