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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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#define FORBIDDEN_SYMBOL_ALLOW_ALL
#include "backends/networking/curl/curljsonrequest.h"
#include "backends/networking/curl/connectionmanager.h"
#include "backends/networking/curl/networkreadstream.h"
#include "common/debug.h"
#include "common/json.h"
#include <curl/curl.h>
namespace Networking {
CurlJsonRequest::CurlJsonRequest(JsonCallback cb, ErrorCallback ecb, Common::String url) :
CurlRequest(nullptr, ecb, url), _jsonCallback(cb), _contentsStream(DisposeAfterUse::YES),
_buffer(new byte[CURL_JSON_REQUEST_BUFFER_SIZE]) {}
CurlJsonRequest::~CurlJsonRequest() {
delete _jsonCallback;
delete[] _buffer;
}
char *CurlJsonRequest::getPreparedContents() {
//write one more byte in the end
byte zero[1] = { 0 };
_contentsStream.write(zero, 1);
//replace all "bad" bytes with '.' character
byte *result = _contentsStream.getData();
uint32 size = _contentsStream.size();
for (uint32 i = 0; i < size; ++i) {
if (result[i] == '\n') result[i] = ' '; //yeah, kinda stupid
else if (result[i] < 0x20 || result[i] > 0x7f)
result[i] = '.';
}
//make it zero-terminated string
result[size - 1] = '\0';
return (char *)result;
}
void CurlJsonRequest::handle() {
if (!_stream) _stream = makeStream();
if (_stream) {
uint32 readBytes = _stream->read(_buffer, CURL_JSON_REQUEST_BUFFER_SIZE);
if (readBytes != 0)
if (_contentsStream.write(_buffer, readBytes) != readBytes)
warning("MemoryWriteStreamDynamic was unable to write all the bytes");
if (_stream->eos()) {
char *contents = getPreparedContents();
Common::JSONValue *json = Common::JSON::parse(contents);
if (json) {
finishJson(json); //it's JSON even if's not 200 OK? That's fine!..
} else {
if (_stream->httpResponseCode() == 200) //no JSON, but 200 OK? That's fine!..
finishJson(nullptr);
else
finishError(ErrorResponse(this, false, true, contents, _stream->httpResponseCode()));
}
}
}
}
void CurlJsonRequest::restart() {
if (_stream) delete _stream;
_stream = nullptr;
_contentsStream = Common::MemoryWriteStreamDynamic(DisposeAfterUse::YES);
//with no stream available next handle() will create another one
}
void CurlJsonRequest::finishJson(Common::JSONValue *json) {
Request::finishSuccess();
if (_jsonCallback) (*_jsonCallback)(JsonResponse(this, json)); //potential memory leak, free it in your callbacks!
else delete json;
}
bool CurlJsonRequest::jsonIsObject(Common::JSONValue *item, const char *warningPrefix) {
if (item == nullptr) {
warning("%s: passed item is NULL", warningPrefix);
return false;
}
if (item->isObject()) return true;
warning("%s: passed item is not an object!", warningPrefix);
debug(9, "%s", item->stringify(true).c_str());
return false;
}
bool CurlJsonRequest::jsonContainsString(Common::JSONObject &item, const char *key, const char *warningPrefix) {
if (!item.contains(key)) {
warning("%s: passed item misses the \"%s\" attribute!", warningPrefix, key);
return false;
}
if (item.getVal(key)->isString()) return true;
warning("%s: passed item's \"%s\" attribute is not a string!", warningPrefix, key);
debug(9, "%s", item.getVal(key)->stringify(true).c_str());
return false;
}
bool CurlJsonRequest::jsonContainsIntegerNumber(Common::JSONObject &item, const char *key, const char *warningPrefix) {
if (!item.contains(key)) {
warning("%s: passed item misses the \"%s\" attribute!", warningPrefix, key);
return false;
}
if (item.getVal(key)->isIntegerNumber()) return true;
warning("%s: passed item's \"%s\" attribute is not an integer!", warningPrefix, key);
debug(9, "%s", item.getVal(key)->stringify(true).c_str());
return false;
}
} // End of namespace Networking
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