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/*
* Copyright (C) 2013, 2014, 2015 by the Konclude Developer Team.
*
* This file is part of the reasoning system Konclude.
* For details and support, see <http://konclude.com/>.
*
* Konclude is free software: you can redistribute it and/or modify it under
* the terms of version 2.1 of the GNU Lesser General Public License (LGPL2.1)
* as published by the Free Software Foundation.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Konclude. If not, see <http://www.gnu.org/licenses/>.
*
* Konclude 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. For more
* details, see GNU Lesser General Public License.
*
*/
#include "CQtHttpRequestBodyOnlyParser.h"
namespace Konclude {
namespace Network {
namespace HTTP {
CQtHttpRequestBodyOnlyParser::CQtHttpRequestBodyOnlyParser() {
mHeaderLineReadBufferSize = 20000;
// maximum header size 10 KByte
mMaxHeaderDataSize = 1024*10;
mHeaderLineReadBuffer = new char[mHeaderLineReadBufferSize+1];
mHeaderLineReadBuffer[mHeaderLineReadBufferSize] = '\0';
// maximum body size 2 GByte
mMaxBodyDataSize = Q_INT64_C(1024*1024*1024*2);
mBodyData = nullptr;
mHeaderContentLengthString = QString("Content-Length").toUpper();
mHeaderConnectionString = QString("Connection").toUpper();
mHeaderConnectionCloseString = QString("close").toUpper();
reset();
}
CQtHttpRequestBodyOnlyParser::~CQtHttpRequestBodyOnlyParser() {
delete mBodyData;
}
CQtHttpRequestParser* CQtHttpRequestBodyOnlyParser::reset() {
mHeaderLineReadBufferPosition = 0;
mReadBodyDataSize = 0;
mErrorString.clear();
mHeaderData.clear();
delete mBodyData;
mBodyData = nullptr;
mRequestError = false;
mRequestCompleted = false;
mHeaderCompleted = false;
mHeaderMethodProtocolURIParsed = false;
mAfterwardsCloseConnection = false;
mReadHeaderDataSize = 0;
mExpectedBodyLength = 0;
return this;
}
QByteArray* CQtHttpRequestBodyOnlyParser::takeBodyData() {
QByteArray* bodyData = mBodyData;
mBodyData = nullptr;
return bodyData;
}
bool CQtHttpRequestBodyOnlyParser::readFromDevice(QIODevice* readDevice) {
cint64 availableBytesCount = readDevice->bytesAvailable();
while (availableBytesCount > 1 && !mRequestError && !mRequestCompleted) {
if (!mHeaderCompleted) {
if (mHeaderLineReadBufferSize - mHeaderLineReadBufferPosition <= 0) {
mRequestError = true;
mErrorString = QString("Line in header is longer than allowed, '%1' is longer than %2").arg(QString::fromUtf8(mHeaderLineReadBuffer)).arg(mHeaderLineReadBufferSize);
} else if (mMaxHeaderDataSize - mReadHeaderDataSize <= 0) {
mRequestError = true;
mErrorString = QString("Header is longer than allowed");
} else {
cint64 maxToReadLine = mHeaderLineReadBufferSize - mHeaderLineReadBufferPosition + 1;
bool lineCompleted = false;
cint64 maxToAvailableRead = qMin(readDevice->bytesAvailable(),maxToReadLine);
maxToAvailableRead = qMin(maxToAvailableRead,mMaxHeaderDataSize-mReadHeaderDataSize+1);
cint64 read = readDevice->readLine(&mHeaderLineReadBuffer[mHeaderLineReadBufferPosition],maxToAvailableRead);
cint64 newPos = mHeaderLineReadBufferPosition+read;
if (mHeaderLineReadBuffer[newPos-1] == '\n') {
lineCompleted = true;
}
//if (newPos == 1 && mHeaderLineReadBuffer[newPos-1] == 13) {
// lineCompleted = true;
// if (mExpectedBodyLength == 0) {
// mRequestCompleted = true;
// }
//}
mHeaderLineReadBufferPosition = newPos;
mReadHeaderDataSize += mHeaderLineReadBufferPosition;
if (lineCompleted) {
if (!mHeaderMethodProtocolURIParsed) {
mHeaderMethodProtocolURIParsed = true;
parseHttpMethodProtocolURI();
} else {
parseHttpRequestHeader();
}
mHeaderLineReadBufferPosition = 0;
}
}
} else {
if (mExpectedBodyLength <= 0) {
mRequestCompleted = true;
} else {
if (mExpectedBodyLength > mMaxBodyDataSize) {
mRequestError = true;
mErrorString = QString("Expected body '%1' is longer than allowed '%2'").arg(mExpectedBodyLength).arg(mMaxBodyDataSize);
} else {
if (mBodyData == nullptr) {
mBodyData = new QByteArray();
mBodyData->resize(mExpectedBodyLength);
}
cint64 maxReadBodyData = mExpectedBodyLength - mReadBodyDataSize;
maxReadBodyData = qMin(maxReadBodyData,mHeaderLineReadBufferSize);
qint64 read = readDevice->read(mHeaderLineReadBuffer,maxReadBodyData);
mBodyData->replace(mReadBodyDataSize,read,mHeaderLineReadBuffer);
mReadBodyDataSize += read;
if (mReadBodyDataSize >= mExpectedBodyLength) {
mRequestCompleted = true;
}
}
}
}
availableBytesCount = readDevice->bytesAvailable();
}
return !mRequestError;
}
cint64 CQtHttpRequestBodyOnlyParser::getNextCharacterPosition(char character, cint64 searchStartPos) {
for (cint64 i = searchStartPos; i < mHeaderLineReadBufferSize; ++i) {
if (mHeaderLineReadBuffer[i] == character) {
return i;
}
}
return mHeaderLineReadBufferSize;
}
void CQtHttpRequestBodyOnlyParser::parseHttpMethodProtocolURI() {
cint64 currSpacePos = 0;
cint64 nextSpacePos = getNextCharacterPosition(' ',currSpacePos);
bool methodProtocolURIParseError = false;
if (nextSpacePos == mHeaderLineReadBufferSize) {
methodProtocolURIParseError = true;
} else {
mRequestMethod = QString::fromUtf8(&mHeaderLineReadBuffer[currSpacePos],nextSpacePos-currSpacePos);
currSpacePos = nextSpacePos+1;
nextSpacePos = getNextCharacterPosition(' ',currSpacePos);
if (nextSpacePos == mHeaderLineReadBufferSize) {
methodProtocolURIParseError = true;
} else {
mRequestURIString = QString::fromUtf8(&mHeaderLineReadBuffer[currSpacePos],nextSpacePos-currSpacePos);
currSpacePos = nextSpacePos+1;
nextSpacePos = mHeaderLineReadBufferPosition-2;
mRequestProtocol = QString::fromUtf8(&mHeaderLineReadBuffer[currSpacePos],nextSpacePos-currSpacePos);
}
}
if (methodProtocolURIParseError) {
mRequestError = true;
mErrorString = QString("Could not parse method, protocol and uri from request '%1'").arg(QString::fromUtf8(mHeaderLineReadBuffer));
}
}
void CQtHttpRequestBodyOnlyParser::parseHttpRequestHeader() {
if (mHeaderLineReadBufferPosition == 2) {
// empty new line, end of header
mHeaderCompleted = true;
} else {
cint64 doublePointPos = getNextCharacterPosition(':',0);
QString headerKey = QString::fromUtf8(mHeaderLineReadBuffer,doublePointPos);
if (QString::compare(headerKey.trimmed(),mHeaderContentLengthString,Qt::CaseInsensitive) == 0) {
QString contentLengthValueString = QString::fromUtf8(&mHeaderLineReadBuffer[doublePointPos+1],mHeaderLineReadBufferPosition-3-doublePointPos);
bool successfulParsedExpectedContentLength = false;
QString trimmedContentLengthValueString = contentLengthValueString.trimmed();
mExpectedBodyLength = trimmedContentLengthValueString.toLong(&successfulParsedExpectedContentLength);
if (!successfulParsedExpectedContentLength) {
mRequestError = true;
mErrorString = QString("Could not parse content length value from '%1'").arg(QString::fromUtf8(mHeaderLineReadBuffer));
}
} else {
if (QString::compare(headerKey.trimmed(),mHeaderConnectionString,Qt::CaseInsensitive) == 0) {
QString connectionValueString = QString::fromUtf8(&mHeaderLineReadBuffer[doublePointPos+1],mHeaderLineReadBufferPosition-3-doublePointPos);
if (QString::compare(connectionValueString,mHeaderConnectionString,Qt::CaseInsensitive) == 0) {
mAfterwardsCloseConnection = true;
}
}
}
}
}
CHttpRequest* CQtHttpRequestBodyOnlyParser::takeParsedHttpRequest() {
CQtHttpRequest* request = new CQtHttpRequest(mRequestURIString,mBodyData);
return request;
}
bool CQtHttpRequestBodyOnlyParser::hasHttpRequestParsingError() {
return mRequestError;
}
bool CQtHttpRequestBodyOnlyParser::hasHttpRequestParsingCompleted() {
return mRequestCompleted;
}
QString CQtHttpRequestBodyOnlyParser::getHttpRequestParsingErrorString() {
return mErrorString;
}
bool CQtHttpRequestBodyOnlyParser::hasRequestedCloseConnection() {
return mAfterwardsCloseConnection;
}
}; // end namespace HTTP
}; // end namespace Network
}; // end namespace Konclude
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