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/*
* 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 "UBAbstractPublisher.h"
#include <QtXml>
#include <openssl/aes.h>
#include <openssl/evp.h>
#include "core/UBSettings.h"
#include "core/UBApplication.h"
#include "network/UBNetworkAccessManager.h"
#include "network/UBServerXMLHttpRequest.h"
#include "core/memcheck.h"
UBAbstractPublisher::UBAbstractPublisher(QObject *parent)
: QObject(parent)
, mTokenRequest(0)
{
// NOOP
}
void UBAbstractPublisher::authenticate()
{
sendAuthenticationTokenRequest();
}
void UBAbstractPublisher::sendAuthenticationTokenRequest()
{
QUrl publishingEndpoint = QUrl(UBSettings::settings()->publishingAuthenticationUrl);
mTokenRequest = new UBServerXMLHttpRequest(UBNetworkAccessManager::defaultAccessManager());
mTokenRequest->setVerbose(true);
UBApplication::showMessage(tr("Contacting %1").arg(UBSettings::settings()->uniboardWebUrl->get().toString()), true);
connect(mTokenRequest, SIGNAL(finished(bool, const QByteArray&)), this, SLOT(processAuthenticationTokenResponse(bool, const QByteArray&)));
mTokenRequest->get(publishingEndpoint);
}
void UBAbstractPublisher::processAuthenticationTokenResponse(bool success, const QByteArray& payload)
{
if (mTokenRequest)
mTokenRequest->deleteLater();
if (success)
{
/*
<publishing-token>
...
<token>iFzZIXhPxHTLhJeHWFF9BDVblMDWU546rpzoEEfxMSLrftMq444w4BuoisnNtRAjm6ht3hKUIHmMKA3xGN2Hlaof8tbYNLHmzf2R1dO439vnXFiHMPLBi7nFpSEPtBNJ</token>
<uuid>26fea4c0-1319-012d-d0fc-001f5b3d920c</uuid>
...
</publishing-token>
*/
QDomDocument doc("publishing-token");
doc.setContent(payload, false);
QDomElement root = doc.documentElement();
const QString token = root.firstChildElement("token").text();
const QString uuid = root.firstChildElement("uuid").text();
if (token.length() > 0 && uuid.length() > 0)
{
const QByteArray encrypted = encrypt(token);
QString encryptedBase64 = QString::fromAscii(encrypted.toBase64());
UBApplication::showMessage(tr("Found %1").arg(UBSettings::settings()->uniboardWebUrl->get().toString()), false);
emit authenticated(QUuid(uuid), encryptedBase64);
}
else
{
qWarning() << "Authentication failed" << QString::fromUtf8(payload);
emit authenticationFailure();
UBApplication::showMessage(tr("Cannot Authenticate with %1").arg(UBSettings::settings()->uniboardWebUrl->get().toString()));
}
}
else
{
qWarning() << "Authentication failed" << QString::fromUtf8(payload);
emit authenticationFailure();
UBApplication::showMessage(tr("Cannot Authenticate with %1").arg(UBSettings::settings()->uniboardWebUrl->get().toString()));
}
}
QByteArray UBAbstractPublisher::encrypt(const QString& clear)
{
static const char *key = "9ecHaspud9uD9ste5erAchehefrup3ec";
EVP_CIPHER_CTX aesEncryptContext;
EVP_CIPHER_CTX_init(&aesEncryptContext);
EVP_EncryptInit_ex(&aesEncryptContext, EVP_aes_256_ecb(), NULL, (const unsigned char*)key, NULL);
QByteArray clearData = clear.toUtf8();
int cipheredLength = clearData.length() + AES_BLOCK_SIZE;
int paddingLength = 0;
unsigned char *cipherText = (unsigned char *)malloc(cipheredLength);
if(!EVP_EncryptInit_ex(&aesEncryptContext, NULL, NULL, NULL, NULL))
return QByteArray();
if(!EVP_EncryptUpdate(&aesEncryptContext, cipherText, &cipheredLength, (unsigned char *)clearData.data(), clearData.length()))
return QByteArray();
/* update ciphertext with the final remaining bytes */
if(!EVP_EncryptFinal_ex(&aesEncryptContext, cipherText + cipheredLength, &paddingLength))
return QByteArray();
QByteArray cipheredData((const char *)cipherText, cipheredLength + paddingLength);
free(cipherText);
EVP_CIPHER_CTX_cleanup(&aesEncryptContext);
return cipheredData;
}