diff options
Diffstat (limited to 'src/network/ssl/qwindowscarootfetcher.cpp')
| -rw-r--r-- | src/network/ssl/qwindowscarootfetcher.cpp | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/src/network/ssl/qwindowscarootfetcher.cpp b/src/network/ssl/qwindowscarootfetcher.cpp new file mode 100644 index 0000000000..f83f96886c --- /dev/null +++ b/src/network/ssl/qwindowscarootfetcher.cpp @@ -0,0 +1,168 @@ +/**************************************************************************** +** +** Copyright (C) 2018 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtNetwork module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qwindowscarootfetcher_p.h" + +#include <QtCore/QThread> +#include <QtGlobal> + +#ifdef QSSLSOCKET_DEBUG +#include "qssl_p.h" // for debug categories +#include <QtCore/QElapsedTimer> +#endif + +#include "qsslsocket_p.h" // Transitively includes Wincrypt.h + +QT_BEGIN_NAMESPACE + +class QWindowsCaRootFetcherThread : public QThread +{ +public: + QWindowsCaRootFetcherThread() + { + qRegisterMetaType<QSslCertificate>(); + setObjectName(QStringLiteral("QWindowsCaRootFetcher")); + start(); + } + ~QWindowsCaRootFetcherThread() + { + quit(); + wait(15500); // worst case, a running request can block for 15 seconds + } +}; + +Q_GLOBAL_STATIC(QWindowsCaRootFetcherThread, windowsCaRootFetcherThread); + +QWindowsCaRootFetcher::QWindowsCaRootFetcher(const QSslCertificate &certificate, QSslSocket::SslMode sslMode) + : cert(certificate), mode(sslMode) +{ + moveToThread(windowsCaRootFetcherThread()); +} + +QWindowsCaRootFetcher::~QWindowsCaRootFetcher() +{ +} + +void QWindowsCaRootFetcher::start() +{ + QByteArray der = cert.toDer(); + PCCERT_CONTEXT wincert = CertCreateCertificateContext(X509_ASN_ENCODING, (const BYTE *)der.constData(), der.length()); + if (!wincert) { +#ifdef QSSLSOCKET_DEBUG + qCDebug(lcSsl, "QWindowsCaRootFetcher failed to convert certificate to windows form"); +#endif + emit finished(cert, QSslCertificate()); + deleteLater(); + return; + } + + CERT_CHAIN_PARA parameters; + memset(¶meters, 0, sizeof(parameters)); + parameters.cbSize = sizeof(parameters); + // set key usage constraint + parameters.RequestedUsage.dwType = USAGE_MATCH_TYPE_AND; + parameters.RequestedUsage.Usage.cUsageIdentifier = 1; + LPSTR oid = (LPSTR)(mode == QSslSocket::SslClientMode ? szOID_PKIX_KP_SERVER_AUTH : szOID_PKIX_KP_CLIENT_AUTH); + parameters.RequestedUsage.Usage.rgpszUsageIdentifier = &oid; + +#ifdef QSSLSOCKET_DEBUG + QElapsedTimer stopwatch; + stopwatch.start(); +#endif + PCCERT_CHAIN_CONTEXT chain; + BOOL result = CertGetCertificateChain( + nullptr, //default engine + wincert, + nullptr, //current date/time + nullptr, //default store + ¶meters, + 0, //default dwFlags + nullptr, //reserved + &chain); +#ifdef QSSLSOCKET_DEBUG + qCDebug(lcSsl) << "QWindowsCaRootFetcher" << stopwatch.elapsed() << "ms to get chain"; +#endif + + QSslCertificate trustedRoot; + if (result) { +#ifdef QSSLSOCKET_DEBUG + qCDebug(lcSsl) << "QWindowsCaRootFetcher - examining windows chains"; + if (chain->TrustStatus.dwErrorStatus == CERT_TRUST_NO_ERROR) + qCDebug(lcSsl) << " - TRUSTED"; + else + qCDebug(lcSsl) << " - NOT TRUSTED" << chain->TrustStatus.dwErrorStatus; + if (chain->TrustStatus.dwInfoStatus & CERT_TRUST_IS_SELF_SIGNED) + qCDebug(lcSsl) << " - SELF SIGNED"; + qCDebug(lcSsl) << "QSslSocketBackendPrivate::fetchCaRootForCert - dumping simple chains"; + for (unsigned int i = 0; i < chain->cChain; i++) { + if (chain->rgpChain[i]->TrustStatus.dwErrorStatus == CERT_TRUST_NO_ERROR) + qCDebug(lcSsl) << " - TRUSTED SIMPLE CHAIN" << i; + else + qCDebug(lcSsl) << " - UNTRUSTED SIMPLE CHAIN" << i << "reason:" << chain->rgpChain[i]->TrustStatus.dwErrorStatus; + for (unsigned int j = 0; j < chain->rgpChain[i]->cElement; j++) { + QSslCertificate foundCert(QByteArray((const char *)chain->rgpChain[i]->rgpElement[j]->pCertContext->pbCertEncoded + , chain->rgpChain[i]->rgpElement[j]->pCertContext->cbCertEncoded), QSsl::Der); + qCDebug(lcSsl) << " - " << foundCert; + } + } + qCDebug(lcSsl) << " - and" << chain->cLowerQualityChainContext << "low quality chains"; //expect 0, we haven't asked for them +#endif + + //based on http://msdn.microsoft.com/en-us/library/windows/desktop/aa377182%28v=vs.85%29.aspx + //about the final chain rgpChain[cChain-1] which must begin with a trusted root to be valid + if (chain->TrustStatus.dwErrorStatus == CERT_TRUST_NO_ERROR + && chain->cChain > 0) { + const PCERT_SIMPLE_CHAIN finalChain = chain->rgpChain[chain->cChain - 1]; + // http://msdn.microsoft.com/en-us/library/windows/desktop/aa377544%28v=vs.85%29.aspx + // rgpElement[0] is the end certificate chain element. rgpElement[cElement-1] is the self-signed "root" certificate element. + if (finalChain->TrustStatus.dwErrorStatus == CERT_TRUST_NO_ERROR + && finalChain->cElement > 0) { + trustedRoot = QSslCertificate(QByteArray((const char *)finalChain->rgpElement[finalChain->cElement - 1]->pCertContext->pbCertEncoded + , finalChain->rgpElement[finalChain->cElement - 1]->pCertContext->cbCertEncoded), QSsl::Der); + } + } + CertFreeCertificateChain(chain); + } + CertFreeCertificateContext(wincert); + + emit finished(cert, trustedRoot); + deleteLater(); +} + +QT_END_NAMESPACE |