diff options
Diffstat (limited to 'src/network/ssl/qsslcontext_openssl11.cpp')
| -rw-r--r-- | src/network/ssl/qsslcontext_openssl11.cpp | 277 |
1 files changed, 277 insertions, 0 deletions
diff --git a/src/network/ssl/qsslcontext_openssl11.cpp b/src/network/ssl/qsslcontext_openssl11.cpp new file mode 100644 index 0000000000..787b6ae3f5 --- /dev/null +++ b/src/network/ssl/qsslcontext_openssl11.cpp @@ -0,0 +1,277 @@ +/**************************************************************************** +** +** Copyright (C) 2017 The Qt Company Ltd. +** Copyright (C) 2014 BlackBerry Limited. All rights reserved. +** Copyright (C) 2014 Governikus GmbH & Co. KG. +** Copyright (C) 2016 Richard J. Moore <rich@kde.org> +** 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 <QtNetwork/qsslsocket.h> +#include <QtNetwork/qssldiffiehellmanparameters.h> + +#include "private/qssl_p.h" +#include "private/qsslcontext_openssl_p.h" +#include "private/qsslsocket_p.h" +#include "private/qsslsocket_openssl_p.h" +#include "private/qsslsocket_openssl_symbols_p.h" +#include "private/qssldiffiehellmanparameters_p.h" + +#include <vector> + +QT_BEGIN_NAMESPACE + +// defined in qsslsocket_openssl.cpp: +extern int q_X509Callback(int ok, X509_STORE_CTX *ctx); +extern QString getErrorsFromOpenSsl(); + +static inline QString msgErrorSettingEllipticCurves(const QString &why) +{ + return QSslSocket::tr("Error when setting the elliptic curves (%1)").arg(why); +} + +// static +void QSslContext::initSslContext(QSslContext *sslContext, QSslSocket::SslMode mode, const QSslConfiguration &configuration, bool allowRootCertOnDemandLoading) +{ + sslContext->sslConfiguration = configuration; + sslContext->errorCode = QSslError::NoError; + + bool client = (mode == QSslSocket::SslClientMode); + + bool reinitialized = false; + bool unsupportedProtocol = false; +init_context: + if (sslContext->sslConfiguration.protocol() == QSsl::SslV2) { + // SSL 2 is no longer supported, but chosen deliberately -> error + sslContext->ctx = nullptr; + unsupportedProtocol = true; + } else { + // The ssl options will actually control the supported methods + sslContext->ctx = q_SSL_CTX_new(client ? q_TLS_client_method() : q_TLS_server_method()); + } + + if (!sslContext->ctx) { + // After stopping Flash 10 the SSL library loses its ciphers. Try re-adding them + // by re-initializing the library. + if (!reinitialized) { + reinitialized = true; + if (q_OPENSSL_init_ssl(0, nullptr) == 1) + goto init_context; + } + + sslContext->errorStr = QSslSocket::tr("Error creating SSL context (%1)").arg( + unsupportedProtocol ? QSslSocket::tr("unsupported protocol") : QSslSocketBackendPrivate::getErrorsFromOpenSsl() + ); + sslContext->errorCode = QSslError::UnspecifiedError; + return; + } + + // Enable bug workarounds. + long options = QSslSocketBackendPrivate::setupOpenSslOptions(configuration.protocol(), configuration.d->sslOptions); + q_SSL_CTX_set_options(sslContext->ctx, options); + + // Tell OpenSSL to release memory early + // http://www.openssl.org/docs/ssl/SSL_CTX_set_mode.html + q_SSL_CTX_set_mode(sslContext->ctx, SSL_MODE_RELEASE_BUFFERS); + + // Initialize ciphers + QByteArray cipherString; + bool first = true; + QList<QSslCipher> ciphers = sslContext->sslConfiguration.ciphers(); + if (ciphers.isEmpty()) + ciphers = QSslSocketPrivate::defaultCiphers(); + for (const QSslCipher &cipher : qAsConst(ciphers)) { + if (first) + first = false; + else + cipherString.append(':'); + cipherString.append(cipher.name().toLatin1()); + } + + if (!q_SSL_CTX_set_cipher_list(sslContext->ctx, cipherString.data())) { + sslContext->errorStr = QSslSocket::tr("Invalid or empty cipher list (%1)").arg(QSslSocketBackendPrivate::getErrorsFromOpenSsl()); + sslContext->errorCode = QSslError::UnspecifiedError; + return; + } + + const QDateTime now = QDateTime::currentDateTimeUtc(); + + // Add all our CAs to this store. + const auto caCertificates = sslContext->sslConfiguration.caCertificates(); + for (const QSslCertificate &caCertificate : caCertificates) { + // From https://www.openssl.org/docs/ssl/SSL_CTX_load_verify_locations.html: + // + // If several CA certificates matching the name, key identifier, and + // serial number condition are available, only the first one will be + // examined. This may lead to unexpected results if the same CA + // certificate is available with different expiration dates. If a + // ``certificate expired'' verification error occurs, no other + // certificate will be searched. Make sure to not have expired + // certificates mixed with valid ones. + // + // See also: QSslSocketBackendPrivate::verify() + if (caCertificate.expiryDate() >= now) { + q_X509_STORE_add_cert(q_SSL_CTX_get_cert_store(sslContext->ctx), (X509 *)caCertificate.handle()); + } + } + + if (QSslSocketPrivate::s_loadRootCertsOnDemand && allowRootCertOnDemandLoading) { + // tell OpenSSL the directories where to look up the root certs on demand + const QList<QByteArray> unixDirs = QSslSocketPrivate::unixRootCertDirectories(); + for (const QByteArray &unixDir : unixDirs) + q_SSL_CTX_load_verify_locations(sslContext->ctx, nullptr, unixDir.constData()); + } + + if (!sslContext->sslConfiguration.localCertificate().isNull()) { + // Require a private key as well. + if (sslContext->sslConfiguration.privateKey().isNull()) { + sslContext->errorStr = QSslSocket::tr("Cannot provide a certificate with no key, %1").arg(QSslSocketBackendPrivate::getErrorsFromOpenSsl()); + sslContext->errorCode = QSslError::UnspecifiedError; + return; + } + + // Load certificate + if (!q_SSL_CTX_use_certificate(sslContext->ctx, (X509 *)sslContext->sslConfiguration.localCertificate().handle())) { + sslContext->errorStr = QSslSocket::tr("Error loading local certificate, %1").arg(QSslSocketBackendPrivate::getErrorsFromOpenSsl()); + sslContext->errorCode = QSslError::UnspecifiedError; + return; + } + + if (configuration.d->privateKey.algorithm() == QSsl::Opaque) { + sslContext->pkey = reinterpret_cast<EVP_PKEY *>(configuration.d->privateKey.handle()); + } else { + // Load private key + sslContext->pkey = q_EVP_PKEY_new(); + // before we were using EVP_PKEY_assign_R* functions and did not use EVP_PKEY_free. + // this lead to a memory leak. Now we use the *_set1_* functions which do not + // take ownership of the RSA/DSA key instance because the QSslKey already has ownership. + if (configuration.d->privateKey.algorithm() == QSsl::Rsa) + q_EVP_PKEY_set1_RSA(sslContext->pkey, reinterpret_cast<RSA *>(configuration.d->privateKey.handle())); + else if (configuration.d->privateKey.algorithm() == QSsl::Dsa) + q_EVP_PKEY_set1_DSA(sslContext->pkey, reinterpret_cast<DSA *>(configuration.d->privateKey.handle())); +#ifndef OPENSSL_NO_EC + else if (configuration.d->privateKey.algorithm() == QSsl::Ec) + q_EVP_PKEY_set1_EC_KEY(sslContext->pkey, reinterpret_cast<EC_KEY *>(configuration.d->privateKey.handle())); +#endif + } + + if (!q_SSL_CTX_use_PrivateKey(sslContext->ctx, sslContext->pkey)) { + sslContext->errorStr = QSslSocket::tr("Error loading private key, %1").arg(QSslSocketBackendPrivate::getErrorsFromOpenSsl()); + sslContext->errorCode = QSslError::UnspecifiedError; + return; + } + if (configuration.d->privateKey.algorithm() == QSsl::Opaque) + sslContext->pkey = nullptr; // Don't free the private key, it belongs to QSslKey + + // Check if the certificate matches the private key. + if (!q_SSL_CTX_check_private_key(sslContext->ctx)) { + sslContext->errorStr = QSslSocket::tr("Private key does not certify public key, %1").arg(QSslSocketBackendPrivate::getErrorsFromOpenSsl()); + sslContext->errorCode = QSslError::UnspecifiedError; + return; + } + + // If we have any intermediate certificates then we need to add them to our chain + bool first = true; + for (const QSslCertificate &cert : qAsConst(configuration.d->localCertificateChain)) { + if (first) { + first = false; + continue; + } + q_SSL_CTX_ctrl(sslContext->ctx, SSL_CTRL_EXTRA_CHAIN_CERT, 0, + q_X509_dup(reinterpret_cast<X509 *>(cert.handle()))); + } + } + + // Initialize peer verification. + if (sslContext->sslConfiguration.peerVerifyMode() == QSslSocket::VerifyNone) { + q_SSL_CTX_set_verify(sslContext->ctx, SSL_VERIFY_NONE, nullptr); + } else { + q_SSL_CTX_set_verify(sslContext->ctx, SSL_VERIFY_PEER, q_X509Callback); + } + + // Set verification depth. + if (sslContext->sslConfiguration.peerVerifyDepth() != 0) + q_SSL_CTX_set_verify_depth(sslContext->ctx, sslContext->sslConfiguration.peerVerifyDepth()); + + // set persisted session if the user set it + if (!configuration.sessionTicket().isEmpty()) + sslContext->setSessionASN1(configuration.sessionTicket()); + + // Set temp DH params + QSslDiffieHellmanParameters dhparams = configuration.diffieHellmanParameters(); + + if (!dhparams.isValid()) { + sslContext->errorStr = QSslSocket::tr("Diffie-Hellman parameters are not valid"); + sslContext->errorCode = QSslError::UnspecifiedError; + return; + } + + if (!dhparams.isEmpty()) { + const QByteArray ¶ms = dhparams.d->derData; + const char *ptr = params.constData(); + DH *dh = q_d2i_DHparams(NULL, reinterpret_cast<const unsigned char **>(&ptr), params.length()); + if (dh == NULL) + qFatal("q_d2i_DHparams failed to convert QSslDiffieHellmanParameters to DER form"); + q_SSL_CTX_set_tmp_dh(sslContext->ctx, dh); + q_DH_free(dh); + } + +#ifndef OPENSSL_NO_PSK + if (!client) + q_SSL_CTX_use_psk_identity_hint(sslContext->ctx, sslContext->sslConfiguration.preSharedKeyIdentityHint().constData()); +#endif // !OPENSSL_NO_PSK + + const QVector<QSslEllipticCurve> qcurves = sslContext->sslConfiguration.ellipticCurves(); + if (!qcurves.isEmpty()) { +#ifdef OPENSSL_NO_EC + sslContext->errorStr = msgErrorSettingEllipticCurves(QSslSocket::tr("OpenSSL version with disabled elliptic curves")); + sslContext->errorCode = QSslError::UnspecifiedError; +#else + // Set the curves to be used. + std::vector<int> curves; + curves.reserve(qcurves.size()); + for (const auto &sslCurve : qcurves) + curves.push_back(sslCurve.id); + if (!q_SSL_CTX_ctrl(sslContext->ctx, SSL_CTRL_SET_CURVES, long(curves.size()), &curves[0])) { + sslContext->errorStr = msgErrorSettingEllipticCurves(QSslSocketBackendPrivate::getErrorsFromOpenSsl()); + sslContext->errorCode = QSslError::UnspecifiedError; + } +#endif + } +} + +QT_END_NAMESPACE |