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/*
* Copyright (c) 2010-2018 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
#pragma once
#include <memory>
#include <boost/noncopyable.hpp>
#include <boost/signals2.hpp>
#include <openssl/ssl.h>
#include <Swiften/Base/ByteArray.h>
#include <Swiften/TLS/CertificateWithKey.h>
#include <Swiften/TLS/TLSContext.h>
#include <Swiften/TLS/TLSOptions.h>
namespace std {
template<>
class default_delete<SSL_CTX> {
public:
void operator()(SSL_CTX *ptr) {
SSL_CTX_free(ptr);
}
};
template<>
class default_delete<SSL> {
public:
void operator()(SSL *ptr) {
SSL_free(ptr);
}
};
}
namespace Swift {
class OpenSSLContext : public TLSContext, boost::noncopyable {
public:
OpenSSLContext(const TLSOptions& options, Mode mode);
virtual ~OpenSSLContext() override final;
void accept() override final;
void connect() override final;
void connect(const std::string& requestHostname) override final;
bool setCertificateChain(const std::vector<std::shared_ptr<Certificate>>& certificateChain) override final;
bool setPrivateKey(const PrivateKey::ref& privateKey) override final;
bool setClientCertificate(CertificateWithKey::ref cert) override final;
void setAbortTLSHandshake(bool abort) override final;
bool setDiffieHellmanParameters(const ByteArray& parametersInOpenSslDer) override final;
void handleDataFromNetwork(const SafeByteArray&) override final;
void handleDataFromApplication(const SafeByteArray&) override final;
std::vector<Certificate::ref> getPeerCertificateChain() const override final;
std::shared_ptr<CertificateVerificationError> getPeerCertificateVerificationError() const override final;
virtual ByteArray getFinishMessage() const override final;
virtual ByteArray getPeerFinishMessage() const override final;
void setX509StoreContext(X509_STORE_CTX *ptr) { x509_store_ctx = ptr; }
std::function<int (const TLSContext *)> getVerifyCertCallback() { return verifyCertCallback; }
private:
bool configure(const TLSOptions& options);
static void ensureLibraryInitialized();
static int handleServerNameCallback(SSL *ssl, int *ad, void *arg);
static CertificateVerificationError::Type getVerificationErrorTypeForResult(int);
void initAndSetBIOs();
void doAccept();
void doConnect();
void sendPendingDataToNetwork();
void sendPendingDataToApplication();
private:
enum class State { Start, Accepting, Connecting, Connected, Error };
const Mode mode_;
State state_;
std::unique_ptr<SSL_CTX> context_;
std::unique_ptr<SSL> handle_;
BIO* readBIO_ = nullptr;
BIO* writeBIO_ = nullptr;
bool abortTLSHandshake_ = false;
X509_STORE_CTX *x509_store_ctx = nullptr;
std::function<int (const TLSContext *)> verifyCertCallback = nullptr;
};
}
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