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/*
* Copyright (c) 2014, Ford Motor Company
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following
* disclaimer in the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of the Ford Motor Company nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SRC_COMPONENTS_SECURITY_MANAGER_INCLUDE_SECURITY_MANAGER_CRYPTO_MANAGER_IMPL_H_
#define SRC_COMPONENTS_SECURITY_MANAGER_INCLUDE_SECURITY_MANAGER_CRYPTO_MANAGER_IMPL_H_
#include <stdint.h>
#include <openssl/bio.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <string>
#include <map>
#include "security_manager/crypto_manager.h"
#include "security_manager/ssl_context.h"
#include "security_manager/security_manager_settings.h"
#include "utils/macro.h"
#include "utils/lock.h"
#include "utils/shared_ptr.h"
namespace security_manager {
class CryptoManagerImpl : public CryptoManager {
private:
class SSLContextImpl : public SSLContext {
public:
SSLContextImpl(SSL* conn, Mode mode, size_t maximum_payload_size);
~SSLContextImpl();
virtual HandshakeResult StartHandshake(const uint8_t** const out_data,
size_t* out_data_size);
virtual HandshakeResult DoHandshakeStep(const uint8_t* const in_data,
size_t in_data_size,
const uint8_t** const out_data,
size_t* out_data_size) OVERRIDE;
bool Encrypt(const uint8_t* const in_data,
size_t in_data_size,
const uint8_t** const out_data,
size_t* out_data_size) OVERRIDE;
bool Decrypt(const uint8_t* const in_data,
size_t in_data_size,
const uint8_t** const out_data,
size_t* out_data_size) OVERRIDE;
bool IsInitCompleted() const OVERRIDE;
bool IsHandshakePending() const OVERRIDE;
bool GetCertificateDueDate(time_t& due_date) const OVERRIDE;
bool HasCertificate() const OVERRIDE;
size_t get_max_block_size(size_t mtu) const OVERRIDE;
std::string LastError() const OVERRIDE;
void ResetConnection() OVERRIDE;
void SetHandshakeContext(const HandshakeContext& hsh_ctx) OVERRIDE;
void PrintCertData(X509* cert, const std::string& cert_owner);
private:
void PrintCertInfo();
/**
* @brief Removes disallowed for printing certificate information from input
* data
* @param in_data input data with certificate information
* @return filtered string with allowed for printing information
*/
const std::string RemoveDisallowedInfo(X509_NAME* in_data) const;
HandshakeResult CheckCertContext();
bool ReadHandshakeData(const uint8_t** const out_data,
size_t* out_data_size);
bool WriteHandshakeData(const uint8_t* const in_data, size_t in_data_size);
HandshakeResult PerformHandshake();
typedef size_t (*BlockSizeGetter)(size_t);
void EnsureBufferSizeEnough(size_t size);
void SetHandshakeError(const int error);
HandshakeResult openssl_error_convert_to_internal(const long error);
std::string GetTextBy(X509_NAME* name, int object) const;
/**
* @brief Pulls number stored in buffer of chars
* and returns it as integer
* @param buf where symbols stored
* @param idx index of required char to be converted
* @return number in integer representation
*/
int get_number_from_char_buf(char* buf, int* idx) const;
/**
* @brief Converts time from ASN1 format (used in OpenSSL)
* to time_t data type
* @param time_to_convert time to be converted
* @return time in time_t format
*/
time_t convert_asn1_time_to_time_t(ASN1_TIME* time_to_convert) const;
SSL* connection_;
BIO* bioIn_;
BIO* bioOut_;
BIO* bioFilter_;
mutable sync_primitives::Lock bio_locker;
size_t buffer_size_;
uint8_t* buffer_;
bool is_handshake_pending_;
Mode mode_;
mutable std::string last_error_;
BlockSizeGetter max_block_size_;
static std::map<std::string, BlockSizeGetter> max_block_sizes;
static std::map<std::string, BlockSizeGetter> create_max_block_sizes();
HandshakeContext hsh_context_;
DISALLOW_COPY_AND_ASSIGN(SSLContextImpl);
};
public:
explicit CryptoManagerImpl(
const utils::SharedPtr<const CryptoManagerSettings> set);
~CryptoManagerImpl();
bool Init() OVERRIDE;
bool OnCertificateUpdated(const std::string& data) OVERRIDE;
SSLContext* CreateSSLContext() OVERRIDE;
void ReleaseSSLContext(SSLContext* context) OVERRIDE;
std::string LastError() const OVERRIDE;
bool IsCertificateUpdateRequired(
const time_t system_time, const time_t certificates_time) const OVERRIDE;
virtual const CryptoManagerSettings& get_settings() const OVERRIDE;
private:
bool AreForceProtectionSettingsCorrect() const;
bool set_certificate(const std::string& cert_data);
const utils::SharedPtr<const CryptoManagerSettings> settings_;
SSL_CTX* context_;
static uint32_t instance_count_;
static sync_primitives::Lock instance_lock_;
DISALLOW_COPY_AND_ASSIGN(CryptoManagerImpl);
};
} // namespace security_manager
#endif // SRC_COMPONENTS_SECURITY_MANAGER_INCLUDE_SECURITY_MANAGER_CRYPTO_MANAGER_IMPL_H_
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