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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#include "LibsslTLSContext.h"
#include <openssl/err.h>
#include "LogFactory.h"
#include "Logger.h"
#include "fmt.h"
#include "message.h"
namespace aria2 {
TLSContext::TLSContext(TLSSessionSide side)
: sslCtx_(0),
side_(side),
peerVerificationEnabled_(false)
{
sslCtx_ = SSL_CTX_new(SSLv23_method());
if(sslCtx_) {
good_ = true;
} else {
good_ = false;
A2_LOG_ERROR(fmt("SSL_CTX_new() failed. Cause: %s",
ERR_error_string(ERR_get_error(), 0)));
}
// Disable SSLv2 and enable all workarounds for buggy servers
SSL_CTX_set_options(sslCtx_, SSL_OP_ALL | SSL_OP_NO_SSLv2
#ifdef SSL_OP_NO_COMPRESSION
| SSL_OP_NO_COMPRESSION
#endif // SSL_OP_NO_COMPRESSION
);
SSL_CTX_set_mode(sslCtx_, SSL_MODE_AUTO_RETRY);
SSL_CTX_set_mode(sslCtx_, SSL_MODE_ENABLE_PARTIAL_WRITE);
#ifdef SSL_MODE_RELEASE_BUFFERS
/* keep memory usage low */
SSL_CTX_set_mode(sslCtx_, SSL_MODE_RELEASE_BUFFERS);
#endif
}
TLSContext::~TLSContext()
{
SSL_CTX_free(sslCtx_);
}
bool TLSContext::good() const
{
return good_;
}
bool TLSContext::bad() const
{
return !good_;
}
bool TLSContext::addCredentialFile(const std::string& certfile,
const std::string& keyfile)
{
if(SSL_CTX_use_PrivateKey_file(sslCtx_, keyfile.c_str(),
SSL_FILETYPE_PEM) != 1) {
A2_LOG_ERROR(fmt("Failed to load private key from %s. Cause: %s",
keyfile.c_str(),
ERR_error_string(ERR_get_error(), 0)));
return false;
}
if(SSL_CTX_use_certificate_chain_file(sslCtx_, certfile.c_str()) != 1) {
A2_LOG_ERROR(fmt("Failed to load certificate from %s. Cause: %s",
certfile.c_str(),
ERR_error_string(ERR_get_error(), 0)));
return false;
}
A2_LOG_INFO(fmt("Credential files(cert=%s, key=%s) were successfully added.",
certfile.c_str(),
keyfile.c_str()));
return true;
}
bool TLSContext::addSystemTrustedCACerts()
{
if(SSL_CTX_set_default_verify_paths(sslCtx_) != 1) {
A2_LOG_ERROR(fmt(MSG_LOADING_SYSTEM_TRUSTED_CA_CERTS_FAILED,
ERR_error_string(ERR_get_error(), 0)));
return false;
} else {
A2_LOG_INFO("System trusted CA certificates were successfully added.");
return true;
}
}
bool TLSContext::addTrustedCACertFile(const std::string& certfile)
{
if(SSL_CTX_load_verify_locations(sslCtx_, certfile.c_str(), 0) != 1) {
A2_LOG_ERROR(fmt(MSG_LOADING_TRUSTED_CA_CERT_FAILED,
certfile.c_str(),
ERR_error_string(ERR_get_error(), 0)));
return false;
} else {
A2_LOG_INFO("Trusted CA certificates were successfully added.");
return true;
}
}
void TLSContext::enablePeerVerification()
{
peerVerificationEnabled_ = true;
}
void TLSContext::disablePeerVerification()
{
peerVerificationEnabled_ = false;
}
} // namespace aria2
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