mirror of https://github.com/Icinga/icinga2.git
298 lines
7.1 KiB
C++
298 lines
7.1 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012 Icinga Development Team (http://www.icinga.org/) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software Foundation *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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******************************************************************************/
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#include "base/tlsstream.h"
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#include "base/stream_bio.h"
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#include "base/objectlock.h"
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#include "base/utility.h"
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#include "base/exception.h"
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#include <boost/bind.hpp>
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#include <boost/make_shared.hpp>
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using namespace icinga;
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int I2_EXPORT TlsStream::m_SSLIndex;
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bool I2_EXPORT TlsStream::m_SSLIndexInitialized = false;
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/**
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* Constructor for the TlsStream class.
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*
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* @param role The role of the client.
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* @param sslContext The SSL context for the client.
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*/
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TlsStream::TlsStream(const Stream::Ptr& innerStream, TlsRole role, shared_ptr<SSL_CTX> sslContext)
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: m_SSLContext(sslContext), m_SendQueue(boost::make_shared<FIFO>()), m_RecvQueue(boost::make_shared<FIFO>()),
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m_InnerStream(innerStream), m_Role(role)
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{
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m_InnerStream->OnDataAvailable.connect(boost::bind(&TlsStream::DataAvailableHandler, this));
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m_InnerStream->OnClosed.connect(boost::bind(&TlsStream::ClosedHandler, this));
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m_SendQueue->Start();
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m_RecvQueue->Start();
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}
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void TlsStream::Start(void)
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{
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{
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boost::mutex::scoped_lock lock(m_SSLMutex);
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m_SSL = shared_ptr<SSL>(SSL_new(m_SSLContext.get()), SSL_free);
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m_SSLContext.reset();
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if (!m_SSL) {
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BOOST_THROW_EXCEPTION(openssl_error()
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<< boost::errinfo_api_function("SSL_new")
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<< errinfo_openssl_error(ERR_get_error()));
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}
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if (!m_SSLIndexInitialized) {
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m_SSLIndex = SSL_get_ex_new_index(0, const_cast<char *>("TlsStream"), NULL, NULL, NULL);
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m_SSLIndexInitialized = true;
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}
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SSL_set_ex_data(m_SSL.get(), m_SSLIndex, this);
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SSL_set_verify(m_SSL.get(), SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, NULL);
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m_BIO = BIO_new_I2Stream(m_InnerStream);
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SSL_set_bio(m_SSL.get(), m_BIO, m_BIO);
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if (m_Role == TlsRoleServer)
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SSL_set_accept_state(m_SSL.get());
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else
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SSL_set_connect_state(m_SSL.get());
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}
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Stream::Start();
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HandleIO();
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}
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/**
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* Retrieves the X509 certficate for this client.
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*
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* @returns The X509 certificate.
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*/
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shared_ptr<X509> TlsStream::GetClientCertificate(void) const
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{
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boost::mutex::scoped_lock lock(m_SSLMutex);
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return shared_ptr<X509>(SSL_get_certificate(m_SSL.get()), &Utility::NullDeleter);
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}
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/**
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* Retrieves the X509 certficate for the peer.
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*
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* @returns The X509 certificate.
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*/
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shared_ptr<X509> TlsStream::GetPeerCertificate(void) const
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{
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boost::mutex::scoped_lock lock(m_SSLMutex);
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return shared_ptr<X509>(SSL_get_peer_certificate(m_SSL.get()), X509_free);
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}
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void TlsStream::DataAvailableHandler(void)
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{
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try {
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HandleIO();
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} catch (...) {
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SetException(boost::current_exception());
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Close();
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}
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}
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void TlsStream::ClosedHandler(void)
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{
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ObjectLock olock(this);
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SetException(m_InnerStream->GetException());
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Close();
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}
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/**
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* Processes data for the stream.
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*/
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void TlsStream::HandleIO(void)
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{
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ASSERT(!OwnsLock());
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char data[16 * 1024];
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int rc;
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if (!IsConnected()) {
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boost::mutex::scoped_lock lock(m_SSLMutex);
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rc = SSL_do_handshake(m_SSL.get());
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if (rc == 1) {
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lock.unlock();
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SetConnected(true);
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} else {
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switch (SSL_get_error(m_SSL.get(), rc)) {
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case SSL_ERROR_WANT_WRITE:
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/* fall through */
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case SSL_ERROR_WANT_READ:
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return;
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case SSL_ERROR_ZERO_RETURN:
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Close();
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return;
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default:
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I2Stream_check_exception(m_BIO);
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BOOST_THROW_EXCEPTION(openssl_error()
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<< boost::errinfo_api_function("SSL_do_handshake")
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<< errinfo_openssl_error(ERR_get_error()));
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}
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}
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}
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bool new_data = false, read_ok = true;
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while (read_ok) {
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boost::mutex::scoped_lock lock(m_SSLMutex);
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rc = SSL_read(m_SSL.get(), data, sizeof(data));
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if (rc > 0) {
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lock.unlock();
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ObjectLock olock(this);
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m_RecvQueue->Write(data, rc);
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new_data = true;
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} else {
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switch (SSL_get_error(m_SSL.get(), rc)) {
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case SSL_ERROR_WANT_WRITE:
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/* fall through */
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case SSL_ERROR_WANT_READ:
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read_ok = false;
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break;
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case SSL_ERROR_ZERO_RETURN:
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Close();
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return;
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default:
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I2Stream_check_exception(m_BIO);
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BOOST_THROW_EXCEPTION(openssl_error()
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<< boost::errinfo_api_function("SSL_read")
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<< errinfo_openssl_error(ERR_get_error()));
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}
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}
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}
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if (new_data)
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OnDataAvailable(GetSelf());
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ObjectLock olock(this);
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while (m_SendQueue->GetAvailableBytes() > 0) {
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size_t count = m_SendQueue->GetAvailableBytes();
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if (count == 0)
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break;
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if (count > sizeof(data))
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count = sizeof(data);
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m_SendQueue->Peek(data, count);
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olock.Unlock();
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boost::mutex::scoped_lock lock(m_SSLMutex);
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rc = SSL_write(m_SSL.get(), (const char *)data, count);
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if (rc > 0) {
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lock.unlock();
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olock.Lock();
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m_SendQueue->Read(NULL, rc);
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} else {
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switch (SSL_get_error(m_SSL.get(), rc)) {
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case SSL_ERROR_WANT_READ:
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/* fall through */
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case SSL_ERROR_WANT_WRITE:
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return;
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case SSL_ERROR_ZERO_RETURN:
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Close();
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return;
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default:
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I2Stream_check_exception(m_BIO);
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BOOST_THROW_EXCEPTION(openssl_error()
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<< boost::errinfo_api_function("SSL_write")
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<< errinfo_openssl_error(ERR_get_error()));
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}
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}
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}
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}
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/**
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* Closes the stream.
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*/
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void TlsStream::Close(void)
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{
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{
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boost::mutex::scoped_lock lock(m_SSLMutex);
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if (m_SSL)
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SSL_shutdown(m_SSL.get());
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}
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{
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ObjectLock olock(this);
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m_SendQueue->Close();
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m_RecvQueue->Close();
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}
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Stream::Close();
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}
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size_t TlsStream::GetAvailableBytes(void) const
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{
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ObjectLock olock(this);
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return m_RecvQueue->GetAvailableBytes();
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}
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size_t TlsStream::Peek(void *buffer, size_t count)
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{
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ObjectLock olock(this);
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return m_RecvQueue->Peek(buffer, count);
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}
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size_t TlsStream::Read(void *buffer, size_t count)
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{
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ObjectLock olock(this);
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return m_RecvQueue->Read(buffer, count);
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}
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void TlsStream::Write(const void *buffer, size_t count)
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{
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{
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ObjectLock olock(this);
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m_SendQueue->Write(buffer, count);
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}
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Utility::QueueAsyncCallback(boost::bind(&TlsStream::HandleIO, this));
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}
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