1 files changed, 313 insertions, 0 deletions
diff --git a/vmime-master/src/vmime/net/tls/gnutls/TLSSession_GnuTLS.cpp b/vmime-master/src/vmime/net/tls/gnutls/TLSSession_GnuTLS.cpp
new file mode 100644
index 0000000..8586537
--- /dev/null
+++ b/vmime-master/src/vmime/net/tls/gnutls/TLSSession_GnuTLS.cpp
@@ -0,0 +1,313 @@
+//
+// VMime library (http://www.vmime.org)
+// Copyright (C) 2002 Vincent Richard <vincent@vmime.org>
+//
+// 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 3 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.
+//
+// Linking this library statically or dynamically with other modules is making
+// a combined work based on this library.  Thus, the terms and conditions of
+// the GNU General Public License cover the whole combination.
+//
+
+#include "vmime/config.hpp"
+
+
+#if VMIME_HAVE_MESSAGING_FEATURES && VMIME_HAVE_TLS_SUPPORT && VMIME_TLS_SUPPORT_LIB_IS_GNUTLS
+
+
+#include <gnutls/gnutls.h>
+#if GNUTLS_VERSION_NUMBER < 0x030000
+#include <gnutls/extra.h>
+#endif
+
+
+// Dependency on gcrypt is not needed since GNU TLS version 2.12.
+// See here: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=638651
+#if GNUTLS_VERSION_NUMBER <= 0x020b00
+#	define VMIME_GNUTLS_NEEDS_GCRYPT  1
+#endif
+
+#if VMIME_HAVE_PTHREAD
+#	include <pthread.h>
+#	if VMIME_GNUTLS_NEEDS_GCRYPT
+#		include <gcrypt.h>
+#	endif
+#	include <errno.h>
+#endif // VMIME_HAVE_PTHREAD
+
+#include "vmime/net/tls/gnutls/TLSSession_GnuTLS.hpp"
+#include "vmime/net/tls/gnutls/TLSSocket_GnuTLS.hpp"
+#include "vmime/net/tls/gnutls/TLSProperties_GnuTLS.hpp"
+
+#include "vmime/exception.hpp"
+
+
+// Enable GnuTLS debugging by defining GNUTLS_DEBUG
+//#define GNUTLS_DEBUG 1
+
+
+#include <sstream>
+#include <iomanip>
+
+#if VMIME_DEBUG && GNUTLS_DEBUG
+	#include <iostream>
+#endif // VMIME_DEBUG && GNUTLS_DEBUG
+
+
+#if VMIME_HAVE_PTHREAD && VMIME_GNUTLS_NEEDS_GCRYPT && defined(GCRY_THREAD_OPTION_PTHREAD_IMPL)
+extern "C"
+{
+	GCRY_THREAD_OPTION_PTHREAD_IMPL;
+}
+#endif // VMIME_HAVE_PTHREAD && defined(GCRY_THREAD_OPTION_PTHREAD_IMPL
+
+
+namespace vmime {
+namespace net {
+namespace tls {
+
+
+#ifndef VMIME_BUILDING_DOC
+
+// Initialize GNU TLS library
+struct TLSGlobal {
+
+	TLSGlobal() {
+
+#if VMIME_HAVE_PTHREAD && defined(GCRY_THREAD_OPTION_PTHREAD_IMPL)
+	#if VMIME_GNUTLS_NEEDS_GCRYPT
+		gcry_control(GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread);
+	#endif // VMIME_GNUTLS_NEEDS_GCRYPT
+#endif // VMIME_HAVE_PTHREAD && defined(GCRY_THREAD_OPTION_PTHREAD_IMPL
+
+		gnutls_global_init();
+		//gnutls_global_init_extra();
+
+#if VMIME_DEBUG && GNUTLS_DEBUG
+		gnutls_global_set_log_function(TLSLogFunc);
+		gnutls_global_set_log_level(10);
+#endif // VMIME_DEBUG && GNUTLS_DEBUG
+
+		gnutls_anon_allocate_client_credentials(&anonCred);
+		gnutls_certificate_allocate_credentials(&certCred);
+	}
+
+	~TLSGlobal() {
+
+		gnutls_anon_free_client_credentials(anonCred);
+		gnutls_certificate_free_credentials(certCred);
+
+		gnutls_global_deinit();
+	}
+
+#if VMIME_DEBUG && GNUTLS_DEBUG
+
+	static void TLSLogFunc(int level, const char *str) {
+
+		std::cerr << "GNUTLS: [" << level << "] " << str << std::endl;
+	}
+
+#endif // VMIME_DEBUG && GNUTLS_DEBUG
+
+
+	gnutls_anon_client_credentials_t anonCred;
+	gnutls_certificate_credentials_t certCred;
+};
+
+static TLSGlobal g_gnutlsGlobal;
+
+
+#endif // VMIME_BUILDING_DOC
+
+
+
+// static
+shared_ptr <TLSSession> TLSSession::create(
+	const shared_ptr <security::cert::certificateVerifier>& cv,
+	const shared_ptr <TLSProperties>& props
+) {
+
+	return make_shared <TLSSession_GnuTLS>(cv, props);
+}
+
+
+TLSSession_GnuTLS::TLSSession_GnuTLS(
+	const shared_ptr <security::cert::certificateVerifier>& cv,
+	const shared_ptr <TLSProperties>& props
+)
+	: m_certVerifier(cv),
+	  m_props(props) {
+
+	int res;
+
+	m_gnutlsSession = new gnutls_session_t;
+
+	if (gnutls_init(m_gnutlsSession, GNUTLS_CLIENT) != 0) {
+		throw std::bad_alloc();
+	}
+
+	// Sets some default priority on the ciphers, key exchange methods,
+	// macs and compression methods.
+#ifdef VMIME_HAVE_GNUTLS_PRIORITY_FUNCS
+	gnutls_dh_set_prime_bits(*m_gnutlsSession, 128);
+
+	if ((res = gnutls_priority_set_direct
+		(*m_gnutlsSession, m_props->getCipherSuite().c_str(), NULL)) != 0) {
+
+		throwTLSException("gnutls_priority_set_direct", res);
+	}
+
+#else  // !VMIME_HAVE_GNUTLS_PRIORITY_FUNCS
+
+	gnutls_set_default_priority(*m_gnutlsSession);
+
+	// Sets the priority on the certificate types supported by gnutls.
+	// Priority is higher for types specified before others. After
+	// specifying the types you want, you must append a 0.
+	const int certTypePriority[] = { GNUTLS_CRT_X509, 0 };
+
+	res = gnutls_certificate_type_set_priority(*m_gnutlsSession, certTypePriority);
+
+	if (res < 0) {
+		throwTLSException("gnutls_certificate_type_set_priority", res);
+	}
+
+	// Sets the priority on the protocol types
+	const int protoPriority[] = { GNUTLS_TLS1, GNUTLS_SSL3, 0 };
+
+	res = gnutls_protocol_set_priority(*m_gnutlsSession, protoPriority);
+
+	if (res < 0) {
+		throwTLSException("gnutls_certificate_type_set_priority", res);
+	}
+
+	// Priority on the ciphers
+	const int cipherPriority[] = {
+		GNUTLS_CIPHER_ARCFOUR_128,
+		GNUTLS_CIPHER_3DES_CBC,
+		GNUTLS_CIPHER_AES_128_CBC,
+		GNUTLS_CIPHER_AES_256_CBC,
+		GNUTLS_CIPHER_ARCFOUR_40,
+		GNUTLS_CIPHER_RC2_40_CBC,
+		GNUTLS_CIPHER_DES_CBC,
+		0
+	};
+
+	gnutls_cipher_set_priority(*m_gnutlsSession, cipherPriority);
+
+	// Priority on MACs
+	const int macPriority[] = {
+		GNUTLS_MAC_SHA,
+		GNUTLS_MAC_MD5,
+		0
+	};
+
+	gnutls_mac_set_priority(*m_gnutlsSession, macPriority);
+
+	// Priority on key exchange methods
+	const int kxPriority[] = {
+		GNUTLS_KX_RSA,
+		GNUTLS_KX_DHE_DSS,
+		GNUTLS_KX_DHE_RSA,
+		GNUTLS_KX_ANON_DH,
+		GNUTLS_KX_SRP,
+		GNUTLS_KX_RSA_EXPORT,
+		GNUTLS_KX_SRP_RSA,
+		GNUTLS_KX_SRP_DSS,
+		0
+	};
+
+	gnutls_kx_set_priority(*m_gnutlsSession, kxPriority);
+
+	// Priority on compression methods
+	const int compressionPriority[] = {
+		GNUTLS_COMP_ZLIB,
+		//GNUTLS_COMP_LZO,
+		GNUTLS_COMP_NULL,
+		0
+	};
+
+	gnutls_compression_set_priority(*m_gnutlsSession, compressionPriority);
+
+#endif // !VMIME_HAVE_GNUTLS_PRIORITY_FUNCS
+
+	// Initialize credentials
+	gnutls_credentials_set(
+		*m_gnutlsSession, GNUTLS_CRD_ANON, g_gnutlsGlobal.anonCred
+	);
+
+	gnutls_credentials_set(
+		*m_gnutlsSession, GNUTLS_CRD_CERTIFICATE, g_gnutlsGlobal.certCred
+	);
+}
+
+
+TLSSession_GnuTLS::TLSSession_GnuTLS(const TLSSession_GnuTLS&)
+	: TLSSession() {
+
+	// Not used
+}
+
+
+TLSSession_GnuTLS::~TLSSession_GnuTLS() {
+
+	try {
+
+		if (m_gnutlsSession) {
+
+			gnutls_deinit(*m_gnutlsSession);
+
+			delete m_gnutlsSession;
+			m_gnutlsSession = NULL;
+		}
+
+	} catch (...) {
+
+		// Don't throw in destructor
+	}
+}
+
+
+shared_ptr <TLSSocket> TLSSession_GnuTLS::getSocket(const shared_ptr <socket>& sok) {
+
+	return TLSSocket::wrap(dynamicCast <TLSSession>(shared_from_this()), sok);
+}
+
+
+shared_ptr <security::cert::certificateVerifier> TLSSession_GnuTLS::getCertificateVerifier() {
+
+	return m_certVerifier;
+}
+
+
+void TLSSession_GnuTLS::throwTLSException(const string& fname, const int code) {
+
+	std::ostringstream msg;
+
+	msg << fname + "() returned code ";
+	msg << std::hex << code;
+	msg << ": ";
+	msg << gnutls_strerror(code);
+
+	throw exceptions::tls_exception(msg.str());
+}
+
+
+} // tls
+} // net
+} // vmime
+
+
+#endif // VMIME_HAVE_MESSAGING_FEATURES && VMIME_HAVE_TLS_SUPPORT && VMIME_TLS_SUPPORT_LIB_IS_GNUTLS