Abstract TLS session implementation

Now TLS session object is abstracted as TLSSession class. Currently,
we have GNUTLS and OpenSSL implementations.

1 files changed, 74 insertions, 0 deletions

diff --git a/src/LibsslTLSSession.h b/src/LibsslTLSSession.h
new file mode 100644
index 00000000..6a162031
--- /dev/null
+++ b/src/LibsslTLSSession.h
@@ -0,0 +1,74 @@
+/* <!-- copyright */
+/*
+ * aria2 - The high speed download utility
+ *
+ * Copyright (C) 2013 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 --> */
+#ifndef LIBSSL_TLS_SESSION_H
+#define LIBSSL_TLS_SESSION_H
+
+#include "common.h"
+
+#include <openssl/ssl.h>
+
+#include <string>
+
+#include "TLSSessionConst.h"
+#include "a2netcompat.h"
+
+namespace aria2 {
+
+class TLSContext;
+
+class TLSSession {
+public:
+  TLSSession(TLSContext* tlsContext);
+  ~TLSSession();
+  int init(sock_t sockfd);
+  int setSNIHostname(const std::string& hostname);
+  int closeConnection();
+  int checkDirection();
+  ssize_t writeData(const void* data, size_t len);
+  ssize_t readData(void* data, size_t len);
+  int tlsConnect(const std::string& hostname, std::string& handshakeErr);
+  int tlsAccept();
+  std::string getLastErrorString();
+private:
+  int handshake();
+  SSL* ssl_;
+  TLSContext* tlsContext_;
+  // Last error code from openSSL library functions
+  int rv_;
+};
+
+} // namespace aria2
+
+#endif // LIBSSL_TLS_SESSION_H