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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2013 Nils Maier
*
* 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 APPLE_TLS_SESSION_H
#define APPLE_TLS_SESSION_H
#include "common.h"
#include "TLSSession.h"
#include "AppleTLSContext.h"
namespace aria2 {
class AppleTLSSession : public TLSSession {
enum state_t {
st_constructed,
st_initialized,
st_connected,
st_closed,
st_error
};
public:
AppleTLSSession(AppleTLSContext* ctx);
// MUST deallocate all resources
virtual ~AppleTLSSession();
// Initializes SSL/TLS session. The |sockfd| is the underlying
// tranport socket. This function returns TLS_ERR_OK if it
// succeeds, or TLS_ERR_ERROR.
virtual int init(sock_t sockfd);
// Sets |hostname| for TLS SNI extension. This is only meaningful for
// client side session. This function returns TLS_ERR_OK if it
// succeeds, or TLS_ERR_ERROR.
virtual int setSNIHostname(const std::string& hostname);
// Closes the SSL/TLS session. Don't close underlying transport
// socket. This function returns TLS_ERR_OK if it succeeds, or
// TLS_ERR_ERROR.
virtual int closeConnection();
// Returns TLS_WANT_READ if SSL/TLS session needs more data from
// remote endpoint to proceed, or TLS_WANT_WRITE if SSL/TLS session
// needs to write more data to proceed. If SSL/TLS session needs
// neither read nor write data at the moment, return value is
// undefined.
virtual int checkDirection();
// Sends |data| with length |len|. This function returns the number
// of bytes sent if it succeeds, or TLS_ERR_WOULDBLOCK if the
// underlying tranport blocks, or TLS_ERR_ERROR.
virtual ssize_t writeData(const void* data, size_t len);
// Receives data into |data| with length |len|. This function returns
// the number of bytes received if it succeeds, or TLS_ERR_WOULDBLOCK
// if the underlying tranport blocks, or TLS_ERR_ERROR.
virtual ssize_t readData(void* data, size_t len);
// Performs client side handshake. The |hostname| is the hostname of
// the remote endpoint and is used to verify its certificate. This
// function returns TLS_ERR_OK if it succeeds, or TLS_ERR_WOULDBLOCK
// if the underlying transport blocks, or TLS_ERR_ERROR.
// When returning TLS_ERR_ERROR, provide certificate validation error
// in |handshakeErr|.
virtual int tlsConnect(const std::string& hostname, std::string& handshakeErr);
// Performs server side handshake. This function returns TLS_ERR_OK
// if it succeeds, or TLS_ERR_WOULDBLOCK if the underlying transport
// blocks, or TLS_ERR_ERROR.
virtual int tlsAccept();
// Returns last error string
virtual std::string getLastErrorString();
private:
static OSStatus SocketWrite(SSLConnectionRef conn, const void* data, size_t* len) {
return ((AppleTLSSession*)conn)->sockWrite(data, len);
}
static OSStatus SocketRead(SSLConnectionRef conn, void* data, size_t* len) {
return ((AppleTLSSession*)conn)->sockRead(data, len);
}
AppleTLSContext *ctx_;
SSLContextRef sslCtx_;
sock_t sockfd_;
state_t state_;
OSStatus lastError_;
size_t writeBuffered_;
OSStatus sockWrite(const void* data, size_t* len);
OSStatus sockRead(void* data, size_t* len);
};
}
#endif // TLS_SESSION_H
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