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/********************************************************************\
* BitlBee -- An IRC to other IM-networks gateway *
* *
* Copyright 2002-2004 Wilmer van der Gaast and others *
\********************************************************************/
/* SSL module */
/*
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 with
the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL;
if not, write to the Free Software Foundation, Inc., 59 Temple Place,
Suite 330, Boston, MA 02111-1307 USA
*/
/* ssl_client makes it easier to open SSL connections to servers. (It
doesn't offer SSL server functionality yet, but it could be useful
to add it later.) Different ssl_client modules are available, and
ssl_client tries to make them all behave the same. It's very simple
and basic, it just imitates the proxy_connect() function from the
Gaim libs and passes the socket to the program once the handshake
is completed. */
#include <glib.h>
#include "proxy.h"
/* Some generic error codes. Especially SSL_AGAIN is important if you
want to do asynchronous I/O. */
#define SSL_OK 0
#define SSL_NOHANDSHAKE 1
#define SSL_AGAIN 2
extern int ssl_errno;
/* This is what your callback function should look like. */
typedef gboolean (*ssl_input_function)(gpointer, void*, b_input_condition);
/* Connect to host:port, call the given function when the connection is
ready to be used for SSL traffic. This is all done asynchronously, no
blocking I/O! (Except for the DNS lookups, for now...) */
G_MODULE_EXPORT void *ssl_connect( char *host, int port, ssl_input_function func, gpointer data );
/* Start an SSL session on an existing fd. Useful for STARTTLS functionality,
for example in Jabber. */
G_MODULE_EXPORT void *ssl_starttls( int fd, ssl_input_function func, gpointer data );
/* Obviously you need special read/write functions to read data. */
G_MODULE_EXPORT int ssl_read( void *conn, char *buf, int len );
G_MODULE_EXPORT int ssl_write( void *conn, const char *buf, int len );
/* See ssl_openssl.c for an explanation. */
G_MODULE_EXPORT int ssl_pending( void *conn );
/* Abort the SSL connection and disconnect the socket. Do not use close()
directly, both the SSL library and the peer will be unhappy! */
G_MODULE_EXPORT void ssl_disconnect( void *conn_ );
/* Get the fd for this connection, you will usually need it for event
handling. */
G_MODULE_EXPORT int ssl_getfd( void *conn );
/* This function returns GAIM_INPUT_READ/WRITE. With SSL connections it's
possible that something has to be read while actually were trying to
write something (think about key exchange/refresh/etc). So when an
SSL operation returned SSL_AGAIN, *always* use this function when
adding an event handler to the queue. (And it should perform exactly
the same action as the handler that just received the SSL_AGAIN.) */
G_MODULE_EXPORT b_input_condition ssl_getdirection( void *conn );
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