/* * Copyright (c) 2012, The Tor Project, Inc. */
/* See LICENSE for licensing information */

/**
 * \file channeltls.h
 * \brief Header file for channeltls.c
 **/

#ifndef TOR_CHANNELTLS_H
#define TOR_CHANNELTLS_H

#include "or.h"
#include "channel.h"

#define BASE_CHAN_TO_TLS(c) (channel_tls_from_base((c)))
#define TLS_CHAN_TO_BASE(c) (channel_tls_to_base((c)))

#define TLS_CHAN_MAGIC 0x8a192427U

#ifdef TOR_CHANNEL_INTERNAL_

struct channel_tls_s {
  /* Base channel_t struct */
  channel_t base_;
  /* or_connection_t pointer */
  or_connection_t *conn;
};

#endif /* TOR_CHANNEL_INTERNAL_ */

channel_t * channel_tls_connect(const tor_addr_t *addr, uint16_t port,
                                const char *id_digest);
channel_listener_t * channel_tls_get_listener(void);
channel_listener_t * channel_tls_start_listener(void);
channel_t * channel_tls_handle_incoming(or_connection_t *orconn);

/* Casts */

channel_t * channel_tls_to_base(channel_tls_t *tlschan);
channel_tls_t * channel_tls_from_base(channel_t *chan);

/* Things for connection_or.c to call back into */
ssize_t channel_tls_flush_some_cells(channel_tls_t *chan, ssize_t num_cells);
int channel_tls_more_to_flush(channel_tls_t *chan);
void channel_tls_handle_cell(cell_t *cell, or_connection_t *conn);
void channel_tls_handle_state_change_on_orconn(channel_tls_t *chan,
                                               or_connection_t *conn,
                                               uint8_t old_state,
                                               uint8_t state);
void channel_tls_handle_var_cell(var_cell_t *var_cell,
                                 or_connection_t *conn);

/* Cleanup at shutdown */
void channel_tls_free_all(void);

#endif

