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/*
* Copyright (C) 2003-2023 Sébastien Helleu <flashcode@flashtux.org>
* Copyright (C) 2012 Simon Arlott
*
* This file is part of WeeChat, the extensible chat client.
*
* WeeChat 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.
*
* WeeChat 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 WeeChat. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef WEECHAT_HOOK_CONNECT_H
#define WEECHAT_HOOK_CONNECT_H
#include <gnutls/gnutls.h>
struct t_weechat_plugin;
struct t_infolist_item;
#define HOOK_CONNECT(hook, var) (((struct t_hook_connect *)hook->hook_data)->var)
/* used if socketpair() function is NOT available */
#define HOOK_CONNECT_MAX_SOCKETS 4
typedef int (t_hook_callback_connect)(const void *pointer, void *data,
int status, int gnutls_rc, int sock,
const char *error,
const char *ip_address);
typedef int (gnutls_callback_t)(const void *pointer, void *data,
gnutls_session_t tls_session,
const gnutls_datum_t *req_ca, int nreq,
const gnutls_pk_algorithm_t *pk_algos,
int pk_algos_len,
#if LIBGNUTLS_VERSION_NUMBER >= 0x020b00 /* 2.11.0 */
gnutls_retr2_st *answer,
#else
gnutls_retr_st *answer,
#endif /* LIBGNUTLS_VERSION_NUMBER >= 0x020b00 */
int action);
struct t_hook_connect
{
t_hook_callback_connect *callback; /* connect callback */
char *proxy; /* proxy (optional) */
char *address; /* peer address */
int port; /* peer port */
int ipv6; /* use IPv6 */
int sock; /* socket (set when connected) */
int retry; /* retry count */
gnutls_session_t *gnutls_sess; /* GnuTLS session (TLS connection) */
gnutls_callback_t *gnutls_cb; /* GnuTLS callback during handshake */
int gnutls_dhkey_size; /* Diffie Hellman Key Exchange size */
char *gnutls_priorities; /* GnuTLS priorities */
char *local_hostname; /* force local hostname (optional) */
int child_read; /* to read data in pipe from child */
int child_write; /* to write data in pipe for child */
int child_recv; /* to read data from child socket */
int child_send; /* to write data to child socket */
pid_t child_pid; /* pid of child process (connecting) */
struct t_hook *hook_child_timer; /* timer for child process timeout */
struct t_hook *hook_fd; /* pointer to fd hook */
struct t_hook *handshake_hook_fd; /* fd hook for handshake */
struct t_hook *handshake_hook_timer; /* timer for handshake timeout */
int handshake_fd_flags; /* socket flags saved for handshake */
char *handshake_ip_address; /* ip address (used for handshake) */
/* sockets used if socketpair() is NOT available */
int sock_v4[HOOK_CONNECT_MAX_SOCKETS]; /* IPv4 sockets for connecting */
int sock_v6[HOOK_CONNECT_MAX_SOCKETS]; /* IPv6 sockets for connecting */
};
extern char *hook_connect_get_description (struct t_hook *hook);
extern struct t_hook *hook_connect (struct t_weechat_plugin *plugin,
const char *proxy, const char *address,
int port, int ipv6, int retry,
void *gnutls_session, void *gnutls_cb,
int gnutls_dhkey_size,
const char *gnutls_priorities,
const char *local_hostname,
t_hook_callback_connect *callback,
const void *callback_pointer,
void *callback_data);
extern int hook_connect_gnutls_verify_certificates (gnutls_session_t tls_session);
extern int hook_connect_gnutls_set_certificates (gnutls_session_t tls_session,
const gnutls_datum_t *req_ca, int nreq,
const gnutls_pk_algorithm_t *pk_algos,
int pk_algos_len,
#if LIBGNUTLS_VERSION_NUMBER >= 0x020b00 /* 2.11.0 */
gnutls_retr2_st *answer);
#else
gnutls_retr_st *answer);
#endif /* LIBGNUTLS_VERSION_NUMBER >= 0x020b00 */
extern void hook_connect_free_data (struct t_hook *hook);
extern int hook_connect_add_to_infolist (struct t_infolist_item *item,
struct t_hook *hook);
extern void hook_connect_print_log (struct t_hook *hook);
#endif /* WEECHAT_HOOK_CONNECT_H */
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