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hexchat/src/common/server.c

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/* X-Chat
* Copyright (C) 1998 Peter Zelezny.
*
* 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 St, Fifth Floor, Boston, MA 02110-1301, USA
*
* MS Proxy (ISA server) support is (c) 2006 Pavel Fedin <sonic_amiga@rambler.ru>
* based on Dante source code
* Copyright (c) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
* Inferno Nettverk A/S, Norway. All rights reserved.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#define WANTSOCKET
#define WANTARPA
#include "inet.h"
#ifdef WIN32
#include <winbase.h>
#include <io.h>
#else
#include <signal.h>
#include <sys/wait.h>
#include <unistd.h>
#endif
#include "hexchat.h"
#include "fe.h"
#include "cfgfiles.h"
#include "network.h"
#include "notify.h"
#include "hexchatc.h"
#include "inbound.h"
#include "outbound.h"
#include "text.h"
#include "util.h"
#include "url.h"
#include "proto-irc.h"
#include "servlist.h"
#include "server.h"
#ifdef USE_OPENSSL
#include <openssl/ssl.h> /* SSL_() */
#include <openssl/err.h> /* ERR_() */
#include "ssl.h"
#endif
#ifdef USE_LIBPROXY
#include <proxy.h>
#endif
#define HEXCHAT_CONNECTION_ERROR g_quark_from_static_string("hexchat-connection-error")
#ifdef USE_OPENSSL
/* local variables */
static struct session *g_sess = NULL;
#endif
static GSList *away_list = NULL;
GSList *serv_list = NULL;
static void auto_reconnect (server *serv, int send_quit, int err);
static void server_disconnect (session * sess, int sendquit, int err);
static int server_cleanup (server * serv);
static void server_connect (server *serv, char *hostname, int port, int no_login);
#ifdef USE_LIBPROXY
extern pxProxyFactory *libproxy_factory;
#endif
enum
{
RESOLVE_FAILED = 1,
CONNECTION_FAILED,
BIND_FAILED,
PROXY_FAILED
};
/* actually send to the socket. This might do a character translation or
send via SSL. server/dcc both use this function. */
int
tcp_send_real (void *ssl, int sok, char *encoding, int using_irc, char *buf, int len)
{
int ret;
char *locale;
gsize loc_len;
if (encoding == NULL) /* system */
{
locale = NULL;
if (!prefs.utf8_locale)
{
const gchar *charset;
g_get_charset (&charset);
locale = g_convert_with_fallback (buf, len, charset, "UTF-8",
"?", 0, &loc_len, 0);
}
} else
{
if (using_irc) /* using "IRC" encoding (CP1252/UTF-8 hybrid) */
/* if all chars fit inside CP1252, use that. Otherwise this
returns NULL and we send UTF-8. */
locale = g_convert (buf, len, "CP1252", "UTF-8", 0, &loc_len, 0);
else
locale = g_convert_with_fallback (buf, len, encoding, "UTF-8",
"?", 0, &loc_len, 0);
}
if (locale)
{
len = loc_len;
#ifdef USE_OPENSSL
if (!ssl)
ret = send (sok, locale, len, 0);
else
ret = _SSL_send (ssl, locale, len);
#else
ret = send (sok, locale, len, 0);
#endif
g_free (locale);
} else
{
#ifdef USE_OPENSSL
if (!ssl)
ret = send (sok, buf, len, 0);
else
ret = _SSL_send (ssl, buf, len);
#else
ret = send (sok, buf, len, 0);
#endif
}
return ret;
}
static int
server_send_real (server *serv, char *buf, int len)
{
fe_add_rawlog (serv, buf, len, TRUE);
url_check_line (buf);
return tcp_send_real (serv->ssl, serv->sok, serv->encoding, serv->using_irc,
buf, len);
}
/* new throttling system, uses the same method as the Undernet
ircu2.10 server; under test, a 200-line paste didn't flood
off the client */
static int
tcp_send_queue (server *serv)
{
char *buf, *p;
int len, i, pri;
GSList *list;
time_t now = time (0);
/* did the server close since the timeout was added? */
if (!is_server (serv))
return 0;
/* try priority 2,1,0 */
pri = 2;
while (pri >= 0)
{
list = serv->outbound_queue;
while (list)
{
buf = (char *) list->data;
if (buf[0] == pri)
{
buf++; /* skip the priority byte */
len = strlen (buf);
if (serv->next_send < now)
serv->next_send = now;
if (serv->next_send - now >= 10)
{
/* check for clock skew */
if (now >= serv->prev_now)
return 1; /* don't remove the timeout handler */
/* it is skewed, reset to something sane */
serv->next_send = now;
}
for (p = buf, i = len; i && *p != ' '; p++, i--);
serv->next_send += (2 + i / 120);
serv->sendq_len -= len;
serv->prev_now = now;
fe_set_throttle (serv);
server_send_real (serv, buf, len);
buf--;
serv->outbound_queue = g_slist_remove (serv->outbound_queue, buf);
g_free (buf);
list = serv->outbound_queue;
} else
{
list = list->next;
}
}
/* now try pri 0 */
pri--;
}
return 0; /* remove the timeout handler */
}
int
tcp_send_len (server *serv, char *buf, int len)
{
char *dbuf;
int noqueue = !serv->outbound_queue;
if (!prefs.hex_net_throttle)
return server_send_real (serv, buf, len);
dbuf = g_malloc (len + 2); /* first byte is the priority */
dbuf[0] = 2; /* pri 2 for most things */
memcpy (dbuf + 1, buf, len);
dbuf[len + 1] = 0;
/* privmsg and notice get a lower priority */
if (g_ascii_strncasecmp (dbuf + 1, "PRIVMSG", 7) == 0 ||
g_ascii_strncasecmp (dbuf + 1, "NOTICE", 6) == 0)
{
dbuf[0] = 1;
}
else
{
/* WHO/MODE get the lowest priority */
if (g_ascii_strncasecmp (dbuf + 1, "WHO ", 4) == 0 ||
/* but only MODE queries, not changes */
(g_ascii_strncasecmp (dbuf + 1, "MODE", 4) == 0 &&
strchr (dbuf, '-') == NULL &&
strchr (dbuf, '+') == NULL))
dbuf[0] = 0;
}
serv->outbound_queue = g_slist_append (serv->outbound_queue, dbuf);
serv->sendq_len += len; /* tcp_send_queue uses strlen */
if (tcp_send_queue (serv) && noqueue)
fe_timeout_add (500, tcp_send_queue, serv);
return 1;
}
/*int
tcp_send (server *serv, char *buf)
{
return tcp_send_len (serv, buf, strlen (buf));
}*/
void
tcp_sendf (server *serv, const char *fmt, ...)
{
va_list args;
/* keep this buffer in BSS. Converting UTF-8 to ISO-8859-x might make the
string shorter, so allow alot more than 512 for now. */
static char send_buf[1540]; /* good code hey (no it's not overflowable) */
int len;
va_start (args, fmt);
len = g_vsnprintf (send_buf, sizeof (send_buf) - 1, fmt, args);
va_end (args);
send_buf[sizeof (send_buf) - 1] = '\0';
if (len < 0 || len > (sizeof (send_buf) - 1))
len = strlen (send_buf);
tcp_send_len (serv, send_buf, len);
}
static int
close_socket_cb (gpointer sok)
{
closesocket (GPOINTER_TO_INT (sok));
return 0;
}
static void
close_socket (int sok)
{
/* close the socket in 5 seconds so the QUIT message is not lost */
fe_timeout_add (5000, close_socket_cb, GINT_TO_POINTER (sok));
}
/* handle 1 line of text received from the server */
static void
server_inline (server *serv, char *line, gssize len)
{
char *utf_line_allocated = NULL;
/* Checks whether we're set to use UTF-8 charset */
if (serv->using_irc || /* 1. using CP1252/UTF-8 Hybrid */
(serv->encoding == NULL && prefs.utf8_locale) || /* OR 2. using system default->UTF-8 */
(serv->encoding != NULL && /* OR 3. explicitly set to UTF-8 */
(g_ascii_strcasecmp (serv->encoding, "UTF8") == 0 ||
g_ascii_strcasecmp (serv->encoding, "UTF-8") == 0)))
{
/* The user has the UTF-8 charset set, either via /charset
command or from his UTF-8 locale. Thus, we first try the
UTF-8 charset, and if we fail to convert, we assume
it to be ISO-8859-1 (see text_validate). */
utf_line_allocated = text_validate (&line, &len);
}
else
{
/* Since the user has an explicit charset set, either
via /charset command or from his non-UTF8 locale,
we don't fallback to ISO-8859-1 and instead try to remove
errnoeous octets till the string is convertable in the
said charset. */
const char *encoding = NULL;
if (serv->encoding != NULL)
encoding = serv->encoding;
else
g_get_charset (&encoding);
if (encoding != NULL)
{
char *conv_line; /* holds a copy of the original string */
gsize conv_len; /* tells g_convert how much of line to convert */
gsize utf_len;
gsize read_len;
GError *err;
gboolean retry;
conv_line = g_malloc (len + 1);
memcpy (conv_line, line, len);
conv_line[len] = 0;
conv_len = len;
/* if CP1255, convert it with the NUL terminator.
Works around SF bug #1122089 */
if (serv->using_cp1255)
conv_len++;
do
{
err = NULL;
retry = FALSE;
utf_line_allocated = g_convert_with_fallback (conv_line, conv_len, "UTF-8", encoding, "?", &read_len, &utf_len, &err);
if (err != NULL)
{
if (err->code == G_CONVERT_ERROR_ILLEGAL_SEQUENCE && conv_len > (read_len + 1))
{
/* Make our best bet by removing the erroneous char.
This will work for casual 8-bit strings with non-standard chars. */
memmove (conv_line + read_len, conv_line + read_len + 1, conv_len - read_len -1);
conv_len--;
retry = TRUE;
}
g_error_free (err);
}
} while (retry);
g_free (conv_line);
/* If any conversion has occured at all. Conversion might fail
due to errors other than invalid sequences, e.g. unknown charset. */
if (utf_line_allocated != NULL)
{
line = utf_line_allocated;
len = utf_len;
if (serv->using_cp1255 && len > 0)
len--;
}
else
{
/* If all fails, treat as UTF-8 with fallback to ISO-8859-1. */
utf_line_allocated = text_validate (&line, &len);
}
}
}
fe_add_rawlog (serv, line, len, FALSE);
/* let proto-irc.c handle it */
serv->p_inline (serv, line, len);
g_free (utf_line_allocated);
}
/* read data from socket */
static gboolean
server_read (GIOChannel *source, GIOCondition condition, server *serv)
{
int sok = serv->sok;
int error, i, len;
char lbuf[2050];
while (1)
{
#ifdef USE_OPENSSL
if (!serv->ssl)
#endif
len = recv (sok, lbuf, sizeof (lbuf) - 2, 0);
#ifdef USE_OPENSSL
else
len = _SSL_recv (serv->ssl, lbuf, sizeof (lbuf) - 2);
#endif
if (len < 1)
{
error = 0;
if (len < 0)
{
if (would_block ())
return TRUE;
error = sock_error ();
}
if (!serv->end_of_motd)
{
server_disconnect (serv->server_session, FALSE, error);
if (!servlist_cycle (serv))
{
if (prefs.hex_net_auto_reconnect)
auto_reconnect (serv, FALSE, error);
}
} else
{
if (prefs.hex_net_auto_reconnect)
auto_reconnect (serv, FALSE, error);
else
server_disconnect (serv->server_session, FALSE, error);
}
return TRUE;
}
i = 0;
lbuf[len] = 0;
while (i < len)
{
switch (lbuf[i])
{
case '\r':
break;
case '\n':
serv->linebuf[serv->pos] = 0;
server_inline (serv, serv->linebuf, serv->pos);
serv->pos = 0;
break;
default:
serv->linebuf[serv->pos] = lbuf[i];
if (serv->pos >= (sizeof (serv->linebuf) - 1))
fprintf (stderr,
"*** HEXCHAT WARNING: Buffer overflow - shit server!\n");
else
serv->pos++;
}
i++;
}
}
}
static void
server_connected (server * serv)
{
prefs.wait_on_exit = TRUE;
serv->ping_recv = time (0);
serv->lag_sent = 0;
serv->connected = TRUE;
set_nonblocking (serv->sok);
serv->iotag = fe_input_add (serv->sok, FIA_READ|FIA_EX, server_read, serv);
if (!serv->no_login)
{
EMIT_SIGNAL (XP_TE_CONNECTED, serv->server_session, NULL, NULL, NULL,
NULL, 0);
if (serv->network)
{
serv->p_login (serv,
(!(((ircnet *)serv->network)->flags & FLAG_USE_GLOBAL) &&
(((ircnet *)serv->network)->user)) ?
(((ircnet *)serv->network)->user) :
prefs.hex_irc_user_name,
(!(((ircnet *)serv->network)->flags & FLAG_USE_GLOBAL) &&
(((ircnet *)serv->network)->real)) ?
(((ircnet *)serv->network)->real) :
prefs.hex_irc_real_name);
} else
{
serv->p_login (serv, prefs.hex_irc_user_name, prefs.hex_irc_real_name);
}
} else
{
EMIT_SIGNAL (XP_TE_SERVERCONNECTED, serv->server_session, NULL, NULL,
NULL, NULL, 0);
}
server_set_name (serv, serv->servername);
fe_server_event (serv, FE_SE_CONNECT, 0);
}
#ifdef WIN32
static gboolean
server_close_pipe (int *pipefd) /* see comments below */
{
close (pipefd[0]); /* close WRITE end first to cause an EOF on READ */
close (pipefd[1]); /* in giowin32, and end that thread. */
g_free (pipefd);
return FALSE;
}
#endif
static void
server_stopconnecting (server * serv)
{
if (serv->iotag)
{
fe_input_remove (serv->iotag);
serv->iotag = 0;
}
if (serv->joindelay_tag)
{
fe_timeout_remove (serv->joindelay_tag);
serv->joindelay_tag = 0;
}
#ifdef USE_OPENSSL
if (serv->ssl_do_connect_tag)
{
fe_timeout_remove (serv->ssl_do_connect_tag);
serv->ssl_do_connect_tag = 0;
}
#endif
if (serv->cancellable)
{
g_object_unref (serv->cancellable);
serv->cancellable = NULL;
}
fe_progressbar_end (serv);
serv->connecting = FALSE;
fe_server_event (serv, FE_SE_DISCONNECT, 0);
}
#ifdef USE_OPENSSL
#define SSLTMOUT 90 /* seconds */
static void
ssl_cb_info (SSL * s, int where, int ret)
{
/* char buf[128];*/
return; /* FIXME: make debug level adjustable in serverlist or settings */
/* g_snprintf (buf, sizeof (buf), "%s (%d)", SSL_state_string_long (s), where);
if (g_sess)
EMIT_SIGNAL (XP_TE_SSLMESSAGE, g_sess, buf, NULL, NULL, NULL, 0);
else
fprintf (stderr, "%s\n", buf);*/
}
static int
ssl_cb_verify (int ok, X509_STORE_CTX * ctx)
{
char subject[256];
char issuer[256];
char buf[512];
X509_NAME_oneline (X509_get_subject_name (ctx->current_cert), subject,
sizeof (subject));
X509_NAME_oneline (X509_get_issuer_name (ctx->current_cert), issuer,
sizeof (issuer));
g_snprintf (buf, sizeof (buf), "* Subject: %s", subject);
EMIT_SIGNAL (XP_TE_SSLMESSAGE, g_sess, buf, NULL, NULL, NULL, 0);
g_snprintf (buf, sizeof (buf), "* Issuer: %s", issuer);
EMIT_SIGNAL (XP_TE_SSLMESSAGE, g_sess, buf, NULL, NULL, NULL, 0);
return (TRUE); /* always ok */
}
static int
ssl_do_connect (server * serv)
{
char buf[128];
g_sess = serv->server_session;
if (SSL_connect (serv->ssl) <= 0)
{
char err_buf[128];
int err;
g_sess = NULL;
if ((err = ERR_get_error ()) > 0)
{
ERR_error_string (err, err_buf);
g_snprintf (buf, sizeof (buf), "(%d) %s", err, err_buf);
EMIT_SIGNAL (XP_TE_CONNFAIL, serv->server_session, buf, NULL,
NULL, NULL, 0);
if (ERR_GET_REASON (err) == SSL_R_WRONG_VERSION_NUMBER)
PrintText (serv->server_session, _("Are you sure this is a SSL capable server and port?\n"));
server_cleanup (serv);
if (prefs.hex_net_auto_reconnectonfail)
auto_reconnect (serv, FALSE, -1);
return (0); /* remove it (0) */
}
}
g_sess = NULL;
if (SSL_is_init_finished (serv->ssl))
{
struct cert_info cert_info;
struct chiper_info *chiper_info;
int verify_error;
int i;
if (!_SSL_get_cert_info (&cert_info, serv->ssl))
{
g_snprintf (buf, sizeof (buf), "* Certification info:");
EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL,
NULL, 0);
g_snprintf (buf, sizeof (buf), " Subject:");
EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL,
NULL, 0);
for (i = 0; cert_info.subject_word[i]; i++)
{
g_snprintf (buf, sizeof (buf), " %s", cert_info.subject_word[i]);
EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL,
NULL, 0);
}
g_snprintf (buf, sizeof (buf), " Issuer:");
EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL,
NULL, 0);
for (i = 0; cert_info.issuer_word[i]; i++)
{
g_snprintf (buf, sizeof (buf), " %s", cert_info.issuer_word[i]);
EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL,
NULL, 0);
}
g_snprintf (buf, sizeof (buf), " Public key algorithm: %s (%d bits)",
cert_info.algorithm, cert_info.algorithm_bits);
EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL,
NULL, 0);
/*if (cert_info.rsa_tmp_bits)
{
g_snprintf (buf, sizeof (buf),
" Public key algorithm uses ephemeral key with %d bits",
cert_info.rsa_tmp_bits);
EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL,
NULL, 0);
}*/
g_snprintf (buf, sizeof (buf), " Sign algorithm %s",
cert_info.sign_algorithm/*, cert_info.sign_algorithm_bits*/);
EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL,
NULL, 0);
g_snprintf (buf, sizeof (buf), " Valid since %s to %s",
cert_info.notbefore, cert_info.notafter);
EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL,
NULL, 0);
} else
{
g_snprintf (buf, sizeof (buf), " * No Certificate");
EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL,
NULL, 0);
}
chiper_info = _SSL_get_cipher_info (serv->ssl); /* static buffer */
g_snprintf (buf, sizeof (buf), "* Cipher info:");
EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL, NULL,
0);
g_snprintf (buf, sizeof (buf), " Version: %s, cipher %s (%u bits)",
chiper_info->version, chiper_info->chiper,
chiper_info->chiper_bits);
EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL, NULL,
0);
verify_error = SSL_get_verify_result (serv->ssl);
switch (verify_error)
{
case X509_V_OK:
{
X509 *cert = SSL_get_peer_certificate (serv->ssl);
int hostname_err;
if ((hostname_err = _SSL_check_hostname(cert, serv->hostname)) != 0)
{
g_snprintf (buf, sizeof (buf), "* Verify E: Failed to validate hostname? (%d)%s",
hostname_err, serv->accept_invalid_cert ? " -- Ignored" : "");
if (serv->accept_invalid_cert)
EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL, NULL, 0);
else
goto conn_fail;
}
break;
}
/* g_snprintf (buf, sizeof (buf), "* Verify OK (?)"); */
/* EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL, NULL, 0); */
case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
case X509_V_ERR_CERT_HAS_EXPIRED:
if (serv->accept_invalid_cert)
{
g_snprintf (buf, sizeof (buf), "* Verify E: %s.? (%d) -- Ignored",
X509_verify_cert_error_string (verify_error),
verify_error);
EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL,
NULL, 0);
break;
}
default:
g_snprintf (buf, sizeof (buf), "%s.? (%d)",
X509_verify_cert_error_string (verify_error),
verify_error);
conn_fail:
EMIT_SIGNAL (XP_TE_CONNFAIL, serv->server_session, buf, NULL, NULL,
NULL, 0);
server_cleanup (serv);
return (0);
}
server_stopconnecting (serv);
/* activate gtk poll */
server_connected (serv);
return (0); /* remove it (0) */
} else
{
if (serv->ssl->session && serv->ssl->session->time + SSLTMOUT < time (NULL))
{
g_snprintf (buf, sizeof (buf), "SSL handshake timed out");
EMIT_SIGNAL (XP_TE_CONNFAIL, serv->server_session, buf, NULL,
NULL, NULL, 0);
server_cleanup (serv); /* ->connecting = FALSE */
if (prefs.hex_net_auto_reconnectonfail)
auto_reconnect (serv, FALSE, -1);
return (0); /* remove it (0) */
}
return (1); /* call it more (1) */
}
}
#endif
static int
timeout_auto_reconnect (server *serv)
{
if (is_server (serv)) /* make sure it hasnt been closed during the delay */
{
serv->recondelay_tag = 0;
if (!serv->connected && !serv->connecting && serv->server_session)
{
server_connect (serv, serv->hostname, serv->port, FALSE);
}
}
return 0; /* returning 0 should remove the timeout handler */
}
static void
auto_reconnect (server *serv, int send_quit, int err)
{
session *s;
GSList *list;
int del;
if (serv->server_session == NULL)
return;
list = sess_list;
while (list) /* make sure auto rejoin can work */
{
s = list->data;
if (s->type == SESS_CHANNEL && s->channel[0])
{
strcpy (s->waitchannel, s->channel);
strcpy (s->willjoinchannel, s->channel);
}
list = list->next;
}
if (serv->connected)
server_disconnect (serv->server_session, send_quit, err);
del = prefs.hex_net_reconnect_delay * 1000;
if (del < 1000)
del = 500; /* so it doesn't block the gui */
#ifndef WIN32
if (err == -1 || err == 0 || err == ECONNRESET || err == ETIMEDOUT)
#else
if (err == -1 || err == 0 || err == WSAECONNRESET || err == WSAETIMEDOUT)
#endif
serv->reconnect_away = serv->is_away;
/* is this server in a reconnect delay? remove it! */
if (serv->recondelay_tag)
{
fe_timeout_remove (serv->recondelay_tag);
serv->recondelay_tag = 0;
}
serv->recondelay_tag = fe_timeout_add (del, timeout_auto_reconnect, serv);
fe_server_event (serv, FE_SE_RECONDELAY, del);
}
static void
server_flush_queue (server *serv)
{
list_free (&serv->outbound_queue);
serv->sendq_len = 0;
fe_set_throttle (serv);
}
/* connect() successed */
static void
server_connect_success (server *serv)
{
#ifdef USE_OPENSSL
#define SSLDOCONNTMOUT 300
if (serv->use_ssl)
{
char *err;
/* it'll be a memory leak, if connection isn't terminated by
server_cleanup() */
serv->ssl = _SSL_socket (serv->ctx, serv->sok);
if ((err = _SSL_set_verify (serv->ctx, ssl_cb_verify, NULL)))
{
EMIT_SIGNAL (XP_TE_CONNFAIL, serv->server_session, err, NULL,
NULL, NULL, 0);
server_cleanup (serv); /* ->connecting = FALSE */
return;
}
/* FIXME: it'll be needed by new servers */
/* send(serv->sok, "STLS\r\n", 6, 0); sleep(1); */
set_nonblocking (serv->sok);
serv->ssl_do_connect_tag = fe_timeout_add (SSLDOCONNTMOUT,
ssl_do_connect, serv);
return;
}
serv->ssl = NULL;
#endif
server_stopconnecting (serv); /* ->connecting = FALSE */
/* activate glib poll */
server_connected (serv);
}
/* kill all sockets & iotags of a server. Stop a connection attempt, or
disconnect if already connected. */
static int
server_cleanup (server * serv)
{
fe_set_lag (serv, 0);
if (serv->iotag)
{
fe_input_remove (serv->iotag);
serv->iotag = 0;
}
if (serv->joindelay_tag)
{
fe_timeout_remove (serv->joindelay_tag);
serv->joindelay_tag = 0;
}
#ifdef USE_OPENSSL
if (serv->ssl)
{
SSL_shutdown (serv->ssl);
SSL_free (serv->ssl);
serv->ssl = NULL;
}
#endif
if (serv->connecting)
{
server_stopconnecting (serv);
closesocket (serv->sok4);
if (serv->proxy_sok4 != -1)
closesocket (serv->proxy_sok4);
if (serv->sok6 != -1)
closesocket (serv->sok6);
if (serv->proxy_sok6 != -1)
closesocket (serv->proxy_sok6);
return 1;
}
if (serv->connected)
{
close_socket (serv->sok);
if (serv->proxy_sok)
close_socket (serv->proxy_sok);
serv->connected = FALSE;
serv->end_of_motd = FALSE;
return 2;
}
/* is this server in a reconnect delay? remove it! */
if (serv->recondelay_tag)
{
fe_timeout_remove (serv->recondelay_tag);
serv->recondelay_tag = 0;
return 3;
}
return 0;
}
static void
server_disconnect (session * sess, int sendquit, int err)
{
server *serv = sess->server;
GSList *list;
gboolean shutup = FALSE;
/* send our QUIT reason */
if (sendquit && serv->connected)
{
server_sendquit (sess);
}
fe_server_event (serv, FE_SE_DISCONNECT, 0);
/* close all sockets & io tags */
switch (server_cleanup (serv))
{
case 0: /* it wasn't even connected! */
notc_msg (sess);
return;
case 1: /* it was in the process of connecting */
EMIT_SIGNAL (XP_TE_STOPCONNECT, sess, NULL, NULL, NULL, NULL, 0);
g_cancellable_cancel (serv->cancellable);
return;
case 3:
shutup = TRUE; /* won't print "disconnected" in channels */
}
server_flush_queue (serv);
list = sess_list;
while (list)
{
sess = (struct session *) list->data;
if (sess->server == serv)
{
if (!shutup || sess->type == SESS_SERVER)
/* print "Disconnected" to each window using this server */
EMIT_SIGNAL (XP_TE_DISCON, sess, errorstring (err), NULL, NULL, NULL, 0);
if (!sess->channel[0] || sess->type == SESS_CHANNEL)
clear_channel (sess);
}
list = list->next;
}
serv->pos = 0;
serv->motd_skipped = FALSE;
serv->no_login = FALSE;
serv->servername[0] = 0;
serv->lag_sent = 0;
notify_cleanup ();
}
struct sock_connect
{
char version;
char type;
guint16 port;
guint32 address;
char username[10];
};
/* traverse_socks() returns:
* 0 success *
* 1 socks traversal failed */
static int
traverse_socks (int sok, char *serverAddr, int port, GError **error)
{
struct sock_connect sc;
unsigned char buf[256];
sc.version = 4;
sc.type = 1;
sc.port = htons (port);
sc.address = inet_addr (serverAddr);
strncpy (sc.username, prefs.hex_irc_user_name, 9);
send (sok, (char *) &sc, 8 + strlen (sc.username) + 1, 0);
buf[1] = 0;
recv (sok, buf, 10, 0);
if (buf[1] == 90)
return 0;
g_snprintf (buf, sizeof (buf), "SOCKS\tServer reported error %d,%d.\n", buf[0], buf[1]);
*error = g_error_new_literal (HEXCHAT_CONNECTION_ERROR, PROXY_FAILED, buf);
return 1;
}
struct sock5_connect1
{
char version;
char nmethods;
char method;
};
static int
traverse_socks5 (int sok, char *serverAddr, int port, GError **error)
{
struct sock5_connect1 sc1;
unsigned char *sc2;
unsigned int packetlen, addrlen;
unsigned char buf[260];
int auth = prefs.hex_net_proxy_auth && prefs.hex_net_proxy_user[0] && prefs.hex_net_proxy_pass[0];
sc1.version = 5;
sc1.nmethods = 1;
if (auth)
sc1.method = 2; /* Username/Password Authentication (UPA) */
else
sc1.method = 0; /* NO Authentication */
send (sok, (char *) &sc1, 3, 0);
if (recv (sok, buf, 2, 0) != 2)
goto read_error;
if (buf[0] != 5)
{
*error = g_error_new_literal (HEXCHAT_CONNECTION_ERROR, PROXY_FAILED, "SOCKS\tServer is not socks version 5.\n");
return 1;
}
/* did the server say no auth required? */
if (buf[1] == 0)
auth = 0;
if (auth)
{
int len_u=0, len_p=0;
/* authentication sub-negotiation (RFC1929) */
if (buf[1] != 2) /* UPA not supported by server */
{
*error = g_error_new_literal (HEXCHAT_CONNECTION_ERROR, PROXY_FAILED, "SOCKS\tServer doesn't support UPA authentication.\n");
return 1;
}
memset (buf, 0, sizeof(buf));
/* form the UPA request */
len_u = strlen (prefs.hex_net_proxy_user);
len_p = strlen (prefs.hex_net_proxy_pass);
buf[0] = 1;
buf[1] = len_u;
memcpy (buf + 2, prefs.hex_net_proxy_user, len_u);
buf[2 + len_u] = len_p;
memcpy (buf + 3 + len_u, prefs.hex_net_proxy_pass, len_p);
send (sok, buf, 3 + len_u + len_p, 0);
if ( recv (sok, buf, 2, 0) != 2 )
goto read_error;
if ( buf[1] != 0 )
{
*error = g_error_new_literal (HEXCHAT_CONNECTION_ERROR, PROXY_FAILED, "SOCKS\tAuthentication failed. "
"Is username and password correct?\n");
return 1; /* UPA failed! */
}
}
else
{
if (buf[1] != 0)
{
*error = g_error_new_literal (HEXCHAT_CONNECTION_ERROR, PROXY_FAILED, "SOCKS\tAuthentication required but disabled in settings.\n");
return 1;
}
}
addrlen = strlen (serverAddr);
packetlen = 4 + 1 + addrlen + 2;
sc2 = g_malloc (packetlen);
sc2[0] = 5; /* version */
sc2[1] = 1; /* command */
sc2[2] = 0; /* reserved */
sc2[3] = 3; /* address type */
sc2[4] = (unsigned char) addrlen; /* hostname length */
memcpy (sc2 + 5, serverAddr, addrlen);
*((unsigned short *) (sc2 + 5 + addrlen)) = htons (port);
send (sok, sc2, packetlen, 0);
g_free (sc2);
/* consume all of the reply */
if (recv (sok, buf, 4, 0) != 4)
goto read_error;
if (buf[0] != 5 || buf[1] != 0)
{
if (buf[1] == 2)
g_snprintf (buf, sizeof (buf), "SOCKS\tProxy refused to connect to host (not allowed).\n");
else
g_snprintf (buf, sizeof (buf), "SOCKS\tProxy failed to connect to host (error %d).\n", buf[1]);
*error = g_error_new_literal (HEXCHAT_CONNECTION_ERROR, PROXY_FAILED, buf);
return 1;
}
if (buf[3] == 1) /* IPV4 32bit address */
{
if (recv (sok, buf, 6, 0) != 6)
goto read_error;
} else if (buf[3] == 4) /* IPV6 128bit address */
{
if (recv (sok, buf, 18, 0) != 18)
goto read_error;
} else if (buf[3] == 3) /* string, 1st byte is size */
{
if (recv (sok, buf, 1, 0) != 1) /* read the string size */
goto read_error;
packetlen = buf[0] + 2; /* can't exceed 260 */
if (recv (sok, buf, packetlen, 0) != packetlen)
goto read_error;
}
return 0; /* success */
read_error:
*error = g_error_new_literal (HEXCHAT_CONNECTION_ERROR, PROXY_FAILED, "SOCKS\tRead error from server.\n");
return 1;
}
static int
traverse_wingate (int sok, char *serverAddr, int port, GError **error)
{
char buf[128];
g_snprintf (buf, sizeof (buf), "%s %d\r\n", serverAddr, port);
send (sok, buf, strlen (buf), 0);
return 0;
}
/* stuff for HTTP auth is here */
static void
three_to_four (char *from, char *to)
{
static const char tab64[64]=
{
'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f',
'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/'
};
to[0] = tab64 [ (from[0] >> 2) & 63 ];
to[1] = tab64 [ ((from[0] << 4) | (from[1] >> 4)) & 63 ];
to[2] = tab64 [ ((from[1] << 2) | (from[2] >> 6)) & 63 ];
to[3] = tab64 [ from[2] & 63 ];
};
void
base64_encode (char *to, char *from, unsigned int len)
{
while (len >= 3)
{
three_to_four (from, to);
len -= 3;
from += 3;
to += 4;
}
if (len)
{
char three[3] = {0,0,0};
unsigned int i;
for (i = 0; i < len; i++)
{
three[i] = *from++;
}
three_to_four (three, to);
if (len == 1)
{
to[2] = to[3] = '=';
}
else if (len == 2)
{
to[3] = '=';
}
to += 4;
};
to[0] = 0;
}
static int
traverse_http (int sok, char *serverAddr, int port, GError **error)
{
char buf[512];
char auth_data[256];
char auth_data2[252];
int n, n2;
n = g_snprintf (buf, sizeof (buf), "CONNECT %s:%d HTTP/1.0\r\n",
serverAddr, port);
if (prefs.hex_net_proxy_auth)
{
n2 = g_snprintf (auth_data2, sizeof (auth_data2), "%s:%s",
prefs.hex_net_proxy_user, prefs.hex_net_proxy_pass);
base64_encode (auth_data, auth_data2, n2);
n += g_snprintf (buf+n, sizeof (buf)-n, "Proxy-Authorization: Basic %s\r\n", auth_data);
}
n += g_snprintf (buf+n, sizeof (buf)-n, "\r\n");
send (sok, buf, n, 0);
n = waitline (sok, buf, sizeof(buf), TRUE);
/* "HTTP/1.0 200 OK" */
if (n < 12 || (memcmp (buf, "HTTP/", 5) || memcmp (buf + 9, "200", 3)))
{
*error = g_error_new_literal (HEXCHAT_CONNECTION_ERROR, PROXY_FAILED, buf);
return 1;
}
while (1)
{
/* read until blank line */
n = waitline (sok, buf, sizeof(buf), TRUE);
if (n < 1 || (n == 1 && buf[0] == '\n'))
break;
}
return 0;
}
static int
traverse_proxy (int proxy_type, int sok, char *ip, int port, GError **error)
{
switch (proxy_type)
{
case 1:
return traverse_wingate (sok, ip, port, error);
case 2:
return traverse_socks (sok, ip, port, error);
case 3:
return traverse_socks5 (sok, ip, port, error);
case 4:
return traverse_http (sok, ip, port, error);
}
return 1;
}
struct connect_data
{
server *serv;
char *local_ip;
char *hostname;
char *proxy_hostname;
char *ip;
char *port;
};
static void
connect_data_free (struct connect_data *data)
{
if (data)
{
g_free (data->local_ip);
g_free (data->hostname);
g_free (data->proxy_hostname);
g_free (data->ip);
g_free (data->port);
g_free (data);
}
}
static void
server_connect_finish (GObject *source, GAsyncResult *res, gpointer user_data)
{
GError *error = NULL;
server *serv;
session *sess;
struct connect_data *data;
gboolean retry = FALSE;
char buf[256];
data = (struct connect_data*)g_task_get_task_data (G_TASK(res));
serv = data->serv;
if (!is_server(serv))
{
g_warning ("Server destroyed before connection finished!\n");
return;
}
sess = serv->server_session;
/* These print after the fact, but should be good enough */
if (data->proxy_hostname)
EMIT_SIGNAL (XP_TE_SERVERLOOKUP, sess, data->proxy_hostname, NULL, NULL, NULL, 0);
EMIT_SIGNAL (XP_TE_CONNECT, sess, data->hostname, data->ip, data->port, NULL, 0);
/* Update local ip for dcc */
if (data->local_ip)
prefs.local_ip = inet_addr (data->local_ip);
serv->sok = g_task_propagate_int (G_TASK(res), &error);
if (!error)
{
if (serv->sok == serv->sok4)
closesocket (serv->sok6);
else
closesocket (serv->sok4);
if (serv->proxy_sok != -1)
{
if (serv->proxy_sok == serv->proxy_sok4)
closesocket (serv->proxy_sok6);
else
closesocket (serv->proxy_sok4);
}
{
struct sockaddr addr;
int addr_len = sizeof (addr);
guint16 port;
if (!getsockname (serv->sok, &addr, &addr_len))
{
if (addr.sa_family == AF_INET)
port = ntohs(((struct sockaddr_in *)&addr)->sin_port);
else
port = ntohs(((struct sockaddr_in6 *)&addr)->sin6_port);
g_snprintf (buf, sizeof (buf), "IDENTD %"G_GUINT16_FORMAT" ", port);
if (serv->network && ((ircnet *)serv->network)->user)
g_strlcat (buf, ((ircnet *)serv->network)->user, sizeof (buf));
else
g_strlcat (buf, prefs.hex_irc_user_name, sizeof (buf));
handle_command (serv->server_session, buf, FALSE);
}
}
server_connect_success (serv);
return;
}
g_warning ("%s\n", error->message);
switch (error->code)
{
case RESOLVE_FAILED:
retry = TRUE;
EMIT_SIGNAL (XP_TE_UKNHOST, sess, NULL, NULL, NULL, NULL, 0);
goto close_connection;
case CONNECTION_FAILED:
retry = TRUE;
EMIT_SIGNAL (XP_TE_CONNFAIL, sess, error->message, NULL, NULL, NULL, 0);
goto close_connection;
case BIND_FAILED:
PrintText (sess, error->message);
break;
case PROXY_FAILED:
PrintTextf (sess, _("Proxy Traveral Failed: %s\n"), error->message);
server_disconnect (sess, FALSE, -1);
break;
case 9:
EMIT_SIGNAL (XP_TE_SERVERLOOKUP, sess, error->message, NULL, NULL, NULL, 0);
break;
case G_IO_ERROR_CANCELLED:
EMIT_SIGNAL (XP_TE_STOPCONNECT, sess, NULL, NULL, NULL, NULL, 0);
goto close_connection;
default:
g_warning ("%d\n", error->code);
g_assert_not_reached ();
}
return;
close_connection:
server_stopconnecting (serv);
closesocket (serv->sok4);
if (serv->proxy_sok4 != -1)
closesocket (serv->proxy_sok4);
if (serv->sok6 != -1)
closesocket (serv->sok6);
if (serv->proxy_sok6 != -1)
closesocket (serv->proxy_sok6);
if (retry && !servlist_cycle (serv) && prefs.hex_net_auto_reconnectonfail)
auto_reconnect (serv, FALSE, -1);
}
static void
server_connect_thread (GTask *task, gpointer source, gpointer task_data, GCancellable *cancellable)
{
netstore *ns_server;
struct connect_data *data = (struct connect_data*)task_data;
server *serv = data->serv;
int port = serv->port;
int error;
int sok = -1, psok;
char *hostname = serv->hostname;
char *proxy_ip = NULL;
int connect_port;
int proxy_type = 0;
char *proxy_host = NULL;
int proxy_port;
if (!is_server(serv))
{
g_warning ("Server destroyed before connection started!\n");
return;
}
ns_server = net_store_new ();
if (prefs.hex_net_bind_host[0])
{
netstore *ns_local = net_store_new ();
data->local_ip = net_resolve (ns_local, prefs.hex_net_bind_host, 0, NULL);
if (data->local_ip != NULL)
{
net_bind (ns_local, serv->sok4, serv->sok6);
} else
{
g_task_return_new_error (task, HEXCHAT_CONNECTION_ERROR, BIND_FAILED,
"Cannot resolve hostname %s\nCheck your IP Settings!\n", prefs.hex_net_bind_host);
net_store_destroy (ns_local);
goto error_cleanup;
}
net_store_destroy (ns_local);
}
if (!serv->dont_use_proxy) /* blocked in serverlist? */
{
#ifdef USE_LIBPROXY
if (prefs.hex_net_proxy_type == 5)
{
char **proxy_list;
char *url, *proxy;
url = g_strdup_printf ("irc://%s:%d", hostname, port);
proxy_list = px_proxy_factory_get_proxies (libproxy_factory, url);
if (proxy_list) {
/* can use only one */
proxy = proxy_list[0];
if (!strncmp (proxy, "direct", 6))
proxy_type = 0;
else if (!strncmp (proxy, "http", 4))
proxy_type = 4;
else if (!strncmp (proxy, "socks5", 6))
proxy_type = 3;
else if (!strncmp (proxy, "socks", 5))
proxy_type = 2;
}
if (proxy_type) {
char *c;
c = strchr (proxy, ':') + 3;
proxy_host = g_strdup (c);
c = strchr (proxy_host, ':');
*c = '\0';
proxy_port = atoi (c + 1);
}
g_strfreev (proxy_list);
g_free (url);
}
#endif
if (prefs.hex_net_proxy_host[0] &&
prefs.hex_net_proxy_type > 0 &&
prefs.hex_net_proxy_use != 2) /* proxy is NOT dcc-only */
{
proxy_type = prefs.hex_net_proxy_type;
proxy_host = g_strdup (prefs.hex_net_proxy_host);
proxy_port = prefs.hex_net_proxy_port;
}
}
serv->proxy_type = proxy_type;
data->proxy_hostname = proxy_host;
if (proxy_type > 0)
{
data->ip = net_resolve (ns_server, proxy_host, proxy_port, &data->hostname);
if (!data->ip)
{
g_task_return_new_error (task, HEXCHAT_CONNECTION_ERROR, RESOLVE_FAILED,
"Unknown hostname %s\n", proxy_host);
goto error_cleanup;
}
connect_port = proxy_port;
/* if using socks4, attempt to resolve ip for irc server */
if ((proxy_type == 2) || (proxy_type == 5))
{
netstore *ns_proxy = net_store_new ();
g_free (data->hostname);
proxy_ip = net_resolve (ns_proxy, hostname, port, &data->hostname);
net_store_destroy (ns_proxy);
if (!proxy_ip)
{
g_task_return_new_error (task, HEXCHAT_CONNECTION_ERROR, RESOLVE_FAILED,
"Unknown hostname %s\n", hostname);
goto error_cleanup;
}
} else /* otherwise we can just use the hostname */
proxy_ip = g_strdup (hostname);
}
else
{
data->ip = net_resolve (ns_server, hostname, port, &data->hostname);
if (!data->ip)
{
g_task_return_new_error (task, HEXCHAT_CONNECTION_ERROR, RESOLVE_FAILED,
"Unknown hostname %s\n", hostname);
goto error_cleanup;
}
connect_port = port;
}
data->port = g_strdup_printf ("%d", connect_port);
if (!serv->dont_use_proxy && (proxy_type == 5))
error = net_connect (ns_server, serv->proxy_sok4, serv->proxy_sok6, &psok);
else
{
error = net_connect (ns_server, serv->sok4, serv->sok6, &sok);
psok = sok;
}
if (error != 0)
{
g_task_return_new_error (task, HEXCHAT_CONNECTION_ERROR, CONNECTION_FAILED, "%s", errorstring (sock_error()));
goto error_cleanup;
}
else
{
GError *err = NULL;
/* connect succeeded */
if (proxy_ip && traverse_proxy (proxy_type, psok, proxy_ip, port, &err))
{
g_task_return_error (task, err);
goto error_cleanup;
}
}
error_cleanup:
net_store_destroy (ns_server);
g_free (proxy_ip);
g_task_return_int (task, sok); /* Does nothing if error'd */
return;
}
static void
server_connect (server *serv, char *hostname, int port, int no_login)
{
session *sess = serv->server_session;
GTask *task;
struct connect_data *data;
#ifdef USE_OPENSSL
if (!serv->ctx && serv->use_ssl)
{
if (!(serv->ctx = _SSL_context_init (ssl_cb_info, FALSE)))
{
fprintf (stderr, "_SSL_context_init failed\n");
exit (1);
}
}
#endif
if (!hostname[0])
return;
if (port < 0)
{
/* use default port for this server type */
port = 6667;
#ifdef USE_OPENSSL
if (serv->use_ssl)
port = 6697;
#endif
}
port &= 0xffff; /* wrap around */
if (serv->connected || serv->connecting || serv->recondelay_tag)
server_disconnect (sess, TRUE, -1);
fe_progressbar_start (sess);
EMIT_SIGNAL (XP_TE_SERVERLOOKUP, sess, hostname, NULL, NULL, NULL, 0);
safe_strcpy (serv->servername, hostname, sizeof (serv->servername));
/* overlap illegal in strncpy */
if (hostname != serv->hostname)
safe_strcpy (serv->hostname, hostname, sizeof (serv->hostname));
#ifdef USE_OPENSSL
if (serv->use_ssl)
{
char *cert_file;
serv->have_cert = FALSE;
/* first try network specific cert/key */
cert_file = g_strdup_printf ("%s" G_DIR_SEPARATOR_S "certs" G_DIR_SEPARATOR_S "%s.pem",
get_xdir (), server_get_network (serv, TRUE));
if (SSL_CTX_use_certificate_file (serv->ctx, cert_file, SSL_FILETYPE_PEM) == 1)
{
if (SSL_CTX_use_PrivateKey_file (serv->ctx, cert_file, SSL_FILETYPE_PEM) == 1)
serv->have_cert = TRUE;
}
else
{
/* if that doesn't exist, try <config>/certs/client.pem */
cert_file = g_build_filename (get_xdir (), "certs", "client.pem", NULL);
if (SSL_CTX_use_certificate_file (serv->ctx, cert_file, SSL_FILETYPE_PEM) == 1)
{
if (SSL_CTX_use_PrivateKey_file (serv->ctx, cert_file, SSL_FILETYPE_PEM) == 1)
serv->have_cert = TRUE;
}
}
g_free (cert_file);
}
#endif
server_set_defaults (serv);
serv->connecting = TRUE;
serv->port = port;
serv->no_login = no_login;
fe_server_event (serv, FE_SE_CONNECTING, 0);
fe_set_away (serv);
server_flush_queue (serv);
/* create both sockets now, drop one later */
net_sockets (&serv->sok4, &serv->sok6);
serv->proxy_sok4 = -1;
serv->proxy_sok6 = -1;
/* start the connection in a thread */
data = g_new0 (struct connect_data, 1);
data->serv = serv;
serv->cancellable = g_cancellable_new ();
task = g_task_new (NULL, serv->cancellable, server_connect_finish, NULL);
g_task_set_task_data (task, data, (GDestroyNotify)connect_data_free);
g_task_set_return_on_cancel (task, TRUE);
g_task_run_in_thread (task, server_connect_thread);
g_object_unref (task);
}
void
server_fill_her_up (server *serv)
{
serv->connect = server_connect;
serv->disconnect = server_disconnect;
serv->cleanup = server_cleanup;
serv->flush_queue = server_flush_queue;
serv->auto_reconnect = auto_reconnect;
proto_fill_her_up (serv);
}
void
server_set_encoding (server *serv, char *new_encoding)
{
char *space;
if (serv->encoding)
{
g_free (serv->encoding);
/* can be left as NULL to indicate system encoding */
serv->encoding = NULL;
serv->using_cp1255 = FALSE;
serv->using_irc = FALSE;
}
if (new_encoding)
{
serv->encoding = g_strdup (new_encoding);
/* the serverlist GUI might have added a space
and short description - remove it. */
space = strchr (serv->encoding, ' ');
if (space)
space[0] = 0;
/* server_inline() uses these flags */
if (!g_ascii_strcasecmp (serv->encoding, "CP1255") ||
!g_ascii_strcasecmp (serv->encoding, "WINDOWS-1255"))
serv->using_cp1255 = TRUE;
else if (!g_ascii_strcasecmp (serv->encoding, "IRC"))
serv->using_irc = TRUE;
}
}
server *
server_new (void)
{
static int id = 0;
server *serv;
serv = g_new0 (struct server, 1);
/* use server.c and proto-irc.c functions */
server_fill_her_up (serv);
serv->id = id++;
serv->sok = -1;
strcpy (serv->nick, prefs.hex_irc_nick1);
server_set_defaults (serv);
serv_list = g_slist_prepend (serv_list, serv);
fe_new_server (serv);
return serv;
}
int
is_server (server *serv)
{
return g_slist_find (serv_list, serv) ? 1 : 0;
}
void
server_set_defaults (server *serv)
{
g_free (serv->chantypes);
g_free (serv->chanmodes);
g_free (serv->nick_prefixes);
g_free (serv->nick_modes);
serv->chantypes = g_strdup ("#&!+");
serv->chanmodes = g_strdup ("beI,k,l");
serv->nick_prefixes = g_strdup ("@%+");
serv->nick_modes = g_strdup ("ohv");
serv->nickcount = 1;
serv->end_of_motd = FALSE;
serv->is_away = FALSE;
serv->supports_watch = FALSE;
serv->supports_monitor = FALSE;
serv->bad_prefix = FALSE;
serv->use_who = TRUE;
serv->have_namesx = FALSE;
serv->have_awaynotify = FALSE;
serv->have_uhnames = FALSE;
serv->have_whox = FALSE;
serv->have_idmsg = FALSE;
serv->have_accnotify = FALSE;
serv->have_extjoin = FALSE;
serv->have_server_time = FALSE;
serv->have_sasl = FALSE;
serv->have_except = FALSE;
serv->have_invite = FALSE;
}
char *
server_get_network (server *serv, gboolean fallback)
{
/* check the network list */
if (serv->network)
return ((ircnet *)serv->network)->name;
/* check the network name given in 005 NETWORK=... */
if (serv->server_session && *serv->server_session->channel)
return serv->server_session->channel;
if (fallback)
return serv->servername;
return NULL;
}
void
server_set_name (server *serv, char *name)
{
GSList *list = sess_list;
session *sess;
if (name[0] == 0)
name = serv->hostname;
/* strncpy parameters must NOT overlap */
if (name != serv->servername)
{
safe_strcpy (serv->servername, name, sizeof (serv->servername));
}
while (list)
{
sess = (session *) list->data;
if (sess->server == serv)
fe_set_title (sess);
list = list->next;
}
if (serv->server_session->type == SESS_SERVER)
{
if (serv->network)
{
safe_strcpy (serv->server_session->channel, ((ircnet *)serv->network)->name, CHANLEN);
} else
{
safe_strcpy (serv->server_session->channel, name, CHANLEN);
}
fe_set_channel (serv->server_session);
}
}
struct away_msg *
server_away_find_message (server *serv, char *nick)
{
struct away_msg *away;
GSList *list = away_list;
while (list)
{
away = (struct away_msg *) list->data;
if (away->server == serv && !serv->p_cmp (nick, away->nick))
return away;
list = list->next;
}
return NULL;
}
static void
server_away_free_messages (server *serv)
{
GSList *list, *next;
struct away_msg *away;
list = away_list;
while (list)
{
away = list->data;
next = list->next;
if (away->server == serv)
{
away_list = g_slist_remove (away_list, away);
g_free (away->message);
g_free (away);
next = away_list;
}
list = next;
}
}
void
server_away_save_message (server *serv, char *nick, char *msg)
{
struct away_msg *away = server_away_find_message (serv, nick);
if (away) /* Change message for known user */
{
g_free (away->message);
away->message = g_strdup (msg);
}
else
{
/* Create brand new entry */
away = g_new(struct away_msg, 1);
away->server = serv;
safe_strcpy (away->nick, nick, sizeof (away->nick));
away->message = g_strdup (msg);
away_list = g_slist_prepend (away_list, away);
}
}
void
server_free (server *serv)
{
serv->cleanup (serv);
serv_list = g_slist_remove (serv_list, serv);
dcc_notify_kill (serv);
serv->flush_queue (serv);
server_away_free_messages (serv);
g_free (serv->nick_modes);
g_free (serv->nick_prefixes);
g_free (serv->chanmodes);
g_free (serv->chantypes);
g_free (serv->bad_nick_prefixes);
g_free (serv->last_away_reason);
g_free (serv->encoding);
if (serv->favlist)
g_slist_free_full (serv->favlist, (GDestroyNotify) servlist_favchan_free);
#ifdef USE_OPENSSL
if (serv->ctx)
_SSL_context_free (serv->ctx);
#endif
fe_server_callback (serv);
g_free (serv);
notify_cleanup ();
}
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