/* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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.
*/
/*#define DEBUG_MSPROXY*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#define WANTSOCKET
#define WANTARPA
#include "inet.h"
#ifndef WIN32
#include <signal.h>
#include <sys/wait.h>
#else
#include <winbase.h>
#endif
#include "xchat.h"
#include "fe.h"
#include "cfgfiles.h"
#include "network.h"
#include "notify.h"
#include "xchatc.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_MSPROXY
#include "msproxy.h"
#endif
#ifdef WIN32
#include "identd.c"
#endif
#ifdef USE_OPENSSL
extern SSL_CTX *ctx; /* xchat.c */
/* 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);
/* 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);
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);
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.throttle)
return server_send_real (serv, buf, len);
dbuf = 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 (strncasecmp (dbuf + 1, "PRIVMSG", 7) == 0 ||
strncasecmp (dbuf + 1, "NOTICE", 6) == 0)
{
dbuf[0] = 1;
}
else
{
/* WHO/MODE get the lowest priority */
if (strncasecmp (dbuf + 1, "WHO ", 4) == 0 ||
/* but only MODE queries, not changes */
(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, 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 = 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, int 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 */
(strcasecmp (serv->encoding, "UTF8") == 0 ||
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 */
int 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);
url_check_line (line, len);
/* let proto-irc.c handle it */
serv->p_inline (serv, line, len);
if (utf_line_allocated != NULL) /* only if a special copy was allocated */
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.autoreconnect)
auto_reconnect (serv, FALSE, error);
}
} else
{
if (prefs.autoreconnect)
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,
"*** XCHAT 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->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.username,
(!(((ircnet *)serv->network)->flags & FLAG_USE_GLOBAL) &&
(((ircnet *)serv->network)->real)) ?
(((ircnet *)serv->network)->real) :
prefs.realname);
} else
{
serv->p_login (serv, prefs.username, prefs.realname);
}
} 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. */
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;
}
#ifndef WIN32
/* kill the child process trying to connect */
kill (serv->childpid, SIGKILL);
waitpid (serv->childpid, NULL, 0);
close (serv->childwrite);
close (serv->childread);
#else
PostThreadMessage (serv->childpid, WM_QUIT, 0, 0);
{
/* if we close the pipe now, giowin32 will crash. */
int *pipefd = malloc (sizeof (int) * 2);
pipefd[0] = serv->childwrite;
pipefd[1] = serv->childread;
g_idle_add ((GSourceFunc)server_close_pipe, pipefd);
}
#endif
#ifdef USE_OPENSSL
if (serv->ssl_do_connect_tag)
{
fe_timeout_remove (serv->ssl_do_connect_tag);
serv->ssl_do_connect_tag = 0;
}
#endif
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 */
/* 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));
snprintf (buf, sizeof (buf), "* Subject: %s", subject);
EMIT_SIGNAL (XP_TE_SSLMESSAGE, g_sess, buf, NULL, NULL, NULL, 0);
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);
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.autoreconnectonfail)
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))
{
snprintf (buf, sizeof (buf), "* Certification info:");
EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL,
NULL, 0);
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++)
{
snprintf (buf, sizeof (buf), " %s", cert_info.subject_word[i]);
EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL,
NULL, 0);
}
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++)
{
snprintf (buf, sizeof (buf), " %s", cert_info.issuer_word[i]);
EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL,
NULL, 0);
}
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)
{
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);
}*/
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);
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
{
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 */
snprintf (buf, sizeof (buf), "* Cipher info:");
EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL, NULL,
0);
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:
/* snprintf (buf, sizeof (buf), "* Verify OK (?)"); */
/* EMIT_SIGNAL (XP_TE_SSLMESSAGE, serv->server_session, buf, NULL, NULL, NULL, 0); */
break;
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)
{
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:
snprintf (buf, sizeof (buf), "%s.? (%d)",
X509_verify_cert_error_string (verify_error),
verify_error);
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))
{
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.autoreconnectonfail)
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.recon_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);
}
#ifdef WIN32
static int
waitline2 (GIOChannel *source, char *buf, int bufsize)
{
int i = 0;
int len;
while (1)
{
if (g_io_channel_read (source, &buf[i], 1, &len) != G_IO_ERROR_NONE)
return -1;
if (buf[i] == '\n' || bufsize == i + 1)
{
buf[i] = 0;
return i;
}
i++;
}
}
#else
#define waitline2(source,buf,size) waitline(serv->childread,buf,size,0)
#endif
/* 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 (ctx, serv->sok);
if ((err = _SSL_set_verify (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);
}
/* receive info from the child-process about connection progress */
static gboolean
server_read_child (GIOChannel *source, GIOCondition condition, server *serv)
{
session *sess = serv->server_session;
char tbuf[128];
char outbuf[512];
char host[100];
char ip[100];
char *p;
waitline2 (source, tbuf, sizeof tbuf);
switch (tbuf[0])
{
case '0': /* print some text */
waitline2 (source, tbuf, sizeof tbuf);
PrintText (serv->server_session, tbuf);
break;
case '1': /* unknown host */
server_stopconnecting (serv);
closesocket (serv->sok4);
if (serv->proxy_sok4 != -1)
closesocket (serv->proxy_sok4);
#ifdef USE_IPV6
if (serv->sok6 != -1)
closesocket (serv->sok6);
if (serv->proxy_sok6 != -1)
closesocket (serv->proxy_sok6);
#endif
EMIT_SIGNAL (XP_TE_UKNHOST, sess, NULL, NULL, NULL, NULL, 0);
if (!servlist_cycle (serv))
if (prefs.autoreconnectonfail)
auto_reconnect (serv, FALSE, -1);
break;
case '2': /* connection failed */
waitline2 (source, tbuf, sizeof tbuf);
server_stopconnecting (serv);
closesocket (serv->sok4);
if (serv->proxy_sok4 != -1)
closesocket (serv->proxy_sok4);
#ifdef USE_IPV6
if (serv->sok6 != -1)
closesocket (serv->sok6);
if (serv->proxy_sok6 != -1)
closesocket (serv->proxy_sok6);
#endif
EMIT_SIGNAL (XP_TE_CONNFAIL, sess, errorstring (atoi (tbuf)), NULL,
NULL, NULL, 0);
if (!servlist_cycle (serv))
if (prefs.autoreconnectonfail)
auto_reconnect (serv, FALSE, -1);
break;
case '3': /* gethostbyname finished */
waitline2 (source, host, sizeof host);
waitline2 (source, ip, sizeof ip);
waitline2 (source, outbuf, sizeof outbuf);
EMIT_SIGNAL (XP_TE_CONNECT, sess, host, ip, outbuf, NULL, 0);
#ifdef WIN32
if (prefs.identd)
{
if (serv->network)
identd_start ((((ircnet *)serv->network)->user) ?
(((ircnet *)serv->network)->user) :
prefs.username);
else
identd_start (prefs.username);
}
#else
snprintf (outbuf, sizeof (outbuf), "%s/auth/xchat_auth",
g_get_home_dir ());
if (access (outbuf, X_OK) == 0)
{
snprintf (outbuf, sizeof (outbuf), "exec -d %s/auth/xchat_auth %s",
g_get_home_dir (), prefs.username);
handle_command (serv->server_session, outbuf, FALSE);
}
#endif
break;
case '4': /* success */
waitline2 (source, tbuf, sizeof (tbuf));
#ifdef USE_MSPROXY
serv->sok = strtol (tbuf, &p, 10);
if (*p++ == ' ')
{
serv->proxy_sok = strtol (p, &p, 10);
serv->msp_state.clientid = strtol (++p, &p, 10);
serv->msp_state.serverid = strtol (++p, &p, 10);
serv->msp_state.seq_sent = atoi (++p);
} else
serv->proxy_sok = -1;
#ifdef DEBUG_MSPROXY
printf ("Parent got main socket: %d, proxy socket: %d\n", serv->sok, serv->proxy_sok);
printf ("Client ID 0x%08x server ID 0x%08x seq_sent %d\n", serv->msp_state.clientid, serv->msp_state.serverid, serv->msp_state.seq_sent);
#endif
#else
serv->sok = atoi (tbuf);
#endif
#ifdef USE_IPV6
/* close the one we didn't end up using */
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);
}
#endif
server_connect_success (serv);
break;
case '5': /* prefs ip discovered */
waitline2 (source, tbuf, sizeof tbuf);
prefs.local_ip = inet_addr (tbuf);
break;
case '7': /* gethostbyname (prefs.hostname) failed */
sprintf (outbuf,
_("Cannot resolve hostname %s\nCheck your IP Settings!\n"),
prefs.hostname);
PrintText (sess, outbuf);
break;
case '8':
PrintText (sess, _("Proxy traversal failed.\n"));
server_disconnect (sess, FALSE, -1);
break;
case '9':
waitline2 (source, tbuf, sizeof tbuf);
EMIT_SIGNAL (XP_TE_SERVERLOOKUP, sess, tbuf, NULL, NULL, NULL, 0);
break;
}
return TRUE;
}
/* 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, 0.0);
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_close (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;
char tbuf[64];
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 */
sprintf (tbuf, "%d", sess->server->childpid);
EMIT_SIGNAL (XP_TE_STOPCONNECT, sess, tbuf, NULL, NULL, NULL, 0);
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 ();
}
/* send a "print text" command to the parent process - MUST END IN \n! */
static void
proxy_error (int fd, char *msg)
{
write (fd, "0\n", 2);
write (fd, msg, strlen (msg));
}
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 print_fd, int sok, char *serverAddr, int port)
{
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.username, 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;
snprintf (buf, sizeof (buf), "SOCKS\tServer reported error %d,%d.\n", buf[0], buf[1]);
proxy_error (print_fd, buf);
return 1;
}
struct sock5_connect1
{
char version;
char nmethods;
char method;
};
static int
traverse_socks5 (int print_fd, int sok, char *serverAddr, int port)
{
struct sock5_connect1 sc1;
unsigned char *sc2;
unsigned int packetlen, addrlen;
unsigned char buf[260];
int auth = prefs.proxy_auth && prefs.proxy_user[0] && prefs.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)
{
proxy_error (print_fd, "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 */
{
proxy_error (print_fd, "SOCKS\tServer doesn't support UPA authentication.\n");
return 1;
}
memset (buf, 0, sizeof(buf));
/* form the UPA request */
len_u = strlen (prefs.proxy_user);
len_p = strlen (prefs.proxy_pass);
buf[0] = 1;
buf[1] = len_u;
memcpy (buf + 2, prefs.proxy_user, len_u);
buf[2 + len_u] = len_p;
memcpy (buf + 3 + len_u, prefs.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 )
{
proxy_error (print_fd, "SOCKS\tAuthentication failed. "
"Is username and password correct?\n");
return 1; /* UPA failed! */
}
}
else
{
if (buf[1] != 0)
{
proxy_error (print_fd, "SOCKS\tAuthentication required but disabled in settings.\n");
return 1;
}
}
addrlen = strlen (serverAddr);
packetlen = 4 + 1 + addrlen + 2;
sc2 = 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);
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)
snprintf (buf, sizeof (buf), "SOCKS\tProxy refused to connect to host (not allowed).\n");
else
snprintf (buf, sizeof (buf), "SOCKS\tProxy failed to connect to host (error %d).\n", buf[1]);
proxy_error (print_fd, 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:
proxy_error (print_fd, "SOCKS\tRead error from server.\n");
return 1;
}
static int
traverse_wingate (int print_fd, int sok, char *serverAddr, int port)
{
char buf[128];
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};
int i=0;
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
http_read_line (int print_fd, int sok, char *buf, int len)
{
#ifdef WIN32
/* make sure waitline() uses recv() or it'll fail on win32 */
len = waitline (sok, buf, len, FALSE);
#else
len = waitline (sok, buf, len, TRUE);
#endif
if (len >= 1)
{
/* print the message out (send it to the parent process) */
write (print_fd, "0\n", 2);
if (buf[len-1] == '\r')
{
buf[len-1] = '\n';
write (print_fd, buf, len);
} else
{
write (print_fd, buf, len);
write (print_fd, "\n", 1);
}
}
return len;
}
static int
traverse_http (int print_fd, int sok, char *serverAddr, int port)
{
char buf[512];
char auth_data[256];
char auth_data2[252];
int n, n2;
n = snprintf (buf, sizeof (buf), "CONNECT %s:%d HTTP/1.0\r\n",
serverAddr, port);
if (prefs.proxy_auth)
{
n2 = snprintf (auth_data2, sizeof (auth_data2), "%s:%s",
prefs.proxy_user, prefs.proxy_pass);
base64_encode (auth_data, auth_data2, n2);
n += snprintf (buf+n, sizeof (buf)-n, "Proxy-Authorization: Basic %s\r\n", auth_data);
}
n += snprintf (buf+n, sizeof (buf)-n, "\r\n");
send (sok, buf, n, 0);
n = http_read_line (print_fd, sok, buf, sizeof (buf));
/* "HTTP/1.0 200 OK" */
if (n < 12)
return 1;
if (memcmp (buf, "HTTP/", 5) || memcmp (buf + 9, "200", 3))
return 1;
while (1)
{
/* read until blank line */
n = http_read_line (print_fd, sok, buf, sizeof (buf));
if (n < 1 || (n == 1 && buf[0] == '\n'))
break;
}
return 0;
}
static int
traverse_proxy (int print_fd, int sok, char *ip, int port, struct msproxy_state_t *state, netstore *ns_proxy, int csok4, int csok6, int *csok, char bound)
{
switch (prefs.proxy_type)
{
case 1:
return traverse_wingate (print_fd, sok, ip, port);
case 2:
return traverse_socks (print_fd, sok, ip, port);
case 3:
return traverse_socks5 (print_fd, sok, ip, port);
case 4:
return traverse_http (print_fd, sok, ip, port);
#ifdef USE_MSPROXY
case 5:
return traverse_msproxy (sok, ip, port, state, ns_proxy, csok4, csok6, csok, bound);
#endif
}
return 1;
}
/* this is the child process making the connection attempt */
static int
server_child (server * serv)
{
netstore *ns_server;
netstore *ns_proxy = NULL;
netstore *ns_local;
int port = serv->port;
int error;
int sok, psok;
char *hostname = serv->hostname;
char *real_hostname = NULL;
char *ip;
char *proxy_ip = NULL;
char *local_ip;
int connect_port;
char buf[512];
char bound = 0;
ns_server = net_store_new ();
/* is a hostname set? - bind to it */
if (prefs.hostname[0])
{
ns_local = net_store_new ();
local_ip = net_resolve (ns_local, prefs.hostname, 0, &real_hostname);
if (local_ip != NULL)
{
snprintf (buf, sizeof (buf), "5\n%s\n", local_ip);
write (serv->childwrite, buf, strlen (buf));
net_bind (ns_local, serv->sok4, serv->sok6);
bound = 1;
} else
{
write (serv->childwrite, "7\n", 2);
}
net_store_destroy (ns_local);
}
/* first resolve where we want to connect to */
if (!serv->dont_use_proxy && /* blocked in serverlist? */
prefs.proxy_host[0] &&
prefs.proxy_type > 0 &&
prefs.proxy_use != 2) /* proxy is NOT dcc-only */
{
snprintf (buf, sizeof (buf), "9\n%s\n", prefs.proxy_host);
write (serv->childwrite, buf, strlen (buf));
ip = net_resolve (ns_server, prefs.proxy_host, prefs.proxy_port,
&real_hostname);
if (!ip)
{
write (serv->childwrite, "1\n", 2);
goto xit;
}
connect_port = prefs.proxy_port;
/* if using socks4 or MS Proxy, attempt to resolve ip for irc server */
if ((prefs.proxy_type == 2) || (prefs.proxy_type == 5))
{
ns_proxy = net_store_new ();
proxy_ip = net_resolve (ns_proxy, hostname, port, &real_hostname);
if (!proxy_ip)
{
write (serv->childwrite, "1\n", 2);
goto xit;
}
} else /* otherwise we can just use the hostname */
proxy_ip = strdup (hostname);
} else
{
ip = net_resolve (ns_server, hostname, port, &real_hostname);
if (!ip)
{
write (serv->childwrite, "1\n", 2);
goto xit;
}
connect_port = port;
}
snprintf (buf, sizeof (buf), "3\n%s\n%s\n%d\n",
real_hostname, ip, connect_port);
write (serv->childwrite, buf, strlen (buf));
if (!serv->dont_use_proxy && (prefs.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)
{
snprintf (buf, sizeof (buf), "2\n%d\n", sock_error ());
write (serv->childwrite, buf, strlen (buf));
} else
{
/* connect succeeded */
if (proxy_ip)
{
switch (traverse_proxy (serv->childwrite, psok, proxy_ip, port, &serv->msp_state, ns_proxy, serv->sok4, serv->sok6, &sok, bound))
{
case 0: /* success */
#ifdef USE_MSPROXY
if (!serv->dont_use_proxy && (prefs.proxy_type == 5))
snprintf (buf, sizeof (buf), "4\n%d %d %d %d %d\n", sok, psok, serv->msp_state.clientid, serv->msp_state.serverid,
serv->msp_state.seq_sent);
else
#endif
snprintf (buf, sizeof (buf), "4\n%d\n", sok); /* success */
write (serv->childwrite, buf, strlen (buf));
break;
case 1: /* socks traversal failed */
write (serv->childwrite, "8\n", 2);
break;
}
} else
{
snprintf (buf, sizeof (buf), "4\n%d\n", sok); /* success */
write (serv->childwrite, buf, strlen (buf));
}
}
xit:
#if defined (USE_IPV6) || defined (WIN32)
/* this is probably not needed */
net_store_destroy (ns_server);
if (ns_proxy)
net_store_destroy (ns_proxy);
#endif
/* no need to free ip/real_hostname, this process is exiting */
#ifdef WIN32
/* under win32 we use a thread -> shared memory, must free! */
if (proxy_ip)
free (proxy_ip);
if (ip)
free (ip);
if (real_hostname)
free (real_hostname);
#endif
return 0;
}
static void
server_connect (server *serv, char *hostname, int port, int no_login)
{
int pid, read_des[2];
session *sess = serv->server_session;
#ifdef USE_OPENSSL
if (!ctx && serv->use_ssl)
{
if (!(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 = 9999;
#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[256];
/* first try network specific cert/key */
snprintf (cert_file, sizeof (cert_file), "%s/%s.pem",
get_xdir_fs (), server_get_network (serv, TRUE));
if (SSL_CTX_use_certificate_file (ctx, cert_file, SSL_FILETYPE_PEM) == 1)
SSL_CTX_use_PrivateKey_file (ctx, cert_file, SSL_FILETYPE_PEM);
else
{
/* if that doesn't exist, try ~/.xchat2/client.pem */
snprintf (cert_file, sizeof (cert_file), "%s/%s.pem",
get_xdir_fs (), "client");
if (SSL_CTX_use_certificate_file (ctx, cert_file, SSL_FILETYPE_PEM) == 1)
SSL_CTX_use_PrivateKey_file (ctx, cert_file, SSL_FILETYPE_PEM);
}
}
#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);
#ifdef WIN32
if (_pipe (read_des, 4096, _O_BINARY) < 0)
#else
if (pipe (read_des) < 0)
#endif
return;
#ifdef __EMX__ /* os/2 */
setmode (read_des[0], O_BINARY);
setmode (read_des[1], O_BINARY);
#endif
serv->childread = read_des[0];
serv->childwrite = read_des[1];
/* create both sockets now, drop one later */
net_sockets (&serv->sok4, &serv->sok6);
#ifdef USE_MSPROXY
/* In case of MS Proxy we have a separate UDP control connection */
if (!serv->dont_use_proxy && (prefs.proxy_type == 5))
udp_sockets (&serv->proxy_sok4, &serv->proxy_sok6);
else
#endif
{
serv->proxy_sok4 = -1;
serv->proxy_sok6 = -1;
}
#ifdef WIN32
CloseHandle (CreateThread (NULL, 0,
(LPTHREAD_START_ROUTINE)server_child,
serv, 0, (DWORD *)&pid));
#else
#ifdef LOOKUPD
rand(); /* CL: net_resolve calls rand() when LOOKUPD is set, so prepare a different seed for each child. This method giver a bigger variation in seed values than calling srand(time(0)) in the child itself. */
#endif
switch (pid = fork ())
{
case -1:
return;
case 0:
/* this is the child */
setuid (getuid ());
server_child (serv);
_exit (0);
}
#endif
serv->childpid = pid;
serv->iotag = fe_input_add (serv->childread, FIA_READ, server_read_child,
serv);
}
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)
{
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 = 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 (!strcasecmp (serv->encoding, "CP1255") ||
!strcasecmp (serv->encoding, "WINDOWS-1255"))
serv->using_cp1255 = TRUE;
else if (!strcasecmp (serv->encoding, "IRC"))
serv->using_irc = TRUE;
}
}
server *
server_new (void)
{
static int id = 0;
server *serv;
serv = malloc (sizeof (struct server));
memset (serv, 0, sizeof (struct server));
/* use server.c and proto-irc.c functions */
server_fill_her_up (serv);
serv->id = id++;
serv->sok = -1;
strcpy (serv->nick, prefs.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)
{
if (serv->chantypes)
free (serv->chantypes);
if (serv->chanmodes)
free (serv->chanmodes);
if (serv->nick_prefixes)
free (serv->nick_prefixes);
if (serv->nick_modes)
free (serv->nick_modes);
serv->chantypes = strdup ("#&!+");
serv->chanmodes = strdup ("beI,k,l");
serv->nick_prefixes = strdup ("@%+");
serv->nick_modes = strdup ("ohv");
serv->nickcount = 1;
serv->nickservtype = 1;
serv->end_of_motd = FALSE;
serv->is_away = FALSE;
serv->supports_watch = FALSE;
serv->bad_prefix = FALSE;
serv->use_who = TRUE;
serv->have_namesx = FALSE;
serv->have_uhnames = FALSE;
serv->have_whox = FALSE;
serv->have_capab = FALSE;
serv->have_idmsg = FALSE;
serv->have_except = FALSE;
}
char *
server_get_network (server *serv, gboolean fallback)
{
if (serv->network)
return ((ircnet *)serv->network)->name;
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);
if (away->message)
free (away->message);
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 */
{
if (away->message)
free (away->message);
away->message = strdup (msg);
} else
/* Create brand new entry */
{
away = malloc (sizeof (struct away_msg));
if (away)
{
away->server = serv;
safe_strcpy (away->nick, nick, sizeof (away->nick));
away->message = 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);
free (serv->nick_modes);
free (serv->nick_prefixes);
free (serv->chanmodes);
free (serv->chantypes);
if (serv->bad_nick_prefixes)
free (serv->bad_nick_prefixes);
if (serv->last_away_reason)
free (serv->last_away_reason);
if (serv->encoding)
free (serv->encoding);
if (serv->autojoin)
free (serv->autojoin);
fe_server_callback (serv);
free (serv);
notify_cleanup ();
}
