hexchat/src/common/server.c at master · programcoder/hexchat · GitHub

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/* X-Chat

* 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

* based on Dante source code

#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

#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

/* 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, GIConv write_converter, char *buf, int len)

{

int ret;

gsize buf_encoded_len;

gchar *buf_encoded = text_convert_invalid (buf, len, write_converter, "?", &buf_encoded_len);

#ifdef USE_OPENSSL

if (!ssl)

ret = send (sok, buf_encoded, buf_encoded_len, 0);

else

ret = _SSL_send (ssl, buf_encoded, buf_encoded_len);

#else

ret = send (sok, buf_encoded, buf_encoded_len, 0);

#endif

g_free (buf_encoded);

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->write_converter, 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;

}

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)

{

gsize len_utf8;

line = text_convert_invalid (line, len, serv->read_converter, unicode_fallback_string, &len_utf8);

fe_add_rawlog (serv, line, len_utf8, FALSE);

/* let proto-irc.c handle it */

serv->p_inline (serv, line, len_utf8);

g_free (line);

}

/* 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;

}

#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 = g_new (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 */

/* 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);

}

/* 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];

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);

if (serv->sok6 != -1)

closesocket (serv->sok6);

if (serv->proxy_sok6 != -1)

closesocket (serv->proxy_sok6);

EMIT_SIGNAL (XP_TE_UKNHOST, sess, NULL, NULL, NULL, NULL, 0);

if (!servlist_cycle (serv))

if (prefs.hex_net_auto_reconnectonfail)

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);

if (serv->sok6 != -1)

closesocket (serv->sok6);

if (serv->proxy_sok6 != -1)

closesocket (serv->proxy_sok6);

EMIT_SIGNAL (XP_TE_CONNFAIL, sess, errorstring (atoi (tbuf)), NULL,

NULL, NULL, 0);

if (!servlist_cycle (serv))

if (prefs.hex_net_auto_reconnectonfail)

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);

break;

case '4': /* success */

waitline2 (source, tbuf, sizeof (tbuf));

serv->sok = atoi (tbuf);

/* 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);

}

{

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 (outbuf, sizeof (outbuf), "IDENTD %"G_GUINT16_FORMAT" ", port);

if (serv->network && ((ircnet *)serv->network)->user)

g_strlcat (outbuf, ((ircnet *)serv->network)->user, sizeof (outbuf));

else

g_strlcat (outbuf, prefs.hex_irc_user_name, sizeof (outbuf));

handle_command (serv->server_session, outbuf, FALSE);

}

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.hex_net_bind_host) failed */

sprintf (outbuf,

_("Cannot resolve hostname %s\nCheck your IP Settings!\n"),

prefs.hex_net_bind_host);

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);

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;

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! */

View remainder of file in raw view

hexchat/src/common/server.c at master · programcoder/hexchat · GitHub

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