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/* |
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* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd). |
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* m_connect.c: Connects to a remote IRC server. |
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* |
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* Copyright (C) 2002 by the past and present ircd coders, and others. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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* USA |
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* |
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* $Id$ |
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*/ |
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|
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#include "stdinc.h" |
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#include "handlers.h" |
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#include "client.h" |
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#include "ircd.h" |
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#include "numeric.h" |
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#include "s_conf.h" |
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#include "s_serv.h" |
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#include "send.h" |
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#include "msg.h" |
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#include "parse.h" |
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#include "hash.h" |
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#include "conf/modules.h" |
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|
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static void mo_connect(struct Client *, struct Client *, int, char *[]); |
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static void ms_connect(struct Client *, struct Client *, int, char *[]); |
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|
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struct Message connect_msgtab = { |
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"CONNECT", 0, 0, 2, 0, MFLG_SLOW, 0, |
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{ m_unregistered, m_not_oper, ms_connect, m_ignore, mo_connect, m_ignore } |
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}; |
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|
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INIT_MODULE(m_connect, "$Revision$") |
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{ |
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mod_add_cmd(&connect_msgtab); |
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} |
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|
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CLEANUP_MODULE |
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{ |
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mod_del_cmd(&connect_msgtab); |
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} |
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|
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/*! \brief CONNECT command handler (called for operators only) |
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* |
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* \param client_p Pointer to allocated Client struct with physical connection |
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* to this server, i.e. with an open socket connected. |
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* \param source_p Pointer to allocated Client struct from which the message |
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* originally comes from. This can be a local or remote client. |
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* \param parc Integer holding the number of supplied arguments. |
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* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL |
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* pointers. |
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* \note Valid arguments for this command are: |
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* - parv[0] = sender prefix |
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* - parv[1] = servername |
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* - parv[2] = port number |
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* - parv[3] = remote server |
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*/ |
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static void |
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mo_connect(struct Client *client_p, struct Client *source_p, |
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int parc, char *parv[]) |
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{ |
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int port = 0; |
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struct ConfItem *conf = NULL; |
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struct AccessItem *aconf = NULL; |
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struct Client *target_p = NULL; |
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|
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/* always privileged with handlers */ |
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if (MyConnect(source_p) && !IsOperRemote(source_p) && parc > 3) |
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{ |
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sendto_one(source_p, form_str(ERR_NOPRIVS), |
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me.name, source_p->name, "connect"); |
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return; |
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} |
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|
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if (hunt_server(source_p, ":%s CONNECT %s %s :%s", 3, |
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parc, parv) != HUNTED_ISME) |
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return; |
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|
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if (EmptyString(parv[1])) |
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{ |
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sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS), |
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me.name, source_p->name, "CONNECT"); |
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return; |
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} |
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|
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if ((target_p = find_server(parv[1]))) |
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{ |
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sendto_one(source_p, |
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":%s NOTICE %s :Connect: Server %s already exists from %s.", |
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me.name, source_p->name, parv[1], target_p->from->name); |
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return; |
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} |
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|
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/* |
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* Try to find the name, then host, if both fail notify ops and bail |
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*/ |
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if ((conf = find_matching_name_conf(SERVER_TYPE, |
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parv[1], NULL, NULL, 0)) != NULL) |
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aconf = &conf->conf.AccessItem; |
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else if ((conf = find_matching_name_conf(SERVER_TYPE, |
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NULL, NULL, parv[1], 0)) != NULL) |
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aconf = &conf->conf.AccessItem; |
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|
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if (conf == NULL) |
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{ |
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sendto_one(source_p, |
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":%s NOTICE %s :Connect: Host %s not listed in ircd.conf", |
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me.name, source_p->name, parv[1]); |
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return; |
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} |
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|
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/* |
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* Get port number from user, if given. If not specified, |
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* use the default from configuration structure. |
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*/ |
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port = aconf->port; |
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|
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if (parc > 2 && !EmptyString(parv[2])) |
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port = atoi(parv[2]); |
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|
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if (port <= 0 || port > 0xFFFF) |
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{ |
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sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal or missing port number", |
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me.name, source_p->name); |
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return; |
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} |
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|
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if (find_servconn_in_progress(conf->name)) |
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{ |
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sendto_one(source_p, ":%s NOTICE %s :Connect: a connection to %s " |
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"is already in progress.", me.name, source_p->name, conf->name); |
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return; |
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} |
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|
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/* |
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* Notify all operators about remote connect requests |
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*/ |
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ilog(L_TRACE, "CONNECT From %s : %s %s", |
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get_oper_name(source_p), parv[1], parv[2] ? parv[2] : ""); |
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|
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/* |
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* At this point we should be calling connect_server with a valid |
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* connect{} and a valid port in the connect{} |
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*/ |
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if (serv_connect(aconf, source_p, port)) |
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{ |
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if (!ConfigServerHide.hide_server_ips && IsAdmin(source_p)) |
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sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s[%s].%d", |
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me.name, source_p->name, aconf->host, |
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conf->name, port); |
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else |
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sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d", |
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me.name, source_p->name, conf->name, port); |
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} |
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else |
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sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d", |
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me.name, source_p->name, conf->name, port); |
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/* |
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* Client is either connecting with all the data it needs or has been |
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* destroyed |
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*/ |
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} |
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|
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/*! \brief CONNECT command handler (called for remote clients only) |
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* |
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* \param client_p Pointer to allocated Client struct with physical connection |
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* to this server, i.e. with an open socket connected. |
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* \param source_p Pointer to allocated Client struct from which the message |
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* originally comes from. This can be a local or remote client. |
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* \param parc Integer holding the number of supplied arguments. |
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* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL |
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* pointers. |
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* \note Valid arguments for this command are: |
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* - parv[0] = sender prefix |
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* - parv[1] = servername |
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* - parv[2] = port number |
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* - parv[3] = remote server |
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*/ |
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static void |
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ms_connect(struct Client *client_p, struct Client *source_p, |
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int parc, char *parv[]) |
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{ |
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int port = 0; |
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struct ConfItem *conf = NULL; |
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struct AccessItem *aconf = NULL; |
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struct Client *target_p = NULL; |
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|
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if (hunt_server(source_p, ":%s CONNECT %s %s :%s", 3, |
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parc, parv) != HUNTED_ISME) |
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return; |
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|
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if (EmptyString(parv[1])) |
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{ |
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sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS), |
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me.name, source_p->name, "CONNECT"); |
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return; |
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} |
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|
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if ((target_p = find_server(parv[1]))) |
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{ |
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sendto_one(source_p, |
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":%s NOTICE %s :Connect: Server %s already exists from %s.", |
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me.name, source_p->name, parv[1], target_p->from->name); |
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return; |
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} |
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|
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/* |
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* Try to find the name, then host, if both fail notify ops and bail |
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*/ |
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if ((conf = find_matching_name_conf(SERVER_TYPE, |
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parv[1], NULL, NULL, 0)) != NULL) |
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aconf = &conf->conf.AccessItem; |
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else if ((conf = find_matching_name_conf(SERVER_TYPE, |
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NULL, NULL, parv[1], 0)) != NULL) |
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aconf = &conf->conf.AccessItem; |
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|
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if (aconf == NULL) |
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{ |
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sendto_one(source_p, |
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":%s NOTICE %s :Connect: Host %s not listed in ircd.conf", |
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me.name, source_p->name, parv[1]); |
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return; |
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} |
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|
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assert(aconf != NULL); |
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|
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/* |
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* Get port number from user, if given. If not specified, |
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* use the default from configuration structure. |
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*/ |
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port = aconf->port; |
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|
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if (parc > 2 && !EmptyString(parv[2])) |
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{ |
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port = atoi(parv[2]); |
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|
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/* if someone sends port 0, use the config port instead */ |
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if (port == 0) |
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port = aconf->port; |
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} |
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|
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if (port <= 0 || port > 0xFFFF) |
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{ |
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sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal or missing port number", |
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me.name, source_p->name); |
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return; |
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} |
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|
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if (find_servconn_in_progress(conf->name)) |
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{ |
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sendto_one(source_p, ":%s NOTICE %s :Connect: a connection to %s " |
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"is already in progress.", me.name, source_p->name, conf->name); |
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return; |
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} |
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|
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/* |
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* Notify all operators about remote connect requests |
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*/ |
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sendto_wallops_flags(UMODE_WALLOP, &me, "Remote CONNECT %s %d from %s", |
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parv[1], port, source_p->name); |
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sendto_server(NULL, NULL, NULL, NOCAPS, NOCAPS, |
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":%s WALLOPS :Remote CONNECT %s %d from %s", |
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me.name, parv[1], port, source_p->name); |
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|
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ilog(L_TRACE, "CONNECT From %s : %s %d", |
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get_oper_name(source_p), parv[1], port); |
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|
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/* |
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* At this point we should be calling connect_server with a valid |
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* connect{} and a valid port in the connect{} |
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*/ |
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if (serv_connect(aconf, source_p, port)) |
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sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d", |
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me.name, source_p->name, conf->name, port); |
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else |
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sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d", |
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me.name, source_p->name, conf->name, port); |
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|
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/* |
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* Client is either connecting with all the data it needs or has been |
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* destroyed |
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*/ |
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} |
