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/* |
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* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd) |
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* |
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* Copyright (c) 1997-2014 ircd-hybrid development team |
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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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|
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/*! \file m_connect.c |
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* \brief Includes required functions for processing the CONNECT command. |
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* \version $Id$ |
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*/ |
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|
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#include "stdinc.h" |
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#include "client.h" |
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#include "ircd.h" |
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#include "irc_string.h" |
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#include "numeric.h" |
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#include "fdlist.h" |
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#include "s_bsd.h" |
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#include "conf.h" |
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#include "log.h" |
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#include "s_serv.h" |
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#include "send.h" |
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#include "parse.h" |
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#include "hash.h" |
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#include "modules.h" |
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|
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|
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/*! \brief CONNECT command handler |
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* |
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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] = command |
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* - parv[1] = target server |
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* - parv[2] = port number |
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* - parv[3] = nickname/servername |
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*/ |
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static int |
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mo_connect(struct Client *source_p, int parc, char *parv[]) |
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{ |
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int port; |
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int tmpport; |
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struct MaskItem *conf = NULL; |
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const struct Client *target_p = NULL; |
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|
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if (EmptyString(parv[1])) |
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{ |
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sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "CONNECT"); |
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return 0; |
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} |
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|
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if (parc > 3) |
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{ |
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if (!HasOFlag(source_p, OPER_FLAG_CONNECT_REMOTE)) |
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{ |
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sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "connect:remote"); |
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return 0; |
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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 0; |
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} |
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else if (!HasOFlag(source_p, OPER_FLAG_CONNECT)) |
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{ |
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sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "connect"); |
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return 0; |
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} |
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|
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if ((target_p = hash_find_server(parv[1]))) |
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{ |
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sendto_one_notice(source_p, &me, ":Connect: Server %s already exists from %s.", |
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parv[1], target_p->from->name); |
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return 0; |
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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(CONF_SERVER, parv[1], NULL, NULL, 0))) |
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{ |
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if (!(conf = find_matching_name_conf(CONF_SERVER, NULL, NULL, parv[1], 0))) |
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{ |
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sendto_one_notice(source_p, &me, ":Connect: Host %s not listed in ircd.conf", parv[1]); |
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return 0; |
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} |
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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 form configuration structure. If missing |
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* from there, then use the precompiled default. |
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*/ |
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tmpport = port = conf->port; |
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|
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if (parc > 2 && !EmptyString(parv[2])) |
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{ |
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if ((port = atoi(parv[2])) <= 0) |
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{ |
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sendto_one_notice(source_p, &me, ":Connect: Illegal port number"); |
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return 0; |
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} |
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} |
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else if (port <= 0 && (port = PORTNUM) <= 0) |
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{ |
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sendto_one_notice(source_p, &me, ":Connect: missing port number"); |
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return 0; |
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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_notice(source_p, &me, ":Connect: a connection to %s " |
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"is already in progress.", conf->name); |
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return 0; |
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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(LOG_TYPE_IRCD, "CONNECT From %s : %s %s", |
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source_p->name, parv[1], parv[2] ? parv[2] : ""); |
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|
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conf->port = 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{} block and a valid port in the connect{} block |
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*/ |
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if (serv_connect(conf, source_p)) |
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{ |
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if (!ConfigServerHide.hide_server_ips && HasUMode(source_p, UMODE_ADMIN)) |
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sendto_one_notice(source_p, &me, ":*** Connecting to %s[%s].%d", |
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conf->host, conf->name, conf->port); |
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else |
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sendto_one_notice(source_p, &me, ":*** Connecting to %s.%d", |
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conf->name, conf->port); |
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} |
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else |
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sendto_one_notice(source_p, &me, ":*** Couldn't connect to %s.%d", |
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conf->name, conf->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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conf->port = tmpport; |
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return 0; |
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} |
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|
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/*! \brief CONNECT command handler |
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* |
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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] = command |
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* - parv[1] = target server |
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* - parv[2] = port number |
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* - parv[3] = nickname/servername |
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*/ |
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static int |
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ms_connect(struct Client *source_p, int parc, char *parv[]) |
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{ |
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int port; |
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int tmpport; |
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struct MaskItem *conf = NULL; |
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const struct Client *target_p = NULL; |
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|
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if (hunt_server(source_p, ":%s CONNECT %s %s :%s", |
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3, parc, parv) != HUNTED_ISME) |
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return 0; |
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|
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if (EmptyString(parv[1])) |
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{ |
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sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "CONNECT"); |
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return 0; |
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} |
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|
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if ((target_p = hash_find_server(parv[1]))) |
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{ |
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sendto_one_notice(source_p, &me, ":Connect: Server %s already exists from %s.", |
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parv[1], target_p->from->name); |
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return 0; |
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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(CONF_SERVER, parv[1], NULL, NULL, 0))) |
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{ |
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if (!(conf = find_matching_name_conf(CONF_SERVER, NULL, NULL, parv[1], 0))) |
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{ |
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sendto_one_notice(source_p, &me, ":Connect: Host %s not listed in ircd.conf", parv[1]); |
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return 0; |
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} |
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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 form configuration structure. If missing |
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* from there, then use the precompiled default. |
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*/ |
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tmpport = port = conf->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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/* |
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* If someone sends port 0, and we have a config port.. use it |
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*/ |
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if (port == 0 && conf->port) |
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port = conf->port; |
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else if (port <= 0) |
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{ |
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sendto_one_notice(source_p, &me, ":Connect: Illegal port number"); |
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return 0; |
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} |
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} |
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else if (port <= 0 && (port = PORTNUM) <= 0) |
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{ |
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sendto_one_notice(source_p, &me, ":Connect: missing port number"); |
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return 0; |
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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_notice(source_p, &me, ":Connect: a connection to %s " |
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"is already in progress.", conf->name); |
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return 0; |
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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, NOCAPS, NOCAPS, |
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":%s WALLOPS :Remote CONNECT %s %d from %s", |
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me.id, parv[1], port, source_p->name); |
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|
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ilog(LOG_TYPE_IRCD, "CONNECT From %s : %s %d", |
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source_p->name, parv[1], port); |
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|
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conf->port = 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{} block and a valid port in the connect{} block |
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*/ |
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if (serv_connect(conf, source_p)) |
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sendto_one_notice(source_p, &me, ":*** Connecting to %s.%d", |
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conf->name, conf->port); |
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else |
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sendto_one_notice(source_p, &me, ":*** Couldn't connect to %s.%d", |
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conf->name, conf->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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conf->port = tmpport; |
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return 0; |
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} |
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|
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static struct Message connect_msgtab = |
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{ |
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"CONNECT", 0, 0, 2, MAXPARA, 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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static void |
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module_init(void) |
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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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static void |
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module_exit(void) |
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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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struct module module_entry = |
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{ |
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.node = { NULL, NULL, NULL }, |
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.name = NULL, |
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.version = "$Revision$", |
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.handle = NULL, |
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.modinit = module_init, |
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.modexit = module_exit, |
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.flags = 0 |
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}; |
