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/* |
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* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd). |
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* m_webirc.c: Makes CGI:IRC users appear as coming from their real host |
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* |
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* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center |
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* Copyright (C) 2002-2006 ircd-ratbox development team |
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* Copyright (C) 1996-2012 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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* $Id$ |
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*/ |
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|
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#include "stdinc.h" |
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#include "list.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 "send.h" |
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#include "irc_string.h" |
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#include "hash.h" |
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#include "parse.h" |
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#include "modules.h" |
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#include "conf.h" |
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#include "hostmask.h" |
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|
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/* |
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* Usage: |
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* |
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* auth { |
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* user = "webirc@<cgiirc ip>"; # if identd used, put ident username instead |
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* password = "<password>"; # encryption possible |
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* spoof = "webirc." |
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* class = "users"; |
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* encrypted = yes; # [Using encryption is highly recommended] |
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* }; |
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* |
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* Possible flags: |
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* kline_exempt - k/g lines on the cgiirc ip are ignored |
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* gline_exempt - glines on the cgiirc ip are ignored |
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* |
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* dlines are checked on the cgiirc ip (of course). |
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* k/d/g/x lines, auth blocks, user limits, etc are checked using the |
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* real host/ip. |
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* |
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* The password should be specified unencrypted in webirc_password in |
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* cgiirc.config |
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*/ |
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|
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static int |
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invalid_hostname(const char *hostname) |
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{ |
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const char *p = hostname; |
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unsigned int has_sep = 0; |
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|
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assert(p != NULL); |
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|
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if (*p == '.' || *p == ':') |
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return 1; |
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|
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for (; *p; ++p) |
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{ |
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if (!IsHostChar(*p)) |
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return 1; |
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if (*p == '.' || *p == ':') |
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++has_sep; |
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} |
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|
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return !has_sep; |
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} |
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|
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/* |
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* mr_webirc |
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* parv[0] = sender prefix |
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* parv[1] = password |
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* parv[2] = fake username (we ignore this) |
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* parv[3] = fake hostname |
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* parv[4] = fake ip |
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*/ |
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static void |
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mr_webirc(struct Client *client_p, struct Client *source_p, int parc, char *parv[]) |
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{ |
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struct AccessItem *aconf = NULL; |
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struct ConfItem *conf = NULL; |
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struct addrinfo hints, *res; |
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|
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assert(source_p == client_p); |
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|
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if (invalid_hostname(parv[4])) |
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{ |
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sendto_one(source_p, ":%s NOTICE %s :CGI:IRC: Invalid IP", me.name, |
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source_p->name[0] ? source_p->name : "*"); |
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return; |
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} |
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|
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aconf = find_address_conf(source_p->host, |
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IsGotId(source_p) ? source_p->username : "webirc", |
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&source_p->localClient->ip, |
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source_p->localClient->aftype, parv[1]); |
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if (aconf == NULL || !IsConfClient(aconf)) |
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return; |
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|
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conf = unmap_conf_item(aconf); |
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|
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if (!IsConfDoSpoofIp(aconf) || irccmp(conf->name, "webirc.")) |
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{ |
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sendto_one(source_p, ":%s NOTICE %s :Not a CGI:IRC auth block", me.name, |
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source_p->name[0] ? source_p->name : "*"); |
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return; |
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} |
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|
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if (EmptyString(aconf->passwd)) |
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{ |
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sendto_one(source_p, ":%s NOTICE %s :CGI:IRC auth blocks must have a password", |
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me.name, source_p->name[0] ? source_p->name : "*"); |
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return; |
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} |
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|
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if (!match_conf_password(parv[1], aconf)) |
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{ |
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sendto_one(source_p, ":%s NOTICE %s :CGI:IRC password incorrect", |
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me.name, source_p->name[0] ? source_p->name : "*"); |
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return; |
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} |
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|
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memset(&hints, 0, sizeof(hints)); |
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|
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hints.ai_family = AF_UNSPEC; |
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hints.ai_socktype = SOCK_STREAM; |
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hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST; |
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|
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if (getaddrinfo(parv[4], NULL, &hints, &res)) |
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{ |
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|
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sendto_one(source_p, ":%s NOTICE %s :Invalid CGI:IRC IP %s", me.name, |
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source_p->name[0] ? source_p->name : "*", parv[4]); |
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return; |
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} |
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|
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assert(res != NULL); |
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|
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memcpy(&source_p->localClient->ip, res->ai_addr, res->ai_addrlen); |
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source_p->localClient->ip.ss_len = res->ai_addrlen; |
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source_p->localClient->ip.ss.ss_family = res->ai_family; |
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source_p->localClient->aftype = res->ai_family; |
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freeaddrinfo(res); |
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|
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strlcpy(source_p->sockhost, parv[4], sizeof(source_p->sockhost)); |
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|
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if (strlen(parv[3]) <= HOSTLEN) |
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strlcpy(source_p->host, parv[3], sizeof(source_p->host)); |
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else |
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strlcpy(source_p->host, source_p->sockhost, sizeof(source_p->host)); |
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|
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/* Check dlines now, k/glines will be checked on registration */ |
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if ((aconf = find_dline_conf(&client_p->localClient->ip, |
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client_p->localClient->aftype))) |
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{ |
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if (!(aconf->status & CONF_EXEMPTDLINE)) |
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{ |
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exit_client(client_p, &me, "D-lined"); |
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return; |
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} |
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} |
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|
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sendto_one(source_p, ":%s NOTICE %s :CGI:IRC host/IP set to %s %s", me.name, |
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source_p->name[0] ? source_p->name : "*", parv[3], parv[4]); |
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} |
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|
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static struct Message webirc_msgtab = { |
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"WEBIRC", 0, 0, 5, 0, MFLG_SLOW, 0, |
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{ mr_webirc, m_ignore, m_ignore, m_ignore, m_ignore, 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(&webirc_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(&webirc_msgtab); |
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} |
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|
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struct module module_entry = { |
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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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}; |
