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m_webirc.c
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m_webirc.c
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/*
* ircd-ratbox: A slightly useful ircd.
* m_webirc.c: Makes CGI:IRC users appear as coming from their real host
*
* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
* Copyright (C) 1996-2002 Hybrid Development Team
* Copyright (C) 2002-2006 ircd-ratbox development team
*
* 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
*/
/* Usage:
* auth {
* user = "webirc@<cgiirc ip>"; # if identd used, put ident username instead
* password = "<password>"; # encryption possible
* spoof = "webirc."
* class = "users";
* };
* Possible flags:
* encrypted - password is encrypted (recommended)
* kline_exempt - klines on the cgiirc ip are ignored
* dlines are checked on the cgiirc ip (of course).
* k/d/x lines, auth blocks, user limits, etc are checked using the
* real host/ip.
* The password should be specified unencrypted in webirc_password in
* cgiirc.config
*/
#include "stdinc.h"
#include "client.h" /* client struct */
#include "match.h"
#include "hostmask.h"
#include "send.h" /* sendto_one */
#include "numeric.h" /* ERR_xxx */
#include "ircd.h" /* me */
#include "msg.h"
#include "parse.h"
#include "modules.h"
#include "s_serv.h"
#include "hash.h"
#include "s_conf.h"
#include "reject.h"
static const char webirc_desc[] = "Adds support for the WebIRC system";
static void mr_webirc(struct MsgBuf *msgbuf_p, struct Client *, struct Client *, int, const char **);
struct Message webirc_msgtab = {
"WEBIRC", 0, 0, 0, 0,
{{mr_webirc, 5}, mg_reg, mg_ignore, mg_ignore, mg_ignore, mg_reg}
};
mapi_clist_av1 webirc_clist[] = { &webirc_msgtab, NULL };
static void new_local_user(void *data);
mapi_hfn_list_av1 webirc_hfnlist[] = {
/* unintuitive but correct--we want to be called first */
{ "new_local_user", (hookfn) new_local_user, HOOK_LOWEST },
{ NULL, NULL }
};
DECLARE_MODULE_AV2(webirc, NULL, NULL, webirc_clist, NULL, webirc_hfnlist, NULL, NULL, webirc_desc);
/*
* mr_webirc - webirc message handler
* parv[1] = password
* parv[2] = fake username (we ignore this)
* parv[3] = fake hostname
* parv[4] = fake ip
*/
static void
mr_webirc(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
struct ConfItem *aconf;
const char *encr;
struct rb_sockaddr_storage addr;
int secure = 0;
aconf = find_address_conf(client_p->host, client_p->sockhost,
IsGotId(client_p) ? client_p->username : "webirc",
IsGotId(client_p) ? client_p->username : "webirc",
(struct sockaddr *) &client_p->localClient->ip,
GET_SS_FAMILY(&client_p->localClient->ip), NULL);
if (aconf == NULL || !(aconf->status & CONF_CLIENT))
return;
if (!IsConfDoSpoofIp(aconf) || irccmp(aconf->info.name, "webirc."))
{
/* XXX */
sendto_one(source_p, "NOTICE * :Not a CGI:IRC auth block");
return;
}
if (EmptyString(aconf->passwd))
{
sendto_one(source_p, "NOTICE * :CGI:IRC auth blocks must have a password");
return;
}
if (!IsSSL(source_p) && aconf->flags & CONF_FLAGS_NEED_SSL)
{
sendto_one(source_p, "NOTICE * :Your CGI:IRC block requires TLS");
return;
}
if (EmptyString(parv[1]))
encr = "";
else if (IsConfEncrypted(aconf))
encr = rb_crypt(parv[1], aconf->passwd);
else
encr = parv[1];
if (encr == NULL || strcmp(encr, aconf->passwd))
{
sendto_one(source_p, "NOTICE * :CGI:IRC password incorrect");
return;
}
if (rb_inet_pton_sock(parv[4], &addr) <= 0)
{
sendto_one(source_p, "NOTICE * :Invalid IP");
return;
}
source_p->localClient->ip = addr;
if (parc >= 6)
{
const char *s;
for (s = parv[5]; s != NULL; (s = strchr(s, ' ')) && s++)
{
if (!ircncmp(s, "secure", 6) && (s[6] == '=' || s[6] == ' ' || s[6] == '\0'))
secure = 1;
}
}
if (secure && !IsSSL(source_p))
{
sendto_one(source_p, "NOTICE * :CGI:IRC is not connected securely; marking you as insecure");
secure = 0;
}
if (!secure)
{
SetInsecure(source_p);
}
rb_inet_ntop_sock((struct sockaddr *)&source_p->localClient->ip, source_p->sockhost, sizeof(source_p->sockhost));
if(strlen(parv[3]) <= HOSTLEN)
rb_strlcpy(source_p->host, parv[3], sizeof(source_p->host));
else
rb_strlcpy(source_p->host, source_p->sockhost, sizeof(source_p->host));
/* Check dlines now, klines will be checked on registration */
if((aconf = find_dline((struct sockaddr *)&source_p->localClient->ip,
GET_SS_FAMILY(&source_p->localClient->ip))))
{
if(!(aconf->status & CONF_EXEMPTDLINE))
{
exit_client(client_p, source_p, &me, "D-lined");
return;
}
}
sendto_one(source_p, "NOTICE * :CGI:IRC host/IP set to %s %s", parv[3], parv[4]);
}
static void
new_local_user(void *data)
{
struct Client *source_p = data;
struct ConfItem *aconf = source_p->localClient->att_conf;
if (!irccmp(aconf->info.name, "webirc."))
exit_client(source_p, source_p, &me, "Cannot log in using a WEBIRC block");
}