elemental-ircd/modules/m_services.c

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/* modules/m_services.c
* Copyright (C) 2005 Lee Hardy <lee -at- leeh.co.uk>
* Copyright (C) 2005 ircd-ratbox development team
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1.Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2.Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3.The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* $Id: m_services.c 1907 2006-08-29 19:18:15Z jilles $
*/
#include "stdinc.h"
#include "send.h"
#include "channel.h"
#include "client.h"
#include "common.h"
#include "config.h"
#include "ircd.h"
#include "numeric.h"
#include "s_conf.h"
#include "s_newconf.h"
#include "s_serv.h"
#include "hash.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
#include "whowas.h"
#include "monitor.h"
static int me_su(struct Client *, struct Client *, int, const char **);
static int me_login(struct Client *, struct Client *, int, const char **);
static int me_rsfnc(struct Client *, struct Client *, int, const char **);
static int me_nickdelay(struct Client *, struct Client *, int, const char **);
static void h_svc_server_introduced(hook_data_client *);
static void h_svc_whois(hook_data_client *);
static void h_svc_stats(hook_data_int *);
struct Message su_msgtab = {
"SU", 0, 0, 0, MFLG_SLOW,
{mg_ignore, mg_ignore, mg_ignore, mg_ignore, {me_su, 2}, mg_ignore}
};
struct Message login_msgtab = {
"LOGIN", 0, 0, 0, MFLG_SLOW,
{mg_ignore, mg_ignore, mg_ignore, mg_ignore, {me_login, 2}, mg_ignore}
};
struct Message rsfnc_msgtab = {
"RSFNC", 0, 0, 0, MFLG_SLOW,
{mg_ignore, mg_ignore, mg_ignore, mg_ignore, {me_rsfnc, 4}, mg_ignore}
};
struct Message nickdelay_msgtab = {
"NICKDELAY", 0, 0, 0, MFLG_SLOW,
{mg_unreg, mg_ignore, mg_ignore, mg_ignore, {me_nickdelay, 3}, mg_ignore}
};
mapi_clist_av1 services_clist[] = {
&su_msgtab, &login_msgtab, &rsfnc_msgtab, &nickdelay_msgtab, NULL
};
mapi_hfn_list_av1 services_hfnlist[] = {
{ "doing_stats", (hookfn) h_svc_stats },
{ "doing_whois", (hookfn) h_svc_whois },
{ "doing_whois_global", (hookfn) h_svc_whois },
{ "server_introduced", (hookfn) h_svc_server_introduced },
{ NULL, NULL }
};
DECLARE_MODULE_AV1(services, NULL, NULL, services_clist, NULL, services_hfnlist, "$Revision: 1907 $");
static int
me_su(struct Client *client_p, struct Client *source_p,
int parc, const char *parv[])
{
struct Client *target_p;
if(!(source_p->flags & FLAGS_SERVICE))
return 0;
if((target_p = find_client(parv[1])) == NULL)
return 0;
if(!target_p->user)
return 0;
if(EmptyString(parv[2]))
target_p->user->suser[0] = '\0';
else
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rb_strlcpy(target_p->user->suser, parv[2], sizeof(target_p->user->suser));
invalidate_bancache_user(target_p);
return 0;
}
static int
me_login(struct Client *client_p, struct Client *source_p,
int parc, const char *parv[])
{
if(!IsPerson(source_p))
return 0;
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rb_strlcpy(source_p->user->suser, parv[1], sizeof(source_p->user->suser));
return 0;
}
static int
clean_nick(const char *nick)
{
int len = 0;
if(EmptyString(nick) || *nick == '-' || IsDigit(*nick))
return 0;
for(; *nick; nick++)
{
len++;
if(!IsNickChar(*nick))
return 0;
}
if(len >= NICKLEN)
return 0;
return 1;
}
static int
me_rsfnc(struct Client *client_p, struct Client *source_p,
int parc, const char *parv[])
{
struct Client *target_p;
struct Client *exist_p;
time_t newts, curts;
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char note[NICKLEN + 10];
if(!(source_p->flags & FLAGS_SERVICE))
return 0;
if((target_p = find_person(parv[1])) == NULL)
return 0;
if(!MyClient(target_p))
return 0;
if(!clean_nick(parv[2]))
return 0;
curts = atol(parv[4]);
/* if tsinfo is different from what it was when services issued the
* RSFNC, then we ignore it. This can happen when a client changes
* nicknames before the RSFNC arrives.. --anfl
*/
if(target_p->tsinfo != curts)
return 0;
if((exist_p = find_named_client(parv[2])))
{
char buf[BUFSIZE];
/* this would be one hell of a race condition to trigger
* this one given the tsinfo check above, but its here for
* safety --anfl
*/
if(target_p == exist_p)
return 0;
if(MyClient(exist_p))
sendto_one(exist_p, ":%s KILL %s :(Nickname regained by services)",
me.name, exist_p->name);
exist_p->flags |= FLAGS_KILLED;
/* Do not send kills to servers for unknowns -- jilles */
if(IsClient(exist_p))
kill_client_serv_butone(NULL, exist_p, "%s (Nickname regained by services)",
me.name);
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rb_snprintf(buf, sizeof(buf), "Killed (%s (Nickname regained by services))",
me.name);
exit_client(NULL, exist_p, &me, buf);
}
newts = atol(parv[3]);
/* timestamp is older than 15mins, ignore it */
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if(newts < (rb_current_time() - 900))
newts = rb_current_time() - 900;
target_p->tsinfo = newts;
monitor_signoff(target_p);
invalidate_bancache_user(target_p);
sendto_realops_snomask(SNO_NCHANGE, L_ALL,
"Nick change: From %s to %s [%s@%s]",
target_p->name, parv[2], target_p->username,
target_p->host);
sendto_common_channels_local(target_p, ":%s!%s@%s NICK :%s",
target_p->name, target_p->username,
target_p->host, parv[2]);
add_history(target_p, 1);
sendto_server(NULL, NULL, CAP_TS6, NOCAPS, ":%s NICK %s :%ld",
use_id(target_p), parv[2], (long) target_p->tsinfo);
del_from_client_hash(target_p->name, target_p);
strcpy(target_p->name, parv[2]);
add_to_client_hash(target_p->name, target_p);
monitor_signon(target_p);
del_all_accepts(target_p);
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rb_snprintf(note, NICKLEN + 10, "Nick: %s", target_p->name);
rb_note(target_p->localClient->F, note);
return 0;
}
/*
** me_nickdelay
** parv[0] = sender prefix
** parv[1] = duration in seconds (0 to remove)
** parv[2] = nick
*/
static int
me_nickdelay(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
int duration;
struct nd_entry *nd;
if(!(source_p->flags & FLAGS_SERVICE))
return 0;
duration = atoi(parv[1]);
if (duration <= 0)
{
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nd = irc_dictionary_retrieve(nd_dict, parv[2]);
if (nd != NULL)
free_nd_entry(nd);
}
else
{
if (duration > 86400)
duration = 86400;
add_nd_entry(parv[2]);
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nd = irc_dictionary_retrieve(nd_dict, parv[2]);
if (nd != NULL)
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nd->expire = rb_current_time() + duration;
}
return 0;
}
static void
h_svc_server_introduced(hook_data_client *hdata)
{
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rb_dlink_node *ptr;
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RB_DLINK_FOREACH(ptr, service_list.head)
{
if(!irccmp((const char *) ptr->data, hdata->target->name))
{
hdata->target->flags |= FLAGS_SERVICE;
return;
}
}
}
static void
h_svc_whois(hook_data_client *data)
{
char *p = data->target->user->suser;
if(!EmptyString(p))
{
/* Try to strip off any leading digits as this may be used to
* store both an ID number and an account name in one field.
* If only digits are present, leave as is.
*/
while(IsDigit(*p))
p++;
if(*p == '\0')
p = data->target->user->suser;
sendto_one(data->client, form_str(RPL_WHOISLOGGEDIN),
get_id(&me, data->client),
get_id(data->client, data->client),
data->target->name, p);
}
}
static void
h_svc_stats(hook_data_int *data)
{
char statchar = (char) data->arg2;
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rb_dlink_node *ptr;
if (statchar == 'U' && IsOper(data->client))
{
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RB_DLINK_FOREACH(ptr, service_list.head)
{
sendto_one_numeric(data->client, RPL_STATSULINE,
form_str(RPL_STATSULINE),
ptr->data, "*", "*", "s");
}
}
}