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construct/modules/m_resv.c
Jilles Tjoelker c2c25552ca Force part local users (not resv_exempt) on channel resv.
A notice will be sent to any force parted users that the channel
is temporarily/permanently unavailable on the server.
A new config option channel::resv_forcepart can be used to disable this.

from ircd-ratbox (dubkat)
2009-09-19 21:24:35 +02:00

693 lines
16 KiB
C

/*
* ircd-ratbox: A slightly useful ircd.
* m_resv.c: Reserves(jupes) a nickname or channel.
*
* Copyright (C) 2001-2002 Hybrid Development Team
* Copyright (C) 2002-2005 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
*
* $Id: m_resv.c 3045 2006-12-26 23:16:57Z jilles $
*/
#include "stdinc.h"
#include "client.h"
#include "channel.h"
#include "ircd.h"
#include "numeric.h"
#include "s_serv.h"
#include "send.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
#include "s_conf.h"
#include "s_newconf.h"
#include "hash.h"
#include "logger.h"
static int mo_resv(struct Client *, struct Client *, int, const char **);
static int ms_resv(struct Client *, struct Client *, int, const char **);
static int me_resv(struct Client *, struct Client *, int, const char **);
static int mo_unresv(struct Client *, struct Client *, int, const char **);
static int ms_unresv(struct Client *, struct Client *, int, const char **);
static int me_unresv(struct Client *, struct Client *, int, const char **);
struct Message resv_msgtab = {
"RESV", 0, 0, 0, MFLG_SLOW | MFLG_UNREG,
{mg_ignore, mg_not_oper, {ms_resv, 4}, {ms_resv, 4}, {me_resv, 5}, {mo_resv, 3}}
};
struct Message unresv_msgtab = {
"UNRESV", 0, 0, 0, MFLG_SLOW | MFLG_UNREG,
{mg_ignore, mg_not_oper, {ms_unresv, 3}, {ms_unresv, 3}, {me_unresv, 2}, {mo_unresv, 2}}
};
mapi_clist_av1 resv_clist[] = { &resv_msgtab, &unresv_msgtab, NULL };
DECLARE_MODULE_AV1(resv, NULL, NULL, resv_clist, NULL, NULL, "$Revision: 3045 $");
static void parse_resv(struct Client *source_p, const char *name,
const char *reason, int temp_time);
static void propagate_resv(struct Client *source_p, const char *target,
int temp_time, const char *name, const char *reason);
static void cluster_resv(struct Client *source_p, int temp_time,
const char *name, const char *reason);
static void handle_remote_unresv(struct Client *source_p, const char *name);
static void remove_resv(struct Client *source_p, const char *name);
static int remove_resv_from_file(struct Client *source_p, const char *name);
static void resv_chan_forcepart(const char *name, const char *reason, int temp_time);
/*
* mo_resv()
* parv[1] = channel/nick to forbid
* parv[2] = reason
*/
static int
mo_resv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
const char *name;
const char *reason;
const char *target_server = NULL;
int temp_time;
int loc = 1;
if(!IsOperResv(source_p))
{
sendto_one(source_p, form_str(ERR_NOPRIVS),
me.name, source_p->name, "resv");
return 0;
}
/* RESV [time] <name> [ON <server>] :<reason> */
if((temp_time = valid_temp_time(parv[loc])) >= 0)
loc++;
/* we just set temp_time to -1! */
else
temp_time = 0;
name = parv[loc];
loc++;
if((parc >= loc+2) && (irccmp(parv[loc], "ON") == 0))
{
if(!IsOperRemoteBan(source_p))
{
sendto_one(source_p, form_str(ERR_NOPRIVS),
me.name, source_p->name, "remoteban");
return 0;
}
target_server = parv[loc+1];
loc += 2;
}
if(parc <= loc || EmptyString(parv[loc]))
{
sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
me.name, source_p->name, "RESV");
return 0;
}
reason = parv[loc];
/* remote resv.. */
if(target_server)
{
propagate_resv(source_p, target_server, temp_time, name, reason);
if(match(target_server, me.name) == 0)
return 0;
}
else if(rb_dlink_list_length(&cluster_conf_list) > 0)
cluster_resv(source_p, temp_time, name, reason);
parse_resv(source_p, name, reason, temp_time);
return 0;
}
/* ms_resv()
* parv[1] = target server
* parv[2] = channel/nick to forbid
* parv[3] = reason
*/
static int
ms_resv(struct Client *client_p, struct Client *source_p,
int parc, const char *parv[])
{
/* source_p parv[1] parv[2] parv[3]
* oper target server resv reason
*/
propagate_resv(source_p, parv[1], 0, parv[2], parv[3]);
if(!match(parv[1], me.name))
return 0;
if(!IsPerson(source_p))
return 0;
parse_resv(source_p, parv[2], parv[3], 0);
return 0;
}
static int
me_resv(struct Client *client_p, struct Client *source_p,
int parc, const char *parv[])
{
/* time name 0 :reason */
if(!IsPerson(source_p))
return 0;
parse_resv(source_p, parv[2], parv[4], atoi(parv[1]));
return 0;
}
/* parse_resv()
*
* inputs - source_p if error messages wanted
* - thing to resv
* - reason for resv
* outputs -
* side effects - will parse the resv and create it if valid
*/
static void
parse_resv(struct Client *source_p, const char *name,
const char *reason, int temp_time)
{
struct ConfItem *aconf;
if(!MyClient(source_p) &&
!find_shared_conf(source_p->username, source_p->host,
source_p->servptr->name,
(temp_time > 0) ? SHARED_TRESV : SHARED_PRESV))
return;
if(IsChannelName(name))
{
if(hash_find_resv(name))
{
sendto_one_notice(source_p,
":A RESV has already been placed on channel: %s",
name);
return;
}
if(strlen(name) > CHANNELLEN)
{
sendto_one_notice(source_p, ":Invalid RESV length: %s",
name);
return;
}
if(strchr(name, ','))
{
sendto_one_notice(source_p,
":Invalid character ',' in channel RESV");
return;
}
if(strchr(reason, '"'))
{
sendto_one_notice(source_p,
":Invalid character '\"' in comment");
return;
}
aconf = make_conf();
aconf->status = CONF_RESV_CHANNEL;
aconf->port = 0;
aconf->name = rb_strdup(name);
aconf->passwd = rb_strdup(reason);
add_to_resv_hash(aconf->name, aconf);
resv_chan_forcepart(aconf->name, aconf->passwd, temp_time);
if(temp_time > 0)
{
aconf->hold = rb_current_time() + temp_time;
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"%s added temporary %d min. RESV for [%s] [%s]",
get_oper_name(source_p), temp_time / 60,
name, reason);
ilog(L_KLINE, "R %s %d %s %s",
get_oper_name(source_p), temp_time / 60,
name, reason);
sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
temp_time / 60, name);
}
else
write_confitem(RESV_TYPE, source_p, NULL, aconf->name,
aconf->passwd, NULL, NULL, 0);
}
else if(clean_resv_nick(name))
{
if(strlen(name) > NICKLEN*2)
{
sendto_one_notice(source_p, ":Invalid RESV length: %s",
name);
return;
}
if(strchr(reason, '"'))
{
sendto_one_notice(source_p,
":Invalid character '\"' in comment");
return;
}
if(!valid_wild_card_simple(name))
{
sendto_one_notice(source_p,
":Please include at least %d non-wildcard "
"characters with the resv",
ConfigFileEntry.min_nonwildcard_simple);
return;
}
if(find_nick_resv_mask(name))
{
sendto_one_notice(source_p,
":A RESV has already been placed on nick: %s",
name);
return;
}
aconf = make_conf();
aconf->status = CONF_RESV_NICK;
aconf->port = 0;
aconf->name = rb_strdup(name);
aconf->passwd = rb_strdup(reason);
rb_dlinkAddAlloc(aconf, &resv_conf_list);
if(temp_time > 0)
{
aconf->hold = rb_current_time() + temp_time;
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"%s added temporary %d min. RESV for [%s] [%s]",
get_oper_name(source_p), temp_time / 60,
name, reason);
ilog(L_KLINE, "R %s %d %s %s",
get_oper_name(source_p), temp_time / 60,
name, reason);
sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
temp_time / 60, name);
}
else
write_confitem(RESV_TYPE, source_p, NULL, aconf->name,
aconf->passwd, NULL, NULL, 0);
}
else
sendto_one_notice(source_p,
":You have specified an invalid resv: [%s]",
name);
}
static void
propagate_resv(struct Client *source_p, const char *target,
int temp_time, const char *name, const char *reason)
{
if(!temp_time)
{
sendto_match_servs(source_p, target,
CAP_CLUSTER, NOCAPS,
"RESV %s %s :%s",
target, name, reason);
sendto_match_servs(source_p, target,
CAP_ENCAP, CAP_CLUSTER,
"ENCAP %s RESV %d %s 0 :%s",
target, temp_time, name, reason);
}
else
sendto_match_servs(source_p, target,
CAP_ENCAP, NOCAPS,
"ENCAP %s RESV %d %s 0 :%s",
target, temp_time, name, reason);
}
static void
cluster_resv(struct Client *source_p, int temp_time, const char *name,
const char *reason)
{
struct remote_conf *shared_p;
rb_dlink_node *ptr;
RB_DLINK_FOREACH(ptr, cluster_conf_list.head)
{
shared_p = ptr->data;
/* old protocol cant handle temps, and we dont really want
* to convert them to perm.. --fl
*/
if(!temp_time)
{
if(!(shared_p->flags & SHARED_PRESV))
continue;
sendto_match_servs(source_p, shared_p->server,
CAP_CLUSTER, NOCAPS,
"RESV %s %s :%s",
shared_p->server, name, reason);
sendto_match_servs(source_p, shared_p->server,
CAP_ENCAP, CAP_CLUSTER,
"ENCAP %s RESV 0 %s 0 :%s",
shared_p->server, name, reason);
}
else if(shared_p->flags & SHARED_TRESV)
sendto_match_servs(source_p, shared_p->server,
CAP_ENCAP, NOCAPS,
"ENCAP %s RESV %d %s 0 :%s",
shared_p->server, temp_time, name, reason);
}
}
/*
* mo_unresv()
* parv[1] = channel/nick to unforbid
*/
static int
mo_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
if(!IsOperResv(source_p))
{
sendto_one(source_p, form_str(ERR_NOPRIVS),
me.name, source_p->name, "resv");
return 0;
}
if((parc == 4) && (irccmp(parv[2], "ON") == 0))
{
if(!IsOperRemoteBan(source_p))
{
sendto_one(source_p, form_str(ERR_NOPRIVS),
me.name, source_p->name, "remoteban");
return 0;
}
propagate_generic(source_p, "UNRESV", parv[3], CAP_CLUSTER,
"%s", parv[1]);
if(match(parv[3], me.name) == 0)
return 0;
}
else if(rb_dlink_list_length(&cluster_conf_list) > 0)
cluster_generic(source_p, "UNRESV", SHARED_UNRESV, CAP_CLUSTER,
"%s", parv[1]);
remove_resv(source_p, parv[1]);
return 0;
}
/* ms_unresv()
* parv[1] = target server
* parv[2] = resv to remove
*/
static int
ms_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
/* source_p parv[1] parv[2]
* oper target server resv to remove
*/
propagate_generic(source_p, "UNRESV", parv[1], CAP_CLUSTER,
"%s", parv[2]);
if(!match(parv[1], me.name))
return 0;
if(!IsPerson(source_p))
return 0;
handle_remote_unresv(source_p, parv[2]);
return 0;
}
static int
me_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
/* name */
if(!IsPerson(source_p))
return 0;
handle_remote_unresv(source_p, parv[1]);
return 0;
}
static void
handle_remote_unresv(struct Client *source_p, const char *name)
{
if(!find_shared_conf(source_p->username, source_p->host,
source_p->servptr->name, SHARED_UNRESV))
return;
remove_resv(source_p, name);
return;
}
static void
remove_resv(struct Client *source_p, const char *name)
{
struct ConfItem *aconf = NULL;
if(IsChannelName(name))
{
if((aconf = hash_find_resv(name)) == NULL)
{
sendto_one_notice(source_p, ":No RESV for %s", name);
return;
}
if(!aconf->hold)
{
if (!remove_resv_from_file(source_p, name))
return;
}
else
{
sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"%s has removed the RESV for: [%s]",
get_oper_name(source_p), name);
ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
}
del_from_resv_hash(name, aconf);
}
else
{
rb_dlink_node *ptr;
RB_DLINK_FOREACH(ptr, resv_conf_list.head)
{
aconf = ptr->data;
if(irccmp(aconf->name, name))
aconf = NULL;
else
break;
}
if(aconf == NULL)
{
sendto_one_notice(source_p, ":No RESV for %s", name);
return;
}
if(!aconf->hold)
{
if (!remove_resv_from_file(source_p, name))
return;
}
else
{
sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"%s has removed the RESV for: [%s]",
get_oper_name(source_p), name);
ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
}
/* already have ptr from the loop above.. */
rb_dlinkDestroy(ptr, &resv_conf_list);
}
free_conf(aconf);
return;
}
/* remove_resv_from_file()
*
* inputs - client removing the resv
* - resv to remove
* outputs -
* side effects - resv if found, is removed from conf
* - does not touch resv hash or resv_conf_list
*/
static int
remove_resv_from_file(struct Client *source_p, const char *name)
{
FILE *in, *out;
char buf[BUFSIZE];
char buff[BUFSIZE];
char temppath[BUFSIZE];
const char *filename;
mode_t oldumask;
char *p;
int error_on_write = 0;
int found_resv = 0;
rb_sprintf(temppath, "%s.tmp", ConfigFileEntry.resvfile);
filename = get_conf_name(RESV_TYPE);
if((in = fopen(filename, "r")) == NULL)
{
sendto_one_notice(source_p, ":Cannot open %s", filename);
return 0;
}
oldumask = umask(0);
if((out = fopen(temppath, "w")) == NULL)
{
sendto_one_notice(source_p, ":Cannot open %s", temppath);
fclose(in);
umask(oldumask);
return 0;
}
umask(oldumask);
while (fgets(buf, sizeof(buf), in))
{
const char *resv_name;
if(error_on_write)
{
if(temppath != NULL)
(void) unlink(temppath);
break;
}
rb_strlcpy(buff, buf, sizeof(buff));
if((p = strchr(buff, '\n')) != NULL)
*p = '\0';
if((*buff == '\0') || (*buff == '#'))
{
error_on_write = (fputs(buf, out) < 0) ? YES : NO;
continue;
}
if((resv_name = getfield(buff)) == NULL)
{
error_on_write = (fputs(buf, out) < 0) ? YES : NO;
continue;
}
if(irccmp(resv_name, name) == 0)
{
found_resv++;
}
else
{
error_on_write = (fputs(buf, out) < 0) ? YES : NO;
}
}
fclose(in);
if (fclose(out))
error_on_write = YES;
if(error_on_write)
{
sendto_one_notice(source_p, ":Couldn't write temp resv file, aborted");
return 0;
}
else if(!found_resv)
{
sendto_one_notice(source_p, ":Cannot find RESV for %s in file", name);
if(temppath != NULL)
(void) unlink(temppath);
return 0;
}
if (rename(temppath, filename))
{
sendto_one_notice(source_p, ":Couldn't rename temp file, aborted");
return 0;
}
sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"%s has removed the RESV for: [%s]", get_oper_name(source_p), name);
ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
return 1;
}
static void
resv_chan_forcepart(const char *name, const char *reason, int temp_time)
{
rb_dlink_node *ptr;
rb_dlink_node *next_ptr;
struct Channel *chptr;
struct membership *msptr;
struct Client *target_p;
if(!ConfigChannel.resv_forcepart)
return;
/* for each user on our server in the channel list
* send them a PART, and notify opers.
*/
chptr = find_channel(name);
if(chptr != NULL)
{
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->locmembers.head)
{
msptr = ptr->data;
target_p = msptr->client_p;
if(IsExemptResv(target_p))
continue;
sendto_server(target_p, chptr, CAP_TS6, NOCAPS,
":%s PART %s", target_p->id, chptr->chname);
sendto_channel_local(ALL_MEMBERS, chptr, ":%s!%s@%s PART %s :%s",
target_p->name, target_p->username,
target_p->host, chptr->chname, target_p->name);
remove_user_from_channel(msptr);
/* notify opers & user they were removed from the channel */
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"Forced PART for %s!%s@%s from %s (%s)",
target_p->name, target_p->username,
target_p->host, name, reason);
if(temp_time > 0)
sendto_one_notice(target_p, ":*** Channel %s is temporarily unavailable on this server.",
name);
else
sendto_one_notice(target_p, ":*** Channel %s is no longer available on this server.",
name);
}
}
}