angiosperm/modules/m_invite.c
2021-06-05 15:57:03 +01:00

266 lines
6.9 KiB
C

/*
* ircd-ratbox: A slightly useful ircd.
* m_invite.c: Invites the user to join a channel.
*
* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
* Copyright (C) 1996-2002 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
*/
#include "stdinc.h"
#include "channel.h"
#include "client.h"
#include "hash.h"
#include "match.h"
#include "ircd.h"
#include "numeric.h"
#include "send.h"
#include "s_conf.h"
#include "s_serv.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
#include "packet.h"
#include "tgchange.h"
#include "s_newconf.h"
static const char invite_desc[] = "Provides /invite";
static void m_invite(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
struct Message invite_msgtab = {
"INVITE", 0, 0, 0, 0,
{mg_unreg, {m_invite, 3}, {m_invite, 3}, mg_ignore, mg_ignore, {m_invite, 3}}
};
static int can_invite_hook;
static int invite_hook;
mapi_clist_av1 invite_clist[] = { &invite_msgtab, NULL };
mapi_hlist_av1 invite_hlist[] = {
{ "can_invite", &can_invite_hook },
{ "invite", &invite_hook },
{ NULL, NULL }
};
DECLARE_MODULE_AV2(invite, NULL, NULL, invite_clist, invite_hlist, NULL, NULL, NULL, invite_desc);
static bool add_invite(struct Channel *, struct Client *);
/* m_invite()
* parv[1] - user to invite
* parv[2] - channel name
*/
static void
m_invite(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
struct Client *target_p;
struct Channel *chptr;
struct membership *msptr;
int store_invite = 0;
hook_data_channel_approval hdata = { 0 };
if(MyClient(source_p) && !IsFloodDone(source_p))
flood_endgrace(source_p);
if(MyClient(source_p))
target_p = find_named_person(parv[1]);
else
target_p = find_person(parv[1]);
if(target_p == NULL)
{
if(!MyClient(source_p) && IsDigit(parv[1][0]))
sendto_one_numeric(source_p, ERR_NOSUCHNICK,
"* :Target left IRC. Failed to invite to %s",
parv[2]);
else
sendto_one_numeric(source_p, ERR_NOSUCHNICK,
form_str(ERR_NOSUCHNICK),
parv[1]);
return;
}
if(check_channel_name(parv[2]) == 0)
{
sendto_one_numeric(source_p, ERR_BADCHANNAME,
form_str(ERR_BADCHANNAME),
parv[2]);
return;
}
/* Do not send local channel invites to users if they are not on the
* same server as the person sending the INVITE message.
*/
if(parv[2][0] == '&' && !MyConnect(target_p))
{
sendto_one(source_p, form_str(ERR_USERNOTONSERV),
me.name, source_p->name, target_p->name);
return;
}
if(((MyConnect(source_p) && !IsExemptResv(source_p)) ||
(MyConnect(target_p) && !IsExemptResv(target_p))) &&
hash_find_resv(parv[2]))
{
sendto_one_numeric(source_p, ERR_BADCHANNAME,
form_str(ERR_BADCHANNAME),
parv[2]);
return;
}
if((chptr = find_channel(parv[2])) == NULL)
{
sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
form_str(ERR_NOSUCHCHANNEL), parv[2]);
return;
}
msptr = find_channel_membership(chptr, source_p);
if(MyClient(source_p) && (msptr == NULL))
{
sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
form_str(ERR_NOTONCHANNEL), parv[2]);
return;
}
if(IsMember(target_p, chptr))
{
sendto_one_numeric(source_p, ERR_USERONCHANNEL,
form_str(ERR_USERONCHANNEL),
target_p->name, parv[2]);
return;
}
if (MyClient(source_p))
{
hdata.chptr = chptr;
hdata.msptr = msptr;
hdata.client = source_p;
hdata.target = target_p;
hdata.approved = !(is_chanop(msptr) || (chptr->mode.mode & MODE_FREEINVITE));
call_hook(can_invite_hook, &hdata);
if (hdata.approved)
{
if (hdata.error)
sendto_one_numeric(source_p, hdata.approved, "%s", hdata.error);
else
sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
me.name, source_p->name, parv[2]);
return;
}
}
/* store invites when they could affect the ability to join
* for +l/+j just check if the mode is set, this varies over time
*/
if(chptr->mode.mode & MODE_INVITEONLY ||
(chptr->mode.mode & MODE_REGONLY && EmptyString(target_p->user->suser)) ||
chptr->mode.limit || chptr->mode.join_num)
store_invite = 1;
if(MyConnect(source_p))
{
if (ConfigFileEntry.target_change && !IsOperGeneral(source_p) &&
!find_allowing_channel(source_p, target_p) &&
!add_target(source_p, target_p))
{
sendto_one(source_p, form_str(ERR_TARGCHANGE),
me.name, source_p->name, target_p->name);
return;
}
sendto_one(source_p, form_str(RPL_INVITING),
me.name, source_p->name,
target_p->name, parv[2]);
if(target_p->user->away)
sendto_one_numeric(source_p, RPL_AWAY, form_str(RPL_AWAY),
target_p->name, target_p->user->away);
}
/* invite timestamp */
else if(parc > 3 && !EmptyString(parv[3]))
{
/* this should never be less than */
if(atol(parv[3]) > chptr->channelts)
return;
}
if(MyConnect(target_p))
{
hdata.chptr = chptr;
hdata.msptr = msptr;
hdata.client = source_p;
hdata.target = target_p;
hdata.approved = 0;
call_hook(invite_hook, &hdata);
if (hdata.approved)
{
if (hdata.error)
sendto_one_numeric(source_p, hdata.approved, "%s", hdata.error);
return;
}
add_reply_target(target_p, source_p);
sendto_anywhere(target_p, source_p, "INVITE", ":%s", chptr->chname);
if(store_invite)
add_invite(chptr, target_p);
}
else if (target_p->from != client_p)
{
sendto_one_prefix(target_p, source_p, "INVITE", "%s %lu",
chptr->chname, (unsigned long) chptr->channelts);
}
}
/* add_invite()
*
* input - channel to add invite to, client to add
* output - true if it is a new invite, else false
* side effects - client is added to invite list.
*/
static bool
add_invite(struct Channel *chptr, struct Client *who)
{
rb_dlink_node *ptr;
/* already invited? */
RB_DLINK_FOREACH(ptr, who->user->invited.head)
{
if(ptr->data == chptr)
return false;
}
/* ok, if their invite list is too long, remove the tail */
if((int)rb_dlink_list_length(&who->user->invited) >=
ConfigChannel.max_chans_per_user)
{
ptr = who->user->invited.tail;
del_invite(ptr->data, who);
}
/* add user to channel invite list */
rb_dlinkAddAlloc(who, &chptr->invites);
/* add channel to user invite list */
rb_dlinkAddAlloc(chptr, &who->user->invited);
return true;
}