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fd3057a462aa46ecbbd9ecbac02dc331e31a59b2
unrealircd/src/modules/m_kick.c
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Bram Matthys fd3057a462 goto deny; continue; hmmmmm
2015-07-25 18:25:41 +02:00

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/*
* IRC - Internet Relay Chat, src/modules/m_kick.c
* (C) 2004 The UnrealIRCd Team
*
* See file AUTHORS in IRC package for additional names of
* the programmers.
*
* 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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "config.h"
#include "struct.h"
#include "common.h"
#include "sys.h"
#include "numeric.h"
#include "msg.h"
#include "proto.h"
#include "channel.h"
#include <time.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef _WIN32
#include <io.h>
#endif
#include <fcntl.h>
#include "h.h"
#ifdef _WIN32
#include "version.h"
#endif
DLLFUNC int m_kick(aClient *cptr, aClient *sptr, int parc, char *parv[]);
#define MSG_KICK "KICK"
ModuleHeader MOD_HEADER(m_kick)
= {
"m_kick",
"$Id$",
"command /kick",
"3.2-b8-1",
NULL
};
MOD_INIT(m_kick)
{
CommandAdd(modinfo->handle, MSG_KICK, m_kick, 3, M_USER|M_SERVER);
MARK_AS_OFFICIAL_MODULE(modinfo);
return MOD_SUCCESS;
}
MOD_LOAD(m_kick)
{
return MOD_SUCCESS;
}
MOD_UNLOAD(m_kick)
{
return MOD_SUCCESS;
}
/*
** m_kick
** parv[1] = channel
** parv[2] = client to kick
** parv[3] = kick comment
*/
#ifdef PREFIX_AQ
#define CHFL_ISOP (CHFL_CHANOWNER|CHFL_CHANPROT|CHFL_CHANOP)
#else
#define CHFL_ISOP (CHFL_CHANOP)
#endif
CMD_FUNC(m_kick)
{
aClient *who;
aChannel *chptr;
int chasing = 0;
char *comment, *name, *p = NULL, *user, *p2 = NULL, *badkick;
Membership *lp;
Hook *h;
int i = 0;
int ret;
if (parc < 3 || *parv[1] == '\0')
{
sendto_one(sptr, err_str(ERR_NEEDMOREPARAMS),
me.name, sptr->name, "KICK");
return 0;
}
comment = (BadPtr(parv[3])) ? sptr->name : parv[3];
if (strlen(comment) > (size_t)TOPICLEN)
comment[TOPICLEN] = '\0';
for (; (name = strtoken(&p, parv[1], ",")); parv[1] = NULL)
{
long sptr_flags = 0;
chptr = get_channel(sptr, name, !CREATE);
if (!chptr)
{
sendto_one(sptr, err_str(ERR_NOSUCHCHANNEL),
me.name, sptr->name, name);
continue;
}
/* Store "sptr" access flags */
if (IsPerson(sptr))
sptr_flags = get_access(sptr, chptr);
if (!IsServer(cptr) && !IsULine(sptr) && !op_can_override("override:kick",sptr,chptr,NULL)
&& !(sptr_flags & CHFL_ISOP) && !(sptr_flags & CHFL_HALFOP))
{
sendto_one(sptr, err_str(ERR_CHANOPRIVSNEEDED),
me.name, sptr->name, chptr->chname);
continue;
}
for (; (user = strtoken(&p2, parv[2], ",")); parv[2] = NULL)
{
long who_flags;
if (!(who = find_chasing(sptr, user, &chasing)))
continue; /* No such user left! */
if (!who->user)
continue;
if ((lp = find_membership_link(who->user->channel, chptr)))
{
if (IsULine(sptr) || IsServer(sptr))
goto attack;
/* Note for coders regarding oper override:
* always let a remote kick (=from a user on another server) through or
* else we will get desynched. In short this means all the denying should
* always contain a && MyClient(sptr) [or sptr!=cptr] and at the end
* a remote kick should always be allowed (pass through). -- Syzop
*/
/* Store "who" access flags */
who_flags = get_access(who, chptr);
badkick = NULL;
ret = EX_ALLOW;
for (h = Hooks[HOOKTYPE_CAN_KICK]; h; h = h->next) {
int n = (*(h->func.intfunc))(sptr, who, chptr, comment, sptr_flags, who_flags, &badkick);
if (n == EX_DENY)
ret = n;
else if (n == EX_ALWAYS_DENY)
{
ret = n;
break;
}
}
if (ret == EX_ALWAYS_DENY)
{
if (MyClient(sptr) && badkick)
sendto_one(sptr, "%s", badkick); /* send error, if any */
if (MyClient(sptr))
continue; /* reject the kick (note: we never block remote kicks) */
}
if (ret == EX_DENY)
{
/* If set it means 'not allowed to kick'.. now check if (s)he can override that.. */
if (op_can_override("override:kick",sptr,chptr,NULL))
{
sendto_snomask(SNO_EYES,
"*** OperOverride -- %s (%s@%s) KICK %s %s (%s)",
sptr->name, sptr->user->username, sptr->user->realhost,
chptr->chname, who->name, comment);
ircd_log(LOG_OVERRIDE,"OVERRIDE: %s (%s@%s) KICK %s %s (%s)",
sptr->name, sptr->user->username, sptr->user->realhost,
chptr->chname, who->name, comment);
goto attack; /* all other checks don't matter anymore (and could cause double msgs) */
} else {
/* Not an oper overriding */
if (MyClient(sptr) && badkick)
sendto_one(sptr, "%s", badkick); /* send error, if any */
continue; /* reject the kick */
}
}
/* we are neither +o nor +h, OR..
* we are +h but victim is +o, OR...
* we are +h and victim is +h
*/
if (op_can_override("override:kick",sptr,chptr,NULL))
{
if ((!(sptr_flags & CHFL_ISOP) && !(sptr_flags & CHFL_HALFOP)) ||
((sptr_flags & CHFL_HALFOP) && (who_flags & CHFL_ISOP)) ||
((sptr_flags & CHFL_HALFOP) && (who_flags & CHFL_HALFOP)))
{
sendto_snomask(SNO_EYES,
"*** OperOverride -- %s (%s@%s) KICK %s %s (%s)",
sptr->name, sptr->user->username, sptr->user->realhost,
chptr->chname, who->name, comment);
/* Logging Implementation added by XeRXeS */
ircd_log(LOG_OVERRIDE,"OVERRIDE: %s (%s@%s) KICK %s %s (%s)",
sptr->name, sptr->user->username, sptr->user->realhost,
chptr->chname, who->name, comment);
goto attack;
} /* is_chan_op */
}
/* victim is +a or +q, we are not +q */
if ((who_flags & (CHFL_CHANOWNER|CHFL_CHANPROT))
&& !(sptr_flags & CHFL_CHANOWNER)) {
if (sptr == who)
goto attack; /* kicking self == ok */
if (op_can_override("override:kick:owner",sptr,chptr,NULL)) /* (and f*ck local ops) */
{ /* IRCop kicking owner/prot */
sendto_snomask(SNO_EYES,
"*** OperOverride -- %s (%s@%s) KICK %s %s (%s)",
sptr->name, sptr->user->username, sptr->user->realhost,
chptr->chname, who->name, comment);
/* Logging Implementation added by XeRXeS */
ircd_log(LOG_OVERRIDE,"OVERRIDE: %s (%s@%s) KICK %s %s (%s)",
sptr->name, sptr->user->username, sptr->user->realhost,
chptr->chname, who->name, comment);
goto attack;
}
else if (!IsULine(sptr) && (who != sptr) && MyClient(sptr))
{
char errbuf[NICKLEN+25];
if (who_flags & CHFL_CHANOWNER)
ircsnprintf(errbuf, sizeof(errbuf), "%s is a channel owner",
who->name);
else
ircsnprintf(errbuf, sizeof(errbuf), "%s is a channel admin",
who->name);
sendto_one(sptr, err_str(ERR_CANNOTDOCOMMAND),
me.name, sptr->name, "KICK",
errbuf);
goto deny;
} /* chanprot/chanowner */
}
/* victim is +o, we are +h [operoverride is already taken care of 2 blocks above] */
if ((who_flags & CHFL_ISOP) && (sptr_flags & CHFL_HALFOP)
&& !(sptr_flags & CHFL_ISOP) && !IsULine(sptr) && MyClient(sptr))
{
char errbuf[NICKLEN+30];
ircsnprintf(errbuf, sizeof(errbuf), "%s is a channel operator", who->name);
sendto_one(sptr, err_str(ERR_CANNOTDOCOMMAND),
me.name, sptr->name, "KICK",
errbuf);
goto deny;
}
/* victim is +h, we are +h [operoverride is already taken care of 3 blocks above] */
if ((who_flags & CHFL_HALFOP) && (sptr_flags & CHFL_HALFOP)
&& !(sptr_flags & CHFL_ISOP) && MyClient(sptr))
{
char errbuf[NICKLEN+15];
ircsnprintf(errbuf, sizeof(errbuf), "%s is a halfop", who->name);
sendto_one(sptr, err_str(ERR_CANNOTDOCOMMAND),
me.name, sptr->name, "KICK",
errbuf);
goto deny;
} /* halfop */
/* allowed (either coz access granted or a remote kick), so attack! */
goto attack;
deny:
continue;
attack:
if (MyConnect(sptr)) {
int breakit = 0;
Hook *h;
for (h = Hooks[HOOKTYPE_PRE_LOCAL_KICK]; h; h = h->next) {
if((*(h->func.intfunc))(sptr,who,chptr,comment) > 0) {
breakit = 1;
break;
}
}
if (breakit)
continue;
RunHook5(HOOKTYPE_LOCAL_KICK, cptr,sptr,who,chptr,comment);
} else {
RunHook5(HOOKTYPE_REMOTE_KICK, cptr, sptr, who, chptr, comment);
}
if (lp)
{
for (h = Hooks[HOOKTYPE_VISIBLE_IN_CHANNEL]; h; h = h->next)
{
i = (*(h->func.intfunc))(sptr,chptr);
if (i != 0)
break;
}
if ((i != 0) &&
!(lp->flags & (CHFL_CHANOP|CHFL_CHANPROT|CHFL_CHANOWNER|CHFL_HALFOP|CHFL_VOICE)))
{
/* Send it only to chanops & victim */
if (IsPerson(sptr))
sendto_chanops_butone(who, chptr, ":%s!%s@%s KICK %s %s :%s",
sptr->name, sptr->user->username, GetHost(sptr),
chptr->chname, who->name, comment);
else
sendto_chanops_butone(who, chptr, ":%s KICK %s %s :%s",
sptr->name, chptr->chname, who->name, comment);
if (MyClient(who))
sendto_prefix_one(who, sptr, ":%s KICK %s %s :%s",
sptr->name, chptr->chname, who->name, comment);
} else {
/* NORMAL */
sendto_channel_butserv(chptr,
sptr, ":%s KICK %s %s :%s",
sptr->name, chptr->chname, who->name, comment);
}
}
sendto_server(cptr, PROTO_SID, 0, ":%s KICK %s %s :%s",
ID(sptr), chptr->chname, ID(who), comment);
sendto_server(cptr, 0, PROTO_SID, ":%s KICK %s %s :%s",
sptr->name, chptr->chname, who->name, comment);
if (lp)
{
remove_user_from_channel(who, chptr);
}
}
else if (MyClient(sptr))
sendto_one(sptr,
err_str(ERR_USERNOTINCHANNEL),
me.name, sptr->name, user, name);
if (MyClient(cptr))
break;
} /* loop on parv[2] */
if (MyClient(cptr))
break;
} /* loop on parv[1] */
return 0;
}
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