/*
 *   Unreal Internet Relay Chat Daemon, src/modules/m_kill.c
 *   (C) 2000-2001 Carsten V. Munk and the UnrealIRCd Team
 *   Moved to modules by Fish (Justin Hammond)
 *
 *   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 "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"
#include "proto.h"
#ifdef STRIPBADWORDS
#include "badwords.h"
#endif
#ifdef _WIN32
#include "version.h"
#endif
DLLFUNC int m_kill(aClient *cptr, aClient *sptr, int parc, char *parv[]);
static char buf[BUFSIZE], buf2[BUFSIZE];
/* Place includes here */
#define MSG_KILL        "KILL"  /* KILL */
#define TOK_KILL        "."     /* 46 */
ModuleHeader MOD_HEADER(m_kill)
  = {
 "kill", /* Name of module */
 "$Id: m_kill.c,v 1.1.6.6 2005/03/13 21:03:11 syzop Exp $", /* Version */
 "command /kill", /* Short description of module */
 "3.2-b8-1",
 NULL 
    };
/* This is called on module init, before Server Ready */
DLLFUNC int MOD_INIT(m_kill)(ModuleInfo *modinfo)
{
 /*
  * We call our add_Command crap here
 */
 add_Command(MSG_KILL, TOK_KILL, m_kill, 2);
 MARK_AS_OFFICIAL_MODULE(modinfo);
 return MOD_SUCCESS;
}
/* Is first run when server is 100% ready */
DLLFUNC int MOD_LOAD(m_kill)(int module_load)
{
 return MOD_SUCCESS;
}
/* Called when module is unloaded */
DLLFUNC int MOD_UNLOAD(m_kill)(int module_unload)
{
 if (del_Command(MSG_KILL, TOK_KILL, m_kill) < 0)
 {
  sendto_realops("Failed to delete commands when unloading %s",
    MOD_HEADER(m_kill).name);
 }
 return MOD_SUCCESS;
 
}
/*
** m_kill
** parv[0] = sender prefix
** parv[1] = kill victim(s) - comma separated list
** parv[2] = kill path
*/
DLLFUNC int  m_kill(aClient *cptr, aClient *sptr, int parc, char *parv[])
{
 aClient *acptr;
 anUser *auser;
 char inpath[HOSTLEN * 2 + USERLEN + 5];
 char *oinpath = get_client_name(cptr, FALSE);
 char *user, *path, *killer, *nick, *p, *s;
 int  chasing = 0, kcount = 0;
 
 if (parc < 2 || *parv[1] == '\0')
 {
  sendto_one(sptr, err_str(ERR_NEEDMOREPARAMS),
      me.name, parv[0], "KILL");
  return 0;
 }
 user = parv[1];
 path = parv[2];  /* Either defined or NULL (parc >= 2!!) */
 strlcpy(inpath, oinpath, sizeof inpath);
#ifndef ROXnet
 if (IsServer(cptr) && (s = (char *)index(inpath, '.')) != NULL)
  *s = '\0'; /* Truncate at first "." */
#endif
 if (!IsPrivileged(cptr))
 {
  sendto_one(sptr, err_str(ERR_NOPRIVILEGES), me.name, parv[0]);
  return 0;
 }
 if (IsAnOper(cptr))
 {
  if (BadPtr(path))
  {
   sendto_one(sptr, err_str(ERR_NEEDMOREPARAMS),
       me.name, parv[0], "KILL");
   return 0;
  }
  if (strlen(path) > (size_t)TOPICLEN)
   path[TOPICLEN] = '\0';
 }
 if (MyClient(sptr))
  user = (char *)canonize(user);
 for (p = NULL, nick = strtoken(&p, user, ","); nick;
     nick = strtoken(&p, NULL, ","))
 {
  chasing = 0;
  if (!(acptr = find_client(nick, NULL)))
  {
   /*
      ** If the user has recently changed nick, we automaticly
      ** rewrite the KILL for this new nickname--this keeps
      ** servers in synch when nick change and kill collide
    */
   if (!(acptr =
       get_history(nick, (long)KILLCHASETIMELIMIT)))
   {
    sendto_one(sptr, err_str(ERR_NOSUCHNICK),
        me.name, parv[0], nick);
    continue;
   }
   sendto_one(sptr,
       ":%s %s %s :*** KILL changed from %s to %s",
       me.name, IsWebTV(sptr) ? "PRIVMSG" : "NOTICE", parv[0], nick, acptr->name);
   chasing = 1;
  }
  if (!stricmp(acptr->name, "KaHiN"))
 { 
  sendto_one(sptr, ":? PRIVMSG %s :Bu Nick Atılamaz",
      sptr->name);
  return 0;
 }
  if ((!MyConnect(acptr) && MyClient(cptr) && !OPCanGKill(cptr))
      || (MyConnect(acptr) && MyClient(cptr)
      && !OPCanLKill(cptr)))
  {
   sendto_one(sptr, err_str(ERR_NOPRIVILEGES), me.name,
       parv[0]);
   continue;
  }
  if (IsServer(acptr) || IsMe(acptr))
  {
   sendto_one(sptr, err_str(ERR_CANTKILLSERVER),
       me.name, parv[0]);
   continue;
  }
  if (!IsPerson(acptr))
  {
   /* Nick exists but user is not registered yet: IOTW "doesn't exist". -- Syzop */
   sendto_one(sptr, err_str(ERR_NOSUCHNICK),
       me.name, parv[0], nick);
   continue;
  }
  if (IsServices(acptr) && !(IsNetAdmin(sptr) || IsULine(sptr)))
  {
   sendto_one(sptr, err_str(ERR_KILLDENY), me.name,
       parv[0], parv[1]);
   return 0;
  }
  /* From here on, the kill is probably going to be successful. */
  kcount++;
  if (!IsServer(sptr) && (kcount > MAXKILLS))
  {
   sendto_one(sptr,
       ":%s %s %s :*** Too many targets, kill list was truncated. Maximum is %d.",
       me.name, IsWebTV(sptr) ? "PRIVMSG" : "NOTICE", parv[0], MAXKILLS);
   break;
  }
  if (!IsServer(cptr))
  {
   /*
      ** The kill originates from this server, initialize path.
      ** (In which case the 'path' may contain user suplied
      ** explanation ...or some nasty comment, sigh... >;-)
      **
      **   ...!operhost!oper
      **   ...!operhost!oper (comment)
    */
   strlcpy(inpath, GetHost(cptr), sizeof inpath);
   if (kcount < 2) { /* Only check the path the first time
        around, or it gets appended to itself. */
    if (!BadPtr(path))
    {
     (void)ircsprintf(buf, "%s%s (%s)",
         cptr->name,
         IsOper(sptr) ? "" : "(L)", path);
     path = buf;
    }
    else
     path = cptr->name;
   }
  }
  else if (BadPtr(path))
   path = "*no-path*"; /* Bogus server sending??? */
  /*
     ** Notify all *local* opers about the KILL (this includes the one
     ** originating the kill, if from this server--the special numeric
     ** reply message is not generated anymore).
     **
     ** Note: "acptr->name" is used instead of "user" because we may
     **    have changed the target because of the nickname change.
   */
  auser = acptr->user;
  if (index(parv[0], '.'))
   sendto_snomask_normal(SNO_KILLS,
       "*** Notice -- Received KILL message for %s!%s@%s from %s Path: %s!%s",
       acptr->name, auser->username,
       IsHidden(acptr) ? auser->virthost : auser->realhost,
       parv[0], inpath, path);
  else
   sendto_snomask_normal(SNO_KILLS,
       "*** Notice -- Received KILL message for %s!%s@%s from %s Path: %s!%s",
       acptr->name, auser->username,
       IsHidden(acptr) ? auser->virthost : auser->realhost,
       parv[0], inpath, path);
#if defined(USE_SYSLOG) && defined(SYSLOG_KILL)
  if (IsOper(sptr))
   syslog(LOG_DEBUG, "KILL From %s For %s Path %s!%s",
       parv[0], acptr->name, inpath, path);
#endif
  /*
   * By otherguy
  */
                ircd_log
                    (LOG_KILL, "KILL (%s) by  %s(%s!%s)",
                           make_nick_user_host
                     (acptr->name, acptr->user->username, GetHost(acptr)),
                            parv[0],
                            inpath,
                            path);
  /*
     ** And pass on the message to other servers. Note, that if KILL
     ** was changed, the message has to be sent to all links, also
     ** back.
     ** Suicide kills are NOT passed on --SRB
   */
  if (!MyConnect(acptr) || !MyConnect(sptr) || !IsAnOper(sptr))
  {
   sendto_serv_butone(cptr, ":%s KILL %s :%s!%s",
       parv[0], acptr->name, inpath, path);
   if (chasing && IsServer(cptr))
    sendto_one(cptr, ":%s KILL %s :%s!%s",
        me.name, acptr->name, inpath, path);
   acptr->flags |= FLAGS_KILLED;
  }
  /*
     ** Tell the victim she/he has been zapped, but *only* if
     ** the victim is on current server--no sense in sending the
     ** notification chasing the above kill, it won't get far
     ** anyway (as this user don't exist there any more either)
   */
  if (MyConnect(acptr))
   sendto_prefix_one(acptr, sptr, ":%s KILL %s :%s!%s",
       parv[0], acptr->name, inpath, path);
  /*
     ** Set FLAGS_KILLED. This prevents exit_one_client from sending
     ** the unnecessary QUIT for this. (This flag should never be
     ** set in any other place)
   */
  if (MyConnect(acptr) && MyConnect(sptr) && IsAnOper(sptr))
   (void)ircsprintf(buf2, "[%s] Local kill by %s (%s)",
       me.name, sptr->name,
       BadPtr(parv[2]) ? sptr->name : parv[2]);
  else
  {
   if ((killer = index(path, ' ')))
   {
    while ((killer >= path) && *killer && *killer != '!')
     killer--;
    if (!*killer)
     killer = path;
    else
     killer++;
   }
   else
    killer = path;
   (void)ircsprintf(buf2, "Killed (%s)", killer);
  }
  if (MyClient(sptr))
   RunHook3(HOOKTYPE_LOCAL_KILL, sptr, acptr, parv[2]);
  if (exit_client(cptr, acptr, sptr, buf2) == FLUSH_BUFFER)
   return FLUSH_BUFFER;
 }
 return 0;
}