ircd-hybrid/contrib/m_killhost.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  m_killhost.c: Kills a users with agree host.
 *
 *  Copyright (C) 2002 by Ilya Shtift.
 *
 *  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
 *
 *  $Id$
 *
 */

#include "stdinc.h"
#include "handlers.h"
#include "client.h"
#include "common.h"
#include "hash.h"
#include "ircd.h"
#include "numeric.h"
#include "s_log.h"
#include "s_serv.h"
#include "s_conf.h"
#include "send.h"
#include "whowas.h"
#include "irc_string.h"
#include "sprintf_irc.h"
#include "msg.h"
#include "parse.h"
#include "channel_mode.h"    /* needed only for split_nuh() */
#include "modules.h"

static void mo_killhost(struct Client *, struct Client *, int, char *[]);
static void kh_relay_kill(struct Client *, struct Client *, struct Client *,
                          const char *, const char *);

struct Message killhost_msgtab = {
  "KILLHOST", 0, 0, 2, 0, MFLG_SLOW, 0,
  { m_unregistered, m_ignore, m_ignore, m_ignore, mo_killhost, m_ignore }
};

#ifndef STATIC_MODULES
void
_modinit(void)
{
  mod_add_cmd(&killhost_msgtab);
}

void
_moddeinit(void)
{
  mod_del_cmd(&killhost_msgtab);
}

const char *_version = "$Revision$";
#endif

/* mo_killhost()
 * Created May 5, 2003
 * common (Ilya Shtift) ishtift@tagil.svrw.ru
 *
 *      parv[0] = sender prefix
 *      parv[1] = host
 *      parv[2] = reason
 */
static void
mo_killhost(struct Client *client_p, struct Client *source_p,
            int parc, char *parv[])
{
  dlink_node *ptr = NULL, *ptr_next = NULL;
  struct Client *target_p = NULL;
  const char *inpath = client_p->name;
  char *nick = NULL;
  char *user = NULL;
  char *host = NULL;
  char *reason = NULL;
  char bufhost[IRCD_BUFSIZE];
  char buf_nuh[NICKLEN + USERLEN + HOSTLEN + 3];
  char def_reason[] = "No reason specified";
  unsigned int count = 0;

  if (!(IsOperK(source_p) || IsOperGlobalKill(source_p)))
  {
    sendto_one(source_p, form_str(ERR_NOPRIVILEGES),
               me.name, source_p->name);
    return;
  }

  strlcpy(buf_nuh, parv[1], sizeof(buf_nuh));
  split_nuh(buf_nuh, &nick, &user, &host);

  if (!valid_wild_card(source_p, YES, 3, nick, user, host))
    goto cleanup;

  if (!EmptyString(parv[2]))
  {
    reason = parv[2];
    if (strlen(reason) > (size_t)KILLLEN)
      reason[KILLLEN] = '\0';
  }
  else
    reason = def_reason;

  DLINK_FOREACH_SAFE(ptr, ptr_next, global_client_list.head)
  {
    target_p = ptr->data;

    if (!IsClient(target_p) || (source_p == target_p))
      continue;

    if (!MyConnect(target_p) && !IsOperGlobalKill(source_p))
      continue;
      
    if (match(nick, target_p->name) &&
        match(user, target_p->username) &&
        match(host, target_p->host))
    {
      if (MyConnect(target_p))
        sendto_one(target_p, ":%s!%s@%s KILL %s :%s",
                   source_p->name, source_p->username, source_p->host,
                   target_p->name, reason);

      sendto_realops_flags(UMODE_ALL, L_ALL,
                           "Received KILL message for %s. From %s Path: %s (%s)",
                           target_p->name, source_p->name, me.name, reason);

      ilog(L_INFO,"KILL From %s For %s Path %s (%s)",
           source_p->name, target_p->name, me.name, reason);

      if (!MyConnect(target_p))
      {
        kh_relay_kill(client_p, source_p, target_p, inpath, reason);
        SetKilled(target_p);
      }

      if (!count++)
        ircsprintf(bufhost, "Killed (%s (%s))", source_p->name, reason);

      exit_client(target_p, source_p, bufhost);
    }
  }

  if (count > 0)
    sendto_wallops_flags(UMODE_OPERWALL, source_p, "OPERWALL - KILLHOST %s %s",
                         host, reason);

  sendto_one(source_p,":%s NOTICE %s :%u clients killed",
             me.name, source_p->name, count);
cleanup:
  MyFree(nick);
  MyFree(user);
  MyFree(host);
}

static void
kh_relay_kill(struct Client *one, struct Client *source_p, struct Client *target_p,
              const char *inpath, const char *reason)
{
  dlink_node *ptr;
  struct Client *client_p;
  int introduce_killed_client;
  char *user; 
  
  /* LazyLinks:
   * Check if each lazylink knows about target_p.
   *   If it does, send the kill, introducing source_p if required.
   *   If it doesn't either:
   *     a) don't send the kill (risk ghosts)
   *     b) introduce the client (and source_p, if required)
   *        [rather redundant]
   *
   * Use a) if IsServer(source_p), but if an oper kills someone,
   * ensure we blow away any ghosts.
   *
   * -davidt
   */

  if(IsServer(source_p))
    introduce_killed_client = 0;
  else
    introduce_killed_client = 1;

  DLINK_FOREACH(ptr, serv_list.head)
  {
    client_p = ptr->data;
    
    if (client_p == one)
      continue;

    if (!introduce_killed_client)
    {
      if (ServerInfo.hub && IsCapable(client_p, CAP_LL) )
      {
        if (((client_p->localClient->serverMask &
             target_p->lazyLinkClientExists) == 0))
        {
          /* target isn't known to lazy leaf, skip it */
          continue;
        }
      }
    }
    /* force introduction of killed client but check that
     * its not on the server we're bursting too.. */
    else if (strcmp(target_p->servptr->name,client_p->name))
      client_burst_if_needed(client_p, target_p);

    /* introduce source of kill */
    client_burst_if_needed(client_p, source_p);

    /* check the server supports TS6 */
    if (IsCapable(client_p, CAP_TS6))
      user = ID(target_p);
    else
      user = target_p->name;

    if (MyClient(source_p))
    {
      sendto_one(client_p, ":%s KILL %s :%s!%s!%s!%s (%s)",
                 source_p->name, user,
                 me.name, source_p->host, source_p->username,
                 source_p->name, reason);
    }
    else
    {
      sendto_one(client_p, ":%s KILL %s :%s %s",
                 source_p->name, user,
                 inpath, reason);
    }
  }
}
Revision:	32
Committed:	Sun Oct 2 20:41:23 2005 UTC (20 years, 10 months ago) by knight
Content type:	text/x-csrc
File size:	6556 byte(s)
Log Message:	- svn:keywords
#	User	Rev	Content
1	adx	30	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			* m_killhost.c: Kills a users with agree host.
4			*
5			* Copyright (C) 2002 by Ilya Shtift.
6			*
7			* This program is free software; you can redistribute it and/or modify
8			* it under the terms of the GNU General Public License as published by
9			* the Free Software Foundation; either version 2 of the License, or
10			* (at your option) any later version.
11			*
12			* This program is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			* GNU General Public License for more details.
16			*
17			* You should have received a copy of the GNU General Public License
18			* along with this program; if not, write to the Free Software
19			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20			* USA
21			*
22	knight	31	* $Id$
23	adx	30	*
24			*/
25
26			#include "stdinc.h"
27			#include "handlers.h"
28			#include "client.h"
29			#include "common.h"
30			#include "hash.h"
31			#include "ircd.h"
32			#include "numeric.h"
33			#include "s_log.h"
34			#include "s_serv.h"
35			#include "s_conf.h"
36			#include "send.h"
37			#include "whowas.h"
38			#include "irc_string.h"
39			#include "sprintf_irc.h"
40			#include "msg.h"
41			#include "parse.h"
42			#include "channel_mode.h" /* needed only for split_nuh() */
43			#include "modules.h"
44
45			static void mo_killhost(struct Client , struct Client , int, char *[]);
46			static void kh_relay_kill(struct Client , struct Client , struct Client *,
47			const char , const char );
48
49			struct Message killhost_msgtab = {
50			"KILLHOST", 0, 0, 2, 0, MFLG_SLOW, 0,
51			{ m_unregistered, m_ignore, m_ignore, m_ignore, mo_killhost, m_ignore }
52			};
53
54			#ifndef STATIC_MODULES
55			void
56			_modinit(void)
57			{
58			mod_add_cmd(&killhost_msgtab);
59			}
60
61			void
62			_moddeinit(void)
63			{
64			mod_del_cmd(&killhost_msgtab);
65			}
66
67	knight	31	const char *_version = "$Revision$";
68	adx	30	#endif
69
70			/* mo_killhost()
71			* Created May 5, 2003
72			* common (Ilya Shtift) ishtift@tagil.svrw.ru
73			*
74			* parv[0] = sender prefix
75			* parv[1] = host
76			* parv[2] = reason
77			*/
78			static void
79			mo_killhost(struct Client client_p, struct Client source_p,
80			int parc, char *parv[])
81			{
82			dlink_node ptr = NULL, ptr_next = NULL;
83			struct Client *target_p = NULL;
84			const char *inpath = client_p->name;
85			char *nick = NULL;
86			char *user = NULL;
87			char *host = NULL;
88			char *reason = NULL;
89			char bufhost[IRCD_BUFSIZE];
90			char buf_nuh[NICKLEN + USERLEN + HOSTLEN + 3];
91			char def_reason[] = "No reason specified";
92			unsigned int count = 0;
93
94			if (!(IsOperK(source_p) \|\| IsOperGlobalKill(source_p)))
95			{
96			sendto_one(source_p, form_str(ERR_NOPRIVILEGES),
97			me.name, source_p->name);
98			return;
99			}
100
101			strlcpy(buf_nuh, parv[1], sizeof(buf_nuh));
102			split_nuh(buf_nuh, &nick, &user, &host);
103
104			if (!valid_wild_card(source_p, YES, 3, nick, user, host))
105			goto cleanup;
106
107			if (!EmptyString(parv[2]))
108			{
109			reason = parv[2];
110			if (strlen(reason) > (size_t)KILLLEN)
111			reason[KILLLEN] = '\0';
112			}
113			else
114			reason = def_reason;
115
116			DLINK_FOREACH_SAFE(ptr, ptr_next, global_client_list.head)
117			{
118			target_p = ptr->data;
119
120			if (!IsClient(target_p) \|\| (source_p == target_p))
121			continue;
122
123			if (!MyConnect(target_p) && !IsOperGlobalKill(source_p))
124			continue;
125
126			if (match(nick, target_p->name) &&
127			match(user, target_p->username) &&
128			match(host, target_p->host))
129			{
130			if (MyConnect(target_p))
131			sendto_one(target_p, ":%s!%s@%s KILL %s :%s",
132			source_p->name, source_p->username, source_p->host,
133			target_p->name, reason);
134
135			sendto_realops_flags(UMODE_ALL, L_ALL,
136			"Received KILL message for %s. From %s Path: %s (%s)",
137			target_p->name, source_p->name, me.name, reason);
138
139			ilog(L_INFO,"KILL From %s For %s Path %s (%s)",
140			source_p->name, target_p->name, me.name, reason);
141
142			if (!MyConnect(target_p))
143			{
144			kh_relay_kill(client_p, source_p, target_p, inpath, reason);
145			SetKilled(target_p);
146			}
147
148			if (!count++)
149			ircsprintf(bufhost, "Killed (%s (%s))", source_p->name, reason);
150
151			exit_client(target_p, source_p, bufhost);
152			}
153			}
154
155			if (count > 0)
156			sendto_wallops_flags(UMODE_OPERWALL, source_p, "OPERWALL - KILLHOST %s %s",
157			host, reason);
158
159			sendto_one(source_p,":%s NOTICE %s :%u clients killed",
160			me.name, source_p->name, count);
161			cleanup:
162			MyFree(nick);
163			MyFree(user);
164			MyFree(host);
165			}
166
167			static void
168			kh_relay_kill(struct Client one, struct Client source_p, struct Client *target_p,
169			const char inpath, const char reason)
170			{
171			dlink_node *ptr;
172			struct Client *client_p;
173			int introduce_killed_client;
174			char *user;
175
176			/* LazyLinks:
177			* Check if each lazylink knows about target_p.
178			* If it does, send the kill, introducing source_p if required.
179			* If it doesn't either:
180			* a) don't send the kill (risk ghosts)
181			* b) introduce the client (and source_p, if required)
182			* [rather redundant]
183			*
184			* Use a) if IsServer(source_p), but if an oper kills someone,
185			* ensure we blow away any ghosts.
186			*
187			* -davidt
188			*/
189
190			if(IsServer(source_p))
191			introduce_killed_client = 0;
192			else
193			introduce_killed_client = 1;
194
195			DLINK_FOREACH(ptr, serv_list.head)
196			{
197			client_p = ptr->data;
198
199			if (client_p == one)
200			continue;
201
202			if (!introduce_killed_client)
203			{
204			if (ServerInfo.hub && IsCapable(client_p, CAP_LL) )
205			{
206			if (((client_p->localClient->serverMask &
207			target_p->lazyLinkClientExists) == 0))
208			{
209			/* target isn't known to lazy leaf, skip it */
210			continue;
211			}
212			}
213			}
214			/* force introduction of killed client but check that
215			* its not on the server we're bursting too.. */
216			else if (strcmp(target_p->servptr->name,client_p->name))
217			client_burst_if_needed(client_p, target_p);
218
219			/* introduce source of kill */
220			client_burst_if_needed(client_p, source_p);
221
222			/* check the server supports TS6 */
223			if (IsCapable(client_p, CAP_TS6))
224			user = ID(target_p);
225			else
226			user = target_p->name;
227
228			if (MyClient(source_p))
229			{
230			sendto_one(client_p, ":%s KILL %s :%s!%s!%s!%s (%s)",
231			source_p->name, user,
232			me.name, source_p->host, source_p->username,
233			source_p->name, reason);
234			}
235			else
236			{
237			sendto_one(client_p, ":%s KILL %s :%s %s",
238			source_p->name, user,
239			inpath, reason);
240			}
241			}
242			}