modules/core/m_kill.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2014 ircd-hybrid 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
 *  USA
 */

/*! \file m_kill.c
 * \brief Includes required functions for processing the KILL command.
 * \version $Id$
 */

#include "stdinc.h"
#include "list.h"
#include "client.h"
#include "hash.h"
#include "ircd.h"
#include "numeric.h"
#include "log.h"
#include "server.h"
#include "conf.h"
#include "send.h"
#include "whowas.h"
#include "irc_string.h"
#include "parse.h"
#include "modules.h"


/*! \brief KILL command handler
 *
 * \param source_p Pointer to allocated Client struct from which the message
 *                 originally comes from.  This can be a local or remote client.
 * \param parc     Integer holding the number of supplied arguments.
 * \param parv     Argument vector where parv[0] .. parv[parc-1] are non-NULL
 *                 pointers.
 * \note Valid arguments for this command are:
 *      - parv[0] = command
 *      - parv[1] = kill victim
 *      - parv[2] = reason
 */
static int
mo_kill(struct Client *source_p, int parc, char *parv[])
{
  char buf[IRCD_BUFSIZE] = "";
  char def_reason[] = CONF_NOREASON;
  struct Client *target_p = NULL;
  char *reason = NULL;

  if (EmptyString(parv[1]))
  {
    sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "KILL");
    return 0;
  }

  reason = parv[2];  /* Either defined or NULL (parc >= 2!!) */

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

  if ((target_p = hash_find_client(parv[1])) == NULL)
  {
    /*
     * If the user has recently changed nick, automatically
     * rewrite the KILL for this new nickname--this keeps
     * servers in synch when nick change and kill collide
     */
    if ((target_p = whowas_get_history(parv[1],
                                (time_t)ConfigGeneral.kill_chase_time_limit))
                                == NULL)
    {
      sendto_one_numeric(source_p, &me, ERR_NOSUCHNICK, parv[1]);
      return 0;
    }

    sendto_one_notice(source_p, &me, ":KILL changed from %s to %s",
                      parv[1], target_p->name);
  }

  if (!MyConnect(target_p) && !HasOFlag(source_p, OPER_FLAG_KILL_REMOTE))
  {
    sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "kill:remote");
    return 0;
  }

  if (MyConnect(target_p) && !HasOFlag(source_p, OPER_FLAG_KILL))
  {
    sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "kill");
    return 0;
  }

  if (IsServer(target_p) || IsMe(target_p))
  {
    sendto_one_numeric(source_p, &me, ERR_CANTKILLSERVER);
    return 0;
  }

  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);

  /*
   * Do not change the format of this message. There's no point in changing messages
   * that have been around for ever, for no reason..
   */
  sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
                       "Received KILL message for %s!%s@%s[%s/%s]. From %s Path: %s (%s)",
                       target_p->name, target_p->username, target_p->host,
                       target_p->servptr->name,
                       target_p->servptr->id,
                       source_p->name, me.name, reason);

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

  /*
   * 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(target_p))
  {
    sendto_server(source_p, NOCAPS, NOCAPS, ":%s KILL %s :%s!%s!%s!%s (%s)",
                  source_p->id, target_p->id, me.name, source_p->host,
                  source_p->username, source_p->name, reason);

    /*
     * Set FLAGS_KILLED. This prevents exit_client() from sending
     * the unnecessary QUIT for this. (This flag should never be
     * set in any other place)
     */
    AddFlag(target_p, FLAGS_KILLED);
  }

  snprintf(buf, sizeof(buf), "Killed (%s (%s))", source_p->name, reason);
  exit_client(target_p, buf);
  return 0;
}

/*! \brief KILL command handler
 *
 * \param source_p Pointer to allocated Client struct from which the message
 *                 originally comes from.  This can be a local or remote client.
 * \param parc     Integer holding the number of supplied arguments.
 * \param parv     Argument vector where parv[0] .. parv[parc-1] are non-NULL
 *                 pointers.
 * \note Valid arguments for this command are:
 *      - parv[0] = command
 *      - parv[1] = kill victim
 *      - parv[2] = kill path and reason
 */
static int
ms_kill(struct Client *source_p, int parc, char *parv[])
{
  char buf[IRCD_BUFSIZE] = "";
  char def_reason[] = CONF_NOREASON;
  struct Client *target_p = NULL;
  char *reason = NULL;

  if (parc < 3 || EmptyString(parv[2]))
  {
    sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "KILL");
    return 0;
  }

  if ((target_p = find_person(source_p, parv[1])) == NULL)
    return 0;

  if ((reason = strchr(parv[2], ' ')))
    *reason++ = '\0';
  else
    reason = def_reason;

  if (IsServer(target_p) || IsMe(target_p))
  {
    sendto_one_numeric(source_p, &me, ERR_CANTKILLSERVER);
    return 0;
  }

  if (MyConnect(target_p))
  {
    if (IsServer(source_p))
    {
      /* Don't send clients kills from a hidden server */
      if ((IsHidden(source_p) || ConfigServerHide.hide_servers) && !HasUMode(target_p, UMODE_OPER))
        sendto_one(target_p, ":%s KILL %s :%s",
                   me.name, target_p->name, reason);
      else
        sendto_one(target_p, ":%s KILL %s :%s",
                   source_p->name, target_p->name, reason);
    }
    else
      sendto_one(target_p, ":%s!%s@%s KILL %s :%s",
                 source_p->name, source_p->username, source_p->host,
                 target_p->name, reason);
  }

  /*
   * Be warned, this message must be From %s, or it confuses clients
   * so don't change it to From: or the case or anything! -- fl -- db
   */
  /*
   * Path must contain at least 2 !'s, or bitchx falsely declares it
   * local --fl
   */
  if (IsClient(source_p))  /* Send it normally */
    sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
                         "Received KILL message for %s!%s@%s[%s/%s]. From %s Path: %s!%s!%s!%s %s",
                         target_p->name, target_p->username, target_p->host,
                         target_p->servptr->name,
                         target_p->servptr->id, source_p->name,
                         source_p->servptr->name, source_p->host, source_p->username,
                         source_p->name, reason);
  else
    sendto_realops_flags(UMODE_SKILL, L_ALL, SEND_NOTICE,
                         "Received KILL message for %s!%s@%s[%s/%s]. From %s %s",
                         target_p->name, target_p->username, target_p->host,
                         target_p->servptr->name,
                         target_p->servptr->id,
                         source_p->name, reason);

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

  sendto_server(source_p, NOCAPS, NOCAPS, ":%s KILL %s :%s %s",
                source_p->id, target_p->id, parv[2], reason);
  AddFlag(target_p, FLAGS_KILLED);

  /* Reason comes supplied with its own ()'s */
  if (IsServer(source_p) && (IsHidden(source_p) || ConfigServerHide.hide_servers))
    snprintf(buf, sizeof(buf), "Killed (%s %s)", me.name, reason);
  else
    snprintf(buf, sizeof(buf), "Killed (%s %s)", source_p->name, reason);

  exit_client(target_p, buf);
  return 0;
}


static struct Message kill_msgtab =
{
  "KILL", NULL, 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
  { m_unregistered, m_not_oper, ms_kill, m_ignore, mo_kill, m_ignore }
};

static void
module_init(void)
{
  mod_add_cmd(&kill_msgtab);
}

static void
module_exit(void)
{
  mod_del_cmd(&kill_msgtab);
}

struct module module_entry =
{
  .node    = { NULL, NULL, NULL },
  .name    = NULL,
  .version = "$Revision$",
  .handle  = NULL,
  .modinit = module_init,
  .modexit = module_exit,
  .flags   = MODULE_FLAG_CORE
};
Revision:	4703
Committed:	Sun Oct 5 16:19:05 2014 UTC (9 years, 6 months ago) by michael
Content type:	text/x-csrc
File size:	8994 byte(s)
Log Message:	- m_kill.c:ms_kill(): replaced HasUMode(source_p, UMODE_OPER) with just IsClient(source_p)
#	User	Rev	Content
1	adx	30	/*
2	michael	2820	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	2820	* Copyright (c) 1997-2014 ircd-hybrid development team
5	adx	30	*
6			* This program is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with this program; if not, write to the Free Software
18	michael	4565	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
19	adx	30	* USA
20			*/
21
22	michael	2820	/*! \file m_kill.c
23			* \brief Includes required functions for processing the KILL command.
24			* \version $Id$
25			*/
26
27	adx	30	#include "stdinc.h"
28	michael	1011	#include "list.h"
29	adx	30	#include "client.h"
30	michael	2820	#include "hash.h"
31	adx	30	#include "ircd.h"
32			#include "numeric.h"
33	michael	1309	#include "log.h"
34	michael	3347	#include "server.h"
35	michael	1309	#include "conf.h"
36	adx	30	#include "send.h"
37			#include "whowas.h"
38			#include "irc_string.h"
39			#include "parse.h"
40			#include "modules.h"
41
42
43	michael	4600	/*! \brief KILL command handler
44			*
45			* \param source_p Pointer to allocated Client struct from which the message
46			* originally comes from. This can be a local or remote client.
47			* \param parc Integer holding the number of supplied arguments.
48			* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
49			* pointers.
50			* \note Valid arguments for this command are:
51			* - parv[0] = command
52			* - parv[1] = kill victim
53			* - parv[2] = reason
54	adx	30	*/
55	michael	2820	static int
56	michael	3156	mo_kill(struct Client source_p, int parc, char parv[])
57	adx	30	{
58	michael	3179	char buf[IRCD_BUFSIZE] = "";
59	michael	1794	char def_reason[] = CONF_NOREASON;
60	michael	3201	struct Client *target_p = NULL;
61			char *reason = NULL;
62	adx	30
63	michael	3201	if (EmptyString(parv[1]))
64	adx	30	{
65	michael	3109	sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "KILL");
66	michael	2820	return 0;
67	adx	30	}
68
69	michael	3201	reason = parv[2]; /* Either defined or NULL (parc >= 2!!) */
70
71	adx	30	if (!EmptyString(reason))
72			{
73			if (strlen(reason) > (size_t)KILLLEN)
74			reason[KILLLEN] = '\0';
75			}
76			else
77			reason = def_reason;
78
79	michael	3201	if ((target_p = hash_find_client(parv[1])) == NULL)
80	adx	30	{
81	michael	1136	/*
82			* If the user has recently changed nick, automatically
83	adx	30	* rewrite the KILL for this new nickname--this keeps
84			* servers in synch when nick change and kill collide
85			*/
86	michael	3201	if ((target_p = whowas_get_history(parv[1],
87	michael	4340	(time_t)ConfigGeneral.kill_chase_time_limit))
88	michael	1451	== NULL)
89	adx	30	{
90	michael	3201	sendto_one_numeric(source_p, &me, ERR_NOSUCHNICK, parv[1]);
91	michael	2820	return 0;
92	adx	30	}
93
94	michael	3110	sendto_one_notice(source_p, &me, ":KILL changed from %s to %s",
95	michael	3201	parv[1], target_p->name);
96	adx	30	}
97
98	michael	2801	if (!MyConnect(target_p) && !HasOFlag(source_p, OPER_FLAG_KILL_REMOTE))
99	adx	30	{
100	michael	3109	sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "kill:remote");
101	michael	2820	return 0;
102	adx	30	}
103
104	michael	2801	if (MyConnect(target_p) && !HasOFlag(source_p, OPER_FLAG_KILL))
105			{
106	michael	3109	sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "kill");
107	michael	2820	return 0;
108	michael	2801	}
109
110	michael	2012	if (IsServer(target_p) \|\| IsMe(target_p))
111	adx	30	{
112	michael	3109	sendto_one_numeric(source_p, &me, ERR_CANTKILLSERVER);
113	michael	2820	return 0;
114	adx	30	}
115
116			if (MyConnect(target_p))
117	michael	2820	sendto_one(target_p, ":%s!%s@%s KILL %s :%s",
118	adx	30	source_p->name, source_p->username, source_p->host,
119			target_p->name, reason);
120
121	michael	1136	/*
122			* Do not change the format of this message. There's no point in changing messages
123			* that have been around for ever, for no reason..
124			*/
125	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
126	michael	2820	"Received KILL message for %s!%s@%s[%s/%s]. From %s Path: %s (%s)",
127	michael	2037	target_p->name, target_p->username, target_p->host,
128			target_p->servptr->name,
129	michael	3201	target_p->servptr->id,
130	michael	2037	source_p->name, me.name, reason);
131	adx	30
132	michael	1247	ilog(LOG_TYPE_KILL, "KILL From %s For %s Path %s (%s)",
133	adx	30	source_p->name, target_p->name, me.name, reason);
134
135			/*
136	michael	1136	* And pass on the message to other servers. Note, that if KILL
137			* was changed, the message has to be sent to all links, also
138			* back.
139			* Suicide kills are NOT passed on --SRB
140			*/
141	adx	30	if (!MyConnect(target_p))
142			{
143	michael	3179	sendto_server(source_p, NOCAPS, NOCAPS, ":%s KILL %s :%s!%s!%s!%s (%s)",
144			source_p->id, target_p->id, me.name, source_p->host,
145			source_p->username, source_p->name, reason);
146	michael	3201
147	michael	3179	/*
148	michael	4600	* Set FLAGS_KILLED. This prevents exit_client() from sending
149	michael	3179	* the unnecessary QUIT for this. (This flag should never be
150			* set in any other place)
151			*/
152	michael	1219	AddFlag(target_p, FLAGS_KILLED);
153	adx	30	}
154
155	michael	1136	snprintf(buf, sizeof(buf), "Killed (%s (%s))", source_p->name, reason);
156	michael	3171	exit_client(target_p, buf);
157	michael	2820	return 0;
158	adx	30	}
159
160	michael	4600	/*! \brief KILL command handler
161			*
162			* \param source_p Pointer to allocated Client struct from which the message
163			* originally comes from. This can be a local or remote client.
164			* \param parc Integer holding the number of supplied arguments.
165			* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
166			* pointers.
167			* \note Valid arguments for this command are:
168			* - parv[0] = command
169			* - parv[1] = kill victim
170			* - parv[2] = kill path and reason
171	adx	30	*/
172	michael	2820	static int
173	michael	3156	ms_kill(struct Client source_p, int parc, char parv[])
174	adx	30	{
175	michael	3179	char buf[IRCD_BUFSIZE] = "";
176	michael	1794	char def_reason[] = CONF_NOREASON;
177	michael	3200	struct Client *target_p = NULL;
178			char *reason = NULL;
179	adx	30
180	michael	3201	if (parc < 3 \|\| EmptyString(parv[2]))
181	adx	30	{
182	michael	3109	sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "KILL");
183	michael	2820	return 0;
184	adx	30	}
185
186	michael	3431	if ((target_p = find_person(source_p, parv[1])) == NULL)
187	michael	3201	return 0;
188
189	michael	3200	if ((reason = strchr(parv[2], ' ')))
190			*reason++ = '\0';
191			else
192	adx	30	reason = def_reason;
193
194			if (IsServer(target_p) \|\| IsMe(target_p))
195			{
196	michael	3109	sendto_one_numeric(source_p, &me, ERR_CANTKILLSERVER);
197	michael	2820	return 0;
198	adx	30	}
199
200			if (MyConnect(target_p))
201			{
202			if (IsServer(source_p))
203			{
204	michael	4298	/* Don't send clients kills from a hidden server */
205	michael	1219	if ((IsHidden(source_p) \|\| ConfigServerHide.hide_servers) && !HasUMode(target_p, UMODE_OPER))
206	adx	30	sendto_one(target_p, ":%s KILL %s :%s",
207	michael	1451	me.name, target_p->name, reason);
208	adx	30	else
209	michael	1451	sendto_one(target_p, ":%s KILL %s :%s",
210			source_p->name, target_p->name, reason);
211	adx	30	}
212			else
213			sendto_one(target_p, ":%s!%s@%s KILL %s :%s",
214	michael	1451	source_p->name, source_p->username, source_p->host,
215			target_p->name, reason);
216	adx	30	}
217
218	michael	1451	/*
219			* Be warned, this message must be From %s, or it confuses clients
220	michael	4298	* so don't change it to From: or the case or anything! -- fl -- db
221	michael	1451	*/
222			/*
223	michael	4298	* Path must contain at least 2 !'s, or bitchx falsely declares it
224	adx	30	* local --fl
225			*/
226	michael	4703	if (IsClient(source_p)) /* Send it normally */
227	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
228	michael	2037	"Received KILL message for %s!%s@%s[%s/%s]. From %s Path: %s!%s!%s!%s %s",
229			target_p->name, target_p->username, target_p->host,
230			target_p->servptr->name,
231	michael	3201	target_p->servptr->id, source_p->name,
232	michael	2037	source_p->servptr->name, source_p->host, source_p->username,
233			source_p->name, reason);
234	adx	30	else
235	michael	1618	sendto_realops_flags(UMODE_SKILL, L_ALL, SEND_NOTICE,
236	michael	2037	"Received KILL message for %s!%s@%s[%s/%s]. From %s %s",
237			target_p->name, target_p->username, target_p->host,
238			target_p->servptr->name,
239	michael	3201	target_p->servptr->id,
240	michael	2037	source_p->name, reason);
241	adx	30
242	michael	1247	ilog(LOG_TYPE_KILL, "KILL From %s For %s Path %s %s",
243	adx	30	source_p->name, target_p->name, source_p->name, reason);
244
245	michael	3179	sendto_server(source_p, NOCAPS, NOCAPS, ":%s KILL %s :%s %s",
246	michael	3200	source_p->id, target_p->id, parv[2], reason);
247	michael	1219	AddFlag(target_p, FLAGS_KILLED);
248	adx	30
249	michael	4298	/* Reason comes supplied with its own ()'s */
250	adx	30	if (IsServer(source_p) && (IsHidden(source_p) \|\| ConfigServerHide.hide_servers))
251	michael	1136	snprintf(buf, sizeof(buf), "Killed (%s %s)", me.name, reason);
252	adx	30	else
253	michael	1136	snprintf(buf, sizeof(buf), "Killed (%s %s)", source_p->name, reason);
254	adx	30
255	michael	3171	exit_client(target_p, buf);
256	michael	2820	return 0;
257	adx	30	}
258
259
260	michael	2820	static struct Message kill_msgtab =
261			{
262	michael	4545	"KILL", NULL, 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
263	michael	2820	{ m_unregistered, m_not_oper, ms_kill, m_ignore, mo_kill, m_ignore }
264	michael	1230	};
265
266			static void
267			module_init(void)
268			{
269			mod_add_cmd(&kill_msgtab);
270			}
271
272			static void
273			module_exit(void)
274			{
275			mod_del_cmd(&kill_msgtab);
276			}
277
278	michael	2820	struct module module_entry =
279			{
280	michael	1230	.node = { NULL, NULL, NULL },
281			.name = NULL,
282			.version = "$Revision$",
283			.handle = NULL,
284			.modinit = module_init,
285			.modexit = module_exit,
286			.flags = MODULE_FLAG_CORE
287			};