/[svn]/ircd-hybrid/modules/core/m_kill.c
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Contents of /ircd-hybrid/modules/core/m_kill.c

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Revision 30 - (show annotations)
Sun Oct 2 20:03:27 2005 UTC (15 years, 8 months ago) by adx
File MIME type: text/x-chdr
File size: 10704 byte(s)
- imported sources
- can be moved later according to the directory/branching scheme,
  but we need the svn up

1 /*
2 * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3 * m_kill.c: Kills a user.
4 *
5 * Copyright (C) 2002 by the past and present ircd coders, and others.
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 * $Id: m_kill.c,v 1.96 2005/09/05 12:03:04 db Exp $
23 */
24
25 #include "stdinc.h"
26 #include "handlers.h"
27 #include "client.h"
28 #include "hash.h" /* for find_client() */
29 #include "ircd.h"
30 #include "numeric.h"
31 #include "s_log.h"
32 #include "s_serv.h"
33 #include "s_conf.h"
34 #include "send.h"
35 #include "whowas.h"
36 #include "irc_string.h"
37 #include "sprintf_irc.h"
38 #include "msg.h"
39 #include "parse.h"
40 #include "modules.h"
41
42
43 static char buf[IRCD_BUFSIZE];
44
45 static void ms_kill(struct Client *, struct Client *, int, char *[]);
46 static void mo_kill(struct Client *, struct Client *, int, char *[]);
47 static void relay_kill(struct Client *, struct Client *, struct Client *,
48 const char *, const char *);
49
50 struct Message kill_msgtab = {
51 "KILL", 0, 0, 2, 0, MFLG_SLOW, 0,
52 {m_unregistered, m_not_oper, ms_kill, m_ignore, mo_kill, m_ignore}
53 };
54
55 #ifndef STATIC_MODULES
56 void
57 _modinit(void)
58 {
59 mod_add_cmd(&kill_msgtab);
60 }
61
62 void
63 _moddeinit(void)
64 {
65 mod_del_cmd(&kill_msgtab);
66 }
67
68 const char *_version = "$Revision: 1.96 $";
69 #endif
70
71 /* mo_kill()
72 * parv[0] = sender prefix
73 * parv[1] = kill victim
74 * parv[2] = kill path
75 */
76 static void
77 mo_kill(struct Client *client_p, struct Client *source_p,
78 int parc, char *parv[])
79 {
80 struct Client *target_p;
81 const char *inpath = client_p->name;
82 char *user;
83 char *reason;
84 char def_reason[] = "No reason";
85
86 user = parv[1];
87 reason = parv[2]; /* Either defined or NULL (parc >= 2!!) */
88
89 if (*user == '\0')
90 {
91 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
92 me.name, source_p->name, "KILL");
93 return;
94 }
95
96 if (IsDigit(*user)) /* opers shouldn't be trying uids anyway ;-) */
97 return;
98
99 if (!IsOperK(source_p) && !IsOperGlobalKill(source_p))
100 {
101 sendto_one(source_p, form_str(ERR_NOPRIVILEGES),
102 me.name, source_p->name);
103 return;
104 }
105
106 if (!EmptyString(reason))
107 {
108 if (strlen(reason) > (size_t)KILLLEN)
109 reason[KILLLEN] = '\0';
110 }
111 else
112 reason = def_reason;
113
114 if ((target_p = find_client(user)) == NULL)
115 {
116 /* If the user has recently changed nick, automatically
117 * rewrite the KILL for this new nickname--this keeps
118 * servers in synch when nick change and kill collide
119 */
120 if ((target_p = get_history(user,
121 (time_t)ConfigFileEntry.kill_chase_time_limit))
122 == NULL)
123 {
124 sendto_one(source_p, form_str(ERR_NOSUCHNICK),
125 me.name, source_p->name, user);
126 return;
127 }
128
129 sendto_one(source_p, ":%s NOTICE %s :KILL changed from %s to %s",
130 me.name, source_p->name, user, target_p->name);
131 }
132
133 if (IsServer(target_p) || IsMe(target_p))
134 {
135 sendto_one(source_p, form_str(ERR_CANTKILLSERVER),
136 me.name, source_p->name);
137 return;
138 }
139
140 if (!MyConnect(target_p) && (!IsOperGlobalKill(source_p)))
141 {
142 sendto_one(source_p, ":%s NOTICE %s :Nick %s isnt on your server",
143 me.name, source_p->name, target_p->name);
144 return;
145 }
146
147 if (MyConnect(target_p))
148 sendto_one(target_p, ":%s!%s@%s KILL %s :%s",
149 source_p->name, source_p->username, source_p->host,
150 target_p->name, reason);
151
152 /* Do not change the format of this message. There's no point in changing messages
153 * that have been around for ever, for no reason.. */
154 sendto_realops_flags(UMODE_ALL, L_ALL,
155 "Received KILL message for %s. From %s Path: %s (%s)",
156 target_p->name, source_p->name, me.name, reason);
157
158 ilog(L_INFO, "KILL From %s For %s Path %s (%s)",
159 source_p->name, target_p->name, me.name, reason);
160 log_oper_action(LOG_KILL_TYPE, source_p, "%s %s\n",
161 me.name, reason);
162
163 /*
164 ** And pass on the message to other servers. Note, that if KILL
165 ** was changed, the message has to be sent to all links, also
166 ** back.
167 ** Suicide kills are NOT passed on --SRB
168 */
169 if (!MyConnect(target_p))
170 {
171 relay_kill(client_p, source_p, target_p, inpath, reason);
172 /*
173 ** Set FLAGS_KILLED. This prevents exit_one_client from sending
174 ** the unnecessary QUIT for this. (This flag should never be
175 ** set in any other place)
176 */
177 SetKilled(target_p);
178 }
179
180 ircsprintf(buf, "Killed (%s (%s))", source_p->name, reason);
181 exit_client(target_p, source_p, buf);
182 }
183
184 /* ms_kill()
185 * parv[0] = sender prefix
186 * parv[1] = kill victim
187 * parv[2] = kill path and reason
188 */
189 static void
190 ms_kill(struct Client *client_p, struct Client *source_p,
191 int parc, char *parv[])
192 {
193 struct Client *target_p;
194 char *user;
195 char *reason;
196 const char *path;
197 char def_reason[] = "No reason";
198
199 if (*parv[1] == '\0')
200 {
201 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
202 me.name, source_p->name, "KILL");
203 return;
204 }
205
206 user = parv[1];
207
208 if (EmptyString(parv[2]))
209 {
210 reason = def_reason;
211
212 /* hyb6 takes the nick of the killer from the path *sigh* --fl_ */
213 path = source_p->name;
214 }
215 else
216 {
217 reason = strchr(parv[2], ' ');
218
219 if (reason != NULL)
220 *reason++ = '\0';
221 else
222 reason = def_reason;
223
224 path = parv[2];
225 }
226
227 if ((target_p = find_person(client_p, user)) == NULL)
228 {
229 /* If the user has recently changed nick, but only if its
230 * not an uid, automatically rewrite the KILL for this new nickname.
231 * --this keeps servers in synch when nick change and kill collide
232 */
233 if(IsDigit(*user)) /* Somehow an uid was not found in the hash ! */
234 return;
235 if((target_p = get_history(user,
236 (time_t)ConfigFileEntry.kill_chase_time_limit))
237 == NULL)
238 {
239 sendto_one(source_p, form_str(ERR_NOSUCHNICK),
240 me.name, source_p->name, user);
241 return;
242 }
243 sendto_one(source_p,":%s NOTICE %s :KILL changed from %s to %s",
244 me.name, source_p->name, user, target_p->name);
245 }
246
247 if (IsServer(target_p) || IsMe(target_p))
248 {
249 sendto_one(source_p, form_str(ERR_CANTKILLSERVER),
250 me.name, source_p->name);
251 return;
252 }
253
254 if (MyConnect(target_p))
255 {
256 if (IsServer(source_p))
257 {
258 /* dont send clients kills from a hidden server */
259 if ((IsHidden(source_p) || ConfigServerHide.hide_servers) && !IsOper(target_p))
260 sendto_one(target_p, ":%s KILL %s :%s",
261 me.name, target_p->name, reason);
262 else
263 sendto_one(target_p, ":%s KILL %s :%s",
264 source_p->name, target_p->name, reason);
265 }
266 else
267 sendto_one(target_p, ":%s!%s@%s KILL %s :%s",
268 source_p->name, source_p->username, source_p->host,
269 target_p->name, reason);
270 }
271
272 /* Be warned, this message must be From %s, or it confuses clients
273 * so dont change it to From: or the case or anything! -- fl -- db */
274 /* path must contain at least 2 !'s, or bitchx falsely declares it
275 * local --fl
276 */
277 if (IsOper(source_p)) /* send it normally */
278 {
279 sendto_realops_flags(UMODE_ALL, L_ALL,
280 "Received KILL message for %s. From %s Path: %s!%s!%s!%s %s",
281 target_p->name, source_p->name, source_p->servptr->name,
282 source_p->host, source_p->username, source_p->name, reason);
283 }
284 else
285 {
286 sendto_realops_flags(UMODE_SKILL, L_ALL,
287 "Received KILL message for %s. From %s %s",
288 target_p->name, source_p->name, reason);
289 }
290
291 ilog(L_INFO,"KILL From %s For %s Path %s %s",
292 source_p->name, target_p->name, source_p->name, reason);
293
294 relay_kill(client_p, source_p, target_p, path, reason);
295 SetKilled(target_p);
296
297 /* reason comes supplied with its own ()'s */
298 if (IsServer(source_p) && (IsHidden(source_p) || ConfigServerHide.hide_servers))
299 ircsprintf(buf, "Killed (%s %s)", me.name, reason);
300 else
301 ircsprintf(buf, "Killed (%s %s)", source_p->name, reason);
302
303 exit_client(target_p, source_p, buf);
304 }
305
306 static void
307 relay_kill(struct Client *one, struct Client *source_p,
308 struct Client *target_p, const char *inpath, const char *reason)
309 {
310 dlink_node *ptr;
311 struct Client *client_p;
312 int introduce_killed_client;
313 const char *from, *to;
314
315 /* LazyLinks:
316 * Check if each lazylink knows about target_p.
317 * If it does, send the kill, introducing source_p if required.
318 * If it doesn't either:
319 * a) don't send the kill (risk ghosts)
320 * b) introduce the client (and source_p, if required)
321 * [rather redundant]
322 *
323 * Use a) if IsServer(source_p), but if an oper kills someone,
324 * ensure we blow away any ghosts.
325 *
326 * -davidt
327 */
328
329 if (IsServer(source_p))
330 introduce_killed_client = 0;
331 else
332 introduce_killed_client = 1;
333
334 DLINK_FOREACH(ptr, serv_list.head)
335 {
336 client_p = ptr->data;
337
338 if (client_p == NULL || client_p == one)
339 continue;
340
341 if (!introduce_killed_client)
342 {
343 if (ServerInfo.hub && IsCapable(client_p, CAP_LL))
344 {
345 if ((client_p->localClient->serverMask &
346 target_p->lazyLinkClientExists) == 0)
347 {
348 /* target isn't known to lazy leaf, skip it */
349 continue;
350 }
351 }
352 }
353 /* force introduction of killed client but check that
354 * its not on the server we're bursting too.. */
355 else if (strcmp(target_p->servptr->name, client_p->name))
356 client_burst_if_needed(client_p, target_p);
357
358 /* introduce source of kill */
359 client_burst_if_needed(client_p, source_p);
360
361 /* use UID if possible */
362 from = ID_or_name(source_p, client_p);
363 to = ID_or_name(target_p, client_p);
364
365 if (MyClient(source_p))
366 {
367 sendto_one(client_p, ":%s KILL %s :%s!%s!%s!%s (%s)",
368 from, to,
369 me.name, source_p->host, source_p->username,
370 source_p->name, reason);
371 }
372 else
373 {
374 sendto_one(client_p, ":%s KILL %s :%s %s",
375 from, to, inpath, reason);
376 }
377 }
378 }
379

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