/[svn]/ircd-hybrid-7.2/modules/core/m_mode.c
ViewVC logotype

Contents of /ircd-hybrid-7.2/modules/core/m_mode.c

Parent Directory Parent Directory | Revision Log Revision Log


Revision 632 - (show annotations)
Thu Jun 1 10:53:00 2006 UTC (13 years, 4 months ago) by michael
File MIME type: text/x-chdr
File size: 9179 byte(s)
- Added channel::disable_fake_channels which disallows creation of channels
  that have ascii 2, 3, 31 and 160 in their names.
- Minor improvements and cleanups to channel name validation routines
  backported from 7.3

1 /*
2 * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3 * m_mode.c: Sets a user or channel mode.
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 * $Id$
23 */
24
25 #include "stdinc.h"
26 #include "tools.h"
27 #include "handlers.h"
28 #include "channel.h"
29 #include "channel_mode.h"
30 #include "client.h"
31 #include "hash.h"
32 #include "irc_string.h"
33 #include "sprintf_irc.h"
34 #include "ircd.h"
35 #include "numeric.h"
36 #include "s_user.h"
37 #include "s_conf.h"
38 #include "s_serv.h"
39 #include "send.h"
40 #include "msg.h"
41 #include "parse.h"
42 #include "modules.h"
43 #include "packet.h"
44 #include "common.h"
45
46 static void m_mode(struct Client *, struct Client *, int, char *[]);
47 static void ms_tmode(struct Client *, struct Client *, int, char *[]);
48 static void ms_bmask(struct Client *, struct Client *, int, char *[]);
49
50 struct Message mode_msgtab = {
51 "MODE", 0, 0, 2, 0, MFLG_SLOW, 0,
52 {m_unregistered, m_mode, m_mode, m_ignore, m_mode, m_ignore}
53 };
54
55 struct Message tmode_msgtab = {
56 "TMODE", 0, 0, 4, 0, MFLG_SLOW, 0,
57 {m_ignore, m_ignore, ms_tmode, m_ignore, m_ignore, m_ignore}
58 };
59
60 struct Message bmask_msgtab = {
61 "BMASK", 0, 0, 5, 0, MFLG_SLOW, 0,
62 {m_ignore, m_ignore, ms_bmask, m_ignore, m_ignore, m_ignore}
63 };
64
65 #ifndef STATIC_MODULES
66 void
67 _modinit(void)
68 {
69 mod_add_cmd(&mode_msgtab);
70 mod_add_cmd(&tmode_msgtab);
71 mod_add_cmd(&bmask_msgtab);
72 }
73
74 void
75 _moddeinit(void)
76 {
77 mod_del_cmd(&mode_msgtab);
78 mod_del_cmd(&tmode_msgtab);
79 mod_del_cmd(&bmask_msgtab);
80 }
81
82 const char *_version = "$Revision$";
83 #endif
84
85 /*
86 * m_mode - MODE command handler
87 * parv[0] - sender
88 * parv[1] - channel
89 */
90 static void
91 m_mode(struct Client *client_p, struct Client *source_p,
92 int parc, char *parv[])
93 {
94 struct Channel *chptr = NULL;
95 struct Membership *member;
96 static char modebuf[MODEBUFLEN];
97 static char parabuf[MODEBUFLEN];
98
99 if (*parv[1] == '\0')
100 {
101 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
102 me.name, source_p->name, "MODE");
103 return;
104 }
105
106 /* Now, try to find the channel in question */
107 if (!IsChanPrefix(*parv[1]))
108 {
109 /* if here, it has to be a non-channel name */
110 set_user_mode(client_p, source_p, parc, parv);
111 return;
112 }
113
114 if (!check_channel_name(parv[1], !!MyConnect(source_p)))
115 {
116 sendto_one(source_p, form_str(ERR_BADCHANNAME),
117 me.name, source_p->name, parv[1]);
118 return;
119 }
120
121 chptr = hash_find_channel(parv[1]);
122
123 if (chptr == NULL)
124 {
125 /* if chptr isn't found locally, it =could= exist
126 * on the uplink. So ask.
127 */
128
129 /* LazyLinks */
130 /* only send a mode upstream if a local client sent this request
131 * -davidt
132 */
133 if (MyClient(source_p) && !ServerInfo.hub && uplink &&
134 IsCapable(uplink, CAP_LL))
135 {
136 #if 0
137 /* cache the channel if it exists on uplink */
138 /* Lets not for now -db */
139
140 sendto_one(uplink, ":%s CBURST %s",
141 me.name, chptr->chname);
142 #endif
143 sendto_one(uplink, ":%s MODE %s %s",
144 ID_or_name(source_p, uplink),
145 chptr->chname, (parv[2] ? parv[2] : ""));
146 return;
147 }
148 else
149 {
150 sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
151 ID_or_name(&me, source_p->from),
152 ID_or_name(source_p, source_p->from),
153 parv[1]);
154 return;
155 }
156 }
157
158 /* Now known the channel exists */
159 if (parc < 3)
160 {
161 channel_modes(chptr, source_p, modebuf, parabuf);
162 sendto_one(source_p, form_str(RPL_CHANNELMODEIS),
163 me.name, source_p->name, chptr->chname, modebuf, parabuf);
164 sendto_one(source_p, form_str(RPL_CREATIONTIME),
165 me.name, source_p->name, chptr->chname, chptr->channelts);
166 }
167 /* bounce all modes from people we deop on sjoin
168 * servers have always gotten away with murder,
169 * including telnet servers *g* - Dianora
170 *
171 * XXX Is it worth the bother to make an ms_mode() ? - Dianora
172 */
173 else if (IsServer(source_p))
174 {
175 set_channel_mode(client_p, source_p, chptr, NULL, parc - 2, parv + 2,
176 chptr->chname);
177 }
178 else
179 {
180 member = find_channel_link(source_p, chptr);
181
182 if (!has_member_flags(member, CHFL_DEOPPED))
183 {
184 /* Finish the flood grace period... */
185 if (MyClient(source_p) && !IsFloodDone(source_p))
186 {
187 if (!((parc == 3) && (parv[2][0] == 'b') && (parv[2][1] == '\0')))
188 flood_endgrace(source_p);
189 }
190
191 set_channel_mode(client_p, source_p, chptr, member, parc - 2, parv + 2,
192 chptr->chname);
193 }
194 }
195 }
196
197 /*
198 * ms_tmode()
199 *
200 * inputs - parv[0] = UID
201 * parv[1] = TS
202 * parv[2] = channel name
203 * parv[3] = modestring
204 */
205 static void
206 ms_tmode(struct Client *client_p, struct Client *source_p, int parc, char *parv[])
207 {
208 struct Channel *chptr = NULL;
209 struct Membership *member = NULL;
210
211 if ((chptr = hash_find_channel(parv[2])) == NULL)
212 {
213 sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
214 ID_or_name(&me, client_p), ID_or_name(source_p, client_p), parv[2]);
215 return;
216 }
217
218 if (atol(parv[1]) > chptr->channelts)
219 return;
220
221 if (IsServer(source_p))
222 set_channel_mode(client_p, source_p, chptr, NULL, parc - 3, parv + 3, chptr->chname);
223 else
224 {
225 member = find_channel_link(source_p, chptr);
226
227 /* XXX are we sure we just want to bail here? */
228 if (has_member_flags(member, CHFL_DEOPPED))
229 return;
230
231 set_channel_mode(client_p, source_p, chptr, member, parc - 3, parv + 3, chptr->chname);
232 }
233 }
234
235 /*
236 * ms_bmask()
237 *
238 * inputs - parv[0] = SID
239 * parv[1] = TS
240 * parv[2] = channel name
241 * parv[3] = type of ban to add ('b' 'I' or 'e')
242 * parv[4] = space delimited list of masks to add
243 * outputs - none
244 * side effects - propagates unchanged bmask line to CAP_TS6 servers,
245 * sends plain modes to the others. nothing is sent
246 * to the server the issuing server is connected through
247 */
248 static void
249 ms_bmask(struct Client *client_p, struct Client *source_p, int parc, char *parv[])
250 {
251 static char modebuf[IRCD_BUFSIZE];
252 static char parabuf[IRCD_BUFSIZE];
253 static char banbuf[IRCD_BUFSIZE];
254 struct Channel *chptr;
255 char *s, *t, *mbuf, *pbuf;
256 long mode_type;
257 int mlen, tlen;
258 int modecount = 0;
259 int needcap = NOCAPS;
260
261 if ((chptr = hash_find_channel(parv[2])) == NULL)
262 return;
263
264 /* TS is higher, drop it. */
265 if (atol(parv[1]) > chptr->channelts)
266 return;
267
268 switch (*parv[3])
269 {
270 case 'b':
271 mode_type = CHFL_BAN;
272 break;
273
274 case 'e':
275 mode_type = CHFL_EXCEPTION;
276 needcap = CAP_EX;
277 break;
278
279 case 'I':
280 mode_type = CHFL_INVEX;
281 needcap = CAP_IE;
282 break;
283
284 /* maybe we should just blindly propagate this? */
285 default:
286 return;
287 }
288
289 parabuf[0] = '\0';
290 s = banbuf;
291 strlcpy(s, parv[4], sizeof(banbuf));
292
293 /* only need to construct one buffer, for non-ts6 servers */
294 mlen = ircsprintf(modebuf, ":%s MODE %s +",
295 source_p->name, chptr->chname);
296 mbuf = modebuf + mlen;
297 pbuf = parabuf;
298
299 do {
300 if ((t = strchr(s, ' ')) != NULL)
301 *t++ = '\0';
302 tlen = strlen(s);
303
304 /* I dont even want to begin parsing this.. */
305 if (tlen > MODEBUFLEN)
306 break;
307
308 if (tlen && *s != ':' && add_id(source_p, chptr, s, mode_type))
309 {
310 /* this new one wont fit.. */
311 if (mbuf - modebuf + 2 + pbuf - parabuf + tlen > IRCD_BUFSIZE - 2 ||
312 modecount >= MAXMODEPARAMS)
313 {
314 *mbuf = '\0';
315 *(pbuf - 1) = '\0';
316
317 sendto_channel_local(ALL_MEMBERS, NO, chptr, "%s %s",
318 modebuf, parabuf);
319 sendto_server(client_p, NULL, chptr, needcap, CAP_TS6, NOFLAGS,
320 "%s %s", modebuf, parabuf);
321
322 mbuf = modebuf + mlen;
323 pbuf = parabuf;
324 modecount = 0;
325 }
326
327 *mbuf++ = parv[3][0];
328 pbuf += ircsprintf(pbuf, "%s ", s);
329 modecount++;
330 }
331
332 s = t;
333 } while (s != NULL);
334
335 if (modecount)
336 {
337 *mbuf = *(pbuf - 1) = '\0';
338 sendto_channel_local(ALL_MEMBERS, NO, chptr, "%s %s", modebuf, parabuf);
339 sendto_server(client_p, NULL, chptr, needcap, CAP_TS6, NOFLAGS,
340 "%s %s", modebuf, parabuf);
341 }
342
343 /* assumption here is that since the server sent BMASK, they are TS6, so they have an ID */
344 sendto_server(client_p, NULL, chptr, CAP_TS6|needcap, NOCAPS, NOFLAGS,
345 ":%s BMASK %lu %s %s :%s",
346 source_p->id, (unsigned long)chptr->channelts, chptr->chname,
347 parv[3], parv[4]);
348 }

Properties

Name Value
svn:eol-style native
svn:keywords Id Revision

svnadmin@ircd-hybrid.org
ViewVC Help
Powered by ViewVC 1.1.26