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

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Revision 885 - (show annotations)
Wed Oct 31 18:09:24 2007 UTC (13 years, 7 months ago) by michael
Original Path: ircd-hybrid-7.2/modules/core/m_mode.c
File MIME type: text/x-chdr
File size: 8280 byte(s)
- Removed LazyLinks in 7.2 to stop people from asking why we keep
  broken code for half a decade. LL will be implemented in a smarter
  fashion in due time

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 (EmptyString(parv[1]))
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 ((chptr = hash_find_channel(parv[1])) == NULL)
115 {
116 sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
117 ID_or_name(&me, source_p->from),
118 ID_or_name(source_p, source_p->from),
119 parv[1]);
120 return;
121 }
122
123 /* Now known the channel exists */
124 if (parc < 3)
125 {
126 channel_modes(chptr, source_p, modebuf, parabuf);
127 sendto_one(source_p, form_str(RPL_CHANNELMODEIS),
128 me.name, source_p->name, chptr->chname, modebuf, parabuf);
129 sendto_one(source_p, form_str(RPL_CREATIONTIME),
130 me.name, source_p->name, chptr->chname, chptr->channelts);
131 }
132 /* bounce all modes from people we deop on sjoin
133 * servers have always gotten away with murder,
134 * including telnet servers *g* - Dianora
135 *
136 * XXX Is it worth the bother to make an ms_mode() ? - Dianora
137 */
138 else if (IsServer(source_p))
139 {
140 set_channel_mode(client_p, source_p, chptr, NULL, parc - 2, parv + 2,
141 chptr->chname);
142 }
143 else
144 {
145 member = find_channel_link(source_p, chptr);
146
147 if (!has_member_flags(member, CHFL_DEOPPED))
148 {
149 /* Finish the flood grace period... */
150 if (MyClient(source_p) && !IsFloodDone(source_p))
151 {
152 if (!((parc == 3) && (parv[2][0] == 'b') && (parv[2][1] == '\0')))
153 flood_endgrace(source_p);
154 }
155
156 set_channel_mode(client_p, source_p, chptr, member, parc - 2, parv + 2,
157 chptr->chname);
158 }
159 }
160 }
161
162 /*
163 * ms_tmode()
164 *
165 * inputs - parv[0] = UID
166 * parv[1] = TS
167 * parv[2] = channel name
168 * parv[3] = modestring
169 */
170 static void
171 ms_tmode(struct Client *client_p, struct Client *source_p, int parc, char *parv[])
172 {
173 struct Channel *chptr = NULL;
174 struct Membership *member = NULL;
175
176 if ((chptr = hash_find_channel(parv[2])) == NULL)
177 {
178 sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
179 ID_or_name(&me, client_p), ID_or_name(source_p, client_p), parv[2]);
180 return;
181 }
182
183 if (atol(parv[1]) > chptr->channelts)
184 return;
185
186 if (IsServer(source_p))
187 set_channel_mode(client_p, source_p, chptr, NULL, parc - 3, parv + 3, chptr->chname);
188 else
189 {
190 member = find_channel_link(source_p, chptr);
191
192 /* XXX are we sure we just want to bail here? */
193 if (has_member_flags(member, CHFL_DEOPPED))
194 return;
195
196 set_channel_mode(client_p, source_p, chptr, member, parc - 3, parv + 3, chptr->chname);
197 }
198 }
199
200 /*
201 * ms_bmask()
202 *
203 * inputs - parv[0] = SID
204 * parv[1] = TS
205 * parv[2] = channel name
206 * parv[3] = type of ban to add ('b' 'I' or 'e')
207 * parv[4] = space delimited list of masks to add
208 * outputs - none
209 * side effects - propagates unchanged bmask line to CAP_TS6 servers,
210 * sends plain modes to the others. nothing is sent
211 * to the server the issuing server is connected through
212 */
213 static void
214 ms_bmask(struct Client *client_p, struct Client *source_p, int parc, char *parv[])
215 {
216 static char modebuf[IRCD_BUFSIZE];
217 static char parabuf[IRCD_BUFSIZE];
218 static char banbuf[IRCD_BUFSIZE];
219 struct Channel *chptr;
220 char *s, *t, *mbuf, *pbuf;
221 long mode_type;
222 int mlen, tlen;
223 int modecount = 0;
224 int needcap = NOCAPS;
225
226 if ((chptr = hash_find_channel(parv[2])) == NULL)
227 return;
228
229 /* TS is higher, drop it. */
230 if (atol(parv[1]) > chptr->channelts)
231 return;
232
233 switch (*parv[3])
234 {
235 case 'b':
236 mode_type = CHFL_BAN;
237 break;
238
239 case 'e':
240 mode_type = CHFL_EXCEPTION;
241 needcap = CAP_EX;
242 break;
243
244 case 'I':
245 mode_type = CHFL_INVEX;
246 needcap = CAP_IE;
247 break;
248
249 /* maybe we should just blindly propagate this? */
250 default:
251 return;
252 }
253
254 parabuf[0] = '\0';
255 s = banbuf;
256 strlcpy(s, parv[4], sizeof(banbuf));
257
258 /* only need to construct one buffer, for non-ts6 servers */
259 mlen = ircsprintf(modebuf, ":%s MODE %s +",
260 source_p->name, chptr->chname);
261 mbuf = modebuf + mlen;
262 pbuf = parabuf;
263
264 do {
265 if ((t = strchr(s, ' ')) != NULL)
266 *t++ = '\0';
267 tlen = strlen(s);
268
269 /* I dont even want to begin parsing this.. */
270 if (tlen > MODEBUFLEN)
271 break;
272
273 if (tlen && *s != ':' && add_id(source_p, chptr, s, mode_type))
274 {
275 /* this new one wont fit.. */
276 if (mbuf - modebuf + 2 + pbuf - parabuf + tlen > IRCD_BUFSIZE - 2 ||
277 modecount >= MAXMODEPARAMS)
278 {
279 *mbuf = '\0';
280 *(pbuf - 1) = '\0';
281
282 sendto_channel_local(ALL_MEMBERS, NO, chptr, "%s %s",
283 modebuf, parabuf);
284 sendto_server(client_p, chptr, needcap, CAP_TS6,
285 "%s %s", modebuf, parabuf);
286
287 mbuf = modebuf + mlen;
288 pbuf = parabuf;
289 modecount = 0;
290 }
291
292 *mbuf++ = parv[3][0];
293 pbuf += ircsprintf(pbuf, "%s ", s);
294 modecount++;
295 }
296
297 s = t;
298 } while (s != NULL);
299
300 if (modecount)
301 {
302 *mbuf = *(pbuf - 1) = '\0';
303 sendto_channel_local(ALL_MEMBERS, NO, chptr, "%s %s", modebuf, parabuf);
304 sendto_server(client_p, chptr, needcap, CAP_TS6,
305 "%s %s", modebuf, parabuf);
306 }
307
308 /* assumption here is that since the server sent BMASK, they are TS6, so they have an ID */
309 sendto_server(client_p, chptr, CAP_TS6|needcap, NOCAPS,
310 ":%s BMASK %lu %s %s :%s",
311 source_p->id, (unsigned long)chptr->channelts, chptr->chname,
312 parv[3], parv[4]);
313 }

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