/[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 1028 - (show annotations)
Sun Nov 8 13:03:38 2009 UTC (11 years, 5 months ago) by michael
File MIME type: text/x-chdr
File size: 8257 byte(s)
- move ircd-hybrid-7.2 to trunk

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 "list.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
45 static void m_mode(struct Client *, struct Client *, int, char *[]);
46 static void ms_tmode(struct Client *, struct Client *, int, char *[]);
47 static void ms_bmask(struct Client *, struct Client *, int, char *[]);
48
49 struct Message mode_msgtab = {
50 "MODE", 0, 0, 2, 0, MFLG_SLOW, 0,
51 {m_unregistered, m_mode, m_mode, m_ignore, m_mode, m_ignore}
52 };
53
54 struct Message tmode_msgtab = {
55 "TMODE", 0, 0, 4, 0, MFLG_SLOW, 0,
56 {m_ignore, m_ignore, ms_tmode, m_ignore, m_ignore, m_ignore}
57 };
58
59 struct Message bmask_msgtab = {
60 "BMASK", 0, 0, 5, 0, MFLG_SLOW, 0,
61 {m_ignore, m_ignore, ms_bmask, m_ignore, m_ignore, m_ignore}
62 };
63
64 #ifndef STATIC_MODULES
65 void
66 _modinit(void)
67 {
68 mod_add_cmd(&mode_msgtab);
69 mod_add_cmd(&tmode_msgtab);
70 mod_add_cmd(&bmask_msgtab);
71 }
72
73 void
74 _moddeinit(void)
75 {
76 mod_del_cmd(&mode_msgtab);
77 mod_del_cmd(&tmode_msgtab);
78 mod_del_cmd(&bmask_msgtab);
79 }
80
81 const char *_version = "$Revision$";
82 #endif
83
84 /*
85 * m_mode - MODE command handler
86 * parv[0] - sender
87 * parv[1] - channel
88 */
89 static void
90 m_mode(struct Client *client_p, struct Client *source_p,
91 int parc, char *parv[])
92 {
93 struct Channel *chptr = NULL;
94 struct Membership *member;
95 static char modebuf[MODEBUFLEN];
96 static char parabuf[MODEBUFLEN];
97
98 if (EmptyString(parv[1]))
99 {
100 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
101 me.name, source_p->name, "MODE");
102 return;
103 }
104
105 /* Now, try to find the channel in question */
106 if (!IsChanPrefix(*parv[1]))
107 {
108 /* if here, it has to be a non-channel name */
109 set_user_mode(client_p, source_p, parc, parv);
110 return;
111 }
112
113 if ((chptr = hash_find_channel(parv[1])) == NULL)
114 {
115 sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
116 ID_or_name(&me, source_p->from),
117 ID_or_name(source_p, source_p->from),
118 parv[1]);
119 return;
120 }
121
122 /* Now known the channel exists */
123 if (parc < 3)
124 {
125 channel_modes(chptr, source_p, modebuf, parabuf);
126 sendto_one(source_p, form_str(RPL_CHANNELMODEIS),
127 me.name, source_p->name, chptr->chname, modebuf, parabuf);
128 sendto_one(source_p, form_str(RPL_CREATIONTIME),
129 me.name, source_p->name, chptr->chname, chptr->channelts);
130 }
131 /* bounce all modes from people we deop on sjoin
132 * servers have always gotten away with murder,
133 * including telnet servers *g* - Dianora
134 *
135 * XXX Is it worth the bother to make an ms_mode() ? - Dianora
136 */
137 else if (IsServer(source_p))
138 {
139 set_channel_mode(client_p, source_p, chptr, NULL, parc - 2, parv + 2,
140 chptr->chname);
141 }
142 else
143 {
144 member = find_channel_link(source_p, chptr);
145
146 if (!has_member_flags(member, CHFL_DEOPPED))
147 {
148 /* Finish the flood grace period... */
149 if (MyClient(source_p) && !IsFloodDone(source_p))
150 {
151 if (!((parc == 3) && (parv[2][0] == 'b') && (parv[2][1] == '\0')))
152 flood_endgrace(source_p);
153 }
154
155 set_channel_mode(client_p, source_p, chptr, member, parc - 2, parv + 2,
156 chptr->chname);
157 }
158 }
159 }
160
161 /*
162 * ms_tmode()
163 *
164 * inputs - parv[0] = UID
165 * parv[1] = TS
166 * parv[2] = channel name
167 * parv[3] = modestring
168 */
169 static void
170 ms_tmode(struct Client *client_p, struct Client *source_p, int parc, char *parv[])
171 {
172 struct Channel *chptr = NULL;
173 struct Membership *member = NULL;
174
175 if ((chptr = hash_find_channel(parv[2])) == NULL)
176 {
177 sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
178 ID_or_name(&me, client_p), ID_or_name(source_p, client_p), parv[2]);
179 return;
180 }
181
182 if (atol(parv[1]) > chptr->channelts)
183 return;
184
185 if (IsServer(source_p))
186 set_channel_mode(client_p, source_p, chptr, NULL, parc - 3, parv + 3, chptr->chname);
187 else
188 {
189 member = find_channel_link(source_p, chptr);
190
191 /* XXX are we sure we just want to bail here? */
192 if (has_member_flags(member, CHFL_DEOPPED))
193 return;
194
195 set_channel_mode(client_p, source_p, chptr, member, parc - 3, parv + 3, chptr->chname);
196 }
197 }
198
199 /*
200 * ms_bmask()
201 *
202 * inputs - parv[0] = SID
203 * parv[1] = TS
204 * parv[2] = channel name
205 * parv[3] = type of ban to add ('b' 'I' or 'e')
206 * parv[4] = space delimited list of masks to add
207 * outputs - none
208 * side effects - propagates unchanged bmask line to CAP_TS6 servers,
209 * sends plain modes to the others. nothing is sent
210 * to the server the issuing server is connected through
211 */
212 static void
213 ms_bmask(struct Client *client_p, struct Client *source_p, int parc, char *parv[])
214 {
215 static char modebuf[IRCD_BUFSIZE];
216 static char parabuf[IRCD_BUFSIZE];
217 static char banbuf[IRCD_BUFSIZE];
218 struct Channel *chptr;
219 char *s, *t, *mbuf, *pbuf;
220 long mode_type;
221 int mlen, tlen;
222 int modecount = 0;
223 int needcap = NOCAPS;
224
225 if ((chptr = hash_find_channel(parv[2])) == NULL)
226 return;
227
228 /* TS is higher, drop it. */
229 if (atol(parv[1]) > chptr->channelts)
230 return;
231
232 switch (*parv[3])
233 {
234 case 'b':
235 mode_type = CHFL_BAN;
236 break;
237
238 case 'e':
239 mode_type = CHFL_EXCEPTION;
240 needcap = CAP_EX;
241 break;
242
243 case 'I':
244 mode_type = CHFL_INVEX;
245 needcap = CAP_IE;
246 break;
247
248 /* maybe we should just blindly propagate this? */
249 default:
250 return;
251 }
252
253 parabuf[0] = '\0';
254 s = banbuf;
255 strlcpy(s, parv[4], sizeof(banbuf));
256
257 /* only need to construct one buffer, for non-ts6 servers */
258 mlen = ircsprintf(modebuf, ":%s MODE %s +",
259 source_p->name, chptr->chname);
260 mbuf = modebuf + mlen;
261 pbuf = parabuf;
262
263 do {
264 if ((t = strchr(s, ' ')) != NULL)
265 *t++ = '\0';
266 tlen = strlen(s);
267
268 /* I dont even want to begin parsing this.. */
269 if (tlen > MODEBUFLEN)
270 break;
271
272 if (tlen && *s != ':' && add_id(source_p, chptr, s, mode_type))
273 {
274 /* this new one wont fit.. */
275 if (mbuf - modebuf + 2 + pbuf - parabuf + tlen > IRCD_BUFSIZE - 2 ||
276 modecount >= MAXMODEPARAMS)
277 {
278 *mbuf = '\0';
279 *(pbuf - 1) = '\0';
280
281 sendto_channel_local(ALL_MEMBERS, 0, chptr, "%s %s",
282 modebuf, parabuf);
283 sendto_server(client_p, chptr, needcap, CAP_TS6,
284 "%s %s", modebuf, parabuf);
285
286 mbuf = modebuf + mlen;
287 pbuf = parabuf;
288 modecount = 0;
289 }
290
291 *mbuf++ = parv[3][0];
292 pbuf += ircsprintf(pbuf, "%s ", s);
293 modecount++;
294 }
295
296 s = t;
297 } while (s != NULL);
298
299 if (modecount)
300 {
301 *mbuf = *(pbuf - 1) = '\0';
302 sendto_channel_local(ALL_MEMBERS, 0, chptr, "%s %s", modebuf, parabuf);
303 sendto_server(client_p, chptr, needcap, CAP_TS6,
304 "%s %s", modebuf, parabuf);
305 }
306
307 /* assumption here is that since the server sent BMASK, they are TS6, so they have an ID */
308 sendto_server(client_p, chptr, CAP_TS6|needcap, NOCAPS,
309 ":%s BMASK %lu %s %s :%s",
310 source_p->id, (unsigned long)chptr->channelts, chptr->chname,
311 parv[3], parv[4]);
312 }

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