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189935b1 | 1 | /* |
2 | * IRC - Internet Relay Chat, ircd/m_mode.c | |
3 | * Copyright (C) 1990 Jarkko Oikarinen and | |
4 | * University of Oulu, Computing Center | |
5 | * | |
6 | * See file AUTHORS in IRC package for additional names of | |
7 | * the programmers. | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 1, or (at your option) | |
12 | * any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
22 | * | |
9f8856e9 | 23 | * $Id: m_mode.c,v 1.15.2.3 2006/03/18 15:52:58 entrope Exp $ |
189935b1 | 24 | */ |
25 | ||
26 | /* | |
27 | * m_functions execute protocol messages on this server: | |
28 | * | |
29 | * cptr is always NON-NULL, pointing to a *LOCAL* client | |
30 | * structure (with an open socket connected!). This | |
31 | * identifies the physical socket where the message | |
32 | * originated (or which caused the m_function to be | |
33 | * executed--some m_functions may call others...). | |
34 | * | |
35 | * sptr is the source of the message, defined by the | |
36 | * prefix part of the message if present. If not | |
37 | * or prefix not found, then sptr==cptr. | |
38 | * | |
39 | * (!IsServer(cptr)) => (cptr == sptr), because | |
40 | * prefixes are taken *only* from servers... | |
41 | * | |
42 | * (IsServer(cptr)) | |
43 | * (sptr == cptr) => the message didn't | |
44 | * have the prefix. | |
45 | * | |
46 | * (sptr != cptr && IsServer(sptr) means | |
47 | * the prefix specified servername. (?) | |
48 | * | |
49 | * (sptr != cptr && !IsServer(sptr) means | |
50 | * that message originated from a remote | |
51 | * user (not local). | |
52 | * | |
53 | * combining | |
54 | * | |
55 | * (!IsServer(sptr)) means that, sptr can safely | |
56 | * taken as defining the target structure of the | |
57 | * message in this server. | |
58 | * | |
59 | * *Always* true (if 'parse' and others are working correct): | |
60 | * | |
61 | * 1) sptr->from == cptr (note: cptr->from == cptr) | |
62 | * | |
63 | * 2) MyConnect(sptr) <=> sptr == cptr (e.g. sptr | |
64 | * *cannot* be a local connection, unless it's | |
65 | * actually cptr!). [MyConnect(x) should probably | |
66 | * be defined as (x == x->from) --msa ] | |
67 | * | |
68 | * parc number of variable parameter strings (if zero, | |
69 | * parv is allowed to be NULL) | |
70 | * | |
71 | * parv a NULL terminated list of parameter pointers, | |
72 | * | |
73 | * parv[0], sender (prefix string), if not present | |
74 | * this points to an empty string. | |
75 | * parv[1]...parv[parc-1] | |
76 | * pointers to additional parameters | |
77 | * parv[parc] == NULL, *always* | |
78 | * | |
79 | * note: it is guaranteed that parv[0]..parv[parc-1] are all | |
80 | * non-NULL pointers. | |
81 | */ | |
82 | #include "config.h" | |
83 | ||
84 | #include "handlers.h" | |
85 | #include "channel.h" | |
86 | #include "client.h" | |
87 | #include "hash.h" | |
88 | #include "ircd.h" | |
9f8856e9 | 89 | #include "ircd_features.h" |
189935b1 | 90 | #include "ircd_log.h" |
91 | #include "ircd_reply.h" | |
92 | #include "ircd_string.h" | |
93 | #include "msg.h" | |
94 | #include "numeric.h" | |
95 | #include "numnicks.h" | |
96 | #include "s_conf.h" | |
97 | #include "s_debug.h" | |
98 | #include "s_user.h" | |
99 | #include "send.h" | |
100 | ||
101 | /* #include <assert.h> -- Now using assert in ircd_log.h */ | |
102 | #include <stdlib.h> | |
103 | #include <string.h> | |
104 | ||
105 | int | |
106 | m_mode(struct Client *cptr, struct Client *sptr, int parc, char *parv[]) | |
107 | { | |
108 | struct Channel *chptr = 0; | |
109 | struct ModeBuf mbuf; | |
110 | struct Membership *member; | |
111 | ||
112 | if (parc < 2) | |
113 | return need_more_params(sptr, "MODE"); | |
114 | ||
115 | if (!IsChannelName(parv[1]) || !(chptr = FindChannel(parv[1]))) | |
116 | return set_user_mode(cptr, sptr, parc, parv); | |
117 | ||
118 | ClrFlag(sptr, FLAG_TS8); | |
119 | ||
120 | member = find_member_link(chptr, sptr); | |
121 | ||
122 | if (parc < 3) { | |
123 | char modebuf[MODEBUFLEN]; | |
124 | char parabuf[MODEBUFLEN]; | |
125 | ||
126 | *modebuf = *parabuf = '\0'; | |
127 | modebuf[1] = '\0'; | |
128 | channel_modes(sptr, modebuf, parabuf, sizeof(parabuf), chptr, member); | |
129 | send_reply(sptr, RPL_CHANNELMODEIS, chptr->chname, modebuf, parabuf); | |
130 | send_reply(sptr, RPL_CREATIONTIME, chptr->chname, chptr->creationtime); | |
131 | return 0; | |
132 | } | |
133 | ||
134 | if (!member || !IsChanOp(member)) { | |
135 | if (IsLocalChannel(chptr->chname) && HasPriv(sptr, PRIV_MODE_LCHAN)) { | |
136 | modebuf_init(&mbuf, sptr, cptr, chptr, | |
137 | (MODEBUF_DEST_CHANNEL | /* Send mode to channel */ | |
138 | MODEBUF_DEST_HACK4)); /* Send HACK(4) notice */ | |
139 | mode_parse(&mbuf, cptr, sptr, chptr, parc - 2, parv + 2, | |
140 | (MODE_PARSE_SET | /* Set the mode */ | |
141 | MODE_PARSE_FORCE), /* Force it to take */ | |
142 | member); | |
143 | return modebuf_flush(&mbuf); | |
144 | } else | |
145 | mode_parse(0, cptr, sptr, chptr, parc - 2, parv + 2, | |
146 | (member ? MODE_PARSE_NOTOPER : MODE_PARSE_NOTMEMBER), member); | |
147 | return 0; | |
148 | } | |
149 | ||
150 | modebuf_init(&mbuf, sptr, cptr, chptr, | |
151 | (MODEBUF_DEST_CHANNEL | /* Send mode to channel */ | |
152 | MODEBUF_DEST_SERVER)); /* Send mode to servers */ | |
153 | mode_parse(&mbuf, cptr, sptr, chptr, parc - 2, parv + 2, MODE_PARSE_SET, member); | |
154 | return modebuf_flush(&mbuf); | |
155 | } | |
156 | ||
157 | int | |
158 | ms_mode(struct Client *cptr, struct Client *sptr, int parc, char *parv[]) | |
159 | { | |
160 | struct Channel *chptr = 0; | |
161 | struct ModeBuf mbuf; | |
162 | struct Membership *member; | |
163 | ||
164 | if (parc < 3) | |
165 | return need_more_params(sptr, "MODE"); | |
166 | ||
167 | if (IsLocalChannel(parv[1])) | |
168 | return 0; | |
169 | ||
170 | if (!(chptr = FindChannel(parv[1]))) | |
171 | return set_user_mode(cptr, sptr, parc, parv); | |
172 | ||
173 | ClrFlag(sptr, FLAG_TS8); | |
174 | ||
175 | if (IsServer(sptr)) { | |
176 | if (find_conf_byhost(cli_confs(cptr), cli_name(sptr), CONF_UWORLD)) | |
177 | modebuf_init(&mbuf, sptr, cptr, chptr, | |
178 | (MODEBUF_DEST_CHANNEL | /* Send mode to clients */ | |
179 | MODEBUF_DEST_SERVER | /* Send mode to servers */ | |
180 | MODEBUF_DEST_HACK4)); /* Send a HACK(4) message */ | |
9f8856e9 | 181 | else if (!feature_bool(FEAT_OPLEVELS)) |
182 | modebuf_init(&mbuf, sptr, cptr, chptr, | |
183 | (MODEBUF_DEST_CHANNEL | /* Send mode to clients */ | |
184 | MODEBUF_DEST_SERVER | /* Send mode to servers */ | |
185 | MODEBUF_DEST_HACK3)); /* Send a HACK(3) message */ | |
189935b1 | 186 | else |
187 | /* Servers need to be able to op people who join using the Apass | |
9f8856e9 | 188 | * or upass, as well as people joining a zannel, therefore we do |
189 | * not generate HACK3 when oplevels are on. */ | |
189935b1 | 190 | modebuf_init(&mbuf, sptr, cptr, chptr, |
191 | (MODEBUF_DEST_CHANNEL | /* Send mode to clients */ | |
052b069e | 192 | MODEBUF_DEST_SERVER)); /* Send mode to servers */ |
189935b1 | 193 | |
194 | mode_parse(&mbuf, cptr, sptr, chptr, parc - 2, parv + 2, | |
195 | (MODE_PARSE_SET | /* Set the mode */ | |
196 | MODE_PARSE_STRICT | /* Interpret it strictly */ | |
197 | MODE_PARSE_FORCE), /* And force it to be accepted */ | |
198 | NULL); | |
199 | } else { | |
9f8856e9 | 200 | if (!(member = find_member_link(chptr, sptr))) { |
189935b1 | 201 | modebuf_init(&mbuf, sptr, cptr, chptr, |
202 | (MODEBUF_DEST_SERVER | /* Send mode to server */ | |
203 | MODEBUF_DEST_HACK2 | /* Send a HACK(2) message */ | |
204 | MODEBUF_DEST_DEOP | /* Deop the source */ | |
205 | MODEBUF_DEST_BOUNCE)); /* And bounce the MODE */ | |
206 | mode_parse(&mbuf, cptr, sptr, chptr, parc - 2, parv + 2, | |
207 | (MODE_PARSE_STRICT | /* Interpret it strictly */ | |
208 | MODE_PARSE_BOUNCE), /* And bounce the MODE */ | |
209 | member); | |
210 | } else { | |
211 | modebuf_init(&mbuf, sptr, cptr, chptr, | |
212 | (MODEBUF_DEST_CHANNEL | /* Send mode to clients */ | |
213 | MODEBUF_DEST_SERVER)); /* Send mode to servers */ | |
214 | mode_parse(&mbuf, cptr, sptr, chptr, parc - 2, parv + 2, | |
215 | (MODE_PARSE_SET | /* Set the mode */ | |
216 | MODE_PARSE_STRICT | /* Interpret it strictly */ | |
217 | MODE_PARSE_FORCE), /* And force it to be accepted */ | |
218 | member); | |
219 | } | |
220 | } | |
221 | ||
222 | return modebuf_flush(&mbuf); | |
223 | } |