]> jfr.im git - solanum.git/blame - src/supported.c
Remove s_assert definition from ircd_defs.h and add it to its own header.
[solanum.git] / src / supported.c
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1/*
2 * charybdis: A slightly useful ircd.
3 * supported.c: isupport (005) numeric
4 *
5 * Copyright (C) 2006 Jilles Tjoelker
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are
9 * met:
10 *
11 * 1.Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
13 * 2.Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3.The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
23 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
27 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
28 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 *
c614f4a9 31 * $Id: supported.c 3568 2007-09-09 18:59:08Z jilles $
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32 */
33
34/* From the old supported.h which is
35 * Copyright (C) 1996-2002 Hybrid Development Team
36 * Copyright (C) 2002-2004 ircd-ratbox development team
37 */
38/*
39 * - from mirc's versions.txt
40 *
41 * mIRC now supports the numeric 005 tokens: CHANTYPES=# and
42 * PREFIX=(ohv)@%+ and can handle a dynamic set of channel and
43 * nick prefixes.
44 *
45 * mIRC assumes that @ is supported on all networks, any mode
46 * left of @ is assumed to have at least equal power to @, and
47 * any mode right of @ has less power.
48 *
49 * mIRC has internal support for @%+ modes.
50 *
51 * $nick() can now handle all mode letters listed in PREFIX.
52 *
53 * Also added support for CHANMODES=A,B,C,D token (not currently
54 * supported by any servers), which lists all modes supported
55 * by a channel, where:
56 *
57 * A = modes that take a parameter, and add or remove nicks
58 * or addresses to a list, such as +bIe for the ban,
59 * invite, and exception lists.
60 *
61 * B = modes that change channel settings, but which take
62 * a parameter when they are set and unset, such as
63 * +k key, and -k key.
64 *
65 * C = modes that change channel settings, but which take
66 * a parameter only when they are set, such as +l N,
67 * and -l.
68 *
69 * D = modes that change channel settings, such as +imnpst
70 * and take no parameters.
71 *
72 * All unknown/unlisted modes are treated as type D.
73 */
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74
75#include "stdinc.h"
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76#include "client.h"
77#include "common.h"
78#include "numeric.h"
79#include "ircd.h"
80#include "s_conf.h"
294d32bf 81#include "s_user.h"
48a266e5 82#include "supported.h"
c18cb68b 83#include "chmode.h"
77d3d2db 84#include "send.h"
212380e3 85
330fc5c1 86rb_dlink_list isupportlist;
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87
88struct isupportitem
89{
90 const char *name;
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91 const char *(*func)(const void *);
92 const void *param;
330fc5c1 93 rb_dlink_node node;
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94};
95
96void
48a266e5 97add_isupport(const char *name, const char *(*func)(const void *), const void *param)
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98{
99 struct isupportitem *item;
100
eddc2ab6 101 item = rb_malloc(sizeof(struct isupportitem));
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102 item->name = name;
103 item->func = func;
104 item->param = param;
330fc5c1 105 rb_dlinkAddTail(item, &item->node, &isupportlist);
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106}
107
5d47bdca 108const void *
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109change_isupport(const char *name, const char *(*func)(const void *), const void *param)
110{
111 rb_dlink_node *ptr;
112 struct isupportitem *item;
eac04554 113 const void *oldvalue = NULL;
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114
115 RB_DLINK_FOREACH(ptr, isupportlist.head)
116 {
117 item = ptr->data;
118
119 if (!strcmp(item->name, name))
120 {
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121 oldvalue = item->param;
122
41d8802e 123 // item->name = name;
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124 item->func = func;
125 item->param = param;
126
127 break;
128 }
129 }
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130
131 return oldvalue;
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132}
133
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134void
135delete_isupport(const char *name)
136{
637c4932 137 rb_dlink_node *ptr, *next_ptr;
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138 struct isupportitem *item;
139
637c4932 140 RB_DLINK_FOREACH_SAFE(ptr, next_ptr, isupportlist.head)
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141 {
142 item = ptr->data;
143
144 if (!strcmp(item->name, name))
145 {
330fc5c1 146 rb_dlinkDelete(ptr, &isupportlist);
637c4932 147 rb_free(item);
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148 }
149 }
150}
151
152/* XXX caching? */
153void
154show_isupport(struct Client *client_p)
155{
330fc5c1 156 rb_dlink_node *ptr;
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157 struct isupportitem *item;
158 const char *value;
159 char buf[512];
160 int extra_space;
48a266e5 161 unsigned int nchars, nparams;
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162 int l;
163
164 extra_space = strlen(client_p->name);
165 /* UID */
166 if (!MyClient(client_p) && extra_space < 9)
167 extra_space = 9;
168 /* :<me.name> 005 <nick> <params> :are supported by this server */
169 /* form_str(RPL_ISUPPORT) is %s :are supported by this server */
170 extra_space += strlen(me.name) + 1 + strlen(form_str(RPL_ISUPPORT));
171
172 nchars = extra_space, nparams = 0, buf[0] = '\0';
5cefa1d6 173 RB_DLINK_FOREACH(ptr, isupportlist.head)
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174 {
175 item = ptr->data;
176 value = (*item->func)(item->param);
177 if (value == NULL)
178 continue;
179 l = strlen(item->name) + (EmptyString(value) ? 0 : 1 + strlen(value));
180 if (nchars + l + (nparams > 0) >= sizeof buf || nparams + 1 > 12)
181 {
182 sendto_one_numeric(client_p, RPL_ISUPPORT, form_str(RPL_ISUPPORT), buf);
183 nchars = extra_space, nparams = 0, buf[0] = '\0';
184 }
185 if (nparams > 0)
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186 rb_strlcat(buf, " ", sizeof buf), nchars++;
187 rb_strlcat(buf, item->name, sizeof buf);
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188 if (!EmptyString(value))
189 {
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190 rb_strlcat(buf, "=", sizeof buf);
191 rb_strlcat(buf, value, sizeof buf);
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192 }
193 nchars += l;
194 nparams++;
195 }
196 if (nparams > 0)
197 sendto_one_numeric(client_p, RPL_ISUPPORT, form_str(RPL_ISUPPORT), buf);
198}
199
200const char *
48a266e5 201isupport_intptr(const void *ptr)
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202{
203 static char buf[15];
b2f0da88 204 rb_snprintf(buf, sizeof buf, "%d", *(const int *)ptr);
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205 return buf;
206}
207
208const char *
48a266e5 209isupport_boolean(const void *ptr)
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210{
211
48a266e5 212 return *(const int *)ptr ? "" : NULL;
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213}
214
215const char *
48a266e5 216isupport_string(const void *ptr)
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217{
218
219 return (const char *)ptr;
220}
221
222const char *
48a266e5 223isupport_stringptr(const void *ptr)
212380e3 224{
48a266e5 225 return *(char * const *)ptr;
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226}
227
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228static const char *
229isupport_umode(const void *ptr)
230{
231 const char *str;
232
233 str = ptr;
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234 return ConfigFileEntry.oper_only_umodes &
235 user_modes[(unsigned char)*str] ? NULL : str;
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236}
237
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238static const char *
239isupport_chanmodes(const void *ptr)
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240{
241 static char result[80];
242
2da6f6eb 243 rb_snprintf(result, sizeof result, "%s%sbq,k,%slj,%s",
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244 ConfigChannel.use_except ? "e" : "",
245 ConfigChannel.use_invex ? "I" : "",
2da6f6eb 246 ConfigChannel.use_forward ? "f" : "",
c18cb68b 247 cflagsbuf);
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248 return result;
249}
250
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251static const char *
252isupport_chantypes(const void *ptr)
253{
254 return ConfigChannel.disable_local_channels ? "#" : "&#";
255}
256
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257static const char *
258isupport_chanlimit(const void *ptr)
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259{
260 static char result[30];
261
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262 rb_snprintf(result, sizeof result, "%s:%i",
263 ConfigChannel.disable_local_channels ? "#" : "&#", ConfigChannel.max_chans_per_user);
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264 return result;
265}
266
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267static const char *
268isupport_maxlist(const void *ptr)
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269{
270 static char result[30];
271
b2f0da88 272 rb_snprintf(result, sizeof result, "bq%s%s:%i",
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273 ConfigChannel.use_except ? "e" : "",
274 ConfigChannel.use_invex ? "I" : "",
275 ConfigChannel.max_bans);
276 return result;
277}
278
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279static const char *
280isupport_targmax(const void *ptr)
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281{
282 static char result[200];
283
b2f0da88 284 rb_snprintf(result, sizeof result, "NAMES:1,LIST:1,KICK:1,WHOIS:1,PRIVMSG:%d,NOTICE:%d,ACCEPT:,MONITOR:",
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285 ConfigFileEntry.max_targets,
286 ConfigFileEntry.max_targets);
287 return result;
288}
289
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290static const char *
291isupport_extban(const void *ptr)
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292{
293 const char *p;
294 static char result[200];
295
296 p = get_extban_string();
297 if (EmptyString(p))
298 return NULL;
b2f0da88 299 rb_snprintf(result, sizeof result, "$,%s", p);
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300 return result;
301}
302
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303static const char *
304isupport_nicklen(const void *ptr)
305{
306 static char result[200];
307
308 rb_snprintf(result, sizeof result, "%u", ConfigFileEntry.nicklen - 1);
309 return result;
310}
311
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312void
313init_isupport(void)
314{
315 static int maxmodes = MAXMODEPARAMS;
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316 static int channellen = LOC_CHANNELLEN;
317 static int topiclen = TOPICLEN;
c68d30f7 318 static int maxnicklen = NICKLEN - 1;
212380e3 319
341f971e 320 add_isupport("CHANTYPES", isupport_chantypes, NULL);
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321 add_isupport("EXCEPTS", isupport_boolean, &ConfigChannel.use_except);
322 add_isupport("INVEX", isupport_boolean, &ConfigChannel.use_invex);
323 add_isupport("CHANMODES", isupport_chanmodes, NULL);
324 add_isupport("CHANLIMIT", isupport_chanlimit, NULL);
325 add_isupport("PREFIX", isupport_string, "(ov)@+");
326 add_isupport("MAXLIST", isupport_maxlist, NULL);
327 add_isupport("MODES", isupport_intptr, &maxmodes);
328 add_isupport("NETWORK", isupport_stringptr, &ServerInfo.network_name);
329 add_isupport("KNOCK", isupport_boolean, &ConfigChannel.use_knock);
330 add_isupport("STATUSMSG", isupport_string, "@+");
294d32bf 331 add_isupport("CALLERID", isupport_umode, "g");
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332 add_isupport("CASEMAPPING", isupport_string, "rfc1459");
333 add_isupport("CHARSET", isupport_string, "ascii");
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334 add_isupport("NICKLEN", isupport_nicklen, NULL);
335 add_isupport("MAXNICKLEN", isupport_intptr, &maxnicklen);
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336 add_isupport("CHANNELLEN", isupport_intptr, &channellen);
337 add_isupport("TOPICLEN", isupport_intptr, &topiclen);
338 add_isupport("ETRACE", isupport_string, "");
339 add_isupport("CPRIVMSG", isupport_string, "");
340 add_isupport("CNOTICE", isupport_string, "");
294d32bf 341 add_isupport("DEAF", isupport_umode, "D");
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342 add_isupport("MONITOR", isupport_intptr, &ConfigFileEntry.max_monitor);
343 add_isupport("FNC", isupport_string, "");
344 add_isupport("TARGMAX", isupport_targmax, NULL);
345 add_isupport("EXTBAN", isupport_extban, NULL);
ffe4e4ae 346 add_isupport("WHOX", isupport_string, "");
bde6442c 347 add_isupport("CLIENTVER", isupport_string, "3.0");
212380e3 348}