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1 | /* | |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * class.c: Controls connection classes. | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2002-2005 ircd-ratbox development team | |
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 2 of the License, or | |
12 | * (at your option) 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
22 | * USA | |
23 | * | |
24 | * $Id: class.c 254 2005-09-21 23:35:12Z nenolod $ | |
25 | */ | |
26 | ||
27 | #include "stdinc.h" | |
28 | #include "config.h" | |
29 | ||
30 | #include "tools.h" | |
31 | #include "class.h" | |
32 | #include "client.h" | |
33 | #include "common.h" | |
34 | #include "ircd.h" | |
35 | #include "numeric.h" | |
36 | #include "s_conf.h" | |
37 | #include "s_newconf.h" | |
38 | #include "send.h" | |
39 | #include "irc_string.h" | |
40 | #include "memory.h" | |
41 | ||
42 | #define BAD_CONF_CLASS -1 | |
43 | #define BAD_PING -2 | |
44 | #define BAD_CLIENT_CLASS -3 | |
45 | ||
46 | rb_dlink_list class_list; | |
47 | struct Class *default_class; | |
48 | ||
49 | struct Class * | |
50 | make_class(void) | |
51 | { | |
52 | struct Class *tmp; | |
53 | ||
54 | tmp = (struct Class *) MyMalloc(sizeof(struct Class)); | |
55 | ||
56 | ConFreq(tmp) = DEFAULT_CONNECTFREQUENCY; | |
57 | PingFreq(tmp) = DEFAULT_PINGFREQUENCY; | |
58 | MaxUsers(tmp) = 1; | |
59 | MaxSendq(tmp) = DEFAULT_SENDQ; | |
60 | ||
61 | tmp->ip_limits = rb_new_patricia(PATRICIA_BITS); | |
62 | return tmp; | |
63 | } | |
64 | ||
65 | void | |
66 | free_class(struct Class *tmp) | |
67 | { | |
68 | if(tmp->ip_limits) | |
69 | rb_destroy_patricia(tmp->ip_limits, NULL); | |
70 | ||
71 | MyFree(tmp->class_name); | |
72 | MyFree(tmp); | |
73 | ||
74 | } | |
75 | ||
76 | /* | |
77 | * get_conf_ping | |
78 | * | |
79 | * inputs - pointer to struct ConfItem | |
80 | * output - ping frequency | |
81 | * side effects - NONE | |
82 | */ | |
83 | static int | |
84 | get_conf_ping(struct ConfItem *aconf) | |
85 | { | |
86 | if((aconf) && ClassPtr(aconf)) | |
87 | return (ConfPingFreq(aconf)); | |
88 | ||
89 | return (BAD_PING); | |
90 | } | |
91 | ||
92 | /* | |
93 | * get_client_class | |
94 | * | |
95 | * inputs - pointer to client struct | |
96 | * output - pointer to name of class | |
97 | * side effects - NONE | |
98 | */ | |
99 | const char * | |
100 | get_client_class(struct Client *target_p) | |
101 | { | |
102 | const char *retc = "unknown"; | |
103 | ||
104 | if(target_p == NULL || IsMe(target_p)) | |
105 | return retc; | |
106 | ||
107 | if(IsServer(target_p)) | |
108 | { | |
109 | struct server_conf *server_p = target_p->localClient->att_sconf; | |
110 | return server_p->class_name; | |
111 | } | |
112 | else | |
113 | { | |
114 | struct ConfItem *aconf; | |
115 | aconf = target_p->localClient->att_conf; | |
116 | ||
117 | if((aconf == NULL) || (aconf->className == NULL)) | |
118 | retc = "default"; | |
119 | else | |
120 | retc = aconf->className; | |
121 | } | |
122 | ||
123 | return (retc); | |
124 | } | |
125 | ||
126 | /* | |
127 | * get_client_ping | |
128 | * | |
129 | * inputs - pointer to client struct | |
130 | * output - ping frequency | |
131 | * side effects - NONE | |
132 | */ | |
133 | int | |
134 | get_client_ping(struct Client *target_p) | |
135 | { | |
136 | int ping = 0; | |
137 | ||
138 | if(IsServer(target_p)) | |
139 | { | |
140 | struct server_conf *server_p = target_p->localClient->att_sconf; | |
141 | ping = PingFreq(server_p->class); | |
142 | } | |
143 | else | |
144 | { | |
145 | struct ConfItem *aconf; | |
146 | ||
147 | aconf = target_p->localClient->att_conf; | |
148 | ||
149 | if(aconf != NULL) | |
150 | ping = get_conf_ping(aconf); | |
151 | else | |
152 | ping = DEFAULT_PINGFREQUENCY; | |
153 | } | |
154 | ||
155 | if(ping <= 0) | |
156 | ping = DEFAULT_PINGFREQUENCY; | |
157 | ||
158 | return ping; | |
159 | } | |
160 | ||
161 | /* | |
162 | * get_con_freq | |
163 | * | |
164 | * inputs - pointer to class struct | |
165 | * output - connection frequency | |
166 | * side effects - NONE | |
167 | */ | |
168 | int | |
169 | get_con_freq(struct Class *clptr) | |
170 | { | |
171 | if(clptr) | |
172 | return (ConFreq(clptr)); | |
173 | return (DEFAULT_CONNECTFREQUENCY); | |
174 | } | |
175 | ||
176 | /* add_class() | |
177 | * | |
178 | * input - class to add | |
179 | * output - | |
180 | * side effects - class is added to class_list if new, else old class | |
181 | * is updated with new values. | |
182 | */ | |
183 | void | |
184 | add_class(struct Class *classptr) | |
185 | { | |
186 | struct Class *tmpptr; | |
187 | ||
188 | tmpptr = find_class(classptr->class_name); | |
189 | ||
190 | if(tmpptr == default_class) | |
191 | { | |
192 | rb_dlinkAddAlloc(classptr, &class_list); | |
193 | CurrUsers(classptr) = 0; | |
194 | } | |
195 | else | |
196 | { | |
197 | MaxUsers(tmpptr) = MaxUsers(classptr); | |
198 | MaxLocal(tmpptr) = MaxLocal(classptr); | |
199 | MaxGlobal(tmpptr) = MaxGlobal(classptr); | |
200 | MaxIdent(tmpptr) = MaxIdent(classptr); | |
201 | PingFreq(tmpptr) = PingFreq(classptr); | |
202 | MaxSendq(tmpptr) = MaxSendq(classptr); | |
203 | ConFreq(tmpptr) = ConFreq(classptr); | |
204 | CidrBitlen(tmpptr) = CidrBitlen(classptr); | |
205 | CidrAmount(tmpptr) = CidrAmount(classptr); | |
206 | ||
207 | free_class(classptr); | |
208 | } | |
209 | } | |
210 | ||
211 | ||
212 | /* | |
213 | * find_class | |
214 | * | |
215 | * inputs - string name of class | |
216 | * output - corresponding class pointer | |
217 | * side effects - NONE | |
218 | */ | |
219 | struct Class * | |
220 | find_class(const char *classname) | |
221 | { | |
222 | struct Class *cltmp; | |
223 | rb_dlink_node *ptr; | |
224 | ||
225 | if(classname == NULL) | |
226 | return default_class; | |
227 | ||
228 | RB_DLINK_FOREACH(ptr, class_list.head) | |
229 | { | |
230 | cltmp = ptr->data; | |
231 | ||
232 | if(!strcmp(ClassName(cltmp), classname)) | |
233 | return cltmp; | |
234 | } | |
235 | ||
236 | return default_class; | |
237 | } | |
238 | ||
239 | /* | |
240 | * check_class | |
241 | * | |
242 | * inputs - NONE | |
243 | * output - NONE | |
244 | * side effects - | |
245 | */ | |
246 | void | |
247 | check_class() | |
248 | { | |
249 | struct Class *cltmp; | |
250 | rb_dlink_node *ptr; | |
251 | rb_dlink_node *next_ptr; | |
252 | ||
253 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, class_list.head) | |
254 | { | |
255 | cltmp = ptr->data; | |
256 | ||
257 | if(MaxUsers(cltmp) < 0) | |
258 | { | |
259 | rb_dlinkDestroy(ptr, &class_list); | |
260 | if(CurrUsers(cltmp) <= 0) | |
261 | free_class(cltmp); | |
262 | } | |
263 | } | |
264 | } | |
265 | ||
266 | /* | |
267 | * initclass | |
268 | * | |
269 | * inputs - NONE | |
270 | * output - NONE | |
271 | * side effects - | |
272 | */ | |
273 | void | |
274 | initclass() | |
275 | { | |
276 | default_class = make_class(); | |
277 | DupString(ClassName(default_class), "default"); | |
278 | } | |
279 | ||
280 | /* | |
281 | * report_classes | |
282 | * | |
283 | * inputs - pointer to client to report to | |
284 | * output - NONE | |
285 | * side effects - class report is done to this client | |
286 | */ | |
287 | void | |
288 | report_classes(struct Client *source_p) | |
289 | { | |
290 | struct Class *cltmp; | |
291 | rb_dlink_node *ptr; | |
292 | ||
293 | RB_DLINK_FOREACH(ptr, class_list.head) | |
294 | { | |
295 | cltmp = ptr->data; | |
296 | ||
297 | sendto_one_numeric(source_p, RPL_STATSYLINE, | |
298 | form_str(RPL_STATSYLINE), | |
299 | ClassName(cltmp), PingFreq(cltmp), | |
300 | ConFreq(cltmp), MaxUsers(cltmp), | |
301 | MaxSendq(cltmp), | |
302 | MaxLocal(cltmp), MaxIdent(cltmp), | |
303 | MaxGlobal(cltmp), MaxIdent(cltmp), | |
304 | CurrUsers(cltmp)); | |
305 | } | |
306 | ||
307 | /* also output the default class */ | |
308 | sendto_one_numeric(source_p, RPL_STATSYLINE, form_str(RPL_STATSYLINE), | |
309 | ClassName(default_class), PingFreq(default_class), | |
310 | ConFreq(default_class), MaxUsers(default_class), | |
311 | MaxSendq(default_class), | |
312 | MaxLocal(default_class), MaxIdent(default_class), | |
313 | MaxGlobal(default_class), MaxIdent(default_class), | |
314 | CurrUsers(default_class)); | |
315 | } | |
316 | ||
317 | /* | |
318 | * get_sendq | |
319 | * | |
320 | * inputs - pointer to client | |
321 | * output - sendq for this client as found from its class | |
322 | * side effects - NONE | |
323 | */ | |
324 | long | |
325 | get_sendq(struct Client *client_p) | |
326 | { | |
327 | if(client_p == NULL || IsMe(client_p)) | |
328 | return DEFAULT_SENDQ; | |
329 | ||
330 | if(IsServer(client_p)) | |
331 | { | |
332 | struct server_conf *server_p; | |
333 | server_p = client_p->localClient->att_sconf; | |
334 | return MaxSendq(server_p->class); | |
335 | } | |
336 | else | |
337 | { | |
338 | struct ConfItem *aconf = client_p->localClient->att_conf; | |
339 | ||
340 | if(aconf != NULL && aconf->status & CONF_CLIENT) | |
341 | return ConfMaxSendq(aconf); | |
342 | } | |
343 | ||
344 | return DEFAULT_SENDQ; | |
345 | } |