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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 | #include "patricia.h" | |
42 | ||
43 | #define BAD_CONF_CLASS -1 | |
44 | #define BAD_PING -2 | |
45 | #define BAD_CLIENT_CLASS -3 | |
46 | ||
47 | dlink_list class_list; | |
48 | struct Class *default_class; | |
49 | ||
50 | struct Class * | |
51 | make_class(void) | |
52 | { | |
53 | struct Class *tmp; | |
54 | ||
55 | tmp = (struct Class *) MyMalloc(sizeof(struct Class)); | |
56 | ||
57 | ConFreq(tmp) = DEFAULT_CONNECTFREQUENCY; | |
58 | PingFreq(tmp) = DEFAULT_PINGFREQUENCY; | |
59 | MaxUsers(tmp) = 1; | |
60 | MaxSendq(tmp) = DEFAULT_SENDQ; | |
61 | ||
62 | tmp->ip_limits = New_Patricia(PATRICIA_BITS); | |
63 | return tmp; | |
64 | } | |
65 | ||
66 | void | |
67 | free_class(struct Class *tmp) | |
68 | { | |
69 | if(tmp->ip_limits) | |
70 | Destroy_Patricia(tmp->ip_limits, NULL); | |
71 | ||
72 | MyFree(tmp->class_name); | |
73 | MyFree(tmp); | |
74 | ||
75 | } | |
76 | ||
77 | /* | |
78 | * get_conf_ping | |
79 | * | |
80 | * inputs - pointer to struct ConfItem | |
81 | * output - ping frequency | |
82 | * side effects - NONE | |
83 | */ | |
84 | static int | |
85 | get_conf_ping(struct ConfItem *aconf) | |
86 | { | |
87 | if((aconf) && ClassPtr(aconf)) | |
88 | return (ConfPingFreq(aconf)); | |
89 | ||
90 | return (BAD_PING); | |
91 | } | |
92 | ||
93 | /* | |
94 | * get_client_class | |
95 | * | |
96 | * inputs - pointer to client struct | |
97 | * output - pointer to name of class | |
98 | * side effects - NONE | |
99 | */ | |
100 | const char * | |
101 | get_client_class(struct Client *target_p) | |
102 | { | |
103 | const char *retc = "unknown"; | |
104 | ||
105 | if(target_p == NULL || IsMe(target_p)) | |
106 | return retc; | |
107 | ||
108 | if(IsServer(target_p)) | |
109 | { | |
110 | struct server_conf *server_p = target_p->localClient->att_sconf; | |
111 | return server_p->class_name; | |
112 | } | |
113 | else | |
114 | { | |
115 | struct ConfItem *aconf; | |
116 | aconf = target_p->localClient->att_conf; | |
117 | ||
118 | if((aconf == NULL) || (aconf->className == NULL)) | |
119 | retc = "default"; | |
120 | else | |
121 | retc = aconf->className; | |
122 | } | |
123 | ||
124 | return (retc); | |
125 | } | |
126 | ||
127 | /* | |
128 | * get_client_ping | |
129 | * | |
130 | * inputs - pointer to client struct | |
131 | * output - ping frequency | |
132 | * side effects - NONE | |
133 | */ | |
134 | int | |
135 | get_client_ping(struct Client *target_p) | |
136 | { | |
137 | int ping = 0; | |
138 | ||
139 | if(IsServer(target_p)) | |
140 | { | |
141 | struct server_conf *server_p = target_p->localClient->att_sconf; | |
142 | ping = PingFreq(server_p->class); | |
143 | } | |
144 | else | |
145 | { | |
146 | struct ConfItem *aconf; | |
147 | ||
148 | aconf = target_p->localClient->att_conf; | |
149 | ||
150 | if(aconf != NULL) | |
151 | ping = get_conf_ping(aconf); | |
152 | else | |
153 | ping = DEFAULT_PINGFREQUENCY; | |
154 | } | |
155 | ||
156 | if(ping <= 0) | |
157 | ping = DEFAULT_PINGFREQUENCY; | |
158 | ||
159 | return ping; | |
160 | } | |
161 | ||
162 | /* | |
163 | * get_con_freq | |
164 | * | |
165 | * inputs - pointer to class struct | |
166 | * output - connection frequency | |
167 | * side effects - NONE | |
168 | */ | |
169 | int | |
170 | get_con_freq(struct Class *clptr) | |
171 | { | |
172 | if(clptr) | |
173 | return (ConFreq(clptr)); | |
174 | return (DEFAULT_CONNECTFREQUENCY); | |
175 | } | |
176 | ||
177 | /* add_class() | |
178 | * | |
179 | * input - class to add | |
180 | * output - | |
181 | * side effects - class is added to class_list if new, else old class | |
182 | * is updated with new values. | |
183 | */ | |
184 | void | |
185 | add_class(struct Class *classptr) | |
186 | { | |
187 | struct Class *tmpptr; | |
188 | ||
189 | tmpptr = find_class(classptr->class_name); | |
190 | ||
191 | if(tmpptr == default_class) | |
192 | { | |
193 | dlinkAddAlloc(classptr, &class_list); | |
194 | CurrUsers(classptr) = 0; | |
195 | } | |
196 | else | |
197 | { | |
198 | MaxUsers(tmpptr) = MaxUsers(classptr); | |
199 | MaxLocal(tmpptr) = MaxLocal(classptr); | |
200 | MaxGlobal(tmpptr) = MaxGlobal(classptr); | |
201 | MaxIdent(tmpptr) = MaxIdent(classptr); | |
202 | PingFreq(tmpptr) = PingFreq(classptr); | |
203 | MaxSendq(tmpptr) = MaxSendq(classptr); | |
204 | ConFreq(tmpptr) = ConFreq(classptr); | |
205 | CidrBitlen(tmpptr) = CidrBitlen(classptr); | |
206 | CidrAmount(tmpptr) = CidrAmount(classptr); | |
207 | ||
208 | free_class(classptr); | |
209 | } | |
210 | } | |
211 | ||
212 | ||
213 | /* | |
214 | * find_class | |
215 | * | |
216 | * inputs - string name of class | |
217 | * output - corresponding class pointer | |
218 | * side effects - NONE | |
219 | */ | |
220 | struct Class * | |
221 | find_class(const char *classname) | |
222 | { | |
223 | struct Class *cltmp; | |
224 | dlink_node *ptr; | |
225 | ||
226 | if(classname == NULL) | |
227 | return default_class; | |
228 | ||
229 | DLINK_FOREACH(ptr, class_list.head) | |
230 | { | |
231 | cltmp = ptr->data; | |
232 | ||
233 | if(!strcmp(ClassName(cltmp), classname)) | |
234 | return cltmp; | |
235 | } | |
236 | ||
237 | return default_class; | |
238 | } | |
239 | ||
240 | /* | |
241 | * check_class | |
242 | * | |
243 | * inputs - NONE | |
244 | * output - NONE | |
245 | * side effects - | |
246 | */ | |
247 | void | |
248 | check_class() | |
249 | { | |
250 | struct Class *cltmp; | |
251 | dlink_node *ptr; | |
252 | dlink_node *next_ptr; | |
253 | ||
254 | DLINK_FOREACH_SAFE(ptr, next_ptr, class_list.head) | |
255 | { | |
256 | cltmp = ptr->data; | |
257 | ||
258 | if(MaxUsers(cltmp) < 0) | |
259 | { | |
260 | dlinkDestroy(ptr, &class_list); | |
261 | if(CurrUsers(cltmp) <= 0) | |
262 | free_class(cltmp); | |
263 | } | |
264 | } | |
265 | } | |
266 | ||
267 | /* | |
268 | * initclass | |
269 | * | |
270 | * inputs - NONE | |
271 | * output - NONE | |
272 | * side effects - | |
273 | */ | |
274 | void | |
275 | initclass() | |
276 | { | |
277 | default_class = make_class(); | |
278 | DupString(ClassName(default_class), "default"); | |
279 | } | |
280 | ||
281 | /* | |
282 | * report_classes | |
283 | * | |
284 | * inputs - pointer to client to report to | |
285 | * output - NONE | |
286 | * side effects - class report is done to this client | |
287 | */ | |
288 | void | |
289 | report_classes(struct Client *source_p) | |
290 | { | |
291 | struct Class *cltmp; | |
292 | dlink_node *ptr; | |
293 | ||
294 | DLINK_FOREACH(ptr, class_list.head) | |
295 | { | |
296 | cltmp = ptr->data; | |
297 | ||
298 | sendto_one_numeric(source_p, RPL_STATSYLINE, | |
299 | form_str(RPL_STATSYLINE), | |
300 | ClassName(cltmp), PingFreq(cltmp), | |
301 | ConFreq(cltmp), MaxUsers(cltmp), | |
302 | MaxSendq(cltmp), | |
303 | MaxLocal(cltmp), MaxIdent(cltmp), | |
304 | MaxGlobal(cltmp), MaxIdent(cltmp), | |
305 | CurrUsers(cltmp)); | |
306 | } | |
307 | ||
308 | /* also output the default class */ | |
309 | sendto_one_numeric(source_p, RPL_STATSYLINE, form_str(RPL_STATSYLINE), | |
310 | ClassName(default_class), PingFreq(default_class), | |
311 | ConFreq(default_class), MaxUsers(default_class), | |
312 | MaxSendq(default_class), | |
313 | MaxLocal(default_class), MaxIdent(default_class), | |
314 | MaxGlobal(default_class), MaxIdent(default_class), | |
315 | CurrUsers(default_class)); | |
316 | } | |
317 | ||
318 | /* | |
319 | * get_sendq | |
320 | * | |
321 | * inputs - pointer to client | |
322 | * output - sendq for this client as found from its class | |
323 | * side effects - NONE | |
324 | */ | |
325 | long | |
326 | get_sendq(struct Client *client_p) | |
327 | { | |
328 | if(client_p == NULL || IsMe(client_p)) | |
329 | return DEFAULT_SENDQ; | |
330 | ||
331 | if(IsServer(client_p)) | |
332 | { | |
333 | struct server_conf *server_p; | |
334 | server_p = client_p->localClient->att_sconf; | |
335 | return MaxSendq(server_p->class); | |
336 | } | |
337 | else | |
338 | { | |
339 | struct ConfItem *aconf = client_p->localClient->att_conf; | |
340 | ||
341 | if(aconf != NULL && aconf->status & CONF_CLIENT) | |
342 | return ConfMaxSendq(aconf); | |
343 | } | |
344 | ||
345 | return DEFAULT_SENDQ; | |
346 | } |