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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 | ||
25 | #include "stdinc.h" | |
26 | #include "defaults.h" | |
27 | ||
28 | #include "class.h" | |
29 | #include "client.h" | |
30 | #include "ircd.h" | |
31 | #include "numeric.h" | |
32 | #include "s_conf.h" | |
33 | #include "s_newconf.h" | |
34 | #include "send.h" | |
35 | #include "match.h" | |
36 | ||
37 | #define BAD_PING -2 | |
38 | ||
39 | rb_dlink_list class_list; | |
40 | struct Class *default_class; | |
41 | ||
42 | struct Class * | |
43 | make_class(void) | |
44 | { | |
45 | struct Class *tmp; | |
46 | ||
47 | tmp = rb_malloc(sizeof(struct Class)); | |
48 | ||
49 | ConFreq(tmp) = DEFAULT_CONNECTFREQUENCY; | |
50 | PingFreq(tmp) = DEFAULT_PINGFREQUENCY; | |
51 | MaxUsers(tmp) = 1; | |
52 | MaxSendq(tmp) = DEFAULT_SENDQ; | |
53 | ||
54 | tmp->ip_limits = rb_new_patricia(PATRICIA_BITS); | |
55 | return tmp; | |
56 | } | |
57 | ||
58 | void | |
59 | free_class(struct Class *tmp) | |
60 | { | |
61 | if(tmp->ip_limits) | |
62 | rb_destroy_patricia(tmp->ip_limits, NULL); | |
63 | ||
64 | rb_free(tmp->class_name); | |
65 | rb_free(tmp); | |
66 | ||
67 | } | |
68 | ||
69 | /* | |
70 | * get_conf_ping | |
71 | * | |
72 | * inputs - pointer to struct ConfItem | |
73 | * output - ping frequency | |
74 | * side effects - NONE | |
75 | */ | |
76 | static int | |
77 | get_conf_ping(struct ConfItem *aconf) | |
78 | { | |
79 | if((aconf) && ClassPtr(aconf)) | |
80 | return (ConfPingFreq(aconf)); | |
81 | ||
82 | return (BAD_PING); | |
83 | } | |
84 | ||
85 | /* | |
86 | * get_client_class | |
87 | * | |
88 | * inputs - pointer to client struct | |
89 | * output - pointer to name of class | |
90 | * side effects - NONE | |
91 | */ | |
92 | const char * | |
93 | get_client_class(struct Client *target_p) | |
94 | { | |
95 | const char *retc = "unknown"; | |
96 | ||
97 | if(target_p == NULL || IsMe(target_p)) | |
98 | return retc; | |
99 | ||
100 | if(IsServer(target_p)) | |
101 | { | |
102 | struct server_conf *server_p = target_p->localClient->att_sconf; | |
103 | return server_p->class_name; | |
104 | } | |
105 | else | |
106 | { | |
107 | struct ConfItem *aconf; | |
108 | aconf = target_p->localClient->att_conf; | |
109 | ||
110 | if((aconf == NULL) || (aconf->className == NULL)) | |
111 | retc = "default"; | |
112 | else | |
113 | retc = aconf->className; | |
114 | } | |
115 | ||
116 | return (retc); | |
117 | } | |
118 | ||
119 | /* | |
120 | * get_client_ping | |
121 | * | |
122 | * inputs - pointer to client struct | |
123 | * output - ping frequency | |
124 | * side effects - NONE | |
125 | */ | |
126 | int | |
127 | get_client_ping(struct Client *target_p) | |
128 | { | |
129 | int ping = 0; | |
130 | ||
131 | if(IsServer(target_p)) | |
132 | { | |
133 | struct server_conf *server_p = target_p->localClient->att_sconf; | |
134 | ping = PingFreq(server_p->class); | |
135 | } | |
136 | else | |
137 | { | |
138 | struct ConfItem *aconf; | |
139 | ||
140 | aconf = target_p->localClient->att_conf; | |
141 | ||
142 | if(aconf != NULL) | |
143 | ping = get_conf_ping(aconf); | |
144 | else | |
145 | ping = DEFAULT_PINGFREQUENCY; | |
146 | } | |
147 | ||
148 | if(ping <= 0) | |
149 | ping = DEFAULT_PINGFREQUENCY; | |
150 | ||
151 | return ping; | |
152 | } | |
153 | ||
154 | /* | |
155 | * get_con_freq | |
156 | * | |
157 | * inputs - pointer to class struct | |
158 | * output - connection frequency | |
159 | * side effects - NONE | |
160 | */ | |
161 | int | |
162 | get_con_freq(struct Class *clptr) | |
163 | { | |
164 | if(clptr) | |
165 | return (ConFreq(clptr)); | |
166 | return (DEFAULT_CONNECTFREQUENCY); | |
167 | } | |
168 | ||
169 | /* add_class() | |
170 | * | |
171 | * input - class to add | |
172 | * output - | |
173 | * side effects - class is added to class_list if new, else old class | |
174 | * is updated with new values. | |
175 | */ | |
176 | void | |
177 | add_class(struct Class *classptr) | |
178 | { | |
179 | struct Class *tmpptr; | |
180 | ||
181 | tmpptr = find_class(classptr->class_name); | |
182 | ||
183 | if(tmpptr == default_class) | |
184 | { | |
185 | rb_dlinkAddAlloc(classptr, &class_list); | |
186 | CurrUsers(classptr) = 0; | |
187 | } | |
188 | else | |
189 | { | |
190 | MaxUsers(tmpptr) = MaxUsers(classptr); | |
191 | MaxLocal(tmpptr) = MaxLocal(classptr); | |
192 | MaxGlobal(tmpptr) = MaxGlobal(classptr); | |
193 | MaxIdent(tmpptr) = MaxIdent(classptr); | |
194 | PingFreq(tmpptr) = PingFreq(classptr); | |
195 | MaxSendq(tmpptr) = MaxSendq(classptr); | |
196 | ConFreq(tmpptr) = ConFreq(classptr); | |
197 | CidrIpv4Bitlen(tmpptr) = CidrIpv4Bitlen(classptr); | |
198 | CidrIpv6Bitlen(tmpptr) = CidrIpv6Bitlen(classptr); | |
199 | CidrAmount(tmpptr) = CidrAmount(classptr); | |
200 | ||
201 | free_class(classptr); | |
202 | } | |
203 | } | |
204 | ||
205 | ||
206 | /* | |
207 | * find_class | |
208 | * | |
209 | * inputs - string name of class | |
210 | * output - corresponding class pointer | |
211 | * side effects - NONE | |
212 | */ | |
213 | struct Class * | |
214 | find_class(const char *classname) | |
215 | { | |
216 | struct Class *cltmp; | |
217 | rb_dlink_node *ptr; | |
218 | ||
219 | if(classname == NULL) | |
220 | return default_class; | |
221 | ||
222 | RB_DLINK_FOREACH(ptr, class_list.head) | |
223 | { | |
224 | cltmp = ptr->data; | |
225 | ||
226 | if(!strcmp(ClassName(cltmp), classname)) | |
227 | return cltmp; | |
228 | } | |
229 | ||
230 | return default_class; | |
231 | } | |
232 | ||
233 | /* | |
234 | * check_class | |
235 | * | |
236 | * inputs - NONE | |
237 | * output - NONE | |
238 | * side effects - | |
239 | */ | |
240 | void | |
241 | check_class() | |
242 | { | |
243 | struct Class *cltmp; | |
244 | rb_dlink_node *ptr; | |
245 | rb_dlink_node *next_ptr; | |
246 | ||
247 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, class_list.head) | |
248 | { | |
249 | cltmp = ptr->data; | |
250 | ||
251 | if(MaxUsers(cltmp) < 0) | |
252 | { | |
253 | rb_dlinkDestroy(ptr, &class_list); | |
254 | if(CurrUsers(cltmp) <= 0) | |
255 | free_class(cltmp); | |
256 | } | |
257 | } | |
258 | } | |
259 | ||
260 | /* | |
261 | * initclass | |
262 | * | |
263 | * inputs - NONE | |
264 | * output - NONE | |
265 | * side effects - | |
266 | */ | |
267 | void | |
268 | initclass() | |
269 | { | |
270 | default_class = make_class(); | |
271 | ClassName(default_class) = rb_strdup("default"); | |
272 | } | |
273 | ||
274 | /* | |
275 | * report_classes | |
276 | * | |
277 | * inputs - pointer to client to report to | |
278 | * output - NONE | |
279 | * side effects - class report is done to this client | |
280 | */ | |
281 | void | |
282 | report_classes(struct Client *source_p) | |
283 | { | |
284 | struct Class *cltmp; | |
285 | rb_dlink_node *ptr; | |
286 | ||
287 | RB_DLINK_FOREACH(ptr, class_list.head) | |
288 | { | |
289 | cltmp = ptr->data; | |
290 | ||
291 | sendto_one_numeric(source_p, RPL_STATSYLINE, | |
292 | form_str(RPL_STATSYLINE), | |
293 | ClassName(cltmp), PingFreq(cltmp), | |
294 | ConFreq(cltmp), MaxUsers(cltmp), | |
295 | MaxSendq(cltmp), | |
296 | MaxLocal(cltmp), MaxIdent(cltmp), | |
297 | MaxGlobal(cltmp), MaxIdent(cltmp), | |
298 | CurrUsers(cltmp)); | |
299 | } | |
300 | ||
301 | /* also output the default class */ | |
302 | sendto_one_numeric(source_p, RPL_STATSYLINE, form_str(RPL_STATSYLINE), | |
303 | ClassName(default_class), PingFreq(default_class), | |
304 | ConFreq(default_class), MaxUsers(default_class), | |
305 | MaxSendq(default_class), | |
306 | MaxLocal(default_class), MaxIdent(default_class), | |
307 | MaxGlobal(default_class), MaxIdent(default_class), | |
308 | CurrUsers(default_class)); | |
309 | } | |
310 | ||
311 | /* | |
312 | * get_sendq | |
313 | * | |
314 | * inputs - pointer to client | |
315 | * output - sendq for this client as found from its class | |
316 | * side effects - NONE | |
317 | */ | |
318 | long | |
319 | get_sendq(struct Client *client_p) | |
320 | { | |
321 | if(client_p == NULL || IsMe(client_p)) | |
322 | return DEFAULT_SENDQ; | |
323 | ||
324 | if(IsServer(client_p)) | |
325 | { | |
326 | struct server_conf *server_p; | |
327 | server_p = client_p->localClient->att_sconf; | |
328 | return MaxSendq(server_p->class); | |
329 | } | |
330 | else | |
331 | { | |
332 | struct ConfItem *aconf = client_p->localClient->att_conf; | |
333 | ||
334 | if(aconf != NULL && aconf->status & CONF_CLIENT) | |
335 | return ConfMaxSendq(aconf); | |
336 | } | |
337 | ||
338 | return DEFAULT_SENDQ; | |
339 | } |