]>
Commit | Line | Data |
---|---|---|
212380e3 AC |
1 | /* |
2 | * ircd-ratbox: an advanced Internet Relay Chat Daemon(ircd). | |
3 | * hook.c - code for dealing with the hook system | |
4 | * | |
5 | * This code is basically a slow leaking array. Events are simply just a | |
6 | * position in this array. When hooks are added, events will be created if | |
7 | * they dont exist - this means modules with hooks can be loaded in any | |
8 | * order, and events are preserved through module reloads. | |
9 | * | |
10 | * Copyright (C) 2004-2005 Lee Hardy <lee -at- leeh.co.uk> | |
11 | * Copyright (C) 2004-2005 ircd-ratbox development team | |
12 | * | |
13 | * Redistribution and use in source and binary forms, with or without | |
14 | * modification, are permitted provided that the following conditions are | |
15 | * met: | |
16 | * | |
17 | * 1.Redistributions of source code must retain the above copyright notice, | |
18 | * this list of conditions and the following disclaimer. | |
19 | * 2.Redistributions in binary form must reproduce the above copyright | |
20 | * notice, this list of conditions and the following disclaimer in the | |
21 | * documentation and/or other materials provided with the distribution. | |
22 | * 3.The name of the author may not be used to endorse or promote products | |
23 | * derived from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
26 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
27 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, | |
29 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
30 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
31 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
32 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
33 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
34 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
35 | * POSSIBILITY OF SUCH DAMAGE. | |
36 | * | |
37 | * $Id: hook.c 712 2006-02-06 04:42:14Z gxti $ | |
38 | */ | |
39 | #include "stdinc.h" | |
212380e3 | 40 | #include "hook.h" |
4562c604 | 41 | #include "match.h" |
212380e3 AC |
42 | |
43 | hook *hooks; | |
44 | ||
45 | #define HOOK_INCREMENT 1000 | |
46 | ||
47 | int num_hooks = 0; | |
48 | int last_hook = 0; | |
49 | int max_hooks = HOOK_INCREMENT; | |
50 | ||
51 | #ifdef USE_IODEBUG_HOOKS | |
52 | int h_iosend_id; | |
53 | int h_iorecv_id; | |
54 | int h_iorecvctrl_id; | |
55 | #endif | |
56 | int h_burst_client; | |
57 | int h_burst_channel; | |
58 | int h_burst_finished; | |
59 | int h_server_introduced; | |
60 | int h_server_eob; | |
61 | int h_client_exit; | |
2e819b6b | 62 | int h_umode_changed; |
212380e3 AC |
63 | int h_new_local_user; |
64 | int h_new_remote_user; | |
65 | int h_introduce_client; | |
5f8d323c | 66 | int h_can_kick; |
ca4c2a86 AC |
67 | int h_privmsg_user; |
68 | int h_privmsg_channel; | |
7d603754 KB |
69 | int h_conf_read_start; |
70 | int h_conf_read_end; | |
212380e3 AC |
71 | |
72 | void | |
73 | init_hook(void) | |
74 | { | |
eddc2ab6 | 75 | hooks = rb_malloc(sizeof(hook) * HOOK_INCREMENT); |
212380e3 AC |
76 | |
77 | #ifdef USE_IODEBUG_HOOKS | |
78 | h_iosend_id = register_hook("iosend"); | |
79 | h_iorecv_id = register_hook("iorecv"); | |
80 | h_iorecvctrl_id = register_hook("iorecvctrl"); | |
81 | #endif | |
82 | ||
83 | h_burst_client = register_hook("burst_client"); | |
84 | h_burst_channel = register_hook("burst_channel"); | |
85 | h_burst_finished = register_hook("burst_finished"); | |
86 | h_server_introduced = register_hook("server_introduced"); | |
87 | h_server_eob = register_hook("server_eob"); | |
88 | h_client_exit = register_hook("client_exit"); | |
89 | h_umode_changed = register_hook("umode_changed"); | |
90 | h_new_local_user = register_hook("new_local_user"); | |
91 | h_new_remote_user = register_hook("new_remote_user"); | |
92 | h_introduce_client = register_hook("introduce_client"); | |
5f8d323c | 93 | h_can_kick = register_hook("can_kick"); |
ca4c2a86 AC |
94 | h_privmsg_user = register_hook("privmsg_user"); |
95 | h_privmsg_channel = register_hook("privmsg_channel"); | |
7d603754 KB |
96 | h_conf_read_start = register_hook("conf_read_start"); |
97 | h_conf_read_end = register_hook("conf_read_end"); | |
212380e3 AC |
98 | } |
99 | ||
100 | /* grow_hooktable() | |
101 | * Enlarges the hook table by HOOK_INCREMENT | |
102 | */ | |
103 | static void | |
104 | grow_hooktable(void) | |
105 | { | |
106 | hook *newhooks; | |
107 | ||
eddc2ab6 | 108 | newhooks = rb_malloc(sizeof(hook) * (max_hooks + HOOK_INCREMENT)); |
212380e3 AC |
109 | memcpy(newhooks, hooks, sizeof(hook) * num_hooks); |
110 | ||
637c4932 | 111 | rb_free(hooks); |
212380e3 AC |
112 | hooks = newhooks; |
113 | max_hooks += HOOK_INCREMENT; | |
114 | } | |
115 | ||
116 | /* find_freehookslot() | |
117 | * Finds the next free slot in the hook table, given by an entry with | |
118 | * h->name being NULL. | |
119 | */ | |
120 | static int | |
121 | find_freehookslot(void) | |
122 | { | |
123 | int i; | |
124 | ||
125 | if((num_hooks + 1) > max_hooks) | |
126 | grow_hooktable(); | |
127 | ||
128 | for(i = 0; i < max_hooks; i++) | |
129 | { | |
130 | if(!hooks[i].name) | |
131 | return i; | |
132 | } | |
133 | ||
134 | /* shouldnt ever get here */ | |
135 | return(max_hooks - 1); | |
136 | } | |
137 | ||
138 | /* find_hook() | |
139 | * Finds an event in the hook table. | |
140 | */ | |
141 | static int | |
142 | find_hook(const char *name) | |
143 | { | |
144 | int i; | |
145 | ||
146 | for(i = 0; i < max_hooks; i++) | |
147 | { | |
148 | if(!hooks[i].name) | |
149 | continue; | |
150 | ||
151 | if(!irccmp(hooks[i].name, name)) | |
152 | return i; | |
153 | } | |
154 | ||
155 | return -1; | |
156 | } | |
157 | ||
158 | /* register_hook() | |
159 | * Finds an events position in the hook table, creating it if it doesnt | |
160 | * exist. | |
161 | */ | |
162 | int | |
163 | register_hook(const char *name) | |
164 | { | |
165 | int i; | |
166 | ||
167 | if((i = find_hook(name)) < 0) | |
168 | { | |
169 | i = find_freehookslot(); | |
47a03750 | 170 | hooks[i].name = rb_strdup(name); |
212380e3 AC |
171 | num_hooks++; |
172 | } | |
173 | ||
174 | return i; | |
175 | } | |
176 | ||
177 | /* add_hook() | |
178 | * Adds a hook to an event in the hook table, creating event first if | |
179 | * needed. | |
180 | */ | |
181 | void | |
182 | add_hook(const char *name, hookfn fn) | |
183 | { | |
184 | int i; | |
185 | ||
186 | i = register_hook(name); | |
187 | ||
330fc5c1 | 188 | rb_dlinkAddAlloc(fn, &hooks[i].hooks); |
212380e3 AC |
189 | } |
190 | ||
191 | /* remove_hook() | |
192 | * Removes a hook from an event in the hook table. | |
193 | */ | |
194 | void | |
195 | remove_hook(const char *name, hookfn fn) | |
196 | { | |
197 | int i; | |
198 | ||
199 | if((i = find_hook(name)) < 0) | |
200 | return; | |
201 | ||
330fc5c1 | 202 | rb_dlinkFindDestroy(fn, &hooks[i].hooks); |
212380e3 AC |
203 | } |
204 | ||
205 | /* call_hook() | |
206 | * Calls functions from a given event in the hook table. | |
207 | */ | |
208 | void | |
209 | call_hook(int id, void *arg) | |
210 | { | |
211 | hookfn fn; | |
330fc5c1 | 212 | rb_dlink_node *ptr; |
212380e3 AC |
213 | |
214 | /* The ID we were passed is the position in the hook table of this | |
215 | * hook | |
216 | */ | |
5cefa1d6 | 217 | RB_DLINK_FOREACH(ptr, hooks[id].hooks.head) |
212380e3 AC |
218 | { |
219 | fn = ptr->data; | |
220 | fn(arg); | |
221 | } | |
222 | } | |
223 |