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jfr.im git - solanum.git/blob - src/hook.c
2 * ircd-ratbox: an advanced Internet Relay Chat Daemon(ircd).
3 * hook.c - code for dealing with the hook system
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.
10 * Copyright (C) 2004-2005 Lee Hardy <lee -at- leeh.co.uk>
11 * Copyright (C) 2004-2005 ircd-ratbox development team
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions are
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.
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.
37 * $Id: hook.c 712 2006-02-06 04:42:14Z gxti $
45 #define HOOK_INCREMENT 1000
49 int max_hooks
= HOOK_INCREMENT
;
51 #ifdef USE_IODEBUG_HOOKS
59 int h_server_introduced
;
64 int h_new_remote_user
;
65 int h_introduce_client
;
70 hooks
= rb_malloc(sizeof(hook
) * HOOK_INCREMENT
);
72 #ifdef USE_IODEBUG_HOOKS
73 h_iosend_id
= register_hook("iosend");
74 h_iorecv_id
= register_hook("iorecv");
75 h_iorecvctrl_id
= register_hook("iorecvctrl");
78 h_burst_client
= register_hook("burst_client");
79 h_burst_channel
= register_hook("burst_channel");
80 h_burst_finished
= register_hook("burst_finished");
81 h_server_introduced
= register_hook("server_introduced");
82 h_server_eob
= register_hook("server_eob");
83 h_client_exit
= register_hook("client_exit");
84 h_umode_changed
= register_hook("umode_changed");
85 h_new_local_user
= register_hook("new_local_user");
86 h_new_remote_user
= register_hook("new_remote_user");
87 h_introduce_client
= register_hook("introduce_client");
91 * Enlarges the hook table by HOOK_INCREMENT
98 newhooks
= rb_malloc(sizeof(hook
) * (max_hooks
+ HOOK_INCREMENT
));
99 memcpy(newhooks
, hooks
, sizeof(hook
) * num_hooks
);
103 max_hooks
+= HOOK_INCREMENT
;
106 /* find_freehookslot()
107 * Finds the next free slot in the hook table, given by an entry with
108 * h->name being NULL.
111 find_freehookslot(void)
115 if((num_hooks
+ 1) > max_hooks
)
118 for(i
= 0; i
< max_hooks
; i
++)
124 /* shouldnt ever get here */
125 return(max_hooks
- 1);
129 * Finds an event in the hook table.
132 find_hook(const char *name
)
136 for(i
= 0; i
< max_hooks
; i
++)
141 if(!irccmp(hooks
[i
].name
, name
))
149 * Finds an events position in the hook table, creating it if it doesnt
153 register_hook(const char *name
)
157 if((i
= find_hook(name
)) < 0)
159 i
= find_freehookslot();
160 hooks
[i
].name
= rb_strdup(name
);
168 * Adds a hook to an event in the hook table, creating event first if
172 add_hook(const char *name
, hookfn fn
)
176 i
= register_hook(name
);
178 rb_dlinkAddAlloc(fn
, &hooks
[i
].hooks
);
182 * Removes a hook from an event in the hook table.
185 remove_hook(const char *name
, hookfn fn
)
189 if((i
= find_hook(name
)) < 0)
192 rb_dlinkFindDestroy(fn
, &hooks
[i
].hooks
);
196 * Calls functions from a given event in the hook table.
199 call_hook(int id
, void *arg
)
204 /* The ID we were passed is the position in the hook table of this
207 RB_DLINK_FOREACH(ptr
, hooks
[id
].hooks
.head
)