chiark / gitweb /
Build system: Use -lresolv only if inet_aton is not found otherwise.
[secnet] / comm-common.c
CommitLineData
c215a4bc
IJ
1/*
2 * This file is part of secnet.
3 * See README for full list of copyright holders.
4 *
5 * secnet is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version d of the License, or
8 * (at your option) any later version.
9 *
10 * secnet is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * version 3 along with secnet; if not, see
17 * https://www.gnu.org/licenses/gpl.html.
18 */
54d5ef00
IJ
19
20#include "secnet.h"
21#include "comm-common.h"
22
23void comm_request_notify(void *commst, void *nst, comm_notify_fn *fn)
24{
25 struct commcommon *st=commst;
26 struct comm_notify_entry *n;
27
b7886fd4 28 NEW(n);
54d5ef00
IJ
29 n->fn=fn;
30 n->state=nst;
31 LIST_INSERT_HEAD(&st->notify, n, entry);
32}
33
34void comm_release_notify(void *commst, void *nst, comm_notify_fn *fn)
35{
36 struct commcommon *st=commst;
37 struct comm_notify_entry *n, *t;
38
39 /* XXX untested */
40 LIST_FOREACH_SAFE(n, &st->notify, entry, t) {
41 if (n->state==nst && n->fn==fn) {
42 LIST_REMOVE(n, entry);
43 free(n);
44 }
45 }
46}
47
48bool_t comm_notify(struct comm_notify_list *notify,
49 struct buffer_if *buf, const struct comm_addr *ca)
50{
51 struct comm_notify_entry *n;
52
53 LIST_FOREACH(n, notify, entry) {
54 if (n->fn(n->state, buf, ca)) {
55 return True;
56 }
57 }
58 return False;
59}
60
61void comm_apply(struct commcommon *cc, void *st)
62{
63 assert(cc==st);
64 cc->cl.type=CL_COMM;
65 cc->cl.apply=NULL;
66 cc->cl.interface=&cc->ops;
67 cc->ops.st=cc;
68 cc->ops.request_notify=comm_request_notify;
69 cc->ops.release_notify=comm_release_notify;
70 LIST_INIT(&cc->notify);
71 cc->rbuf=NULL;
72}