1 /*
2 * minconn.c - pppd plugin to implement a `minconnect' option.
3 *
4 * Copyright (c) 1999 Paul Mackerras. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 *
18 * 3. The name(s) of the authors of this software must not be used to
19 * endorse or promote products derived from this software without
20 * prior written permission.
21 *
22 * 4. Redistributions of any form whatsoever must retain the following
23 * acknowledgment:
24 * "This product includes software developed by Paul Mackerras
25 * <paulus@samba.org>".
26 *
27 * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
28 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
29 * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
30 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
31 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
32 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
33 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
34 */
35 #include <stddef.h>
36 #include <time.h>
37 #include "pppd.h"
38
39 char pppd_version[] = VERSION;
40
41 static int minconnect = 0;
42
43 static option_t my_options[] = {
44 { "minconnect", o_int, &minconnect,
45 "Set minimum connect time before idle timeout applies" },
46 { NULL }
47 };
48
my_get_idle(struct ppp_idle * idle)49 static int my_get_idle(struct ppp_idle *idle)
50 {
51 time_t t;
52
53 if (idle == NULL)
54 return minconnect? minconnect: idle_time_limit;
55 t = idle->xmit_idle;
56 if (idle->recv_idle < t)
57 t = idle->recv_idle;
58 return idle_time_limit - t;
59 }
60
plugin_init(void)61 void plugin_init(void)
62 {
63 info("plugin_init");
64 add_options(my_options);
65 idle_time_hook = my_get_idle;
66 }
67