release/src/router/ppp/pppd/plugins/minconn.c

   1 /*
   2  * minconn.c - pppd plugin to implement a `minconnect' option.
   3  *
   4  * Copyright 1999 Paul Mackerras.
   5  *
   6  * Redistribution and use in source and binary forms are permitted
   7  * provided that the above copyright notice and this paragraph are
   8  * duplicated in all such forms.  The name of the author
   9  * may not be used to endorse or promote products derived
  10  * from this software without specific prior written permission.
  11  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  12  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  13  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  14  */
  15 #include <stddef.h>
  16 #include <time.h>
  17 #include "pppd.h"
  18
  19 char pppd_version[] = VERSION;
  20
  21 static int minconnect = 0;
  22
  23 static option_t my_options[] = {
  24         { "minconnect", o_int, &minconnect,
  25           "Set minimum connect time before idle timeout applies" },
  26         { NULL }
  27 };
  28
  29 static int my_get_idle(struct ppp_idle *idle)
  30 {
  31         time_t t;
  32
  33         if (idle == NULL)
  34                 return minconnect? minconnect: idle_time_limit;
  35         t = idle->xmit_idle;
  36         if (idle->recv_idle < t)
  37                 t = idle->recv_idle;
  38         return idle_time_limit - t;
  39 }
  40
  41 void plugin_init(void)
  42 {
  43         info("plugin_init");
  44         add_options(my_options);
  45         idle_time_hook = my_get_idle;
  46 }