autothrottle.c

   1 #include <string.h>
   2 #include <malloc.h>
   3 #include <stdlib.h>
   4 #include <sys/wait.h>
   5 #include <sys/types.h>
   6 #include "l2tpns.h"
   7 #include "plugin.h"
   8 #include "control.h"
   9
  10 int __plugin_api_version = 1;
  11 struct pluginfuncs *p;
  12
  13 #define THROTTLE_KEY "lcp:interface-config"
  14
  15 int plugin_radius_response(struct param_radius_response *data)
  16 {
  17         char *t;
  18         int i = 0;
  19         int rate;
  20
  21         if (strncmp(data->key, THROTTLE_KEY, strlen(THROTTLE_KEY)) == 0)
  22         {
  23                 char *pt = strdup(data->value);
  24                 while ((t = strsep(&pt, " ")) != NULL)
  25                 {
  26                         if (strcmp(t, "serv") == 0)
  27                                 i = 1;
  28                         else if (strcmp(t, "o") && i == 1)
  29                                 i = 2;
  30                         else if (strcmp(t, "i") && i == 1)
  31                                 i = 3;
  32                         else if (i > 1 && (rate = atoi(t)) > 0)
  33                         {
  34                                 switch (i)
  35                                 {
  36                                         case 2: // output
  37                                                 data->s->throttle |= (rate & 0xFFFF);
  38                                                 free(pt);
  39                                                 p->log(3, 0, p->get_id_by_session(data->s), data->s->tunnel, "      Set output throttle rate %dkb/s\n", rate);
  40                                                 return PLUGIN_RET_OK;
  41
  42                                         case 3: //input
  43                                                 data->s->throttle |= (rate << 16);
  44                                                 free(pt);
  45                                                 p->log(3, 0, p->get_id_by_session(data->s), data->s->tunnel, "      Set input throttle rate %dkb/s\n", rate);
  46                                                 return PLUGIN_RET_OK;
  47
  48                                         default:
  49                                                 p->log(1, 0, p->get_id_by_session(data->s), data->s->tunnel, "Syntax error in rate limit AV pair: %s=%s\n", data->key, data->value);
  50                                                 free(pt);
  51                                                 return PLUGIN_RET_OK;
  52                                 }
  53                         }
  54                         else
  55                         {
  56                                 free(pt);
  57                                 p->log(1, 0, p->get_id_by_session(data->s), data->s->tunnel, "Syntax error in rate limit AV pair: %s=%s\n",
  58                                         data->key, data->value);
  59                                 return PLUGIN_RET_OK;
  60                         }
  61                 }
  62                 free(pt);
  63         }
  64         else if (strcmp(data->key, "throttle") == 0)
  65         {
  66                 if (strcmp(data->value, "yes") == 0)
  67                 {
  68                         p->log(3, 0, p->get_id_by_session(data->s), data->s->tunnel, "         Throttling user\n");
  69                         data->s->throttle = 1;
  70                 }
  71                 else if (strcmp(data->value, "no") == 0)
  72                 {
  73                         p->log(3, 0, p->get_id_by_session(data->s), data->s->tunnel, "         Not throttling user\n");
  74                         data->s->throttle = 0;
  75                 }
  76         }
  77
  78         p->log(4, 0, p->get_id_by_session(data->s), data->s->tunnel, "autothrottle module ignoring AV pair %s=%s\n",
  79                 data->key, data->value);
  80
  81         return PLUGIN_RET_OK;
  82 }
  83
  84 int plugin_init(struct pluginfuncs *funcs)
  85 {
  86         return ((p = funcs)) ? 1 : 0;
  87 }
  88
  89 void plugin_done()
  90 {
  91 }
  92