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#include <string.h>
#include "l2tpns.h"
#include "plugin.h"
/* set up throttling based on RADIUS reply */
char const *cvs_id = "$Id: autothrottle.c,v 1.13 2004/11/30 07:14:45 bodea Exp $";
int plugin_api_version = PLUGIN_API_VERSION;
struct pluginfuncs *p;
#define THROTTLE_KEY "lcp:interface-config"
int plugin_radius_response(struct param_radius_response *data)
{
if (!strncmp(data->key, THROTTLE_KEY, sizeof(THROTTLE_KEY) - 1))
{
char *sp = strchr(data->value, ' ');
char type;
int rate;
if (!sp || sp - data->value < 4 ||
strncmp("service-policy", data->value, sp - data->value))
return PLUGIN_RET_OK;
while (*sp == ' ') sp++;
data->value = sp;
if (!(sp = strchr(data->value, ' ')) ||
(strncmp("input", data->value, sp - data->value) &&
strncmp("output", data->value, sp - data->value)))
{
p->log(3, p->get_id_by_session(data->s), data->s->tunnel,
" Not throttling user (invalid type %.*s)\n",
sp - data->value, data->value);
return PLUGIN_RET_OK;
}
type = *data->value;
while (*sp == ' ') sp++;
data->value = sp;
if ((rate = strtol(data->value, &sp, 10)) < 0 || *sp)
{
p->log(3, p->get_id_by_session(data->s), data->s->tunnel,
" Not throttling user (invalid rate %s)\n",
data->value);
return PLUGIN_RET_OK;
}
if (type == 'i')
{
data->s->throttle_in = rate;
p->log(3, p->get_id_by_session(data->s), data->s->tunnel,
" Throttling user input to %dkb/s\n",
rate);
}
else
{
data->s->throttle_out = rate;
p->log(3, p->get_id_by_session(data->s), data->s->tunnel,
" Throttling user output to %dkb/s\n",
rate);
}
}
if (!strcmp(data->key, "throttle"))
{
if (!strcmp(data->value, "yes"))
{
unsigned long *rate = p->getconfig("throttle_speed", UNSIGNED_LONG);
if (rate)
{
if (*rate)
p->log(3, p->get_id_by_session(data->s), data->s->tunnel,
" Throttling user to %dkb/s\n", *rate);
else
p->log(3, p->get_id_by_session(data->s), data->s->tunnel,
" Not throttling user (throttle_speed=0)\n");
data->s->throttle_in = data->s->throttle_out = *rate;
}
else
p->log(1, p->get_id_by_session(data->s), data->s->tunnel,
" Not throttling user (can't get throttle_speed)\n");
}
else if (!strcmp(data->value, "no"))
{
p->log(3, p->get_id_by_session(data->s), data->s->tunnel,
" Not throttling user\n");
data->s->throttle_in = data->s->throttle_out = 0;
}
}
return PLUGIN_RET_OK;
}
int plugin_init(struct pluginfuncs *funcs)
{
return ((p = funcs)) ? 1 : 0;
}
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