Logo Search packages:      
Sourcecode: l2tpns version File versions  Download package

throttlectl.c

#include <string.h>
#include "l2tpns.h"
#include "plugin.h"
#include "control.h"

/* throttle control */

char const *cvs_id = "$Id: throttlectl.c,v 1.9 2005/10/11 09:04:53 bodea Exp $";

int plugin_api_version = PLUGIN_API_VERSION;
static struct pluginfuncs *f = 0;

char *plugin_control_help[] = {
    "  throttle USER|SID [RATE|[in|out] RATE ...]  Throttle user traffic",
    "  unthrottle USER|SID                         Stop throttling user",
    0
};

int plugin_control(struct param_control *data)
{
    sessionidt session;
    sessiont *s = 0;
    int flag;
    char *end;
    int rate_in = 0;
    int rate_out = 0;

    if (data->argc < 1)
      return PLUGIN_RET_OK;

    if (strcmp(data->argv[0], "throttle") &&
      strcmp(data->argv[0], "unthrottle"))
      return PLUGIN_RET_OK; // not for us

    if (!data->iam_master)
      return PLUGIN_RET_NOTMASTER;

    flag = data->argv[0][0] == 't';

    if (flag)
    {
      if (data->argc < 2 || data->argc > 6)
      {
          data->response = NSCTL_RES_ERR;
          data->additional = "requires username or session id and optional rate(s)";
          return PLUGIN_RET_STOP;
      }
    }
    else
    {
      if (data->argc != 2)
      {
          data->response = NSCTL_RES_ERR;
          data->additional = "requires username or session id";
          return PLUGIN_RET_STOP;
      }
    }

    if (!(session = strtol(data->argv[1], &end, 10)) || *end)
      session = f->get_session_by_username(data->argv[1]);

    if (session)
      s = f->get_session_by_id(session);

    if (!s || !s->ip)
    {
      data->response = NSCTL_RES_ERR;
      data->additional = "session not found";
      return PLUGIN_RET_STOP;
    }

    if (flag)
    {
      rate_in = rate_out = -1;
      if (data->argc == 2)
      {
          unsigned long *rate = f->getconfig("throttle_speed", UNSIGNED_LONG);
          rate_in = rate_out = *rate;
      }
      else if (data->argc == 3)
      {
          rate_in = rate_out = atoi(data->argv[2]);
      }
      else
      {
          int i;
          for (i = 2; i < data->argc - 1; i += 2)
          {
            int len = strlen(data->argv[i]);
            if (!strncmp(data->argv[i], "in", len))
            {
                rate_in = atoi(data->argv[i+1]);
            }
            else if (!strncmp(data->argv[i], "out", len))
            {
                rate_out = atoi(data->argv[i+1]);
            }
            else
            {
                data->response = NSCTL_RES_ERR;
                data->additional = "invalid rate";
                return PLUGIN_RET_STOP;
            }
          }
      }

      if (!rate_in || !rate_out)
      {
          data->response = NSCTL_RES_ERR;
          data->additional = "invalid rate";
          return PLUGIN_RET_STOP;
      }
    }

    if (rate_in != -1 && rate_in == s->throttle_in &&
      rate_out != -1 && rate_out == s->throttle_out)
    {
      data->response = NSCTL_RES_ERR;
      data->additional = flag ? "already throttled" : "not throttled";
      return PLUGIN_RET_STOP;
    }

    f->throttle(session, rate_in, rate_out);
    f->session_changed(session);

    data->response = NSCTL_RES_OK;
    data->additional = 0;

    return PLUGIN_RET_STOP;
}

int plugin_init(struct pluginfuncs *funcs)
{
    return ((f = funcs)) ? 1 : 0;
}

Generated by  Doxygen 1.6.0   Back to index