133 lines
2.8 KiB
C
133 lines
2.8 KiB
C
#include <string.h>
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#include "l2tpns.h"
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#include "plugin.h"
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#include "control.h"
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/* throttle control */
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int plugin_api_version = PLUGIN_API_VERSION;
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static struct pluginfuncs *f = 0;
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char *plugin_control_help[] = {
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" throttle USER|SID [RATE|[in|out] RATE ...] Throttle user traffic",
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" unthrottle USER|SID Stop throttling user",
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0
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};
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int plugin_control(struct param_control *data)
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{
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sessionidt session;
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sessiont *s = 0;
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int flag;
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char *end;
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int rate_in = 0;
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int rate_out = 0;
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if (data->argc < 1)
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return PLUGIN_RET_OK;
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if (strcmp(data->argv[0], "throttle") &&
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strcmp(data->argv[0], "unthrottle"))
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return PLUGIN_RET_OK; // not for us
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if (!data->iam_master)
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return PLUGIN_RET_NOTMASTER;
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flag = data->argv[0][0] == 't';
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if (flag)
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{
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if (data->argc < 2 || data->argc > 6)
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{
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data->response = NSCTL_RES_ERR;
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data->additional = "requires username or session id and optional rate(s)";
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return PLUGIN_RET_STOP;
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}
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}
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else
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{
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if (data->argc != 2)
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{
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data->response = NSCTL_RES_ERR;
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data->additional = "requires username or session id";
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return PLUGIN_RET_STOP;
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}
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}
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if (!(session = strtol(data->argv[1], &end, 10)) || *end)
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session = f->get_session_by_username(data->argv[1]);
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if (session)
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s = f->get_session_by_id(session);
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if (!s || !s->ip)
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{
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data->response = NSCTL_RES_ERR;
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data->additional = "session not found";
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return PLUGIN_RET_STOP;
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}
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if (flag)
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{
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rate_in = rate_out = -1;
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if (data->argc == 2)
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{
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unsigned long *rate = f->getconfig("throttle_speed", UNSIGNED_LONG);
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rate_in = rate_out = *rate;
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}
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else if (data->argc == 3)
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{
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rate_in = rate_out = atoi(data->argv[2]);
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}
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else
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{
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int i;
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for (i = 2; i < data->argc - 1; i += 2)
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{
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int len = strlen(data->argv[i]);
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if (!strncmp(data->argv[i], "in", len))
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{
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rate_in = atoi(data->argv[i+1]);
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}
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else if (!strncmp(data->argv[i], "out", len))
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{
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rate_out = atoi(data->argv[i+1]);
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}
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else
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{
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data->response = NSCTL_RES_ERR;
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data->additional = "invalid rate";
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return PLUGIN_RET_STOP;
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}
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}
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}
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if (!rate_in || !rate_out)
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{
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data->response = NSCTL_RES_ERR;
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data->additional = "invalid rate";
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return PLUGIN_RET_STOP;
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}
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}
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if (rate_in != -1 && rate_in == s->throttle_in &&
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rate_out != -1 && rate_out == s->throttle_out)
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{
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data->response = NSCTL_RES_ERR;
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data->additional = flag ? "already throttled" : "not throttled";
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return PLUGIN_RET_STOP;
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}
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f->throttle(session, rate_in, rate_out);
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f->session_changed(session);
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data->response = NSCTL_RES_OK;
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data->additional = 0;
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return PLUGIN_RET_STOP;
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}
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int plugin_init(struct pluginfuncs *funcs)
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{
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return ((f = funcs)) ? 1 : 0;
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}
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