#!/usr/local/bin/php
<?php
require_once("pfsense-utils.inc");

ini_set("max_execution_time", "0");

if (empty($argv[1])) {
    echo "No modem device given \n";
    exit(0);
}

/* Huawei example */
$device = "/dev/{$argv[1]}";
$statfile = "/tmp/3gstats.{$argv[2]}";
/* mode is a comma separated value, thus submode is born */
$header = "#seconds,rssi,mode,submode,upstream,downstream,sentbytes,receivedbyts,bwupstream,bwdownstream,simstate,service\n";

$i = 0;

$record = array();
$handle = fopen($device, "r");
if (! $handle) {
    echo "Can not open modem stats device\n";
    exit(1);
}

$record['time'] = 0;
$record['rssi'] = 0;
$record['mode'] = "0,0";
$record['upstream'] = 0;
$record['downstream'] = 0;
$record['sent'] = 0;
$record['received'] = 0;
$record['bwupstream'] = 0;
$record['bwdownstream'] = 0;
$record['simstate'] = 0;
$record['service'] = 0;

while (true) {
    $string = "";
    $string = fgets($handle, 256);

    $elements = array();
    $elements = split(":", $string);
    $elements[0] = trim($elements[0]);
    $elements[1] = trim($elements[1]);

    switch ($elements[0]) {
        case "^MODE":
            $record['mode'] = $elements[1];
            break;
        case "^SRVST":
            $record['service'] = $elements[1];
            break;
        case "^SIMST":
            $record['simstate'] = $elements[1];
            break;
        case "^RSSI":
            $record['rssi'] = $elements[1];
            break;
        case "^DSFLOWRPT":
            $items = array();
            $items = split(",", $elements[1]);
            $record['time'] = hexdec($items[0]);
            $record['upstream'] = round((floatval(hexdec($items[1])) * 8) /1024);
            $record['downstream'] = round((floatval(hexdec($items[2])) * 8) /1024);
            $record['sent'] = hexdec($items[3]);
            $record['received'] = hexdec($items[4]);
            $record['bwupstream'] = round((floatval(hexdec($items[5])) * 8) /1024);
            $record['bwdownstream'] = round((floatval(hexdec($items[6])) * 8) /1024);
            break;
    }

    if ($i > 10) {
        $csv = $header;
        $csv .= implode(",", $record);
        $csv .= "\n";
        file_put_contents($statfile, $csv);
        $i = 0;
    }
    $i++;
}
fclose($handle);
?>
