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<?php
class RemoteReport
{
const ENABLED_ID = 'statistics-reporting-enabled';
const NEXT_SUBMIT_ID = 'statistics-reporting-next';
/**
* Enable or disable remote reporting of usage statistics.
*
* @param bool|string $isEnabled true or 'on' if reporting should be enabled
*/
public static function setReportingEnabled($isEnabled)
{
$value = ($isEnabled === true || $isEnabled === 'on') ? 'on' : 'off';
Property::set(self::ENABLED_ID, $value);
}
/**
* Returns whether remote reporting is enabled or not.
* Defaults to on.
*
* @return bool true if reporting is on, false if off
*/
public static function isReportingEnabled()
{
return Property::get(self::ENABLED_ID, 'on') === 'on';
}
/**
* Get the timestamp of the end of the next 7 day interval to
* report statistics for. Usually if this is < time() you want
* to generate the report.
*
* @return int timestamp of the end of the reporting time frame
*/
public static function getReportingTimestamp()
{
$ts = Property::get(self::NEXT_SUBMIT_ID, 0);
if ($ts === 0) {
// No timestamp stored yet - might be a fresh install
// schedule for next time
self::writeNextReportingTimestamp();
$ts = Property::get(self::NEXT_SUBMIT_ID, 0);
} elseif ($ts < strtotime('last monday - 14 days')) {
// Too long ago, move forward
$ts = strtotime('last monday - 14 days');
}
return $ts;
}
/**
* Update the timestamp of the next scheduled statistics report.
* This sets the end of the next 7 day interval to the start of
* next monday (00:00).
*/
public static function writeNextReportingTimestamp()
{
Property::set(self::NEXT_SUBMIT_ID, strtotime('next monday'), 60 * 24 * 14);
}
/**
* Generate the multi-dimensional array containing the anonymized
* (weekly) statistics to report.
*
* @param int $to end timestamp
* @param int[] $days list of days to generate aggregated stats for
* @return array wrapped up statistics, ready for reporting
*/
public static function generateReport(int $to, $days = false) {
if ($days === false) {
$days = [7, 30, 90];
}
GetData::$salt = bin2hex(Util::randomBytes(20, false));
GetData::$lowerTimeBound = 7;
GetData::$upperTimeBound = 20;
$result = array();
foreach ($days as $day) {
if (isset($result['days' . $day]))
continue;
$from = strtotime("-{$day} days", $to);
GetData::$from = $from;
GetData::$to = $to;
$data = array('total' => GetData::total(GETDATA_ANONYMOUS));
$data['perLocation'] = array_values(GetData::perLocation(GETDATA_ANONYMOUS));
$data['perVM'] = GetData::perVM(GETDATA_ANONYMOUS);
$data['tsFrom'] = $from;
$data['tsTo'] = $to;
$data['dozmod'] = Queries::getDozmodStats($from, $to);
$data['machines'] = Queries::getAggregatedMachineStats($from);
$data['exams'] = Queries::getExamStats($from, $to);
$data['baseSystem'] = Queries::getBaseSystemStats($from, $to);
$data['runmode'] = Queries::getRunmodeStats($from, $to);
$result['days' . $day] = $data;
}
$result['server'] = self::getLocalHardware();
$result['version'] = CONFIG_FOOTER;
return $result;
}
private static function getLocalHardware()
{
$cpuInfo = file_get_contents('/proc/cpuinfo');
$uptime = file_get_contents('/proc/uptime');
$memInfo = file_get_contents('/proc/meminfo');
preg_match_all('/\b(\w+):\s+(\d+)\s/s', $memInfo, $out, PREG_SET_ORDER);
$mem = array();
foreach ($out as $e) {
$mem[$e[1]] = $e[2];
}
//
$data = array();
$data['cpuCount'] = preg_match_all('/\bmodel name\s+:\s+(.*)$/m', $cpuInfo, $out);
if ($data['cpuCount'] > 0) {
$data['cpuModel'] = $out[1][0];
}
if (preg_match('/^(\d+)\D/', $uptime, $out)) {
$data['uptime'] = $out[1];
}
if (isset($mem['MemTotal']) && isset($mem['MemFree']) && isset($mem['SwapTotal'])) {
$data['memTotal'] = $mem['MemTotal'];
$data['memFree'] = ($mem['MemFree'] + $mem['Buffers'] + $mem['Cached']);
$data['swapTotal'] = $mem['SwapTotal'];
$data['swapUsed'] = ($mem['SwapTotal'] - $mem['SwapFree']);
}
return $data;
}
}
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