807 lines
23 KiB
PHP
807 lines
23 KiB
PHP
<?php
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/**
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* Holds various utility functions.
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*
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* @package Sakura
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*/
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namespace Sakura;
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use PHPMailer;
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/**
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* Meta utility functions.
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*
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* @package Sakura
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* @author Julian van de Groep <me@flash.moe>
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*/
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class Utils
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{
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/**
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* Get the emoticons.
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*
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* @return array Array containing emoticons.
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*/
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public static function getEmotes()
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{
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return Database::fetch('emoticons');
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}
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/**
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* Parse the emoticons.
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*
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* @param string $text String to parse emoticons from.
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*
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* @return string Parsed text.
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*/
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public static function parseEmotes($text)
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{
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// Get emoticons from the database
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$emotes = self::getEmotes();
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// Do the replacements
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foreach ($emotes as $emote) {
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$text = str_replace(
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$emote['emote_string'],
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'<img src="' . $emote['emote_path'] . '" class="emoticon" alt="' . $emote['emote_string'] . '" />',
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$text
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);
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}
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// Return the parsed text
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return $text;
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}
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/**
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* Verify a ReCaptcha
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*
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* @param string $response The user response.
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*
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* @return array The response from the ReCaptcha API.
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*/
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public static function verifyCaptcha($response)
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{
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// Attempt to get the response
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$resp = @file_get_contents(
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'https://www.google.com/recaptcha/api/siteverify?secret='
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. Config::get('recaptcha_private')
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. '&response='
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. $response
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);
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// In the highly unlikely case that it failed to get anything forge a false
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if (!$resp) {
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return false;
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}
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// Decode the response JSON from the servers
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$resp = json_decode($resp, true);
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// Return shit
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return $resp;
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}
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/**
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* The error handler.
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*
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* @param int $errno The error ID.
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* @param string $errstr Quick description of the event.
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* @param string $errfile File the error occurred in.
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* @param int $errline Line the error occurred on.
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*/
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public static function errorHandler($errno, $errstr, $errfile, $errline)
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{
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// Remove ROOT path from the error string and file location
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$errstr = str_replace(ROOT, '', $errstr);
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$errfile = str_replace(ROOT, '', $errfile);
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// Attempt to log the error to the database
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if (Database::$database !== null) {
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// Encode backtrace data
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$backtrace = base64_encode(json_encode(debug_backtrace()));
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// Check if this error has already been logged in the past
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if ($past = Database::fetch(
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'error_log',
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false,
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[
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'error_backtrace' => [$backtrace, '=', true],
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'error_string' => [$errstr, '='],
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'error_line' => [$errline, '='],
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]
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)) {
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// If so assign the errid
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$errid = $past['error_id'];
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} else {
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// Create an error ID
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$errid = substr(md5(microtime()), rand(0, 22), 10);
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// Log the error
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Database::insert('error_log', [
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'error_id' => $errid,
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'error_timestamp' => date("r"),
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'error_revision' => SAKURA_VERSION,
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'error_type' => $errno,
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'error_line' => $errline,
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'error_string' => $errstr,
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'error_file' => $errfile,
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'error_backtrace' => $backtrace,
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]);
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}
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}
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switch ($errno) {
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case E_ERROR:
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case E_USER_ERROR:
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$error = '<b>FATAL ERROR</b>: ' . $errstr . ' on line ' . $errline . ' in ' . $errfile;
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break;
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case E_WARNING:
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case E_USER_WARNING:
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$error = '<b>WARNING</b>: ' . $errstr . ' on line ' . $errline . ' in ' . $errfile;
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break;
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case E_NOTICE:
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case E_USER_NOTICE:
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$error = '<b>NOTICE</b>: ' . $errstr . ' on line ' . $errline . ' in ' . $errfile;
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break;
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default:
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$error = '<b>Unknown error type</b> [' . $errno . ']: ' . $errstr . ' on line ' . $errline
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. ' in ' . $errfile;
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}
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// Truncate all previous outputs
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ob_clean();
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ob_end_clean();
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// Check if this request was made through the ajax thing
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if (isset($_REQUEST['ajax'])) {
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die('An error occurred while executing the script.|1|javascript:alert("' . (isset($errid) ? 'Error Log ID: '. $errid : 'Failed to log.') . '");');
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}
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// Check for dev mode
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$detailed = Config::local('dev', 'show_errors');
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// Build page
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$errorPage = '<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8" />
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<title>Sakura Internal Error</title>
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<style type="text/css">
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body { margin: 0; padding: 0; background: #EEE; color: #000;
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font: 12px/20px Verdana, Arial, Helvetica, sans-serif; }
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h1, h2 { font-weight: 100; background: #CAA; padding: 8px 5px 10px;
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margin: 0; font-style: italic; font-family: serif; }
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h1 { border-radius: 8px 8px 0 0; }
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h2 { margin: 0 -10px; }
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.container { border: 1px solid #CAA; margin: 10px auto; background: #FFF;
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box-shadow: 2px 2px 1em #888; max-width: 1024px; border-radius: 10px; }
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.container .inner { padding: 0 10px; }
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.container .inner .error { background: #555; color: #EEE; border-left: 5px solid #C22;
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padding: 4px 6px; text-shadow: 0 1px 1px #888; white-space: pre-wrap;
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word-wrap: break-word; margin: 12px 0; border-radius: 5px; box-shadow: inset 0 0 1em #333; }
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.container .footer { border-top: 1px solid #CAA; font-size: x-small; padding: 0 5px 1px; }
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a { color: #77E; text-decoration: none; }
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a:hover { text-decoration: underline; }
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a:active { color: #E77; }
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</style>
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</head>
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<body>
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<div class="container">
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<h1>An error occurred while executing the script.</h1>
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<div class="inner">
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<p>To prevent potential security risks or data loss Sakura has stopped execution of the script.</p>';
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if (isset($errid)) {
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$errorPage .= '<p>The error and surrounding data has been logged.</p>
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<h2>' . (!$detailed ? 'Report the following text to a staff member' : 'Logged as') . '</h2>
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<pre class="error">' . $errid . '</pre>';
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} else {
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$errorPage .= '<p>Sakura was not able to log this error which could mean that there was an error
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with the database connection. If you\'re the system administrator check the database credentials
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and make sure the server is running and if you\'re not please let the system administrator
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know about this error if it occurs again.</p>';
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}
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if ($detailed) {
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$errorPage .= ' <h2>Summary</h2>
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<pre class="error">' . $error . '</pre>
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<h2>Backtraces</h2>';
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foreach (debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS) as $num => $trace) {
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$errorPage .= '<h3>#' . $num . '</h3><pre class="error">';
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foreach ($trace as $key => $val) {
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$errorPage .=
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str_pad(
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'[' . $key . ']',
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12
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) . '=> ' . (
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is_array($val) || is_object($val) ?
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json_encode($val) :
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$val
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) . "\r\n";
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}
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$errorPage .= '</pre>';
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}
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}
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$errorPage .= '</div>
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<div class="footer">
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Sakura r' . SAKURA_VERSION . '.
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</div>
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</div>
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</body>
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</html>';
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// Die and display error message
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die($errorPage);
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}
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/**
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* Send an e-mail.
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*
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* @param string $to Destination e-mail.
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* @param string $subject E-mail subject.
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* @param string $body Contents of the message.
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* @return bool|string Return whatever PHPMailer returns.
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*/
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public static function sendMail($to, $subject, $body)
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{
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// Initialise PHPMailer
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$mail = new PHPMailer();
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// Set to SMTP
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$mail->isSMTP();
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// Set the SMTP server host
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$mail->Host = Config::get('smtp_server');
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// Do we require authentication?
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$mail->SMTPAuth = Config::get('smtp_auth');
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// Do we encrypt as well?
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$mail->SMTPSecure = Config::get('smtp_secure');
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// Set the port to the SMTP server
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$mail->Port = Config::get('smtp_port');
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// If authentication is required log in as well
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if (Config::get('smtp_auth')) {
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$mail->Username = Config::get('smtp_username');
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$mail->Password = base64_decode(Config::get('smtp_password'));
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}
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// Add a reply-to header
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$mail->addReplyTo(Config::get('smtp_replyto_mail'), Config::get('smtp_replyto_name'));
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// Set a from address as well
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$mail->setFrom(Config::get('smtp_from_email'), Config::get('smtp_from_name'));
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// Set the addressee
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foreach ($to as $email => $name) {
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$mail->addBCC($email, $name);
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}
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// Subject line
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$mail->Subject = $subject;
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// Set body
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$mail->Body = $body;
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// Send the message
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$send = $mail->send();
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// Clear the addressee list
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$mail->clearAddresses();
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// If we got an error return the error
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if (!$send) {
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return $mail->ErrorInfo;
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}
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// Else just return whatever
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return $send;
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}
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/**
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* Clean a string
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*
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* @param string $string Dirty string.
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* @param bool $lower Make the string lowercase.
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* @param bool $noSpecial String all special characters.
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* @param bool $replaceSpecial Thing to replace special characters with.
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*
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* @return string Clean string.
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*/
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public static function cleanString($string, $lower = false, $noSpecial = false, $replaceSpecial = '')
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{
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// Run common sanitisation function over string
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$string = htmlentities($string, ENT_NOQUOTES | ENT_HTML401, Config::get('charset'));
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$string = stripslashes($string);
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$string = strip_tags($string);
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// If set also make the string lowercase
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if ($lower) {
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$string = strtolower($string);
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}
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// If set remove all characters that aren't a-z or 0-9
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if ($noSpecial) {
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$string = preg_replace('/[^a-z0-9]/', $replaceSpecial, $string);
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}
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// Return clean string
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return $string;
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}
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/**
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* Load contents of an infopage.
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*
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* @param string $id ID of the info page.
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*
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* @return array|bool Contents of the info page.
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*/
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public static function loadInfoPage($id)
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{
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// Get contents from the database
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$infopage = Database::fetch('infopages', false, ['page_shorthand' => [$id, '=']]);
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// Return the data if there is any else just return false
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return count($infopage) ? $infopage : false;
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}
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/**
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* Validate MX records.
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*
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* @param string $email E-mail address.
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*
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* @return bool Success.
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*/
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public static function checkMXRecord($email)
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{
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// Get the domain from the e-mail address
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$domain = substr(strstr($email, '@'), 1);
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// Check the MX record
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$record = checkdnsrr($domain, 'MX');
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// Return the record data
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return $record;
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}
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/**
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* Detect the version of an IP.
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*
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* @param string $ip The IP.
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*
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* @return int Either 0, 4 or 6.
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*/
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public static function ipVersion($ip)
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{
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// Check if var is IP
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if (filter_var($ip, FILTER_VALIDATE_IP)) {
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// IPv4
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if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) {
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return 4;
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}
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// IPv6
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if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
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return 6;
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}
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}
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// Not an IP or unknown type
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return 0;
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}
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/**
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* Unpack an IPv6
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*
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* @param mixed $inet IP address.
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*
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* @return null|string The unpacked IP.
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*/
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public static function inetToBits($inet)
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{
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// Unpack string
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$unpacked = unpack('A16', $inet);
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// Split the string
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$unpacked = str_split($unpacked[1]);
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// Define variable
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$binaryIP = null;
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// "Build" binary IP
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foreach ($unpacked as $char) {
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$binaryIP .= str_pad(decbin(ord($char)), 8, '0', STR_PAD_LEFT);
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}
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// Return IP
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return $binaryIP;
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}
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/**
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* Match a subnet.
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*
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* @param string $ip the IP.
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* @param string $range The range.
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*
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* @return bool|int Success.
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*/
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public static function matchSubnet($ip, $range)
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{
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// Use the proper IP type
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switch (self::ipVersion($ip)) {
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case 4:
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// Break the range up in parts
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list($subnet, $bits) = explode('/', $range);
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// Convert IP and Subnet to long
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$ip = ip2long($ip);
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$subnet = ip2long($subnet);
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$mask = -1 << (32 - $bits);
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// In case the supplied subnet wasn't correctly aligned
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$subnet &= $mask;
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// Return true if IP is in subnet
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return ($ip & $mask) == $subnet;
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case 6:
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// Break the range up in parts
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list($subnet, $bits) = explode('/', $range);
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// Convert subnet to packed address and convert it to binary
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$subnet = inet_pton($subnet);
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$binarySubnet = self::inetToBits($subnet);
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// Convert IPv6 to packed address and convert it to binary as well
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$ip = inet_pton($ip);
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$binaryIP = self::inetToBits($ip);
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// Return bits of the strings according to the bits
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$ipBits = substr($binaryIP, 0, $bits);
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$subnetBits = substr($binarySubnet, 0, $bits);
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return ($ipBits === $subnetBits);
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default:
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return 0;
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}
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}
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/**
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* Check if an IP originates from CloudFlare.
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*
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* @param string $ip The IP.
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*
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* @return bool Success.
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*/
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public static function checkCFIP($ip)
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{
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// Get CloudFlare Subnet list
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$cfhosts = file_get_contents(
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ROOT . Config::local('data', 'cfipv' . (self::ipVersion($ip)))
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);
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// Replace \r\n with \n
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$cfhosts = str_replace("\r\n", "\n", $cfhosts);
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// Explode the file into an array
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$cfhosts = explode("\n", $cfhosts);
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// Check if IP is in a CloudFlare subnet
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foreach ($cfhosts as $subnet) {
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// Check if the subnet isn't empty (git newline prevention)
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if (strlen($subnet) < 1) {
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continue;
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}
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// Return true if found
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if (self::matchSubnet($ip, $subnet)) {
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return true;
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}
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}
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// Return false if fails
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return false;
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}
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/**
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* Get the IP of a visitor.
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*
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* @return string The IP.
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*/
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public static function getRemoteIP()
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{
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// Assign REMOTE_ADDR to a variables
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$ip = $_SERVER['REMOTE_ADDR'];
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// Check if the IP is a CloudFlare IP
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if (self::checkCFIP($ip)) {
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// If it is check if the CloudFlare IP header is set and if it is assign it to the ip variable
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if (isset($_SERVER['HTTP_CF_CONNECTING_IP'])) {
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$ip = $_SERVER['HTTP_CF_CONNECTING_IP'];
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}
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}
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// Return the correct IP
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return $ip;
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}
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/**
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* Get the country code of a visitor.
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*
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* @return string 2 character country code.
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*/
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public static function getCountryCode()
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{
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// Attempt to get country code using PHP's built in geo thing
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if (function_exists("geoip_country_code_by_name")) {
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$code = geoip_country_code_by_name(self::getRemoteIP());
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// Check if $code is anything
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if ($code) {
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return $code;
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}
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}
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// Check if the required header is set and return it
|
|
if (isset($_SERVER['HTTP_CF_IPCOUNTRY'])) {
|
|
return $_SERVER['HTTP_CF_IPCOUNTRY'];
|
|
}
|
|
|
|
// Return XX as a fallback
|
|
return 'XX';
|
|
}
|
|
|
|
/**
|
|
* Check the entropy of a password.
|
|
*
|
|
* @param string $pw Password.
|
|
*
|
|
* @return double|int Entropy.
|
|
*/
|
|
public static function pwdEntropy($pw)
|
|
{
|
|
|
|
// Decode utf-8 chars
|
|
$pw = utf8_decode($pw);
|
|
|
|
// Count the amount of unique characters in the password string and calculate the entropy
|
|
return count(count_chars($pw, 1)) * log(256, 2);
|
|
}
|
|
|
|
/**
|
|
* Get the country name from a 2 character code.
|
|
*
|
|
* @param string $code The country code.
|
|
*
|
|
* @return string The country name.
|
|
*/
|
|
public static function getCountryName($code)
|
|
{
|
|
|
|
// Parse JSON file
|
|
$iso3166 = json_decode(
|
|
utf8_encode(
|
|
file_get_contents(
|
|
ROOT . Config::local('data', 'iso3166')
|
|
)
|
|
),
|
|
true
|
|
);
|
|
|
|
// Check if key exists
|
|
if (array_key_exists($code, $iso3166)) {
|
|
return $iso3166[$code]; // If entry found return the full name
|
|
}
|
|
|
|
// Else return unknown
|
|
return 'Unknown';
|
|
}
|
|
|
|
/**
|
|
* Get the FAQ table data (why is this a function).
|
|
*
|
|
* @return array FAQ data.
|
|
*/
|
|
public static function getFaqData()
|
|
{
|
|
|
|
// Do database call
|
|
$faq = Database::fetch('faq', true, null, ['faq_id']);
|
|
|
|
// Return FAQ data
|
|
return $faq;
|
|
}
|
|
|
|
/**
|
|
* Get the type of log in text (unused and will probably be removwed).
|
|
* @param mixed $type
|
|
* @return mixed
|
|
*/
|
|
public static function getLogStringFromType($type)
|
|
{
|
|
|
|
// Query the database
|
|
$return = Database::fetch('logtypes', false, ['id' => [$type, '=']]);
|
|
|
|
// Check if type exists and else return a unformattable string
|
|
if (count($return) < 2) {
|
|
return 'Unknown action.';
|
|
}
|
|
|
|
// Return the string
|
|
return $return['string'];
|
|
}
|
|
|
|
/**
|
|
* Get a user's logs (unused, probably removed in future).
|
|
* @param mixed $uid
|
|
* @return array
|
|
*/
|
|
public static function getUserLogs($uid = 0)
|
|
{
|
|
|
|
// Check if a user is specified
|
|
$conditions = ($uid ? ['uid' => [$uid, '=']] : null);
|
|
|
|
// Get data from database
|
|
$logsDB = Database::fetch('logs', true, $conditions, ['id', true]);
|
|
|
|
// Storage array
|
|
$logs = [];
|
|
|
|
// Iterate over entries
|
|
foreach ($logsDB as $log) {
|
|
// Store usable data
|
|
$logs[$log['id']] = [
|
|
'user' => $_USER = Users::getUser($log['uid']),
|
|
'rank' => Users::getRank($_USER['rank_main']),
|
|
'string' => vsprintf(self::getLogStringFromType($log['action']), json_decode($log['attribs'], true)),
|
|
];
|
|
}
|
|
|
|
// Return new logs
|
|
return $logs;
|
|
}
|
|
|
|
/**
|
|
* Get the byte symbol for a unit from bytes.
|
|
*
|
|
* @param int $bytes The amount of bytes.
|
|
*
|
|
* @return string The converted amount with the symbol.
|
|
*/
|
|
public static function getByteSymbol($bytes)
|
|
{
|
|
|
|
// Return nothing if the input was 0
|
|
if (!$bytes) {
|
|
return;
|
|
}
|
|
|
|
// Array with byte symbols
|
|
$symbols = ['B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB', 'ZiB', 'YiB'];
|
|
|
|
// Calculate byte entity
|
|
$exp = floor(log($bytes) / log(1024));
|
|
|
|
// Format the things
|
|
$bytes = sprintf("%.2f " . $symbols[$exp], ($bytes / pow(1024, floor($exp))));
|
|
|
|
// Return the formatted string
|
|
return $bytes;
|
|
}
|
|
|
|
/**
|
|
* Get the premium tracker data.
|
|
*
|
|
* @return array The premium tracker data.
|
|
*/
|
|
public static function getPremiumTrackerData()
|
|
{
|
|
|
|
// Create data array
|
|
$data = [];
|
|
|
|
// Get database stuff
|
|
$table = Database::fetch('premium_log', true, null, ['transaction_id', true]);
|
|
|
|
// Add raw table data to data array
|
|
$data['table'] = $table;
|
|
|
|
// Create balance entry
|
|
$data['balance'] = 0.0;
|
|
|
|
// Create users entry
|
|
$data['users'] = [];
|
|
|
|
// Calculate the thing
|
|
foreach ($table as $row) {
|
|
// Calculate balance
|
|
$data['balance'] = $data['balance'] + $row['transaction_amount'];
|
|
|
|
// Add userdata to table
|
|
if (!array_key_exists($row['user_id'], $data['users'])) {
|
|
$data['users'][$row['user_id']] = User::construct($row['user_id']);
|
|
}
|
|
}
|
|
|
|
// Return the data
|
|
return $data;
|
|
}
|
|
|
|
/**
|
|
* Add a new entry to the tracker.
|
|
*
|
|
* @param int $id The user ID.
|
|
* @param float $amount The amount of money.
|
|
* @param string $comment A little information.
|
|
*/
|
|
public static function updatePremiumTracker($id, $amount, $comment)
|
|
{
|
|
Database::insert('premium_log', [
|
|
|
|
'user_id' => $id,
|
|
'transaction_amount' => $amount,
|
|
'transaction_date' => time(),
|
|
'transaction_comment' => $comment,
|
|
|
|
]);
|
|
}
|
|
|
|
/**
|
|
* Clean up the contents of <code> tags.
|
|
*
|
|
* @param string $text Dirty
|
|
*
|
|
* @return string Clean
|
|
*/
|
|
public static function fixCodeTags($text)
|
|
{
|
|
$parts = explode('<code>', $text);
|
|
$newStr = '';
|
|
|
|
if (count($parts) > 1) {
|
|
foreach ($parts as $p) {
|
|
$parts2 = explode('</code>', $p);
|
|
if (count($parts2) > 1) {
|
|
$code = str_replace('<br />', '', $parts2[0]);
|
|
$code = str_replace('<br/>', '', $code);
|
|
$code = str_replace('<br>', '', $code);
|
|
$code = str_replace('<', '<', $code);
|
|
$newStr .= '<code>'.$code.'</code>';
|
|
$newStr .= $parts2[1];
|
|
} else {
|
|
$newStr .= $p;
|
|
}
|
|
}
|
|
} else {
|
|
$newStr = $text;
|
|
}
|
|
|
|
return $newStr;
|
|
}
|
|
}
|