Files
ops-Gazelle/classes/util.php
2020-03-02 09:39:59 +00:00

249 lines
7.7 KiB
PHP

<?php
// This is a file of miscellaneous functions that are called so damn often
// that it'd just be annoying to stick them in namespaces.
use Gazelle\Util\{Type, Time, Irc};
/**
* Return true if the given string is an integer. The original Gazelle developers
* must have thought the only numbers out there were integers when naming this function.
*
* @param mixed $Str
* @return bool
*/
if (PHP_INT_SIZE === 4) {
function is_number($Str) {
if ($Str === null || $Str === '') {
return false;
}
if (is_int($Str)) {
return true;
}
if ($Str[0] == '-' || $Str[0] == '+') { // Leading plus/minus signs are ok
$Str[0] = 0;
}
return ltrim($Str, "0..9") === '';
}
} else {
function is_number($Str) {
return Type::isInteger($Str);
}
}
function is_date($Date) {
return Time::isValidDate($Date);
}
/**
* Check that some given variables (usually in _GET or _POST) are numbers
*
* @param array $Base array that's supposed to contain all keys to check
* @param array $Keys list of keys to check
* @param mixed $Error error code or string to pass to the error() function if a key isn't numeric
*/
function assert_numbers(&$Base, $Keys, $Error = 0) {
// make sure both arguments are arrays
if (!is_array($Base) || !is_array($Keys)) {
return;
}
foreach ($Keys as $Key) {
if (!isset($Base[$Key]) || !is_number($Base[$Key])) {
error($Error);
}
}
}
/**
* Return true, false or null, depending on the input value's "truthiness" or "non-truthiness"
*
* @param $Value the input value to check for truthiness
* @return true if $Value is "truthy", false if it is "non-truthy" or null if $Value was not
* a bool-like value
*/
function is_bool_value($Value) {
return Type::isBoolValue($Value);
}
/**
* HTML-escape a string for output.
* This is preferable to htmlspecialchars because it doesn't screw up upon a double escape.
*
* @param string $Str
* @return string escaped string.
*/
function display_str($Str) {
if ($Str === null || $Str === false || is_array($Str)) {
return '';
}
if ($Str != '' && !is_number($Str)) {
$Str = Format::make_utf8($Str);
$Str = mb_convert_encoding($Str, 'HTML-ENTITIES', 'UTF-8');
$Str = preg_replace("/&(?![A-Za-z]{0,4}\w{2,3};|#[0-9]{2,6};)/m", '&amp;', $Str);
$Replace = [
"'",'"',"<",">",
'&#128;','&#130;','&#131;','&#132;','&#133;','&#134;','&#135;','&#136;',
'&#137;','&#138;','&#139;','&#140;','&#142;','&#145;','&#146;','&#147;',
'&#148;','&#149;','&#150;','&#151;','&#152;','&#153;','&#154;','&#155;',
'&#156;','&#158;','&#159;'
];
$With = [
'&#39;','&quot;','&lt;','&gt;',
'&#8364;','&#8218;','&#402;','&#8222;','&#8230;','&#8224;','&#8225;','&#710;',
'&#8240;','&#352;','&#8249;','&#338;','&#381;','&#8216;','&#8217;','&#8220;',
'&#8221;','&#8226;','&#8211;','&#8212;','&#732;','&#8482;','&#353;','&#8250;',
'&#339;','&#382;','&#376;'
];
$Str = str_replace($Replace, $With, $Str);
}
return $Str;
}
/**
* Un-HTML-escape a string for output.
*
* It's like the above function, but in reverse.
*
* @param string $Str
* @return string unescaped string
*/
function reverse_display_str($Str) {
if ($Str === null || $Str === false || is_array($Str)) {
return '';
}
if ($Str != '' && !is_number($Str)) {
$Replace = [
'&#39;','&quot;','&lt;','&gt;',
'&#8364;','&#8218;','&#402;','&#8222;','&#8230;','&#8224;','&#8225;','&#710;',
'&#8240;','&#352;','&#8249;','&#338;','&#381;','&#8216;','&#8217;','&#8220;',
'&#8221;','&#8226;','&#8211;','&#8212;','&#732;','&#8482;','&#353;','&#8250;',
'&#339;','&#382;','&#376;'
];
$With = [
"'",'"',"<",">",
'&#128;','&#130;','&#131;','&#132;','&#133;','&#134;','&#135;','&#136;',
'&#137;','&#138;','&#139;','&#140;','&#142;','&#145;','&#146;','&#147;',
'&#148;','&#149;','&#150;','&#151;','&#152;','&#153;','&#154;','&#155;',
'&#156;','&#158;','&#159;'
];
$Str = str_replace($Replace, $With, $Str);
$Str = str_replace("&amp;", "&", $Str);
$Str = mb_convert_encoding($Str, 'UTF-8', 'HTML-ENTITIES');
}
return $Str;
}
/**
* Send a message to an IRC bot listening on SOCKET_LISTEN_PORT
*
* @param string $Raw An IRC protocol snippet to send.
*/
function send_irc($Raw) {
Irc::sendRaw($Raw);
}
/**
* Display a critical error and kills the page.
*
* @param string $Error Error type. Automatically supported:
* 403, 404, 0 (invalid input), -1 (invalid request)
* If you use your own string for Error, it becomes the error description.
* @param boolean $NoHTML If true, the header/footer won't be shown, just the description.
* @param string $Log If true, the user is given a link to search $Log in the site log.
*/
function error($Error, $NoHTML = false, $Log = false) {
global $Debug;
require(SERVER_ROOT.'/sections/error/index.php');
$Debug->profile();
die();
}
/**
* Convenience function for check_perms within Permissions class.
*
* @see Permissions::check_perms()
*
* @param string $PermissionName
* @param int $MinClass
* @return bool
*/
function check_perms($PermissionName, $MinClass = 0) {
return Permissions::check_perms($PermissionName, $MinClass);
}
/**
* Print JSON status result with an optional message and die.
* DO NOT USE THIS FUNCTION!
*/
function json_die($Status, $Message="bad parameters") {
json_print($Status, $Message);
die();
}
/**
* Print JSON status result with an optional message.
*/
function json_print($Status, $Message) {
if ($Status == 'success' && $Message) {
print json_encode(['status' => $Status, 'response' => $Message]);
} elseif ($Message) {
print json_encode(['status' => $Status, 'error' => $Message]);
} else {
print json_encode(['status' => $Status, 'response' => []]);
}
}
/**
* Print the site's URL including the appropriate URI scheme, including the trailing slash
*
* @param bool $SSL - whether the URL should be crafted for HTTPS or regular HTTP
* @return url for site
*/
function site_url($SSL = true) {
return $SSL ? 'https://' . SSL_SITE_URL . '/' : 'http://' . NONSSL_SITE_URL . '/';
}
/**
* The text of the pop-up confirmation when burning an FL token.
*
* @param integer $seeders - number of seeders for the torrent
* @return string Warns if there are no seeders on the torrent
*/
function FL_confirmation_msg($seeders, $size) {
$TokensToUse = ceil($size / BYTES_PER_FREELEECH_TOKEN);
/* Coder Beware: this text is emitted as part of a Javascript single quoted string.
* Any apostrophes should be avoided or escaped appropriately (with \\').
*/
return ($seeders == 0)
? 'Warning! This torrent is not seeded at the moment, are you sure you want to use '.$TokensToUse.' Freeleech token(s) here?'
: 'Are you sure you want to use '.$TokensToUse.' Freeleech token(s) here?';
}
/**
* Utility function that unserializes an array, and then if the unserialization fails,
* it'll then return an empty array instead of a null or false which will break downstream
* things that require an incoming array
*
* @param string $array
* @return array
*/
function unserialize_array($array) {
$array = empty($array) ? [] : unserialize($array);
return (empty($array)) ? [] : $array;
}
/**
* Utility function for determining if checkbox should be checked if some $value is set or not
* @param $value
* @return string
*/
function isset_array_checked($array, $value) {
return (isset($array[$value])) ? "checked" : "";
}