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/home/tahkoom/public_html/wp-content/plugins/ninja-forms/includes/Helper.php
<?php if ( ! defined( 'ABSPATH' ) ) exit;
/**
* Class WPN_Helper
*
* The WP Ninjas Static Helper Class
*
* Provides additional helper functionality to WordPress helper functions.
*/
class WPN_Helper
{
/**
* @param $value
* @return array|string
*/
public static function addslashes( $value )
{
$value = is_array($value) ?
array_map('WPN_Helper::addslashes' , $value) :
addslashes($value);
return $value;
}
/**
* @param $input
* @return array|string
*/
public static function utf8_encode( $input ){
if ( is_array( $input ) ) {
return array_map( 'WPN_Helper::utf8_encode' , $input );
} elseif ( function_exists( 'utf8_encode' ) ) {
return static::iso8859_1_to_utf8( $input );
} else {
return $input;
}
}
/**
* Replace utf8_encode with mimicked functionaliy
*
* Deprecated in PHP8 and removed in PHP9
*
* Replacement credit: https://php.watch/versions/8.2/utf8_encode-utf8_decode-deprecated
* and https://github.com/symfony/polyfill-php72/blob/v1.26.0/Php72.php#L32-39
*
* @param string $string
* @return string
*/
public static function iso8859_1_to_utf8( $s) {
if(!is_string($s)){
return $s;
}
$s .= $s;
$len = \strlen($s);
for ($i = $len >> 1, $j = 0; $i < $len; ++$i, ++$j) {
switch (true) {
case $s[$i] < "\x80": $s[$j] = $s[$i]; break;
case $s[$i] < "\xC0": $s[$j] = "\xC2"; $s[++$j] = $s[$i]; break;
default: $s[$j] = "\xC3"; $s[++$j] = \chr(\ord($s[$i]) - 64); break;
}
}
return substr($s, 0, $j);
}
/**
* @param $input
* @return array|string
*/
public static function utf8_decode( $input ){
if ( is_array( $input ) ) {
return array_map( 'WPN_Helper::utf8_decode' , $input );
} elseif ( function_exists( 'utf8_decode' ) ) {
return self::utf8_to_iso8859_1( $input );
} else {
return $input;
}
}
/**
* Replace utf8_decode with mimicked functionaliy
*
* Deprecated in PHP8 and removed in PHP9
*
* Replacement credit: https://php.watch/versions/8.2/utf8_encode-utf8_decode-deprecated
* and https://github.com/symfony/polyfill-php72/blob/v1.26.0/Php72.php#L40-69
*
* @param string $string
* @return string
*/
public static function utf8_to_iso8859_1( $string)
{
if(!is_string($string)){
return $string;
}
$s = (string) $string;
$len = \strlen($s);
for ($i = 0, $j = 0; $i < $len; ++$i, ++$j) {
switch ($s[$i] & "\xF0") {
case "\xC0":
case "\xD0":
$c = (\ord($s[$i] & "\x1F") << 6) | \ord($s[++$i] & "\x3F");
$s[$j] = $c < 256 ? \chr($c) : '?';
break;
case "\xF0":
++$i;
// no break
case "\xE0":
$s[$j] = '?';
$i += 2;
break;
default:
$s[$j] = $s[$i];
}
}
return substr($s, 0, $j);
}
/**
* Function to clean json data before json_decode.
* @since 3.2
* @param $input String
* @return String
*/
public static function json_cleanup( $input ) {
/*
* Remove any unwated (corrupted?) characters from either side of our object.
*/
$l_trim = strpos( $input, '{' );
$r_trim = strrpos( $input, '}' ) - $l_trim + 1;
return substr( $input, $l_trim, $r_trim );
}
/**
* @param $search
* @param $replace
* @param $subject
* @return mixed
*/
public static function str_replace( $search, $replace, $subject ){
if( is_array( $subject ) ){
foreach( $subject as &$oneSubject )
$oneSubject = WPN_Helper::str_replace($search, $replace, $oneSubject);
unset($oneSubject);
return $subject;
} else {
return str_replace($search, $replace, $subject);
}
}
/**
* @param $value
* @param int $flag
* @return array|string
*/
public static function html_entity_decode( $value, $flag = ENT_COMPAT ){
$value = is_array($value) ?
array_map( 'WPN_Helper::html_entity_decode' , $value) :
html_entity_decode( $value, $flag );
return $value;
}
/**
* @param $value
* @return array|string
*/
public static function htmlspecialchars( $value ){
$value = is_array($value) ?
array_map( 'WPN_Helper::htmlspecialchars' , $value) :
htmlspecialchars( $value );
return $value;
}
/**
* @param $value
* @return array|string
*/
public static function stripslashes( $value ){
$value = is_array($value) ?
array_map( 'WPN_Helper::stripslashes' , $value) :
stripslashes($value);
return $value;
}
/**
* @param $value
* @return array|string
*/
public static function esc_html( $value )
{
$value = is_array($value) ?
array_map( 'WPN_Helper::esc_html' , $value) :
esc_html($value);
return $value;
}
/**
* @param $value
* @return array|string
*/
public static function kses_post( $value )
{
$value = is_array( $value ) ?
array_map( 'WPN_Helper::kses_post' , $value ) :
wp_kses_post($value);
return $value;
}
/**
* @param $value
* @return array|string
*/
public static function strip_tags( $value )
{
$value = is_array( $value ) ?
array_map( 'WPN_Helper::strip_tags' , $value ) :
strip_tags( $value );
return $value;
}
/**
* String to Bytes
*
* Converts PHP settings from a string to bytes.
*
* @param $size
* @return float
*/
public static function string_to_bytes( $size )
{
// Remove the non-unit characters from the size.
$unit = preg_replace('/[^bkmgtpezy]/i', '', $size);
// Remove the non-numeric characters from the size.
$size = preg_replace('/[^0-9\.]/', '', $size);
if ( $unit && is_array( $unit ) ) {
// Find the position of the unit in the ordered string which is the power of magnitude to multiply a kilobyte by.
$size *= pow( 1024, stripos( 'bkmgtpezy', $unit[0] ) );
}
return round($size);
}
public static function str_putcsv( $array, $delimiter = ',', $enclosure = '"', $terminator = "\n" ) {
// First convert associative array to numeric indexed array
$workArray = array();
foreach ($array as $key => $value) {
$workArray[] = $value;
}
$returnString = ''; # Initialize return string
$arraySize = count( $workArray ); # Get size of array
for ( $i=0; $i<$arraySize; $i++ ) {
// Nested array, process nest item
if ( is_array( $workArray[$i] ) ) {
$returnString .= self::str_putcsv( $workArray[$i], $delimiter, $enclosure, $terminator );
} else {
switch ( gettype( $workArray[$i] ) ) {
// Manually set some strings
case "NULL": $_spFormat = ''; break;
case "boolean": $_spFormat = ($workArray[$i] == true) ? 'true': 'false'; break;
// Make sure sprintf has a good datatype to work with
case "integer": $_spFormat = '%d'; break;
case "double": $_spFormat = '%0.2f'; break;
case "string": $_spFormat = '%s'; $workArray[$i] = str_replace("$enclosure", "$enclosure$enclosure", $workArray[$i]); break;
// Unknown or invalid items for a csv - note: the datatype of array is already handled above, assuming the data is nested
case "object":
case "resource":
default: $_spFormat = ''; break;
}
$returnString .= sprintf('%2$s'.$_spFormat.'%2$s', $workArray[$i], $enclosure);
$returnString .= ($i < ($arraySize-1)) ? $delimiter : $terminator;
}
}
// Done the workload, return the output information
return $returnString;
}
public static function get_query_string( $key, $default = FALSE )
{
if( ! isset( $_GET[ $key ] ) ) return $default;
$value = self::htmlspecialchars( $_GET[ $key ] );
if( is_array( $value ) ) $value = reset( $value );
return $value;
}
public static function sanitize_text_field( $data )
{
if( is_array( $data ) ){
return array_map( 'WPN_Helper::sanitize_text_field' , $data );
}
return sanitize_text_field( $data );
}
public static function get_plugin_version( $plugin )
{
$plugins = get_plugins();
if( ! isset( $plugins[ $plugin ] ) ) return false;
return $plugins[ $plugin ][ 'Version' ];
}
public static function is_func_disabled( $function )
{
if( ! function_exists( $function ) ) return true;
$disabled = explode( ',', ini_get( 'disable_functions' ) );
return in_array( $function, $disabled );
}
public static function maybe_unserialize( $original )
{
// Repalcement for https://codex.wordpress.org/Function_Reference/maybe_unserialize
if ( is_serialized( $original ) ){
// Ported with php5.2 support from https://magp.ie/2014/08/13/php-unserialize-string-after-non-utf8-characters-stripped-out/
$parsed = preg_replace_callback( '!s:(\d+):"(.*?)";!s', 'WPN_Helper::parse_utf8_serialized' , $original );
$parsed = @unserialize( $parsed );
return ( $parsed ) ? $parsed : unserialize( $original ); // Fallback if parse error.
}
return $original;
}
/**
* Function to fetch our cache from the upgrades table (if it exists there).
*
* @param $id (int) The form ID.
*
* @since 3.3.7
*/
public static function get_nf_cache( $id ) {
// See if we have the data in our table already.
global $wpdb;
$sql = "SELECT cache FROM `{$wpdb->prefix}nf3_upgrades` WHERE id = " . intval( $id );
$result = $wpdb->get_results( $sql, 'ARRAY_A' );
// If so...
if ( ! empty( $result ) ) {
// Unserialize the result.
$value = WPN_Helper::maybe_unserialize( $result[ 0 ][ 'cache' ] );
// Return it.
return $value;
} // Otherwise... (We don't have the data.)
else {
// Get it from the options table.
return get_option( 'nf_form_' . $id );
}
}
/**
* Function to insert or update our cache in the upgrades table (if it exists).
*
* @param $id (int) The form ID.
* @param $data (string) The form cache.
* @param $stage (int) The target stage of this update. Default to the current max stage.
*
* @since 3.3.7
* @updated 3.4.0
*/
public static function update_nf_cache( $id, $data, $stage = 0 ) {
$stage = ( $stage ) ? $stage : WPN_Helper::get_stage();
// Serialize our data.
$cache = serialize( $data );
global $wpdb;
// See if we've already got a record.
$sql = "SELECT id FROM `{$wpdb->prefix}nf3_upgrades` WHERE id = " . intval( $id );
$result = $wpdb->get_results( $sql, 'ARRAY_A' );
// If we don't already have the data...
if ( empty( $result ) ) {
// Insert it.
$sql = $wpdb->prepare( "INSERT INTO `{$wpdb->prefix}nf3_upgrades` (id, cache, stage) VALUES (%d, %s, %s)", intval( $id ), $cache, intval( $stage ) );
} // Otherwise... (We do have the data.)
else {
// Update the existing record.
$sql = $wpdb->prepare( "UPDATE `{$wpdb->prefix}nf3_upgrades` SET cache = %s, stage = %d WHERE id = %d", $cache, intval( $stage ), intval( $id ) );
}
$wpdb->query( $sql );
}
/**
* Function to retrieve our upgrade stage.
* Remove this after the cache has been resolved.
*
* @return int
*
* @since 3.4.0
*/
public static function get_stage() {
$ver = static::getNfDbVersion();
$stack = explode( '.', $ver );
return intval( array_pop( $stack ) );
}
/**
* Provide the current Ninja Forms database version.
*
* @return string
*/
protected static function getNfDbVersion( ):string {
$ver = Ninja_Forms::$db_version;
return $ver;
}
/**
* Function to build our form cache from the table.
*
* @param $id (int) The form ID.
* @since 3.3.18
* @return $form_cache Array of form data.
* @updated 3.4.0
*/
public static function build_nf_cache( $id ) {
$form = Ninja_Forms()->form( $id )->get();
$form_cache = array(
'id' => $id,
'fields' => array(),
'actions' => array(),
'settings' => $form->get_settings(),
);
$fields = Ninja_Forms()->form( $id )->get_fields();
foreach( $fields as $field ){
// If the field is set.
if ( ! is_null( $field ) && ! empty( $field ) ) {
array_push( $form_cache[ 'fields' ], array( 'settings' => $field->get_settings(), 'id' => $field->get_id() ) );
}
}
$actions = Ninja_Forms()->form( $id )->get_actions();
foreach( $actions as $action ){
// If the action is set.
if ( ! is_null( $action ) && ! empty( $action ) ) {
array_push( $form_cache[ 'actions' ], array( 'settings' => $action->get_settings(), 'id' => $action->get_id() ) );
}
}
static::update_nf_cache( $id, $form_cache );
return $form_cache;
}
/**
* Function to delete our cache.
*
* @param $id (int) The form ID.
*
* @since 3.3.7
*/
public static function delete_nf_cache( $id ) {
global $wpdb;
$sql = "DELETE FROM `{$wpdb->prefix}nf3_upgrades` WHERE id = " . intval( $id );
$wpdb->query( $sql );
delete_option( 'nf_form_' . intval( $id ) );
}
private static function parse_utf8_serialized( $matches )
{
if ( isset( $matches[2] ) ){
return 's:'.strlen($matches[2]).':"'.$matches[2].'";';
}
}
/**
* This funtion gets/creates the Ninja Forms gate keeper( a random integer
* between 1 and 100 ). We will use this number when deciding whether a
* particular install is eligible for an upgrade or whatever else we decide
* to use it for
*
* @return int $zuul
*
* @since 3.4.0
*/
public static function get_zuul() {
$zuul = get_option( 'ninja_forms_zuul', -1 );
if( -1 === $zuul ) {
$zuul = rand( 1, 100 );
update_option( 'ninja_forms_zuul', $zuul, false );
}
return $zuul;
}
/**
* This function will return true/false based on an option( ninja_forms_zuul )
* and a threshold that we set. We can use this to limit updates
*
* @param $threshold
*
* @return bool
*
* @since 3.4.0
*/
public static function gated_release( $threshold = 0 ) {
$gatekeeper = $threshold >= self::get_zuul();
$gatekeeper = apply_filters( 'ninja_forms_gatekeeper', $gatekeeper );
return $gatekeeper;
}
/**
* Is Maintenance
*
* Checks the upgrades table to see if the form the user is viewing
* is under maintenance mode.
*
* @since 3.4.0
*
* @param $form_id - The ID of the form we are checking.
*
* @return boolean
*/
public static function form_in_maintenance( $form_id ) {
global $wpdb;
$db_version = get_option( 'ninja_forms_db_version' );
if( ! $db_version ) return false;
// Exit early if the column doesn't exist.
if( version_compare( '1.3', $db_version, '>' ) ) return false;
// Get our maintenance value from the DB and return it at the zero position.
$maintenance = $wpdb->get_row(
"SELECT `maintenance` FROM `{$wpdb->prefix}nf3_upgrades` WHERE `id` = {$form_id}", 'ARRAY_A'
);
/*
* If maintenance isn't empty and basic on maintenance's value
* return a boolean value.
*/
if( ! empty( $maintenance ) && 1 == $maintenance[ 'maintenance' ] ) {
return true;
} else {
return false;
}
}
/**
* This function either put all forms in maintenance mode or remove maintenance
* mode for all forms. Depending on the input parameters
*
* @since 3.4.0
*
* @param $mode - Default 0 ( Take all forms out of maintenance mode )
*/
public static function set_forms_maintenance_mode( $mode = 0 ) {
global $wpdb;
// default is 0, so if we get passed bad data, just use 0
if( ! in_array( $mode, array( 0, 1 ) ) ) {
$mode = 0;
}
// set maintenance flag to $mode (0 or 1)
$sql = $wpdb->prepare( "UPDATE `{$wpdb->prefix}nf3_upgrades` SET "
. "maintenance = %d", intval( $mode ) );
$wpdb->query( $sql );
}
/**
* We'll use to determine if we need to use the form cache or not. This will
* be used for all users not on the newest version of the database
*
* @return boolean
*/
public static function use_cache() {
return true;
$cache_mode = intval( get_option('ninja_forms_cache_mode') );
// if we've already decided to use the cache return true and exit.
if( 0 < $cache_mode ) return true;
$db_version = get_option('ninja_forms_db_version');
// If not in cache mode, get the db version and return true if we aren't at a certain threshold version-wise
if( ! $db_version || version_compare($db_version, '1.4', '<' )) {
return true;
}
$finished_updates = get_option( 'ninja_forms_required_updates', false );
// make sure we've run the lastest update to reconcile db with cache field values
if( $finished_updates && !isset( $finished_updates[ 'CacheFieldReconcilliation' ] ) ) {
return true;
}
return false;
}
/**
* Sanitizes single/multiple CSS classNames
*
* Explodes on space, sanitize each className, implode with space to recombine
* @param string $value
* @return string
*/
public static function sanitize_classes($value):string {
$outgoing = $value;
$sanitized = [];
$exploded = explode(' ',$value);
foreach($exploded as $singleClass){
$sanitized[] = sanitize_html_class($singleClass);
}
$outgoing = implode(' ',$sanitized);
return $outgoing;
}
/**
* Sanitizes string values for field settings
*
* WIP methods can still be implemented for this.
*
* @param string $key Setting name
* @param string $value of setting
* @return string sanitized value for setting
*/
public static function sanitize_string_setting_value($key, $value):string {
if( in_array( $key, ["element_class", "container_class"] ) ) {
$value = self::sanitize_classes($value);
} else if( in_array( $key, ["label", "default"] )){
$value = self::sanitize_text_field($value);
}
return $value;
}
/**
* Check the DISALLOW_UNFILTERED_HTML constant value and return early if true.
* If false, return opposite for 'unfiltered_html' current user capability
*
* @return bool
*/
public static function maybe_disallow_unfiltered_html_for_sanitization():bool {
/**
* Exit early if the config setting is TRUE to mimic WordPress capability check.
*/
if( defined( 'DISALLOW_UNFILTERED_HTML' ) && DISALLOW_UNFILTERED_HTML ) return true;
$disallow_unfiltered_html = ! current_user_can( 'unfiltered_html' );
return $disallow_unfiltered_html;
}
/**
* Check the DISALLOW_UNFILTERED_HTML constant value only on the escaping side
*
* @return bool
*/
public static function maybe_disallow_unfiltered_html_for_escaping():bool {
// Default intentinally left set to false to avoid breaking countless pre-existing forms using this feature.
$disallow_unfiltered_html = defined( 'DISALLOW_UNFILTERED_HTML' ) ? DISALLOW_UNFILTERED_HTML : false;
return $disallow_unfiltered_html;
}
/**
* Sanitize output to csv to prevent formula injection.
*
* @param String $value The value to be escaped.
* @return String
*/
public static function maybe_escape_csv_column( $value ):string {
if (!is_string($value) && !is_numeric($value)) {
if(is_array($value)){
$value = implode(' ', $value);
}else{
throw new Exception('Incoming value to maybe_escape_csv_column is neither string nor array');
}
}
if( 0 < strlen($value ) ) {
$first_char = substr( $value, 0, 1 );
if( in_array( $first_char, array( '=', '@', '+', '-' ) ) ) {
$value = "'" . $value;
}
}
return $value;
}
} // End Class WPN_Helper
عن المجلة – tahkoom.com
في زمنٍ لم تعد فيه الأزرار تُضغط
لسنا مجرد مجلة تقنية… نحن مرآة لعصر تغيّرت فيه موازين السيطرة.
“تحكم” تسأل الأسئلة التي يتجنبها الآخرون:
في صفحاتنا، لا نُجامل الثورة الرقمية… بل نفكّكها، نُحللها، ونطرحها على طاولة النقاش.
نحن لا نُخبرك فقط بما يحدث، بل لماذا يحدث، ولمن، وعلى حساب من.
تحكم… لأنّ من يملك المعلومة، يملك السيطرة.
رسالة المجلة:
رؤية المجلة:
الأقسام:
نحن فريق من طلاب كلية الإعلام، نكتب ونصمّم ونحلّل لنقدّم محتوى أصيلًا، ذكيًا، وواقعيًا. نختار موضوعاتنا بعناية، ونحرص على أن يكون كل ملف نطرحه مساحة للفهم والتساؤل، لا التكرار والإبهار الزائف.
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