<?php
/**
* Statify Filter: StatifyBlacklist_Settings class
*
* This file contains the plugin's settings capabilities.
*
* @package Statify_Blacklist
* @since 1.7
*/
// Quit if accessed directly..
defined( 'ABSPATH' ) || exit;
/**
* Statify Filter settings handling.
*/
class StatifyBlacklist_Settings extends StatifyBlacklist {
/**
* Registers all options using the WP Settings API.
*
* @return void
*/
public static function register_settings() {
register_setting(
'statify-blacklist',
'statify-blacklist',
array(
'sanitize_callback' =>
array( __CLASS__, 'sanitize_options' ),
)
);
// Referer filter.
add_settings_section(
'statifyblacklist-referer',
__( 'Referer filter', 'statify-blacklist' ),
null,
'statify-blacklist'
);
add_settings_field(
'statifyblacklist-referer-active',
__( 'Activate live filter', 'statify-blacklist' ),
array( __CLASS__, 'option_referer_active' ),
'statify-blacklist',
'statifyblacklist-referer'
);
add_settings_field(
'statifyblacklist-referer-cron',
__( 'CronJob execution', 'statify-blacklist' ),
array( __CLASS__, 'option_referer_cron' ),
'statify-blacklist',
'statifyblacklist-referer'
);
add_settings_field(
'statifyblacklist-referer-regexp',
__( 'Matching method', 'statify-blacklist' ),
array( __CLASS__, 'option_referer_regexp' ),
'statify-blacklist',
'statifyblacklist-referer',
array( 'label_for' => 'statifyblacklist-referer-regexp' )
);
add_settings_field(
'statifyblacklist-referer-blacklist',
__( 'Referer filter', 'statify-blacklist' ),
array( __CLASS__, 'option_referer_blacklist' ),
'statify-blacklist',
'statifyblacklist-referer',
array( 'label_for' => 'statifyblacklist-referer-blacklist' )
);
// Target filter.
add_settings_section(
'statifyblacklist-target',
__( 'Target filter', 'statify-blacklist' ),
null,
'statify-blacklist'
);
add_settings_field(
'statifyblacklist-target-active',
__( 'Activate live filter', 'statify-blacklist' ),
array( __CLASS__, 'option_target_active' ),
'statify-blacklist',
'statifyblacklist-target'
);
add_settings_field(
'statifyblacklist-target-cron',
__( 'CronJob execution', 'statify-blacklist' ),
array( __CLASS__, 'option_target_cron' ),
'statify-blacklist',
'statifyblacklist-target'
);
add_settings_field(
'statifyblacklist-target-regexp',
__( 'Matching method', 'statify-blacklist' ),
array( __CLASS__, 'option_target_regexp' ),
'statify-blacklist',
'statifyblacklist-target',
array( 'label_for' => 'statifyblacklist-target-regexp' )
);
add_settings_field(
'statifyblacklist-target-blacklist',
__( 'Target filter', 'statify-blacklist' ),
array( __CLASS__, 'option_target_blacklist' ),
'statify-blacklist',
'statifyblacklist-target',
array( 'label_for' => 'statifyblacklist-target-blacklist' )
);
// IP filter.
add_settings_section(
'statifyblacklist-ip',
__( 'IP filter', 'statify-blacklist' ),
null,
'statify-blacklist'
);
add_settings_field(
'statifyblacklist-ip-active',
__( 'Activate live filter', 'statify-blacklist' ),
array( __CLASS__, 'option_ip_active' ),
'statify-blacklist',
'statifyblacklist-ip'
);
add_settings_field(
'statifyblacklist-ip-blacklist',
__( 'IP filter', 'statify-blacklist' ),
array( __CLASS__, 'option_ip_blacklist' ),
'statify-blacklist',
'statifyblacklist-ip',
array( 'label_for' => 'statifyblacklist-ip-blacklist' )
);
// User agent filter.
add_settings_section(
'statifyblacklist-ua',
__( 'User agent filter', 'statify-blacklist' ),
null,
'statify-blacklist'
);
add_settings_field(
'statifyblacklist-ua-active',
__( 'Activate live filter', 'statify-blacklist' ),
array( __CLASS__, 'option_ua_active' ),
'statify-blacklist',
'statifyblacklist-ua'
);
add_settings_field(
'statifyblacklist-ua-regexp',
__( 'Matching method', 'statify-blacklist' ),
array( __CLASS__, 'option_ua_regexp' ),
'statify-blacklist',
'statifyblacklist-ua',
array( 'label_for' => 'statifyblacklist-ua-regexp' )
);
add_settings_field(
'statifyblacklist-ua-blacklist',
__( 'User agent filter', 'statify-blacklist' ),
array( __CLASS__, 'option_ua_blacklist' ),
'statify-blacklist',
'statifyblacklist-ua',
array( 'label_for' => 'statifyblacklist-ua-blacklist' )
);
}
/**
* Creates the settings pages.
*
* @return void
*/
public static function create_settings_page() {
?>
<div class="wrap">
<h1><?php esc_html_e( 'Statify Filter', 'statify-blacklist' ); ?></h1>
<form id="statify-settings" method="post" action="options.php">
<?php
settings_fields( 'statify-blacklist' );
do_settings_sections( 'statify-blacklist' );
submit_button();
?>
<hr>
<input class="button-secondary" type="submit" name="cleanUp"
value="<?php esc_html_e( 'CleanUp Database', 'statify-blacklist' ); ?>"
onclick="return confirm('<?php echo esc_js( __( 'Do you really want to apply filters to database? This cannot be undone.', 'statify-blacklist' ) ); ?>');">
<p class="description">
<?php esc_html_e( 'Applies referer and target filter (even if disabled) to data stored in database.', 'statify-blacklist' ); ?>
<em><?php esc_html_e( 'This cannot be undone!', 'statify-blacklist' ); ?></em>
</p>
</form>
</div>
<?php
}
/*
* Disable some code style rules that are impractical for textarea content:
*
* phpcs:disable Squiz.PHP.EmbeddedPhp.ContentBeforeOpen
* phpcs:disable Squiz.PHP.EmbeddedPhp.ContentAfterEnd
*/
/**
* Option for activating the live referer filter.
*
* @return void
*/
public static function option_referer_active() {
?>
<fieldset>
<legend class="screen-reader-text"><?php esc_html_e( 'Activate live filter', 'statify-blacklist' ); ?></legend>
<label for="statifyblacklist-referer-active">
<input id="statifyblacklist-referer-active" name="statify-blacklist[referer][active]" type="checkbox" value="1" <?php checked( StatifyBlacklist::$options['referer']['active'], 1 ); ?>">
<?php esc_html_e( 'Activate', 'statify-blacklist' ); ?>
</label>
<p class="description">
<?php esc_html_e( 'Filter at time of tracking, before anything is stored', 'statify-blacklist' ); ?>
</p>
</fieldset>
<?php
}
/**
* Option for activating cron the referer filter.
*
* @return void
*/
public static function option_referer_cron() {
?>
<fieldset>
<legend class="screen-reader-text"><?php esc_html_e( 'CronJob execution', 'statify-blacklist' ); ?></legend>
<label for="statifyblacklist-referer-cron">
<input id="statifyblacklist-referer-cron" name="statify-blacklist[referer][cron]" type="checkbox" value="1" <?php checked( StatifyBlacklist::$options['referer']['cron'], 1 ); ?>">
<?php esc_html_e( 'Activate', 'statify-blacklist' ); ?>
</label>
<p class="description">
<?php esc_html_e( 'Periodically clean up database in background', 'statify-blacklist' ); ?>
</p>
</fieldset>
<?php
}
/**
* Option for referer matching method.
*
* @return void
*/
public static function option_referer_regexp() {
?>
<select id="statifyblacklist-referer-regexp" name="statify-blacklist[referer][regexp]">
<option value="<?php print esc_attr( StatifyBlacklist::MODE_NORMAL ); ?>" <?php selected( StatifyBlacklist::$options['referer']['regexp'], StatifyBlacklist::MODE_NORMAL ); ?>>
<?php esc_html_e( 'Domain', 'statify-blacklist' ); ?>
</option>
<option value="<?php print esc_attr( StatifyBlacklist::MODE_KEYWORD ); ?>" <?php selected( StatifyBlacklist::$options['referer']['regexp'], StatifyBlacklist::MODE_KEYWORD ); ?>>
<?php esc_html_e( 'Keyword', 'statify-blacklist' ); ?>
</option>
<option value="<?php print esc_attr( StatifyBlacklist::MODE_REGEX ); ?>" <?php selected( StatifyBlacklist::$options['referer']['regexp'], StatifyBlacklist::MODE_REGEX ); ?>>
<?php esc_html_e( 'RegEx case-sensitive', 'statify-blacklist' ); ?>
</option>
<option value="<?php print esc_attr( StatifyBlacklist::MODE_REGEX_CI ); ?>" <?php selected( StatifyBlacklist::$options['referer']['regexp'], StatifyBlacklist::MODE_REGEX_CI ); ?>>
<?php esc_html_e( 'RegEx case-insensitive', 'statify-blacklist' ); ?>
</option>
</select>
<p class="description">
<?php esc_html_e( 'Domain', 'statify-blacklist' ); ?> - <?php esc_html_e( 'Match given domain including subdomains', 'statify-blacklist' ); ?>
<br>
<?php esc_html_e( 'Keyword', 'statify-blacklist' ); ?> - <?php esc_html_e( 'Match every referer that contains one of the keywords', 'statify-blacklist' ); ?>
<br>
<?php esc_html_e( 'RegEx', 'statify-blacklist' ); ?> - <?php esc_html_e( 'Match referer by regular expression', 'statify-blacklist' ); ?>
</p>
<?php
}
/**
* Option for the referer filter list.
*
* @return void
*/
public static function option_referer_blacklist() {
?>
<textarea id="statifyblacklist-referer-blacklist" name="statify-blacklist[referer][blacklist]" cols="40" rows="5"><?php
print esc_html( implode( "\r\n", array_keys( StatifyBlacklist::$options['referer']['blacklist'] ) ) );
?></textarea>
<p class="description">
<?php esc_html_e( 'Add one domain (without subdomains) each line, e.g. example.com', 'statify-blacklist' ); ?>
</p>
<?php
}
/**
* Option for activating the live target filter.
*
* @return void
*/
public static function option_target_active() {
?>
<fieldset>
<legend class="screen-reader-text"><?php esc_html_e( 'Activate live filter', 'statify-blacklist' ); ?></legend>
<label for="statifyblacklist-target-active">
<input id="statifyblacklist-target-active" name="statify-blacklist[target][active]" type="checkbox" value="1" <?php checked( StatifyBlacklist::$options['target']['active'], 1 ); ?>">
<?php esc_html_e( 'Activate', 'statify-blacklist' ); ?>
</label>
<p class="description">
<?php esc_html_e( 'Filter at time of tracking, before anything is stored', 'statify-blacklist' ); ?>
</p>
</fieldset>
<?php
}
/**
* Option for activating cron the target filter.
*
* @return void
*/
public static function option_target_cron() {
?>
<fieldset>
<legend class="screen-reader-text"><?php esc_html_e( 'CronJob execution', 'statify-blacklist' ); ?></legend>
<label for="statifyblacklist-target-cron">
<input id="statifyblacklist-target-cron" name="statify-blacklist[target][cron]" type="checkbox" value="1" <?php checked( StatifyBlacklist::$options['target']['cron'], 1 ); ?>">
<?php esc_html_e( 'Activate', 'statify-blacklist' ); ?>
</label>
<p class="description">
<?php esc_html_e( 'Clean database periodically in background', 'statify-blacklist' ); ?>
</p>
</fieldset>
<?php
}
/**
* Option for target matching method.
*
* @return void
*/
public static function option_target_regexp() {
?>
<select id="statifyblacklist-target-regexp" name="statify-blacklist[target][regexp]">
<option value="<?php print esc_attr( StatifyBlacklist::MODE_NORMAL ); ?>" <?php selected( StatifyBlacklist::$options['target']['regexp'], StatifyBlacklist::MODE_NORMAL ); ?>>
<?php esc_html_e( 'Exact', 'statify-blacklist' ); ?>
</option>
<option value="<?php print esc_attr( StatifyBlacklist::MODE_REGEX ); ?>" <?php selected( StatifyBlacklist::$options['target']['regexp'], StatifyBlacklist::MODE_REGEX ); ?>>
<?php esc_html_e( 'RegEx case-sensitive', 'statify-blacklist' ); ?>
</option>
<option value="<?php print esc_attr( StatifyBlacklist::MODE_REGEX_CI ); ?>" <?php selected( StatifyBlacklist::$options['target']['regexp'], StatifyBlacklist::MODE_REGEX_CI ); ?>>
<?php esc_html_e( 'RegEx case-insensitive', 'statify-blacklist' ); ?>
</option>
</select>
<p class="description">
<?php esc_html_e( 'Exact', 'statify-blacklist' ); ?> - <?php esc_html_e( 'Match only given targets', 'statify-blacklist' ); ?>
<br>
<?php esc_html_e( 'RegEx', 'statify-blacklist' ); ?> - <?php esc_html_e( 'Match target by regular expression', 'statify-blacklist' ); ?>
</p>
<?php
}
/**
* Option for the target filter list.
*
* @return void
*/
public static function option_target_blacklist() {
?>
<textarea id="statifyblacklist-target-blacklist" name="statify-blacklist[target][blacklist]" cols="40" rows="5"><?php
print esc_html( implode( "\r\n", array_keys( StatifyBlacklist::$options['target']['blacklist'] ) ) );
?></textarea>
<p class="description">
<?php esc_html_e( 'Add one target URL each line, e.g.', 'statify-blacklist' ); ?> /, /test/page/, /?page_id=123
</p>
<?php
}
/**
* Option for activating the live IP filter.
*
* @return void
*/
public static function option_ip_active() {
?>
<fieldset>
<legend class="screen-reader-text"><?php esc_html_e( 'Activate live filter', 'statify-blacklist' ); ?></legend>
<label for="statifyblacklist-ip-active">
<input id="statifyblacklist-ip-active" name="statify-blacklist[ip][active]" type="checkbox" value="1" <?php checked( StatifyBlacklist::$options['ip']['active'], 1 ); ?>">
<?php esc_html_e( 'Activate', 'statify-blacklist' ); ?>
</label>
<p class="description">
<?php esc_html_e( 'Filter at time of tracking, before anything is stored', 'statify-blacklist' ); ?>
<br>
<?php esc_html_e( 'Cron execution is not possible for IP filter, because IP addresses are not stored.', 'statify-blacklist' ); ?>
</p>
</fieldset>
<?php
}
/**
* Option for the IP filter list.
*
* @return void
*/
public static function option_ip_blacklist() {
?>
<textarea id="statifyblacklist-ip-blacklist" name="statify-blacklist[ip][blacklist]" cols="40" rows="5"><?php
print esc_html( implode( "\r\n", StatifyBlacklist::$options['ip']['blacklist'] ) );
?></textarea>
<p class="description">
<?php esc_html_e( 'Add one IP address or range per line, e.g.', 'statify-blacklist' ); ?>
127.0.0.1, 192.168.123.0/24, 2001:db8:a0b:12f0::1/64
</p>
<?php
}
/**
* Option for activating the live user agent filter.
*
* @return void
*/
public static function option_ua_active() {
?>
<label for="statifyblacklist-ua-active">
<input id="statifyblacklist-ua-active" name="statify-blacklist[ua][active]" type="checkbox" value="1" <?php checked( StatifyBlacklist::$options['ua']['active'], 1 ); ?>">
<?php esc_html_e( 'Activate', 'statify-blacklist' ); ?>
</label>
<p class="description">
<?php esc_html_e( 'Filter at time of tracking, before anything is stored', 'statify-blacklist' ); ?>
<br>
<?php esc_html_e( 'Cron execution is not possible for user agent filter, because the user agent is stored.', 'statify-blacklist' ); ?>
</p>
<?php
}
/**
* Option for user agent matching method.
*
* @return void
*/
public static function option_ua_regexp() {
?>
<select id="statifyblacklist-ua-regexp" name="statify-blacklist[ua][regexp]">
<option value="<?php print esc_attr( StatifyBlacklist::MODE_NORMAL ); ?>" <?php selected( StatifyBlacklist::$options['ua']['regexp'], StatifyBlacklist::MODE_NORMAL ); ?>>
<?php esc_html_e( 'Exact', 'statify-blacklist' ); ?>
</option>
<option value="<?php print esc_attr( StatifyBlacklist::MODE_KEYWORD ); ?>" <?php selected( StatifyBlacklist::$options['ua']['regexp'], StatifyBlacklist::MODE_KEYWORD ); ?>>
<?php esc_html_e( 'Keyword', 'statify-blacklist' ); ?>
</option>
<option value="<?php print esc_attr( StatifyBlacklist::MODE_REGEX ); ?>" <?php selected( StatifyBlacklist::$options['ua']['regexp'], StatifyBlacklist::MODE_REGEX ); ?>>
<?php esc_html_e( 'RegEx case-sensitive', 'statify-blacklist' ); ?>
</option>
<option value="<?php print esc_attr( StatifyBlacklist::MODE_REGEX_CI ); ?>" <?php selected( StatifyBlacklist::$options['ua']['regexp'], StatifyBlacklist::MODE_REGEX_CI ); ?>>
<?php esc_html_e( 'RegEx case-insensitive', 'statify-blacklist' ); ?>
</option>
</select>
<p class="description">
<?php esc_html_e( 'Exact', 'statify-blacklist' ); ?> - <?php esc_html_e( 'Match only given user agents', 'statify-blacklist' ); ?>
<br>
<?php esc_html_e( 'Keyword', 'statify-blacklist' ); ?> - <?php esc_html_e( 'Match every referer that contains one of the keywords', 'statify-blacklist' ); ?>
<br>
<?php esc_html_e( 'RegEx', 'statify-blacklist' ); ?> - <?php esc_html_e( 'Match user agent by regular expression', 'statify-blacklist' ); ?>
</p>
<?php
}
/**
* Option for the user agent filter list.
*
* @return void
*/
public static function option_ua_blacklist() {
?>
<textarea name="statify-blacklist[ua][blacklist]" id="statifyblacklist-ua-blacklist" cols="40" rows="5"><?php
print esc_html( implode( "\r\n", StatifyBlacklist::$options['ua']['blacklist'] ) );
?></textarea>
<p class="description">
<?php esc_html_e( 'Add one user agent string per line, e.g.', 'statify-blacklist' ); ?>
MyBot/1.23
</p>
<?php
}
/**
* Validate and sanitize submitted options.
*
* @param array $options Original options.
*
* @return array Validated and sanitized options.
*/
public static function sanitize_options( $options ) {
// Extract filter lists from multi-line inputs.
$referer = self::parse_multiline_option( $options['referer']['blacklist'] );
$target = self::parse_multiline_option( $options['target']['blacklist'] );
$ip = self::parse_multiline_option( $options['ip']['blacklist'] );
$ua = self::parse_multiline_option( $options['ua']['blacklist'] );
// Generate options.
$res = array(
'referer' => array(
'active' => isset( $options['referer']['active'] ) ? (int) $options['referer']['active'] : 0,
'cron' => isset( $options['referer']['cron'] ) ? (int) $options['referer']['cron'] : 0,
'regexp' => isset( $options['referer']['regexp'] ) ? (int) $options['referer']['regexp'] : 0,
'blacklist' => array_flip( $referer ),
),
'target' => array(
'active' => isset( $options['target']['active'] ) ? (int) $options['target']['active'] : 0,
'cron' => isset( $options['target']['cron'] ) ? (int) $options['target']['cron'] : 0,
'regexp' => isset( $options['target']['regexp'] ) ? (int) $options['target']['regexp'] : 0,
'blacklist' => array_flip( $target ),
),
'ip' => array(
'active' => isset( $options['ip']['active'] ) ? (int) $options['ip']['active'] : 0,
'blacklist' => $ip,
),
'ua' => array(
'active' => isset( $options['ua']['active'] ) ? (int) $options['ua']['active'] : 0,
'regexp' => isset( $options['ua']['regexp'] ) ? (int) $options['ua']['regexp'] : 0,
'blacklist' => array_flip( $ua ),
),
'version' => StatifyBlacklist::VERSION_MAIN,
);
// Apply sanitizations.
self::sanitize_referer_options( $res['referer'] );
self::sanitize_target_options( $res['target'] );
self::sanitize_ip_options( $res['ip'] );
return $res;
}
/**
* Sanitize referer options.
*
* @param array $options Original referer options.
*
* @return void
*
* @since 1.7.0
*/
private static function sanitize_referer_options( &$options ) {
$referer_given = $options['blacklist'];
$referer_invalid = array();
if ( StatifyBlacklist::MODE_NORMAL === $options['regexp'] ) {
// Sanitize URLs and remove empty inputs.
$referer_sanitized = self::sanitize_urls( $referer_given );
} elseif ( StatifyBlacklist::MODE_REGEX === $options['regexp'] || StatifyBlacklist::MODE_REGEX_CI === $options['regexp'] ) {
$referer_sanitized = $referer_given;
// Check regular expressions.
$referer_invalid = self::sanitize_regex( $referer_given );
} else {
$referer_sanitized = $referer_given;
}
$referer_diff = array_diff_key( $referer_given, $referer_sanitized );
$options['blacklist'] = $referer_sanitized;
// Generate messages.
if ( ! empty( $referer_diff ) ) {
add_settings_error(
'statify-blacklist',
'referer-diff',
__( 'Some URLs are invalid and have been sanitized.', 'statify-blacklist' ),
'warning'
);
}
if ( ! empty( $referer_invalid ) ) {
add_settings_error(
'statify-blacklist',
'referer-invalid',
__( 'Some regular expressions for referrers are invalid:', 'statify-blacklist' ) . '<br>' . implode( '<br>', $referer_invalid )
);
}
}
/**
* Sanitize target options.
*
* @param array $options Original target options.
*
* @return void
*
* @since 1.7.0
*/
private static function sanitize_target_options( &$options ) {
$target_given = $options['blacklist'];
$target_invalid = array();
if ( StatifyBlacklist::MODE_REGEX === $options['regexp'] || StatifyBlacklist::MODE_REGEX_CI === $options['regexp'] ) {
$target_sanitized = $target_given;
// Check regular expressions.
$target_invalid = self::sanitize_regex( $target_given );
} else {
$target_sanitized = $target_given;
}
$options['blacklist'] = $target_sanitized;
// Generate messages.
if ( ! empty( $target_invalid ) ) {
add_settings_error(
'statify-blacklist',
'target-invalid',
__( 'Some regular expressions for targets are invalid:', 'statify-blacklist' ) . '<br>' . implode( '<br>', $target_invalid )
);
}
}
/**
* Sanitize IPs and subnets and remove empty inputs.
*
* @param array $options Original IP options.
*
* @return void
*
* @since 1.7.0
*/
private static function sanitize_ip_options( &$options ) {
$given_ip = $options['blacklist'];
$sanitized_ip = self::sanitize_ips( $given_ip );
$ip_diff = array_diff( $given_ip, $sanitized_ip );
$options['blacklist'] = $sanitized_ip;
// Generate messages.
if ( ! empty( $ip_diff ) ) {
add_settings_error(
'statify-blacklist',
'ip-diff',
// translators: List of invalid IP addresses (comma separated).
sprintf( __( 'Some IPs are invalid: %s', 'statify-blacklist' ), implode( ', ', $ip_diff ) ),
'warning'
);
}
}
/**
* Sanitize URLs and remove empty results.
*
* @param array $urls given array of URLs.
*
* @return array sanitized array.
*
* @since 1.1.1
* @since 1.7.0 moved from StatifyBlacklist_Admin to StatifyBlacklist_Settings.
*/
private static function sanitize_urls( $urls ) {
return array_flip(
array_filter(
array_map(
function ( $r ) {
return preg_replace( '/[^\da-z\.-]/i', '', filter_var( $r, FILTER_SANITIZE_URL ) );
},
array_flip( $urls )
)
)
);
}
/**
* Sanitize IP addresses with optional CIDR notation and remove empty results.
*
* @param array $ips given array of URLs.
*
* @return array sanitized array.
*
* @since 1.4.0
* @since 1.7.0 moved from StatifyBlacklist_Admin to StatifyBlacklist_Settings.
*/
private static function sanitize_ips( $ips ) {
return array_values(
array_unique(
array_filter(
array_map( 'strtolower', $ips ),
function ( $ip ) {
return preg_match(
'/^((25[0-5]|(2[0-4]|1?[0-9])?[0-9])\.){3}(25[0-5]|(2[0-4]|1?[0-9])?[0-9])(\/([0-9]|[1-2][0-9]|3[0-2]))?$/',
$ip
) ||
preg_match(
'/^(([0-9a-f]{1,4}:){7}[0-9a-f]{1,4}|([0-9a-f]{1,4}:){1,7}:|([0-9a-f]{1,4}:){1,6}:[0-9a-f]{1,4}' .
'|([0-9a-f]{1,4}:){1,5}(:[0-9a-f]{1,4}){1,2}|([0-9a-f]{1,4}:){1,4}(:[0-9a-f]{1,4}){1,3}' .
'|([0-9a-f]{1,4}:){1,3}(:[0-9a-f]{1,4}){1,4}|([0-9a-f]{1,4}:){1,2}(:[0-9a-f]{1,4}){1,5}' .
'|[0-9a-f]{1,4}:((:[0-9a-f]{1,4}){1,6})|:((:[0-9a-f]{1,4}){1,7}|:)' .
'|fe80:(:[0-9a-f]{0,4}){0,4}%[0-9a-zA-Z]+|::(ffff(:0{1,4})?:)?((25[0-5]|(2[0-4]|1?[0-9])?[0-9])\.){3}(25[0-5]|(2[0-4]' .
'|1?[0-9])?[0-9])|([0-9a-f]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1?[0-9])?[0-9])\.){3}(25[0-5]|(2[0-4]|1?[0-9])?[0-9]))' .
'(\/([0-9]|[1-9][0-9]|1[0-1][0-9]|12[0-8]))?$/',
$ip
);
}
)
)
);
}
/**
* Validate regular expressions, i.e. remove duplicates and empty values and validate others.
*
* @param array $expressions Given pre-sanitized array of regular expressions.
*
* @return array Array of invalid expressions.
*
* @since 1.5.0 #13
* @since 1.7.0 moved from StatifyBlacklist_Admin to StatifyBlacklist_Settings.
*/
private static function sanitize_regex( $expressions ) {
return array_filter(
array_flip( $expressions ),
function ( $re ) {
// Check of preg_match() fails (warnings suppressed).
// phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
return false === @preg_match( StatifyBlacklist::regex( $re, false ), null );
}
);
}
/**
* Parse multi-line option string.
*
* @param string $raw Input string.
*
* @return array Parsed options.
*/
private static function parse_multiline_option( $raw ) {
if ( empty( trim( $raw ) ) ) {
return array();
} else {
return array_filter(
array_map(
function ( $a ) {
return trim( $a );
},
explode( "\r\n", str_replace( '\\\\', '\\', $raw ) )
),
function ( $a ) {
return ! empty( $a );
}
);
}
}
}