695 lines
16 KiB
PHP
695 lines
16 KiB
PHP
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<?php
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/**
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* Returns path to a plugin file.
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*
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* @param string $path File path relative to the plugin root directory.
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* @return string Absolute file path.
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*/
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function wpcf7_plugin_path( $path = '' ) {
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return path_join( WPCF7_PLUGIN_DIR, trim( $path, '/' ) );
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}
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/**
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* Returns the URL to a plugin file.
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*
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* @param string $path File path relative to the plugin root directory.
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* @return string URL.
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*/
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function wpcf7_plugin_url( $path = '' ) {
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$url = plugins_url( $path, WPCF7_PLUGIN );
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if ( is_ssl()
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and 'http:' == substr( $url, 0, 5 ) ) {
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$url = 'https:' . substr( $url, 5 );
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}
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return $url;
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}
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/**
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* Include a file under WPCF7_PLUGIN_MODULES_DIR.
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*
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* @param string $path File path relative to the module dir.
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* @return bool True on success, false on failure.
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*/
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function wpcf7_include_module_file( $path ) {
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$dir = WPCF7_PLUGIN_MODULES_DIR;
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if ( empty( $dir ) or ! is_dir( $dir ) ) {
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return false;
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}
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$path = path_join( $dir, ltrim( $path, '/' ) );
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if ( file_exists( $path ) ) {
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include_once $path;
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return true;
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}
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return false;
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}
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/**
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* Retrieves uploads directory information.
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*
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* @param string|bool $type Optional. Type of output. Default false.
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* @return array|string Information about the upload directory.
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*/
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function wpcf7_upload_dir( $type = false ) {
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$uploads = wp_get_upload_dir();
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$uploads = apply_filters( 'wpcf7_upload_dir', array(
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'dir' => $uploads['basedir'],
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'url' => $uploads['baseurl'],
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) );
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if ( 'dir' == $type ) {
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return $uploads['dir'];
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} if ( 'url' == $type ) {
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return $uploads['url'];
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}
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return $uploads;
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}
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/**
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* Verifies that a correct security nonce was used with time limit.
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*
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* @param string $nonce Nonce value that was used for verification.
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* @param string $action Optional. Context to what is taking place.
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* Default 'wp_rest'.
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* @return int|bool 1 if the nonce is generated between 0-12 hours ago,
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* 2 if the nonce is generated between 12-24 hours ago.
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* False if the nonce is invalid.
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*/
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function wpcf7_verify_nonce( $nonce, $action = 'wp_rest' ) {
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return wp_verify_nonce( $nonce, $action );
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}
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/**
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* Creates a cryptographic token tied to a specific action, user, user session,
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* and window of time.
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*
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* @param string $action Optional. Context to what is taking place.
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* Default 'wp_rest'.
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* @return string The token.
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*/
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function wpcf7_create_nonce( $action = 'wp_rest' ) {
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return wp_create_nonce( $action );
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}
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/**
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* Converts multi-dimensional array to a flat array.
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*
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* @param mixed $input Array or item of array.
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* @return array Flatten array.
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*/
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function wpcf7_array_flatten( $input ) {
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if ( ! is_array( $input ) ) {
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return array( $input );
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}
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$output = array();
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foreach ( $input as $value ) {
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$output = array_merge( $output, wpcf7_array_flatten( $value ) );
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}
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return $output;
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}
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/**
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* Excludes unset or blank text values from the given array.
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*
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* @param array $input The array.
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* @return array Array without blank text values.
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*/
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function wpcf7_exclude_blank( $input ) {
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$output = array_filter( $input,
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static function ( $i ) {
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return isset( $i ) && '' !== $i;
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}
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);
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return array_values( $output );
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}
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/**
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* Creates a comma-separated list from a multi-dimensional array.
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*
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* @param mixed $input Array or item of array.
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* @param string|array $args Optional. Output options.
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* @return string Comma-separated list.
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*/
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function wpcf7_flat_join( $input, $args = '' ) {
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$args = wp_parse_args( $args, array(
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'separator' => ', ',
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) );
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$input = wpcf7_array_flatten( $input );
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$output = array();
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foreach ( (array) $input as $value ) {
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if ( is_scalar( $value ) ) {
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$output[] = trim( (string) $value );
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}
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}
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return implode( $args['separator'], $output );
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}
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/**
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* Returns true if HTML5 is supported.
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*/
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function wpcf7_support_html5() {
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return (bool) wpcf7_apply_filters_deprecated(
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'wpcf7_support_html5',
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array( true ),
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'5.6',
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''
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);
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}
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/**
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* Returns true if HTML5 fallback is active.
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*/
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function wpcf7_support_html5_fallback() {
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return (bool) apply_filters( 'wpcf7_support_html5_fallback', false );
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}
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/**
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* Returns true if the Really Simple CAPTCHA plugin is used for contact forms.
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*/
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function wpcf7_use_really_simple_captcha() {
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return apply_filters( 'wpcf7_use_really_simple_captcha',
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WPCF7_USE_REALLY_SIMPLE_CAPTCHA
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);
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}
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/**
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* Returns true if config validation is active.
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*/
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function wpcf7_validate_configuration() {
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return apply_filters( 'wpcf7_validate_configuration',
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WPCF7_VALIDATE_CONFIGURATION
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);
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}
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/**
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* Returns true if wpcf7_autop() is applied.
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*/
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function wpcf7_autop_or_not( $options = '' ) {
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$options = wp_parse_args( $options, array(
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'for' => 'form',
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) );
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return (bool) apply_filters( 'wpcf7_autop_or_not', WPCF7_AUTOP, $options );
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}
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/**
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* Returns true if JavaScript for this plugin is loaded.
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*/
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function wpcf7_load_js() {
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return apply_filters( 'wpcf7_load_js', WPCF7_LOAD_JS );
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}
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/**
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* Returns true if CSS for this plugin is loaded.
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*/
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function wpcf7_load_css() {
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return apply_filters( 'wpcf7_load_css', WPCF7_LOAD_CSS );
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}
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/**
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* Builds an HTML anchor element.
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*
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* @param string $url Link URL.
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* @param string $anchor_text Anchor label text.
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* @param string|array $args Optional. Link options.
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* @return string Formatted anchor element.
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*/
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function wpcf7_link( $url, $anchor_text, $args = '' ) {
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$args = wp_parse_args( $args, array(
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'id' => null,
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'class' => null,
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) );
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$atts = array_merge( $args, array(
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'href' => esc_url( $url ),
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) );
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return sprintf(
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'<a %1$s>%2$s</a>',
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wpcf7_format_atts( $atts ),
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esc_html( $anchor_text )
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);
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}
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/**
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* Returns the current request URL.
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*/
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function wpcf7_get_request_uri() {
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static $request_uri = '';
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if ( empty( $request_uri ) ) {
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$request_uri = add_query_arg( array() );
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}
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return sanitize_url( $request_uri );
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}
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/**
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* Registers post types used for this plugin.
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*/
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function wpcf7_register_post_types() {
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if ( class_exists( 'WPCF7_ContactForm' ) ) {
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WPCF7_ContactForm::register_post_type();
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return true;
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} else {
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return false;
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}
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}
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/**
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* Returns the version string of this plugin.
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*
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* @param string|array $args Optional. Output options.
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* @return string Version string.
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*/
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function wpcf7_version( $args = '' ) {
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$defaults = array(
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'limit' => -1,
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'only_major' => false,
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);
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$args = wp_parse_args( $args, $defaults );
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if ( $args['only_major'] ) {
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$args['limit'] = 2;
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}
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$args['limit'] = (int) $args['limit'];
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$ver = WPCF7_VERSION;
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$ver = strtr( $ver, '_-+', '...' );
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$ver = preg_replace( '/[^0-9.]+/', ".$0.", $ver );
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$ver = preg_replace( '/[.]+/', ".", $ver );
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$ver = trim( $ver, '.' );
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$ver = explode( '.', $ver );
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if ( -1 < $args['limit'] ) {
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$ver = array_slice( $ver, 0, $args['limit'] );
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}
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$ver = implode( '.', $ver );
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return $ver;
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}
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/**
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* Returns array entries that match the given version.
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*
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* @param string $version The version to search for.
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* @param array $input Search target array.
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* @return array|bool Array of matched entries. False on failure.
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*/
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function wpcf7_version_grep( $version, array $input ) {
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$pattern = '/^' . preg_quote( (string) $version, '/' ) . '(?:\.|$)/';
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return preg_grep( $pattern, $input );
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}
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/**
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* Returns an enctype attribute value.
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*
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* @param string $enctype Enctype value.
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* @return string Enctype value. Empty if not a valid enctype.
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*/
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function wpcf7_enctype_value( $enctype ) {
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$enctype = trim( $enctype );
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if ( empty( $enctype ) ) {
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return '';
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}
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$valid_enctypes = array(
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'application/x-www-form-urlencoded',
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'multipart/form-data',
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'text/plain',
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);
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if ( in_array( $enctype, $valid_enctypes ) ) {
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return $enctype;
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}
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$pattern = '%^enctype="(' . implode( '|', $valid_enctypes ) . ')"$%';
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if ( preg_match( $pattern, $enctype, $matches ) ) {
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return $matches[1]; // for back-compat
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}
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return '';
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}
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/**
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* Removes directory recursively.
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*
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* @param string $dir Directory path.
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* @return bool True on success, false on failure.
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*/
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function wpcf7_rmdir_p( $dir ) {
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if ( is_file( $dir ) ) {
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$file = $dir;
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if ( @unlink( $file ) ) {
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return true;
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}
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$stat = stat( $file );
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if ( @chmod( $file, $stat['mode'] | 0200 ) ) { // add write for owner
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if ( @unlink( $file ) ) {
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return true;
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}
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@chmod( $file, $stat['mode'] );
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}
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return false;
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}
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if ( ! is_dir( $dir ) ) {
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return false;
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}
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if ( $handle = opendir( $dir ) ) {
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while ( false !== ( $file = readdir( $handle ) ) ) {
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if ( $file == "."
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or $file == ".." ) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
wpcf7_rmdir_p( path_join( $dir, $file ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
closedir( $handle );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( false !== ( $files = scandir( $dir ) )
|
||
|
|
and ! array_diff( $files, array( '.', '..' ) ) ) {
|
||
|
|
return rmdir( $dir );
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Builds a URL-encoded query string.
|
||
|
|
*
|
||
|
|
* @link https://developer.wordpress.org/reference/functions/_http_build_query/
|
||
|
|
*
|
||
|
|
* @param array $args URL query parameters.
|
||
|
|
* @param string $key Optional. If specified, used to prefix key name.
|
||
|
|
* @return string Query string.
|
||
|
|
*/
|
||
|
|
function wpcf7_build_query( $args, $key = '' ) {
|
||
|
|
$sep = '&';
|
||
|
|
$ret = array();
|
||
|
|
|
||
|
|
foreach ( (array) $args as $k => $v ) {
|
||
|
|
$k = urlencode( $k );
|
||
|
|
|
||
|
|
if ( ! empty( $key ) ) {
|
||
|
|
$k = $key . '%5B' . $k . '%5D';
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( null === $v ) {
|
||
|
|
continue;
|
||
|
|
} elseif ( false === $v ) {
|
||
|
|
$v = '0';
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( is_array( $v ) or is_object( $v ) ) {
|
||
|
|
array_push( $ret, wpcf7_build_query( $v, $k ) );
|
||
|
|
} else {
|
||
|
|
array_push( $ret, $k . '=' . urlencode( $v ) );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return implode( $sep, $ret );
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the number of code units in a string.
|
||
|
|
*
|
||
|
|
* @link http://www.w3.org/TR/html5/infrastructure.html#code-unit-length
|
||
|
|
*
|
||
|
|
* @param string $text Input string.
|
||
|
|
* @return int|bool The number of code units, or false if
|
||
|
|
* mb_convert_encoding is not available.
|
||
|
|
*/
|
||
|
|
function wpcf7_count_code_units( $text ) {
|
||
|
|
static $use_mb = null;
|
||
|
|
|
||
|
|
if ( is_null( $use_mb ) ) {
|
||
|
|
$use_mb = function_exists( 'mb_convert_encoding' );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( ! $use_mb ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$text = (string) $text;
|
||
|
|
$text = str_replace( "\r\n", "\n", $text );
|
||
|
|
|
||
|
|
$encoding = mb_detect_encoding( $text, mb_detect_order(), true );
|
||
|
|
|
||
|
|
if ( $encoding ) {
|
||
|
|
$text = mb_convert_encoding( $text, 'UTF-16', $encoding );
|
||
|
|
} else {
|
||
|
|
$text = mb_convert_encoding( $text, 'UTF-16', 'UTF-8' );
|
||
|
|
}
|
||
|
|
|
||
|
|
$byte_count = mb_strlen( $text, '8bit' );
|
||
|
|
|
||
|
|
return floor( $byte_count / 2 );
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns true if WordPress is running on the localhost.
|
||
|
|
*/
|
||
|
|
function wpcf7_is_localhost() {
|
||
|
|
$sitename = wp_parse_url( network_home_url(), PHP_URL_HOST );
|
||
|
|
return in_array( strtolower( $sitename ), array( 'localhost', '127.0.0.1' ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Marks a function as deprecated and informs when it has been used.
|
||
|
|
*
|
||
|
|
* @param string $function_name The function that was called.
|
||
|
|
* @param string $version The version of Contact Form 7 that deprecated
|
||
|
|
* the function.
|
||
|
|
* @param string $replacement The function that should have been called.
|
||
|
|
*/
|
||
|
|
function wpcf7_deprecated_function( $function_name, $version, $replacement ) {
|
||
|
|
if ( WP_DEBUG ) {
|
||
|
|
if ( function_exists( '__' ) ) {
|
||
|
|
trigger_error(
|
||
|
|
sprintf(
|
||
|
|
/* translators: 1: PHP function name, 2: version number, 3: alternative function name */
|
||
|
|
__( 'Function %1$s is <strong>deprecated</strong> since Contact Form 7 version %2$s! Use %3$s instead.', 'contact-form-7' ),
|
||
|
|
$function_name, $version, $replacement
|
||
|
|
),
|
||
|
|
E_USER_DEPRECATED
|
||
|
|
);
|
||
|
|
} else {
|
||
|
|
trigger_error(
|
||
|
|
sprintf(
|
||
|
|
'Function %1$s is <strong>deprecated</strong> since Contact Form 7 version %2$s! Use %3$s instead.',
|
||
|
|
$function_name, $version, $replacement
|
||
|
|
),
|
||
|
|
E_USER_DEPRECATED
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Fires functions attached to a deprecated filter hook.
|
||
|
|
*
|
||
|
|
* @param string $hook_name The name of the filter hook.
|
||
|
|
* @param array $args Array of additional function arguments to be
|
||
|
|
* passed to apply_filters().
|
||
|
|
* @param string $version The version of Contact Form 7 that deprecated
|
||
|
|
* the hook.
|
||
|
|
* @param string $replacement The hook that should have been used.
|
||
|
|
*/
|
||
|
|
function wpcf7_apply_filters_deprecated( $hook_name, $args, $version, $replacement = '' ) {
|
||
|
|
if ( ! has_filter( $hook_name ) ) {
|
||
|
|
return $args[0];
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( WP_DEBUG and apply_filters( 'deprecated_hook_trigger_error', true ) ) {
|
||
|
|
if ( $replacement ) {
|
||
|
|
trigger_error(
|
||
|
|
sprintf(
|
||
|
|
/* translators: 1: WordPress hook name, 2: version number, 3: alternative hook name */
|
||
|
|
__( 'Hook %1$s is <strong>deprecated</strong> since Contact Form 7 version %2$s! Use %3$s instead.', 'contact-form-7' ),
|
||
|
|
$hook_name,
|
||
|
|
$version,
|
||
|
|
$replacement
|
||
|
|
),
|
||
|
|
E_USER_DEPRECATED
|
||
|
|
);
|
||
|
|
} else {
|
||
|
|
trigger_error(
|
||
|
|
sprintf(
|
||
|
|
/* translators: 1: WordPress hook name, 2: version number */
|
||
|
|
__( 'Hook %1$s is <strong>deprecated</strong> since Contact Form 7 version %2$s with no alternative available.', 'contact-form-7' ),
|
||
|
|
$hook_name,
|
||
|
|
$version
|
||
|
|
),
|
||
|
|
E_USER_DEPRECATED
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return apply_filters_ref_array( $hook_name, $args );
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Marks something as being incorrectly called.
|
||
|
|
*
|
||
|
|
* @param string $function_name The function that was called.
|
||
|
|
* @param string $message A message explaining what has been done incorrectly.
|
||
|
|
* @param string $version The version of Contact Form 7 where the message
|
||
|
|
* was added.
|
||
|
|
*/
|
||
|
|
function wpcf7_doing_it_wrong( $function_name, $message, $version ) {
|
||
|
|
if ( WP_DEBUG ) {
|
||
|
|
if ( function_exists( '__' ) ) {
|
||
|
|
if ( $version ) {
|
||
|
|
$version = sprintf(
|
||
|
|
/* translators: %s: Contact Form 7 version number. */
|
||
|
|
__( '(This message was added in Contact Form 7 version %s.)', 'contact-form-7' ),
|
||
|
|
$version
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
trigger_error(
|
||
|
|
sprintf(
|
||
|
|
/* translators: Developer debugging message. 1: PHP function name, 2: Explanatory message, 3: Contact Form 7 version number. */
|
||
|
|
__( 'Function %1$s was called incorrectly. %2$s %3$s', 'contact-form-7' ),
|
||
|
|
$function_name,
|
||
|
|
$message,
|
||
|
|
$version
|
||
|
|
),
|
||
|
|
E_USER_NOTICE
|
||
|
|
);
|
||
|
|
} else {
|
||
|
|
if ( $version ) {
|
||
|
|
$version = sprintf(
|
||
|
|
'(This message was added in Contact Form 7 version %s.)',
|
||
|
|
$version
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
trigger_error(
|
||
|
|
sprintf(
|
||
|
|
'Function %1$s was called incorrectly. %2$s %3$s',
|
||
|
|
$function_name,
|
||
|
|
$message,
|
||
|
|
$version
|
||
|
|
),
|
||
|
|
E_USER_NOTICE
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Triggers an error about a remote HTTP request and response.
|
||
|
|
*
|
||
|
|
* @param string $url The resource URL.
|
||
|
|
* @param array $request Request arguments.
|
||
|
|
* @param array|WP_Error $response The response or WP_Error on failure.
|
||
|
|
*/
|
||
|
|
function wpcf7_log_remote_request( $url, $request, $response ) {
|
||
|
|
$log = sprintf(
|
||
|
|
/* translators: 1: response code, 2: message, 3: body, 4: URL */
|
||
|
|
__( 'HTTP Response: %1$s %2$s %3$s from %4$s', 'contact-form-7' ),
|
||
|
|
(int) wp_remote_retrieve_response_code( $response ),
|
||
|
|
wp_remote_retrieve_response_message( $response ),
|
||
|
|
wp_remote_retrieve_body( $response ),
|
||
|
|
$url
|
||
|
|
);
|
||
|
|
|
||
|
|
$log = apply_filters( 'wpcf7_log_remote_request',
|
||
|
|
$log, $url, $request, $response
|
||
|
|
);
|
||
|
|
|
||
|
|
if ( $log ) {
|
||
|
|
trigger_error( $log );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Anonymizes an IP address by masking local part.
|
||
|
|
*
|
||
|
|
* @param string $ip_addr The original IP address.
|
||
|
|
* @return string|bool Anonymized IP address, or false on failure.
|
||
|
|
*/
|
||
|
|
function wpcf7_anonymize_ip_addr( $ip_addr ) {
|
||
|
|
if ( ! function_exists( 'inet_ntop' )
|
||
|
|
or ! function_exists( 'inet_pton' ) ) {
|
||
|
|
return $ip_addr;
|
||
|
|
}
|
||
|
|
|
||
|
|
$packed = inet_pton( $ip_addr );
|
||
|
|
|
||
|
|
if ( false === $packed ) {
|
||
|
|
return $ip_addr;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( 4 == strlen( $packed ) ) { // IPv4
|
||
|
|
$mask = '255.255.255.0';
|
||
|
|
} elseif ( 16 == strlen( $packed ) ) { // IPv6
|
||
|
|
$mask = 'ffff:ffff:ffff:0000:0000:0000:0000:0000';
|
||
|
|
} else {
|
||
|
|
return $ip_addr;
|
||
|
|
}
|
||
|
|
|
||
|
|
return inet_ntop( $packed & inet_pton( $mask ) );
|
||
|
|
}
|