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/**

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* Returns true if WordPress is running on the localhost.

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function wpcf7_is_localhost() {

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$sitename = wp_parse_url( network_home_url(), PHP_URL_HOST );

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return in_array( strtolower( $sitename ), array( 'localhost', '127.0.0.1' ) );

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}

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/**

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* Marks a function as deprecated and informs when it has been used.

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* @param string $function_name The function that was called.

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* @param string $version The version of Contact Form 7 that deprecated

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* the function.

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* @param string $replacement The function that should have been called.

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function wpcf7_deprecated_function( $function_name, $version, $replacement ) {

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if ( WP_DEBUG ) {

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if ( function_exists( '__' ) ) {

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trigger_error(

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sprintf(

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/* translators: 1: PHP function name, 2: version number, 3: alternative function name */

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__( 'Function %1$s is deprecated since Contact Form 7 version %2$s! Use %3$s instead.', 'contact-form-7' ),

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$function_name, $version, $replacement

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E_USER_DEPRECATED

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);

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} else {

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trigger_error(

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sprintf(

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'Function %1$s is deprecated since Contact Form 7 version %2$s! Use %3$s instead.',

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$function_name, $version, $replacement

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E_USER_DEPRECATED

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);

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}

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}

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}

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/**

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* Fires functions attached to a deprecated filter hook.

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* @param string $hook_name The name of the filter hook.

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* @param array $args Array of additional function arguments to be

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* passed to apply_filters().

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* @param string $version The version of Contact Form 7 that deprecated

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* the hook.

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* @param string $replacement The hook that should have been used.

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function wpcf7_apply_filters_deprecated( $hook_name, $args, $version, $replacement = '' ) {

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if ( ! has_filter( $hook_name ) ) {

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return $args[0];

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}

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if ( WP_DEBUG and apply_filters( 'deprecated_hook_trigger_error', true ) ) {

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if ( $replacement ) {

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trigger_error(

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sprintf(

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/* translators: 1: WordPress hook name, 2: version number, 3: alternative hook name */

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__( 'Hook %1$s is deprecated since Contact Form 7 version %2$s! Use %3$s instead.', 'contact-form-7' ),

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$hook_name,

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$version,

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$replacement

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E_USER_DEPRECATED

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);

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} else {

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trigger_error(

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sprintf(

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/* translators: 1: WordPress hook name, 2: version number */

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__( 'Hook %1$s is deprecated since Contact Form 7 version %2$s with no alternative available.', 'contact-form-7' ),

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$hook_name,

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$version

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E_USER_DEPRECATED

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);

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}

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}

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return apply_filters_ref_array( $hook_name, $args );

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}

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/**

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* Marks something as being incorrectly called.

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* @param string $function_name The function that was called.

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* @param string $message A message explaining what has been done incorrectly.

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* @param string $version The version of Contact Form 7 where the message

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* was added.

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function wpcf7_doing_it_wrong( $function_name, $message, $version ) {

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if ( WP_DEBUG ) {

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if ( function_exists( '__' ) ) {

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if ( $version ) {

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$version = sprintf(

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/* translators: %s: Contact Form 7 version number. */

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__( '(This message was added in Contact Form 7 version %s.)', 'contact-form-7' ),

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$version

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);

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}

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trigger_error(

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sprintf(

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/* translators: Developer debugging message. 1: PHP function name, 2: Explanatory message, 3: Contact Form 7 version number. */

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__( 'Function %1$s was called incorrectly. %2$s %3$s', 'contact-form-7' ),

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$function_name,

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$message,

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$version

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E_USER_NOTICE

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);

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} else {

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if ( $version ) {

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$version = sprintf(

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'(This message was added in Contact Form 7 version %s.)',

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$version

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);

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}

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trigger_error(

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sprintf(

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'Function %1$s was called incorrectly. %2$s %3$s',

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$function_name,

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$message,

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$version

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E_USER_NOTICE

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);

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}

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}

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}

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/**

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* Triggers an error about a remote HTTP request and response.

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* @param string $url The resource URL.

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* @param array $request Request arguments.

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* @param array|WP_Error $response The response or WP_Error on failure.

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function wpcf7_log_remote_request( $url, $request, $response ) {

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$log = sprintf(

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/* translators: 1: response code, 2: message, 3: body, 4: URL */

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__( 'HTTP Response: %1$s %2$s %3$s from %4$s', 'contact-form-7' ),

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(int) wp_remote_retrieve_response_code( $response ),

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wp_remote_retrieve_response_message( $response ),

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wp_remote_retrieve_body( $response ),

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$url

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);

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$log = apply_filters( 'wpcf7_log_remote_request',

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$log, $url, $request, $response

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);

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if ( $log ) {

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trigger_error( $log );

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}

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}

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/**

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* Anonymizes an IP address by masking local part.

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* @param string $ip_addr The original IP address.

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* @return string|bool Anonymized IP address, or false on failure.

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function wpcf7_anonymize_ip_addr( $ip_addr ) {

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if ( ! function_exists( 'inet_ntop' )

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or ! function_exists( 'inet_pton' ) ) {

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return $ip_addr;

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}

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$packed = inet_pton( $ip_addr );

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if ( false === $packed ) {

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return $ip_addr;

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}

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if ( 4 == strlen( $packed ) ) { // IPv4

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$mask = '255.255.255.0';

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} elseif ( 16 == strlen( $packed ) ) { // IPv6

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$mask = 'ffff:ffff:ffff:0000:0000:0000:0000:0000';

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} else {

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return $ip_addr;

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}

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return inet_ntop( $packed & inet_pton( $mask ) );

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}

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