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✏️ Editing: submission.php

<?php

class WPCF7_Submission {

private static $instance;

private $contact_form;
	private $status = 'init';
	private $posted_data = array();
	private $posted_data_hash = null;
	private $skip_spam_check = false;
	private $uploaded_files = array();
	private $skip_mail = false;
	private $response = '';
	private $invalid_fields = array();
	private $meta = array();
	private $consent = array();
	private $spam_log = array();

public static function get_instance( $contact_form = null, $args = '' ) {
		if ( $contact_form instanceof WPCF7_ContactForm ) {
			if ( empty( self::$instance ) ) {
				self::$instance = new self( $contact_form, $args );
				self::$instance->proceed();
				return self::$instance;
			} else {
				return null;
			}
		} else {
			if ( empty( self::$instance ) ) {
				return null;
			} else {
				return self::$instance;
			}
		}
	}

public static function is_restful() {
		return defined( 'REST_REQUEST' ) && REST_REQUEST;
	}

private function __construct( WPCF7_ContactForm $contact_form, $args = '' ) {
		$args = wp_parse_args( $args, array(
			'skip_mail' => false,
		) );

$this->contact_form = $contact_form;
		$this->skip_mail = (bool) $args['skip_mail'];
	}

private function proceed() {
		$contact_form = $this->contact_form;

switch_to_locale( $contact_form->locale() );

$this->setup_meta_data();
		$this->setup_posted_data();

if ( $this->is( 'init' ) and ! $this->validate() ) {
			$this->set_status( 'validation_failed' );
			$this->set_response( $contact_form->message( 'validation_error' ) );
		}

if ( $this->is( 'init' ) and ! $this->accepted() ) {
			$this->set_status( 'acceptance_missing' );
			$this->set_response( $contact_form->message( 'accept_terms' ) );
		}

if ( $this->is( 'init' ) and $this->spam() ) {
			$this->set_status( 'spam' );
			$this->set_response( $contact_form->message( 'spam' ) );
		}

if ( $this->is( 'init' ) ) {
			$abort = ! $this->before_send_mail();

if ( $abort ) {
				if ( $this->is( 'init' ) ) {
					$this->set_status( 'aborted' );
				}

if ( '' === $this->get_response() ) {
					$this->set_response( $contact_form->filter_message(
						__( "Sending mail has been aborted.", 'contact-form-7' ) )
					);
				}
			} elseif ( $this->mail() ) {
				$this->set_status( 'mail_sent' );
				$this->set_response( $contact_form->message( 'mail_sent_ok' ) );

do_action( 'wpcf7_mail_sent', $contact_form );
			} else {
				$this->set_status( 'mail_failed' );
				$this->set_response( $contact_form->message( 'mail_sent_ng' ) );

do_action( 'wpcf7_mail_failed', $contact_form );
			}
		}

restore_previous_locale();

$this->remove_uploaded_files();
	}

public function get_status() {
		return $this->status;
	}

public function set_status( $status ) {
		if ( preg_match( '/^[a-z][0-9a-z_]+$/', $status ) ) {
			$this->status = $status;
			return true;
		}

return false;
	}

public function is( $status ) {
		return $this->status == $status;
	}

public function get_response() {
		return $this->response;
	}

public function set_response( $response ) {
		$this->response = $response;
		return true;
	}

public function get_contact_form() {
		return $this->contact_form;
	}

public function get_invalid_field( $name ) {
		if ( isset( $this->invalid_fields[$name] ) ) {
			return $this->invalid_fields[$name];
		} else {
			return false;
		}
	}

public function get_invalid_fields() {
		return $this->invalid_fields;
	}

public function get_meta( $name ) {
		if ( isset( $this->meta[$name] ) ) {
			return $this->meta[$name];
		}
	}

private function setup_meta_data() {
		$timestamp = time();

$remote_ip = $this->get_remote_ip_addr();

$remote_port = isset( $_SERVER['REMOTE_PORT'] )
			? (int) $_SERVER['REMOTE_PORT'] : '';

$user_agent = isset( $_SERVER['HTTP_USER_AGENT'] )
			? substr( $_SERVER['HTTP_USER_AGENT'], 0, 254 ) : '';

$url = $this->get_request_url();

$unit_tag = isset( $_POST['_wpcf7_unit_tag'] )
			? $_POST['_wpcf7_unit_tag'] : '';

$container_post_id = isset( $_POST['_wpcf7_container_post'] )
			? (int) $_POST['_wpcf7_container_post'] : 0;

$current_user_id = get_current_user_id();

$do_not_store = $this->contact_form->is_true( 'do_not_store' );

$this->meta = array(
			'timestamp' => $timestamp,
			'remote_ip' => $remote_ip,
			'remote_port' => $remote_port,
			'user_agent' => $user_agent,
			'url' => $url,
			'unit_tag' => $unit_tag,
			'container_post_id' => $container_post_id,
			'current_user_id' => $current_user_id,
			'do_not_store' => $do_not_store,
		);

return $this->meta;
	}

public function get_posted_data( $name = '' ) {
		if ( ! empty( $name ) ) {
			if ( isset( $this->posted_data[$name] ) ) {
				return $this->posted_data[$name];
			} else {
				return null;
			}
		}

return $this->posted_data;
	}

private function setup_posted_data() {
		$posted_data = array_filter( (array) $_POST, function( $key ) {
			return '_' !== substr( $key, 0, 1 );
		}, ARRAY_FILTER_USE_KEY );

$posted_data = wp_unslash( $posted_data );
		$posted_data = $this->sanitize_posted_data( $posted_data );

$tags = $this->contact_form->scan_form_tags();

foreach ( (array) $tags as $tag ) {
			if ( empty( $tag->name ) ) {
				continue;
			}

$type = $tag->type;
			$name = $tag->name;
			$pipes = $tag->pipes;

if ( wpcf7_form_tag_supports( $type, 'do-not-store' ) ) {
				unset( $posted_data[$name] );
				continue;
			}

$value_orig = $value = '';

if ( isset( $posted_data[$name] ) ) {
				$value_orig = $value = $posted_data[$name];
			}

if ( WPCF7_USE_PIPE
			and $pipes instanceof WPCF7_Pipes
			and ! $pipes->zero() ) {
				if ( is_array( $value_orig ) ) {
					$value = array();

foreach ( $value_orig as $v ) {
						$value[] = $pipes->do_pipe( $v );
					}
				} else {
					$value = $pipes->do_pipe( $value_orig );
				}
			}

if ( wpcf7_form_tag_supports( $type, 'selectable-values' ) ) {
				$value = (array) $value;

if ( $tag->has_option( 'free_text' )
				and isset( $posted_data[$name . '_free_text'] ) ) {
					$last_val = array_pop( $value );

list( $tied_item ) = array_slice(
						WPCF7_USE_PIPE ? $tag->pipes->collect_afters() : $tag->values,
						-1, 1
					);

$tied_item = html_entity_decode( $tied_item, ENT_QUOTES, 'UTF-8' );

if ( $last_val === $tied_item ) {
						$value[] = sprintf( '%s %s',
							$last_val,
							$posted_data[$name . '_free_text']
						);
					} else {
						$value[] = $last_val;
					}

unset( $posted_data[$name . '_free_text'] );
				}
			}

$value = apply_filters( "wpcf7_posted_data_{$type}", $value,
				$value_orig, $tag );

$posted_data[$name] = $value;

if ( $tag->has_option( 'consent_for:storage' )
			and empty( $posted_data[$name] ) ) {
				$this->meta['do_not_store'] = true;
			}
		}

$this->posted_data = apply_filters( 'wpcf7_posted_data', $posted_data );

$this->posted_data_hash = wp_hash(
			wpcf7_flat_join( array_merge(
				array(
					$this->get_meta( 'remote_ip' ),
					$this->get_meta( 'remote_port' ),
					$this->get_meta( 'unit_tag' ),
				),
				$this->posted_data
			) ),
			'wpcf7_submission'
		);

return $this->posted_data;
	}

private function sanitize_posted_data( $value ) {
		if ( is_array( $value ) ) {
			$value = array_map( array( $this, 'sanitize_posted_data' ), $value );
		} elseif ( is_string( $value ) ) {
			$value = wp_check_invalid_utf8( $value );
			$value = wp_kses_no_null( $value );
		}

return $value;
	}

public function get_posted_data_hash() {
		return $this->posted_data_hash;
	}

private function get_remote_ip_addr() {
		$ip_addr = '';

if ( isset( $_SERVER['REMOTE_ADDR'] )
		and WP_Http::is_ip_address( $_SERVER['REMOTE_ADDR'] ) ) {
			$ip_addr = $_SERVER['REMOTE_ADDR'];
		}

return apply_filters( 'wpcf7_remote_ip_addr', $ip_addr );
	}

private function get_request_url() {
		$home_url = untrailingslashit( home_url() );

if ( self::is_restful() ) {
			$referer = isset( $_SERVER['HTTP_REFERER'] )
				? trim( $_SERVER['HTTP_REFERER'] ) : '';

if ( $referer
			and 0 === strpos( $referer, $home_url ) ) {
				return esc_url_raw( $referer );
			}
		}

$url = preg_replace( '%(?<!:|/)/.*$%', '', $home_url )
			. wpcf7_get_request_uri();

return $url;
	}

private function validate() {
		if ( $this->invalid_fields ) {
			return false;
		}

require_once WPCF7_PLUGIN_DIR . '/includes/validation.php';
		$result = new WPCF7_Validation();

$tags = $this->contact_form->scan_form_tags();

foreach ( $tags as $tag ) {
			$type = $tag->type;
			$result = apply_filters( "wpcf7_validate_{$type}", $result, $tag );
		}

$result = apply_filters( 'wpcf7_validate', $result, $tags );

$this->invalid_fields = $result->get_invalid_fields();

return $result->is_valid();
	}

private function accepted() {
		return apply_filters( 'wpcf7_acceptance', true, $this );
	}

public function add_consent( $name, $conditions ) {
		$this->consent[$name] = $conditions;
		return true;
	}

public function collect_consent() {
		return (array) $this->consent;
	}

private function spam() {
		$spam = false;

$skip_spam_check = apply_filters( 'wpcf7_skip_spam_check',
			$this->skip_spam_check,
			$this
		);

if ( $skip_spam_check ) {
			return $spam;
		}

if ( $this->contact_form->is_true( 'subscribers_only' )
		and current_user_can( 'wpcf7_submit', $this->contact_form->id() ) ) {
			return $spam;
		}

$user_agent = (string) $this->get_meta( 'user_agent' );

if ( strlen( $user_agent ) < 2 ) {
			$spam = true;

$this->add_spam_log( array(
				'agent' => 'wpcf7',
				'reason' => __( "User-Agent string is unnaturally short.", 'contact-form-7' ),
			) );
		}

if ( ! $this->verify_nonce() ) {
			$spam = true;

$this->add_spam_log( array(
				'agent' => 'wpcf7',
				'reason' => __( "Submitted nonce is invalid.", 'contact-form-7' ),
			) );
		}

return apply_filters( 'wpcf7_spam', $spam, $this );
	}

public function add_spam_log( $args = '' ) {
		$args = wp_parse_args( $args, array(
			'agent' => '',
			'reason' => '',
		) );

$this->spam_log[] = $args;
	}

public function get_spam_log() {
		return $this->spam_log;
	}

private function verify_nonce() {
		if ( ! $this->contact_form->nonce_is_active() ) {
			return true;
		}

return wpcf7_verify_nonce( $_POST['_wpnonce'] );
	}

/* Mail */

private function before_send_mail() {
		$abort = false;

do_action_ref_array( 'wpcf7_before_send_mail', array(
			$this->contact_form,
			&$abort,
			$this,
		) );

return ! $abort;
	}

private function mail() {
		$contact_form = $this->contact_form;

$skip_mail = apply_filters( 'wpcf7_skip_mail',
			$this->skip_mail, $contact_form
		);

if ( $skip_mail ) {
			return true;
		}

$result = WPCF7_Mail::send( $contact_form->prop( 'mail' ), 'mail' );

if ( $result ) {
			$additional_mail = array();

if ( $mail_2 = $contact_form->prop( 'mail_2' )
			and $mail_2['active'] ) {
				$additional_mail['mail_2'] = $mail_2;
			}

$additional_mail = apply_filters( 'wpcf7_additional_mail',
				$additional_mail, $contact_form
			);

foreach ( $additional_mail as $name => $template ) {
				WPCF7_Mail::send( $template, $name );
			}

return true;
		}

return false;
	}

public function uploaded_files() {
		return $this->uploaded_files;
	}

public function add_uploaded_file( $name, $file_path ) {
		if ( ! wpcf7_is_name( $name ) ) {
			return false;
		}

if ( ! @is_file( $file_path ) or ! @is_readable( $file_path ) ) {
			return false;
		}

$this->uploaded_files[$name] = $file_path;

if ( empty( $this->posted_data[$name] ) ) {
			$this->posted_data[$name] = md5_file( $file_path );
		}
	}

public function remove_uploaded_files() {
		foreach ( (array) $this->uploaded_files as $name => $path ) {
			wpcf7_rmdir_p( $path );

if ( $dir = dirname( $path )
			and false !== ( $files = scandir( $dir ) )
			and ! array_diff( $files, array( '.', '..' ) ) ) {
				// remove parent dir if it's empty.
				rmdir( $dir );
			}
		}
	}
}

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