rebase from live enviornment

wp/plugins/contact-form-7/modules/disallowed-list.php

@@ -0,0 +1,90 @@
+<?php
+
+add_filter( 'wpcf7_spam', 'wpcf7_disallowed_list', 10, 2 );
+
+function wpcf7_disallowed_list( $spam, $submission ) {
+	if ( $spam ) {
+		return $spam;
+	}
+
+	$target = wpcf7_array_flatten( $submission->get_posted_data() );
+	$target[] = $submission->get_meta( 'remote_ip' );
+	$target[] = $submission->get_meta( 'user_agent' );
+	$target = implode( "\n", $target );
+
+	$word = wpcf7_check_disallowed_list( $target );
+
+	$word = wpcf7_apply_filters_deprecated(
+		'wpcf7_submission_is_blacklisted',
+		array( $word, $submission ),
+		'5.3',
+		'wpcf7_submission_has_disallowed_words'
+	);
+
+	$word = apply_filters(
+		'wpcf7_submission_has_disallowed_words',
+		$word,
+		$submission
+	);
+
+	if ( $word ) {
+		if ( is_bool( $word ) ) {
+			$reason = __( "Disallowed words are used.", 'contact-form-7' );
+		} else {
+			$reason = sprintf(
+				__( "Disallowed words (%s) are used.", 'contact-form-7' ),
+				implode( ', ', (array) $word )
+			);
+		}
+
+		$submission->add_spam_log( array(
+			'agent' => 'disallowed_list',
+			'reason' => $reason,
+		) );
+	}
+
+	$spam = (bool) $word;
+
+	return $spam;
+}
+
+function wpcf7_check_disallowed_list( $target ) {
+	$mod_keys = get_option( 'disallowed_keys' );
+
+	if ( is_scalar( $mod_keys ) ) {
+		$mod_keys = trim( $mod_keys );
+	} else {
+		$mod_keys = '';
+	}
+
+	if ( '' === $mod_keys ) {
+		return false;
+	}
+
+	foreach ( explode( "\n", $mod_keys ) as $word ) {
+		$word = trim( $word );
+		$length = strlen( $word );
+
+		if ( $length < 2 or 256 < $length ) {
+			continue;
+		}
+
+		$pattern = sprintf( '#%s#i', preg_quote( $word, '#' ) );
+
+		if ( preg_match( $pattern, $target ) ) {
+			return $word;
+		}
+	}
+
+	return false;
+}
+
+function wpcf7_blacklist_check( $target ) {
+	wpcf7_deprecated_function(
+		__FUNCTION__,
+		'5.3',
+		'wpcf7_check_disallowed_list'
+	);
+
+	return wpcf7_check_disallowed_list( $target );
+}