FM / akismet

/home/techb158/primomovers.ca/cgi-bin/wordpress/wp-content/plugins/akismet/

/home/techb158/primomovers.ca/cgi-bin/wordpress/wp-content/plugins/akismet

Name	Size	Mode	Actions
views/	-	0755	rm
_inc/	-	0755	rm
.htaccess	786	0644	edit dl rm
akismet.php	2757	0644	edit dl rm
changelog.txt	23379	0644	edit dl rm
class-akismet-compatible-plugins.php	8022	0644	edit dl rm
class.akismet-admin.php	65241	0644	edit dl rm
class.akismet-cli.php	5009	0644	edit dl rm
class.akismet-rest-api.php	20188	0644	edit dl rm
class.akismet-widget.php	4494	0644	edit dl rm
class.akismet.php	84419	0644	edit dl rm
index.php	58	0644	edit dl rm
LICENSE.txt	18092	0644	edit dl rm
readme.txt	6106	0644	edit dl rm
wrapper.php	6434	0644	edit dl rm

Edit: /home/techb158/primomovers.ca/cgi-bin/wordpress/wp-content/plugins/akismet/class.akismet.php (84419B)

<?php

// We plan to gradually remove all of the disabled lint rules below.
// phpcs:disable WordPress.Security.ValidatedSanitizedInput.MissingUnslash
// phpcs:disable WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
// phpcs:disable WordPress.Security.NonceVerification.Missing
// phpcs:disable Squiz.PHP.DisallowMultipleAssignments.FoundInControlStructure

class Akismet {
	const API_HOST                          = 'rest.akismet.com';
	const API_PORT                          = 80;
	const MAX_DELAY_BEFORE_MODERATION_EMAIL = 86400; // One day in seconds
	const ALERT_CODE_COMMERCIAL             = 30001;

// User account status constants
	const USER_STATUS_ACTIVE    = 'active';
	const USER_STATUS_NO_SUB    = 'no-sub';
	const USER_STATUS_MISSING   = 'missing';
	const USER_STATUS_CANCELLED = 'cancelled';
	const USER_STATUS_SUSPENDED = 'suspended';

public static $limit_notices = array(
		10501 => 'FIRST_MONTH_OVER_LIMIT',
		10502 => 'SECOND_MONTH_OVER_LIMIT',
		10504 => 'THIRD_MONTH_APPROACHING_LIMIT',
		10508 => 'THIRD_MONTH_OVER_LIMIT',
		10516 => 'FOUR_PLUS_MONTHS_OVER_LIMIT',
	);

private static $last_comment                                = '';
	private static $initiated                                   = false;
	private static $last_comment_result                         = null;
	private static $comment_as_submitted_allowed_keys           = array(
		'blog'                 => '',
		'blog_charset'         => '',
		'blog_lang'            => '',
		'blog_ua'              => '',
		'comment_agent'        => '',
		'comment_author'       => '',
		'comment_author_IP'    => '',
		'comment_author_email' => '',
		'comment_author_url'   => '',
		'comment_content'      => '',
		'comment_date_gmt'     => '',
		'comment_tags'         => '',
		'comment_type'         => '',
		'guid'                 => '',
		'is_test'              => '',
		'permalink'            => '',
		'reporter'             => '',
		'site_domain'          => '',
		'submit_referer'       => '',
		'submit_uri'           => '',
		'user_ID'              => '',
		'user_agent'           => '',
		'user_id'              => '',
		'user_ip'              => '',
	);

public static function init() {
		if ( ! self::$initiated ) {
			self::init_hooks();
		}
	}

/**
	 * Initializes WordPress hooks
	 */
	private static function init_hooks() {
		self::$initiated = true;

add_action( 'wp_insert_comment', array( 'Akismet', 'auto_check_update_meta' ), 10, 2 );
		add_action( 'wp_insert_comment', array( 'Akismet', 'schedule_email_fallback' ), 10, 2 );
		add_action( 'wp_insert_comment', array( 'Akismet', 'schedule_approval_fallback' ), 10, 2 );

add_filter( 'preprocess_comment', array( 'Akismet', 'auto_check_comment' ), 1 );
		add_filter( 'rest_pre_insert_comment', array( 'Akismet', 'rest_auto_check_comment' ), 1 );

add_action( 'comment_form', array( 'Akismet', 'load_form_js' ) );
		add_action( 'do_shortcode_tag', array( 'Akismet', 'load_form_js_via_filter' ), 10, 4 );

add_action( 'akismet_scheduled_delete', array( 'Akismet', 'delete_old_comments' ) );
		add_action( 'akismet_scheduled_delete', array( 'Akismet', 'delete_old_comments_meta' ) );
		add_action( 'akismet_scheduled_delete', array( 'Akismet', 'delete_orphaned_commentmeta' ) );
		add_action( 'akismet_schedule_cron_recheck', array( 'Akismet', 'cron_recheck' ) );

add_action( 'akismet_email_fallback', array( 'Akismet', 'email_fallback' ), 10, 3 );
		add_action( 'akismet_approval_fallback', array( 'Akismet', 'approval_fallback' ), 10, 3 );

add_action( 'comment_form', array( 'Akismet', 'add_comment_nonce' ), 1 );
		add_action( 'comment_form', array( 'Akismet', 'output_custom_form_fields' ) );
		add_filter( 'script_loader_tag', array( 'Akismet', 'set_form_js_async' ), 10, 3 );

add_filter( 'notify_moderator', array( 'Akismet', 'disable_emails_if_unreachable' ), 1000, 2 );
		add_filter( 'notify_post_author', array( 'Akismet', 'disable_emails_if_unreachable' ), 1000, 2 );

add_filter( 'pre_comment_approved', array( 'Akismet', 'last_comment_status' ), 10, 2 );

add_action( 'transition_comment_status', array( 'Akismet', 'transition_comment_status' ), 10, 3 );

// Run this early in the pingback call, before doing a remote fetch of the source uri
		add_action( 'xmlrpc_call', array( 'Akismet', 'pre_check_pingback' ), 10, 3 );

// Jetpack compatibility
		add_filter( 'jetpack_options_whitelist', array( 'Akismet', 'add_to_jetpack_options_whitelist' ) );
		add_filter( 'jetpack_contact_form_html', array( 'Akismet', 'inject_custom_form_fields' ) );
		add_filter( 'jetpack_contact_form_akismet_values', array( 'Akismet', 'prepare_custom_form_values' ) );

// Gravity Forms
		add_filter( 'gform_get_form_filter', array( 'Akismet', 'inject_custom_form_fields' ) );
		add_filter( 'gform_akismet_fields', array( 'Akismet', 'prepare_custom_form_values' ) );

// Contact Form 7
		add_filter( 'wpcf7_form_elements', array( 'Akismet', 'append_custom_form_fields' ) );
		add_filter( 'wpcf7_akismet_parameters', array( 'Akismet', 'prepare_custom_form_values' ) );

// Formidable Forms
		add_filter( 'frm_filter_final_form', array( 'Akismet', 'inject_custom_form_fields' ) );
		add_filter( 'frm_akismet_values', array( 'Akismet', 'prepare_custom_form_values' ) );

// Fluent Forms
		/*
		 * The Fluent Forms  hook names were updated in version 5.0.0. The last version that supported
		 * the original hook names was 4.3.25, and version 4.3.25 was tested up to WordPress version 6.1.
		 *
		 * The legacy hooks are fired before the new hooks. See
		 * https://github.com/fluentform/fluentform/commit/cc45341afcae400f217470a7bbfb15efdd80454f
		 *
		 * The legacy Fluent Forms hooks will be removed when Akismet no longer supports WordPress version 6.1.
		 * This will provide compatibility with previous versions of Fluent Forms for a reasonable amount of time.
		 */
		add_filter( 'fluentform_form_element_start', array( 'Akismet', 'output_custom_form_fields' ) );
		add_filter( 'fluentform_akismet_fields', array( 'Akismet', 'prepare_custom_form_values' ), 10, 2 );
		// Current Fluent Form hooks.
		add_filter( 'fluentform/form_element_start', array( 'Akismet', 'output_custom_form_fields' ) );
		add_filter( 'fluentform/akismet_fields', array( 'Akismet', 'prepare_custom_form_values' ), 10, 2 );

add_action( 'update_option_wordpress_api_key', array( 'Akismet', 'updated_option' ), 10, 2 );
		add_action( 'add_option_wordpress_api_key', array( 'Akismet', 'added_option' ), 10, 2 );

add_action( 'comment_form_after', array( 'Akismet', 'display_comment_form_privacy_notice' ) );
	}

public static function get_api_key() {
		return apply_filters( 'akismet_get_api_key', defined( 'WPCOM_API_KEY' ) ? constant( 'WPCOM_API_KEY' ) : get_option( 'wordpress_api_key' ) );
	}

/**
	 * Exchange the API key for a token that can only be used to access stats pages.
	 *
	 * @return string
	 */
	public static function get_access_token() {
		static $access_token = null;

if ( is_null( $access_token ) ) {
			$request_args = array( 'api_key' => self::get_api_key() );

$request_args = apply_filters( 'akismet_request_args', $request_args, 'token' );

$response = self::http_post( self::build_query( $request_args ), 'token' );

$access_token = $response[1];
		}

return $access_token;
	}

public static function check_key_status( $key, $ip = null ) {
		$request_args = array(
			'key'  => $key,
			'blog' => get_option( 'home' ),
		);

$request_args = apply_filters( 'akismet_request_args', $request_args, 'verify-key' );

return self::http_post( self::build_query( $request_args ), 'verify-key', $ip );
	}

public static function verify_key( $key, $ip = null ) {
		// Shortcut for obviously invalid keys.
		if ( strlen( $key ) != 12 ) {
			return 'invalid';
		}

$response = self::check_key_status( $key, $ip );

if ( $response[1] != 'valid' && $response[1] != 'invalid' ) {
			return 'failed';
		}

return $response[1];
	}

public static function deactivate_key( $key ) {
		$request_args = array(
			'key'  => $key,
			'blog' => get_option( 'home' ),
		);

$request_args = apply_filters( 'akismet_request_args', $request_args, 'deactivate' );

$response = self::http_post( self::build_query( $request_args ), 'deactivate' );

if ( $response[1] != 'deactivated' ) {
			return 'failed';
		}

return $response[1];
	}

/**
	 * Add the akismet option to the Jetpack options management whitelist.
	 *
	 * @param array $options The list of whitelisted option names.
	 * @return array The updated whitelist
	 */
	public static function add_to_jetpack_options_whitelist( $options ) {
		$options[] = 'wordpress_api_key';
		return $options;
	}

/**
	 * When the akismet option is updated, run the registration call.
	 *
	 * This should only be run when the option is updated from the Jetpack/WP.com
	 * API call, and only if the new key is different than the old key.
	 *
	 * @param mixed $old_value   The old option value.
	 * @param mixed $value       The new option value.
	 */
	public static function updated_option( $old_value, $value ) {
		// Not an API call
		if ( ! class_exists( 'WPCOM_JSON_API_Update_Option_Endpoint' ) ) {
			return;
		}
		// Only run the registration if the old key is different.
		if ( $old_value !== $value ) {
			self::verify_key( $value );
		}
	}

/**
	 * Treat the creation of an API key the same as updating the API key to a new value.
	 *
	 * @param mixed $option_name   Will always be "wordpress_api_key", until something else hooks in here.
	 * @param mixed $value         The option value.
	 */
	public static function added_option( $option_name, $value ) {
		if ( 'wordpress_api_key' === $option_name ) {
			return self::updated_option( '', $value );
		}
	}

public static function rest_auto_check_comment( $commentdata ) {
		return self::auto_check_comment( $commentdata, 'rest_api' );
	}

/**
	 * Check a comment for spam.
	 *
	 * @param array  $commentdata
	 * @param string $context What kind of request triggered this comment check? Possible values are 'default', 'rest_api', and 'xml-rpc'.
	 * @return array|WP_Error Either the $commentdata array with additional entries related to its spam status
	 *                        or a WP_Error, if it's a REST API request and the comment should be discarded.
	 */
	public static function auto_check_comment( $commentdata, $context = 'default' ) {
		// If no key is configured, then there's no point in doing any of this.
		if ( ! self::get_api_key() ) {
			return $commentdata;
		}

if ( ! isset( $commentdata['comment_meta'] ) ) {
			$commentdata['comment_meta'] = array();
		}

self::$last_comment_result = null;

// Skip the Akismet check if the comment matches the Disallowed Keys list.
		if ( function_exists( 'wp_check_comment_disallowed_list' ) ) {
			$comment_author       = isset( $commentdata['comment_author'] ) ? $commentdata['comment_author'] : '';
			$comment_author_email = isset( $commentdata['comment_author_email'] ) ? $commentdata['comment_author_email'] : '';
			$comment_author_url   = isset( $commentdata['comment_author_url'] ) ? $commentdata['comment_author_url'] : '';
			$comment_content      = isset( $commentdata['comment_content'] ) ? $commentdata['comment_content'] : '';
			$comment_author_ip    = isset( $commentdata['comment_author_IP'] ) ? $commentdata['comment_author_IP'] : '';
			$comment_agent        = isset( $commentdata['comment_agent'] ) ? $commentdata['comment_agent'] : '';

if ( wp_check_comment_disallowed_list( $comment_author, $comment_author_email, $comment_author_url, $comment_content, $comment_author_ip, $comment_agent ) ) {
				$commentdata['akismet_result'] = 'skipped';
				$commentdata['comment_meta']['akismet_result'] = 'skipped';

$commentdata['akismet_skipped_microtime'] = microtime( true );
				$commentdata['comment_meta']['akismet_skipped_microtime'] = $commentdata['akismet_skipped_microtime'];

self::set_last_comment( $commentdata );

return $commentdata;
			}
		}

$comment = $commentdata;

$comment['user_ip']      = self::get_ip_address();
		$comment['user_agent']   = self::get_user_agent();
		$comment['referrer']     = self::get_referer();
		$comment['blog']         = get_option( 'home' );
		$comment['blog_lang']    = get_locale();
		$comment['blog_charset'] = get_option( 'blog_charset' );
		$comment['permalink']    = get_permalink( $comment['comment_post_ID'] );

if ( ! empty( $comment['user_ID'] ) ) {
			$comment['user_role'] = self::get_user_roles( $comment['user_ID'] );
		}

/** See filter documentation in init_hooks(). */
		$akismet_nonce_option             = apply_filters( 'akismet_comment_nonce', get_option( 'akismet_comment_nonce' ) );
		$comment['akismet_comment_nonce'] = 'inactive';
		if ( $akismet_nonce_option == 'true' || $akismet_nonce_option == '' ) {
			$comment['akismet_comment_nonce'] = 'failed';
			if ( isset( $_POST['akismet_comment_nonce'] ) && wp_verify_nonce( $_POST['akismet_comment_nonce'], 'akismet_comment_nonce_' . $comment['comment_post_ID'] ) ) {
				$comment['akismet_comment_nonce'] = 'passed';
			}

// comment reply in wp-admin
			if ( isset( $_POST['_ajax_nonce-replyto-comment'] ) && check_ajax_referer( 'replyto-comment', '_ajax_nonce-replyto-comment' ) ) {
				$comment['akismet_comment_nonce'] = 'passed';
			}
		}

if ( self::is_test_mode() ) {
			$comment['is_test'] = 'true';
		}

foreach ( $_POST as $key => $value ) {
			if ( is_string( $value ) ) {
				$comment[ "POST_{$key}" ] = $value;
			}
		}

foreach ( $_SERVER as $key => $value ) {
			if ( ! is_string( $value ) ) {
				continue;
			}

if ( preg_match( '/^HTTP_COOKIE/', $key ) ) {
				continue;
			}

// Send any potentially useful $_SERVER vars, but avoid sending junk we don't need.
			if ( preg_match( '/^(HTTP_|REMOTE_ADDR|REQUEST_URI|DOCUMENT_URI)/', $key ) ) {
				$comment[ "$key" ] = $value;
			}
		}

$post = get_post( $comment['comment_post_ID'] );

if ( ! is_null( $post ) ) {
			// $post can technically be null, although in the past, it's always been an indicator of another plugin interfering.
			$comment['comment_post_modified_gmt'] = $post->post_modified_gmt;

// Tags and categories are important context in which to consider the comment.
			$comment['comment_context'] = array();

$tag_names = wp_get_post_tags( $post->ID, array( 'fields' => 'names' ) );

if ( $tag_names && ! is_wp_error( $tag_names ) ) {
				foreach ( $tag_names as $tag_name ) {
					$comment['comment_context'][] = $tag_name;
				}
			}

$category_names = wp_get_post_categories( $post->ID, array( 'fields' => 'names' ) );

if ( $category_names && ! is_wp_error( $category_names ) ) {
				foreach ( $category_names as $category_name ) {
					$comment['comment_context'][] = $category_name;
				}
			}
		}

// Set the webhook callback URL. The Akismet servers may make a request to this URL
		// if a comment's spam status changes.
		$comment['callback'] = get_rest_url( null, 'akismet/v1/webhook' );

/**
		 * Filter the data that is used to generate the request body for the API call.
		 *
		 * @since 5.3.1
		 *
		 * @param array $comment An array of request data.
		 * @param string $endpoint The API endpoint being requested.
		 */
		$comment = apply_filters( 'akismet_request_args', $comment, 'comment-check' );

$response = self::http_post( self::build_query( $comment ), 'comment-check' );

do_action( 'akismet_comment_check_response', $response );

$commentdata['comment_as_submitted'] = array_intersect_key( $comment, self::$comment_as_submitted_allowed_keys );

// Also include any form fields we inject into the comment form, like ak_js
		foreach ( $_POST as $key => $value ) {
			if ( is_string( $value ) && strpos( $key, 'ak_' ) === 0 ) {
				$commentdata['comment_as_submitted'][ 'POST_' . $key ] = $value;
			}
		}

$commentdata['akismet_result'] = $response[1];

if ( 'true' === $response[1] || 'false' === $response[1] ) {
			$commentdata['comment_meta']['akismet_result'] = $response[1];
		} else {
			$commentdata['comment_meta']['akismet_error'] = time();
		}

if ( isset( $response[0]['x-akismet-pro-tip'] ) ) {
			$commentdata['akismet_pro_tip'] = $response[0]['x-akismet-pro-tip'];
			$commentdata['comment_meta']['akismet_pro_tip'] = $response[0]['x-akismet-pro-tip'];
		}

if ( isset( $response[0]['x-akismet-guid'] ) ) {
			$commentdata['akismet_guid'] = $response[0]['x-akismet-guid'];
			$commentdata['comment_meta']['akismet_guid'] = $response[0]['x-akismet-guid'];

if ( 'false' === $response[1] ) {
				// If Akismet has indicated that there is more processing to be done before this comment
				// can be fully classified, delay moderation emails until that processing is complete.
				if ( isset( $response[0]['X-akismet-recheck-after'] ) ) {
					// Prevent this comment from reaching Active status (keep in Pending) until
					// it's finished being checked.
					$commentdata['comment_approved'] = '0';
					self::$last_comment_result = '0';

// Indicate that we should schedule a fallback so that if the site never receives a
					// followup from Akismet, the emails will still be sent. We don't schedule it here
					// because we don't yet have the comment ID. Add an extra minute to ensure that the
					// fallback email isn't sent while the recheck or webhook call is happening.
					$delay = $response[0]['X-akismet-recheck-after'] * 2;

$commentdata['comment_meta']['akismet_schedule_approval_fallback'] = $delay;

// If this commentmeta is present, we'll prevent the moderation email from sending once.
					$commentdata['comment_meta']['akismet_delay_moderation_email'] = true;

self::log( 'Delaying moderation email for comment from ' . $commentdata['comment_author'] . ' for ' . $delay . ' seconds' );

$commentdata['comment_meta']['akismet_schedule_email_fallback'] = $delay;
				}
			}
		}

$commentdata['comment_meta']['akismet_as_submitted'] = $commentdata['comment_as_submitted'];

if ( isset( $response[0]['x-akismet-error'] ) ) {
			// An error occurred that we anticipated (like a suspended key) and want the user to act on.
			// Send to moderation.
			self::$last_comment_result = '0';
		} elseif ( 'true' == $response[1] ) {
			// akismet_spam_count will be incremented later by comment_is_spam()
			self::$last_comment_result = 'spam';

$discard = ( isset( $commentdata['akismet_pro_tip'] ) && $commentdata['akismet_pro_tip'] === 'discard' && self::allow_discard() );

do_action( 'akismet_spam_caught', $discard );

if ( $discard ) {
				// The spam is obvious, so we're bailing out early.
				// akismet_result_spam() won't be called so bump the counter here
				if ( $incr = apply_filters( 'akismet_spam_count_incr', 1 ) ) {
					update_option( 'akismet_spam_count', get_option( 'akismet_spam_count' ) + $incr );
				}

if ( 'rest_api' === $context ) {
					return new WP_Error( 'akismet_rest_comment_discarded', __( 'Comment discarded.', 'akismet' ) );
				} elseif ( 'xml-rpc' === $context ) {
					// If this is a pingback that we're pre-checking, the discard behavior is the same as the normal spam response behavior.
					return $commentdata;
				} else {
					// Redirect back to the previous page, or failing that, the post permalink, or failing that, the homepage of the blog.
					$redirect_to = isset( $_SERVER['HTTP_REFERER'] ) ? $_SERVER['HTTP_REFERER'] : ( $post ? get_permalink( $post ) : home_url() );
					wp_safe_redirect( esc_url_raw( $redirect_to ) );
					die();
				}
			} elseif ( 'rest_api' === $context ) {
				// The way the REST API structures its calls, we can set the comment_approved value right away.
				$commentdata['comment_approved'] = 'spam';
			}
		}

// if the response is neither true nor false, hold the comment for moderation and schedule a recheck
		if ( 'true' != $response[1] && 'false' != $response[1] ) {
			if ( ! current_user_can( 'moderate_comments' ) ) {
				// Comment status should be moderated
				self::$last_comment_result = '0';
			}

$commentdata['comment_meta']['akismet_delay_moderation_email'] = true;

if ( ! wp_next_scheduled( 'akismet_schedule_cron_recheck' ) ) {
				wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' );
				do_action( 'akismet_scheduled_recheck', 'invalid-response-' . $response[1] );
			}
		}

// Delete old comments daily
		if ( ! wp_next_scheduled( 'akismet_scheduled_delete' ) ) {
			wp_schedule_event( time(), 'daily', 'akismet_scheduled_delete' );
		}

self::set_last_comment( $commentdata );
		self::fix_scheduled_recheck();

return $commentdata;
	}

public static function get_last_comment() {
		return self::$last_comment;
	}

public static function set_last_comment( $comment ) {
		if ( is_null( $comment ) ) {
			// This never happens in our code.
			self::$last_comment = null;
		} else {
			// We filter it here so that it matches the filtered comment data that we'll have to compare against later.
			// wp_filter_comment expects comment_author_IP
			self::$last_comment = wp_filter_comment(
				array_merge(
					array( 'comment_author_IP' => self::get_ip_address() ),
					$comment
				)
			);
		}
	}

// this fires on wp_insert_comment.  we can't update comment_meta when auto_check_comment() runs
	// because we don't know the comment ID at that point.
	public static function auto_check_update_meta( $id, $comment ) {
		// wp_insert_comment() might be called in other contexts, so make sure this is the same comment
		// as was checked by auto_check_comment
		if ( is_object( $comment ) && ! empty( self::$last_comment ) && is_array( self::$last_comment ) ) {
			if ( self::matches_last_comment_by_id( $id ) ) {
				// normal result: true or false
				if ( isset( self::$last_comment['akismet_result'] ) && self::$last_comment['akismet_result'] == 'true' ) {
					self::update_comment_history( $comment->comment_ID, '', 'check-spam' );
					if ( $comment->comment_approved != 'spam' ) {
						self::update_comment_history(
							$comment->comment_ID,
							'',
							'status-changed-' . $comment->comment_approved
						);
					}
				} elseif ( isset( self::$last_comment['akismet_result'] ) && self::$last_comment['akismet_result'] == 'false' ) {
					if ( get_comment_meta( $comment->comment_ID, 'akismet_schedule_approval_fallback', true ) ) {
						self::update_comment_history( $comment->comment_ID, '', 'check-ham-pending' );
					} else {
						self::update_comment_history( $comment->comment_ID, '', 'check-ham' );
					}

// Status could be spam or trash, depending on the WP version and whether this change applies:
					// https://core.trac.wordpress.org/changeset/34726
					if ( $comment->comment_approved == 'spam' || $comment->comment_approved == 'trash' ) {
						if ( function_exists( 'wp_check_comment_disallowed_list' ) ) {
							if ( wp_check_comment_disallowed_list( $comment->comment_author, $comment->comment_author_email, $comment->comment_author_url, $comment->comment_content, $comment->comment_author_IP, $comment->comment_agent ) ) {
								self::update_comment_history( $comment->comment_ID, '', 'wp-disallowed' );
							} else {
								self::update_comment_history( $comment->comment_ID, '', 'status-changed-' . $comment->comment_approved );
							}
						} else {
							self::update_comment_history( $comment->comment_ID, '', 'status-changed-' . $comment->comment_approved );
						}
					}
				} elseif ( isset( self::$last_comment['akismet_result'] ) && 'skipped' == self::$last_comment['akismet_result'] ) {
					// The comment wasn't sent to Akismet because it matched the disallowed comment keys.
					self::update_comment_history( $comment->comment_ID, '', 'wp-disallowed' );
					self::update_comment_history( $comment->comment_ID, '', 'akismet-skipped-disallowed' );
				} else if ( ! isset( self::$last_comment['akismet_result'] ) ) {
					// Add a generic skipped history item.
					self::update_comment_history( $comment->comment_ID, '', 'akismet-skipped' );
				} else {
					// abnormal result: error
					self::update_comment_history(
						$comment->comment_ID,
						'',
						'check-error',
						array( 'response' => substr( self::$last_comment['akismet_result'], 0, 50 ) )
					);
				}
			}
		}
	}

/**
	 * After the comment has been inserted, we have access to the comment ID. Now, we can
	 * schedule the fallback moderation/notification emails using the comment ID instead
	 * of relying on a lookup of the GUID in the commentmeta table.
	 *
	 * @param int $id The comment ID.
	 * @param object $comment The comment object.
	 */
	public static function schedule_email_fallback( $id, $comment ) {
		self::log( 'Checking whether to schedule_email_fallback for comment #' . $id );

// If the moderation/notification emails for this comment were delayed
		$email_delay = get_comment_meta( $id, 'akismet_schedule_email_fallback', true );

if ( $email_delay ) {
			delete_comment_meta( $id, 'akismet_schedule_email_fallback' );

wp_schedule_single_event( time() + $email_delay, 'akismet_email_fallback', array( $id ) );

self::log( 'Scheduled email fallback for ' . ( time() + $email_delay ) . ' for comment #' . $id );
		} else {
			self::log( 'No need to schedule_email_fallback for comment #' . $id );
		}
	}

/**
	 * Send out the notification emails if they were previously delayed while waiting
	 * for a recheck or webhook.
	 *
	 * @param int $comment_ID The comment ID.
	 */
	public static function email_fallback( $comment_id ) {
		self::log( 'In email fallback for comment #' . $comment_id );

if ( get_comment_meta( $comment_id, 'akismet_delayed_moderation_email', true ) ) {
			self::log( 'Triggering notification emails for comment #' . $comment_id . '. They will be sent if comment is not spam.' );

delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' );
			wp_new_comment_notify_moderator( $comment_id );
			wp_new_comment_notify_postauthor( $comment_id );
		} else {
			self::log( 'No need to send fallback email for comment #' . $comment_id );
		}

delete_comment_meta( $comment_id, 'akismet_delay_moderation_email' );
	}

/**
	 * After the comment has been inserted, we have access to the comment ID. Now, we can
	 * schedule the fallback moderation/notification emails using the comment ID instead
	 * of relying on a lookup of the GUID in the commentmeta table.
	 *
	 * @param int $id The comment ID.
	 * @param object $comment The comment object.
	 */
	public static function schedule_approval_fallback( $id, $comment ) {
		self::log( 'Checking whether to schedule_approval_fallback for comment #' . $id );

// If the moderation/notification emails for this comment were delayed
		$approval_delay = get_comment_meta( $id, 'akismet_schedule_approval_fallback', true );

if ( $approval_delay ) {
			delete_comment_meta( $id, 'akismet_schedule_approval_fallback' );

wp_schedule_single_event( time() + $approval_delay, 'akismet_approval_fallback', array( $id ) );

self::log( 'Scheduled approval fallback for ' . ( time() + $approval_delay ) . ' for comment #' . $id );
		} else {
			self::log( 'No need to schedule_approval_fallback for comment #' . $id );
		}
	}

/**
	 * If no other process has approved or spammed this comment since it was put in pending, approve it.
	 *
	 * @param int $comment_ID The comment ID.
	 */
	public static function approval_fallback( $comment_id ) {
		self::log( 'In approval fallback for comment #' . $comment_id );

if ( wp_get_comment_status( $comment_id ) == 'unapproved' ) {
			if ( self::last_comment_status_change_came_from_akismet( $comment_id ) ) {
				$comment = get_comment( $comment_id );

if ( ! $comment ) {
					self::log( 'Comment #' . $comment_id . ' no longer exists.' );
				} else if ( check_comment( $comment->comment_author, $comment->comment_author_email, $comment->comment_author_url, $comment->comment_content, $comment->comment_author_IP, $comment->comment_agent, $comment->comment_type ) ) {
					self::log( 'Approving comment #' . $comment_id );

wp_set_comment_status( $comment_id, 1 );
				} else {
					self::log( 'Not approving comment #' . $comment_id . ' because it does not pass check_comment()' );
				}

self::update_comment_history( $comment->comment_ID, '', 'check-ham' );
			} else {
				self::log( 'No need to fallback approve comment #' . $comment_id . ' because it was not last modified by Akismet.' );

$history = self::get_comment_history( $comment_id );

if ( ! empty( $history ) ) {
					$most_recent_history_event = $history[0];

error_log( 'Comment history: ' . print_r( $history, true ) );
				}
			}
		} else {
			self::log( 'No need to fallback approve comment #' . $comment_id . ' because it is not pending.' );
		}
	}

public static function delete_old_comments() {
		global $wpdb;

/**
		 * Determines how many comments will be deleted in each batch.
		 *
		 * @param int The default, as defined by AKISMET_DELETE_LIMIT.
		 */
		$delete_limit = apply_filters( 'akismet_delete_comment_limit', defined( 'AKISMET_DELETE_LIMIT' ) ? AKISMET_DELETE_LIMIT : 10000 );
		$delete_limit = max( 1, intval( $delete_limit ) );

/**
		 * Determines how many days a comment will be left in the Spam queue before being deleted.
		 *
		 * @param int The default number of days.
		 */
		$delete_interval = apply_filters( 'akismet_delete_comment_interval', 15 );
		$delete_interval = max( 1, intval( $delete_interval ) );

while ( $comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT comment_id FROM {$wpdb->comments} WHERE DATE_SUB(NOW(), INTERVAL %d DAY) > comment_date_gmt AND comment_approved = 'spam' LIMIT %d", $delete_interval, $delete_limit ) ) ) {
			if ( empty( $comment_ids ) ) {
				return;
			}

$wpdb->queries = array();

$comments = array();

foreach ( $comment_ids as $comment_id ) {
				$comments[ $comment_id ] = get_comment( $comment_id );

do_action( 'delete_comment', $comment_id, $comments[ $comment_id ] );
				do_action( 'akismet_batch_delete_count', __FUNCTION__ );
			}

// Prepared as strings since comment_id is an unsigned BIGINT, and using %d will constrain the value to the maximum signed BIGINT.
			$format_string = implode( ', ', array_fill( 0, is_countable( $comment_ids ) ? count( $comment_ids ) : 0, '%s' ) );

$wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->comments} WHERE comment_id IN ( " . $format_string . ' )', $comment_ids ) );
			$wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->commentmeta} WHERE comment_id IN ( " . $format_string . ' )', $comment_ids ) );

foreach ( $comment_ids as $comment_id ) {
				do_action( 'deleted_comment', $comment_id, $comments[ $comment_id ] );
				unset( $comments[ $comment_id ] );
			}

clean_comment_cache( $comment_ids );
			do_action( 'akismet_delete_comment_batch', is_countable( $comment_ids ) ? count( $comment_ids ) : 0 );
		}

if ( apply_filters( 'akismet_optimize_table', ( mt_rand( 1, 5000 ) == 11 ), $wpdb->comments ) ) { // lucky number
			$wpdb->query( "OPTIMIZE TABLE {$wpdb->comments}" );
		}
	}

public static function delete_old_comments_meta() {
		global $wpdb;

$interval = apply_filters( 'akismet_delete_commentmeta_interval', 15 );

// enforce a minimum of 1 day
		$interval = absint( $interval );
		if ( $interval < 1 ) {
			$interval = 1;
		}

// akismet_as_submitted meta values are large, so expire them
		// after $interval days regardless of the comment status
		while ( $comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT m.comment_id FROM {$wpdb->commentmeta} as m INNER JOIN {$wpdb->comments} as c USING(comment_id) WHERE m.meta_key = 'akismet_as_submitted' AND DATE_SUB(NOW(), INTERVAL %d DAY) > c.comment_date_gmt LIMIT 10000", $interval ) ) ) {
			if ( empty( $comment_ids ) ) {
				return;
			}

$wpdb->queries = array();

foreach ( $comment_ids as $comment_id ) {
				delete_comment_meta( $comment_id, 'akismet_as_submitted' );
				do_action( 'akismet_batch_delete_count', __FUNCTION__ );
			}

do_action( 'akismet_delete_commentmeta_batch', is_countable( $comment_ids ) ? count( $comment_ids ) : 0 );
		}

if ( apply_filters( 'akismet_optimize_table', ( mt_rand( 1, 5000 ) == 11 ), $wpdb->commentmeta ) ) { // lucky number
			$wpdb->query( "OPTIMIZE TABLE {$wpdb->commentmeta}" );
		}
	}

// Clear out comments meta that no longer have corresponding comments in the database
	public static function delete_orphaned_commentmeta() {
		global $wpdb;

$last_meta_id  = 0;
		$start_time    = isset( $_SERVER['REQUEST_TIME_FLOAT'] ) ? $_SERVER['REQUEST_TIME_FLOAT'] : microtime( true );
		$max_exec_time = max( ini_get( 'max_execution_time' ) - 5, 3 );

while ( $commentmeta_results = $wpdb->get_results( $wpdb->prepare( "SELECT m.meta_id, m.comment_id, m.meta_key FROM {$wpdb->commentmeta} as m LEFT JOIN {$wpdb->comments} as c USING(comment_id) WHERE c.comment_id IS NULL AND m.meta_id > %d ORDER BY m.meta_id LIMIT 1000", $last_meta_id ) ) ) {
			if ( empty( $commentmeta_results ) ) {
				return;
			}

$wpdb->queries = array();

$commentmeta_deleted = 0;

foreach ( $commentmeta_results as $commentmeta ) {
				if ( 'akismet_' == substr( $commentmeta->meta_key, 0, 8 ) ) {
					delete_comment_meta( $commentmeta->comment_id, $commentmeta->meta_key );
					do_action( 'akismet_batch_delete_count', __FUNCTION__ );
					++$commentmeta_deleted;
				}

$last_meta_id = $commentmeta->meta_id;
			}

do_action( 'akismet_delete_commentmeta_batch', $commentmeta_deleted );

// If we're getting close to max_execution_time, quit for this round.
			if ( microtime( true ) - $start_time > $max_exec_time ) {
				return;
			}
		}

if ( apply_filters( 'akismet_optimize_table', ( mt_rand( 1, 5000 ) == 11 ), $wpdb->commentmeta ) ) { // lucky number
			$wpdb->query( "OPTIMIZE TABLE {$wpdb->commentmeta}" );
		}
	}

// how many approved comments does this author have?
	public static function get_user_comments_approved( $user_id, $comment_author_email, $comment_author, $comment_author_url ) {
		global $wpdb;

/**
		 * Which comment types should be ignored when counting a user's approved comments?
		 *
		 * Some plugins add entries to the comments table that are not actual
		 * comments that could have been checked by Akismet. Allow these comments
		 * to be excluded from the "approved comment count" query in order to
		 * avoid artificially inflating the approved comment count.
		 *
		 * @param array $comment_types An array of comment types that won't be considered
		 *                             when counting a user's approved comments.
		 *
		 * @since 4.2.2
		 */
		$excluded_comment_types = apply_filters( 'akismet_excluded_comment_types', array() );

$comment_type_where = '';

if ( is_array( $excluded_comment_types ) && ! empty( $excluded_comment_types ) ) {
			$excluded_comment_types = array_unique( $excluded_comment_types );

foreach ( $excluded_comment_types as $excluded_comment_type ) {
				$comment_type_where .= $wpdb->prepare( ' AND comment_type <> %s ', $excluded_comment_type );
			}
		}

if ( ! empty( $user_id ) ) {
			return (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM {$wpdb->comments} WHERE user_id = %d AND comment_approved = 1" . $comment_type_where, $user_id ) );
		}

if ( ! empty( $comment_author_email ) ) {
			return (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM {$wpdb->comments} WHERE comment_author_email = %s AND comment_author = %s AND comment_author_url = %s AND comment_approved = 1" . $comment_type_where, $comment_author_email, $comment_author, $comment_author_url ) );
		}

return 0;
	}

/**
	 * Get the full comment history for a given comment, as an array in reverse chronological order.
	 * Each entry will have an 'event', a 'time', and possibly a 'message' member (if the entry is old enough).
	 * Some entries will also have a 'user' or 'meta' member.
	 *
	 * @param int $comment_id The relevant comment ID.
	 * @return array|bool An array of history events, or false if there is no history.
	 */
	public static function get_comment_history( $comment_id ) {
		$history = get_comment_meta( $comment_id, 'akismet_history', false );
		if ( empty( $history ) || empty( $history[0] ) ) {
			return false;
		}

/*
		// To see all variants when testing.
		$history[] = array( 'time' => 445856401, 'message' => 'Old versions of Akismet stored the message as a literal string in the commentmeta.', 'event' => null );
		$history[] = array( 'time' => 445856402, 'event' => 'recheck-spam' );
		$history[] = array( 'time' => 445856403, 'event' => 'check-spam' );
		$history[] = array( 'time' => 445856404, 'event' => 'recheck-ham' );
		$history[] = array( 'time' => 445856405, 'event' => 'check-ham' );
		$history[] = array( 'time' => 445856405, 'event' => 'check-ham-pending' );
		$history[] = array( 'time' => 445856406, 'event' => 'wp-blacklisted' );
		$history[] = array( 'time' => 445856406, 'event' => 'wp-disallowed' );
		$history[] = array( 'time' => 445856407, 'event' => 'report-spam' );
		$history[] = array( 'time' => 445856408, 'event' => 'report-spam', 'user' => 'sam' );
		$history[] = array( 'message' => 'sam reported this comment as spam (hardcoded message).', 'time' => 445856400, 'event' => 'report-spam', 'user' => 'sam' );
		$history[] = array( 'time' => 445856409, 'event' => 'report-ham', 'user' => 'sam' );
		$history[] = array( 'message' => 'sam reported this comment as ham (hardcoded message).', 'time' => 445856400, 'event' => 'report-ham', 'user' => 'sam' ); //
		$history[] = array( 'time' => 445856410, 'event' => 'cron-retry-spam' );
		$history[] = array( 'time' => 445856411, 'event' => 'cron-retry-ham' );
		$history[] = array( 'time' => 445856412, 'event' => 'check-error' ); //
		$history[] = array( 'time' => 445856413, 'event' => 'check-error', 'meta' => array( 'response' => 'The server was taking a nap.' ) );
		$history[] = array( 'time' => 445856414, 'event' => 'recheck-error' ); // Should not generate a message.
		$history[] = array( 'time' => 445856415, 'event' => 'recheck-error', 'meta' => array( 'response' => 'The server was taking a nap.' ) );
		$history[] = array( 'time' => 445856416, 'event' => 'status-changedtrash' );
		$history[] = array( 'time' => 445856417, 'event' => 'status-changedspam' );
		$history[] = array( 'time' => 445856418, 'event' => 'status-changedhold' );
		$history[] = array( 'time' => 445856419, 'event' => 'status-changedapprove' );
		$history[] = array( 'time' => 445856420, 'event' => 'status-changed-trash' );
		$history[] = array( 'time' => 445856421, 'event' => 'status-changed-spam' );
		$history[] = array( 'time' => 445856422, 'event' => 'status-changed-hold' );
		$history[] = array( 'time' => 445856423, 'event' => 'status-changed-approve' );
		$history[] = array( 'time' => 445856424, 'event' => 'status-trash', 'user' => 'sam' );
		$history[] = array( 'time' => 445856425, 'event' => 'status-spam', 'user' => 'sam' );
		$history[] = array( 'time' => 445856426, 'event' => 'status-hold', 'user' => 'sam' );
		$history[] = array( 'time' => 445856427, 'event' => 'status-approve', 'user' => 'sam' );
		$history[] = array( 'time' => 445856427, 'event' => 'webhook-spam' );
		$history[] = array( 'time' => 445856427, 'event' => 'webhook-ham' );
		$history[] = array( 'time' => 445856427, 'event' => 'webhook-spam-noaction' );
		$history[] = array( 'time' => 445856427, 'event' => 'webhook-ham-noaction' );
		*/

// Validate history entries to guard against malformed data.
		// In one case, serialized data was returned in $entry instead of an array.
		$history = array_filter(
			$history,
			function ( $entry ) {
				return is_array( $entry ) && isset( $entry['time'] ) && is_numeric( $entry['time'] );
			}
		);

usort( $history, 'Akismet::_cmp_time' );

return $history;
	}

/**
	 * Log an event for a given comment, storing it in comment_meta.
	 *
	 * @param int    $comment_id The ID of the relevant comment.
	 * @param string $message The string description of the event. No longer used.
	 * @param string $event The event code.
	 * @param array  $meta Metadata about the history entry. e.g., the user that reported or changed the status of a given comment.
	 */
	public static function update_comment_history( $comment_id, $message, $event = null, $meta = null ) {
		global $current_user;

$user = '';

$event = array(
			'time'  => self::_get_microtime(),
			'event' => $event,
		);

if ( is_object( $current_user ) && isset( $current_user->user_login ) ) {
			$event['user'] = $current_user->user_login;
		}

if ( ! empty( $meta ) ) {
			$event['meta'] = $meta;
		}

// $unique = false so as to allow multiple values per comment
		$r = add_comment_meta( $comment_id, 'akismet_history', $event, false );
	}

public static function check_db_comment( $id, $recheck_reason = 'recheck_queue' ) {
		global $wpdb;

if ( ! self::get_api_key() ) {
			return new WP_Error( 'akismet-not-configured', __( 'Akismet is not configured. Please enter an API key.', 'akismet' ) );
		}

$c = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->comments} WHERE comment_ID = %d", $id ), ARRAY_A );

if ( ! $c ) {
			return new WP_Error( 'invalid-comment-id', __( 'Comment not found.', 'akismet' ) );
		}

$c['user_ip']        = $c['comment_author_IP'];
		$c['user_agent']     = $c['comment_agent'];
		$c['referrer']       = '';
		$c['blog']           = get_option( 'home' );
		$c['blog_lang']      = get_locale();
		$c['blog_charset']   = get_option( 'blog_charset' );
		$c['permalink']      = get_permalink( $c['comment_post_ID'] );
		$c['recheck_reason'] = $recheck_reason;

$c['user_role'] = '';
		if ( ! empty( $c['user_ID'] ) ) {
			$c['user_role'] = self::get_user_roles( $c['user_ID'] );
		}

if ( self::is_test_mode() ) {
			$c['is_test'] = 'true';
		}

$c = apply_filters( 'akismet_request_args', $c, 'comment-check' );

$response = self::http_post( self::build_query( $c ), 'comment-check' );

if ( ! empty( $response[1] ) ) {
			return $response[1];
		}

return false;
	}

public static function recheck_comment( $id, $recheck_reason = 'recheck_queue' ) {
		add_comment_meta( $id, 'akismet_rechecking', true );

$api_response = self::check_db_comment( $id, $recheck_reason );

if ( is_wp_error( $api_response ) ) {
			// Invalid comment ID.
		} elseif ( 'true' === $api_response ) {
			wp_set_comment_status( $id, 'spam' );
			update_comment_meta( $id, 'akismet_result', 'true' );
			delete_comment_meta( $id, 'akismet_error' );
			delete_comment_meta( $id, 'akismet_delay_moderation_email' );
			delete_comment_meta( $id, 'akismet_delayed_moderation_email' );
			delete_comment_meta( $id, 'akismet_schedule_approval_fallback' );
			delete_comment_meta( $id, 'akismet_schedule_email_fallback' );
			self::update_comment_history( $id, '', 'recheck-spam' );
		} elseif ( 'false' === $api_response ) {
			update_comment_meta( $id, 'akismet_result', 'false' );
			delete_comment_meta( $id, 'akismet_error' );
			delete_comment_meta( $id, 'akismet_delay_moderation_email' );
			delete_comment_meta( $id, 'akismet_delayed_moderation_email' );
			delete_comment_meta( $id, 'akismet_schedule_approval_fallback' );
			delete_comment_meta( $id, 'akismet_schedule_email_fallback' );
			self::update_comment_history( $id, '', 'recheck-ham' );
		} else {
			// abnormal result: error
			update_comment_meta( $id, 'akismet_result', 'error' );
			self::update_comment_history(
				$id,
				'',
				'recheck-error',
				array( 'response' => substr( $api_response, 0, 50 ) )
			);
		}

delete_comment_meta( $id, 'akismet_rechecking' );

return $api_response;
	}

public static function transition_comment_status( $new_status, $old_status, $comment ) {

if ( $new_status == $old_status ) {
			return;
		}

if ( 'spam' === $new_status || 'spam' === $old_status ) {
			// Clear the cache of the "X comments in your spam queue" count on the dashboard.
			wp_cache_delete( 'akismet_spam_count', 'widget' );
		}

// we don't need to record a history item for deleted comments
		if ( $new_status == 'delete' ) {
			return;
		}

if ( ! current_user_can( 'edit_post', $comment->comment_post_ID ) && ! current_user_can( 'moderate_comments' ) ) {
			return;
		}

if ( defined( 'WP_IMPORTING' ) && WP_IMPORTING == true ) {
			return;
		}

// if this is present, it means the status has been changed by a re-check, not an explicit user action
		if ( get_comment_meta( $comment->comment_ID, 'akismet_rechecking' ) ) {
			return;
		}

if ( function_exists( 'getallheaders' ) ) {
			$request_headers = getallheaders();

foreach ( $request_headers as $header => $value ) {
				if ( strtolower( $header ) == 'x-akismet-webhook' ) {
					// This change is due to a webhook request.
					return;
				}
			}
		}

// Assumption alert:
		// We want to submit comments to Akismet only when a moderator explicitly spams or approves it - not if the status
		// is changed automatically by another plugin.  Unfortunately WordPress doesn't provide an unambiguous way to
		// determine why the transition_comment_status action was triggered.  And there are several different ways by which
		// to spam and unspam comments: bulk actions, ajax, links in moderation emails, the dashboard, and perhaps others.
		// We'll assume that this is an explicit user action if certain POST/GET variables exist.
		if (
			// status=spam: Marking as spam via the REST API or...
			// status=unspam: I'm not sure. Maybe this used to be used instead of status=approved? Or the UI for removing from spam but not approving has been since removed?...
			// status=approved: Unspamming via the REST API (Calypso) or...
			( isset( $_POST['status'] ) && in_array( $_POST['status'], array( 'spam', 'unspam', 'approved' ) ) )
			// spam=1: Clicking "Spam" underneath a comment in wp-admin and allowing the AJAX request to happen.
			|| ( isset( $_POST['spam'] ) && (int) $_POST['spam'] == 1 )
			// unspam=1: Clicking "Not Spam" underneath a comment in wp-admin and allowing the AJAX request to happen. Or, clicking "Undo" after marking something as spam.
			|| ( isset( $_POST['unspam'] ) && (int) $_POST['unspam'] == 1 )
			// comment_status=spam/unspam: It's unclear where this is happening.
			|| ( isset( $_POST['comment_status'] ) && in_array( $_POST['comment_status'], array( 'spam', 'unspam' ) ) )
			// action=spam: Choosing "Mark as Spam" from the Bulk Actions dropdown in wp-admin (or the "Spam it" link in notification emails).
			// action=unspam: Choosing "Not Spam" from the Bulk Actions dropdown in wp-admin.
			// action=spamcomment: Following the "Spam" link below a comment in wp-admin (not allowing AJAX request to happen).
			// action=unspamcomment: Following the "Not Spam" link below a comment in wp-admin (not allowing AJAX request to happen).
			|| ( isset( $_GET['action'] ) && in_array( $_GET['action'], array( 'spam', 'unspam', 'spamcomment', 'unspamcomment' ) ) )
			// action=editedcomment: Editing a comment via wp-admin (and possibly changing its status).
			|| ( isset( $_POST['action'] ) && in_array( $_POST['action'], array( 'editedcomment' ) ) )
			// for=jetpack: Moderation via the WordPress app, Calypso, anything powered by the Jetpack connection.
			|| ( isset( $_GET['for'] ) && ( 'jetpack' == $_GET['for'] ) && ( ! defined( 'IS_WPCOM' ) || ! IS_WPCOM ) )
			// Certain WordPress.com API requests
			|| ( defined( 'REST_API_REQUEST' ) && REST_API_REQUEST )
			// WordPress.org REST API requests
			|| ( defined( 'REST_REQUEST' ) && REST_REQUEST )
		) {
			if ( $new_status == 'spam' && ( $old_status == 'approved' || $old_status == 'unapproved' || ! $old_status ) ) {
				return self::submit_spam_comment( $comment->comment_ID );
			} elseif ( $old_status == 'spam' && ( $new_status == 'approved' || $new_status == 'unapproved' ) ) {
				return self::submit_nonspam_comment( $comment->comment_ID );
			}
		}

self::update_comment_history( $comment->comment_ID, '', 'status-' . $new_status );
	}

public static function submit_spam_comment( $comment_id ) {
		global $wpdb, $current_user, $current_site;

$comment_id = (int) $comment_id;

$comment = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->comments} WHERE comment_ID = %d", $comment_id ), ARRAY_A );

if ( ! $comment ) {
			// it was deleted
			return;
		}

if ( 'spam' != $comment['comment_approved'] ) {
			return;
		}

self::update_comment_history( $comment_id, '', 'report-spam' );

// If the user hasn't configured Akismet, there's nothing else to do at this point.
		if ( ! self::get_api_key() ) {
			return;
		}

// use the original version stored in comment_meta if available
		$as_submitted = self::sanitize_comment_as_submitted( get_comment_meta( $comment_id, 'akismet_as_submitted', true ) );

if ( $as_submitted && is_array( $as_submitted ) && isset( $as_submitted['comment_content'] ) ) {
			$comment = array_merge( $comment, $as_submitted );
		}

$comment['blog']         = get_option( 'home' );
		$comment['blog_lang']    = get_locale();
		$comment['blog_charset'] = get_option( 'blog_charset' );
		$comment['permalink']    = get_permalink( $comment['comment_post_ID'] );

if ( is_object( $current_user ) ) {
			$comment['reporter'] = $current_user->user_login;
		}

if ( is_object( $current_site ) ) {
			$comment['site_domain'] = $current_site->domain;
		}

$comment['user_role'] = '';
		if ( ! empty( $comment['user_ID'] ) ) {
			$comment['user_role'] = self::get_user_roles( $comment['user_ID'] );
		}

if ( self::is_test_mode() ) {
			$comment['is_test'] = 'true';
		}

$post = get_post( $comment['comment_post_ID'] );

if ( ! is_null( $post ) ) {
			$comment['comment_post_modified_gmt'] = $post->post_modified_gmt;
		}

$comment['comment_check_response'] = self::last_comment_check_response( $comment_id );

$comment = apply_filters( 'akismet_request_args', $comment, 'submit-spam' );

$response = self::http_post( self::build_query( $comment ), 'submit-spam' );

update_comment_meta( $comment_id, 'akismet_user_result', 'true' );

if ( $comment['reporter'] ) {
			update_comment_meta( $comment_id, 'akismet_user', $comment['reporter'] );
		}

do_action( 'akismet_submit_spam_comment', $comment_id, $response[1] );
	}

public static function submit_nonspam_comment( $comment_id ) {
		global $wpdb, $current_user, $current_site;

$comment_id = (int) $comment_id;

$comment = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->comments} WHERE comment_ID = %d", $comment_id ), ARRAY_A );

if ( ! $comment ) {
			// it was deleted
			return;
		}

self::update_comment_history( $comment_id, '', 'report-ham' );

// If the user hasn't configured Akismet, there's nothing else to do at this point.
		if ( ! self::get_api_key() ) {
			return;
		}

// use the original version stored in comment_meta if available
		$as_submitted = self::sanitize_comment_as_submitted( get_comment_meta( $comment_id, 'akismet_as_submitted', true ) );

if ( $as_submitted && is_array( $as_submitted ) && isset( $as_submitted['comment_content'] ) ) {
			$comment = array_merge( $comment, $as_submitted );
		}

if ( is_object( $current_user ) ) {
			$comment['reporter'] = $current_user->user_login;
		}

if ( is_object( $current_site ) ) {
			$comment['site_domain'] = $current_site->domain;
		}

if ( ! empty( $comment['user_ID'] ) ) {
			$comment['user_role'] = self::get_user_roles( $comment['user_ID'] );
		}

if ( self::is_test_mode() ) {
			$comment['is_test'] = 'true';
		}

$post = get_post( $comment['comment_post_ID'] );

if ( ! is_null( $post ) ) {
			$comment['comment_post_modified_gmt'] = $post->post_modified_gmt;
		}

$comment['comment_check_response'] = self::last_comment_check_response( $comment_id );

$comment = apply_filters( 'akismet_request_args', $comment, 'submit-ham' );

$response = self::http_post( self::build_query( $comment ), 'submit-ham' );

update_comment_meta( $comment_id, 'akismet_user_result', 'false' );

if ( $comment['reporter'] ) {
			update_comment_meta( $comment_id, 'akismet_user', $comment['reporter'] );
		}

do_action( 'akismet_submit_nonspam_comment', $comment_id, $response[1] );
	}

public static function cron_recheck() {
		global $wpdb;

$api_key = self::get_api_key();

$status = self::verify_key( $api_key );
		if ( get_option( 'akismet_alert_code' ) || $status == 'invalid' ) {
			// since there is currently a problem with the key, reschedule a check for 6 hours hence
			wp_schedule_single_event( time() + 21600, 'akismet_schedule_cron_recheck' );
			do_action( 'akismet_scheduled_recheck', 'key-problem-' . get_option( 'akismet_alert_code' ) . '-' . $status );
			return false;
		}

delete_option( 'akismet_available_servers' );

$comment_errors = $wpdb->get_col( "SELECT comment_id FROM {$wpdb->commentmeta} WHERE meta_key = 'akismet_error'	LIMIT 100" );

foreach ( (array) $comment_errors as $comment_id ) {
			// if the comment no longer exists, or is too old, remove the meta entry from the queue to avoid getting stuck
			$comment = get_comment( $comment_id );

if (
				! $comment // Comment has been deleted
				|| strtotime( $comment->comment_date_gmt ) < strtotime( '-15 days' ) // Comment is too old.
				|| $comment->comment_approved !== '0' // Comment is no longer in the Pending queue
				) {
				delete_comment_meta( $comment_id, 'akismet_error' );
				delete_comment_meta( $comment_id, 'akismet_delay_moderation_email' );
				delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' );
				delete_comment_meta( $comment_id, 'akismet_schedule_approval_fallback' );
				delete_comment_meta( $comment_id, 'akismet_schedule_email_fallback' );
				continue;
			}

add_comment_meta( $comment_id, 'akismet_rechecking', true );
			$status = self::check_db_comment( $comment_id, 'retry' );

$event = '';
			if ( $status == 'true' ) {
				$event = 'cron-retry-spam';
			} elseif ( $status == 'false' ) {
				$event = 'cron-retry-ham';
			}

// If we got back a legit response then update the comment history
			// other wise just bail now and try again later.  No point in
			// re-trying all the comments once we hit one failure.
			if ( ! empty( $event ) ) {
				delete_comment_meta( $comment_id, 'akismet_error' );
				self::update_comment_history( $comment_id, '', $event );
				update_comment_meta( $comment_id, 'akismet_result', $status );
				// make sure the comment status is still pending.  if it isn't, that means the user has already moved it elsewhere.
				$comment = get_comment( $comment_id );
				if ( $comment && 'unapproved' == wp_get_comment_status( $comment_id ) ) {
					if ( $status == 'true' ) {
						wp_spam_comment( $comment_id );
					} elseif ( $status == 'false' ) {
						// comment is good, but it's still in the pending queue.  depending on the moderation settings
						// we may need to change it to approved.
						if ( check_comment( $comment->comment_author, $comment->comment_author_email, $comment->comment_author_url, $comment->comment_content, $comment->comment_author_IP, $comment->comment_agent, $comment->comment_type ) ) {
							wp_set_comment_status( $comment_id, 1 );
						} elseif ( get_comment_meta( $comment_id, 'akismet_delayed_moderation_email', true ) ) {
							wp_new_comment_notify_moderator( $comment_id );
							wp_new_comment_notify_postauthor( $comment_id );
						}
					}
				}

delete_comment_meta( $comment_id, 'akismet_delay_moderation_email' );
				delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' );
			} else {
				// If this comment has been pending moderation for longer than MAX_DELAY_BEFORE_MODERATION_EMAIL,
				// send a moderation email now.
				if ( ( intval( gmdate( 'U' ) ) - strtotime( $comment->comment_date_gmt ) ) < self::MAX_DELAY_BEFORE_MODERATION_EMAIL ) {
					delete_comment_meta( $comment_id, 'akismet_delay_moderation_email' );
					delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' );

wp_new_comment_notify_moderator( $comment_id );
					wp_new_comment_notify_postauthor( $comment_id );
				}

delete_comment_meta( $comment_id, 'akismet_rechecking' );
				wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' );
				do_action( 'akismet_scheduled_recheck', 'check-db-comment-' . $status );

return;
			}

delete_comment_meta( $comment_id, 'akismet_rechecking' );
		}

$remaining = $wpdb->get_var( "SELECT COUNT(*) FROM {$wpdb->commentmeta} WHERE meta_key = 'akismet_error'" );

if ( $remaining && ! wp_next_scheduled( 'akismet_schedule_cron_recheck' ) ) {
			wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' );
			do_action( 'akismet_scheduled_recheck', 'remaining' );
		}
	}

public static function fix_scheduled_recheck() {
		$future_check = wp_next_scheduled( 'akismet_schedule_cron_recheck' );
		if ( ! $future_check ) {
			return;
		}

if ( get_option( 'akismet_alert_code' ) > 0 ) {
			return;
		}

$check_range = time() + 1200;
		if ( $future_check > $check_range ) {
			wp_clear_scheduled_hook( 'akismet_schedule_cron_recheck' );
			wp_schedule_single_event( time() + 300, 'akismet_schedule_cron_recheck' );
			do_action( 'akismet_scheduled_recheck', 'fix-scheduled-recheck' );
		}
	}

public static function add_comment_nonce( $post_id ) {
		/**
		 * To disable the Akismet comment nonce, add a filter for the 'akismet_comment_nonce' tag
		 * and return any string value that is not 'true' or '' (empty string).
		 *
		 * Don't return boolean false, because that implies that the 'akismet_comment_nonce' option
		 * has not been set and that Akismet should just choose the default behavior for that
		 * situation.
		 */

if ( ! self::get_api_key() ) {
			return;
		}

$akismet_comment_nonce_option = apply_filters( 'akismet_comment_nonce', get_option( 'akismet_comment_nonce' ) );

if ( $akismet_comment_nonce_option == 'true' || $akismet_comment_nonce_option == '' ) {
			echo '<p style="display: none;">';
			wp_nonce_field( 'akismet_comment_nonce_' . $post_id, 'akismet_comment_nonce', false );
			echo '</p>';
		}
	}

public static function is_test_mode() {
		return defined( 'AKISMET_TEST_MODE' ) && AKISMET_TEST_MODE;
	}

public static function allow_discard() {
		if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) {
			return false;
		}
		if ( is_user_logged_in() ) {
			return false;
		}

return ( get_option( 'akismet_strictness' ) === '1' );
	}

public static function get_ip_address() {
		return isset( $_SERVER['REMOTE_ADDR'] ) ? $_SERVER['REMOTE_ADDR'] : null;
	}

/**
	 * Using the unique values that we assign, do we consider these two comments
	 * to be the same instance of a comment?
	 *
	 * The only fields that matter in $comment1 and $comment2 are akismet_guid and akismet_skipped_microtime.
	 * We set both of these during the comment-check call, and if the comment has been saved to the DB,
	 * we save them as comment meta and add them back into the comment array before comparing the comments.
	 *
	 * @param mixed $comment1 A comment object or array.
	 * @param mixed $comment2 A comment object or array.
	 * @return bool Whether the two comments should be treated as the same comment.
	 */
	private static function comments_match( $comment1, $comment2 ) {
		$comment1 = (array) $comment1;
		$comment2 = (array) $comment2;

if ( ! empty( $comment1['akismet_guid'] ) && ! empty( $comment2['akismet_guid'] ) ) {
			// If the comment got sent to the API and got a response, it will have a GUID.

return ( $comment1['akismet_guid'] == $comment2['akismet_guid'] );
		} else if ( ! empty( $comment1['akismet_skipped_microtime'] ) && ! empty( $comment2['akismet_skipped_microtime'] ) ) {
			// It won't have a GUID if it didn't get sent to the API because it matched the disallowed list,
			// but it should have a microtimestamp to use here for matching against the comment DB entry it matches.
			return ( strval( $comment1['akismet_skipped_microtime'] ) == strval( $comment2['akismet_skipped_microtime'] ) );
		}

return false;
	}

/**
	 * Does the supplied comment match the details of the one most recently stored in self::$last_comment?
	 *
	 * @param array $comment
	 * @return bool Whether the comment supplied as an argument is a match for the one we have stored in $last_comment.
	 */
	public static function matches_last_comment( $comment ) {
		if ( ! self::$last_comment ) {
			return false;
		}

return self::comments_match( $comment, self::$last_comment );
	}

/**
	 * Because of the order of operations, we don't always know the comment ID of the comment that we're checking,
	 * so we have to be able to match the comment we cached locally with the comment from the DB.
	 *
	 * @param int $comment_id
	 * @return bool Whether the comment represented by $comment_id is a match for the one we have stored in $last_comment.
	 */
	public static function matches_last_comment_by_id( $comment_id ) {
		return self::matches_last_comment( self::get_fields_for_comment_matching( $comment_id ) );
	}

/**
	 * Given a comment ID, retrieve the values that we use for matching comments together.
	 *
	 * @param int $comment_id
	 * @return array An array containing akismet_guid and akismet_skipped_microtime. Either or both may be falsy, but we hope that at least one is a string.
	 */
	public static function get_fields_for_comment_matching( $comment_id ) {
		return array(
			'akismet_guid' => get_comment_meta( $comment_id, 'akismet_guid', true ),
			'akismet_skipped_microtime' => get_comment_meta( $comment_id, 'akismet_skipped_microtime', true ),
		);
	}

private static function get_user_agent() {
		return isset( $_SERVER['HTTP_USER_AGENT'] ) ? $_SERVER['HTTP_USER_AGENT'] : null;
	}

private static function get_referer() {
		return isset( $_SERVER['HTTP_REFERER'] ) ? $_SERVER['HTTP_REFERER'] : null;
	}

// return a comma-separated list of role names for the given user
	public static function get_user_roles( $user_id ) {
		$comment_user = null;
		$roles        = false;

if ( ! class_exists( 'WP_User' ) ) {
			return false;
		}

if ( $user_id > 0 ) {
			$comment_user = new WP_User( $user_id );
			if ( isset( $comment_user->roles ) ) {
				$roles = implode( ',', $comment_user->roles );
			}
		}

if ( is_multisite() && is_super_admin( $user_id ) ) {
			if ( empty( $roles ) ) {
				$roles = 'super_admin';
			} else {
				$comment_user->roles[] = 'super_admin';
				$roles                 = implode( ',', $comment_user->roles );
			}
		}

return $roles;
	}

// filter handler used to return a spam result to pre_comment_approved
	public static function last_comment_status( $approved, $comment ) {
		if ( is_null( self::$last_comment_result ) ) {
			// We didn't have reason to store the result of the last check.
			return $approved;
		}

// Only do this if it's the correct comment.
		if ( ! self::matches_last_comment( $comment ) ) {
			self::log( "comment_is_spam mismatched comment, returning unaltered $approved" );
			return $approved;
		}

if ( 'trash' === $approved ) {
			// If the last comment we checked has had its approval set to 'trash',
			// then it failed the comment blacklist check. Let that blacklist override
			// the spam check, since users have the (valid) expectation that when
			// they fill out their blacklists, comments that match it will always
			// end up in the trash.
			return $approved;
		}

// bump the counter here instead of when the filter is added to reduce the possibility of overcounting
		if ( $incr = apply_filters( 'akismet_spam_count_incr', 1 ) ) {
			update_option( 'akismet_spam_count', get_option( 'akismet_spam_count' ) + $incr );
		}

return self::$last_comment_result;
	}

/**
	 * If Akismet is temporarily unreachable, we don't want to "spam" the blogger or post author
	 * with emails for comments that will be automatically cleared or spammed on the next retry.
	 *
	 * @param bool $maybe_notify Whether the notification email will be sent.
	 * @param int   $comment_id The ID of the relevant comment.
	 * @return bool Whether the notification email should still be sent.
	 */
	public static function disable_emails_if_unreachable( $maybe_notify, $comment_id ) {
		if ( $maybe_notify ) {
			if ( get_comment_meta( $comment_id, 'akismet_delay_moderation_email', true ) ) {
				self::log( 'Disabling notification email for comment #' . $comment_id );

update_comment_meta( $comment_id, 'akismet_delayed_moderation_email', true );
				delete_comment_meta( $comment_id, 'akismet_delay_moderation_email' );

// If we want to prevent the email from sending another time, we'll have to reset
				// the akismet_delay_moderation_email commentmeta.

return false;
			}
		}

return $maybe_notify;
	}

public static function _cmp_time( $a, $b ) {
		return $a['time'] > $b['time'] ? -1 : 1;
	}

public static function _get_microtime() {
		$mtime = explode( ' ', microtime() );
		return $mtime[1] + $mtime[0];
	}

/**
	 * Make a POST request to the Akismet API.
	 *
	 * @param string $request The body of the request.
	 * @param string $path The path for the request.
	 * @param string $ip The specific IP address to hit.
	 * @return array A two-member array consisting of the headers and the response body, both empty in the case of a failure.
	 */
	public static function http_post( $request, $path, $ip = null ) {

$akismet_ua = sprintf( 'WordPress/%s | Akismet/%s', $GLOBALS['wp_version'], constant( 'AKISMET_VERSION' ) );
		$akismet_ua = apply_filters( 'akismet_ua', $akismet_ua );

$host    = self::API_HOST;
		$api_key = self::get_api_key();

if ( $api_key ) {
			$request = add_query_arg( 'api_key', $api_key, $request );
		}

$http_host = $host;
		// use a specific IP if provided
		// needed by Akismet_Admin::check_server_connectivity()
		if ( $ip && long2ip( ip2long( $ip ) ) ) {
			$http_host = $ip;
		}

$http_args = array(
			'body'        => $request,
			'headers'     => array(
				'Content-Type' => 'application/x-www-form-urlencoded; charset=' . get_option( 'blog_charset' ),
				'Host'         => $host,
				'User-Agent'   => $akismet_ua,
			),
			'httpversion' => '1.0',
			'timeout'     => 15,
		);

$akismet_url = $http_akismet_url = "http://{$http_host}/1.1/{$path}";

/**
		 * Try SSL first; if that fails, try without it and don't try it again for a while.
		 */

$ssl = $ssl_failed = false;

// Check if SSL requests were disabled fewer than X hours ago.
		$ssl_disabled = get_option( 'akismet_ssl_disabled' );

if ( $ssl_disabled && $ssl_disabled < ( time() - 60 * 60 * 24 ) ) { // 24 hours
			$ssl_disabled = false;
			delete_option( 'akismet_ssl_disabled' );
		} elseif ( $ssl_disabled ) {
			do_action( 'akismet_ssl_disabled' );
		}

if ( ! $ssl_disabled && ( $ssl = wp_http_supports( array( 'ssl' ) ) ) ) {
			$akismet_url = set_url_scheme( $akismet_url, 'https' );

do_action( 'akismet_https_request_pre' );
		}

$response = wp_remote_post( $akismet_url, $http_args );

self::log( compact( 'akismet_url', 'http_args', 'response' ) );

if ( $ssl && is_wp_error( $response ) ) {
			do_action( 'akismet_https_request_failure', $response );

// Intermittent connection problems may cause the first HTTPS
			// request to fail and subsequent HTTP requests to succeed randomly.
			// Retry the HTTPS request once before disabling SSL for a time.
			$response = wp_remote_post( $akismet_url, $http_args );

self::log( compact( 'akismet_url', 'http_args', 'response' ) );

if ( is_wp_error( $response ) ) {
				$ssl_failed = true;

do_action( 'akismet_https_request_failure', $response );

do_action( 'akismet_http_request_pre' );

// Try the request again without SSL.
				$response = wp_remote_post( $http_akismet_url, $http_args );

self::log( compact( 'http_akismet_url', 'http_args', 'response' ) );
			}
		}

if ( is_wp_error( $response ) ) {
			do_action( 'akismet_request_failure', $response );

return array( '', '' );
		}

if ( $ssl_failed ) {
			// The request failed when using SSL but succeeded without it. Disable SSL for future requests.
			update_option( 'akismet_ssl_disabled', time() );

do_action( 'akismet_https_disabled' );
		}

$simplified_response = array( $response['headers'], $response['body'] );

$alert_code_check_paths = array(
			'verify-key',
			'comment-check',
			'get-stats',
		);

if ( in_array( $path, $alert_code_check_paths ) ) {
			self::update_alert( $simplified_response );
		}

return $simplified_response;
	}

// given a response from an API call like check_key_status(), update the alert code options if an alert is present.
	public static function update_alert( $response ) {
		$alert_option_prefix = 'akismet_alert_';
		$alert_header_prefix = 'x-akismet-alert-';
		$alert_header_names  = array(
			'code',
			'msg',
			'api-calls',
			'usage-limit',
			'upgrade-plan',
			'upgrade-url',
			'upgrade-type',
			'upgrade-via-support',
			'recommended-plan-name',
		);

foreach ( $alert_header_names as $alert_header_name ) {
			$value = null;
			if ( isset( $response[0][ $alert_header_prefix . $alert_header_name ] ) ) {
				$value = $response[0][ $alert_header_prefix . $alert_header_name ];
			}

$option_name = $alert_option_prefix . str_replace( '-', '_', $alert_header_name );
			if ( $value != get_option( $option_name ) ) {
				if ( ! $value ) {
					delete_option( $option_name );
				} else {
					update_option( $option_name, $value );
				}
			}
		}
	}

/**
	 * Mark akismet-frontend.js as deferred. Because nothing depends on it, it can run at any time
	 * after it's loaded, and the browser won't have to wait for it to load to continue
	 * parsing the rest of the page.
	 */
	public static function set_form_js_async( $tag, $handle, $src ) {
		if ( 'akismet-frontend' !== $handle ) {
			return $tag;
		}

return preg_replace( '/^<script /i', '<script defer ', $tag );
	}

public static function get_akismet_form_fields() {
		$fields = '';

$prefix = 'ak_';

// Contact Form 7 uses _wpcf7 as a prefix to know which fields to exclude from comment_content.
		if ( 'wpcf7_form_elements' === current_filter() ) {
			$prefix = '_wpcf7_ak_';
		}

$fields .= '<p style="display: none !important;" class="akismet-fields-container" data-prefix="' . esc_attr( $prefix ) . '">';
		$fields .= '<label>&#916;<textarea name="' . $prefix . 'hp_textarea" cols="45" rows="8" maxlength="100"></textarea></label>';

if ( ! function_exists( 'amp_is_request' ) || ! amp_is_request() ) {
			// Keep track of how many ak_js fields are in this page so that we don't re-use
			// the same ID.
			static $field_count = 0;

++$field_count;

$fields .= '<input type="hidden" id="ak_js_' . $field_count . '" name="' . $prefix . 'js" value="' . mt_rand( 0, 250 ) . '"/>';
			$fields .= '<script>document.getElementById( "ak_js_' . $field_count . '" ).setAttribute( "value", ( new Date() ).getTime() );</script>';
		}

$fields .= '</p>';

return $fields;
	}

public static function output_custom_form_fields( $post_id ) {
		if ( 'fluentform/form_element_start' === current_filter() && did_action( 'fluentform_form_element_start' ) ) {
			// Already did this via the legacy filter.
			return;
		}

// phpcs:ignore WordPress.Security.EscapeOutput
		echo self::get_akismet_form_fields();
	}

public static function inject_custom_form_fields( $html ) {
		$html = str_replace( '</form>', self::get_akismet_form_fields() . '</form>', $html );

return $html;
	}

public static function append_custom_form_fields( $html ) {
		$html .= self::get_akismet_form_fields();

return $html;
	}

/**
	 * Ensure that any Akismet-added form fields are included in the comment-check call.
	 *
	 * @param array $form
	 * @param array $data Some plugins will supply the POST data via the filter, since they don't
	 *                    read it directly from $_POST.
	 * @return array $form
	 */
	public static function prepare_custom_form_values( $form, $data = null ) {
		if ( 'fluentform/akismet_fields' === current_filter() && did_filter( 'fluentform_akismet_fields' ) ) {
			// Already updated the form fields via the legacy filter.
			return $form;
		}

if ( is_null( $data ) ) {
			// phpcs:ignore WordPress.Security.NonceVerification.Missing
			$data = $_POST;
		}

$prefix = 'ak_';

// Contact Form 7 uses _wpcf7 as a prefix to know which fields to exclude from comment_content.
		if ( 'wpcf7_akismet_parameters' === current_filter() ) {
			$prefix = '_wpcf7_ak_';
		}

foreach ( $data as $key => $val ) {
			if ( 0 === strpos( $key, $prefix ) ) {
				$form[ 'POST_ak_' . substr( $key, strlen( $prefix ) ) ] = $val;
			}
		}

return $form;
	}

private static function bail_on_activation( $message, $deactivate = true ) {
		?>
<!doctype html>
<html>
<head>
<meta charset="<?php bloginfo( 'charset' ); ?>" />
<style>
* {
	text-align: center;
	margin: 0;
	padding: 0;
	font-family: "Lucida Grande",Verdana,Arial,"Bitstream Vera Sans",sans-serif;
}
p {
	margin-top: 1em;
	font-size: 18px;
}
</style>
</head>
<body>
<p><?php echo esc_html( $message ); ?></p>
</body>
</html>
		<?php
		if ( $deactivate ) {
			$plugins = get_option( 'active_plugins' );
			$akismet = plugin_basename( AKISMET__PLUGIN_DIR . 'akismet.php' );
			$update  = false;
			foreach ( $plugins as $i => $plugin ) {
				if ( $plugin === $akismet ) {
					$plugins[ $i ] = false;
					$update        = true;
				}
			}

if ( $update ) {
				update_option( 'active_plugins', array_filter( $plugins ) );
			}
		}
		exit;
	}

public static function view( $name, array $args = array() ) {
		$args = apply_filters( 'akismet_view_arguments', $args, $name );

foreach ( $args as $key => $val ) {
			$$key = $val;
		}

$file = AKISMET__PLUGIN_DIR . 'views/' . basename( $name ) . '.php';

if ( file_exists( $file ) ) {
			include $file;
		}
	}

/**
	 * Attached to activate_{ plugin_basename( __FILES__ ) } by register_activation_hook()
	 *
	 * @static
	 */
	public static function plugin_activation() {
		if ( version_compare( $GLOBALS['wp_version'], AKISMET__MINIMUM_WP_VERSION, '<' ) ) {
			$message = '<strong>' .
				/* translators: 1: Current Akismet version number, 2: Minimum WordPress version number required. */
				sprintf( esc_html__( 'Akismet %1$s requires WordPress %2$s or higher.', 'akismet' ), AKISMET_VERSION, AKISMET__MINIMUM_WP_VERSION ) . '</strong> ' .
				/* translators: 1: WordPress documentation URL, 2: Akismet download URL. */
				sprintf( __( 'Please <a href="%1$s">upgrade WordPress</a> to a current version, or <a href="%2$s">downgrade to version 2.4 of the Akismet plugin</a>.', 'akismet' ), 'https://codex.wordpress.org/Upgrading_WordPress', 'https://wordpress.org/plugins/akismet' );

self::bail_on_activation( $message );
		} elseif ( ! empty( $_SERVER['SCRIPT_NAME'] ) && false !== strpos( $_SERVER['SCRIPT_NAME'], '/wp-admin/plugins.php' ) ) {
			add_option( 'Activated_Akismet', true );
		}
	}

/**
	 * Removes all connection options
	 *
	 * @static
	 */
	public static function plugin_deactivation() {
		self::deactivate_key( self::get_api_key() );

// Remove any scheduled cron jobs.
		$akismet_cron_events = array(
			'akismet_schedule_cron_recheck',
			'akismet_scheduled_delete',
		);

foreach ( $akismet_cron_events as $akismet_cron_event ) {
			$timestamp = wp_next_scheduled( $akismet_cron_event );

if ( $timestamp ) {
				wp_unschedule_event( $timestamp, $akismet_cron_event );
			}
		}
	}

/**
	 * Essentially a copy of WP's build_query but one that doesn't expect pre-urlencoded values.
	 *
	 * @param array $args An array of key => value pairs
	 * @return string A string ready for use as a URL query string.
	 */
	public static function build_query( $args ) {
		return _http_build_query( $args, '', '&' );
	}

/**
	 * Log debugging info to the error log.
	 *
	 * Enabled when WP_DEBUG_LOG is enabled (and WP_DEBUG, since according to
	 * core, "WP_DEBUG_DISPLAY and WP_DEBUG_LOG perform no function unless
	 * WP_DEBUG is true), but can be disabled via the akismet_debug_log filter.
	 *
	 * @param mixed $akismet_debug The data to log.
	 */
	public static function log( $akismet_debug ) {
		if ( apply_filters( 'akismet_debug_log', defined( 'WP_DEBUG' ) && WP_DEBUG && defined( 'WP_DEBUG_LOG' ) && WP_DEBUG_LOG && defined( 'AKISMET_DEBUG' ) && AKISMET_DEBUG ) ) {
			error_log( print_r( compact( 'akismet_debug' ), true ) );
		}
	}

/**
	 * Check pingbacks for spam before they're saved to the DB.
	 *
	 * @param string           $method The XML-RPC method that was called.
	 * @param array            $args This and the $server arg are marked as optional since plugins might still be
	 *                               calling do_action( 'xmlrpc_action', [...] ) without the arguments that were added in WP 5.7.
	 * @param wp_xmlrpc_server $server
	 */
	public static function pre_check_pingback( $method, $args = array(), $server = null ) {
		if ( $method !== 'pingback.ping' ) {
			return;
		}

/*
		 * $args looks like this:
		 *
		 * Array
		 * (
		 *     [0] => http://www.example.net/?p=1 // Site that created the pingback.
		 *     [1] => https://www.example.com/?p=2 // Post being pingback'd on this site.
		 * )
		 */

if ( ! is_null( $server ) && ! empty( $args[1] ) ) {
			$is_multicall    = false;
			$multicall_count = 0;

if ( 'system.multicall' === $server->message->methodName ) {
				$is_multicall    = true;
				$multicall_count = is_countable( $server->message->params ) ? count( $server->message->params ) : 0;
			}

$post_id = url_to_postid( $args[1] );

// If pingbacks aren't open on this post, we'll still check whether this request is part of a potential DDOS,
			// but indicate to the server that pingbacks are indeed closed so we don't include this request in the user's stats,
			// since the user has already done their part by disabling pingbacks.
			$pingbacks_closed = false;

$post = get_post( $post_id );

if ( ! $post || ! pings_open( $post ) ) {
				$pingbacks_closed = true;
			}

$comment = array(
				'comment_author_url'      => $args[0],
				'comment_post_ID'         => $post_id,
				'comment_author'          => '',
				'comment_author_email'    => '',
				'comment_content'         => '',
				'comment_type'            => 'pingback',
				'akismet_pre_check'       => '1',
				'comment_pingback_target' => $args[1],
				'pingbacks_closed'        => $pingbacks_closed ? '1' : '0',
				'is_multicall'            => $is_multicall,
				'multicall_count'         => $multicall_count,
			);

$comment = self::auto_check_comment( $comment, 'xml-rpc' );

if ( isset( $comment['akismet_result'] ) && 'true' == $comment['akismet_result'] ) {
				// Sad: tightly coupled with the IXR classes. Unfortunately the action provides no context and no way to return anything.
				$server->error( new IXR_Error( 0, 'Invalid discovery target' ) );

// Also note that if this was part of a multicall, a spam result will prevent the subsequent calls from being executed.
				// This is probably fine, but it raises the bar for what should be acceptable as a false positive.
			}
		}
	}

/**
	 * Ensure that we are loading expected scalar values from akismet_as_submitted commentmeta.
	 *
	 * @param mixed $meta_value
	 * @return mixed
	 */
	private static function sanitize_comment_as_submitted( $meta_value ) {
		if ( empty( $meta_value ) ) {
			return $meta_value;
		}

$meta_value = (array) $meta_value;

foreach ( $meta_value as $key => $value ) {
			if ( ! is_scalar( $value ) ) {
				unset( $meta_value[ $key ] );
			} else {
				// These can change, so they're not explicitly listed in comment_as_submitted_allowed_keys.
				if ( strpos( $key, 'POST_ak_' ) === 0 ) {
					continue;
				}

if ( ! isset( self::$comment_as_submitted_allowed_keys[ $key ] ) ) {
					unset( $meta_value[ $key ] );
				}
			}
		}

return $meta_value;
	}

public static function predefined_api_key() {
		if ( defined( 'WPCOM_API_KEY' ) ) {
			return true;
		}

return apply_filters( 'akismet_predefined_api_key', false );
	}

/**
	 * Controls the display of a privacy related notice underneath the comment
	 * form using the `akismet_comment_form_privacy_notice` option and filter
	 * respectively.
	 *
	 * Default is to not display the notice, leaving the choice to site admins,
	 * or integrators.
	 */
	public static function display_comment_form_privacy_notice() {
		if ( 'display' !== apply_filters( 'akismet_comment_form_privacy_notice', get_option( 'akismet_comment_form_privacy_notice', 'hide' ) ) ) {
			return;
		}

echo apply_filters(
			'akismet_comment_form_privacy_notice_markup',
			'<p class="akismet_comment_form_privacy_notice">' .
				wp_kses(
					sprintf(
						/* translators: %s: Akismet privacy URL */
						__( 'This site uses Akismet to reduce spam. <a href="%s" target="_blank" rel="nofollow noopener">Learn how your comment data is processed.</a>', 'akismet' ),
						'https://akismet.com/privacy/'
					),
					array(
						'a' => array(
							'href' => array(),
							'target' => array(),
							'rel' => array(),
						),
					)
				) .
			'</p>'
		);
	}

public static function load_form_js() {
		if (
			! is_admin()
			&& ( ! function_exists( 'amp_is_request' ) || ! amp_is_request() )
			&& self::get_api_key()
			) {
			wp_register_script( 'akismet-frontend', plugin_dir_url( __FILE__ ) . '_inc/akismet-frontend.js', array(), filemtime( plugin_dir_path( __FILE__ ) . '_inc/akismet-frontend.js' ), true );
			wp_enqueue_script( 'akismet-frontend' );
		}
	}

/**
	 * Add the form JavaScript when we detect that a supported form shortcode is being parsed.
	 */
	public static function load_form_js_via_filter( $return_value, $tag, $attr, $m ) {
		if ( in_array( $tag, array( 'contact-form', 'gravityform', 'contact-form-7', 'formidable', 'fluentform' ) ) ) {
			self::load_form_js();
		}

return $return_value;
	}

/**
	 * Was the last entry in the comment history created by Akismet?
	 *
	 * @param int $comment_id The ID of the comment.
	 * @return bool
	 */
	public static function last_comment_status_change_came_from_akismet( $comment_id ) {
		$history = self::get_comment_history( $comment_id );

if ( empty( $history ) ) {
			return false;
		}

$most_recent_history_event = $history[0];

if ( ! isset( $most_recent_history_event['event'] ) ) {
			return false;
		}

$akismet_history_events = array(
			'check-error',
			'cron-retry-ham',
			'cron-retry-spam',
			'check-ham',
			'check-ham-pending',
			'check-spam',
			'recheck-error',
			'recheck-ham',
			'recheck-spam',
			'webhook-ham',
			'webhook-spam',
		);

if ( in_array( $most_recent_history_event['event'], $akismet_history_events ) ) {
			return true;
		}

return false;
	}

/**
	 * Check the comment history to find out what the most recent comment-check
	 * response said about this comment.
	 *
	 * This value is then included in submit-ham and submit-spam requests to allow
	 * us to know whether the comment is actually a missed spam/ham or if it's
	 * just being reclassified after either never being checked or being mistakenly
	 * marked as ham/spam.
	 *
	 * @param int $comment_id The comment ID.
	 * @return string 'true', 'false', or an empty string if we don't have a record
	 *                of comment-check being called.
	 */
	public static function last_comment_check_response( $comment_id ) {
		$history = self::get_comment_history( $comment_id );

if ( $history ) {
			$history = array_reverse( $history );

foreach ( $history as $akismet_history_entry ) {
				// We've always been consistent in how history entries are formatted
				// but comment_meta is writable by everyone, so don't assume that all
				// entries contain the expected parts.

if ( ! is_array( $akismet_history_entry ) ) {
					continue;
				}

if ( ! isset( $akismet_history_entry['event'] ) ) {
					continue;
				}

if ( in_array(
					$akismet_history_entry['event'],
					array(
						'recheck-spam',
						'check-spam',
						'cron-retry-spam',
						'webhook-spam',
						'webhook-spam-noaction',
					),
					true
				) ) {
					return 'true';
				} elseif ( in_array(
					$akismet_history_entry['event'],
					array(
						'recheck-ham',
						'check-ham',
						'cron-retry-ham',
						'webhook-ham',
						'webhook-ham-noaction',
					),
					true
				) ) {
					return 'false';
				}
			}
		}

return '';
	}
}

cmd: