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File name : Cdn_AdminNotes.php

Content :

<?php
namespace W3TC;

class Cdn_AdminNotes {
	/**
	 *
	 *
	 * @param Config  $config
	 * @return array
	 */
	public function w3tc_notes( $notes ) {
		$config = Dispatcher::config();
		$state = Dispatcher::config_state();

$page = Util_Request::get_string( 'page' );

if ( !Cdn_Util::is_engine_mirror( $config->get_string( 'cdn.engine' ) ) ) {
			/**
			 * Show notification after theme change
			 */
			if ( $state->get_boolean( 'cdn.show_note_theme_changed' ) ) {
				$notes['cdn_theme_changed'] = sprintf(
					__( 'The active theme has changed, please %s now to ensure proper operation. %s',
						'w3-total-cache' ),
					Util_Ui::button_popup(
						__( 'upload active theme files', 'w3-total-cache' ),
						'cdn_export',
						'cdn_export_type=theme' ),
					Util_Ui::button_hide_note2( array(
							'w3tc_default_config_state' => 'y',
							'key' => 'cdn.show_note_theme_changed',
							'value' => 'false' ) ) );
			}

/**
			 * Show notification after WP upgrade
			 */
			if ( $state->get_boolean( 'cdn.show_note_wp_upgraded' ) ) {
				$notes['cdn_wp_upgraded'] = sprintf(
					__( 'Upgraded WordPress? Please %s files now to ensure proper operation. %s',
						'w3-total-cache' ),
					Util_Ui::button_popup( 'upload wp-includes', 'cdn_export',
						'cdn_export_type=includes' ),
					Util_Ui::button_hide_note2( array(
							'w3tc_default_config_state' => 'y',
							'key' => 'cdn.show_note_wp_upgraded',
							'value' => 'false' ) ) );
			}

/**
			 * Show notification after CDN enable
			 */
			if ( $state->get_boolean( 'cdn.show_note_cdn_upload' ) ||
				$state->get_boolean( 'cdn.show_note_cdn_reupload' ) ) {
				$cdn_upload_buttons = array();

if ( $config->get_boolean( 'cdn.includes.enable' ) ) {
					$cdn_upload_buttons[] = Util_Ui::button_popup(
						'wp-includes', 'cdn_export', 'cdn_export_type=includes' );
				}

if ( $config->get_boolean( 'cdn.theme.enable' ) ) {
					$cdn_upload_buttons[] = Util_Ui::button_popup(
						'theme files', 'cdn_export', 'cdn_export_type=theme' );
				}

if ( $config->get_boolean( 'minify.enabled' ) &&
					$config->get_boolean( 'cdn.minify.enable' ) &&
					!$config->get_boolean( 'minify.auto' ) ) {
					$cdn_upload_buttons[] = Util_Ui::button_popup(
						'minify files', 'cdn_export',
						'cdn_export_type=minify' );
				}

if ( $config->get_boolean( 'cdn.custom.enable' ) ) {
					$cdn_upload_buttons[] = Util_Ui::button_popup(
						'custom files', 'cdn_export', 'cdn_export_type=custom' );
				}

if ( $state->get_boolean( 'cdn.show_note_cdn_upload' ) ) {
					$notes[] = sprintf(
						__( 'Make sure to %s and upload the %s, files to the <acronym title="Content Delivery Network">CDN</acronym> to ensure proper operation. %s',
							'w3-total-cache' ),
						Util_Ui::button_popup( 'export the media library',
							'cdn_export_library' ),
						implode( ', ', $cdn_upload_buttons ),
						Util_Ui::button_hide_note2( array(
								'w3tc_default_config_state' => 'y',
								'key' => 'cdn.show_note_cdn_upload',
								'value' => 'false' ) ) );
				}

if ( $state->get_boolean( 'cdn.show_note_cdn_reupload' ) ) {
					$notes[] = sprintf(
						__( 'Settings that affect Browser Cache settings for files hosted by the CDN have been changed. To apply the new settings %s and %s. %s',
							'w3-total-cache' ),
						Util_Ui::button_popup(
							__( 'export the media library', 'w3-total-cache' ),
							'cdn_export_library' ),
						implode( ', ', $cdn_upload_buttons ),
						Util_Ui::button_hide_note2( array(
								'w3tc_default_config_state' => 'y',
								'key' => 'cdn.show_note_cdn_reupload',
								'value' => 'false' ) ) );
				}
			}
		}

if ( $config->get_string( 'cdn.engine' ) == 'maxcdn' &&
			!$state->get_boolean( 'cdn.hide_note_maxcdn_whitelist_ip' ) &&
			$state->get_integer( 'track.maxcdn_authorize' ) == 0 &&
			$config->get_string( 'cdn.' . $config->get_string( 'cdn.engine' ) .'.authorization_key' ) ) {
			$notes[] = sprintf(
				__( 'Make sure to whitelist your servers IPs. Follow the instructions on %s. The IP for this server is %s. %s', 'w3-total-cache' ),
				'<a href="http://support.maxcdn.com/tutorials/how-to-whitelist-your-server-ip-to-use-the-api/">MaxCDN</a>',
				$_SERVER['SERVER_ADDR'],
				Util_Ui::button_hide_note2( array(
						'w3tc_default_config_state' => 'y',
						'key' => 'cdn.hide_note_maxcdn_whitelist_ip',
						'value' => 'true' ) ) );
		}

/**
		 * Check CURL extension
		 */
		if ( !$state->get_boolean( 'cdn.hide_note_no_curl' ) &&
			!function_exists( 'curl_init' ) ) {
			$notes[] = sprintf(
				__( 'The CURL PHP extension is not available. Please install it to enable S3 or CloudFront functionality. %s',
					'w3-total-cache' ),
				Util_Ui::button_hide_note2( array(
						'w3tc_default_config_state' => 'y',
						'key' => 'cdn.hide_note_no_curl',
						'value' => 'true' ) ) );
		}

return $notes;
	}

function w3tc_errors( $errors ) {
		$c = Dispatcher::config();
		$state = Dispatcher::config_state();
		$cdn_engine = $c->get_string( 'cdn.engine' );

if ( Cdn_Util::is_engine_push( $cdn_engine ) ) {
			/**
			 * Show notification if upload queue is not empty
			 */
			try {
				if ( !( $error = get_transient( 'w3tc_cdn_error' ) ) &&
					!$this->_is_queue_empty() ) {
					$errors['cdn_unsuccessful_queue'] = sprintf(
						__( 'The %s has unresolved errors. Empty the queue to restore normal operation.',
							'w3-total-cache' ),
						Util_Ui::button_popup(
							__( 'unsuccessful transfer queue', 'w3-total-cache' ), 'cdn_queue' ) );
				} elseif ( $error ) {
					$errors['cdn_generic'] = $error;
				}
			} catch ( \Exception $ex ) {
				$errors[] = $ex->getMessage();
				set_transient( 'w3tc_cdn_error', $ex->getMessage(), 30 );
			}

/**
			 * Check upload settings
			 */
			$upload_info = Util_Http::upload_info();

if ( !$upload_info ) {
				$upload_path = get_option( 'upload_path' );
				$upload_path = trim( $upload_path );

if ( empty( $upload_path ) ) {
					$upload_path = WP_CONTENT_DIR . '/uploads';

$errors['cdn_uploads_folder_empty'] = sprintf(
						__( 'The uploads directory is not available. Default WordPress directories will be created: %s.',
							'w3-total-cache' ),
						$upload_path );
				}

if ( !Util_Environment::is_wpmu() ) {
					$errors['cdn_uploads_folder_not_found'] = sprintf(
						__( 'The uploads path found in the database (%s) is inconsistent with the actual path. Please manually adjust the upload path either in miscellaneous settings or if not using a custom path %s automatically to resolve the issue.',
							'w3-total-cache' ),
						$upload_path,
						Util_Ui::button_link( __( 'update the path', 'w3-total-cache' ),
							Util_Ui::url( array(
									'w3tc_config_update_upload_path' => 'y' ) ) ) );
				}
			}
		}

/**
		 * Check CDN settings
		 */
		$error = '';
		switch ( true ) {
		case ( $cdn_engine == 'ftp' && !count( $c->get_array( 'cdn.ftp.domain' ) ) ):
			$errors['cdn_ftp_empty'] = __( 'A configuration issue prevents <acronym title="Content Delivery Network">CDN</acronym> from working:
 The "Replace default hostname with"
 field cannot be empty. Enter <acronym
 title="Content Delivery Network">CDN</acronym>
 provider hostname <a href="?page=w3tc_cdn#configuration">here</a>.
 (This is the hostname used in order to view objects
 in a browser.)', 'w3-total-cache' );
			break;

case ( $cdn_engine == 's3' && ( $c->get_string( 'cdn.s3.key' ) == '' || $c->get_string( 'cdn.s3.secret' ) == '' || $c->get_string( 'cdn.s3.bucket' ) == '' ) ):
			$error = __( 'The "Access key", "Secret key" and "Bucket" fields cannot be empty.', 'w3-total-cache' );
			break;

case ( $cdn_engine == 'cf' && ( $c->get_string( 'cdn.cf.key' ) == '' || $c->get_string( 'cdn.cf.secret' ) == '' || $c->get_string( 'cdn.cf.bucket' ) == '' || ( $c->get_string( 'cdn.cf.id' ) == '' && !count( $c->get_array( 'cdn.cf.cname' ) ) ) ) ):
			$error = __( 'The "Access key", "Secret key", "Bucket" and "Replace default hostname with" fields cannot be empty.', 'w3-total-cache' );
			break;

case ( $cdn_engine == 'cf2' && ( $c->get_string( 'cdn.cf2.key' ) == '' || $c->get_string( 'cdn.cf2.secret' ) == '' || ( $c->get_string( 'cdn.cf2.id' ) == '' && !count( $c->get_array( 'cdn.cf2.cname' ) ) ) ) ):
			$error = __( 'The "Access key", "Secret key" and "Replace default hostname with" fields cannot be empty.', 'w3-total-cache' );
			break;

case ( $cdn_engine == 'rscf' && ( $c->get_string( 'cdn.rscf.user' ) == '' || $c->get_string( 'cdn.rscf.key' ) == '' || $c->get_string( 'cdn.rscf.container' ) == '' ) ):
			$error = __( 'The "Username", "API key", "Container" and "Replace default hostname with" fields cannot be empty.', 'w3-total-cache' );
			break;

case ( $cdn_engine == 'azure' && ( $c->get_string( 'cdn.azure.user' ) == '' || $c->get_string( 'cdn.azure.key' ) == '' || $c->get_string( 'cdn.azure.container' ) == '' ) ):
			$error = __( 'The "Account name", "Account key" and "Container" fields cannot be empty.', 'w3-total-cache' );
			break;

case ( $cdn_engine == 'mirror' && !count( $c->get_array( 'cdn.mirror.domain' ) ) ):
			$error = __( 'The "Replace default hostname with" field cannot be empty.', 'w3-total-cache' );
			break;

case ( $cdn_engine == 'maxcdn' ):
			$fields = array();
			if ( $c->get_string( 'cdn.maxcdn.authorization_key' ) == '' )
				$fields[] = '"' . __( 'Authorization key', 'w3-total-cache' ) . '"';

if ( !count( $c->get_array( 'cdn.maxcdn.domain' ) ) )
				$fields[] = '"' . __( 'Replace default hostname with', 'w3-total-cache' ) . '"';

if ( $fields ) {
				$error = sprintf( __( 'The %s field(s) cannot be empty.', 'w3-total-cache' ),
					implode( __( ' and ', 'w3-total-cache' ), $fields ) );
			}

if ( $c->get_string( 'cdn.maxcdn.authorization_key' ) != '' &&
				sizeof( explode( '+', $c->get_string( 'cdn.maxcdn.authorization_key' ) ) ) != 3 )
				$error .= __( 'The "Authorization key" is not correct.', 'w3-total-cache' );
			elseif ( $c->get_integer( 'cdn.maxcdn.zone_id', 0 ) <= 0 )
				$error .= __( 'You need to select / create a pull zone.', 'w3-total-cache' );

break;

case ( $cdn_engine == 'cotendo' && !count( $c->get_array( 'cdn.cotendo.domain' ) ) ):
			$error = __( 'The "Replace default hostname with" field cannot be empty.', 'w3-total-cache' );
			break;

case ( $cdn_engine == 'edgecast' && !count( $c->get_array( 'cdn.edgecast.domain' ) ) ):
			$error = __( 'The "Replace default hostname with" field cannot be empty.', 'w3-total-cache' );
			break;

case ( $cdn_engine == 'att' && !count( $c->get_array( 'cdn.att.domain' ) ) ):
			$error = __( 'The "Replace default hostname with" field cannot be empty.', 'w3-total-cache' );
			break;

case ( $cdn_engine == 'akamai' && !count( $c->get_array( 'cdn.akamai.domain' ) ) ):
			$error = 'The "Replace default hostname with" field cannot be empty.';
			break;
		}

if ( $error ) {
			$errors['cdn_not_configured'] = __( 'A configuration issue prevents <acronym title="Content Delivery Network">CDN</acronym> from working: ', 'w3-total-cache' ) . $error . __( ' <a href="?page=w3tc_cdn#configuration">Specify it here</a>.', 'w3-total-cache' );
		}

return $errors;
	}

/**
	 * Returns true if upload queue is empty
	 *
	 * @return bool
	 * @throws Exception
	 */
	private function _is_queue_empty() {
		global $wpdb;
		$wpdb->hide_errors();
		$sql = sprintf( 'SELECT COUNT(*) FROM %s', $wpdb->base_prefix . W3TC_CDN_TABLE_QUEUE );
		$result = $wpdb->get_var( $sql );
		if ( ( $error = $wpdb->last_error ) ) {
			if ( strpos( $error, "doesn't exist" ) !== false ) {
				$url = is_network_admin() ? network_admin_url( 'admin.php?page=w3tc_install' ) : admin_url( 'admin.php?page=w3tc_install' );
				throw new \Exception( sprintf(
						__( 'Encountered issue with CDN: %s. See %s for instructions of creating correct table.', 'w3-total-cache' ),
						$wpdb->last_error,
						'<a href="' . $url . '">' . __( 'Install page', 'w3-total-cache' ) . '</a>' ) );
			}
			else
				throw new \Exception( sprintf( __( 'Encountered issue with CDN: %s.', 'w3-total-cache' ), $wpdb->last_error ) );
		}
		return $result == 0;
	}
}

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