1 files changed, 68 insertions, 0 deletions
diff --git a/plugins/jetpack/vendor/automattic/jetpack-status/src/class-status.php b/plugins/jetpack/vendor/automattic/jetpack-status/src/class-status.php
index f87ca9af..5a299056 100644
--- a/plugins/jetpack/vendor/automattic/jetpack-status/src/class-status.php
+++ b/plugins/jetpack/vendor/automattic/jetpack-status/src/class-status.php
@@ -80,4 +80,72 @@ class Status {
 		}
 		return 1 === (int) $some_users;
 	}
+
+	/**
+	 * If is a staging site.
+	 *
+	 * @todo Add IDC detection to a package.
+	 *
+	 * @return bool
+	 */
+	public function is_staging_site() {
+		$is_staging = false;
+
+		$known_staging = array(
+			'urls'      => array(
+				'#\.staging\.wpengine\.com$#i', // WP Engine.
+				'#\.staging\.kinsta\.com$#i',   // Kinsta.com.
+				'#\.stage\.site$#i',            // DreamPress.
+			),
+			'constants' => array(
+				'IS_WPE_SNAPSHOT',      // WP Engine.
+				'KINSTA_DEV_ENV',       // Kinsta.com.
+				'WPSTAGECOACH_STAGING', // WP Stagecoach.
+				'JETPACK_STAGING_MODE', // Generic.
+			),
+		);
+		/**
+		 * Filters the flags of known staging sites.
+		 *
+		 * @since 3.9.0
+		 *
+		 * @param array $known_staging {
+		 *     An array of arrays that each are used to check if the current site is staging.
+		 *     @type array $urls      URLs of staging sites in regex to check against site_url.
+		 *     @type array $constants PHP constants of known staging/developement environments.
+		 *  }
+		 */
+		$known_staging = apply_filters( 'jetpack_known_staging', $known_staging );
+
+		if ( isset( $known_staging['urls'] ) ) {
+			foreach ( $known_staging['urls'] as $url ) {
+				if ( preg_match( $url, site_url() ) ) {
+					$is_staging = true;
+					break;
+				}
+			}
+		}
+
+		if ( isset( $known_staging['constants'] ) ) {
+			foreach ( $known_staging['constants'] as $constant ) {
+				if ( defined( $constant ) && constant( $constant ) ) {
+					$is_staging = true;
+				}
+			}
+		}
+
+		// Last, let's check if sync is erroring due to an IDC. If so, set the site to staging mode.
+		if ( ! $is_staging && method_exists( 'Jetpack', 'validate_sync_error_idc_option' ) && \Jetpack::validate_sync_error_idc_option() ) {
+			$is_staging = true;
+		}
+
+		/**
+		 * Filters is_staging_site check.
+		 *
+		 * @since 3.9.0
+		 *
+		 * @param bool $is_staging If the current site is a staging site.
+		 */
+		return apply_filters( 'jetpack_is_staging_site', $is_staging );
+	}
 }