Changes concerning the date the gravity list was last changed. Used in the webinterface dashboard as a tooltip, and now also available in the API (both PHP and FTL). Function was moved to new file /scripts/pi-hole/php/gravity.php to keep things neat and to avoid duplicate code.

scripts/pi-hole/php/gravity.php

@@ -0,0 +1,51 @@
+<?php
+/* Pi-hole: A black hole for Internet advertisements
+*  (c) 2017 Pi-hole, LLC (https://pi-hole.net)
+*  Network-wide ad blocking via your own hardware.
+*
+*  This file is copyright under the latest version of the EUPL.
+*  Please see LICENSE file for your rights under this license. */
+
+function gravity_last_update($raw = false){
+	/*
+	@walter-exit | April 23rd, 2018:
+	Checks when the gravity list was last updated, if it exists at all.
+	Returns the info in human-readable format for use on the dashboard,
+	or raw for use by the API.
+	*/
+	$gravitylist = "/etc/pihole/gravity.list";
+	if (file_exists($gravitylist)){
+		$date_file_created_unix = filemtime($gravitylist);
+		$date_file_created = date_create("@".$date_file_created_unix);
+		$date_now = date_create("now");
+	    $gravitydiff = date_diff($date_file_created,$date_now);
+	    if($raw){
+			$output = array(
+				"file_exists"=> true,
+				"absolute" => $date_file_created_unix,
+				"relative" => array(
+					"days" =>  $gravitydiff->format("%a"),
+					"hours" =>  $gravitydiff->format("%H"),
+					"minutes" =>  $gravitydiff->format("%I"),
+				)
+			);
+		}else{
+			if($gravitydiff->d > 1){
+		        $output = $gravitydiff->format("Blocking list updated %a days, %H:%I ago");
+		    }elseif($gravitydiff->d == 1){
+		        $output = $gravitydiff->format("Blocking list updated one day, %H:%I ago");
+		    }else{
+		        $output = $gravitydiff->format("Blocking list updated %H:%I ago");
+		    }
+		}
+	}else{
+		if($raw){
+			$output = array("file_exists"=>false);
+		}else{
+			$output = "Blocking list not found";	
+		}
+	}
+	return $output;
+}
+
+?>