From 0656526d434bd6e16a01e0e2c1918e00e6cb21b2 Mon Sep 17 00:00:00 2001
From: DL6ER <dl6er@dl6er.de>
Date: Fri, 23 Dec 2016 12:49:54 +0100
Subject: [PATCH] Add blocking version of pihole.log tailing

---
 header.php           |  6 ++++++
 js/pihole/taillog.js | 30 ++++++++++++++++++++++++++++++
 php/taillog.php      | 23 +++++++++++++++++++++++
 taillog.php          | 16 ++++++++++++++++
 4 files changed, 75 insertions(+)
 create mode 100644 js/pihole/taillog.js
 create mode 100644 php/taillog.php
 create mode 100644 taillog.php

diff --git a/header.php b/header.php
index 39146967..eb5a0940 100644
--- a/header.php
+++ b/header.php
@@ -353,6 +353,12 @@
                         <i class="fa fa-search"></i> <span>Query adlists</span>
                     </a>
                 </li>
+                <!-- Query adlists -->
+                <li>
+                    <a href="taillog.php">
+                        <i class="fa fa-list-ul"></i> <span>Tail pihole.log</span>
+                    </a>
+                </li>
                 <!-- Toggle -->
                 <?php
                 if ($pistatus == "1") {
diff --git a/js/pihole/taillog.js b/js/pihole/taillog.js
new file mode 100644
index 00000000..0ae63f41
--- /dev/null
+++ b/js/pihole/taillog.js
@@ -0,0 +1,30 @@
+var source;
+function eventsource() {
+    var ta = $("#output");
+    source = new EventSource("php/taillog.php");
+
+    ta.html("");
+    ta.show();
+
+    source.addEventListener("message", function(e) {
+        if(e.data.indexOf("Ctrl-C") === -1)
+        {
+            // Hide the "Press Ctrl-C to exit" message
+            ta.append(e.data);
+        }
+
+    }, false);
+
+    // Will be called when script has finished
+    source.addEventListener("error", function(e) {
+        source.close();
+    }, false);
+}
+
+$(function(){
+    eventsource();
+});
+
+$(window).unload(function(){
+  source.close();
+});
diff --git a/php/taillog.php b/php/taillog.php
new file mode 100644
index 00000000..210397d4
--- /dev/null
+++ b/php/taillog.php
@@ -0,0 +1,23 @@
+<?php
+require "password.php";
+if(!$auth) die("Not authorized");
+
+ob_end_flush();
+ini_set("output_buffering", "0");
+ob_implicit_flush(true);
+header('Content-Type: text/event-stream');
+header('Cache-Control: no-cache');
+
+function echoEvent($datatext) {
+    echo "data: ".implode("\ndata: ", explode("\n", $datatext))."\n\n";
+}
+
+// echoEvent("***START***");
+
+$proc = popen("sudo pihole -t", 'r');
+while (!feof($proc)) {
+    echoEvent(fread($proc, 4096));
+}
+
+// echoEvent("***END***");
+?>
diff --git a/taillog.php b/taillog.php
new file mode 100644
index 00000000..fd328837
--- /dev/null
+++ b/taillog.php
@@ -0,0 +1,16 @@
+<?php
+    require "header.php";
+?>
+<!-- Title -->
+<div class="page-header">
+    <h1>Output the last lines of the pihole.log file (live)</h1>
+</div>
+
+<pre id="output" style="width: 100%; height: 100%;" hidden="true"></pre>
+
+<?php
+    require "footer.php";
+?>
+
+
+<script src="js/pihole/taillog.js"></script>