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This script presents the latest lines of your LAMP server log files, emulating the tail() function. Layout is nice and responsive. I chose to include inline the CSS and JS to have the ease-of-use of a single, "drop-in", file. If your site is hosted on a Gandi Simplehosting server, it should just work out of the box.
<?php
/*
@name Server Logs Viewer
@description View the latest lines of your Nginx server logs in your browser.
@author Luis Medina (larmedina@outlook.com)
@date 17.06.2016
Based on original script by Alexandre Plennevaux (pixeline.be)
*/
/* Absolute local path to your server 'log' directory */
//define('LOG_PATH','/var/log');
//define('LOG_PATH','/var/log/httpd');
//define('LOG_PATH','/var/log/apache2');
define('LOG_PATH','/var/log/nginx');
define('DISPLAY_REVERSE',true); // true = displays log entries starting with the most recent
//define('DIRECTORY_SEPARATOR','/');
function get_log_files($dir, &$results = array()) {
$files = scandir($dir);
foreach($files as $key => $value){
$path = realpath($dir.DIRECTORY_SEPARATOR.$value);
if(!is_dir($path)) {
$files_list[] = $path;
}
elseif ($value != "." && $value != "..") {
$dirs_list[] = $path;
}
}
foreach ($files_list as $path) {
preg_match("/^.*\/(\S+)$/", $path, $matches);
$name = $matches[1];
$results[$dir][$name] = array('name' => $name, 'path' => $path);
}
if ( isset($dirs_list) ) {
foreach ($dirs_list as $path) {
get_log_files($path, $results);
}
}
return $results;
}
/* Files that you want to have access to, inside the LOG_PATH directory */
$files = get_log_files(LOG_PATH);
// Set a Smart default to 1:
ksort($files);
foreach ($files as $dir_name => $file_array) {
ksort($file_array);
foreach ($file_array as $key => $val) {
$default = $key;
$log_files[$key] = $val;
}
}
/*
// separate files from dirs:
foreach ($files as $key => $val) {
foreach ($val as $log_name => $log_array) {
$log_files[$log_name] = $log_array;
}
}
*/
$log =(!isset($_GET['p'])) ? $default : urldecode($_GET['p']);
$lines =(!isset($_GET['lines'])) ? '10': $_GET['lines'];
//$file = $log_files[$log]['path'];
$file = $log;
$title = substr($log, (strrpos($log, '/')+1));
function tail($filename, $lines = 50, $buffer = 4096)
{
// Open the file
$f = fopen($filename, "rb");
// Jump to last character
fseek($f, -1, SEEK_END);
// Read it and adjust line number if necessary
// (Otherwise the result would be wrong if file doesn't end with a blank line)
if(fread($f, 1) != "\n") $lines -= 1;
// Start reading
$output = '';
$chunk = '';
// While we would like more
while(ftell($f) > 0 && $lines >= 0)
{
// Figure out how far back we should jump
$seek = min(ftell($f), $buffer);
// Do the jump (backwards, relative to where we are)
fseek($f, -$seek, SEEK_CUR);
// Read a chunk and prepend it to our output
$output = ($chunk = fread($f, $seek)).$output;
// Jump back to where we started reading
fseek($f, -mb_strlen($chunk, '8bit'), SEEK_CUR);
// Decrease our line counter
$lines -= substr_count($chunk, "\n");
}
// While we have too many lines
// (Because of buffer size we might have read too many)
while($lines++ < 0)
{
// Find first newline and remove all text before that
$output = substr($output, strpos($output, "\n") + 1);
}
// Close file and return
fclose($f);
return $output;
}
?><!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Logs viewer</title>
<meta name="description" content="Gandi SimpleHosting Server Logs gives an easy access to the (sometimes very heavy) server's last logs, typically on a Gandi SimpleHosting server.">
<meta name="author" content="pixeline">
<meta http-equiv="refresh" content="15">
<style type="text/css" media="screen">
/*!
Pure v0.6.0
Copyright 2014 Yahoo! Inc. All rights reserved.
Licensed under the BSD License.
https://github.com/yahoo/pure/blob/master/LICENSE.md
*/
/*!
normalize.css v^3.0 | MIT License | git.io/normalize
Copyright (c) Nicolas Gallagher and Jonathan Neal
*/
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body {
color: #777;
}
/*
Add transition to containers so they can push in and out.
*/
#layout,
#menu,
.menu-link {
-webkit-transition: all 0.2s ease-out;
-moz-transition: all 0.2s ease-out;
-ms-transition: all 0.2s ease-out;
-o-transition: all 0.2s ease-out;
transition: all 0.2s ease-out;
}
/*
This is the parent `<div>` that contains the menu and the content area.
*/
#layout {
position: relative;
padding-left: 0;
}
#layout.active {
position: relative;
left: 150px;
}
#layout.active #menu {
left: 150x;
width: 150px;
}
#layout.active .menu-link {
left: 150px;
}
/*
The content `<div>` is where all your content goes.
*/
.content {
margin: 0 auto;
padding: 0 2em;
max-width: 1000px;
margin-bottom: 50px;
line-height: 1.6em;
}
.header {
margin: 0;
color: #333;
text-align: center;
// padding: 2.5em 2em 0;
border-bottom: 1px solid #eee;
}
.header h1 {
margin: 0.2em 0;
font-size: 3em;
font-weight: 300;
}
.header h2 {
font-weight: 300;
color: #ccc;
padding: 0;
margin-top: 0;
}
.content-subhead {
margin: 50px 0 20px 0;
font-weight: 300;
color: #888;
}
li {
font-size: 12px;
}
/*
The `#menu` `<div>` is the parent `<div>` that contains the `.pure-menu` that
appears on the left side of the page.
*/
#menu {
margin-left: -200px; /* "#menu" width */
width: 200px;
position: fixed;
top: 0;
left: 0;
bottom: 0;
z-index: 1000; /* so the menu or its navicon stays above all content */
background: #191818;
overflow-y: auto;
-webkit-overflow-scrolling: touch;
}
/*
All anchors inside the menu should be styled like this.
*/
#menu a {
color: #999;
border: none;
font-size:.8rem;
line-height: 1rem;
}
/*
Remove all background/borders, since we are applying them to #menu.
*/
#menu .pure-menu,
#menu .pure-menu ul {
border: none;
background: transparent;
}
/*
Add that light border to separate items into groups.
*/
#menu .pure-menu ul,
#menu .pure-menu .menu-item-divided {
border-top: 1px solid #333;
}
/*
Change color of the anchor links on hover/focus.
*/
#menu .pure-menu li a:hover,
#menu .pure-menu li a:focus {
background: #333;
color: #FFF;
}
/*
This styles the selected menu item `<li>`.
*/
#menu .pure-menu-selected,
#menu .pure-menu-heading {
background: #1f8dd6;
}
/*
This styles a link within a selected menu item `<li>`.
*/
#menu .pure-menu-selected a{
color: #ffffff;
}
/*
This styles the menu heading.
*/
#menu .pure-menu-heading {
font-size: 110%;
font-weight: 300;
letter-spacing: 0.1em;
color: #fff;
margin-top: 0;
padding: 0.5em 0.8em;
background:transparent;
}
.credits{border-top:1px solid #DDD; color:#CCC;font-size:.8rem;text-align: center;margin-top:50px}
.credits a {color:#CCC;}
/* -- Dynamic Button For Responsive Menu -------------------------------------*/
/*
The button to open/close the Menu is custom-made and not part of Pure. Here's
how it works:
*/
/*
`.menu-link` represents the responsive menu toggle that shows/hides on
small screens.
*/
.menu-link {
position: fixed;
display: block; /* show this only on small screens */
top: 0;
left: 0; /* "#menu width" */
background: #000;
background: rgba(0,0,0,0.7);
font-size: 10px; /* change this value to increase/decrease button size */
z-index: 10;
width: 2em;
height: auto;
padding: 2.1em 1.6em;
}
.menu-link:hover,
.menu-link:focus {
background: #000;
}
.menu-link span {
position: relative;
display: block;
}
.menu-link span,
.menu-link span:before,
.menu-link span:after {
background-color: #fff;
width: 100%;
height: 0.2em;
}
.menu-link span:before,
.menu-link span:after {
position: absolute;
margin-top: -0.6em;
content: " ";
}
.menu-link span:after {
margin-top: 0.6em;
}
/* -- Responsive Styles (Media Queries) ------------------------------------- */
/*
Hides the menu at `48em`, but modify this based on your app's needs.
*/
@media (min-width: 48em) {
.header,
.content {
padding-left: 2em;
padding-right: 2em;
}
#layout {
padding-left: 200px; /* left col width "#menu" */
left: 0;
}
#menu {
left: 200px;
}
.menu-link {
position: fixed;
left: 200px;
display: none;
}
#layout.active .menu-link {
left: 200px;
}
}
</style>
</head>
<body>
<div id="layout">
<!-- Menu toggle -->
<a href="#menu" id="menuLink" class="pure-menu-heading">
<!-- Hamburger icon -->
<span></span>
</a>
<div id="menu">
<div class="pure-menu pure-menu-open">
<a href="<?php echo $_SERVER['PHP_SELF']?>" class="pure-menu-heading">Server Logs</a>
<ul>
<?php
// Generate a menu
foreach ($files as $dir => $files_array) {
echo '<li>'.$dir.'</li>';
echo '<ul>';
foreach($files_array as $k=>$f){
if(!is_file($f['path'])){
// File does not exist, remove it from the array, so it does not appear in the menu.
unset($files_array[$k]);
continue;
}
$active = ($f['path'] == $log) ? 'class="pure-menu-selected"':'';
echo '<li '.$active.'><a href="?p='.urlencode($f['path']).'&lines='.$lines.'">'.$f['name'].'</a></li>';
}
echo '</ul>';
}
?>
</ul>
</div>
</div>
<div id="main">
<div class="header">
<!-- <h3><?php echo $title;?></h3> -->
<p>The last <?php echo $lines ?> lines of <?php echo $file ?>.</br>
<form action="" method="get"> How many lines to display?
<input type="hidden" name="p" value="<?php echo $log ?>">
<select name="lines" onchange="this.form.submit()">
<option value="10" <?php echo ($lines=='10') ? 'selected':'' ?>>10</option>
<option value="25" <?php echo ($lines=='25') ? 'selected':'' ?>>25</option>
<option value="50" <?php echo ($lines=='50') ? 'selected':'' ?>>50</option>
<option value="100" <?php echo ($lines=='100') ? 'selected':'' ?>>100</option>
<option value="500" <?php echo ($lines=='500') ? 'selected':'' ?>>500</option>
<option value="1000" <?php echo ($lines=='1000') ? 'selected':'' ?>>1000</option>
</select>
</form></p>
</div>
<div class="content">
<code><pre style="font-size:14px;font-family:monospace;color:black;" wrap><ol reversed>
<?php
$output = tail($file, $lines);
$output = explode("\n", $output);
if(DISPLAY_REVERSE){
// Latest first
$output = array_reverse($output);
}
$output = implode('<li>',$output);
echo $output;
?>
</ol></pre>
</code>
<footer>
<p class="credits"><a href="http://www.luisarmandomedina.com">Script by Luis Armando Medina</a>, <a href="//pixeline.be">Original script by pixeline</a>, thanks to <a href="//purecss.io/">purecss.io</a></p>
</footer>
</div>
</div>
</div>
<script>
(function (window, document) {
var layout = document.getElementById('layout'),
menu = document.getElementById('menu'),
menuLink = document.getElementById('menuLink');
function toggleClass(element, className) {
var classes = element.className.split(/\s+/),
length = classes.length,
i = 0;
for(; i < length; i++) {
if (classes[i] === className) {
classes.splice(i, 1);
break;
}
}
// The className is not found
if (length === classes.length) {
classes.push(className);
}
element.className = classes.join(' ');
}
menuLink.onclick = function (e) {
var active = 'active';
e.preventDefault();
toggleClass(layout, active);
toggleClass(menu, active);
toggleClass(menuLink, active);
};
}(this, this.document));
</script>
</body>
</html>
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