/index.php

<?php
/*
MINIGAL NANO
- A PHP/HTML/CSS based image gallery script

This script and included files are subject to licensing from Creative Commons (http://creativecommons.org/licenses/by-sa/2.5/)
You may use, edit and redistribute this script, as long as you pay tribute to the original author by NOT removing the linkback to www.minigal.dk ("Powered by MiniGal Nano x.x.x")

MiniGal Nano is created by Thomas Rybak

Copyright 2010 by Thomas Rybak
Support: www.minigal.dk
Community: www.minigal.dk/forum

Please enjoy this free script!
*/

// Do not edit below this section unless you know what you are doing!


//-----------------------
// Debug stuff
//-----------------------
	error_reporting(E_ERROR);
//	error_reporting(E_ALL);
//	error_reporting(0);
/*
	$mtime = microtime();
	$mtime = explode(" ",$mtime);
	$mtime = $mtime[1] + $mtime[0];
	$starttime = $mtime;
*/

$version = "0.3.5";
ini_set("memory_limit","256M");

require("config_default.php");
include("config.php");
//-----------------------
// DEFINE VARIABLES
//-----------------------
$page_navigation = "";
$breadcrumb_navigation = "";
$thumbnails = "";
$new = "";
$images = "";
$exif_data = "";
$messages = "";

//-----------------------
// PHP ENVIRONMENT CHECK
//-----------------------
if (!function_exists('exif_read_data') && $display_exif == 1) {
	$display_exif = 0;
    $messages = "Error: PHP EXIF is not available. Set &#36;display_exif = 0; in config.php to remove this message";
}

//-----------------------
// FUNCTIONS
//-----------------------
function is_directory($filepath) {
	// $filepath must be the entire system path to the file
	if (!@opendir($filepath)) return FALSE;
	else {
		return TRUE;
		closedir($filepath);
	}
}

function padstring($name, $length) {
	global $label_max_length;
	if (!isset($length)) $length = $label_max_length;
	if (strlen($name) > $length) {
      return substr($name,0,$length) . "...";
   } else return $name;
}
function getfirstImage($dirname) {
	$imageName = false;
	$ext = array("jpg", "png", "jpeg", "gif", "JPG", "PNG", "GIF", "JPEG");
	if($handle = opendir($dirname))
	{
		while(false !== ($file = readdir($handle)))
		{
			$lastdot = strrpos($file, '.');
			$extension = substr($file, $lastdot + 1);
			if ($file[0] != '.' && in_array($extension, $ext)) break;
		}
		$imageName = $file;
		closedir($handle);
	}
	return($imageName);
}
function readEXIF($file) {
		$exif_data = "";
		$exif_idf0 = exif_read_data ($file,'IFD0' ,0 );
        $emodel = $exif_idf0['Model'];

        $efocal = $exif_idf0['FocalLength'];
        list($x,$y) = split('/', $efocal);
        $efocal = round($x/$y,0);
       
        $exif_exif = exif_read_data ($file,'EXIF' ,0 );
        $eexposuretime = $exif_exif['ExposureTime'];
       
        $efnumber = $exif_exif['FNumber'];
        list($x,$y) = split('/', $efnumber);
        $efnumber = round($x/$y,0);

        $eiso = $exif_exif['ISOSpeedRatings'];
               
        $exif_date = exif_read_data ($file,'IFD0' ,0 );
        $edate = $exif_date['DateTime'];
		if (strlen($emodel) > 0 OR strlen($efocal) > 0 OR strlen($eexposuretime) > 0 OR strlen($efnumber) > 0 OR strlen($eiso) > 0) $exif_data .= "::";
        if (strlen($emodel) > 0) $exif_data .= "$emodel";
        if ($efocal > 0) $exif_data .= " | $efocal" . "mm";
        if (strlen($eexposuretime) > 0) $exif_data .= " | $eexposuretime" . "s";
        if ($efnumber > 0) $exif_data .= " | f$efnumber";
        if (strlen($eiso) > 0) $exif_data .= " | ISO $eiso";
        return($exif_data);
}
function checkpermissions($file) {
	global $messages;
	if (substr(decoct(fileperms($file)), -1, strlen(fileperms($file))) < 4 OR substr(decoct(fileperms($file)), -3,1) < 4) $messages = "At least one file or folder has wrong permissions. Learn how to <a href='http://minigal.dk/faq-reader/items/how-do-i-change-file-permissions-chmod.html' target='_blank'>set file permissions</a>";
}

//-----------------------
// CHECK FOR NEW VERSION
//-----------------------
if (ini_get('allow_url_fopen') == "1") {
	$file = @fopen ("http://www.minigal.dk/minigalnano_version.php", "r");
	$server_version = fgets ($file, 1024);
	if (strlen($server_version) == 5 ) { //If string retrieved is exactly 5 chars then continue
		if (version_compare($server_version, $version, '>')) $messages = "MiniGal Nano $server_version is available! <a href='http://www.minigal.dk/minigal-nano.html' target='_blank'>Get it now</a>";
	}
	fclose($file);
}

if (!defined("GALLERY_ROOT")) define("GALLERY_ROOT", "");
$thumbdir = rtrim('photos' . "/" .$_REQUEST["dir"],"/");
$thumbdir = str_replace("/..", "", $thumbdir); // Prevent looking at any up-level folders
$currentdir = GALLERY_ROOT . $thumbdir;

//-----------------------
// READ FILES AND FOLDERS
//-----------------------
$files = array();
$dirs = array();
 if ($handle = opendir($currentdir))
 {
	while (false !== ($file = readdir($handle)))
    {
// 1. LOAD FOLDERS
		if (is_directory($currentdir . "/" . $file))
			{ 
				if ($file != "." && $file != ".." )
				{
					checkpermissions($currentdir . "/" . $file); // Check for correct file permission
					// Set thumbnail to folder.jpg if found:
					if (file_exists("$currentdir/" . $file . "/folder.jpg"))
					{
						$dirs[] = array(
							"name" => $file,
							"date" => filemtime($currentdir . "/" . $file . "/folder.jpg"),
							"html" => "<li><a href='?dir=" .ltrim($_GET['dir'] . "/" . $file, "/") . "'><em>" . padstring($file, $label_max_length) . "</em><span></span><img src='" . GALLERY_ROOT . "createthumb.php?filename=$currentdir/" . $file . "/folder.jpg&amp;size=$thumb_size'  alt='$label_loading' /></a></li>");
					}  else
					{
					// Set thumbnail to first image found (if any):
						unset ($firstimage);
						$firstimage = getfirstImage("$currentdir/" . $file);
						if ($firstimage != "") {
						$dirs[] = array(
							"name" => $file,
							"date" => filemtime($currentdir . "/" . $file),
							"html" => "<li><a href='?dir=" . ltrim($_GET['dir'] . "/" . $file, "/") . "'><em>" . padstring($file, $label_max_length) . "</em><span></span><img src='" . GALLERY_ROOT . "createthumb.php?filename=$thumbdir/" . $file . "/" . $firstimage . "&amp;size=$thumb_size'  alt='$label_loading' /></a></li>");
						} else {
						// If no folder.jpg or image is found, then display default icon:
							$dirs[] = array(
								"name" => $file,
								"date" => filemtime($currentdir . "/" . $file),
								"html" => "<li><a href='?dir=" . ltrim($_GET['dir'] . "/" . $file, "/") . "'><em>" . padstring($file) . "</em><span></span><img src='" . GALLERY_ROOT . "images/folder_" . strtolower($folder_color) . ".png' width='$thumb_size' height='$thumb_size' alt='$label_loading' /></a></li>");
						}
					}
				}
			}	

// 2. LOAD CAPTIONS
if (file_exists($currentdir ."/captions.txt"))
{
	$file_handle = fopen($currentdir ."/captions.txt", "rb");
	while (!feof($file_handle) ) 
	{	
		$line_of_text = fgets($file_handle);
		$parts = explode('/n', $line_of_text);
		foreach($parts as $img_capts)
		{
			list($img_filename, $img_caption) = explode('|', $img_capts);	
			$img_captions[$img_filename] = $img_caption;
		}
	}
	fclose($file_handle);
}

// 3. LOAD FILES
	        	if ($file != "." && $file != ".." && $file != "folder.jpg")
		  		{
		  			// JPG, GIF and PNG
		  			if (preg_match("/.jpg$|.gif$|.png$/i", $file))
		  			{
						//Read EXIF
						if ($display_exif == 1) $img_captions[$file] .= readEXIF($currentdir . "/" . $file);

						checkpermissions($currentdir . "/" . $file);
			  			$files[] = array (
			  				"name" => $file,
							"date" => filemtime($currentdir . "/" . $file),
							"size" => filesize($currentdir . "/" . $file),
				  			"html" => "<li><a href='" . $currentdir . "/" . $file . "' rel='lightbox[billeder]' title='$img_captions[$file]'><span></span><img src='" . GALLERY_ROOT . "createthumb.php?filename=" . $thumbdir . "/" . $file . "&amp;size=$thumb_size' alt='$label_loading' /></a></li>");
		  			}
					// Other filetypes
					$extension = "";
		        	if (preg_match("/.pdf$/i", $file)) $extension = "PDF"; // PDF
		        	if (preg_match("/.zip$/i", $file)) $extension = "ZIP"; // ZIP archive
		        	if (preg_match("/.rar$|.r[0-9]{2,}/i", $file)) $extension = "RAR"; // RAR Archive
		        	if (preg_match("/.tar$/i", $file)) $extension = "TAR"; // TARball archive
		        	if (preg_match("/.gz$/i", $file)) $extension = "GZ"; // GZip archive
		        	if (preg_match("/.doc$|.docx$/i", $file)) $extension = "DOCX"; // Word
		        	if (preg_match("/.ppt$|.pptx$/i", $file)) $extension = "PPTX"; //Powerpoint
		        	if (preg_match("/.xls$|.xlsx$/i", $file)) $extension = "XLXS"; // Excel
		        			        	
		        	if ($extension != "")
			  		{
		  				$files[] = array (
		  					"name" => $file,
							"date" => filemtime($currentdir . "/" . $file),
							"size" => filesize($currentdir . "/" . $file),
			  				"html" => "<li><a href='" . $currentdir . "/" . $file . "' title='$file'><em-pdf>" . padstring($file, 20) . "</em-pdf><span></span><img src='" . GALLERY_ROOT . "images/filetype_" . $extension . ".png' width='$thumb_size' height='$thumb_size' alt='$file' /></a></li>");
        			}
     			}   		
	}
  closedir($handle);
  } else die("ERROR: Could not open $currentdir for reading!");

//-----------------------
// SORT FILES AND FOLDERS
//-----------------------
if (sizeof($dirs) > 0) 
{
	foreach ($dirs as $key => $row)
	{
		if($row["name"] == "") unset($dirs[$key]); //Delete empty array entries
		$name[$key] = strtolower($row['name']);
		$date[$key] = strtolower($row['date']);
	}	
	if (strtoupper($sortdir_folders) == "DESC") array_multisort($$sorting_folders, SORT_DESC, $name, SORT_DESC, $dirs);
	else array_multisort($$sorting_folders, SORT_ASC, $name, SORT_ASC, $dirs);
}
if (sizeof($files) > 0)
{
	foreach ($files as $key => $row)
	{
		if($row["name"] == "") unset($files[$key]); //Delete empty array entries
		$name[$key] = strtolower($row['name']);
		$date[$key] = strtolower($row['date']);
		$size[$key] = strtolower($row['size']);
	}
	if (strtoupper($sortdir_files) == "DESC") array_multisort($$sorting_files, SORT_DESC, $name, SORT_ASC, $files);
	else array_multisort($$sorting_files, SORT_ASC, $name, SORT_ASC, $files);
}

//-----------------------
// OFFSET DETERMINATION
//-----------------------
	$offset_start = ($_GET["page"] * $thumbs_pr_page) - $thumbs_pr_page;
	if (!isset($_GET["page"])) $offset_start = 0;
	$offset_end = $offset_start + $thumbs_pr_page;
	if ($offset_end > sizeof($dirs) + sizeof($files)) $offset_end = sizeof($dirs) + sizeof($files);

	if ($_GET["page"] == "all")
	{
		$offset_start = 0;
		$offset_end = sizeof($dirs) + sizeof($files);
	}

//-----------------------
// PAGE NAVIGATION
//-----------------------
if (!isset($_GET["page"])) $_GET["page"] = 1;
if (sizeof($dirs) + sizeof($files) > $thumbs_pr_page)
{
	$page_navigation .= "$label_page ";
	for ($i=1; $i <= ceil((sizeof($files) + sizeof($dirs)) / $thumbs_pr_page); $i++)
	{
		if ($_GET["page"] == $i)
			$page_navigation .= "$i";
			else
				$page_navigation .= "<a href='?dir=" . $_GET["dir"] . "&amp;page=" . ($i) . "'>" . $i . "</a>";
		if ($i != ceil((sizeof($files) + sizeof($dirs)) / $thumbs_pr_page)) $page_navigation .= " | ";
	}
	//Insert link to view all images
	if ($_GET["page"] == "all") $page_navigation .= " | $label_all";
	else $page_navigation .= " | <a href='?dir=" . $_GET["dir"] . "&amp;page=all'>$label_all</a>";
}

//-----------------------
// BREADCRUMB NAVIGATION
//-----------------------
if ($_GET['dir'] != "")
{
	$breadcrumb_navigation .= "<a href='?dir='>" . $label_home . "</a> > ";
	$navitems = explode("/", $_REQUEST['dir']);
	for($i = 0; $i < sizeof($navitems); $i++)
	{
		if ($i == sizeof($navitems)-1) $breadcrumb_navigation .= $navitems[$i];
		else
		{
			$breadcrumb_navigation .= "<a href='?dir=";
			for ($x = 0; $x <= $i; $x++)
			{
				$breadcrumb_navigation .= $navitems[$x];
				if ($x < $i) $breadcrumb_navigation .= "/";
			}
			$breadcrumb_navigation .= "'>" . $navitems[$i] . "</a> > ";
		}
	}
} else $breadcrumb_navigation .= $label_home;

//Include hidden links for all images BEFORE current page so lightbox is able to browse images on different pages
for ($y = 0; $y < $offset_start - sizeof($dirs); $y++)
{	
	$breadcrumb_navigation .= "<a href='" . $currentdir . "/" . $files[$y]["name"] . "' rel='lightbox[billeder]' class='hidden' title='" . $img_captions[$files[$y]["name"]] . "'></a>";
}

//-----------------------
// DISPLAY FOLDERS
//-----------------------
if (count($dirs) + count($files) == 0) {
	$thumbnails .= "<li>$label_noimages</li>"; //Display 'no images' text
	if($currentdir == "photos") $messages = "It looks like you have just installed MiniGal Nano. Please run the <a href='system_check.php'>system check tool</a>";
}
$offset_current = $offset_start;
for ($x = $offset_start; $x < sizeof($dirs) && $x < $offset_end; $x++)
{
	$offset_current++;
	$thumbnails .= $dirs[$x]["html"];
}

//-----------------------
// DISPLAY FILES
//-----------------------
for ($i = $offset_start - sizeof($dirs); $i < $offset_end && $offset_current < $offset_end; $i++)
{
	if ($i >= 0)
	{
		$offset_current++;
		$thumbnails .= $files[$i]["html"];
	}
}

//Include hidden links for all images AFTER current page so lightbox is able to browse images on different pages
for ($y = $i; $y < sizeof($files); $y++)
{	
	$page_navigation .= "<a href='" . $currentdir . "/" . $files[$y]["name"] . "' rel='lightbox[billeder]'  class='hidden' title='" . $img_captions[$files[$y]["name"]] . "'></a>";
}

//-----------------------
// OUTPUT MESSAGES
//-----------------------
if ($messages != "") {
$messages = "<div id=\"topbar\">" . $messages . " <a href=\"#\" onclick=\"document.getElementById('topbar').style.display = 'none';\";><img src=\"images/close.png\" /></a></div>";
}

//PROCESS TEMPLATE FILE
	if(GALLERY_ROOT != "") $templatefile = GALLERY_ROOT . "templates/integrate.html";
	else $templatefile = "templates/" . $templatefile . ".html";
	if(!$fd = fopen($templatefile, "r"))
	{
		echo "Template $templatefile not found!";
		exit();
	}
	else
	{
		$template = fread ($fd, filesize ($templatefile));
		fclose ($fd);
		$template = stripslashes($template);
		$template = preg_replace("/<% title %>/", $title, $template);
		$template = preg_replace("/<% messages %>/", $messages, $template);
		$template = preg_replace("/<% author %>/", $author, $template);
		$template = preg_replace("/<% gallery_root %>/", GALLERY_ROOT, $template);
		$template = preg_replace("/<% images %>/", "$images", $template);
		$template = preg_replace("/<% thumbnails %>/", "$thumbnails", $template);
		$template = preg_replace("/<% breadcrumb_navigation %>/", "$breadcrumb_navigation", $template);
		$template = preg_replace("/<% page_navigation %>/", "$page_navigation", $template);
		$template = preg_replace("/<% bgcolor %>/", "$backgroundcolor", $template);
		$template = preg_replace("/<% gallery_width %>/", "$gallery_width", $template);
		$template = preg_replace("/<% version %>/", "$version", $template);
		echo "$template";
	}

//-----------------------
//Debug stuff
//-----------------------
/*   $mtime = microtime();
   $mtime = explode(" ",$mtime);
   $mtime = $mtime[1] + $mtime[0];
   $endtime = $mtime;
   $totaltime = ($endtime - $starttime);
   echo "This page was created in ".$totaltime." seconds";
*/
?>