gallery.php

<?php

session_start();

require("set_paths.php");

include_once("caption_functions.php");

$tag1="";
$tag2="";

// Check POST action for write caption
if ( $_POST['action'] == 'write_caption' ){
  # if ( ! authorise_user('write_caption') ) continue;
  $gallery = $_SESSION['gallery'];
  $dirkey = $_SESSION['dirkey'];
  $filekey = $_SESSION['filekey'];

  include_once("$imagedata/".$_SESSION['gallery']);
  write_caption($gallery, $dirkey, $filekey, $_POST['caption']);
  header("Location: gallery.php?gallery=$gallery&dirkey=$dirkey&filekey=$filekey&action=display_image&size=700");
  exit;
}

# Override session vars with GET vars.
# Not secure - try to hard code each key
foreach ( array_keys($_GET) as $key ) {
  $_SESSION[$key] = $_GET[$key];
}

# Secret edit parameter:
if ( isset($_GET['edit']) ){
  $_SESSION['edit'] = $_GET['edit'];
}
if ( $_GET['edit'] == "off" ) unset($_SESSION['edit']);

# Image ref parameters
if ( isset($_GET['filekey']) ){
  $_SESSION['filekey'] = $_GET['filekey'];
}
elseif ( isset($_POST['filekey']) ){
  $_SESSION['filekey'] = $_POST['filekey'];
}
$filekey = $_SESSION['filekey'];

if ( isset($_GET['dirkey']) ){
  $_SESSION['dirkey'] = $_GET['dirkey'];
}
elseif ( isset($_POST['dirkey']) ){
  $_SESSION['dirkey'] = $_POST['dirkey'];
}
$dirkey = $_SESSION['dirkey'];

unset( $_SESSION['size'] );
unset( $_SESSION['xsize'] ); 
unset( $_SESSION['ysize'] );

if ( isset($_GET['xsize']) || isset($_GET['ysize']) ) {
  // Fixed sizing requested
  $xsize = $_GET['xsize'];
  $ysize = $_GET['ysize'];
}
elseif ( isset($_GET['size']) ){ 
  // Auto sizing requested
  $size = $_GET['size'];
}

if (isset($_GET['gallery'])){
  $_SESSION['gallery'] = $_GET['gallery'];
}
elseif (isset($_POST['gallery'])){
  $_SESSION['gallery'] = $_POST['gallery'];
}
elseif ( ! isset($_SESSION['gallery'])) {
  session_destroy();
  header("Location:index.php") ; 
}
$gallery=$_SESSION['gallery'] ;

include("$imagedata/$gallery");
$_SESSION['basedir'] = $dirs[$dirkey];
$basedir=$_SESSION['basedir'];
$_GLOBAL['basedir']=$_SESSION['basedir'];

if ( ! isset($default_image) ) {
  $default_image="default.jpg" ; 
}

if ( isset($_SESSION['action']) ) {
  $action = $_SESSION['action'];
  $default=false;
}
else { 
  $action="display_image";
  #$_SESSION['size']=450;
  $size=450;
  $_SESSION['imagefile']="$default_image";
  $default=true;
}

// Only display a gallery title if there is an action set - if there is no action set then it should mean we're going to the gallery front page.
if ( ! isset($_GET['action']) ) {
  $title = "";
}
elseif ( isset($_SESSION['title']) ) {
  $title = $_SESSION['title'];
}
else {
  $title = 'Gallery';
}

$title = stripslashes(htmlentities($title,  ENT_QUOTES)) ;

if ( isset($_SESSION['selection']) ) {
  $selection = $_SESSION['selection'];
}
else { 
  $selection = "$default_image" ; 
}

$gallery_title = stripslashes(htmlentities($gallery_title, ENT_QUOTES)) ;

// Start the html output

write_html_head($gallery_title);

// Start the html body
print <<<EOH
  <BODY>

<H1>$gallery_title</H2>

EOH;

if (! $default ){
  breadCrumbs($action, $gallery, $dirkey, $title );
}
else {
  breadCrumbs("default", $gallery, $dirkey, $title );
}


print <<<EOH
<TABLE>
<TR>
<TD class=list valign=top >

<H2>Galleries</H2>

<ul class="bullet">

EOH;

foreach ( array_keys($titles) as $key ) {
  gallery_listing($gallery, $key, $titles[$key]) ;
}

print "  </ul>\n";
// End of gallery list

print <<<EOH
  </TD>
EOH;
// End of navigation column

// Main Display column/cell
print <<<EOH
  <TD class=view >
  <H3>$title</H3>
EOH;


if ( $default ) {
  // Default front page image
  $size = 600 ;
  if ( ! isset($caption) || $caption == "" ) $caption = basename($default_image);
  echo <<<HTMLEND
        <img src="image_resample.php?gallery=$gallery&filekey=default&size=$size"  title="$caption" >
HTMLEND;
}
 
if ( ! $default && $action == "display_image" ) {
  display_image_section($gallery, $dirkey, $filekey, $size,$xsize,$ysize);
} 
elseif ( ! $default && $action == "edit_caption" ) {
  display_image_section($gallery, $dirkey, $filekey, $size,$xsize,$ysize);
} 
elseif ( $action == "generate_gallery" ) {
  include("generate_gallery.php");
  generate_gallery($gallery, $dirkey);
}

unset( $_SESSION['action'] );

html_footer();

/////////////////

function breadCrumbs($action, $gallery, $dirkey, $title ){
  // Display the breadcrumb trail, ie the navigation links which 
  // show the user the way back up the album/gallery tree
  // Using span to allow user defined list bullet characters and layout
  $bullet = '<span class="crumb_bullet">&gt;&gt;</span>';
  $herebullet =  '<span class="crumb_bullet">: </span>';
  print <<<EOH
  <div class="crumb_ul" > 
    <div class="crumb_li">
      <a href="logout.php" >
	  ${bullet}Album List </a>
    </div>

EOH;

  if ( $action != "default" ) {
  print <<<EOH
       <div class="crumb_li">
        <a href="gallery.php?gallery=$gallery" > 
		${bullet}Album Cover</a>
       </div> 

EOH;
  }
  elseif ( $action == "default" ) {
    print <<<EOH
       <div class="crumb_youarehere">
         ${herebullet}Album Cover
       </div>

EOH;
  }

  if ( $action != "default" && $action != "generate_gallery" ) {
  print <<<EOH
       <div class="crumb_li">
         <a href="gallery.php?gallery=$gallery&dirkey=$dirkey&action=generate_gallery&title=$title" >
	     ${bullet}Gallery Thumbs </a>
       </div>

EOH;
  }
  elseif ( $action == "generate_gallery" ) {
    print <<<EOH
       <div class="crumb_youarehere">
         ${herebullet}Gallery Thumbs
       </div>

EOH;
  }
 
  if ( $action == "display_image" ){
    print <<<EOH
       <div class="crumb_youarehere">
         ${herebullet}Image
       </div>

EOH;

  }

  print <<<EOH
  </div>
  <br/>

EOH;

}

/////////////////

function gallery_listing($gallery,$dirkey,$title){
  $title = stripslashes(htmlentities("$title", ENT_QUOTES)) ;

  global $dirs;
  $dir = $dirs[$dirkey];
  $age = filemtime($dir) ;
  if ( filemtime($dir) > time()-(60*60*24*21) ) 
	$new="<span class='new' >*New*</span>";

  echo <<<HTMLEND
    <li>
      <a href="gallery.php?gallery=$gallery&dirkey=$dirkey&action=generate_gallery&title=$title" >
      $title $new
      </a>
    </li>

HTMLEND
;

}

/////////////////

function write_html_head($title) {

echo <<<HTMLEND
  <html>
  <head>
    <title>Gallery: $title</title>
	<link REL="stylesheet"    HREF="gallery.css" type="text/css"/>
	<link REL="stylesheet"    HREF="dropdowns.css" type="text/css"/>
    <script type="text/javascript" src="dropdowns.js" ></script>
  </head>

HTMLEND;

}

///////////////

function display_image_section($gallery, $dirkey, $filekey, $size,$xsize,$ysize){
    include("set_paths.php");
    include("$imagedata/$gallery");
    if ( ! isset($_GLOBAL['filelist']) ){
      include_once("generate_filelist.php");
      $filelist = generate_filelist($gallery,$dirkey);
    }
    else {
      $filelist=($_GLOBAL['filelist']);
    }

    $numfiles=count($filelist);

    #$imagecache=dirname(__FILE__)."/imagecache";
    $basedir = $dirs[$dirkey];

    if ( preg_match("/\.(mov|mpg|mpeg|avi|mp4)$/i", $filelist[$filekey]) ){
      $type="movie";
    }

    // Create next image href
    #$nexttag = "<span class='nav_inactive' >Next&gt;&gt;</span>";
    if ( $filekey+1 >= $numfiles){
      $nextfile=$filelist[0];
      $nextfile="$basedir/$nextfile";
      $nexttag="<a class='prevnext_active' href='gallery.php?filekey=0&size=700&action=display_image'>|&lt;&lt;Back to start</a>";
    }
    else
    {
      $nextkey=$filekey+1;
      $nextfile=$filelist[$nextkey];
      $nextfile="$basedir/$nextfile";
      $nexttag="<a class='prevnext_active' href='gallery.php?filekey=$nextkey&size=700&action=display_image'>Next&gt;&gt;</a>";
    }

    // Create href to previous image
    if ( $filekey == 0 ){
	  # We are at first image so don't show next link - just inactive.
      $prevtag = "<span class='prevnext_inactive' >&lt;&lt;Previous</span>";
    } else {
      $prevkey=$filekey-1;
      $prevfile=$filelist[$prevkey];
      $prevfile="$basedir/$prevfile";
      $prevtag = "<a class='prevnext_active' href='gallery.php?&filekey=$prevkey&size=700&action=display_image'>&lt;&lt;Previous</a>";
    }

    // Use random number so that browser cache does not mistake this for the same picture each time
    $random = rand(1000, 9999) ;
    #$imagefile=$_SESSION['imagefile'];
    $imagefile="$basedir/".$filelist[$filekey];
    
    $_GLOBAL['caption'] = get_caption($imagefile);
    $caption=$_GLOBAL['caption'];

    // Menu line
    if ($type != "movie" ){
      ?> <div class="imagenavigate" > <?php 

      include("resize_menu.php");
	  print "\n<span id='resize_menu'>\n";
      display_resize_menu($filekey);
	  print "</span>\n";
	}
	else {
	  //Display fake resize menu as placeholder
	  print "\n<ul class='nav' ><li> </li></ul>\n";
    }

    print <<<EOH
        <span class="prevnext" >
          $prevtag &nbsp; &nbsp; &nbsp; $nexttag 
        </span>
EOH;

    if ( $_SESSION['edit'] ) print <<<EOH
    <span id="edit_caption_link" >
     <a href="?gallery=$gallery&action=edit_caption&filekey=$filekey&dirkey=$dirkey&size=$size" >
      Edit Caption
     </a>
    </span>
    </div><br/>

EOH;


  #if ( $_SESSION['action'] != 'edit_caption' && authorise_user('edit_caption') ){
  if ( $_SESSION['action'] != 'edit_caption' ) {
    // display caption
    print <<<EOH
	<br/>
    <span id="caption" >$caption</span>
EOH;
    print "\n<br/>\n";
  }
  elseif ( $_SESSION['action'] == 'edit_caption' ) {
    // display caption in an editable text box
    $filepath = $dirs[$dirkey] ."/". $filelist[$filekey] ;
    caption_edit_form($filepath, $gallery, $dirkey, $filekey);
    print "<br/>\n";
  }
  else {
    // no edit functions requested, just write the caption
    print <<<EOH
      <span id="caption" >$caption</span><br/>
EOH;
  }

  // Display image
  if ( preg_match_all("/\.(mov|mpg|mpeg|avi|mp4)$/i", $filelist[$filekey], $matches )){
  $mimetype=mime_content_type($dirs[$dirkey]."/".$filelist[$filekey]);

  $parts=$matches[0];  $type=$parts[0];
  #$filename="$basedir/${filelist[$filekey]}";

  #<embed type="video/x-msvideo" src='send_file.php?mode=stream&gallery=$gallery&dirkey=$dirkey&filekey=$filekey' width=640 height=480 >
  #<object type="video/avi" data='send_file.php?mode=stream&gallery=$gallery&dirkey=$dirkey&filekey=$filekey' width=640 height=480 >

  echo <<<HTMLEND
  <span class="center" >This file "$filelist[$filekey]" is a "$mimetype" movie file.<br/>
  <a href='send_file.php?mode=stream&gallery=$gallery&dirkey=$dirkey&filekey=$filekey' type='$mimetype' >Click here to play it</a>
  <br/>
  <a href='send_file.php?mode=attach&gallery=$gallery&dirkey=$dirkey&filekey=$filekey'>
  <b>Click here to download it.</b></a></span><br>
HTMLEND;
    }
    else{
      #if ( $_SESSION['size'] == "full" ) {
      if ( $size == "full" ) {
	$filekey = $_SESSION['filekey'];
	$filelist = $_SESSION['filelist'];
	$basedir = $_SESSION['basedir'];
        $filename = $filelist[$filekey];
	$src_imgfile = "$basedir/$filename";
        if ( ! isset($caption) || $caption == "" ) $caption = $filename;
        echo <<<HTMLEND
	<img src="send_file.php?mode=stream&gallery=$gallery&dirkey=$dirkey&filekey=$filekey" title="$caption" >
HTMLEND;
      } else {
        if ( ! isset($caption) || $caption == "" ) $caption = basename($imagefile);
        if ( $size > 10 ) { $urlsize = "size=$size"; }
        else { $urlsize = "xsize=$xsize&ysize=$ysize"; }

	    $filekey = $_SESSION['filekey'];
	    $dirkey = $_SESSION['dirkey'];

        echo <<<HTMLEND
	<img src="image_resample.php?gallery=$gallery&dirkey=$dirkey&filekey=$filekey&$urlsize&xxx=$random"  title="$caption">
HTMLEND;
      }

      print "\n\n<br/>\n\n";
	  show_exif_button();
	  display_exif( "$basedir/".$filelist[$filekey] );

    }
} 

////////////////

function display_exif($src_imgfile) {
  // Display exif image data
  #print "Exif image data:<br/> <code> ". system("exiv2 $src_imgfile") . "</code>";
  print "\n\n<span id='exifdata' > Exif image data:<br/>\n<ul>";
  exec("exiv2 $src_imgfile", $exifdata);

  foreach( $exifdata as $line ){
    if ( preg_match("/File name/i", $line ) || ! preg_match("/\w/", $line ) ){
      continue;
    }
    
    print "\n<li>$line</li>";
  }

  print "</ul>\n</span>\n";
  
}

////////////////

function show_exif_button() {
    print <<<EOH
		 <span id="exifbutton"  onclick='exifdata.style.display = ( exifdata.style.display == "block" ) ? "none" : "block" ; if (exifdata.style.display == "none" ) { exifexpand.innerHTML = ("+"); } else { exifexpand.innerHTML = ("-");} ' >
			<span id="exifexpand" > + </span>
			Image data
		 </span>

EOH;
}
////////////////

function html_footer() {
echo <<<HTMLEND
 </TD>
 </TR>
 </TABLE>
 
 </BODY>
 </HTML>

HTMLEND;
}

?>