added some comments
[phpfspot.git] / phpfspot.class.php
index 15697ad78fd73df8bcdf325ac0f2de191318c2a0..edf3965d6706cfef5929b0a39a4d65144854835d 100644 (file)
@@ -32,6 +32,7 @@ class PHPFSPOT {
    var $tmpl;
    var $tags;
    var $avail_tags;
+   private $dbver;
 
    /**
     * class constructor
@@ -46,7 +47,14 @@ class PHPFSPOT {
 
       /* set application name and version information */
       $this->cfg->product = "phpfspot";
-      $this->cfg->version = "1.1";
+      $this->cfg->version = "1.2";
+
+      $this->sort_orders= array(
+         'date_asc' => 'Date ↑',
+         'date_desc' => 'Date ↓',
+         'name_asc' => 'Name ↑',
+         'name_desc' => 'Name ↓'
+      );
 
       /* Check necessary requirements */
       if(!$this->checkRequirements()) {
@@ -54,17 +62,29 @@ class PHPFSPOT {
       }
 
       $this->db  = new PHPFSPOT_DB($this, $this->cfg->fspot_db);
-      
+      if(!is_writeable($this->cfg->fspot_db)) {
+         print $this->cfg->fspot_db ." is not writeable for user ". $this->getuid() ."\n";
+         exit(1);
+      }
+
+      $this->dbver = $this->getFspotDBVersion();
+
       if(!is_writeable(dirname($this->cfg->phpfspot_db))) {
-         print dirname($this->cfg->phpfspot_db) .": directory is not writeable!";
+         print dirname($this->cfg->phpfspot_db) .": directory is not writeable for user ". $this->getuid() ."\n";
          exit(1);
       }
-         
+
+      if(!is_writeable($this->cfg->base_path ."/templates_c")) {
+         print $this->cfg->base_path ."/templates_c: directory is not writeable for user ". $this->getuid() ."\n";
+         exit(1);
+      }
+
       $this->cfg_db = new PHPFSPOT_DB($this, $this->cfg->phpfspot_db);
       if(!is_writeable($this->cfg->phpfspot_db)) {
          print $this->cfg->phpfspot_db ." is not writeable for user ". $this->getuid() ."\n";
          exit(1);
       }
+
       $this->check_config_table();
 
       /* include Smarty template engine */
@@ -76,9 +96,12 @@ class PHPFSPOT {
       require_once "phpfspot_tmpl.php";
       $this->tmpl = new PHPFSPOT_TMPL($this);
 
-      $this->get_tags();
+      /* check if all necessary indices exist */
+      $this->checkDbIndices();
 
-      session_start();
+      /* if session is not yet started, do it now */
+      if(session_id() == "")
+         session_start();
 
       if(!isset($_SESSION['tag_condition']))
          $_SESSION['tag_condition'] = 'or';
@@ -116,65 +139,68 @@ class PHPFSPOT {
       $this->tmpl->assign('current_condition', $_SESSION['tag_condition']);
       $this->tmpl->assign('template_path', 'themes/'. $this->cfg->theme_name);
 
-      $_SESSION['start_action'] = $_GET['mode'];
+      if(isset($_GET['mode'])) {
 
-      switch($_GET['mode']) {
-         case 'showpi':
-            if(isset($_GET['tags'])) {
-               $_SESSION['selected_tags'] = $this->extractTags($_GET['tags']);
-            }
-            if(isset($_GET['from_date']) && $this->isValidDate($_GET['from_date'])) {
-               $_SESSION['from_date'] = strtotime($_GET['from_date'] ." 00:00:00");
-            }
-            if(isset($_GET['to_date']) && $this->isValidDate($_GET['to_date'])) {
-               $_SESSION['to_date'] = strtotime($_GET['to_date'] ." 23:59:59");
-            }
-            break;
-         case 'showp':
-            if(isset($_GET['tags'])) {
-               $_SESSION['selected_tags'] = $this->extractTags($_GET['tags']);
-               $_SESSION['start_action'] = 'showp';
-            }
-            if(isset($_GET['id']) && is_numeric($_GET['id'])) {
-               $_SESSION['current_photo'] = $_GET['id'];
-               $_SESSION['start_action'] = 'showp';
-            }
-            if(isset($_GET['from_date']) && $this->isValidDate($_GET['from_date'])) {
-               $_SESSION['from_date'] = strtotime($_GET['from_date']);
-            }
-            if(isset($_GET['to_date']) && $this->isValidDate($_GET['to_date'])) {
-               $_SESSION['to_date'] = strtotime($_GET['to_date']);
-            }
-            break;
-         case 'export':
-            $this->tmpl->show("export.tpl");
-            return;
-            break;
-         case 'slideshow':
-            $this->tmpl->show("slideshow.tpl");
-            return;
-            break;
-         case 'rss':
-            if(isset($_GET['tags'])) {
-               $_SESSION['selected_tags'] = $this->extractTags($_GET['tags']);
-            }
-            if(isset($_GET['from_date']) && $this->isValidDate($_GET['from_date'])) {
-               $_SESSION['from_date'] = strtotime($_GET['from_date'] ." 00:00:00");
-            }
-            if(isset($_GET['to_date']) && $this->isValidDate($_GET['to_date'])) {
-               $_SESSION['to_date'] = strtotime($_GET['to_date'] ." 23:59:59");
-            }
-            $this->getRSSFeed();
-            return;
-            break;
+         $_SESSION['start_action'] = $_GET['mode'];
+
+         switch($_GET['mode']) {
+            case 'showpi':
+               if(isset($_GET['tags'])) {
+                  $_SESSION['selected_tags'] = $this->extractTags($_GET['tags']);
+               }
+               if(isset($_GET['from_date']) && $this->isValidDate($_GET['from_date'])) {
+                  $_SESSION['from_date'] = strtotime($_GET['from_date'] ." 00:00:00");
+               }
+               if(isset($_GET['to_date']) && $this->isValidDate($_GET['to_date'])) {
+                  $_SESSION['to_date'] = strtotime($_GET['to_date'] ." 23:59:59");
+               }
+               break;
+            case 'showp':
+               if(isset($_GET['tags'])) {
+                  $_SESSION['selected_tags'] = $this->extractTags($_GET['tags']);
+                  $_SESSION['start_action'] = 'showp';
+               }
+               if(isset($_GET['id']) && is_numeric($_GET['id'])) {
+                  $_SESSION['current_photo'] = $_GET['id'];
+                  $_SESSION['start_action'] = 'showp';
+               }
+               if(isset($_GET['from_date']) && $this->isValidDate($_GET['from_date'])) {
+                  $_SESSION['from_date'] = strtotime($_GET['from_date']);
+               }
+               if(isset($_GET['to_date']) && $this->isValidDate($_GET['to_date'])) {
+                  $_SESSION['to_date'] = strtotime($_GET['to_date']);
+               }
+               break;
+            case 'export':
+               $this->tmpl->show("export.tpl");
+               return;
+               break;
+            case 'slideshow':
+               $this->tmpl->show("slideshow.tpl");
+               return;
+               break;
+            case 'rss':
+               if(isset($_GET['tags'])) {
+                  $_SESSION['selected_tags'] = $this->extractTags($_GET['tags']);
+               }
+               if(isset($_GET['from_date']) && $this->isValidDate($_GET['from_date'])) {
+                  $_SESSION['from_date'] = strtotime($_GET['from_date'] ." 00:00:00");
+               }
+               if(isset($_GET['to_date']) && $this->isValidDate($_GET['to_date'])) {
+                  $_SESSION['to_date'] = strtotime($_GET['to_date'] ." 23:59:59");
+               }
+               $this->getRSSFeed();
+               return;
+               break;
+         }
       }
 
       if(isset($_SESSION['from_date']) && isset($_SESSION['to_date']))
          $this->tmpl->assign('date_search_enabled', true);
 
+      $this->tmpl->register_function("sort_select_list", array(&$this, "smarty_sort_select_list"), false);
       $this->tmpl->assign('from_date', $this->get_calendar('from'));
       $this->tmpl->assign('to_date', $this->get_calendar('to'));
-      $this->tmpl->assign('sort_field', $this->get_sort_field());
       $this->tmpl->assign('content_page', 'welcome.tpl');
       $this->tmpl->show("index.tpl");
 
@@ -196,11 +222,33 @@ class PHPFSPOT {
       $this->avail_tags = Array();
       $count = 0;
    
-      $result = $this->db->db_query("
-         SELECT id,name
-         FROM tags
-         ORDER BY sort_priority ASC
-      ");
+      if(isset($this->cfg->show_tags) && !empty($this->cfg->show_tags)) {
+         $query_str="
+            SELECT
+               DISTINCT t1.id as id, t1.name as name
+            FROM  
+               photo_tags pt1
+            INNER JOIN photo_tags
+               pt2 ON pt1.photo_id=pt2.photo_id
+            INNER JOIN tags t1
+               ON t1.id=pt1.tag_id
+            INNER JOIN tags t2
+               ON t2.id=pt2.tag_id
+            WHERE
+               t2.name IN  ('".implode("','",$this->cfg->show_tags)."')
+            ORDER BY
+               t1.sort_priority ASC";
+
+         $result = $this->db->db_query($query_str);
+      }
+      else
+      {
+         $result = $this->db->db_query("
+            SELECT id,name
+            FROM tags
+            ORDER BY sort_priority ASC
+         ");
+      }
       
       while($row = $this->db->db_fetch_object($result)) {
 
@@ -214,13 +262,14 @@ class PHPFSPOT {
          if(in_array($row['name'], $this->cfg->hide_tags))
             continue;
 
-         /* if the user has specified to only show certain tags which
-            are specified in phpfspot's configuration, ignore all others
-            so they will not be added to the tag list.
-         */
+         /* if you include the following if-clause and the user has specified
+            to only show certain tags which are specified in phpfspot's
+            configuration, ignore all others so they will not be added to the
+            tag list.
          if(isset($this->cfg->show_tags) && !empty($this->cfg->show_tags) &&
             !in_array($row['name'], $this->cfg->show_tags))
             continue;
+         */
 
          $this->tags[$tag_id] = $tag_name; 
          $this->avail_tags[$count] = $tag_id;
@@ -238,10 +287,18 @@ class PHPFSPOT {
     */
    public function get_photo_details($idx)
    {
-      $query_str = "
-         SELECT p.id, p.name, p.time, p.directory_path, p.description
-         FROM photos p
-      ";
+      if($this->dbver < 9) {
+         $query_str = "
+            SELECT p.id, p.name, p.time, p.directory_path, p.description
+            FROM photos p
+         ";
+      }
+      else {
+         $query_str = "
+            SELECT p.id, p.uri, p.time, p.description
+            FROM photos p
+         ";
+      }
 
       /* if show_tags is set, only return details for photos which
          are specified to be shown
@@ -253,13 +310,7 @@ class PHPFSPOT {
             INNER JOIN tags t
                ON pt.tag_id=t.id
             WHERE p.id='". $idx ."'
-            AND t.name IN (
-         ";
-         foreach($this->cfg->show_tags as $tag) {
-            $query_str.= "'". $tag ."',";
-         }
-         $query_str = substr($query_str, 0, strlen($query_str)-1);
-         $query_str.= ")";
+            AND t.name IN ('".implode("','",$this->cfg->show_tags)."')";
       }
       else {
          $query_str.= "
@@ -267,8 +318,19 @@ class PHPFSPOT {
          ";
       }
 
-      $result = $this->db->db_query($query_str);
-      return $this->db->db_fetch_object($result);
+      if($result = $this->db->db_query($query_str)) {
+
+         $row = $this->db->db_fetch_object($result);
+
+         if($this->dbver < 9) {
+            $row['uri'] = "file://". $row['directory_path'] ."/". $row['name'];
+         }
+
+         return $row;
+
+      }
+   
+      return null;
 
    } // get_photo_details
 
@@ -282,10 +344,14 @@ class PHPFSPOT {
    public function getPhotoName($idx, $limit = 0)
    {
       if($details = $this->get_photo_details($idx)) {
-         $name = $this->shrink_text($details['name'], $limit);
-         return $name;
+         if($long_name = $this->parse_uri($details['uri'], 'filename')) {
+            $name = $this->shrink_text($long_name, $limit);
+            return $name;
+         }
       }
 
+      return null;
+
    } // getPhotoName()
 
    /**
@@ -361,15 +427,17 @@ class PHPFSPOT {
          return;
       }
 
-      $orig_path = $this->translate_path($details['directory_path']) ."/". $details['name'];
+      $orig_path = $this->translate_path($this->parse_uri($details['uri'], 'fullpath'));
       $thumb_path = $this->get_thumb_path($this->cfg->photo_width, $photo);
 
       if(!file_exists($orig_path)) {
          $this->_error("Photo ". $orig_path ." does not exist!<br />\n");
+         return;
       }
 
       if(!is_readable($orig_path)) {
          $this->_error("Photo ". $orig_path ." is not readable for user ". $this->getuid() ."<br />\n");
+         return;
       }
 
       /* If the thumbnail doesn't exist yet, try to create it */
@@ -409,7 +477,7 @@ class PHPFSPOT {
          $info = getimagesize($thumb_path);
 
          $this->tmpl->assign('description', $details['description']);
-         $this->tmpl->assign('image_name', $details['name']);
+         $this->tmpl->assign('image_name', $this->parse_uri($details['uri'], 'filename'));
 
          $this->tmpl->assign('width', $info[0]);
          $this->tmpl->assign('height', $info[1]);
@@ -455,6 +523,9 @@ class PHPFSPOT {
     */
    public function getAvailableTags()
    {
+      /* retrive tags from database */
+      $this->get_tags();
+
       $output = "";
 
       $result = $this->db->db_query("
@@ -496,10 +567,10 @@ class PHPFSPOT {
          if(isset($_SESSION['selected_tags']) && in_array($key, $_SESSION['selected_tags']))
             continue;
 
-          // calculate CSS font-size
-          // find the $value in excess of $min_qty
-          // multiply by the font-size increment ($size)
-          // and add the $min_size set above
+         // calculate CSS font-size
+         // find the $value in excess of $min_qty
+         // multiply by the font-size increment ($size)
+         // and add the $min_size set above
          $size = $min_size + (($value - $min_qty) * $step);
           // uncomment if you want sizes in whole %:
          $size = ceil($size);
@@ -524,7 +595,11 @@ class PHPFSPOT {
     */
    public function getSelectedTags()
    {
+      /* retrive tags from database */
+      $this->get_tags();
+
       $output = "";
+
       foreach($this->avail_tags as $tag)
       {
          // return all selected tags
@@ -533,8 +608,13 @@ class PHPFSPOT {
          }
       }
 
-      $output = substr($output, 0, strlen($output)-2);
-      print $output;
+      if($output != "") {
+         $output = substr($output, 0, strlen($output)-2);
+         return $output;
+      }
+      else {
+         return "no tags selected";
+      }
 
    } // getSelectedTags()
 
@@ -550,6 +630,9 @@ class PHPFSPOT {
       if(!isset($_SESSION['selected_tags']))
          $_SESSION['selected_tags'] = Array();
 
+      if(isset($_SESSION['searchfor']))
+         unset($_SESSION['searchfor']);
+
       if(!in_array($tag, $_SESSION['selected_tags']))
          array_push($_SESSION['selected_tags'], $tag);
    
@@ -563,6 +646,9 @@ class PHPFSPOT {
     */
    public function delTag($tag)
    {
+      if(isset($_SESSION['searchfor']))
+         unset($_SESSION['searchfor']);
+
       if(isset($_SESSION['selected_tags'])) {
          $key = array_search($tag, $_SESSION['selected_tags']);
          unset($_SESSION['selected_tags'][$key]);
@@ -654,23 +740,23 @@ class PHPFSPOT {
       /* return a search result */
       if(isset($_SESSION['searchfor']) && $_SESSION['searchfor'] != '') {
          $query_str = "
-            SELECT DISTINCT photo_id
-               FROM photo_tags pt
+            SELECT DISTINCT pt1.photo_id
+               FROM photo_tags pt1
+            INNER JOIN photo_tags pt2
+               ON pt1.photo_id=pt2.photo_id
+            INNER JOIN tags t1
+               ON pt1.tag_id=t1.id
             INNER JOIN photos p
-               ON p.id=pt.photo_id
-            INNER JOIN tags t
-               ON pt.tag_id=t.id
-            WHERE t.name LIKE '%". $_SESSION['searchfor'] ."%'";
+               ON pt1.photo_id=p.id
+            INNER JOIN tags t2
+               ON pt2.tag_id=t2.id
+            WHERE t1.name LIKE '%". $_SESSION['searchfor'] ."%' ";
 
          if(isset($additional_where_cond))
             $query_str.= "AND ". $additional_where_cond ." ";
 
          if(isset($this->cfg->show_tags) && !empty($this->cfg->show_tags)) {
-            $query_str.= "AND t.name IN (";
-            foreach($this->cfg->show_tags as $tag) {
-               $query_str.= "'". $tag ."',";
-            }
-            $query_str = substr($query_str, 0, strlen($query_str)-1) . ")";
+            $query_str.= "AND t2.name IN ('".implode("','",$this->cfg->show_tags)."')";
          }
          
          if(isset($order_str))
@@ -690,30 +776,30 @@ class PHPFSPOT {
             $selected.= $tag .",";
          $selected = substr($selected, 0, strlen($selected)-1);
 
+         /* photo has to match at least on of the selected tags */
          if($_SESSION['tag_condition'] == 'or') {
             $query_str = "
-               SELECT DISTINCT pt.photo_id
-                  FROM photo_tags pt
-               INNER JOIN photos p
-                  ON p.id=pt.photo_id
+               SELECT DISTINCT pt1.photo_id
+                  FROM photo_tags pt1
+               INNER JOIN photo_tags pt2
+                  ON pt1.photo_id=pt2.photo_id
                INNER JOIN tags t
-                  ON pt.tag_id=t.id
-               WHERE pt.tag_id IN (". $selected .")
+                  ON pt2.tag_id=t.id
+               INNER JOIN photos p
+                  ON pt1.photo_id=p.id
+               WHERE pt1.tag_id IN (". $selected .")
             ";
             if(isset($additional_where_cond)) 
                $query_str.= "AND ". $additional_where_cond ." ";
 
             if(isset($this->cfg->show_tags) && !empty($this->cfg->show_tags)) {
-               $query_str.= "AND t.name IN (";
-               foreach($this->cfg->show_tags as $tag) {
-                  $query_str.= "'". $tag ."',";
-               }
-               $query_str = substr($query_str, 0, strlen($query_str)-1) . ")";
+               $query_str.= "AND t.name IN ('".implode("','",$this->cfg->show_tags)."')";
             }
 
             if(isset($order_str))
                $query_str.= $order_str;
          }
+         /* photo has to match all selected tags */
          elseif($_SESSION['tag_condition'] == 'and') {
 
             if(count($_SESSION['selected_tags']) >= 32) {
@@ -753,21 +839,17 @@ class PHPFSPOT {
                INNER JOIN photos p
                   ON pt1.photo_id=p.id
             ";
-            $query_str.= "WHERE pt1.tag_id=". $_SESSION['selected_tags'][0];
+            $query_str.= "WHERE pt2.tag_id=". $_SESSION['selected_tags'][0]." ";
             for($i = 1; $i < count($_SESSION['selected_tags']); $i++) {
                $query_str.= "
-                  AND pt". ($i+1) .".tag_id=". $_SESSION['selected_tags'][$i] ."
+                  AND pt". ($i+2) .".tag_id=". $_SESSION['selected_tags'][$i] ."
                "; 
             }
             if(isset($additional_where_cond)) 
                $query_str.= "AND ". $additional_where_cond;
 
             if(isset($this->cfg->show_tags) && !empty($this->cfg->show_tags)) {
-               $query_str.= "AND t.name IN (";
-               foreach($this->cfg->show_tags as $tag) {
-                  $query_str.= "'". $tag ."',";
-               }
-               $query_str = substr($query_str, 0, strlen($query_str)-1) . ")";
+               $query_str.= "AND t.name IN ('".implode("','",$this->cfg->show_tags). "')";
             }
 
             if(isset($order_str))
@@ -795,11 +877,7 @@ class PHPFSPOT {
          $query_str.= "WHERE ". $additional_where_cond ." ";
 
       if(isset($this->cfg->show_tags) && !empty($this->cfg->show_tags)) {
-         $query_str.= "AND t.name IN (";
-         foreach($this->cfg->show_tags as $tag) {
-            $query_str.= "'". $tag ."',";
-         }
-         $query_str = substr($query_str, 0, strlen($query_str)-1) . ")";
+         $query_str.= "AND t.name IN ('".implode("','",$this->cfg->show_tags). "')";
       }
  
       if(isset($order_str))
@@ -836,8 +914,9 @@ class PHPFSPOT {
       }
       elseif($this->cfg->rows_per_page > 0) {
 
-         if(!$_SESSION['begin_with'] || $_SESSION['begin_with'] == 0)
+         if(!isset($_SESSION['begin_with']) || $_SESSION['begin_with'] == 0) {
             $begin_with = 0;
+         }
          else {
 
             $begin_with = $_SESSION['begin_with'];
@@ -870,30 +949,33 @@ class PHPFSPOT {
 
       for($i = $begin_with; $i < $end_with; $i++) {
 
-         $images[$rows][$cols] = $photos[$i];
-         $img_id[$rows][$cols] = $i;
-         $img_name[$rows][$cols] = htmlspecialchars($this->getPhotoName($photos[$i], 15));
-         $img_title[$rows][$cols] = "Click to view photo ". htmlspecialchars($this->getPhotoName($photos[$i], 0));
+         if(isset($photos[$i])) {
 
-         $thumb_path = $this->get_thumb_path($this->cfg->thumb_width, $photos[$i]);
+            $images[$rows][$cols] = $photos[$i];
+            $img_id[$rows][$cols] = $i;
+            $img_name[$rows][$cols] = htmlspecialchars($this->getPhotoName($photos[$i], 15));
+            $img_title[$rows][$cols] = "Click to view photo ". htmlspecialchars($this->getPhotoName($photos[$i], 0));
 
-         if(file_exists($thumb_path)) {
-            $info = getimagesize($thumb_path); 
-            $img_width[$rows][$cols] = $info[0];
-            $img_height[$rows][$cols] = $info[1];
-         }
+            $thumb_path = $this->get_thumb_path($this->cfg->thumb_width, $photos[$i]);
 
-         if($cols == $this->cfg->thumbs_per_row-1) {
-            $cols = 0;
-            $rows++;
-            $images[$rows] = Array();
-            $img_width[$rows] = Array();
-            $img_height[$rows] = Array();
-         }
-         else {
-            $cols++;
-         }
-      } 
+            if(file_exists($thumb_path)) {
+               $info = getimagesize($thumb_path); 
+               $img_width[$rows][$cols] = $info[0];
+               $img_height[$rows][$cols] = $info[1];
+            }
+
+            if($cols == $this->cfg->thumbs_per_row-1) {
+               $cols = 0;
+               $rows++;
+               $images[$rows] = Array();
+               $img_width[$rows] = Array();
+               $img_height[$rows] = Array();
+            }
+            else {
+               $cols++;
+            }
+         } 
+      }
 
       // +1 for for smarty's selection iteration
       $rows++;
@@ -912,6 +994,8 @@ class PHPFSPOT {
 
       /* do we have to display the page selector ? */
       if($this->cfg->rows_per_page != 0) {
+
+         $page_select = "";
       
          /* calculate the page switchers */
          $previous_start = $begin_with - ($this->cfg->rows_per_page * $this->cfg->thumbs_per_row);
@@ -1033,6 +1117,7 @@ class PHPFSPOT {
    {
       $this->tmpl->assign('version', $this->cfg->version);
       $this->tmpl->assign('product', $this->cfg->product);
+      $this->tmpl->assign('db_version', $this->dbver);
       $this->tmpl->show("credits.tpl");
 
    } // showCredits()
@@ -1235,7 +1320,7 @@ class PHPFSPOT {
       $details = $this->get_photo_details($idx);
 
       /* calculate file MD5 sum */
-      $full_path = $this->translate_path($details['directory_path'])  ."/". $details['name'];
+      $full_path = $this->translate_path($this->parse_uri($details['uri'], 'fullpath'));
 
       if(!file_exists($full_path)) {
          $this->_error("File ". $full_path ." does not exist\n");
@@ -1249,7 +1334,9 @@ class PHPFSPOT {
 
       $file_md5 = md5_file($full_path);
 
-      $this->_debug("Image [". $idx ."] ". $this->shrink_text($details['name'], 20) ." Thumbnails:");
+      $this->_debug("Image [". $idx ."] ". $this->shrink_text($this->parse_uri($details['uri'], 'filename'), 20) ." Thumbnails:");
+
+      $changes = false;
 
       foreach($resolutions as $resolution) {
 
@@ -1266,6 +1353,8 @@ class PHPFSPOT {
             $this->_debug(" ". $resolution ."px");
             if(!$this->create_thumbnail($full_path, $thumb_path, $resolution))
                $error = 1;
+
+            $changes = true;
          }
          /* if the file hasn't changed there is no need to regen the thumb */
          elseif($file_md5 != $this->getMD5($idx) || $force) {
@@ -1274,9 +1363,14 @@ class PHPFSPOT {
             if(!$this->create_thumbnail($full_path, $thumb_path, $resolution))
                $error = 1;
 
+            $changes = true;
          }
       }
 
+      if(!$changes) {
+         $this->_debug(" already exist");
+      }
+
       /* set the new/changed MD5 sum for the current photo */
       if(!$error) {
          $this->setMD5($idx, $file_md5);
@@ -1341,10 +1435,11 @@ class PHPFSPOT {
     * getPhotoSelection() will then only return the matching
     * photos.
     */
-   public function startSearch($searchfor, $sort_order, $from = 0, $to = 0)
+   public function startSearch($searchfor, $from = 0, $to = 0)
    {
+      $this->get_tags();
+
       $_SESSION['searchfor'] = $searchfor;
-      $_SESSION['sort_order'] = $sort_order;
       if($from != 0)
          $_SESSION['from_date'] = strtotime($from);
       else
@@ -1365,6 +1460,23 @@ class PHPFSPOT {
 
    } // startSearch()
 
+   /**
+    * updates sort order in session variable
+    *
+    * this function is invoked by RPC and will sort the requested
+    * sort order in the session variable.
+    */
+   public function updateSortOrder($order)
+   {
+      if(isset($this->sort_orders[$order])) {
+         $_SESSION['sort_order'] = $order;
+         return "ok";
+      }
+
+      return "unkown error";
+
+   } // updateSortOrder()
+
    /**
     * rotate image
     *
@@ -1571,19 +1683,23 @@ class PHPFSPOT {
     */
    private function get_calendar($mode)
    {
-      $year = $_SESSION[$mode .'_date'] ? date("Y", $_SESSION[$mode .'_date']) : date("Y");
-      $month = $_SESSION[$mode .'_date'] ? date("m", $_SESSION[$mode .'_date']) : date("m");
-      $day = $_SESSION[$mode .'_date'] ? date("d", $_SESSION[$mode .'_date']) : date("d");
+      $year = isset($_SESSION[$mode .'_date']) ? date("Y", $_SESSION[$mode .'_date']) : date("Y");
+      $month = isset($_SESSION[$mode .'_date']) ? date("m", $_SESSION[$mode .'_date']) : date("m");
+      $day = isset($_SESSION[$mode .'_date']) ? date("d", $_SESSION[$mode .'_date']) : date("d");
 
       $output = "<input type=\"text\" size=\"3\" id=\"". $mode ."year\" value=\"". $year ."\"";
-      if(!isset($_SESSION[$mode .'_date'])) $output.= " disabled=\"disabled\"";
+      if(!isset($_SESSION[$mode .'_date']))
+         $output.= " disabled=\"disabled\"";
       $output.= " />\n";
       $output.= "<input type=\"text\" size=\"1\" id=\"". $mode ."month\" value=\"". $month ."\"";
-      if(!isset($_SESSION[$mode .'_date'])) $output.= " disabled=\"disabled\"";
+      if(!isset($_SESSION[$mode .'_date']))
+         $output.= " disabled=\"disabled\"";
       $output.= " />\n";
       $output.= "<input type=\"text\" size=\"1\" id=\"". $mode ."day\" value=\"". $day ."\"";
-      if(!isset($_SESSION[$mode .'_date'])) $output.= " disabled=\"disabled\"";
+      if(!isset($_SESSION[$mode .'_date']))
+         $output.= " disabled=\"disabled\"";
       $output.= " />\n";
+
       return $output;
 
    } // get_calendar()
@@ -1749,13 +1865,13 @@ class PHPFSPOT {
 <br>
 ". $details['description']);
 
-         $orig_path = $this->translate_path($details['directory_path']) ."/". $details['name'];
+         $orig_path = $this->translate_path($this->parse_uri($details['uri'], 'fullpath'));
          $meta = $this->get_meta_informations($orig_path);
          $meta_date = isset($meta['FileDateTime']) ? $meta['FileDateTime'] : filemtime($orig_path);
 
 ?>
   <item>
-   <title><?php print htmlspecialchars($details['name']); ?></title>
+   <title><?php print htmlspecialchars($this->parse_uri($details['uri'], 'filename')); ?></title>
    <link><?php print htmlspecialchars($orig_url); ?></link>
    <guid><?php print htmlspecialchars($orig_url); ?></guid>
    <dc:date.Taken><?php print strftime("%Y-%m-%dT%H:%M:%S+00:00", $meta_date); ?></dc:date.Taken>
@@ -1782,7 +1898,7 @@ class PHPFSPOT {
    private function getCurrentTags()
    {
       $current_tags = "";
-      if($_SESSION['selected_tags'] != "") {
+      if(isset($_SESSION['selected_tags']) && $_SESSION['selected_tags'] != "") {
          foreach($_SESSION['selected_tags'] as $tag)
             $current_tags.= $tag .",";
          $current_tags = substr($current_tags, 0, strlen($current_tags)-1);
@@ -1844,20 +1960,21 @@ class PHPFSPOT {
    /**
     * returns a select-dropdown box to select photo index sort parameters
     */
-   private function get_sort_field()
+   public function smarty_sort_select_list($params, &$smarty)
    {
-      $output = "<select name=\"sort_order\">";
-      foreach(array('date_asc', 'date_desc', 'name_asc', 'name_desc') as $sort_order) {
-         $output.= "<option value=\"". $sort_order ."\"";
-         if($sort_order == $_SESSION['sort_order']) {
+      $output = "";
+
+      foreach($this->sort_orders as $key => $value) {
+         $output.= "<option value=\"". $key ."\"";
+         if($key == $_SESSION['sort_order']) {
             $output.= " selected=\"selected\"";
          }
-         $output.= ">". $sort_order ."</option>";
+         $output.= ">". $value ."</option>";
       }
-      $output.= "</select>";
+
       return $output;
 
-   } // get_sort_field()
+   } // smarty_sort_select_list()
 
    /**
     * returns the currently selected sort order
@@ -1872,10 +1989,20 @@ class PHPFSPOT {
             return " ORDER BY p.time DESC";
             break;
          case 'name_asc':
-            return " ORDER BY p.name ASC";
+            if($this->dbver < 9) {
+               return " ORDER BY p.name ASC";
+            }
+            else {
+               return " ORDER BY basename(p.uri) ASC";
+            }
             break;
          case 'name_desc':
-            return " ORDER BY p.name DESC";
+            if($this->dbver < 9) {
+               return " ORDER BY p.name DESC";
+            }
+            else {
+               return " ORDER BY basename(p.uri) DESC";
+            }
             break;
       }
 
@@ -1997,14 +2124,15 @@ class PHPFSPOT {
     */
    public function get_thumb_path($width, $photo)
    {
-      $sub_path = substr($this->getMD5($photo), 0, 2);
+      $md5 = $this->getMD5($photo);
+      $sub_path = substr($md5, 0, 2);
       return $this->cfg->thumb_path
          . "/"
          . $sub_path
          . "/"
          . $width
          . "_"
-         . $this->getMD5($photo);
+         . $md5;
 
    } // get_thumb_path()
 
@@ -2061,6 +2189,71 @@ class PHPFSPOT {
 
    } // check_readable()
 
-}
+   /**
+    * check if all needed indices are present
+    *
+    * this function checks, if some needed indices are already
+    * present, or if not, create them on the fly. they are
+    * necessary to speed up some queries like that one look for
+    * all tags, when show_tags is specified in the configuration.
+    */
+   private function checkDbIndices()
+   {
+      $result = $this->db->db_exec("
+         CREATE INDEX IF NOT EXISTS
+            phototag
+         ON
+            photo_tags
+               (photo_id, tag_id)
+      ");
+
+   } // checkDbIndices()
+
+   /**
+    * retrive F-Spot database version
+    *
+    * this function will return the F-Spot database version number
+    * It is stored within the sqlite3 database in the table meta
+    */
+   public function getFspotDBVersion()
+   {
+      if($result = $this->db->db_fetchSingleRow("
+         SELECT data as version
+         FROM meta
+         WHERE
+            name LIKE 'F-Spot Database Version'
+      "))
+         return $result['version'];
+
+      return null;
+
+   } // getFspotDBVersion()
+
+   /**
+    * parse the provided URI and will returned the
+    * requested chunk
+    */
+   public function parse_uri($uri, $mode)
+   {
+      if(($components = parse_url($uri)) !== false) {
+
+         switch($mode) {
+            case 'filename':
+               return basename($components['path']);
+               break;
+            case 'dirname':
+               return dirname($components['path']);
+               break;
+            case 'fullpath':
+               return $components['path'];
+               break;
+         }
+      }
+
+      return $uri;
+
+   } // parse_uri()
+
+} // class PHPFSPOT
 
 ?>