+ /**
+ * output RSS feed
+ */
+ public function getRSSFeed()
+ {
+ Header("Content-type: text/xml; charset=utf-8");
+ print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n";
+?>
+<rss version="2.0"
+ xmlns:media="http://search.yahoo.com/mrss/"
+ xmlns:dc="http://purl.org/dc/elements/1.1/"
+ >
+ <channel>
+ <title>phpfspot</title>
+ <description>phpfspot RSS feed</description>
+ <link><?php print htmlspecialchars($this->get_phpfspot_url()); ?></link>
+ <pubDate><?php print strftime("%a, %d %b %Y %T %z"); ?></pubDate>
+ <generator>phpfspot</generator>
+<?php
+
+ $pictures = $this->getPhotoSelection();
+ $current_tags = $this->getCurrentTags();
+
+ foreach($pictures as $picture) {
+
+ $orig_url = $this->get_phpfspot_url() ."index.php?mode=showp&id=". $picture;
+ if($current_tags != "") {
+ $orig_url.= "&tags=". $current_tags;
+ }
+ if(isset($_SESSION['from_date']) && isset($_SESSION['to_date'])) {
+ $orig_url.= "&from_date=". $_SESSION['from_date'] ."&to_date=". $_SESSION['to_date'];
+ }
+
+ $details = $this->get_photo_details($picture);
+
+ $thumb_url = $this->get_phpfspot_url() ."phpfspot_img.php?idx=". $picture ."&width=". $this->cfg->thumb_width;
+ $thumb_html = htmlspecialchars("
+<a href=\"". $orig_url ."\"><img src=\"". $thumb_url ."\" /></a>
+<br>
+". $details['description']);
+
+ $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($this->parse_uri($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>
+ <description>
+ <?php print $thumb_html; ?>
+ </description>
+ <pubDate><?php print strftime("%a, %d %b %Y %T %z", $meta_date); ?></pubDate>
+ </item>
+<?php
+
+ }
+?>
+ </channel>
+</rss>
+<?php
+
+
+ } // getExport()
+
+
+ /**
+ * return all selected tags as one string
+ */
+ private function getCurrentTags()
+ {
+ $current_tags = "";
+ if(isset($_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);
+ }
+ return $current_tags;
+
+ } // getCurrentTags()
+
+ /**
+ * return the current photo
+ */
+ public function getCurrentPhoto()
+ {
+ if(isset($_SESSION['current_photo'])) {
+ print $_SESSION['current_photo'];
+ }
+ } // getCurrentPhoto()
+
+ /**
+ * tells the client browser what to do
+ *
+ * this function is getting called via AJAX by the
+ * client browsers. it will tell them what they have
+ * to do next. This is necessary for directly jumping
+ * into photo index or single photo view when the are
+ * requested with specific URLs
+ */
+ public function whatToDo()
+ {
+ if(isset($_SESSION['current_photo']) && $_SESSION['start_action'] == 'showp') {
+ return "show_photo";
+ }
+ elseif(isset($_SESSION['selected_tags']) && !empty($_SESSION['selected_tags'])) {
+ return "showpi_tags";
+ }
+ elseif(isset($_SESSION['start_action']) && $_SESSION['start_action'] == 'showpi') {
+ return "showpi";
+ }
+
+ return "nothing special";
+
+ } // whatToDo()
+
+ /**
+ * return the current process-user
+ */
+ private function getuid()
+ {
+ if($uid = posix_getuid()) {
+ if($user = posix_getpwuid($uid)) {
+ return $user['name'];
+ }
+ }
+
+ return 'n/a';
+
+ } // getuid()
+
+ /**
+ * returns a select-dropdown box to select photo index sort parameters
+ */
+ public function smarty_sort_select_list($params, &$smarty)
+ {
+ $output = "";
+
+ foreach($this->sort_orders as $key => $value) {
+ $output.= "<option value=\"". $key ."\"";
+ if($key == $_SESSION['sort_order']) {
+ $output.= " selected=\"selected\"";
+ }
+ $output.= ">". $value ."</option>";
+ }
+
+ return $output;
+
+ } // smarty_sort_select_list()
+
+ /**
+ * returns the currently selected sort order
+ */
+ private function get_sort_order()
+ {
+ switch($_SESSION['sort_order']) {
+ case 'date_asc':
+ return " ORDER BY p.time ASC";
+ break;
+ case 'date_desc':
+ return " ORDER BY p.time DESC";
+ break;
+ case 'name_asc':
+ if($this->dbver < 9) {
+ return " ORDER BY p.name ASC";
+ }
+ else {
+ return " ORDER BY basename(p.uri) ASC";
+ }
+ break;
+ case 'name_desc':
+ if($this->dbver < 9) {
+ return " ORDER BY p.name DESC";
+ }
+ else {
+ return " ORDER BY basename(p.uri) DESC";
+ }
+ break;
+ }
+
+ } // get_sort_order()
+
+ /***
+ * return the next to be shown slide show image
+ *
+ * this function returns the URL of the next image
+ * in the slideshow sequence.
+ */
+ public function getNextSlideShowImage()
+ {
+ $all_photos = $this->getPhotoSelection();
+
+ if(!isset($_SESSION['slideshow_img']) || $_SESSION['slideshow_img'] == count($all_photos)-1)
+ $_SESSION['slideshow_img'] = 0;
+ else
+ $_SESSION['slideshow_img']++;
+
+ return $this->get_phpfspot_url() ."phpfspot_img.php?idx=". $all_photos[$_SESSION['slideshow_img']] ."&width=". $this->cfg->photo_width;
+
+ } // getNextSlideShowImage()
+
+ /***
+ * return the previous to be shown slide show image
+ *
+ * this function returns the URL of the previous image
+ * in the slideshow sequence.
+ */
+ public function getPrevSlideShowImage()
+ {
+ $all_photos = $this->getPhotoSelection();
+
+ if(!isset($_SESSION['slideshow_img']) || $_SESSION['slideshow_img'] == 0)
+ $_SESSION['slideshow_img'] = 0;
+ else
+ $_SESSION['slideshow_img']--;
+
+ return $this->get_phpfspot_url() ."phpfspot_img.php?idx=". $all_photos[$_SESSION['slideshow_img']] ."&width=". $this->cfg->photo_width;
+
+ } // getPrevSlideShowImage()
+
+ public function resetSlideShow()
+ {
+ if(isset($_SESSION['slideshow_img']))
+ unset($_SESSION['slideshow_img']);
+ } // resetSlideShow()
+
+ /***
+ * get random photo
+ *
+ * this function will get all photos from the fspot
+ * database and randomly return ONE entry
+ *
+ * saddly there is yet no sqlite3 function which returns
+ * the bulk result in array, so we have to fill up our
+ * own here.
+ */
+ public function get_random_photo()
+ {
+ $all = Array();
+
+ $result = $this->db->db_query("
+ SELECT id
+ FROM photos
+ ");
+
+ while($row = $this->db->db_fetch_object($result)) {
+ array_push($all, $row['id']);
+ }
+
+ return $all[array_rand($all)];
+
+ } // get_random_photo()
+
+ /**
+ * validates provided date
+ *
+ * this function validates if the provided date
+ * contains a valid date and will return true
+ * if it is.
+ */
+ public function isValidDate($date_str)
+ {
+ $timestamp = strtotime($date_str);
+
+ if(is_numeric($timestamp))
+ return true;
+
+ return false;
+
+ } // isValidDate()
+
+ /**
+ * timestamp to string conversion
+ */
+ private function ts2str($timestamp)
+ {
+ return strftime("%Y-%m-%d", $timestamp);
+ } // ts2str()
+
+ private function extractTags($tags_str)
+ {
+ $not_validated = split(',', $_GET['tags']);
+ $validated = array();
+
+ foreach($not_validated as $tag) {
+ if(is_numeric($tag))
+ array_push($validated, $tag);
+ }
+
+ return $validated;
+
+ } // extractTags()
+
+ /**
+ * returns the full path to a thumbnail
+ */
+ public function get_thumb_path($width, $photo)
+ {
+ $md5 = $this->getMD5($photo);
+ $sub_path = substr($md5, 0, 2);
+ return $this->cfg->thumb_path
+ . "/"
+ . $sub_path
+ . "/"
+ . $width
+ . "_"
+ . $md5;
+
+ } // get_thumb_path()
+
+ /**
+ * returns server's virtual host name
+ */
+ private function get_server_name()
+ {
+ return $_SERVER['SERVER_NAME'];
+ } // get_server_name()
+
+ /**
+ * returns type of webprotocol which is
+ * currently used
+ */
+ private function get_web_protocol()
+ {
+ if(!isset($_SERVER['HTTPS']))
+ return "http";
+ else
+ return "https";
+ } // get_web_protocol()
+
+ /**
+ * return url to this phpfspot installation
+ */
+ private function get_phpfspot_url()
+ {
+ return $this->get_web_protocol() ."://". $this->get_server_name() . $this->cfg->web_path;
+ } // get_phpfspot_url()
+
+ /**
+ * check file exists and is readable
+ *
+ * returns true, if everything is ok, otherwise false
+ * if $silent is not set, this function will output and
+ * error message
+ */
+ private function check_readable($file, $silent = null)
+ {
+ if(!file_exists($file)) {
+ if(!isset($silent))
+ print "File \"". $file ."\" does not exist.\n";
+ return false;
+ }
+
+ if(!is_readable($file)) {
+ if(!isset($silent))
+ print "File \"". $file ."\" is not reachable for user ". $this->getuid() ."\n";
+ return false;
+ }
+
+ return true;
+
+ } // 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