* This file is part of AjaXplorer.
*
* AjaXplorer is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* AjaXplorer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with AjaXplorer. If not, see .
*
* The latest code can be found at .
*/
defined('AJXP_EXEC') or die( 'Access not allowed');
/**
* @package info.ajaxplorer.plugins
* Extract Exif data from JPEG IMAGES
*/
class ExifMetaManager extends AJXP_Plugin {
protected $accessDriver;
protected $metaDefinitions;
public function init($options){
$this->options = $options;
}
public function performChecks(){
if(!function_exists("exif_imagetype")){
throw new Exception("Exif PHP extension does not seem to be installed!");
}
}
public function initMeta($accessDriver){
$this->accessDriver = $accessDriver;
if(!function_exists("exif_read_data")) return ;
//$messages = ConfService::getMessages();
$def = $this->getMetaDefinition();
if(!count($def)){
return ;
}
$cdataHead = '';
$cdataParts = "";
$even = false;
foreach ($def as $key=>$label){
$trClass = ($even?" class=\"even\"":"");
$even = !$even;
$cdataParts .= '| '.$label.' | #{'.$key.'} | ';
}
$selection = $this->xPath->query('registry_contributions/client_configs/component_config[@className="InfoPanel"]/infoPanelExtension');
$contrib = $selection->item(0);
$contrib->setAttribute("attributes", implode(",", array_keys($def)));
$contrib->setAttribute("modifier", "ExifCellRenderer.prototype.infoPanelModifier");
$htmlSel = $this->xPath->query('html', $contrib);
$html = $htmlSel->item(0);
$cdata = $this->manifestDoc->createCDATASection($cdataHead . $cdataParts . $cdataFoot);
$html->appendChild($cdata);
parent::init($this->options);
}
protected function getMetaDefinition(){
if(isSet($this->metaDefinitions)){
return $this->metaDefinitions;
}
$fields = $this->options["meta_fields"];
$arrF = explode(",", $fields);
$labels = $this->options["meta_labels"];
$arrL = explode(",", $labels);
$result = array();
foreach ($arrF as $index => $value){
$value = str_replace(".", "-", $value);
if(isSet($arrL[$index])){
$result[$value] = $arrL[$index];
}else{
$result[$value] = $value;
}
}
$this->metaDefinitions = $result;
return $result;
}
public function extractExif($actionName, $httpVars, $fileVars){
$userSelection = new UserSelection();
$userSelection->initFromHttpVars($httpVars);
$repo = ConfService::getRepository();
$repo->detectStreamWrapper();
$wrapperData = $repo->streamData;
$urlBase = $wrapperData["protocol"]."://".$repo->getId();
$decoded = AJXP_Utils::decodeSecureMagic($httpVars["file"]);
$realFile = call_user_func(array($wrapperData["classname"], "getRealFSReference"), $urlBase.$decoded);
AJXP_Utils::safeIniSet('exif.encode_unicode', 'UTF-8');
$exifData = @exif_read_data($realFile, 0, TRUE);
if($exifData === false || !is_array($exifData)) return;
if($exifData !== false && isSet($exifData["GPS"])){
$exifData["COMPUTED_GPS"] = $this->convertGPSData($exifData);
}
$excludeTags = array("componentsconfiguration", "filesource", "scenetype", "makernote");
AJXP_XMLWriter::header("metadata", array("file" => $httpVars["file"], "type" => "EXIF"));
foreach ($exifData as $section => $data){
print("");
foreach ($data as $key => $value){
if(is_array($value)) {
$value = implode(",", $value);
}
if(in_array(strtolower($key), $excludeTags)) continue;
if(!is_numeric($value)) $value = $this->string_format($value);
print("".SystemTextEncoding::toUTF8($value)."");
}
print("");
}
AJXP_XMLWriter::close("metadata");
}
function string_format($str) {
$tmpStr = "";
for($i=0;$igetUrl();
if(is_dir($currentFile) || preg_match("/\.zip\//",$currentFile)) return ;
if(!preg_match("/\.jpg$|\.jpeg$|\.tif$|\.tiff$/i",$currentFile)) return ;
$definitions = $this->getMetaDefinition();
if(!count($definitions)) return ;
if(!function_exists("exif_read_data")) return ;
//if(!exif_imagetype($currentFile)) return ;
$realFile = $ajxpNode->getRealFile();
$exif = @exif_read_data($realFile, 0, TRUE);
if($exif === false) return ;
$additionalMeta = array();
foreach ($definitions as $def => $label){
list($exifSection, $exifName) = explode("-", $def);
if($exifSection == "COMPUTED_GPS" && !isSet($exif["COMPUTED_GPS"])){
$exif['COMPUTED_GPS'] = $this->convertGPSData($exif);
}
if(isSet($exif[$exifSection]) && isSet($exif[$exifSection][$exifName])){
$additionalMeta[$def] = $exif[$exifSection][$exifName];
}
}
$ajxpNode->mergeMetadata($additionalMeta);
}
private function convertGPSData($exif){
if(!isSet($exif["GPS"])) return array();
require_once(AJXP_INSTALL_PATH."/plugins/meta.exif/class.GeoConversion.php");
$converter = new GeoConversion();
$latDeg=$this->parseGPSValue($exif["GPS"]["GPSLatitude"][0]);
$latMin=$this->parseGPSValue($exif["GPS"]["GPSLatitude"][1]);
$latSec=$this->parseGPSValue($exif["GPS"]["GPSLatitude"][2]);
$latHem=$exif["GPS"]["GPSLatitudeRef"];
$longDeg=$this->parseGPSValue($exif["GPS"]["GPSLongitude"][0]);
$longMin=$this->parseGPSValue($exif["GPS"]["GPSLongitude"][1]);
$longSec=$this->parseGPSValue($exif["GPS"]["GPSLongitude"][2]);
$longRef=$exif["GPS"]["GPSLongitudeRef"];
$latSign = ($latHem == "S" ? "-":"");
$longSign = ($longRef == "W" ? "-":"");
$gpsData = array(
"GPS_Latitude"=>"$latDeg deg $latMin' $latSec $latHem--".$converter->DMS2Dd($latSign.$latDeg."o$latMin'$latSec"),
"GPS_Longitude"=>"$longDeg deg $longMin' $longSec $longRef--".$converter->DMS2Dd($longSign.$longDeg."o$longMin'$longSec"),
"GPS_Altitude"=> $exif["GPS"]["GPSAltitude"][0]
);
return $gpsData;
}
private function parseGPSValue($value){
if(strstr($value, "/") === false){
return floatval($value);
}else{
$exp = explode("/", $value);
return round(intval($exp[0])/intval($exp[1]), 4);
}
}
}
?>