From 89e53c0955922e5b53d3d4697954a25155c1041b Mon Sep 17 00:00:00 2001
From: Daniela Grammlich <grammlich@synyx.de>
Date: Fri, 11 Oct 2019 19:44:41 +0200
Subject: [PATCH] exiftool, Check whether `exiftool` is installed in the host
 system

* refs #2
---
 main.inc.php | 53 ++++++++++++++++++++++++----------------------------
 1 file changed, 24 insertions(+), 29 deletions(-)

diff --git a/main.inc.php b/main.inc.php
index ba5e464..a7ecf21 100644
--- a/main.inc.php
+++ b/main.inc.php
@@ -17,38 +17,33 @@
 function eg_format_exif_data($exif, $filepath, $map)
 {
 
-  $output = shell_exec('exiftool -json "'.$filepath.'"');
-  $metadata = json_decode($output, true);
+  if (shell_exec('exiftool -ver')) {
+      $output = shell_exec('exiftool -json "' . $filepath . '"');
+      $metadata = json_decode($output, true);
 
-  foreach ($metadata as $key => $section) {
-    foreach ($section as $name => $val) {
-      if(substr( $name, 0, 3 ) === "GPS")
-      {
-        if($name === "GPSLatitude" or $name === "GPSLongitude")
-	{
-          /* convert to x/1 y/1 z/... format */
-          $p1 = explode("deg", $val);
-          $v1 = intval($p1[0]) . "/1";
-          $p2 = explode("'", $p1[1]);
-          $v2 = intval($p2[0]) . "/1";
+      foreach ($metadata as $key => $section) {
+          foreach ($section as $name => $val) {
+              if (substr($name, 0, 3) === "GPS") {
+                  if ($name === "GPSLatitude" or $name === "GPSLongitude") {
+                      /* convert to x/1 y/1 z/... format */
+                      $p1 = explode("deg", $val);
+                      $v1 = intval($p1[0]) . "/1";
+                      $p2 = explode("'", $p1[1]);
+                      $v2 = intval($p2[0]) . "/1";
 
-          $p3 = explode("\"", $p2[1]);
-          $v3 = intval($p3[0] * 10000) . "/10000";
+                      $p3 = explode("\"", $p2[1]);
+                      $v3 = intval($p3[0] * 10000) . "/10000";
 
-	  $exif[$name] = array($v1, $v2, $v3);
-	}
-        else if($name === "GPSLatitudeRef" or $name === "GPSLongitudeRef")
-	{
-          $exif[$name] = substr($val, 0, 1);
-        }
-	else
-	{
-          $exif[$name] = $val;
-	}
+                      $exif[$name] = array($v1, $v2, $v3);
+                  } else if ($name === "GPSLatitudeRef" or $name === "GPSLongitudeRef") {
+                      $exif[$name] = substr($val, 0, 1);
+                  } else {
+                      $exif[$name] = $val;
+                  }
+              }
+          }
       }
-    }
-  }
 
-  return $exif;
+      return $exif;
+  }
 }
-?>