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-rw-r--r--action.php160
1 files changed, 109 insertions, 51 deletions
diff --git a/action.php b/action.php
index 7e853ed44..6b21b0fa1 100644
--- a/action.php
+++ b/action.php
@@ -31,69 +31,127 @@ include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
// Check Access and exit when user status is not ok
check_status(ACCESS_GUEST);
-function force_download ($filename)
+function guess_mime_type($ext)
{
-//TODO : messages in "lang"
- if (!url_is_remote($filename))
+ switch ( strtolower($ext) )
{
- $filename = realpath($filename);
- if (!file_exists($filename))
- {
- die("NO FILE HERE");
- }
- $file_size = @filesize($filename);
- }
- else
- {
- $file_size = 0;
+ case "jpe": case "jpeg":
+ case "jpg": $ctype="image/jpeg"; break;
+ case "png": $ctype="image/png"; break;
+ case "gif": $ctype="image/gif"; break;
+ case "tiff":
+ case "tif": $ctype="image/tiff"; break;
+ case "txt": $ctype="text/plain"; break;
+ case "html":
+ case "htm": $ctype="text/html"; break;
+ case "xml": $ctype="text/xml"; break;
+ case "pdf": $ctype="application/pdf"; break;
+ case "zip": $ctype="application/zip"; break;
+ case "ogg": $ctype="application/ogg"; break;
+ default: $ctype="application/octet-stream";
}
+ return $ctype;
+}
- $file_extension = strtolower(substr(strrchr($filename,"."),1));
-
- switch ($file_extension) {
- case "jpe": case "jpeg":
- case "jpg": $ctype="image/jpg"; break;
- case "png": $ctype="image/png"; break;
- case "gif": $ctype="image/gif"; break;
- case "pdf": $ctype="application/pdf"; break;
- case "zip": $ctype="application/zip"; break;
- case "php":
- // never allow download of php scripts to protect our conf files
- die('Hacking attempt!'); break;
- default: $ctype="application/octet-stream";
- }
+function do_error( $code, $str )
+{
+ header("HTTP/1.1 $code ");
+ header("Status: $code ");
+ echo $str ;
+ exit();
+}
+
+
+if ( !isset($_GET['id']) or !is_numeric($_GET['id'])
+ or !isset($_GET['part'])
+ or !in_array($_GET['part'], array('t','e','i','h') ) )
+{
+ do_error(400, 'Invalid request - id/part');
+}
+
+$id = $_GET['id'];
+$query = '
+SELECT * FROM '. IMAGES_TABLE.'
+ WHERE id='.$id.'
+;';
+
+$result = pwg_query($query);
+$element_info = mysql_fetch_assoc($result);
+if ( empty($element_info) )
+{
+ do_error(404, 'Requested id not found');
+}
+
+// TODO - check permissions
+
+include_once(PHPWG_ROOT_PATH.'include/functions_picture.inc.php');
+$file='';
+switch ($_GET['part'])
+{
+ case 't':
+ $file = get_thumbnail_path($element_info);
+ break;
+ case 'e':
+ $file = get_element_path($element_info);
+ break;
+ case 'i':
+ $file = get_image_path($element_info);
+ break;
+ case 'h':
+ $file = get_high_path($element_info);
+ break;
+}
+
+if ( empty($file) )
+{
+ do_error(404, 'Requested file not found');
+}
+
+$http_headers = array();
- header("Pragma: public");
- header("Expires: 0");
- header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
- header("Cache-Control: private",false);
- header("Content-Type: $ctype");
- header("Content-Disposition: attachment; filename=\""
- .basename($filename)."\";");
- header("Content-Transfer-Encoding: binary");
- if (isset($file_size) and ($file_size != 0))
+$ctype = null;
+if (!url_is_remote($file))
+{
+ if ( !@is_readable($file) )
{
- header("Content-Length: ".@filesize($filename));
+ do_error(404, "Requested file not found - $file");
}
-
- // Looking at the safe_mode configuration for execution time
- if (ini_get('safe_mode') == 0)
+ $http_headers[] = 'Content-Length: '.@filesize($file);
+ if ( function_exists('mime_content_type') )
{
- @set_time_limit(0);
+ $ctype = mime_content_type($file);
}
+}
+if (!isset($ctype))
+{ // give it a guess
+ $ctype = guess_mime_type( get_extension($file) );
+}
- @readfile("$filename") or die("File not found.");
+$http_headers[] = 'Content-Type: '.$ctype;
+
+if (!isset($_GET['view']))
+{
+ $http_headers[] = 'Content-Disposition: attachment; filename="'
+ .basename($file).'";';
+ $http_headers[] = 'Content-Transfer-Encoding: binary';
}
+$http_headers[] = 'Pragma: public';
+$http_headers[] = 'Expires: 0';
+$http_headers[] = 'Cache-Control: must-revalidate, post-check=0, pre-check=0';
-//--------------------------------------------------------- download big picture
-if ( isset( $_GET['dwn'] ) )
+
+foreach ($http_headers as $header)
{
-//TODO : verify the path begins with something in galleries_url and that user has access rights to the picture
-// in order to avoid hacking atempts by forged url
- if (preg_match('/\.\./',$_GET['dwn'])) {
- die('Hacking attempt!');
- }
- force_download($_GET['dwn']);
+ header( $header );
}
+header("Cache-Control: private",false); //???
+
+// Looking at the safe_mode configuration for execution time
+if (ini_get('safe_mode') == 0)
+{
+ @set_time_limit(0);
+}
+
+@readfile($file);
-?>
+?> \ No newline at end of file