SWFupload adding extra extension?
- by st4ck0v3rfl0w
Hi Everyone,
I've been struggling with this for a half day and can't seem to figure out why SWFupload is adding an extra extension to my uploads? (e.g. burer.jpg.jpg)
I've reviewed the below code a thousand times and can't figure out why my files (whether png, gif or jpg) get an added .jpg extension?
<?php
$POST_MAX_SIZE = ini_get('post_max_size');
$unit = strtoupper(substr($POST_MAX_SIZE, -1));
$multiplier = ($unit == 'M' ? 1048576 : ($unit == 'K' ? 1024 : ($unit == 'G' ? 1073741824 : 1)));
if ((int)$_SERVER['CONTENT_LENGTH'] > $multiplier*(int)$POST_MAX_SIZE && $POST_MAX_SIZE) {
header("HTTP/1.1 500 Internal Server Error"); // This will trigger an uploadError event in SWFUpload
echo "POST exceeded maximum allowed size.";
exit(0);
}
// Settings
$save_path = "/home/images/";
$upload_name = "image";
$max_file_size_in_bytes = 2147483647; // 2GB in bytes
$extension_whitelist = array("jpg", "gif", "png", "jpeg"); // Allowed file extensions
$valid_chars_regex = '.A-Z0-9_ !@#$%^&()+={}\[\]\',~`-'; // Characters allowed in the file name (in a Regular Expression format)
// Other variables
$MAX_FILENAME_LENGTH = 260;
$file_name = "";
$file_extension = "";
$uploadErrors = array(
0=>"There is no error, the file uploaded successfully",
1=>"The uploaded file exceeds the upload_max_filesize directive in php.ini",
2=>"The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form",
3=>"The uploaded file was only partially uploaded",
4=>"No file was uploaded",
6=>"Missing a temporary folder"
);
// Validate the upload
if (!isset($_FILES[$upload_name])) {
HandleError("No upload found in \$_FILES for " . $upload_name);
exit(0);
} else if (isset($_FILES[$upload_name]["error"]) && $_FILES[$upload_name]["error"] != 0) {
HandleError($uploadErrors[$_FILES[$upload_name]["error"]]);
exit(0);
} else if (!isset($_FILES[$upload_name]["tmp_name"]) || !@is_uploaded_file($_FILES[$upload_name]["tmp_name"])) {
HandleError("Upload failed is_uploaded_file test.");
exit(0);
} else if (!isset($_FILES[$upload_name]['name'])) {
HandleError("File has no name.");
exit(0);
}
// Validate the file size (Warning: the largest files supported by this code is 2GB)
$file_size = @filesize($_FILES[$upload_name]["tmp_name"]);
if (!$file_size || $file_size > $max_file_size_in_bytes) {
HandleError("File exceeds the maximum allowed size");
exit(0);
}
if ($file_size <= 0) {
HandleError("File size outside allowed lower bound");
exit(0);
}
// Validate file name (for our purposes we'll just remove invalid characters)
$file_name = preg_replace('/[^'.$valid_chars_regex.']|\.+$/i', "", $_FILES[$upload_name]['name']);
if (strlen($file_name) == 0 || strlen($file_name) > $MAX_FILENAME_LENGTH) {
HandleError("Invalid file name");
exit(0);
}
// Validate file extension
$path_info = pathinfo($_FILES[$upload_name]['name']);
$file_extension = $path_info["extension"];
$is_valid_extension = false;
foreach ($extension_whitelist as $extension) {
if (strcasecmp($file_extension, $extension) == 0) {
$is_valid_extension = true;
break;
}
}
if (!$is_valid_extension) {
HandleError("Invalid file extension");
exit(0);
}
if (!@move_uploaded_file($_FILES[$upload_name]["tmp_name"], $save_path.$file_name)) {
HandleError("File could not be saved.");
exit(0);
}
HandleError($_FILES[$upload_name]['name']);
exit(0);
function HandleError($message) {
echo $message;
}
?>
