I'm testing php 7.4 on file upload errors I have 2 files:
- testscript.html (html form)
- testscript.php
Error = Invalid parameters when uploading an image jpg or png
<html>
<head></head>
<body>
<form action="testscript.php" method="post">
<input type="file"
id="upfile" name="upfile"
accept="image/png, image/jpeg">
<input type="submit" value="send">
</form>
</body>
</html>
Here is the php script Found it here: https://www.php.net/manual/en/features.file-upload.php
I'm testing out Magento 2 and first problem I came across is that the front-end doesn't show images. I can't even upload images. It seems broken in the back-end.
<?php
header('Content-Type: text/plain; charset=utf-8');
try {
// Undefined | Multiple Files | $_FILES Corruption Attack
// If this request falls under any of them, treat it invalid.
if (
!isset($_FILES['upfile']['error']) ||
is_array($_FILES['upfile']['error'])
) {
throw new RuntimeException('Invalid parameters.');
}
// Check $_FILES['upfile']['error'] value.
switch ($_FILES['upfile']['error']) {
case UPLOAD_ERR_OK:
break;
case UPLOAD_ERR_NO_FILE:
throw new RuntimeException('No file sent.');
case UPLOAD_ERR_INI_SIZE:
case UPLOAD_ERR_FORM_SIZE:
throw new RuntimeException('Exceeded filesize limit.');
default:
throw new RuntimeException('Unknown errors.');
}
// You should also check filesize here.
if ($_FILES['upfile']['size'] > 1000000) {
throw new RuntimeException('Exceeded filesize limit.');
}
// DO NOT TRUST $_FILES['upfile']['mime'] VALUE !!
// Check MIME Type by yourself.
$finfo = new finfo(FILEINFO_MIME_TYPE);
if (false === $ext = array_search(
$finfo->file($_FILES['upfile']['tmp_name']),
array(
'jpg' => 'image/jpeg',
'png' => 'image/png',
'gif' => 'image/gif',
),
true
)) {
throw new RuntimeException('Invalid file format.');
}
// You should name it uniquely.
// DO NOT USE $_FILES['upfile']['name'] WITHOUT ANY VALIDATION !!
// On this example, obtain safe unique name from its binary data.
if (!move_uploaded_file(
$_FILES['upfile']['tmp_name'],
sprintf('./uploads/%s.%s',
sha1_file($_FILES['upfile']['tmp_name']),
$ext
)
)) {
throw new RuntimeException('Failed to move uploaded file.');
}
echo 'File is uploaded successfully.';
} catch (RuntimeException $e) {
echo $e->getMessage();
}
?>
