Uploading file with PHP and PowerShell

Question

I want to upload to my website via PowerShell.

When I use a simple HTML file the uploaded file appears in the folder, but when I use PowerShell I get the error code 200 and the file is not uploaded.

I am using this code (source: PHP File Upload):

PHP:

<?php
$target_dir = "uploads/";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
$uploadOk = 1;
$imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));

// Check if image file is a actual image or fake image
if(isset($_POST["submit"])) {
  $check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
  if($check !== false) {
    echo "File is an image - " . $check["mime"] . ".";
    $uploadOk = 1;
  } else {
    echo "File is not an image.";
    $uploadOk = 0;
  }
}

// Check if file already exists
if (file_exists($target_file)) {
  echo "Sorry, file already exists.";
  $uploadOk = 0;
}

// Check file size
if ($_FILES["fileToUpload"]["size"] > 500000) {
  echo "Sorry, your file is too large.";
  $uploadOk = 0;
}

// Allow certain file formats
if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg"
&& $imageFileType != "gif" ) {
  echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
  $uploadOk = 0;
}

// Check if $uploadOk is set to 0 by an error
if ($uploadOk == 0) {
  echo "Sorry, your file was not uploaded.";
// if everything is ok, try to upload file
} else {
  if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) {
    echo "The file ". htmlspecialchars( basename( $_FILES["fileToUpload"]["name"])). " has been uploaded.";
  } else {
    echo "Sorry, there was an error uploading your file.";
  }
}
?>

HTML:

<!DOCTYPE html>
<html>
<body>

<form action="upload.php" method="post" enctype="multipart/form-data">
  Select image to upload:
  <input type="file" name="fileToUpload" id="fileToUpload">
  <input type="submit" value="Upload Image" name="submit">
</form>

</body>
</html>

and PowerShell:

Invoke-Webrequest -URI "https://example.com/upload.php" -Method POST -InFile "C:\Users\markus\Desktop\abc.png" -Debug

This is the error/debug message that I get:

DEBUG: POST with -1-byte payload
DEBUG: received 114-byte response of content type text/html; charset=UTF-8


StatusCode        : 200
StatusDescription : OK
Content           : 
                    Sorry, file already exists.Sorry, only JPG, JPEG, PNG & GIF files are allowed.Sorry, your file was not uploaded.
RawContent        : HTTP/1.1 200 OK
                    Vary: User-Agent
                    Content-Length: 114
                    Content-Type: text/html; charset=UTF-8
                    Date: Sun, 03 Apr 2022 17:29:37 GMT
                    Server: Apache/2.4.53 (Unix)
                    X-Powered-By: PHP/8.0.17

So, what I am doing false and how should I use the Invoke-WebRequest command correct to upload an image?

lordisp · Accepted Answer · 2022-04-03 18:33:43Z

1

There's nothing wrong with your PS-Script

200 is actually not an error but an success http status-code. Would the PS script upload the file if no file is available? If yes, I would simple delete the existing file:

Replace the block Check if file already exists with Delete file if existing

//  Delete file if existing
if (file_exists($target_file)) {
    $uploadOk = unlink($target_file) ? 0 : 1;
}

answered Apr 3, 2022 at 18:33

lordisp

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7 Comments

jjb Over a year ago

I am sorry. The PHP-script does not work with your change too. I get this: Sorry, only JPG, JPEG, PNG & GIF files are allowed.Sorry, your file was not uploaded.

lordisp Over a year ago

just for testing purposes please comment out wit // the five lines below // Allow certain file formats

jjb Over a year ago

It doesn't work either. Now I get this: Sorry, file already exists.Sorry, your file was not uploaded.

lordisp Over a year ago

you may misunderstood. I've created a gist with the changes. Please try and let me know.

jjb Over a year ago

After I have copied and tested your code, I get this information: Sorry, your file was not uploaded.

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