Crash when a third-party firewall refused to hand over a favicon.ico file

[sm1000]

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Steps to reproduce

1. Create a new credential or go to edit an existing one
2. Add an URL with restricted favicon.ico (for example https://www.autodesk.com/)
3. In the label section select the icon and from the "Pick an icon" window select "Get icon from page".
4. The Nextcloud log file will present an error

Expected behaviour

The expectation is PassMan to ignore the icon request if a third-party firewall refuse to hand over a favicon.ico file.

Solution (valid for PHP 8.0+)

Open the file ../passman/lib/Controller/IconController.php

Go to line 58 and find

if ($icon->icoExists) {
$icon_json['type'] = $icon->icoType;
$icon_json['content'] = base64_encode($icon->icoData);
return new JSONResponse($icon_json);
}

Replace it with

if (isset($icon->icoExists) && $icon->icoExists) {
$icon_json['type'] = isset($icon->icoType) ? $icon->icoType : 'png';
$icon_json['content'] = isset($icon->icoData) ? base64_encode($icon->icoData) : '';
return new JSONResponse($icon_json);
}

Go to line 93 and find

if ($icon->icoExists) {
$data = $icon->icoData;
$type = $icon->icoType;
}

Replace it with

if (isset($icon->icoExists) && $icon->icoExists) {
if (isset($icon->icoData)) {
$data = $icon->icoData;
}
if (isset($icon->icoType)) {
$type = $icon->icoType;
}
}