Fix(XML): Sanitize invalid char

[stonebuzz]

Checklist before requesting a review

Please delete options that are not relevant.

• I have performed a self-review of my code.
• I have added tests (when available) that prove my fix is effective or that my feature works.
• I have updated the CHANGELOG with a short functional description of the fix or new feature.
• This change requires a documentation update.

Description

SCCM stores certain metadata in fixed-length NCHAR database fields. In some cases, these fields may contain trailing null bytes, residual binary data, or Unicode non-characters such as U+FFFE and U+FFFF. When this data is exported into XML files, it can introduce characters that are not valid according to the XML 1.0 specification.

As a result, the inventory import or push process may fail with an XML parsing error, preventing successful processing of the generated file.

Example of a corrupted value observed in production environments:

<PUBLISHER>Intel(R) Corporation쩗ኮ᠀耀��</PUBLISHER>

And should be

<PUBLISHER>Intel(R) Corporation쩗ኮ᠀耀��</PUBLISHER>

In this example, unexpected trailing characters are appended to the publisher name. These characters originate from corrupted or improperly sanitized database content and generate invalid XML output, leading to parsing failures during downstream processing.

Fixes #181

Screenshots (if appropriate):

[tolemac]

@stonebuzz the xml file is now ok:

Text: <PUBLISHER>Intel(R) Corporation쩗ኮ᠀耀</PUBLISHER>

xmlvalidation tell me "no errors were found" in file.

But the error continue, the sccm.log says:

2026-06-03 08:44:31 [473@SUInventario]
[Config 1] Can't load file: /var/lib/glpi/_plugins/sccm/xml/1/16797877.ocs
An error occurred

I have launch several times and I have ensure the new file is generated but error persists..

[stonebuzz]

@tolemac
can you retry ?

best regards

[tolemac]

👍 done!! [Config 1] Push OK - 16797877

Good job, now this work fine!