[Bug]: OC\Archive\TAR only partially extracts tar.gz file

[marcelklehr]

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

File is available here: https://download.nextcloud.com/server/apps/text2image_stablediffusion/stable-diffusion-xl-base-1.0/

Steps to reproduce

$tarManager = new TAR($archivePath);
$tarManager->extract($__DIR__ );

Result:

ls apps/text2image_stablediffusion/models/stable-diffusion-xl
unet  vae_decoder  vae_encoder

Expected behavior

Should extract all folders

Installation method

Community Manual installation with Archive

Nextcloud Server version

master

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.1

Web server

None

Database engine version

SQlite

Is this bug present after an update or on a fresh install?

Fresh Nextcloud Server install

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

No response

List of activated Apps

No response

Nextcloud Signing status

No response

Nextcloud Logs

{"reqId":"gziLpSYLVdLw0IMx6nQD","level":3,"time":"2024-01-09T11:00:45+00:00","remoteAddr":"","user":"--","app":"PHP","method":"","url":"--","message":"Uninitialized string offset 2 at /home/marcel/code/server/3rdparty/pear/archive_tar/Archive/Tar.php#1790","userAgent":"--","version":"29.0.0.3","data":{"app":"PHP"}}
{"reqId":"gziLpSYLVdLw0IMx6nQD","level":3,"time":"2024-01-09T11:00:45+00:00","remoteAddr":"","user":"--","app":"PHP","method":"","url":"--","message":"Uninitialized string offset 3 at /home/marcel/code/server/3rdparty/pear/archive_tar/Archive/Tar.php#1790","userAgent":"--","version":"29.0.0.3","data":{"app":"PHP"}}
{"reqId":"gziLpSYLVdLw0IMx6nQD","level":3,"time":"2024-01-09T11:00:45+00:00","remoteAddr":"","user":"--","app":"PHP","method":"","url":"--","message":"Uninitialized string offset 4 at /home/marcel/code/server/3rdparty/pear/archive_tar/Archive/Tar.php#1790","userAgent":"--","version":"29.0.0.3","data":{"app":"PHP"}}
{"reqId":"gziLpSYLVdLw0IMx6nQD","level":3,"time":"2024-01-09T11:00:45+00:00","remoteAddr":"","user":"--","app":"PHP","method":"","url":"--","message":"Uninitialized string offset 5 at /home/marcel/code/server/3rdparty/pear/archive_tar/Archive/Tar.php#1790","userAgent":"--","version":"29.0.0.3","data":{"app":"PHP"}}
{"reqId":"gziLpSYLVdLw0IMx6nQD","level":3,"time":"2024-01-09T11:00:45+00:00","remoteAddr":"","user":"--","app":"PHP","method":"","url":"--","message":"Uninitialized string offset 6 at /home/marcel/code/server/3rdparty/pear/archive_tar/Archive/Tar.php#1790","userAgent":"--","version":"29.0.0.3","data":{"app":"PHP"}}
{"reqId":"gziLpSYLVdLw0IMx6nQD","level":3,"time":"2024-01-09T11:00:45+00:00","remoteAddr":"","user":"--","app":"PHP","method":"","url":"--","message":"Uninitialized string offset 7 at /home/marcel/code/server/3rdparty/pear/archive_tar/Archive/Tar.php#1790","userAgent":"--","version":"29.0.0.3","data":{"app":"PHP"}}
{"reqId":"gziLpSYLVdLw0IMx6nQD","level":3,"time":"2024-01-09T11:00:45+00:00","remoteAddr":"","user":"--","app":"PHP","method":"","url":"--","message":"Uninitialized string offset 8 at /home/marcel/code/server/3rdparty/pear/archive_tar/Archive/Tar.php#1790","userAgent":"--","version":"29.0.0.3","data":{"app":"PHP"}}
{"reqId":"gziLpSYLVdLw0IMx6nQD","level":3,"time":"2024-01-09T11:00:45+00:00","remoteAddr":"","user":"--","app":"PHP","method":"","url":"--","message":"Uninitialized string offset 9 at /home/marcel/code/server/3rdparty/pear/archive_tar/Archive/Tar.php#1790","userAgent":"--","version":"29.0.0.3","data":{"app":"PHP"}}
{"reqId":"gziLpSYLVdLw0IMx6nQD","level":3,"time":"2024-01-09T11:00:45+00:00","remoteAddr":"","user":"--","app":"PHP","method":"","url":"--","message":"Uninitialized string offset 10 at /home/marcel/code/server/3rdparty/pear/archive_tar/Archive/Tar.php#1790","userAgent":"--","version":"29.0.0.3","data":{"app":"PHP"}}
{"reqId":"gziLpSYLVdLw0IMx6nQD","level":3,"time":"2024-01-09T11:00:45+00:00","remoteAddr":"","user":"--","app":"PHP","method":"","url":"--","message":"Uninitialized string offset 11 at /home/marcel/code/server/3rdparty/pear/archive_tar/Archive/Tar.php#1790","userAgent":"--","version":"29.0.0.3","data":{"app":"PHP"}}

Additional info

No response

[joshtrichards]

Might be best reported to the dependency:

https://github.com/pear/Archive_Tar

The original PR that added the code this is occurring in:

pear/Archive_Tar#15

[marcelklehr]

Upstream issue pear/Archive_Tar#50