[Rpm-maint] [rpm-software-management/rpm] 'rpm -qlv' does not correctly handle long owner and group name (#544)

[Tomas Hoger]

If you do a `rpm -qlv` of a package where file owner or group name has 8 or more characters, the following problems happen:

* Owner and group names are truncated to 8 characters even if they are longer.
* If owner name has 8 characters (after the truncation mentioned in the previous point), there's no space printed in between owner and group name.

Using `amanda` package from Fedora to demonstrate the problem:

~~~
$ rpm -qlvp amanda-3.5.1-13.el8.x86_64.rpm | tail -n 4
drwxr-xr-x    2 amandabadisk                        0 Aug 12 10:45 /var/lib/amanda
-rw-------    1 amandabadisk                     1181 Aug 12 10:45 /var/lib/amanda/.amandahosts
drwxrws---    2 amandabadisk                        0 Aug 12 10:45 /var/log/amanda
drwxrws---    2 amandabadisk                        0 Aug 12 10:45 /var/log/amanda/amandad
~~~

The owner of those files is `amandabackup`.  That is truncated to `amandaba` and later on printed with group name `disk` without any white space in between as `amandabadisk`.

The first problem seems to occur here:

https://github.com/rpm-software-management/rpm/blob/rpm-4.14.2-release/lib/query.c#L44-L45

I guess you may be more reluctant to fix this, as it can have impact on the output format.

The second is likely here:

https://github.com/rpm-software-management/rpm/blob/rpm-4.14.2-release/lib/query.c#L86-L88

that contains `%-8s%-8s` to print `ownerfield` and `groupfield`.  Adding a space in between would also change format, but I this problem worse than the truncation problem.

*Workaround:*

Use `--queryformat`.  This aims to produce similar output:

~~~
$ rpm -q --qf "[%{FILEMODES:perms} %4{FILENLINKS} %-8{FILEUSERNAME} %-8{FILEGROUPNAME} %10{FILESIZES} %{FILENAMES}\n]" -p amanda-3.5.1-13.el8.x86_64.rpm | tail -n 4
drwxr-xr-x    1 amandabackup disk              0 /var/lib/amanda
-rw-------    1 amandabackup disk           1181 /var/lib/amanda/.amandahosts
drwxrws---    1 amandabackup disk              0 /var/log/amanda
drwxrws---    1 amandabackup disk              0 /var/log/amanda/amandad
~~~

However, fancy date/time formatting, or symlink target printing (with ` -> `) may not be doable that way.  Also note that nlinks info does not match.

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