[Bug 48169] New: Downstream: Adapt metadata to be fetched in logic

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48169

Bug ID: 48169
           Summary: Downstream: Adapt metadata to be fetched in logic
           Product: WineHQ Bugzilla
           Version: unspecified
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: bugzilla-unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail]
      Distribution: ---

Referencing
https://github.com/Winetricks/winetricks/issues/1392#issuecomment-545308510

# Proposal
I want to propose adapting bugzilla's metadata to be used in POSIX sh
(winetricks) in such a way that could query the status of the bug, check
end-user's system and depending on used metadata apply a workaround for
end-user's system untill said bug is resolved.

# Reasoning
Currently winetricks is using simple function (w_workaround_winebug) to check
if end-user's system is affected by any winebug which is not very reliable
since it's checking for only for specified wine version which eventually result
in lots of winetricks bugs that are applying unnecesary workarounds for example
dotnet20 removing $W_SYSTEM32_DLLS/msvc?80.dll on wine-4.20 due to the winebug
10467 that affects wine <0.9.49
(https://github.com/Winetricks/winetricks/blob/f194322885b7d674c7b22a8283cbf0...)
and current winetricks is full of issue alike.

I believe that contributing this in winetricks to adapt logic per used
workaround is not an ideall solution since there are bugs about which we don't
know which wine versions they affect (for example
https://bugs.winehq.org/show_bug.cgi?id=47820) and tracking all bugs is heavy
on maintenance.

# Proposed solution
## Better management of bug status
Currently bugzilla is using unreliable way to track bugs that is difficult to
be implemented in this scenario for this to work we would need better status
management to be implemented such as:
- if bug status STAGED is used on end-user's system that is not wine-staging ->
Output error/die.
- if bug status is CONFIRMED, skip applying workaround

etc..

## More options in 'Version:' metadata
We can also use wine version which would require more options in "Version:" 
metadata that allows us to adapt affected versions in said scenario

example winebug specifies that affected wine versions are 4.13, 4.15 and
4.18~4.20 -> If end-user is using affected version attempt to apply a
workaround or output an error

## Injecting logic in winetricks
In theory there could also be a section in metadata that allows us to check
end-user's wine for problematic codeblock for example winebug
https://bugs.winehq.org/show_bug.cgi?id=22053#c65 which was affected by bug in
gcc where on some system we can use `strings -a wine |grep "GCC"` or `readelf
--debug-dump=info wineserver | grep DW_AT_producer` to check which gcc was used
to build said wine that can be implemented in the logic and can be placed on
the bug itself.

# Possible problems
- End-users with slow internet connection would have to rely on hard-codded
logic unless bugzilla would allow us to fetch a raw file with metadata on the
bug (instead of using 'curl' piping to grep and posix regexing whole page)
- End-user without an internet would have to still rely on hard-coded logic
unless there is some automation done that updates the code automatically based
on bug status.

---

I'm wiling to work on implementation assuming changes made in bugzilla since i
would also like to use this in my fork
(https://github.com/Kreytricks/kreytricks)