Uppercase characters in pypi packages names are not allowed for upload

[gd197]

Description

Python packages with a character in uppercase cannot be uploaded in package registry.
eg : Pygments-2.13.0-py3-none-any.whl from pypi.org
or
PyQt5_Qt5-5.15.2-py3-none-manylinux2014_x86_64.whl from pypi.org
lead to :
2022/09/01 08:57:24 ...ackages/pypi/pypi.go:34:func1() [T] [631057d4] plainTextInternal (status=400): invalid name or version
By changing the wheel file name and the name entry in METADATA file of the package by lowercase solve the issue.
could be related to :
routers/api/packages/pypi/pypi.go
var nameMatcher = regexp.MustCompile('\A[a-z0-9\.\-_]+\z')
sorry for not being in a situation currently to provide a correct (and tested) pull request but I'll work on it in the future

Gitea Version

1.17.1

Can you reproduce the bug on the Gitea demo site?

No

Log Gist

No response

Screenshots

No response

Git Version

2.27.0

Operating System

RHEL8.5

How are you running Gitea?

official github 1.17.1 delivery

Database

MySQL

[KN4CK3R]

As per PEP 426 the only valid characters in a name are the ASCII alphabet, ASCII numbers, ., -, and _. The name should be lowercased with all runs of the characters ., -, or _ replaced with a single - character.

I misinterpreted the last sentence, uppercase characters are fine. Will send a PR.

[gd197]

I may be wrong but I do not see the PR backport in 1.17.3 despite in roadmap ?