[ruby/net-http] Decode user and password from env configured proxy

If someone sets an env variable defining a http_proxy, containing a
username / password with percent-encoded characters, then the resulting
base64 encoded auth header will be wrong.

For example, suppose a username is `Y\X` and the password is `R%S] ?X`.
Properly URL encoded the proxy url would be:

    http://Y%5CX:R%25S%5D%20%3FX@proxy.example:8000

The resulting proxy auth header should be: `WVxYOlIlU10gP1g=`, but the
getters defined by ruby StdLib `URI` return a username `Y%5CX` and
password `R%25S%5D%20%3FX`, resulting in `WSU1Q1g6UiUyNVMlNUQlMjAlM0ZY`.
As a result the proxy will deny the request.

Please note that this is my first contribution to the ruby ecosystem, to
standard lib especially and I am not a ruby developer.

References:

- https://gitlab.com/gitlab-org/gitlab/-/issues/289836
- https://bugs.ruby-lang.org/projects/ruby-master/repository/trunk/revisions/58461
- https://bugs.ruby-lang.org/issues/17542

https://github.com/ruby/net-http/commit/e57d4f38aa

0 files changed, 0 insertions, 0 deletions