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Add support for --trusted-host (#6591)

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## Summary

This PR revives https://github.com/astral-sh/uv/pull/4944, which I think
was a good start towards adding `--trusted-host`. Last night, I tried to
add `--trusted-host` with a custom verifier, but we had to vendor a lot
of `reqwest` code and I eventually hit some private APIs. I'm not
confident that I can implement it correctly with that mechanism, and
since this is security, correctness is the priority.

So, instead, we now use two clients and multiplex between them.

Closes https://github.com/astral-sh/uv/issues/1339.

## Test Plan

Created self-signed certificate, and ran `python3 -m http.server --bind
127.0.0.1 4443 --directory . --certfile cert.pem --keyfile key.pem` from
the packse index directory.

Verified that `cargo run pip install
transitive-yanked-and-unyanked-dependency-a-0abad3b6 --index-url
https://127.0.0.1:8443/simple-html` failed with:

```
error: Request failed after 3 retries
  Caused by: error sending request for url (https://127.0.0.1:8443/simple-html/transitive-yanked-and-unyanked-dependency-a-0abad3b6/)
  Caused by: client error (Connect)
  Caused by: invalid peer certificate: Other(OtherError(CaUsedAsEndEntity))
```

Verified that `cargo run pip install
transitive-yanked-and-unyanked-dependency-a-0abad3b6 --index-url
'https://127.0.0.1:8443/simple-html' --trusted-host '127.0.0.1:8443'`
failed with the expected error (invalid resolution) and made valid
requests.

Verified that `cargo run pip install
transitive-yanked-and-unyanked-dependency-a-0abad3b6 --index-url
'https://127.0.0.1:8443/simple-html' --trusted-host '127.0.0.2' -n` also
failed.
This commit is contained in:
Charlie Marsh 2024-08-27 09:36:50 -04:00 • committed by GitHub
parent ce749591de
commit d86075fc1e
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31 changed files with 808 additions and 125 deletions
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17
docs/configuration/authentication.md
View file

@ -74,6 +74,23 @@ If client certificate authentication (mTLS) is desired, set the `SSL_CLIENT_CERT
variable to the path of the PEM formatted file containing the certificate followed by the private
key.
Finally, if you're using a setup in which you want to trust a self-signed certificate or otherwise
disable certificate verification, you can instruct uv to allow insecure connections to dedicated
hosts via the `allow-insecure-host` configuration option. For example, adding the following to
`pyproject.toml` will allow insecure connections to `example.com`:
```toml
[tool.uv]
allow-insecure-host = ["example.com"]
```
`allow-insecure-host` expects to receive a hostname (e.g., `localhost`) or hostname-port pair (e.g.,
`localhost:8080`), and is only applicable to HTTPS connections, as HTTP connections are inherently
insecure.
Use `allow-insecure-host` with caution and only in trusted environments, as it can expose you to
security risks due to the lack of certificate verification.
## Authentication with alternative package indexes
See the [alternative indexes integration guide](../guides/integration/alternative-indexes.md) for