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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.
97 lines
4.3 KiB
Markdown
97 lines
4.3 KiB
Markdown
# Authentication
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## Git authentication
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uv allows packages to be installed from Git and supports the following schemes for authenticating
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with private repositories.
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Using SSH:
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- `git+ssh://git@<hostname>/...` (e.g. `git+ssh://git@github.com/astral-sh/uv`)
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- `git+ssh://git@<host>/...` (e.g. `git+ssh://git@github.com-key-2/astral-sh/uv`)
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See the
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[GitHub SSH documentation](https://docs.github.com/en/authentication/connecting-to-github-with-ssh/about-ssh)
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for more details on how to configure SSH.
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Using a password or token:
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- `git+https://<user>:<token>@<hostname>/...` (e.g.
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`git+https://git:github_pat_asdf@github.com/astral-sh/uv`)
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- `git+https://<token>@<hostname>/...` (e.g. `git+https://github_pat_asdf@github.com/astral-sh/uv`)
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- `git+https://<user>@<hostname>/...` (e.g. `git+https://git@github.com/astral-sh/uv`)
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When using a GitHub personal access token, the username is arbitrary. GitHub does not support
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logging in with password directly, although other hosts may. If a username is provided without
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credentials, you will be prompted to enter them.
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If there are no credentials present in the URL and authentication is needed, the
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[Git credential helper](https://git-scm.com/doc/credential-helpers) will be queried.
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## HTTP authentication
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uv supports credentials over HTTP when querying package registries.
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Authentication can come from the following sources, in order of precedence:
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- The URL, e.g., `https://<user>:<password>@<hostname>/...`
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- A [`netrc`](https://everything.curl.dev/usingcurl/netrc) configuration file
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- A [keyring](https://github.com/jaraco/keyring) provider (requires opt-in)
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If authentication is found for a single net location (scheme, host, and port), it will be cached for
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the duration of the command and used for other queries to that net location. Authentication is not
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cached across invocations of uv.
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Note `--keyring-provider subprocess` or `UV_KEYRING_PROVIDER=subprocess` must be provided to enable
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keyring-based authentication.
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Authentication may be used for hosts specified in the following contexts:
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- `index-url`
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- `extra-index-url`
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- `find-links`
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- `package @ https://...`
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See the [`pip` compatibility guide](../pip/compatibility.md#registry-authentication) for details on
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differences from `pip`.
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## Custom CA certificates
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By default, uv loads certificates from the bundled `webpki-roots` crate. The `webpki-roots` are a
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reliable set of trust roots from Mozilla, and including them in uv improves portability and
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performance (especially on macOS, where reading the system trust store incurs a significant delay).
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However, in some cases, you may want to use the platform's native certificate store, especially if
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you're relying on a corporate trust root (e.g., for a mandatory proxy) that's included in your
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system's certificate store. To instruct uv to use the system's trust store, run uv with the
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`--native-tls` command-line flag, or set the `UV_NATIVE_TLS` environment variable to `true`.
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If a direct path to the certificate is required (e.g., in CI), set the `SSL_CERT_FILE` environment
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variable to the path of the certificate bundle, to instruct uv to use that file instead of the
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system's trust store.
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If client certificate authentication (mTLS) is desired, set the `SSL_CLIENT_CERT` environment
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variable to the path of the PEM formatted file containing the certificate followed by the private
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key.
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Finally, if you're using a setup in which you want to trust a self-signed certificate or otherwise
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disable certificate verification, you can instruct uv to allow insecure connections to dedicated
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hosts via the `allow-insecure-host` configuration option. For example, adding the following to
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`pyproject.toml` will allow insecure connections to `example.com`:
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```toml
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[tool.uv]
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allow-insecure-host = ["example.com"]
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```
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`allow-insecure-host` expects to receive a hostname (e.g., `localhost`) or hostname-port pair (e.g.,
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`localhost:8080`), and is only applicable to HTTPS connections, as HTTP connections are inherently
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insecure.
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Use `allow-insecure-host` with caution and only in trusted environments, as it can expose you to
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security risks due to the lack of certificate verification.
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## Authentication with alternative package indexes
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See the [alternative indexes integration guide](../guides/integration/alternative-indexes.md) for
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details on authentication with popular alternative Python package indexes.
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