Line data    Source code

       1              : use super::{
       2              :     ComputeCredentialKeys, ComputeCredentials, ComputeUserInfo, ComputeUserInfoNoEndpoint,
       3              : };
       4              : use crate::{
       5              :     auth::{self, AuthFlow},
       6              :     console::AuthSecret,
       7              :     context::RequestMonitoring,
       8              :     sasl,
       9              :     stream::{self, Stream},
      10              : };
      11              : use tokio::io::{AsyncRead, AsyncWrite};
      12              : use tracing::{info, warn};
      13              : 
      14              : /// Compared to [SCRAM](crate::scram), cleartext password auth saves
      15              : /// one round trip and *expensive* computations (>= 4096 HMAC iterations).
      16              : /// These properties are benefical for serverless JS workers, so we
      17              : /// use this mechanism for websocket connections.
      18            2 : pub async fn authenticate_cleartext(
      19            2 :     ctx: &mut RequestMonitoring,
      20            2 :     info: ComputeUserInfo,
      21            2 :     client: &mut stream::PqStream<Stream<impl AsyncRead + AsyncWrite + Unpin>>,
      22            2 :     secret: AuthSecret,
      23            2 : ) -> auth::Result<ComputeCredentials> {
      24            2 :     warn!("cleartext auth flow override is enabled, proceeding");
      25            2 :     ctx.set_auth_method(crate::context::AuthMethod::Cleartext);
      26            2 : 
      27            2 :     // pause the timer while we communicate with the client
      28            2 :     let paused = ctx.latency_timer.pause(crate::metrics::Waiting::Client);
      29              : 
      30            2 :     let auth_flow = AuthFlow::new(client)
      31            2 :         .begin(auth::CleartextPassword(secret))
      32            0 :         .await?;
      33            2 :     drop(paused);
      34              :     // cleartext auth is only allowed to the ws/http protocol.
      35              :     // If we're here, we already received the password in the first message.
      36              :     // Scram protocol will be executed on the proxy side.
      37            8 :     let auth_outcome = auth_flow.authenticate().await?;
      38              : 
      39            2 :     let keys = match auth_outcome {
      40            2 :         sasl::Outcome::Success(key) => key,
      41            0 :         sasl::Outcome::Failure(reason) => {
      42            0 :             info!("auth backend failed with an error: {reason}");
      43            0 :             return Err(auth::AuthError::auth_failed(&*info.user));
      44              :         }
      45              :     };
      46              : 
      47            2 :     Ok(ComputeCredentials { info, keys })
      48            2 : }
      49              : 
      50              : /// Workaround for clients which don't provide an endpoint (project) name.
      51              : /// Similar to [`authenticate_cleartext`], but there's a specific password format,
      52              : /// and passwords are not yet validated (we don't know how to validate them!)
      53            2 : pub async fn password_hack_no_authentication(
      54            2 :     ctx: &mut RequestMonitoring,
      55            2 :     info: ComputeUserInfoNoEndpoint,
      56            2 :     client: &mut stream::PqStream<Stream<impl AsyncRead + AsyncWrite + Unpin>>,
      57            2 : ) -> auth::Result<ComputeCredentials> {
      58            2 :     warn!("project not specified, resorting to the password hack auth flow");
      59            2 :     ctx.set_auth_method(crate::context::AuthMethod::Cleartext);
      60            2 : 
      61            2 :     // pause the timer while we communicate with the client
      62            2 :     let _paused = ctx.latency_timer.pause(crate::metrics::Waiting::Client);
      63              : 
      64            2 :     let payload = AuthFlow::new(client)
      65            2 :         .begin(auth::PasswordHack)
      66            0 :         .await?
      67            2 :         .get_password()
      68            2 :         .await?;
      69              : 
      70            2 :     info!(project = &*payload.endpoint, "received missing parameter");
      71              : 
      72              :     // Report tentative success; compute node will check the password anyway.
      73            2 :     Ok(ComputeCredentials {
      74            2 :         info: ComputeUserInfo {
      75            2 :             user: info.user,
      76            2 :             options: info.options,
      77            2 :             endpoint: payload.endpoint,
      78            2 :         },
      79            2 :         keys: ComputeCredentialKeys::Password(payload.password),
      80            2 :     })
      81            2 : }