Module sasl

Sasl

This module provides support for SASL (Simple Authentication and Security Layer), as specified in RFC4422

It allows one to use these mechanisms to authenticate with a Pop3 compatible server and implement more mechanisms if they are needed.

The mechanisms for PLAIN and XOAUTH2 are already present as they are commonly used.

Implementing a mechanism is simple:

pub struct MyAuthenticator {
    username: String,
    secret_token: String,
}

impl Authenticator for MyAuthenticator {
    fn mechanism(&self) -> &str {
        "SUPER_COOL_MECHANISM"
    }

    fn auth(&self) -> Option<String> {
        // Specify your cool format
        Some(format!("\x00{}\x00{}", self.username, self.secret_token))
    }

    async fn handle<'a, S: Read + Write + Unpin + Send>(
        &self,
        communicator: Communicator<'a, S>,
    ) -> Result<()> {
        let challenge = communicator.next_challenge().await?;

        let response = mechanism_lib::handle_challenge(challenge)?;

        communicator.send(response).await?;

        Ok(())
    }
}

Structs

Communicator

OAuth2Authenticator

A simple mechanism to authenticate via OAuth2

PlainAuthenticator

A simple mechanism to authenticate via PLAIN

Traits

Authenticator