initial work towards server-side support

sasl/src/mechanisms/plain.rs

@@ -1,51 +0,0 @@
-//! Provides the SASL "PLAIN" mechanism.
-
-use Credentials;
-use Mechanism;
-use Secret;
-
-/// A struct for the SASL PLAIN mechanism.
-pub struct Plain {
-    username: String,
-    password: String,
-}
-
-impl Plain {
-    /// Constructs a new struct for authenticating using the SASL PLAIN mechanism.
-    ///
-    /// It is recommended that instead you use a `Credentials` struct and turn it into the
-    /// requested mechanism using `from_credentials`.
-    pub fn new<N: Into<String>, P: Into<String>>(username: N, password: P) -> Plain {
-        Plain {
-            username: username.into(),
-            password: password.into(),
-        }
-    }
-}
-
-impl Mechanism for Plain {
-    fn name(&self) -> &str {
-        "PLAIN"
-    }
-
-    fn from_credentials(credentials: Credentials) -> Result<Plain, String> {
-        if let Secret::Password(password) = credentials.secret {
-            if let Some(username) = credentials.username {
-                Ok(Plain::new(username, password))
-            } else {
-                Err("PLAIN requires a username".to_owned())
-            }
-        } else {
-            Err("PLAIN requires a password".to_owned())
-        }
-    }
-
-    fn initial(&mut self) -> Result<Vec<u8>, String> {
-        let mut auth = Vec::new();
-        auth.push(0);
-        auth.extend(self.username.bytes());
-        auth.push(0);
-        auth.extend(self.password.bytes());
-        Ok(auth)
-    }
-}