Add a SASL parser.

src/sasl.rs

@@ -0,0 +1,53 @@
+// Copyright (c) 2018 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+use try_from::TryFrom;
+use std::str::FromStr;
+
+use minidom::{Element, IntoAttributeValue};
+
+use error::Error;
+
+use ns;
+use helpers::Base64;
+
+generate_attribute!(Mechanism, "mechanism", {
+    Plain => "PLAIN",
+    ScramSha1 => "SCRAM-SHA-1",
+    Anonymous => "ANONYMOUS",
+});
+
+generate_element_with_text!(Auth, "auth", ns::SASL,
+    [
+        mechanism: Mechanism = "mechanism" => required
+    ],
+    data: Base64<Vec<u8>>
+);
+
+generate_element_with_text!(Challenge, "challenge", ns::SASL,
+    data: Base64<Vec<u8>>
+);
+
+generate_element_with_text!(Response, "response", ns::SASL,
+    data: Base64<Vec<u8>>
+);
+
+generate_element_with_text!(Success, "success", ns::SASL,
+    data: Base64<Vec<u8>>
+);
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_simple() {
+        let elem: Element = "<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='PLAIN'/>".parse().unwrap();
+        let auth = Auth::try_from(elem).unwrap();
+        assert_eq!(auth.mechanism, Mechanism::Plain);
+        assert!(auth.data.is_empty());
+    }
+}