1// Copyright (c) 2018 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
 2//
 3// This Source Code Form is subject to the terms of the Mozilla Public
 4// License, v. 2.0. If a copy of the MPL was not distributed with this
 5// file, You can obtain one at http://mozilla.org/MPL/2.0/.
 6
 7#![deny(missing_docs)]
 8
 9use helpers::PlainText;
10use sha1::Sha1;
11use digest::Digest;
12
13generate_element!(
14    /// The main authentication mechanism for components.
15    Handshake, "handshake", COMPONENT,
16    text: (
17        /// If Some, contains the hex-encoded SHA-1 of the concatenation of the
18        /// stream id and the password, and is used to authenticate against the
19        /// server.
20        ///
21        /// If None, it is the successful reply from the server, the stream is now
22        /// fully established and both sides can now exchange stanzas.
23        data: PlainText<Option<String>>
24    )
25);
26
27impl Handshake {
28    /// Creates a successful reply from a server.
29    pub fn new() -> Handshake {
30        Handshake {
31            data: None,
32        }
33    }
34
35    /// Creates an authentication request from the component.
36    pub fn from_password_and_stream_id(password: &str, stream_id: &str) -> Handshake {
37        let input = String::from(stream_id) + password;
38        let hash = Sha1::digest(input.as_bytes());
39        let content = format!("{:x}", hash);
40        Handshake {
41            data: Some(content),
42        }
43    }
44}
45
46#[cfg(test)]
47mod tests {
48    use super::*;
49    use try_from::TryFrom;
50    use minidom::Element;
51
52    #[test]
53    fn test_simple() {
54        let elem: Element = "<handshake xmlns='jabber:component:accept'/>".parse().unwrap();
55        let handshake = Handshake::try_from(elem).unwrap();
56        assert_eq!(handshake.data, None);
57
58        let elem: Element = "<handshake xmlns='jabber:component:accept'>Coucou</handshake>".parse().unwrap();
59        let handshake = Handshake::try_from(elem).unwrap();
60        assert_eq!(handshake.data, Some(String::from("Coucou")));
61    }
62
63    #[test]
64    fn test_constructors() {
65        let handshake = Handshake::new();
66        assert_eq!(handshake.data, None);
67
68        let handshake = Handshake::from_password_and_stream_id("123456", "sid");
69        assert_eq!(handshake.data, Some(String::from("9accec263ab84a43c6037ccf7cd48cb1d3f6df8e")));
70    }
71}