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
7use crate::util::text_node_codecs::{Codec, OptionalCodec, Text};
8use digest::Digest;
9use sha1::Sha1;
10
11generate_element!(
12 /// The main authentication mechanism for components.
13 #[derive(Default)]
14 Handshake, "handshake", COMPONENT,
15 text: (
16 /// If Some, contains the hex-encoded SHA-1 of the concatenation of the
17 /// stream id and the password, and is used to authenticate against the
18 /// server.
19 ///
20 /// If None, it is the successful reply from the server, the stream is now
21 /// fully established and both sides can now exchange stanzas.
22 data: OptionalCodec<Text>
23 )
24);
25
26impl Handshake {
27 /// Creates a successful reply from a server.
28 pub fn new() -> Handshake {
29 Handshake::default()
30 }
31
32 /// Creates an authentication request from the component.
33 pub fn from_password_and_stream_id(password: &str, stream_id: &str) -> Handshake {
34 let input = String::from(stream_id) + password;
35 let hash = Sha1::digest(input.as_bytes());
36 let content = format!("{:x}", hash);
37 Handshake {
38 data: Some(content),
39 }
40 }
41}
42
43#[cfg(test)]
44mod tests {
45 use super::*;
46 use crate::Element;
47
48 #[cfg(target_pointer_width = "32")]
49 #[test]
50 fn test_size() {
51 assert_size!(Handshake, 12);
52 }
53
54 #[cfg(target_pointer_width = "64")]
55 #[test]
56 fn test_size() {
57 assert_size!(Handshake, 24);
58 }
59
60 #[test]
61 fn test_simple() {
62 let elem: Element = "<handshake xmlns='jabber:component:accept'/>"
63 .parse()
64 .unwrap();
65 let handshake = Handshake::try_from(elem).unwrap();
66 assert_eq!(handshake.data, None);
67
68 let elem: Element = "<handshake xmlns='jabber:component:accept'>Coucou</handshake>"
69 .parse()
70 .unwrap();
71 let handshake = Handshake::try_from(elem).unwrap();
72 assert_eq!(handshake.data, Some(String::from("Coucou")));
73 }
74
75 #[test]
76 fn test_constructors() {
77 let handshake = Handshake::new();
78 assert_eq!(handshake.data, None);
79
80 let handshake = Handshake::from_password_and_stream_id("123456", "sid");
81 assert_eq!(
82 handshake.data,
83 Some(String::from("9accec263ab84a43c6037ccf7cd48cb1d3f6df8e"))
84 );
85 }
86}