2fe3c0cef2
We can do this because we know that `x < y` cannot create a `TextCodec<T>` for any `T`. This is because `<` is guaranteed to return a boolean value, and we simply don't implement `TextCodec<T>` on bool.
88 lines
2.7 KiB
Rust
88 lines
2.7 KiB
Rust
// Copyright (c) 2018 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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use xso::{text::FixedHex, AsXml, FromXml};
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use crate::ns;
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use digest::Digest;
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use sha1::Sha1;
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/// The main authentication mechanism for components.
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#[derive(FromXml, AsXml, PartialEq, Debug, Clone, Default)]
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#[xml(namespace = ns::COMPONENT, name = "handshake")]
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pub struct Handshake {
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/// If Some, contains the hex-encoded SHA-1 of the concatenation of the
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/// stream id and the password, and is used to authenticate against the
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/// server.
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///
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/// If None, it is the successful reply from the server, the stream is now
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/// fully established and both sides can now exchange stanzas.
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#[xml(text(codec = FixedHex<20>))]
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pub data: Option<[u8; 20]>,
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}
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impl Handshake {
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/// Creates a successful reply from a server.
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pub fn new() -> Handshake {
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Handshake::default()
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}
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/// Creates an authentication request from the component.
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pub fn from_password_and_stream_id(password: &str, stream_id: &str) -> Handshake {
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let input = String::from(stream_id) + password;
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let hash = Sha1::digest(input.as_bytes());
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Handshake {
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data: Some(hash.into()),
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}
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use minidom::Element;
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#[test]
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fn test_size() {
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assert_size!(Handshake, 21);
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}
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#[test]
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fn test_simple() {
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let elem: Element = "<handshake xmlns='jabber:component:accept'/>"
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.parse()
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.unwrap();
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let handshake = Handshake::try_from(elem).unwrap();
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assert_eq!(handshake.data, None);
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let elem: Element = "<handshake xmlns='jabber:component:accept'>9accec263ab84a43c6037ccf7cd48cb1d3f6df8e</handshake>"
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.parse()
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.unwrap();
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let handshake = Handshake::try_from(elem).unwrap();
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assert_eq!(
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handshake.data,
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Some([
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0x9a, 0xcc, 0xec, 0x26, 0x3a, 0xb8, 0x4a, 0x43, 0xc6, 0x03, 0x7c, 0xcf, 0x7c, 0xd4,
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0x8c, 0xb1, 0xd3, 0xf6, 0xdf, 0x8e
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])
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);
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}
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#[test]
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fn test_constructors() {
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let handshake = Handshake::new();
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assert_eq!(handshake.data, None);
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let handshake = Handshake::from_password_and_stream_id("123456", "sid");
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assert_eq!(
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handshake.data,
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Some([
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0x9a, 0xcc, 0xec, 0x26, 0x3a, 0xb8, 0x4a, 0x43, 0xc6, 0x03, 0x7c, 0xcf, 0x7c, 0xd4,
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0x8c, 0xb1, 0xd3, 0xf6, 0xdf, 0x8e
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])
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);
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}
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}
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