80 lines
1.9 KiB
Rust
80 lines
1.9 KiB
Rust
use std::default::Default;
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use Header;
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/// A default Header providing the type, key id and algorithm fields.
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#[derive(Debug, PartialEq, Serialize, Deserialize)]
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pub struct DefaultHeader {
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pub typ: Option<HeaderType>,
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pub kid: Option<String>,
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pub alg: Algorithm,
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}
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/// Default value for the header type field.
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#[derive(Debug, PartialEq, Serialize, Deserialize)]
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pub enum HeaderType {
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JWT,
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}
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/// Supported algorithms, each representing a valid signature and digest combination.
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#[derive(Debug, PartialEq, Serialize, Deserialize)]
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pub enum Algorithm {
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HS256,
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HS384,
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HS512,
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RS256,
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RS384,
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RS512
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}
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impl Default for DefaultHeader {
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fn default() -> DefaultHeader {
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DefaultHeader {
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typ: Some(HeaderType::JWT),
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kid: None,
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alg: Algorithm::HS256,
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}
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}
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}
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/// Allow the rest of the library to access the configured algorithm without having to know the
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/// specific type for the header.
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impl Header for DefaultHeader {
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fn alg(&self) -> &Algorithm {
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&(self.alg)
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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 Component;
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use header::{
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Algorithm,
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DefaultHeader,
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HeaderType,
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};
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#[test]
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fn from_base64() {
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let enc = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9";
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let header = DefaultHeader::from_base64(enc).unwrap();
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assert_eq!(header.typ.unwrap(), HeaderType::JWT);
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assert_eq!(header.alg, Algorithm::HS256);
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let enc = "eyJhbGciOiJSUzI1NiIsImtpZCI6IjFLU0YzZyJ9";
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let header = DefaultHeader::from_base64(enc).unwrap();
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assert_eq!(header.kid.unwrap(), "1KSF3g".to_string());
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assert_eq!(header.alg, Algorithm::RS256);
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}
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#[test]
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fn roundtrip() {
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let header: DefaultHeader = Default::default();
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let enc = Component::to_base64(&header).unwrap();
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assert_eq!(header, DefaultHeader::from_base64(&*enc).unwrap());
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}
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}
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