First working version

libs/jsonwebtoken/src/serialization.rs

@@ -0,0 +1,42 @@
+use base64;
+use serde::de::DeserializeOwned;
+use serde::ser::Serialize;
+use serde_json::{from_str, to_string, Value};
+use serde_json::map::Map;
+
+use errors::{Result};
+use header::Header;
+
+
+/// The return type of a successful call to decode
+#[derive(Debug)]
+pub struct TokenData<T> {
+    /// The decoded JWT header
+    pub header: Header,
+    /// The decoded JWT claims
+    pub claims: T
+}
+
+/// Serializes to JSON and encodes to base64
+pub fn to_jwt_part<T: Serialize>(input: &T) -> Result<String> {
+    let encoded = to_string(input)?;
+    Ok(base64::encode_config(encoded.as_bytes(), base64::URL_SAFE_NO_PAD))
+}
+
+/// Decodes from base64 and deserializes from JSON to a struct
+pub fn from_jwt_part<B: AsRef<str>, T: DeserializeOwned>(encoded: B) -> Result<T> {
+    let decoded = base64::decode_config(encoded.as_ref(), base64::URL_SAFE_NO_PAD)?;
+    let s = String::from_utf8(decoded)?;
+
+    Ok(from_str(&s)?)
+}
+
+/// Decodes from base64 and deserializes from JSON to a struct AND a hashmap
+pub fn from_jwt_part_claims<B: AsRef<str>, T: DeserializeOwned>(encoded: B) -> Result<(T, Map<String, Value>)> {
+    let decoded = base64::decode_config(encoded.as_ref(), base64::URL_SAFE_NO_PAD)?;
+    let s = String::from_utf8(decoded)?;
+
+    let claims: T = from_str(&s)?;
+    let map: Map<_,_> = from_str(&s)?;
+    Ok((claims, map))
+}