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use std::env;
use std::fs::File;
use std::io::Read;
extern crate jsonwebtoken as jwt;
#[macro_use]
extern crate serde_derive;
extern crate serde_json;
use jwt::{decode, Validation, Algorithm};
#[derive(Debug, Serialize, Deserialize)]
struct Claims {
aud: String,
exp: u64,
iss: String,
sub: String,
scope: String,
}
fn main() {
let args: Vec<String> = env::args().collect();
let keyfile = &args[1];
println!("reading key from {}", keyfile);
let mut f = File::open(keyfile).unwrap();
let mut key = Vec::new();
f.read_to_end(&mut key).unwrap();
println!("key len {}", key.len());
println!("finding tokens on command line");
let token = &args[2];
println!("token {}", token);
decode_token(&token, &key);
}
fn decode_token(token: &str, key: &[u8]) {
let v = Validation::new(Algorithm::RS512);
let data = match decode::<Claims>(&token, key, &v) {
Ok(c) => c,
Err(err) => match *err.kind() {
_ => {
eprintln!("ERROR: {:?}", err);
panic!();
},
},
};
let claims = data.claims;
let j = serde_json::to_string_pretty(&claims).expect("JSON error");
println!("{}", j);
}
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