lemmy/crates/utils/src/claims.rs

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use crate::error::LemmyError;
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use chrono::Utc;
use jsonwebtoken::{decode, encode, DecodingKey, EncodingKey, Header, TokenData, Validation};
use serde::{Deserialize, Serialize};
type Jwt = String;
#[derive(Debug, Serialize, Deserialize)]
pub struct Claims {
/// local_user_id, standard claim by RFC 7519.
pub sub: i32,
pub iss: String,
/// Time when this token was issued as UNIX-timestamp in seconds
pub iat: i64,
}
impl Claims {
pub fn decode(jwt: &str, jwt_secret: &str) -> Result<TokenData<Claims>, LemmyError> {
let mut validation = Validation::default();
validation.validate_exp = false;
validation.required_spec_claims.remove("exp");
let key = DecodingKey::from_secret(jwt_secret.as_ref());
Ok(decode::<Claims>(jwt, &key, &validation)?)
}
pub fn jwt(local_user_id: i32, jwt_secret: &str, hostname: &str) -> Result<Jwt, LemmyError> {
let my_claims = Claims {
sub: local_user_id,
iss: hostname.to_string(),
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iat: Utc::now().timestamp(),
};
let key = EncodingKey::from_secret(jwt_secret.as_ref());
Ok(encode(&Header::default(), &my_claims, &key)?)
}
}