// Copyright 2022 Adobe. All rights reserved.
// This file is licensed to you under the Apache License,
// Version 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
// or the MIT license (http://opensource.org/licenses/MIT),
// at your option.
// Unless required by applicable law or agreed to in writing,
// this software is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR REPRESENTATIONS OF ANY KIND, either express or
// implied. See the LICENSE-MIT and LICENSE-APACHE files for the
// specific language governing permissions and limitations under
// each license.
use serde::{Deserialize, Serialize};
use std::fmt;
/// Hashed Uri stucture as defined by C2PA spec
/// It is annotated to produce the correctly tagged cbor serialization
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
pub struct HashedUri {
url: String, // URI stored as tagged cbor
#[serde(skip_serializing_if = "Option::is_none")]
alg: Option<String>,
#[serde(with = "serde_bytes")]
hash: Vec<u8>, // hash stored as cbor byte string
}
impl HashedUri {
pub fn new(url: String, alg: Option<String>, hash_bytes: &[u8]) -> Self {
Self {
url,
alg,
hash: hash_bytes.to_vec(),
}
}
pub fn url(&self) -> String {
self.url.clone()
}
pub fn is_relative_url(&self) -> bool {
crate::jumbf::labels::manifest_label_from_uri(&self.url).is_none()
}
pub fn alg(&self) -> Option<String> {
self.alg.clone()
}
pub fn hash(&self) -> Vec<u8> {
self.hash.clone()
}
#[cfg(feature = "file_io")]
pub(crate) fn update_hash(&mut self, hash: Vec<u8>) {
self.hash = hash;
}
}
impl fmt::Display for HashedUri {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "url: {}, alg: {:?}, hash", self.url, self.alg)
}
}