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use anyhow::{Result, anyhow};
use serde::{Deserialize, Serialize};
#[derive(Debug, Serialize, Deserialize)]
pub struct Keylist {
pub metadata: Metadata,
pub keys: Vec<Key>,
}
impl Keylist {
pub fn new(metadata: Metadata) -> Self {
Self { metadata, keys: Vec::new() }
}
pub fn sign<'a>(
self,
sign: Box<dyn Fn(&str) -> Result<String> + 'a>,
) -> Result<SignedKeylist> {
let keylist = serde_json::to_string(&self)?;
let sig = sign(&keylist)?;
Ok(SignedKeylist { keylist, sig })
}
}
#[derive(Debug, Serialize, Deserialize)]
pub struct Metadata {
pub signature_uri: String,
#[serde(skip_serializing_if = "Option::is_none")]
pub keyserver: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub comment: Option<String>,
}
#[derive(Debug, Serialize, Deserialize)]
pub struct Key {
pub fingerprint: String,
#[serde(skip_serializing_if = "Option::is_none")]
pub name: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub email: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub keyserver: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub comment: Option<String>,
}
pub struct SignedKeylist {
pub keylist: String,
pub sig: String,
}
impl SignedKeylist {
pub fn verify(
&self,
verify_sig: Box<dyn FnOnce(&[u8], &str) -> Result<bool>>,
) -> Result<Keylist> {
let verify: Result<bool> =
verify_sig(self.keylist.as_bytes(), &self.sig);
if verify.is_ok() && *verify.as_ref().unwrap() {
Ok(serde_json::from_str(&self.keylist)
.map_err(|e| anyhow!(e))?)
} else {
Err(anyhow!(
"Signature verification failed {:?}",
verify
))
}
}
pub fn from_url(url: String) -> Result<Self> {
let keylist = reqwest::blocking::get(&url)?.text()?;
let kl: Keylist = serde_json::from_str(&keylist)
.map_err(|e| anyhow!(e))?;
let sig = reqwest::blocking::get(&kl.metadata.signature_uri)?.text()?;
Ok(SignedKeylist { keylist, sig })
}
}