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use gpgme::{Context, Data, Key};
use std::fs::File;
use std::io::BufReader;
use std::path::Path;
pub enum ScanResult {
Trusted,
Unsigned,
Untrusted,
}
pub trait OpenPGPOpertaions {
fn get_trusted_keys(&self, keys: &[Key]) -> Vec<Key>;
fn check_sign(
&self,
sig_path: &Path,
context: &Context,
file: &Path,
) -> Result<ScanResult, gpgme::Error>;
}
impl OpenPGPOpertaions for Key {
fn get_trusted_keys(&self, keys: &[Key]) -> Vec<Key> {
let mut trusted_keys = Vec::new();
for key in keys {
if key.can_encrypt() || key.can_sign() {
trusted_keys.push(key.clone());
}
}
trusted_keys
}
fn check_sign(
&self,
sig_path: &Path,
context: &Context,
file: &Path,
) -> Result<ScanResult, gpgme::Error> {
let mut ctx = Context::from_protocol(gpgme::Protocol::OpenPgp)?;
let file_reader = BufReader::new(File::open(file)?);
let sig_reader = BufReader::new(File::open(sig_path)?);
let sig_data = Data::from_reader(sig_reader)
.map_err(|e| gpgme::Error::from(std::io::Error::other(e)))?;
let file_data = Data::from_reader(file_reader)
.map_err(|e| gpgme::Error::from(std::io::Error::other(e)))?;
let result = ctx.verify_detached(sig_data, file_data);
if result.is_ok() {
Ok(ScanResult::Trusted)
} else {
Ok(ScanResult::Unsigned)
}
}
}
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