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use std::time::{SystemTime, Duration};
use sequoia_openpgp as openpgp;
use openpgp::Result;
use openpgp::cert::prelude::*;
use openpgp::packet::prelude::*;
use openpgp::parse::Parse;
use openpgp::policy::Policy;
use openpgp::serialize::Serialize;
use openpgp::types::SignatureType;
use crate::parse_duration;
use crate::SECONDS_IN_YEAR;
pub fn certify(p: &impl Policy, m: &clap::ArgMatches, _force: bool)
-> Result<()>
{
let certifier = m.value_of("certifier").unwrap();
let cert = m.value_of("certificate").unwrap();
let userid = m.value_of("userid").unwrap();
let certifier = Cert::from_file(certifier)?;
let cert = Cert::from_file(cert)?;
let vc = cert.with_policy(p, None)?;
let trust_depth: u8 = m.value_of("depth")
.map(|s| s.parse()).unwrap_or(Ok(0))?;
let trust_amount: u8 = m.value_of("amount")
.map(|s| s.parse()).unwrap_or(Ok(120))?;
let regex = m.values_of("regex").map(|v| v.collect::<Vec<_>>())
.unwrap_or(vec![]);
if trust_depth == 0 && regex.len() > 0 {
return Err(
anyhow::format_err!("A regex only makes sense \
if the trust depth is greater than 0"));
}
let local = m.is_present("local");
let non_revocable = m.is_present("non-revocable");
let expires = m.value_of("expires");
let expires_in = m.value_of("expires-in");
// Find the matching User ID.
let mut u = None;
for ua in vc.userids() {
if let Ok(a_userid) = std::str::from_utf8(ua.userid().value()) {
if a_userid == userid {
u = Some(ua.userid());
break;
}
}
}
let userid = if let Some(userid) = u {
userid
} else {
eprintln!("User ID: '{}' not found.\nValid User IDs:", userid);
let mut have_valid = false;
for ua in vc.userids() {
if let Ok(u) = std::str::from_utf8(ua.userid().value()) {
have_valid = true;
eprintln!(" - {}", u);
}
}
if ! have_valid {
eprintln!(" - Certificate has no valid User IDs.");
}
return Err(anyhow::format_err!("No matching User ID found"));
};
// Create the certification.
let mut builder
= SignatureBuilder::new(SignatureType::GenericCertification);
if trust_depth != 0 || trust_amount != 120 {
builder = builder.set_trust_signature(trust_depth, trust_amount)?;
}
for regex in regex {
builder = builder.add_regular_expression(regex)?;
}
if local {
builder = builder.set_exportable_certification(false)?;
}
if non_revocable {
builder = builder.set_revocable(false)?;
}
match (expires, expires_in) {
(None, None) =>
// Default expiration.
builder = builder.set_signature_validity_period(
Duration::new(5 * SECONDS_IN_YEAR, 0))?,
(Some(t), None) if t == "never" =>
// The default is no expiration; there is nothing to do.
(),
(Some(t), None) => {
let now = builder.signature_creation_time()
.unwrap_or_else(std::time::SystemTime::now);
let expiration = SystemTime::from(
crate::parse_iso8601(t, chrono::NaiveTime::from_hms(0, 0, 0))?);
let validity = expiration.duration_since(now)?;
builder = builder.set_signature_creation_time(now)?
.set_signature_validity_period(validity)?;
},
(None, Some(d)) if d == "never" =>
// The default is no expiration; there is nothing to do.
(),
(None, Some(d)) => {
let d = parse_duration(d)?;
builder = builder.set_signature_validity_period(d)?;
},
(Some(_), Some(_)) => unreachable!("conflicting args"),
}
// Sign it.
let mut signer = certifier.primary_key().key().clone()
.parts_into_secret()?.into_keypair()?;
let certification = builder
.sign_userid_binding(
&mut signer,
cert.primary_key().component(),
userid)?;
let cert = cert.insert_packets(certification.clone())?;
assert!(cert.clone().into_packets().any(|p| {
match p {
Packet::Signature(sig) => sig == certification,
_ => false,
}
}));
// And export it.
cert.armored().serialize(&mut std::io::stdout())?;
Ok(())
}
|
