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use std::time::{SystemTime, Duration};
use anyhow::Context;
use sequoia_openpgp as openpgp;
use openpgp::Result;
use openpgp::cert::prelude::*;
use openpgp::packet::prelude::*;
use openpgp::packet::signature::subpacket::NotationDataFlags;
use openpgp::parse::Parse;
use openpgp::serialize::Serialize;
use openpgp::types::SignatureType;
use crate::Config;
use crate::parse_duration;
use crate::parse_notations;
use crate::SECONDS_IN_YEAR;
use crate::commands::get_certification_keys;
use crate::commands::GetKeysOptions;
use crate::sq_cli::certify;
pub fn certify(config: Config, c: certify::Command)
-> Result<()>
{
let certifier = c.certifier;
let cert = c.certificate;
let userid = c.userid;
let certifier = Cert::from_file(certifier)?;
let private_key_store = c.private_key_store;
let cert = Cert::from_file(cert)?;
let trust_depth: u8 = c.depth;
let trust_amount: u8 = c.amount;
let regex = c.regex;
if trust_depth == 0 && !regex.is_empty() {
return Err(
anyhow::format_err!("A regex only makes sense \
if the trust depth is greater than 0"));
}
let local = c.local;
let non_revocable = c.non_revocable;
let time = if let Some(t) = c.time {
let time = SystemTime::from(
crate::parse_iso8601(&t, chrono::NaiveTime::from_hms(0, 0, 0))
.context(format!("Parsing --time {}", t))?);
Some(time)
} else {
None
};
let expires = c.expires;
let expires_in = c.expires_in;
let vc = cert.with_policy(&config.policy, time)?;
// 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)?;
}
// Creation time.
if let Some(time) = time {
builder = builder.set_signature_creation_time(time)?;
}
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"),
}
let notations = parse_notations(c.notation.unwrap_or_default())?;
for (critical, n) in notations {
builder = builder.add_notation(
n.name(),
n.value(),
NotationDataFlags::empty().set_human_readable(),
critical)?;
};
let mut options = Vec::new();
if c.allow_not_alive_certifier {
options.push(GetKeysOptions::AllowNotAlive);
}
if c.allow_revoked_certifier {
options.push(GetKeysOptions::AllowRevoked);
}
// Sign it.
let signers = get_certification_keys(
&[certifier], &config.policy,
private_key_store.as_deref(),
time,
Some(&options))?;
assert_eq!(signers.len(), 1);
let mut signer = signers.into_iter().next().unwrap();
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.
let mut message = config.create_or_stdout_pgp(
c.output.as_deref(),
c.binary,
sequoia_openpgp::armor::Kind::PublicKey,
)?;
cert.serialize(&mut message)?;
message.finalize()?;
Ok(())
}
|
