openpgp: Introduce trait Policy. WIPfix-274

  - Add a new trait `sequoia_openpgp::Policy`.  Currently, this trait
    only has one method that returns the current time.  This time is
    used when evaluating signatures.

  - Use this trait in TPK::{revocation_status,alive,expired}.  Remove
    the corresponding *_at() functions.

  - Fixes #274.

1 files changed, 2 insertions, 2 deletions

diff --git a/sqv/src/sqv.rs b/sqv/src/sqv.rs
index 873ca9e8..e09dc7c9 100644
--- a/sqv/src/sqv.rs
+++ b/sqv/src/sqv.rs
@@ -14,7 +14,7 @@ use std::process::exit;
 use std::fs::File;
 use std::collections::{HashMap, HashSet};
 
-use openpgp::{TPK, Packet, packet::Signature, KeyID, RevocationStatus};
+use openpgp::{TPK, Packet, packet::Signature, KeyID, RevocationStatus, Policy};
 use openpgp::constants::HashAlgorithm;
 use openpgp::crypto::Hash;
 use openpgp::parse::{Parse, PacketParserResult, PacketParser};
@@ -273,7 +273,7 @@ fn real_main() -> Result<(), failure::Error> {
                                     }
                                 }
 
-                                if tpk.revocation_status_at(t)
+                                if tpk.revocation_status(&t as &Policy)
                                     != RevocationStatus::NotAsFarAsWeKnow
                                 {
                                     eprintln!(