From e63590fd4bb9958896c2f3ff824bef647e5a5550 Mon Sep 17 00:00:00 2001
From: Thomas Mantl <thomas.mantl@redgears.net>
Date: Thu, 1 Jul 2021 20:19:25 +0200
Subject: [PATCH] simple key-caps parser #1917

RELEASE_NOTES=[FEATURE] Add GPG key capabilities and check in key.isUsable

Signed-off-by: Thomas Mantl <thomas.mantl@redgears.net>
---
 .../backend/crypto/gpg/colons/parse_colons.go | 22 ++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/internal/backend/crypto/gpg/colons/parse_colons.go b/internal/backend/crypto/gpg/colons/parse_colons.go
index 8d16e4a293..18b2baa082 100644
--- a/internal/backend/crypto/gpg/colons/parse_colons.go
+++ b/internal/backend/crypto/gpg/colons/parse_colons.go
@@ -89,6 +89,7 @@ func Parse(reader io.Reader) gpg.KeyList {
 				Ownertrust:     fields[8],
 				Identities:     make(map[string]gpg.Identity, 1),
 				SubKeys:        make(map[string]struct{}, 1),
+				Caps:           parseKeyCaps(fields[11]),
 			}
 		case "sub":
 			fallthrough
@@ -111,8 +112,27 @@ func Parse(reader io.Reader) gpg.KeyList {
 	return kl
 }
 
-func parseKeyCaps(fields []string) gpg.Capabilities {
+func parseKeyCaps(field string) gpg.Capabilities {
+	keycaps := gpg.Capabilities{}
+	caps := strings.ToLower(field)
 
+	if strings.Contains(caps, "S") {
+		keycaps.Sign = true
+	}
+	if strings.Contains(caps, "E") {
+		keycaps.Encrypt = true
+	}
+	if strings.Contains(caps, "C") {
+		keycaps.Certify = true
+	}
+	if strings.Contains(caps, "A") {
+		keycaps.Authentication = true
+	}
+	if strings.Contains(caps, "D") {
+		keycaps.Deactivated = true
+	}
+
+	return keycaps
 }
 
 func parseColonIdentity(fields []string) gpg.Identity {