g10: Add a convenience function for checking if a key is a primary key

* g10/keydb.h (pk_is_primary): New function.
* g10/tofu.c (get_trust): Use it.
(tofu_register_signature): Likewise.
(tofu_register_encryption): Likewise.
(tofu_set_policy): Likewise.
(tofu_get_policy): Likewise.

Signed-off-by: Neal H. Walfield <neal@g10code.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/g10/keydb.h b/g10/keydb.h
index 815b17ee8..e4fbe274f 100644
--- a/g10/keydb.h
+++ b/g10/keydb.h
@@ -433,6 +433,13 @@ keyid_cmp (const u32 *a, const u32 *b)
   return 0;
 }
 
+/* Return whether PK is a primary key.  */
+static int GPGRT_ATTR_UNUSED
+pk_is_primary (PKT_public_key *pk)
+{
+  return keyid_cmp (pk_keyid (pk), pk_main_keyid (pk)) == 0;
+}
+
 /* Copy the keyid in SRC to DEST and return DEST.  */
 u32 *keyid_copy (u32 *dest, const u32 *src);