gpg: Extend the "sig" record in --list-mode.

* g10/getkey.c (get_user_id_string): Add arg R_NOUID.  Change call
callers.
(get_user_id): Add arg R_NOUID.  Change call callers.
* g10/mainproc.c (issuer_fpr_string): Make global.
* g10/keylist.c (list_keyblock_colon): Print a '?' for a missing key
also in --list-mode.  Print the "issuer fpr" field also if there is an
issuer fingerprint subpacket.
--

Scripts used to rely on the "User ID not found" string even in the
--with-colons listing.  However, that is not a good idea because that
string is subject to translations etc.  Now we have an explicit way of
telling that a key is missing.  For example:

  gpg --list-sigs --with-colons | \
    awk -F: '$1=="sig" && $2=="?" {if($13){print $13}else{print $5}}'

Prints all keyids or fingerprint of signing keys for which we do not
have the key in our local keyring.

Signed-off-by: Werner Koch <wk@gnupg.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/g10/packet.h b/g10/packet.h
index 8dca88b75..43c097e72 100644
--- a/g10/packet.h
+++ b/g10/packet.h
@@ -604,6 +604,8 @@ int proc_signature_packets_by_fd (ctrl_t ctrl,
 int proc_encryption_packets (ctrl_t ctrl, void *ctx, iobuf_t a);
 int list_packets( iobuf_t a );
 
+char *issuer_fpr_string (PKT_signature *sig);
+
 /*-- parse-packet.c --*/
 
 /* Sets the packet list mode to MODE (i.e., whether we are dumping a