scd: Add --advanced option for READKEY.

* scd/command.c (cmd_readkey) : Support ADVANCED arg.
* scd/app.c (app_readcert): Add ADVANCED arg.
* scd/app-openpgp.c (do_readkey): Implement ADVANCED arg.
* scd/app-nks.c (do_readkey): Error return with GPG_ERR_NOT_SUPPORTED.

--
"SCD READKEY --advanced OPENPGP.3" returns key in advanced format.
With this suport, poldi-ctrl will be no longer needed.

Signed-off-by: NIIBE Yutaka <[email protected]>

1 files changed, 3 insertions, 2 deletions

diff --git a/scd/app.c b/scd/app.c
index 55b8edd12..1f21dc149 100644
--- a/scd/app.c
+++ b/scd/app.c
@@ -612,7 +612,8 @@ app_readcert (app_t app, const char *certid,
 
    This function might not be supported by all applications.  */
 gpg_error_t
-app_readkey (app_t app, const char *keyid, unsigned char **pk, size_t *pklen)
+app_readkey (app_t app, int advanced, const char *keyid,
+             unsigned char **pk, size_t *pklen)
 {
   gpg_error_t err;
 
@@ -630,7 +631,7 @@ app_readkey (app_t app, const char *keyid, unsigned char **pk, size_t *pklen)
   err = lock_reader (app->slot, NULL /*FIXME*/);
   if (err)
     return err;
-  err= app->fnc.readkey (app, keyid, pk, pklen);
+  err= app->fnc.readkey (app, advanced, keyid, pk, pklen);
   unlock_reader (app->slot);
   return err;
 }