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scd: New options --info and --info-only for READKEY.

Browse source 
* scd/command.c (cmd_readkey): New options --info and --info-only.
* scd/app.c (app_readkey): New arg 'flags'.
* scd/app-common.h (APP_READKEY_FLAG_INFO): New.
(struct app_ctx_s): New args 'ctrl' and 'flags' for member readkey.
Change all implementers.
* scd/app-nks.c (do_readkey): Stub implementation of
APP_READKEY_FLAG_INFO.
* scd/app-openpgp.c (do_readkey): Implement APP_READKEY_FLAG_INFO.
* scd/app-piv.c (do_readkey): Ditto.
--

This feature allows to quickly get the keygrip and in most cases also
the usage flags for one specific keyref.  Example:

 <- readkey --info-only  PIV.9D
 -> S KEYPAIRINFO FC6061FB457224370B85C6F34DD56CD29E669620 PIV.9D e
 -> OK

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2019-04-03 17:31:09 +02:00
parent ec6a677923
commit 679b8f1c04
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
7 changed files with 147 additions and 50 deletions
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14
scd/app-common.h
View file

@ -36,10 +36,14 @@
/* Flags used with app_writekey. */
#define APP_WRITEKEY_FLAG_FORCE 1 /* Force overwriting existing key. */
/* Flags used with app_readkey. */
#define APP_READKEY_FLAG_INFO 1 /* Send also a KEYPAIRINFO line. */
/* Bit flags set by the decipher function into R_INFO. */
#define APP_DECIPHER_INFO_NOPAD 1 /* Padding has been removed. */
struct app_local_s; /* Defined by all app-*.c. */
struct app_ctx_s {
@ -75,8 +79,9 @@ struct app_ctx_s {
gpg_error_t (*learn_status) (app_t app, ctrl_t ctrl, unsigned int flags);
gpg_error_t (*readcert) (app_t app, const char *certid,
unsigned char **cert, size_t *certlen);
gpg_error_t (*readkey) (app_t app, const char *certid,
unsigned char **pk, size_t *pklen);
gpg_error_t (*readkey) (app_t app, ctrl_t ctrl,
const char *certid, unsigned int flags,
unsigned char **pk, size_t *pklen);
gpg_error_t (*getattr) (app_t app, ctrl_t ctrl, const char *name);
gpg_error_t (*setattr) (app_t app, const char *name,
gpg_error_t (*pincb)(void*, const char *, char **),
@ -126,6 +131,8 @@ struct app_ctx_s {
/*-- app-help.c --*/
unsigned int app_help_count_bits (const unsigned char *a, size_t len);
gpg_error_t app_help_get_keygrip_string_pk (const void *pk, size_t pklen,
char *hexkeygrip);
gpg_error_t app_help_get_keygrip_string (ksba_cert_t cert, char *hexkeygrip);
gpg_error_t app_help_pubkey_from_cert (const void *cert, size_t certlen,
unsigned char **r_pk, size_t *r_pklen);
@ -152,7 +159,8 @@ gpg_error_t app_write_learn_status (app_t app, ctrl_t ctrl,
gpg_error_t app_readcert (app_t app, ctrl_t ctrl, const char *certid,
unsigned char **cert, size_t *certlen);
gpg_error_t app_readkey (app_t app, ctrl_t ctrl,
const char *keyid, unsigned char **pk, size_t *pklen);
const char *keyid, unsigned int flags,
unsigned char **pk, size_t *pklen);
gpg_error_t app_getattr (app_t app, ctrl_t ctrl, const char *name);
gpg_error_t app_setattr (app_t app, ctrl_t ctrl, const char *name,
gpg_error_t (*pincb)(void*, const char *, char **),