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card: Allow "yubikey disable" only for Yubikey-5 and later.

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* tools/card-yubikey.c (yubikey_commands): Add new arg INFO and test
for Yubikey-5.
* tools/gpg-card.c (cmd_yubikey): Pass info to yubikey_commands.
--

The configuration can be read from a Yubikey-4 but not be written.
The mode command is also not useful because it allows only the
selection of transports.  It does not allow to disable single
applications based on one transport (like OPGP and PIV).  Thsi patch
shows an appropriate error message.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2019-03-28 10:56:28 +01:00
parent 5a3055eb72
commit 2f761251c5
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
3 changed files with 12 additions and 3 deletions
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10
tools/card-yubikey.c
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@ -310,7 +310,7 @@ yk_enable_disable (struct ykapps_s *yk, struct iface_s *iface,
* stream to output information. This function must only be called on
* Yubikeys. */
gpg_error_t
yubikey_commands (estream_t fp, int argc, char *argv[])
yubikey_commands (card_info_t info, estream_t fp, int argc, char *argv[])
{
gpg_error_t err;
enum {ykLIST, ykENABLE, ykDISABLE } cmd;
@ -336,6 +336,14 @@ yubikey_commands (estream_t fp, int argc, char *argv[])
goto leave;
}
if (info->cardversion < 0x050000 && cmd != ykLIST)
{
log_info ("Sub-command '%s' is only support by Yubikey-5 and later\n",
argv[0]);
err = gpg_error (GPG_ERR_NOT_SUPPORTED);
goto leave;
}
/* Parse interface if needed. */
if (cmd == ykLIST)
iface.usb = iface.nfc = 1;