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agent: Clear bogus pinentry cache, when it causes an error.

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* agent/agent.h (PINENTRY_STATUS_*): Expose to public.
(struct pin_entry_info_s): Add status.
* agent/call-pinentry.c (agent_askpin): Clearing the ->status
before the loop, let the assuan_transact set ->status.  When
failure with PINENTRY_STATUS_PASSWORD_FROM_CACHE, it returns
soon.
* agent/findkey.c (unprotect): Clear the pinentry cache,
when it causes an error.

--

Cherry-picked from master commit of:
	      02a2633a7f

Debian-bug-id: 919856
GnuPG-bug-id: 4348
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2019-01-28 12:58:13 +09:00
parent 7f4c3eb0a0
commit 9109bb9919
3 changed files with 39 additions and 21 deletions
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11
agent/agent.h
View file

@ -265,6 +265,14 @@ struct server_control_s
};
/* Status of pinentry. */
enum
{
PINENTRY_STATUS_CLOSE_BUTTON = 1 << 0,
PINENTRY_STATUS_PIN_REPEATED = 1 << 8,
PINENTRY_STATUS_PASSWORD_FROM_CACHE = 1 << 9
};
/* Information pertaining to pinentry requests. */
struct pin_entry_info_s
{
@ -274,7 +282,8 @@ struct pin_entry_info_s
int failed_tries; /* Number of tries so far failed. */
int with_qualitybar; /* Set if the quality bar should be displayed. */
int with_repeat; /* Request repetition of the passphrase. */
int repeat_okay; /* Repetition worked. */
int repeat_okay; /* Repetition worked. */
unsigned int status; /* Status. */
gpg_error_t (*check_cb)(struct pin_entry_info_s *); /* CB used to check
the PIN */
void *check_cb_arg; /* optional argument which might be of use in the CB */