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agent: Allow recursive use of pinentry.

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* agent/agent.h (struct server_control_s): Add pinentry_level.
* agent/call-pinentry.c (agent_popup_message_stop): Not clear
ENTRY_CTX here.
(unlock_pinentry): Handle recursion.  Clear ENTRY_CTX here.
(start_pinentry): Allow recursive use.

--

GnuPG-bug-id: 3190
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2017-10-26 14:40:38 +09:00
parent bf26c08b95
commit 3b66a256e3
2 changed files with 26 additions and 11 deletions
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3
agent/agent.h
View File

@ -255,6 +255,9 @@ struct server_control_s
/* The current S2K which might be different from the calibrated
count. */
unsigned long s2k_count;
/* Recursion level of pinentry. */
int pinentry_level;
};

20
agent/call-pinentry.c
View File

@ -177,6 +177,9 @@ unlock_pinentry (gpg_error_t rc)
}
}
if (--entry_owner->pinentry_level == 0)
{
entry_owner = NULL;
entry_ctx = NULL;
err = npth_mutex_unlock (&entry_lock);
if (err)
@ -186,6 +189,7 @@ unlock_pinentry (gpg_error_t rc)
rc = gpg_error_from_errno (err);
}
assuan_release (ctx);
}
return rc;
}
@ -288,6 +292,13 @@ start_pinentry (ctrl_t ctrl)
char *flavor_version;
int err;
if (entry_owner == ctrl)
{
/* Allow recursive use of pinentry. */
ctrl->pinentry_level++;
return 0;
}
npth_clock_gettime (&abstime);
abstime.tv_sec += LOCK_TIMEOUT;
err = npth_mutex_timedlock (&entry_lock, &abstime);
@ -371,6 +382,10 @@ start_pinentry (ctrl_t ctrl)
log_error ("can't allocate assuan context: %s\n", gpg_strerror (rc));
return rc;
}
ctrl->pinentry_level = 1;
entry_ctx = ctx;
/* We don't want to log the pinentry communication to make the logs
easier to read. We might want to add a new debug option to enable
pinentry logging. */
@ -382,17 +397,15 @@ start_pinentry (ctrl_t ctrl)
that atfork is used to change the environment for pinentry. We
start the server in detached mode to suppress the console window
under Windows. */
rc = assuan_pipe_connect (ctx, full_pgmname, argv,
rc = assuan_pipe_connect (entry_ctx, full_pgmname, argv,
no_close_list, atfork_cb, ctrl,
ASSUAN_PIPE_CONNECT_DETACHED);
if (rc)
{
log_error ("can't connect to the PIN entry module '%s': %s\n",
full_pgmname, gpg_strerror (rc));
assuan_release (ctx);
return unlock_pinentry (gpg_error (GPG_ERR_NO_PIN_ENTRY));
}
entry_ctx = ctx;
if (DBG_IPC)
log_debug ("connection to PIN entry established\n");
@ -1552,7 +1565,6 @@ agent_popup_message_stop (ctrl_t ctrl)
/* Thread IDs are opaque, but we try our best here by resetting it
to the same content that a static global variable has. */
memset (&popup_tid, '\0', sizeof (popup_tid));
entry_owner = NULL;
/* Now we can close the connection. */
unlock_pinentry (0);