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ef0741ac54
* agent/call-pinentry.c (start_pinentry): Remove first instance of sending the option. -- That option to tell Pinentry about an external password cache was send twice and the first one unconditionally. Signed-off-by: Werner Koch <wk@gnupg.org>
1306 lines
38 KiB
C
1306 lines
38 KiB
C
/* call-pinentry.c - Spawn the pinentry to query stuff from the user
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* Copyright (C) 2001, 2002, 2004, 2007, 2008,
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* 2010 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <assert.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#ifndef HAVE_W32_SYSTEM
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# include <sys/wait.h>
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# include <sys/types.h>
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# include <signal.h>
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#endif
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#include <pth.h>
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#include "agent.h"
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#include <assuan.h>
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#include "setenv.h"
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#include "i18n.h"
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#ifdef _POSIX_OPEN_MAX
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#define MAX_OPEN_FDS _POSIX_OPEN_MAX
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#else
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#define MAX_OPEN_FDS 20
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#endif
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/* Because access to the pinentry must be serialized (it is and shall
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be a global mutual dialog) we should better timeout further
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requests after some time. 2 minutes seem to be a reasonable
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time. */
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#define LOCK_TIMEOUT (1*60)
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/* The assuan context of the current pinentry. */
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static assuan_context_t entry_ctx;
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/* The control variable of the connection owning the current pinentry.
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This is only valid if ENTRY_CTX is not NULL. Note, that we care
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only about the value of the pointer and that it should never be
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dereferenced. */
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static ctrl_t entry_owner;
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/* A mutex used to serialize access to the pinentry. */
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static pth_mutex_t entry_lock;
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/* The thread ID of the popup working thread. */
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static pth_t popup_tid;
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/* A flag used in communication between the popup working thread and
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its stop function. */
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static int popup_finished;
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/* Data to be passed to our callbacks, */
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struct entry_parm_s
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{
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int lines;
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size_t size;
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unsigned char *buffer;
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};
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/* This function must be called once to initialize this module. This
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has to be done before a second thread is spawned. We can't do the
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static initialization because Pth emulation code might not be able
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to do a static init; in particular, it is not possible for W32. */
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void
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initialize_module_call_pinentry (void)
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{
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static int initialized;
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if (!initialized)
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{
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if (pth_mutex_init (&entry_lock))
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initialized = 1;
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}
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}
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static void
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dump_mutex_state (pth_mutex_t *m)
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{
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#ifdef _W32_PTH_H
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(void)m;
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log_printf ("unknown under W32");
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#else
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if (!(m->mx_state & PTH_MUTEX_INITIALIZED))
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log_printf ("not_initialized");
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else if (!(m->mx_state & PTH_MUTEX_LOCKED))
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log_printf ("not_locked");
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else
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log_printf ("locked tid=0x%lx count=%lu", (long)m->mx_owner, m->mx_count);
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#endif
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}
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/* This function may be called to print infromation pertaining to the
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current state of this module to the log. */
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void
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agent_query_dump_state (void)
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{
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log_info ("agent_query_dump_state: entry_lock=");
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dump_mutex_state (&entry_lock);
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log_printf ("\n");
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log_info ("agent_query_dump_state: entry_ctx=%p pid=%ld popup_tid=%p\n",
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entry_ctx, (long)assuan_get_pid (entry_ctx), popup_tid);
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}
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/* Called to make sure that a popup window owned by the current
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connection gets closed. */
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void
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agent_reset_query (ctrl_t ctrl)
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{
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if (entry_ctx && popup_tid && entry_owner == ctrl)
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{
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agent_popup_message_stop (ctrl);
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}
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}
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/* Unlock the pinentry so that another thread can start one and
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disconnect that pinentry - we do this after the unlock so that a
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stalled pinentry does not block other threads. Fixme: We should
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have a timeout in Assuan for the disconnect operation. */
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static int
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unlock_pinentry (int rc)
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{
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assuan_context_t ctx = entry_ctx;
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entry_ctx = NULL;
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if (!pth_mutex_release (&entry_lock))
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{
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log_error ("failed to release the entry lock\n");
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if (!rc)
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rc = gpg_error (GPG_ERR_INTERNAL);
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}
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assuan_release (ctx);
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return rc;
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}
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/* To make sure we leave no secrets in our image after forking of the
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pinentry, we use this callback. */
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static void
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atfork_cb (void *opaque, int where)
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{
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ctrl_t ctrl = opaque;
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#ifndef HAVE_W32_SYSTEM
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struct sigaction sa;
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/* Pop up message should be able to be killed by SIGINT. */
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sigemptyset (&sa.sa_mask);
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sa.sa_handler = SIG_DFL;
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sa.sa_flags = 0;
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sigaction (SIGINT, &sa, NULL);
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sigprocmask (SIG_SETMASK, &sa.sa_mask, NULL); /* Unblock all signals. */
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#endif
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if (!where)
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{
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int iterator = 0;
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const char *name, *assname, *value;
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gcry_control (GCRYCTL_TERM_SECMEM);
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while ((name = session_env_list_stdenvnames (&iterator, &assname)))
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{
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/* For all new envvars (!ASSNAME) and the two medium old
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ones which do have an assuan name but are conveyed using
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environment variables, update the environment of the
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forked process. */
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if (!assname
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|| !strcmp (name, "XAUTHORITY")
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|| !strcmp (name, "PINENTRY_USER_DATA"))
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{
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value = session_env_getenv (ctrl->session_env, name);
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if (value)
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setenv (name, value, 1);
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}
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}
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}
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}
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static gpg_error_t
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getinfo_pid_cb (void *opaque, const void *buffer, size_t length)
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{
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unsigned long *pid = opaque;
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char pidbuf[50];
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/* There is only the pid in the server's response. */
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if (length >= sizeof pidbuf)
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length = sizeof pidbuf -1;
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if (length)
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{
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strncpy (pidbuf, buffer, length);
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pidbuf[length] = 0;
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*pid = strtoul (pidbuf, NULL, 10);
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}
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return 0;
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}
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/* Fork off the pin entry if this has not already been done. Note,
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that this function must always be used to aquire the lock for the
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pinentry - we will serialize _all_ pinentry calls.
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*/
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static int
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start_pinentry (ctrl_t ctrl)
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{
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int rc;
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const char *pgmname;
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assuan_context_t ctx;
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const char *argv[5];
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int no_close_list[3];
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int i;
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pth_event_t evt;
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const char *tmpstr;
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unsigned long pinentry_pid;
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const char *value;
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evt = pth_event (PTH_EVENT_TIME, pth_timeout (LOCK_TIMEOUT, 0));
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if (!pth_mutex_acquire (&entry_lock, 0, evt))
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{
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if (pth_event_occurred (evt))
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rc = gpg_error (GPG_ERR_TIMEOUT);
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else
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rc = gpg_error (GPG_ERR_INTERNAL);
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pth_event_free (evt, PTH_FREE_THIS);
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log_error (_("failed to acquire the pinentry lock: %s\n"),
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gpg_strerror (rc));
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return rc;
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}
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pth_event_free (evt, PTH_FREE_THIS);
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entry_owner = ctrl;
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if (entry_ctx)
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return 0;
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if (opt.verbose)
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log_info ("starting a new PIN Entry\n");
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#ifdef HAVE_W32_SYSTEM
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fflush (stdout);
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fflush (stderr);
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#endif
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if (fflush (NULL))
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{
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#ifndef HAVE_W32_SYSTEM
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gpg_error_t tmperr = gpg_error (gpg_err_code_from_errno (errno));
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#endif
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log_error ("error flushing pending output: %s\n", strerror (errno));
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/* At least Windows XP fails here with EBADF. According to docs
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and Wine an fflush(NULL) is the same as _flushall. However
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the Wime implementaion does not flush stdin,stdout and stderr
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- see above. Lets try to ignore the error. */
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#ifndef HAVE_W32_SYSTEM
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return unlock_pinentry (tmperr);
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#endif
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}
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if (!opt.pinentry_program || !*opt.pinentry_program)
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opt.pinentry_program = gnupg_module_name (GNUPG_MODULE_NAME_PINENTRY);
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pgmname = opt.pinentry_program;
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if ( !(pgmname = strrchr (opt.pinentry_program, '/')))
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pgmname = opt.pinentry_program;
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else
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pgmname++;
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/* OS X needs the entire file name in argv[0], so that it can locate
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the resource bundle. For other systems we stick to the usual
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convention of supplying only the name of the program. */
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#ifdef __APPLE__
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argv[0] = opt.pinentry_program;
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#else /*!__APPLE__*/
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argv[0] = pgmname;
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#endif /*__APPLE__*/
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if (!opt.keep_display
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&& (value = session_env_getenv (ctrl->session_env, "DISPLAY")))
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{
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argv[1] = "--display";
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argv[2] = value;
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argv[3] = NULL;
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}
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else
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argv[1] = NULL;
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i=0;
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if (!opt.running_detached)
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{
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if (log_get_fd () != -1)
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no_close_list[i++] = assuan_fd_from_posix_fd (log_get_fd ());
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no_close_list[i++] = assuan_fd_from_posix_fd (fileno (stderr));
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}
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no_close_list[i] = -1;
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rc = assuan_new (&ctx);
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if (rc)
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{
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log_error ("can't allocate assuan context: %s\n", gpg_strerror (rc));
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return rc;
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}
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/* Connect to the pinentry and perform initial handshaking. Note
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that atfork is used to change the environment for pinentry. We
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start the server in detached mode to suppress the console window
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under Windows. */
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rc = assuan_pipe_connect (ctx, opt.pinentry_program, argv,
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no_close_list, atfork_cb, ctrl,
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ASSUAN_PIPE_CONNECT_DETACHED);
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if (rc)
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{
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log_error ("can't connect to the PIN entry module: %s\n",
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gpg_strerror (rc));
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assuan_release (ctx);
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return unlock_pinentry (gpg_error (GPG_ERR_NO_PIN_ENTRY));
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}
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entry_ctx = ctx;
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if (DBG_ASSUAN)
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log_debug ("connection to PIN entry established\n");
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rc = assuan_transact (entry_ctx,
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opt.no_grab? "OPTION no-grab":"OPTION grab",
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NULL, NULL, NULL, NULL, NULL, NULL);
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if (rc)
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return unlock_pinentry (rc);
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value = session_env_getenv (ctrl->session_env, "GPG_TTY");
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if (value)
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{
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char *optstr;
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if (asprintf (&optstr, "OPTION ttyname=%s", value) < 0 )
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return unlock_pinentry (out_of_core ());
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rc = assuan_transact (entry_ctx, optstr, NULL, NULL, NULL, NULL, NULL,
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NULL);
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xfree (optstr);
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if (rc)
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return unlock_pinentry (rc);
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}
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value = session_env_getenv (ctrl->session_env, "TERM");
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if (value)
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{
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char *optstr;
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if (asprintf (&optstr, "OPTION ttytype=%s", value) < 0 )
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return unlock_pinentry (out_of_core ());
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rc = assuan_transact (entry_ctx, optstr, NULL, NULL, NULL, NULL, NULL,
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NULL);
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xfree (optstr);
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if (rc)
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return unlock_pinentry (rc);
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}
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if (ctrl->lc_ctype)
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{
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char *optstr;
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if (asprintf (&optstr, "OPTION lc-ctype=%s", ctrl->lc_ctype) < 0 )
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return unlock_pinentry (out_of_core ());
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rc = assuan_transact (entry_ctx, optstr, NULL, NULL, NULL, NULL, NULL,
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NULL);
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xfree (optstr);
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if (rc)
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return unlock_pinentry (rc);
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}
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if (ctrl->lc_messages)
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{
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char *optstr;
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if (asprintf (&optstr, "OPTION lc-messages=%s", ctrl->lc_messages) < 0 )
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return unlock_pinentry (out_of_core ());
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rc = assuan_transact (entry_ctx, optstr, NULL, NULL, NULL, NULL, NULL,
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NULL);
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xfree (optstr);
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if (rc)
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return unlock_pinentry (rc);
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}
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if (opt.allow_external_cache)
|
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{
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/* Indicate to the pinentry that it may read from an external cache.
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It is essential that the pinentry respect this. If the
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cached password is not up to date and retry == 1, then, using
|
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a version of GPG Agent that doesn't support this, won't issue
|
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another pin request and the user won't get a chance to
|
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correct the password. */
|
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rc = assuan_transact (entry_ctx, "OPTION allow-external-password-cache",
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NULL, NULL, NULL, NULL, NULL, NULL);
|
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if (rc && gpg_err_code (rc) != GPG_ERR_UNKNOWN_OPTION)
|
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return unlock_pinentry (rc);
|
||
}
|
||
|
||
|
||
{
|
||
/* Provide a few default strings for use by the pinentries. This
|
||
may help a pinentry to avoid implementing localization code. */
|
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static struct { const char *key, *value; int mode; } tbl[] = {
|
||
/* TRANSLATORS: These are labels for buttons etc used in
|
||
Pinentries. An underscore indicates that the next letter
|
||
should be used as an accelerator. Double the underscore for
|
||
a literal one. The actual to be translated text starts after
|
||
the second vertical bar. */
|
||
{ "ok", N_("|pinentry-label|_OK") },
|
||
{ "cancel", N_("|pinentry-label|_Cancel") },
|
||
{ "yes", N_("|pinentry-label|_Yes") },
|
||
{ "no", N_("|pinentry-label|_No") },
|
||
{ "prompt", N_("|pinentry-label|PIN:") },
|
||
{ "pwmngr", N_("|pinentry-label|_Save in password manager") },
|
||
{ "cf-visi",N_("Do you really want to make your "
|
||
"passphrase visible on the screen?") },
|
||
{ "tt-visi",N_("|pinentry-tt|Make passphrase visible") },
|
||
{ "tt-hide",N_("|pinentry-tt|Hide passphrase") },
|
||
{ NULL, NULL}
|
||
};
|
||
char *optstr;
|
||
int idx;
|
||
const char *s, *s2;
|
||
|
||
for (idx=0; tbl[idx].key; idx++)
|
||
{
|
||
s = _(tbl[idx].value);
|
||
if (*s == '|' && (s2=strchr (s+1,'|')))
|
||
s = s2+1;
|
||
if (asprintf (&optstr, "OPTION default-%s=%s", tbl[idx].key, s) < 0 )
|
||
return unlock_pinentry (out_of_core ());
|
||
assuan_transact (entry_ctx, optstr, NULL, NULL, NULL, NULL, NULL,
|
||
NULL);
|
||
xfree (optstr);
|
||
}
|
||
}
|
||
|
||
|
||
/* Tell the pinentry the name of a file it shall touch after having
|
||
messed with the tty. This is optional and only supported by
|
||
newer pinentries and thus we do no error checking. */
|
||
tmpstr = opt.pinentry_touch_file;
|
||
if (tmpstr && !strcmp (tmpstr, "/dev/null"))
|
||
tmpstr = NULL;
|
||
else if (!tmpstr)
|
||
tmpstr = get_agent_socket_name ();
|
||
if (tmpstr)
|
||
{
|
||
char *optstr;
|
||
|
||
if (asprintf (&optstr, "OPTION touch-file=%s", tmpstr ) < 0 )
|
||
;
|
||
else
|
||
{
|
||
assuan_transact (entry_ctx, optstr, NULL, NULL, NULL, NULL, NULL,
|
||
NULL);
|
||
xfree (optstr);
|
||
}
|
||
}
|
||
|
||
|
||
/* Now ask the Pinentry for its PID. If the Pinentry is new enough
|
||
it will send the pid back and we will use an inquire to notify
|
||
our client. The client may answer the inquiry either with END or
|
||
with CAN to cancel the pinentry. */
|
||
rc = assuan_transact (entry_ctx, "GETINFO pid",
|
||
getinfo_pid_cb, &pinentry_pid,
|
||
NULL, NULL, NULL, NULL);
|
||
if (rc)
|
||
{
|
||
log_info ("You may want to update to a newer pinentry\n");
|
||
rc = 0;
|
||
}
|
||
else if (!rc && (pid_t)pinentry_pid == (pid_t)(-1))
|
||
log_error ("pinentry did not return a PID\n");
|
||
else
|
||
{
|
||
rc = agent_inq_pinentry_launched (ctrl, pinentry_pid);
|
||
if (gpg_err_code (rc) == GPG_ERR_CANCELED)
|
||
return unlock_pinentry (gpg_error (GPG_ERR_CANCELED));
|
||
rc = 0;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Returns True is the pinentry is currently active. If WAITSECONDS is
|
||
greater than zero the function will wait for this many seconds
|
||
before returning. */
|
||
int
|
||
pinentry_active_p (ctrl_t ctrl, int waitseconds)
|
||
{
|
||
(void)ctrl;
|
||
|
||
if (waitseconds > 0)
|
||
{
|
||
pth_event_t evt;
|
||
int rc;
|
||
|
||
evt = pth_event (PTH_EVENT_TIME, pth_timeout (waitseconds, 0));
|
||
if (!pth_mutex_acquire (&entry_lock, 0, evt))
|
||
{
|
||
if (pth_event_occurred (evt))
|
||
rc = gpg_error (GPG_ERR_TIMEOUT);
|
||
else
|
||
rc = gpg_error (GPG_ERR_INTERNAL);
|
||
pth_event_free (evt, PTH_FREE_THIS);
|
||
return rc;
|
||
}
|
||
pth_event_free (evt, PTH_FREE_THIS);
|
||
}
|
||
else
|
||
{
|
||
if (!pth_mutex_acquire (&entry_lock, 1, NULL))
|
||
return gpg_error (GPG_ERR_LOCKED);
|
||
}
|
||
|
||
if (!pth_mutex_release (&entry_lock))
|
||
log_error ("failed to release the entry lock at %d\n", __LINE__);
|
||
return 0;
|
||
}
|
||
|
||
|
||
static gpg_error_t
|
||
getpin_cb (void *opaque, const void *buffer, size_t length)
|
||
{
|
||
struct entry_parm_s *parm = opaque;
|
||
|
||
if (!buffer)
|
||
return 0;
|
||
|
||
/* we expect the pin to fit on one line */
|
||
if (parm->lines || length >= parm->size)
|
||
return gpg_error (GPG_ERR_ASS_TOO_MUCH_DATA);
|
||
|
||
/* fixme: we should make sure that the assuan buffer is allocated in
|
||
secure memory or read the response byte by byte */
|
||
memcpy (parm->buffer, buffer, length);
|
||
parm->buffer[length] = 0;
|
||
parm->lines++;
|
||
return 0;
|
||
}
|
||
|
||
|
||
static int
|
||
all_digitsp( const char *s)
|
||
{
|
||
for (; *s && *s >= '0' && *s <= '9'; s++)
|
||
;
|
||
return !*s;
|
||
}
|
||
|
||
|
||
/* Return a new malloced string by unescaping the string S. Escaping
|
||
is percent escaping and '+'/space mapping. A binary Nul will
|
||
silently be replaced by a 0xFF. Function returns NULL to indicate
|
||
an out of memory status. PArsing stops at the end of the string or
|
||
a white space character. */
|
||
static char *
|
||
unescape_passphrase_string (const unsigned char *s)
|
||
{
|
||
char *buffer, *d;
|
||
|
||
buffer = d = xtrymalloc_secure (strlen ((const char*)s)+1);
|
||
if (!buffer)
|
||
return NULL;
|
||
while (*s && !spacep (s))
|
||
{
|
||
if (*s == '%' && s[1] && s[2])
|
||
{
|
||
s++;
|
||
*d = xtoi_2 (s);
|
||
if (!*d)
|
||
*d = '\xff';
|
||
d++;
|
||
s += 2;
|
||
}
|
||
else if (*s == '+')
|
||
{
|
||
*d++ = ' ';
|
||
s++;
|
||
}
|
||
else
|
||
*d++ = *s++;
|
||
}
|
||
*d = 0;
|
||
return buffer;
|
||
}
|
||
|
||
|
||
/* Estimate the quality of the passphrase PW and return a value in the
|
||
range 0..100. */
|
||
static int
|
||
estimate_passphrase_quality (const char *pw)
|
||
{
|
||
int goodlength = opt.min_passphrase_len + opt.min_passphrase_len/3;
|
||
int length;
|
||
const char *s;
|
||
|
||
if (goodlength < 1)
|
||
return 0;
|
||
|
||
for (length = 0, s = pw; *s; s++)
|
||
if (!spacep (s))
|
||
length ++;
|
||
|
||
if (length > goodlength)
|
||
return 100;
|
||
return ((length*10) / goodlength)*10;
|
||
}
|
||
|
||
|
||
/* Handle the QUALITY inquiry. */
|
||
static gpg_error_t
|
||
inq_quality (void *opaque, const char *line)
|
||
{
|
||
assuan_context_t ctx = opaque;
|
||
char *pin;
|
||
int rc;
|
||
int percent;
|
||
char numbuf[20];
|
||
|
||
if (!strncmp (line, "QUALITY", 7) && (line[7] == ' ' || !line[7]))
|
||
{
|
||
line += 7;
|
||
while (*line == ' ')
|
||
line++;
|
||
|
||
pin = unescape_passphrase_string (line);
|
||
if (!pin)
|
||
rc = gpg_error_from_syserror ();
|
||
else
|
||
{
|
||
percent = estimate_passphrase_quality (pin);
|
||
if (check_passphrase_constraints (NULL, pin, 1))
|
||
percent = -percent;
|
||
snprintf (numbuf, sizeof numbuf, "%d", percent);
|
||
rc = assuan_send_data (ctx, numbuf, strlen (numbuf));
|
||
xfree (pin);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
log_error ("unsupported inquiry `%s' from pinentry\n", line);
|
||
rc = gpg_error (GPG_ERR_ASS_UNKNOWN_INQUIRE);
|
||
}
|
||
|
||
return rc;
|
||
}
|
||
|
||
|
||
/* Helper for agent_askpin and agent_get_passphrase. */
|
||
static int
|
||
setup_qualitybar (void)
|
||
{
|
||
int rc;
|
||
char line[ASSUAN_LINELENGTH];
|
||
char *tmpstr, *tmpstr2;
|
||
const char *tooltip;
|
||
|
||
/* TRANSLATORS: This string is displayed by Pinentry as the label
|
||
for the quality bar. */
|
||
tmpstr = try_percent_escape (_("Quality:"), "\t\r\n\f\v");
|
||
snprintf (line, DIM(line)-1, "SETQUALITYBAR %s", tmpstr? tmpstr:"");
|
||
line[DIM(line)-1] = 0;
|
||
xfree (tmpstr);
|
||
rc = assuan_transact (entry_ctx, line, NULL, NULL, NULL, NULL, NULL, NULL);
|
||
if (rc == 103 /*(Old assuan error code)*/
|
||
|| gpg_err_code (rc) == GPG_ERR_ASS_UNKNOWN_CMD)
|
||
; /* Ignore Unknown Command from old Pinentry versions. */
|
||
else if (rc)
|
||
return rc;
|
||
|
||
tmpstr2 = gnupg_get_help_string ("pinentry.qualitybar.tooltip", 0);
|
||
if (tmpstr2)
|
||
tooltip = tmpstr2;
|
||
else
|
||
{
|
||
/* TRANSLATORS: This string is a tooltip, shown by pinentry when
|
||
hovering over the quality bar. Please use an appropriate
|
||
string to describe what this is about. The length of the
|
||
tooltip is limited to about 900 characters. If you do not
|
||
translate this entry, a default english text (see source)
|
||
will be used. */
|
||
tooltip = _("pinentry.qualitybar.tooltip");
|
||
if (!strcmp ("pinentry.qualitybar.tooltip", tooltip))
|
||
tooltip = ("The quality of the text entered above.\n"
|
||
"Please ask your administrator for "
|
||
"details about the criteria.");
|
||
}
|
||
tmpstr = try_percent_escape (tooltip, "\t\r\n\f\v");
|
||
xfree (tmpstr2);
|
||
snprintf (line, DIM(line)-1, "SETQUALITYBAR_TT %s", tmpstr? tmpstr:"");
|
||
line[DIM(line)-1] = 0;
|
||
xfree (tmpstr);
|
||
rc = assuan_transact (entry_ctx, line, NULL, NULL, NULL, NULL, NULL, NULL);
|
||
if (rc == 103 /*(Old assuan error code)*/
|
||
|| gpg_err_code (rc) == GPG_ERR_ASS_UNKNOWN_CMD)
|
||
; /* Ignore Unknown Command from old pinentry versions. */
|
||
else if (rc)
|
||
return rc;
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
enum
|
||
{
|
||
PINENTRY_STATUS_PASSWORD_FROM_CACHE = 1 << 9
|
||
};
|
||
|
||
/* Check the button_info line for a close action. Also check for the
|
||
PIN_REPEATED flag. */
|
||
static gpg_error_t
|
||
pinentry_status_cb (void *opaque, const char *line)
|
||
{
|
||
unsigned int *flag = opaque;
|
||
|
||
if (strcmp (line, "PASSWORD_FROM_CACHE") == 0)
|
||
{
|
||
*flag |= PINENTRY_STATUS_PASSWORD_FROM_CACHE;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Call the Entry and ask for the PIN. We do check for a valid PIN
|
||
number here and repeat it as long as we have invalid formed
|
||
numbers. KEYINFO and CACHEMODE are used to tell pinentry something
|
||
about the key. */
|
||
int
|
||
agent_askpin (ctrl_t ctrl,
|
||
const char *desc_text, const char *prompt_text,
|
||
const char *initial_errtext,
|
||
struct pin_entry_info_s *pininfo,
|
||
const char *keyinfo, cache_mode_t cache_mode)
|
||
{
|
||
int rc;
|
||
char line[ASSUAN_LINELENGTH];
|
||
struct entry_parm_s parm;
|
||
const char *errtext = NULL;
|
||
int is_pin = 0;
|
||
int saveflag;
|
||
unsigned int pinentry_status;
|
||
|
||
if (opt.batch)
|
||
return 0; /* fixme: we should return BAD PIN */
|
||
|
||
if (!pininfo || pininfo->max_length < 1)
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
if (!desc_text && pininfo->min_digits)
|
||
desc_text = _("Please enter your PIN, so that the secret key "
|
||
"can be unlocked for this session");
|
||
else if (!desc_text)
|
||
desc_text = _("Please enter your passphrase, so that the secret key "
|
||
"can be unlocked for this session");
|
||
|
||
if (prompt_text)
|
||
is_pin = !!strstr (prompt_text, "PIN");
|
||
else
|
||
is_pin = desc_text && strstr (desc_text, "PIN");
|
||
|
||
rc = start_pinentry (ctrl);
|
||
if (rc)
|
||
return rc;
|
||
|
||
/* If we have a KEYINFO string and are normal, user, or ssh cache
|
||
mode, we tell that the Pinentry so it may use it for own caching
|
||
purposes. Most pinentries won't have this implemented and thus
|
||
we do not error out in this case. */
|
||
if (keyinfo && (cache_mode == CACHE_MODE_NORMAL
|
||
|| cache_mode == CACHE_MODE_USER
|
||
|| cache_mode == CACHE_MODE_SSH))
|
||
snprintf (line, DIM(line)-1, "SETKEYINFO %c/%s",
|
||
cache_mode == CACHE_MODE_USER? 'u' :
|
||
cache_mode == CACHE_MODE_SSH? 's' : 'n',
|
||
keyinfo);
|
||
else
|
||
snprintf (line, DIM(line)-1, "SETKEYINFO --clear");
|
||
|
||
rc = assuan_transact (entry_ctx, line,
|
||
NULL, NULL, NULL, NULL, NULL, NULL);
|
||
if (rc && gpg_err_code (rc) != GPG_ERR_ASS_UNKNOWN_CMD)
|
||
return unlock_pinentry (rc);
|
||
|
||
snprintf (line, DIM(line)-1, "SETDESC %s", desc_text);
|
||
line[DIM(line)-1] = 0;
|
||
rc = assuan_transact (entry_ctx, line, NULL, NULL, NULL, NULL, NULL, NULL);
|
||
if (rc)
|
||
return unlock_pinentry (rc);
|
||
|
||
snprintf (line, DIM(line)-1, "SETPROMPT %s",
|
||
prompt_text? prompt_text : is_pin? "PIN:" : "Passphrase:");
|
||
line[DIM(line)-1] = 0;
|
||
rc = assuan_transact (entry_ctx, line, NULL, NULL, NULL, NULL, NULL, NULL);
|
||
if (rc)
|
||
return unlock_pinentry (rc);
|
||
|
||
/* If a passphrase quality indicator has been requested and a
|
||
minimum passphrase length has not been disabled, send the command
|
||
to the pinentry. */
|
||
if (pininfo->with_qualitybar && opt.min_passphrase_len )
|
||
{
|
||
rc = setup_qualitybar ();
|
||
if (rc)
|
||
return unlock_pinentry (rc);
|
||
}
|
||
|
||
if (initial_errtext)
|
||
{
|
||
snprintf (line, DIM(line)-1, "SETERROR %s", initial_errtext);
|
||
line[DIM(line)-1] = 0;
|
||
rc = assuan_transact (entry_ctx, line,
|
||
NULL, NULL, NULL, NULL, NULL, NULL);
|
||
if (rc)
|
||
return unlock_pinentry (rc);
|
||
}
|
||
|
||
for (;pininfo->failed_tries < pininfo->max_tries; pininfo->failed_tries++)
|
||
{
|
||
memset (&parm, 0, sizeof parm);
|
||
parm.size = pininfo->max_length;
|
||
*pininfo->pin = 0; /* Reset the PIN. */
|
||
parm.buffer = (unsigned char*)pininfo->pin;
|
||
|
||
if (errtext)
|
||
{
|
||
/* TRANSLATORS: The string is appended to an error message in
|
||
the pinentry. The %s is the actual error message, the
|
||
two %d give the current and maximum number of tries. */
|
||
snprintf (line, DIM(line)-1, _("SETERROR %s (try %d of %d)"),
|
||
errtext, pininfo->failed_tries+1, pininfo->max_tries);
|
||
line[DIM(line)-1] = 0;
|
||
rc = assuan_transact (entry_ctx, line,
|
||
NULL, NULL, NULL, NULL, NULL, NULL);
|
||
if (rc)
|
||
return unlock_pinentry (rc);
|
||
errtext = NULL;
|
||
}
|
||
|
||
saveflag = assuan_get_flag (entry_ctx, ASSUAN_CONFIDENTIAL);
|
||
assuan_begin_confidential (entry_ctx);
|
||
pinentry_status = 0;
|
||
rc = assuan_transact (entry_ctx, "GETPIN", getpin_cb, &parm,
|
||
inq_quality, entry_ctx,
|
||
pinentry_status_cb, &pinentry_status);
|
||
assuan_set_flag (entry_ctx, ASSUAN_CONFIDENTIAL, saveflag);
|
||
/* Most pinentries out in the wild return the old Assuan error code
|
||
for canceled which gets translated to an assuan Cancel error and
|
||
not to the code for a user cancel. Fix this here. */
|
||
if (rc && gpg_err_source (rc)
|
||
&& gpg_err_code (rc) == GPG_ERR_ASS_CANCELED)
|
||
rc = gpg_err_make (gpg_err_source (rc), GPG_ERR_CANCELED);
|
||
|
||
if (gpg_err_code (rc) == GPG_ERR_ASS_TOO_MUCH_DATA)
|
||
errtext = is_pin? _("PIN too long")
|
||
: _("Passphrase too long");
|
||
else if (rc)
|
||
return unlock_pinentry (rc);
|
||
|
||
if (!errtext && pininfo->min_digits)
|
||
{
|
||
/* do some basic checks on the entered PIN. */
|
||
if (!all_digitsp (pininfo->pin))
|
||
errtext = _("Invalid characters in PIN");
|
||
else if (pininfo->max_digits
|
||
&& strlen (pininfo->pin) > pininfo->max_digits)
|
||
errtext = _("PIN too long");
|
||
else if (strlen (pininfo->pin) < pininfo->min_digits)
|
||
errtext = _("PIN too short");
|
||
}
|
||
|
||
if (!errtext && pininfo->check_cb)
|
||
{
|
||
/* More checks by utilizing the optional callback. */
|
||
pininfo->cb_errtext = NULL;
|
||
rc = pininfo->check_cb (pininfo);
|
||
if (rc == -1 && pininfo->cb_errtext)
|
||
errtext = pininfo->cb_errtext;
|
||
else if (gpg_err_code (rc) == GPG_ERR_BAD_PASSPHRASE
|
||
|| gpg_err_code (rc) == GPG_ERR_BAD_PIN)
|
||
errtext = (is_pin? _("Bad PIN")
|
||
: _("Bad Passphrase"));
|
||
else if (rc)
|
||
return unlock_pinentry (rc);
|
||
}
|
||
|
||
if (!errtext)
|
||
return unlock_pinentry (0); /* okay, got a PIN or passphrase */
|
||
|
||
if ((pinentry_status & PINENTRY_STATUS_PASSWORD_FROM_CACHE))
|
||
/* The password was read from the cache. Don't count this
|
||
against the retry count. */
|
||
pininfo->failed_tries --;
|
||
}
|
||
|
||
return unlock_pinentry (gpg_error (pininfo->min_digits? GPG_ERR_BAD_PIN
|
||
: GPG_ERR_BAD_PASSPHRASE));
|
||
}
|
||
|
||
|
||
|
||
/* Ask for the passphrase using the supplied arguments. The returned
|
||
passphrase needs to be freed by the caller. */
|
||
int
|
||
agent_get_passphrase (ctrl_t ctrl,
|
||
char **retpass, const char *desc, const char *prompt,
|
||
const char *errtext, int with_qualitybar,
|
||
const char *keyinfo, cache_mode_t cache_mode)
|
||
{
|
||
|
||
int rc;
|
||
char line[ASSUAN_LINELENGTH];
|
||
struct entry_parm_s parm;
|
||
int saveflag;
|
||
|
||
*retpass = NULL;
|
||
if (opt.batch)
|
||
return gpg_error (GPG_ERR_BAD_PASSPHRASE);
|
||
|
||
rc = start_pinentry (ctrl);
|
||
if (rc)
|
||
return rc;
|
||
|
||
if (!prompt)
|
||
prompt = desc && strstr (desc, "PIN")? "PIN": _("Passphrase");
|
||
|
||
|
||
/* If we have a KEYINFO string and are normal, user, or ssh cache
|
||
mode, we tell that the Pinentry so it may use it for own caching
|
||
purposes. Most pinentries won't have this implemented and thus
|
||
we do not error out in this case. */
|
||
if (keyinfo && (cache_mode == CACHE_MODE_NORMAL
|
||
|| cache_mode == CACHE_MODE_USER
|
||
|| cache_mode == CACHE_MODE_SSH))
|
||
snprintf (line, DIM(line)-1, "SETKEYINFO %c/%s",
|
||
cache_mode == CACHE_MODE_USER? 'u' :
|
||
cache_mode == CACHE_MODE_SSH? 's' : 'n',
|
||
keyinfo);
|
||
else
|
||
snprintf (line, DIM(line)-1, "SETKEYINFO --clear");
|
||
|
||
rc = assuan_transact (entry_ctx, line,
|
||
NULL, NULL, NULL, NULL, NULL, NULL);
|
||
if (rc && gpg_err_code (rc) != GPG_ERR_ASS_UNKNOWN_CMD)
|
||
return unlock_pinentry (rc);
|
||
|
||
|
||
if (desc)
|
||
snprintf (line, DIM(line)-1, "SETDESC %s", desc);
|
||
else
|
||
snprintf (line, DIM(line)-1, "RESET");
|
||
line[DIM(line)-1] = 0;
|
||
rc = assuan_transact (entry_ctx, line, NULL, NULL, NULL, NULL, NULL, NULL);
|
||
if (rc)
|
||
return unlock_pinentry (rc);
|
||
|
||
snprintf (line, DIM(line)-1, "SETPROMPT %s", prompt);
|
||
line[DIM(line)-1] = 0;
|
||
rc = assuan_transact (entry_ctx, line, NULL, NULL, NULL, NULL, NULL, NULL);
|
||
if (rc)
|
||
return unlock_pinentry (rc);
|
||
|
||
if (with_qualitybar && opt.min_passphrase_len)
|
||
{
|
||
rc = setup_qualitybar ();
|
||
if (rc)
|
||
return unlock_pinentry (rc);
|
||
}
|
||
|
||
if (errtext)
|
||
{
|
||
snprintf (line, DIM(line)-1, "SETERROR %s", errtext);
|
||
line[DIM(line)-1] = 0;
|
||
rc = assuan_transact (entry_ctx, line, NULL, NULL, NULL, NULL, NULL, NULL);
|
||
if (rc)
|
||
return unlock_pinentry (rc);
|
||
}
|
||
|
||
memset (&parm, 0, sizeof parm);
|
||
parm.size = ASSUAN_LINELENGTH/2 - 5;
|
||
parm.buffer = gcry_malloc_secure (parm.size+10);
|
||
if (!parm.buffer)
|
||
return unlock_pinentry (out_of_core ());
|
||
|
||
saveflag = assuan_get_flag (entry_ctx, ASSUAN_CONFIDENTIAL);
|
||
assuan_begin_confidential (entry_ctx);
|
||
rc = assuan_transact (entry_ctx, "GETPIN", getpin_cb, &parm,
|
||
inq_quality, entry_ctx, NULL, NULL);
|
||
assuan_set_flag (entry_ctx, ASSUAN_CONFIDENTIAL, saveflag);
|
||
/* Most pinentries out in the wild return the old Assuan error code
|
||
for canceled which gets translated to an assuan Cancel error and
|
||
not to the code for a user cancel. Fix this here. */
|
||
if (rc && gpg_err_source (rc) && gpg_err_code (rc) == GPG_ERR_ASS_CANCELED)
|
||
rc = gpg_err_make (gpg_err_source (rc), GPG_ERR_CANCELED);
|
||
if (rc)
|
||
xfree (parm.buffer);
|
||
else
|
||
*retpass = parm.buffer;
|
||
return unlock_pinentry (rc);
|
||
}
|
||
|
||
|
||
|
||
/* Pop up the PIN-entry, display the text and the prompt and ask the
|
||
user to confirm this. We return 0 for success, ie. the user
|
||
confirmed it, GPG_ERR_NOT_CONFIRMED for what the text says or an
|
||
other error. If WITH_CANCEL it true an extra cancel button is
|
||
displayed to allow the user to easily return a GPG_ERR_CANCELED.
|
||
if the Pinentry does not support this, the user can still cancel by
|
||
closing the Pinentry window. */
|
||
int
|
||
agent_get_confirmation (ctrl_t ctrl,
|
||
const char *desc, const char *ok,
|
||
const char *notok, int with_cancel)
|
||
{
|
||
int rc;
|
||
char line[ASSUAN_LINELENGTH];
|
||
|
||
rc = start_pinentry (ctrl);
|
||
if (rc)
|
||
return rc;
|
||
|
||
if (desc)
|
||
snprintf (line, DIM(line)-1, "SETDESC %s", desc);
|
||
else
|
||
snprintf (line, DIM(line)-1, "RESET");
|
||
line[DIM(line)-1] = 0;
|
||
rc = assuan_transact (entry_ctx, line, NULL, NULL, NULL, NULL, NULL, NULL);
|
||
/* Most pinentries out in the wild return the old Assuan error code
|
||
for canceled which gets translated to an assuan Cancel error and
|
||
not to the code for a user cancel. Fix this here. */
|
||
if (rc && gpg_err_source (rc) && gpg_err_code (rc) == GPG_ERR_ASS_CANCELED)
|
||
rc = gpg_err_make (gpg_err_source (rc), GPG_ERR_CANCELED);
|
||
|
||
if (rc)
|
||
return unlock_pinentry (rc);
|
||
|
||
if (ok)
|
||
{
|
||
snprintf (line, DIM(line)-1, "SETOK %s", ok);
|
||
line[DIM(line)-1] = 0;
|
||
rc = assuan_transact (entry_ctx,
|
||
line, NULL, NULL, NULL, NULL, NULL, NULL);
|
||
if (rc)
|
||
return unlock_pinentry (rc);
|
||
}
|
||
if (notok)
|
||
{
|
||
/* Try to use the newer NOTOK feature if a cancel button is
|
||
requested. If no cancel button is requested we keep on using
|
||
the standard cancel. */
|
||
if (with_cancel)
|
||
{
|
||
snprintf (line, DIM(line)-1, "SETNOTOK %s", notok);
|
||
line[DIM(line)-1] = 0;
|
||
rc = assuan_transact (entry_ctx,
|
||
line, NULL, NULL, NULL, NULL, NULL, NULL);
|
||
}
|
||
else
|
||
rc = GPG_ERR_ASS_UNKNOWN_CMD;
|
||
|
||
if (gpg_err_code (rc) == GPG_ERR_ASS_UNKNOWN_CMD)
|
||
{
|
||
snprintf (line, DIM(line)-1, "SETCANCEL %s", notok);
|
||
line[DIM(line)-1] = 0;
|
||
rc = assuan_transact (entry_ctx, line,
|
||
NULL, NULL, NULL, NULL, NULL, NULL);
|
||
}
|
||
if (rc)
|
||
return unlock_pinentry (rc);
|
||
}
|
||
|
||
rc = assuan_transact (entry_ctx, "CONFIRM",
|
||
NULL, NULL, NULL, NULL, NULL, NULL);
|
||
if (rc && gpg_err_source (rc) && gpg_err_code (rc) == GPG_ERR_ASS_CANCELED)
|
||
rc = gpg_err_make (gpg_err_source (rc), GPG_ERR_CANCELED);
|
||
|
||
return unlock_pinentry (rc);
|
||
}
|
||
|
||
|
||
|
||
/* Pop up the PINentry, display the text DESC and a button with the
|
||
text OK_BTN (which may be NULL to use the default of "OK") and waut
|
||
for the user to hit this button. The return value is not
|
||
relevant. */
|
||
int
|
||
agent_show_message (ctrl_t ctrl, const char *desc, const char *ok_btn)
|
||
{
|
||
int rc;
|
||
char line[ASSUAN_LINELENGTH];
|
||
|
||
rc = start_pinentry (ctrl);
|
||
if (rc)
|
||
return rc;
|
||
|
||
if (desc)
|
||
snprintf (line, DIM(line)-1, "SETDESC %s", desc);
|
||
else
|
||
snprintf (line, DIM(line)-1, "RESET");
|
||
line[DIM(line)-1] = 0;
|
||
rc = assuan_transact (entry_ctx, line, NULL, NULL, NULL, NULL, NULL, NULL);
|
||
/* Most pinentries out in the wild return the old Assuan error code
|
||
for canceled which gets translated to an assuan Cancel error and
|
||
not to the code for a user cancel. Fix this here. */
|
||
if (rc && gpg_err_source (rc) && gpg_err_code (rc) == GPG_ERR_ASS_CANCELED)
|
||
rc = gpg_err_make (gpg_err_source (rc), GPG_ERR_CANCELED);
|
||
|
||
if (rc)
|
||
return unlock_pinentry (rc);
|
||
|
||
if (ok_btn)
|
||
{
|
||
snprintf (line, DIM(line)-1, "SETOK %s", ok_btn);
|
||
line[DIM(line)-1] = 0;
|
||
rc = assuan_transact (entry_ctx, line, NULL, NULL, NULL,
|
||
NULL, NULL, NULL);
|
||
if (rc)
|
||
return unlock_pinentry (rc);
|
||
}
|
||
|
||
rc = assuan_transact (entry_ctx, "CONFIRM --one-button", NULL, NULL, NULL,
|
||
NULL, NULL, NULL);
|
||
if (rc && gpg_err_source (rc) && gpg_err_code (rc) == GPG_ERR_ASS_CANCELED)
|
||
rc = gpg_err_make (gpg_err_source (rc), GPG_ERR_CANCELED);
|
||
|
||
return unlock_pinentry (rc);
|
||
}
|
||
|
||
|
||
/* The thread running the popup message. */
|
||
static void *
|
||
popup_message_thread (void *arg)
|
||
{
|
||
(void)arg;
|
||
|
||
/* We use the --one-button hack instead of the MESSAGE command to
|
||
allow the use of old Pinentries. Those old Pinentries will then
|
||
show an additional Cancel button but that is mostly a visual
|
||
annoyance. */
|
||
assuan_transact (entry_ctx, "CONFIRM --one-button",
|
||
NULL, NULL, NULL, NULL, NULL, NULL);
|
||
popup_finished = 1;
|
||
return NULL;
|
||
}
|
||
|
||
|
||
/* Pop up a message window similar to the confirm one but keep it open
|
||
until agent_popup_message_stop has been called. It is crucial for
|
||
the caller to make sure that the stop function gets called as soon
|
||
as the message is not anymore required because the message is
|
||
system modal and all other attempts to use the pinentry will fail
|
||
(after a timeout). */
|
||
int
|
||
agent_popup_message_start (ctrl_t ctrl, const char *desc, const char *ok_btn)
|
||
{
|
||
int rc;
|
||
char line[ASSUAN_LINELENGTH];
|
||
pth_attr_t tattr;
|
||
|
||
rc = start_pinentry (ctrl);
|
||
if (rc)
|
||
return rc;
|
||
|
||
if (desc)
|
||
snprintf (line, DIM(line)-1, "SETDESC %s", desc);
|
||
else
|
||
snprintf (line, DIM(line)-1, "RESET");
|
||
line[DIM(line)-1] = 0;
|
||
rc = assuan_transact (entry_ctx, line, NULL, NULL, NULL, NULL, NULL, NULL);
|
||
if (rc)
|
||
return unlock_pinentry (rc);
|
||
|
||
if (ok_btn)
|
||
{
|
||
snprintf (line, DIM(line)-1, "SETOK %s", ok_btn);
|
||
line[DIM(line)-1] = 0;
|
||
rc = assuan_transact (entry_ctx, line, NULL,NULL,NULL,NULL,NULL,NULL);
|
||
if (rc)
|
||
return unlock_pinentry (rc);
|
||
}
|
||
|
||
tattr = pth_attr_new();
|
||
pth_attr_set (tattr, PTH_ATTR_JOINABLE, 1);
|
||
pth_attr_set (tattr, PTH_ATTR_STACK_SIZE, 256*1024);
|
||
pth_attr_set (tattr, PTH_ATTR_NAME, "popup-message");
|
||
|
||
popup_finished = 0;
|
||
popup_tid = pth_spawn (tattr, popup_message_thread, NULL);
|
||
if (!popup_tid)
|
||
{
|
||
rc = gpg_error_from_syserror ();
|
||
log_error ("error spawning popup message handler: %s\n",
|
||
strerror (errno) );
|
||
pth_attr_destroy (tattr);
|
||
return unlock_pinentry (rc);
|
||
}
|
||
pth_attr_destroy (tattr);
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Close a popup window. */
|
||
void
|
||
agent_popup_message_stop (ctrl_t ctrl)
|
||
{
|
||
int rc;
|
||
pid_t pid;
|
||
|
||
(void)ctrl;
|
||
|
||
if (!popup_tid || !entry_ctx)
|
||
{
|
||
log_debug ("agent_popup_message_stop called with no active popup\n");
|
||
return;
|
||
}
|
||
|
||
pid = assuan_get_pid (entry_ctx);
|
||
if (pid == (pid_t)(-1))
|
||
; /* No pid available can't send a kill. */
|
||
else if (popup_finished)
|
||
; /* Already finished and ready for joining. */
|
||
#ifdef HAVE_W32_SYSTEM
|
||
/* Older versions of assuan set PID to 0 on Windows to indicate an
|
||
invalid value. */
|
||
else if (pid != (pid_t) INVALID_HANDLE_VALUE
|
||
&& pid != 0)
|
||
{
|
||
HANDLE process = (HANDLE) pid;
|
||
|
||
/* Arbitrary error code. */
|
||
TerminateProcess (process, 1);
|
||
}
|
||
#else
|
||
else if (pid && ((rc=waitpid (pid, NULL, WNOHANG))==-1 || (rc == pid)) )
|
||
{ /* The daemon already died. No need to send a kill. However
|
||
because we already waited for the process, we need to tell
|
||
assuan that it should not wait again (done by
|
||
unlock_pinentry). */
|
||
if (rc == pid)
|
||
assuan_set_flag (entry_ctx, ASSUAN_NO_WAITPID, 1);
|
||
}
|
||
else if (pid > 0)
|
||
kill (pid, SIGINT);
|
||
#endif
|
||
|
||
/* Now wait for the thread to terminate. */
|
||
rc = pth_join (popup_tid, NULL);
|
||
if (!rc)
|
||
log_debug ("agent_popup_message_stop: pth_join failed: %s\n",
|
||
strerror (errno));
|
||
popup_tid = NULL;
|
||
entry_owner = NULL;
|
||
|
||
/* Now we can close the connection. */
|
||
unlock_pinentry (0);
|
||
}
|
||
|
||
|
||
int
|
||
agent_clear_passphrase (ctrl_t ctrl,
|
||
const char *keyinfo, cache_mode_t cache_mode)
|
||
{
|
||
int rc;
|
||
char line[ASSUAN_LINELENGTH];
|
||
|
||
if (! (keyinfo && (cache_mode == CACHE_MODE_NORMAL
|
||
|| cache_mode == CACHE_MODE_USER
|
||
|| cache_mode == CACHE_MODE_SSH)))
|
||
return gpg_error (GPG_ERR_NOT_SUPPORTED);
|
||
|
||
rc = start_pinentry (ctrl);
|
||
if (rc)
|
||
return rc;
|
||
|
||
snprintf (line, DIM(line)-1, "CLEARPASSPHRASE %c/%s",
|
||
cache_mode == CACHE_MODE_USER? 'u' :
|
||
cache_mode == CACHE_MODE_SSH? 's' : 'n',
|
||
keyinfo);
|
||
rc = assuan_transact (entry_ctx, line,
|
||
NULL, NULL, NULL, NULL, NULL, NULL);
|
||
|
||
return unlock_pinentry (rc);
|
||
}
|