mirror of
git://git.gnupg.org/gnupg.git
synced 2024-09-07 12:56:21 +02:00
![Jakub Jelen](/assets/img/avatar_default.png)
* agent/call-daemon.c (daemon_start): free wctp * agent/call-scd.c (agent_card_pksign): return error instead of noop (card_keyinfo_cb): free keyinfo. Restructure to avoid a goto backwards. * agent/protect.c (agent_get_shadow_info_type): allocate only as a last action. Catch xtrymalloc failure. (agent_is_tpm2_key): Free buf. -- Signed-off-by: Jakub Jelen <jjelen@redhat.com> Additional changes are: - Restructure to avoid a goto backwards. - Catch xtrymalloc failure. GnuPG-bug-id: 5393 Signed-off-by: Werner Koch <wk@gnupg.org>
687 lines
19 KiB
C
687 lines
19 KiB
C
/* call-daemon - Common code for the call-XXX.c modules
|
|
* Copyright (C) 2001, 2002, 2005, 2007, 2010,
|
|
* 2011 Free Software Foundation, Inc.
|
|
* Copyright (C) 2013 Werner Koch
|
|
*
|
|
* This file is part of GnuPG.
|
|
*
|
|
* GnuPG is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* GnuPG is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, see <https://www.gnu.org/licenses/>.
|
|
* SPDX-License-Identifier: GPL-3.0-or-later
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
#include <unistd.h>
|
|
#ifdef HAVE_SIGNAL_H
|
|
# include <signal.h>
|
|
#endif
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#ifndef HAVE_W32_SYSTEM
|
|
#include <sys/wait.h>
|
|
#endif
|
|
#include <npth.h>
|
|
|
|
#include "agent.h"
|
|
#include <assuan.h>
|
|
#include "../common/strlist.h"
|
|
|
|
/* Daemon type to module mapping. Make sure that they are added in the
|
|
* same order as given by the daemon_type enum. */
|
|
static const int daemon_modules[DAEMON_MAX_TYPE] =
|
|
{
|
|
GNUPG_MODULE_NAME_SCDAEMON,
|
|
GNUPG_MODULE_NAME_TPM2DAEMON
|
|
};
|
|
|
|
/* Definition of module local data of the CTRL structure. */
|
|
struct daemon_local_s
|
|
{
|
|
/* We keep a list of all allocated context with an anchor at
|
|
DAEMON_LOCAL_LIST (see below). */
|
|
struct daemon_local_s *next_local;
|
|
|
|
/* Link back to the global structure. */
|
|
struct daemon_global_s *g;
|
|
|
|
assuan_context_t ctx; /* NULL or session context for the daemon
|
|
used with this connection. */
|
|
unsigned int in_use: 1; /* CTX is in use. */
|
|
unsigned int invalid:1; /* CTX is invalid, should be released. */
|
|
};
|
|
|
|
|
|
/* Primary holder of all the started daemons */
|
|
struct daemon_global_s
|
|
{
|
|
/* To keep track of all active daemon contexts, we keep a linked list
|
|
anchored at this variable. */
|
|
struct daemon_local_s *local_list;
|
|
/* A malloced string with the name of the socket to be used for
|
|
additional connections. May be NULL if not provided by
|
|
daemon. */
|
|
char *socket_name;
|
|
|
|
/* The context of the primary connection. This is also used as a flag
|
|
to indicate whether the daemon has been started. */
|
|
assuan_context_t primary_ctx;
|
|
|
|
/* To allow reuse of the primary connection, the following flag is set
|
|
to true if the primary context has been reset and is not in use by
|
|
any connection. */
|
|
int primary_ctx_reusable;
|
|
};
|
|
|
|
static struct daemon_global_s daemon_global[DAEMON_MAX_TYPE];
|
|
|
|
|
|
/* A Mutex used inside the start_daemon function. */
|
|
static npth_mutex_t start_daemon_lock;
|
|
|
|
|
|
/* Communication object for wait_child_thread. */
|
|
struct wait_child_thread_parm_s
|
|
{
|
|
enum daemon_type type;
|
|
pid_t pid;
|
|
};
|
|
|
|
|
|
/* Thread to wait for daemon termination and cleanup of resources. */
|
|
static void *
|
|
wait_child_thread (void *arg)
|
|
{
|
|
int err;
|
|
struct wait_child_thread_parm_s *parm = arg;
|
|
enum daemon_type type = parm->type;
|
|
pid_t pid = parm->pid;
|
|
#ifndef HAVE_W32_SYSTEM
|
|
int wstatus;
|
|
#endif
|
|
const char *name = gnupg_module_name (daemon_modules[type]);
|
|
struct daemon_global_s *g = &daemon_global[type];
|
|
struct daemon_local_s *sl;
|
|
|
|
xfree (parm); /* We have copied all data to the stack. */
|
|
|
|
#ifdef HAVE_W32_SYSTEM
|
|
npth_unprotect ();
|
|
/* Note that although we use a pid_t here, it is actually a HANDLE. */
|
|
WaitForSingleObject ((HANDLE)pid, INFINITE);
|
|
npth_protect ();
|
|
log_info ("daemon %s finished\n", name);
|
|
#else /* !HAVE_W32_SYSTEM*/
|
|
|
|
again:
|
|
npth_unprotect ();
|
|
err = waitpid (pid, &wstatus, 0);
|
|
npth_protect ();
|
|
|
|
if (err < 0)
|
|
{
|
|
if (errno == EINTR)
|
|
goto again;
|
|
log_error ("waitpid for %s failed: %s\n", name, strerror (errno));
|
|
return NULL;
|
|
}
|
|
else
|
|
{
|
|
if (WIFEXITED (wstatus))
|
|
log_info ("daemon %s finished (status %d)\n",
|
|
name, WEXITSTATUS (wstatus));
|
|
else if (WIFSIGNALED (wstatus))
|
|
log_info ("daemon %s killed by signal %d\n", name, WTERMSIG (wstatus));
|
|
else
|
|
{
|
|
if (WIFSTOPPED (wstatus))
|
|
log_info ("daemon %s stopped by signal %d\n",
|
|
name, WSTOPSIG (wstatus));
|
|
goto again;
|
|
}
|
|
}
|
|
#endif /*!HAVE_W32_SYSTEM*/
|
|
|
|
agent_flush_cache (1); /* Flush the PIN cache. */
|
|
|
|
err = npth_mutex_lock (&start_daemon_lock);
|
|
if (err)
|
|
{
|
|
log_error ("failed to acquire the start_daemon lock: %s\n",
|
|
strerror (err));
|
|
}
|
|
else
|
|
{
|
|
assuan_set_flag (g->primary_ctx, ASSUAN_NO_WAITPID, 1);
|
|
|
|
for (sl = g->local_list; sl; sl = sl->next_local)
|
|
{
|
|
sl->invalid = 1;
|
|
if (!sl->in_use && sl->ctx)
|
|
{
|
|
assuan_release (sl->ctx);
|
|
sl->ctx = NULL;
|
|
}
|
|
}
|
|
|
|
g->primary_ctx = NULL;
|
|
g->primary_ctx_reusable = 0;
|
|
|
|
xfree (g->socket_name);
|
|
g->socket_name = NULL;
|
|
|
|
err = npth_mutex_unlock (&start_daemon_lock);
|
|
if (err)
|
|
log_error ("failed to release the start_daemon lock"
|
|
" after waitpid for %s: %s\n", name, strerror (err));
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/* This function shall be called after having accessed the daemon. It
|
|
* is currently not very useful but gives an opportunity to keep track
|
|
* of connections currently calling daemon. Note that the "lock"
|
|
* operation is done by the daemon_start function which must be called
|
|
* and error checked before any daemon operation. CTRL is the usual
|
|
* connection context and RC the error code to be passed through the
|
|
* function. */
|
|
gpg_error_t
|
|
daemon_unlock (enum daemon_type type, ctrl_t ctrl, gpg_error_t rc)
|
|
{
|
|
gpg_error_t err;
|
|
|
|
if (ctrl->d_local[type]->in_use == 0)
|
|
{
|
|
log_error ("%s: CTX for type %d is not in use\n", __func__, (int)type);
|
|
if (!rc)
|
|
rc = gpg_error (GPG_ERR_INTERNAL);
|
|
}
|
|
err = npth_mutex_lock (&start_daemon_lock);
|
|
if (err)
|
|
{
|
|
log_error ("failed to acquire the start_daemon lock: %s\n",
|
|
strerror (err));
|
|
return gpg_error (GPG_ERR_INTERNAL);
|
|
}
|
|
ctrl->d_local[type]->in_use = 0;
|
|
if (ctrl->d_local[type]->invalid)
|
|
{
|
|
assuan_release (ctrl->d_local[type]->ctx);
|
|
ctrl->d_local[type]->ctx = NULL;
|
|
ctrl->d_local[type]->invalid = 0;
|
|
}
|
|
err = npth_mutex_unlock (&start_daemon_lock);
|
|
if (err)
|
|
{
|
|
log_error ("failed to release the start_daemon lock: %s\n",
|
|
strerror (err));
|
|
return gpg_error (GPG_ERR_INTERNAL);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
|
|
/* To make sure we leave no secrets in our image after forking of the
|
|
daemon, we use this callback. */
|
|
static void
|
|
atfork_cb (void *opaque, int where)
|
|
{
|
|
(void)opaque;
|
|
|
|
if (!where)
|
|
gcry_control (GCRYCTL_TERM_SECMEM);
|
|
}
|
|
|
|
|
|
/* Fork off the daemon if this has not already been done. Lock the
|
|
* daemon and make sure that a proper context has been setup in CTRL.
|
|
* This function might also lock the daemon, which means that the
|
|
* caller must call unlock_daemon after this function has returned
|
|
* success and the actual Assuan transaction been done. */
|
|
gpg_error_t
|
|
daemon_start (enum daemon_type type, ctrl_t ctrl)
|
|
{
|
|
gpg_error_t err = 0;
|
|
const char *pgmname;
|
|
assuan_context_t ctx = NULL;
|
|
const char *argv[5];
|
|
assuan_fd_t no_close_list[3];
|
|
int i;
|
|
int rc;
|
|
char *abs_homedir = NULL;
|
|
struct daemon_global_s *g = &daemon_global[type];
|
|
const char *name = gnupg_module_name (daemon_modules[type]);
|
|
|
|
log_assert (type < DAEMON_MAX_TYPE);
|
|
/* if this fails, you forgot to add your new type to daemon_modules */
|
|
log_assert (DAEMON_MAX_TYPE == DIM (daemon_modules));
|
|
|
|
if (opt.disable_daemon[type])
|
|
return gpg_error (GPG_ERR_NOT_SUPPORTED);
|
|
|
|
if (ctrl->d_local[type] && ctrl->d_local[type]->ctx)
|
|
{
|
|
ctrl->d_local[type]->in_use = 1;
|
|
return 0; /* Okay, the context is fine. */
|
|
}
|
|
|
|
if (ctrl->d_local[type] && ctrl->d_local[type]->in_use)
|
|
{
|
|
log_error ("%s: CTX of type %d is in use\n", __func__, type);
|
|
return gpg_error (GPG_ERR_INTERNAL);
|
|
}
|
|
|
|
/* We need to serialize the access to scd_local_list and primary_scd_ctx. */
|
|
rc = npth_mutex_lock (&start_daemon_lock);
|
|
if (rc)
|
|
{
|
|
log_error ("failed to acquire the start_daemon lock: %s\n",
|
|
strerror (rc));
|
|
return gpg_error (GPG_ERR_INTERNAL);
|
|
}
|
|
|
|
/* If this is the first call for this session, setup the local data
|
|
structure. */
|
|
if (!ctrl->d_local[type])
|
|
{
|
|
ctrl->d_local[type] = xtrycalloc (1, sizeof *ctrl->d_local[type]);
|
|
if (!ctrl->d_local[type])
|
|
{
|
|
err = gpg_error_from_syserror ();
|
|
rc = npth_mutex_unlock (&start_daemon_lock);
|
|
if (rc)
|
|
log_error ("failed to release the start_daemon lock: %s\n",
|
|
strerror (rc));
|
|
return err;
|
|
}
|
|
ctrl->d_local[type]->g = g;
|
|
ctrl->d_local[type]->next_local = g->local_list;
|
|
g->local_list = ctrl->d_local[type]; /* FIXME: CHECK the G thing */
|
|
}
|
|
|
|
ctrl->d_local[type]->in_use = 1;
|
|
|
|
/* Check whether the pipe server has already been started and in
|
|
this case either reuse a lingering pipe connection or establish a
|
|
new socket based one. */
|
|
if (g->primary_ctx && g->primary_ctx_reusable)
|
|
{
|
|
ctx = g->primary_ctx;
|
|
g->primary_ctx_reusable = 0;
|
|
if (opt.verbose)
|
|
log_info ("new connection to %s daemon established (reusing)\n",
|
|
name);
|
|
goto leave;
|
|
}
|
|
|
|
rc = assuan_new (&ctx);
|
|
if (rc)
|
|
{
|
|
log_error ("can't allocate assuan context: %s\n", gpg_strerror (rc));
|
|
err = rc;
|
|
goto leave;
|
|
}
|
|
|
|
if (g->socket_name)
|
|
{
|
|
rc = assuan_socket_connect (ctx, g->socket_name, 0, 0);
|
|
if (rc)
|
|
{
|
|
log_error ("can't connect to socket '%s': %s\n",
|
|
g->socket_name, gpg_strerror (rc));
|
|
err = gpg_error (GPG_ERR_NO_SCDAEMON);
|
|
goto leave;
|
|
}
|
|
|
|
if (opt.verbose)
|
|
log_info ("new connection to %s daemon established\n",
|
|
name);
|
|
goto leave;
|
|
}
|
|
|
|
if (g->primary_ctx)
|
|
{
|
|
log_info ("%s daemon is running but won't accept further connections\n",
|
|
name);
|
|
err = gpg_error (GPG_ERR_NO_SCDAEMON);
|
|
goto leave;
|
|
}
|
|
|
|
/* Nope, it has not been started. Fire it up now. */
|
|
if (opt.verbose)
|
|
log_info ("no running %s daemon - starting it\n", name);
|
|
|
|
agent_flush_cache (1); /* Make sure the PIN cache is flushed. */
|
|
|
|
if (fflush (NULL))
|
|
{
|
|
#ifndef HAVE_W32_SYSTEM
|
|
err = gpg_error_from_syserror ();
|
|
#endif
|
|
log_error ("error flushing pending output: %s\n", strerror (errno));
|
|
/* At least Windows XP fails here with EBADF. According to docs
|
|
and Wine an fflush(NULL) is the same as _flushall. However
|
|
the Wime implementation does not flush stdin,stdout and stderr
|
|
- see above. Lets try to ignore the error. */
|
|
#ifndef HAVE_W32_SYSTEM
|
|
goto leave;
|
|
#endif
|
|
}
|
|
|
|
if (!opt.daemon_program[type] || !*opt.daemon_program[type])
|
|
opt.daemon_program[type] = gnupg_module_name (daemon_modules[type]);
|
|
|
|
if ( !(pgmname = strrchr (opt.daemon_program[type], '/')))
|
|
pgmname = opt.daemon_program[type];
|
|
else
|
|
pgmname++;
|
|
|
|
argv[0] = pgmname;
|
|
argv[1] = "--multi-server";
|
|
if (gnupg_default_homedir_p ())
|
|
argv[2] = NULL;
|
|
else
|
|
{
|
|
abs_homedir = make_absfilename_try (gnupg_homedir (), NULL);
|
|
if (!abs_homedir)
|
|
{
|
|
log_error ("error building filename: %s\n",
|
|
gpg_strerror (gpg_error_from_syserror ()));
|
|
goto leave;
|
|
}
|
|
|
|
argv[2] = "--homedir";
|
|
argv[3] = abs_homedir;
|
|
argv[4] = NULL;
|
|
}
|
|
|
|
i=0;
|
|
if (!opt.running_detached)
|
|
{
|
|
if (log_get_fd () != -1)
|
|
no_close_list[i++] = assuan_fd_from_posix_fd (log_get_fd ());
|
|
no_close_list[i++] = assuan_fd_from_posix_fd (fileno (stderr));
|
|
}
|
|
no_close_list[i] = ASSUAN_INVALID_FD;
|
|
|
|
/* Connect to the daemon and perform initial handshaking. Use
|
|
detached flag so that under Windows DAEMON does not show up a
|
|
new window. */
|
|
rc = assuan_pipe_connect (ctx, opt.daemon_program[type], argv,
|
|
no_close_list, atfork_cb, NULL,
|
|
ASSUAN_PIPE_CONNECT_DETACHED);
|
|
if (rc)
|
|
{
|
|
log_error ("can't connect to the daemon %s: %s\n",
|
|
name, gpg_strerror (rc));
|
|
err = gpg_error (GPG_ERR_NO_SCDAEMON);
|
|
goto leave;
|
|
}
|
|
|
|
if (opt.verbose)
|
|
log_info ("first connection to daemon %s established\n", name);
|
|
|
|
|
|
/* Get the name of the additional socket opened by daemon. */
|
|
{
|
|
membuf_t data;
|
|
unsigned char *databuf;
|
|
size_t datalen;
|
|
|
|
xfree (g->socket_name);
|
|
g->socket_name = NULL;
|
|
init_membuf (&data, 256);
|
|
assuan_transact (ctx, "GETINFO socket_name",
|
|
put_membuf_cb, &data, NULL, NULL, NULL, NULL);
|
|
|
|
databuf = get_membuf (&data, &datalen);
|
|
if (databuf && datalen)
|
|
{
|
|
g->socket_name = xtrymalloc (datalen + 1);
|
|
if (!g->socket_name)
|
|
log_error ("warning: can't store socket name: %s\n",
|
|
strerror (errno));
|
|
else
|
|
{
|
|
memcpy (g->socket_name, databuf, datalen);
|
|
g->socket_name[datalen] = 0;
|
|
if (DBG_IPC)
|
|
log_debug ("additional connections at '%s'\n", g->socket_name);
|
|
}
|
|
}
|
|
xfree (databuf);
|
|
}
|
|
|
|
/* Tell the daemon we want him to send us an event signal. We
|
|
don't support this for W32CE. */
|
|
#ifndef HAVE_W32CE_SYSTEM
|
|
if (opt.sigusr2_enabled)
|
|
{
|
|
char buf[100];
|
|
|
|
#ifdef HAVE_W32_SYSTEM
|
|
snprintf (buf, sizeof buf, "OPTION event-signal=%lx",
|
|
(unsigned long)get_agent_daemon_notify_event ());
|
|
#else
|
|
snprintf (buf, sizeof buf, "OPTION event-signal=%d", SIGUSR2);
|
|
#endif
|
|
assuan_transact (ctx, buf, NULL, NULL, NULL, NULL, NULL, NULL);
|
|
}
|
|
#endif /*HAVE_W32CE_SYSTEM*/
|
|
|
|
g->primary_ctx = ctx;
|
|
g->primary_ctx_reusable = 0;
|
|
|
|
{
|
|
npth_t thread;
|
|
npth_attr_t tattr;
|
|
struct wait_child_thread_parm_s *wctp;
|
|
|
|
wctp = xtrymalloc (sizeof *wctp);
|
|
if (!wctp)
|
|
{
|
|
err = gpg_error_from_syserror ();
|
|
log_error ("error preparing wait_child_thread: %s\n", strerror (err));
|
|
goto leave;
|
|
}
|
|
|
|
wctp->type = type;
|
|
wctp->pid = assuan_get_pid (g->primary_ctx);
|
|
err = npth_attr_init (&tattr);
|
|
if (!err)
|
|
{
|
|
npth_attr_setdetachstate (&tattr, NPTH_CREATE_DETACHED);
|
|
err = npth_create (&thread, &tattr, wait_child_thread, wctp);
|
|
if (err)
|
|
log_error ("error spawning wait_child_thread: %s\n", strerror (err));
|
|
npth_attr_destroy (&tattr);
|
|
}
|
|
else
|
|
xfree (wctp);
|
|
}
|
|
|
|
leave:
|
|
rc = npth_mutex_unlock (&start_daemon_lock);
|
|
if (rc)
|
|
log_error ("failed to release the start_daemon lock: %s\n", strerror (rc));
|
|
|
|
xfree (abs_homedir);
|
|
if (err)
|
|
{
|
|
daemon_unlock (type, ctrl, err);
|
|
if (ctx)
|
|
assuan_release (ctx);
|
|
}
|
|
else
|
|
{
|
|
ctrl->d_local[type]->ctx = ctx;
|
|
ctrl->d_local[type]->invalid = 0;
|
|
}
|
|
return err;
|
|
}
|
|
|
|
|
|
/* This function must be called once to initialize this module. This
|
|
has to be done before a second thread is spawned. We can't do the
|
|
static initialization because NPth emulation code might not be able
|
|
to do a static init; in particular, it is not possible for W32. */
|
|
void
|
|
initialize_module_daemon (void)
|
|
{
|
|
static int initialized;
|
|
int err;
|
|
|
|
if (!initialized)
|
|
{
|
|
err = npth_mutex_init (&start_daemon_lock, NULL);
|
|
if (err)
|
|
log_fatal ("error initializing mutex: %s\n", strerror (err));
|
|
initialized = 1;
|
|
}
|
|
}
|
|
|
|
|
|
/* This function may be called to print information pertaining to the
|
|
current state of this module to the log. */
|
|
void
|
|
agent_daemon_dump_state (void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < DAEMON_MAX_TYPE; i++) {
|
|
struct daemon_global_s *g = &daemon_global[i];
|
|
|
|
log_info ("%s: name %s primary_ctx=%p pid=%ld reusable=%d\n", __func__,
|
|
gnupg_module_name (daemon_modules[i]),
|
|
g->primary_ctx,
|
|
(long)assuan_get_pid (g->primary_ctx),
|
|
g->primary_ctx_reusable);
|
|
if (g->socket_name)
|
|
log_info ("%s: socket='%s'\n", __func__, g->socket_name);
|
|
}
|
|
}
|
|
|
|
|
|
/* Check whether the daemon is active. This is a fast check without
|
|
* any locking and might give a wrong result if another thread is
|
|
* about to start the daemon or the daemon is about to be stopped. */
|
|
int
|
|
agent_daemon_check_running (enum daemon_type type)
|
|
{
|
|
return !!daemon_global[type].primary_ctx;
|
|
}
|
|
|
|
|
|
/* Send a kill command to the daemon of TYPE */
|
|
void
|
|
agent_kill_daemon (enum daemon_type type)
|
|
{
|
|
struct daemon_global_s *g = &daemon_global[type];
|
|
|
|
if (g->primary_ctx == NULL)
|
|
return;
|
|
/* FIXME: This assumes SCdaemon; we should add a new command
|
|
* (e.g. SHUTDOWN) so that there is no need to have a daemon
|
|
* specific command. */
|
|
assuan_transact (g->primary_ctx, "KILLSCD",
|
|
NULL, NULL, NULL, NULL, NULL, NULL);
|
|
agent_flush_cache (1); /* 1 := Flush the PIN cache. */
|
|
}
|
|
|
|
|
|
/* Reset the daemons if they have been used. Actually it is not a
|
|
reset but a cleanup of resources used by the current connection. */
|
|
void
|
|
agent_reset_daemon (ctrl_t ctrl)
|
|
{
|
|
int i;
|
|
int rc;
|
|
|
|
rc = npth_mutex_lock (&start_daemon_lock);
|
|
if (rc)
|
|
{
|
|
log_error ("failed to acquire the start_daemon lock: %s\n",
|
|
strerror (rc));
|
|
return;
|
|
}
|
|
|
|
|
|
for (i = 0; i < DAEMON_MAX_TYPE; i++)
|
|
if (ctrl->d_local[i])
|
|
{
|
|
struct daemon_global_s *g = ctrl->d_local[i]->g;
|
|
|
|
if (ctrl->d_local[i]->ctx)
|
|
{
|
|
/* For the primary connection we send a reset and keep
|
|
* that connection open for reuse. */
|
|
if (ctrl->d_local[i]->ctx == g->primary_ctx)
|
|
{
|
|
/* Send a RESTART to the daemon. This is required for the
|
|
primary connection as a kind of virtual EOF; we don't
|
|
have another way to tell it that the next command
|
|
should be viewed as if a new connection has been
|
|
made. For the non-primary connections this is not
|
|
needed as we simply close the socket. We don't check
|
|
for an error here because the RESTART may fail for
|
|
example if the daemon has already been terminated.
|
|
Anyway, we need to set the reusable flag to make sure
|
|
that the aliveness check can clean it up. */
|
|
assuan_transact (g->primary_ctx, "RESTART",
|
|
NULL, NULL, NULL, NULL, NULL, NULL);
|
|
g->primary_ctx_reusable = 1;
|
|
}
|
|
else /* Secondary connections. */
|
|
assuan_release (ctrl->d_local[i]->ctx);
|
|
ctrl->d_local[i]->ctx = NULL;
|
|
}
|
|
|
|
/* Remove the local context from our list and release it. */
|
|
if (!g->local_list)
|
|
BUG ();
|
|
else if (g->local_list == ctrl->d_local[i])
|
|
g->local_list = ctrl->d_local[i]->next_local;
|
|
else
|
|
{
|
|
struct daemon_local_s *sl;
|
|
|
|
for (sl=g->local_list; sl->next_local; sl = sl->next_local)
|
|
if (sl->next_local == ctrl->d_local[i])
|
|
break;
|
|
if (!sl->next_local)
|
|
BUG ();
|
|
sl->next_local = ctrl->d_local[i]->next_local;
|
|
}
|
|
xfree (ctrl->d_local[i]);
|
|
ctrl->d_local[i] = NULL;
|
|
}
|
|
|
|
|
|
rc = npth_mutex_unlock (&start_daemon_lock);
|
|
if (rc)
|
|
log_error ("failed to release the start_daemon lock: %s\n", strerror (rc));
|
|
}
|
|
|
|
|
|
assuan_context_t
|
|
daemon_type_ctx (enum daemon_type type, ctrl_t ctrl)
|
|
{
|
|
return ctrl->d_local[type]->ctx;
|
|
}
|