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/*
Authors:
Pavel Březina <pbrezina@redhat.com>
Stephen Gallagher <sgallagh@redhat.com>
Simo Sorce <ssorce@redhat.com>
Copyright (C) 2017 Red Hat
This program 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.
This program 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 <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <talloc.h>
#include <dbus/dbus.h>
#include "util/util.h"
#include "sbus/connection/sbus_dbus_private.h"
#include "sbus/sbus_errors.h"
#include "sbus/sbus_message.h"
#include "sbus/sbus_sync.h"
struct sbus_sync_connection {
DBusConnection *connection;
bool disconnecting;
};
static int
sbus_sync_connection_destructor(struct sbus_sync_connection *sbus_conn)
{
sbus_conn->disconnecting = true;
dbus_connection_unref(sbus_conn->connection);
return 0;
}
static struct sbus_sync_connection *
sbus_sync_connection_init(TALLOC_CTX *mem_ctx,
DBusConnection *dbus_conn)
{
struct sbus_sync_connection *sbus_conn;
sbus_conn = talloc_zero(mem_ctx, struct sbus_sync_connection);
if (sbus_conn == NULL) {
return NULL;
}
sbus_conn->connection = dbus_connection_ref(dbus_conn);
talloc_set_destructor(sbus_conn, sbus_sync_connection_destructor);
return sbus_conn;
}
struct sbus_sync_connection *
sbus_sync_connect_system(TALLOC_CTX *mem_ctx,
const char *dbus_name)
{
struct sbus_sync_connection *sbus_conn;
DBusConnection *dbus_conn;
dbus_conn = sbus_dbus_connect_bus(DBUS_BUS_SYSTEM, dbus_name);
if (dbus_conn == NULL) {
return NULL;
}
sbus_conn = sbus_sync_connection_init(mem_ctx, dbus_conn);
dbus_connection_unref(dbus_conn);
if (sbus_conn == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, "Unable to create connection context!\n");
return NULL;
}
return sbus_conn;
}
struct sbus_sync_connection *
sbus_sync_connect_private(TALLOC_CTX *mem_ctx,
const char *address,
const char *dbus_name)
{
struct sbus_sync_connection *sbus_conn;
DBusConnection *dbus_conn;
dbus_conn = sbus_dbus_connect_address(address, dbus_name, true);
if (dbus_conn == NULL) {
return NULL;
}
sbus_conn = sbus_sync_connection_init(mem_ctx, dbus_conn);
dbus_connection_unref(dbus_conn);
if (sbus_conn == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, "Unable to create connection context!\n");
return NULL;
}
return sbus_conn;
}
errno_t
sbus_sync_message_send(TALLOC_CTX *mem_ctx,
struct sbus_sync_connection *conn,
DBusMessage *msg,
int timeout_ms,
DBusMessage **_reply)
{
DBusError dbus_error;
DBusMessage *reply;
errno_t ret;
if (msg == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, "Bug: message is empty!\n");
return EINVAL;
}
if (conn->disconnecting) {
DEBUG(SSSDBG_TRACE_FUNC, "Connection is being disconnected\n");
return ERR_TERMINATED;
}
if (_reply == NULL) {
dbus_connection_send(conn->connection, msg, NULL);
dbus_connection_flush(conn->connection);
return EOK;
}
dbus_error_init(&dbus_error);
reply = dbus_connection_send_with_reply_and_block(conn->connection, msg,
timeout_ms, &dbus_error);
if (dbus_error_is_set(&dbus_error)) {
ret = sbus_error_to_errno(&dbus_error);
goto done;
} else if (reply == NULL) {
ret = ERR_SBUS_NO_REPLY;
goto done;
}
ret = sbus_reply_check(reply);
if (ret != EOK) {
goto done;
}
if (mem_ctx != NULL) {
ret = sbus_message_bound(mem_ctx, reply);
if (ret != EOK) {
goto done;
}
}
*_reply = reply;
done:
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Error received [%d]: %s!\n",
ret, sss_strerror(ret));
}
dbus_error_free(&dbus_error);
return ret;
}
void sbus_sync_emit_signal(struct sbus_sync_connection *conn,
DBusMessage *msg)
{
errno_t ret;
ret = sbus_sync_message_send(NULL, conn, msg, SBUS_MESSAGE_TIMEOUT, NULL);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Unable to emit signal [%d]: %s\n",
ret, sss_strerror(ret));
}
}
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