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/*
SSSD
Service monitor - D-BUS features
Copyright (C) Stephen Gallagher 2008
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 <sys/time.h>
#include "tevent.h"
#include "util/util.h"
#include "dbus/dbus.h"
#include "sbus/sssd_dbus.h"
#include "sbus/sssd_dbus_private.h"
/* Types */
struct sbus_srv_ctx {
DBusServer *dbus_server;
/*
* sd_ctx here describes the object path that will be
* presented to all clients of this server. Additional
* connection-specific paths can be specified by the
* init_fn, which is called every time a new connection
* is established.
* There should only be one global object path (for
* simplicity's sake)
*/
struct tevent_context *ev;
struct sbus_method_ctx *sd_ctx;
sbus_server_conn_init_fn init_fn;
void *init_pvt_data;
};
static int sbus_server_destructor(void *ctx);
/*
* new_connection_callback
* Actions to be run upon each new client connection
* Must either perform dbus_connection_ref() on the
* new connection or else close the connection with
* dbus_connection_close()
*/
static void sbus_server_init_new_connection(DBusServer *dbus_server,
DBusConnection *conn,
void *data)
{
struct sbus_srv_ctx *srv_ctx;
struct sbus_conn_ctx *conn_ctx;
struct sbus_method_ctx *iter;
int ret;
DEBUG(5,("Entering.\n"));
srv_ctx = talloc_get_type(data, struct sbus_srv_ctx);
if (srv_ctx == NULL) {
return;
}
DEBUG(5,("Adding connection %lX.\n", conn));
ret = sbus_add_connection(srv_ctx, srv_ctx->ev, conn,
&conn_ctx, SBUS_CONN_TYPE_PRIVATE);
if (ret != 0) {
dbus_connection_close(conn);
DEBUG(5,("Closing connection (failed setup)"));
return;
}
dbus_connection_ref(conn);
DEBUG(5,("Got a connection\n"));
/* Set up global methods */
iter = srv_ctx->sd_ctx;
while (iter != NULL) {
sbus_conn_add_method_ctx(conn_ctx, iter);
iter = iter->next;
}
/*
* Initialize connection-specific features
* This may set a more detailed destructor, but
* the default destructor will always be chained
* to handle connection cleanup.
* This function (or its callbacks) should also
* set up connection-specific methods.
*/
ret = srv_ctx->init_fn(conn_ctx, srv_ctx->init_pvt_data);
if (ret != EOK) {
DEBUG(1,("Initialization failed!\n"));
}
}
/*
* dbus_new_server
* Set up a D-BUS server, integrate with the event loop
* for handling file descriptor and timed events
*/
int sbus_new_server(TALLOC_CTX *mem_ctx,
struct tevent_context *ev, struct sbus_method_ctx *ctx,
struct sbus_srv_ctx **_srv_ctx, const char *address,
sbus_server_conn_init_fn init_fn, void *init_pvt_data)
{
struct sbus_generic_dbus_ctx *gen_ctx;
struct sbus_srv_ctx *srv_ctx;
DBusServer *dbus_server;
DBusError dbus_error;
dbus_bool_t dbret;
char *tmp;
*_srv_ctx = NULL;
/* Set up D-BUS server */
dbus_error_init(&dbus_error);
dbus_server = dbus_server_listen(address, &dbus_error);
if (!dbus_server) {
DEBUG(1,("dbus_server_listen failed! (name=%s, message=%s)\n",
dbus_error.name, dbus_error.message));
if (dbus_error_is_set(&dbus_error)) dbus_error_free(&dbus_error);
return EIO;
}
tmp = dbus_server_get_address(dbus_server);
DEBUG(3, ("D-BUS Server listening on %s\n", tmp));
free(tmp);
srv_ctx = talloc_zero(mem_ctx, struct sbus_srv_ctx);
if (!srv_ctx) {
return ENOMEM;
}
srv_ctx->ev = ev;
srv_ctx->dbus_server = dbus_server;
srv_ctx->sd_ctx = ctx;
srv_ctx->init_fn = init_fn;
srv_ctx->init_pvt_data = init_pvt_data;
gen_ctx = talloc_zero(srv_ctx, struct sbus_generic_dbus_ctx);
if (!gen_ctx) {
talloc_free(srv_ctx);
return ENOMEM;
}
gen_ctx->ev = ev;
gen_ctx->type = SBUS_SERVER;
gen_ctx->dbus.server = dbus_server;
talloc_set_destructor((TALLOC_CTX *)srv_ctx, sbus_server_destructor);
/* Set up D-BUS new connection handler */
dbus_server_set_new_connection_function(srv_ctx->dbus_server,
sbus_server_init_new_connection,
srv_ctx, NULL);
/* Set up DBusWatch functions */
dbret = dbus_server_set_watch_functions(srv_ctx->dbus_server,
sbus_add_watch,
sbus_remove_watch,
sbus_toggle_watch,
gen_ctx, NULL);
if (!dbret) {
DEBUG(4, ("Error setting up D-BUS server watch functions"));
talloc_free(srv_ctx);
return EIO;
}
/* Set up DBusTimeout functions */
dbret = dbus_server_set_timeout_functions(srv_ctx->dbus_server,
sbus_add_timeout,
sbus_remove_timeout,
sbus_toggle_timeout,
gen_ctx, NULL);
if (!dbret) {
DEBUG(4,("Error setting up D-BUS server timeout functions"));
dbus_server_set_watch_functions(srv_ctx->dbus_server,
NULL, NULL, NULL, NULL, NULL);
talloc_free(srv_ctx);
return EIO;
}
*_srv_ctx = srv_ctx;
return EOK;
}
static int sbus_server_destructor(void *ctx)
{
struct sbus_srv_ctx *srv_ctx = talloc_get_type(ctx, struct sbus_srv_ctx);
dbus_server_disconnect(srv_ctx->dbus_server);
return 0;
}
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