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/*
SSSD
Common utilities for dbus based tests.
Authors:
Stef Walter <stefw@redhat.com>
Copyright (C) Red Hat, Inc 2014
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 "config.h"
#include <stdio.h>
#include "tests/common.h"
struct mock_server {
char *temp_dir;
char *dbus_address;
pid_t pid;
DBusConnection *client;
/* Used for synchronization */
int sync_fds[2];
/* Only used during init */
sbus_server_conn_init_fn init_fn;
void *init_pvt_data;
};
/*
* If you think we're going to do full error propagation during tests ...
* you're going to have a bad time (reading this code)
*/
#define verify_eq(x, y) \
do { if ((x) != (y)) { fprintf(stderr, "failed: %s == %s\n", #x, #y); abort(); } } while (0)
#define verify_neq(x, y) \
do { if ((x) == (y)) { fprintf(stderr, "failed: %s != %s\n", #x, #y); abort(); } } while (0)
static int
mock_server_cleanup(struct mock_server *mock)
{
int child_status;
const char *file;
struct stat sb;
dbus_connection_close(mock->client);
dbus_connection_unref(mock->client);
/* Tell the server thread to quit */
verify_eq (write(mock->sync_fds[0], "X", 1), 1);
/* Wait for the server child, it always returns mock */
verify_eq (waitpid(mock->pid, &child_status, 0), mock->pid);
verify_eq (child_status, 0);
file = strchr(mock->dbus_address, '/');
if (stat(file, &sb) == 0) {
verify_eq (unlink(file), 0);
}
verify_eq (rmdir(mock->temp_dir), 0);
return EOK;
}
static int
on_accept_connection(struct sbus_connection *conn,
void *data)
{
struct mock_server *mock = data;
verify_eq (mock->init_fn(conn, mock->init_pvt_data), EOK);
/* Synchronization point: test_dbus_setup_mock() should return */
verify_eq (write(mock->sync_fds[1], "X", 1), 1);
return EOK;
}
static void
on_sync_fd_written(struct tevent_context *loop,
struct tevent_fd *fde,
uint16_t flags,
void *data)
{
bool *stop_server = data;
*stop_server = true;
}
static void
mock_server_child(void *data)
{
struct mock_server *mock = data;
struct tevent_context *loop;
struct sbus_connection *server;
bool stop_server = false;
TALLOC_CTX *ctx;
ctx = talloc_new(NULL);
loop = tevent_context_init(ctx);
verify_eq (sbus_new_server(ctx, loop, mock->dbus_address, false,
&server, on_accept_connection, mock), EOK);
tevent_add_fd(loop, ctx, mock->sync_fds[1], TEVENT_FD_READ,
on_sync_fd_written, &stop_server);
/* Synchronization point: test_dbus_setup_mock() should connect */
verify_eq (write(mock->sync_fds[1], "X", 1), 1);
/* Do the loop */
while(!stop_server) {
verify_eq (tevent_loop_once(loop), 0);
}
/* TODO: sbus doesn't support cleanup of a server */
talloc_free(ctx);
}
struct DBusConnection *
test_dbus_setup_mock(TALLOC_CTX *mem_ctx,
struct tevent_context *loop,
sbus_server_conn_init_fn init_fn,
void *init_pvt_data)
{
struct mock_server *mock;
char dummy;
mock = talloc_zero(mem_ctx, struct mock_server);
talloc_set_destructor(mock, mock_server_cleanup);
mock->init_fn = init_fn;
mock->init_pvt_data = init_pvt_data;
mock->temp_dir = mkdtemp(talloc_strdup(mock, "/tmp/sssd-dbus-tests.XXXXXX"));
verify_neq (mock->temp_dir, NULL);
mock->dbus_address = talloc_asprintf(mock, "unix:path=%s/sbus", mock->temp_dir);
verify_neq (mock->dbus_address, NULL);
/* We use an fd pair as a synchronization device, integrates with tevent well */
verify_eq (socketpair(PF_LOCAL, SOCK_STREAM, 0, mock->sync_fds), 0);
/* Run the dbus server in a child process */
mock->pid = fork();
if (mock->pid == 0) {
mock_server_child(mock);
_exit(0);
}
verify_neq (mock->pid, -1);
/* Synchronization point: wait for sync point in mock_server_child */
verify_eq (read(mock->sync_fds[0], &dummy, 1), 1);
/* Open a shared D-BUS connection to the address */
mock->client = dbus_connection_open_private(mock->dbus_address, NULL);
verify_neq (mock->client, NULL);
/* Synchronization point: wait for sync point in on_accept_connection */
verify_eq (read(mock->sync_fds[0], &dummy, 1), 1);
return mock->client;
}
DBusMessage *
test_dbus_call_sync(DBusConnection *conn, const char *object_path,
const char *interface, const char *method,
DBusError *error, int first_arg_type, ...)
{
DBusMessage *message;
DBusMessage *reply;
va_list va;
message = dbus_message_new_method_call(NULL, object_path, interface, method);
verify_neq(message, NULL);
va_start(va, first_arg_type);
verify_eq(dbus_message_append_args_valist(message, first_arg_type, va), TRUE);
va_end(va);
reply = dbus_connection_send_with_reply_and_block(conn, message, -1, error);
dbus_message_unref(message);
return reply;
}
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