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#include <stdio.h>
#include <string.h>
#include <time.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stddef.h>
#include <unistd.h>
#include <stdint.h>
#include <stdbool.h>
#include <errno.h>
#include <assert.h>
#include <signal.h>
#include <sys/time.h>
#include <sys/mman.h>
#include <sys/capability.h>
#include <sys/wait.h>
#include "kdbus-util.h"
#include "kdbus-enum.h"
#include "kdbus-util.h"
#include "kdbus-enum.h"
#include "kdbus-test.h"
int kdbus_test_monitor(struct kdbus_test_env *env)
{
struct kdbus_conn *monitor, *conn;
unsigned int cookie = 0xdeadbeef;
struct kdbus_msg *msg;
uint64_t offset = 0;
int ret;
conn = kdbus_hello(env->buspath, 0, NULL, 0);
ASSERT_RETURN(conn);
/* add matches to make sure the monitor do not trigger an item add or
* remove on connect and disconnect, respectively.
*/
ret = kdbus_add_match_id(conn, 0x1, KDBUS_ITEM_ID_ADD,
KDBUS_MATCH_ID_ANY);
ASSERT_RETURN(ret == 0);
ret = kdbus_add_match_id(conn, 0x2, KDBUS_ITEM_ID_REMOVE,
KDBUS_MATCH_ID_ANY);
ASSERT_RETURN(ret == 0);
/* register a monitor */
monitor = kdbus_hello(env->buspath, KDBUS_HELLO_MONITOR, NULL, 0);
ASSERT_RETURN(monitor);
/* make sure we did not receive a monitor connect notification */
ret = kdbus_msg_recv(conn, &msg, &offset);
ASSERT_RETURN(ret == -EAGAIN);
/* check that a monitor cannot acquire a name */
ret = kdbus_name_acquire(monitor, "foo.bar.baz", NULL);
ASSERT_RETURN(ret == -EOPNOTSUPP);
ret = kdbus_msg_send(env->conn, NULL, cookie, 0, 0, 0, conn->id);
ASSERT_RETURN(ret == 0);
/* the recipient should have gotten the message */
ret = kdbus_msg_recv(conn, &msg, &offset);
ASSERT_RETURN(ret == 0);
ASSERT_RETURN(msg->cookie == cookie);
kdbus_msg_free(msg);
kdbus_free(conn, offset);
/* and so should the monitor */
ret = kdbus_msg_recv(monitor, &msg, &offset);
ASSERT_RETURN(ret == 0);
ASSERT_RETURN(msg->cookie == cookie);
kdbus_msg_free(msg);
kdbus_free(monitor, offset);
/* Installing matches for monitors must fais must fail */
ret = kdbus_add_match_empty(monitor);
ASSERT_RETURN(ret == -EOPNOTSUPP);
cookie++;
ret = kdbus_msg_send(env->conn, NULL, cookie, 0, 0, 0,
KDBUS_DST_ID_BROADCAST);
ASSERT_RETURN(ret == 0);
/* The monitor should get the message. */
ret = kdbus_msg_recv_poll(monitor, 100, &msg, &offset);
ASSERT_RETURN(ret == 0);
ASSERT_RETURN(msg->cookie == cookie);
kdbus_msg_free(msg);
kdbus_free(monitor, offset);
/*
* Since we are the only monitor, update the attach flags
* and tell we are not interessted in attach flags recv
*/
ret = kdbus_conn_update_attach_flags(monitor,
_KDBUS_ATTACH_ALL,
0);
ASSERT_RETURN(ret == 0);
cookie++;
ret = kdbus_msg_send(env->conn, NULL, cookie, 0, 0, 0,
KDBUS_DST_ID_BROADCAST);
ASSERT_RETURN(ret == 0);
ret = kdbus_msg_recv_poll(monitor, 100, &msg, &offset);
ASSERT_RETURN(ret == 0);
ASSERT_RETURN(msg->cookie == cookie);
ret = kdbus_item_in_message(msg, KDBUS_ITEM_TIMESTAMP);
ASSERT_RETURN(ret == 0);
kdbus_msg_free(msg);
kdbus_free(monitor, offset);
/*
* Now we are interested in KDBUS_ITEM_TIMESTAMP and
* KDBUS_ITEM_CREDS
*/
ret = kdbus_conn_update_attach_flags(monitor,
_KDBUS_ATTACH_ALL,
KDBUS_ATTACH_TIMESTAMP |
KDBUS_ATTACH_CREDS);
ASSERT_RETURN(ret == 0);
cookie++;
ret = kdbus_msg_send(env->conn, NULL, cookie, 0, 0, 0,
KDBUS_DST_ID_BROADCAST);
ASSERT_RETURN(ret == 0);
ret = kdbus_msg_recv_poll(monitor, 100, &msg, &offset);
ASSERT_RETURN(ret == 0);
ASSERT_RETURN(msg->cookie == cookie);
ret = kdbus_item_in_message(msg, KDBUS_ITEM_TIMESTAMP);
ASSERT_RETURN(ret == 1);
ret = kdbus_item_in_message(msg, KDBUS_ITEM_CREDS);
ASSERT_RETURN(ret == 1);
/* the KDBUS_ITEM_PID_COMM was not requested */
ret = kdbus_item_in_message(msg, KDBUS_ITEM_PID_COMM);
ASSERT_RETURN(ret == 0);
kdbus_msg_free(msg);
kdbus_free(monitor, offset);
kdbus_conn_free(monitor);
/* make sure we did not receive a monitor disconnect notification */
ret = kdbus_msg_recv(conn, &msg, &offset);
ASSERT_RETURN(ret == -EAGAIN);
kdbus_conn_free(conn);
/* Make sure that monitor as unprivileged is not allowed */
ret = test_is_capable(CAP_SETUID, CAP_SETGID, -1);
ASSERT_RETURN(ret >= 0);
if (ret && all_uids_gids_are_mapped()) {
ret = RUN_UNPRIVILEGED(UNPRIV_UID, UNPRIV_UID, ({
monitor = kdbus_hello(env->buspath,
KDBUS_HELLO_MONITOR,
NULL, 0);
ASSERT_EXIT(!monitor && errno == EPERM);
_exit(EXIT_SUCCESS);
}),
({ 0; }));
ASSERT_RETURN(ret == 0);
}
return TEST_OK;
}
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