static bool
_changed(pxNetworkModule *s)
{
pxNetworkManagerNetworkModule *self = (pxNetworkManagerNetworkModule *) s;
// Make sure we have a valid connection with a proper match
DBusConnection *conn = self->conn;
if (!conn || !dbus_connection_get_is_connected(conn))
{
// If the connection was disconnected,
// close it an clear the queue
if (conn)
{
dbus_connection_close(conn);
dbus_connection_read_write(conn, 0);
for (DBusMessage *msg=NULL ; (msg = dbus_connection_pop_message(conn)) ; dbus_message_unref(msg));
}
// Create a new connections
conn = dbus_bus_get_private(DBUS_BUS_SYSTEM, NULL);
self->conn = conn;
if (!conn) return false;
// If connection was successful, set it up
dbus_connection_set_exit_on_disconnect(conn, false);
dbus_bus_add_match(conn, "type='signal',interface='" NM_DBUS_INTERFACE "',member='StateChange'", NULL);
dbus_connection_flush(conn);
}
// We are guaranteed a connection,
// so check for incoming messages
bool changed = false;
while (true)
{
DBusMessage *msg = NULL;
uint32_t state;
// Pull messages off the queue
dbus_connection_read_write(conn, 0);
if (!(msg = dbus_connection_pop_message(conn)))
break;
// If a message is the right type and value,
// we'll reset the network
if (dbus_message_get_args(msg, NULL, DBUS_TYPE_UINT32, &state, DBUS_TYPE_INVALID))
if (state == NM_STATE_CONNECTED)
changed = true;
dbus_message_unref(msg);
}
return changed;
}
static int
dbus_read(pcap_t *handle, int max_packets, pcap_handler callback, u_char *user)
{
struct pcap_dbus *handlep = handle->priv;
struct pcap_pkthdr pkth;
DBusMessage *message;
char *raw_msg;
int raw_msg_len;
int count = 0;
message = dbus_connection_pop_message(handlep->conn);
while (!message) {
/* XXX handle->opt.timeout = timeout_ms; */
if (!dbus_connection_read_write(handlep->conn, 100)) {
pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Connection closed");
return -1;
}
if (handle->break_loop) {
handle->break_loop = 0;
return -2;
}
message = dbus_connection_pop_message(handlep->conn);
}
if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Disconnected");
return -1;
}
if (dbus_message_marshal(message, &raw_msg, &raw_msg_len)) {
pkth.caplen = pkth.len = raw_msg_len;
/* pkth.caplen = min (payload_len, handle->snapshot); */
gettimeofday(&pkth.ts, NULL);
if (handle->fcode.bf_insns == NULL ||
bpf_filter(handle->fcode.bf_insns, (u_char *)raw_msg, pkth.len, pkth.caplen)) {
handlep->packets_read++;
callback(user, &pkth, (u_char *)raw_msg);
count++;
}
dbus_free(raw_msg);
}
return count;
}
/* This constructor sets up a private connection to the DBus daemon, connects
* to the hal service and installs a filter which sets the mTriggered flag in
* the Context structure when a device (not necessarily USB) is added or
* removed. */
VBoxMainHotplugWaiter::VBoxMainHotplugWaiter ()
{
#if defined RT_OS_LINUX && defined VBOX_WITH_DBUS
int rc = VINF_SUCCESS;
mContext = new Context;
if (RT_SUCCESS(RTDBusLoadLib()))
{
for (unsigned i = 0; RT_SUCCESS(rc) && i < 5 && !mContext->mConnection; ++i)
{
rc = halInitPrivate (&mContext->mConnection);
}
if (!mContext->mConnection)
rc = VERR_NOT_SUPPORTED;
DBusMessage *pMessage;
while ( RT_SUCCESS(rc)
&& (pMessage = dbus_connection_pop_message (mContext->mConnection.get())) != NULL)
dbus_message_unref (pMessage); /* empty the message queue. */
if ( RT_SUCCESS(rc)
&& !dbus_connection_add_filter (mContext->mConnection.get(),
dbusFilterFunction,
(void *) &mContext->mTriggered, NULL))
rc = VERR_NO_MEMORY;
if (RT_FAILURE(rc))
mContext->mConnection.reset();
}
#endif /* defined RT_OS_LINUX && defined VBOX_WITH_DBUS */
}
bool CConsoleUPowerSyscall::PumpPowerEvents(IPowerEventsCallback *callback)
{
bool result = false;
if (m_connection)
{
dbus_connection_read_write(m_connection, 0);
DBusMessage *msg = dbus_connection_pop_message(m_connection);
if (msg)
{
result = true;
if (dbus_message_is_signal(msg, "org.freedesktop.UPower", "Sleeping"))
callback->OnSleep();
else if (dbus_message_is_signal(msg, "org.freedesktop.UPower", "Resuming"))
callback->OnWake();
else if (dbus_message_is_signal(msg, "org.freedesktop.UPower", "Changed"))
{
bool lowBattery = m_lowBattery;
UpdateUPower();
if (m_lowBattery && !lowBattery)
callback->OnLowBattery();
}
else
CLog::Log(LOGDEBUG, "UPower: Recieved an unknown signal %s", dbus_message_get_member(msg));
dbus_message_unref(msg);
}
}
return result;
}
bool CUDisks2Provider::PumpDriveChangeEvents(IStorageEventsCallback *callback)
{
if (m_connection)
{
dbus_connection_read_write(m_connection, 0);
DBusMessagePtr msg(dbus_connection_pop_message(m_connection));
if (msg)
{
CLog::Log(LOGDEBUG, LOGDBUS, "UDisks2: Message received (interface: %s, member: %s)",
dbus_message_get_interface(msg.get()), dbus_message_get_member(msg.get()));
if (dbus_message_is_signal(msg.get(), DBUS_INTERFACE_OBJECT_MANAGER, "InterfacesAdded"))
{
HandleInterfacesAdded(msg.get());
return false;
}
else if (dbus_message_is_signal(msg.get(), DBUS_INTERFACE_OBJECT_MANAGER, "InterfacesRemoved"))
{
return HandleInterfacesRemoved(msg.get(), callback);
}
else if (dbus_message_is_signal(msg.get(), DBUS_INTERFACE_PROPERTIES, "PropertiesChanged"))
{
return HandlePropertiesChanged(msg.get(), callback);
}
}
}
return false;
}
static void check_bus() {
DBusMessage* msg;
DBusMessageIter args;
char *player, *oldowner, *newowner;
while(1) {
dbus_connection_read_write(dbus.session.connection, 0);
if(!(msg=dbus_connection_pop_message(dbus.session.connection)))
break;
if(dbus_message_is_signal(msg, dbus.interface, "NameOwnerChanged")) {
if(!(dbus_message_iter_init(msg, &args)&&dbus_message_iter_get_arg_type(&args)==DBUS_TYPE_STRING))
continue;
dbus_message_iter_get_basic(&args, &player);
dbus_message_iter_next(&args);
dbus_message_iter_get_basic(&args, &oldowner);
dbus_message_iter_next(&args);
dbus_message_iter_get_basic(&args, &newowner);
if(!strncmp(player, mpris.base, strlen(mpris.base))) {
if(!strlen(oldowner)&&strlen(newowner))
mediaplayer_register(player+strlen(mpris.base));
if(!strlen(newowner))
mediaplayer_deregister(player+strlen(mpris.base));
}
}
dbus_message_unref(msg);
}
}
/**
* Server that exposes a method call and waits for it to be called
*/
void listen()
{
DBusMessage* msg;
DBusMessage* reply;
DBusMessageIter args;
DBusConnection* conn;
DBusError err;
int ret;
char* param;
printf("Listening for method calls\n");
// initialise the error
dbus_error_init(&err);
// connect to the bus and check for errors
conn = dbus_bus_get(DBUS_BUS_SYSTEM, &err);
if (dbus_error_is_set(&err)) {
fprintf(stderr, "Connection Error (%s)\n", err.message);
dbus_error_free(&err);
}
if (NULL == conn) {
fprintf(stderr, "Connection Null\n");
exit(1);
}
// request our name on the bus and check for errors
ret = dbus_bus_request_name(conn, "task.method.server", DBUS_NAME_FLAG_REPLACE_EXISTING , &err);
if (dbus_error_is_set(&err)) {
fprintf(stderr, "Name Error (%s)\n", err.message);
dbus_error_free(&err);
}
if (DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER != ret) {
fprintf(stderr, "Not Primary Owner (%d)\n", ret);
exit(1);
}
// loop, testing for new messages
while (true) {
// non blocking read of the next available message
dbus_connection_read_write(conn, 0);
msg = dbus_connection_pop_message(conn);
// loop again if we haven't got a message
if (NULL == msg) {
sleep(1);
continue;
}
printf("hmm\n");
// check this is a method call for the right interface & method
if (dbus_message_is_method_call(msg, "task.method.Type", "Method"))
reply_to_method_call(msg, conn);
// free the message
dbus_message_unref(msg);
}
// close the connection
dbus_connection_close(conn);
}
void listen_signal()
{
DBusMessage * msg;
DBusMessageIter arg;
DBusConnection * connection;
DBusError err;
int ret;
char * sigvalue;
//步骤1:建立与D-Bus后台的连接
dbus_error_init(&err);
connection = dbus_bus_get(DBUS_BUS_SESSION, &err);
if(dbus_error_is_set(&err)){
fprintf(stderr,"Connection Error %s/n",err.message);
dbus_error_free(&err);
}
if(connection == NULL)
return;
//步骤2:给连接名分配一个可记忆名字test.singal.dest作为Bus name，这个步骤不是必须的,但推荐这样处理
ret = dbus_bus_request_name(connection,"test.singal.dest",DBUS_NAME_FLAG_REPLACE_EXISTING,&err);
if(dbus_error_is_set(&err)){
fprintf(stderr,"Name Error %s/n",err.message);
dbus_error_free(&err);
}
if(ret != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER)
return;
//步骤3:通知D-Bus daemon，希望监听来行接口test.signal.Type的信号
dbus_bus_add_match(connection,"type='signal',interface='test.signal.Type'",&err);
//实际需要发送东西给daemon来通知希望监听的内容，所以需要flush
dbus_connection_flush(connection);
if(dbus_error_is_set(&err)){
fprintf(stderr,"Match Error %s/n",err.message);
dbus_error_free(&err);
}
//步骤4:在循环中监听，每隔开1秒，就去试图自己的连接中获取这个信号。这里给出的是中连接中获取任何消息的方式，所以获取后去检查一下这个消息是否我们期望的信号，并获取内容。我们也可以通过这个方式来获取method call消息。
while(1){
dbus_connection_read_write(connection,0);
msg = dbus_connection_pop_message (connection);
if(msg == NULL)
{ printf("Sleeping\n");
sleep(10);
continue;
}
printf("received something\n");
if(dbus_message_is_signal(msg,"test.signal.Type","Test") ){
if(!dbus_message_iter_init(msg,&arg) )
fprintf(stderr,"Message Has no Param");
else if(dbus_message_iter_get_arg_type(&arg) != DBUS_TYPE_STRING)
fprintf(stderr,"Param is not string");
else
dbus_message_iter_get_basic(&arg,&sigvalue);
printf("Got Singal with value : %s\n\n",sigvalue);
}
dbus_message_unref(msg);
}//End of while
}
bool CDeviceKitDisksProvider::PumpDriveChangeEvents(IStorageEventsCallback *callback)
{
bool result = false;
if (m_connection)
{
dbus_connection_read_write(m_connection, 0);
DBusMessage *msg = dbus_connection_pop_message(m_connection);
if (msg)
{
char *object;
if (dbus_message_get_args (msg, NULL, DBUS_TYPE_OBJECT_PATH, &object, DBUS_TYPE_INVALID))
{
result = true;
if (dbus_message_is_signal(msg, "org.freedesktop.DeviceKit.Disks", "DeviceAdded"))
DeviceAdded(object, callback);
else if (dbus_message_is_signal(msg, "org.freedesktop.DeviceKit.Disks", "DeviceRemoved"))
DeviceRemoved(object, callback);
else if (dbus_message_is_signal(msg, "org.freedesktop.DeviceKit.Disks", "DeviceChanged"))
DeviceChanged(object, callback);
}
dbus_message_unref(msg);
}
}
return result;
}
void
cdbus_loop(session_t *ps) {
dbus_connection_read_write(ps->dbus_conn, 0);
DBusMessage *msg = NULL;
while ((msg = dbus_connection_pop_message(ps->dbus_conn)))
cdbus_process(ps, msg);
}
void listen_signal()
{
DBusMessage* msg;
DBusMessageIter arg;
DBusConnection* connection;
DBusError err;
int ret;
char* sigvalue;
dbus_error_init(&err);
connection = dbus_bus_get(DBUS_BUS_SESSION, &err);
if(dbus_error_is_set(&err)) {
fprintf(stderr, "ConnectionError %s\n", err.message);
dbus_error_free(&err);
}
if(connection == NULL) {
return;
}
ret = dbus_bus_request_name(connection, "test.singal.dest", DBUS_NAME_FLAG_REPLACE_EXISTING, &err);
if(dbus_error_is_set(&err)) {
fprintf(stderr, "Name Error: %s\n", err.message);
dbus_error_free(&err);
}
if(ret != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER) {
return;
}
dbus_bus_add_match(connection, "type='signal',interface='test.signal.Type'", &err);
dbus_connection_flush(connection);
if(dbus_error_is_set(&err)) {
fprintf(stderr, "Match Error: %s\n", err.message);
dbus_error_free(&err);
}
while(1) {
dbus_connection_read_write(connection, 0);
msg = dbus_connection_pop_message(connection);
if(msg == NULL) {
sleep(1);
continue;
}
if(dbus_message_is_signal(msg, "test.signal.Type", "Test")) {
if (!dbus_message_iter_init(msg, &arg)) {
fprintf(stderr, "Message has no params");
} else if (dbus_message_iter_get_arg_type(&arg) != DBUS_TYPE_STRING) {
printf("Param is not string");
} else {
dbus_message_iter_get_basic(&arg, &sigvalue);
printf("Got Singal with value: %s\n", sigvalue);
}
dbus_message_unref(msg);
}
}
}
/**
* Returns -1 upon error, 0 when there are no more messages
*/
static int handle_messages(void)
{
DBusMessage *message;
if (!dbus_connection_read_write(connection, 250)) {
fprintf(stderr, "FAIL: Connecion is closed\n");
return -1;
}
for (;;) {
message = dbus_connection_pop_message(connection);
if (message == NULL)
return 0;
log_message(log_fd, "received ", message);
if (dbus_message_is_signal(message, interface, "Signal")) {
dbus_message_unref(message);
continue;
} else
if (dbus_message_is_method_call
(message, interface, "Method")) {
DBusMessage *reply;
reply = dbus_message_new_method_return(message);
dbus_message_unref(message);
log_message(log_fd, "sent ", reply);
dbus_connection_send(connection, reply, NULL);
dbus_connection_flush(connection);
dbus_message_unref(reply);
continue;
} else if (dbus_message_get_type(message) ==
DBUS_MESSAGE_TYPE_METHOD_CALL) {
DBusMessage *reply;
reply =
dbus_message_new_error(message,
DBUS_ERROR_UNKNOWN_METHOD,
NULL);
dbus_message_unref(message);
log_message(log_fd, "sent ", reply);
dbus_connection_send(connection, reply, NULL);
dbus_connection_flush(connection);
dbus_message_unref(reply);
continue;
} else {
dbus_message_unref(message);
continue;
}
}
return 0;
}
static dbus_bool_t
match_acquired_or_lost_signal (DBusConnection *conn, const char *member, const char *name)
{
int tries;
DBusMessage *msg;
const char *interface = "org.freedesktop.DBus";
for (tries = 0; tries < NUM_TRIES_TIL_FAIL; tries++)
{
_dbus_connection_lock (conn);
_dbus_connection_do_iteration_unlocked (conn,
DBUS_ITERATION_DO_READING |
DBUS_ITERATION_DO_WRITING |
DBUS_ITERATION_BLOCK,
0);
_dbus_connection_unlock (conn);
msg = dbus_connection_pop_message (conn);
if (msg != NULL)
{
if (dbus_message_is_signal (msg,
interface,
member))
{
const char *n;
DBusError error;
dbus_error_init (&error);
dbus_message_get_args (msg, &error, DBUS_TYPE_STRING, &n, DBUS_TYPE_INVALID);
if (dbus_error_is_set (&error))
{
fprintf (stderr, "Error getting args: %s\n", error.message);
dbus_error_free (&error);
dbus_message_unref (msg);
return FALSE;
}
if (strcmp (n, name) == 0)
{
dbus_message_unref (msg);
break;
}
}
dbus_message_unref (msg);
}
}
if (tries == NUM_TRIES_TIL_FAIL)
{
fprintf (stderr, "Did not recive the expected %s.%s signal!!!\n", interface, member);
return FALSE;
}
return TRUE;
}
static int ldbus_connection_pop_message(lua_State *L) {
DBusConnection *connection = check_DBusConnection(L, 1);
DBusMessage *message = dbus_connection_pop_message(connection);
if (message == NULL) {
lua_pushnil(L);
} else {
push_DBusMessage(L, message);
}
return 1;
}
bool CLogindUPowerSyscall::PumpPowerEvents(IPowerEventsCallback *callback)
{
bool result = false;
bool releaseLock = false;
if (m_connection)
{
dbus_connection_read_write(m_connection, 0);
DBusMessage *msg = dbus_connection_pop_message(m_connection);
if (msg)
{
if (dbus_message_is_signal(msg, "org.freedesktop.login1.Manager", "PrepareForSleep"))
{
dbus_bool_t arg;
// the boolean argument defines whether we are going to sleep (true) or just woke up (false)
dbus_message_get_args(msg, NULL, DBUS_TYPE_BOOLEAN, &arg, DBUS_TYPE_INVALID);
CLog::Log(LOGDEBUG, "LogindUPowerSyscall: Received PrepareForSleep with arg %i", (int)arg);
if (arg)
{
callback->OnSleep();
releaseLock = true;
}
else
{
callback->OnWake();
InhibitDelayLock();
}
result = true;
}
else if (dbus_message_is_signal(msg, "org.freedesktop.UPower", "DeviceChanged"))
{
bool lowBattery = m_lowBattery;
UpdateBatteryLevel();
if (m_lowBattery && !lowBattery)
callback->OnLowBattery();
result = true;
}
else
CLog::Log(LOGDEBUG, "LogindUPowerSyscall - Received unknown signal %s", dbus_message_get_member(msg));
dbus_message_unref(msg);
}
}
if (releaseLock)
ReleaseDelayLock();
return result;
}
void dbus_poll(int timeout)
{
DBusMessage *dbus_msg;
dbus_connection_read_write(dbus_conn, timeout);
dbus_msg = dbus_connection_pop_message(dbus_conn);
while (dbus_msg) {
if (dbus_message_is_method_call
(dbus_msg, "org.freedesktop.DBus.Introspectable", "Introspect")) {
dbus_introspect(dbus_msg);
}
if (dbus_message_is_method_call(dbus_msg,
"org.freedesktop.Notifications",
"Notify")) {
notify(dbus_msg);
}
if (dbus_message_is_method_call(dbus_msg,
"org.freedesktop.Notifications",
"GetCapabilities")) {
getCapabilities(dbus_msg);
}
if (dbus_message_is_method_call(dbus_msg,
"org.freedesktop.Notifications",
"GetServerInformation")) {
getServerInformation(dbus_msg);
}
if (dbus_message_is_method_call(dbus_msg,
"org.freedesktop.Notifications",
"CloseNotification")) {
closeNotification(dbus_msg);
}
dbus_message_unref(dbus_msg);
dbus_msg = dbus_connection_pop_message(dbus_conn);
}
}
int main()
{
DBusError err;
DBusConnection* conn;
DBusMessage* msg;
int ret;
// initialise the errors
dbus_error_init( &err );
// connect to the bus
conn = dbus_bus_get( DBUS_BUS_SESSION, &err );
if ( dbus_error_is_set( &err ) ) {
fprintf( stderr, "Connection Error (%s)\n", err.message );
dbus_error_free( &err );
}
if ( NULL == conn ) {
_exit( 1 );
}
// request a name on the bus
ret = dbus_bus_request_name(conn, "dbuscxx.example.calculator.server",
DBUS_NAME_FLAG_REPLACE_EXISTING
, &err);
if (dbus_error_is_set(&err)) {
fprintf(stderr, "Name Error (%s)\n", err.message);
dbus_error_free(&err);
}
if (DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER != ret) {
_exit(1);
}
// loop, testing for new messages
while ( true ) {
// non blocking read of the next available message
dbus_connection_read_write( conn, 0 );
msg = dbus_connection_pop_message( conn );
// loop again if we haven't got a message
if ( NULL == msg ) {
sleep( 1 );
continue;
}
if ( dbus_message_has_interface(msg, "Calculator.Basic") )
reply_to_method_call( msg, conn );
// free the message
dbus_message_unref( msg );
}
}
void onDbusMessage(DBusConnection *conn)
{
if ( !m_bus )
return;
DBusMessage* msg;
DBusMessageIter args;
DBusError err;
int ret;
char* sigvalue;
// non blocking read of the next available message
dbus_connection_read_write_dispatch(conn, 0);
msg = dbus_connection_pop_message(conn);
// loop again if we haven't read a message
if (NULL == msg)
{
return;
}
//check if the message is a signal from the correct interface and with the correct name
if (dbus_message_is_signal (msg, "com.burtonini.dbus.Signal", "Ping"))
{
//read the parameters
if (!dbus_message_iter_init(msg, &args))
CRLog::error("dbus: Message Has No Parameters\n");
else if (DBUS_TYPE_STRING != dbus_message_iter_get_arg_type(&args))
CRLog::error("dbus: Argument is not string!\n");
else
{
dbus_message_iter_get_basic(&args, &sigvalue);
CRLog::info("dbus: Got Signal with value %s\n", sigvalue);
}
}
else if (dbus_message_is_signal (msg, "com.burtonini.dbus.Signal", "Exit"))
{
//read the parameters
if (!dbus_message_iter_init(msg, &args))
CRLog::error("dbus: Message Has No Parameters\n");
else if (DBUS_TYPE_STRING != dbus_message_iter_get_arg_type(&args))
CRLog::error("dbus: Argument is not string!\n");
else
{
dbus_message_iter_get_basic(&args, &sigvalue);
CRLog::info("dbus: Got Signal with value %s\n", sigvalue);
}
}
//free the message
dbus_message_unref(msg);
}
void serve(char *method_name)
{
DBusMessage* msg;
DBusConnection* conn;
DBusError err;
int ret;
if (!method_name) return;
log("Listening for method calls [%s]", method_name);
dbus_error_init(&err);
conn = dbus_bus_get(DBUS_BUS_SYSTEM, &err);
if (dbus_error_is_set(&err)) {
log("Connection Error (%s)", err.message);
dbus_error_free(&err);
}
if (NULL == conn) {
log_err("Connection Null");
exit(1);
}
ret = dbus_bus_request_name(conn, SERVER, DBUS_NAME_FLAG_REPLACE_EXISTING , &err);
if (dbus_error_is_set(&err)) {
log_err("Name Error (%s)", err.message);
dbus_error_free(&err);
}
if (DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER != ret) {
log_err("Not Primary Owner (%d)", ret);
exit(1);
}
while (true) {
dbus_connection_read_write(conn, 0);
msg = dbus_connection_pop_message(conn);
if (NULL == msg) {
sleep(1);
continue;
}
log_dbg("Received\n");
if (dbus_message_is_method_call(msg, INTERFCE, method_name))
reply_to_method_call(msg, conn);
dbus_message_unref(msg);
}
}
int main(int argc, char **argv) {
DBusMessage *msg;
DBusConnection *conn;
DBusError err;
#ifndef DEBUG
setenv("DBUS_SESSION_BUS_ADDRESS", "unix:path=/var/run/dbus/system_bus_socket", 1);
#endif
dbus_error_init(&err);
conn = dbus_bus_get(DBUS_BUS_SESSION, &err);
if (dbus_error_is_set(&err)) {
fprintf(stderr, ERR_CONN, err.message);
dbus_error_free(&err);
}
if (conn == NULL) { exit(1); }
int ret = dbus_bus_request_name(conn, DBUS_NAMESPACE, DBUS_NAME_FLAG_REPLACE_EXISTING, &err);
if (dbus_error_is_set(&err)) {
fprintf(stderr, "%s\n", err.message);
dbus_error_free(&err);
}
if (DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER != ret) {
fprintf(stderr, ERR_OWNER, ret);
exit(1);
}
while (true) {
dbus_connection_read_write(conn, 0);
msg = dbus_connection_pop_message(conn);
if (msg == NULL) {
sleep(1);
continue;
}
introspect(msg, conn);
reply(msg, conn);
dbus_message_unref(msg);
}
return 0;
}
/**
* This function runs in a separate thread.
*
* It is started in initSignalWatcher()
*
* @param user_data (Ignored)
*/
static void* signalWatch(void* user_data) {
Signals* signals = user_data;
DBusMessage* m;
pthread_mutex_lock(signals->startLock);
pthread_mutex_unlock(signals->startLock);
while(signals->work)
{
pthread_mutex_lock(&signals->dbus_mutex);
dbus_connection_read_write(signals->con, 100);
m = dbus_connection_pop_message(signals->con);
pthread_mutex_unlock(&signals->dbus_mutex);
if(m != NULL)
{
char* str = PrintDBusMessage(m);
if(dbus_message_get_type(m) == DBUS_MESSAGE_TYPE_SIGNAL)
{
char* marshalled;
int size;
dbus_message_marshal(m, &marshalled, &size);
writeAllPort(signals->service, marshalled, size);
free(marshalled);
}
dbus_message_unref(m);
}
else
{
/*
* pthread's mutexes are not fair (it does not prevent starvation),
* the signalWatch() thread might hog the mutex all for itself.
*
* Other threads might require the dbus connection (and the mutex)
* for adding/removing watches. One way to minimize this starvation
* is to yield control to another thread when the signalWatch()
* thread released the mutex.
*
* This is a sub-optimal solution. The best solution would be a fair mutex.
*/
sched_yield();
}
}
fprintf(stderr, "signalWatch thread stopped\n");
return NULL;
}
int main()
{
DBusError error;
DBusConnection *connection;
int ret;
dbus_bool_t flag;
dbus_error_init(&error);
connection=dbus_bus_get(DBUS_BUS_SESSION,&error);
if (dbus_error_is_set(&error))
{
printf("error\n");
exit(1);
}
flag=dbus_bus_register(connection,&error);
ret=dbus_bus_request_name(connection,"org.jinhui.dbus",DBUS_NAME_FLAG_ALLOW_REPLACEMENT,&error);
printf("request name successfully\n");
if (dbus_error_is_set(&error))
{
printf("error\n");
exit(1);
}
dbus_bus_add_match(connection, "type='signal',interface='org.jinhui.iface'",&error);
dbus_connection_flush(connection);
DBusMessage *msg;
while ( 1 )
{
flag=dbus_connection_read_write(connection,1);
msg=dbus_connection_pop_message(connection);
if (!flag)
{
printf("Invalid message\n");
continue;
}
//printf("Message received\n");
if (msg!=NULL && dbus_message_is_method_call(msg,"org.jinhui.iface","hello"))
{
printf("send to hello method\n");
reply_to_hello_method(connection,msg);
}
}
dbus_connection_unref(connection);
}
int main(int argc, char** argv) {
DBusConnection* conn;
DBusMessage* msg;
DBusMessage* reply;
DBusMessageIter args;
DBusError err;
dbus_uint32_t serial = 0;
int ret;
const char * lib_file;
const char * init_fn;
repl_result repl_result;
dbus_error_init(&err);
repl_init();
conn = dbus_bus_get(DBUS_BUS_SESSION, &err);
CHECK_FOR_ERRORS("Connection error: %s\n");
ASSERT(conn != NULL);
ret = dbus_bus_request_name(conn, "cljc.repl.runtime", DBUS_NAME_FLAG_REPLACE_EXISTING , &err);
CHECK_FOR_ERRORS("Name error: %s\n");
ASSERT(ret == DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER);
while (true) {
dbus_connection_read_write(conn, 0);
msg = dbus_connection_pop_message(conn);
if (msg == NULL) {
usleep(10000);
continue; }
if (dbus_message_is_method_call(msg, "cljc.repl.runtime", "eval")) {
ASSERT(dbus_message_iter_init(msg, &args));
ASSERT(dbus_message_iter_get_arg_type(&args) == DBUS_TYPE_STRING);
dbus_message_iter_get_basic(&args, &lib_file);
ASSERT(dbus_message_iter_next(&args));
ASSERT(dbus_message_iter_get_arg_type(&args) == DBUS_TYPE_STRING);
dbus_message_iter_get_basic(&args, &init_fn);
repl_result = repl_eval(lib_file, init_fn);
fflush(stdout);
reply = dbus_message_new_method_return(msg);
dbus_message_iter_init_append(reply, &args);
ASSERT(dbus_message_iter_append_basic(&args, DBUS_TYPE_UINT32, &repl_result.status));
ASSERT(dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING, &repl_result.buffer));
ASSERT(dbus_connection_send(conn, reply, &serial));
dbus_connection_flush(conn);
dbus_message_unref(reply); }
dbus_message_unref(msg);
}
}
void listen(DBusConnection* conn)
{
DBusMessage* msg;
//DBusMessage* reply;
while (1) {
dbus_connection_read_write(conn, 0);
msg = dbus_connection_pop_message(conn);
if (msg == NULL) {
sleep(1);
continue;
}
if (dbus_message_is_method_call(msg, TEST_METHOD_TYPE, TEST_METHOD))
reply_method_call(msg, conn);
dbus_message_unref(msg);
}
}
/**
* Server that exposes a method call and waits for it to be called
*/
void listen_to_clients()
{
DBusMessage* msg;
DBusMessage* reply;
DBusMessageIter args;
int ret;
char* param;
printf("Listening for method calls & signals\n");
// loop, testing for new messages
while (1) {
// non blocking read of the next available message
dbus_connection_read_write(conn, 0);
msg = dbus_connection_pop_message(conn);
// loop again if we haven't got a message
if (NULL == msg) {
sleep(1);
continue;
}
// check this is a method call for the right interface & method
if (dbus_message_is_method_call(msg, SERVER_METHOD_INTERFACE, METHOD1))
handle_methods(msg);
if (dbus_message_is_signal(msg, SERVER_SIGNAL_INTERFACE, SIGNAL1) ||
dbus_message_is_signal(msg, SERVER_SIGNAL_INTERFACE, SIGNAL2) ||
dbus_message_is_signal(msg, SERVER_SIGNAL_INTERFACE, SIGNAL3) ||
dbus_message_is_signal(msg, SERVER_SIGNAL_INTERFACE, SIGNAL4))
handle_signals(msg);
// free the message
dbus_message_unref(msg);
}
}
void
dbus_poll(void) {
DBusMessage *dbus_msg;
/* make timeout smaller if we are displaying a message
* to improve responsivness for mouse clicks
*/
if(msgqueue == NULL) {
dbus_connection_read_write(dbus_conn, DBUS_POLL_TIMEOUT);
} else {
dbus_connection_read_write(dbus_conn, 100);
}
dbus_msg = dbus_connection_pop_message(dbus_conn);
/* we don't have a new message */
if(dbus_msg == NULL) {
return;
}
if(dbus_message_is_method_call(dbus_msg,
"org.freedesktop.Notifications","Notify")) {
notify(dbus_msg);
}
if(dbus_message_is_method_call(dbus_msg,
"org.freedesktop.Notifications", "GetCapabilities")) {
getCapabilities(dbus_msg);
}
if(dbus_message_is_method_call(dbus_msg,
"org.freedesktop.Notifications", "GetServerInformation")) {
getServerInformation(dbus_msg);
}
if(dbus_message_is_method_call(dbus_msg,
"org.freedesktop.Notifications", "CloseNotification")) {
closeNotification(dbus_msg);
}
dbus_message_unref(dbus_msg);
}
OMXControlResult OMXControl::getEvent()
{
if (!bus)
return KeyConfig::ACTION_BLANK;
dispatch();
DBusMessage *m = dbus_connection_pop_message(bus);
if (m == NULL)
return KeyConfig::ACTION_BLANK;
CLog::Log(LOGDEBUG, "Popped message member: %s interface: %s type: %d path: %s", dbus_message_get_member(m), dbus_message_get_interface(m), dbus_message_get_type(m), dbus_message_get_path(m) );
if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_ROOT, "Quit"))
{
dbus_respond_ok(m);
return KeyConfig::ACTION_EXIT;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "CanQuit")
|| dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "Fullscreen"))
{
dbus_respond_boolean(m, 1);
return KeyConfig::ACTION_BLANK;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "CanSetFullscreen")
|| dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "CanRaise")
|| dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "HasTrackList"))
{
dbus_respond_boolean(m, 0);
return KeyConfig::ACTION_BLANK;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "Identity"))
{
dbus_respond_string(m, "OMXPlayer");
return KeyConfig::ACTION_BLANK;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "SupportedUriSchemes"))
{
const char *UriSchemes[] = {"file", "http"};
dbus_respond_array(m, UriSchemes, 2); // Array is of length 2
return KeyConfig::ACTION_BLANK;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "SupportedMimeTypes"))
{
const char *MimeTypes[] = {}; // Needs supplying
dbus_respond_array(m, MimeTypes, 0);
return KeyConfig::ACTION_BLANK;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "CanGoNext")
|| dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "CanGoPrevious"))
{
dbus_respond_boolean(m, 0);
return KeyConfig::ACTION_BLANK;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "CanSeek"))
{
dbus_respond_boolean(m, reader->CanSeek());
return KeyConfig::ACTION_BLANK;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "CanControl")
|| dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "CanPlay")
|| dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "CanPause"))
{
dbus_respond_boolean(m, 1);
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PLAYER, "Next"))
{
dbus_respond_ok(m);
return KeyConfig::ACTION_NEXT_CHAPTER;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PLAYER, "Previous"))
{
dbus_respond_ok(m);
return KeyConfig::ACTION_PREVIOUS_CHAPTER;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PLAYER, "Pause")
|| dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PLAYER, "PlayPause"))
{
dbus_respond_ok(m);
return KeyConfig::ACTION_PAUSE;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PLAYER, "Stop"))
{
dbus_respond_ok(m);
return KeyConfig::ACTION_EXIT;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PLAYER, "Seek"))
{
DBusError error;
dbus_error_init(&error);
int64_t offset;
dbus_message_get_args(m, &error, DBUS_TYPE_INT64, &offset, DBUS_TYPE_INVALID);
// Make sure a value is sent for seeking
if (dbus_error_is_set(&error))
{
CLog::Log(LOGWARNING, "Seek D-Bus Error: %s", error.message );
dbus_error_free(&error);
dbus_respond_ok(m);
return KeyConfig::ACTION_BLANK;
}
else
{
dbus_respond_int64(m, offset);
return OMXControlResult(KeyConfig::ACTION_SEEK_RELATIVE, offset);
}
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PLAYER, "SetPosition"))
{
DBusError error;
dbus_error_init(&error);
int64_t position;
dbus_message_get_args(m, &error, DBUS_TYPE_INT64, &position, DBUS_TYPE_INVALID);
// Make sure a value is sent for setting position
if (dbus_error_is_set(&error))
{
CLog::Log(LOGWARNING, "SetPosition D-Bus Error: %s", error.message );
dbus_error_free(&error);
dbus_respond_ok(m);
return KeyConfig::ACTION_BLANK;
}
else
{
dbus_respond_int64(m, position);
return OMXControlResult(KeyConfig::ACTION_SEEK_ABSOLUTE, position);
}
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "PlaybackStatus"))
{
const char *status;
if (clock->OMXIsPaused())
{
status = "Paused";
}
else
{
status = "Playing";
}
dbus_respond_string(m, status);
return KeyConfig::ACTION_BLANK;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "Volume"))
{
DBusError error;
dbus_error_init(&error);
double volume;
dbus_message_get_args(m, &error, DBUS_TYPE_DOUBLE, &volume, DBUS_TYPE_INVALID);
if (dbus_error_is_set(&error))
{ // i.e. Get current volume
dbus_error_free(&error);
dbus_respond_double(m, audio->GetVolume());
return KeyConfig::ACTION_BLANK;
}
else
{
audio->SetVolume(volume);
dbus_respond_double(m, volume);
return KeyConfig::ACTION_BLANK;
}
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "Mute"))
{
audio->SetMute(true);
dbus_respond_ok(m);
return KeyConfig::ACTION_BLANK;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "Unmute"))
{
audio->SetMute(false);
dbus_respond_ok(m);
return KeyConfig::ACTION_BLANK;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "Position"))
{
// Returns the current position in microseconds
int64_t pos = clock->OMXMediaTime();
dbus_respond_int64(m, pos);
return KeyConfig::ACTION_BLANK;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "Duration"))
{
// Returns the duration in microseconds
int64_t dur = reader->GetStreamLength();
dur *= 1000; // ms -> us
dbus_respond_int64(m, dur);
return KeyConfig::ACTION_BLANK;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "MinimumRate"))
{
dbus_respond_double(m, 0.0);
return KeyConfig::ACTION_BLANK;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PROPERTIES, "MaximumRate"))
{
dbus_respond_double(m, 1.125);
return KeyConfig::ACTION_BLANK;
// Implement extra OMXPlayer controls
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PLAYER, "ListSubtitles"))
{
int count = reader->SubtitleStreamCount();
char** values = new char*[count];
for (int i=0; i < count; i++)
{
asprintf(&values[i], "%d:%s:%s:%s:%s", i,
reader->GetStreamLanguage(OMXSTREAM_SUBTITLE, i).c_str(),
reader->GetStreamName(OMXSTREAM_SUBTITLE, i).c_str(),
reader->GetCodecName(OMXSTREAM_SUBTITLE, i).c_str(),
((int)subtitles->GetActiveStream() == i) ? "active" : "");
}
dbus_respond_array(m, (const char**)values, count);
// Cleanup
for (int i=0; i < count; i++)
{
delete[] values[i];
}
return KeyConfig::ACTION_BLANK;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PLAYER, "VideoPos"))
{
DBusError error;
dbus_error_init(&error);
const char *win;
const char *oPath; // ignoring path right now because we don't have a playlist
dbus_message_get_args(m, &error, DBUS_TYPE_OBJECT_PATH, &oPath, DBUS_TYPE_STRING, &win, DBUS_TYPE_INVALID);
// Make sure a value is sent for setting VideoPos
if (dbus_error_is_set(&error))
{
CLog::Log(LOGWARNING, "VideoPos D-Bus Error: %s", error.message );
dbus_error_free(&error);
dbus_respond_ok(m);
return KeyConfig::ACTION_BLANK;
}
else
{
dbus_respond_string(m, win);
return OMXControlResult(KeyConfig::ACTION_MOVE_VIDEO, win);
}
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PLAYER, "HideVideo"))
{
dbus_respond_ok(m);
return KeyConfig::ACTION_HIDE_VIDEO;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PLAYER, "UnHideVideo"))
{
dbus_respond_ok(m);
return KeyConfig::ACTION_UNHIDE_VIDEO;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PLAYER, "ListAudio"))
{
int count = reader->AudioStreamCount();
char** values = new char*[count];
for (int i=0; i < count; i++)
{
asprintf(&values[i], "%d:%s:%s:%s:%s", i,
reader->GetStreamLanguage(OMXSTREAM_AUDIO, i).c_str(),
reader->GetStreamName(OMXSTREAM_AUDIO, i).c_str(),
reader->GetCodecName(OMXSTREAM_AUDIO, i).c_str(),
(reader->GetAudioIndex() == i) ? "active" : "");
}
dbus_respond_array(m, (const char**)values, count);
// Cleanup
for (int i=0; i < count; i++)
{
delete[] values[i];
}
return KeyConfig::ACTION_BLANK;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PLAYER, "ListVideo"))
{
int count = reader->AudioStreamCount();
char** values = new char*[count];
for (int i=0; i < count; i++)
{
asprintf(&values[i], "%d:%s:%s:%s:%s", i,
reader->GetStreamLanguage(OMXSTREAM_VIDEO, i).c_str(),
reader->GetStreamName(OMXSTREAM_VIDEO, i).c_str(),
reader->GetCodecName(OMXSTREAM_VIDEO, i).c_str(),
(reader->GetVideoIndex() == i) ? "active" : "");
}
dbus_respond_array(m, (const char**)values, count);
// Cleanup
for (int i=0; i < count; i++)
{
delete[] values[i];
}
return KeyConfig::ACTION_BLANK;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PLAYER, "SelectSubtitle"))
{
DBusError error;
dbus_error_init(&error);
int index;
dbus_message_get_args(m, &error, DBUS_TYPE_INT32, &index, DBUS_TYPE_INVALID);
if (dbus_error_is_set(&error))
{
dbus_error_free(&error);
dbus_respond_boolean(m, 0);
}
else
{
if (reader->SetActiveStream(OMXSTREAM_SUBTITLE, index))
{
subtitles->SetActiveStream(reader->GetSubtitleIndex());
dbus_respond_boolean(m, 1);
}
else {
dbus_respond_boolean(m, 0);
}
}
return KeyConfig::ACTION_BLANK;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PLAYER, "SelectAudio"))
{
DBusError error;
dbus_error_init(&error);
int index;
dbus_message_get_args(m, &error, DBUS_TYPE_INT32, &index, DBUS_TYPE_INVALID);
if (dbus_error_is_set(&error))
{
dbus_error_free(&error);
dbus_respond_boolean(m, 0);
}
else
{
if (reader->SetActiveStream(OMXSTREAM_AUDIO, index))
{
dbus_respond_boolean(m, 1);
}
else {
dbus_respond_boolean(m, 0);
}
}
return KeyConfig::ACTION_BLANK;
}
// TODO: SelectVideo ???
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PLAYER, "ShowSubtitles"))
{
subtitles->SetVisible(true);
dbus_respond_ok(m);
return KeyConfig::ACTION_BLANK;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PLAYER, "HideSubtitles"))
{
subtitles->SetVisible(false);
dbus_respond_ok(m);
return KeyConfig::ACTION_BLANK;
}
else if (dbus_message_is_method_call(m, OMXPLAYER_DBUS_INTERFACE_PLAYER, "Action"))
{
DBusError error;
dbus_error_init(&error);
int action;
dbus_message_get_args(m, &error, DBUS_TYPE_INT32, &action, DBUS_TYPE_INVALID);
if (dbus_error_is_set(&error))
{
dbus_error_free(&error);
dbus_respond_ok(m);
return KeyConfig::ACTION_BLANK;
}
else
{
dbus_respond_ok(m);
return action; // Directly return enum
}
}
else {
CLog::Log(LOGWARNING, "Unhandled dbus message, member: %s interface: %s type: %d path: %s", dbus_message_get_member(m), dbus_message_get_interface(m), dbus_message_get_type(m), dbus_message_get_path(m) );
}
return KeyConfig::ACTION_BLANK;
}
void*
serverthread(void*) {
DBusMessage* msg;
DBusError err;
int ret;
printf("Listening for method calls\n");
if (pipe(quitpipe) == -1) {
fprintf(stderr, "Could not create pipe.\n");
return 0;
}
// initialise the error
dbus_error_init(&err);
// connect to the bus and check for errors
conn = dbus_bus_get(DBUS_BUS_SESSION, &err);
if (dbus_error_is_set(&err)) {
fprintf(stderr, "Connection Error (%s)\n", err.message);
dbus_error_free(&err);
return 0;
}
if (NULL == conn) {
fprintf(stderr, "Connection Null\n");
return 0;
}
// request our name on the bus and check for errors
ret = dbus_bus_request_name(conn, "vandenoever.strigi",
DBUS_NAME_FLAG_REPLACE_EXISTING , &err);
if (dbus_error_is_set(&err)) {
fprintf(stderr, "Name Error (%s)\n", err.message);
dbus_error_free(&err);
}
if (DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER != ret) {
fprintf(stderr, "Not Primary Owner (%d)\n", ret);
return 0;
}
for (int i=0; i<10; ++i) {
printf("server\n");
}
int fd;
dbus_connection_get_unix_fd(conn, &fd);
bool run;
do {
// block until there's activit on the port
fd_set rfds;
struct timeval tv;
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
FD_SET(quitpipe[0], &rfds);
printf("server\n");
tv.tv_sec = 50000;
tv.tv_usec = 0;
int retval = select(fd+1, &rfds, 0, 0, &tv);
if (retval == -1 || FD_ISSET(quitpipe[0], &rfds)) break;
// non blocking read of the next available message
dbus_connection_read_write_dispatch(conn, 0);
// dbus_connection_read_write(conn, 0);
msg = dbus_connection_pop_message(conn);
dbus_connection_flush(conn);
dbus_message_unref(msg);
STRIGI_MUTEX_LOCK(&lock);
run = keeprunning;
STRIGI_MUTEX_UNLOCK(&lock);
} while (run);
dbus_connection_unref(conn);
dbus_connection_unref(conn);
dbus_shutdown();
printf("after dbus_shutdown\n");
return 0;
}
/** Dbus provider loop. waits for messages and call handlers on them.
Just receive messages, doesn't do initialization or finalization
To stop the loop, set the settings->connection to NULL.
*
* @param data pointer to initialized dbus_state_holder
* @return NULL
*/
static void *dbus_provider_loop(void *data)
{
message_handle_state_e state = ZFSD_MESSAGE_HANDLED;
dbus_state_holder settings = (dbus_state_holder) data;
DBusMessage *msg = NULL;
int listener_index = 0;
#ifdef ENABLE_CHECKING
if (data == NULL)
{
message(LOG_ERROR, FACILITY_DBUS,
"NULL settings struct in dbus_provider_loop\n");
return NULL;
}
#endif
while (state == ZFSD_MESSAGE_HANDLED)
{
pthread_mutex_lock(&(settings->mutex));
if (settings->connection == NULL)
{
state = ZFSD_NO_MESSAGE;
goto NEXT;
}
// non blocking read of the next available message
dbus_connection_read_write(settings->connection,
DBUS_CONNECTION_TIMEOUT);
msg = dbus_connection_pop_message(settings->connection);
// loop again if we haven't got a message
if (msg == NULL)
{
goto NEXT;
}
message(LOG_DEBUG, FACILITY_DBUS,
"received message '%s' on iface '%s'\n",
dbus_message_get_member(msg), dbus_message_get_interface(msg));
for (listener_index = 0; listener_index < settings->listener_count;
listener_index++)
{
message(LOG_LOOPS, FACILITY_DBUS, "trying listener %d\n",
listener_index);
state =
settings->listeners[listener_index].
handle_message(settings->connection, &(settings->error), msg);
if (state == ZFSD_MESSAGE_HANDLED)
{
break;
}
}
// ignore messages from org.freedesktop.DBus interface (e.g.
// NameAcquired signal)
if ((state != ZFSD_MESSAGE_HANDLED)
&& !strcmp(dbus_message_get_interface(msg),
"org.freedesktop.DBus"))
state = ZFSD_MESSAGE_HANDLED;
if (state != ZFSD_MESSAGE_HANDLED)
{
message(LOG_WARNING, FACILITY_DBUS, "Can't handle message (%d)\n",
state);
state = ZFSD_MESSAGE_HANDLED;
}
// free the message
dbus_message_unref(msg);
NEXT:
pthread_mutex_unlock(&(settings->mutex));
zfs_pthread_yield();
}
return NULL;
}
void receive()
{
DBusMessage* msg;
DBusMessageIter args;
DBusConnection* conn;
DBusError err;
int ret;
char* sigvalue;
printf("Listening for signals\n");
// initialise the errors
dbus_error_init(&err);
// connect to the bus and check for errors
conn = dbus_bus_get(DBUS_BUS_SESSION, &err);
if (dbus_error_is_set(&err)) {
fprintf(stderr, "Connection Error (%s)\n", err.message);
dbus_error_free(&err);
}
if (NULL == conn) {
exit(1);
}
// request our name on the bus and check for errors
ret = dbus_bus_request_name(conn, "test.signal.sink",
DBUS_NAME_FLAG_REPLACE_EXISTING, &err);
if (dbus_error_is_set(&err)) {
fprintf(stderr, "Name Error (%s)\n", err.message);
dbus_error_free(&err);
}
if (DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER != ret) {
exit(1);
}
// add a rule for which messages we want to see
dbus_bus_add_match(conn, "type='signal',interface='test.signal.Type'",
&err); // see signals from the given interface
dbus_connection_flush(conn);
if (dbus_error_is_set(&err)) {
fprintf(stderr, "Match Error (%s)\n", err.message);
exit(1);
}
printf("Match rule sent\n");
// loop listening for signals being emmitted
while (true) {
// non blocking read of the next available message
dbus_connection_read_write(conn, 0);
msg = dbus_connection_pop_message(conn);
// loop again if we haven't read a message
if (NULL == msg) {
usleep(10000);
continue;
}
// check if the message is a signal from the correct interface and with the correct name
if (dbus_message_is_signal(msg, "test.signal.Type", "Test")) {
// read the parameters
if (!dbus_message_iter_init(msg, &args))
fprintf(stderr, "Message Has No Parameters\n");
else if (DBUS_TYPE_STRING
!= dbus_message_iter_get_arg_type(
&args))
fprintf(stderr, "Argument is not string!\n");
else
dbus_message_iter_get_basic(&args, &sigvalue);
printf("Got Signal with value %s\n", sigvalue);
}
// free the message
dbus_message_unref(msg);
}
}
