/usr/include/x86_64-linux-gnu/alljoyn/ProxyBusObject.h is in liballjoyn-dev-1504 15.04b-8.
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#define _ALLJOYN_REMOTEBUSOBJECT_H
/**
* @file
* This file defines the class ProxyBusObject.
* The ProxyBusObject represents a single object registered registered on the bus.
* ProxyBusObjects are used to make method calls on these remotely located DBus objects.
*/
/******************************************************************************
* Copyright AllSeen Alliance. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
******************************************************************************/
#include <qcc/platform.h>
#include <set>
#include <qcc/String.h>
#include <alljoyn/InterfaceDescription.h>
#include <alljoyn/MessageReceiver.h>
#include <alljoyn/MsgArg.h>
#include <alljoyn/Message.h>
#include <alljoyn/Session.h>
#include <alljoyn/Status.h>
namespace qcc {
/** @internal Forward references */
class Mutex;
class Condition;
class Thread;
}
namespace ajn {
/** @internal Forward references */
class BusAttachment;
/**
* Each %ProxyBusObject instance represents a single DBus/AllJoyn object registered
* somewhere on the bus. ProxyBusObjects are used to make method calls on these
* remotely located DBus objects.
*/
class ProxyBusObject : public MessageReceiver {
friend class XmlHelper;
friend class AllJoynObj;
friend class MatchRuleTracker;
public:
/**
* The default timeout for method calls (25 seconds)
*/
static const uint32_t DefaultCallTimeout = 25000;
/**
* Base class used as a container for callback typedefs
*
* @internal Do not use this pattern for creating new public Async versions of the APIs. See
* the PropertiesChangedListener class below for an example of how to add new async APIs.
*/
class Listener {
public:
/**
* Callback registered with IntrospectRemoteObjectAsync()
*
* @param status ER_OK if successful or an error status indicating the reason for the failure.
* @param obj Remote bus object that was introspected
* @param context Context passed in IntrospectRemoteObjectAsync()
*/
typedef void (ProxyBusObject::Listener::* IntrospectCB)(QStatus status, ProxyBusObject* obj, void* context);
/**
* Callback registered with GetPropertyAsync()
*
* @param status - ER_OK if the property get request was successfull or:
* - #ER_BUS_OBJECT_NO_SUCH_INTERFACE if the specified interfaces does not exist on the remote object.
* - #ER_BUS_NO_SUCH_PROPERTY if the property does not exist
* - Other error status codes indicating the reason the get request failed.
* @param obj Remote bus object that was introspected
* @param value If status is ER_OK a MsgArg containing the returned property value
* @param context Caller provided context passed in to GetPropertyAsync()
*/
typedef void (ProxyBusObject::Listener::* GetPropertyCB)(QStatus status, ProxyBusObject* obj, const MsgArg& value, void* context);
/**
* Callback registered with GetAllPropertiesAsync()
*
* @param status - ER_OK if the get all properties request was successfull or:
* - #ER_BUS_OBJECT_NO_SUCH_INTERFACE if the specified interfaces does not exist on the remote object.
* - Other error status codes indicating the reason the get request failed.
* @param obj Remote bus object that was introspected
* @param[out] values If status is ER_OK an array of dictionary entries, signature "a{sv}" listing the properties.
* @param context Caller provided context passed in to GetPropertyAsync()
*/
typedef void (ProxyBusObject::Listener::* GetAllPropertiesCB)(QStatus status, ProxyBusObject* obj, const MsgArg& values, void* context);
/**
* Callback registered with SetPropertyAsync()
*
* @param status - ER_OK if the property was successfully set or:
* - #ER_BUS_OBJECT_NO_SUCH_INTERFACE if the specified interfaces does not exist on the remote object.
* - #ER_BUS_NO_SUCH_PROPERTY if the property does not exist
* - Other error status codes indicating the reason the set request failed.
* @param obj Remote bus object that was introspected
* @param context Caller provided context passed in to SetPropertyAsync()
*/
typedef void (ProxyBusObject::Listener::* SetPropertyCB)(QStatus status, ProxyBusObject* obj, void* context);
};
/**
* Pure virtual base class for the Properties Changed listener.
*/
class PropertiesChangedListener {
public:
virtual ~PropertiesChangedListener() { }
/**
* Callback to receive property changed events.
*
* @param obj Remote bus object that owns the property that changed.
* @param ifaceName Name of the interface that defines the property.
* @param changed Property values that changed as an array of dictionary entries, signature "a{sv}".
* @param invalidated Properties whose values have been invalidated, signature "as".
* @param context Caller provided context passed in to RegisterPropertiesChangedListener
*/
virtual void PropertiesChanged(ProxyBusObject& obj,
const char* ifaceName,
const MsgArg& changed,
const MsgArg& invalidated,
void* context) = 0;
};
/**
* Create a default (unusable) %ProxyBusObject.
*
* This constructor exist only to support assignment.
*/
ProxyBusObject();
/**
* Create an empty proxy object that refers to an object at given remote service name. Note
* that the created proxy object does not contain information about the interfaces that the
* actual remote object implements with the exception that org.freedesktop.DBus.Peer
* interface is special-cased (per the DBus spec) and can always be called on any object. Nor
* does it contain information about the child objects that the actual remote object might
* contain. The security mode can be specified if known or can be derived from the XML
* description.
*
* To fill in this object with the interfaces and child object names that the actual remote
* object describes in its introspection data, call IntrospectRemoteObject() or
* IntrospectRemoteObjectAsync().
*
* If the remote service name is set to a unique name, then both
* GetServiceName() and GetUniqueName() will return the unique name.
*
* @param bus The bus.
* @param service The remote service name (well-known or unique).
* @param path The absolute (non-relative) object path for the remote object.
* @param sessionId The session id the be used for communicating with remote object.
* @param secure The security mode for the remote object.
*/
ProxyBusObject(BusAttachment& bus, const char* service, const char* path, SessionId sessionId, bool secure = false);
/**
* Create an empty proxy object that refers to an object at given remote service name. Note
* that the created proxy object does not contain information about the interfaces that the
* actual remote object implements with the exception that org.freedesktop.DBus.Peer
* interface is special-cased (per the DBus spec) and can always be called on any object. Nor
* does it contain information about the child objects that the actual remote object might
* contain. The security mode can be specified if known or can be derived from the XML
* description.
*
* To fill in this object with the interfaces and child object names that the actual remote
* object describes in its introspection data, call IntrospectRemoteObject() or
* IntrospectRemoteObjectAsync().
*
* This version is primarily used during introspection where the
* unique name is known. If, when creating the ProxyBusObject,
* both an alias is known and the unique name is known, then use
* this constructor. Note, that the only the service name is used
* when generating messages.
*
* @param bus The bus.
* @param service The remote service name (well-known or unique).
* @param uniqueName The remote service's unique name.
* @param path The absolute (non-relative) object path for the remote object.
* @param sessionId The session id the be used for communicating with remote object.
* @param secure The security mode for the remote object.
*/
ProxyBusObject(BusAttachment& bus, const char* service, const char* uniqueName, const char* path, SessionId sessionId, bool secure = false);
/**
* %ProxyBusObject destructor.
*/
virtual ~ProxyBusObject();
/**
* Return the absolute object path for the remote object.
*
* @return Object path
*/
const qcc::String& GetPath(void) const;
/**
* Return the remote service name for this object.
*
* @return Service name (typically a well-known service name but may be a unique name)
*/
const qcc::String& GetServiceName(void) const;
/**
* Return the remote unique name for this object.
*
* @return Service name (typically a well-known service name but may be a unique name)
*/
const qcc::String& GetUniqueName(void) const;
/**
* Return the session Id for this object.
*
* @return Session Id
*/
SessionId GetSessionId(void) const;
/**
* Query the remote object on the bus to determine the interfaces and
* children that exist. Use this information to populate this proxy's
* interfaces and children.
*
* @param timeout Timeout specified in milliseconds to wait for a reply
*
* @return
* - #ER_OK if successful
* - An error status otherwise
*/
QStatus IntrospectRemoteObject(uint32_t timeout = DefaultCallTimeout);
/**
* Query the remote object on the bus to determine the interfaces and
* children that exist. Use this information to populate this object's
* interfaces and children.
*
* This call executes asynchronously. When the introspection response
* is received from the actual remote object, this ProxyBusObject will
* be updated and the callback will be called.
*
* This call exists primarily to allow introspection of remote objects
* to be done inside AllJoyn method/signal/reply handlers and ObjectRegistered
* callbacks.
*
* @param listener Pointer to the object that will receive the callback.
* @param callback Method on listener that will be called.
* @param context User defined context which will be passed as-is to callback.
* @param timeout Timeout specified in milliseconds to wait for a reply
* @return
* - #ER_OK if successful.
* - An error status otherwise
*/
QStatus IntrospectRemoteObjectAsync(ProxyBusObject::Listener* listener, ProxyBusObject::Listener::IntrospectCB callback, void* context, uint32_t timeout = DefaultCallTimeout);
/**
* Get a property from an interface on the remote object.
*
* @param iface Name of interface to retrieve property from.
* @param property The name of the property to get.
* @param[out] value Property value.
* @param timeout Timeout specified in milliseconds to wait for a reply
*
* @return
* - #ER_OK if the property was obtained.
* - #ER_BUS_OBJECT_NO_SUCH_INTERFACE if the no such interface on this remote object.
* - #ER_BUS_NO_SUCH_PROPERTY if the property does not exist
*/
QStatus GetProperty(const char* iface, const char* property, MsgArg& value, uint32_t timeout = DefaultCallTimeout) const;
/**
* Make an asynchronous request to get a property from an interface on the remote object.
* The property value is passed to the callback function.
*
* @param iface Name of interface to retrieve property from.
* @param property The name of the property to get.
* @param listener Pointer to the object that will receive the callback.
* @param callback Method on listener that will be called.
* @param context User defined context which will be passed as-is to callback.
* @param timeout Timeout specified in milliseconds to wait for a reply
* @return
* - #ER_OK if the request to get the property was successfully issued .
* - #ER_BUS_OBJECT_NO_SUCH_INTERFACE if the no such interface on this remote object.
* - An error status otherwise
*/
QStatus GetPropertyAsync(const char* iface,
const char* property,
ProxyBusObject::Listener* listener,
ProxyBusObject::Listener::GetPropertyCB callback,
void* context,
uint32_t timeout = DefaultCallTimeout);
/**
* Get all properties from an interface on the remote object.
*
* @param iface Name of interface to retrieve all properties from.
* @param[out] values Property values returned as an array of dictionary entries, signature "a{sv}".
* @param timeout Timeout specified in milliseconds to wait for a reply
*
* @return
* - #ER_OK if the property was obtained.
* - #ER_BUS_OBJECT_NO_SUCH_INTERFACE if the no such interface on this remote object.
* - #ER_BUS_NO_SUCH_PROPERTY if the property does not exist
*/
QStatus GetAllProperties(const char* iface, MsgArg& values, uint32_t timeout = DefaultCallTimeout) const;
/**
* Make an asynchronous request to get all properties from an interface on the remote object.
*
* @param iface Name of interface to retrieve property from.
* @param listener Pointer to the object that will receive the callback.
* @param callback Method on listener that will be called.
* @param context User defined context which will be passed as-is to callback.
* @param timeout Timeout specified in milliseconds to wait for a reply
* @return
* - #ER_OK if the request to get all properties was successfully issued .
* - #ER_BUS_OBJECT_NO_SUCH_INTERFACE if the no such interface on this remote object.
* - An error status otherwise
*/
QStatus GetAllPropertiesAsync(const char* iface,
ProxyBusObject::Listener* listener,
ProxyBusObject::Listener::GetPropertyCB callback,
void* context,
uint32_t timeout = DefaultCallTimeout);
/**
* Set a property on an interface on the remote object.
*
* @param iface Remote object's interface on which the property is defined.
* @param property The name of the property to set
* @param value The value to set
* @param timeout Timeout specified in milliseconds to wait for a reply
*
* @return
* - #ER_OK if the property was set
* - #ER_BUS_OBJECT_NO_SUCH_INTERFACE if the specified interfaces does not exist on the remote object.
* - #ER_BUS_NO_SUCH_PROPERTY if the property does not exist
*/
QStatus SetProperty(const char* iface, const char* property, MsgArg& value, uint32_t timeout = DefaultCallTimeout) const;
/**
* Make an asynchronous request to set a property on an interface on the remote object.
* A callback function reports the success or failure of ther operation.
*
* @param iface Remote object's interface on which the property is defined.
* @param property The name of the property to set.
* @param value The value to set
* @param listener Pointer to the object that will receive the callback.
* @param callback Method on listener that will be called.
* @param context User defined context which will be passed as-is to callback.
* @param timeout Timeout specified in milliseconds to wait for a reply
* @return
* - #ER_OK if the request to set the property was successfully issued .
* - #ER_BUS_OBJECT_NO_SUCH_INTERFACE if the specified interfaces does not exist on the remote object.
* - An error status otherwise
*/
QStatus SetPropertyAsync(const char* iface,
const char* property,
MsgArg& value,
ProxyBusObject::Listener* listener,
ProxyBusObject::Listener::SetPropertyCB callback,
void* context,
uint32_t timeout = DefaultCallTimeout);
/**
* Helper function to sychronously set a uint32 property on the remote object.
*
* @param iface Remote object's interface on which the property is defined.
* @param property The name of the property to set
* @param u The uint32 value to set
* @param timeout Timeout specified in milliseconds to wait for a reply
*
* @return
* - #ER_OK if the property was set
* - #ER_BUS_OBJECT_NO_SUCH_INTERFACE if the specified interfaces does not exist on the remote object.
* - #ER_BUS_NO_SUCH_PROPERTY if the property does not exist
*/
QStatus SetProperty(const char* iface, const char* property, uint32_t u, uint32_t timeout = DefaultCallTimeout) const {
MsgArg arg("u", u); return SetProperty(iface, property, arg, timeout);
}
/**
* Helper function to sychronously set an int32 property on the remote object.
*
* @param iface Remote object's interface on which the property is defined.
* @param property The name of the property to set
* @param i The int32 value to set
* @param timeout Timeout specified in milliseconds to wait for a reply
*
* @return
* - #ER_OK if the property was set
* - #ER_BUS_OBJECT_NO_SUCH_INTERFACE if the specified interfaces does not exist on the remote object.
* - #ER_BUS_NO_SUCH_PROPERTY if the property does not exist
*/
QStatus SetProperty(const char* iface, const char* property, int32_t i, uint32_t timeout = DefaultCallTimeout) const {
MsgArg arg("i", i); return SetProperty(iface, property, arg, timeout);
}
/**
* Helper function to sychronously set string property on the remote object from a C string.
*
* @param iface Remote object's interface on which the property is defined.
* @param property The name of the property to set
* @param s The string value to set
* @param timeout Timeout specified in milliseconds to wait for a reply
*
* @return
* - #ER_OK if the property was set
* - #ER_BUS_OBJECT_NO_SUCH_INTERFACE if the specified interfaces does not exist on the remote object.
* - #ER_BUS_NO_SUCH_PROPERTY if the property does not exist
*/
QStatus SetProperty(const char* iface, const char* property, const char* s, uint32_t timeout = DefaultCallTimeout) const {
MsgArg arg("s", s); return SetProperty(iface, property, arg, timeout);
}
/**
* Helper function to sychronously set string property on the remote object from a qcc::String.
*
* @param iface Remote object's interface on which the property is defined.
* @param property The name of the property to set
* @param s The string value to set
* @param timeout Timeout specified in milliseconds to wait for a reply
*
* @return
* - #ER_OK if the property was set
* - #ER_BUS_OBJECT_NO_SUCH_INTERFACE if the specified interfaces does not exist on the remote object.
* - #ER_BUS_NO_SUCH_PROPERTY if the property does not exist
*/
QStatus SetProperty(const char* iface, const char* property, const qcc::String& s, uint32_t timeout = DefaultCallTimeout) const {
MsgArg arg("s", s.c_str()); return SetProperty(iface, property, arg, timeout);
}
/**
* Function to register a handler for property change events.
* Note that registering the same handler callback for the same
* interface will overwrite the previous registration. The same
* handler callback may be registered for several different
* interfaces simultaneously.
*
* Note that this makes method calls under the hood. If this is
* called from a message handler or other AllJoyn callback, you
* must call BusAttachment::EnableConcurrentCallbacks().
*
* @param iface Remote object's interface on which the property is defined.
* @param properties The name of the properties to monitor (NULL for all).
* @param propertiesSize Number of properties to monitor.
* @param listener Reference to the object that will receive the callback.
* @param context User defined context which will be passed as-is to callback.
*
* @return
* - #ER_OK if the handler was registered successfully
* - #ER_BUS_OBJECT_NO_SUCH_INTERFACE if the specified interfaces does not exist on the remote object.
* - #ER_BUS_NO_SUCH_PROPERTY if the property does not exist
*/
QStatus RegisterPropertiesChangedListener(const char* iface,
const char** properties,
size_t propertiesSize,
ProxyBusObject::PropertiesChangedListener& listener,
void* context);
/**
* Function to unregister a handler for property change events.
*
* @param iface Remote object's interface on which the property is defined.
* @param listener Reference to the object that used to receive the callback.
*
* @return
* - #ER_OK if the handler was registered successfully
* - #ER_BUS_OBJECT_NO_SUCH_INTERFACE if the specified interfaces does not exist on the remote object.
*/
QStatus UnregisterPropertiesChangedListener(const char* iface, ProxyBusObject::PropertiesChangedListener& listener);
/**
* Returns the interfaces implemented by this object. Note that all proxy bus objects
* automatically inherit the "org.freedesktop.DBus.Peer" which provides the built-in "ping"
* method, so this method always returns at least that one interface.
*
* @param ifaces A pointer to an InterfaceDescription array to receive the interfaces. Can be NULL in
* which case no interfaces are returned and the return value gives the number
* of interface available.
* @param numIfaces The size of the InterfaceDescription array. If this value is smaller than the total
* number of interfaces only numIfaces will be returned.
*
* @return The number of interfaces returned or the total number of interfaces if ifaces is NULL.
*/
size_t GetInterfaces(const InterfaceDescription** ifaces = NULL, size_t numIfaces = 0) const;
/**
* Returns a pointer to an interface description. Returns NULL if the object does not implement
* the requested interface.
*
* @param iface The name of interface to get.
*
* @return
* - A pointer to the requested interface description.
* - NULL if requested interface is not implemented or not found
*/
const InterfaceDescription* GetInterface(const char* iface) const;
/**
* Tests if this object implements the requested interface.
*
* @param iface The interface to check
*
* @return true if the object implements the requested interface
*/
bool ImplementsInterface(const char* iface) const { return GetInterface(iface) != NULL; }
/**
* Add an interface to this ProxyBusObject.
*
* Occasionally, AllJoyn library user may wish to call a method on
* a %ProxyBusObject that was not reported during introspection of the remote object.
* When this happens, the InterfaceDescription will have to be registered with the
* Bus manually and the interface will have to be added to the %ProxyBusObject using this method.
* @remark
* The interface added via this call must have been previously registered with the
* Bus. (i.e. it must have come from a call to Bus::GetInterface()).
*
* @param iface The interface to add to this object. Must come from Bus::GetInterface().
* @return
* - #ER_OK if successful.
* - An error status otherwise
*/
QStatus AddInterface(const InterfaceDescription& iface);
/**
* Add an existing interface to this object using the interface's name.
*
* @param name Name of existing interface to add to this object.
* @return
* - #ER_OK if successful.
* - An error status otherwise.
*/
QStatus AddInterface(const char* name);
/**
* Returns an array of ProxyBusObject pointers for the children of this
* %ProxyBusObject.
*
* @param children An array to %ProxyBusObject pointers to receive the
* children. Can be NULL in which case no children are
* returned and the return value gives the number of
* children available. Note that the lifetime of the
* pointers is limited to the lifetime of the parent.
* @param numChildren The size of the %ProxyBusObject array. If this value
* is smaller than the total number of children only
* numChildren will be returned.
*
* @return The number of children returned or the total number of children
* if children is NULL.
*/
size_t GetChildren(ProxyBusObject** children = NULL, size_t numChildren = 0);
/**
* Returns an array of _ProxyBusObjects for the children of this %ProxyBusObject.
* Unlike the unmanaged version of GetChildren, it is expected the caller will call
* delete on each _ProxyBusObject in the array returned.
*
* @param children A pointer to a %_ProxyBusObject array to receive the children. Can be NULL in
* which case no children are returned and the return value gives the number
* of children available.
* @param numChildren The size of the %_ProxyBusObject array. If this value is smaller than the total
* number of children only numChildren will be returned.
*
* @return The number of children returned or the total number of children if children is NULL.
*/
QCC_DEPRECATED(size_t GetManagedChildren(void* children = NULL, size_t numChildren = 0));
/**
* Get a path descendant ProxyBusObject (child) by its absolute or relative path name.
*
* For example, if this ProxyBusObject's path is @c "/foo/bar", then you
* can retrieve the ProxyBusObject for @c "/foo/bar/bat/baz" by calling
* @c GetChild("/foo/bar/bat/baz") or @c GetChild("/bat/baz"). The pointer
* that is returned is owned by the parent instance of ProxyBusObject and
* will be deleted when the parent is destroyed.
*
* @param path the absolute or relative path for the child.
*
* @return
* - The (potentially deep) descendant ProxyBusObject
* - NULL if not found.
*/
ProxyBusObject* GetChild(const char* path);
/**
* Get a path descendant _ProxyBusObject (child) by its absolute or relative path name.
*
* For example, if this _ProxyBusObject's path is @c "/foo/bar", then you can retrieve the
* _ProxyBusObject for @c "/foo/bar/bat/baz" by calling @c GetChild("/foo/bar/bat/baz") or
* @c GetChild("bat/baz"). Unlike the unmanaged version of GetChild, it is expected the
* caller will call delete on the _ProxyBusObject returned.
*
* @param inPath the absolute or relative path for the child.
*
* @return
* - The (potentially deep) descendant _ProxyBusObject
* - NULL if not found.
*/
QCC_DEPRECATED(void* GetManagedChild(const char* inPath));
/**
* Add a child object (direct or deep object path descendant) to this object.
* If you add a deep path descendant, this method will create intermediate
* ProxyBusObject children as needed.
*
* @remark
* - It is an error to try to add a child that already exists.
* - It is an error to try to add a child that has an object path that is not a descendant of this object's path.
*
* @param child Child ProxyBusObject
* @return
* - #ER_OK if successful.
* - #ER_BUS_BAD_CHILD_PATH if the path is a bad path
* - #ER_BUS_OBJ_ALREADY_EXISTS if the object already exists on the ProxyBusObject
*/
QStatus AddChild(const ProxyBusObject& child);
/**
* Remove a child object and any descendants it may have.
*
* @param path Absolute or relative (to this ProxyBusObject) object path.
* @return
* - #ER_OK if successful.
* - #ER_BUS_BAD_CHILD_PATH if the path given was not a valid path
* - #ER_BUS_OBJ_NOT_FOUND if the Child object was not found
* - #ER_FAIL any other unexpected error.
*/
QStatus RemoveChild(const char* path);
/**
* Make a synchronous method call from this object
*
* @param method Method being invoked.
* @param args The arguments for the method call (can be NULL)
* @param numArgs The number of arguments
* @param replyMsg The reply message received for the method call
* @param timeout Timeout specified in milliseconds to wait for a reply
* @param flags Logical OR of the message flags for this method call. The following flags apply to method calls:
* - If #ALLJOYN_FLAG_ENCRYPTED is set the message is authenticated and the payload if any is encrypted.
* - If #ALLJOYN_FLAG_AUTO_START is set the bus will attempt to start a service if it is not running.
*
*
* @return
* - #ER_OK if the method call succeeded and the reply message type is #MESSAGE_METHOD_RET
* - #ER_BUS_REPLY_IS_ERROR_MESSAGE if the reply message type is #MESSAGE_ERROR
*/
QStatus MethodCall(const InterfaceDescription::Member& method,
const MsgArg* args,
size_t numArgs,
Message& replyMsg,
uint32_t timeout = DefaultCallTimeout,
uint8_t flags = 0) const;
/**
* Make a synchronous method call from this object
*
* @param ifaceName Name of interface.
* @param methodName Name of method.
* @param args The arguments for the method call (can be NULL)
* @param numArgs The number of arguments
* @param replyMsg The reply message received for the method call
* @param timeout Timeout specified in milliseconds to wait for a reply
* @param flags Logical OR of the message flags for this method call. The following flags apply to method calls:
* - If #ALLJOYN_FLAG_ENCRYPTED is set the message is authenticated and the payload if any is encrypted.
* - If #ALLJOYN_FLAG_AUTO_START is set the bus will attempt to start a service if it is not running.
*
* @return
* - #ER_OK if the method call succeeded and the reply message type is #MESSAGE_METHOD_RET
* - #ER_BUS_REPLY_IS_ERROR_MESSAGE if the reply message type is #MESSAGE_ERROR
*/
virtual QStatus MethodCall(const char* ifaceName,
const char* methodName,
const MsgArg* args,
size_t numArgs,
Message& replyMsg,
uint32_t timeout = DefaultCallTimeout,
uint8_t flags = 0) const;
/**
* Make a fire-and-forget method call from this object. The caller will not be able to tell if
* the method call was successful or not. This is equivalent to calling MethodCall() with
* flags == ALLJOYN_FLAG_NO_REPLY_EXPECTED. Because this call doesn't block it can be made from
* within a signal handler.
*
* @param ifaceName Name of interface.
* @param methodName Name of method.
* @param args The arguments for the method call (can be NULL)
* @param numArgs The number of arguments
* @param flags Logical OR of the message flags for this method call. The following flags apply to method calls:
* - If #ALLJOYN_FLAG_ENCRYPTED is set the message is authenticated and the payload if any is encrypted.
* - If #ALLJOYN_FLAG_AUTO_START is set the bus will attempt to start a service if it is not running.
*
* @return
* - #ER_OK if the method call succeeded
*/
QStatus MethodCall(const char* ifaceName,
const char* methodName,
const MsgArg* args,
size_t numArgs,
uint8_t flags = 0) const
{
return MethodCallAsync(ifaceName, methodName, NULL, NULL, args, numArgs, NULL, 0, flags |= ALLJOYN_FLAG_NO_REPLY_EXPECTED);
}
/**
* Make a fire-and-forget method call from this object. The caller will not be able to tell if
* the method call was successful or not. This is equivalent to calling MethodCall() with
* flags == ALLJOYN_FLAG_NO_REPLY_EXPECTED. Because this call doesn't block it can be made from
* within a signal handler.
*
* @param method Method being invoked.
* @param args The arguments for the method call (can be NULL)
* @param numArgs The number of arguments
* @param flags Logical OR of the message flags for this method call. The following flags apply to method calls:
* - If #ALLJOYN_FLAG_ENCRYPTED is set the message is authenticated and the payload if any is encrypted.
* - If #ALLJOYN_FLAG_AUTO_START is set the bus will attempt to start a service if it is not running.
*
* @return
* - #ER_OK if the method call succeeded and the reply message type is #MESSAGE_METHOD_RET
*/
QStatus MethodCall(const InterfaceDescription::Member& method,
const MsgArg* args,
size_t numArgs,
uint8_t flags = 0) const
{
return MethodCallAsync(method, NULL, NULL, args, numArgs, NULL, 0, flags |= ALLJOYN_FLAG_NO_REPLY_EXPECTED);
}
/**
* Make an asynchronous method call from this object
*
* @param method Method being invoked.
* @param receiver The object to be called when the asych method call completes.
* @param replyFunc The function that is called to deliver the reply
* @param args The arguments for the method call (can be NULL)
* @param numArgs The number of arguments
* @param receiver The object to be called when the asych method call completes.
* @param context User-defined context that will be returned to the reply handler
* @param timeout Timeout specified in milliseconds to wait for a reply
* @param flags Logical OR of the message flags for this method call. The following flags apply to method calls:
* - If #ALLJOYN_FLAG_ENCRYPTED is set the message is authenticated and the payload if any is encrypted.
* - If #ALLJOYN_FLAG_AUTO_START is set the bus will attempt to start a service if it is not running.
* @return
* - ER_OK if successful
* - An error status otherwise
*/
QStatus MethodCallAsync(const InterfaceDescription::Member& method,
MessageReceiver* receiver,
MessageReceiver::ReplyHandler replyFunc,
const MsgArg* args = NULL,
size_t numArgs = 0,
void* context = NULL,
uint32_t timeout = DefaultCallTimeout,
uint8_t flags = 0) const;
/**
* Make an asynchronous method call from this object
*
* @param ifaceName Name of interface for method.
* @param methodName Name of method.
* @param receiver The object to be called when the asynchronous method call completes.
* @param replyFunc The function that is called to deliver the reply
* @param args The arguments for the method call (can be NULL)
* @param numArgs The number of arguments
* @param context User-defined context that will be returned to the reply handler
* @param timeout Timeout specified in milliseconds to wait for a reply
* @param flags Logical OR of the message flags for this method call. The following flags apply to method calls:
* - If #ALLJOYN_FLAG_ENCRYPTED is set the message is authenticated and the payload if any is encrypted.
* - If #ALLJOYN_FLAG_AUTO_START is set the bus will attempt to start a service if it is not running.
* @return
* - ER_OK if successful
* - An error status otherwise
*/
QStatus MethodCallAsync(const char* ifaceName,
const char* methodName,
MessageReceiver* receiver,
MessageReceiver::ReplyHandler replyFunc,
const MsgArg* args = NULL,
size_t numArgs = 0,
void* context = NULL,
uint32_t timeout = DefaultCallTimeout,
uint8_t flags = 0) const;
/**
* Initialize this proxy object from an XML string. Calling this method does several things:
*
* -# Create and register any new InterfaceDescription(s) that are mentioned in the XML.
* (Interfaces that are already registered with the bus are left "as-is".)
* -# Add all the interfaces mentioned in the introspection data to this ProxyBusObject.
* -# Recursively create any child ProxyBusObject(s) and create/add their associated @n
* interfaces as mentioned in the XML. Then add the descendant object(s) to the appropriate
* descendant of this ProxyBusObject (in the children collection). If the named child object
* already exists as a child of the appropriate ProxyBusObject, then it is updated
* to include any new interfaces or children mentioned in the XML.
*
* Note that when this method fails during parsing, the return code will be set accordingly.
* However, any interfaces which were successfully parsed prior to the failure
* may be registered with the bus. Similarly, any objects that were successfully created
* before the failure will exist in this object's set of children.
*
* @param xml An XML string in DBus introspection format.
* @param identifier An optional identifying string to include in error logging messages.
*
* @return
* - #ER_OK if parsing is completely successful.
* - An error status otherwise.
*/
QStatus ParseXml(const char* xml, const char* identifier = NULL);
/**
* Explicitly secure the connection to the remote peer for this proxy object. Peer-to-peer
* connections can only be secured if EnablePeerSecurity() was previously called on the bus
* attachment for this proxy object. If the peer-to-peer connection is already secure this
* function does nothing. Note that peer-to-peer connections are automatically secured when a
* method call requiring encryption is sent.
*
* This call causes messages to be send on the bus, therefore it cannot be called within AllJoyn
* callbacks (method/signal/reply handlers or ObjectRegistered callbacks, etc.)
*
* @param forceAuth If true, forces an re-authentication even if the peer connection is already
* authenticated.
*
* @return
* - #ER_OK if the connection was secured or an error status indicating that the
* connection could not be secured.
* - #ER_BUS_NO_AUTHENTICATION_MECHANISM if BusAttachment::EnablePeerSecurity() has not been called.
* - #ER_AUTH_FAIL if the attempt(s) to authenticate the peer failed.
* - Other error status codes indicating a failure.
*/
QStatus SecureConnection(bool forceAuth = false);
/**
* Asynchronously secure the connection to the remote peer for this proxy object. Peer-to-peer
* connections can only be secured if EnablePeerSecurity() was previously called on the bus
* attachment for this proxy object. If the peer-to-peer connection is already secure this
* function does nothing. Note that peer-to-peer connections are automatically secured when a
* method call requiring encryption is sent.
*
* Notification of success or failure is via the AuthListener passed to EnablePeerSecurity().
*
* @param forceAuth If true, forces an re-authentication even if the peer connection is already
* authenticated.
*
* @return
* - #ER_OK if securing could begin.
* - #ER_BUS_NO_AUTHENTICATION_MECHANISM if BusAttachment::EnablePeerSecurity() has not been called.
* - Other error status codes indicating a failure.
*/
QStatus SecureConnectionAsync(bool forceAuth = false);
/**
* Checks if other refers to the same internal instance has this.
*
* @param other The object being compared
* @return true iff this has identical internals to other
*/
bool iden(const ProxyBusObject& other) const { return internal.iden(other.internal); }
/**
* Equivalence operator.
*
* @param other The object being compared
* @return true iff this is the same as other
*/
bool operator==(const ProxyBusObject& other) const;
/**
* Less than operator.
*
* @param other The object being compared
* @return true iff this is less than other
*/
bool operator<(const ProxyBusObject& other) const;
/**
* Assignment operator.
*
* @param other The object being assigned from
* @return a copy of the ProxyBusObject
*/
ProxyBusObject& operator=(const ProxyBusObject& other);
/**
* Copy constructor
*
* @param other The object being copied from.
*/
ProxyBusObject(const ProxyBusObject& other);
/**
* Indicates if this is a valid (usable) proxy bus object.
*
* @return true if a valid proxy bus object, false otherwise.
*/
bool IsValid() const;
/**
* Indicates if the remote object for this proxy bus object is secure.
*
* @return true if the object is secure
*/
bool IsSecure() const;
/**
* Enable property caching for this proxy bus object.
*/
void EnablePropertyCaching();
private:
class Internal;
qcc::ManagedObj<Internal> internal; /**< Internal ProxyBusObject state */
bool isExiting; /**< true iff ProxyBusObject is in the process of being destroyed */
ProxyBusObject(qcc::ManagedObj<Internal> internal);
/**
* @internal
* Called by XmlHelper to set the secure flag when introspecting.
*
* @param isSecure indicates if node is secure or not
*/
void SetSecure(bool isSecure);
/**
* @internal
* Method return handler used to process synchronous method calls.
*
* @param msg Method return message
* @param context Opaque context passed from method_call to method_return
*/
void SyncReplyHandler(Message& msg, void* context);
/**
* @internal
* Introspection method_reply handler. (Internal use only)
*
* @param message Method return Message
* @param context Opaque context passed from method_call to method_return
*/
void IntrospectMethodCB(Message& message, void* context);
/**
* @internal
* GetProperty method_reply handler. (Internal use only)
*
* @param message Method return Message
* @param context Opaque context passed from method_call to method_return
*/
void GetPropMethodCB(Message& message, void* context);
/**
* @internal
* GetAllProperties method_reply handler. (Internal use only)
*
* @param message Method return Message
* @param context Opaque context passed from method_call to method_return
*/
void GetAllPropsMethodCB(Message& message, void* context);
/**
* @internal
* SetProperty method_reply handler. (Internal use only)
*
* @param message Method return Message
* @param context Opaque context passed from method_call to method_return
*/
void SetPropMethodCB(Message& message, void* context);
/**
* @internal
* Set the B2B endpoint to use for all communication with remote object.
* This method is for internal use only.
*
* @param b2bEp the RemoteEndpoint for Bus to Bus communication
*/
void SetB2BEndpoint(RemoteEndpoint& b2bEp);
/**
* @internal
* Internal introspection xml parse tree type.
*/
struct IntrospectionXml;
/**
* @internal
* Parse a single introspection @<node@> element.
*
* @param node XML element (must be a @<node@>).
*
* @return
* - #ER_OK if completely successful.
* - An error status otherwise
*/
static QStatus ParseNode(const IntrospectionXml& node);
/**
* @internal
* Parse a single introspection @<interface@> element.
*
* @param ifc XML element (must be an @<interface@>).
*
* @return
* - #ER_OK if completely successful.
* - An error status otherwise
*/
static QStatus ParseInterface(const IntrospectionXml& ifc);
};
/**
* _ProxyBusObject is a reference counted (managed) version of ProxyBusObject
*/
QCC_DEPRECATED(typedef qcc::ManagedObj<ProxyBusObject> _ProxyBusObject);
}
#endif
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