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-rw-r--r--src/leap/common/events/__init__.py31
-rw-r--r--src/leap/common/events/client.py38
-rw-r--r--src/leap/common/events/events.proto34
-rw-r--r--src/leap/common/events/events_pb2.py77
-rw-r--r--src/leap/common/events/server.py60
5 files changed, 223 insertions, 17 deletions
diff --git a/src/leap/common/events/__init__.py b/src/leap/common/events/__init__.py
index d498340..388ee17 100644
--- a/src/leap/common/events/__init__.py
+++ b/src/leap/common/events/__init__.py
@@ -123,3 +123,34 @@ def signal(signal, content="", mac_method="", mac="", reqcbk=None,
:rtype: leap.common.events.events_pb2.EventsResponse or None
"""
return client.signal(signal, content, mac_method, mac, reqcbk, timeout)
+
+def ping_client(port, reqcbk=None, timeout=1000):
+ """
+ Ping a client running in C{port}.
+
+ :param port: the port in which the client should be listening
+ :type port: int
+ :param reqcbk: a callback to be called when a response from client is
+ received
+ :type reqcbk: function
+ callback(leap.common.events.events_pb2.EventResponse)
+ :param timeout: the timeout for synch calls
+ :type timeout: int
+ """
+ return client.ping(port, reqcbk=reqcbk, timeout=timeout)
+
+
+def ping_server(port=server.SERVER_PORT, reqcbk=None, timeout=1000):
+ """
+ Ping the server.
+
+ :param port: the port in which server should be listening
+ :type port: int
+ :param reqcbk: a callback to be called when a response from server is
+ received
+ :type reqcbk: function
+ callback(leap.common.events.events_pb2.EventResponse)
+ :param timeout: the timeout for synch calls
+ :type timeout: int
+ """
+ return server.ping(port, reqcbk=reqcbk, timeout=timeout)
diff --git a/src/leap/common/events/client.py b/src/leap/common/events/client.py
index 17fc326..587b02a 100644
--- a/src/leap/common/events/client.py
+++ b/src/leap/common/events/client.py
@@ -233,6 +233,28 @@ def signal(signal, content="", mac_method="", mac="", reqcbk=None,
return service.signal(request, callback=reqcbk, timeout=timeout)
+def ping(port, reqcbk=None, timeout=1000):
+ """
+ Ping a client running in C{port}.
+
+ :param port: the port in which the client should be listening
+ :type port: int
+ :param reqcbk: a callback to be called when a response from client is
+ received
+ :type reqcbk: function
+ callback(leap.common.events.events_pb2.EventResponse)
+ :param timeout: the timeout for synch calls
+ :type timeout: int
+ """
+ request = proto.PingRequest()
+ service = RpcService(
+ proto.EventsClientService_Stub,
+ port,
+ 'localhost')
+ logger.info("Pinging a client in port %d..." % port)
+ return service.ping(request, callback=reqcbk, timeout=timeout)
+
+
class EventsClientService(proto.EventsClientService):
"""
Service for receiving signal events in clients.
@@ -270,6 +292,22 @@ class EventsClientService(proto.EventsClientService):
response.status = proto.EventResponse.OK
done.run(response)
+ def ping(self, controller, request, done):
+ """
+ Reply to a ping request.
+
+ :param controller: used to mediate a single method call
+ :type controller: protobuf.socketrpc.controller.SocketRpcController
+ :param request: the request received from the client
+ :type request: leap.common.events.events_pb2.RegisterRequest
+ :param done: callback to be called when done
+ :type done: protobuf.socketrpc.server.Callback
+ """
+ logger.info("Received ping request, sending response.")
+ response = proto.EventResponse()
+ response.status = proto.EventResponse.OK
+ done.run(response)
+
class EventsClientDaemon(daemon.EventsSingletonDaemon):
"""
diff --git a/src/leap/common/events/events.proto b/src/leap/common/events/events.proto
index 79a5564..b844f42 100644
--- a/src/leap/common/events/events.proto
+++ b/src/leap/common/events/events.proto
@@ -17,6 +17,9 @@
package leap.common.events;
option py_generic_services = true;
+
+// These are the events that can be signaled using the events mechanism.
+
enum Event {
CLIENT_SESSION_ID = 1;
CLIENT_UID = 2;
@@ -33,6 +36,10 @@ enum Event {
RAISE_WINDOW = 13;
}
+
+// A SignalRequest is the type of the message sent from one component to request
+// that a signal be sent to every registered component.
+
message SignalRequest {
required Event event = 1;
required string content = 2;
@@ -42,6 +49,10 @@ message SignalRequest {
optional bool error_occurred = 6;
}
+
+// A RegisterRequest message tells the server that a component wants to
+// be signaled whenever a specific event occurs.
+
message RegisterRequest {
required Event event = 1;
required int32 port = 2;
@@ -49,6 +60,10 @@ message RegisterRequest {
required bytes mac = 4;
}
+
+// An UnregisterRequest message tells the server that a component does not
+// want to be signaled when a specific event occurs.
+
message UnregisterRequest {
required Event event = 1;
required int32 port = 2;
@@ -56,6 +71,17 @@ message UnregisterRequest {
required bytes mac = 4;
}
+
+// A PingRequest message is used to find out if a server or component is
+// alive.
+
+message PingRequest {
+}
+
+
+// The EventResponse is the message sent back by server and components after
+// they receive other kinds of requests.
+
message EventResponse {
enum Status {
@@ -68,12 +94,20 @@ message EventResponse {
optional string result = 2;
}
+
+// The EventsServerService is the service provided by the server.
+
service EventsServerService {
+ rpc ping(PingRequest) returns (EventResponse);
rpc register(RegisterRequest) returns (EventResponse);
rpc unregister(UnregisterRequest) returns (EventResponse);
rpc signal(SignalRequest) returns (EventResponse);
}
+
+// EventsComponentService is the service provided by components (clients).
+
service EventsClientService {
+ rpc ping(PingRequest) returns (EventResponse);
rpc signal(SignalRequest) returns (EventResponse);
}
diff --git a/src/leap/common/events/events_pb2.py b/src/leap/common/events/events_pb2.py
index 3b39950..274514c 100644
--- a/src/leap/common/events/events_pb2.py
+++ b/src/leap/common/events/events_pb2.py
@@ -14,7 +14,7 @@ from google.protobuf import descriptor_pb2
DESCRIPTOR = _descriptor.FileDescriptor(
name='events.proto',
package='leap.common.events',
- serialized_pb='\n\x0c\x65vents.proto\x12\x12leap.common.events\"\x97\x01\n\rSignalRequest\x12(\n\x05\x65vent\x18\x01 \x02(\x0e\x32\x19.leap.common.events.Event\x12\x0f\n\x07\x63ontent\x18\x02 \x02(\t\x12\x12\n\nmac_method\x18\x03 \x02(\t\x12\x0b\n\x03mac\x18\x04 \x02(\x0c\x12\x12\n\nenc_method\x18\x05 \x01(\t\x12\x16\n\x0e\x65rror_occurred\x18\x06 \x01(\x08\"j\n\x0fRegisterRequest\x12(\n\x05\x65vent\x18\x01 \x02(\x0e\x32\x19.leap.common.events.Event\x12\x0c\n\x04port\x18\x02 \x02(\x05\x12\x12\n\nmac_method\x18\x03 \x02(\t\x12\x0b\n\x03mac\x18\x04 \x02(\x0c\"l\n\x11UnregisterRequest\x12(\n\x05\x65vent\x18\x01 \x02(\x0e\x32\x19.leap.common.events.Event\x12\x0c\n\x04port\x18\x02 \x02(\x05\x12\x12\n\nmac_method\x18\x03 \x02(\t\x12\x0b\n\x03mac\x18\x04 \x02(\x0c\"\x82\x01\n\rEventResponse\x12\x38\n\x06status\x18\x01 \x02(\x0e\x32(.leap.common.events.EventResponse.Status\x12\x0e\n\x06result\x18\x02 \x01(\t\"\'\n\x06Status\x12\x06\n\x02OK\x10\x01\x12\n\n\x06UNAUTH\x10\x02\x12\t\n\x05\x45RROR\x10\x03*\xe7\x02\n\x05\x45vent\x12\x15\n\x11\x43LIENT_SESSION_ID\x10\x01\x12\x0e\n\nCLIENT_UID\x10\x02\x12\x19\n\x15SOLEDAD_CREATING_KEYS\x10\x03\x12\x1e\n\x1aSOLEDAD_DONE_CREATING_KEYS\x10\x04\x12\x1a\n\x16SOLEDAD_UPLOADING_KEYS\x10\x05\x12\x1f\n\x1bSOLEDAD_DONE_UPLOADING_KEYS\x10\x06\x12\x1c\n\x18SOLEDAD_DOWNLOADING_KEYS\x10\x07\x12!\n\x1dSOLEDAD_DONE_DOWNLOADING_KEYS\x10\x08\x12\x1c\n\x18SOLEDAD_NEW_DATA_TO_SYNC\x10\t\x12\x1a\n\x16SOLEDAD_DONE_DATA_SYNC\x10\n\x12\x17\n\x13UPDATER_NEW_UPDATES\x10\x0b\x12\x19\n\x15UPDATER_DONE_UPDATING\x10\x0c\x12\x10\n\x0cRAISE_WINDOW\x10\r2\x91\x02\n\x13\x45ventsServerService\x12R\n\x08register\x12#.leap.common.events.RegisterRequest\x1a!.leap.common.events.EventResponse\x12V\n\nunregister\x12%.leap.common.events.UnregisterRequest\x1a!.leap.common.events.EventResponse\x12N\n\x06signal\x12!.leap.common.events.SignalRequest\x1a!.leap.common.events.EventResponse2e\n\x13\x45ventsClientService\x12N\n\x06signal\x12!.leap.common.events.SignalRequest\x1a!.leap.common.events.EventResponseB\x03\x90\x01\x01')
+ serialized_pb='\n\x0c\x65vents.proto\x12\x12leap.common.events\"\x97\x01\n\rSignalRequest\x12(\n\x05\x65vent\x18\x01 \x02(\x0e\x32\x19.leap.common.events.Event\x12\x0f\n\x07\x63ontent\x18\x02 \x02(\t\x12\x12\n\nmac_method\x18\x03 \x02(\t\x12\x0b\n\x03mac\x18\x04 \x02(\x0c\x12\x12\n\nenc_method\x18\x05 \x01(\t\x12\x16\n\x0e\x65rror_occurred\x18\x06 \x01(\x08\"j\n\x0fRegisterRequest\x12(\n\x05\x65vent\x18\x01 \x02(\x0e\x32\x19.leap.common.events.Event\x12\x0c\n\x04port\x18\x02 \x02(\x05\x12\x12\n\nmac_method\x18\x03 \x02(\t\x12\x0b\n\x03mac\x18\x04 \x02(\x0c\"l\n\x11UnregisterRequest\x12(\n\x05\x65vent\x18\x01 \x02(\x0e\x32\x19.leap.common.events.Event\x12\x0c\n\x04port\x18\x02 \x02(\x05\x12\x12\n\nmac_method\x18\x03 \x02(\t\x12\x0b\n\x03mac\x18\x04 \x02(\x0c\"\r\n\x0bPingRequest\"\x82\x01\n\rEventResponse\x12\x38\n\x06status\x18\x01 \x02(\x0e\x32(.leap.common.events.EventResponse.Status\x12\x0e\n\x06result\x18\x02 \x01(\t\"\'\n\x06Status\x12\x06\n\x02OK\x10\x01\x12\n\n\x06UNAUTH\x10\x02\x12\t\n\x05\x45RROR\x10\x03*\xe7\x02\n\x05\x45vent\x12\x15\n\x11\x43LIENT_SESSION_ID\x10\x01\x12\x0e\n\nCLIENT_UID\x10\x02\x12\x19\n\x15SOLEDAD_CREATING_KEYS\x10\x03\x12\x1e\n\x1aSOLEDAD_DONE_CREATING_KEYS\x10\x04\x12\x1a\n\x16SOLEDAD_UPLOADING_KEYS\x10\x05\x12\x1f\n\x1bSOLEDAD_DONE_UPLOADING_KEYS\x10\x06\x12\x1c\n\x18SOLEDAD_DOWNLOADING_KEYS\x10\x07\x12!\n\x1dSOLEDAD_DONE_DOWNLOADING_KEYS\x10\x08\x12\x1c\n\x18SOLEDAD_NEW_DATA_TO_SYNC\x10\t\x12\x1a\n\x16SOLEDAD_DONE_DATA_SYNC\x10\n\x12\x17\n\x13UPDATER_NEW_UPDATES\x10\x0b\x12\x19\n\x15UPDATER_DONE_UPDATING\x10\x0c\x12\x10\n\x0cRAISE_WINDOW\x10\r2\xdd\x02\n\x13\x45ventsServerService\x12J\n\x04ping\x12\x1f.leap.common.events.PingRequest\x1a!.leap.common.events.EventResponse\x12R\n\x08register\x12#.leap.common.events.RegisterRequest\x1a!.leap.common.events.EventResponse\x12V\n\nunregister\x12%.leap.common.events.UnregisterRequest\x1a!.leap.common.events.EventResponse\x12N\n\x06signal\x12!.leap.common.events.SignalRequest\x1a!.leap.common.events.EventResponse2\xb1\x01\n\x13\x45ventsClientService\x12J\n\x04ping\x12\x1f.leap.common.events.PingRequest\x1a!.leap.common.events.EventResponse\x12N\n\x06signal\x12!.leap.common.events.SignalRequest\x1a!.leap.common.events.EventResponseB\x03\x90\x01\x01')
_EVENT = _descriptor.EnumDescriptor(
name='Event',
@@ -77,8 +77,8 @@ _EVENT = _descriptor.EnumDescriptor(
],
containing_type=None,
options=None,
- serialized_start=542,
- serialized_end=901,
+ serialized_start=557,
+ serialized_end=916,
)
Event = enum_type_wrapper.EnumTypeWrapper(_EVENT)
@@ -118,8 +118,8 @@ _EVENTRESPONSE_STATUS = _descriptor.EnumDescriptor(
],
containing_type=None,
options=None,
- serialized_start=500,
- serialized_end=539,
+ serialized_start=515,
+ serialized_end=554,
)
@@ -284,6 +284,27 @@ _UNREGISTERREQUEST = _descriptor.Descriptor(
)
+_PINGREQUEST = _descriptor.Descriptor(
+ name='PingRequest',
+ full_name='leap.common.events.PingRequest',
+ filename=None,
+ file=DESCRIPTOR,
+ containing_type=None,
+ fields=[
+ ],
+ extensions=[
+ ],
+ nested_types=[],
+ enum_types=[
+ ],
+ options=None,
+ is_extendable=False,
+ extension_ranges=[],
+ serialized_start=408,
+ serialized_end=421,
+)
+
+
_EVENTRESPONSE = _descriptor.Descriptor(
name='EventResponse',
full_name='leap.common.events.EventResponse',
@@ -315,8 +336,8 @@ _EVENTRESPONSE = _descriptor.Descriptor(
options=None,
is_extendable=False,
extension_ranges=[],
- serialized_start=409,
- serialized_end=539,
+ serialized_start=424,
+ serialized_end=554,
)
_SIGNALREQUEST.fields_by_name['event'].enum_type = _EVENT
@@ -327,6 +348,7 @@ _EVENTRESPONSE_STATUS.containing_type = _EVENTRESPONSE
DESCRIPTOR.message_types_by_name['SignalRequest'] = _SIGNALREQUEST
DESCRIPTOR.message_types_by_name['RegisterRequest'] = _REGISTERREQUEST
DESCRIPTOR.message_types_by_name['UnregisterRequest'] = _UNREGISTERREQUEST
+DESCRIPTOR.message_types_by_name['PingRequest'] = _PINGREQUEST
DESCRIPTOR.message_types_by_name['EventResponse'] = _EVENTRESPONSE
@@ -351,6 +373,13 @@ class UnregisterRequest(_message.Message):
# @@protoc_insertion_point(class_scope:leap.common.events.UnregisterRequest)
+class PingRequest(_message.Message):
+ __metaclass__ = _reflection.GeneratedProtocolMessageType
+ DESCRIPTOR = _PINGREQUEST
+
+ # @@protoc_insertion_point(class_scope:leap.common.events.PingRequest)
+
+
class EventResponse(_message.Message):
__metaclass__ = _reflection.GeneratedProtocolMessageType
DESCRIPTOR = _EVENTRESPONSE
@@ -368,13 +397,22 @@ _EVENTSSERVERSERVICE = _descriptor.ServiceDescriptor(
file=DESCRIPTOR,
index=0,
options=None,
- serialized_start=904,
- serialized_end=1177,
+ serialized_start=919,
+ serialized_end=1268,
methods=[
_descriptor.MethodDescriptor(
+ name='ping',
+ full_name='leap.common.events.EventsServerService.ping',
+ index=0,
+ containing_service=None,
+ input_type=_PINGREQUEST,
+ output_type=_EVENTRESPONSE,
+ options=None,
+ ),
+ _descriptor.MethodDescriptor(
name='register',
full_name='leap.common.events.EventsServerService.register',
- index=0,
+ index=1,
containing_service=None,
input_type=_REGISTERREQUEST,
output_type=_EVENTRESPONSE,
@@ -383,7 +421,7 @@ _EVENTSSERVERSERVICE = _descriptor.ServiceDescriptor(
_descriptor.MethodDescriptor(
name='unregister',
full_name='leap.common.events.EventsServerService.unregister',
- index=1,
+ index=2,
containing_service=None,
input_type=_UNREGISTERREQUEST,
output_type=_EVENTRESPONSE,
@@ -392,7 +430,7 @@ _EVENTSSERVERSERVICE = _descriptor.ServiceDescriptor(
_descriptor.MethodDescriptor(
name='signal',
full_name='leap.common.events.EventsServerService.signal',
- index=2,
+ index=3,
containing_service=None,
input_type=_SIGNALREQUEST,
output_type=_EVENTRESPONSE,
@@ -417,13 +455,22 @@ _EVENTSCLIENTSERVICE = _descriptor.ServiceDescriptor(
file=DESCRIPTOR,
index=1,
options=None,
- serialized_start=1179,
- serialized_end=1280,
+ serialized_start=1271,
+ serialized_end=1448,
methods=[
_descriptor.MethodDescriptor(
+ name='ping',
+ full_name='leap.common.events.EventsClientService.ping',
+ index=0,
+ containing_service=None,
+ input_type=_PINGREQUEST,
+ output_type=_EVENTRESPONSE,
+ options=None,
+ ),
+ _descriptor.MethodDescriptor(
name='signal',
full_name='leap.common.events.EventsClientService.signal',
- index=0,
+ index=1,
containing_service=None,
input_type=_SIGNALREQUEST,
output_type=_EVENTRESPONSE,
diff --git a/src/leap/common/events/server.py b/src/leap/common/events/server.py
index 8a0d4e5..daccc61 100644
--- a/src/leap/common/events/server.py
+++ b/src/leap/common/events/server.py
@@ -48,6 +48,13 @@ SERVER_PORT = 8090
registered_clients = {}
+class PortAlreadyTaken(Exception):
+ """
+ Raised when trying to open a server in a port that is already taken.
+ """
+ pass
+
+
def ensure_server(port=SERVER_PORT):
"""
Make sure the server is running on the given port.
@@ -60,18 +67,51 @@ def ensure_server(port=SERVER_PORT):
:return: the daemon instance or nothing
:rtype: EventsServerDaemon or None
+
+ :raise PortAlreadyTaken: Raised if C{port} is already taken by something
+ that is not an events server.
"""
try:
+ # check if port is available
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(('localhost', port))
s.close()
- logger.info('Server is already running on port %d.', port)
- return None
+ # port is taken, check if there's a server running there
+ response = ping(port)
+ if response is not None and response.status == proto.EventResponse.OK:
+ logger.info('A server is already running on port %d.', port)
+ return None
+ # port is taken, and not by an events server
+ logger.info('Port %d is taken by something not an events server.', port)
+ raise PortAlreadyTaken(port)
except socket.error:
+ # port is available, run a server
logger.info('Launching server on port %d.', port)
return EventsServerDaemon.ensure(port)
+def ping(port=SERVER_PORT, reqcbk=None, timeout=1000):
+ """
+ Ping the server.
+
+ :param port: the port in which server should be listening
+ :type port: int
+ :param reqcbk: a callback to be called when a response from server is
+ received
+ :type reqcbk: function
+ callback(leap.common.events.events_pb2.EventResponse)
+ :param timeout: the timeout for synch calls
+ :type timeout: int
+ """
+ request = proto.PingRequest()
+ service = RpcService(
+ proto.EventsServerService_Stub,
+ port,
+ 'localhost')
+ logger.info("Pinging server in port %d..." % port)
+ return service.ping(request, callback=reqcbk, timeout=timeout)
+
+
class EventsServerService(proto.EventsServerService):
"""
Service for receiving events in clients.
@@ -156,6 +196,22 @@ class EventsServerService(proto.EventsServerService):
response.status = proto.EventResponse.OK
done.run(response)
+ def ping(self, controller, request, done):
+ """
+ Reply to a ping request.
+
+ :param controller: used to mediate a single method call
+ :type controller: protobuf.socketrpc.controller.SocketRpcController
+ :param request: the request received from the client
+ :type request: leap.common.events.events_pb2.RegisterRequest
+ :param done: callback to be called when done
+ :type done: protobuf.socketrpc.server.Callback
+ """
+ logger.info("Received ping request, sending response.")
+ response = proto.EventResponse()
+ response.status = proto.EventResponse.OK
+ done.run(response)
+
class EventsServerDaemon(daemon.EventsSingletonDaemon):
"""