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https://github.com/markqvist/LXMF.git
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Stamp cost API functions and multi-process stamp generation on Android
This commit is contained in:
Mark Qvist
parent
4b5e27a5e2
commit
0d76eee6cd
13
LXMF/LXMF.py
13
LXMF/LXMF.py
@ -85,6 +85,8 @@ import RNS.vendor.umsgpack as msgpack
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def display_name_from_app_data(app_data=None):
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if app_data == None:
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return None
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elif len(app_data) == 0:
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return None
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else:
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# Version 0.5.0+ announce format
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if (app_data[0] >= 0x90 and app_data[0] <= 0x9f) or app_data[0] == 0xdc:
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@ -93,7 +95,16 @@ def display_name_from_app_data(app_data=None):
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if len(peer_data) < 1:
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return None
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else:
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return peer_data[0].decode("utf-8")
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dn = peer_data[0]
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if dn == None:
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return None
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else:
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try:
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decoded = dn.decode("utf-8")
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return decoded
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except:
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RNS.log("Could not decode display name in included announce data. The contained exception was: {e}", RNS.LOG_ERROR)
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return None
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# Original announce format
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else:
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@ -173,9 +173,9 @@ class LXMRouter:
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job_thread.setDaemon(True)
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job_thread.start()
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def announce(self, destination_hash):
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def announce(self, destination_hash, attached_interface=None):
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if destination_hash in self.delivery_destinations:
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self.delivery_destinations[destination_hash].announce(app_data=self.get_announce_app_data(destination_hash))
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self.delivery_destinations[destination_hash].announce(app_data=self.get_announce_app_data(destination_hash), attached_interface=attached_interface)
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def announce_propagation_node(self):
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def delayed_announce():
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@ -202,7 +202,6 @@ class LXMRouter:
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delivery_destination.set_packet_callback(self.delivery_packet)
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delivery_destination.set_link_established_callback(self.delivery_link_established)
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delivery_destination.display_name = display_name
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delivery_destination.stamp_cost = stamp_cost
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if self.enforce_ratchets:
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delivery_destination.enforce_ratchets()
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@ -214,11 +213,38 @@ class LXMRouter:
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delivery_destination.set_default_app_data(get_app_data)
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self.delivery_destinations[delivery_destination.hash] = delivery_destination
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self.set_inbound_stamp_cost(delivery_destination.hash, stamp_cost)
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return delivery_destination
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def register_delivery_callback(self, callback):
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self.__delivery_callback = callback
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def set_inbound_stamp_cost(self, destination_hash, stamp_cost):
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if destination_hash in self.delivery_destinations:
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delivery_destination = self.delivery_destinations[destination_hash]
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if stamp_cost == None:
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delivery_destination.stamp_cost = None
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return True
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elif type(stamp_cost) == int:
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if stamp_cost < 1:
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delivery_destination.stamp_cost = None
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elif stamp_cost < 255:
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delivery_destination.stamp_cost = stamp_cost
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else:
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return False
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return True
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return False
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def get_outbound_stamp_cost(self, destination_hash):
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if destination_hash in self.outbound_stamp_costs:
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stamp_cost = self.outbound_stamp_costs[destination_hash][1]
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return stamp_cost
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else:
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return None
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def set_outbound_propagation_node(self, destination_hash):
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if len(destination_hash) != RNS.Identity.TRUNCATED_HASHLENGTH//8 or type(destination_hash) != bytes:
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raise ValueError("Invalid destination hash for outbound propagation node")
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@ -1020,7 +1046,13 @@ class LXMRouter:
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time.sleep(0.1)
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self.pending_outbound.append(lxmessage)
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self.process_outbound()
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if lxmessage.defer_stamp and lxmessage.stamp_cost == None:
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RNS.log(f"Deferred stamp generation was requested for {lxmessage}, but no stamp is required, processing immediately", RNS.LOG_DEBUG)
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lxmessage.defer_stamp = False
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if not lxmessage.defer_stamp:
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self.process_outbound()
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def get_outbound_progress(self, lxm_hash):
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for lxm in self.pending_outbound:
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@ -1029,6 +1061,13 @@ class LXMRouter:
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return None
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def get_outbound_lxm_stamp_cost(self, lxm_hash):
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for lxm in self.pending_outbound:
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if lxm.hash == lxm_hash:
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return lxm.stamp_cost
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return None
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### Message Routing & Delivery ########################
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#######################################################
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@ -1440,6 +1479,18 @@ class LXMRouter:
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self.pending_outbound.remove(lxmessage)
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else:
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RNS.log("Starting outbound processing for "+str(lxmessage)+" to "+RNS.prettyhexrep(lxmessage.get_destination().hash), RNS.LOG_DEBUG)
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# Handle potentially deferred stamp generation
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if lxmessage.defer_stamp and lxmessage.stamp == None:
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RNS.log(f"Generating deferred stamp for {lxmessage} now", RNS.LOG_DEBUG)
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lxmessage.stamp = lxmessage.get_stamp()
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lxmessage.defer_stamp = False
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lxmessage.packed = None
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lxmessage.pack()
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if lxmessage.progress == None or lxmessage.progress < 0.01:
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lxmessage.progress = 0.01
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# Outbound handling for opportunistic messages
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if lxmessage.method == LXMessage.OPPORTUNISTIC:
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if lxmessage.delivery_attempts <= LXMRouter.MAX_DELIVERY_ATTEMPTS:
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@ -10,13 +10,13 @@ import multiprocessing
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from .LXMF import APP_NAME
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class LXMessage:
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DRAFT = 0x00
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GENERATING = 0x00
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OUTBOUND = 0x01
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SENDING = 0x02
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SENT = 0x04
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DELIVERED = 0x08
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FAILED = 0xFF
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states = [DRAFT, OUTBOUND, SENDING, SENT, DELIVERED, FAILED]
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states = [GENERATING, OUTBOUND, SENDING, SENT, DELIVERED, FAILED]
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UNKNOWN = 0x00
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PACKET = 0x01
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@ -126,7 +126,8 @@ class LXMessage:
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self.stamp = None
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self.stamp_cost = stamp_cost
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self.stamp_valid = False
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self.state = LXMessage.DRAFT
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self.defer_stamp = False
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self.state = LXMessage.GENERATING
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self.method = LXMessage.UNKNOWN
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self.progress = 0.0
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self.rssi = None
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@ -277,53 +278,128 @@ class LXMessage:
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start_time = time.time()
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total_rounds = 0
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stop_event = multiprocessing.Event()
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result_queue = multiprocessing.Queue(maxsize=1)
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rounds_queue = multiprocessing.Queue()
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def job(stop_event):
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terminated = False
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rounds = 0
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stamp = os.urandom(256//8)
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while not LXMessage.stamp_valid(stamp, self.stamp_cost, workblock):
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if stop_event.is_set():
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break
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if timeout != None and rounds % 10000 == 0:
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if time.time() > start_time + timeout:
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RNS.log(f"Stamp generation for {self} timed out", RNS.LOG_ERROR)
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return None
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if not RNS.vendor.platformutils.is_android():
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stop_event = multiprocessing.Event()
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result_queue = multiprocessing.Queue(maxsize=1)
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rounds_queue = multiprocessing.Queue()
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def job(stop_event):
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terminated = False
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rounds = 0
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stamp = os.urandom(256//8)
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rounds += 1
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while not LXMessage.stamp_valid(stamp, self.stamp_cost, workblock):
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if stop_event.is_set():
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break
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rounds_queue.put(rounds)
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if not stop_event.is_set():
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result_queue.put(stamp)
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if timeout != None and rounds % 10000 == 0:
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if time.time() > start_time + timeout:
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RNS.log(f"Stamp generation for {self} timed out", RNS.LOG_ERROR)
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return None
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job_procs = []
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jobs = multiprocessing.cpu_count()
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for _ in range(jobs):
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process = multiprocessing.Process(target=job, kwargs={"stop_event": stop_event},)
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job_procs.append(process)
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process.start()
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stamp = os.urandom(256//8)
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rounds += 1
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stamp = result_queue.get()
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stop_event.set()
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rounds_queue.put(rounds)
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if not stop_event.is_set():
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result_queue.put(stamp)
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for j in range(jobs):
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process = job_procs[j]
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process.join()
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total_rounds += rounds_queue.get()
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job_procs = []
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jobs = multiprocessing.cpu_count()
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for _ in range(jobs):
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process = multiprocessing.Process(target=job, kwargs={"stop_event": stop_event},)
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job_procs.append(process)
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process.start()
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duration = time.time() - start_time
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rounds = total_rounds
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stamp = result_queue.get()
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stop_event.set()
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for j in range(jobs):
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process = job_procs[j]
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process.join()
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total_rounds += rounds_queue.get()
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duration = time.time() - start_time
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rounds = total_rounds
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else:
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# Semaphore support is flaky to non-existent on
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# Android, so we need to manually dispatch and
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# manage workloads here, while periodically
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# checking in on the progress.
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use_nacl = False
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try:
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import nacl.encoding
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import nacl.hash
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use_nacl = True
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except:
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pass
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def full_hash(m):
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if use_nacl:
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return nacl.hash.sha256(m, encoder=nacl.encoding.RawEncoder)
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else:
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return RNS.Identity.full_hash(m)
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def sv(s, c, w):
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target = 0b1<<256-c
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m = w+s
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result = full_hash(m)
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if int.from_bytes(result, byteorder="big") > target:
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return False
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else:
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return True
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stamp = None
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wm = multiprocessing.Manager()
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jobs = multiprocessing.cpu_count()
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RNS.log(f"Dispatching {jobs} workers for stamp generation...") # TODO: Remove
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results_dict = wm.dict()
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while stamp == None:
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job_procs = []
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def job(procnum=None, results_dict=None, wb=None):
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RNS.log(f"Worker {procnum} starting...") # TODO: Remove
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rounds = 0
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stamp = os.urandom(256//8)
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while not sv(stamp, self.stamp_cost, wb):
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if rounds >= 500:
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stamp = None
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RNS.log(f"Worker {procnum} found no result in {rounds} rounds") # TODO: Remove
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break
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stamp = os.urandom(256//8)
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rounds += 1
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results_dict[procnum] = [stamp, rounds]
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for pnum in range(jobs):
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process = multiprocessing.Process(target=job, kwargs={"procnum":pnum, "results_dict": results_dict, "wb": workblock},)
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job_procs.append(process)
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process.start()
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for process in job_procs:
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process.join()
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for j in results_dict:
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r = results_dict[j]
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RNS.log(f"Result from {r}: {r[1]} rounds, stamp: {r[0]}") # TODO: Remove
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total_rounds += r[1]
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if r[0] != None:
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stamp = r[0]
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RNS.log(f"Found stamp: {stamp}") # TODO: Remove
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duration = time.time() - start_time
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rounds = total_rounds
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# TODO: Remove stats output
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RNS.log(f"Stamp generated in {RNS.prettytime(duration)} / {rounds} rounds", RNS.LOG_DEBUG)
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RNS.log(f"Rounds per second {int(rounds/duration)}", RNS.LOG_DEBUG)
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RNS.log(f"Stamp: {RNS.hexrep(stamp)}", RNS.LOG_DEBUG)
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RNS.log(f"Resulting hash: {RNS.hexrep(RNS.Identity.full_hash(workblock+stamp))}", RNS.LOG_DEBUG)
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# RNS.log(f"Rounds per second {int(rounds/duration)}", RNS.LOG_DEBUG)
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# RNS.log(f"Stamp: {RNS.hexrep(stamp)}", RNS.LOG_DEBUG)
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# RNS.log(f"Resulting hash: {RNS.hexrep(RNS.Identity.full_hash(workblock+stamp))}", RNS.LOG_DEBUG)
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###########################
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return stamp
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@ -344,9 +420,11 @@ class LXMessage:
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hashed_part += msgpack.packb(self.payload)
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self.hash = RNS.Identity.full_hash(hashed_part)
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self.message_id = self.hash
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self.stamp = self.get_stamp()
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if self.stamp != None:
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self.payload.append(self.stamp)
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if not self.defer_stamp:
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self.stamp = self.get_stamp()
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if self.stamp != None:
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self.payload.append(self.stamp)
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signed_part = b""
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signed_part += hashed_part
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@ -39,7 +39,7 @@ r = RNS.Reticulum()
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router = LXMF.LXMRouter(storagepath="./tmp1", enforce_stamps=enforce_stamps)
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identity = RNS.Identity()
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my_lxmf_destination = router.register_delivery_identity(identity, stamp_cost=required_stamp_cost)
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my_lxmf_destination = router.register_delivery_identity(identity, display_name="Anonymous Peer", stamp_cost=required_stamp_cost)
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router.register_delivery_callback(delivery_callback)
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RNS.log("Ready to receive on: "+RNS.prettyhexrep(my_lxmf_destination.hash))
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