Implemented resources
This commit is contained in:
Mark Qvist
parent
19d9b1a4a5
commit
de8d9cf722
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@ -2,7 +2,7 @@ header types
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-----------------
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type 1 00 Two byte header, one 10 byte address field
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type 2 01 Two byte header, two 10 byte address fields
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type 3 10 Two byte header, one 10 byte address field, used for link request proofs
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type 3 10 Reserved
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type 4 11 Reserved for extended header format
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@ -201,7 +201,7 @@ class Destination:
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# Application specific data can be added to the announce.
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def announce(self,app_data=None):
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destination_hash = self.hash
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random_hash = self.identity.getRandomHash()
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random_hash = RNS.Identity.getRandomHash()
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signed_data = self.hash+self.identity.getPublicKey()+random_hash
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if app_data != None:
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@ -4,7 +4,7 @@ import os
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import RNS
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import time
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import atexit
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import cPickle
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import vendor.umsgpack as umsgpack
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from cryptography.hazmat.primitives import hashes
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from cryptography.hazmat.backends import default_backend
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from cryptography.hazmat.primitives import serialization
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@ -61,7 +61,7 @@ class Identity:
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def saveKnownDestinations():
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RNS.log("Saving known destinations to storage...", RNS.LOG_VERBOSE)
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file = open(RNS.Reticulum.storagepath+"/known_destinations","w")
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cPickle.dump(Identity.known_destinations, file)
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umsgpack.dump(Identity.known_destinations, file)
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file.close()
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RNS.log("Done saving known destinations to storage", RNS.LOG_VERBOSE)
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@ -69,7 +69,7 @@ class Identity:
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def loadKnownDestinations():
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if os.path.isfile(RNS.Reticulum.storagepath+"/known_destinations"):
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file = open(RNS.Reticulum.storagepath+"/known_destinations","r")
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Identity.known_destinations = cPickle.load(file)
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Identity.known_destinations = umsgpack.load(file)
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file.close()
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RNS.log("Loaded "+str(len(Identity.known_destinations))+" known destinations from storage", RNS.LOG_VERBOSE)
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else:
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@ -89,6 +89,10 @@ class Identity:
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return digest.finalize()[:10]
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@staticmethod
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def getRandomHash():
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return Identity.truncatedHash(os.urandom(10))
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@staticmethod
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def validateAnnounce(packet):
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if packet.packet_type == RNS.Packet.ANNOUNCE:
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@ -276,8 +280,3 @@ class Identity:
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proof = RNS.Packet(destination, proof_data, RNS.Packet.PROOF)
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proof.send()
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def getRandomHash(self):
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return self.truncatedHash(os.urandom(10))
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113
RNS/Link.py
113
RNS/Link.py
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@ -14,15 +14,21 @@ class LinkCallbacks:
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self.link_established = None
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self.packet = None
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self.resource_started = None
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self.resource_completed = None
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self.resource_concluded = None
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class Link:
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CURVE = ec.SECP256R1()
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ECPUBSIZE = 91
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BLOCKSIZE = 16
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PENDING = 0x00
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ACTIVE = 0x01
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ACCEPT_NONE = 0x00
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ACCEPT_APP = 0x01
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ACCEPT_ALL = 0x02
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resource_strategies = [ACCEPT_NONE, ACCEPT_APP, ACCEPT_ALL]
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@staticmethod
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def validateRequest(owner, data, packet):
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if len(data) == (Link.ECPUBSIZE):
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@ -40,6 +46,7 @@ class Link:
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except Exception as e:
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RNS.log("Validating link request failed", RNS.LOG_VERBOSE)
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traceback.print_exc()
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return None
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else:
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@ -50,7 +57,11 @@ class Link:
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def __init__(self, destination=None, owner=None, peer_pub_bytes = None):
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if destination != None and destination.type != RNS.Destination.SINGLE:
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raise TypeError("Links can only be established to the \"single\" destination type")
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self.rtt = None
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self.callbacks = LinkCallbacks()
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self.resource_strategy = Link.ACCEPT_NONE
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self.outgoing_resources = []
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self.incoming_resources = []
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self.status = Link.PENDING
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self.type = RNS.Destination.LINK
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self.owner = owner
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@ -109,7 +120,7 @@ class Link:
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signature = self.owner.identity.sign(signed_data)
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proof_data = self.pub_bytes+signature
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proof = RNS.Packet(self, proof_data, packet_type=RNS.Packet.PROOF, header_type=RNS.Packet.HEADER_3)
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proof = RNS.Packet(self, proof_data, packet_type=RNS.Packet.PROOF, context=RNS.Packet.LRPROOF)
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proof.send()
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def validateProof(self, packet):
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@ -122,9 +133,9 @@ class Link:
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self.handshake()
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self.attached_interface = packet.receiving_interface
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RNS.Transport.activateLink(self)
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RNS.log("Link "+str(self)+" established with "+str(self.destination), RNS.LOG_VERBOSE)
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if self.callbacks.link_established != None:
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self.callbacks.link_established(self)
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RNS.log("Link "+str(self)+" established with "+str(self.destination), RNS.LOG_VERBOSE)
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else:
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RNS.log("Invalid link proof signature received by "+str(self), RNS.LOG_VERBOSE)
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@ -139,9 +150,60 @@ class Link:
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if packet.receiving_interface != self.attached_interface:
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RNS.log("Link-associated packet received on unexpected interface! Someone might be trying to manipulate your communication!", RNS.LOG_ERROR)
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else:
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plaintext = self.decrypt(packet.data)
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if (self.callbacks.packet != None):
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self.callbacks.packet(plaintext, packet)
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if packet.packet_type == RNS.Packet.DATA:
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if packet.context == RNS.Packet.NONE:
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plaintext = self.decrypt(packet.data)
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if (self.callbacks.packet != None):
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self.callbacks.packet(plaintext, packet)
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elif packet.context == RNS.Packet.RESOURCE_ADV:
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packet.plaintext = self.decrypt(packet.data)
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if self.resource_strategy == Link.ACCEPT_NONE:
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pass
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elif self.resource_strategy == Link.ACCEPT_APP:
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if self.callbacks.resource != None:
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self.callbacks.resource(packet)
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elif self.resource_strategy == Link.ACCEPT_ALL:
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RNS.Resource.accept(packet, self.callbacks.resource_concluded)
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elif packet.context == RNS.Packet.RESOURCE_REQ:
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plaintext = self.decrypt(packet.data)
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if ord(plaintext[:1]) == RNS.Resource.HASHMAP_IS_EXHAUSTED:
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resource_hash = plaintext[1+RNS.Resource.MAPHASH_LEN:RNS.Identity.HASHLENGTH/8+1+RNS.Resource.MAPHASH_LEN]
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else:
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resource_hash = plaintext[1:RNS.Identity.HASHLENGTH/8+1]
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for resource in self.outgoing_resources:
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if resource.hash == resource_hash:
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resource.request(plaintext)
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elif packet.context == RNS.Packet.RESOURCE_HMU:
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plaintext = self.decrypt(packet.data)
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resource_hash = plaintext[:RNS.Identity.HASHLENGTH/8]
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for resource in self.incoming_resources:
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if resource_hash == resource.hash:
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resource.hashmap_update_packet(plaintext)
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elif packet.context == RNS.Packet.RESOURCE_ICL:
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plaintext = self.decrypt(packet.data)
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resource_hash = plaintext[:RNS.Identity.HASHLENGTH/8]
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for resource in self.incoming_resources:
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if resource_hash == resource.hash:
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resource.cancel()
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# TODO: find the most efficient way to allow multiple
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# transfers at the same time, sending resource hash on
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# each packet is a huge overhead
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elif packet.context == RNS.Packet.RESOURCE:
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for resource in self.incoming_resources:
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resource.receive_part(packet)
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elif packet.packet_type == RNS.Packet.PROOF:
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if packet.context == RNS.Packet.RESOURCE_PRF:
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resource_hash = packet.data[0:RNS.Identity.HASHLENGTH/8]
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for resource in self.outgoing_resources:
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if resource_hash == resource.hash:
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resource.validateProof(packet.data)
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def encrypt(self, plaintext):
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if self.__encryption_disabled:
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@ -170,11 +232,43 @@ class Link:
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def packet_callback(self, callback):
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self.callbacks.packet = callback
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# Called when an incoming resource transfer is started
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def resource_started_callback(self, callback):
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self.callbacks.resource_started = callback
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def resource_completed_callback(self, callback):
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self.callbacks.resource_completed = callback
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# Called when a resource transfer is concluded
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def resource_concluded_callback(self, callback):
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self.callbacks.resource_concluded = callback
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def setResourceStrategy(self, resource_strategy):
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if not resource_strategy in Link.resource_strategies:
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raise TypeError("Unsupported resource strategy")
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else:
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self.resource_strategy = resource_strategy
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def register_outgoing_resource(self, resource):
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self.outgoing_resources.append(resource)
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def register_incoming_resource(self, resource):
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self.incoming_resources.append(resource)
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def cancel_outgoing_resource(self, resource):
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if resource in self.outgoing_resources:
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self.outgoing_resources.remove(resource)
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else:
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RNS.log("Attempt to cancel a non-existing incoming resource", RNS.LOG_ERROR)
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def cancel_incoming_resource(self, resource):
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if resource in self.incoming_resources:
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self.incoming_resources.remove(resource)
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else:
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RNS.log("Attempt to cancel a non-existing incoming resource", RNS.LOG_ERROR)
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def ready_for_new_resource(self):
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if len(self.outgoing_resources) > 0:
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return False
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else:
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return True
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def disableEncryption(self):
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if (RNS.Reticulum.should_allow_unencrypted()):
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@ -185,5 +279,8 @@ class Link:
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RNS.log("Shutting down Reticulum now!", RNS.LOG_CRITICAL)
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RNS.panic()
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def encryption_disabled(self):
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return self.__encryption_disabled
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def __str__(self):
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return RNS.prettyhexrep(self.link_id)
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348
RNS/Packet.py
348
RNS/Packet.py
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@ -2,6 +2,198 @@ import struct
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import time
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import RNS
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class Packet:
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# Constants
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DATA = 0x00
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ANNOUNCE = 0x01
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LINKREQUEST = 0x02
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PROOF = 0x03
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types = [DATA, ANNOUNCE, LINKREQUEST, PROOF]
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HEADER_1 = 0x00 # Normal header format
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HEADER_2 = 0x01 # Header format used for link packets in transport
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HEADER_3 = 0x02 # Reserved
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HEADER_4 = 0x03 # Reserved
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header_types = [HEADER_1, HEADER_2, HEADER_3, HEADER_4]
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# Context types
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NONE = 0x00
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RESOURCE = 0x01
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RESOURCE_ADV = 0x02
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RESOURCE_REQ = 0x03
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RESOURCE_HMU = 0x04
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RESOURCE_PRF = 0x05
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RESOURCE_ICL = 0x06
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RESOURCE_RCL = 0x07
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REQUEST = 0x08
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RESPONSE = 0x09
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COMMAND = 0x0A
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COMMAND_STAT = 0x0B
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LRPROOF = 0xFF
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HEADER_MAXSIZE = 23
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# Defaults
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TIMEOUT = 60
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def __init__(self, destination, data, packet_type = DATA, context = NONE, transport_type = RNS.Transport.BROADCAST, header_type = HEADER_1, transport_id = None):
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if destination != None:
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if transport_type == None:
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transport_type = RNS.Transport.BROADCAST
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self.header_type = header_type
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self.packet_type = packet_type
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self.transport_type = transport_type
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self.context = context
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self.hops = 0;
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self.destination = destination
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self.transport_id = transport_id
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self.data = data
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self.flags = self.getPackedFlags()
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self.MTU = RNS.Reticulum.MTU
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self.raw = None
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self.packed = False
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self.sent = False
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self.receipt = None
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self.fromPacked = False
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else:
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self.raw = data
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self.packed = True
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self.fromPacked = True
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self.sent_at = None
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self.packet_hash = None
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def getPackedFlags(self):
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if self.context == Packet.LRPROOF:
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packed_flags = (self.header_type << 6) | (self.transport_type << 4) | RNS.Destination.LINK | self.packet_type
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else:
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packed_flags = (self.header_type << 6) | (self.transport_type << 4) | (self.destination.type << 2) | self.packet_type
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return packed_flags
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def pack(self):
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self.header = ""
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self.header += struct.pack("!B", self.flags)
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self.header += struct.pack("!B", self.hops)
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if self.context == Packet.LRPROOF:
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self.header += self.destination.link_id
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self.ciphertext = self.data
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else:
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if self.header_type == Packet.HEADER_1:
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self.header += self.destination.hash
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if self.packet_type == Packet.ANNOUNCE:
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# Announce packets are not encrypted
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self.ciphertext = self.data
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elif self.packet_type == Packet.PROOF and self.context == Packet.RESOURCE_PRF:
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# Resource proofs are not encrypted
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self.ciphertext = self.data
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elif self.context == Packet.RESOURCE:
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# A resource takes care of symmetric
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# encryption by itself
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self.ciphertext = self.data
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else:
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# In all other cases, we encrypt the packet
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# with the destination's public key
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self.ciphertext = self.destination.encrypt(self.data)
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if self.header_type == Packet.HEADER_2:
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if t_destination != None:
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self.header += self.t_destination
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else:
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raise IOError("Packet with header type 2 must have a transport ID")
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self.header += chr(self.context)
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self.raw = self.header + self.ciphertext
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if len(self.raw) > self.MTU:
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raise IOError("Packet size of "+str(len(self.raw))+" exceeds MTU of "+str(self.MTU)+" bytes")
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self.packed = True
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def unpack(self):
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self.flags = ord(self.raw[0])
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self.hops = ord(self.raw[1])
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self.header_type = (self.flags & 0b11000000) >> 6
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self.transport_type = (self.flags & 0b00110000) >> 4
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self.destination_type = (self.flags & 0b00001100) >> 2
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self.packet_type = (self.flags & 0b00000011)
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if self.header_type == Packet.HEADER_2:
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self.transport_id = self.raw[2:12]
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self.destination_hash = self.raw[12:22]
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self.context = ord(self.raw[22:23])
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self.data = self.raw[23:]
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else:
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self.transport_id = None
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self.destination_hash = self.raw[2:12]
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self.context = ord(self.raw[12:13])
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self.data = self.raw[13:]
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self.packed = False
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def send(self):
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if not self.sent:
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if not self.packed:
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self.pack()
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if RNS.Transport.outbound(self):
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return self.receipt
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else:
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# TODO: Don't raise error here, handle gracefully
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raise IOError("Packet could not be sent! Do you have any outbound interfaces configured?")
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else:
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raise IOError("Packet was already sent")
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def resend(self):
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if self.sent:
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Transport.outbound(self.raw)
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else:
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raise IOError("Packet was not sent yet")
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def prove(self, destination=None):
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if self.fromPacked and self.destination:
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if self.destination.identity and self.destination.identity.prv:
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self.destination.identity.prove(self, destination)
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# Generates a special destination that allows Reticulum
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# to direct the proof back to the proved packet's sender
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def generateProofDestination(self):
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return ProofDestination(self)
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def validateProofPacket(self, proof_packet):
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return self.receipt.validateProofPacket(proof_packet)
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def validateProof(self, proof):
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return self.receipt.validateProof(proof)
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def updateHash(self):
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self.packet_hash = self.getHash()
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def getHash(self):
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return RNS.Identity.fullHash(self.getHashablePart())
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def getHashablePart(self):
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return self.raw[0:1]+self.raw[2:]
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class ProofDestination:
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def __init__(self, packet):
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self.hash = packet.getHash()[:10];
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self.type = RNS.Destination.SINGLE
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def encrypt(self, plaintext):
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return plaintext
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class PacketReceipt:
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# Receipt status constants
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FAILED = 0x00
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@ -90,158 +282,4 @@ class PacketReceipt:
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class PacketReceiptCallbacks:
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def __init__(self):
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self.delivery = None
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self.timeout = None
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class Packet:
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# Constants
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DATA = 0x00;
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ANNOUNCE = 0x01;
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LINKREQUEST = 0x02;
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PROOF = 0x03;
|
||||
types = [DATA, ANNOUNCE, LINKREQUEST, PROOF]
|
||||
|
||||
HEADER_1 = 0x00; # Normal header format
|
||||
HEADER_2 = 0x01; # Header format used for link packets in transport
|
||||
HEADER_3 = 0x02; # Normal header format, but used to indicate a link request proof
|
||||
HEADER_4 = 0x03; # Reserved
|
||||
header_types = [HEADER_1, HEADER_2, HEADER_3, HEADER_4]
|
||||
|
||||
# Defaults
|
||||
TIMEOUT = 3600.0
|
||||
|
||||
def __init__(self, destination, data, packet_type = DATA, transport_type = RNS.Transport.BROADCAST, header_type = HEADER_1, transport_id = None):
|
||||
if destination != None:
|
||||
if transport_type == None:
|
||||
transport_type = RNS.Transport.BROADCAST
|
||||
|
||||
self.header_type = header_type
|
||||
self.packet_type = packet_type
|
||||
self.transport_type = transport_type
|
||||
|
||||
self.hops = 0;
|
||||
self.destination = destination
|
||||
self.transport_id = transport_id
|
||||
self.data = data
|
||||
self.flags = self.getPackedFlags()
|
||||
self.MTU = RNS.Reticulum.MTU
|
||||
|
||||
self.raw = None
|
||||
self.packed = False
|
||||
self.sent = False
|
||||
self.receipt = None
|
||||
self.fromPacked = False
|
||||
else:
|
||||
self.raw = data
|
||||
self.packed = True
|
||||
self.fromPacked = True
|
||||
|
||||
self.sent_at = None
|
||||
self.packet_hash = None
|
||||
|
||||
def getPackedFlags(self):
|
||||
if self.header_type == Packet.HEADER_3:
|
||||
packed_flags = (self.header_type << 6) | (self.transport_type << 4) | RNS.Destination.LINK | self.packet_type
|
||||
else:
|
||||
packed_flags = (self.header_type << 6) | (self.transport_type << 4) | (self.destination.type << 2) | self.packet_type
|
||||
return packed_flags
|
||||
|
||||
def pack(self):
|
||||
self.header = ""
|
||||
self.header += struct.pack("!B", self.flags)
|
||||
self.header += struct.pack("!B", self.hops)
|
||||
if self.header_type == Packet.HEADER_2:
|
||||
if t_destination != None:
|
||||
self.header += self.t_destination
|
||||
else:
|
||||
raise IOError("Packet with header type 2 must have a transport ID")
|
||||
|
||||
if self.header_type == Packet.HEADER_1:
|
||||
self.header += self.destination.hash
|
||||
if self.packet_type != Packet.ANNOUNCE:
|
||||
self.ciphertext = self.destination.encrypt(self.data)
|
||||
else:
|
||||
self.ciphertext = self.data
|
||||
|
||||
if self.header_type == Packet.HEADER_3:
|
||||
self.header += self.destination.link_id
|
||||
self.ciphertext = self.data
|
||||
|
||||
self.raw = self.header + self.ciphertext
|
||||
|
||||
if len(self.raw) > self.MTU:
|
||||
raise IOError("Packet size of "+str(len(self.raw))+" exceeds MTU of "+str(self.MTU)+" bytes")
|
||||
|
||||
self.packed = True
|
||||
|
||||
def unpack(self):
|
||||
self.flags = ord(self.raw[0])
|
||||
self.hops = ord(self.raw[1])
|
||||
|
||||
self.header_type = (self.flags & 0b11000000) >> 6
|
||||
self.transport_type = (self.flags & 0b00110000) >> 4
|
||||
self.destination_type = (self.flags & 0b00001100) >> 2
|
||||
self.packet_type = (self.flags & 0b00000011)
|
||||
|
||||
if self.header_type == Packet.HEADER_2:
|
||||
self.transport_id = self.raw[2:12]
|
||||
self.destination_hash = self.raw[12:22]
|
||||
self.data = self.raw[22:]
|
||||
else:
|
||||
self.transport_id = None
|
||||
self.destination_hash = self.raw[2:12]
|
||||
self.data = self.raw[12:]
|
||||
|
||||
self.packed = False
|
||||
|
||||
def send(self):
|
||||
if not self.sent:
|
||||
if not self.packed:
|
||||
self.pack()
|
||||
|
||||
if RNS.Transport.outbound(self):
|
||||
return self.receipt
|
||||
else:
|
||||
# TODO: Don't raise error here, handle gracefully
|
||||
raise IOError("Packet could not be sent! Do you have any outbound interfaces configured?")
|
||||
else:
|
||||
raise IOError("Packet was already sent")
|
||||
|
||||
def resend(self):
|
||||
if self.sent:
|
||||
Transport.outbound(self.raw)
|
||||
else:
|
||||
raise IOError("Packet was not sent yet")
|
||||
|
||||
def prove(self, destination=None):
|
||||
if self.fromPacked and self.destination:
|
||||
if self.destination.identity and self.destination.identity.prv:
|
||||
self.destination.identity.prove(self, destination)
|
||||
|
||||
# Generates a special destination that allows Reticulum
|
||||
# to direct the proof back to the proved packet's sender
|
||||
def generateProofDestination(self):
|
||||
return ProofDestination(self)
|
||||
|
||||
def validateProofPacket(self, proof_packet):
|
||||
return self.receipt.validateProofPacket(proof_packet)
|
||||
|
||||
def validateProof(self, proof):
|
||||
return self.receipt.validateProof(proof)
|
||||
|
||||
def updateHash(self):
|
||||
self.packet_hash = self.getHash()
|
||||
|
||||
def getHash(self):
|
||||
return RNS.Identity.fullHash(self.getHashablePart())
|
||||
|
||||
def getHashablePart(self):
|
||||
return self.raw[0:1]+self.raw[2:]
|
||||
|
||||
class ProofDestination:
|
||||
def __init__(self, packet):
|
||||
self.hash = packet.getHash()[:10];
|
||||
self.type = RNS.Destination.SINGLE
|
||||
|
||||
def encrypt(self, plaintext):
|
||||
return plaintext
|
||||
|
||||
self.timeout = None
|
||||
|
|
@ -0,0 +1,437 @@
|
|||
import RNS
|
||||
import bz2
|
||||
import math
|
||||
import time
|
||||
import threading
|
||||
import vendor.umsgpack as umsgpack
|
||||
|
||||
|
||||
class Resource:
|
||||
WINDOW_MIN = 1
|
||||
WINDOW_MAX = 10
|
||||
WINDOW = 5
|
||||
MAPHASH_LEN = 4
|
||||
SDU = RNS.Reticulum.MTU - RNS.Packet.HEADER_MAXSIZE
|
||||
RANDOM_HASH_SIZE = 4
|
||||
|
||||
DEFAULT_TIMEOUT = RNS.Packet.TIMEOUT
|
||||
MAX_RETRIES = 3
|
||||
ROUNDTRIP_FACTOR = 1.5
|
||||
|
||||
HASHMAP_IS_NOT_EXHAUSTED = 0x00
|
||||
HASHMAP_IS_EXHAUSTED = 0xFF
|
||||
|
||||
# Status constants
|
||||
NONE = 0x00
|
||||
QUEUED = 0x01
|
||||
ADVERTISED = 0x02
|
||||
TRANSFERRING = 0x03
|
||||
COMPLETE = 0x04
|
||||
FAILED = 0x05
|
||||
CORRUPT = 0x06
|
||||
|
||||
@staticmethod
|
||||
def accept(advertisement_packet, callback=None, progress_callback = None):
|
||||
try:
|
||||
adv = ResourceAdvertisement.unpack(advertisement_packet.plaintext)
|
||||
|
||||
resource = Resource(None, advertisement_packet.link)
|
||||
resource.status = Resource.TRANSFERRING
|
||||
|
||||
resource.flags = adv.f
|
||||
resource.size = adv.t
|
||||
resource.uncompressed_size = adv.d
|
||||
resource.hash = adv.h
|
||||
resource.random_hash = adv.r
|
||||
resource.hashmap_raw = adv.m
|
||||
resource.encrypted = True if resource.flags & 0x01 else False
|
||||
resource.compressed = True if resource.flags >> 1 & 0x01 else False
|
||||
resource.initiator = False
|
||||
resource.callback = callback
|
||||
resource.__progress_callback = progress_callback
|
||||
resource.total_parts = int(math.ceil(resource.size/float(Resource.SDU)))
|
||||
resource.received_count = 0
|
||||
resource.outstanding_parts = 0
|
||||
resource.parts = [None] * resource.total_parts
|
||||
resource.window = Resource.WINDOW
|
||||
resource.last_activity = time.time()
|
||||
|
||||
resource.hashmap = [None] * resource.total_parts
|
||||
resource.hashmap_height = 0
|
||||
resource.waiting_for_hmu = False
|
||||
|
||||
resource.link.register_incoming_resource(resource)
|
||||
|
||||
RNS.log("Accepting resource advertisement for "+RNS.prettyhexrep(resource.hash), RNS.LOG_DEBUG)
|
||||
resource.link.callbacks.resource_started(resource)
|
||||
|
||||
resource.hashmap_update(0, resource.hashmap_raw)
|
||||
|
||||
return resource
|
||||
except Exception as e:
|
||||
RNS.log("Could not decode resource advertisement, dropping resource", RNS.LOG_VERBOSE)
|
||||
traceback.print_exc()
|
||||
return None
|
||||
|
||||
def __init__(self, data, link, advertise=True, auto_compress=True, callback=None, progress_callback=None):
|
||||
self.status = Resource.NONE
|
||||
self.link = link
|
||||
self.rtt = None
|
||||
|
||||
if data != None:
|
||||
hashmap_ok = False
|
||||
while not hashmap_ok:
|
||||
self.initiator = True
|
||||
self.callback = callback
|
||||
self.progress_callback = progress_callback
|
||||
self.random_hash = RNS.Identity.getRandomHash()[:Resource.RANDOM_HASH_SIZE]
|
||||
self.uncompressed_data = data
|
||||
self.compressed_data = bz2.compress(self.uncompressed_data)
|
||||
self.uncompressed_size = len(self.uncompressed_data)
|
||||
self.compressed_size = len(self.compressed_data)
|
||||
|
||||
self.hash = RNS.Identity.fullHash(data+self.random_hash)
|
||||
self.expected_proof = RNS.Identity.fullHash(data+self.hash)
|
||||
|
||||
if (self.compressed_size < self.uncompressed_size and auto_compress):
|
||||
self.data = self.compressed_data
|
||||
self.compressed = True
|
||||
self.uncompressed_data = None
|
||||
else:
|
||||
self.data = self.uncompressed_data
|
||||
self.compressed = False
|
||||
self.compressed_data = None
|
||||
|
||||
if not self.link.encryption_disabled():
|
||||
self.data = self.link.encrypt(self.data)
|
||||
self.encrypted = True
|
||||
else:
|
||||
self.encrypted = False
|
||||
|
||||
self.size = len(self.data)
|
||||
|
||||
self.hashmap = ""
|
||||
self.parts = []
|
||||
for i in range(0,int(math.ceil(self.size/float(Resource.SDU)))):
|
||||
data = self.data[i*Resource.SDU:(i+1)*Resource.SDU]
|
||||
part = RNS.Packet(link, data, context=RNS.Packet.RESOURCE)
|
||||
part.pack()
|
||||
part.map_hash = self.getMapHash(data)
|
||||
self.hashmap += part.map_hash
|
||||
self.parts.append(part)
|
||||
|
||||
hashmap_ok = self.checkHashMap()
|
||||
if not hashmap_ok:
|
||||
RNS.log("Found hash collision in resource map, remapping...", RNS.LOG_VERBOSE)
|
||||
|
||||
if advertise:
|
||||
self.advertise()
|
||||
else:
|
||||
pass
|
||||
|
||||
|
||||
def checkHashMap(self):
|
||||
checked_hashes = []
|
||||
for part in self.parts:
|
||||
if part.map_hash in checked_hashes:
|
||||
return False
|
||||
checked_hashes.append(part.map_hash)
|
||||
|
||||
return True
|
||||
|
||||
def hashmap_update_packet(self, plaintext):
|
||||
if not self.status == Resource.FAILED:
|
||||
update = umsgpack.unpackb(plaintext[RNS.Identity.HASHLENGTH/8:])
|
||||
self.hashmap_update(update[0], update[1])
|
||||
|
||||
|
||||
def hashmap_update(self, segment, hashmap):
|
||||
if not self.status == Resource.FAILED:
|
||||
seg_len = ResourceAdvertisement.HASHMAP_MAX_LEN
|
||||
hashes = len(hashmap)/Resource.MAPHASH_LEN
|
||||
for i in range(0,hashes):
|
||||
self.hashmap[i+segment*seg_len] = hashmap[i*Resource.MAPHASH_LEN:(i+1)*Resource.MAPHASH_LEN]
|
||||
self.hashmap_height += 1
|
||||
|
||||
self.waiting_for_hmu = False
|
||||
self.request_next()
|
||||
|
||||
def getMapHash(self, data):
|
||||
return RNS.Identity.fullHash(data+self.random_hash)[:Resource.MAPHASH_LEN]
|
||||
|
||||
def advertise(self):
|
||||
thread = threading.Thread(target=self.__advertise_job)
|
||||
thread.setDaemon(True)
|
||||
thread.start()
|
||||
|
||||
def __advertise_job(self):
|
||||
data = ResourceAdvertisement(self).pack()
|
||||
packet = RNS.Packet(self.link, data, context=RNS.Packet.RESOURCE_ADV)
|
||||
while not self.link.ready_for_new_resource():
|
||||
self.status = Resource.QUEUED
|
||||
sleep(0.25)
|
||||
|
||||
packet.send()
|
||||
self.last_activity = time.time()
|
||||
self.adv_sent = self.last_activity
|
||||
self.rtt = None
|
||||
self.status = Resource.ADVERTISED
|
||||
self.link.register_outgoing_resource(self)
|
||||
|
||||
def assemble(self):
|
||||
if not self.status == Resource.FAILED:
|
||||
try:
|
||||
RNS.log("Assembling parts...")
|
||||
stream = ""
|
||||
for part in self.parts:
|
||||
stream += part
|
||||
|
||||
if self.encrypted:
|
||||
data = self.link.decrypt(stream)
|
||||
else:
|
||||
data = stream
|
||||
|
||||
if self.compressed:
|
||||
self.data = bz2.decompress(data)
|
||||
else:
|
||||
self.data = data
|
||||
|
||||
calculated_hash = RNS.Identity.fullHash(self.data+self.random_hash)
|
||||
|
||||
if calculated_hash == self.hash:
|
||||
self.status = Resource.COMPLETE
|
||||
self.prove()
|
||||
else:
|
||||
self.status = Resource.CORRUPT
|
||||
|
||||
except Exception as e:
|
||||
RNS.log("Error while assembling received resource.", RNS.LOG_ERROR)
|
||||
RNS.log("The contained exception was: "+str(e), RNS.LOG_ERROR)
|
||||
self.status = Resource.CORRUPT
|
||||
|
||||
if self.callback != None:
|
||||
self.callback(self)
|
||||
|
||||
|
||||
def prove(self):
|
||||
if not self.status == Resource.FAILED:
|
||||
proof = RNS.Identity.fullHash(self.data+self.hash)
|
||||
proof_data = self.hash+proof
|
||||
proof_packet = RNS.Packet(self.link, proof_data, packet_type=RNS.Packet.PROOF, context=RNS.Packet.RESOURCE_PRF)
|
||||
proof_packet.send()
|
||||
|
||||
def validateProof(self, proof_data):
|
||||
if not self.status == Resource.FAILED:
|
||||
if len(proof_data) == RNS.Identity.HASHLENGTH/8*2:
|
||||
if proof_data[RNS.Identity.HASHLENGTH/8:] == self.expected_proof:
|
||||
self.status = Resource.COMPLETE
|
||||
if self.callback != None:
|
||||
self.callback(self)
|
||||
else:
|
||||
pass
|
||||
else:
|
||||
pass
|
||||
|
||||
|
||||
def receive_part(self, packet):
|
||||
self.last_activity = time.time()
|
||||
if self.req_resp == None:
|
||||
self.req_resp = self.last_activity
|
||||
rtt = self.req_resp-self.req_sent
|
||||
if self.rtt == None:
|
||||
self.rtt = rtt
|
||||
elif self.rtt < rtt:
|
||||
self.rtt = rtt
|
||||
|
||||
if not self.status == Resource.FAILED:
|
||||
self.status = Resource.TRANSFERRING
|
||||
part_data = packet.data
|
||||
part_hash = self.getMapHash(part_data)
|
||||
|
||||
i = 0
|
||||
for map_hash in self.hashmap:
|
||||
if map_hash == part_hash:
|
||||
if self.parts[i] == None:
|
||||
self.parts[i] = part_data
|
||||
self.received_count += 1
|
||||
self.outstanding_parts -= 1
|
||||
i += 1
|
||||
|
||||
if self.__progress_callback != None:
|
||||
self.__progress_callback(self)
|
||||
|
||||
if self.outstanding_parts == 0 and self.received_count == self.total_parts:
|
||||
self.assemble()
|
||||
elif self.outstanding_parts == 0:
|
||||
if self.window < Resource.WINDOW_MAX:
|
||||
self.window += 1
|
||||
self.request_next()
|
||||
|
||||
# Called on incoming resource to send a request for more data
|
||||
def request_next(self):
|
||||
if not self.status == Resource.FAILED:
|
||||
if not self.waiting_for_hmu:
|
||||
self.outstanding_parts = 0
|
||||
hashmap_exhausted = Resource.HASHMAP_IS_NOT_EXHAUSTED
|
||||
requested_hashes = ""
|
||||
|
||||
i = 0; pn = 0
|
||||
for part in self.parts:
|
||||
|
||||
if part == None:
|
||||
part_hash = self.hashmap[pn]
|
||||
if part_hash != None:
|
||||
requested_hashes += part_hash
|
||||
self.outstanding_parts += 1
|
||||
i += 1
|
||||
else:
|
||||
hashmap_exhausted = Resource.HASHMAP_IS_EXHAUSTED
|
||||
|
||||
pn += 1
|
||||
if i >= self.window or hashmap_exhausted == Resource.HASHMAP_IS_EXHAUSTED:
|
||||
break
|
||||
|
||||
hmu_part = chr(hashmap_exhausted)
|
||||
if hashmap_exhausted == Resource.HASHMAP_IS_EXHAUSTED:
|
||||
last_map_hash = self.hashmap[self.hashmap_height-1]
|
||||
hmu_part += last_map_hash
|
||||
self.waiting_for_hmu = True
|
||||
|
||||
request_data = hmu_part + self.hash + requested_hashes
|
||||
request_packet = RNS.Packet(self.link, request_data, context = RNS.Packet.RESOURCE_REQ)
|
||||
|
||||
request_packet.send()
|
||||
self.last_activity = time.time()
|
||||
self.req_sent = self.last_activity
|
||||
self.req_resp = None
|
||||
|
||||
# Called on outgoing resource to make it send more data
|
||||
def request(self, request_data):
|
||||
if not self.status == Resource.FAILED:
|
||||
rtt = time.time() - self.adv_sent
|
||||
if self.rtt == None:
|
||||
self.rtt = rtt
|
||||
|
||||
self.status == Resource.TRANSFERRING
|
||||
wants_more_hashmap = True if ord(request_data[0]) == Resource.HASHMAP_IS_EXHAUSTED else False
|
||||
pad = 1+Resource.MAPHASH_LEN if wants_more_hashmap else 1
|
||||
|
||||
requested_hashes = request_data[pad+RNS.Identity.HASHLENGTH/8:]
|
||||
|
||||
for i in range(0,len(requested_hashes)/Resource.MAPHASH_LEN):
|
||||
requested_hash = requested_hashes[i*Resource.MAPHASH_LEN:(i+1)*Resource.MAPHASH_LEN]
|
||||
|
||||
i = 0
|
||||
for part in self.parts:
|
||||
if part.map_hash == requested_hash:
|
||||
if not part.sent:
|
||||
part.send()
|
||||
else:
|
||||
part.resend()
|
||||
self.last_activity = time.time()
|
||||
break
|
||||
i += 1
|
||||
|
||||
if wants_more_hashmap:
|
||||
last_map_hash = request_data[1:Resource.MAPHASH_LEN+1]
|
||||
|
||||
part_index = 0
|
||||
for part in self.parts:
|
||||
part_index += 1
|
||||
if part.map_hash == last_map_hash:
|
||||
break
|
||||
|
||||
if part_index % ResourceAdvertisement.HASHMAP_MAX_LEN != 0:
|
||||
RNS.log("Resource sequencing error, cancelling transfer!", RNS.LOG_ERROR)
|
||||
self.cancel()
|
||||
else:
|
||||
segment = part_index / ResourceAdvertisement.HASHMAP_MAX_LEN
|
||||
|
||||
|
||||
hashmap_start = segment*ResourceAdvertisement.HASHMAP_MAX_LEN
|
||||
hashmap_end = min((segment+1)*ResourceAdvertisement.HASHMAP_MAX_LEN, len(self.parts))
|
||||
|
||||
hashmap = ""
|
||||
for i in range(hashmap_start,hashmap_end):
|
||||
hashmap += self.hashmap[i*Resource.MAPHASH_LEN:(i+1)*Resource.MAPHASH_LEN]
|
||||
|
||||
hmu = self.hash+umsgpack.packb([segment, hashmap])
|
||||
hmu_packet = RNS.Packet(self.link, hmu, context = RNS.Packet.RESOURCE_HMU)
|
||||
hmu_packet.send()
|
||||
self.last_activity = time.time()
|
||||
|
||||
def cancel(self):
|
||||
self.status = Resource.FAILED
|
||||
if self.initiator:
|
||||
cancel_packet = RNS.Packet(self.link, self.hash, context=RNS.Packet.RESOURCE_ICL)
|
||||
cancel_packet.send()
|
||||
self.link.cancel_outgoing_resource(self)
|
||||
else:
|
||||
self.link.cancel_incoming_resource(self)
|
||||
|
||||
if self.callback != None:
|
||||
self.callback(self)
|
||||
|
||||
def progress_callback(self, callback):
|
||||
self.__progress_callback = callback
|
||||
|
||||
def progress(self):
|
||||
progress = self.received_count / float(self.total_parts)
|
||||
return progress
|
||||
|
||||
def __str__(self):
|
||||
return RNS.prettyHexRep(self.hash)
|
||||
|
||||
|
||||
class ResourceAdvertisement:
|
||||
# TODO: Can this be allocated dynamically? Keep in mind hashmap_update inference
|
||||
HASHMAP_MAX_LEN = 84
|
||||
|
||||
def __init__(self, resource=None):
|
||||
if resource != None:
|
||||
self.t = resource.size # Transfer size
|
||||
self.d = resource.uncompressed_size # Data size
|
||||
self.n = len(resource.parts) # Number of parts
|
||||
self.h = resource.hash # Resource hash
|
||||
self.r = resource.random_hash # Resource random hash
|
||||
self.m = resource.hashmap # Resource hashmap
|
||||
self.c = resource.compressed # Compression flag
|
||||
self.e = resource.encrypted # Encryption flag
|
||||
self.f = 0x00 | self.c << 1 | self.e # Flags
|
||||
|
||||
def pack(self, segment=0):
|
||||
hashmap_start = segment*ResourceAdvertisement.HASHMAP_MAX_LEN
|
||||
hashmap_end = min((segment+1)*ResourceAdvertisement.HASHMAP_MAX_LEN, self.n)
|
||||
|
||||
hashmap = ""
|
||||
for i in range(hashmap_start,hashmap_end):
|
||||
hashmap += self.m[i*Resource.MAPHASH_LEN:(i+1)*Resource.MAPHASH_LEN]
|
||||
|
||||
dictionary = {
|
||||
u"t": self.t,
|
||||
u"d": self.d,
|
||||
u"n": self.n,
|
||||
u"h": self.h,
|
||||
u"r": self.r,
|
||||
u"f": self.f,
|
||||
u"m": hashmap
|
||||
}
|
||||
|
||||
return umsgpack.packb(dictionary)
|
||||
|
||||
@staticmethod
|
||||
def unpack(data):
|
||||
dictionary = umsgpack.unpackb(data)
|
||||
|
||||
adv = ResourceAdvertisement()
|
||||
adv.t = dictionary["t"]
|
||||
adv.d = dictionary["d"]
|
||||
adv.n = dictionary["n"]
|
||||
adv.h = dictionary["h"]
|
||||
adv.r = dictionary["r"]
|
||||
adv.m = dictionary["m"]
|
||||
adv.f = dictionary["f"]
|
||||
adv.e = True if (adv.f & 0x01) == 0x01 else False
|
||||
adv.c = True if ((adv.f >> 1) & 0x01) == 0x01 else False
|
||||
|
||||
return adv
|
||||
|
|
@ -29,7 +29,7 @@ class Reticulum:
|
|||
Reticulum.cachepath = Reticulum.configdir+"/storage/cache"
|
||||
|
||||
Reticulum.__allow_unencrypted = False
|
||||
Reticulum.__use_implicit_proof = False
|
||||
Reticulum.__use_implicit_proof = True
|
||||
|
||||
if not os.path.isdir(Reticulum.storagepath):
|
||||
os.makedirs(Reticulum.storagepath)
|
||||
|
|
@ -41,7 +41,7 @@ class Reticulum:
|
|||
self.config = ConfigObj(self.configpath)
|
||||
RNS.log("Configuration loaded from "+self.configpath)
|
||||
else:
|
||||
RNS.log("Could not load config file, creating default configuration...")
|
||||
RNS.log("Could not load config file, creating default configuration file...")
|
||||
self.createDefaultConfig()
|
||||
RNS.log("Default config file created. Make any necessary changes in "+Reticulum.configdir+"/config and start Reticulum again.")
|
||||
RNS.log("Exiting now!")
|
||||
|
|
@ -244,11 +244,8 @@ class Reticulum:
|
|||
except Exception as e:
|
||||
RNS.log("The interface \""+name+"\" could not be created. Check your configuration file for errors!", RNS.LOG_ERROR)
|
||||
RNS.log("The contained exception was: "+str(e), RNS.LOG_ERROR)
|
||||
#traceback.print_exc()
|
||||
|
||||
|
||||
|
||||
|
||||
def createDefaultConfig(self):
|
||||
self.config = ConfigObj()
|
||||
self.config.filename = Reticulum.configpath
|
||||
|
|
|
|||
|
|
@ -115,18 +115,19 @@ class Transport:
|
|||
if packet.packet_type == RNS.Packet.ANNOUNCE:
|
||||
if RNS.Identity.validateAnnounce(packet):
|
||||
Transport.cache(packet)
|
||||
|
||||
if packet.packet_type == RNS.Packet.LINKREQUEST:
|
||||
|
||||
elif packet.packet_type == RNS.Packet.LINKREQUEST:
|
||||
for destination in Transport.destinations:
|
||||
if destination.hash == packet.destination_hash and destination.type == packet.destination_type:
|
||||
packet.destination = destination
|
||||
destination.receive(packet)
|
||||
Transport.cache(packet)
|
||||
|
||||
if packet.packet_type == RNS.Packet.DATA:
|
||||
elif packet.packet_type == RNS.Packet.DATA:
|
||||
if packet.destination_type == RNS.Destination.LINK:
|
||||
for link in Transport.active_links:
|
||||
if link.link_id == packet.destination_hash:
|
||||
packet.link = link
|
||||
link.receive(packet)
|
||||
Transport.cache(packet)
|
||||
else:
|
||||
|
|
@ -143,13 +144,17 @@ class Transport:
|
|||
if destination.callbacks.proof_requested:
|
||||
destination.callbacks.proof_requested(packet)
|
||||
|
||||
if packet.packet_type == RNS.Packet.PROOF:
|
||||
if packet.header_type == RNS.Packet.HEADER_3:
|
||||
elif packet.packet_type == RNS.Packet.PROOF:
|
||||
if packet.context == RNS.Packet.LRPROOF:
|
||||
# This is a link request proof, forward
|
||||
# to a waiting link request
|
||||
for link in Transport.pending_links:
|
||||
if link.link_id == packet.destination_hash:
|
||||
link.validateProof(packet)
|
||||
elif packet.context == RNS.Packet.RESOURCE_PRF:
|
||||
for link in Transport.active_links:
|
||||
if link.link_id == packet.destination_hash:
|
||||
link.receive(packet)
|
||||
else:
|
||||
# TODO: Make sure everything uses new proof handling
|
||||
if len(packet.data) == RNS.PacketReceipt.EXPL_LENGTH:
|
||||
|
|
|
|||
|
|
@ -10,6 +10,7 @@ from .Transport import Transport
|
|||
from .Destination import Destination
|
||||
from .Packet import Packet
|
||||
from .Packet import PacketReceipt
|
||||
from .Resource import Resource
|
||||
|
||||
modules = glob.glob(os.path.dirname(__file__)+"/*.py")
|
||||
__all__ = [ os.path.basename(f)[:-3] for f in modules if not f.endswith('__init__.py')]
|
||||
|
|
|
|||
File diff suppressed because it is too large
Load Diff
Loading…
Reference in New Issue