def validateProof(self, packet):
if self.initiator:
peer_pub_bytes = packet.data[:Link.ECPUBSIZE]
signed_data = self.link_id + peer_pub_bytes
signature = packet.data[Link.ECPUBSIZE:RNS.Identity.KEYSIZE / 8 +
Link.ECPUBSIZE]
if self.destination.identity.validate(signature, signed_data):
self.loadPeer(peer_pub_bytes)
self.handshake()
self.rtt = time.time() - self.request_time
self.attached_interface = packet.receiving_interface
RNS.Transport.activateLink(self)
RNS.log(
"Link " + str(self) + " established with " +
str(self.destination) + ", RTT is " + str(self.rtt),
RNS.LOG_VERBOSE)
rtt_data = umsgpack.packb(self.rtt)
rtt_packet = RNS.Packet(self,
rtt_data,
context=RNS.Packet.LRRTT)
RNS.log("Sending RTT packet", RNS.LOG_EXTREME)
rtt_packet.send()
self.status = Link.ACTIVE
if self.callbacks.link_established != None:
self.callbacks.link_established(self)
else:
RNS.log(
"Invalid link proof signature received by " + str(self),
RNS.LOG_VERBOSE)
# TODO: should we really do this, or just wait
# for a valid one? Needs analysis.
self.teardown()
def exitHandler():
try:
packet_hashlist_path = RNS.Reticulum.configdir + "/packet_hashlist"
file = open(packet_hashlist_path, "w")
file.write(umsgpack.packb(Transport.packet_hashlist))
file.close()
except Exception as e:
RNS.log(
"Could not save packet hashlist to disk, the contained exception was: "
+ str(e), RNS.LOG_ERROR)
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)
def request(self, request_data):
if not self.status == Resource.FAILED:
rtt = time.time() - self.adv_sent
if self.rtt == None:
self.rtt = rtt
if self.status != Resource.TRANSFERRING:
self.status = Resource.TRANSFERRING
self.watchdog_job()
self.retries_left = self.max_retries
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]
pi = 0
for part in self.parts:
if part.map_hash == requested_hash:
if not part.sent:
part.send()
self.sent_parts += 1
else:
part.resend()
self.last_activity = time.time()
self.last_part_sent = self.last_activity
break
pi += 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()
if self.sent_parts == len(self.parts):
self.status = Resource.AWAITING_PROOF