mirror of
https://github.com/markqvist/Reticulum.git
synced 2024-11-05 05:40:14 +00:00
Serial interface and echo example
This commit is contained in:
parent
d4be407821
commit
e66622bd69
@ -104,7 +104,7 @@ class Identity:
|
||||
announced_identity = Identity(public_only=True)
|
||||
announced_identity.loadPublicKey(public_key)
|
||||
|
||||
if announced_identity.validate(signature, signed_data):
|
||||
if announced_identity.pub != None and announced_identity.validate(signature, signed_data):
|
||||
FPE.log("Announce is valid", FPE.LOG_VERBOSE)
|
||||
FPE.Identity.remember(FPE.Identity.fullHash(packet.raw), destination_hash, public_key)
|
||||
FPE.log("Stored valid announce from "+FPE.prettyhexrep(destination_hash), FPE.LOG_INFO)
|
||||
@ -158,9 +158,12 @@ class Identity:
|
||||
self.updateHashes()
|
||||
|
||||
def loadPublicKey(self, key):
|
||||
self.pub_bytes = key
|
||||
self.pub = load_der_public_key(self.pub_bytes, backend=default_backend())
|
||||
self.updateHashes()
|
||||
try:
|
||||
self.pub_bytes = key
|
||||
self.pub = load_der_public_key(self.pub_bytes, backend=default_backend())
|
||||
self.updateHashes()
|
||||
except Exception as e:
|
||||
FPE.log("Error while loading public key, the contained exception was: "+str(e), FPE.LOG_ERROR)
|
||||
|
||||
def updateHashes(self):
|
||||
self.hash = Identity.truncatedHash(self.pub_bytes)
|
||||
@ -203,27 +206,29 @@ class Identity:
|
||||
|
||||
def decrypt(self, ciphertext):
|
||||
if self.prv != None:
|
||||
# TODO: Remove debug output print("Ciphertext length is "+str(len(ciphertext))+". ")
|
||||
chunksize = (Identity.KEYSIZE)/8
|
||||
chunks = int(math.ceil(len(ciphertext)/(float(chunksize))))
|
||||
plaintext = None
|
||||
try:
|
||||
chunksize = (Identity.KEYSIZE)/8
|
||||
chunks = int(math.ceil(len(ciphertext)/(float(chunksize))))
|
||||
|
||||
plaintext = "";
|
||||
for chunk in range(chunks):
|
||||
start = chunk*chunksize
|
||||
end = (chunk+1)*chunksize
|
||||
if (chunk+1)*chunksize > len(ciphertext):
|
||||
end = len(ciphertext)
|
||||
plaintext = "";
|
||||
for chunk in range(chunks):
|
||||
start = chunk*chunksize
|
||||
end = (chunk+1)*chunksize
|
||||
if (chunk+1)*chunksize > len(ciphertext):
|
||||
end = len(ciphertext)
|
||||
|
||||
# TODO: Remove debug output print("Processing chunk "+str(chunk+1)+" of "+str(chunks)+". Starting at "+str(start)+" and stopping at "+str(end)+". The length is "+str(len(ciphertext[start:end])))
|
||||
|
||||
plaintext += self.prv.decrypt(
|
||||
ciphertext[start:end],
|
||||
padding.OAEP(
|
||||
mgf=padding.MGF1(algorithm=hashes.SHA1()),
|
||||
algorithm=hashes.SHA1(),
|
||||
label=None
|
||||
plaintext += self.prv.decrypt(
|
||||
ciphertext[start:end],
|
||||
padding.OAEP(
|
||||
mgf=padding.MGF1(algorithm=hashes.SHA1()),
|
||||
algorithm=hashes.SHA1(),
|
||||
label=None
|
||||
)
|
||||
)
|
||||
)
|
||||
except:
|
||||
FPE.log("Decryption by "+FPE.prettyhexrep(self.hash)+" failed")
|
||||
|
||||
return plaintext;
|
||||
else:
|
||||
raise KeyError("Decryption failed because identity does not hold a private key")
|
||||
|
@ -4,11 +4,12 @@ from time import sleep
|
||||
import sys
|
||||
import serial
|
||||
import threading
|
||||
import time
|
||||
import FPE
|
||||
|
||||
class SerialInterface(Interface):
|
||||
MAX_CHUNK = 32768
|
||||
TIMEOUT_SECONDS = 0.15
|
||||
TIMEOUT_SECONDS = 1.0
|
||||
|
||||
owner = None
|
||||
port = None
|
||||
@ -26,6 +27,8 @@ class SerialInterface(Interface):
|
||||
self.databits = databits
|
||||
self.parity = serial.PARITY_NONE
|
||||
self.stopbits = stopbits
|
||||
self.timeout = 100
|
||||
self.online = False
|
||||
|
||||
if parity.lower() == "e" or parity.lower() == "even":
|
||||
self.parity = serial.PARITY_EVEN
|
||||
@ -41,9 +44,10 @@ class SerialInterface(Interface):
|
||||
bytesize = self.databits,
|
||||
parity = self.parity,
|
||||
stopbits = self.stopbits,
|
||||
timeout = SerialInterface.TIMEOUT_SECONDS,
|
||||
xonxoff = False,
|
||||
rtscts = False,
|
||||
timeout = 0,
|
||||
inter_byte_timeout = None,
|
||||
write_timeout = None,
|
||||
dsrdtr = False,
|
||||
)
|
||||
@ -52,10 +56,11 @@ class SerialInterface(Interface):
|
||||
raise e
|
||||
|
||||
if self.serial.is_open:
|
||||
sleep(0.5)
|
||||
thread = threading.Thread(target=self.readLoop)
|
||||
thread.setDaemon(True)
|
||||
thread.start()
|
||||
sleep(0.5)
|
||||
self.online = True
|
||||
FPE.log("Serial port "+self.port+" is now open")
|
||||
else:
|
||||
raise IOError("Could not open serial port")
|
||||
@ -66,18 +71,29 @@ class SerialInterface(Interface):
|
||||
|
||||
|
||||
def processOutgoing(self,data):
|
||||
written = self.serial.write(data)
|
||||
if written != len(data):
|
||||
raise IOError("Serial interface only wrote "+str(written)+" bytes of "+str(len(data)))
|
||||
if self.online:
|
||||
written = self.serial.write(data)
|
||||
if written != len(data):
|
||||
raise IOError("Serial interface only wrote "+str(written)+" bytes of "+str(len(data)))
|
||||
|
||||
|
||||
def readLoop(self):
|
||||
#pass
|
||||
while self.serial.is_open:
|
||||
data = self.serial.read(size=self.owner.__class__.MTU)
|
||||
if not data == "":
|
||||
self.processIncoming(data)
|
||||
|
||||
|
||||
|
||||
try:
|
||||
data_buffer = ""
|
||||
last_read_ms = int(time.time()*1000)
|
||||
while self.serial.is_open:
|
||||
if self.serial.in_waiting:
|
||||
data = self.serial.read(size=self.serial.in_waiting)
|
||||
data_buffer += data
|
||||
last_read_ms = int(time.time()*1000)
|
||||
else:
|
||||
time_since_last = int(time.time()*1000) - last_read_ms
|
||||
if len(data_buffer) > 0 and time_since_last > self.timeout:
|
||||
self.processIncoming(data_buffer)
|
||||
data_buffer = ""
|
||||
sleep(0.08)
|
||||
except Exception as e:
|
||||
self.online = False
|
||||
FPE.log("A serial port error occurred, the contained exception was: "+str(e), FPE.LOG_ERROR)
|
||||
FPE.log("The interface "+str(self.name)+" is now offline. Restart FlexPE to attempt reconnection.", FPE.LOG_ERROR)
|
||||
|
||||
|
@ -36,7 +36,7 @@ def server(configpath):
|
||||
|
||||
def announceLoop(destination):
|
||||
# Let the user know that everything is ready
|
||||
FPE.log("Echo server running, hit enter to send announce (Ctrl-C to quit)")
|
||||
FPE.log("Echo server "+FPE.prettyhexrep(destination.hash)+" running, hit enter to send announce (Ctrl-C to quit)")
|
||||
|
||||
# We enter a loop that runs until the users exits.
|
||||
# If the user just hits enter, we will announce our server
|
||||
@ -102,7 +102,7 @@ def client(destination_hexhash, configpath):
|
||||
exit()
|
||||
|
||||
# We must first initialise FlexPE
|
||||
fpe = FPE.FlexPE()
|
||||
fpe = FPE.FlexPE(configpath)
|
||||
|
||||
# Randomly create a new identity for our echo server
|
||||
client_identity = FPE.Identity()
|
||||
@ -191,10 +191,13 @@ def clientProofCallback(proof_packet):
|
||||
else:
|
||||
rtt = round(rtt*1000, 3)
|
||||
rttstring = str(rtt)+" milliseconds"
|
||||
|
||||
FPE.log(
|
||||
"Valid echo reply, proved by "+FPE.prettyhexrep(unproven_packet.destination.hash)+
|
||||
", round-trip time was "+rttstring
|
||||
)
|
||||
sent_requests.remove(unproven_packet)
|
||||
del unproven_packet
|
||||
else:
|
||||
FPE.log("Proof invalid")
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user