def publishData(self):
timestamp = time.time()
info = {''}
if self._pir == None:
cpu_use = ps.cpu_percent()
users = [u.name for u in ps.users()]
nProcesses = len(ps.pids())
memUse = ps.virtual_memory().percent
swapUse = ps.swap_memory().percent
info = {'count': self._count, 'cpu_usage':cpu_use, 'users':users, 'processes':nProcesses,
'memory_usage':memUse, 'swap_usage':swapUse}
else:
info = {'count': self._count, 'pir_bool': self._pir.read()}
self._count += 1
dataOut = Data(Name(self._dataPrefix).appendVersion(int(timestamp)))
dataOut.setContent(json.dumps(info))
dataOut.getMetaInfo().setFreshnessPeriod(10000)
self.signData(dataOut)
#self._dataCache.add(dataOut)
# instead of adding data to content cache, we put data to nfd anyway
self.send(dataOut.wireEncode().buf())
print('data name: ' + dataOut.getName().toUri() + '; content: ' + str(info))
# repeat every 1 seconds
self.loop.call_later(1, self.publishData)
def onInterest(self, prefix, interest, transport, registeredPrefixId):
"""Called when an interest for the specified name is recieved"""
# keep track of when first interest was recieved
self._initial_time['download_time'] = time.time()
# set data to a byte array of a specified size
interestName = interest.getName()
data = Data(interestName)
data.setContent(self._byte_array)
# sign and send data
data.getMetaInfo().setFreshnessPeriod(3600 * 1000)
self._key_chain.sign(data, self._key_chain.getDefaultCertificateName())
transport.send(data.wireEncode().toBuffer())
# print additional information if verobse flag is set
if self._verbose:
dump("Replied to:", interestName.toUri())
# increment appropriate variables
self._interests_recieved += 1
self._interests_satisfied += 1
self._num_interests += 1
# stop loop if the required number of interests have been satisified
if self._num_interests >= self._max_interests:
self.shutdown()
def onDataInterest(prefix, interest, transport, pxID):
'''
For publishing face
'''
# just make up some data and return it
interestName = interest.getName()
logger.info("Interest for " + interestName.toUri())
## CURRENTLY ASSUMES THERE'S A VERSION/SEGMENT SUFFIX!
dataName = Name(interestName.getPrefix(-1))
ts = (time.time())
segmentId = 0
try:
segmentId = interestName().get(-1).toSegment()
except:
logger.debug("Could not find segment id!")
dataName.appendSegment(segmentId)
versionStr = interestName.get(-2).getValue().toRawStr()
logger.debug('publishing ' + versionStr)
info = getInfoForVersion(versionStr)
d = Data(dataName)
content = "(" + str(ts) + ") Data named " + dataName.toUri()
d.setContent(content)
d.getMetaInfo().setFinalBlockID(segmentId)
keychain.sign(d, certName)
encodedData = d.wireEncode()
now = time.time()
if info is not None:
info['publish_time'] = now
transport.send(encodedData.toBuffer())
def publishData(self):
timestamp = time.time()
cpu_use = ps.cpu_percent()
users = [u.name for u in ps.users()]
nProcesses = len(ps.pids())
memUse = ps.virtual_memory().percent
swapUse = ps.swap_memory().percent
info = {
'cpu_usage': cpu_use,
'users': users,
'processes': nProcesses,
'memory_usage': memUse,
'swap_usage': swapUse
}
dataOut = Data(Name(self._dataPrefix).appendVersion(int(timestamp)))
dataOut.setContent(json.dumps(info))
dataOut.getMetaInfo().setFreshnessPeriod(10000)
self.signData(dataOut)
self._dataCache.add(dataOut)
# repeat every 5 seconds
self.loop.call_later(5, self.publishData)
def wrap_content(self, name, content, key=None, key_locator=None):
"""
@param name - name of the data
@param content - data to be wrapped
@param key - key used to sign the data
@return the content object created
wraps the given name and content into a content object
"""
co = Data(Name(name))
co.setContent(content)
co.getMetaInfo().setFreshnessPeriod(5000)
co.getMetaInfo().setFinalBlockID(Name("/%00%09")[0])
identityStorage = MemoryIdentityStorage()
privateKeyStorage = MemoryPrivateKeyStorage()
identityManager = IdentityManager(identityStorage, privateKeyStorage)
keyChain = KeyChain(identityManager, None)
# Initialize the storage.
keyName = Name("/ndn/bms/DSK-default")
certificateName = keyName.getSubName(0, keyName.size() - 1).append(
"KEY").append(keyName[-1]).append("ID-CERT").append("0")
identityStorage.addKey(keyName, KeyType.RSA, Blob(DEFAULT_PUBLIC_KEY_DER))
privateKeyStorage.setKeyPairForKeyName(keyName, DEFAULT_PUBLIC_KEY_DER,
DEFAULT_PRIVATE_KEY_DER)
keyChain.sign(co, certificateName)
_data = co.wireEncode()
return _data.toRawStr()
def generateData(baseName):
'''
This appends the segment number to the data name
'''
# just make up some data and return it
ts = (time.time())
segmentId = 0 # compatible with repo-ng test: may change to test segmented data
versionComponent = baseName.get(-1) # should have a ts
dataName = Name(baseName)
dataName.appendSegment(segmentId)
d = Data(dataName)
content = "(" + str(ts) + ") Data named " + dataName.toUri()
d.setContent(content)
d.getMetaInfo().setFinalBlockID(segmentId)
d.getMetaInfo().setFreshnessPeriod(-1)
if shouldSign:
keychain.sign(d, certName)
else:
d.setSignature(fakeSignature)
if shouldCollectStats:
info = getInfoForVersion(versionComponent.toEscapedString())
if info is not None:
info['publish_time'] = ts
return d
def generateData(self, baseName):
'''
This appends the segment number to the data name, since repo-ng tends to expect it
'''
# just make up some data and return it
ts = (time.time())
segmentId = 0 # compatible with repo-ng test: may change to test segmented data
versionStr = baseName.get(-1).toEscapedString()
dataName = Name(baseName)
dataName.appendSegment(segmentId)
d = Data(dataName)
content = "(" + str(ts) + ") Data named " + dataName.toUri()
d.setContent(content)
d.getMetaInfo().setFinalBlockID(segmentId)
d.getMetaInfo().setFreshnessPeriod(-1)
if shouldSign:
self.keychain.sign(d, self.certificateName)
else:
d.setSignature(self.fakeSignature)
stats.insertDataForVersion(versionStr, {'publish_time':time.time()})
logger.debug('Publishing: '+d.getName().toUri())
return d
def __init__(self, prefix, transferfile):
self.keyChain = KeyChain()
self.prefix = Name(prefix)
self.isDone = False
self.transferfile = transferfile
# Initialize list for Data packet storage.
# We'll treat the indices as equivalent to the sequence
# number requested by Interests.
self.data = []
f = open(transferfile, 'rb')
imgdata = f.read()
chunks = list(chunkstring(imgdata, 8192))
print len(chunks)
finalBlock = Name.Component.fromNumberWithMarker(len(chunks) - 1, 0x00)
hourMilliseconds = 3600 * 1000
# Pre-generate and sign all of Data we can serve.
# We can also set the FinalBlockID in each packet
# ahead of time because we know the entire sequence.
for i in range(0, len(chunks)):
dataName = Name(prefix).appendSegment(i)
print dataName
data = Data(dataName)
data.setContent(chunks[i])
data.getMetaInfo().setFinalBlockID(finalBlock)
data.getMetaInfo().setFreshnessPeriod(hourMilliseconds)
self.keyChain.sign(data, self.keyChain.getDefaultCertificateName())
self.data.append(data)
def test_malformed_certificate(self):
# Copy the default certificate.
malformedCertificate = Data(
self._fixture._subIdentity.getDefaultKey().getDefaultCertificate())
malformedCertificate.getMetaInfo().setType(ContentType.BLOB)
self._fixture._keyChain.sign(
malformedCertificate, SigningInfo(self._fixture._identity))
# It has the wrong content type and a missing ValidityPeriod.
try:
CertificateV2(malformedCertificate).wireEncode()
self.fail("Did not throw the expected exception")
except CertificateV2.Error:
pass
else:
self.fail("Did not throw the expected exception")
originalProcessInterest = self._fixture._face._processInterest
def processInterest(interest, onData, onTimeout, onNetworkNack):
if interest.getName().isPrefixOf(malformedCertificate.getName()):
onData(interest, malformedCertificate)
else:
originalProcessInterest.processInterest(
interest, onData, onTimeout, onNetworkNack)
self._fixture._face._processInterest = processInterest
data = Data(Name("/Security/V2/ValidatorFixture/Sub1/Sub2/Data"))
self._fixture._keyChain.sign(data, SigningInfo(self._fixture._subIdentity))
self.validateExpectFailure(data, "Signed by a malformed certificate")
self.assertEqual(1, len(self._fixture._face._sentInterests))
def _onInterest(self, prefix, interest, face, interestFilterId,
filter):
"""
Send back a Chat Data Packet which contains the user's message.
"""
sequenceNo = int(interest.getName()[-1].toEscapedString())
gotContent = False
content = None
for i in range(len(self._messageCache) - 1, -1, -1):
message = self._messageCache[i]
if message.sequenceNo == sequenceNo:
# Use setattr because "from" is a reserved keyword.
# For now we have one message only...
content = json.dumps({
'names': [message.name.toUri()],
'timestamp':
int(round(message.time / 1000.0))
})
gotContent = True
break
if gotContent:
# TODO: Check if this works in Python 3.
data = Data(interest.getName())
data.setContent(content)
data.getMetaInfo().setFreshnessPeriod(
self._namespaceMessageFreshnessPeriod)
self._keyChain.sign(data, self._certificateName)
try:
face.putData(data)
except Exception as ex:
logging.getLogger(__name__).error(
"Error in transport.send: %s", str(ex))
return
def onPublishInterest(self, prefix, interest, transport, pxID):
'''
For publishing face
'''
# just make up some data and return it
interestName = interest.getName()
logger.info("Interest for " + interestName.toUri())
## CURRENTLY ASSUMES THERE'S A VERSION+SEGMENT SUFFIX!
dataName = Name(interestName)
ts = (time.time())
segmentId = 0
#try:
# segmentId = interestName.get(-1).toSegment()
#except:
#logger.debug("Could not find segment id!")
#dataName.appendSegment(segmentId)
versionStr = str(interestName.get(-2).getValue())
logger.debug('Publishing ' + versionStr + ' @ ' + str(ts))
d = Data(dataName)
content = "(" + str(ts) + ") Data named " + dataName.toUri()
d.setContent(content)
d.getMetaInfo().setFinalBlockID(segmentId)
d.getMetaInfo().setFreshnessPeriod(1000)
self.keychain.sign(d, self.certificateName)
encodedData = d.wireEncode()
stats.insertDataForVersion(versionStr, {'publish_time': time.time()})
transport.send(encodedData.toBuffer())
def __init__(self, prefix, maxCount=1):
self.keyChain = KeyChain()
self.prefix = Name(prefix)
self.isDone = False
# Initialize list for Data packet storage.
# We'll treat the indices as equivalent to the sequence
# number requested by Interests.
self.data = []
finalBlock = Name.Component.fromNumberWithMarker(maxCount - 1, 0x00)
hourMilliseconds = 3600 * 1000
# Pre-generate and sign all of Data we can serve.
# We can also set the FinalBlockID in each packet
# ahead of time because we know the entire sequence.
for i in range(maxCount):
dataName = Name(prefix).appendSegment(i)
data = Data(dataName)
data.setContent("Hello, " + dataName.toUri())
data.getMetaInfo().setFinalBlockID(finalBlock)
data.getMetaInfo().setFreshnessPeriod(hourMilliseconds)
self.keyChain.sign(data, self.keyChain.getDefaultCertificateName())
self.data.append(data)
def test_malformed_certificate(self):
# Copy the default certificate.
malformedCertificate = Data(
self._fixture._subIdentity.getDefaultKey().getDefaultCertificate())
malformedCertificate.getMetaInfo().setType(ContentType.BLOB)
self._fixture._keyChain.sign(malformedCertificate,
SigningInfo(self._fixture._identity))
# It has the wrong content type and a missing ValidityPeriod.
try:
CertificateV2(malformedCertificate).wireEncode()
self.fail("Did not throw the expected exception")
except CertificateV2.Error:
pass
else:
self.fail("Did not throw the expected exception")
originalProcessInterest = self._fixture._face._processInterest
def processInterest(interest, onData, onTimeout, onNetworkNack):
if interest.getName().isPrefixOf(malformedCertificate.getName()):
onData(interest, malformedCertificate)
else:
originalProcessInterest.processInterest(
interest, onData, onTimeout, onNetworkNack)
self._fixture._face._processInterest = processInterest
data = Data(Name("/Security/V2/ValidatorFixture/Sub1/Sub2/Data"))
self._fixture._keyChain.sign(data,
SigningInfo(self._fixture._subIdentity))
self.validateExpectFailure(data, "Signed by a malformed certificate")
self.assertEqual(1, len(self._fixture._face._sentInterests))
def onInterest(self, prefix, interest, transport, registeredPrefixId):
interestName = interest.getName()
interestParams = str(interest.getApplicationParameters())
addPrefixes = interestParams.split("|")
interestParams = interestParams + "|" + get_device_ip()
# For each Prefix recieved save it in local array
# Add route for that prefix from User to gateway router
for i in range(0, len(addPrefixes)):
print addPrefixes[i]
self.prefixesList.append(str(addPrefixes[i]))
os.system("nfdc route add " + str(addPrefixes[i]) + " " +
self.gatewayFace)
# Send prefixesList to gateway router
subprocess.call([
"python", "interestSender.py", "-u /ndnchat/register",
"-p " + interestParams
])
data = Data(interestName)
data.setContent("Register Successful")
hourMilliseconds = 3600 * 1000
data.getMetaInfo().setFreshnessPeriod(hourMilliseconds)
self.keyChain.sign(data, self.keyChain.getDefaultCertificateName())
transport.send(data.wireEncode().toBuffer())
print "Sent advertisement to gateway router"
def onInterest(self, prefix, interest, transport, registeredPrefixId):
filepath = 'cpu.txt'
counter = 0.0
avg = 0
fp = open(filepath)
line = fp.readline()
cnt = 0
while line:
conv_int = float(line)
line = fp.readline()
#print("Line {}: {}".format(cnt, line.strip()))
counter = counter + conv_int
cnt += 1
total = (cnt)
#print (total)
avg = (counter) / total
#print (avg)
interestName = interest.getName()
data = Data(interestName)
data.setContent("CPU avg:" + str(avg))
hourMilliseconds = 3600 * 1000
data.getMetaInfo().setFreshnessPeriod(hourMilliseconds)
self.keyChain.sign(data, self.keyChain.getDefaultCertificateName())
transport.send(data.wireEncode().toBuffer())
print "Replied to: %s" % interestName.toUri()
def publish(self, line):
dataObject = json.loads(line)
locationName = Name(
self.msgLocationToHierarchicalName(dataObject["sensor_id"]))
if not (locationName.toUri() in self._sensorList):
print self._sensorLocations
print locationName.toUri()
if locationName.toUri() in self._sensorLocations:
x = self._sensorLocations[locationName.toUri()]['X']
y = self._sensorLocations[locationName.toUri()]['Y']
self._sensorList[locationName.toUri()] = {
"id": locationName.toUri(),
"x": x,
"y": y
}
else:
self._sensorList[locationName.toUri()] = {
"id": locationName.toUri()
}
self.publishMetadata()
dataName = Name(self._namespace).append(locationName).append(
self.msgTimestampToNameComponent(dataObject["timestamp"]))
data = Data(dataName)
data.setContent(line)
data.getMetaInfo().setFreshnessPeriod(self._defaultFreshnessPeriod)
self._keyChain.sign(data)
self._cache.add(data)
print("Data " + dataName.toUri() + " added for record: " + line)
self.startRepoInsertion(data)
def onInterest(self, prefix, interest, transport, registeredPrefixId):
interestName = interest.getName()
data = Data(interestName)
dt = datetime.now()
if (interestName.toUri() == "/vanet-ndn/iklanpertama"):
data.setContent(
"\nLakukan Pengisian Pulsa Telkomsel sekarang juga \nDapatkan pulsa 5000 dan kelipatan untuk setiap pembelian pulsa 10000 dan kelipatannya\n"
) #bagian ini bisa diganti dengan informasi dari sensor
elif (interestName.toUri() == "/vanet-ndn/iklankedua"):
data.setContent(
"\nLakukan Pengisian Kuota Indosat sekarang juga! \nDapatkan kemudahan dalam berinternet digenggamanmu\n"
) #bagian ini bisa diganti dengan informasi dari sensor
elif (interestName.toUri() == "/vanet-ndn/iklanketiga"):
data.setContent(
"\nIngin memiliki Smartphone baru? \nDapatkan smartphone impian mu dengan XL\nCek xl.co.id untuk penawaran menarik\n"
) #bagian ini bisa diganti dengan informasi dari sensor
else:
data.setContent(
"\nJarak kendaraan: \n"
) #bagian ini bisa diganti dengan informasi dari sensor
hourMilliseconds = 10 #3600 * 1000 #1000 jam
data.getMetaInfo().setFreshnessPeriod(hourMilliseconds)
self.keyChain.sign(data, self.keyChain.getDefaultCertificateName())
transport.send(data.wireEncode().toBuffer())
print("Replied to: %s at %s" % (interestName.toUri(), dt))
#print("==================================================================\n")
pass
def onLightingCommand(self, prefix, interest, transport, prefixId):
interestName = Name(interest.getName())
#d = Data(interest.getName().getPrefix(prefix.size()+1))
d = Data(interest.getName())
# get the command parameters from the name
try:
commandComponent = interest.getName().get(prefix.size())
commandParams = interest.getName().get(prefix.size()+1)
lightingCommand = LightCommandMessage()
ProtobufTlv.decode(lightingCommand, commandParams.getValue())
self.log.info("Command: " + commandComponent.toEscapedString())
requestedColor = lightingCommand.command.pattern.colors[0]
colorStr = str((requestedColor.r, requestedColor.g, requestedColor.b))
self.log.info("Requested color: " + colorStr)
self.setPayloadColor(0, requestedColor)
self.sendLightPayload(1)
d.setContent("Gotcha: " + colorStr+ "\n")
except Exception as e:
print e
d.setContent("Bad command\n")
finally:
d.getMetaInfo().setFinalBlockID(0)
self.signData(d)
encodedData = d.wireEncode()
transport.send(encodedData.toBuffer())
def createFreshData(self):
freshData = Data(Name("/ndn/abc"))
freshData.setContent("SUCCESS!")
freshData.getMetaInfo().setFreshnessPeriod(5000.0)
freshData.getMetaInfo().setFinalBlockId(Name("/%00%09")[0])
# Initialize the storage.
return freshData
def createFreshData(self):
freshData = Data(Name("/ndn/abc"))
freshData.setContent("SUCCESS!")
freshData.getMetaInfo().setFreshnessPeriod(5000.0)
freshData.getMetaInfo().setFinalBlockID(Name("/%00%09")[0])
# Initialize the storage.
return freshData
def createData(self, namePrefix, timestamp, payload, certName):
data = Data(Name(self._namespace).append(namePrefix).append(str(int(float(timestamp)))))
data.setContent(payload)
self._keyChain.sign(data, certName)
data.getMetaInfo().setFreshnessPeriod(self.DEFAULT_DATA_LIFETIME)
if __debug__:
print(data.getName().toUri())
return data
def publishData(self, key, key_ts, payload, timestamp):
data = Data(Name(self.prefix).append(bytearray(timestamp)))
iv = Random.new().read(AES.block_size)
encryptor = AES.new(key, AES.MODE_CBC, iv)
data.setContent(bytearray(key_ts + iv + encryptor.encrypt(pad(json.dumps(payload)))))
data.getMetaInfo().setFreshnessPeriod(5000)
self.keychain.sign(data, self.cert_name)
self.publisher.put(data)
def createData(self, namePrefix, timestamp, payload, certName):
data = Data(
Name(self._namespace).append(namePrefix).append(str(timestamp)))
data.setContent(payload)
self._keyChain.sign(data, certName)
data.getMetaInfo().setFreshnessPeriod(self.DEFAULT_DATA_LIFETIME)
if __debug__:
print(data.getName().toUri())
return data
def sendData(self, prefix, interest, face, registeredPrefixId, content): #onInterest
#transport.send(encodedData.toBuffer())
#print(prefix)
# Publish segments
dataSize = len(content)
print("Dat size: ",dataSize)
segmentBegin = 0
segmentNo = 0
print "Start"
while segmentBegin < dataSize:
segmentEnd = segmentBegin + 2000 #Common.MAX_NDN_PACKET_SIZE
if segmentEnd > dataSize:
segmentEnd = dataSize
# Make and sign a Data packet.
print("Prefix: ")
print(prefix)
if not "%" in str(prefix)[-7:]:
segmentName = prefix
#print("NO % in name: ", segmentName)
segmentName.appendSegment(segmentNo)
else:
segmentName = str(prefix)[:-1]
#print("% in name: ",segmentName)
segmentName += str(segmentNo)
segmentName = Name(segmentName)
print("Segment Name: ")
print(segmentName)
print("Segment Name appended: ", segmentName)
print "Segmenting data from %d to %d" % (segmentBegin, segmentEnd)
print("COntent: ")
print(content[segmentBegin:segmentEnd])
data = Data(segmentName)
data.setContent(content[segmentBegin:segmentEnd])
data.getMetaInfo().setFreshnessPeriod(2000)
self._keyChain.sign(data, self._certificateName)
if segmentEnd >= dataSize:
print("yes")
data.getMetaInfo().setFinalBlockId(segmentName[-1])
#encodedData = data.wireEncode()
segmentBegin = segmentEnd
print "Sending data " + segmentName.toUri()
#transport.send(encodedData.toBuffer())
face.putData(data)
segmentNo += 1
time.sleep(0.5)
print "Finish"
def reply_(self, interest, response):
if type(response) is Response:
data = Data(interest.getName().appendTimestamp(
self.microsecondTimestamp_()))
data.setContent(json.dumps(response.payload_))
data.getMetaInfo().setFreshnessPeriod(100)
self.keyChain_.sign(data)
self.face_.putData(data)
else:
raise "Returned type is not Response"
def contentCacheAddEntityData(self, name, entityInfo):
content = self._serializer.serialize(entityInfo)
data = Data(Name(name))
data.setContent(content)
data.getMetaInfo().setFreshnessPeriod(self._entityDataFreshnessPeriod)
self._keyChain.sign(data, self._certificateName)
self._memoryContentCache.add(data)
print "added entity to cache: " + data.getName().toUri() + "; " + data.getContent().toRawStr()
def onEntityDataNotFound(self, prefix, interest, face, interestFilterId, filter):
name = interest.getName().toUri()
if name in self._hostedObjects:
content = self._serializer.serialize(self._hostedObjects[name])
data = Data(Name(name))
data.setContent(content)
data.getMetaInfo().setFreshnessPeriod(self._entityDataFreshnessPeriod)
self._keyChain.sign(data, self._certificateName)
self._face.putData(data)
return
def set_returndata(self, interest, returndatacontent):
interestName = interest.getName()
data = Data(interestName)
data.setContent(
returndatacontent) #suppose the returndatacontent is string
hourMilliseconds = 0 # here I should set it 0 since it always need to fresh.
data.getMetaInfo().setFreshnessPeriod(hourMilliseconds)
self.keyChain.sign(data, self.keyChain.getDefaultCertificateName()
) #need to cheek if it works here.
return (data)
def test_sign_verify_data(self):
freshData = Data(Name("/ndn/abc"))
freshData.setContent("SUCCESS!")
freshData.getMetaInfo().setFreshnessPeriod(5000.0)
freshData.getMetaInfo().setFinalBlockId(Name("/%00%09")[0])
self.h.signData(freshInterest, self.raw_key_name)
result = self.h.verifyInterest(freshInterest)
self.assertEqual(result, True, 'verifiedInterest does not match original interest')
def onInterest(self, prefix, interest, face, interestFilterId, filter):
interestName = interest.getName()
data = Data(interestName)
data.setContent("Test Push Interest Polling model")
hourMilliseconds = 600 * 1000
data.getMetaInfo().setFreshnessPeriod(hourMilliseconds)
self.keyChain.sign(data, self.keyChain.getDefaultCertificateName())
face.send(data.wireEncode().toBuffer())
print "Replied to Interest name: %s" % interestName.toUri()
print "Replied with Data name: %s" % interestName.toUri()
def unknownCommandResponse(self, interest):
"""
Called when the node receives an interest where the handler is unknown or unimplemented.
:return: the Data packet to return in case of unhandled interests. Return None
to ignore and let the interest timeout or be handled by another node.
:rtype: pyndn.Data
"""
responseData = Data(Name(interest.getName()).append("unknown"))
responseData.setContent("Unknown command name")
responseData.getMetaInfo().setFreshnessPeriod(1000) # expire soon
return responseData
def unknownCommandResponse(self, interest):
"""
Called when the node receives an interest where the handler is unknown or unimplemented.
:return: the Data packet to return in case of unhandled interests. Return None
to ignore and let the interest timeout or be handled by another node.
:rtype: pyndn.Data
"""
responseData = Data(Name(interest.getName()).append("unknown"))
responseData.setContent("Unknown command name")
responseData.getMetaInfo().setFreshnessPeriod(1000) # expire soon
return responseData
def onInterest(self, prefix, interest, face, interestFilterId, filter):
interestName = interest.getName()
### Extract Data content from Interest name
interest_name_components = interestName.toUri().split("/")
Data_content = interest_name_components[interest_name_components.index("push") + 1]
print 'Received Data: %s' %Data_content
data = Data(interestName)
data.setContent("ACK")
hourMilliseconds = 600 * 1000
data.getMetaInfo().setFreshnessPeriod(hourMilliseconds)
self.keyChain.sign(data, self.keyChain.getDefaultCertificateName())
face.send(data.wireEncode().toBuffer())
print "Sending ACK"
def onInterest(self, prefix, interest, transport, registeredPrefixId):
interestName = interest.getName()
data = Data(interestName)
data.setContent("Hello, " + interestName.toUri())
hourMilliseconds = 3600 * 1000
data.getMetaInfo().setFreshnessPeriod(3600 * 1000)
self.keyChain.sign(data, self.keyChain.getDefaultCertificateName())
transport.send(data.wireEncode().toBuffer())
print "Replied to: %s" % interestName.toUri()
def onInterest(self, prefix, interest, transport, registeredPrefixId):
interestName = interest.getName()
data = Data(interestName)
data.setContent("Hello, " + interestName.toUri())
hourMilliseconds = 3600 * 1000
data.getMetaInfo().setFreshnessPeriod(hourMilliseconds)
self.keyChain.sign(data, self.keyChain.getDefaultCertificateName())
transport.send(data.wireEncode().toBuffer())
print "Replied to: %s" % interestName.toUri()
def contentCacheAddSyncData(self, dataName):
sortedKeys = sorted(self._objects.keys())
content = ""
for key in sortedKeys:
content += key + "\n"
content.strip()
data = Data(Name(dataName))
data.setContent(content)
data.getMetaInfo().setFreshnessPeriod(self._syncDataFreshnessPeriod)
self._keyChain.sign(data, self._certificateName)
# adding this data to memoryContentCache should satisfy the pending interest
self._memoryContentCache.add(data)
def publishMetadata(self):
# For now, hardcoded sensor list on gateway's end
data = Data(
Name(self._namespace).append("_meta").append(
str(int(time.time() * 1000.0))))
data.setContent(json.dumps(self._sensorList))
data.getMetaInfo().setFreshnessPeriod(self._defaultFreshnessPeriod)
self._keyChain.sign(data)
self._cache.add(data)
print("Metadata " + data.getName().toUri() +
" added for sensor list: " + str(self._sensorList))
self.startRepoInsertion(data)
return
def onInterest(self, prefix, interest, transport, registeredPrefixId):
print("========= received [ interest ] ========= :\n" + interest.getName().toUri()) # for test
interestName = interest.getName()
appcontentstr = interest.getApplicationParameters()
data = Data(interestName)
data.setContent("Hello! This data come from producer-01.")
# hourMilliseconds = 3600 * 1000
hourMilliseconds = 0 # here I should set it 0 since it always need to fresh.
data.getMetaInfo().setFreshnessPeriod(hourMilliseconds)
self.keyChain.sign(data, self.keyChain.getDefaultCertificateName())
transport.send(data.wireEncode().toBuffer())
print("\n ######## Replied [ data ] ########\n \n")
def onInterest(self, prefix, interest, transport, registeredPrefixId):
"""Called when an interest for the specified name is recieved"""
interestName = interest.getName()
data = Data(interestName)
data.setContent("Hello, " + interestName.toUri())
hourMilliseconds = 3600 * 1000
data.getMetaInfo().setFreshnessPeriod(hourMilliseconds)
self.keyChain.sign(data, self.keyChain.getDefaultCertificateName())
transport.send(data.wireEncode().toBuffer())
dump("Replied to:", interestName.toUri())
def onInterest(self, prefix, interest, transport, registeredPrefixId):
lines = open('cpu.txt', 'r')
numbers = map(float, lines)
max_number = max(numbers)
interestName = interest.getName()
data = Data(interestName)
data.setContent("CPU max:" + str(max_number))
hourMilliseconds = 3600 * 1000
data.getMetaInfo().setFreshnessPeriod(hourMilliseconds)
self.keyChain.sign(data, self.keyChain.getDefaultCertificateName())
transport.send(data.wireEncode().toBuffer())
print "Replied to: %s" % interestName.toUri()
def onLightingCommand(self, prefix, interest, transport, prefixId):
#print datetime.datetime.now()
self.receiveFile.write('{0:f}'.format(self.unix_time_now()) + '\n')
interestName = Name(interest.getName())
#interstname: /ndn/ucla.edu/sculptures/ai_bus/lights/setRGB/%83%0D%84%0B%87%09%89%01%04%8A%01%01%8B%01%01
#d: <pyndn.data.Data object at 0xb64825d0>
print "interstname", interestName.toUri()
d = Data(interest.getName())
# get the command parameters from the name
try:
commandComponent = interest.getName().get(prefix.size())
#print commandComponent.toEscapedString():setRGB
#print "prefix ",prefix.toUri():/ndn/ucla.edu/sculpture/ai_bus/lights
#print "get name",interest.getName().toUri()
commandParams = interest.getName().get(prefix.size()+1)
#print "commandParams ",commandParams:%83%0D%84%0B%87%09%89%01%04%8A%01%01%8B%01%01
lightingCommand = LightCommandMessage()
ProtobufTlv.decode(lightingCommand, commandParams.getValue())
#self.log.info("Command: " + commandComponent.toEscapedString())
requestedColor = lightingCommand.command.pattern.colors[0]
colorStr = str((requestedColor.r, requestedColor.g, requestedColor.b))
#self.log.info("Requested color: " + colorStr)
self.setPayloadColor(0, requestedColor)
self.lightState = not self.lightState
if self.lightState:
print "Off"
else:
print "On"
#print requestedColor
self.sendLightPayload(1)
d.setContent("Gotcha: " + colorStr+ "\n")
except KeyboardInterrupt:
print "key interrupt"
sys.exit(1)
except Exception as e:
print e
d.setContent("Bad command\n")
finally:
d.getMetaInfo().setFinalBlockID(0)
self.signData(d)
encodedData = d.wireEncode()
transport.send(encodedData.toBuffer())
def main():
data = Data()
data.wireDecode(TlvData)
dump("Decoded Data:")
dumpData(data)
# Set the content again to clear the cached encoding so we encode again.
data.setContent(data.getContent())
encoding = data.wireEncode()
reDecodedData = Data()
reDecodedData.wireDecode(encoding)
dump("")
dump("Re-decoded Data:")
dumpData(reDecodedData)
identityStorage = MemoryIdentityStorage()
privateKeyStorage = MemoryPrivateKeyStorage()
keyChain = KeyChain(IdentityManager(identityStorage, privateKeyStorage),
SelfVerifyPolicyManager(identityStorage))
# Initialize the storage.
keyName = Name("/testname/DSK-123")
certificateName = keyName.getSubName(
0,
keyName.size() - 1).append("KEY").append(
keyName[-1]).append("ID-CERT").append("0")
identityStorage.addKey(keyName, KeyType.RSA,
Blob(DEFAULT_RSA_PUBLIC_KEY_DER))
privateKeyStorage.setKeyPairForKeyName(keyName, KeyType.RSA,
DEFAULT_RSA_PUBLIC_KEY_DER,
DEFAULT_RSA_PRIVATE_KEY_DER)
keyChain.verifyData(reDecodedData, makeOnVerified("Re-decoded Data"),
makeOnVerifyFailed("Re-decoded Data"))
freshData = Data(Name("/ndn/abc"))
freshData.setContent("SUCCESS!")
freshData.getMetaInfo().setFreshnessPeriod(5000)
freshData.getMetaInfo().setFinalBlockId(Name("/%00%09")[0])
keyChain.sign(freshData, certificateName)
dump("")
dump("Freshly-signed Data:")
dumpData(freshData)
keyChain.verifyData(freshData, makeOnVerified("Freshly-signed Data"),
makeOnVerifyFailed("Freshly-signed Data"))
def _onCommandReceived(self, prefix, interest, transport, prefixId):
"""
"""
interestName = interest.getName()
#if it is a certificate name, serve the certificate
foundCert = self._identityStorage.getCertificate(interestName)
if foundCert is not None:
self.log.debug("Serving certificate request")
transport.send(foundCert.wireEncode().buf())
return
afterPrefix = interestName.get(prefix.size()).toEscapedString()
if afterPrefix == "listCommands":
#compose device list
self.log.debug("Received device list request")
response = self._prepareCapabilitiesList(interestName)
self.sendData(response, transport)
elif afterPrefix == "certificateRequest":
#build and sign certificate
self.log.debug("Received certificate request")
self._handleCertificateRequest(interest, transport)
elif afterPrefix == "updateCapabilities":
# needs to be signed!
self.log.debug("Received capabilities update")
def onVerifiedCapabilities(interest):
response = Data(interest.getName())
response.setContent(str(time.time()))
self.sendData(response, transport)
self._updateDeviceCapabilities(interest)
self._keyChain.verifyInterest(interest,
onVerifiedCapabilities, self.verificationFailed)
elif afterPrefix == "addDevice":
self.log.debug("Received pairing request")
def onVerifiedPairingRequest(interest):
response = Data(interest.getName())
encryptedMessage = interest.getName()[len(prefix)+1]
responseCode = self._beginPairing(encryptedMessage)
response.setContent(str(responseCode))
self.sendData(response, transport)
self._keyChain.verifyInterest(interest, onVerifiedPairingRequest, self.verificationFailed)
else:
response = Data(interest.getName())
response.setContent("500")
response.getMetaInfo().setFreshnessPeriod(1000)
transport.send(response.wireEncode().buf())
def onInterest(self, prefix, interest, transport, registeredPrefixId):
if self.delay is not None:
time.sleep(self.delay)
interestName = interest.getName()
data = Data(interestName)
data.setContent("Hello " + interestName.toUri())
data.getMetaInfo().setFreshnessPeriod(3600 * 1000)
self.keyChain.sign(data, self.keyChain.getDefaultCertificateName())
transport.send(data.wireEncode().toBuffer())
self.nDataServed += 1
print "Replied to: %s (#%d)" % (interestName.toUri(), self.nDataServed)
def onInterest(self, prefix, interest, transport, registeredPrefixId):
interestName = interest.getName()
data = Data(interestName)
data.setContent("Hello, " + interestName.toUri())
# hourMilliseconds = 3600 * 1000
# data.getMetaInfo().setFreshnessPeriod(hourMilliseconds)
#manually adjust the FreshnessPeriod based on the time of producing a data packet
productionTimeGap = 3600 * 1000
data.getMetaInfo().setFreshnessPeriod(productionTimeGap)
self.keyChain.sign(data, self.keyChain.getDefaultCertificateName())
transport.send(data.wireEncode().toBuffer())
print("Replied to: %s" % interestName.toUri())
def produce(self):
# Produce the bounding box
print "ready to produce"
maxLong = -3600
minLong = 3600
maxLat = -3600
minLat = 3600
if len(self.rawData) == 0:
print "No raw data as producer input"
for item in self.rawData:
print item
if item["lng"] > maxLong:
maxLong = item["lng"]
if item["lng"] < minLong:
minLong = item["lng"]
if item["lat"] > maxLat:
maxLat = item["lat"]
if item["lat"] < minLat:
minLat = item["lat"]
result = json.dumps({
"maxlng": maxLong,
"minlng": minLong,
"maxlat": maxLat,
"minlat": minLat,
"size": len(self.rawData)
})
if self.encrypted:
# TODO: replace fixed timestamp for now for produced data, createContentKey as needed
testTime1 = Schedule.fromIsoString("20160320T080000")
self.producer.createContentKey(testTime1)
self.producer.produce(testTime1, result)
else:
# Arbitrary produced data lifetime
data = Data(Name(self.identityName).append("20160320T080000"))
data.getMetaInfo().setFreshnessPeriod(400000)
data.setContent(result)
# If the interest's still within lifetime, this will satisfy the interest
self.memoryContentCache.add(data)
print "Produced data with name " + data.getName().toUri()
def _handleCertificateRequest(self, interest):
"""
Extracts a public key name and key bits from a command interest name
component. Generates a certificate if the request is verifiable.
This expects an HMAC signed interest.
"""
message = CertificateRequestMessage()
commandParamsTlv = interest.getName().get(self.prefix.size() + 1)
ProtobufTlv.decode(message, commandParamsTlv.getValue())
signature = HmacHelper.extractInterestSignature(interest)
deviceSerial = str(
signature.getKeyLocator().getKeyName().get(-1).getValue())
response = Data(interest.getName())
certData = None
hmac = None
try:
hmac = self._hmacDevices[deviceSerial]
if hmac.verifyInterest(interest):
certData = self._createCertificateFromRequest(message)
# remove this hmac; another request will require a new pin
self._hmacDevices.pop(deviceSerial)
except KeyError:
self.log.warn(
'Received certificate request for device with no registered key'
)
except SecurityException as e:
self.log.warn('Could not create device certificate: ' + str(e))
else:
self.log.info(
'Creating certificate for device {}'.format(deviceSerial))
if certData is not None:
response.setContent(certData.wireEncode())
response.getMetaInfo().setFreshnessPeriod(
10000) # should be good even longer
else:
response.setContent("Denied")
if hmac is not None:
hmac.signData(response)
self.sendData(response, False)
def main():
data = Data()
data.wireDecode(TlvData)
dump("Decoded Data:")
dumpData(data)
# Set the content again to clear the cached encoding so we encode again.
data.setContent(data.getContent())
encoding = data.wireEncode()
reDecodedData = Data()
reDecodedData.wireDecode(encoding)
dump("")
dump("Re-decoded Data:")
dumpData(reDecodedData)
identityStorage = MemoryIdentityStorage()
privateKeyStorage = MemoryPrivateKeyStorage()
keyChain = KeyChain(IdentityManager(identityStorage, privateKeyStorage),
SelfVerifyPolicyManager(identityStorage))
# Initialize the storage.
keyName = Name("/testname/DSK-123")
certificateName = keyName.getSubName(0, keyName.size() - 1).append(
"KEY").append(keyName[-1]).append("ID-CERT").append("0")
identityStorage.addKey(keyName, KeyType.RSA, Blob(DEFAULT_RSA_PUBLIC_KEY_DER))
privateKeyStorage.setKeyPairForKeyName(
keyName, KeyType.RSA, DEFAULT_RSA_PUBLIC_KEY_DER, DEFAULT_RSA_PRIVATE_KEY_DER)
keyChain.verifyData(reDecodedData, makeOnVerified("Re-decoded Data"),
makeOnVerifyFailed("Re-decoded Data"))
freshData = Data(Name("/ndn/abc"))
freshData.setContent("SUCCESS!")
freshData.getMetaInfo().setFreshnessPeriod(5000)
freshData.getMetaInfo().setFinalBlockId(Name("/%00%09")[0])
keyChain.sign(freshData, certificateName)
dump("")
dump("Freshly-signed Data:")
dumpData(freshData)
keyChain.verifyData(freshData, makeOnVerified("Freshly-signed Data"),
makeOnVerifyFailed("Freshly-signed Data"))
def sendingFile(self, file_path, interest, face, freshness):
print "Sending File Function"
interestName = interest.getName()
interestNameSize = interestName.size()
try:
SegmentNum = (interestName.get(interestNameSize - 1)).toSegment()
dataName = interestName.getSubName(0, interestNameSize - 1)
# If no segment number is included in the INTEREST, set the segment number as 0 and set the file name to configuration script to be sent
except RuntimeError as e:
SegmentNum = 0
dataName = interestName
# Put file to the Data message
try:
# due to overhead of NDN name and other header values; NDN header overhead + Data packet content = < maxNdnPacketSize
# So Here segment size is hard coded to 5000 KB.
# Class Enumerate publisher is used to split large files into segments and get a required segment ( segment numbers started from 0)
dataSegment, last_segment_num = EnumeratePublisher(
file_path, self.Datamessage_size, SegmentNum).getFileSegment()
print 'SegmentNum:%s last_segment_num: %s' % (SegmentNum,
last_segment_num)
# create the DATA name appending the segment number
dataName = dataName.appendSegment(SegmentNum)
data = Data(dataName)
data.setContent(dataSegment)
# set the final block ID to the last segment number
last_segment = (Name.Component()).fromNumber(last_segment_num)
data.getMetaInfo().setFinalBlockId(last_segment)
#hourMilliseconds = 600 * 1000
data.getMetaInfo().setFreshnessPeriod(freshness)
# currently Data is signed from the Default Identitiy certificate
self.keyChain.sign(data, self.keyChain.getDefaultCertificateName())
# Sending Data message
face.send(data.wireEncode().toBuffer())
print "Replied to Interest name: %s" % interestName.toUri()
print "Replied with Data name: %s" % dataName.toUri()
except ValueError as err:
print "ERROR: %s" % err
def publishData(self, idx):
# Translation of the video URL has finished by the time of the publishData call;
# if not, we set translated to "publish"; this is data race free since translateUrl and publishData are scheduled in the same thread
if self._events[idx]["translated"] != "none":
# Order published events sequence numbers by start times in destination
data = Data(Name(self._namePrefixString + str(self._currentIdx)))
data.setContent(json.dumps(self._events[idx]))
data.getMetaInfo().setFreshnessPeriod(self._dataLifetime)
self._keyChain.sign(data, self._certificateName)
self._memoryContentCache.add(data)
self._currentIdx += 1
if __debug__:
eventId = str(self._events[idx]["event_id"])
channel = str(self._events[idx]["channel"])
srcUrl = str(self._events[idx]["src_url"])
clipName = str(self._events[idx]["clipName"])
ytPresent = str(self._events[idx]["ytPresent"])
clipStartTime = str(self._events[idx]["dst_start_time"])
clipEndTime = str(self._events[idx]["dst_end_time"])
print(
str(time.time())
+ " Added event ["
+ eventId
+ "-"
+ channel
+ "|"
+ clipName
+ " YT:"
+ ytPresent
+ " "
+ srcUrl[0:30]
+ "... "
+ clipStartTime
+ "-"
+ clipEndTime
+ "] ("
+ data.getName().toUri()
+ ")"
)
else:
self._events[idx]["translated"] = "publish"
def publishData(self):
timestamp = time.time()
cpu_use = ps.cpu_percent()
users = [u.name for u in ps.users()]
nProcesses = len(ps.pids())
memUse = ps.virtual_memory().percent
swapUse = ps.swap_memory().percent
info = {'cpu_usage':cpu_use, 'users':users, 'processes':nProcesses,
'memory_usage':memUse, 'swap_usage':swapUse}
dataOut = Data(Name(self._dataPrefix).appendVersion(int(timestamp)))
dataOut.setContent(json.dumps(info))
dataOut.getMetaInfo().setFreshnessPeriod(10000)
self.signData(dataOut)
self._dataCache.add(dataOut)
# repeat every 5 seconds
self.loop.call_later(5, self.publishData)
def onBtleData(self, data):
# expect data format like "0.2,0.1,0.3"
content = data.getContent().toRawStr()
print "got data: " + data.getName().toUri() + " : " + content
if self._security:
# Hmac verify the data we receive
pass
pyr = content.split(',')
if len(pyr) >= 3:
resultingContent = "{\"p\":" + pyr[0] + ",\"y\":" + pyr[1] + ",\"r\":" + pyr[2] + "}"
timestamp = time.time() * 1000
dataOut = Data(Name(self._dataPrefix).appendVersion(int(timestamp)))
dataOut.setContent(resultingContent)
dataOut.getMetaInfo().setFreshnessPeriod(10000)
self._keyChain.sign(dataOut, self._certificateName)
self._dataCache.add(dataOut)
print "data added: " + dataOut.getName().toUri()
def publishData(self):
timestamp = time.time()
cpu_use = ps.cpu_percent()
users = [u.name for u in ps.users()]
nProcesses = len(ps.pids())
memUse = ps.virtual_memory().percent
swapUse = ps.swap_memory().percent
info = {'cpu_usage':cpu_use, 'users':users, 'processes':nProcesses,
'memory_usage':memUse, 'swap_usage':swapUse}
dataOut = Data(Name(self._dataPrefix).appendVersion(int(timestamp)))
dataOut.setContent(json.dumps(info))
dataOut.getMetaInfo().setFreshnessPeriod(10000)
self._keyChain.sign(dataOut, self._certificateName)
self._dataCache.add(dataOut)
print "data added: " + dataOut.getName().toUri()
# repeat every 5 seconds
self._face.callLater(5000, self.publishData)
def main():
data = Data()
data.wireDecode(TlvData)
dump("Decoded Data:")
dumpData(data)
# Set the content again to clear the cached encoding so we encode again.
data.setContent(data.getContent())
encoding = data.wireEncode()
reDecodedData = Data()
reDecodedData.wireDecode(encoding)
dump("")
dump("Re-decoded Data:")
dumpData(reDecodedData)
# Set up the KeyChain.
keyChain = KeyChain("pib-memory:", "tpm-memory:")
keyChain.importSafeBag(SafeBag
(Name("/testname/KEY/123"),
Blob(DEFAULT_RSA_PRIVATE_KEY_DER, False),
Blob(DEFAULT_RSA_PUBLIC_KEY_DER, False)))
validator = Validator(ValidationPolicyFromPib(keyChain.getPib()))
validator.validate(reDecodedData, makeSuccessCallback("Re-decoded Data"),
makeFailureCallback("Re-decoded Data"))
freshData = Data(Name("/ndn/abc"))
freshData.setContent("SUCCESS!")
freshData.getMetaInfo().setFreshnessPeriod(5000)
freshData.getMetaInfo().setFinalBlockId(Name("/%00%09")[0])
keyChain.sign(freshData)
dump("")
dump("Freshly-signed Data:")
dumpData(freshData)
validator.validate(freshData, makeSuccessCallback("Freshly-signed Data"),
makeFailureCallback("Freshly-signed Data"))
def calculateAggregation(self, dataType, aggregationType, childrenList, startTime, interval, publishingPrefix, repeat = False):
doCalc = True
dataList = []
# TODO: an intermediate node cannot produce raw data for now
if len(childrenList.keys()) != 0:
for childName in childrenList.keys():
dataDictKey = self.getDataDictKey(startTime, (startTime + interval), childName)
if dataDictKey in self._dataQueue[dataType + aggregationType]._dataDict:
data = self._dataQueue[dataType + aggregationType]._dataDict[dataDictKey]
dataList.append(float(data.getContent().toRawStr()))
else:
#print('Child ' + childName + ' has not replied yet')
doCalc = False
break
else:
for inst in self._dataQueue[dataType]._dataDict.keys():
if int(inst) >= startTime and int(inst) < startTime + interval:
dataList.append(self._dataQueue[dataType]._dataDict[inst])
if doCalc:
content = self._aggregation.getAggregation(aggregationType, dataList)
if content:
publishData = Data(Name(publishingPrefix).append(str(startTime)).append(str(startTime + interval)))
publishData.setContent(str(content))
publishData.getMetaInfo().setFreshnessPeriod(DEFAULT_DATA_LIFETIME)
self._keyChain.sign(publishData, self._certificateName)
self._memoryContentCache.add(publishData)
for childName in childrenList.keys():
dataDictKey = self.getDataDictKey(startTime, (startTime + interval), childName)
if dataDictKey in self._dataQueue[dataType + aggregationType]._dataDict:
del self._dataQueue[dataType + aggregationType]._dataDict[dataDictKey]
if __debug__:
print("Produced: " + publishData.getName().toUri() + "; " + publishData.getContent().toRawStr())
# repetition of this function only happens for raw data producer, otherwise calculateAggregation is called by each onData
if repeat:
self._loop.call_later(interval, self.calculateAggregation, dataType, aggregationType, childrenList, startTime + interval, interval, publishingPrefix, repeat)
return
def _handleCertificateRequest(self, interest, transport):
"""
Extracts a public key name and key bits from a command interest name
component. Generates a certificate if the request is verifiable.
This expects an HMAC signed interest.
"""
message = CertificateRequestMessage()
commandParamsTlv = interest.getName().get(self.prefix.size()+1)
ProtobufTlv.decode(message, commandParamsTlv.getValue())
signature = HmacHelper.extractInterestSignature(interest)
deviceSerial = str(signature.getKeyLocator().getKeyName().get(-1).getValue())
response = Data(interest.getName())
certData = None
hmac = None
try:
hmac = self._hmacDevices[deviceSerial]
if hmac.verifyInterest(interest):
certData = self._createCertificateFromRequest(message)
# remove this hmac; another request will require a new pin
self._hmacDevices.pop(deviceSerial)
except KeyError:
self.log.warn('Received certificate request for device with no registered key')
except SecurityException:
self.log.warn('Could not create device certificate')
else:
self.log.info('Creating certificate for device {}'.format(deviceSerial))
if certData is not None:
response.setContent(certData.wireEncode())
response.getMetaInfo().setFreshnessPeriod(10000) # should be good even longer
else:
response.setContent("Denied")
if hmac is not None:
hmac.signData(response)
self.sendData(response, transport, False)