def main():
# The default Face will connect using a Unix socket, or to "localhost".
face = Face()
# Use the system default key chain and certificate name to sign.
keyChain = KeyChain()
face.setCommandSigningInfo(keyChain, keyChain.getDefaultCertificateName())
prefix = Namespace("/ndn/test/status", keyChain)
dump("Register prefix", prefix.name)
# Set the face and register to receive Interests.
prefix.setFace(face,
lambda prefixName: dump("Register failed for prefix", prefixName))
handler = GeneralizedObjectHandler()
# Each generalized object will have a 1000 millisecond freshness period.
metaInfo = MetaInfo()
metaInfo.setFreshnessPeriod(1000.0)
# This is called when the library receives an Interest which is not
# satisfied by Data already in the Namespace tree.
def onObjectNeeded(namespace, neededNamespace, callbackId):
if not (neededNamespace is prefix):
# This is not the expected Namespace.
return False
# Make a version from the current time.
versionNamespace = prefix[
Name.Component.fromVersion(Common.getNowMilliseconds())]
# The metaInfo has the freshness period.
versionNamespace.setNewDataMetaInfo(metaInfo)
dump("Producing the generalized object for", versionNamespace.name)
handler.setObject(
versionNamespace, Blob("Status as of " + str(datetime.datetime.now())),
"text/html")
return True
prefix.addOnObjectNeeded(onObjectNeeded)
while True:
face.processEvents()
# We need to sleep for a few milliseconds so we don't use 100% of the CPU.
time.sleep(0.01)
def main(args):
face = Face()
keyChain = KeyChain()
face.setCommandSigningInfo(keyChain, keyChain.getDefaultCertificateName())
gobj = Namespace(args['<prefix>'], keyChain)
gobj.setFace(
face,
lambda prefixName: dump("Register failed for prefix", prefixName))
handler = GeneralizedObjectHandler()
metaInfo = MetaInfo()
if args['--freshness']:
metaInfo.setFreshnessPeriod(float(args['--freshness']))
else:
metaInfo.setFreshnessPeriod(1000.0)
def onObjectNeeded(namespace, neededNamespace, callbackId):
if not (neededNamespace is gobj):
# This is not the expected Namespace.
return False
# Make a version from the current time.
versionNamespace = gobj[Name.Component.fromVersion(
Common.getNowMilliseconds())]
# The metaInfo has the freshness period.
versionNamespace.setNewDataMetaInfo(metaInfo)
with open(args['<file>'], 'r') as f:
handler.setObject(versionNamespace, Blob(f.read()), "text/html")
return True
gobj.addOnObjectNeeded(onObjectNeeded)
while True:
face.processEvents()
time.sleep(0.01)
def main():
# The default Face will connect using a Unix socket, or to "localhost".
face = Face()
# Create an in-memory key chain with default keys.
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)))
face.setCommandSigningInfo(keyChain, keyChain.getDefaultCertificateName())
# Enable Interest loopback so that the EncryptorV2 can fetch Data packets
# from the AccessManagerV2.
face.setInterestLoopbackEnabled(True)
contentPrefix = Name("/testname/content")
contentNamespace = Namespace(contentPrefix, keyChain)
# We know the content has two segments.
metaInfo = MetaInfo()
metaInfo.setFinalBlockId(Name().appendSegment(1)[0])
contentNamespace.setNewDataMetaInfo(metaInfo)
ckPrefix = Name("/some/ck/prefix")
encryptor = prepareData(ckPrefix, keyChain, face)
# Make the callback to produce a Data packet for a content segment.
def onObjectNeeded(namespace, neededNamespace, id):
if not (len(neededNamespace.name) == len(contentPrefix) + 1
and contentPrefix.isPrefixOf(neededNamespace.name)
and neededNamespace.name[-1].isSegment()):
# Not a content segment, ignore.
return False
# Get the segment number.
segment = neededNamespace.name[-1].toSegment()
if not (segment >= 0 and segment <= 1):
# An invalid segment was requested.
return False
segmentContent = ("This test message was decrypted"
if segment == 0 else " from segments.")
# Now call serializeObject which will answer the pending incoming Interest.
dump("Producing Data", neededNamespace.name)
neededNamespace.serializeObject(
encryptor.encrypt(Blob(segmentContent)).wireEncodeV2())
return True
contentNamespace.addOnObjectNeeded(onObjectNeeded)
dump("Register prefix", contentNamespace.name)
# Set the face and register to receive Interests.
contentNamespace.setFace(
face,
lambda prefixName: dump("Register failed for prefix", prefixName))
while True:
face.processEvents()
# We need to sleep for a few milliseconds so we don't use 100% of the CPU.
time.sleep(0.01)