def __init__(self, prefixstr):
self.handle = CCN()
#XXX: temporary, until we allow fetching key from key storage
self.key = self.handle.getDefaultKey()
self.keylocator = KeyLocator(self.key)
self.prefix = Name(prefixstr)
def __init__(self, *args, **kwargs): ''' Creates a socket. As of now, we try to get the ccnx key from the default location ''' super(CcnxSocket, self).__init__() self.ccnx_key = CCN.getDefaultKey() self.ccnx_key_locator = pyccn.KeyLocator(self.ccnx_key) self.ccnx_handle = CCN() self.event_loop = CcnxLoop(self.ccnx_handle)
def __init__(self, *args, **kwargs):
'''
Creates a socket. As of now, we try to get the ccnx key from the default location
'''
super(CcnxSocket, self).__init__()
self.ccnx_key = CCN.getDefaultKey()
self.ccnx_key_locator = pyccn.KeyLocator(self.ccnx_key)
self.ccnx_handle = CCN()
self.event_loop = CcnxLoop(self.ccnx_handle)
def __init__(self, configFileName): self.appConfigFileName = configFileName self.loadConfigFile() self.handle = CCN() self.getApplicationKey() #nameCrypto self.state = NameCrypto.new_state() self.cryptoKey = NameCrypto.generate_application_key(self.cfg.fixtureKey, self.cfg.appName)
def __init__(self, prefixstr ):
self.handle = CCN()
#XXX: temporary, until we allow fetching key from key storage
self.key = self.handle.getDefaultKey()
self.keylocator = KeyLocator(self.key)
self.prefix = Name(prefixstr)
def __init__(self, base_name, callback, handle=CCN.CCN(), version=None, latest=True): # some constants self.version_marker = '\xfd' self.first_version_marker = self.version_marker self.last_version_marker = '\xfe\x00\x00\x00\x00\x00\x00' self.base_name = Name.Name(base_name) self.callback = callback self.handle = handle self.latest_version = version if version else self.first_version_marker self.start_with_latest = latest
class sequencer(Closure):
#ensure singleton
_instance = None
def __new__(cls, *args, **kwargs):
if not cls._instance:
cls._instance = super(sequencer, cls).__new__(cls, *args, **kwargs)
return cls._instance
def __init__(self, configFileName):
self.appConfigFileName = configFileName
self.loadConfigFile()
self.handle = CCN()
self.getApplicationKey()
#nameCrypto
self.state = NameCrypto.new_state()
self.cryptoKey = NameCrypto.generate_application_key(self.cfg.fixtureKey, self.cfg.appName)
def loadConfigFile(self):
command = "import "+self.appConfigFileName+" as appCfg"
exec(command)
self.appCfg = appCfg;
self.cfg = appCfg;
def getApplicationKey(self):
print("getting application key for "+self.appCfg.appName)
key = Key()
keyFile = self.appCfg.keyFile
key.fromPEM(filename=keyFile)
self.appKey = key
self.key = key
def start(self):
print "starting "+self.cfg.appName
#self.allWhite()
#self.allBlack()
#self.spazz()
def spazz(self):
for i in range(1,500000):
self.allWhite()
self.allBlack()
def allWhite(self):
for d in self.cfg.names:
if d['name'] != "incandescent":
print d['name']
self.buildAndSendInterest(d['name'],255,255,255)
def allBlack(self):
for d in self.cfg.names:
if d['name'] != "incandescent":
print d['name']
self.buildAndSendInterest(d['name'],0,0,0)
def sendAllLights(self,r,g,b):
for d in self.cfg.names:
if d['name'] != "incandescent":
self.buildAndSendInterest(d['name'],r,g,b)
return
def hx(self, inum):
num = hex(inum)[2:]
if (len(num) == 1):
num = '0'+num
#print num
return str(num)
def buildAndSendInterest(self,device,r,g,b):
rx = self.hx(r)
gx = self.hx(g)
bx = self.hx(b)
CLI = device+"/setRGB/"+rx+gx+bx
#print CLI
self.sendSignedInterest(CLI)
def sendInterest(self,command):
n = Name.Name(self.cfg.appPrefix)
print("\nInterest espressing for "+str(n))
n += command
i = Interest.Interest()
print("Interest sending to "+str(n))
co = self.handle.get(n,i,20)
if not not co:
#if co is not empty, print result for debugging
print("content: "+str(co.content))
pass
def sendSignedInterest(self,command):
fullURI = self.cfg.appPrefix + command
#print fullURI
i = Interest()
#build keyLocator to append to interest for NameCrypto on upcall
keyLoc = pyccn.KeyLocator(self.key)
keyLocStr = _pyccn.dump_charbuf(keyLoc.ccn_data)
nameAndKeyLoc = Name(str(fullURI))
#print("there are "+str(len(nameAndKeyLoc))+" components")
nameAndKeyLoc += keyLocStr
#print("there are "+str(len(nameAndKeyLoc))+" components after adding keyLocStr")
t0 = time()
authName = NameCrypto.authenticate_command(self.state, nameAndKeyLoc, self.cfg.appName, self.cryptoKey)
t1 = time()
#print "elapsed sign", t1-t0
#print authName.components
t0 = time()
co = self.handle.expressInterest(authName,self)
t1 = time()
class TyzxServer(Closure):
def __init__(self, prefixstr):
self.handle = CCN()
#XXX: temporary, until we allow fetching key from key storage
self.key = self.handle.getDefaultKey()
self.keylocator = KeyLocator(self.key)
self.prefix = Name(prefixstr)
# member_name = Name.Name(self.members_uri)
# member_name.appendKeyID(fix_digest(self.key.publicKeyID))
# self.member_message = self.publish(member_name, nick)
def listen(self):
#listen to requests in namespace
self.handle.setInterestFilter(self.prefix, self)
self.handle.run(-1)
def publish(self, name, content):
# Name
#print name
# SignedInfo
si = pyccn.SignedInfo()
#si.type = pyccn.CCN_CONTENT_DATA
si.type = 0x0C04C0 # content type
si.finalBlockID = b'\x00'
si.publisherPublicKeyDigest = self.key.publicKeyID
si.keyLocator = self.keylocator
si.freshnessSeconds = FRESHNESS_SECONDS
# ContentObject
co = ContentObject()
co.content = content
co.name = name
co.signedInfo = si
co.sign(self.key)
return co
def upcall(self, kind, upcallInfo):
global lasttime
if lasttime is None: # can't answer yet
return pyccn.RESULT_OK
if len(tyzxObjs.objs) < 1:
return pyccn.RESULT_OK
interest = upcallInfo.Interest
#print "Interest", interest.name, time.time()
# CALL content matches interest to check exclusion on versions
#
#print interest.exclude
name = interest.name
#print name
if name == self.prefix: # root
#print "Request for root: %s" % str(name)
if interest.exclude is None:
freshids = tyzxObjs.objs.keys()[0:1]
else:
if len(interest.exclude.components) > 0:
ids = set(tyzxObjs.objs.keys()) # new stuff we have
suffixes = set(
[int(str(s)[1:]) for s in interest.exclude.components])
freshids = list(ids.difference(
suffixes)) # do we need this conversion?
#print "ids", ids
#print "suffixes", suffixes
#print "freshids", freshids
else:
freshids = tyzxObjs.objs.keys()[0:1]
if len(freshids) > 0:
child = freshids[0]
else:
return pyccn.RESULT_OK # no new content
else: # should check what we're receiving! take next component
child = int(
name.components[-1:][0]) # why not be able to do this on name?
#print "Request for child: %s" % child, time.time()
#print "child - ", child
if tyzxObjs.objs.has_key(child):
O = tyzxObjs.objs[child]
else:
# Don't want to respond with a nonexistent. NDN way is to not answer interest.
# If we've just started, we may not even know what the content store knows.
# But, we do want to answer "exits" that we know about.
#print "child", child, "is not present"
if tyzxObjs.objExits.has_key(child):
#print "child", child, "is exited"
O = tyzxObjs.objExits[child]
else:
return pyccn.RESULT_OK
#O = CompositeObject(BaseObject())
#O.time = lasttime.time
#O.id = int(child)
#O.status = "nonexistent"
msgname = Name(self.prefix)
msgname += str(child)
msgname.components.append(versionFromTime(
O.time)) # should have msgname.append
#msgname.ccn_data_dirty=True - now handled within PyCCN
# need binary add component
self.message = self.publish(msgname, O.toJSON())
#print "Publishing", msgname, O.toJSON()
#print "Present:", tyzxObjs.objs.keys(), time.time()
self.handle.put(self.message)
return pyccn.RESULT_INTEREST_CONSUMED
return pyccn.RESULT_OK
locator1 = _pyccn.KeyLocator_to_ccn(name=ccn_name1)
print(locator1)
locator1_obj = _pyccn.KeyLocator_obj_from_ccn(locator1)
print(locator1_obj)
print(locator1_obj.keyName)
name2 = _pyccn.name_comps_from_ccn(locator1_obj.keyName.ccn_data)
print(name2)
for comp1, comp2 in zip(name1, name2):
if comp1 != comp2:
raise AssertionError("Got a different output: '%s' != '%s'" % (comp1, comp2))
key1 = CCN.getDefaultKey()
locator2 = _pyccn.KeyLocator_to_ccn(key=key1.ccn_data_public)
print(locator2)
locator2_obj = _pyccn.KeyLocator_obj_from_ccn(locator2)
key2 = locator2_obj.key
print(key2)
print(key1.ccn_data_public)
print(key2.ccn_data_public)
assert(key1.publicToDER() == key2.publicToDER())
del key2
key2 = _pyccn.Key_obj_from_ccn(key1.ccn_data_private)
from pyccn import CCN, Name, Interest, Closure
from time import sleep
worked = False
class MyClosure(Closure):
def upcall(self, kind, upcallInfo):
global worked
print("Got response")
print(kind)
print(upcallInfo)
worked = True
n = Name("ccnx:/ccnx/ping")
i = Interest()
closure = MyClosure()
c = CCN()
res = c.expressInterest(n, closure, i)
print(res)
#causes crashes
c.run(10)
print("Ha!")
assert(worked)
class sequencer(Closure):
def __init__(self, configFileName):
self.appConfigFileName = configFileName
self.loadConfigFile()
self.handle = CCN()
self.getApplicationKey()
#nameCrypto
self.state = NameCrypto.new_state()
self.cryptoKey = NameCrypto.generate_application_key(self.cfg.fixtureKey, self.cfg.appName)
self.count = 0
def loadConfigFile(self):
command = "import "+self.appConfigFileName+" as appCfg"
exec(command)
self.appCfg = appCfg;
self.cfg = appCfg;
def getApplicationKey(self):
#print("getting application key for "+self.appCfg.appName)
key = Key()
keyFile = self.appCfg.keyFile
key.fromPEM(filename=keyFile)
self.appKey = key
self.key = key
def start(self):
#print "starting "+self.cfg.appName
self.startTime = time.time()
#self.play()
#self.send()
#self.discoProfile()
#self.disco()
#self.mobileDisco()
#self.discoArt()
#self.allWhite()
self.allBlack()
#self.spazz()
def spazz(self):
for i in range(1,500000):
self.allWhite()
self.allBlack()
def allWhite(self):
for d in self.cfg.names:
if d['name'] != "incandescent":
print d['name']
self.buildAndSendInterest(d['name'],255,255,255)
def allBlack(self):
for d in self.cfg.names:
if d['name'] != "incandescent":
print d['name']
self.buildAndSendInterest(d['name'],0,0,0)
self.buildAndSendArtInterest('incandescent',0,)
def disco(self):
print "fading..."
for d in self.cfg.names:
if d['name'] != "incandescent":
print d['name']
r = b = g = 0
#red
for i in range(0,85):
r=i
self.buildAndSendInterest(d['name'],r*3,g*3,b*3)
for i in range(0,85):
r=0
g=i
self.buildAndSendInterest(d['name'],r*3,g*3,b*3)
for i in range(0,85):
g=0
b=i
self.buildAndSendInterest(d['name'],r*3,g*3,b*3)
self.buildAndSendInterest(d['name'],0,0,0)
self.buildAndSendInterest(d['name'],255,255,255)
self.buildAndSendInterest(d['name'],0,0,0)
self.buildAndSendInterest(d['name'],255,255,255)
self.buildAndSendInterest(d['name'],0,0,0)
self.buildAndSendInterest(d['name'],0,0,0)
return
def discoProfile(self):
print "fading..."
for d in self.cfg.names:
if d['name'] != "incandescent":
print d['name']
r = b = g = 0
#red
for i in range(0,85):
r=i
self.buildAndSendInterest(d['name'],r*3,g*3,b*3)
for i in range(0,85):
r=0
g=i
self.buildAndSendInterest(d['name'],r*3,g*3,b*3)
for i in range(0,85):
g=0
b=i
self.buildAndSendInterest(d['name'],r*3,g*3,b*3)
self.buildAndSendInterest(d['name'],0,0,0)
self.buildAndSendInterest(d['name'],255,255,255)
self.buildAndSendInterest(d['name'],0,0,0)
self.buildAndSendInterest(d['name'],255,255,255)
self.buildAndSendInterest(d['name'],0,0,0)
self.buildAndSendInterest(d['name'],0,0,0)
print "DONE"
self.sendSignedInterest("whatever/profileStop/000000")
self.endTime = time.time()
print "total time is ",(self.endTime - self.startTime)
print "number of interests is ",self.count
print "average time per interest is ",((self.endTime - self.startTime)/self.count)
return
def mobileDisco(self):
print "fading around"
for i in range(0,85):
r = b = g = 0
#red
for i in range(0,85):
r=i
self.sendValToAllLights(r*3,g*3,b*3)
for i in range(0,85):
r=0
g=i
self.sendValToAllLights(r*3,g*3,b*3)
for i in range(0,85):
g=0
b=i
self.sendValToAllLights(r*3,g*3,b*3)
self.sendValToAllLights(0,0,0)
self.sendValToAllLights(255,255,255)
self.sendValToAllLights(0,0,0)
self.sendValToAllLights(255,255,255)
self.sendValToAllLights(0,0,0)
sys.exit()
def sendValToAllLights(self,r,g,b):
for d in self.cfg.names:
self.buildAndSendInterest(d['name'],r,g,b)
def discoArt(self):
print "fading..."
for d in self.cfg.names:
if d['name'] == "incandescent":
print d['name']
r = b = g = 0
#red
for i in range(0,250):
r=i
self.buildAndSendArtInterest(d['name'],r)
self.discoArt()
def hx(self, inum):
num = hex(inum)[2:]
if (len(num) == 1):
num = '0'+num
#print num
return str(num)
def buildAndSendInterest(self,device,r,g,b):
#rx = hex(r)[2:]
#gx = hex(g)[2:]
#bx = hex(b)[2:]
rx = self.hx(r)
gx = self.hx(g)
bx = self.hx(b)
#CLI = self.cfg.interestPrefix+device+"/rgb-8bit-hex/"+rx+gx+bx
CLI = device+"/setRGB/"+rx+gx+bx
#print CLI
self.sendSignedInterest(CLI)
#living-room-right-wall/rgb-8bit-hex/d2741d
#interestPrefix
#ccnx:/ndn/ucla.edu/apps/lighting/TV1/fixture/living-room-right-wall/rgb-8bit-hex/d2741d
def buildAndSendArtInterest(self,device,r):
rx = self.hx(r)
#gx = hex(g)[2:]
#bx = hex(b)[2:]
#rx = self.hx(r)
#CLI = self.cfg.interestPrefix+device+"/rgb-8bit-hex/"+rx+gx+bx
CLI = device+"/setBrightness/"+rx
#print CLI
self.sendSignedInterest(CLI)
#living-room-right-wall/rgb-8bit-hex/d2741d
#interestPrefix
#ccnx:/ndn/ucla.edu/apps/lighting/TV1/fixture/living-room-right-wall/rgb-8bit-hex/d2741d
def sendInterest(self,command):
n = Name(self.cfg.appPrefix)
print("\nInterest espressing for "+str(n))
n += command
#fullURI = self.cfg.interestPrefix + command
#print fullURI
i = Interest.Interest()
#n = Name.Name([fullURI]) #this does not parse correctly
#n = Name.Name(fullURI)
print("Interest sending to "+str(n))
co = self.handle.get(n,i,200)
if not not co:
#if co is not empty, print result for debugging
print("content: "+str(co.content))
def sendSignedInterest(self,command):
self.count = self.count +1
time.sleep(self.cfg.refreshInterval)
fullURI = self.cfg.appPrefix + command
#print fullURI
i = Interest()
#self.state = NameCrypto.new_state()
#build keyLocator to append to interest for NameCrypto on upcall
keyLoc = pyccn.KeyLocator(self.key)
keyLocStr = _pyccn.dump_charbuf(keyLoc.ccn_data)
nameAndKeyLoc = Name(str(fullURI))
#print("there are "+str(len(nameAndKeyLoc))+" components")
nameAndKeyLoc += keyLocStr
#print("there are "+str(len(nameAndKeyLoc))+" components after adding keyLocStr")
#symmetric
authName = NameCrypto.authenticate_command(self.state, nameAndKeyLoc, self.cfg.appName, self.cryptoKey)
#asymmetric
#authName = NameCrypto.authenticate_command_sig(self.state, nameAndKeyLoc, self.cfg.appName, self.key)
#print authName.components
co = self.handle.expressInterest(authName,self)
class TyzxServer(Closure):
def __init__(self, prefixstr ):
self.handle = CCN()
#XXX: temporary, until we allow fetching key from key storage
self.key = self.handle.getDefaultKey()
self.keylocator = KeyLocator(self.key)
self.prefix = Name(prefixstr)
# member_name = Name.Name(self.members_uri)
# member_name.appendKeyID(fix_digest(self.key.publicKeyID))
# self.member_message = self.publish(member_name, nick)
def listen(self):
#listen to requests in namespace
self.handle.setInterestFilter(self.prefix, self)
self.handle.run(-1)
def publish(self, name, content):
# Name
#print name
# SignedInfo
si = pyccn.SignedInfo()
#si.type = pyccn.CCN_CONTENT_DATA
si.type = 0x0C04C0 # content type
si.finalBlockID = b'\x00'
si.publisherPublicKeyDigest = self.key.publicKeyID
si.keyLocator = self.keylocator
si.freshnessSeconds = FRESHNESS_SECONDS
# ContentObject
co = ContentObject()
co.content = content
co.name = name
co.signedInfo = si
co.sign(self.key)
return co
def upcall(self, kind, upcallInfo):
global lasttime
if lasttime is None: # can't answer yet
return pyccn.RESULT_OK
if len(tyzxObjs.objs)<1:
return pyccn.RESULT_OK
interest = upcallInfo.Interest
#print "Interest", interest.name, time.time()
# CALL content matches interest to check exclusion on versions
#
#print interest.exclude
name = interest.name
#print name
if name==self.prefix: # root
#print "Request for root: %s" % str(name)
if interest.exclude is None:
freshids = tyzxObjs.objs.keys()[0:1]
else:
if len(interest.exclude.components) > 0:
ids = set(tyzxObjs.objs.keys())# new stuff we have
suffixes = set([int(str(s)[1:]) for s in interest.exclude.components])
freshids = list(ids.difference(suffixes)) # do we need this conversion?
#print "ids", ids
#print "suffixes", suffixes
#print "freshids", freshids
else:
freshids = tyzxObjs.objs.keys()[0:1]
if len(freshids)>0:
child = freshids[0]
else:
return pyccn.RESULT_OK # no new content
else: # should check what we're receiving! take next component
child = int(name.components[-1:][0]) # why not be able to do this on name?
#print "Request for child: %s" % child, time.time()
#print "child - ", child
if tyzxObjs.objs.has_key(child):
O = tyzxObjs.objs[child]
else:
# Don't want to respond with a nonexistent. NDN way is to not answer interest.
# If we've just started, we may not even know what the content store knows.
# But, we do want to answer "exits" that we know about.
#print "child", child, "is not present"
if tyzxObjs.objExits.has_key(child):
#print "child", child, "is exited"
O = tyzxObjs.objExits[child]
else:
return pyccn.RESULT_OK
#O = CompositeObject(BaseObject())
#O.time = lasttime.time
#O.id = int(child)
#O.status = "nonexistent"
msgname = Name(self.prefix)
msgname += str(child)
msgname.components.append(versionFromTime (O.time)) # should have msgname.append
#msgname.ccn_data_dirty=True - now handled within PyCCN
# need binary add component
self.message = self.publish(msgname, O.toJSON())
#print "Publishing", msgname, O.toJSON()
#print "Present:", tyzxObjs.objs.keys(), time.time()
self.handle.put(self.message)
return pyccn.RESULT_INTEREST_CONSUMED
return pyccn.RESULT_OK
from pyccn import CCN c = CCN() k = c.getDefaultKey()
class CcnxSocket(object):
''' A socket like handler for ccnx operations.
Runs a simple event loop and handles set interest filter, send interest,
and publish data.
Current only one ccnx handle is used, we can use multiple handles if needed,
but there is no such need as of now.
'''
__logger = Logger.get_logger('CcnxSocket')
def __init__(self, *args, **kwargs):
'''
Creates a socket. As of now, we try to get the ccnx key from the default location
'''
super(CcnxSocket, self).__init__()
self.ccnx_key = CCN.getDefaultKey()
self.ccnx_key_locator = pyccn.KeyLocator(self.ccnx_key)
self.ccnx_handle = CCN()
self.event_loop = CcnxLoop(self.ccnx_handle)
def get_signed_info(self, freshness):
'''
Get signed info to be included in the Content Object
Args:
freshness (int): the freshness of the Content Object in seconds
Returns:
a PyCCN.SignedInfo object
'''
si = pyccn.SignedInfo()
si.publisherPublicKeyDigest = self.ccnx_key.publicKeyID
si.type = pyccn.CONTENT_DATA
si.freshnessSeconds = freshness
si.keyLocator = self.ccnx_key_locator
return si
def get_pyccn_name(self, name):
'''Get a valid name for PyCCN. This is useful when the name string is encoded as unicode, as is the usual case in Python. However, PyCCN has problem handling unicode names, raising TypeError as a result.
Args:
name (str): the name string
Returns:
An ascii encoded name string
'''
if isinstance(name, unicode):
return Name(name.encode('ascii', 'ignore'))
else:
return Name(name)
def publish_content(self, name, content, freshness=5):
'''Publish the data as a Content Object
Args:
name (str): the name string
content (bytes): the data bytes
Kwargs:
freshness (int): the freshness in seconds for the Content Object
'''
co = ContentObject()
co.name = self.get_pyccn_name(name)
co.content = content
si = self.get_signed_info(freshness)
co.signedInfo = si
co.sign(self.ccnx_key)
self.ccnx_handle.put(co)
def send_interest(self, name, closure, template=None):
'''Send Interest
Args:
name (str): the name string
closure (PyCCN.Closure): the closure that includes the callbacks to be used by PyCCN for this Interest
Kwargs:
template (PyCCN.Interest): the template for the additional field to be carried in the Interest, such as ChildSelector, Lifetime, AnswerOrigin, etc..
'''
n = self.get_pyccn_name(name)
self.ccnx_handle.expressInterest(n, closure, template)
def register_prefix(self, prefix, closure):
'''Register the prefix under which the user wishes to receive Interests
Args:
prefix (str): the prefix name string
closure (PyCCN.Closure): the closure that includes the callbacks to be used by PyCCN when an Interest with such prefix comes
'''
p = self.get_pyccn_name(prefix)
self.ccnx_handle.setInterestFilter(p, closure)
def start(self):
'''Start the CcnxLoop
'''
start_new_thread(self.event_loop.run, ())
def stop(self):
'''Stop the CcnxLoop
'''
self.event_loop.stop()
from pyccn import CCN, _pyccn
from threading import Timer
from datetime import datetime
handle = _pyccn.create()
try:
_pyccn.run(handle, 100)
except _pyccn.CCNError:
pass
else:
raise AssertionError("ccn_run() should fail when not connected")
del handle
c = CCN()
c.run(0)
def change_timeout():
print("Changing timeout!")
c.setRunTimeout(1000)
t = Timer(0.1, change_timeout)
t.start()
org_start = datetime.now()
while True:
if (datetime.now() - org_start).seconds > 3:
raise AssertionError("setRunTimeout() failed")
si.finalBlockID = last_segment
si.publisherPublicKeyDigest = key.publicKeyID
si.keyLocator = Key.KeyLocator(key)
# ContentObject
co = ContentObject.ContentObject()
co.content = content
co.name = co_name
co.signedInfo = si
co.sign(key)
return co
name = Name.Name('/repo/upload/test')
name_v = Name.Name(name)
name_v.appendVersion()
handle = CCN.CCN()
key = handle.getDefaultKey()
last_seg = segment(9)
content = []
for i in range(10):
name_s = Name.Name(name_v)
name_s += segment(i)
co = publish(key, name_s, last_seg, "Segment: %d\n" % i)
content.append(co)
upload = RepoUpload(handle, name_v, content)
upload.start()
from pyccn import Interest, Name, Key, CCN, _pyccn
import datetime
k = CCN.getDefaultKey()
i = Interest()
i.name = Name('/hello/world')
i.minSuffixComponents = 2
i.maxSuffixComponents = 4
i.publisherPublicKeyDigest = k.publicKeyID
i.exclude = None
i.childSelector = 1
i.answerOriginKind = 4
i.scope = 2
i.interestLifetime = 30.0
i.nonce = b'abababa'
print(i)
print(i.ccn_data)
i2 = _pyccn.Interest_obj_from_ccn(i.ccn_data)
print(i2)
assert (i.name == i2.name)
assert (i.minSuffixComponents == i2.minSuffixComponents)
assert (i.maxSuffixComponents == i2.maxSuffixComponents)
assert (i.publisherPublicKeyDigest == i2.publisherPublicKeyDigest)
assert (i.exclude == i2.exclude)
assert (i.childSelector == i2.childSelector)
assert (i.scope == i2.scope)
assert (i.interestLifetime == i2.interestLifetime)
from pyccn import CCN, Name, Interest, Closure
from time import sleep
worked = False
class MyClosure(Closure):
def upcall(self, kind, upcallInfo):
global worked
print("Got response")
print(kind)
print(upcallInfo)
worked = True
n = Name("ccnx:/ccnx/ping")
i = Interest()
closure = MyClosure()
c = CCN()
res = c.expressInterest(n, closure, i)
print(res)
#causes crashes
c.run(10)
print("Ha!")
assert (worked)
from pyccn import CCN, Name
c = CCN()
print(c)
n = Name()
print(n)
n = Name("ccnx:/ccnx/ping")
print(n)
co = c.get(n)
print(co)
#this shouldn't cause segfault
print(n)
n = Name("ccnx:/ccnx/some_nonexisting_name")
co = c.get(n, None, 100)
#this shouldn't cause segfault!
print(co)
from pyccn import CCN, _pyccn
handle = _pyccn.create()
#this should fail
try:
_pyccn.disconnect(handle)
except _pyccn.CCNError:
pass
else:
raise AssertionError("Closing an unopened connection should fail")
_pyccn.connect(handle)
_pyccn.disconnect(handle)
try:
_pyccn.disconnect(handle)
except _pyccn.CCNError:
pass
else:
raise AssertionError("Closing handle twice shouldn't work")
del handle
c = CCN()
_pyccn.disconnect(c.ccn_data)
del c
#block_size = 1048576
#block_size = 128 * 4096
#fi = open(file, "r")
#fi.seek(100*1024*1024)
#def block():
# global fi, position, block_size
# data = fi.read(block_size)
# return data
import struct, vlc_access
from pyccn import *
h = CCN.CCN()
#base = Name.Name('/movie/%FD%04%E0%ACL%97%60')
base = Name.Name('/testmovie')
def segment(segment):
return b'\x00' + struct.pack('!Q', segment).lstrip('\x00')
def getSegment(seg):
global h, base
name = Name.Name(base)
name += segment(seg)
print "Requesting: %s" % name
co = None
import pyccn
from pyccn import CCN, Name, Interest, ContentObject, SignedInfo, Key, KeyLocator, Closure
#from threading import Timer
k = CCN.getDefaultKey()
kl = KeyLocator(k)
n = Name("/forty/two")
class SenderClosure(Closure):
def upcall(self, kind, upcallInfo):
global sender_handle, n, k, kl
print("Sender closure:")
print(upcallInfo)
co = ContentObject()
co.name = Name(n)
co.content = "Frou"
si = SignedInfo()
si.publisherPublicKeyDigest = k.publicKeyID
si.type = pyccn.CONTENT_DATA
si.freshnessSeconds = 5
si.keyLocator = kl
co.signedInfo = si
co.sign(k)
r = sender_handle.put(co)
print("put(co) = ", r)
class CcnxSocket(object):
''' A socket like handler for ccnx operations.
Runs a simple event loop and handles set interest filter, send interest,
and publish data.
Current only one ccnx handle is used, we can use multiple handles if needed,
but there is no such need as of now.
'''
__logger = Logger.get_logger('CcnxSocket')
def __init__(self, *args, **kwargs):
'''
Creates a socket. As of now, we try to get the ccnx key from the default location
'''
super(CcnxSocket, self).__init__()
self.ccnx_key = CCN.getDefaultKey()
self.ccnx_key_locator = pyccn.KeyLocator(self.ccnx_key)
self.ccnx_handle = CCN()
self.event_loop = CcnxLoop(self.ccnx_handle)
def get_signed_info(self, freshness):
'''
Get signed info to be included in the Content Object
Args:
freshness (int): the freshness of the Content Object in seconds
Returns:
a PyCCN.SignedInfo object
'''
si = pyccn.SignedInfo()
si.publisherPublicKeyDigest = self.ccnx_key.publicKeyID
si.type = pyccn.CONTENT_DATA
si.freshnessSeconds = freshness
si.keyLocator = self.ccnx_key_locator
return si
def get_pyccn_name(self, name):
'''Get a valid name for PyCCN. This is useful when the name string is encoded as unicode, as is the usual case in Python. However, PyCCN has problem handling unicode names, raising TypeError as a result.
Args:
name (str): the name string
Returns:
An ascii encoded name string
'''
if isinstance(name, unicode):
return Name(name.encode('ascii', 'ignore'))
else:
return Name(name)
def publish_content(self, name, content, freshness = 5):
'''Publish the data as a Content Object
Args:
name (str): the name string
content (bytes): the data bytes
Kwargs:
freshness (int): the freshness in seconds for the Content Object
'''
co = ContentObject()
co.name = self.get_pyccn_name(name)
co.content = content
si = self.get_signed_info(freshness)
co.signedInfo = si
co.sign(self.ccnx_key)
self.ccnx_handle.put(co)
def send_interest(self, name, closure, template = None):
'''Send Interest
Args:
name (str): the name string
closure (PyCCN.Closure): the closure that includes the callbacks to be used by PyCCN for this Interest
Kwargs:
template (PyCCN.Interest): the template for the additional field to be carried in the Interest, such as ChildSelector, Lifetime, AnswerOrigin, etc..
'''
n = self.get_pyccn_name(name)
self.ccnx_handle.expressInterest(n, closure, template)
def register_prefix(self, prefix, closure):
'''Register the prefix under which the user wishes to receive Interests
Args:
prefix (str): the prefix name string
closure (PyCCN.Closure): the closure that includes the callbacks to be used by PyCCN when an Interest with such prefix comes
'''
p = self.get_pyccn_name(prefix)
self.ccnx_handle.setInterestFilter(p, closure)
def start(self):
'''Start the CcnxLoop
'''
start_new_thread(self.event_loop.run, ())
def stop(self):
'''Stop the CcnxLoop
'''
self.event_loop.stop()
import time, struct
import pyccn
from pyccn import CCN, Name, Interest, Key, ContentObject, Closure, KeyLocator, ExclusionFilter
from Tyzx import CompositeObject, BaseObject
prefix = "ccnx:/ndn/ucla.edu/apps/tv1/occupants"
DISCOVER_INTEREST_PERIOD = 0.250 # How often
UPDATE_INTEREST_PERIOD = 0.250
CCN_WAIT_TIME_MS = 1
tyzxObjects = {}
oldObjects = set() # still may be in the content store
ccn = CCN()
interestDiscover = Interest()
interestDiscover.name = Name(prefix)
interestDiscover.minSuffixComponents = 2 # occupant id + the implicit digest at a minimum
interestUpdate = Interest()
interestUpdate.minSuffixComponents = 2 # time (version) + the implicit digest
interestUpdate.childSelector = 1 # rightmost child
#interestUpdate.interestLifetime = ????
lastdiscovertime = 0
def versionFromTime(t):
bintime = struct.pack("!Q", int(t * 4096 + 0.5))
version = bintime.lstrip(b'\x00')
print(os.getcwd())
root = os.path.join("tmp")
private_pem1 = os.path.join(root, 'private1.pem')
public_pem1 = os.path.join(root, 'public1.pem')
private_pem2 = os.path.join(root, 'private2.pem')
public_pem2 = os.path.join(root, 'public2.pem')
def rm_files(*list):
for file in list:
if os.path.exists(file):
os.remove(file)
rm_files(private_pem1, public_pem1, private_pem2, public_pem2)
k = CCN.getDefaultKey()
k.privateToPEM(filename=private_pem1)
k.publicToPEM(filename=public_pem1)
k2 = Key()
k2.fromPEM(filename=private_pem1)
k2.privateToPEM(filename=private_pem2)
k2.publicToPEM(filename=public_pem2)
assert(filecmp.cmp(private_pem1, private_pem2))
assert(filecmp.cmp(public_pem1, public_pem2))
print(b64encode(k.publicKeyID))
print(b64encode(k2.publicKeyID))
assert(k.publicKeyID == k2.publicKeyID)
import time, struct
import pyccn
from pyccn import CCN, Name, Interest, Key, ContentObject, Closure, KeyLocator, ExclusionFilter
from Tyzx import CompositeObject, BaseObject
prefix = "ccnx:/ndn/ucla.edu/apps/tv1/occupants"
DISCOVER_INTEREST_PERIOD = 0.250 # How often
UPDATE_INTEREST_PERIOD = 0.250
CCN_WAIT_TIME_MS = 1
tyzxObjects = {}
oldObjects = set() # still may be in the content store
ccn = CCN()
interestDiscover = Interest()
interestDiscover.name = Name(prefix)
interestDiscover.minSuffixComponents = 2 # occupant id + the implicit digest at a minimum
interestUpdate = Interest()
interestUpdate.minSuffixComponents = 2 # time (version) + the implicit digest
interestUpdate.childSelector = 1 # rightmost child
#interestUpdate.interestLifetime = ????
lastdiscovertime = 0
def versionFromTime(t):
bintime = struct.pack("!Q", int(t * 4096 + 0.5))
version = bintime.lstrip(b'\x00')
return b'\xfd' + version
