def destroyChain():
if settings.nodePid == 0:
command = ["rm", "-r" , settings.pathToHiddenMultichain + "/" + settings.chainName]
subprocess.call(command)
return settings.corsResponse(settings.chainName + " deleted.")
else:
return settings.corsResponse("Stop the connection before deleting the chain!")
def revokeCertificate():
revocationForm = request.get_json()
if revocationForm['txid'] != '':
revocationTransaction = settings.multichainNode.createrawtransaction(
[{
"txid": revocationForm['txid'],
"vout": 0
}], {
"1XXXXXXXCuXXXXXXdqXXXXXXV5XXXXXXZFb4eK": {
settings.diplomaName: 1
}
}, [], 'sign')
print revocationTransaction
revocationForm['hex'] = revocationTransaction['hex']
revocationForm['txid'] = ''
revocationResponse = requests.delete(revocationForm['url'],
json=revocationForm).content
return settings.corsResponse(json.dumps(revocationResponse))
if revocationForm['hex']:
signedRevocationTransaction = settings.multichainNode.signrawtransaction(
revocationForm['hex'])
if signedRevocationTransaction['complete'] == True:
publish = settings.multichainNode.sendrawtransaction(
signedRevocationTransaction['hex'])
return settings.corsResponse('Certificate succesfuly revoked')
else:
return settings.corsResponse('Error')
return settings.corsResponse('Error')
def verifyCertificate():
verificationForm = request.get_json()
transaction = verificationForm['txid']
transactionOutput = settings.multichainNode.gettxout(transaction,0)
plainCertificate = verificationForm['cert']
sha256 = hashlib.sha256()
sha256.update(plainCertificate)
myHashedCertificate = sha256.hexdigest()
if transactionOutput:
hashedCertificate = settings.multichainNode.gettxoutdata(transaction,1)
if hashedCertificate == myHashedCertificate:
transactionData = settings.multichainNode.getrawtransaction(transaction,1)
transactionDetails = {}
transactionDetails['Message'] = 'The certificate is valid'
transactionDetails['Owner'] = transactionData['vout'][0]['scriptPubKey']['addresses']
transactionDetails['Sender'] = transactionData['vout'][2]['scriptPubKey']['addresses']
transactionDetails['HashedCertificate'] = hashedCertificate
return settings.corsResponse(json.dumps(transactionDetails))
else:
return settings.corsResponse('The certificates do not match')
else:
return settings.corsResponse('The certificate was revoked')
def requestCertificate():
settings.initMultichainNode()
requestForm = request.get_json()
url = 'http://' + requestForm['ip'] + '/v1.1/offchain/certificate'
requestCertResponse = requests.get(url, json=requestForm).content
requestCertResponse = json.loads(requestCertResponse)
#extract the hash of the cetificate from transaction
if 'txid' in requestCertResponse.keys():
return settings.corsResponse(json.dumps(requestCertResponse))
decodedTransaction = settings.multichainNode.decoderawtransaction(
requestCertResponse['transaction'])
hashedCertificate = decodedTransaction['vout'][1]['data'][0]
#validate certificate
plainCertificate = requestCertResponse['cert']
sha256 = hashlib.sha256()
sha256.update(plainCertificate)
myHashedCertificate = sha256.hexdigest()
if myHashedCertificate == hashedCertificate:
return settings.corsResponse(json.dumps(requestCertResponse))
else:
return settings.corsResponse("The certificates do not match")
def startChain():
if settings.nodePid == 0:
command = [
settings.pathToMultichain + "/multichaind", "-daemon",
settings.nodeAddress
]
proc = subprocess.Popen(command)
settings.nodePid = proc.pid
if settings.nodePid == 0:
return settings.corsResponse(
"Something went wrong when trying to start the chain!")
else:
return settings.corsResponse("Node running.")
else:
return settings.corsResponse(settings.killNode())
def createChain():
parameter = request.get_json()
settings.updateChainName(parameter['chainName'])
# to verify if some of the params received are in the default params
command = (
[settings.pathToMultichain + "/multichain-util"]
+ [ "create" , settings.chainName]
+ parameter['params']
+ settings.defaultBlockchainParamsList
)
output = subprocess.Popen(command, stdout=subprocess.PIPE).communicate()[0]
return settings.corsResponse(output)
def publishCertificate():
settings.initMultichainNode()
publishForm = request.get_json()
signedTransaction = settings.multichainNode.signrawtransaction(
publishForm['transaction'])['hex']
url = 'http://' + publishForm['ip'] + '/v1.1/offchain/certificate'
publishResponse = requests.post(url,
json={
'hex': signedTransaction,
'pass': publishForm['pass']
}).content
return settings.corsResponse(publishResponse)
def createSubscripton():
settings.initMultichainNode()
subscriptionForm = request.get_json()
subscriptionForm['address'] = settings.myAddress
subscriptionForm['pubKey'] = settings.myPubKey
url = 'http://' + subscriptionForm['ip'] + '/v1.1/actor'
subscriptionResponse = requests.post(url, json=subscriptionForm).content
subscriptionResponse = json.loads(subscriptionResponse)
print subscriptionResponse
if 'diploma' in subscriptionResponse.keys():
settings.diplomaName = subscriptionResponse['diploma']
multisigAddress = settings.multichainNode.addmultisigaddress(
2, [subscriptionResponse['pubkey'], settings.myPubKey])
settings.multichainNode.importaddress(multisigAddress, 'false')
settings.subscriptionMultisig = multisigAddress
return settings.corsResponse('You were accepted. Your multisig: ' +
multisigAddress)
def getNodeAddress():
settings.initMultichainNode()
return settings.corsResponse(
settings.multichainNode.getinfo()['nodeaddress'])
def connectToExistingChain():
parameter = request.get_json()
settings.nodeAddress = parameter
settings.chainName = parameter.split("@")[0]
return settings.corsResponse(parameter)
