+#!/usr/bin/env python
+#
+# Electrum - lightweight Bitcoin client
+# Copyright (C) 2014 Thomas Voegtlin
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
import hashlib
import httplib
import os.path
import time
import traceback
import urllib2
+import urlparse
+
try:
import paymentrequest_pb2
except:
- print "protoc --proto_path=lib/ --python_out=lib/ lib/paymentrequest.proto"
- raise Exception()
-
-import urlparse
-import requests
-from M2Crypto import X509
+ sys.exit("Error: could not find paymentrequest_pb2.py. Create it with 'protoc --proto_path=lib/ --python_out=lib/ lib/paymentrequest.proto'")
-from bitcoin import is_valid
-import urlparse
+try:
+ import requests
+except ImportError:
+ sys.exit("Error: requests does not seem to be installed. Try 'sudo pip install requests'")
+import bitcoin
import util
import transaction
+import x509
REQUEST_HEADERS = {'Accept': 'application/bitcoin-paymentrequest', 'User-Agent': 'Electrum'}
ACK_HEADERS = {'Content-Type':'application/bitcoin-payment','Accept':'application/bitcoin-paymentack','User-Agent':'Electrum'}
-ca_path = os.path.expanduser("~/.electrum/ca/ca-bundle.crt")
+
ca_list = {}
-try:
- with open(ca_path, 'r') as ca_f:
- c = ""
- for line in ca_f:
- if line == "-----BEGIN CERTIFICATE-----\n":
- c = line
- else:
- c += line
- if line == "-----END CERTIFICATE-----\n":
- x = X509.load_cert_string(c)
- ca_list[x.get_fingerprint()] = x
-except Exception:
- print "ERROR: Could not open %s"%ca_path
- print "ca-bundle.crt file should be placed in ~/.electrum/ca/ca-bundle.crt"
- print "Documentation on how to download or create the file here: http://curl.haxx.se/docs/caextract.html"
- print "Payment will continue with manual verification."
- raise Exception()
+ca_path = requests.certs.where()
-class PaymentRequest:
- def __init__(self, url):
- self.url = url
- self.outputs = []
- self.error = ""
- def get_amount(self):
- return sum(map(lambda x:x[1], self.outputs))
+def load_certificates():
+ try:
+ ca_f = open(ca_path, 'r')
+ except Exception:
+ print "ERROR: Could not open %s"%ca_path
+ print "ca-bundle.crt file should be placed in ~/.electrum/ca/ca-bundle.crt"
+ print "Documentation on how to download or create the file here: http://curl.haxx.se/docs/caextract.html"
+ print "Payment will continue with manual verification."
+ return False
+ c = ""
+ for line in ca_f:
+ if line == "-----BEGIN CERTIFICATE-----\n":
+ c = line
+ else:
+ c += line
+ if line == "-----END CERTIFICATE-----\n":
+ x = x509.X509()
+ try:
+ x.parse(c)
+ except Exception as e:
+ util.print_error("cannot parse cert:", e)
+ ca_list[x.getFingerprint()] = x
+ ca_f.close()
+ util.print_error("%d certificates"%len(ca_list))
+ return True
+load_certificates()
- def verify(self):
- u = urlparse.urlparse(self.url)
- self.domain = u.netloc
+
+class PaymentRequest:
+ def __init__(self, config):
+ self.config = config
+ self.outputs = []
+ self.error = ""
+ self.dir_path = os.path.join( self.config.path, 'requests')
+ if not os.path.exists(self.dir_path):
+ os.mkdir(self.dir_path)
+
+ def read(self, url):
+ self.url = url
+ u = urlparse.urlparse(url)
+ self.domain = u.netloc
try:
connection = httplib.HTTPConnection(u.netloc) if u.scheme == 'http' else httplib.HTTPSConnection(u.netloc)
connection.request("GET",u.geturl(), headers=REQUEST_HEADERS)
- resp = connection.getresponse()
+ response = connection.getresponse()
except:
self.error = "cannot read url"
return
- paymntreq = paymentrequest_pb2.PaymentRequest()
try:
- r = resp.read()
- paymntreq.ParseFromString(r)
+ r = response.read()
+ except:
+ self.error = "cannot read"
+ return
+
+ self.id = bitcoin.sha256(r)[0:16].encode('hex')
+ filename = os.path.join(self.dir_path, self.id)
+ with open(filename,'w') as f:
+ f.write(r)
+
+ return self.parse(r)
+
+
+ def get_status(self):
+ if self.error:
+ return self.error
+ else:
+ return self.status
+
+
+ def read_file(self, key):
+ filename = os.path.join(self.dir_path, key)
+ with open(filename,'r') as f:
+ r = f.read()
+
+ assert key == bitcoin.sha256(r)[0:16].encode('hex')
+ self.id = key
+ self.parse(r)
+
+
+ def parse(self, r):
+ try:
+ self.data = paymentrequest_pb2.PaymentRequest()
+ self.data.ParseFromString(r)
except:
self.error = "cannot parse payment request"
return
- sig = paymntreq.signature
- if not sig:
+
+ def verify(self):
+
+ if not ca_list:
+ self.error = "Trusted certificate authorities list not found"
+ return False
+
+ paymntreq = self.data
+ if not paymntreq.signature:
self.error = "No signature"
return
cert.ParseFromString(paymntreq.pki_data)
cert_num = len(cert.certificate)
- x509_1 = X509.load_cert_der_string(cert.certificate[0])
- if self.domain != x509_1.get_subject().CN:
- validcert = False
- try:
- SANs = x509_1.get_ext("subjectAltName").get_value().split(",")
- for s in SANs:
- s = s.strip()
- if s.startswith("DNS:") and s[4:] == self.domain:
- validcert = True
- print "Match SAN DNS"
- elif s.startswith("IP:") and s[3:] == self.domain:
- validcert = True
- print "Match SAN IP"
- elif s.startswith("email:") and s[6:] == self.domain:
- validcert = True
- print "Match SAN email"
- except Exception, e:
- print "ERROR: No SAN data"
- if not validcert:
- ###TODO: check for wildcards
- self.error = "ERROR: Certificate Subject Domain Mismatch and SAN Mismatch"
- return
-
- x509 = []
- CA_OU = ''
-
- if cert_num > 1:
- for i in range(cert_num - 1):
- x509.append(X509.load_cert_der_string(cert.certificate[i+1]))
- if x509[i].check_ca() == 0:
+ x509_chain = []
+ for i in range(cert_num):
+ x = x509.X509()
+ x.parseBinary(bytearray(cert.certificate[i]))
+ x.slow_parse()
+ x509_chain.append(x)
+ if i == 0:
+ try:
+ x.check_date()
+ x.check_name(self.domain)
+ except Exception as e:
+ self.error = str(e)
+ return
+ else:
+ if not x.check_ca():
self.error = "ERROR: Supplied CA Certificate Error"
return
- for i in range(cert_num - 1):
- if i == 0:
- if x509_1.verify(x509[i].get_pubkey()) != 1:
- self.error = "ERROR: Certificate not Signed by Provided CA Certificate Chain"
- return
- else:
- if x509[i-1].verify(x509[i].get_pubkey()) != 1:
- self.error = "ERROR: CA Certificate not Signed by Provided CA Certificate Chain"
- return
-
- supplied_CA_fingerprint = x509[cert_num-2].get_fingerprint()
- supplied_CA_CN = x509[cert_num-2].get_subject().CN
- CA_match = False
- x = ca_list.get(supplied_CA_fingerprint)
- if x:
- CA_OU = x.get_subject().OU
- CA_match = True
- if x.get_subject().CN != supplied_CA_CN:
- print "ERROR: Trusted CA CN Mismatch; however CA has trusted fingerprint"
- print "Payment will continue with manual verification."
+ if not cert_num > 1:
+ self.error = "ERROR: CA Certificate Chain Not Provided by Payment Processor"
+ return False
+
+ for i in range(1, cert_num):
+ x = x509_chain[i]
+ prev_x = x509_chain[i-1]
+
+ algo, sig, data = prev_x.extract_sig()
+ sig = bytearray(sig[5:])
+ pubkey = x.publicKey
+ if algo.getComponentByName('algorithm') == x509.ALGO_RSA_SHA1:
+ verify = pubkey.hashAndVerify(sig, data)
+ elif algo.getComponentByName('algorithm') == x509.ALGO_RSA_SHA256:
+ hashBytes = bytearray(hashlib.sha256(data).digest())
+ prefixBytes = bytearray([0x30,0x31,0x30,0x0d,0x06,0x09,0x60,0x86,0x48,0x01,0x65,0x03,0x04,0x02,0x01,0x05,0x00,0x04,0x20])
+ verify = pubkey.verify(sig, prefixBytes + hashBytes)
else:
- print "ERROR: Supplied CA Not Found in Trusted CA Store."
+ self.error = "Algorithm not supported"
+ util.print_error(self.error, algo.getComponentByName('algorithm'))
+ return
+
+ if not verify:
+ self.error = "Certificate not Signed by Provided CA Certificate Chain"
+ return
+
+ ca = x509_chain[cert_num-1]
+ supplied_CA_fingerprint = ca.getFingerprint()
+ supplied_CA_names = ca.extract_names()
+ CA_OU = supplied_CA_names['OU']
+
+ x = ca_list.get(supplied_CA_fingerprint)
+ if x:
+ x.slow_parse()
+ names = x.extract_names()
+ CA_match = True
+ if names['CN'] != supplied_CA_names['CN']:
+ print "ERROR: Trusted CA CN Mismatch; however CA has trusted fingerprint"
print "Payment will continue with manual verification."
else:
- self.error = "ERROR: CA Certificate Chain Not Provided by Payment Processor"
- return False
+ CA_match = False
+ pubkey0 = x509_chain[0].publicKey
+ sig = paymntreq.signature
paymntreq.signature = ''
s = paymntreq.SerializeToString()
- pubkey_1 = x509_1.get_pubkey()
+ sigBytes = bytearray(sig)
+ msgBytes = bytearray(s)
if paymntreq.pki_type == "x509+sha256":
- pubkey_1.reset_context(md="sha256")
+ hashBytes = bytearray(hashlib.sha256(msgBytes).digest())
+ prefixBytes = bytearray([0x30,0x31,0x30,0x0d,0x06,0x09,0x60,0x86,0x48,0x01,0x65,0x03,0x04,0x02,0x01,0x05,0x00,0x04,0x20])
+ verify = pubkey0.verify(sigBytes, prefixBytes + hashBytes)
elif paymntreq.pki_type == "x509+sha1":
- pubkey_1.reset_context(md="sha1")
+ verify = pubkey0.hashAndVerify(sigBytes, msgBytes)
else:
self.error = "ERROR: Unsupported PKI Type for Message Signature"
return False
- pubkey_1.verify_init()
- pubkey_1.verify_update(s)
- if pubkey_1.verify_final(sig) != 1:
+ if not verify:
self.error = "ERROR: Invalid Signature for Payment Request Data"
return False
### SIG Verified
-
- self.payment_details = pay_det = paymentrequest_pb2.PaymentDetails()
- pay_det.ParseFromString(paymntreq.serialized_payment_details)
-
- if pay_det.expires and pay_det.expires < int(time.time()):
- self.error = "ERROR: Payment Request has Expired."
- return False
+ self.details = pay_det = paymentrequest_pb2.PaymentDetails()
+ self.details.ParseFromString(paymntreq.serialized_payment_details)
for o in pay_det.outputs:
addr = transaction.get_address_from_output_script(o.script)[1]
- self.outputs.append( (addr, o.amount) )
+ self.outputs.append( ('address', addr, o.amount) )
- self.memo = pay_det.memo
+ self.memo = self.details.memo
if CA_match:
self.status = 'Signed by Trusted CA:\n' + CA_OU
+ else:
+ self.status = "Supplied CA Not Found in Trusted CA Store."
+
+ self.payment_url = self.details.payment_url
- print "payment url", pay_det.payment_url
return True
+ def has_expired(self):
+ return self.details.expires and self.details.expires < int(time.time())
+
+ def get_expiration_date(self):
+ return self.details.expires
+
+ def get_amount(self):
+ return sum(map(lambda x:x[2], self.outputs))
+ def get_domain(self):
+ return self.domain
+
+ def get_memo(self):
+ return self.memo
+
+ def get_id(self):
+ return self.id
+
+ def get_outputs(self):
+ return self.outputs[:]
def send_ack(self, raw_tx, refund_addr):
- pay_det = self.payment_details
- if not pay_det.payment_url:
+ pay_det = self.details
+ if not self.details.payment_url:
return False, "no url"
paymnt = paymentrequest_pb2.Payment()
paymnt.transactions.append(raw_tx)
ref_out = paymnt.refund_to.add()
- ref_out.script = transaction.Transaction.pay_script(refund_addr)
+ ref_out.script = transaction.Transaction.pay_script('address', refund_addr)
paymnt.memo = "Paid using Electrum"
pm = paymnt.SerializeToString()
-
if __name__ == "__main__":
try:
uri = sys.argv[1]
except:
print "usage: %s url"%sys.argv[0]
- print "example url: \"bitcoin:mpu3yTLdqA1BgGtFUwkVJmhnU3q5afaFkf?r=https%3A%2F%2Fbitcoincore.org%2F%7Egavin%2Ff.php%3Fh%3D2a828c05b8b80dc440c80a5d58890298&amount=1\""
+ print "example url: \"novacoin:4LJgtjeXMjLA6nVzYMJh1LEkwxMFsRtnP4?amount=0.0018&r=https%3A%2F%2Fsite.com%2F\""
sys.exit(1)
- address, amount, label, message, request_url, url = util.parse_url(uri)
- pr = PaymentRequest(request_url)
+ address, amount, label, message, request_url = util.parse_URI(uri)
+ from simple_config import SimpleConfig
+ config = SimpleConfig()
+ pr = PaymentRequest(config)
+ pr.read(request_url)
if not pr.verify():
+ print 'verify failed'
+ print pr.error
sys.exit(1)
print 'Payment Request Verified Domain: ', pr.domain
print 'outputs', pr.outputs
- print 'Payment Memo: ', pr.payment_details.memo
+ print 'Payment Memo: ', pr.details.memo
tx = "blah"
pr.send_ack(tx, refund_addr = "1vXAXUnGitimzinpXrqDWVU4tyAAQ34RA")
git://git.novaco.in / electrum-nvc.git / blobdiff