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#!/usr/bin/python
import sys
import os
import re
import subprocess
import shlex
import unittest
from nss.error import NSPRError
import nss.error as nss_error
import nss.nss as nss
#-------------------------------------------------------------------------------
verbose = False
db_name = 'sql:pki'
db_passwd = 'db_passwd'
pk12_passwd = 'pk12_passwd'
cert_nickname = 'test_user'
pk12_filename = '%s.p12' % cert_nickname
exported_pk12_filename = 'exported_%s' % pk12_filename
#-------------------------------------------------------------------------------
class CmdError(Exception):
def __init__(self, cmd_args, returncode, message=None, stdout=None, stderr=None):
self.cmd_args = cmd_args
self.returncode = returncode
if message is None:
self.message = 'Failed error=%s, ' % (returncode)
if stderr:
self.message += '"%s", ' % stderr
self.message += 'args=%s' % (cmd_args)
else:
self.message = message
self.stdout = stdout
self.stderr = stderr
def __str__(self):
return self.message
def run_cmd(cmd_args, input=None):
try:
p = subprocess.Popen(cmd_args,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
stdout, stderr = p.communicate(input)
returncode = p.returncode
if returncode != 0:
raise CmdError(cmd_args, returncode,
'failed %s' % (', '.join(cmd_args)),
stdout, stderr)
return stdout, stderr
except OSError as e:
raise CmdError(cmd_args, e.errno, stderr=str(e))
#-------------------------------------------------------------------------------
def password_callback(slot, retry):
return db_passwd
def nickname_collision_callback(old_nickname, cert):
cancel = False
new_nickname = cert.make_ca_nickname()
return new_nickname, cancel
def get_cert_der_from_db(nickname):
cmd_args = ['/usr/bin/certutil',
'-d', db_name,
'-L',
'-n', nickname]
try:
stdout, stderr = run_cmd(cmd_args)
except CmdError as e:
if e.returncode == 255 and 'not found' in e.stderr:
return None
else:
raise
return stdout
def delete_cert_from_db(nickname):
cmd_args = ['/usr/bin/certutil',
'-d', db_name,
'-D',
'-n', nickname]
run_cmd(cmd_args)
def create_pk12(nickname, filename):
cmd_args = ['/usr/bin/pk12util',
'-o', filename,
'-n', nickname,
'-d', db_name,
'-K', db_passwd,
'-W', pk12_passwd]
run_cmd(cmd_args)
def list_pk12(filename):
cmd_args = ['/usr/bin/pk12util',
'-l', filename,
'-W', pk12_passwd]
stdout, stderr = run_cmd(cmd_args)
return stdout
def strip_key_from_pk12_listing(text):
match = re.search(r'^Certificate:$', text, re.MULTILINE)
if not match:
raise ValueError('Could not file Key section in pk12 listing')
return text[match.start(0):]
#-------------------------------------------------------------------------------
def load_tests(loader, tests, pattern):
suite = unittest.TestSuite()
tests = loader.loadTestsFromNames(['test_pkcs12.TestPKCS12Decoder.test_read',
'test_pkcs12.TestPKCS12Decoder.test_import',
'test_pkcs12.TestPKCS12Export.test_export',
])
suite.addTests(tests)
return suite
#-------------------------------------------------------------------------------
class TestPKCS12Decoder(unittest.TestCase):
def setUp(self):
nss.nss_init_read_write(db_name)
nss.set_password_callback(password_callback)
nss.pkcs12_set_nickname_collision_callback(nickname_collision_callback)
nss.pkcs12_enable_all_ciphers()
self.cert_der = get_cert_der_from_db(cert_nickname)
if self.cert_der is None:
raise ValueError('cert with nickname "%s" not in database "%s"' % (cert_nickname, db_name))
def tearDown(self):
nss.nss_shutdown()
def test_read(self):
if verbose: print "test_read"
create_pk12(cert_nickname, pk12_filename)
slot = nss.get_internal_key_slot()
pkcs12 = nss.PKCS12Decoder(pk12_filename, pk12_passwd, slot)
self.assertEqual(len(pkcs12), 3)
cert_bag_count = 0
key_seen = None
for bag in pkcs12:
if bag.type == nss.SEC_OID_PKCS12_V1_CERT_BAG_ID:
self.assertIsNone(bag.shroud_algorithm_id)
cert_bag_count += 1
if key_seen is None:
key_seen = bag.has_key
elif key_seen is True:
self.assertIs(bag.has_key, False)
elif key_seen is False:
self.assertIs(bag.has_key, True)
else:
self.fail("unexpected has_key for bag type = %s(%d)" % (bag.has_key, nss.oid_tag_name(bag.type), bag.type))
elif bag.type == nss.SEC_OID_PKCS12_V1_PKCS8_SHROUDED_KEY_BAG_ID:
self.assertIsInstance(bag.shroud_algorithm_id, nss.AlgorithmID)
self.assertIs(bag.has_key, False)
else:
self.fail("unexpected bag type = %s(%d)" % (nss.oid_tag_name(bag.type), bag.type))
self.assertEqual(cert_bag_count, 2)
def test_import(self):
if verbose: print "test_import"
delete_cert_from_db(cert_nickname)
self.assertEqual(get_cert_der_from_db(cert_nickname), None)
slot = nss.get_internal_key_slot()
pkcs12 = nss.PKCS12Decoder(pk12_filename, pk12_passwd, slot)
slot.authenticate()
pkcs12.database_import()
cert_der = get_cert_der_from_db(cert_nickname)
self.assertEqual(cert_der, self.cert_der)
#-------------------------------------------------------------------------------
class TestPKCS12Export(unittest.TestCase):
def setUp(self):
nss.nss_init(db_name)
nss.set_password_callback(password_callback)
nss.pkcs12_enable_all_ciphers()
self.cert_der = get_cert_der_from_db(cert_nickname)
if self.cert_der is None:
raise ValueError('cert with nickname "%s" not in database "%s"' % (cert_nickname, db_name))
def tearDown(self):
nss.nss_shutdown()
def test_export(self):
if verbose: print "test_export"
pkcs12_data = nss.pkcs12_export(cert_nickname, pk12_passwd)
with open(exported_pk12_filename, 'w') as f:
f.write(pkcs12_data)
pk12_listing = list_pk12(pk12_filename)
pk12_listing = strip_key_from_pk12_listing(pk12_listing)
exported_pk12_listing = list_pk12(exported_pk12_filename)
exported_pk12_listing = strip_key_from_pk12_listing(exported_pk12_listing)
self.assertEqual(pk12_listing, exported_pk12_listing)
if __name__ == '__main__':
unittest.main()
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