def test_sign(self):
data = "Hello World!"
for algorithm, hash_method in (
("rsa-sha1", hashlib.sha1,),
("rsa-sha256", hashlib.sha256,),
):
stream = MemoryStream(data)
headers = Headers()
headers.addRawHeader("Originator", "mailto:[email protected]")
headers.addRawHeader("Recipient", "mailto:[email protected]")
headers.setHeader("Content-Type", MimeType("text", "calendar", **{"component": "VEVENT", "charset": "utf-8"}))
request = DKIMRequest("POST", "/", headers, stream, "example.com", "dkim", self.private_keyfile, algorithm, ("Originator", "Recipient", "Content-Type",), True, True, True, 3600)
result = (yield request.sign())
# Manually create what should be the correct thing to sign and make sure signatures match
bodyhash = base64.b64encode(hash_method(DKIMUtils.canonicalizeBody(data)).digest())
sign_this = """originator:mailto:[email protected]
recipient:mailto:[email protected]
content-type:%s
ischedule-version:1.0
ischedule-message-id:%s
dkim-signature:v=1; d=example.com; s=dkim; t=%s; x=%s; a=%s; q=private-exchange:http/well-known:dns/txt; c=ischedule-relaxed/simple; h=Originator:Recipient:Content-Type:iSchedule-Version:iSchedule-Message-ID; bh=%s; b=""".replace("\n", "\r\n") % (headers.getRawHeaders("Content-Type")[0], request.message_id, request.time, request.expire, algorithm, bodyhash)
key = RSA.importKey(open(self.private_keyfile).read())
signature = DKIMUtils.sign(sign_this, key, DKIMUtils.hash_func(algorithm))
self.assertEqual(result, signature)
# Make sure header is updated in the request
updated_header = "v=1; d=example.com; s=dkim; t=%s; x=%s; a=%s; q=private-exchange:http/well-known:dns/txt; c=ischedule-relaxed/simple; h=Originator:Recipient:Content-Type:iSchedule-Version:iSchedule-Message-ID; bh=%s; b=%s" % (request.time, request.expire, algorithm, bodyhash, signature,)
self.assertEqual(request.headers.getRawHeaders("DKIM-Signature")[0], updated_header)
# Try to verify result using public key
pubkey = RSA.importKey(open(self.public_keyfile).read())
self.assertEqual(DKIMUtils.verify(sign_this, result, pubkey, DKIMUtils.hash_func(algorithm)), None)
def _verify(hdrs, body, keys, result, sign_headers=("Originator", "Recipient", "Content-Type",), manipulate_request=None):
for algorithm in ("rsa-sha1", "rsa-sha256",):
# Create signature
stream = MemoryStream(body)
headers = Headers()
for name, value in [hdr.split(":", 1) for hdr in hdrs.splitlines()]:
headers.addRawHeader(name, value)
request = DKIMRequest("POST", "/", headers, stream, "example.com", "dkim", self.private_keyfile, algorithm, sign_headers, True, True, True, 3600)
yield request.sign()
# Possibly munge the request after the signature is done
if manipulate_request is not None:
manipulate_request(request)
# Verify signature
TestPublicKeyLookup.PublicKeyLookup_Testing.keys = keys
data = (yield allDataFromStream(request.stream))
verifier = DKIMVerifier(request.headers, data, key_lookup=(TestPublicKeyLookup.PublicKeyLookup_Testing,))
TestPublicKeyLookup.PublicKeyLookup_Testing({}).flushCache()
try:
yield verifier.verify()
except Exception, e:
if result:
self.fail("DKIMVerifier:verify failed: %s" % (e,))
else:
if not result:
self.fail("DKIMVerifier:verify did not fail")
def test_generateSignature(self):
data = "Hello World!"
for algorithm, hash_method in (
("rsa-sha1", hashlib.sha1,),
("rsa-sha256", hashlib.sha256,),
):
stream = MemoryStream(data)
headers = Headers()
headers.addRawHeader("Originator", "mailto:[email protected]")
headers.addRawHeader("Recipient", "mailto:[email protected]")
headers.setHeader("Content-Type", MimeType("text", "calendar", **{"component": "VEVENT", "charset": "utf-8"}))
request = DKIMRequest("POST", "/", headers, stream, "example.com", "dkim", self.private_keyfile, algorithm, ("Originator", "Recipient", "Content-Type",), True, True, True, 3600)
# Manually create what should be the correct thing to sign
bodyhash = base64.b64encode(hash_method(data).digest())
sign_this = """originator:mailto:[email protected]
recipient:mailto:[email protected]
content-type:%s
ischedule-version:1.0
dkim-signature:v=1; d=example.com; s=dkim; t=%s; x=%s; a=%s; q=dns/txt:http/well-known; c=ischedule-relaxed/simple; h=Originator:Recipient; bh=%s; b=""".replace("\n", "\r\n") % (headers.getRawHeaders("Content-Type")[0], str(int(time.time())), str(int(time.time() + 3600)), algorithm, bodyhash)
result = request.generateSignature(sign_this)
key = RSA.importKey(open(self.private_keyfile).read())
signature = DKIMUtils.sign(sign_this, key, DKIMUtils.hash_func(algorithm))
self.assertEqual(result, signature)
def test_body_hash(self):
data = "Hello World!"
for algorithm, hash_method in (
(
"rsa-sha1",
hashlib.sha1,
),
(
"rsa-sha256",
hashlib.sha256,
),
):
stream = str(data)
headers = Headers()
headers.addRawHeader("Originator", "mailto:[email protected]")
headers.addRawHeader("Recipient", "mailto:[email protected]")
headers.setHeader(
"Content-Type",
MimeType("text", "calendar", **{
"component": "VEVENT",
"charset": "utf-8"
}))
request = DKIMRequest("POST", "/", headers, stream, "example.com",
"dkim", "/tmp/key", algorithm, (
"Originator",
"Recipient",
"Content-Type",
), True, True, True, 3600)
hash = base64.b64encode(
hash_method(DKIMUtils.canonicalizeBody(data)).digest())
result = (yield request.bodyHash())
self.assertEqual(result, hash)
def test_body_hash(self):
data = "Hello World!"
for algorithm, hash_method in (
("rsa-sha1", hashlib.sha1,),
("rsa-sha256", hashlib.sha256,),
):
stream = str(data)
headers = Headers()
headers.addRawHeader("Originator", "mailto:[email protected]")
headers.addRawHeader("Recipient", "mailto:[email protected]")
headers.setHeader("Content-Type", MimeType("text", "calendar", **{"component": "VEVENT", "charset": "utf-8"}))
request = DKIMRequest("POST", "/", headers, stream, "example.com", "dkim", "/tmp/key", algorithm, ("Originator", "Recipient", "Content-Type",), True, True, True, 3600)
hash = base64.b64encode(hash_method(DKIMUtils.canonicalizeBody(data)).digest())
result = (yield request.bodyHash())
self.assertEqual(result, hash)
def _doRequest(options):
if options["verbose"]:
log.publisher.levels.setLogLevelForNamespace("txdav.caldav.datastore.scheduling.ischedule.dkim", LogLevel.debug)
# Parse the HTTP file
request = open(options["request"]).read()
method, uri, headers, stream = _parseRequest(request)
# Setup signing headers
sign_headers = options["signing"]
if sign_headers is None:
sign_headers = []
for hdr in ("Host", "Content-Type", "Originator", "Recipient+"):
if headers.hasHeader(hdr.rstrip("+")):
sign_headers.append(hdr)
else:
sign_headers = sign_headers.split(":")
dkim = DKIMRequest(
method,
uri,
headers,
stream,
options["domain"],
options["selector"],
options["key"],
options["algorithm"],
sign_headers,
True,
True,
False,
int(options["expire"]),
)
if options["fake-time"]:
dkim.time = "100"
dkim.expire = "200"
dkim.message_id = "1"
yield dkim.sign()
s = StringIO()
_writeRequest(dkim, s)
print(s.getvalue())
def _doRequest(options):
if options["verbose"]:
log.levels().setLogLevelForNamespace(
"txdav.caldav.datastore.scheduling.ischedule.dkim", LogLevel.debug)
# Parse the HTTP file
with open(options["request"]) as f:
request = f.read()
method, uri, headers, stream = _parseRequest(request)
# Setup signing headers
sign_headers = options["signing"]
if sign_headers is None:
sign_headers = []
for hdr in ("Host", "Content-Type", "Originator", "Recipient+"):
if headers.hasHeader(hdr.rstrip("+")):
sign_headers.append(hdr)
else:
sign_headers = sign_headers.split(":")
dkim = DKIMRequest(
method,
uri,
headers,
stream,
options["domain"],
options["selector"],
options["key"],
options["algorithm"],
sign_headers,
True,
True,
False,
int(options["expire"]),
)
if options["fake-time"]:
dkim.time = "100"
dkim.expire = "200"
dkim.message_id = "1"
yield dkim.sign()
s = StringIO()
_writeRequest(dkim, s)
print(s.getvalue())