def verify(self, zipfile=None):
"""Configure the VerifyingZipFile `zipfile` by verifying its signature
and setting expected hashes for every hash in RECORD.
Caller must complete the verification process by completely reading
every file in the archive (e.g. with extractall)."""
sig = None
if zipfile is None:
zipfile = self.zipfile
zipfile.strict = True
record_name = '/'.join((self.distinfo_name, 'RECORD'))
sig_name = '/'.join((self.distinfo_name, 'RECORD.jws'))
# tolerate s/mime signatures:
smime_sig_name = '/'.join((self.distinfo_name, 'RECORD.p7s'))
zipfile.set_expected_hash(record_name, None)
zipfile.set_expected_hash(sig_name, None)
zipfile.set_expected_hash(smime_sig_name, None)
record = zipfile.read(record_name)
record_digest = urlsafe_b64encode(hashlib.sha256(record).digest())
try:
sig = from_json(native(zipfile.read(sig_name)))
except KeyError: # no signature
pass
if sig:
headers, payload = signatures.verify(sig)
if payload['hash'] != "sha256=" + native(record_digest):
msg = "RECORD.sig claimed RECORD hash {0} != computed hash {1}."
raise BadWheelFile(
msg.format(payload['hash'], native(record_digest)))
reader = csv.reader((native(r) for r in record.splitlines()))
for row in reader:
filename = row[0]
hash = row[1]
if not hash:
if filename not in (record_name, sig_name):
sys.stderr.write("%s has no hash!\n" % filename)
continue
algo, data = row[1].split('=', 1)
assert algo == "sha256", "Unsupported hash algorithm"
zipfile.set_expected_hash(filename,
urlsafe_b64decode(binary(data)))
def verify(self, zipfile=None):
"""Configure the VerifyingZipFile `zipfile` by verifying its signature
and setting expected hashes for every hash in RECORD.
Caller must complete the verification process by completely reading
every file in the archive (e.g. with extractall)."""
sig = None
if zipfile is None:
zipfile = self.zipfile
zipfile.strict = True
record_name = '/'.join((self.distinfo_name, 'RECORD'))
sig_name = '/'.join((self.distinfo_name, 'RECORD.jws'))
# tolerate s/mime signatures:
smime_sig_name = '/'.join((self.distinfo_name, 'RECORD.p7s'))
zipfile.set_expected_hash(record_name, None)
zipfile.set_expected_hash(sig_name, None)
zipfile.set_expected_hash(smime_sig_name, None)
record = zipfile.read(record_name)
record_digest = urlsafe_b64encode(hashlib.sha256(record).digest())
try:
sig = from_json(native(zipfile.read(sig_name)))
except KeyError: # no signature
pass
if sig:
headers, payload = signatures.verify(sig)
if payload['hash'] != "sha256=" + native(record_digest):
msg = "RECORD.sig claimed RECORD hash {0} != computed hash {1}."
raise BadWheelFile(msg.format(payload['hash'],
native(record_digest)))
reader = csv.reader((native(r) for r in record.splitlines()))
for row in reader:
filename = row[0]
hash = row[1]
if not hash:
if filename not in (record_name, sig_name):
sys.stderr.write("%s has no hash!\n" % filename)
continue
algo, data = row[1].split('=', 1)
assert algo == "sha256", "Unsupported hash algorithm"
zipfile.set_expected_hash(filename, urlsafe_b64decode(binary(data)))
def verify_wheel(wheelfile):
wf = WheelFile(wheelfile)
sig_name = wf.distinfo_name + '/RECORD.jws'
try:
sig = json.loads(native(wf.zipfile.open(sig_name).read()))
except KeyError:
raise WheelValidationFailed("This wheel is not signed")
verified = signatures.verify(sig)
try:
vk = verified[0][0]['jwk']['vk']
except (KeyError, IndexError, ValueError):
raise WheelValidationFailed("Invalid signature")
if vk != settings.WHEEL_USER:
raise WheelValidationFailed("Wheel validation failed")
kr = keyring.get_keyring()
password = kr.get_password("wheel", settings.WHEEL_USER)
if password != settings.WHEEL_PASSWORD:
raise WheelValidationFailed("Wheel validation failed")
