def GetByteStringFromFingerprint(fingerprint):
"""Helper function to create a byte string from a SHA fingerprint.
Args:
fingerprint: The fingerprint to transform in the form of
"12:34:56:78:90:...:EF".
Returns:
The fingerprint converted to a byte string (excluding the colons).
"""
if not ValidateFingerprint(fingerprint):
raise exceptions.FingerprintError('Invalid fingerprint')
byte_tokens = fingerprint.split(':')
return str(bytearray([int(b, 16) for b in byte_tokens]))
def _VerifyAndroidPackageArgs(self, allowed_entities):
# Verify that each Android package is in the correct format
for package in allowed_entities:
try:
_, fingerprint = package.split(',', 1)
except ValueError:
raise exceptions.InvalidConditionError(
'Package %s has incorrect format. It should be of the form '
'\'[PACKAGE_NAME],[FINGERPRINT]\'.' % package)
# Validate the fingerprint against the regex
if not services_util.ValidateFingerprint(fingerprint):
raise exceptions.FingerprintError(
'Invalid SHA fingerprint provided (%s).' % fingerprint)