diff options
Diffstat (limited to 'scripts/external_libs/pyzmq-14.5.0/python3/cel59/64bit/zmq/auth/certs.py')
-rw-r--r-- | scripts/external_libs/pyzmq-14.5.0/python3/cel59/64bit/zmq/auth/certs.py | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/scripts/external_libs/pyzmq-14.5.0/python3/cel59/64bit/zmq/auth/certs.py b/scripts/external_libs/pyzmq-14.5.0/python3/cel59/64bit/zmq/auth/certs.py new file mode 100644 index 00000000..4d26ad7b --- /dev/null +++ b/scripts/external_libs/pyzmq-14.5.0/python3/cel59/64bit/zmq/auth/certs.py @@ -0,0 +1,119 @@ +"""0MQ authentication related functions and classes.""" + +# Copyright (C) PyZMQ Developers +# Distributed under the terms of the Modified BSD License. + + +import datetime +import glob +import io +import os +import zmq +from zmq.utils.strtypes import bytes, unicode, b, u + + +_cert_secret_banner = u("""# **** Generated on {0} by pyzmq **** +# ZeroMQ CURVE **Secret** Certificate +# DO NOT PROVIDE THIS FILE TO OTHER USERS nor change its permissions. + +""") + +_cert_public_banner = u("""# **** Generated on {0} by pyzmq **** +# ZeroMQ CURVE Public Certificate +# Exchange securely, or use a secure mechanism to verify the contents +# of this file after exchange. Store public certificates in your home +# directory, in the .curve subdirectory. + +""") + +def _write_key_file(key_filename, banner, public_key, secret_key=None, metadata=None, encoding='utf-8'): + """Create a certificate file""" + if isinstance(public_key, bytes): + public_key = public_key.decode(encoding) + if isinstance(secret_key, bytes): + secret_key = secret_key.decode(encoding) + with io.open(key_filename, 'w', encoding='utf8') as f: + f.write(banner.format(datetime.datetime.now())) + + f.write(u('metadata\n')) + if metadata: + for k, v in metadata.items(): + if isinstance(v, bytes): + v = v.decode(encoding) + f.write(u(" {0} = {1}\n").format(k, v)) + + f.write(u('curve\n')) + f.write(u(" public-key = \"{0}\"\n").format(public_key)) + + if secret_key: + f.write(u(" secret-key = \"{0}\"\n").format(secret_key)) + + +def create_certificates(key_dir, name, metadata=None): + """Create zmq certificates. + + Returns the file paths to the public and secret certificate files. + """ + public_key, secret_key = zmq.curve_keypair() + base_filename = os.path.join(key_dir, name) + secret_key_file = "{0}.key_secret".format(base_filename) + public_key_file = "{0}.key".format(base_filename) + now = datetime.datetime.now() + + _write_key_file(public_key_file, + _cert_public_banner.format(now), + public_key) + + _write_key_file(secret_key_file, + _cert_secret_banner.format(now), + public_key, + secret_key=secret_key, + metadata=metadata) + + return public_key_file, secret_key_file + + +def load_certificate(filename): + """Load public and secret key from a zmq certificate. + + Returns (public_key, secret_key) + + If the certificate file only contains the public key, + secret_key will be None. + """ + public_key = None + secret_key = None + if not os.path.exists(filename): + raise IOError("Invalid certificate file: {0}".format(filename)) + + with open(filename, 'rb') as f: + for line in f: + line = line.strip() + if line.startswith(b'#'): + continue + if line.startswith(b'public-key'): + public_key = line.split(b"=", 1)[1].strip(b' \t\'"') + if line.startswith(b'secret-key'): + secret_key = line.split(b"=", 1)[1].strip(b' \t\'"') + if public_key and secret_key: + break + + return public_key, secret_key + + +def load_certificates(directory='.'): + """Load public keys from all certificates in a directory""" + certs = {} + if not os.path.isdir(directory): + raise IOError("Invalid certificate directory: {0}".format(directory)) + # Follow czmq pattern of public keys stored in *.key files. + glob_string = os.path.join(directory, "*.key") + + cert_files = glob.glob(glob_string) + for cert_file in cert_files: + public_key, _ = load_certificate(cert_file) + if public_key: + certs[public_key] = 'OK' + return certs + +__all__ = ['create_certificates', 'load_certificate', 'load_certificates'] |