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#!/usr/bin/env python
"""
Generate a Python file based on a YAML description of PKCS #11
attributes. See comments in attributes.yaml for details.
For use in Python we don't care about most of the annotations
in the YAML file, just the attribute name and data type.
"""
# Author: Rob Austein
# Copyright (c) 2015, NORDUnet A/S
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
# - Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# - Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# - Neither the name of the NORDUnet nor the names of its contributors may
# be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
# IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
# TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# This requires a third-party YAML parser. On Debian-family Linux,
# you can install this with:
#
# sudo apt-get install python-yaml
import os
import sys
import yaml
import argparse
parser = argparse.ArgumentParser(description = __doc__, formatter_class = argparse.ArgumentDefaultsHelpFormatter)
parser.add_argument("yaml_file", help = "Input YAML file", nargs = "?", type = argparse.FileType("r"), default = sys.stdin)
parser.add_argument("output_file", help = "Output .py file", nargs = "?", type = argparse.FileType("w"), default = sys.stdout)
args = parser.parse_args()
attribute_map = dict(
(k, v["type"])
for y in yaml.safe_load(args.yaml_file)
for k, v in y.iteritems()
if k.startswith("CKA_") and "type" in v)
args.output_file.write('''\
# This file was generated automatically from %(input)s by %(script)s. Do not edit this file directly.
attribute_map = %(attribute_map)s
''' % dict(script = os.path.basename(sys.argv[0]),
input = args.yaml_file.name,
attribute_map = repr(attribute_map).replace(",", ",\n").replace("{", "{\n ")))
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