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101 lines
3.4 KiB
Python
101 lines
3.4 KiB
Python
"""Library for generating Mbed TLS test data.
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"""
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# Copyright The Mbed TLS Contributors
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# SPDX-License-Identifier: Apache-2.0
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import binascii
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import os
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import sys
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from typing import Iterable, List, Optional
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from mbedtls_dev import typing_util
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def hex_string(data: bytes) -> str:
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return '"' + binascii.hexlify(data).decode('ascii') + '"'
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class MissingDescription(Exception):
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pass
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class MissingFunction(Exception):
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pass
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class TestCase:
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"""An Mbed TLS test case."""
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def __init__(self, description: Optional[str] = None):
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self.comments = [] #type: List[str]
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self.description = description #type: Optional[str]
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self.dependencies = [] #type: List[str]
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self.function = None #type: Optional[str]
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self.arguments = [] #type: List[str]
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def add_comment(self, *lines: str) -> None:
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self.comments += lines
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def set_description(self, description: str) -> None:
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self.description = description
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def set_dependencies(self, dependencies: List[str]) -> None:
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self.dependencies = dependencies
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def set_function(self, function: str) -> None:
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self.function = function
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def set_arguments(self, arguments: List[str]) -> None:
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self.arguments = arguments
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def check_completeness(self) -> None:
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if self.description is None:
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raise MissingDescription
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if self.function is None:
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raise MissingFunction
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def write(self, out: typing_util.Writable) -> None:
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"""Write the .data file paragraph for this test case.
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The output starts and ends with a single newline character. If the
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surrounding code writes lines (consisting of non-newline characters
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and a final newline), you will end up with a blank line before, but
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not after the test case.
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"""
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self.check_completeness()
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assert self.description is not None # guide mypy
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assert self.function is not None # guide mypy
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out.write('\n')
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for line in self.comments:
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out.write('# ' + line + '\n')
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out.write(self.description + '\n')
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if self.dependencies:
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out.write('depends_on:' + ':'.join(self.dependencies) + '\n')
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out.write(self.function + ':' + ':'.join(self.arguments) + '\n')
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def write_data_file(filename: str,
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test_cases: Iterable[TestCase],
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caller: Optional[str] = None) -> None:
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"""Write the test cases to the specified file.
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If the file already exists, it is overwritten.
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"""
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if caller is None:
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caller = os.path.basename(sys.argv[0])
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with open(filename, 'w') as out:
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out.write('# Automatically generated by {}. Do not edit!\n'
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.format(caller))
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for tc in test_cases:
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tc.write(out)
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out.write('\n# End of automatically generated file.\n')
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