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In generate_psa_tests, use InputsForTest rather than PSAMacroCollector to gather values. This way, the enumeration of values to test includes values used in metadata tests in addition to constructors parsed from header files. This allows greater coverage of values built from constructors with arguments. This doesn't make a difference yet, but it will once algorithm constructors with arguments are supported in generate_psa_tests. Make the injection of numerical values optional. They are useful for test_psa_constant_names, so keep them there. Don't use them for not-supported tests: they might make sense, but the current code wouldn't work since it doesn't know how to make up fake key material or what dependencies to generate. Don't use them for storage tests: they only make sense for supported values. Don't inject 'PSA_SUCCESS': that's superfluous. Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
186 lines
7.3 KiB
Python
Executable file
186 lines
7.3 KiB
Python
Executable file
#!/usr/bin/env python3
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"""Test the program psa_constant_names.
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Gather constant names from header files and test cases. Compile a C program
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to print out their numerical values, feed these numerical values to
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psa_constant_names, and check that the output is the original name.
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Return 0 if all test cases pass, 1 if the output was not always as expected,
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or 1 (with a Python backtrace) if there was an operational error.
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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 argparse
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from collections import namedtuple
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import os
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import re
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import subprocess
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import sys
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from typing import Iterable, List, Optional, Tuple
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import scripts_path # pylint: disable=unused-import
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from mbedtls_dev import c_build_helper
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from mbedtls_dev.macro_collector import InputsForTest, PSAMacroEnumerator
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from mbedtls_dev import typing_util
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def gather_inputs(headers: Iterable[str],
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test_suites: Iterable[str],
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inputs_class=InputsForTest) -> PSAMacroEnumerator:
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"""Read the list of inputs to test psa_constant_names with."""
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inputs = inputs_class()
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for header in headers:
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inputs.parse_header(header)
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for test_cases in test_suites:
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inputs.parse_test_cases(test_cases)
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inputs.add_numerical_values()
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inputs.gather_arguments()
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return inputs
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def run_c(type_word: str,
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expressions: Iterable[str],
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include_path: Optional[str] = None,
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keep_c: bool = False) -> List[str]:
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"""Generate and run a program to print out numerical values of C expressions."""
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if type_word == 'status':
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cast_to = 'long'
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printf_format = '%ld'
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else:
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cast_to = 'unsigned long'
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printf_format = '0x%08lx'
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return c_build_helper.get_c_expression_values(
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cast_to, printf_format,
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expressions,
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caller='test_psa_constant_names.py for {} values'.format(type_word),
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file_label=type_word,
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header='#include <psa/crypto.h>',
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include_path=include_path,
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keep_c=keep_c
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)
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NORMALIZE_STRIP_RE = re.compile(r'\s+')
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def normalize(expr: str) -> str:
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"""Normalize the C expression so as not to care about trivial differences.
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Currently "trivial differences" means whitespace.
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"""
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return re.sub(NORMALIZE_STRIP_RE, '', expr)
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def collect_values(inputs: InputsForTest,
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type_word: str,
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include_path: Optional[str] = None,
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keep_c: bool = False) -> Tuple[List[str], List[str]]:
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"""Generate expressions using known macro names and calculate their values.
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Return a list of pairs of (expr, value) where expr is an expression and
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value is a string representation of its integer value.
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"""
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names = inputs.get_names(type_word)
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expressions = sorted(inputs.generate_expressions(names))
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values = run_c(type_word, expressions,
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include_path=include_path, keep_c=keep_c)
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return expressions, values
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class Tests:
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"""An object representing tests and their results."""
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Error = namedtuple('Error',
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['type', 'expression', 'value', 'output'])
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def __init__(self, options) -> None:
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self.options = options
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self.count = 0
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self.errors = [] #type: List[Tests.Error]
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def run_one(self, inputs: InputsForTest, type_word: str) -> None:
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"""Test psa_constant_names for the specified type.
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Run the program on the names for this type.
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Use the inputs to figure out what arguments to pass to macros that
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take arguments.
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"""
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expressions, values = collect_values(inputs, type_word,
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include_path=self.options.include,
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keep_c=self.options.keep_c)
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output_bytes = subprocess.check_output([self.options.program,
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type_word] + values)
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output = output_bytes.decode('ascii')
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outputs = output.strip().split('\n')
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self.count += len(expressions)
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for expr, value, output in zip(expressions, values, outputs):
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if self.options.show:
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sys.stdout.write('{} {}\t{}\n'.format(type_word, value, output))
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if normalize(expr) != normalize(output):
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self.errors.append(self.Error(type=type_word,
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expression=expr,
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value=value,
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output=output))
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def run_all(self, inputs: InputsForTest) -> None:
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"""Run psa_constant_names on all the gathered inputs."""
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for type_word in ['status', 'algorithm', 'ecc_curve', 'dh_group',
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'key_type', 'key_usage']:
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self.run_one(inputs, type_word)
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def report(self, out: typing_util.Writable) -> None:
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"""Describe each case where the output is not as expected.
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Write the errors to ``out``.
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Also write a total.
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"""
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for error in self.errors:
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out.write('For {} "{}", got "{}" (value: {})\n'
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.format(error.type, error.expression,
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error.output, error.value))
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out.write('{} test cases'.format(self.count))
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if self.errors:
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out.write(', {} FAIL\n'.format(len(self.errors)))
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else:
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out.write(' PASS\n')
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HEADERS = ['psa/crypto.h', 'psa/crypto_extra.h', 'psa/crypto_values.h']
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TEST_SUITES = ['tests/suites/test_suite_psa_crypto_metadata.data']
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def main():
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parser = argparse.ArgumentParser(description=globals()['__doc__'])
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parser.add_argument('--include', '-I',
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action='append', default=['include'],
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help='Directory for header files')
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parser.add_argument('--keep-c',
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action='store_true', dest='keep_c', default=False,
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help='Keep the intermediate C file')
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parser.add_argument('--no-keep-c',
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action='store_false', dest='keep_c',
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help='Don\'t keep the intermediate C file (default)')
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parser.add_argument('--program',
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default='programs/psa/psa_constant_names',
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help='Program to test')
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parser.add_argument('--show',
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action='store_true',
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help='Show tested values on stdout')
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parser.add_argument('--no-show',
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action='store_false', dest='show',
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help='Don\'t show tested values (default)')
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options = parser.parse_args()
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headers = [os.path.join(options.include[0], h) for h in HEADERS]
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inputs = gather_inputs(headers, TEST_SUITES)
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tests = Tests(options)
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tests.run_all(inputs)
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tests.report(sys.stdout)
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if tests.errors:
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sys.exit(1)
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if __name__ == '__main__':
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main()
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