1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
# Copyright 2020 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.
#
# Lint as: python3
"""Generates known_test_values.h from dumped test values.
This program generates the known_test_values.h file used for unit tests. This is
useful to correct the baseline test values based on dumps from the tests. Use
this after fixing a bug in the code, not to 'fix' test breakage not well
understood.
Usage:
$ cd out
$ python ../generate_test_values.py > ../include/dice/known_test_values.h
Prerequisites:
pip install absl-py
"""
from __future__ import print_function
import re
import subprocess
import textwrap
from absl import app
from absl import flags
FLAGS = flags.FLAGS
_FILE_HEADER = textwrap.dedent("""\
// Copyright 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
// !!! GENERATED - DO NOT MODIFY !!!
// To update this file, use generate_test_values.py.
#ifndef DICE_KNOWN_TEST_VALUES_H_
#define DICE_KNOWN_TEST_VALUES_H_
#include <stdint.h>
namespace dice {
namespace test {
""")
_FILE_FOOTER = textwrap.dedent("""\
} // namespace test
} // namespace dice
#endif // DICE_KNOWN_TEST_VALUES_H_
""")
def _to_camel_case(s):
return ''.join(tmp.capitalize() for tmp in s.split('_'))
def _read_file(name):
try:
with open(name, 'rb') as f:
return f.read()
except OSError:
return ''
def _generate_array(name, data):
return 'constexpr uint8_t %s[%d] = {%s};\n\n' % (
name, len(data), ', '.join('0x%02x' % tmp for tmp in data))
def _generate_cert_comment(data):
return re.sub('^',
'// ',
subprocess.run([
'openssl', 'x509', '-inform', 'DER', '-noout', '-text',
'-certopt', 'ext_parse'
],
input=data,
capture_output=True,
check=True).stdout.decode(),
flags=re.MULTILINE)[:-3]
def _generate_c(name):
"""Generates C declarations from dumps identified by |name|."""
content = ''
attest_cdi_data = _read_file('_attest_cdi_%s.bin' % name)
content += _generate_array('kExpectedCdiAttest_%s' % _to_camel_case(name),
attest_cdi_data)
seal_cdi_data = _read_file('_seal_cdi_%s.bin' % name)
content += _generate_array('kExpectedCdiSeal_%s' % _to_camel_case(name),
seal_cdi_data)
for cert_type in ('X509', 'CBOR'):
for key_type in ('Ed25519', 'P256'):
var_name = 'kExpected%s%sCert_%s' % (_to_camel_case(cert_type),
_to_camel_case(key_type),
_to_camel_case(name))
cert_data = _read_file('_%s_%s_cert_%s.cert' %
(cert_type, key_type, name))
if cert_type == 'X509':
content += (
'// $ openssl x509 -inform DER -noout -text -certopt '
'ext_parse\n')
content += _generate_cert_comment(cert_data)
content += _generate_array(var_name, cert_data)
return content
def main(argv):
if len(argv) > 1:
raise app.UsageError('Too many command-line arguments.')
content = _FILE_HEADER
content += _generate_c('zero_input')
content += _generate_c('hash_only_input')
content += _generate_c('descriptor_input')
content += _FILE_FOOTER
subprocess.run(['clang-format', '--style=file'],
input=content.encode(),
check=True)
if __name__ == '__main__':
app.run(main)
|
