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Detect sub-options

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When option A is only meaningful if option B is enabled, when enumerating
single-option test cases, emit A:B and !A:B rather than A and !A. This way
the "!A" case is actually meaningful.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine
2024-05-23 16:32:39 +02:00
parent 693611e532
commit c79ecea42b
1 changed files with 61 additions and 0 deletions
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61
scripts/generate_config_tests.py
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@ -40,6 +40,63 @@ def single_option_case(setting: config.Setting, when_on: bool,
return tc
PSA_WANT_KEY_TYPE_KEY_PAIR_RE = \
re.compile(r'(?P<prefix>PSA_WANT_KEY_TYPE_(?P<type>\w+)_KEY_PAIR_)(?P<operation>\w+)\Z')
# If foo is an option that is only meaningful when bar is enabled, set
# SUPER_SETTINGS[foo]=bar. More generally, bar can be a colon-separated
# list of options, meaning that all the options must be enabled. Each option
# can be prefixed with '!' to negate it. This is the same syntax as a
# depends_on directive in test data.
# See also `find_super_option`.
SUPER_SETTINGS = {
'MBEDTLS_AESCE_C': 'MBEDTLS_AES_C',
'MBEDTLS_AESNI_C': 'MBEDTLS_AES_C',
'MBEDTLS_ERROR_STRERROR_DUMMY': '!MBEDTLS_ERROR_C',
'MBEDTLS_GENPRIME': 'MBEDTLS_RSA_C',
'MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES': 'MBEDTLS_ENTROPY_C',
'MBEDTLS_NO_PLATFORM_ENTROPY': 'MBEDTLS_ENTROPY_C',
'MBEDTLS_PKCS1_V15': 'MBEDTLS_RSA_C',
'MBEDTLS_PKCS1_V21': 'MBEDTLS_RSA_C',
'MBEDTLS_PSA_CRYPTO_CLIENT': 'MBEDTLS_PSA_CRYPTO_C',
'MBEDTLS_PSA_INJECT_ENTROPY': 'MBEDTLS_PSA_CRYPTO_C',
'MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS': 'MBEDTLS_PSA_CRYPTO_C',
}
def find_super_option(cfg: config.Config,
setting: config.Setting) -> Optional[str]:
"""If setting is only meaningful when some option is enabled, return that option.
The return value can be a colon-separated list of options, if the setting
is only meaningful when all of these options are enabled. Options can be
negated by prefixing them with '!'. This is the same syntax as a
depends_on directive in test data.
"""
#pylint: disable=too-many-return-statements
name = setting.name
if name in SUPER_SETTINGS:
return SUPER_SETTINGS[name]
if name.startswith('MBEDTLS_') and not name.endswith('_C'):
if name.startswith('MBEDTLS_CIPHER_PADDING_'):
return 'MBEDTLS_CIPHER_C:MBEDTLS_CIPHER_MODE_CBC'
if name.startswith('MBEDTLS_PK_PARSE_EC_'):
return 'MBEDTLS_PK_C:MBEDTLS_PK_HAVE_ECC_KEYS'
if name.startswith('MBEDTLS_SSL_TLS1_3_') or \
name == 'MBEDTLS_SSL_EARLY_DATA':
return 'MBEDTLS_SSL_CLI_C:MBEDTLS_SSL_SRV_C:MBEDTLS_SSL_PROTO_TLS1_3'
if name.startswith('MBEDTLS_SSL_DTLS_'):
return 'MBEDTLS_SSL_CLI_C:MBEDTLS_SSL_SRV_C:MBEDTLS_SSL_PROTO_DTLS'
if name.startswith('MBEDTLS_SSL_'):
return 'MBEDTLS_SSL_CLI_C:MBEDTLS_SSL_SRV_C'
for m in re.finditer(r'_', name):
super_name = name[:m.start()] + '_C'
if cfg.known(super_name):
return super_name
m = re.match(PSA_WANT_KEY_TYPE_KEY_PAIR_RE, name)
if m and m.group('operation') != 'BASIC':
return m.group('prefix') + 'BASIC'
return None
def conditions_for_option(cfg: config.Config,
setting: config.Setting
) -> Iterator[Tuple[List[str], str]]:
@ -63,6 +120,10 @@ def conditions_for_option(cfg: config.Config,
if name.endswith('_ALT') and not config.is_seamless_alt(name):
# We don't test alt implementations, except (most) platform alts
return
super_setting = find_super_option(cfg, setting)
if super_setting:
yield [super_setting], ''
return
yield [], ''