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Flip logic of generate_psa_wrappers.py

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Change from a long list of PSA functions to a list of excluded
false-positives.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
This commit is contained in:
David Horstmann 2024-03-11 15:57:43 +00:00
parent 5d64c6acca
commit 5ba3f5f7a5
1 changed files with 8 additions and 46 deletions
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54
tests/scripts/generate_psa_wrappers.py
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@ -142,52 +142,14 @@ class PSAWrapperGenerator(c_wrapper_generator.Base):
_buffer_name: Optional[str]) -> bool:
"""Whether the specified buffer argument to a PSA function should be copied.
"""
#pylint: disable=too-many-return-statements
if function_name in ('psa_sign_hash_start',
'psa_sign_hash_complete',
'psa_verify_hash_start'):
return True
if function_name.startswith('psa_pake'):
return True
if function_name.startswith('psa_aead'):
return True
if function_name in {'psa_cipher_encrypt', 'psa_cipher_decrypt',
'psa_cipher_update', 'psa_cipher_finish',
'psa_cipher_generate_iv', 'psa_cipher_set_iv'}:
return True
if function_name in ('psa_key_derivation_output_bytes',
'psa_key_derivation_input_bytes'):
return True
if function_name in ('psa_import_key',
'psa_export_key',
'psa_export_public_key'):
return True
if function_name in ('psa_sign_message',
'psa_verify_message',
'psa_sign_hash',
'psa_verify_hash'):
return True
if function_name in ('psa_hash_update',
'psa_hash_finish',
'psa_hash_verify',
'psa_hash_compute',
'psa_hash_compare'):
return True
if function_name in ('psa_key_derivation_key_agreement',
'psa_raw_key_agreement'):
return True
if function_name == 'psa_generate_random':
return True
if function_name in ('psa_mac_update',
'psa_mac_sign_finish',
'psa_mac_verify_finish',
'psa_mac_compute',
'psa_mac_verify'):
return True
if function_name in ('psa_asymmetric_encrypt',
'psa_asymmetric_decrypt'):
return True
return False
# False-positives that do not need buffer copying
if function_name in ('mbedtls_psa_inject_entropy',
'psa_crypto_driver_pake_get_password',
'psa_crypto_driver_pake_get_user',
'psa_crypto_driver_pake_get_peer'):
return False
return True
def _write_function_call(self, out: typing_util.Writable,
function: c_wrapper_generator.FunctionInfo,