codekingpro/portable-devtools

1"""Utilities for certificate management."""2 3import os4 5certifi_available = False6certifi_where = None7try:8    from certifi import where as certifi_where9    certifi_available = True10except ImportError:11    pass12 13custom_ca_locater_available = False14custom_ca_locater_where = None15try:16    from ca_certs_locater import get as custom_ca_locater_where17    custom_ca_locater_available = True18except ImportError:19    pass20 21 22BUILTIN_CA_CERTS = os.path.join(23    os.path.dirname(os.path.abspath(__file__)), "cacerts.txt"24)25 26 27def where():28    env = os.environ.get("HTTPLIB2_CA_CERTS")29    if env is not None:30        if os.path.isfile(env):31            return env32        else:33            raise RuntimeError("Environment variable HTTPLIB2_CA_CERTS not a valid file")34    if custom_ca_locater_available:35        return custom_ca_locater_where()36    if certifi_available:37        return certifi_where()38    return BUILTIN_CA_CERTS39 40 41if __name__ == "__main__":42    print(where())43