bool S3fsCred::CheckAllParams()

in src/s3fs_cred.cpp [1280:1338]
39 lines of code
18 McCabe index (conditional complexity)

bool S3fsCred::CheckAllParams()
{
    //
    // Checking forbidden parameters for bucket
    //
    if(!CheckForbiddenBucketParams()){
        return false;
    }

    // error checking of command line arguments for compatibility
    if(S3fsCurl::IsPublicBucket() && IsSetAccessKeys(AutoLock::NONE)){
        S3FS_PRN_EXIT("specifying both public_bucket and the access keys options is invalid.");
        return false;
    }

    if(IsSetPasswdFile() && IsSetAccessKeys(AutoLock::NONE)){
        S3FS_PRN_EXIT("specifying both passwd_file and the access keys options is invalid.");
        return false;
    }

    if(!S3fsCurl::IsPublicBucket() && !load_ramrole && !IsSetExtCredLib()){
        if(!InitialCredentials()){
            return false;
        }
        if(!IsSetAccessKeys(AutoLock::NONE)){
            S3FS_PRN_EXIT("could not establish security credentials, check documentation.");
            return false;
        }
        // More error checking on the access key pair can be done
        // like checking for appropriate lengths and characters  
    }

    // check External Credential Library
    //
    // [NOTE]
    // If credlib(_opts) option (for External Credential Library) is specified,
    // no other Credential related options can be specified. It is exclusive.
    //
    if(set_builtin_cred_opts && (IsSetExtCredLib() || IsSetExtCredLibOpts())){
        S3FS_PRN_EXIT("The \"credlib\" or \"credlib_opts\" option and other credential-related options(passwd_file, iam_role, profile, use_session_token, ecs, imdsv1only, ibm_iam_auth, ibm_iam_endpoint, etc) cannot be specified together.");
        return false;
    }

    // Load and Initialize external credential library
    if(IsSetExtCredLib() || IsSetExtCredLibOpts()){
        if(!IsSetExtCredLib()){
            S3FS_PRN_EXIT("The \"credlib_opts\"(%s) is specifyed but \"credlib\" option is not specified.", credlib_opts.c_str());
            return false;
        }

        if(!InitExtCredLib()){
             S3FS_PRN_EXIT("failed to load the library specified by the option credlib(%s, %s).", credlib.c_str(), credlib_opts.c_str());
             return false;
        }
        S3FS_PRN_INFO("Loaded External Credential Library:\n%s", GetCredFuncVersion(true));
    }

    return true;
}