static int s2n_handshake_get_hash_state_ptr()

in tls/s2n_handshake.c [68:101]

• 32 lines of code
• 8 McCabe index (conditional complexity)

static int s2n_handshake_get_hash_state_ptr(struct s2n_connection *conn, s2n_hash_algorithm hash_alg, struct s2n_hash_state **hash_state)
{
    POSIX_ENSURE_REF(conn);
    POSIX_ENSURE_REF(conn->handshake.hashes);

    switch (hash_alg) {
        case S2N_HASH_MD5:
            *hash_state = &conn->handshake.hashes->md5;
            break;
        case S2N_HASH_SHA1:
            *hash_state = &conn->handshake.hashes->sha1;
            break;
        case S2N_HASH_SHA224:
            *hash_state = &conn->handshake.hashes->sha224;
            break;
        case S2N_HASH_SHA256:
            *hash_state = &conn->handshake.hashes->sha256;
            break;
        case S2N_HASH_SHA384:
            *hash_state = &conn->handshake.hashes->sha384;
            break;
        case S2N_HASH_SHA512:
            *hash_state = &conn->handshake.hashes->sha512;
            break;
        case S2N_HASH_MD5_SHA1:
            *hash_state = &conn->handshake.hashes->md5_sha1;
            break;
        default:
            POSIX_BAIL(S2N_ERR_HASH_INVALID_ALGORITHM);
            break;
    }

    return S2N_SUCCESS;
}