[gnutls-devel] GnuTLS | Add compress_certificate extension (RFC8879) (!1512)

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Zoltán Fridrich commented on a discussion on lib/ext/compress_certificate.c: https://gitlab.com/gnutls/gnutls/-/merge_requests/1512#note_849654830

> +
> +    DECR_LEN(data_size, algs_size);
> +    memcpy(algs, data + 1, algs_size);
> +    algs_size /= sizeof(uint16_t);
> +
> +    for (unsigned i = 0; i < algs_size; ++i) {
> +        tmp = _gnutls_read_uint16((uint8_t *)(algs + i));
> +        if (_gnutls_compress_certificate_num2method(tmp) == GNUTLS_COMP_UNKNOWN)
> +            return gnutls_assert_val(GNUTLS_E_RECEIVED_ILLEGAL_PARAMETER);
> +    }
> +
> +    memcpy(priv_algs, priv.data, priv.size);
> +    priv_algs_size = priv.size / sizeof(uint16_t);
> +
> +    for (unsigned i = 0; i < algs_size && method == GNUTLS_COMP_UNKNOWN; ++i)
> +        for (unsigned j = 0; j < priv_algs_size && method == GNUTLS_COMP_UNKNOWN; ++j)

not checking the server_precedence for now

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