On Wed, Dec 23, 2015 at 03:23:47PM +0530, Shivani Bhardwaj wrote:
> Add translation for helper module to nftables.
>
> Examples:
>
> $ sudo iptables-translate -A FORWARD -m helper --helper sip
> nft add rule ip filter FORWARD ct helper \"sip\" counter
>
> $ sudo iptables-translate -A FORWARD -m helper ! --helper ftp
> nft add rule ip filter FORWARD ct helper != \"ftp\" counter
>
> Signed-off-by: Shivani Bhardwaj <shivanib134@xxxxxxxxx>
> ---
> extensions/libxt_helper.c | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/extensions/libxt_helper.c b/extensions/libxt_helper.c
> index c9f9435..5f1d8b1 100644
> --- a/extensions/libxt_helper.c
> +++ b/extensions/libxt_helper.c
> @@ -45,6 +45,19 @@ static void helper_save(const void *ip, const struct xt_entry_match *match)
> xtables_save_string(info->name);
> }
>
> +static int helper_xlate(const struct xt_entry_match *match,
> + struct xt_buf *buf, int numeric)
> +{
> + const struct xt_helper_info *info = (const void *)match->data;
> +
> + xt_buf_add(buf, "ct helper");
> +
> + xt_buf_add(buf, "%s \\\"%s\\\" ",
> + info->invert ? " !=" : "", info->name);
You can place this in one single call of xt_buf_add(), right?
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