On Wed, Jun 09, 2021 at 02:13:34PM +0200, Trey Sis wrote:
> Dropping the patch file as attachment.
> From 57c7fcb0b3caccae7376f71ab1a9ae74f0e7f6d9 Mon Sep 17 00:00:00 2001
> From: treysis <trey...@gmx.net>
> Date: Sat, 5 Jun 2021 15:27:26 +0200
> Subject: [PATCH] Add option to filter A record requests
>
[1]
> ---
> src/dnsmasq.h | 3 ++-
> src/option.c | 3 +++
> src/rfc1035.c | 11 +++++++++++
> 3 files changed, 16 insertions(+), 1 deletion(-)
>
> diff --git a/src/dnsmasq.h b/src/dnsmasq.h
> index b27737b..2fec7d1 100644
> --- a/src/dnsmasq.h
> +++ b/src/dnsmasq.h
> @@ -272,7 +272,8 @@ struct event_desc {
> #define OPT_LOG_DEBUG 62
> #define OPT_UMBRELLA 63
> #define OPT_UMBRELLA_DEVID 64
> -#define OPT_LAST 65
> +#define OPT_FILTER_A 65
> +#define OPT_LAST 66
>
> #define OPTION_BITS (sizeof(unsigned int)*8)
> #define OPTION_SIZE ( (OPT_LAST/OPTION_BITS)+((OPT_LAST%OPTION_BITS)!=0) )
> diff --git a/src/option.c b/src/option.c
> index cacfaa6..43dc3cb 100644
> --- a/src/option.c
> +++ b/src/option.c
> @@ -171,6 +171,7 @@ struct myoption {
> #define LOPT_DYNHOST 362
> #define LOPT_LOG_DEBUG 363
> #define LOPT_UMBRELLA 364
> +#define LOPT_FILTER_A 365
>
> #ifdef HAVE_GETOPT_LONG
> static const struct option opts[] =
> @@ -347,6 +348,7 @@ static const struct myoption opts[] =
> { "dynamic-host", 1, 0, LOPT_DYNHOST },
> { "log-debug", 0, 0, LOPT_LOG_DEBUG },
> { "umbrella", 2, 0, LOPT_UMBRELLA },
> + { "filter-a", 0, 0, LOPT_FILTER_A },
> { NULL, 0, 0, 0 }
> };
>
> @@ -530,6 +532,7 @@ static struct {
> { LOPT_DUMPMASK, ARG_ONE, "<hex>", gettext_noop("Mask which packets to
> dump"), NULL },
> { LOPT_SCRIPT_TIME, OPT_LEASE_RENEW, NULL, gettext_noop("Call dhcp-script
> when lease expiry changes."), NULL },
> { LOPT_UMBRELLA, ARG_ONE, "[=<optspec>]", gettext_noop("Send Cisco
> Umbrella identifiers including remote IP."), NULL },
> + { LOPT_FILTER_A, OPT_FILTER_A, NULL, gettext_noop("Filter all A
> requests."), NULL },
> { 0, 0, NULL, NULL, NULL }
> };
>
> diff --git a/src/rfc1035.c b/src/rfc1035.c
> index 9bc5ef2..1043773 100644
> --- a/src/rfc1035.c
> +++ b/src/rfc1035.c
> @@ -1843,6 +1843,17 @@ size_t answer_request(struct dns_header *header, char
> *limit, size_t qlen,
> }
> }
>
> + /* filter A forwards */
> + if (qtype == T_A && option_bool(OPT_FILTER_A))
> + {
> + /* return a null reply */
> + ans = 1;
> + if (!dryrun)
> + log_query(F_CONFIG | F_IPV6 | F_NEG, name, &addr, NULL);
> + break;
> + }
> + /* end of filtering A */
> +
> if (!ans)
> return 0; /* failed to answer a question */
> }
/home/stappers/src/dnsmasq/.git/rebase-apply/patch:62: trailing whitespace.
if (!dryrun)
warning: 1 line adds whitespace errors.
Regards
Geert Stappers
[1] actual commit message
--
Silence is hard to parse
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