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dnsmasq: add filter-aaaa patch

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CN_SZTL 2019-11-09 09:39:00 +08:00
parent 6f7e8f7a7d
commit de43e5bee6
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1 changed files with 74 additions and 0 deletions
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74
package/network/services/dnsmasq/patches/996-dnsmasq-filter-aaaa.patch Normal file
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@ -0,0 +1,74 @@
From 966471712184cfb3b067f2ae8dad9d8e2a896cae Mon Sep 17 00:00:00 2001
From: Bearice Ren <bearice@icybear.net>
Date: Tue, 20 Sep 2016 11:52:08 +0800
Subject: [PATCH] add filter-aaaa option
---
src/dnsmasq.h | 3 ++-
src/option.c | 3 +++
src/rfc1035.c | 9 +++++++++
3 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/src/dnsmasq.h b/src/dnsmasq.h
index 1896a64..e10d6c4 100644
--- a/src/dnsmasq.h
+++ b/src/dnsmasq.h
@@ -259,7 +259,8 @@ struct event_desc {
#define OPT_TFTP_APREF_MAC 56
#define OPT_RAPID_COMMIT 57
#define OPT_UBUS 58
-#define OPT_LAST 59
+#define OPT_FILTER_AAAA 59
+#define OPT_LAST 60
#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 d8c57d6..1cc65bf 100644
--- a/src/option.c
+++ b/src/option.c
@@ -166,6 +166,7 @@ struct myoption {
#define LOPT_UBUS 354
#define LOPT_NAME_MATCH 355
#define LOPT_CAA 356
+#define LOPT_FILTER_AAAA 357
#ifdef HAVE_GETOPT_LONG
static const struct option opts[] =
@@ -337,6 +338,7 @@ static const struct myoption opts[] =
{ "dhcp-rapid-commit", 0, 0, LOPT_RAPID_COMMIT },
{ "dumpfile", 1, 0, LOPT_DUMPFILE },
{ "dumpmask", 1, 0, LOPT_DUMPMASK },
+ { "filter-aaaa", 0, 0, LOPT_FILTER_AAAA },
{ NULL, 0, 0, 0 }
};
@@ -515,6 +517,7 @@ static struct {
{ LOPT_RAPID_COMMIT, OPT_RAPID_COMMIT, NULL, gettext_noop("Enables DHCPv4 Rapid Commit option."), NULL },
{ LOPT_DUMPFILE, ARG_ONE, "<path>", gettext_noop("Path to debug packet dump file"), NULL },
{ LOPT_DUMPMASK, ARG_ONE, "<hex>", gettext_noop("Mask which packets to dump"), NULL },
+ { LOPT_FILTER_AAAA, OPT_FILTER_AAAA, NULL, gettext_noop("Filter all AAAA requests."), NULL },
{ 0, 0, NULL, NULL, NULL }
};
diff --git a/src/rfc1035.c b/src/rfc1035.c
index 24d08c1..1594962 100644
--- a/src/rfc1035.c
+++ b/src/rfc1035.c
@@ -1970,6 +1970,15 @@ size_t answer_request(struct dns_header
}
}
+ //patch to filter aaaa forwards
+ if (qtype == T_AAAA && option_bool(OPT_FILTER_AAAA) ){
+ //return a null reply
+ ans = 1;
+ if (!dryrun) log_query(F_CONFIG | F_IPV6 | F_NEG, name, &addr, NULL);
+ break;
+ }
+ //end of patch
+
if (!ans)
return 0; /* failed to answer a question */
}
--