glibc/SOURCES/glibc-rh1868106-4.patch
2021-09-16 08:47:57 +00:00

37 lines
1.3 KiB
Diff

commit 08443b19965f48862b02c2fd7b33a39d66daf2ff
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Oct 14 10:54:39 2020 +0200
support: Provide a way to clear the RA bit in DNS server responses
diff --git a/support/resolv_test.c b/support/resolv_test.c
index 8cca4e6cf723de28..9323f1d55b0be8f1 100644
--- a/support/resolv_test.c
+++ b/support/resolv_test.c
@@ -181,7 +181,9 @@ resolv_response_init (struct resolv_response_builder *b,
b->buffer[2] |= b->query_buffer[2] & 0x01; /* Copy the RD bit. */
if (flags.tc)
b->buffer[2] |= 0x02;
- b->buffer[3] = 0x80 | flags.rcode; /* Always set RA. */
+ b->buffer[3] = flags.rcode;
+ if (!flags.clear_ra)
+ b->buffer[3] |= 0x80;
if (flags.ad)
b->buffer[3] |= 0x20;
diff --git a/support/resolv_test.h b/support/resolv_test.h
index ff5571dace92c936..825abb9ff2897a43 100644
--- a/support/resolv_test.h
+++ b/support/resolv_test.h
@@ -148,6 +148,10 @@ struct resolv_response_flags
/* If true, the AD (authenticated data) flag will be set. */
bool ad;
+ /* If true, do not set the RA (recursion available) flag in the
+ response. */
+ bool clear_ra;
+
/* Initial section count values. Can be used to artificially
increase the counts, for malformed packet testing.*/
unsigned short qdcount;