[2/3] support: Provide a way to clear the RA bit in DNS server responses
Commit Message
---
support/resolv_test.c | 4 +++-
support/resolv_test.h | 4 ++++
2 files changed, 7 insertions(+), 1 deletion(-)
Comments
On 9/11/20 6:33 PM, Florian Weimer via Libc-alpha wrote:
> ---
> support/resolv_test.c | 4 +++-
> support/resolv_test.h | 4 ++++
> 2 files changed, 7 insertions(+), 1 deletion(-)
>
This is fine.
Thanks,
Siddhesh
@@ -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;
@@ -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;