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