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commit 62a321b12d0e397af88fa422db65079332f971dc
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Author: Florian Weimer <fweimer@redhat.com>
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Date: Fri Jun 24 18:16:41 2022 +0200
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support: Change non-address output format of support_format_dns_packet
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It makes sense to include the owner name (LHS) and record type in the
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output, so that they can be checked for correctness.
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Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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diff --git a/support/support_format_dns_packet.c b/support/support_format_dns_packet.c
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index 1f8e9ca172a06f4f..c3dff0e019801904 100644
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--- a/support/support_format_dns_packet.c
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+++ b/support/support_format_dns_packet.c
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@@ -101,6 +101,17 @@ extract_name (struct in_buffer full, struct in_buffer *in, struct dname *value)
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return true;
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}
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+static void
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+extract_name_data (struct in_buffer full, struct in_buffer *rdata,
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+ const struct dname *owner, const char *typename, FILE *out)
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+{
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+ struct dname name;
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+ if (extract_name (full, rdata, &name))
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+ fprintf (out, "data: %s %s %s\n", owner->name, typename, name.name);
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+ else
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+ fprintf (out, "error: malformed CNAME/PTR record\n");
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+}
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+
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char *
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support_format_dns_packet (const unsigned char *buffer, size_t length)
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{
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@@ -206,14 +217,11 @@ support_format_dns_packet (const unsigned char *buffer, size_t length)
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}
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break;
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case T_CNAME:
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+ extract_name_data (full, &rdata, &rname, "CNAME", mem.out);
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+ break;
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case T_PTR:
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- {
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- struct dname name;
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- if (extract_name (full, &rdata, &name))
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- fprintf (mem.out, "name: %s\n", name.name);
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- else
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- fprintf (mem.out, "error: malformed CNAME/PTR record\n");
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- }
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+ extract_name_data (full, &rdata, &rname, "PTR", mem.out);
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+ break;
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}
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}
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diff --git a/support/tst-support_format_dns_packet.c b/support/tst-support_format_dns_packet.c
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index 03ff59457e3bdde8..5596db1785009557 100644
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--- a/support/tst-support_format_dns_packet.c
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+++ b/support/tst-support_format_dns_packet.c
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@@ -85,8 +85,8 @@ test_multiple_cnames (void)
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"\xc0\x00\x02\x01";
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check_packet (packet, sizeof (packet) - 1, __func__,
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"name: www.example\n"
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- "name: www1.example\n"
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- "name: www2.example\n"
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+ "data: www.example CNAME www1.example\n"
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+ "data: www1.example CNAME www2.example\n"
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"address: 192.0.2.1\n");
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}
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