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resolved: when serializing NSEC3 windows, don't write more windows than necessary

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This commit is contained in:
Lennart Poettering 2015-12-14 21:26:15 +01:00
parent e1a9f1a81d
commit d0ae14ff09
1 changed files with 5 additions and 4 deletions
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9
src/resolve/resolved-dns-packet.c
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@ -659,15 +659,16 @@ static int dns_packet_append_types(DnsPacket *p, Bitmap *types, size_t *start) {
}
window = n >> 8;
entry = n & 255;
bitmaps[entry / 8] |= 1 << (7 - (entry % 8));
}
r = dns_packet_append_type_window(p, window, entry / 8 + 1, bitmaps, NULL);
if (r < 0)
goto fail;
if (bitmaps[entry / 8] != 0) {
r = dns_packet_append_type_window(p, window, entry / 8 + 1, bitmaps, NULL);
if (r < 0)
goto fail;
}
if (start)
*start = saved_size;