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author | Lennart Poettering <lennart@poettering.net> | 2015-12-14 21:26:15 +0100 |
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committer | Lennart Poettering <lennart@poettering.net> | 2015-12-14 21:28:39 +0100 |
commit | d0ae14ff09fca330d0ae3b41ab15e0d42210967b (patch) | |
tree | 24c733f00f6e8734a3dd28eadfdb45c17c8336f9 | |
parent | e1a9f1a81dd438f972353f1907a99325c51bdfda (diff) |
resolved: when serializing NSEC3 windows, don't write more windows than necessary
-rw-r--r-- | src/resolve/resolved-dns-packet.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/resolve/resolved-dns-packet.c b/src/resolve/resolved-dns-packet.c index 8fc3094b67..c34ecc44f8 100644 --- a/src/resolve/resolved-dns-packet.c +++ b/src/resolve/resolved-dns-packet.c @@ -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; |