diff options
Diffstat (limited to 'epan/dissectors')
| -rw-r--r-- | epan/dissectors/packet-dns.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/epan/dissectors/packet-dns.c b/epan/dissectors/packet-dns.c index 1abe0ca976..bda4e8378b 100644 --- a/epan/dissectors/packet-dns.c +++ b/epan/dissectors/packet-dns.c @@ -1476,6 +1476,33 @@ dissect_type_bitmap(proto_tree *rr_tree, tvbuff_t *tvb, int cur_offset, int rr_l return(initial_offset - cur_offset); } +static int +dissect_type_bitmap_nxt(proto_tree *rr_tree, tvbuff_t *tvb, int cur_offset, int rr_len) +{ + int mask; + int i, initial_offset, rr_type; + guint8 bits; + + initial_offset = cur_offset; + rr_type = 0; + while (rr_len != 0) { + bits = tvb_get_guint8(tvb, cur_offset); + mask = 1<<7; + for (i = 0; i < 8; i++) { + if (bits & mask) { + proto_tree_add_uint_format(rr_tree, hf_dns_rr_type, tvb, cur_offset, 1, rr_type, + "RR type in bit map: %s", + val_to_str_ext(rr_type, &dns_types_description_vals_ext, "Unknown (%d)")); + } + mask >>= 1; + rr_type++; + } + cur_offset += 1; + rr_len -= 1; + } + + return(initial_offset - cur_offset); +} /* * SIG, KEY, and CERT RR algorithms. * http://www.iana.org/assignments/dns-sec-alg-numbers/dns-sec-alg-numbers.txt (last updated 2012-04-13) @@ -2370,7 +2397,7 @@ dissect_dns_answer(tvbuff_t *tvb, int offsetx, int dns_data_offset, proto_tree_add_string(rr_tree, hf_dns_nxt_next_domain_name, tvb, cur_offset, next_domain_name_len, name_out); cur_offset += next_domain_name_len; rr_len -= next_domain_name_len; - dissect_type_bitmap(rr_tree, tvb, cur_offset, rr_len); + dissect_type_bitmap_nxt(rr_tree, tvb, cur_offset, rr_len); } break; |