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- #
- # doc4.awk
- #
- # Distributed with: Doc - Version 2.0 (8/22/90)
- # USC Information Sciences Institute
- #
- #
- # Accepts as input, output from dig querying for NS records of a
- # domain. Expects input to include TTLs and to be all lower case.
- # Also expect to get address of these nameservers in the Additional
- # section.
- #
- # Ouput a list of internet dot-notion addresses of nameservers
- # for domain. Only does so if domain name of server is in domain.
- # i.e. vax.darpa.mil. is a nameserver for isi.edu., but we are
- # not interested in addresses not on isi networks
- #
- # Currently, if more than one address (of some server) are on the
- # same network (subnets not recognized), only one is printed.
- # Arguably for completeness, all address should be printed.
- #
- # Intended use: targets for queries to check for presence of
- # in-addr.arpa mappings for domain.
- #
-
- BEGIN {n=0}
-
- ## Find domain being tested (will be NS record for it)
-
- $4 == "ns" {
- ns = $1;
- }
-
- ##
- ## Look at A records, presumably Additional answers
- ## for addresses of nameservers.
- ##
-
- $4 == "a" && ns != "" {
- if (index($1,ns) > 0) { ## is server name in domain ?
- split($5, dd, ".");
- if (dd[1] < 127) {
- ii = dd[1];
- } else if (dd[1] < 192) {
- ii = dd[1] dd[2];
- } else {
- ii = dd[1] dd[2] dd[3];
- }
- # print "DDT", ii, hnet[ii], $5
- if (hnet[ii] == "") {
- hnet[ii] = $5;
- # print "DDT:" , $0
- print $5;
- }
- }
- }
-