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authorJo-Philipp Wich <jo@mein.io>2019-06-27 17:27:28 +0200
committerDenys Vlasenko <vda.linux@googlemail.com>2019-10-27 17:02:08 +0100
commit8c3b520d4f937b1d1856898dec5f634b12d9cc36 (patch)
tree3567d74bdf6f3bacef0468347d932f97babc9349 /testsuite/which
parentcaf5ee0dd9250a4ca913691bcdc247f8fe814e22 (diff)
downloadbusybox-8c3b520d4f937b1d1856898dec5f634b12d9cc36.tar.gz
nslookup: handle replies without RRs
Under some circumstances, a DNS reply might contain no resource records, e.g. when a valid domain is queried that does not have records of the requested type. Example with nslookup from BIND dnsutils: $ nslookup -q=SRV example.org Server: 10.11.12.13 Address: 10.11.12.13#53 Non-authoritative answer: *** Can't find example.org: No answer Currently the busybox nslookup applet simply prints nothing after the "Non-authoritative answer:" line in the same situation. This change modifies nslookup to either print "Parse error" or "No answer" diagnostics, depending on the parse_reply() return value. function old new delta send_queries 1676 1711 +35 Signed-off-by: Jo-Philipp Wich <jo@mein.io> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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