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8c3b520d4f
busybox/networking
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Jo-Philipp Wich 8c3b520d4f 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>
2019-10-27 17:02:08 +01:00
..
libiproute libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
ssl_helper
ssl_helper-wolfssl
udhcp udhcpc: fix segmentation fault on empty bin opt 2019-10-08 15:14:46 +02:00
arp.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
arping.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
brctl.c brctl: code shrink 2019-10-15 12:31:54 +02:00
Config.src
dnsd.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
ether-wake.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
ftpd.c
ftpgetput.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
hostname.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
httpd_helpers.sh
httpd_indexcgi.c
httpd_post_upload.cgi
httpd_ssi.c
httpd.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
ifconfig.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
ifenslave.c
ifplugd.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
ifupdown.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
inetd.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
interface.c
ip.c config: update size information 2018-12-28 03:20:17 +01:00
ipcalc.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
isrv_identd.c config: update size information 2018-12-28 03:20:17 +01:00
isrv.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
isrv.h
Kbuild.src
nameif.c
nbd-client.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
nc_bloaty.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
nc.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
netstat.c netstat: suppress a warning (conversion from 'int' to 'smallint' changes value) 2019-10-25 13:00:01 +02:00
nslookup.c nslookup: handle replies without RRs 2019-10-27 17:02:08 +01:00
ntpd.c ntpd: abs(tmx.offset) was truncating a "long" typed value 2019-10-25 17:35:58 +02:00
ntpd.diff
parse_pasv_epsv.c
ping.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
pscan.c config: update size information 2018-12-28 03:20:17 +01:00
route.c route: fix output of "route -n -A inet6" 2019-10-08 13:52:12 +02:00
slattach.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
ssl_client.c config: update size information 2018-12-28 03:20:17 +01:00
tc.c tc: array address is never NULL 2019-10-25 13:41:31 +02:00
tcpudp_perhost.c
tcpudp_perhost.h
tcpudp.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
telnet.c telnet: add disabled code to emit EC and IP 2019-10-18 16:47:37 +02:00
telnetd.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
telnetd.ctrlSQ.patch
telnetd.IAC_test.sh
tftp.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
tls_aes.c *: slap on a few ALIGN1/2s where appropriate 2019-05-21 17:29:24 +02:00
tls_aes.h
tls_aesgcm.c suppress a few "unused function" warnings 2019-10-25 13:05:15 +02:00
tls_aesgcm.h
tls_fe.c tls: code shrink 2019-01-10 20:18:02 +01:00
tls_fe.h
tls_pstm_montgomery_reduce.c networking: cc is not a register 2019-05-17 22:56:47 +02:00
tls_pstm_mul_comba.c networking: cc is not a register 2019-05-17 22:56:47 +02:00
tls_pstm_sqr_comba.c networking: cc is not a register 2019-05-17 22:56:47 +02:00
tls_pstm.c tls: pstm code shrink 2019-01-01 15:40:43 +01:00
tls_pstm.h tls: pstm code shrink 2019-01-01 15:40:43 +01:00
tls_rsa.c tls: pstm code shrink 2019-01-01 15:40:43 +01:00
tls_rsa.h
tls_symmetric.h
tls.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
tls.h libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
traceroute.c traceroute: fix gcc-ism 2019-10-25 13:39:41 +02:00
tunctl.c config: update size information 2018-12-28 03:20:17 +01:00
vconfig.c config: update size information 2018-12-28 03:20:17 +01:00
wget.c wget: increase redirections limit 2019-09-12 12:09:30 +02:00
whois.c config: update size information 2018-12-28 03:20:17 +01:00
zcip.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00