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4f744a027f
4556. [bug] Sending an EDNS Padding option using "dig +ednsopt" could cause a crash in dig. [RT #44462]
121 lines
4.1 KiB
Bash
121 lines
4.1 KiB
Bash
#!/bin/sh
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#
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# Copyright (C) 2017 Internet Systems Consortium, Inc. ("ISC")
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#
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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SYSTEMTESTTOP=..
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. $SYSTEMTESTTOP/conf.sh
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n=0
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status=0
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getcookie() {
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awk '$2 == "COOKIE:" {
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print $3;
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}' < $1
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}
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echo "I:checking that dig handles padding ($n)"
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ret=0
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n=`expr $n + 1`
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$DIG +qr +padding=128 foo.example @10.53.0.2 -p 5300 > dig.out.test$n
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grep "; PAD" dig.out.test$n > /dev/null || ret=1
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grep "; QUERY SIZE: 128" dig.out.test$n > /dev/null || ret=1
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if [ $ret != 0 ]; then echo "I:failed"; fi
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status=`expr $status + $ret`
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echo "I:checking that dig added padding ($n)"
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ret=0
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n=`expr $n + 1`
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$RNDC -c ../common/rndc.conf -s 10.53.0.2 -p 9953 stats
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grep "EDNS padding option received" ns2/named.stats > /dev/null || ret=1
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if [ $ret != 0 ]; then echo "I:failed"; fi
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status=`expr $status + $ret`
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echo "I:checking that padding is added for TCP responses ($n)"
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ret=0
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n=`expr $n + 1`
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$DIG +vc +padding=128 foo.example @10.53.0.2 -p 5300 > dig.out.test$n
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grep "; PAD" dig.out.test$n > /dev/null || ret=1
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grep "rcvd: 128" dig.out.test$n > /dev/null || ret=1
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if [ $ret != 0 ]; then echo "I:failed"; fi
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status=`expr $status + $ret`
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echo "I:checking that padding is added to valid cookie responses ($n)"
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ret=0
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n=`expr $n + 1`
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$DIG +cookie foo.example @10.53.0.2 -p 5300 > dig.out.testc
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cookie=`getcookie dig.out.testc`
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$DIG +cookie=$cookie +padding=128 foo.example @10.53.0.2 -p 5300 > dig.out.test$n
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grep "; PAD" dig.out.test$n > /dev/null || ret=1
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grep "rcvd: 128" dig.out.test$n > /dev/null || ret=1
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if [ $ret != 0 ]; then echo "I:failed"; fi
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status=`expr $status + $ret`
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echo "I:checking that padding must be requested (TCP) ($n)"
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ret=0
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n=`expr $n + 1`
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$DIG +vc foo.example @10.53.0.2 -p 5300 > dig.out.test$n
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grep "; PAD" dig.out.test$n > /dev/null && ret=1
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if [ $ret != 0 ]; then echo "I:failed"; fi
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status=`expr $status + $ret`
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echo "I:checking that padding must be requested (valid cookie) ($n)"
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ret=0
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n=`expr $n + 1`
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$DIG +cookie=$cookie foo.example @10.53.0.2 -p 5300 > dig.out.test$n
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grep "; PAD" dig.out.test$n > /dev/null && ret=1
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if [ $ret != 0 ]; then echo "I:failed"; fi
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status=`expr $status + $ret`
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echo "I:checking that padding can be filtered out ($n)"
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ret=0
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n=`expr $n + 1`
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$DIG +vc +padding=128 -b 10.53.0.8 foo.example @10.53.0.2 -p 5300 > dig.out.test$n
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grep "; PAD" dig.out.test$n > /dev/null && ret=1
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if [ $ret != 0 ]; then echo "I:failed"; fi
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status=`expr $status + $ret`
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echo "I:checking that a TCP and padding server config enables padding ($n)"
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ret=0
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n=`expr $n + 1`
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$RNDC -c ../common/rndc.conf -s 10.53.0.2 -p 9953 stats
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opad=`grep "EDNS padding option received" ns2/named.stats | \
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tail -1 | awk '{ print $1}'`
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$DIG foo.example @10.53.0.3 -p 5300 > dig.out.test$n
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$RNDC -c ../common/rndc.conf -s 10.53.0.2 -p 9953 stats
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npad=`grep "EDNS padding option received" ns2/named.stats | \
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tail -1 | awk '{ print $1}'`
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if [ "$opad" -eq "$npad" ]; then ret=1; fi
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if [ $ret != 0 ]; then echo "I:failed"; fi
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status=`expr $status + $ret`
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echo "I:checking that a padding server config should enforce TCP ($n)"
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ret=0
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n=`expr $n + 1`
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$RNDC -c ../common/rndc.conf -s 10.53.0.2 -p 9953 stats
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opad=`grep "EDNS padding option received" ns2/named.stats | \
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tail -1 | awk '{ print $1}'`
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$DIG foo.example @10.53.0.4 -p 5300 > dig.out.test$n
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$RNDC -c ../common/rndc.conf -s 10.53.0.2 -p 9953 stats
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npad=`grep "EDNS padding option received" ns2/named.stats | \
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tail -1 | awk '{ print $1}'`
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if [ "$opad" -ne "$npad" ]; then ret=1; fi
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if [ $ret != 0 ]; then echo "I:failed"; fi
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status=`expr $status + $ret`
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echo "I:checking that zero-length padding option has no effect ($n)"
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ret=0
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n=`expr $n + 1`
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$DIG +qr +ednsopt=12 foo.example @10.53.0.2 -p 5300 > dig.out.test$n.1
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grep "; PAD" dig.out.test$n.1 > /dev/null || ret=1
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$DIG +qr +ednsopt=12:00 foo.example @10.53.0.2 -p 5300 > dig.out.test$n.2
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grep "; PAD" dig.out.test$n.2 > /dev/null || ret=1
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if [ $ret != 0 ]; then echo "I:failed"; fi
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status=`expr $status + $ret`
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echo "I:exit status: $status"
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[ $status -eq 0 ] || exit 1
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