98 lines
2.2 KiB
Bash
Executable File
98 lines
2.2 KiB
Bash
Executable File
#!/bin/bash
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#
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# $Id$
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# Fuzz-testing script for Tethereal
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#
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# This script uses Editcap to add random errors ("fuzz") to a set of
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# capture files specified on the command line. It runs Tethereal on
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# each fuzzed file and checks for errors. The files are processed
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# repeatedly until an error is found.
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# Tweak the following to your liking. Editcap must support "-E".
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TETHEREAL=./tethereal
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EDITCAP=./editcap
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CAPINFOS=./capinfos
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# This needs to point to a 'date' that supports %s.
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DATE=/bin/date
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# Where our temp files are saved (editcap.out and stderr.out)
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TMP_DIR=/tmp
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TETHEREAL_ARGS="-nVxr"
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# These may be set to your liking
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MAX_CPU_TIME=900
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MAX_VMEM=500000
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ERR_PROB=0.02
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ulimit -S -t $MAX_CPU_TIME -v $MAX_VMEM
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# Make sure we have a valid test set
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FOUND=0
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for CF in "$@" ; do
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$CAPINFOS "$CF" > /dev/null 2>&1 && FOUND=1
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if [ $FOUND -eq 1 ] ; then break ; fi
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done
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if [ $FOUND -eq 0 ] ; then
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cat <<FIN
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Error: No valid capture files found.
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Usage: `basename $0` capture file 1 [capture file 2]...
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FIN
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exit 1
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fi
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echo "Running $TETHEREAL with args: $TETHEREAL_ARGS"
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echo ""
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# Iterate over our capture files.
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PASS=0
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while [ 1 ] ; do
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PASS=`expr $PASS + 1`
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echo "Pass $PASS:"
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for CF in "$@" ; do
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echo -n " $CF: "
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$CAPINFOS "$CF" > /dev/null 2>&1
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if [ $? -ne 0 ] ; then
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echo "Not a valid capture file"
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continue
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fi
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DISSECTOR_BUG=0
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$EDITCAP -E $ERR_PROB "$CF" $TMP_DIR/editcap.out > /dev/null 2>&1
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if [ $? -ne 0 ] ; then
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$EDITCAP -E $ERR_PROB -T ether "$CF" $TMP_DIR/editcap.out > /dev/null 2>&1
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if [ $? -ne 0 ] ; then
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echo "Invalid format for editcap"
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continue
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fi
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fi
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$TETHEREAL $TETHEREAL_ARGS $TMP_DIR/editcap.out \
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> /dev/null 2> $TMP_DIR/stderr.out
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RETVAL=$?
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grep -i "dissector bug" $TMP_DIR/stderr.out \
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> /dev/null 2>&1 && DISSECTOR_BUG=1
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if [ $RETVAL -ne 0 -o $DISSECTOR_BUG -ne 0 ] ; then
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SUF=`$DATE +%s`
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echo " ERROR"
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echo -e "Processing failed. Capture info follows:\n"
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mv $TMP_DIR/editcap.out $TMP_DIR/editcap.out.$SUF
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echo " Output file: $TMP_DIR/editcap.out.$SUF"
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if [ $DISSECTOR_BUG -ne 0 ] ; then
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echo -e "stderr follows:\n"
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cat $TMP_DIR/stderr.out
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fi
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exit 1
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fi
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echo " OK"
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done
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done
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