226 lines
4.3 KiB
Bash
Executable File
226 lines
4.3 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2008, 2009 Edward Tomasz Napierała <trasz@FreeBSD.org>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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# This is an NFSv4 ACL fuzzer. It expects to be run by non-root in a scratch
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# directory on a filesystem with NFSv4 ACLs support. Output it generates
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# is expected to be fed to /usr/src/tools/regression/acltools/run script.
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NUMBER_OF_COMMANDS=300
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run_command()
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{
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echo "\$ $1"
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eval $1 2>&1 | sed 's/^/> /'
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}
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rnd_from_0_to()
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{
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max=`expr $1 + 1`
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rnd=`jot -r 1`
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rnd=`expr $rnd % $max`
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echo $rnd
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}
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rnd_path()
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{
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rnd=`rnd_from_0_to 3`
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case $rnd in
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0) echo "$TMP/aaa" ;;
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1) echo "$TMP/bbb" ;;
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2) echo "$TMP/aaa/ccc" ;;
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3) echo "$TMP/bbb/ddd" ;;
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esac
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}
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f_prepend_random_acl_on()
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{
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rnd=`rnd_from_0_to 4`
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case $rnd in
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0) u="owner@" ;;
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1) u="group@" ;;
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2) u="everyone@" ;;
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3) u="u:1138" ;;
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4) u="g:1138" ;;
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esac
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p=""
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while :; do
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rnd=`rnd_from_0_to 30`
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if [ -n "$p" -a $rnd -ge 14 ]; then
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break;
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fi
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case $rnd in
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0) p="${p}r" ;;
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1) p="${p}w" ;;
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2) p="${p}x" ;;
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3) p="${p}p" ;;
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4) p="${p}d" ;;
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5) p="${p}D" ;;
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6) p="${p}a" ;;
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7) p="${p}A" ;;
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8) p="${p}R" ;;
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9) p="${p}W" ;;
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10) p="${p}R" ;;
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11) p="${p}c" ;;
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12) p="${p}C" ;;
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13) p="${p}o" ;;
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14) p="${p}s" ;;
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esac
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done
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f=""
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while :; do
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rnd=`rnd_from_0_to 10`
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if [ $rnd -ge 6 ]; then
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break;
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fi
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case $rnd in
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0) f="${f}f" ;;
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1) f="${f}d" ;;
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2) f="${f}n" ;;
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3) f="${f}i" ;;
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esac
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done
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rnd=`rnd_from_0_to 1`
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case $rnd in
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0) x="allow" ;;
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1) x="deny" ;;
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esac
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acl="$u:$p:$f:$x"
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file=`rnd_path`
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run_command "setfacl -a0 $acl $file"
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}
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f_getfacl()
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{
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file=`rnd_path`
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run_command "getfacl -qn $file"
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}
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f_ls_mode()
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{
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file=`rnd_path`
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run_command "ls -al $file | sed -n '2p' | cut -d' ' -f1"
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}
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f_chmod()
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{
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b1=`rnd_from_0_to 7`
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b2=`rnd_from_0_to 7`
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b3=`rnd_from_0_to 7`
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b4=`rnd_from_0_to 7`
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file=`rnd_path`
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run_command "chmod $b1$b2$b3$b4 $file $2"
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}
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f_touch()
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{
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file=`rnd_path`
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run_command "touch $file"
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}
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f_rm()
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{
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file=`rnd_path`
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run_command "rm -f $file"
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}
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f_mkdir()
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{
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file=`rnd_path`
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run_command "mkdir $file"
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}
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f_rmdir()
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{
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file=`rnd_path`
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run_command "rmdir $file"
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}
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f_mv()
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{
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from=`rnd_path`
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to=`rnd_path`
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run_command "mv -f $from $to"
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}
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# XXX: To be implemented: chown(8), setting times with touch(1).
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switch_to_random_user()
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{
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# XXX: To be implemented.
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}
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execute_random_command()
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{
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rnd=`rnd_from_0_to 20`
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case $rnd in
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0|10|11|12|13|15) cmd=f_prepend_random_acl_on ;;
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1) cmd=f_getfacl ;;
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2) cmd=f_ls_mode ;;
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3) cmd=f_chmod ;;
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4|18|19) cmd=f_touch ;;
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5) cmd=f_rm ;;
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6|16|17) cmd=f_mkdir ;;
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7) cmd=f_rmdir ;;
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8) cmd=f_mv ;;
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esac
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$cmd "XXX"
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}
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echo "# Fuzzing; will stop after $NUMBER_OF_COMMANDS commands."
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TMP="aclfuzzer_`dd if=/dev/random bs=1k count=1 2>/dev/null | openssl md5`"
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run_command "whoami"
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umask 022
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run_command "umask 022"
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run_command "mkdir $TMP"
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i=0;
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while [ "$i" -lt "$NUMBER_OF_COMMANDS" ]; do
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switch_to_random_user
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execute_random_command
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i=`expr $i + 1`
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done
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run_command "find $TMP -exec setfacl -a0 everyone@:rxd:allow {} \;"
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run_command "rm -rfv $TMP"
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echo "# Fuzzed, thank you."
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