tests/loopaes-test

   1 #!/bin/bash
   2
   3 [ -z "$CRYPTSETUP_PATH" ] && CRYPTSETUP_PATH=".."
   4 CRYPTSETUP=$CRYPTSETUP_PATH/cryptsetup
   5
   6 # try to validate using loop-AES losetup/kernel if available
   7 LOSETUP_AES=/losetup-aes.old
   8
   9 LOOP_DD_PARAM="bs=1k count=10000"
  10 DEV_NAME=dummy
  11 IMG=loopaes.img
  12 KEYv1=key_v1
  13 KEYv2=key_v2
  14 KEYv3=key_v3
  15 LOOPDEV=$(losetup -f 2>/dev/null)
  16
  17 function dmremove() { # device
  18         udevadm settle >/dev/null 2>&1
  19         dmsetup remove --retry $1 >/dev/null 2>&1
  20 }
  21
  22 function remove_mapping()
  23 {
  24         [ -b /dev/mapper/$DEV_NAME2 ] && dmremove $DEV_NAME2
  25         [ -b /dev/mapper/$DEV_NAME ] && dmremove $DEV_NAME
  26         losetup -d $LOOPDEV >/dev/null 2>&1
  27         rm -f $IMG $KEYv1 $KEYv2 $KEYv3 >/dev/null 2>&1
  28 }
  29
  30 function fail()
  31 {
  32         echo "FAILED backtrace:"
  33         while caller $frame; do ((frame++)); done
  34         remove_mapping
  35         exit 2
  36 }
  37
  38 function skip()
  39 {
  40         [ -n "$1" ] && echo "$1"
  41         exit 77
  42 }
  43
  44 function prepare()
  45 {
  46         remove_mapping
  47         dd if=/dev/zero of=$IMG $LOOP_DD_PARAM >/dev/null 2>&1
  48         sync
  49         losetup $LOOPDEV $IMG
  50
  51         # Prepare raw key: v1 - one key, v2 - 64 keys, v3 - 64 + one IV
  52         if [ ! -e $KEYv3 ]; then
  53                 head -c 3705 /dev/urandom | uuencode -m - | head -n 66 | tail -n 65 >$KEYv3
  54                 head -n 1 $KEYv3 > $KEYv1
  55                 head -n 64 $KEYv3 > $KEYv2
  56         fi
  57         [ -n "$1" ] && echo -n "$1 "
  58 }
  59
  60 function check_exists()
  61 {
  62         [ -b /dev/mapper/$DEV_NAME ] || fail
  63 }
  64
  65 function get_offset_params() # $offset
  66 {
  67         offset=$1
  68         if [ "${offset:0:1}" = "@" ] ; then
  69                 echo "-o $((${offset:1} / 512)) -p 0"
  70         else
  71                 echo "-o $((offset / 512))"
  72         fi
  73 }
  74
  75 function get_expsum() # $offset
  76 {
  77         case $1 in
  78         0)
  79            echo "31e00e0e4c233c89051cd748122fde2c98db0121ca09ba93a3820817ea037bc5"
  80            ;;
  81         @8192 | 8192)
  82            echo "bfd94392d1dd8f5d477251d21b3c736e177a4945cd4937847fc7bace82996aed"
  83            ;;
  84         @8388608 | 8388608)
  85            echo "33838fe36928a929bd7971bed7e82bd426c88193fcd692c2e6f1b9c9bfecd4d6"
  86            ;;
  87         *) fail
  88            ;;
  89         esac
  90 }
  91
  92 function check_sum() # $key $keysize $offset [stdin|keyfile]
  93 {
  94         $CRYPTSETUP close $DEV_NAME || fail
  95
  96         EXPSUM=$(get_expsum $3)
  97         if [ "$4" == "stdin" ] ; then
  98                 cat $1 | $CRYPTSETUP loopaesOpen $LOOPDEV $DEV_NAME -s $2 --key-file - $(get_offset_params $3) >/dev/null 2>&1
  99         else
 100                 $CRYPTSETUP loopaesOpen $LOOPDEV $DEV_NAME -s $2 --key-file $1 $(get_offset_params $3) >/dev/null 2>&1
 101         fi
 102         ret=$?
 103         VSUM=$(sha256sum /dev/mapper/$DEV_NAME | cut -d' ' -f 1)
 104         if [ $ret -eq 0 -a "$VSUM" = "$EXPSUM" ] ; then
 105                 echo -n "[$4:OK]"
 106         else
 107                 echo "[$4:FAIL]"
 108                 [ "$VSUM" != "$EXPSUM" ] && echo " Expecting $EXPSUM got $VSUM."
 109                 fail
 110         fi
 111 }
 112
 113 function check_sum_losetup() # $key $alg
 114 {
 115         [ ! -x $LOSETUP_AES ] && echo && return
 116
 117         echo -n " Verification using loop-AES: "
 118
 119         losetup -d $LOOPDEV >/dev/null 2>&1
 120         cat $1 | $LOSETUP_AES -p 0 -e $2 -o $3 $LOOPDEV $IMG
 121         ret=$?
 122         VSUM=$(sha256sum $LOOPDEV | cut -d' ' -f 1)
 123         if [ $ret -eq 0 -a "$VSUM" = "$EXPSUM" ] ; then
 124                 echo "[OK]"
 125         else
 126                 echo "[FAIL]"
 127                 [ "$VSUM" != "$EXPSUM" ] && echo " Expecting $EXPSUM got $VSUM (loop-AES)."
 128                 fail
 129         fi
 130         losetup -d $LOOPDEV >/dev/null 2>&1
 131 }
 132
 133 function check_version()
 134 {
 135         VER_STR=$(dmsetup version | grep Driver)
 136         VER_MIN=$(echo $VER_STR | cut -f 2 -d.)
 137         VER_PATCH=$(echo $VER_STR | cut -f 3 -d.)
 138
 139         test $VER_MIN -lt 19 && return 1
 140         test $VER_MIN -eq 19 -a $VER_PATCH -ge 6 && return 1 # RHEL
 141         return 0
 142 }
 143
 144 [ $(id -u) != 0 ] && skip "WARNING: You must be root to run this test, test skipped."
 145 [ -z "$LOOPDEV" ] && skip "Cannot find free loop device, test skipped."
 146 which uuencode >/dev/null 2>&1 || skip "WARNING: test require uuencode binary, test skipped."
 147 check_version || skip "Probably old kernel, test skipped."
 148
 149 # loop-AES tests
 150 KEY_SIZES="128 256"
 151 KEY_FILES="$KEYv1 $KEYv2 $KEYv3"
 152 DEV_OFFSET="0 8192 @8192 8388608 @8388608"
 153
 154 for key_size in $KEY_SIZES ; do
 155     for key in $KEY_FILES ; do
 156         for offset in $DEV_OFFSET ; do
 157                 prepare "Open loop-AES $key / AES-$key_size / offset $offset"
 158                 $CRYPTSETUP loopaesOpen $LOOPDEV $DEV_NAME \
 159                         -s $key_size --key-file $key $(get_offset_params $offset) \
 160                         2>/dev/null
 161                 [ $? -ne 0 ] && echo "[SKIPPED]" && continue
 162                 check_exists
 163                 # Fill device with zeroes and reopen it
 164                 dd if=/dev/zero of=/dev/mapper/$DEV_NAME $LOOP_DD_PARAM >/dev/null 2>&1
 165                 check_sum $key $key_size $offset keyfile
 166                 check_sum $key $key_size $offset stdin
 167                 $CRYPTSETUP loopaesClose $DEV_NAME || fail
 168                 check_sum_losetup $key AES$key_size $offset
 169         done
 170     done
 171 done
 172
 173 remove_mapping
 174 exit 0