tests/test_tpm2_partial_reads

   1 #!/usr/bin/env bash
   2
   3 # For the license, see the LICENSE file in the root directory.
   4 # set -x
   5
   6 cd $(dirname "$0")
   7
   8 ROOT=${abs_top_builddir:-$(pwd)/..}
   9
  10 export SWTPM_INTERFACE=cuse
  11
  12 VTPM_NAME="vtpm-test-tpm2-partial-reads"
  13 SWTPM_DEV_NAME="/dev/${VTPM_NAME}"
  14 export TPM_PATH="$(mktemp -d)" || exit 1
  15 CMD_PATH="${TPM_PATH}/cmd"
  16
  17 function cleanup()
  18 {
  19         pid=${SWTPM_PID}
  20         if [ -n "$pid" ]; then
  21                 kill_quiet -9 $pid
  22         fi
  23         rm -rf $TPM_PATH
  24 }
  25
  26 function swtpm_read_n_bytes_fd100()
  27 {
  28         # read n bytes from fd 100 and write to stdout
  29         python -c "import os; os.write(1, os.read(100, $1))" | \
  30                 od -t x1 -A n
  31 }
  32
  33 trap "cleanup" EXIT
  34
  35 [ "${SWTPM_INTERFACE}" == "cuse" ] && source test_cuse
  36 source common
  37 skip_test_no_tpm20 "${SWTPM_EXE}"
  38
  39 run_swtpm ${SWTPM_INTERFACE} --tpm2
  40
  41 kill_quiet -0 ${SWTPM_PID}
  42 if [ $? -ne 0 ]; then
  43         echo "Error: ${SWTPM_INTERFACE} TPM did not start."
  44         exit 1
  45 fi
  46
  47 # Init the TPM
  48 run_swtpm_ioctl ${SWTPM_INTERFACE} -i
  49 if [ $? -ne 0 ]; then
  50         echo "Error: Could not initialize the ${SWTPM_INTERFACE} TPM."
  51         exit 1
  52 fi
  53
  54 kill_quiet -0 ${SWTPM_PID} 2>/dev/null
  55 if [ $? -ne 0 ]; then
  56         echo "Error: ${SWTPM_INTERFACE} TPM not running anymore after INIT."
  57         exit 1
  58 fi
  59
  60 # Prepare the TPM2_Startup
  61 echo -en '\x80\x01\x00\x00\x00\x0c\x00\x00\x01\x44\x00\x00' > "${CMD_PATH}"
  62
  63 swtpm_open_cmddev ${SWTPM_INTERFACE} 100
  64
  65 # Startup the TPM2
  66 cat "${CMD_PATH}" >&100
  67
  68 # Read 4 and then 6 bytes of the response
  69 res1=$(swtpm_read_n_bytes_fd100 4)
  70 exp1=' 80 01 00 00'
  71 if [ "$res1" != "$exp1" ]; then
  72         echo "1st Startup: Unexpected 1st response part"
  73         echo "Expected: $exp1"
  74         echo "Actual  : $res1"
  75         exit 1
  76 fi
  77
  78 res2=$(swtpm_read_n_bytes_fd100 6)
  79 exp2=' 00 0a 00 00 00 00'
  80 if [ "$res2" != "$exp2" ]; then
  81         echo "1st Startup: Unexpected 2nd response part"
  82         echo "Expected: $exp2"
  83         echo "Actual  : $res2"
  84         exit 1
  85 fi
  86
  87 # Startup the TPM2 again (will fail, but that's ok)
  88 cat "${CMD_PATH}" >&100
  89
  90 # Read 4 and then only 4 bytes of the response
  91 res1=$(swtpm_read_n_bytes_fd100 4)
  92 exp1=' 80 01 00 00'
  93 if [ "$res1" != "$exp1" ]; then
  94         echo "2nd Startup: Unexpected 1st response part"
  95         echo "Expected: $exp1"
  96         echo "Actual  : $res1"
  97         exit 1
  98 fi
  99
 100 res2=$(swtpm_read_n_bytes_fd100 4)
 101 exp2=' 00 0a 00 00'
 102 if [ "$res2" != "$exp2" ]; then
 103         echo "2nd Startup: Unexpected 2nd part"
 104         echo "Expected: $exp2"
 105         echo "Actual  : $res2"
 106         exit 1
 107 fi
 108
 109 # Startup the TPM2 again (will fail, but that's ok)
 110 cat "${CMD_PATH}" >&100
 111
 112 # Read 4 and then 6 bytes of the response
 113 res1=$(swtpm_read_n_bytes_fd100 4)
 114 exp1=' 80 01 00 00'
 115 if [ "$res1" != "$exp1" ]; then
 116         echo "3rd Startup: Unexpected 1st response part"
 117         echo "Expected: $exp1"
 118         echo "Actual  : $res1"
 119         exit 1
 120 fi
 121
 122 res2=$(swtpm_read_n_bytes_fd100 6)
 123 exp2=' 00 0a 00 00 01 00'
 124 if [ "$res2" != "$exp2" ]; then
 125         echo "3rd Startup: Unexpected 2nd part"
 126         echo "Expected: $exp2"
 127         echo "Actual  : $res2"
 128         exit 1
 129 fi
 130 exec 100>&-
 131
 132 run_swtpm_ioctl ${SWTPM_INTERFACE} -s
 133 if [ $? -ne 0 ]; then
 134         echo "Error: Could not shut down the ${SWTPM_INTERFACE} TPM."
 135         exit 1
 136 fi
 137
 138 if wait_process_gone ${SWTPM_PID} 4; then
 139         echo "Error: ${SWTPM_INTERFACE} TPM should not be running anymore."
 140         exit 1
 141 fi
 142
 143 if [ ! -e $STATE_FILE ]; then
 144         echo "Error: TPM state file $STATE_FILE does not exist."
 145         exit 1
 146 fi
 147
 148 echo "OK"
 149
 150 exit 0