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| 1 | +#!/bin/bash -x |
| 2 | +# vim: set tabstop=8 shiftwidth=4 softtabstop=4 expandtab smarttab colorcolumn=80: |
| 3 | +# |
| 4 | +# Copyright (c) 2019 Red Hat, Inc. |
| 5 | +# Author: Sergio Correia <scorreia@redhat.com> |
| 6 | +# |
| 7 | +# This program is free software: you can redistribute it and/or modify |
| 8 | +# it under the terms of the GNU General Public License as published by |
| 9 | +# the Free Software Foundation, either version 3 of the License, or |
| 10 | +# (at your option) any later version. |
| 11 | +# |
| 12 | +# This program is distributed in the hope that it will be useful, |
| 13 | +# but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | +# GNU General Public License for more details. |
| 16 | +# |
| 17 | +# You should have received a copy of the GNU General Public License |
| 18 | +# along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 19 | +# |
| 20 | + |
| 21 | +. tests-common-functions |
| 22 | + |
| 23 | +SWTPM_BIN="@SWTPM_BIN@" |
| 24 | +SWTPM_SETUP_BIN="@SWTPM_SETUP_BIN@" |
| 25 | +SWTPM_BIOS_BIN="@SWTPM_BIOS_BIN@" |
| 26 | + |
| 27 | +SWTPM_SOCKET_PID= |
| 28 | + |
| 29 | +function on_exit() { |
| 30 | + popd || error "Unable to change directory" |
| 31 | + if [ ! -d "$TESTDIR" ] || ! rm -rf "$TESTDIR"; then |
| 32 | + echo "Delete temporary files failed!" >&2 |
| 33 | + echo "You need to clean up: $TESTDIR" >&2 |
| 34 | + exit 1 |
| 35 | + fi |
| 36 | + |
| 37 | + # Cleanup sw emulation |
| 38 | + if [ -n "$SWTPM_SOCKET_PID" ]; then |
| 39 | + kill $SWTPM_SOCKET_PID >/dev/null 2>&1 |
| 40 | + sleep .5 |
| 41 | + # swtpm does not always terminate gracefully, so kill it |
| 42 | + kill -9 $SWTPM_SOCKET_PID >/dev/null 2>&1 |
| 43 | + fi |
| 44 | +} |
| 45 | +if ! TESTDIR="$(mktemp -d)"; then |
| 46 | + echo "Creating a temporary dir for TPM files failed!" >&2 |
| 47 | + exit 1 |
| 48 | +fi |
| 49 | +trap 'on_exit' EXIT |
| 50 | +pushd "$TESTDIR" || error "Unable to change directory" |
| 51 | + |
| 52 | + |
| 53 | +tpm2_hw_available() { |
| 54 | + # Old environment variables for tpm2-tools 3.0 |
| 55 | + export TPM2TOOLS_TCTI_NAME=device |
| 56 | + export TPM2TOOLS_DEVICE_FILE= |
| 57 | + for dev in /dev/tpmrm?; do |
| 58 | + [ -e "${dev}" ] || continue |
| 59 | + TPM2TOOLS_DEVICE_FILE="${dev}" |
| 60 | + break |
| 61 | + done |
| 62 | + |
| 63 | + # New environment variable for tpm2-tools >= 3.1 |
| 64 | + export TPM2TOOLS_TCTI="${TPM2TOOLS_TCTI_NAME}:${TPM2TOOLS_DEVICE_FILE}" |
| 65 | + |
| 66 | + if [ -z "${TPM2TOOLS_DEVICE_FILE}" ]; then |
| 67 | + echo "A TPM2 device with the in-kernel resource manager is needed!" >&2 |
| 68 | + return 1 |
| 69 | + fi |
| 70 | + |
| 71 | + if ! [[ -r "${TPM2TOOLS_DEVICE_FILE}" \ |
| 72 | + && -w "${TPM2TOOLS_DEVICE_FILE}" ]]; then |
| 73 | + echo "The ${TPM2TOOLS_DEVICE_FILE} device must be readable and writable!" >&2 |
| 74 | + return 1 |
| 75 | + fi |
| 76 | + return 0 |
| 77 | +} |
| 78 | + |
| 79 | +tpm2_version() { |
| 80 | + local _tpm2tools_info |
| 81 | + local _match='version="(.)\.' |
| 82 | + _tpm2tools_info="$(tpm2_createprimary -v)" |
| 83 | + [[ ${_tpm2tools_info} =~ ${_match} ]] && TPM2TOOLS_VERSION="${BASH_REMATCH[1]}" |
| 84 | + if [[ $TPM2TOOLS_VERSION -lt 3 ]] || [[ $TPM2TOOLS_VERSION -gt 5 ]]; then |
| 85 | + echo "The tpm2 pin requires a tpm2-tools version between 3 and 5" >&2 |
| 86 | + return 1 |
| 87 | + fi |
| 88 | + export TPM2TOOLS_VERSION |
| 89 | +} |
| 90 | + |
| 91 | +tpm2_sw_check_preconditions() { |
| 92 | + [ -x "${SWTPM_BIN}" ] || skip_test "Skipping TPM2 test with software emulation, swtpm not found" |
| 93 | + [ -x "${SWTPM_SETUP_BIN}" ] || skip_test "Skipping TPM2 test with software emulation, swtpm_setup not found" |
| 94 | + [ -x "${SWTPM_BIOS_BIN}" ] || skip_test "Skipping TPM2 test with software emulation, swtpm_bios not found" |
| 95 | + |
| 96 | + if ! "${SWTPM_BIN}" socket --print-capabilities | jq -e '(.version | test("^0\\.[0-6](\\..*)?$")) or (.features | index("tpm-2.0"))' >/dev/null 2>&1; then |
| 97 | + skip_test "Skipping TPM2 test with software emulation, no support for TPM 2.0 in swtpm" |
| 98 | + fi |
| 99 | +} |
| 100 | + |
| 101 | +tpm2_start_emulation() { |
| 102 | + local socket_wait |
| 103 | + local server_sock |
| 104 | + local control_sock |
| 105 | + |
| 106 | + echo "Starting TPM 2 emulation" >&2 |
| 107 | + |
| 108 | + # Setup TPM 2 data |
| 109 | + "${SWTPM_SETUP_BIN}" --tpm-state "$TESTDIR" --tpm2 --create-ek-cert --create-platform-cert --lock-nvram --display >&2 || error "Unable to setup TPM 2 emulation" |
| 110 | + |
| 111 | + # Start emulation over socket |
| 112 | + server_sock="$TESTDIR"/swtpm.sock |
| 113 | + control_sock="$TESTDIR"/swtpm.sock.ctrl |
| 114 | + "${SWTPM_BIN}" socket --tpmstate dir="$TESTDIR" --tpm2 --ctrl type=unixio,path="$control_sock" --server type=unixio,path="$server_sock" --flags not-need-init >&2 & |
| 115 | + SWTPM_SOCKET_PID=$! |
| 116 | + |
| 117 | + socket_wait=1 |
| 118 | + while [ $socket_wait -le 100 ]; do |
| 119 | + [ -S "$server_sock" ] && break |
| 120 | + socket_wait=$((socket_wait + 1)) |
| 121 | + sleep 0.1 |
| 122 | + done |
| 123 | + [ "$socket_wait" -gt 100 ] && error "Unable to start TPM 2 emulation" |
| 124 | + |
| 125 | + # Run BIOS checks |
| 126 | + "${SWTPM_BIOS_BIN}" --tpm2 --unix "$server_sock" || error "Unable to prepare TPM 2 emulation" |
| 127 | + |
| 128 | + # Use swtpm in tpm2-tools |
| 129 | + export TPM2TOOLS_TCTI="swtpm:path=$server_sock" |
| 130 | +} |
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