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|
#!/bin/bash
#
# Script to create a signed container. Intended for op-build integration.
#
# Defaults, initial values
P=${0##*/}
SIGN_MODE=local
HW_KEY_ARGS=""
SW_KEY_ARGS=""
HW_SIG_ARGS=""
SW_SIG_ARGS=""
VERIFY_ARGS=""
DEBUG_ARGS=""
ADDL_ARGS=""
VERBOSE=""
DEBUG=""
WRAP=""
RC=0
#
# Functions
#
usage () {
echo ""
echo " Options:"
echo " -h, --help display this message and exit"
echo " -v, --verbose show verbose output"
echo " -d, --debug show additional debug output"
echo " -w, --wrap column to wrap long output in verbose mode"
echo " -a, --hwPrivKeyA file containing HW key A private key in PEM format"
echo " -b, --hwPrivKeyB file containing HW key B private key in PEM format"
echo " -c, --hwPrivKeyC file containing HW key C private key in PEM format"
echo " -p, --swPrivKeyP file containing SW key P private key in PEM format"
echo " -q, --swPrivKeyQ file containing SW key Q private key in PEM format"
echo " -r, --swPrivKeyR file containing SW key R private key in PEM format"
echo " -l, --protectedPayload file containing the payload to be signed"
echo " -i, --out file to write containerized payload"
echo " -o, --code-start-offset code start offset for software header in hex"
echo " -f, --flags prefix header flags in hex"
echo " -m, --mode signing mode: local, independent or production"
echo " -s, --scratchDir scratch directory to use for file caching, etc."
echo " -L, --label name or identifier of the module being built (8 char max)"
echo " --validate validate the container after build"
echo " --verify verify the container after build, against the provided"
echo " value, or filename containing value, of the HW Keys hash"
echo " --sign-project-config INI file containing configuration properties (options"
echo " set here override those set via cmdline or environment)"
echo ""
exit 1
}
die () {
echo "$P: $@" 1>&2
exit 1
}
is_private_key () {
openssl ec -pubout -in $1 &>/dev/null
}
is_public_key () {
openssl ec -pubin -pubout -in $1 &>/dev/null
}
is_raw_key () {
test $(stat -c%s "$K") -eq 133 -a \
$(dd if="$K" bs=1 count=1 2>/dev/null | xxd -p) == "04"
}
to_lower () {
echo $1 | tr A-Z a-z
}
to_upper () {
echo $1 | tr a-z A-Z
}
checkKey () {
# The variable name
KEY_NAME=$1
# The filename holding the key
local K=${!KEY_NAME}
local KEYS=0
local PUBKEYS=0
if [ -n "$K" ]; then
# Handle the special values __skip, __get and _getkey
if [ "$K" == __skip ]; then
KEYS=0
elif [ "$K" == __get -o "$K" == __getkey ]; then
KEYS=1
PUBKEYS=1
# If it's a file, determine what kind of key it contains
elif [ -f "$K" ]; then
if is_private_key "$K"; then
KEYS=1
elif is_public_key "$K"; then
KEYS=1
PUBKEYS=1
elif is_raw_key "$K"; then
KEYS=1
PUBKEYS=1
else
die "Key $KEY_NAME is neither a public nor private key"
fi
else
die "Can't open file: $K for $KEY_NAME"
fi
fi
# Increment key counts accordingly
if [[ $KEY_NAME =~ HW_KEY* ]]; then
HW_KEY_COUNT=$(expr $HW_KEY_COUNT + $KEYS)
HW_KEY_PUBKEY_COUNT=$(expr $HW_KEY_PUBKEY_COUNT + $PUBKEYS)
elif [[ $KEY_NAME =~ SW_KEY* ]]; then
SW_KEY_COUNT=$(expr $SW_KEY_COUNT + $KEYS)
SW_KEY_PUBKEY_COUNT=$(expr $SW_KEY_PUBKEY_COUNT + $PUBKEYS)
fi
}
parseIni () {
local IFS=" ="
local section property value
while read property value
do
if echo "$property" | egrep -q "^;"
then
# This is a comment, skip it
continue
elif echo "$property" | egrep -q "\[.*]"
then
# This is a section header, read it
section=$(echo $property | tr -d [] )
elif test -n "$value"
then
# This is a property, set it
declare -g "${section}_${property}=$value"
fi
done < $1
}
#
# Main
#
# Convert long options to short
for arg in "$@"; do
shift
case "$arg" in
"--help") set -- "$@" "-h" ;;
"--verbose") set -- "$@" "-v" ;;
"--debug") set -- "$@" "-d" ;;
"--wrap") set -- "$@" "-w" ;;
"--hwPrivKeyA") set -- "$@" "-a" ;;
"--hwPrivKeyB") set -- "$@" "-b" ;;
"--hwPrivKeyC") set -- "$@" "-c" ;;
"--swPrivKeyP") set -- "$@" "-p" ;;
"--swPrivKeyQ") set -- "$@" "-q" ;;
"--swPrivKeyR") set -- "$@" "-r" ;;
"--flags") set -- "$@" "-f" ;;
"--code-start-offset") set -- "$@" "-o" ;;
"--protectedPayload") set -- "$@" "-l" ;;
"--out") set -- "$@" "-i" ;;
"--mode") set -- "$@" "-m" ;;
"--scratchDir") set -- "$@" "-s" ;;
"--label") set -- "$@" "-L" ;;
"--sign-project-FW-token") set -- "$@" "-L" ;;
"--sign-project-config") set -- "$@" "-7" ;;
"--validate") set -- "$@" "-8" ;;
"--verify") set -- "$@" "-9" ;;
*) set -- "$@" "$arg"
esac
done
# Process command-line arguments
while getopts ?dvw:a:b:c:p:q:r:f:o:l:i:m:s:L:7:89: opt
do
case "$opt" in
v) VERBOSE="TRUE";;
d) DEBUG="TRUE";;
w) WRAP="$OPTARG";;
a) HW_KEY_A="$OPTARG";;
b) HW_KEY_B="$OPTARG";;
c) HW_KEY_C="$OPTARG";;
p) SW_KEY_P="$OPTARG";;
q) SW_KEY_Q="$OPTARG";;
r) SW_KEY_R="$OPTARG";;
f) HW_FLAGS="$OPTARG";;
o) CS_OFFSET="$OPTARG";;
l) PAYLOAD="$OPTARG";;
i) OUTPUT="$OPTARG";;
m) SIGN_MODE="$(to_lower $OPTARG)";;
s) SB_SCRATCH_DIR="$OPTARG";;
L) LABEL="$OPTARG";;
7) PROJECT_INI="$OPTARG";;
8) SB_VALIDATE="TRUE";;
9) SB_VERIFY="$OPTARG";;
h|\?) usage;;
esac
done
# Process config properties from op-build _defconfig
test -n "$BR2_CONFIG" && source $BR2_CONFIG &> /dev/null
test -n "$BR2_OPENPOWER_SECUREBOOT_PASS_ON_VALIDATION_ERROR" && SB_PASS_ON_ERROR=Y
# Determine if validate or verify has been requested via the _defconfig
if [ -z "$SB_VALIDATE" -a -n "$BR2_OPENPOWER_SECUREBOOT_CONTAINER_VALIDATE" ]
then
SB_VALIDATE="$BR2_OPENPOWER_SECUREBOOT_CONTAINER_VALIDATE"
fi
if [ -z "$SB_VERIFY" -a -n "$BR2_OPENPOWER_SECUREBOOT_CONTAINER_VERIFY" ]
then
SB_VERIFY="$BR2_OPENPOWER_SECUREBOOT_CONTAINER_VERIFY"
fi
# These are the only env vars that override a command line option
test -n "$SB_SIGN_MODE" && SIGN_MODE="$(to_lower $SB_SIGN_MODE)"
test -n "$SB_PROJECT_INI" && PROJECT_INI="$SB_PROJECT_INI"
# What op-buid calls development mode, we call local mode
test "$SIGN_MODE" == development && SIGN_MODE=local
#
# Parse INI file
#
if [ -n "$PROJECT_INI" ]
then
test ! -f "$PROJECT_INI" && die "Can't open INI file: $PROJECT_INI"
echo "--> $P: Parsing INI file: $PROJECT_INI"
parseIni $PROJECT_INI
SF_USER="$signer_userid"
SF_SSHKEY="$signer_sshkey_file"
SF_EPWD="$signer_epwd_file"
SF_SERVER="$server_hostname"
SB_VALIDATE="$signtool_validate"
SB_VERIFY="$signtool_verify"
SB_PASS_ON_ERROR="$signtool_pass_on_validation_error"
fi
#
# Check required arguments
#
test -z "$PAYLOAD" && die "Input payload required"
test -z "$OUTPUT" && die "Destination imagefile required"
test ! -f "$PAYLOAD" && die "Can't open payload file: $PAYLOAD"
if [ "$SIGN_MODE" == "production" ]
then
test -z "$SF_USER" && die "Production mode selected but no signer userid provided"
test -z "$SF_SSHKEY" && die "Production mode selected but no signer ssh key provided"
test -z "$SF_EPWD" && die "Production mode selected but no signer ePWD provided"
test -z "$SF_SERVER" && die "Production mode selected but no signframework server provided"
fi
# Check input keys
HW_KEY_COUNT=0
HW_KEY_PUBKEY_COUNT=0
SW_KEY_COUNT=0
SW_KEY_PUBKEY_COUNT=0
for KEY in HW_KEY_A HW_KEY_B HW_KEY_C; do
checkKey $KEY
done
for KEY in SW_KEY_P SW_KEY_Q SW_KEY_R; do
checkKey $KEY
done
#
# Set cache directory
#
: ${TMPDIR:=/tmp}
: ${SB_SCRATCH_DIR:=$TMPDIR}
: ${SB_KEEP_CACHE:=true}
: ${LABEL:=IMAGE}
moniker="SIGNTOOL"
test ! -d "$SB_SCRATCH_DIR" && die "Scratch directory not found: $SB_SCRATCH_DIR"
TOPDIR=$(ls -1dt $SB_SCRATCH_DIR/${moniker}_* 2>/dev/null | head -1)
if [ -n "$TOPDIR" ]; then
crtTime=$(date -d @$(basename $TOPDIR | cut -d_ -f2))
echo "--> $P: Using existing cache dir: $TOPDIR, created: $crtTime"
else
buildID="${moniker}_$(date +%s)"
TOPDIR=$SB_SCRATCH_DIR/$buildID
echo "--> $P: Creating new cache dir: $TOPDIR"
mkdir $TOPDIR
fi
T=$TOPDIR/$LABEL
if [ -d "$T" ]; then
echo "--> $P: Using existing cache subdir: $T"
else
echo "--> $P: Creating new cache subdir: $T"
mkdir $T
fi
# Set arguments for (program) execution
test -n "$VERBOSE" && DEBUG_ARGS="$DEBUG_ARGS -v"
test -n "$DEBUG" && DEBUG_ARGS="$DEBUG_ARGS -d"
test -n "$WRAP" && DEBUG_ARGS="$DEBUG_ARGS -w $WRAP"
test -n "$HW_FLAGS" && ADDL_ARGS="$ADDL_ARGS --hw-flags $HW_FLAGS"
test -n "$CS_OFFSET" && ADDL_ARGS="$ADDL_ARGS --sw-cs-offset $CS_OFFSET"
test -n "$LABEL" && ADDL_ARGS="$ADDL_ARGS --label $LABEL"
#
# Get the public keys
#
if [ "$SIGN_MODE" == "local" ]
then
for KEY in a b c; do
# This will evaluate the value of HW_KEY_A, HW_KEY_B, HW_KEY_C
varname=HW_KEY_$(to_upper $KEY); KEYFILE=${!varname}
# Handle the special values, or empty value
test -z "$KEYFILE" && continue
test "$KEYFILE" == __skip && continue
test "$KEYFILE" == __get -o "$KEYFILE" == __getkey && \
die "Cannot $KEYFILE $varname in $SIGN_MODE mode"
# Add to HW_KEY_ARGS
HW_KEY_ARGS="$HW_KEY_ARGS -$KEY $KEYFILE"
done
for KEY in p q r; do
# Find the value of SW_KEY_P, SW_KEY_Q, SW_KEY_R
varname=SW_KEY_$(to_upper $KEY); KEYFILE=${!varname}
# Handle the special values, or empty value
test -z "$KEYFILE" && break
test "$KEYFILE" == __skip && break
test "$KEYFILE" == __get -o "$KEYFILE" == __getkey && \
die "Cannot $KEYFILE $varname in $SIGN_MODE mode"
# Add to SW_KEY_ARGS
SW_KEY_ARGS="$SW_KEY_ARGS -$KEY $KEYFILE"
done
elif [ "$SIGN_MODE" == "production" ]
then
SF_PROJECT_BASE=sign_ecc_pwr_hw_key
for KEY in a b c; do
varname=HW_KEY_$(to_upper $KEY); KEYFILE=${!varname}
# Handle the special values, or empty value
test -z "$KEYFILE" && continue
test "$KEYFILE" == __skip && continue
# TODO: Add full support for user-specified keys in Production mode.
# Currently we use it only to check if __skip was specified.
SF_PROJECT=${SF_PROJECT_BASE}_${KEY}
KEYFILE=project.$SF_PROJECT.HW_key_$KEY.raw
# If no keyfile in the current dir, try to find one. If none found, try to get one.
if [ -f "$T/$KEYFILE" ]
then
echo "--> $P: Found key for HW key $(to_upper $KEY)."
else
KEYFOUND=$(find $TOPDIR -name $KEYFILE | head -1)
if [ -n "$KEYFOUND" ]
then
echo "--> $P: Found key for HW key $(to_upper $KEY)."
cp -p $KEYFOUND $T/
else
echo "--> $P: Requesting public key for HW key $(to_upper $KEY)..."
sf_client -project getpubkeyecc -param "-signproject $SF_PROJECT" \
-epwd $SF_EPWD -comments "Requesting $SF_PROJECT" \
-url sftp://$SF_USER@$SF_SERVER -pkey $SF_SSHKEY -o $T/$KEYFILE
# TODO Check return code, fail on error...
echo "--> $P: Retrieved public key for HW key $(to_upper $KEY)."
fi
fi
# Add to HW_KEY_ARGS
HW_KEY_ARGS="$HW_KEY_ARGS -$KEY $T/$KEYFILE"
done
SF_PROJECT_BASE=sign_ecc_pwr_fw_key_op_bld
for KEY in p q r; do
varname=SW_KEY_$(to_upper $KEY); KEYFILE=${!varname}
# Handle the special values, or empty value
test -z "$KEYFILE" && break
test "$KEYFILE" == __skip && break
SF_PROJECT=${SF_PROJECT_BASE}_${KEY}
KEYFILE=project.$SF_PROJECT.SW_key_$KEY.raw
if [ -f "$T/$KEYFILE" ]
then
echo "--> $P: Found key for SW key $(to_upper $KEY)."
else
KEYFOUND=$(find $TOPDIR -name $KEYFILE | head -1)
if [ -n "$KEYFOUND" ]
then
echo "--> $P: Found key for SW key $(to_upper $KEY)."
cp -p $KEYFOUND $T/
else
echo "--> $P: Requesting public key for SW key $(to_upper $KEY)..."
sf_client -project getpubkeyecc -param "-signproject $SF_PROJECT" \
-epwd $SF_EPWD -comments "Requesting $SF_PROJECT" \
-url sftp://$SF_USER@$SF_SERVER -pkey $SF_SSHKEY -o $T/$KEYFILE
# TODO Check return code, fail on error...
echo "--> $P: Retrieved public key for SW key $(to_upper $KEY)."
fi
fi
# Add to SW_KEY_ARGS
SW_KEY_ARGS="$SW_KEY_ARGS -$KEY $T/$KEYFILE"
done
elif [ -n "$SIGN_MODE" ]
then
die "Unsupported mode: $SIGN_MODE"
fi
#
# Build enough of the container to create the Prefix and Software headers
#
echo "--> $P: Generating signing requests..."
create-container $HW_KEY_ARGS $SW_KEY_ARGS \
--payload $PAYLOAD --imagefile $OUTPUT \
--dumpPrefixHdr $T/prefix_hdr --dumpSwHdr $T/software_hdr \
$DEBUG_ARGS \
$ADDL_ARGS
#
# Prepare the HW and SW key signatures
#
FOUND=""
if [ "$SIGN_MODE" == "local" ]
then
for KEY in a b c; do
SIGFILE=HW_key_$KEY.sig
varname=HW_KEY_$(to_upper $KEY); KEYFILE=${!varname}
# Handle the special values, or empty value
test -z "$KEYFILE" && continue
test "$KEYFILE" == __skip && continue
test "$KEYFILE" == __get -o "$KEYFILE" == __getkey && \
die "Cannot $KEYFILE $varname in $SIGN_MODE mode"
# If no signature found, try to generate one.
if [ -f "$T/$SIGFILE" ]
then
echo "--> $P: Found signature for HW key $(to_upper $KEY)."
elif test -f $KEYFILE && is_private_key $KEYFILE
then
echo "--> $P: Generating signature for HW key $(to_upper $KEY)..."
openssl dgst -SHA512 -sign $KEYFILE $T/prefix_hdr > $T/$SIGFILE
else
echo "--> $P: No signature found and no private key available for HW key $(to_upper $KEY), skipping."
continue
fi
FOUND="${FOUND}$(to_upper $KEY),"
HW_SIG_ARGS="$HW_SIG_ARGS -$(to_upper $KEY) $T/$SIGFILE"
done
for KEY in p q r; do
SIGFILE=SW_key_$KEY.sig
varname=SW_KEY_$(to_upper $KEY); KEYFILE=${!varname}
# Handle the special values, or empty value
test -z "$KEYFILE" && break
test "$KEYFILE" == __skip && break
test "$KEYFILE" == __get -o "$KEYFILE" == __getkey && \
die "Cannot $KEYFILE $varname in $SIGN_MODE mode"
# If no signature found, try to generate one.
if [ -f "$T/$SIGFILE" ]
then
echo "--> $P: Found signature for SW key $(to_upper $KEY)."
elif test -f $KEYFILE && is_private_key $KEYFILE
then
echo "--> $P: Generating signature for SW key $(to_upper $KEY)..."
openssl dgst -SHA512 -sign $KEYFILE $T/software_hdr > $T/$SIGFILE
else
echo "--> $P: No signature found and no private key available for SW key $(to_upper $KEY), skipping."
continue
fi
FOUND="${FOUND}$(to_upper $KEY),"
SW_SIG_ARGS="$SW_SIG_ARGS -$(to_upper $KEY) $T/$SIGFILE"
done
elif [ "$SIGN_MODE" == "production" ]
then
SF_PROJECT_BASE=sign_ecc_pwr_hw_key
for KEY in a b c; do
SF_PROJECT=${SF_PROJECT_BASE}_${KEY}
SIGFILE=project.$SF_PROJECT.HW_sig_$KEY.raw
varname=HW_KEY_$(to_upper $KEY); KEYFILE=${!varname}
# Handle the special values, or empty value
test -z "$KEYFILE" && continue
test "$KEYFILE" == __skip && continue
test "$KEYFILE" == __getkey && continue
# TODO: Add full support for user-specified keys in Production mode.
# Currently we use it only to check if __skip or __getkey was specified.
# If no signature in the current dir, try to find one. If none found, request one.
if [ -f "$T/$SIGFILE" ]
then
echo "--> $P: Found signature for HW key $(to_upper $KEY)."
else
SIGFOUND=$(find $TOPDIR -name $SIGFILE | head -1)
if [ -n "$SIGFOUND" ]
then
echo "--> $P: Found signature for HW key $(to_upper $KEY)."
cp -p $SIGFOUND $T/
else
echo "--> $P: Requesting signature for HW key $(to_upper $KEY)..."
sf_client -project $SF_PROJECT -epwd $SF_EPWD \
-comments "Requesting sig for $SF_PROJECT" \
-url sftp://$SF_USER@$SF_SERVER -pkey $SF_SSHKEY \
-payload $T/prefix_hdr -o $T/$SIGFILE
# TODO Check return code, fail on error...
echo "--> $P: Retrieved signature for HW key $(to_upper $KEY)."
fi
fi
FOUND="${FOUND}$(to_upper $KEY),"
HW_SIG_ARGS="$HW_SIG_ARGS -$(to_upper $KEY) $T/$SIGFILE"
done
SF_PROJECT_BASE=sign_ecc_pwr_fw_key_op_bld
for KEY in p q r; do
SF_PROJECT=${SF_PROJECT_BASE}_${KEY}
SIGFILE=project.$SF_PROJECT.SW_sig_$KEY.raw
varname=SW_KEY_$(to_upper $KEY); KEYFILE=${!varname}
# Handle the special values, or empty value
test -z "$KEYFILE" && break
test "$KEYFILE" == __skip && break
test "$KEYFILE" == __getkey && continue
# If no signature in the current dir, request one.
if [ -f "$T/$SIGFILE" ]
then
echo "--> $P: Found signature for SW key $(to_upper $KEY)."
else
echo "--> $P: Requesting signature for SW key $(to_upper $KEY)..."
sha512sum $T/software_hdr | cut -d' ' -f1 | xxd -p -r > $T/software_hdr.sha512.bin
sf_client -project $SF_PROJECT -epwd $SF_EPWD \
-comments "Requesting sig for $LABEL from $SF_PROJECT" \
-url sftp://$SF_USER@$SF_SERVER -pkey $SF_SSHKEY \
-payload $T/software_hdr.sha512.bin -o $T/$SIGFILE
# TODO Check return code, fail on error...
echo "--> $P: Retrieved signature for SW key $(to_upper $KEY)."
fi
FOUND="${FOUND}$(to_upper $KEY),"
SW_SIG_ARGS="$SW_SIG_ARGS -$(to_upper $KEY) $T/$SIGFILE"
done
fi
#
# Build the full container
#
if [ -n "$HW_SIG_ARGS" -o -n "$SW_SIG_ARGS" ]; then
echo "--> $P: Have signatures for keys $FOUND adding to container..."
create-container $HW_KEY_ARGS $SW_KEY_ARGS \
$HW_SIG_ARGS $SW_SIG_ARGS \
--payload $PAYLOAD --imagefile $OUTPUT \
$DEBUG_ARGS \
$ADDL_ARGS
else
echo "--> $P: No signatures available."
fi
echo "--> $P: Container $LABEL build completed."
#
# Validate, verify the container
#
if [ "$(to_upper $SB_VALIDATE)" != Y -a \
"$(to_upper $SB_VALIDATE)" != TRUE ]
then
SB_VALIDATE=""
fi
if [ "$(to_upper $SB_PASS_ON_ERROR)" != Y -a \
"$(to_upper $SB_PASS_ON_ERROR)" != TRUE ]
then
SB_PASS_ON_ERROR=""
fi
test -n "$SB_VALIDATE" && VERIFY_ARGS="$VERIFY_ARGS --validate"
test -n "$SB_VERIFY" && VERIFY_ARGS="$VERIFY_ARGS --verify $SB_VERIFY"
if [ -n "$VERIFY_ARGS" ]; then
echo
print-container --imagefile $OUTPUT --no-print $VERIFY_ARGS $DEBUG_ARGS
test $? -ne 0 && test -z $SB_PASS_ON_ERROR && RC=1
fi
#
# Cleanup
#
if [ $SB_KEEP_CACHE == false ]; then
echo "--> $P: Removing cache subdir: $T"
rm -rf $T
T=$(dirname $T)
if rmdir $T; then
echo "--> $P: Removing cache dir: $T"
else
echo "--> $P: Not removing cache dir: $T"
fi
fi
exit $RC
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