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#!/bin/sh
DISTRIBUTOR=ubuntu
efi_vars_dir=/sys/firmware/efi/vars
EFI_GLOBAL_VARIABLE=8be4df61-93ca-11d2-aa0d-00e098032b8c
SB="$efi_vars_dir/SecureBoot-$EFI_GLOBAL_VARIABLE/data"
#if we have SB enabled, don't bother to install the unsigned file
if [ -e "$SB" ] && \
[ "$(( $(printf 0x%x \'"$(cat $SB | cut -b1)") & 1 ))" = 1 ]; then
SECURE_BOOT="1"
fi
if [ ! -d "$efi_vars_dir" ]; then
echo "System not running in EFI mode, not installing to EFI system partition."
exit 0
fi
for BINARY in $(find /usr/lib/fwupdate -name '*.efi' -printf "%f\n"); do
ESP="/boot/efi/EFI/$DISTRIBUTOR"
ESP_FILE="$ESP/$BINARY"
SIGNED_FILE="/usr/lib/fwupdate/$BINARY.signed"
UNSIGNED_FILE="/usr/lib/fwupdate/$BINARY"
if [ -f "$ESP_FILE" ]; then
ESP_MD5=$(md5sum $ESP_FILE | sed 's, .*,,')
fi
if [ -f "$SIGNED_FILE" ]; then
COMPARE=$SIGNED_FILE
elif [ -z "$SECURE_BOOT" ]; then
COMPARE=$UNSIGNED_FILE
fi
mkdir -p $ESP/fw
if [ -n "$COMPARE" ]; then
COMPARE_MD5=$(md5sum $COMPARE | sed 's, .*,,')
if [ "$COMPARE_MD5" != "$ESP_MD5" ]; then
rm -f $ESP_FILE
echo "Installing $BINARY to EFI system partition."
cp $COMPARE $ESP_FILE
fi
else
echo "Signed binary for $BINARY is not available, not installing binary to EFI system partition."
fi
done