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gpg-gui.sh
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#!/bin/sh
#
set -e -o pipefail
. /etc/functions
. /etc/gui_functions
. /tmp/config
gpg_flash_rom() {
if [ "$1" = "replace" ]; then
# clear local keyring
[ -e /.gnupg/pubring.gpg ] && rm /.gnupg/pubring.gpg
[ -e /.gnupg/pubring.kbx ] && rm /.gnupg/pubring.kbx
[ -e /.gnupg/trustdb.gpg ] && rm /.gnupg/trustdb.gpg
fi
cat "$PUBKEY" | gpg --import
#update /.gnupg/trustdb.gpg to ultimately trust all user provided public keys
gpg --list-keys --fingerprint --with-colons |sed -E -n -e 's/^fpr:::::::::([0-9A-F]+):$/\1:6:/p' |gpg --import-ownertrust
gpg --update-trust
if (cbfs -o /tmp/gpg-gui.rom -l | grep -q "heads/initrd/.gnupg/pubring.kbx"); then
cbfs -o /tmp/gpg-gui.rom -d "heads/initrd/.gnupg/pubring.kbx"
if (cbfs -o /tmp/gpg-gui.rom -l | grep -q "heads/initrd/.gnupg/pubring.gpg"); then
cbfs -o /tmp/gpg-gui.rom -d "heads/initrd/.gnupg/pubring.gpg"
if [ -e /.gnupg/pubring.gpg ];then
rm /.gnupg/pubring.gpg
fi
fi
fi
#to be compatible with gpgv1
if [ -e /.gnupg/pubring.kbx ];then
cbfs -o /tmp/gpg-gui.rom -a "heads/initrd/.gnupg/pubring.kbx" -f /.gnupg/pubring.kbx
if [ -e /.gnupg/pubring.gpg ];then
rm /.gnupg/pubring.gpg
fi
fi
if [ -e /.gnupg/pubring.gpg ];then
cbfs -o /tmp/gpg-gui.rom -a "heads/initrd/.gnupg/pubring.gpg" -f /.gnupg/pubring.gpg
fi
if (cbfs -o /tmp/gpg-gui.rom -l | grep -q "heads/initrd/.gnupg/trustdb.gpg") then
cbfs -o /tmp/gpg-gui.rom -d "heads/initrd/.gnupg/trustdb.gpg"
fi
if [ -e /.gnupg/trustdb.gpg ]; then
cbfs -o /tmp/gpg-gui.rom -a "heads/initrd/.gnupg/trustdb.gpg" -f /.gnupg/trustdb.gpg
fi
#Remove old method owner trust exported file
if (cbfs -o /tmp/gpg-gui.rom -l | grep -q "heads/initrd/.gnupg/otrust.txt") then
cbfs -o /tmp/gpg-gui.rom -d "heads/initrd/.gnupg/otrust.txt"
fi
# persist user config changes
if (cbfs -o /tmp/gpg-gui.rom -l | grep -q "heads/initrd/etc/config.user") then
cbfs -o /tmp/gpg-gui.rom -d "heads/initrd/etc/config.user"
fi
if [ -e /etc/config.user ]; then
cbfs -o /tmp/gpg-gui.rom -a "heads/initrd/etc/config.user" -f /etc/config.user
fi
/bin/flash.sh /tmp/gpg-gui.rom
if (whiptail --title 'BIOS Flashed Successfully' \
--yesno "Would you like to update the checksums and sign all of the files in /boot?\n\nYou will need your GPG key to continue and this will modify your disk.\n\nOtherwise the system will reboot immediately." 16 90) then
update_checksums
else
/bin/reboot
fi
whiptail --title 'Files in /boot Updated Successfully'\
--msgbox "Checksums have been updated and /boot files signed.\n\nPress Enter to reboot" 16 60
/bin/reboot
}
gpg_post_gen_mgmt() {
GPG_GEN_KEY=`grep -A1 pub /tmp/gpg_card_edit_output | tail -n1 | sed -nr 's/^([ ])*//p'`
gpg --export --armor $GPG_GEN_KEY > "/tmp/${GPG_GEN_KEY}.asc"
if (whiptail --title 'Add Public Key to USB disk?' \
--yesno "Would you like to copy the GPG public key you generated to a USB disk?\n\nYou may need it, if you want to use it outside of Heads later.\n\nThe file will show up as ${GPG_GEN_KEY}.asc" 16 90) then
mount_usb
mount -o remount,rw /media
cp "/tmp/${GPG_GEN_KEY}.asc" "/media/${GPG_GEN_KEY}.asc"
if [ $? -eq 0 ]; then
whiptail --title "The GPG Key Copied Successfully" \
--msgbox "${GPG_GEN_KEY}.asc copied successfully." 16 60
else
whiptail $BG_COLOR_ERROR --title 'ERROR: Copy Failed' \
--msgbox "Unable to copy ${GPG_GEN_KEY}.asc to /media" 16 60
fi
umount /media
fi
if (whiptail --title 'Add Public Key to Running BIOS?' \
--yesno "Would you like to add the GPG public key you generated to the BIOS?\n\nThis makes it a trusted key used to sign files in /boot\n\n" 16 90) then
/bin/flash.sh -r /tmp/gpg-gui.rom
if [ ! -s /tmp/gpg-gui.rom ]; then
whiptail $BG_COLOR_ERROR --title 'ERROR: BIOS Read Failed!' \
--msgbox "Unable to read BIOS" 16 60
exit 1
fi
PUBKEY="/tmp/${GPG_GEN_KEY}.asc"
gpg_flash_rom
fi
}
gpg_add_key_reflash() {
if (whiptail --title 'GPG public key required' \
--yesno "This requires you insert a USB drive containing:\n* Your GPG public key (*.key or *.asc)\n\nAfter you select this file, this program will copy and reflash your BIOS\n\nDo you want to proceed?" 16 90) then
mount_usb
if grep -q /media /proc/mounts ; then
find /media -name '*.key' > /tmp/filelist.txt
find /media -name '*.asc' >> /tmp/filelist.txt
file_selector "/tmp/filelist.txt" "Choose your GPG public key"
# bail if user didn't select a file
if [ "$FILE" = "" ]; then
return
else
PUBKEY=$FILE
fi
/bin/flash.sh -r /tmp/gpg-gui.rom
if [ ! -s /tmp/gpg-gui.rom ]; then
whiptail $BG_COLOR_ERROR --title 'ERROR: BIOS Read Failed!' \
--msgbox "Unable to read BIOS" 16 60
exit 1
fi
if (whiptail --title 'Update ROM?' \
--yesno "This will reflash your BIOS with the updated version\n\nDo you want to proceed?" 16 90) then
gpg_flash_rom
else
exit 0
fi
fi
fi
}
while true; do
unset menu_choice
whiptail --clear --title "GPG Management Menu" \
--menu 'Select the GPG function to perform' 20 90 10 \
'r' ' Add GPG key to running BIOS and reflash' \
'a' ' Add GPG key to standalone BIOS image and flash' \
'e' ' Replace GPG key(s) in the current ROM and reflash' \
'l' ' List GPG keys in your keyring' \
'p' ' Export public GPG key to USB drive' \
'g' ' Generate GPG keys manually on a USB security token' \
'x' ' Exit' \
2>/tmp/whiptail || recovery "GUI menu failed"
menu_choice=$(cat /tmp/whiptail)
case "$menu_choice" in
"x" )
exit 0
;;
"a" )
if (whiptail --title 'ROM and GPG public key required' \
--yesno "This requires you insert a USB drive containing:\n* Your GPG public key (*.key or *.asc)\n* Your BIOS image (*.rom)\n\nAfter you select these files, this program will reflash your BIOS\n\nDo you want to proceed?" 16 90) then
mount_usb
if grep -q /media /proc/mounts ; then
find /media -name '*.key' > /tmp/filelist.txt
find /media -name '*.asc' >> /tmp/filelist.txt
file_selector "/tmp/filelist.txt" "Choose your GPG public key"
if [ "$FILE" == "" ]; then
return
else
PUBKEY=$FILE
fi
find /media -name '*.rom' > /tmp/filelist.txt
file_selector "/tmp/filelist.txt" "Choose the ROM to load your key onto"
if [ "$FILE" == "" ]; then
return
else
ROM=$FILE
fi
cp "$ROM" /tmp/gpg-gui.rom
if (whiptail --title 'Flash ROM?' \
--yesno "This will replace your old ROM with $ROM\n\nDo you want to proceed?" 16 90) then
gpg_flash_rom
else
exit 0
fi
fi
fi
;;
"r" )
gpg_add_key_reflash
exit 0;
;;
"e" )
# clear local keyring
[ -e /.gnupg/pubring.gpg ] && rm /.gnupg/pubring.gpg
[ -e /.gnupg/pubring.kbx ] && rm /.gnupg/pubring.kbx
[ -e /.gnupg/trustdb.gpg ] && rm /.gnupg/trustdb.gpg
# add key and reflash
gpg_add_key_reflash
;;
"l" )
GPG_KEYRING=`gpg -k`
whiptail --title 'GPG Keyring' \
--msgbox "${GPG_KEYRING}" 16 60
;;
"p" )
if (whiptail --title 'Export Public Key(s) to USB drive?' \
--yesno "Would you like to copy GPG public key(s) to a USB drive?\n\nThe file will show up as public-key.asc" 16 90) then
mount_usb
mount -o remount,rw /media
gpg --export --armor > "/tmp/public-key.asc"
cp "/tmp/public-key.asc" "/media/public-key.asc"
if [ $? -eq 0 ]; then
whiptail --title "The GPG Key Copied Successfully" \
--msgbox "public-key.asc copied successfully." 16 60
else
whiptail $BG_COLOR_ERROR --title 'ERROR: Copy Failed' \
--msgbox "Unable to copy public-key.asc to /media" 16 60
fi
umount /media
fi
;;
"g" )
confirm_gpg_card
echo -e "\n\n\n\n"
echo "********************************************************************************"
echo "*"
echo "* INSTRUCTIONS:"
echo "* Type 'admin' and then 'generate' and follow the prompts to generate a GPG key."
echo "* Type 'quit' once you have generated the key to exit GPG."
echo "*"
echo "********************************************************************************"
gpg --card-edit > /tmp/gpg_card_edit_output
if [ $? -eq 0 ]; then
gpg_post_gen_mgmt
fi
;;
esac
done
exit 0