#!/bin/sh -e

adb root
adb shell <<'SCRIPT'
TERMUX_HOME=/data/data/com.termux/files/home
mount -o remount -w /
umask 022

# Property to listen to might need to be changed
# In the past, we've seen:
# 	cache_key.system_server.account_user_data=*
# 	sys.user.0.ce_available
# If it changed again run getprop both before and after entering
# user's PIN
cat >/system/product/etc/init/termux-root-sshd.rc <<EOF

on property:sys.user.0.ce_available=*
     start sshd

service sshd /system/bin/start-ssh-root_D
    seclabel u:r:su:s0
    user root
    group root
    stdio_to_kmsg
    disabled
EOF

cat >/system/bin/start-ssh-root_D <<'EOF'
#!/bin/sh

PATH=/data/data/com.termux/files/usr/bin:/data/data/com.termux/files/home/bin/:$PATH
chown root:root /data/data/com.termux/files/usr/var/empty
exec /data/data/com.termux/files/usr/bin/sshd -D -o ListenAddress=0.0.0.0:8122 -o AuthorizedKeysFile=/system/etc/ssh/authorized_keys
EOF

chmod 755 /bin/start-ssh-root_D

mkdir -p /system/etc/ssh/
cp $TERMUX_HOME/.ssh/authorized_keys /system/etc/ssh/
cat $TERMUX_HOME/.ssh/id_rsa.pub >> /system/etc/ssh/authorized_keys

cat >/system/addon.d/50-termux-root-sshd.sh <<'UPGRADE'
#!/sbin/sh
#
# ADDOND_VERSION=2
#
# /system/addon.d/50-termux-ssh.sh
# During a LineageOS upgrade, this script backs up files from the addon,
# /system is formatted and reinstalled, then the files are restored.
#

. /tmp/backuptool.functions

list_files() {
cat <<EOF
product/etc/init/termux-root-sshd.rc
bin/start-ssh-root_D
etc/ssh/authorized_keys
EOF
}

case "$1" in
  backup)
    list_files | while read FILE DUMMY; do
      backup_file $S/"$FILE"
    done
  ;;
  restore)
    umask 022
    list_files | while read FILE REPLACEMENT; do
      R=""
      [ -n "$REPLACEMENT" ] && R="$S/$REPLACEMENT"
      [ -f "$C/$S/$FILE" ] && restore_file $S/"$FILE" "$R"
    done
  ;;
  pre-backup)
    # Stub
  ;;
  post-backup)
    # Stub
  ;;
  pre-restore)
    # Stub
  ;;
  post-restore)
    # Stub
  ;;
esac
UPGRADE

mount -o remount -r /

SCRIPT
adb reboot