#!/bin/bash
set -e

#grubSyntax
#version 1.1.0
#autoconfigurador de items de menu para grub/brg
#basado en scripts del paquete de grub
#Antonio Doblas Viso
#Universidad de Málaga
#@version 1.1.1 - En los parámetros del kernel se sustituye el UUID por el dispositivo.
#@version 1.1.1 - Detecta cargador de Windows en directorio Part-xx-yy dentro de ESP (#802 #888)

DISK=
PART=



if [ $# == 3 ]; then
	DISK=$1;PART=$2;KERNELPARAM=$3
fi

if [ $# == 2 ]; then
	DISK=$1;PART=$2
fi

if [ $# == 1 ]; then
	KERNELPARAM=$1
fi


#Versión de scripts compatible con la versión 1.99 de grub-probe
#Uso del grub-probe 1.99  según arquitectura
grub_probe=${grub_probe:-$OGBIN/grub-probe1.99_$(arch)}

#librerias del osProber para kernel antiguos: detecta e identifica sistema operativos.
if grub-install --version | grep 1.99 ; then
	cp -r /opt/opengnsys/lib/os-probes/* /usr/lib/os-probes/
else
	# Librería os-probe para cargador de microsoft en dir part-x-y (uefi)
	OSPROBE_MS_PART="/opt/opengnsys/lib/os-probes/mounted/efi/31part-x-y"
	[ -f $OSPROBE_MS_PART ] && cp $OSPROBE_MS_PART /usr/lib/os-probes/mounted/efi
fi


#Autoreconocimiento del ogLive en cache
#fichero de reconocimeinto de grub
#fichero de lsb-release en la cache (al final de este scripts se elimina esta entrada para que el browser no lo muestre

if [ $(ls /opt/opengnsys/cache/boot/$oglivedir/ogvmlinuz 2>/dev/null) ]; then
	sed -i 's|/boot/\${oglivedir}/ogvmlinuz |/vmlinuz |i' /usr/lib/linux-boot-probes/mounted/90fallback
	sed -i 's|/vmlinuz |/vmlinuz /boot/\${oglivedir}/ogvmlinuz |1' /usr/lib/linux-boot-probes/mounted/90fallback
	mkdir -p /opt/opengnsys/cache/etc/
	echo "DISTRIB_ID=Ubuntu" > /opt/opengnsys/cache/etc/lsb-release
	echo "DISTRIB_RELEASE= " >> /opt/opengnsys/cache/etc/lsb-release
	echo $oglivedir | awk -F- ' {print "DISTRIB_CODENAME="$2 }' >> /opt/opengnsys/cache/etc/lsb-release
	echo "DISTRIB_DESCRIPTION=OpenGnsys Live" >> /opt/opengnsys/cache/etc/lsb-release
fi

#ver linea 195 detección de los os en variable OSPROBED

OG_prepare_grub_to_access_device ()
{
	device="$1"
	loop_file=
	case ${device} in
		/dev/loop/*|/dev/loop[0-9])
			grub_loop_device="${device#/dev/}"
			loop_file=`losetup "${device}" | sed -e "s/^[^(]*(\([^)]\+\)).*/\1/"`
			case $loop_file in
				/dev/*) ;;
				*)
					loop_device="${device}"
					device=`"${grub_probe}" --target=device "${loop_file}"` || return 0
					;;
			esac
			;;
	esac
	if dmsetup status $device 2>/dev/null | grep -q 'crypt[[:space:]]$'; then
		grub_warn \
			"$device is a crypto device, which GRUB cannot read directly.  Some" \
			"necessary modules may be missing from /boot/grub/grub.cfg.  You may" \
			"need to list them in GRUB_PRELOAD_MODULES in /etc/default/grub.  See" \
			"http://bugs.debian.org/542165 for details."
		return 0
	fi
	# Abstraction modules aren't auto-loaded.
	abstraction="`"${grub_probe}" --device "${device}" --target=abstraction`"
	for module in ${abstraction} ; do
		echo "insmod ${module}"
	done
	partmap="`"${grub_probe}" --device "${device}" --target=partmap`"
	for module in ${partmap} ; do
		case "${module}" in
			netbsd | openbsd)
				echo "insmod part_bsd";;
			*)
				echo "insmod part_${module}";;
		esac
	done
	fs="`"${grub_probe}" --device "${device}" --target=fs`"
	for module in ${fs} ; do
		echo "insmod ${module}"
	done
	# If there's a filesystem UUID that GRUB is capable of identifying, use it;
	# otherwise set root as per value in device.map. 
	#OG modificacion
	# PARCHE UHU ...SI el disco es nvme se cambia su nomenclatura, ya que grub_probe no funciona bien
	if [[ $DEVICE  == *"nvme"* ]]; then
		#DEVICE=`echo $DEVICE | sed -e "s/\/dev\/nvme/hd/g" | sed -e "s/n.*p/,gpt/g"`
		#TODO Detectar si es GPT o no...
		read -r D P <<< `ogDevToDisk $DEVICE`
		if [ "`ogGetPartitionTableType $D`" == "GPT" ]; then
			# Si es gpt se sustituye por "hd(X-1),gptY"
			#device=`echo $device | sed -e "s/\/dev\/nvme/hd/g" | sed -e "s/n.*p/,gpt/g"`
			nvmeDevice=`echo "hd"$(expr $D - 1)",gpt$P"`

		else
			# Sino se sustituye por hd(X-1),(Y-1)
			nvmeDevice=`echo "hd"$(expr $D - 1)","$(expr $P - 1)`
		fi
		echo "set root='$nvmeDevice'"
	else
		echo "set root='`"${grub_probe}" --device "${device}" --target=drive`'"
	fi

	#if fs_uuid="`"${grub_probe}" --device "${device}" --target=fs_uuid 2> /dev/null`" ; then
	#  echo "search --no-floppy --fs-uuid --set=root ${fs_uuid}"
	#fi

	if [ "x${loop_file}" != x ]; then
		loop_mountpoint="$(awk '"'${loop_file}'" ~ "^"$2 && $2 != "/" { print $2 }' /proc/mounts | tail -n1)"
		if [ "x${loop_mountpoint}" != x ]; then
			echo "loopback ${grub_loop_device} ${loop_file#$loop_mountpoint}"
			echo "set root=(${grub_loop_device})"
		fi
	fi
}





# grub-mkconfig helper script.
# Copyright (C) 2006,2007,2008,2009  Free Software Foundation, Inc.
#
# GRUB is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# GRUB is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GRUB.  If not, see <http://www.gnu.org/licenses/>.


prefix=/usr
exec_prefix=${prefix}
libdir=${exec_prefix}/lib

. ${libdir}/grub/grub-mkconfig_lib

found_other_os=

make_timeout () {
	if [ "x${found_other_os}" = "x" ] ; then
		if [ "x${1}" != "x" ] ; then
			if [ "x${GRUB_HIDDEN_TIMEOUT_QUIET}" = "xtrue" ] ; then
				verbose=
			else
				verbose=" --verbose"
			fi

			if [ "x${1}" = "x0" ] ; then
				cat <<EOF
if [ "x\${timeout}" != "x-1" ]; then
  if keystatus; then
    if keystatus --shift; then
      set timeout=-1
    else
      set timeout=0
    fi
  else
    if sleep$verbose --interruptible 3 ; then
      set timeout=0
    fi
  fi
fi
EOF
      else
	      cat << EOF
if [ "x\${timeout}" != "x-1" ]; then
  if sleep$verbose --interruptible ${GRUB_HIDDEN_TIMEOUT} ; then
    set timeout=0
  fi
fi
EOF
      fi
    fi
  fi
}

adjust_timeout () {
	if [ "x$GRUB_BUTTON_CMOS_ADDRESS" != "x" ]; then
		cat <<EOF
if cmostest $GRUB_BUTTON_CMOS_ADDRESS ; then
EOF
make_timeout "${GRUB_HIDDEN_TIMEOUT_BUTTON}" "${GRUB_TIMEOUT_BUTTON}"
echo else
make_timeout "${GRUB_HIDDEN_TIMEOUT}" "${GRUB_TIMEOUT}"
echo fi
  else
	  make_timeout "${GRUB_HIDDEN_TIMEOUT}" "${GRUB_TIMEOUT}"
  fi
}

if [ "x${GRUB_DISABLE_OS_PROBER}" = "xtrue" ]; then
	adjust_timeout
	exit 0
fi

if [ -z "`which os-prober 2> /dev/null`" -o -z "`which linux-boot-prober 2> /dev/null`" ] ; then
	# missing os-prober and/or linux-boot-prober
	adjust_timeout
	exit 0
fi

case "$1" in


esac



# ADV  OSPROBED
if [ -n "${DISK}" ]; then
	#Si $DISK esta definido buscar en el disco y la particion parametro 1 y 2 
	OSSEARCH=$(ogDiskToDev $DISK $PART)
	OSPROBED="`os-prober | grep $OSSEARCH | tr ' ' '^' | paste -s -d ' '`"
else
	#si no esta definido
	OSPROBED="`os-prober | tr ' ' '^' | paste -s -d ' '`"
fi

#DISK=${DISK:-"1"}
#echo $OSSEARCH 
#echo "$OSPROBED"


if [ -z "${OSPROBED}" ] ; then
	# empty os-prober output, nothing doing
	adjust_timeout
	exit 0
fi

osx_entry() {
	found_other_os=1
	cat << EOF
menuentry "${LONGNAME} (${2}-bit) (on ${DEVICE})" --class osx --class darwin --class os {
EOF
save_default_entry | sed -e "s/^/\t/"
prepare_grub_to_access_device ${DEVICE} | sed -e "s/^/\t/"
cat << EOF
	load_video
	set do_resume=0
	if [ /var/vm/sleepimage -nt10 / ]; then
	   if xnu_resume /var/vm/sleepimage; then
	     set do_resume=1
     fi
	fi
	if [ \$do_resume = 0 ]; then
	   xnu_uuid ${OSXUUID} uuid
	   if [ -f /Extra/DSDT.aml ]; then
	      acpi -e /Extra/DSDT.aml
      fi
	   $1 /mach_kernel boot-uuid=\${uuid} rd=*uuid
	   if [ /System/Library/Extensions.mkext -nt /System/Library/Extensions ]; then
	      xnu_mkext /System/Library/Extensions.mkext
      else
	      xnu_kextdir /System/Library/Extensions
      fi
	   if [ -f /Extra/Extensions.mkext ]; then
	      xnu_mkext /Extra/Extensions.mkext
      fi
	   if [ -d /Extra/Extensions ]; then
	      xnu_kextdir /Extra/Extensions
      fi
	   if [ -f /Extra/devprop.bin ]; then
	      xnu_devprop_load /Extra/devprop.bin
      fi
	   if [ -f /Extra/splash.jpg ]; then
	      insmod jpeg
	      xnu_splash /Extra/splash.jpg
      fi
	   if [ -f /Extra/splash.png ]; then
	      insmod png
	      xnu_splash /Extra/splash.png
      fi
	   if [ -f /Extra/splash.tga ]; then
	      insmod tga
	      xnu_splash /Extra/splash.tga
      fi
	fi
}
EOF
}

wubi=

for OS in ${OSPROBED} ; do
	DEVICE="`echo ${OS} | cut -d ':' -f 1`"
	LONGNAME="`echo ${OS} | cut -d ':' -f 2 | tr '^' ' '`"
	LABEL="`echo ${OS} | cut -d ':' -f 3 | tr '^' ' '`"
	BOOT="`echo ${OS} | cut -d ':' -f 4`"

	if [ -z "${LONGNAME}" ] ; then
		LONGNAME="${LABEL}"
	fi

	echo "Found ${LONGNAME} on ${DEVICE}" >&2

	case ${BOOT} in
		chain)

			case ${LONGNAME} in
				Windows*)
					if [ -z "$wubi" ]; then
						if [ -x /usr/share/lupin-support/grub-mkimage ] && \
							/usr/share/lupin-support/grub-mkimage --test; then
						wubi=yes
					else
						wubi=no
					fi
				fi
				if [ "$wubi" = yes ]; then
					echo "Skipping ${LONGNAME} on Wubi system" >&2
					continue
				fi
				;;
		esac
		#adv
		LABELCLASS=$(echo "${LONGNAME}" | awk '{print tolower($1$2);}')

		found_other_os=1
		cat << EOF
menuentry "${LONGNAME} (on ${DEVICE})" --class $LABELCLASS --class windows {
EOF
save_default_entry | sed -e "s/^/\t/"
#ADV      prepare_grub_to_access_device ${DEVICE} | sed -e "s/^/\t/"
OG_prepare_grub_to_access_device ${DEVICE} | sed -e "s/^/\t/"

case ${LONGNAME} in
	Windows\ Vista*|Windows\ 7*|Windows\ Server\ 2008*)
		;;
	*)
		#ADV	  cat << EOF
		#ADV	drivemap -s (hd0) \${root}
		#ADV EOF
		;;
esac

cat <<EOF
	chainloader +1
}
EOF
;;
    efi)

	    found_other_os=1
	    EFIPATH=${DEVICE#*@}
	    DEVICE=${DEVICE%@*}
	    onstr="$(gettext_printf "(on %s)" "${DEVICE}")"
	    cat << EOF
menuentry '$(echo "${LONGNAME} $onstr" | grub_quote)' --class windows --class os \$menuentry_id_option 'osprober-efi-$(grub_get_device_id "${DEVICE}")' {
EOF
save_default_entry | sed -e "s/^/\t/"
#ADV      prepare_grub_to_access_device ${DEVICE} | sed -e "s/^/\t/"
OG_prepare_grub_to_access_device ${DEVICE} | sed -e "s/^/\t/"

cat <<EOF
	chainloader ${EFIPATH}
}
EOF
;;
    linux)
	    KERNELPARAM=""
	    #linuxprobed detecta todos los  kernels de una partición.
	    LINUXPROBED="`linux-boot-prober ${DEVICE} 2> /dev/null | tr ' ' '^' | paste -s -d ' '`"
	    #esta opcion de linuxprobe solo interpreta el primer kernel detectado de la partición 
	    #Si queremos que autoincluya todos los kernels hay que comentar esta filtrado de LINUXPROBED
	    LINUXPROBED=$(echo $LINUXPROBED | awk '{ print $1}') 	
	    prepare_boot_cache=
	    #	echo "ADV listado de los kerenel encontrados linux-boot-prober ${DEVICE} $LINUXPROBED"
	    for LINUX in ${LINUXPROBED} ; do
		    LINUX=$LINUXPROBED
		    LROOT="`echo ${LINUX} | cut -d ':' -f 1`"
		    LBOOT="`echo ${LINUX} | cut -d ':' -f 2`"
		    LLABEL="`echo ${LINUX} | cut -d ':' -f 3 | tr '^' ' '`"
		    LKERNEL="`echo ${LINUX} | cut -d ':' -f 4`"
		    LINITRD="`echo ${LINUX} | cut -d ':' -f 5`"
		    LPARAMS="`echo ${LINUX} | cut -d ':' -f 6- | tr '^' ' '`"
		    # En los parámetros cambiamos el UUID por el valor de LROOT
		    UUID=$(blkid -s UUID -o value $LROOT)
		    LPARAMS="$(echo $LPARAMS | sed "s|UUID=$UUID|$LROOT|g")"
		    if [ -z "${LLABEL}" ] ; then
			    LLABEL="${LONGNAME}"
		    fi

		    if [ "${LROOT}" != "${LBOOT}" ]; then
			    LKERNEL="${LKERNEL#/boot}"
			    LINITRD="${LINITRD#/boot}"
		    fi

		    found_other_os=1
		    LABELCLASS=$(echo "${LLABEL}" | awk '{print tolower($1);}')
		    cat << EOF
menuentry "${LLABEL} (on ${DEVICE})" --class $LABELCLASS --class linux --class os {
EOF
save_default_entry | sed -e "s/^/\t/"
if [ -z "${prepare_boot_cache}" ]; then
	#ADV	    prepare_boot_cache="$(prepare_grub_to_access_device ${LBOOT} | sed -e "s/^/\t/")"
	prepare_boot_cache="$(OG_prepare_grub_to_access_device ${LBOOT} | sed -e "s/^/\t/")"
fi
printf '%s\n' "${prepare_boot_cache}"
if [ "$LABELCLASS" == "opengnsys" ]; then
	KERNELPARAM=$(cat /proc/cmdline)
fi
cat <<  EOF
	linux ${LKERNEL} ${LPARAMS} ${KERNELPARAM} 
EOF
if [ -n "${LINITRD}" ] ; then
	cat << EOF
	initrd ${LINITRD}
EOF
	fi
	cat << EOF
}
EOF
     done
     ;;
    macosx)
	    OSXUUID="`grub-probe --target=fs_uuid --device ${DEVICE} 2> /dev/null`"
	    osx_entry xnu_kernel 32
	    osx_entry xnu_kernel64 64
	    ;;
    hurd)
	    found_other_os=1
	    cat << EOF
menuentry "${LONGNAME} (on ${DEVICE})" --class hurd --class gnu --class os {
EOF
save_default_entry | sed -e "s/^/\t/"
prepare_grub_to_access_device ${DEVICE} | sed -e "s/^/\t/"
grub_device="`${grub_probe} --device ${DEVICE} --target=drive`"
mach_device="`echo "${grub_device}" | sed -e 's/(\(hd.*\),msdos\(.*\))/\1s\2/'`"
grub_fs="`${grub_probe} --device ${DEVICE} --target=fs`"
case "${grub_fs}" in
	*fs)	hurd_fs="${grub_fs}" ;;
	*)	hurd_fs="${grub_fs}fs" ;;
esac
cat << EOF
	multiboot /boot/gnumach.gz root=device:${mach_device}
	module /hurd/${hurd_fs}.static ${hurd_fs} --readonly \\
			--multiboot-command-line='\${kernel-command-line}' \\
			--host-priv-port='\${host-port}' \\
			--device-master-port='\${device-port}' \\
			--exec-server-task='\${exec-task}' -T typed '\${root}' \\
			'\$(task-create)' '\$(task-resume)'
	module /lib/ld.so.1 exec /hurd/exec '\$(exec-task=task-create)'
}
EOF
;;
    *)
	    echo "  ${LONGNAME} is not yet supported by grub-mkconfig." >&2
	    ;;
  esac
done

adjust_timeout

rm /opt/opengnsys/cache/etc/lsb-release &>/dev/null