legacy/libisoburn/trunk/releng/releng_isojigdo

#!/bin/bash

# Copyright 2011 Thomas Schmitt <scdbackup@gmx.net>
# Copyright 2011 George Danchev <danchev@spnet.net>
# Licensed under GNU GPL version 2, ../COPYING

set -e

. inc/releng_getopts.inc

if [ ! -x $RELENG_XORRISO ]; then
 print_help
 printf "\n${SELF}: -x  absolute or relative path to binary to be run.\n\n"
 exit 30
fi

# check data dir, if any and after checking -x xorriso
if [ -d "${GEN_DATA_DIR}" ]; then
 printf "\n${SELF}: directory %s exists!" ${GEN_DATA_DIR}
 printf "\n${SELF}: use '${SELF} -c1' to remove.\n"
 exit 1
else
 mkdir "${GEN_DATA_DIR}"
fi

TMP_DATA_DIR=releng_generated_data
IMG_EXTRACT_DIR=${GEN_DATA_DIR}/${SELF}_extracted_tree
RELENG_DIR="${IMG_EXTRACT_DIR}"
RELENG_ISOLINUX_BIN="isolinux/isolinux.bin"
RELENG_BOOT_CAT="isolinux/boot.cat"
RELENG_IMG=t1
RES=""
REMOTE_URL="http://cdimage.debian.org/cdimage/daily-builds/daily/current/i386/iso-cd"
REMOTE_IMG="debian-testing-i386-businesscard.iso"

# check for required items
if [ "${RELENG_XORRISO}" == "" -o "${RELENG_DIR}" == "" -o "${RELENG_IMG}" == "" ]; then
 echo -e "\n${SELF}: xorriso_cmd IN_dir and OUT_image are required\n"
 exit 2
fi

# All must be set at this point
printf "${SELF}: Config items:"
printf "\n\txorriso_cmd=${RELENG_XORRISO}\n\tIN_dir=${RELENG_DIR}\n\tOUT_image=${RELENG_IMG}.iso"
printf "\n\tIN_isolinux=${RELENG_ISOLINUX_BIN}\n\tOUT_bootcat=${RELENG_BOOT_CAT}\n"
RES="${RELENG_IMG}.iso ${RELENG_IMG}.new ${RELENG_IMG}.md5 ${RELENG_IMG}.jigdo ${RELENG_IMG}.template"

# xorriso version details, incl. underlying libraries
# "${RELENG_XORRISO}" -version

# check whether the binary support JTE
set +e
RETSTR_VER_JTE=`"${RELENG_XORRISO}" --version 2>/dev/null | grep -P "(libjte\s+in\s+use)"`
RETCODE_VER_JTE="$?"
set -e
case ${RETCODE_VER_JTE} in
     0)
       printf "\n${SELF}: Found JTE support with ${RELENG_XORRISO} : ${RETSTR_VER_JTE}"
       ;;
     *)
       printf "\n${SELF}: FAIL: Not found JTE support in ${RELENG_XORRISO}. Quit."
       printf "\n${SELF}: JTE not supported with this xorriso build. Install jigit >=1.18 and rebuild."
       printf "\n${SELF}: http://www.einval.com/~steve/software/JTE/\n"
       cleanup
       exit 4
       ;;
esac

# grab remote ISO image, to decompose
if [ ! -f "${TMP_DATA_DIR}"/"${REMOTE_IMG}" ]; then
 printf "\n${SELF}: Downloading ${REMOTE_URL}/${REMOTE_IMG}\n"
 wget --no-check-certificate -T20 -t3 -O \
 "${TMP_DATA_DIR}"/"${REMOTE_IMG}" "${REMOTE_URL}"/"${REMOTE_IMG}"
 WGET_RET="$?"
 case ${WGET_RET} in
     0)
      echo -e "\n${SELF}: Downloading successfully completed.\n"
     ;;
     *)
      echo -e "\n${SELF}: FAIL: wget returned code: $WGET_RET\n"
      cleanup
      exit 5
     ;;
 esac
else
 printf "\n${SELF}: Found ISO image: ${TMP_DATA_DIR}/${REMOTE_IMG}\n"
fi

# check for extraction directory existence
if [ -d "${IMG_EXTRACT_DIR}" ]; then
 printf "\n${SELF}: Found ${IMG_EXTRACT_DIR}. Please cleanup.\n"
 cleanup
 exit 6
else
 mkdir "${IMG_EXTRACT_DIR}"
fi

# extract image content
CMD_EXTRACT="${RELENG_XORRISO} -indev ${TMP_DATA_DIR}/${REMOTE_IMG} \
        -osirrox on:auto_chmod_on \
	-extract / ${IMG_EXTRACT_DIR} \
"

# TODO: drop set +e|-e block, catch exit code instead when 
#       the boot catalog warnings get completely resolved.
echo -e "${SELF}: Extracting ISO image:\n${CMD_EXTRACT}\n"
set +e
${CMD_EXTRACT}
set -e

# grab an MBR
ISOHYBRID_MBR="${GEN_DATA_DIR}/isohybrid.mbr"
dd if="${TMP_DATA_DIR}/${REMOTE_IMG}" bs=1K count=32 of="${ISOHYBRID_MBR}"

# create FAT partition
APPEND_PART="${GEN_DATA_DIR}/fatpart.fat"
MKFS_MSDOS="/sbin/mkfs.msdos"
if [ -x "${MKFS_MSDOS}" ]; then
 "${MKFS_MSDOS}" -n Bla -C "${APPEND_PART}" 8192
else
 printf "\n${SELF}: Not found: "${MKFS_MSDOS}". Install dosfstools."
 printf "\n${SELF}: http://www.daniel-baumann.ch/software/dosfstools/\n"
 cleanup
 exit 7
fi

# GENERAL section
CMD="${RELENG_XORRISO} \
 -as mkisofs \
 -quiet \
 -o ${GEN_DATA_DIR}/${RELENG_IMG}.iso \
 -R \
 -V ISOJIGDO \
 -partition_offset 16 \
 -J -joliet-long \
"

# BOOT section
if [ -f "${IMG_EXTRACT_DIR}"/"${RELENG_ISOLINUX_BIN}" -a -f "${ISOHYBRID_MBR}" -a -f "${APPEND_PART}" ]; then
CMD+="\
 -b ${RELENG_ISOLINUX_BIN} \
 -c ${RELENG_BOOT_CAT} \
 -no-emul-boot -boot-load-size 4 -boot-info-table \
 -isohybrid-mbr ${ISOHYBRID_MBR} \
 -partition_offset 16 \
 -append_partition 2 0x01 ${APPEND_PART} \
"
else
 printf "\n${SELF}: FAIL to compose the boot section.\n"
 cleanup
 exit 8
fi

# JIGDO section
JIGDO_JIGDO=${GEN_DATA_DIR}/${RELENG_IMG}.jigdo
JIGDO_TEMPLATE=${GEN_DATA_DIR}/${RELENG_IMG}.template
JIGDO_MAP_RHV=`readlink -e ${RELENG_DIR}`
JIGDO_MAP="Debian=${JIGDO_MAP_RHV}/"

# create jigdo MD5 list in base64 format
JIGDO_GEN_MD5=${GEN_DATA_DIR}/${RELENG_IMG}.md5
if which jigdo-gen-md5-list >/dev/null 2>&1; then
 printf "${SELF}: Creating MD5 list in hex format in ${JIGDO_GEN_MD5}..."
 jigdo-gen-md5-list ${RELENG_DIR} > ${JIGDO_GEN_MD5}
 printf "Done.\n"
else
 printf "\n${SELF}: Not found: jigdo-gen-md5-list. Install jigit >= 1.18."
 printf "\n${SELF}: http://www.einval.com/~steve/software/JTE/\n"
 cleanup
 exit 9
fi

CMD+="\
 -jigdo-template-compress gzip \
 -checksum_algorithm_iso md5,sha1,sha256,sha512 \
 -checksum_algorithm_template md5,sha1,sha256,sha512 \
 -jigdo-jigdo ${JIGDO_JIGDO} \
 -jigdo-template ${JIGDO_TEMPLATE} \
 -jigdo-map ${JIGDO_MAP} \
 -md5-list ${JIGDO_GEN_MD5} \
 -jigdo-min-file-size 1024 \
"

CMD+="${RELENG_DIR}"

# Run the whole compound command
echo -e "${SELF}: Creating ISO and jigdo representations:\n$CMD\n"
${CMD}

# Create another imange this time from jigdo files
if which jigit-mkimage >/dev/null 2>&1; then
 printf "${SELF}: Creating new ISO from jigdo files..."
 jigit-mkimage \
  -t ${JIGDO_TEMPLATE} \
  -j ${JIGDO_JIGDO} \
  -m ${JIGDO_MAP} \
  -o ${GEN_DATA_DIR}/${RELENG_IMG}.new
 printf "Done.\n"
else
 printf "\n${SELF}: Not found: jigit-mkimage. Install jigit."
 printf "\n${SELF}: http://www.einval.com/~steve/software/JTE/\n"
 cleanup
 exit 10
fi

# trap the exit code of diff and let the Universe explode
diff ${GEN_DATA_DIR}/${RELENG_IMG}.iso ${GEN_DATA_DIR}/${RELENG_IMG}.new
DIFF_RET="$?"
case ${DIFF_RET} in
     0)
      echo -e "${SELF}: Match: diff ${GEN_DATA_DIR}/${RELENG_IMG}.iso ${GEN_DATA_DIR}/${RELENG_IMG}.new"
     ;;
     *)
      echo -e "${SELF}: FAIL: diff returned code: $DIFF_RET\n"
     ;;
esac

# sort out the cruft
cleanup

# warn about downloaded image left behind
if [ -f "${TMP_DATA_DIR}"/"${REMOTE_IMG}" ]; then
 printf "${SELF}: Leaving "
 ls -sh "${TMP_DATA_DIR}"/"${REMOTE_IMG}"
fi

# last hints
printf "\n${SELF}: HINT: manual checks remained to be done:\n"
printf " * ${GEN_DATA_DIR}/${RELENG_IMG}.iso boots from USB stick and/or optical media.\n"
printf " * appended FAT partition is mountable.\n"
printf " * xorriso -indev ${GEN_DATA_DIR}/${RELENG_IMG}.iso -pvd_info\n"
printf " * fdisk -lu ${GEN_DATA_DIR}/${RELENG_IMG}.iso\n"

exit 0