#!/bin/sh
#-
# Copyright (c) 2010 iXsystems, Inc.  All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$

# Functions which check and load any optional modules specified in the config

. ${BACKEND}/functions.sh
. ${BACKEND}/functions-parse.sh

copy_component()
{
  COMPONENT="$1"
  FAILED="0"
  CFILES=""

  # Check the type, and set the components subdir properly
  TYPE="`grep 'type:' ${COMPDIR}/${COMPONENT}/component.cfg | cut -d ' ' -f 2`"
  if [ "${TYPE}" = "PBI" ]
  then
    SUBDIR="PBI"
  else
    SUBDIR="components"
  fi

  # Lets start by downloading / copying the files this component needs
  while read line
  do
    CFILE="`echo $line | cut -d ':' -f 1`"
    CFILEMD5="`echo $line | cut -d ':' -f 2`"
    CFILE2MD5="`echo $line | cut -d ':' -f 3`"

    case ${INSTALLMEDIUM} in
      dvd|usb)
        # On both dvd / usb, we can just copy the file
        cp ${CDMNT}/${COMPFILEDIR}/${SUBDIR}/${CFILE} \
		  ${FSMNT}/${COMPTMPDIR} >>${LOGOUT} 2>>${LOGOUT}
	    RESULT="$?"
        ;;

      ftp)
        get_value_from_cfg ftpPath
        if [ -z "$VAL" ]
        then
          exit_err "ERROR: Install medium was set to ftp, but no ftpPath was provided!"
        fi
        FTPPATH="${VAL}" 

        fetch_file "${FTPPATH}/${COMPFILEDIR}/${SUBDIR}/${CFILE}" "${FSMNT}/${COMPTMPDIR}/${CFILE}" "0"
        RESULT="$?"
       ;;
    local)
        get_value_from_cfg localPath
        if [ -z "$VAL" ]; then
          exit_err "Install medium was set to local, but no localPath was provided!"
        fi
        LOCALPATH=$VAL
        cp ${LOCALPATH}/${COMPFILEDIR}/${SUBDIR}/${CFILE} \
		  ${FSMNT}/${COMPTMPDIR} >>${LOGOUT} 2>>${LOGOUT}
	RESULT="$?"
       ;;
    esac

    if [ "${RESULT}" != "0" ]
    then
      echo_log "WARNING: Failed to copy ${CFILE}"
      FAILED="1"
    else
      # Now lets check the MD5 to confirm the file is valid
      CHECKMD5=`md5 -q ${FSMNT}/${COMPTMPDIR}/${CFILE}`
      if [ "${CHECKMD5}" != "${CFILEMD5}" -a "${CHECKMD5}" != "${CFILE2MD5}" ]
      then
        echo_log "WARNING: ${CFILE} failed md5 checksum"
        FAILED="1"
      else
        if [ -z "${CFILES}" ]
        then
          CFILES="${CFILE}" 
        else
          CFILES="${CFILES},${CFILE}"
        fi
      fi
    fi


  done < ${COMPDIR}/${COMPONENT}/distfiles
      
  if [ "${FAILED}" = "0" ]
  then
    # Now install the component
    run_component_install ${COMPONENT} ${CFILES}
  fi

};

run_component_install()
{
  COMPONENT="$1"
  CFILES="$1"

  # Lets install this component now 
  # Start by making a wrapper script which sets the variables
  # for the component to use
  echo "#!/bin/sh
COMPTMPDIR=\"${COMPTMPDIR}\"
export COMPTMPDIR
CFILE=\"${CFILE}\"
export CFILE
mount -t devfs devfs /dev

sh ${COMPTMPDIR}/install.sh

umount /dev
" >${FSMNT}/.componentwrapper.sh
  chmod 755 ${FSMNT}/.componentwrapper.sh
   
  # Copy over the install script for this component
  cp ${COMPDIR}/${COMPONENT}/install.sh ${FSMNT}/${COMPTMPDIR}/

  echo_log "INSTALL COMPONENT: ${i}"
  chroot ${FSMNT} /.componentwrapper.sh >>${LOGOUT} 2>>${LOGOUT}
  rm ${FSMNT}/.componentwrapper.sh

};

# Check for any modules specified, and begin loading them
install_components()
{
  # First, lets check and see if we even have any optional modules
  get_value_from_cfg installComponents
  if [ -n "${VAL}" ]
  then
    # Lets start by cleaning up the string and getting it ready to parse
    strip_white_space ${VAL}
    COMPONENTS=`echo ${VAL} | sed -e "s|,| |g"`
    for i in $COMPONENTS
    do
      if [ ! -e "${COMPDIR}/${i}/install.sh" -o ! -e "${COMPDIR}/${i}/distfiles" ]
      then
        echo_log "WARNING: Component ${i} doesn't seem to exist"
      else

        # Make the tmpdir on the disk
        mkdir -p ${FSMNT}/${COMPTMPDIR} >>${LOGOUT} 2>>${LOGOUT}

        # Start by grabbing the component files
        copy_component ${i}

        # Remove the tmpdir now
        rm -rf ${FSMNT}/${COMPTMPDIR} >>${LOGOUT} 2>>${LOGOUT}
      fi
    done
  fi

};