#!/bin/bash

# -------------------------------------------------------------------------- #
# Copyright 2002-2012, OpenNebula Project Leads (OpenNebula.org)             #
#                                                                            #
# Licensed under the Apache License, Version 2.0 (the "License"); you may    #
# not use this file except in compliance with the License. You may obtain    #
# a copy of the License at                                                   #
#                                                                            #
# http://www.apache.org/licenses/LICENSE-2.0                                 #
#                                                                            #
# Unless required by applicable law or agreed to in writing, software        #
# distributed under the License is distributed on an "AS IS" BASIS,          #
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #
# See the License for the specific language governing permissions and        #
# limitations under the License.                                             #
#--------------------------------------------------------------------------- #

###############################################################################
# This script is used to copy a VM image (SRC) to the image repository as DST
# Several SRC types are supported
###############################################################################

# -------- Set up the environment to source common tools & conf ------------

if [ -z "${ONE_LOCATION}" ]; then
    LIB_LOCATION=/usr/lib/one
else
    LIB_LOCATION=$ONE_LOCATION/lib
fi

. $LIB_LOCATION/sh/scripts_common.sh

DRIVER_PATH=$(dirname $0)
source ${DRIVER_PATH}/../libfs.sh

# -------- Get cp and datastore arguments from OpenNebula core ------------

DRV_ACTION=$1
ID=$2

XPATH="${DRIVER_PATH}/../xpath.rb -b $DRV_ACTION"

unset i XPATH_ELEMENTS

while IFS= read -r -d '' element; do
    XPATH_ELEMENTS[i++]="$element"
done < <($XPATH     /DS_DRIVER_ACTION_DATA/DATASTORE/BASE_PATH \
                    /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/RESTRICTED_DIRS \
                    /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/SAFE_DIRS \
                    /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/UMASK \
                    /DS_DRIVER_ACTION_DATA/IMAGE/PATH)

BASE_PATH="${XPATH_ELEMENTS[0]}"
RESTRICTED_DIRS="${XPATH_ELEMENTS[1]}"
SAFE_DIRS="${XPATH_ELEMENTS[2]}"
UMASK="${XPATH_ELEMENTS[3]}"
SRC="${XPATH_ELEMENTS[4]}"

mkdir -p "$BASE_PATH"
set_up_datastore "$BASE_PATH" "$RESTRICTED_DIRS" "$SAFE_DIRS" "$UMASK"

DST=`generate_image_path`

# ------------ Copy the image to the repository -------------

case $SRC in
*)
    if [ `check_restricted $SRC` -eq 1 ]; then
        log_error "Not allowed to copy images from $RESTRICTED_DIRS"
        error_message "Not allowed to copy image file $SRC"
        exit -1
    fi

    log "Copying local disk folder $SRC to the image repository"

    exec_and_log "cp -rf $SRC $DST" "Error copying $SRC to $DST"

    if [ ! -f $DST/disk.vmdk ]; then
        BASE_DISK_FILE=`ls $DST | grep -v '.*-s[0-9]*\.vmdk'`

        exec_and_log "mv -f $DST/$BASE_DISK_FILE $DST/disk.vmdk" \
            "Error renaming disk file $BASE_DISK_FILE to disk.vmdk"
    fi
    ;;
esac

# ---------------- Get the size of the image ------------

SIZE=`fs_du $DST`

echo "$DST $SIZE"
