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#!/bin/bash
VERBOSITY=0
PROPERTIES=( instance-id hostname user-data seedfrom )
DEFAULTS=( "i-ovfdemo00" "ovfdemo.localdomain" "" "" )
DEF_OUTPUT="ovftransport.iso"
TEMP_D=""
error() { echo "$@" 1>&2; }
fail() { [ $# -eq 0 ] || error "$@"; exit 1; }
# propvalue(name, value)
propvalue() {
local prop="" val="$2" i=0
for prop in "${PROPERTIES[@]}"; do
if [ "$prop" = "$1" ]; then
[ $# -eq 1 ] || DEFAULTS[$i]="$2"
_RET=${DEFAULTS[$i]}
return
fi
i=$(($i+1))
done
return
}
Usage() {
cat <<EOF
Usage: ${0##*/} ovf-env.xml.tmpl [user-data-file]
create an an ovf transport iso with ovf-env.xml.tmpl
as ovf-env.xml on the iso.
if user-data-file is given, the file's contents will be base64 encoded
and stuffed inside ovf-env.xml. This will override the '--user-data'
argument.
options:
-o | --output OUTPUT write output to OUTPUT [default: $DEF_OUTPUT]
-v | --verbose increase verbosity
EOF
local i=""
for i in "${PROPERTIES[@]}"; do
propvalue "$i"
printf "%10s--%-17s%s\n" "" "$i" "set $i. [default: '$_RET']"
done
cat <<EOF
Example:
$ ${0##*/} --hostname "foobar.mydomain" ovf-env.xml.tmpl user-data
EOF
}
bad_Usage() { Usage 1>&2; [ $# -eq 0 ] || error "$@"; exit 1; }
cleanup() {
[ -z "${TEMP_D}" -o ! -d "${TEMP_D}" ] || rm -Rf "${TEMP_D}"
}
debug() {
local level=${1}; shift;
[ "${level}" -ge "${VERBOSITY}" ] && return
error "${@}"
}
short_opts="ho:v"
long_opts="help,output:,verbose"
for i in "${PROPERTIES[@]}"; do
long_opts="$long_opts,$i:"
done
getopt_out=$(getopt --name "${0##*/}" \
--options "${short_opts}" --long "${long_opts}" -- "$@") &&
eval set -- "${getopt_out}" ||
bad_Usage
## <<insert default variables here>>
output="${DEF_OUTPUT}"
user_data=""
while [ $# -ne 0 ]; do
cur=${1}; next=${2};
case "$cur" in
-h|--help) Usage ; exit 0;;
-o|--output) output=${2}; shift;;
-v|--verbose) VERBOSITY=$((${VERBOSITY}+1));;
--) shift; break;;
--*)
for i in "${PROPERTIES[@]}" _none_; do
[ "${cur#--}" == "$i" ] || continue
[ "$i" != "user-data" ] ||
next=$(echo "$next" | base64 --wrap=0) ||
fail "failed to base64 encode userdata"
propvalue "$i" "$next"
break
done
[ "$i" = "_none_" ] && bad_Usage "confused by $cur"
;;
esac
shift;
done
[ $# -eq 1 -o $# -eq 2 ] ||
bad_Usage "wrong number of arguments"
env_tmpl="$1"
ud_file="$2"
[ -f "$env_tmpl" ] || bad_Usage "$env_tmpl: not a file"
[ -z "$ud_file" -o -f "$ud_file" ] ||
bad_Usage "$ud_file: not a file"
TEMP_D=$(mktemp -d "${TMPDIR:-/tmp}/${0##*/}.XXXXXX") ||
fail "failed to make tempdir"
trap cleanup EXIT
mkdir "$TEMP_D/iso" && iso_d="$TEMP_D/iso" ||
fail "failed to make a tempdir?"
ovf_env="$TEMP_D/iso/ovf-env.xml"
if [ -n "$ud_file" ]; then
user_data=$(base64 --wrap=0 "$ud_file") ||
fail "failed to base64 encode $ud_file. Do you have base64 installed?"
propvalue user-data "$user_data"
fi
changes=( )
for i in "${PROPERTIES[@]}"; do
changes[${#changes[@]}]="-e"
propvalue "$i"
changes[${#changes[@]}]="s|@@$i@@|$_RET|g"
done
sed "${changes[@]}" "$env_tmpl" > "$ovf_env" ||
fail "failed to replace string in $env_tmpl"
if [ "${#changes[@]}" -ne 0 ]; then
cmp "$ovf_env" "$env_tmpl" >/dev/null &&
fail "nothing replaced in $ovf_env. template is identical to output"
fi
debug 1 "creating iso with: genisoimage -o tmp.iso -r iso"
( cd "$TEMP_D" &&
genisoimage -V OVF-TRANSPORT -o tmp.iso -r iso 2>/dev/null ) ||
fail "failed to create iso. do you have genisoimage?"
if [ "$output" = "-" ]; then
cat "$TEMP_D/tmp.iso"
else
cp "$TEMP_D/tmp.iso" "$output" ||
fail "failed to write to $output"
fi
error "wrote iso to $output"
exit 0
# vi: ts=4 noexpandtab
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