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Smart Groups, Inventory and Application Version Numbers

Description

By default, FileWave treats software version numbers as strings.  This is because it is legitimate for software versions to contain characters as well as numbers.  The below script is designed to assist with Smart Group analysis and Inventory Reporting.

Information

The following script will attempt comparisons between a supplied software version and the version as shown from the bundle Info.plist file.  If the version contains characters though, the script will exit.

Output should be one of:

  • Newer - version on device is newer than supplied version to compare
  • Outdated - version on device is older than the supplied version to compare
  • Current - version is the same as the supplied version to compare
  • NA - Supplied Application path was not found on device
  • Uncomparable - Non numerical characters were found

The script accepts three Launch Arguments:

  1. App path
  2. Version to compare
  3. Key/Value item to collect from Info.plist

Item 3, if not supplied, defaults to: CFBundleShortVersionString

Directions

Create a Custom Field.

  • Name the script, e.g. Compare Chess Version
  • Provided By: Client Script
  • Data Type: String
  • Client Script Type: macOS Shell
  • Optional: Assign to all devices

Launch Arguments:

  1. /Applications/Chess.app
  2. 3.15
  3. CFBundleShortVersionString

Paste the following into the script window:

#!/bin/bash


# Compare version numbers of apps for Inventory Reporting and Smart Groups
# V1.0 -May 2019, sean.holden@filewave.com

# $1 - Application path, e.g: /Applications/Chess.app
# $2 - Version to compare against
# $3 - Version string, e.g.: CFBundleVersion, CFBundleShortVersionString
# Return Newer, Outdated, Current, NA or if non-numerical characters are used Uncomparable.

app_path="$1"

if [ ! -x "$app_path" ]
then
	echo NA
	exit 0
fi

dotted_check_version=$2

if [[ "$3" == "" ]]
then
	# Default if not supplied: CFBundleShortVersionString"
	version_string="CFBundleShortVersionString"
else
	version_string="$3"
fi

dotted_installed_version=$(defaults read "${app_path}/Contents/Info.plist" "$version_string" )

if [[ "$dotted_installed_version" =~ [A-Za-z] ]]
then
	echo "Uncomparable"
	exit 0
fi

function convertVersion {


	OLDIFS=$IFS
	IFS='.' read -r -a array_add <<< "$1"
	IFS=$OLDIFS
}

function compareVersion {


	array_counter=0

	while [ $# -gt 0 ]
	do
		compare_to_me=${check_version[$array_counter]}

		if [[ $compare_to_me == "" ]]
		then
			compare_to_me=0
		fi

		if [ $1 -lt $compare_to_me ]
		then
			echo "Outdated"
			break
		fi

		if [ $1 -gt $compare_to_me ]
		then
			echo "Newer"
			break
		fi

		array_counter=$((array_counter + 1))
		shift

		if [ $# -eq 0 ]
		then
			echo "Current"
		fi
	done
}

convertVersion "$dotted_installed_version"
declare -a installed_version=("${array_add[@]}")
convertVersion "$dotted_check_version"
declare -a check_version=("${array_add[@]}")

while [ ${#check_version[@]} -gt ${#installed_version[@]} ]
do
	installed_version+=('0')
done


compareVersion ${installed_version[@]}

exit 0

Save and then create a Smart Group as required.


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