MSUpdate - manually update your Microsoft apps on macOS

msupdate.sh

#!/bin/bash
# author: janlay@gmail.com

set -e

SERVICE_URL="https://officecdn.microsoft.com/pr/C1297A47-86C4-4C1F-97FA-950631F94777/MacAutoupdate"
USER_AGENT='Microsoft%20AU%20Daemon/4.13.19071800 CFNetwork/1098 Darwin/19.0.0 (x86_64)'

MS_APPS=(
    "Microsoft AutoUpdate:0409MSau04"
    "Microsoft Edge Canary:0409EDCN01"
    "Microsoft Edge Dev:0409EDDV01"
    "Microsoft Edge Beta:0409EDBT01"
    "Microsoft Word:0409MSWD2019"
    "Microsoft Excel:0409XCEL2019"
    "Microsoft PowerPoint:0409PPT32019"
)

function read_xml {
    grep "<key>$1</key>" -A1 | tail -n1 | cut -d'>' -f2 | cut -d'<' -f1
}

function update {
    echo -n "Fetching URL... "
    local url="$(curl -fsSL "$SERVICE_URL/$2.xml" | read_xml 'Location')"
    [ -z "$url" ] && return 1

    echo -e "Done\nDownloading package..."
    local return_code=0
    RESULT="$(curl -#fLOw 'HTTP code is %{http_code}' -C - "$url")" || return_code=$?

    if [ $return_code -gt 0 ]; then
    	if [ "${RESULT:(-3)}" = '416' ]; then
    	    echo "Already downloaded. This download is treated as successful."
    	else
     		return 0
    	fi
    fi

    local restart_app=0
    if pgrep "$1" > /dev/null; then
    	restart_app=1
    	echo "$1 is running and will be restarted after installing update."
    	osascript -e "tell app \"$APP_PATH\" to quit"    	
    fi

    echo -n "Installing... "
    local new_app_path="$(sudo installer -store -package "$(basename "$url")" -target / | grep 'will be installed to' | cut -d' ' -f8-)"
    echo "Done"

    if [[ -n "$new_app_path" && "$new_app_path" != "$APP_PATH" ]]; then
        echo "$1 just installed in different location ($new_app_path) and will be moved to the original directory ($(dirname "$APP_PATH")/)."
        sudo mv "$APP_PATH" "$APP_PATH.bak"
        sudo mv "$new_app_path" "$APP_PATH"
        sudo rm -rf "$APP_PATH.bak"
    fi

    [ $restart_app -eq 0 ] || open -a "$1"
}

function check_version {
    local xml="$(curl -fsSL -H "User-Agent: $USER_AGENT" "$SERVICE_URL/$2-chk.xml")"
    local release_date="$(echo "$xml" | read_xml 'Date')"
    local new_version="$(echo "$xml" | read_xml 'Update Version')"
    local old_version="$(/usr/libexec/PlistBuddy -c 'Print :CFBundleVersion' "$APP_PATH/Contents/Info.plist")"
    verlt $old_version $new_version || return 1
    echo "New version $new_version released at $release_date"
    return 0
}

# Compares versions. See https://stackoverflow.com/a/4024263
function verlte {
    [  "$1" = "`echo -e "$1\n$2" | sort -V | head -n1`" ]
}

function verlt {
    [ "$1" = "$2" ] && return 1 || verlte $1 $2
}

function main {
    local working_dir="$TMPDIR"msupdate
    mkdir -p "$working_dir"
    cd "$working_dir"

    echo MSUpdate is working in $(pwd).
    [ "$1" = '-force' ] && echo 'All apps will be forced to install.'

    for app in "${MS_APPS[@]}"; do
        local app_name="${app%%:*}"
        local app_code="${app##*:}"

        echo -n "$app_name... "
        APP_PATH="$(mdfind "kMDItemFSName == '$app_name.app' && kMDItemKind == 'Application'" | head -n1)"
        if [ -z "$APP_PATH" ]; then
            echo 'Not installed'
            [ "$1" = '-force' ] || continue
        fi

        if ! check_version "$app_name" "$app_code"; then
            echo 'Up to date'
            [ "$1" = '-force' ] || continue
        fi

        update "$app_name" "$app_code"
    done

    cd - > /dev/null

    # Cleaning up...
    rm -rf "$working_dir"
}

main "$@"