#!/bin/sh

###################################################################################################
# Created by Mike Boylan, adapted from Crowdstrike script by David Larrea & Matt Wilson
# support@kandji.io | Kandji, Inc.
###################################################################################################
# Created - 01/20/2022
###################################################################################################
# Tested macOS Versions
###################################################################################################
#
#   12.1
#   12.0.1
#
###################################################################################################
# Software Information
###################################################################################################
#
# This Audit and Enforce script is used to ensure that a specific configuration
# profile is installed and ensure that the software is running after installation.
#
# Configuration profiles are linked to in the deployment instructions found in the
# Kandji Knowledge Base.
#
###################################################################################################
# License Information
###################################################################################################
# Copyright 2021 Kandji, Inc.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of this
# software and associated documentation files (the "Software"), to deal in the Software
# without restriction, including without limitation the rights to use, copy, modify, merge,
# publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
# to whom the Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all copies or
# substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
# INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
# PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
# FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
###################################################################################################

# Script version
VERSION="1.0"

###################################################################################################
###################################### VARIABLES ##################################################
###################################################################################################

# Change the PROFILE_PAYLOAD_ID_PREFIX variable to the profile prefix you want to wait on before
# running the installer. If the profile is not found, this audit and enforce script will exit 0
# and do nothing until the next Kandji agent check-in.

# These are the profile prefixes that contain all settings
PROFILE_PAYLOAD_ID_PREFIXES=("com.malwarebytes.tcc" "io.kandji.mwbnotifications")

# App info
APP_NAME="Malwarebytes"
APP_PATH="/Library/Application Support/Malwarebytes/Malwarebytes Endpoint Agent/EndpointAgentDaemon.app"
PROCESS_LABEL="com.malwarebytes.agent.daemon"

###################################################################################################
##################################### FUNCTIONS ###################################################
###################################################################################################

load_agent() {
    # Load Agent
    /bin/launchctl load "/Library/LaunchDaemons/$PROCESS_LABEL.plist"
}

check_agent() {
    pid=$(/bin/launchctl list | /usr/bin/grep $PROCESS_LABEL | /usr/bin/cut -f 1)
    echo $pid
}

###################################################################################################
##################################### MAIN LOGIC ##################################################
###################################################################################################

# All of the main logic be here ... modify at your own risk.

# Look for profiles
for prefix in "${PROFILE_PAYLOAD_ID_PREFIXES[@]}"; do
	matched_profiles=( $(/usr/bin/profiles show | /usr/bin/grep "$prefix" | /usr/bin/sed 's/.*\ //') )
	if [[ ${#matched_profiles[@]} -eq 0 ]]; then
		echo "At least one profile with prefix $prefix was not found ..."
	    echo "Waiting until all profiles are installed before proceeding ..."
	    echo "Will check again at the next Kandji agent check-in ..."
	    exit 0
	fi
done

# If we got here, then all the requires profiles are installed.
echo "All $APP_NAME profiles are installed ..."

# Now check to see if the app is installed
if [[ ! -e "$APP_PATH" ]]; then
    echo "$APP_NAME is not installed ..."
    echo "Starting the installation process ..."
    exit 1
fi

# Get the PID
process_id=""
loop_counter=0

# Loop until the pid is found or we have checked the status 5 times
while [[ -z "$process_id" ]] && [[ "$loop_counter" -lt 6 ]]; do

    # Get the PID
    process_id="$(check_agent)"

    # If no PID is returned, try to reload the process.
    if [[ -z "$process_id" ]]; then

        echo "Agent not running ..."
        echo "Attempting to reload ..."

        # Call the function
        $(load_agent)

        # Check for new pid
        new_pid=$(check_agent)

        # Check to see if the agent loaded successfully
        if [[ -n "$new_pid" ]]; then
            echo "Agent loaded successfully ..."

        else
            echo "Failed to load agent ..."
            echo "Will try again ..."

            /bin/sleep 3

            # Increment counter
            ((loop_counter++))

            if [[ "$loop_counter" -gt 5 ]]; then
                echo "Unable to load the agent successfully ..."
                echo "Reinstalling $APP_NAME"
                exit 1
            fi
        fi
    else
        # Agent is running
        echo "Agent ($process_id) is running ..."
    fi
done

# Everything checks out
echo "$APP_NAME appears to be running properly ..."
echo "Nothing to do ..."

exit 0