A short bash script to change settings in munki and notify a Slack channel.

changemunki-tellslackmanythings.sh

#!/bin/bash

# This script is designed to evaluate a current ManagedInstalls.plist file, then make changes to the specified key. The script will then log a success message to a Slack webhook.

MPL="/Library/Preferences/ManagedInstalls.plist"
DEFAULTS="/usr/bin/defaults"
PREFSTOCHECK=()
SHOULDBE=()
CHANGED=()
DIDSET=()
CHANNEL="#random"
SCUTIL="/usr/sbin/scutil"
SERIAL=( `system_profiler SPHardwareDataType | awk '/Serial/ {print $4}'` )

CLIENTIDENT=( `$SCUTIL --get LocalHostName` )

SLACKHOOK="https://hooks.slack.com/services/yourhookgoeshere"

PREFSTOCHECK[0]=SoftwareRepoURL
PREFSTOCHECK[1]=ClientIdentifier
PREFSTOCHECK[2]=InstallAppleSoftwareUpdates

SHOULDBE[0]=https://brookland.technolutionary.com/munki_repo
SHOULDBE[1]=$CLIENTIDENT
SHOULDBE[2]=1

echo "First up: Are you an admin user? Enter your password below:"

#Let's see if this works...
#This isn't bulletproof, but this is a basic test.

sudo whoami > /tmp/quickytest

if
	[[  `cat /tmp/quickytest` == "root" ]]; then
	echo "Privilege Escalation Allowed, Please Continue."
	else
	echo "Privilege Escalation Denied, User Cannot Sudo."
	exit 6 "You are not an admin user, you need to do this an admin user."
fi

echo "Checking your current Munki settings and see if they need changing."

tLen=${#PREFSTOCHECK[@]}

for (( i=0; i<tLen; i++));

	do
	echo $i
	
	CHECK=$( $DEFAULTS read $MPL ${PREFSTOCHECK[$i]} )
	echo $CHECK 
	
		if 
			[[ $CHECK == ${SHOULDBE[$i]} ]]; then
			echo "Hey, cool, the [$i] value is what it's supposed to be! You're all done here."

			else 
			echo "Okay, the current value of $CHECK doesn't match what we want it to be. Let's get that changed over to our desired value, ${SHOULDBE[$i]}."
			sudo $DEFAULTS write $MPL ${PREFSTOCHECK[$i]} ${SHOULDBE[$i]}
			CHANGED[$i]=${PREFSTOCHECK[$i]}
			DIDSET[$i]=${SHOULDBE[$i]}
		fi 


	done

echo ${#CHANGED[@]}
echo ${CHANGED[*]}

# We've made a change, now let's tell Slack."

IDENT=$( $DEFAULTS read $MPL ClientIdentifier )

read -d '' SLACK_PAYLOAD_DATA << EOF

{
    "channel": "$CHANNEL",
    "username": "MunkiBot",
    "icon_emoji": ":monkey_face:",
    "attachments": [
        {
            "fields": [
                {
                    "title": "Munki Client Update",
                    "value": "This is a client update from $IDENT (Serial Number $SERIAL). I have updated  ${#CHANGED[@]} settings successfully." ,
                    "short": false
                }
            ]
        }
    ]
}
EOF

SLACK_COMMAND="curl -X POST --data-urlencode 'payload=${SLACK_PAYLOAD_DATA}' ${SLACKHOOK}"

eval ${SLACK_COMMAND}

echo "All Set. I've reported this to $CHANNEL on your Slack."