pingdome - Personal pingdom linux script/service

README.md

Pingdome

It is a simple script that checks if a website is up. If it's down, it notifies you via notify-send (linux UI notification system)

Prerequisites

• curl
• notify-send (Ubuntu: sudo apt-get install notify-osd | Arch pacman -S libnotify )

Installation

Simply copy all files to /opt/pingdome/

Usage

• $ pingdome yoursite.com: Checks if yoursite.com is up, if it isn't it displays a notification
• $ pingdomed yoursite.com: Does the pingdome check every 60 seconds
• $ pingdome-install yoursite.com: Creates a systemd service with the name pingdome_yoursite.com, then enables and starts it which in turn runs pingdomed yoursite.com
• $ pingdome-remove yoursite.com: Removes the created service

Notes

• The service will only work for the current user & if it has the UID 1000 (otherwise pingdome-setup has to be updated)

pingdome

#!/bin/bash -x

function checkDependency(){
  type $1
  if [[ "$?" != "0" ]]; then
    echo "Please make sure you have $1 installed"
    exit 1
  fi
}

function doVerification() {
  ADDRESS=$1

  if [[ "$ADDRESS" == "" ]]; then
    echo "Specify a website to check"
    exit 1
  fi

  function checkAddress() {
    curl -I $1 | grep -E "302|200|301"
  }

  checkAddress google.com
  GOOGLE_DOWN=$?

  checkAddress $ADDRESS
  WEBSITE_DOWN=$?

  if [[ "$GOOGLE_DOWN" != "$WEBSITE_DOWN" ]]; then
    notify-send "$ADDRESS is down"
  fi
}

checkDependency curl
checkDependency notify-send

doVerification $1

pingdome-remove

#!/bin/bash -xe

sudo systemctl stop pingdome_$1.service
sudo systemctl disable pingdome_$1.service

pingdome-setup

#!/bin/bash -xe
if [[ "$1" == "" ]]; then
  echo "Please specify a target address"
  exit 1
fi

ADDRESS=$1
SERVICE_NAME="pingdome_$ADDRESS"
SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

(
printf "\n" | cat | sudo tee /etc/systemd/system/$SERVICE_NAME.service <<- EndOfString
[Unit]
Description=Checks if $ADDRESS is up

[Service]
ExecStart=/usr/bin/su $USER -c "DISPLAY=:0 DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus $SCRIPT_DIR/pingdomed $ADDRESS"

[Install]
WantedBy=multi-user.target


EndOfString
)
sudo systemctl enable $SERVICE_NAME.service
sudo systemctl start $SERVICE_NAME.service

pingdomed

#!/bin/bash -x

SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

while [[ true ]]; do
  $SCRIPT_DIR/pingdome $1
  sleep 60
done