gitlab version checker & notifier

gitlab-checkandnotify

#!/bin/bash
#mail recipient
RCPT=someone@gmail.com

#args: $rcpt $subject $text
sendnotification() {
  echo -e "$3" | mail -s "$2" -t $1
}

echo -n "Checking version: "

RESULT=`gitlab-checkversion`
echo ${RESULT}

if [ "${RESULT}" == "up-to-date" ]
then
  echo -e "\e[32mOK\e[39m"
else
  sendnotification "$RCPT" "New version for Gitlab available: ${RESULT}" "New version for Gitlab available: ${RESULT}"
  exit 1
fi

gitlab-checkversion

#!/bin/bash

# Path to gitlab
GLPATH='/opt/gitlab/'

# Extract the version from the version-manifest
VERSION=`cat ${GLPATH}/version-manifest.txt | head -n 1 | grep -Po "[\d\.]*"`

# Create a Base64-encoded JSON string
VERSIONB64=`echo "{\"version\":\"$VERSION\"}" | base64`

# Request SVG
URL="https://version.gitlab.com/check.svg?gitlab_info=${VERSIONB64}"

# Extract content from SVG; we need a referrer otherwise we won't be served an image...
RESULT=`wget -q -O- --header="Referer: https://google.com" ${URL} | grep -oPm1 "(?<=\">)(.*)<\/text>" | grep -oP ".+?(?=<\/text>)"`

# Return result to stdout
echo ${RESULT}