emoncmsupdate

#!/bin/bash

echo
echo "================================="
echo "Emoncms update started"
echo "Emoncms update script V1.2.0"
echo

date

echo
#########################################################################################
echo "#############################################################"
echo
# Check emonSD base image is minimum required release date, else don't update
image_version=$(ls /boot | grep emonSD)
echo "emonSD version: $image_version"
echo

if [ "$image_version" == "emonSD-07Nov16" ] || [ "$image_version" == "emonSD-03May16" ] || [ $image_version == "emonSD-26Oct17" ] || [ $image_version == "emonSD-13Jun18" ]; then
  echo "emonSD base image check pass...continue update"
else
  echo "ERROR: emonSD base image old or undefined...update will not continue"
  echo "See latest verson: https://github.com/openenergymonitor/emonpi/wiki/emonSD-pre-built-SD-card-Download-&-Change-Log"
  echo "Stopping update"
  exit
fi
echo
echo "#############################################################"

uid=`id -u`
echo "EUID: $uid"

if [ "$uid" = "0" ] ; then
    # update is being ran mistakenly as root, need to remove all sudo crontab service runner entries
    echo "update running as root: remove sudo crontab service runner entries"
    crontab -l > mycron
    if grep -Fxq " * * * * * /home/pi/emonpi/service-runner >> /var/log/service-runner.log 2>&1" mycron ; then
        sed -i  "/\s\* \* \* \* \* \/home\/pi\/emonpi\/service-runner >> \/var\/log\/service-runner.log 2>&1/d" ./mycron
    fi
    if grep -Fxq "* * * * * /home/pi/emonpi/service-runner >> /var/log/service-runner.log 2>&1" mycron ; then
        sed -i  "/\* \* \* \* \* \/home\/pi\/emonpi\/service-runner >> \/var\/log\/service-runner.log 2>&1/d" ./mycron
    fi
    crontab mycron
    rm mycron
    echo "switching to Pi user & restarting script"
    echo
    echo "**MANUAL SYSTEM REBOOT REQUIRED**"
    echo
    echo "Please shutdown and reboot emonPi then run Update again"
    su -c $0 pi
    exit
fi

#########################################################################################

# Add backup module service-runner
echo "Checking cron tab for service runner entry..."
crontab -l > mycron
# Check crontab entry does not already exist, if not add new entry
if ! grep -Fxq "* * * * * /home/pi/emonpi/service-runner >> /var/log/service-runner.log 2>&1" mycron ; then
        echo "Add service runner cron entry"
        echo "* * * * * /home/pi/emonpi/service-runner >> /var/log/service-runner.log 2>&1" >> mycron
        crontab mycron
else
  echo "service runner crontab entry already installed"
fi
rm mycron

# Check if double service runner (with space) entry exits, if so remove it
crontab -l > mycron
if grep -Fxq " * * * * * /home/pi/emonpi/service-runner >> /var/log/service-runner.log 2>&1" mycron ; then
        echo "Remove duplicate service runner entry"
        sed -i  "/\s\* \* \* \* \* \/home\/pi\/emonpi\/service-runner >> \/var\/log\/service-runner.log 2>&1/d" ./mycron
        crontab mycron
fi
rm mycron

#########################################################################################

# Install sudoers entry to enable emoncms reboot button

if [ ! -f /etc/sudoers.d/emoncms-rebootbutton ]; then
    # double check correct sudo syntax
    sudo visudo -cf /home/pi/emonpi/emoncms-rebootbutton && \
    sudo cp /home/pi/emonpi/emoncms-rebootbutton /etc/sudoers.d/
    sudo chmod 0440 /etc/sudoers.d/emoncms-rebootbutton
    echo
    echo "Install emonPi Emoncms admin reboot button sudoers entry"
fi

#########################################################################################

# Install sudoers entry to enable toggling file-system RO/RW mount via Emoncms admin

if [ ! -f /etc/sudoers.d/emoncms-filesystem ]; then
    # double check correct sudo syntax
    sudo visudo -cf /home/pi/emonpi/emoncms-filesystem && \
    sudo cp /home/pi/emonpi/emoncms-filesystem /etc/sudoers.d/
    sudo chmod 0440 /etc/sudoers.d/emoncms-filesystem
    echo
    echo "emonPi Emoncms admin file-system toggle buttons sudoers entry installed"
fi

#########################################################################################

# Install sudoers entry to enable emonhub reboot button

if [ ! -f /etc/sudoers.d/emonhub-sudoers ]; then
    # double check correct sudo syntax
    sudo visudo -cf /home/pi/emonpi/emonhub-sudoers && \
    sudo cp /home/pi/emonpi/emonhub-sudoers /etc/sudoers.d/
    sudo chmod 0440 /etc/sudoers.d/emonhub-sudoers
    echo
    echo "emonhub service constol sudoers entry installed"
fi

#########################################################################################

# Install sudoers entry for WiFI AP

if [ ! -f /etc/sudoers.d/emoncms-setup-sudoers ]; then
    # double check correct sudo syntax
    sudo visudo -cf /home/pi/emonpi/emoncms-setup/emoncms-setup-sudoers && \
    sudo cp /home/pi/emonpi/emoncms-setup/emoncms-setup-sudoers /etc/sudoers.d/
    sudo chmod 0440 /etc/sudoers.d/emoncms-setup-sudoers
    echo
    echo "Emoncms setup module sudoers entry installed"
fi

#########################################################################################

# Setup user group to enable reading pi GPU temperature
#https://github.com/emoncms/emoncms/pull/869

sudo usermod -G video www-data


#########################################################################################
# Record current state of emoncms settings.php
echo
current_settings_md5="$(/home/pi/emonpi/./md5sum.py /var/www/emoncms/settings.php)"
echo "current settings.php md5: $current_settings_md5"

current_default_settings_md5="$(/home/pi/emonpi/md5sum.py /var/www/emoncms/default.emonpi.settings.php)"
echo "Default settings.php md5: $current_default_settings_md5"

#########################################################################################

# Pulling in latest Emoncms changes
echo
echo "git pull /var/www/emoncms"
cd /var/www/emoncms
git branch
git status
git pull

#########################################################################################
# check to see if user has modifed settings.php and if update is need. Auto apply of possible
echo
new_default_settings_md5="$(/home/pi/emonpi/md5sum.py /var/www/emoncms/default.emonpi.settings.php)"
echo "NEW default settings.php md5: $new_default_settings_md5"


if [ "$current_default_settings_md5" == "$current_settings_md5" ]; then
  echo "settings.php has NOT been user modifed"
  settings_unmodified=true
else
  echo "settings.php HAS been user modified"
  settings_unmodified=false
fi

# check to see if there is an update waiting for settings.php
if [ "$new_default_settings_md5" != "$current_default_settings_md5" ]; then
  echo "Update required to settings.php..."
  if [ $settings_unmodified == true ]; then
    sudo cp /var/www/emoncms/default.emonpi.settings.php /var/www/emoncms/settings.php
    echo "settings.php autoupdated"
  else
    echo "**ERROR: unable to autoupdate settings.php since user changes are present, manual review required**"
  fi
else
 echo "settings.php not updated"
fi
#########################################################################################

echo

if [ -d /var/www/emoncms/Modules/nodes ]; then
  echo "git pull /var/www/emoncms/Modules/nodes"
  cd /var/www/emoncms/Modules/nodes
  git status
  git branch
  git pull
fi

echo

echo "git pull /var/www/emoncms/Modules/app"
cd /var/www/emoncms/Modules/app
git branch
git status
git pull
git checkout stable

echo

echo "git pull /var/www/emoncms/Modules/config"
cd /var/www/emoncms/Modules/config
git branch
git status
git pull
git checkout stable

echo

echo "git pull /var/www/emoncms/Modules/wifi"
cd /var/www/emoncms/Modules/wifi
git branch
git status
git pull
git checkout stable

echo "git pull /var/www/emoncms/Modules/dashboard"
cd /var/www/emoncms/Modules/dashboard
git status
git pull
git checkout stable

echo

if [ -d /var/www/emoncms/Modules/graph ]; then
  echo "git pull /var/www/emoncms/Modules/graph"
  cd /var/www/emoncms/Modules/graph
  git branch
  git status
  git pull
  git checkout stable
else
  echo "Installing Emoncms graph module https://github.com/emoncms/graph"
  cd /var/www/emoncms/Modules
  git clone https://github.com/emoncms/graph
fi

echo

if [ -d /home/pi/postprocess ]; then
  echo "git pull /home/pi/postprocess"
  cd /home/pi/postprocess
  sudo chmod 777 .git -R
  git checkout emonpi
  git pull
  ln -sf /home/pi/postprocess/postprocess-module /var/www/emoncms/Modules/postprocess
else
  echo "git clone https://github.com/emoncms/postprocess"
  cd /home/pi
  git clone -b emonpi https://github.com/emoncms/postprocess
  cd /home/pi/postprocess
  git checkout emonpi
fi

if [ -d /home/pi/sync ]; then
  echo "git pull /home/pi/sync"
  cd /home/pi/sync
  git checkout master
  git pull
  ln -sf /home/pi/sync/sync-module /var/www/emoncms/Modules/sync
else
  echo "git clone https://github.com/emoncms/sync"
  cd /home/pi
  git clone https://github.com/emoncms/sync
  cd /home/pi/sync
  git checkout master
  ln -sf /home/pi/sync/sync-module /var/www/emoncms/Modules/sync
fi


if [ -d /home/pi/backup ]; then
  echo "git pull /home/pi/backup"
  cd /home/pi/backup
  git branch
  git status
  git pull
  git checkout stable
else
  echo "Installing Emoncms backup module from  https://github.com/emoncms/backup"
  cd /home/pi
  git clone https://github.com/emoncms/backup
  cd /home/pi/backup
  git checkout stable
  ln -s /home/pi/backup/backup/ /var/www/emoncms/Modules/backup
  echo "Restarting apache web-server"
  sudo service apache2 restart
fi

# Install emoncms-setup module (symlink from emonpi repo)
if [ -d /home/pi/emonpi/emoncms-setup ] && [ ! -d /var/www/emoncms/Modules/setup ]; then
  echo "Installing emoncms/emonPi setup module: symlink from ~/emonpi/emoncms-setup"
  ln -s /home/pi/emonpi/emoncms-setup /var/www/emoncms/Modules/setup
else
  if [ ! -d /home/pi/emonpi/emoncms-setup ]; then
    echo "Cannot find emoncms-setup module, please update ~/emonpi repo"
  fi
fi

echo

################################################################################################
if [ -d /etc/systemd ] && [ -f /var/www/emoncms/scripts/mqtt_input.service ]; then
    if [ -f /etc/init.d/mqtt_input ]; then
      echo "replacing initd mqtt_input with systemd mqtt input"
      sudo /etc/init.d/mqtt_input stop
      sudo rm /etc/init.d/mqtt_input
      sudo cp /var/www/emoncms/scripts/mqtt_input.service /etc/systemd/system/mqtt_input.service
      sudo systemctl daemon-reload
      sudo systemctl enable mqtt_input.service
      sudo systemctl start mqtt_input.service
    else
     echo "update mqtt_input systemd unit file"
     sudo cp /var/www/emoncms/scripts/mqtt_input.service /etc/systemd/system/mqtt_input.service
     sudo systemctl daemon-reload
    fi
fi

## Don't overwrite settings unless required (un comment if required)
# echo "Copy new default.emonpi.settings.php to settings.php & make backup old.emonpi.settings.php"
# sudo cp /var/www/emoncms/settings.php /var/www/emoncms/old.settings.php
# sudo cp /var/www/emoncms/default.emonpi.settings.php /var/www/emoncms/settings.php

echo

echo "Update Emoncms database"
php /home/pi/emonpi/emoncmsdbupdate.php

echo

echo "Restarting Services..."
sudo /etc/init.d/emonhub restart
sudo /etc/init.d/feedwriter restart

echo
if [ -f /etc/init.d/emoncms-nodes-service ]; then
  sudo /etc/init.d/emoncms-nodes-service restart
fi

echo
if [ -f /etc/init.d/openhab ]; then
  sudo /etc/init.d/openhab restart
fi

echo
if [ -f /etc/init.d/mqtt_input ]; then
  sudo /etc/init.d/mqtt_input start
  sleep 1
  sudo /etc/init.d/mqtt_input restart
else
  sudo systemctl restart mqtt_input.service
fi
echo
echo "set log rotate config owner to root"
sudo chown root:root /etc/logrotate.conf
echo "Restarting Services..."