qbic-upgrade.sh

#!/bin/bash

RELEASEFILE="https://github.com/Znuff/qbic/releases/download/v1.1.1/qbicd-linux64-v1.1.1.tar.gz"

daemon="qbicd"
cli="qbic-cli"
stopcli="stop"

# environment setup, make it pretty
tred=$(tput setaf 1)
tgreen=$(tput setaf 2)
tyellow=$(tput setaf 3)
tblue=$(tput setaf 4)
tmagenta=$(tput setaf 5)
tcyan=$(tput setaf 6)
treset=$(tput sgr0)
tclear=$(tput clear)

# starting blank
echo $tclear

echo "------------------------------"
echo $tblue"Masternode Upgrade Script$treset"
echo "------------------------------"

# checking for current user id, we should be running as root
if (( $(id -u) != 0 )); then
  echo $tred"I need to be root to run this. Please run this with $(tput setab 7)sudo$treset$tred or log in directly as root.$treset"
  echo -e "\n"
  exit 1
fi

if (( $(lsb_release -s -i) != "Ubuntu")); then
  echo $tred"This doesn't seem to be Ubuntu. Distribution is unsuported."$treset
  echo "Please upgrade manually using: $tmagenta$RELEASEFILE$treset"
  exit 1
fi

# grabbing the details of the currently running daemon
BINPID=$(pidof $daemon)
if (( $BINPID )); then
echo "Found $tcyan$daemon$treset running with:"
  echo " * PID: $tyellow$BINPID$treset."
  BINPATH=$(readlink -f /proc/$BINPID/exe)
  echo " * Path: $tyellow$BINPATH$treset."
  BINUID=$(awk '/^Uid:/{print $2}' /proc/$BINPID/status)
  BINUSER=$(getent passwd $BINUID | awk -F: '{print $1}')
  echo " * Running as: $tyellow$BINUSER$treset."
  DISTRO=$(lsb_release -s -c)
  echo " * Running under: $tyellow$DISTRO$treset."
  echo "------------------------------"
else
  echo $tred"No $daemon found running. Exiting.$treset"
  exit 1
fi  

# stopping currently running daemon
BINDIR=$(dirname $BINPATH)
chmod +x $BINDIR/$cli
su - $BINUSER -c "$BINDIR/$cli $stopcli"

# just in case...
killall -9 $daemon 2> /dev/null

# deleting old binaries
rm -rf $BINDIR/{$cli,$daemon}
rm -ff $HOME/{$cli,$daemon}

# grabbing the new release
FILENAME=$(basename $RELEASEFILE)
echo "Downloading upgrade:"
curl -LJO -k $RELEASEFILE -o $FILENAME
echo -e "\n"

# unpacking in /usr/local/bin
tar -C /usr/local/bin/ -xzf $FILENAME
# making sure the files have the correct permission, maybe someone cross-compiled and moved to a non-posix filesystem
chmod +x /usr/local/bin/{$daemon,$cli}

# we should be done, let's check if we're running on a systemd compatible distro (only xenial tested!)
if [[ $DISTRO == "xenial" ]]; then
  echo "Installing a systemd service file to keep our daemon running & auto-restarting."
  
cat <<- EOF > /lib/systemd/system/$daemon.service
[Unit]
Description=$daemon's masternode daemon
After=network.target

[Service]
User=$BINUSER
Group=$BINUSER

Type=forking
ExecStart=/usr/local/bin/$daemon -daemon -disablewallet
ExecStop=/usr/local/bin/$cli $stopcli
Restart=always
TimeoutStopSec=60s
TimeoutStartSec=30s
StartLimitInterval=120s
StartLimitBurst=5

[Install]
WantedBy=multi-user.target
EOF

  systemctl daemon-reload
  systemctl enable $daemon
  systemctl start $daemon
  echo -e "\n"
  echo "From now on, $tcyan$daemon$treset will always start on boot automatically. It will also be restarted automatically in case of failure."
  echo "To manually stop/start $tcyan$daemon$treset, please use:"
  echo " Start:$tyellow systemctl start $daemon$treset."
  echo " Stop:$tyellow systemctl stop $daemon$treset."
  echo -e "\n"
else
  echo "You are running Ubuntu $DISTRO. We will set up a task to start $tcyan$daemon$treset on boot."
  crontab -l -u $BINUSER | { cat; echo "@reboot /usr/local/bin/$daemon -reindex" ;} | crontab -u $BINUSER -
  /usr/local/bin/$daemon -reindex
  echo -e "\n"
fi

rm -rf $daemon*
echo "Please keep in mind that $tcyan$daemon$treset and $tcyan$cli$treset have been moved to /usr/local/bin"
echo "As a consequence, now you can just type $tcyan$daemon$treset instead of $tcyan./$daemon$treset (same for $tcyan$cli$treset)"
echo -e "\n"
echo "Upgrade procedure$tgreen COMPLETE$treset. Happy masternode-ing."
echo -e "\n"