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#!/bin/bash
#
# Installs Passenger.
# Author: Christoph Helma, Andreas Maunz.
#

if [ "$(id -u)" = "0" ]; then
  echo "This script must be run as non-root." 1>&2
  exit 1
fi

# Utils
PIN="`which passenger-install-nginx-module`"
if [ ! -e "$PIN" ]; then
  echo "'passenger-install-nginx-module' missing. Install 'passenger-install-nginx-module' first. Aborting..."
  exit 1
fi

source ./config.sh

echo "This installs Nginx."
echo "Press <Return> to continue, or <Ctrl+C> to abort."
read

DIR="`pwd`"

NGINX_DONE=false
mkdir "$NGINX_DEST" >/dev/null 2>&1
if [ ! -d "$NGINX_DEST" ]; then
  echo "Install directory '$NGINX_DEST' is not available! Aborting..."
  exit 1
else
  if ! rmdir "$NGINX_DEST" >/dev/null 2>&1; then # if not empty this will fail
    echo "Install directory '$NGINX_DEST' is not empty. Skipping kernlab installation..."
    NGINX_DONE=true
  fi
fi

if ! $NGINX_DONE; then
  $PIN --auto-download --auto --prefix="$NGINX_DEST"
  cd "$RUBY_DEST/lib/ruby/gems/1.8/gems/"
  passenger=`ls -d passenger*`;
  cd -
  servername=`hostname`
  sed -e "s/PASSENGER/$passenger/;s/SERVERNAME/$servername/;s/RUBY_DEST/$RUBY_DEST/" ./nginx.conf > $NGINX_DEST/nginx.conf
fi

cd "$DIR"
echo
echo "Nginx installation finished."