#!/bin/bash

if [ "${EUID}" -ne 0 ]; then
  echo "You must be root to run this installer."
  exit
fi

# check for Ubuntu 20.04
if ! grep -q "Ubuntu 20.04" /etc/issue; then
  echo "This installer is only tested on Ubuntu 20.04. If you are on a"
  echo "different version of Ubuntu or a Debian/Debian based distro"
  echo "and want to try running this installer open this script and"
  echo "comment out the exit command below this line and re-run."
  exit
fi

# check if install is already in place
if [ -f "/usr/local/bin/vhost.sh" ]; then
  echo "vhost-stack is already installed, bailing out."
  exit
fi

# check for existing web server software installs
if [ -d "/etc/apache2/" ] || [ -d "/etc/php/" ] || [ -d "/etc/varnish/" ]; then
  echo
  echo "WARNING: Apache, Varnish and/or PHP are already installed."
  echo "This installer will overwrite existing configurations."
  echo -e "You have five seconds to execute ctrl-c to cancel this install.\a"
  echo
  sleep 5
fi

apt-get update

# install pwgen, used to create random passwords
apt -y install pwgen

# install mariadb (mysql)
if [ ! -d "/etc/mysql/" ]; then

  MARIADBPWORD=`pwgen 12 1`
  apt -y install mariadb-client mariadb-server
  # record the initial root password
  echo "#[client]" > /root/.my.cnf
  echo "#password=$MARIADBPWORD" >> /root/.my.cnf
  echo '!include /etc/mysql/debian.cnf' >> /root/.my.cnf
  chmod 600 /root/.my.cnf
  mysql -e "SET PASSWORD FOR 'root'@'localhost' = PASSWORD('$MARIADBPWORD');"
  sed -i "s|password = |password = $MARIADBPWORD|g" /etc/mysql/debian.cnf
  mysql -e "CREATE USER 'nagios'@'localhost' IDENTIFIED WITH mysql_native_password AS '';"
  mysqladmin flush-privileges

fi

# Apache w/ PHP
apt -y install apache2 libapache2-mod-authnz-pam libwww-perl php-fpm php-cli php-ssh2 php-curl php-dev php-enchant php-mysql php-pear php-gd php-http php-imap php-intl php-mysql php-yaml php-propro php-pspell php-raphf php-ssh2 php-sqlite3 php-tidy php-xml php-xmlrpc php-zip php-mbstring php-imagick php-redis redis pwauth libapache2-mod-authnz-external
## http2 handled automatically now. double check. also look in to vhost log format
# force https for phpMyAdmin ??
cp etc/apache2/conf-available/* /etc/apache2/conf-available/
chmod 644 /etc/apache2/conf-available/*.conf
chown root:root /etc/apache2/conf-available/*.conf
a2enconf php7.4-fpm phpMyAdmin
cp etc/apache2/mods-available/* /etc/apache2/mods-available/
chmod 644 /etc/apache2/mods-available/*.conf
chown root:root /etc/apache2/mods-available/*.conf
# set vhost subodmain to domain name of server, users may want to consider changing this to a custom domain.
vhostdomain=`hostname -d`
sed -i "s|.example.com|.$vhostdomain|g" /etc/apache2/mods-available/macro.conf
# a2enmod proxy_fcgi rewrite headers expires ssl http2 remoteip macro
a2enmod cgid proxy_fcgi proxy_http rewrite headers expires ssl http2 macro
# # sed -i "s|CustomLog|#CustomLog|g"  /etc/apache2/sites-available/000-default.conf
sed -i "s|/var/www/html|/srv/www/html|g"  /etc/apache2/sites-available/000-default.conf
# # sed -i "s|CustomLog|#CustomLog|g"  /etc/apache2/sites-available/default-ssl.conf
sed -i "s|/var/www/html|/srv/www/html|g"  /etc/apache2/sites-available/default-ssl.conf
## double check this next one after getting full setup going w/ haproxy & varnish
sed -i "s|%h %l %u|%a %l %u|g" /etc/apache2/apache2.conf
sed -i "s|other_vhosts_access.log|access.log|" /etc/apache2/conf-available/other-vhosts-access-log.conf
rm /var/log/apache2/other_vhosts_access.log
# configure security
echo '<Directory "/srv/www/">' >> /etc/apache2/conf-available/security.conf
echo '  AllowOverride All' >> /etc/apache2/conf-available/security.conf
echo '  Options Includes FollowSymLinks' >> /etc/apache2/conf-available/security.conf
echo '  Require all granted' >> /etc/apache2/conf-available/security.conf
echo '</Directory>' >> /etc/apache2/conf-available/security.conf
echo '<Directory "/srv/www/*/cgi-bin">' >> /etc/apache2/conf-available/security.conf
echo '  AllowOverride None' >> /etc/apache2/conf-available/security.conf
echo '  Options none' >> /etc/apache2/conf-available/security.conf
echo '  Require all granted' >> /etc/apache2/conf-available/security.conf
echo '</Directory>' >> /etc/apache2/conf-available/security.conf

# configure php
sed -i "s|post_max_size = 8M|post_max_size = 256M|g" /etc/php/7.4/fpm/php.ini
sed -i "s|upload_max_filesize = 2M|upload_max_filesize = 256M|g" /etc/php/7.4/fpm/php.ini
sed -i "s|;date.timezone =|date.timezone = 'America/Los_Angeles'|g" /etc/php/7.4/fpm/php.ini
sed -i "s|;date.timezone =|date.timezone = 'America/Los_Angeles'|g" /etc/php/7.4/cli/php.ini
# Change Debian/Ubuntu session settings back to php defaults for compatability with user jails & php chroots
sed -i "s|;session.save_path = \"/var/lib/php/sessions\"|session.save_path = \"/tmp\"|g" /etc/php/7.4/fpm/php.ini
sed -i "s|;session.save_path = \"/var/lib/php/sessions\"|session.save_path = \"/tmp\"|g" /etc/php/7.4/cli/php.ini
sed -i "s|session.gc_probability = 0|session.gc_probability = 1|g" /etc/php/7.4/fpm/php.ini
sed -i "s|session.gc_probability = 0|session.gc_probability = 1|g" /etc/php/7.4/cli/php.ini
# Configure PHP-FPM to use "ondemand"
sed -i "s|pm = dynamic|pm = ondemand|g" /etc/php/7.4/fpm/pool.d/www.conf
systemctl reload apache2
##   configure overrides
#   sed -i "s|^user = www-data|user = $USERNAME|g" /etc/php/7.2/fpm/pool.d/www.conf
#   sed -i "s|^group = www-data|group = $USERNAME|g" /etc/php/7.2/fpm/pool.d/www.conf
systemctl reload php7.4-fpm

if [ -d /srv/www ]; then
  if [ -d /var/www ]; then
    echo "WARNING: /srv/www & /var/www dirs both exists, skipping move of existing /var/www/ dir."
  fi
else
  if [ -d /var/www ]; then
    mv /var/www /srv/www
  else
    install --owner=root --group=root --mode=755 --directory /srv/www
  fi
  ln -s /srv/www /var/www
fi

useradd --no-create-home --home-dir /srv/www --shell /usr/sbin/nologin --system --user-group vhost

if [ -d /srv/www/html ]; then
  chown -R vhost:vhost /srv/www/html
else
  install --owner=vhost --group=vhost --mode=755 --directory /srv/www/html
fi

# install status.php
cp html/status.php /srv/www/html
chmod 644 /srv/www/html/status.php
chown vhost:vhost /srv/www/html/status.php

# jailkit
apt -y install jailkit
# bugfix, fixed upstream, shouldn't be needed if jailkit package gets updated
sed -i "s/if (not config.has_key('hardlink')):/if ('hardlink' not in config):/g" /usr/sbin/jk_update
sed -i 's|paths = ssh|paths = /usr/bin/ssh*|' /etc/jailkit/jk_init.ini
sed -i "s|paths = perl, /usr/lib/perl, /usr/lib/perl5, /usr/share/perl, /usr/share/perl5|paths = /usr/bin/perl, /usr/lib/x86_64-linux-gnu/perl, /usr/lib/x86_64-linux-gnu/perl-base, /usr/share/perl, /usr/share/perl5|g" /etc/jailkit/jk_init.ini
echo "" >> /etc/jailkit/jk_init.ini
echo "[shellstack]" >> /etc/jailkit/jk_init.ini
echo "comment = full featured shell for vhost-stack jails" >> /etc/jailkit/jk_init.ini
echo "paths = curl, dircolors, du, env, git, groups, mysql, mysqldump, /etc/bash_completion, /etc/bash_completion.d/, /usr/share/bash-completion/, /etc/ssl/certs/, /etc/nanorc, /usr/local/libexec/command-not-found-handle, /usr/share/nano/, /usr/share/zoneinfo/, /usr/local/bin/composer, /usr/local/bin/wp, /usr/local/sbin/mini_sendmail" >> /etc/jailkit/jk_init.ini
echo "includesections = extendedshell, netutils, logbasics, apacheutils, php" >> /etc/jailkit/jk_init.ini
echo "" >> /etc/jailkit/jk_init.ini
echo "[php]" >> /etc/jailkit/jk_init.ini
echo "comment = php-cli and all required files" >> /etc/jailkit/jk_init.ini
echo "paths = /usr/bin/php*, /usr/bin/phar*, /etc/php/*/cli/, /etc/php/*/mods-available/, /usr/lib/php/, /usr/share/php/" >> /etc/jailkit/jk_init.ini
echo "" >> /etc/jailkit/jk_init.ini
echo "[python3]" >> /etc/jailkit/jk_init.ini
echo "comment = the python3 interpreter and libraries" >> /etc/jailkit/jk_init.ini
echo "paths = /usr/bin/python3, /usr/lib/python3, /usr/lib/python3.8, /usr/share/doc/python3, /usr/share/doc/python3-minimal, /usr/share/python3, /usr/share/man/man1/python3.1.gz" >> /etc/jailkit/jk_init.ini
echo "" >> /etc/jailkit/jk_init.ini
echo "[ruby]" >> /etc/jailkit/jk_init.ini
echo "comment = the ruby interpreter and libraries" >> /etc/jailkit/jk_init.ini
echo "paths = /usr/bin/erb. /usr/bin/gem, /usr/bin/irb, /usr/bin/rdoc, /usr/bin/ri, /usr/bin/ruby, /usr/share/doc/ruby, /usr/share/man/man1/ruby.1.gz, /usr/lib/ruby/, /usr/lib/x86_64-linux-gnu/ruby/" >> /etc/jailkit/jk_init.ini

mkdir /usr/jails
if ! [ -d "/usr/local/libexec" ]; then
  install --owner=root --group=root --mode=755 --directory /usr/local/libexec
fi
cp libexec/command-not-found-handle /usr/local/libexec/command-not-found-handle
chmod 755 /usr/local/libexec/command-not-found-handle
chown root:root /usr/local/libexec/command-not-found-handle
if ! [ -f "/etc/fstab.jails" ]; then
  touch /etc/fstab.jails
  chmod 644 /etc/fstab.jails
  echo "# /etc/fstab.jails: jail bind mounts information." > /etc/fstab.jails
fi

# varnish
apt -y install varnish
# systemctl disable varnish
# service varnish stop
cp -a etc/varnish/* /etc/varnish/
find /etc/varnish/ -type d -exec chmod 755 {} +
find /etc/varnish/ -type f -exec chmod 644 {} +
chown -R root:root /etc/varnish/
## /usr/bin/varnishncsa

# install vhost scripts
chmod 755 bin/*
cp bin/* /usr/local/bin/

# mini_sendmail so users can send out of jails
cd /usr/local/src
wget http://www.acme.com/software/mini_sendmail/mini_sendmail-1.3.9.tar.gz
tar zxf mini_sendmail-1.3.9.tar.gz
cd mini_sendmail-1.3.9/
make
cp mini_sendmail /usr/local/sbin
gzip mini_sendmail.8
cp mini_sendmail.8.gz /usr/local/share/man/man8

# phpMyAdmin
apt -y install php-bz2 php-tcpdf
cd /usr/local/src
wget https://files.phpmyadmin.net/phpMyAdmin/5.1.1/phpMyAdmin-5.1.1-all-languages.tar.gz
tar zxf phpMyAdmin-5.1.1-all-languages.tar.gz
rm -r phpMyAdmin-5.1.1-all-languages/setup/
if [ -d "phpMyAdmin-5.1.1-all-languages/test/" ]; then
  rm -r phpMyAdmin-5.1.1-all-languages/test/
fi
blowfish_secret=`pwgen 32 -1`
echo '<?php' > phpMyAdmin-5.1.1-all-languages/config.inc.php
echo "declare(strict_types=1);" >> phpMyAdmin-5.1.1-all-languages/config.inc.php
echo "\$cfg['blowfish_secret'] = '$blowfish_secret';" >> phpMyAdmin-5.1.1-all-languages/config.inc.php
echo "\$i = 0;" >> phpMyAdmin-5.1.1-all-languages/config.inc.php
echo "\$i++;" >> phpMyAdmin-5.1.1-all-languages/config.inc.php
echo "\$cfg['Servers'][\$i]['auth_type'] = 'cookie';" >> phpMyAdmin-5.1.1-all-languages/config.inc.php
echo "\$cfg['Servers'][\$i]['hide_db'] = 'information_schema|performance_schema|mysql|wsrep|vmail';" >> phpMyAdmin-5.1.1-all-languages/config.inc.php
echo "\$cfg['Servers'][\$i]['host'] = '127.0.0.1';" >> phpMyAdmin-5.1.1-all-languages/config.inc.php
echo "\$cfg['Servers'][\$i]['compress'] = false;" >> phpMyAdmin-5.1.1-all-languages/config.inc.php
echo "\$cfg['Servers'][\$i]['AllowNoPassword'] = false;" >> phpMyAdmin-5.1.1-all-languages/config.inc.php
echo "\$cfg['UploadDir'] = '';" >> phpMyAdmin-5.1.1-all-languages/config.inc.php
echo "\$cfg['SaveDir'] = '';" >> phpMyAdmin-5.1.1-all-languages/config.inc.php
echo "\$cfg['TempDir'] = '/tmp';" >> phpMyAdmin-5.1.1-all-languages/config.inc.php
echo "\$cfg['PmaNoRelation_DisableWarning'] = true;" >> phpMyAdmin-5.1.1-all-languages/config.inc.php
mv phpMyAdmin-5.1.1-all-languages /srv/www/html/phpMyAdmin
find /srv/www/html/phpMyAdmin -type d -exec chmod 755 {} +
find /srv/www/html/phpMyAdmin -type f -exec chmod 644 {} +
chown -R vhost:vhost /srv/www/html/phpMyAdmin