flarum_ynh/scripts/install

#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source /usr/share/yunohost/helpers

#=================================================
# MANAGE SCRIPT FAILURE
#=================================================

# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#===================================================
# RETRIEVE ARGUMENTS FROM THE MANIFEST
#===================================================

# This is a multi-instance app, meaning it can be installed several times independently
# The id of the app as stated in the manifest is available as $YNH_APP_ID
# The instance number is available as $YNH_APP_INSTANCE_NUMBER (equals "1", "2", ...)
# The app instance name is available as $YNH_APP_INSTANCE_NAME
#    - the first time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample
#    - the second time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample__2
#    - ynhexample__{N} for the subsequent installations, with N=3,4, ...
# The app instance name is probably what you are interested the most, since this is
# guaranteed to be unique. This is a good unique identifier to define installation path,
# db names, ...
app=$YNH_APP_INSTANCE_NAME

# Retrieve arguments

domain=$YNH_APP_ARG_DOMAIN
path_url=$YNH_APP_ARG_PATH
admin=$YNH_APP_ARG_ADMIN
title=$YNH_APP_ARG_TITLE
is_public=$YNH_APP_ARG_IS_PUBLIC
flarum_version="v0.1.0-beta.7"

#===================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#===================================================

final_path=/var/www/$app
test ! -e "$final_path" || ynh_die "This path already contains a folder"

# Normalize the url path syntax
path_url=$(ynh_normalize_url_path $path_url)

# Check web path availability
ynh_webpath_available $domain $path_url

# Register (book) web path
ynh_webpath_register $app $domain $path_url

#===================================================
# STORE SETTINGS FROM MANIFEST
#===================================================

# Save app settings
ynh_app_setting_set $app domain $domain
ynh_app_setting_set $app path $path_url
ynh_app_setting_set $app admin $admin
ynh_app_setting_set $app is_public $is_public
ynh_app_setting_set $app final_path $final_path

#===================================================
# CREATE DEDICATED USER
#===================================================

ynh_system_user_create $app "$final_path"
sudo usermod -a -G www-data $app

#=================================================
# COMPOSER INSTALLATION
#=================================================

composer_path=/opt/${app}_composer
# Test if composer is installed
if ! type "${composer_path}/composer" > /dev/null; then

  # Prepare composer directories
  sudo mkdir -p $composer_path
  sudo mkdir -p $composer_path/cache
  sudo chown -R $app:www-data $composer_path
  sudo chmod -R 0775 $composer_path

  # Install composer (https://getcomposer.org)
  EXPECTED_SIGNATURE=$(wget https://composer.github.io/installer.sig -O - -q)
  php -r "copy('https://getcomposer.org/installer', '$composer_path/composer-setup.php');"
  ACTUAL_SIGNATURE=$(php -r "echo hash_file('SHA384', '$composer_path/composer-setup.php');")
  if [ "$EXPECTED_SIGNATURE" = "$ACTUAL_SIGNATURE" ]
  then
    sudo su - $app -s /bin/bash -c "php $composer_path/composer-setup.php --install-dir=$composer_path --filename=composer --quiet"
    RESULT=$?
  else
    >&2 echo 'ERROR: Invalid Composer installer signature'
    RESULT=1
  fi
  if [ $RESULT != 0 ]
  then
    ynh_die 'Composer could not be installed'
  fi

fi

COMPOSER_HOME=$composer_path

#=================================================
# FLARUM INSTALLATION
#=================================================

# Prepare Flarum temp directory
tmp=/tmp/$app
sudo mkdir -p $tmp
sudo chown -R $app:www-data $tmp
sudo chmod -R 0775 $tmp

# Install Flarum
sudo su - $app -s /bin/bash -c "php -d memory_limit=-1 $composer_path/composer create-project flarum/flarum $tmp $flarum_version --stability=beta --ansi"

sudo cp -Rf $tmp/* $final_path
sudo chown -R $app:www-data $final_path
sudo chmod 0775 -R $final_path
ynh_secure_remove "$tmp"

#=================================================
# CREATE A MYSQL DATABASE
#=================================================

db_name=$(ynh_sanitize_dbid $app)
ynh_app_setting_set $app db_name $db_name
ynh_mysql_setup_db $db_name $db_name
ynh_app_setting_set "$app" db_pwd "$db_pwd"

#=================================================
# NGINX CONFIGURATION
#=================================================

# Bug in Nginx with locations and aliases (see http://stackoverflow.com/a/35102259 )
if [ $path_url = "/" ]; then
  sed -i "s@YNH_WWW_ROOTPATH@@g" ../conf/nginx.conf
  sed -i "s@YNH_WWW_ROOTAPP@/@g" ../conf/nginx.conf
else
  sed -i "s@YNH_WWW_ROOTPATH@$path_url@g" ../conf/nginx.conf
  sed -i "s@YNH_WWW_ROOTAPP@$path_url$path_url@g" ../conf/nginx.conf
fi
# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# PHP-FPM CONFIGURATION
#=================================================

# Create a dedicated php-fpm config
ynh_add_fpm_config

#=================================================
# SETUP LOGROTATE
#=================================================

# Use logrotate to manage app-specific logfile(s)
ynh_use_logrotate

#=================================================
# SETUP SSOWAT
#=================================================

if [ $is_public -eq 0 ]
then	# Remove the public access
  ynh_app_setting_delete $app skipped_uris
fi
# Make app public if necessary
if [ $is_public -eq 1 ]
then
  # unprotected_uris allows SSO credentials to be passed anyway.
  ynh_app_setting_set $app unprotected_uris "/"
fi

#=================================================
# RELOAD NGINX
#=================================================

systemctl reload nginx

#=================================================
# FLARUM POST-INSTALL
#=================================================

# Only if admin user or title were specified
if [[ -n $admin && -n $title ]]; then
  finalflarumconf="$final_path/configuration.yml"
  cp ../sources/configuration.yml $finalflarumconf
  admin_pwd=$(ynh_string_random 8)
  sed -i "s@YNH_APP_DOMAIN@$domain@g" $finalflarumconf
  sed -i "s@/YNH_WWW_PATH@$path_url@g" $finalflarumconf
  sed -i "s@YNH_WWW_APP@$app@g" $finalflarumconf
  sed -i "s@YNH_DB_PASS@$db_pwd@g" $finalflarumconf
  sed -i "s@YNH_ADMIN_USER@$admin@g" $finalflarumconf
  sed -i "s@YNH_ADMIN_PASS@$admin_pwd@g" $finalflarumconf
  admin_mail=$(ynh_user_get_info $admin mail)
  sed -i "s%YNH_ADMIN_EMAIL%$admin_mail%g" $finalflarumconf
  sed -i "s@YNH_FORUM_TITLE@$title@g" $finalflarumconf
  cd "$final_path"
  exec_as www-data \
    php -d memory_limit=-1 flarum install -f configuration.yml
  ynh_secure_remove $finalflarumconf

  # Install the SSOwat auth extension
  sudo su - www-data -s /bin/bash -c "cd $final_path && $composer_path/composer require 'tituspijean/flarum-ext-auth-ssowat:*@dev' --ansi"

  # Configure SSOwat auth extension
  ssowatdomain=$(</etc/yunohost/current_host)
  sql_command="INSERT INTO \`settings\` (\`key\`, \`value\`) VALUES ('flarum-ext-auth-ssowat.address', '$ssowatdomain'), ('flarum-ext-auth-ssowat.onlyUse', '0');"
  ynh_mysql_execute_as_root "$sql_command" $db_name

  # Enable SSOwat auth extension
  sql_command="SELECT \`value\` FROM settings WHERE \`key\` = 'extensions_enabled'"
  old_extensions_enabled=$(ynh_mysql_execute_as_root "$sql_command" $db_name | tail -1)
  addition=",\"tituspijean-auth-ssowat\"]"
  new_extensions_enabled=${old_extensions_enabled::-1}$addition
  sql_command="UPDATE \`settings\` SET \`value\`='$new_extensions_enabled' WHERE \`key\`='extensions_enabled';"
  ynh_mysql_execute_as_root "$sql_command" $db_name

  app_message="User : $admin, password : $admin_pwd
  Change your password!
  Your forum is accessible at https://$domain$path_url"
  >&2 echo $app_message
  ynh_send_readme_to_admin "$app_message" "$admin"
else
  app_message="Post-installation required, visit your Flarum instance."
  >&2 echo $app_message
  ynh_send_readme_to_admin "$app_message" "$admin"
fi