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#!/bin/sh

: ${icingaweb_api_password:='changeme'}
: ${icingaweb_dbhost:="$postgres_host"}
: ${icingaweb_dbname:='icingaweb'}
: ${icingaweb_access_role:='icinga-access'}

# Note that icingaweb2 does not support nested groups.
: ${icingaweb_admin_groups:=''}

icingaweb_https_cert="${nginx_conf_dir}/icingaweb.crt"
icingaweb_https_key="${nginx_conf_dir}/icingaweb.key"
icingaweb_install_dir=/usr/local/www/icingaweb2
icingaweb_webroot="${icingaweb_install_dir}/public"
icingaweb_conf_dir=/usr/local/etc/icingaweb2
icingaweb_fpm_socket=/var/run/fpm-icingaweb.sock
nginx_keytab="${keytab_dir}/nginx.keytab"

icingaweb_psql(){
  KRB5CCNAME=MEMORY: KRB5_CLIENT_KTNAME="$icingaweb_client_keytab" \
  psql \
    --quiet --no-align --tuples-only --echo-all \
    --host="$icingaweb_dbhost" \
    --dbname="$icingaweb_dbname" \
    --username="$icinga_username" \
    --no-password \
    "$@"
}

# Install packages.
pkg install -y \
  icingaweb2-php${php_version} \
  icingaweb2-module-icingadb-php${php_version} \
  nginx

# Create icingaweb postgres user and database.
postgres_create_database "$icingaweb_dbhost" "$icingaweb_dbname" "$icinga_username"

# Apply icingaweb database schema.
if ! icingaweb_psql -c 'SELECT 1 FROM icingaweb_schema'; then
  icingaweb_psql -f /usr/local/www/icingaweb2/schema/pgsql.schema.sql
fi

# Generate icingaweb configuration.
install_directory -m 2770 -g "$nginx_user" \
  "$icingaweb_conf_dir" \
  "${icingaweb_conf_dir}/enabledModules" \
  "${icingaweb_conf_dir}/modules" \
  "${icingaweb_conf_dir}/modules/icingadb"
install_template -m 0660 -g "$nginx_user" \
  "${icingaweb_conf_dir}/modules/icingadb/commandtransports.ini" \
  "${icingaweb_conf_dir}/modules/icingadb/config.ini" \
  "${icingaweb_conf_dir}/modules/icingadb/redis.ini" \
  "${icingaweb_conf_dir}/config.ini" \
  "${icingaweb_conf_dir}/resources.ini" \
  "${icingaweb_conf_dir}/authentication.ini" \
  "${icingaweb_conf_dir}/groups.ini" \
  "${icingaweb_conf_dir}/roles.ini"
ln -snfv "${icingaweb_install_dir}/modules/icingadb" "${icingaweb_conf_dir}/enabledModules/icingadb"

# Generate nginx configuration.
install_file -m 0644 /usr/local/etc/nginx/fastcgi_params
install_template -m 0644 \
  /usr/local/etc/nginx/nginx.conf \
  /usr/local/etc/nginx/vhosts.conf

# Create HTTP service principal and keytab.
add_principal -nokey -x "containerdn=${services_basedn}" "HTTP/${fqdn}"
ktadd -k "$nginx_keytab" "HTTP/${fqdn}"
chgrp "$nginx_user" "$nginx_keytab"
chmod 640 "$nginx_keytab"

# Generate php-fpm configuration.
install_file -m 0644 \
  /usr/local/etc/php.ini \
  /usr/local/etc/php-fpm.conf
install_template -m 0644 \
  /usr/local/etc/php-fpm.d/icingaweb.conf
> /usr/local/etc/php-fpm.d/www.conf

# Copy TLS certificate for nginx.
install_certificate     nginx "$icingaweb_https_cert"
install_certificate_key nginx "$icingaweb_https_key"

# Enable and start daemons.
sysrc -v \
  nginx_enable=YES \
  php_fpm_enable=YES
service nginx restart
service php_fpm restart

# Create icingaweb access role.
ldap_add "cn=${icingaweb_access_role},${roles_basedn}" <<EOF
objectClass: groupOfMembers
cn: ${icingaweb_access_role}
EOF