#!/bin/sh

: ${rspamd_processes:="$nproc"}
: ${rspamd_dkim_selector:='dkim'}
: ${rspamd_domain_whitelist:=''}
: ${rspamd_port:='11334'}
: ${rspamd_redis_maxmemory:='1g'}
: ${rspamd_admin_users:=''}
: ${postfix_virtual_domains:="$email_domain"}

postfix_user=postfix
postfix_home_dir=/var/spool/postfix

redis_user=redis
redis_data_dir=/var/db/redis
rspamd_user=rspamd
rspamd_conf_dir=/usr/local/etc/rspamd
rspamd_milter_sock="${postfix_home_dir}/rspamd.sock"
rspamd_data_dir=/var/db/rspamd
rspamd_redis_sock=/var/run/redis/rspamd.sock
rspamd_bayes_redis_sock=/var/run/redis/rspamd-bayes.sock
rspamd_redis_data_dir="${redis_data_dir}/rspamd"
rspamd_bayes_redis_data_dir="${redis_data_dir}/rspamd-bayes"
rspamd_https_cert="${nginx_conf_dir}/rspamd.crt"
rspamd_https_key="${nginx_conf_dir}/rspamd.key"
nginx_keytab="${keytab_dir}/nginx.keytab"

pkg install -y \
  postfix \
  redis \
  rspamd \
  nginx \
  ca_root_nss

# Create ZFS dataset for Redis DBs.
create_dataset -o "mountpoint=${redis_data_dir}" "${state_dataset}/redis"
zfs set \
  com.sun:auto-snapshot:daily=true \
  com.sun:auto-snapshot:weekly=true \
  "${state_dataset}/redis"

# Generate config files for redis instances.
install_template -m 0644 \
  /usr/local/etc/redis-rspamd.conf \
  /usr/local/etc/redis-rspamd-bayes.conf

# Create data directories for each redis instance.
install_directory -o "$redis_user" -m 0700 \
  "$rspamd_redis_data_dir" \
  "$rspamd_bayes_redis_data_dir"

# Enable and start redis instances.
sysrc -v \
  redis_enable=YES \
  redis_profiles='rspamd rspamd-bayes'
service redis restart

# Copy rspamd config files.
install_directory -m 0755 \
  "${rspamd_conf_dir}/local.d" \
  "${rspamd_conf_dir}/local.d/maps.d"

install_directory -m 0750 -g "$rspamd_user" "${rspamd_data_dir}/dkim"

install_file -m 0640 -g "$rspamd_user" \
  "${rspamd_conf_dir}/local.d/logging.inc" \
  "${rspamd_conf_dir}/local.d/multimap.conf" \
  "${rspamd_conf_dir}/local.d/phishing.conf" \
  "${rspamd_conf_dir}/local.d/replies.conf" \
  "${rspamd_conf_dir}/local.d/worker-normal.inc"

rspamd_ro_password_hash=$(rspamadm pw -p "$rspamd_ro_password")
rspamd_rw_password_hash=$(rspamadm pw -p "$rspamd_rw_password")

install_template -m 0640 -g "$rspamd_user" \
  "${rspamd_conf_dir}/local.d/classifier-bayes.conf" \
  "${rspamd_conf_dir}/local.d/dkim_signing.conf" \
  "${rspamd_conf_dir}/local.d/redis.conf" \
  "${rspamd_conf_dir}/local.d/worker-controller.inc" \
  "${rspamd_conf_dir}/local.d/worker-proxy.inc"

printf '%s\n' ${rspamd_domain_whitelist} | tee "${rspamd_conf_dir}/local.d/maps.d/domain-whitelist.map"

# Copy DKIM keys.
for _domain in $postfix_virtual_domains; do
  install_file -m 0640 -g "$rspamd_user" "${rspamd_data_dir}/dkim/${_domain}.key"
done

# Add rspamd user to redis group, so it can write to the redis unix socket.
pw groupmod "$redis_user" -m "$rspamd_user"

# Generate nginx configuration.
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"

# Copy TLS certificate for nginx.
install_certificate     nginx "$rspamd_https_cert"
install_certificate_key nginx "$rspamd_https_key"

# Enable and start rspamd and nginx.
sysrc -v \
  rspamd_enable=YES \
  nginx_enable=YES

# The rspamd rc script seems to hold onto open descriptors, which causes
# the parent boxconf SSH process to never close.
service rspamd restart > /dev/null 2>&1 < /dev/null
service nginx restart