#!/bin/bash
# This is the entry point for configuring the system.
#####################################################

source setup/functions.sh # load our functions

# Check system setup: Are we running as root on Ubuntu 14.04 on a
# machine with enough memory? If not, this shows an error and exits.
source setup/preflight.sh

# Ensure Python reads/writes files in UTF-8. If the machine
# triggers some other locale in Python, like ASCII encoding,
# Python may not be able to read/write files. Here and in
# the management daemon startup script.

if [ -z `locale -a | grep en_US.utf8` ]; then
    # Generate locale if not exists
    hide_output locale-gen en_US.UTF-8
fi

export LANGUAGE=en_US.UTF-8
export LC_ALL=en_US.UTF-8
export LANG=en_US.UTF-8
export LC_TYPE=en_US.UTF-8

# Recall the last settings used if we're running this a second time.
if [ -f /etc/mailinabox.conf ]; then
	# Run any system migrations before proceeding. Since this is a second run,
	# we assume we have Python already installed.
	setup/migrate.py --migrate || exit 1

	# Load the old .conf file to get existing configuration options loaded
	# into variables with a DEFAULT_ prefix.
	cat /etc/mailinabox.conf | sed s/^/DEFAULT_/ > /tmp/mailinabox.prev.conf
	source /tmp/mailinabox.prev.conf
	rm -f /tmp/mailinabox.prev.conf
else
	FIRST_TIME_SETUP=1
fi

# Put a start script in a global location. We tell the user to run 'mailinabox'
# in the first dialog prompt, so we should do this before that starts.
cat > /usr/local/bin/mailinabox << EOF;
#!/bin/bash
cd `pwd`
source setup/start.sh
EOF
chmod +x /usr/local/bin/mailinabox

# Ask the user for the PRIMARY_HOSTNAME, PUBLIC_IP, PUBLIC_IPV6, and CSR_COUNTRY
# if values have not already been set in environment variables. When running
# non-interactively, be sure to set values for all! Also sets STORAGE_USER and
# STORAGE_ROOT.
source setup/questions.sh

# Run some network checks to make sure setup on this machine makes sense.
# Skip on existing installs since we don't want this to block the ability to
# upgrade, and these checks are also in the control panel status checks.
if [ -z "$DEFAULT_PRIMARY_HOSTNAME" ]; then
if [ -z "$SKIP_NETWORK_CHECKS" ]; then
	source setup/network-checks.sh
fi
fi

# Create the STORAGE_USER and STORAGE_ROOT directory if they don't already exist.
# If the STORAGE_ROOT is missing the mailinabox.version file that lists a
# migration (schema) number for the files stored there, assume this is a fresh
# installation to that directory and write the file to contain the current
# migration number for this version of Mail-in-a-Box.
if ! id -u $STORAGE_USER >/dev/null 2>&1; then
	useradd -m $STORAGE_USER
fi
if [ ! -d $STORAGE_ROOT ]; then
	mkdir -p $STORAGE_ROOT
fi
if [ ! -f $STORAGE_ROOT/mailinabox.version ]; then
	echo $(setup/migrate.py --current) > $STORAGE_ROOT/mailinabox.version
	chown $STORAGE_USER.$STORAGE_USER $STORAGE_ROOT/mailinabox.version
fi


# Save the global options in /etc/mailinabox.conf so that standalone
# tools know where to look for data.
cat > /etc/mailinabox.conf << EOF;
STORAGE_USER=$STORAGE_USER
STORAGE_ROOT=$STORAGE_ROOT
PRIMARY_HOSTNAME=$PRIMARY_HOSTNAME
PUBLIC_IP=$PUBLIC_IP
PUBLIC_IPV6=$PUBLIC_IPV6
PRIVATE_IP=$PRIVATE_IP
PRIVATE_IPV6=$PRIVATE_IPV6
CSR_COUNTRY=$CSR_COUNTRY
EOF

# Start service configuration.
source setup/system.sh
source setup/ssl.sh
source setup/dns.sh
source setup/mail-postfix.sh
source setup/mail-dovecot.sh
source setup/mail-users.sh
source setup/dkim.sh
source setup/spamassassin.sh
source setup/web.sh
source setup/webmail.sh
source setup/owncloud.sh
source setup/zpush.sh
source setup/management.sh
source setup/munin.sh

# Ping the management daemon to write the DNS and nginx configuration files.
until nc -z -w 4 localhost 10222
do
	echo Waiting for the Mail-in-a-Box management daemon to start...
	sleep 2
done
tools/dns_update
tools/web_update

# If there aren't any mail users yet, create one.
source setup/firstuser.sh

# Done.
echo
echo "-----------------------------------------------"
echo
echo Your Mail-in-a-Box is running.
echo
echo Please log in to the control panel for further instructions at:
echo
if management/status_checks.py --check-primary-hostname; then
	# Show the nice URL if it appears to be resolving and has a valid certificate.
	echo https://$PRIMARY_HOSTNAME/admin
	echo
	echo "If you have a DNS problem put the box's IP address in the URL"
	echo "(https://$PUBLIC_IP/admin) but then check the SSL fingerprint:"
	openssl x509 -in $STORAGE_ROOT/ssl/ssl_certificate.pem -noout -fingerprint \
        	| sed "s/SHA1 Fingerprint=//"
else
	echo https://$PUBLIC_IP/admin
	echo
	echo You will be alerted that the website has an invalid certificate. Check that
	echo the certificate fingerprint matches:
	echo
	openssl x509 -in $STORAGE_ROOT/ssl/ssl_certificate.pem -noout -fingerprint \
        	| sed "s/SHA1 Fingerprint=//"
	echo
	echo Then you can confirm the security exception and continue.
	echo
fi