#!/bin/sh
#
# postgresql	This is the init script for starting up the PostgreSQL
#		server
#
# chkconfig:	345 85 15
#
# description:	Starts and stops the PostgreSQL backend daemon that handles \
#		all database requests.
#
# processname:	postmaster
# pidfile:	$POSTGRES_DATA_DIR/postmaster.pid

# Source function library
. /etc/rc.d/init.d/functions

# Get network config
. /etc/sysconfig/network

# Get service config
if [ -f /etc/sysconfig/postgresql ] ; then
        . /etc/sysconfig/postgresql
else
        ALLOW_TCP_CONNECTIONS=no
	ALLOW_USE_SSL=no
	POSTGRES_DATA_DIR=/var/lib/pgsql
	POSTGRES_LOG=/var/log/pgsql
fi

# Check that networking is up.
if is_no "${NETWORKING}"; then
	msg_network_down PostgreSQL
	exit 1
fi

# check if postmaster is realy alive
if [ -f $POSTGRES_DATA_DIR/postmaster.pid ]; then
    if ps -p `head -1 $POSTGRES_DATA_DIR/postmaster.pid` > /dev/null ; then
	# ok. it's alive
	echo > /dev/null;
    else
	# oh, it has crashed
	rm -f  /var/lock/subsys/postgresql
    fi
else
	# it's stopped.
	rm -f  /var/lock/subsys/postgresql
fi


# See how we were called.
case "$1" in
  start)
	# Check if the service is already running?
	if [ -f /var/lock/subsys/postgresql ]; then
  		msg_already_running PostgreSQL
	else 	
		if is_yes "$ALLOW_USE_SSL"; then
			if is_no "$ALLOW_TCP_CONNECTIONS"; then
				nls "You must enable ALLOW_TCP_CONNECTIONS in order to use SSL"
				exit 1
			elif [ ! -f "$POSTGRES_DATA_DIR/server.key" ]; then
				nls "$POSTGRES_DATA_DIR/server.key not found!"
				exit 1
			elif [ ! -f "$POSTGRES_DATA_DIR/server.crt" ]; then
				nls "$POSTGRES_DATA_DIR/server.crt not found!"
				exit 1
			fi
		fi
		
		# Sanity check
		[ -e /tmp/.s.PGSQL.5432 ] || rm -f /tmp/.s.PGSQL.5432
		[ -f /tmp/.s.PGSQL.5432.lock ] || rm -f /tmp/.s.PGSQL.5432.lock
		
		# Check for the PGDATA structure
		if [ -f $POSTGRES_DATA_DIR/PG_VERSION ] && [ -f $POSTGRES_DATA_DIR/global/pg_control ]; then
		    # Check version of existing PGDATA
		    if [ `cat $POSTGRES_DATA_DIR/PG_VERSION` != '7.2' ]; then
			show "Databases created under incompatibile version. Migrate them first."; fail
			exit 1
		    fi
		else
		    # Create sample database
            	    if [ ! -d $POSTGRES_DATA_DIR ]; then
			mkdir -p $POSTGRES_DATA_DIR
			chown postgres.postgres $POSTGRES_DATA_DIR
			chmod 700 $POSTGRES_DATA_DIR
		    fi
		    TMPDIR=/tmp su postgres -c "LD_LIBRARY_PATH=/usr/lib \
			initdb --pgdata=$POSTGRES_DATA_DIR \
			-L /usr/share/postgresql"
		fi
		
		msg_starting PostgreSQL 
		busy
		PGSQL_CMDLINE="$([ -n "$POSTGRES_DATA_DIR" ] && echo "-D $POSTGRES_DATA_DIR") \
		    $(is_yes "$POSTGRES_QUIET" && echo '-s')";
		POSTMASTER_OPTIONS=" \
		    $(is_yes "$POSTGRES_QUIET" && echo '-S') \
		    $(is_yes "$POSTGRES_DISABLE_FSYNC" && echo '-F') \
		    $(is_yes "$ALLOW_TCP_CONNECTIONS" && echo '-i') \
		    $(is_yes "$ALLOW_USE_SSL" && echo '-l')";

		TMPDIR=/tmp su postgres -c "\
			$(echo "/usr/bin/pg_ctl start -w $PGSQL_CMDLINE -l $POSTGRES_LOG") \
			$([ "$POSTMASTER_OPTIONS". != . ] && echo "-o '$POSTMASTER_OPTIONS'") \
			$(echo "2>&1 >/dev/null")";
		
		out=`status postmaster`
		if [ $? -eq 0 ]; then 
		    deltext; ok
		else
		    deltext; fail 
		    exit 1	
		fi
	fi
	touch /var/lock/subsys/postgresql
	;;
  stop)

  	if [ ! -f /var/lock/subsys/postgresql ]; then
		msg_not_running PostgreSQL
		exit 0	
	fi
	msg_stopping PostgreSQL
	busy
	PGSQL_CMDLINE="$([ -n "$POSTGRES_DATA_DIR" ] && echo "-D $POSTGRES_DATA_DIR")";
	TMPDIR=/tmp su postgres -c "/usr/bin/pg_ctl stop $PGSQL_CMDLINE -m fast 2>&1 >/dev/null"
	out=`status postmaster`
	if [ $? -eq 0 ]; then
		deltext; fail
		echo -e "\n$out";
		exit 1
	else
		deltext; ok
	fi
	rm -f $POSTGRES_DATA_DIR/postmaster.pid
	rm -f /var/lock/subsys/postgresql
	;;
  status)
	PGSQL_CMDLINE="$([ -n "$POSTGRES_DATA_DIR" ] && echo "-D $POSTGRES_DATA_DIR")";
	TMPDIR=/tmp su postgres -c "/usr/bin/pg_ctl status $PGSQL_CMDLINE"
	;;
  restart)
  	$0 stop
	$0 start
	;;
  reload)
  	if [ ! -f /var/lock/subsys/postgresql ]; then
		msg_not_running PostgreSQL
		exit 0	
	fi
	msg_reloading PostgreSQL
	busy

	PGSQL_CMDLINE="$([ -n "$POSTGRES_DATA_DIR" ] && echo "-D $POSTGRES_DATA_DIR") \
	    $([ "$POSTGRES_QUIET". = yes. ] && echo '-s')";
	POSTMASTER_OPTIONS=" \
	    $([ "$POSTGRES_QUIET". = yes. ] && echo '-S') \
	    $([ "$POSTGRES_DISABLE_FSYNC". = yes. ] && echo '-F') \
	    $([ "$ALLOW_TCP_CONNECTIONS". = yes. ] && echo '-i')";

	TMPDIR=/tmp su postgres -c "\
		$(echo "/usr/bin/pg_ctl restart $PGSQL_CMDLINE -l $POSTGRES_LOG") \
		$([ "$POSTMASTER_OPTIONS". != . ] && echo "-o '$POSTMASTER_OPTIONS'") \
		$(echo "2>&1 >/dev/null")";

	out=`status postmaster`
	if [ $? -eq 0 ]; then
		deltext; ok
	else
		deltext; fail
		echo -e "\n$out";
		exit 1
	fi
	;;
  *)
	msg_usage "$0 {start|stop|status|restart|reload}"
	exit 1
esac

exit 0