# File:		pgsql.get
# Changes:	
#	20010224 Ola Lundqvist <opal@debian.org>
#	20011022 Luca De Vitis <luca@debian.org>
#		Allowed reinclusion.
#	20020116 Ola Lundqvist <opal@debian.org>
#		Documented the reinclusion.
#	20020126 Ola Lundqvist <opal@debian.org>
#		Added defaults for dbadmin and documented all defaults.
#		Removed the reinclusion. No high computation and it will work
#		fine anyway.
#	20020926 Ola Lundqvist <opal@debian.org>
#		 Arndt Schönewald <arndt@lin02384n012.mc.schoenewald.de>
#		Changed so that sudo is no longer needed. Patch description
#		and code from Arndt Schönewald.
#		This really solves a big issue with wwwconfig-common.
#	20020926 Ola Lundqvist <opal@debian.org>
#		 Arndt Schönewald <arndt@lin02384n012.mc.schoenewald.de>
#		Minor fix from Arndt Schönewald that fix problem if someone
#		use a non-sh compatible shell.
#       20080327 Morten Werner Forsbring <werner@debian.org>
#               Support for postgres 8.x.
# Needs:	$dbserver  - the server to connect to (defaults to localhost).
#		$dbadmin   - the administrator name (defaults to postgres).
#		$dbadmpass - the administrator password (not supported).
# Sets:		$pgsqlcmd so that administration access are prepared
#		$systemdb  - the name of the system db.

if [ -z "$dbadmin" ] ; then
    dbadmin=postgres
fi
if [ -z "$dbserver" ] ; then
    dbserver=localhost
fi
if [ -z "$systemdb" ] ; then
    systemdb=template1
fi
if [ "$dbserver" != "localhost" ] ; then
    hostopt="-h '$dbserver'"
fi

use_dbuser=true

pgsqlcmd()
{
    if [ "$use_dbuser" = true ]; then
	local user="$dbuser"
	local pass="$dbpass"
    else
	local user="$dbadmin"
	local pass="$dbadmpass"
    fi

    _psql_args=
    while [ $# -gt 0 ]
    do
        _psql_args="$_psql_args '`echo \"$1\" | sed -e \"s/'/'\\\\\\''/g\"`'"
        shift
    done

    MYUID=`id -un`
    if [ -z "$hostopt" -a \( "$MYUID" = root -o "$UID" = "$user" \) ] && grep -q ^"$user": /etc/passwd ; then
	su -s /bin/sh $user -c "psql $hostopt $_psql_args"
    else
	PGPASSDIR=`mktemp -d`
	if [ $? -ne 0 ]; then
	    exit 1
	fi
	PGPASSFILE=$PGPASSDIR/.pgpass
	export PGPASSFILE

	if [ ! -z "$pass" ] ; then
	    OLDUMASK=`umask`
	    umask 077
	    echo "*:*:*:$user:$pass" > $PGPASSFILE
	    umask $OLDUMASK
	fi

	eval psql -U "$user" $hostopt $_psql_args

	rm -rf "$PGPASSDIR"
    fi
}

pgsqlcmd=pgsqlcmd