#!/bin/sh
#
#	$OpenBSD: updatedb.sh,v 1.11 2003/09/29 16:03:16 deraadt Exp $
#
# Copyright (c) September 1995 Wolfram Schneider <wosch@FreeBSD.org>. Berlin.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# updatedb - update locate database for local mounted filesystems
#
# $Id: updatedb.sh,v 1.11 2003/09/29 16:03:16 deraadt Exp $

LOCATE_CONFIG="/etc/locate.rc"
if [ -f "$LOCATE_CONFIG" -a -r "$LOCATE_CONFIG" ]; then
       . $LOCATE_CONFIG
fi

# The directory containing locate subprograms
: ${LIBEXECDIR=/usr/libexec}; export LIBEXECDIR
TMPDIR=${TMPDIR:-/tmp}; export TMPDIR;

PATH=$LIBEXECDIR:/bin:/usr/bin:$PATH; export PATH

USAGE="Usage: $0 [--tmpdir=dir] [--fcodes=dbfile] [--searchpaths='dir1 dir2...'] [--prunepaths='dir1 dir2...'] [--filesystems='type1 type2...']"

: ${mklocatedb=locate.mklocatedb}	 # make locate database program
: ${FCODES=/var/db/locate.database}	 # the database
: ${SEARCHPATHS="/"}			 # directories to be put in the database
: ${PRUNEPATHS="/tmp /usr/tmp /var/tmp"} # unwanted directories
: ${FILESYSTEMS="ffs ufs"}		 # allowed filesystems 
: ${find=find}

# Command line args override rc file and defaults
while test $# != 0; do
	option=`echo $1 | sed 's/^\([^=]*\).*$/\1/'`
	optarg=`echo $1 | sed 's/^[^=]*=\(.*$\)/\1/'`

	# All options take an argument
	if [ "$option" = "$optarg" ]; then
		echo "$USAGE"
		exit 1
	fi

	case "$option" in
		--tmpdir) TMPDIR="$optarg";;
		--fcodes) FCODES="$optarg";;
		--searchpaths) SEARCHPATHS="$optarg";;
		--prunepaths) PRUNEPATHS="$optarg";;
		--filesystems) FILESYSTEMS="$optarg";;
	esac
	shift
done

case X"$SEARCHPATHS" in 
	X) echo "$0: empty variable SEARCHPATHS"; exit 1;; esac
case X"$FILESYSTEMS" in 
	X) echo "$0: empty variable FILESYSTEMS"; exit 1;; esac

# Make a list a paths to exclude in the locate run
excludes="! (" or=""
for fstype in $FILESYSTEMS
do
       excludes="$excludes $or -fstype $fstype"
       or="-or"
done
excludes="$excludes ) -prune"

case X"$PRUNEPATHS" in
	X) ;;
	*) for path in $PRUNEPATHS
           do 
		excludes="$excludes -or -path $path -prune"
	   done;;
esac

tmp=`mktemp ${TMPDIR=/tmp}/_updatedb.XXXXXXXXXX` || exit 1
trap 'rm -rf $tmp' 0 1 2 3 5 10 15

# search locally
# echo $find $SEARCHPATHS $excludes -or -print && exit
if $find $SEARCHPATHS $excludes -or -print 2>/dev/null | 
        $mklocatedb > $tmp
then
	case X"`$find $tmp -size -257c -print`" in
		X) if [ "$FCODES" = "-" ]; then
			cat $tmp
		   else
			cat $tmp > $FCODES
		   fi;;
		*) echo "updatedb: locate database $tmp is empty"
		   exit 1
	esac
fi
