#!/bin/bash
# Copyright (c) 2004 Matthias S. Benkmann <article AT winterdrache DOT de>
# You may do everything with this code except misrepresent its origin.
# PROVIDED `AS IS' WITH ABSOLUTELY NO WARRANTY OF ANY KIND!

if [ $# != 1 -o "$1" = "--help" ]; then
    echo 1>&2
    echo 1>&2 'USAGE: '"${0##*/}"' <user_or_group>'
    echo 1>&2
    echo 1>&2 '  Outputs a categorized list of files and directories with properties'
    echo 1>&2 '  that could mean trouble and should be investigated.'
    echo 1>&2 '  Suspicious objects will be reported only if group and/or user equals'
    echo 1>&2 '  <user_or_group> (numeric UID/GID allowed).'
    echo 1>&2 '  This script calls `'"${0%_*}'"' for the real work.'
    echo 1>&2
    exit 1
fi

ugname="$1"

ugmatcher=(-false)
# test if find accepts ugname as a user, and append to ugmatcher if it does
if find / -maxdepth 0 -user "$ugname" >/dev/null 2>&1 ; then
    ugmatcher[${#ugmatcher[@]}]="-or"
    ugmatcher[${#ugmatcher[@]}]="-user"
    ugmatcher[${#ugmatcher[@]}]="$ugname"
fi
# test if find accepts ugname as a group, and append to ugmatcher if it does
if find / -maxdepth 0 -group "$ugname" >/dev/null 2>&1 ; then
    ugmatcher[${#ugmatcher[@]}]="-or"
    ugmatcher[${#ugmatcher[@]}]="-group"
    ugmatcher[${#ugmatcher[@]}]="$ugname"
fi

# if find accepted ugname as neither user nor group, then exit
if [ "${#ugmatcher[@]}" = 1 ]; then
    echo 1>&2 'find does not accept `'"$ugname'"' as group or user name'
    exit 1
fi

"${0%_*}" "${ugmatcher[@]}"