#! /bin/sh
#----------------------------------------------------------------------------
# /var/install/bin/list-users - list users
#
# Copyright (c) 2001-2004 Frank Meyer <frank(at)eisfair(dot)org>
#
# Creation: 04.11.2001  fm
# Last Update:  $Id$
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#----------------------------------------------------------------------------

# include eislib
. /var/install/include/eislib

act_pmode=`get_printmode`

# testroot=/soft/list-users
  testroot=''

inet_config='/etc/config.d/inet'                 # inet package config file

passwd_file="$testroot/etc/passwd"
shadow_file="$testroot/etc/shadow"
group_file="$testroot/etc/group"
ftpusers_file="$testroot/etc/ftpusers"
shells_file="$testroot/etc/shells"

# check if package inet is installed
if [ -f ${inet_config} ]; then
    . ${inet_config}
    has_inet='TRUE'
else
    ftp_default='n/a'                            # not applicable
    has_inet='FALSE'
fi

IFS=':'

# read group information
while read line
do
    set -- $line
    eval group_$3=$1
done < $group_file

# print header
clrhome
mecho -info "List users"
mecho
techo begin 2 22 7 10 7 10 5 20
techo row "" -info User -info Uid -info Group -info Gid -info Valid-PW -info FTP -info Name

tty=`tty`
row=4

# read user information
while read line
do
    set -- $line
    user="$1"
    uid="$3"
    gid="$4"
    eval group='$group_'$gid
    name="$5"
    shell="$7"

    # get password from /etc/shadow
    pword=`grep "^$user:" $shadow_file|cut -d: -f2`

    if [ "$pword" = '*' ]
    then
        password='no'                            # invalidated
    elif [ "$pword" = '!' ]
    then
        password='no'                            # invalidated
    else
        password='yes'                           # valid
    fi

    # check if FTP is allowed
    if [ "${has_inet}" = 'FALSE' ]
    then
        ftpusr="$ftp_default"
    else
        # check /etc/ftpuser only if PAM authentication is switched on
        if [ "${FTP_USE_PAM}" = 'yes' ]
        then
            ftpusers=`grep "^$user\$" $ftpusers_file 2>/dev/null`
        else
            ftpusers=''
        fi

        # check if root (uid=0) can do FTP
        if [ "${FTP_ALLOW_ROOT_ACCESS}" = 'no' ]
        then
            forbidden_uid=0
        else
            forbidden_uid=''
        fi

        # check if only anonymous is allowed
        if [ "${FTP_ONLY_ANONYMOUS}" = 'yes' ]
        then
            only_anonymous='TRUE'
        else
            only_anonymous='FALSE'
        fi

        # check if shell is in /etc/shells
        shells=`grep "^$shell\$" $shells_file`

        # ftp is not allowd if
        #    only_anonymous = 'TRUE'
        # or ftpusers       != ""
        # or uid            = forbidden_uid
        # or password       = password lock string (*) or (!)
        # or shell          not in /etc/shells
        if [ "$only_anonymous" = 'TRUE' -o "$ftpusers" != "" -o $uid = "${forbidden_uid}" -o "$password" = 'no' -o "$shells" = "" ]
        then
            ftpusr='no'
        else
            ftpusr='yes'
        fi
    fi

    # output data
    techo row "" $user $uid $group $gid $password $ftpusr $name

    row=`expr $row + 1`

    if [ "$act_pmode" = 'tty' ]
    then
       if [ $row -eq 21 ]
       then
           mecho
           mecho
           anykey <$tty

           # print header
           clrhome
           mecho -info "List users" <$tty
           mecho
           techo row "" -info User -info Uid -info Group -info Gid -info Valid-PW -info FTP -info Name
           row=4
       fi
    fi
done < $passwd_file

techo end
mecho

anykey