/usr/share/system-tools-backends-2.0/scripts/Users/Shells.pm is in system-tools-backends 2.10.2-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# Copyright (C) 2000-2001 Ximian, Inc.
#
# Authors: Hans Petter Jansson <hpj@ximian.com>,
# Arturo Espinosa <arturo@ximian.com>,
# Tambet Ingo <tambet@ximian.com>.
# Grzegorz Golawski <grzegol@pld-linux.org> (PLD Support)
# Carlos Garnacho <carlosg@gnome.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU Library General Public License as published
# by the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
package Users::Shells;
use Utils::Util;
use Utils::Report;
use Utils::File;
use Utils::Replace;
# Totally generic atm
$shells_file = "/etc/shells";
sub get_files
{
return $shells_file;
}
sub push_shell
{
my ($shells, $shell) = @_;
$$shells{$shell} = 1 if (stat ($shell));
}
sub get
{
my ($ifh, %shells, $shell, @arr);
# Init shells, I think every *nix has /bin/false.
&push_shell (\%shells, "/bin/false");
if ($Utils::Backend::tool{"system"} eq "SunOS")
{
#SunOS doesn't have anything like /etc/shells
my $possible_shells =
[ "/bin/bash", "/bin/csh", "/bin/jsh", "/bin/ksh", "/bin/pfcsh", "/bin/pfksh", "/bin/pfsh", "/bin/sh",
"/bin/tcsh", "/bin/zsh", "/sbin/jsh", "/sbin/jsh", "/sbin/pfsh", "/sbin/sh", "/usr/bin/bash",
"/usr/bin/csh", "/usr/bin/jsh", "/usr/bin/ksh", "/usr/bin/pfcsh", "/usr/bin/pfksh", "/usr/bin/pfsh",
"/usr/bin/sh", "/usr/bin/tcsh", "/usr/bin/zsh", "/usr/xpg4/bin/sh" ];
foreach $shell (@$possible_shells)
{
&push_shell (\%shells, $shell);
}
}
else
{
$ifh = &Utils::File::open_read_from_names($shells_file);
while (<$ifh>)
{
next if &Utils::Util::ignore_line ($_);
chomp;
&push_shell (\%shells, $_);
}
&Utils::File::close_file ($ifh);
}
foreach $i (keys (%shells)) {
push @arr, $i;
}
return \@arr;
}
sub set
{
my ($shells) = @_;
my ($buff, $line, $nline);
#SunOS doesn't have /etc/shells
return if ($Utils::Backend::tool{"system"} eq "SunOS");
$buff = &Utils::File::load_buffer ($shells_file);
return unless $buff;
&Utils::File::join_buffer_lines ($buff);
$nline = 0;
# delete all file entries that really exist,
# this is done for not deleting entries that
# might be installed later
while ($nline <= $#$buff)
{
$line = $$buff[$nline];
chomp $line;
if (!&Utils::Util::ignore_line ($line))
{
delete $$buff[$nline] if (stat ($line));
}
$nline++;
}
# Add shells list
foreach $line (@$shells)
{
push @$buff, "$line\n" if (stat ($line));
}
&Utils::File::save_buffer ($buff, $shells_file);
}
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