#!/usr/bin/perl
# adduser: a utility to add users to the system
# addgroup: a utility to add groups to the system
# Copyright (C) 1997, 1998, 1999 Guy Maor <maor@debian.org>
# Copyright (C) 1995 Ted Hajek <tedhajek@boombox.micro.umn.edu>
# Ian A. Murdock <imurdock@gnu.ai.mit.edu>
# Bugfixes and other improvements Roland Bauerschmidt <rb@debian.org>
# General scheme of the program adapted by the original debian 'adduser'
# program by Ian A. Murdock <imurdock@gnu.ai.mit.edu>.
#
# 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.
#
# 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
#
####################
# See the usage subroutine for explanation about how the program can be called
####################
use warnings;
use strict;
use Debian::AdduserCommon;
use Getopt::Long;
my $version = "3.118ubuntu5";
###################
# return values
use constant RET_OK => 0; # OK
use constant RET_OBJECT_ALREADY_EXISTS => 1; # the user or group does already exist, so the requested action cannot be performed
use constant RET_INVALID_CHARS_IN_NAME => 1; # the provided name contains invalid characters
use constant RET_ADDUSER_ABORTED => 1; # the program was aborted (eg via Ctrl+C)
use constant RET_INVALID_CALL => 1; # getopt returned with "false"
BEGIN {
local $ENV{PERL_DL_NONLAZY}=1;
eval 'use Locale::gettext';
if ($@) {
*gettext = sub { shift };
*textdomain = sub { "" };
*LC_MESSAGES = sub { 5 };
}
eval {
require POSIX;
import POSIX qw(setlocale);
};
if ($@) {
*setlocale = sub { return 1 };
}
eval {
require I18N::Langinfo;
import I18N::Langinfo qw(langinfo YESEXPR NOEXPR);
};
if ($@) {
*langinfo = sub { return shift; };
*YESEXPR = sub { "^[yY]" };
*NOEXPR = sub { "^[nN]" };
}
}
setlocale(LC_MESSAGES, "");
textdomain("adduser");
my $yesexpr = langinfo(YESEXPR());
my %config; # configuration hash
my @defaults = ("/etc/adduser.conf");
my $nogroup_id = getgrnam("nogroup") || 65534;
$0 =~ s+.*/++;
our $verbose = 1; # should we be verbose?
my $allow_badname = 0; # should we allow bad names?
my $ask_passwd = 1; # ask for a passwd?
my $disabled_login = 0; # leave the new account disabled?
our $configfile = undef;
our $found_group_opt = undef;
our $found_sys_opt = undef;
our $ingroup_name = undef;
our $new_firstuid = undef;
our $new_gecos = undef;
our $new_gid = undef;
our $new_lastuid = undef;
our $new_uid = undef;
our $no_create_home = undef;
our $special_home = undef;
our $special_shell = undef;
our $add_extra_groups = 0;
our $use_extrausers = 0;
our $encrypt_home = undef;
# Global variables we need later
my $existing_user = undef;
my $existing_group = undef;
my $new_name = undef;
my $make_group_also = 0;
my $home_dir = undef;
my $undohome = undef;
my $undouser = undef;
my $undogroup = undef;
my $shell = undef;
my $first_uid = undef;
my $last_uid = undef;
my $dir_mode = undef;
my $perm = undef;
our @names;
# Parse options, sanity checks
unless ( GetOptions ("quiet|q" => sub { $verbose = 0 },
"force-badname" => \$allow_badname,
"help|h" => sub { &usage(); exit RET_OK },
"version|v" => sub { &version(); exit RET_OK },
"system" => \$found_sys_opt,
"group" => \$found_group_opt,
"ingroup=s" => \$ingroup_name,
"home=s" => \$special_home,
"gecos=s" => \$new_gecos,
"shell=s" => \$special_shell,
"disabled-password" => sub { $ask_passwd = 0 },
"disabled-login" => sub { $disabled_login = 1; $ask_passwd = 0 },
"uid=i" => \$new_uid,
"firstuid=i" => \$new_firstuid,
"lastuid=i" => \$new_lastuid,
"gid=i" => \$new_gid,
"conf=s" => \$configfile,
"no-create-home" => \$no_create_home,
"encrypt-home" => \$encrypt_home,
"add_extra_groups" => \$add_extra_groups,
"extrausers" => \$use_extrausers,
"debug" => sub { $verbose = 2 } ) ) {
&usage();
exit RET_INVALID_CALL;
}
# everyone can issue "--help" and "--version", but only root can go on
dief (gtx("Only root may add a user or group to the system.\n")) if ($> != 0);
if( defined($configfile) ) { @defaults = ($configfile); }
# detect the right mode
my $action = $0 eq "addgroup" ? "addgroup" : "adduser";
if (defined($found_sys_opt)) {
$action = "addsysuser" if ($action eq "adduser");
$action = "addsysgroup" if ($action eq "addgroup");
}
# explicitly set PATH, because super (1) cleans up the path and makes adduser unusable;
# this is also a good idea for sudo (which doesn't clean up)
$ENV{"PATH"}="/bin:/usr/bin:/sbin:/usr/sbin";
$ENV{"IFS"}=" \t\n";
############################
# checks related to @names #
############################
while (defined(my $arg = shift(@ARGV))) {
push (@names, $arg);
}
if ( (! defined $names[0]) || length($names[0]) == 0 || @names > 2) {
dief (gtx("Only one or two names allowed.\n"));
}
if (@names == 2) { # must be addusertogroup
dief (gtx("Specify only one name in this mode.\n"))
if ($action eq "addsysuser" || $found_group_opt);
$action = "addusertogroup";
$existing_user = shift (@names);
$existing_group = shift (@names);
}
else { # 1 parameter, must be adduser
$new_name = shift (@names);
}
###################################
# check for consistent parameters #
###################################
if ($action ne "addgroup" &&
defined($found_group_opt) +defined($ingroup_name) +defined($new_gid) > 1 ) {
dief (gtx("The --group, --ingroup, and --gid options are mutually exclusive.\n"));
}
if ((defined($special_home)) && ($special_home !~ m+^/+ )) {
dief (gtx("The home dir must be an absolute path.\n"));
}
if (defined($special_home) && $verbose) {
printf gtx("Warning: The home dir %s you specified already exists.\n"),$special_home
if (!defined($no_create_home) && -d $special_home);
printf gtx("Warning: The home dir %s you specified can't be accessed: %s\n"), $special_home, $!
if (defined($no_create_home) && ! -d $special_home);
}
if ($found_group_opt) {
if ($action eq "addsysuser") {
$make_group_also = 1;
}
elsif ($found_sys_opt) {
$action = "addsysgroup";
}
else {
$action = "addgroup";
}
}
my $ecryptfs_setup_private;
if (defined($encrypt_home)) {
$ecryptfs_setup_private = &which('ecryptfs-setup-private');
}
$ENV{"VERBOSE"} = $verbose;
$ENV{"DEBUG"} = $verbose;
# preseed configuration data and then read the config file
preseed_config(\@defaults,\%config);
&checkname($new_name, $found_sys_opt) if defined $new_name;
$SIG{'INT'} = $SIG{'QUIT'} = $SIG{'HUP'} = 'handler';
#####
# OK, we've processed the arguments. $action equals one of the following,
# and the appropriate variables have been set:
#
# $action = "adduser"
# $new_name - the name of the new user.
# $ingroup_name | $new_gid - the group to add the user to
# $special_home, $new_uid, $new_gecos - optional overrides
# $action = "addgroup"
# $new_name - the name of the new group
# $new_gid - optional override
# $action = "addsysgroup"
# $new_name - the name of the new group
# $new_gid - optional override
# $action = "addsysuser"
# $new_name - the name of the new user
# $make_group_also | $ingroup_name | $new_gid | 0 - which group
# $special_home, $new_uid, $new_gecos - optional overrides
# $action = "addusertogroup"
# $existing_user - the user to be added
# $existing_group - the group to add her to
#####
#################
## addsysgroup ##
#################
if ($action eq "addsysgroup") {
# Check if requested group already exists and we can exit safely
my $ret = existing_group_ok($new_name, $new_gid);
if ($ret == 3) {
print STDERR "$0: " if $verbose;
printf STDERR (gtx("The group `%s' already exists as a system group. Exiting.\n"), $new_name) if $verbose;
exit RET_OK;
}
if ($ret == 1) {
print STDERR "$0: " if $verbose;
printf STDERR (gtx("The group `%s' already exists and is not a system group. Exiting.\n"), $new_name);
exit RET_OBJECT_ALREADY_EXISTS;
}
if ($ret == 2) {
print STDERR "$0: " if $verbose;
printf STDERR (gtx("The group `%s' already exists, but has a different GID. Exiting.\n"), $new_name);
exit RET_OBJECT_ALREADY_EXISTS;
}
dief (gtx("The GID `%s' is already in use.\n"),$new_gid)
if (defined($new_gid) && defined(getgrgid($new_gid)));
if (!defined($new_gid)) {
$new_gid = &first_avail_gid($config{"first_system_gid"},
$config{"last_system_gid"});
if ($new_gid == -1) {
print STDERR "$0: ";
printf STDERR gtx("No GID is available in the range %d-%d (FIRST_SYS_GID - LAST_SYS_GID).\n"),$config{"first_system_gid"},$config{"last_system_gid"};
dief (gtx("The group `%s' was not created.\n"),$new_name);
}
}
printf (gtx("Adding group `%s' (GID %d) ...\n"),$new_name,$new_gid) if $verbose;
&invalidate_nscd("group");
my $groupadd = &which('groupadd');
if ( ($use_extrausers) || ($config{"use_extrausers"}) ) {
&systemcall($groupadd, '--extrausers', '-g', $new_gid, $new_name);
} else {
&systemcall($groupadd, '-g', $new_gid, $new_name);
}
&invalidate_nscd("group");
print (gtx("Done.\n")) if $verbose;
exit RET_OK;
}
##############
## addgroup ##
##############
if ($action eq "addgroup") {
dief (gtx("The group `%s' already exists.\n"),$new_name)
if (defined getgrnam($new_name));
dief (gtx("The GID `%s' is already in use.\n"),$new_gid)
if (defined($new_gid) && defined(getgrgid($new_gid)));
if (!defined($new_gid)) {
$new_gid = &first_avail_gid($config{"first_gid"},
$config{"last_gid"});
if ($new_gid == -1) {
print STDERR "$0: ";
printf STDERR gtx("No GID is available in the range %d-%d (FIRST_GID - LAST_GID).\n"),$config{"first_gid"},$config{"last_gid"};
dief (gtx("The group `%s' was not created.\n"),$new_name);
}
}
printf (gtx("Adding group `%s' (GID %d) ...\n"),$new_name,$new_gid) if $verbose;
&invalidate_nscd("group");
my $groupadd = &which('groupadd');
if ( ($use_extrausers) || ($config{"use_extrausers"}) ) {
&systemcall($groupadd, '--extrausers', '-g', $new_gid, $new_name);
} else {
&systemcall($groupadd, '-g', $new_gid, $new_name);
}
&invalidate_nscd("group");
print (gtx("Done.\n")) if $verbose;
exit RET_OK;
}
####################
## addusertogroup ##
####################
if ($action eq "addusertogroup") {
dief (gtx("The user `%s' does not exist.\n"),$existing_user)
if (!defined getpwnam($existing_user));
dief (gtx("The group `%s' does not exist.\n"),$existing_group)
if (!defined getgrnam($existing_group));
if (&user_is_member($existing_user, $existing_group)) {
printf gtx("The user `%s' is already a member of `%s'.\n"),
$existing_user,$existing_group if $verbose;
exit RET_OK; # not really an error
}
printf gtx("Adding user `%s' to group `%s' ...\n"),$existing_user,$existing_group
if $verbose;
&invalidate_nscd();
my $gpasswd = &which('gpasswd');
if ( ($use_extrausers) || ($config{"use_extrausers"}) ) {
&systemcall($gpasswd, '--extrausers', '-a',$existing_user,$existing_group);
} else {
&systemcall($gpasswd, '-a',$existing_user,$existing_group);
}
&invalidate_nscd();
print (gtx("Done.\n")) if $verbose;
exit RET_OK;
}
################
## addsysuser ##
################
if ($action eq "addsysuser") {
if (existing_user_ok($new_name, $new_uid) == 1) {
# a user with this name already exists; it's a problem when it's not a system user
my $tmp_u = getpwnam($new_name);
if (($tmp_u >= $config{"first_system_uid"}) and ($tmp_u <= $config{"last_system_uid"})) {
printf (gtx("The system user `%s' already exists. Exiting.\n"), $new_name) if $verbose;
exit RET_OK
}
warnf (gtx("The user `%s' already exists, but is not a system user. Exiting.\n"), $new_name);
exit RET_OBJECT_ALREADY_EXISTS;
}
if (existing_user_ok($new_name, $new_uid) == 2) {
warnf (gtx("The user `%s' already exists with a different UID. Exiting.\n"), $new_name);
exit RET_OBJECT_ALREADY_EXISTS;
}
if (!$ingroup_name && !defined($new_gid) && !$make_group_also) {
$new_gid = $nogroup_id;
}
check_user_group(1);
if (!defined($new_uid) && $make_group_also) {
$new_uid = &first_avail_uid($config{"first_system_uid"},
$config{"last_system_uid"});
if ($new_uid == -1) {
print STDERR "$0: ";
printf STDERR gtx("No UID/GID pair is available in the range %d-%d (FIRST_SYS_UID - LAST_SYS_UID).\n"),$config{"first_system_uid"},$config{"last_system_uid"};
dief (gtx("The user `%s' was not created.\n"),$new_name);
}
$new_gid = &first_avail_gid($config{"first_system_gid"},
$config{"last_system_gid"});
$ingroup_name = $new_name;
}
elsif (!defined($new_uid) && !$make_group_also) {
$new_uid = &first_avail_uid($config{"first_system_uid"},
$config{"last_system_uid"});
if ($new_uid == -1) {
print STDERR "$0: ";
printf STDERR gtx("No UID is available in the range %d-%d (FIRST_SYS_UID - LAST_SYS_UID).\n"),$config{"first_system_uid"},$config{"last_system_uid"};
dief (gtx("The user `%s' was not created.\n"),$new_name);
}
if (defined($new_gid)) { $ingroup_name = getgrgid($new_gid); }
elsif ($ingroup_name) { $new_gid = getgrnam($ingroup_name); }
else { dief (gtx("Internal error")); }
}
else {
if (defined($new_gid)) { $ingroup_name = getgrgid($new_gid); }
elsif ($ingroup_name) { $new_gid = getgrnam($ingroup_name); }
elsif ($make_group_also){ $new_gid=$new_uid; $ingroup_name=$new_name; }
else { dief (gtx("Internal error")); }
}
printf (gtx("Adding system user `%s' (UID %d) ...\n"),$new_name,$new_uid) if $verbose;
&invalidate_nscd();
# if we reach this point, and the group does already exist, we can use it.
if ($make_group_also && !getgrnam($new_name)) {
printf (gtx("Adding new group `%s' (GID %d) ...\n"),$new_name,$new_gid) if $verbose;
$undogroup = $new_name;
my $groupadd = &which('groupadd');
if ( ($use_extrausers) || ($config{"use_extrausers"}) ) {
&systemcall($groupadd, '--extrausers', '-g', $new_gid, $new_name);
} else {
&systemcall($groupadd, '-g', $new_gid, $new_name);
}
&invalidate_nscd("group");
}
printf gtx("Adding new user `%s' (UID %d) with group `%s' ...\n"),$new_name,$new_uid,$ingroup_name
if $verbose;
$home_dir = $special_home || &homedir($new_name, $ingroup_name);
$shell = $special_shell || '/usr/sbin/nologin';
$undouser = $new_name;
my $useradd = &which('useradd');
if ( ($use_extrausers) || ($config{"use_extrausers"}) ) {
&systemcall($useradd, '--extrausers', '-d', $home_dir, '-g', $ingroup_name, '-s',
$shell, '-u', $new_uid, $new_name);
} else {
&systemcall($useradd, '-d', $home_dir, '-g', $ingroup_name, '-s',
$shell, '-u', $new_uid, $new_name);
}
if(!$disabled_login) {
my $usermod = &which('usermod');
&systemcall($usermod, '-p', '*', $new_name);
}
my $chage = &which('chage');
print "$chage -M 99999 $new_name\n" if ($verbose > 1);
# do _not_ use systemcall() here, since systemcall() dies on
# non-zero exit code and we need to do special handling here!
if (system($chage, '-M', '99999', $new_name)) {
if( ($?>>8) ne 15 ) {
&cleanup(sprintf((gtx("`%s' returned error code %d. Exiting.\n")), "$chage -M 99999 $new_name", $?>>8))
if ($?>>8);
&cleanup(sprintf((gtx("`%s' exited from signal %d. Exiting.\n")), "$chage -M 99999 $new_name", $?&255));
} else {
printf STDERR (gtx("%s failed with return code 15, shadow not enabled, password aging cannot be set. Continuing.\n"), $chage);
}
}
&invalidate_nscd();
if(defined($new_gecos)) {
&ch_gecos($new_gecos);
}
create_homedir (0);
exit RET_OK;
}
#############
## adduser ##
#############
if ($action eq "adduser") {
if (!$ingroup_name && !defined($new_gid)) {
if ($config{"usergroups"} =~ /yes/i) { $make_group_also = 1; }
else { $new_gid = $config{"users_gid"}; }
}
check_user_group(0);
$first_uid = $new_firstuid || $config{"first_uid"};
$last_uid = $new_lastuid || $config{"last_uid"};
printf (gtx("Adding user `%s' ...\n"),$new_name) if $verbose;
if (!defined($new_uid) && $make_group_also) {
$new_uid = &first_avail_uid($first_uid,
$last_uid);
if ($new_uid == -1) {
print STDERR "$0: ";
printf STDERR gtx("No UID/GID pair is available in the range %d-%d (FIRST_UID - LAST_UID).\n"),$first_uid,$last_uid;
dief (gtx("The user `%s' was not created.\n"),$new_name);
}
$new_gid = &first_avail_gid($config{"first_gid"},
$config{"last_gid"});
$ingroup_name = $new_name;
}
elsif (!defined($new_uid) && !$make_group_also) {
$new_uid = &first_avail_uid($first_uid,
$last_uid);
if ($new_uid == -1) {
print STDERR "$0: ";
printf STDERR gtx("No UID is available in the range %d-%d (FIRST_UID - LAST_UID).\n"),$config{"first_uid"},$config{"last_uid"};
dief (gtx("The user `%s' was not created.\n"),$new_name);
}
if (defined($new_gid)) { $ingroup_name = getgrgid($new_gid); }
elsif ($ingroup_name) { $new_gid = getgrnam($ingroup_name); }
else { dief (gtx("Internal error")); }
}
else {
if (defined($new_gid)) { $ingroup_name = getgrgid($new_gid); }
elsif ($ingroup_name) { $new_gid = getgrnam($ingroup_name); }
elsif ($make_group_also){ $new_gid=$new_uid; $ingroup_name=$new_name; }
else { dief (gtx("Internal error")); }
}
&invalidate_nscd();
if ($make_group_also) {
printf (gtx("Adding new group `%s' (%d) ...\n"),$new_name,$new_gid) if $verbose;
$undogroup = $new_name;
my $groupadd = &which('groupadd');
if ( ($use_extrausers) || ($config{"use_extrausers"}) ) {
&systemcall($groupadd, '--extrausers', '-g', $new_gid, $new_name);
} else {
&systemcall($groupadd, '-g', $new_gid, $new_name);
}
&invalidate_nscd();
}
printf gtx("Adding new user `%s' (%d) with group `%s' ...\n"),$new_name,$new_uid,$ingroup_name
if $verbose;
$home_dir = $special_home || &homedir($new_name, $ingroup_name);
$shell = $special_shell || $config{"dshell"};
$undouser = $new_name;
my $useradd = &which('useradd');
if ( ($use_extrausers) || ($config{"use_extrausers"}) ) {
&systemcall($useradd, '--extrausers', '-d', $home_dir, '-g', $ingroup_name, '-s',
$shell, '-u', $new_uid, $new_name);
} else {
&systemcall($useradd, '-d', $home_dir, '-g', $ingroup_name, '-s',
$shell, '-u', $new_uid, $new_name);
}
&invalidate_nscd();
create_homedir (1); # copy skeleton data
# useradd without -p has left the account disabled (password string is '!')
my $yesexpr = langinfo(YESEXPR());
if ($ask_passwd) {
for (;;) {
my $passwd = &which('passwd');
# do _not_ use systemcall() here, since systemcall() dies on
# non-zero exit code and we need to do special handling here!
system($passwd, $new_name);
my $ok = $?>>8;
if ($ok != 0) {
my $answer;
# hm, error, should we break now?
print (gtx("Permission denied\n")) if ($ok == 1);
print (gtx("invalid combination of options\n")) if ($ok == 2);
print (gtx("unexpected failure, nothing done\n")) if ($ok == 3);
print (gtx("unexpected failure, passwd file missing\n")) if ($ok == 4);
print (gtx("passwd file busy, try again\n")) if ($ok == 5);
print (gtx("invalid argument to option\n")) if ($ok == 6);
# Translators: [y/N] has to be replaced by values defined in your
# locale. You can see by running "locale noexpr" which regular
# expression will be checked to find positive answer.
print (gtx("Try again? [y/N] "));
chop ($answer=<STDIN>);
last if ($answer !~ m/$yesexpr/o);
}
else {
last; ## passwd ok
}
}
} else {
if(!$disabled_login) {
my $usermod = &which('usermod');
&systemcall($usermod, '-p', '*', $new_name);
}
}
if (defined($new_gecos)) {
&ch_gecos($new_gecos);
}
else {
my $noexpr = langinfo(NOEXPR());
for (;;) {
my $chfn = &which('chfn');
if ( ($use_extrausers) || ($config{"use_extrausers"}) ) {
&systemcall($chfn, '--extrausers', $new_name);
} else {
&systemcall($chfn, $new_name);
}
# Translators: [y/N] has to be replaced by values defined in your
# locale. You can see by running "locale yesexpr" which regular
# expression will be checked to find positive answer.
print (gtx("Is the information correct? [Y/n] "));
chop (my $answer=<STDIN>);
last if ($answer !~ m/$noexpr/o);
}
}
if ( ( $add_extra_groups || $config{"add_extra_groups"} ) && defined($config{"extra_groups"}) ) {
printf (gtx("Adding new user `%s' to extra groups ...\n"), $new_name);
foreach my $newgrp ( split ' ', $config{"extra_groups"} ) {
if (!defined getgrnam($newgrp)) {
warnf (gtx("The group `%s' does not exist.\n"),$newgrp);
next;
}
if (&user_is_member($new_name, $newgrp)) {
printf gtx("The user `%s' is already a member of `%s'.\n"),
$new_name,$newgrp if $verbose;
next;
}
printf gtx("Adding user `%s' to group `%s' ...\n"),$new_name,$newgrp
if $verbose;
&invalidate_nscd();
my $gpasswd = &which('gpasswd');
if ( ($use_extrausers) || ($config{"use_extrausers"}) ) {
&systemcall($gpasswd, '--extrausers', '-M',
join(',', get_group_members($newgrp), $new_name),
$newgrp);
} else {
&systemcall($gpasswd, '-M',
join(',', get_group_members($newgrp), $new_name),
$newgrp);
}
&invalidate_nscd();
}
}
if ($config{"quotauser"}) {
printf (gtx("Setting quota for user `%s' to values of user `%s' ...\n"), $new_name, $config{quotauser});
my $edquota = &which('edquota');
&systemcall($edquota, '-p', $config{quotauser}, $new_name);
}
&systemcall('/usr/local/sbin/adduser.local', $new_name, $new_uid,
$new_gid, $home_dir) if (-x "/usr/local/sbin/adduser.local");
exit RET_OK;
}
#
# we never go here
#
# calculate home directory
sub homedir {
my $dir = $config{"dhome"};
$dir .= '/' . $_[1] if ($config{"grouphomes"} =~ /yes/i);
$dir .= '/' . substr($_[0],0,1) if ($config{"letterhomes"} =~ /yes/i);
$dir .= '/' . $_[0];
return $dir;
}
# create_homedir -- create the homedirectory
# parameter
# 1: $copy_skeleton:
# if 0 -> don't copy the skeleton data
# if 1 -> copy the files in /etc/skel to the newly created home directory
# return values:
# none
sub create_homedir {
my ($copy_skeleton) = @_;
if ($no_create_home) {
printf gtx("Not creating home directory `%s'.\n"), $home_dir if $verbose;
}
elsif (-e $home_dir) {
printf gtx("The home directory `%s' already exists. Not copying from `%s'.\n"),
$home_dir,$config{skel} if $verbose && !$no_create_home;
my @homedir_stat = stat($home_dir);
my $home_uid = $homedir_stat[4];
my $home_gid = $homedir_stat[5];
if (($home_uid != $new_uid) || ($home_gid != $new_gid)) {
warnf gtx("Warning: The home directory `%s' does not belong to the user you are currently creating.\n"), $home_dir;
}
undef @homedir_stat; undef $home_uid; undef $home_gid;
}
else {
printf gtx("Creating home directory `%s' ...\n"),$home_dir if $verbose;
$undohome = $home_dir;
&mktree($home_dir) || &cleanup(sprintf(gtx("Couldn't create home directory `%s': %s.\n"), $home_dir, $!));
chown($new_uid, $new_gid, $home_dir)
|| &cleanup("chown $new_uid:$new_gid $home_dir: $!\n");
$dir_mode = get_dir_mode($make_group_also);
chmod ($dir_mode, $home_dir) ||
&cleanup("chmod $dir_mode $home_dir: $!\n");
if ($action eq "adduser") {
# Mute the command
system('sh' => ( '-c' => '"$@" >/dev/null 2>&1', '--', '/usr/sbin/zsysctl', 'userdata', 'create', $new_name, $home_dir,));
chown($new_uid, $new_gid, $home_dir)
|| &cleanup("chown $new_uid:$new_gid $home_dir: $!\n");
$dir_mode = get_dir_mode($make_group_also);
chmod ($dir_mode, $home_dir) ||
&cleanup("chmod $dir_mode $home_dir: $!\n");
}
if (defined($encrypt_home)) {
printf gtx("Setting up encryption ...\n") if $verbose;
&systemcall($ecryptfs_setup_private, '-b', '-u', $new_name);
}
if ($config{"skel"} && $copy_skeleton) {
printf gtx("Copying files from `%s' ...\n"),$config{skel} if $verbose;
open(my $FIND, "cd $config{skel}; find . -print |")
|| &cleanup(sprintf(gtx("fork for `find' failed: %s\n"), $!));
while (<$FIND>) {
chop;
next if ($_ eq ".");
next if ($_ =~ qr/$config{skel_ignore_regex}/ );
©_to_dir($config{"skel"}, $_, $home_dir, $new_uid,
$new_gid, ($config{"setgid_home"} =~ /yes/i));
}
}
if (defined($encrypt_home)) {
&systemcall("/bin/umount", $home_dir);
}
}
}
# mktree: create a directory and all parent directories, we don't care about the rights and so on
# parameters:
# tree: the path
# return values:
# none
sub mktree {
my($tree) = @_;
my($done, @path);
my $default_dir_mode = 0755;
$tree =~ s:^/*(.*)/*$:$1:; # chop off leading & trailing slashes
@path = split(/\//, $tree);
$done = "";
while (@path) {
$done .= '/' . shift(@path);
-d $done || mkdir($done, $default_dir_mode) || return 0;
}
return 1;
}
# existing_user_ok: check if there's already a user present on the system which satisfies the requirements
# parameter:
# new_name: the name of the user to check
# new_uid : the UID of the user
# return values:
# 0 if the the user doesn't exist
# 1 if the user already exists with the specified uid (or $new_uid wasn't specified)
# 2 if the user already exists, but $new_uid doesn't matches its uid
sub existing_user_ok {
my($new_name,$new_uid) = @_;
my ($dummy1,$dummy2,$uid);
if (($dummy1,$dummy2,$uid) = getpwnam($new_name)) {
if( defined($new_uid) && $uid == $new_uid ) {
return 1;
}
if (! defined($new_uid)) {
return 1;
}
# TODO: do we really need this code? Range check shouldn't performed here
if( $uid >= $config{"first_system_uid"} &&
$uid <= $config{"last_system_uid" } ) {
return 2;
}
} else {
return 0;
}
}
# existing_group_ok: check if there's already a group which satiesfies the requirements
# parameter:
# new_name: the name of the group
# new_gid : the UID of the group
# return values:
# 0 if the group doesn't exist
# 1 if the group already exists with the specified gid (or $new_gid wasn't specified)
# 2 if the group already exists, but $new_gid doesn't match its gid
# 3 if the group already exists inside the system range
sub existing_group_ok {
my($new_name,$new_gid) = @_;
my ($dummy1,$dummy2,$gid);
if (($dummy1,$dummy2,$gid) = getgrnam($new_name)) {
# TODO: is this check required? There shouldn't be any gid outside of our allowed range anyways ...
if( $gid >= $config{"first_system_gid"} &&
$gid <= $config{"last_system_gid" } ) {
return 3;
}
if (! defined($new_gid)) {
return 1;
}
if ($gid == $new_gid) {
return 1;
} else {
return 2;
}
} else {
return 0;
}
}
# check_user_group: ???
# parameters:
# system: 0 if the user isn't a system user, 1 otherwise
# return values:
#
sub check_user_group {
my ($system) = @_;
if( !$system || !existing_user_ok($new_name, $new_uid) ) {
if( defined getpwnam($new_name) ) {
if( $system ) {
dief (gtx("The user `%s' already exists, and is not a system user.\n"),$new_name);
} else {
dief (gtx("The user `%s' already exists.\n"),$new_name);
}
}
dief (gtx("The UID %d is already in use.\n"),$new_uid)
if (defined($new_uid) && getpwuid($new_uid));
}
if ($make_group_also) {
if( !$system || !existing_group_ok($new_name, $new_uid) ) {
dief (gtx("The group `%s' already exists.\n"),$new_name)
if (defined getgrnam($new_name));
dief (gtx("The GID %d is already in use.\n"),$new_uid)
if (defined($new_uid) && defined(getgrgid($new_uid)));
}
}
else {
dief (gtx("The group `%s' does not exist.\n"),$ingroup_name)
if ($ingroup_name && !defined(getgrnam($ingroup_name)));
dief (gtx("The GID %d does not exist.\n"),$new_gid)
if (defined($new_gid) && !defined(getgrgid($new_gid)));
}
}
# copy_to_dir :
# parameters:
# fromdir
# file
# todir
# newi
# newg
# sgiddir
# return values:
# none
sub copy_to_dir {
my($fromdir, $file, $todir, $newu, $newg, $sgiddir) = @_;
if (-l "$fromdir/$file") {
my $target=readlink("$fromdir/$file") or &cleanup("readlink: $!\n");
my $curgid="$)";
my $curuid="$>";
my $error="";
$)="$newg";
$>="$newu";
symlink("$target", "$todir/$file") or $error="$!";
$>="$curuid";
$)="$curgid";
if( "$error" ne "" ) {
&cleanup("symlink: $!\n");
}
return;
}
elsif (-f "$fromdir/$file") {
open (FILE, "$fromdir/$file") || &cleanup("open $fromdir/$file: $!");
open (NEWFILE, ">$todir/$file") || &cleanup("open >$todir/$file: $!");
(print NEWFILE <FILE>) || &cleanup("print $todir/$file: $!");
close FILE;
close(NEWFILE) || &cleanup("close $todir/$file ");
}
elsif (-d "$fromdir/$file") {
mkdir("$todir/$file", 700) || &cleanup("mkdir: $!");
}
else {
&cleanup(sprintf((gtx("Cannot deal with %s.\nIt is not a dir, file, or symlink.\n")), "$fromdir/$file"));
}
chown($newu, $newg, "$todir/$file")
|| &cleanup("chown $newu:$newg $todir/$file: $!\n");
$perm = (stat("$fromdir/$file"))[2] & 07777;
$perm |= 02000 if (-d "$fromdir/$file" && ($perm & 010) && $sgiddir);
chmod($perm, "$todir/$file") || &cleanup("chmod $todir/$file: $!\n");
}
# checkname: perform some sanity checks
# parameters:
# name: the name to check
# system: 0 if the user isn't a system user, 1 otherwise
# return values:
# none (exits on error)
sub checkname {
my ($name, $system) = @_;
if ($name !~ /^[_.A-Za-z0-9][-\@_.A-Za-z0-9]*\$?$/) {
printf STDERR
(gtx("%s: To avoid problems, the username should consist only of
letters, digits, underscores, periods, at signs and dashes, and not start with
a dash (as defined by IEEE Std 1003.1-2001). For compatibility with Samba
machine accounts \$ is also supported at the end of the username\n"), $0);
exit RET_INVALID_CHARS_IN_NAME;;
}
if ($system
? $name !~ qr/$config{"name_regex_system"}/
: $name !~ qr/$config{"name_regex"}/) {
if ($allow_badname) {
print (gtx("Allowing use of questionable username.\n")) if ($verbose);
}
else {
printf STDERR
(gtx("%s: Please enter a username matching the regular expression configured
via the NAME_REGEX[_SYSTEM] configuration variable. Use the `--force-badname'
option to relax this check or reconfigure NAME_REGEX.\n"), $0);
exit RET_INVALID_CHARS_IN_NAME;
}
}
}
# first_avail_uid: return the first available uid in given range
# parameters:
# min, max: the range
# return values:
# -1 if no free uid is available
# otherwise the choosen uid
sub first_avail_uid {
my ($min, $max) = @_;
printf (gtx("Selecting UID from range %d to %d ...\n"),$min,$max) if ($verbose > 1);
my $t = $min;
while ($t <= $max) {
return $t if (!defined(getpwuid($t)));
$t++;
}
return -1; # nothing available
}
# first_avail_gid: return the first available gid in given range
# parameters:
# min, max: the range
# return values:
# -1 if no free gid is available
# otherwise the choosen gid
sub first_avail_gid {
my ($min, $max) = @_;
printf (gtx("Selecting GID from range %d to %d ...\n"),$min,$max) if ($verbose > 1);
my $t = $min;
while ($t <= $max) {
return $t if (!defined(getgrgid($t)));
$t++;
}
return -1; # nothing available
}
sub ch_gecos {
my $chfn = &which('chfn');
my $gecos = shift;
if($gecos =~ /,/)
{
my($gecos_name,$gecos_room,$gecos_work,$gecos_home,$gecos_other)
= split(/,/,$gecos);
if ( ($use_extrausers) || ($config{"use_extrausers"}) ) {
&systemcall($chfn, '--extrausers', '-f', $gecos_name, '-r', $gecos_room, $new_name);
&systemcall($chfn,'--extrausers','-w',$gecos_work,$new_name)
if(defined($gecos_work));
&systemcall($chfn,'--extrausers','-h',$gecos_home,$new_name)
if(defined($gecos_home));
&systemcall($chfn,'--extrausers','-o',$gecos_other,$new_name)
if(defined($gecos_other));
} else {
&systemcall($chfn, '-f', $gecos_name, '-r', $gecos_room, $new_name);
&systemcall($chfn,'-w',$gecos_work,$new_name)
if(defined($gecos_work));
&systemcall($chfn,'-h',$gecos_home,$new_name)
if(defined($gecos_home));
&systemcall($chfn,'-o',$gecos_other,$new_name)
if(defined($gecos_other));
}
}
else
{
if ( ($use_extrausers) || ($config{"use_extrausers"}) ) {
&systemcall($chfn, '--extrausers', '-f', $gecos, $new_name);
} else {
&systemcall($chfn, '-f', $gecos, $new_name);
}
}
}
# user is member of group?
sub user_is_member {
my($user, $group) = @_;
for (split(/ /, (getgrnam($group))[3])) {
return 1 if ($user eq $_);
}
return 0;
}
sub cleanup {
my ($msg) = @_;
printf (gtx("Stopped: %s\n"),$msg);
if ($undohome) {
printf (gtx("Removing directory `%s' ...\n"),$undohome);
&systemcall('rm', '-rf', $undohome);
}
if ($undouser) {
printf (gtx("Removing user `%s' ...\n"),$undouser);
&systemcall('userdel', $undouser);
}
if ($undogroup) {
printf (gtx("Removing group `%s' ...\n"),$undogroup);
&systemcall('groupdel', $undogroup);
}
# do we need to invalidate the nscd cache here, too?
exit RET_ADDUSER_ABORTED;
}
sub handler {
my($sig) = @_;
# Translators: the variable %s is INT, QUIT, or HUP.
# Please do not insert a space character between SIG and %s.
&cleanup(sprintf(gtx("Caught a SIG%s.\n"), $sig));
}
sub version {
printf (gtx("adduser version %s\n\n"), $version);
print gtx("Adds a user or group to the system.
Copyright (C) 1997, 1998, 1999 Guy Maor <maor\@debian.org>
Copyright (C) 1995 Ian Murdock <imurdock\@gnu.ai.mit.edu>,
Ted Hajek <tedhajek\@boombox.micro.umn.edu>
\n");
print gtx(
"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.
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
General Public License, /usr/share/common-licenses/GPL, for more details.
");
}
sub usage {
printf gtx(
"adduser [--home DIR] [--shell SHELL] [--no-create-home] [--uid ID]
[--firstuid ID] [--lastuid ID] [--gecos GECOS] [--ingroup GROUP | --gid ID]
[--disabled-password] [--disabled-login] [--add_extra_groups]
[--encrypt-home] USER
Add a normal user
adduser --system [--home DIR] [--shell SHELL] [--no-create-home] [--uid ID]
[--gecos GECOS] [--group | --ingroup GROUP | --gid ID] [--disabled-password]
[--disabled-login] [--add_extra_groups] USER
Add a system user
adduser --group [--gid ID] GROUP
addgroup [--gid ID] GROUP
Add a user group
addgroup --system [--gid ID] GROUP
Add a system group
adduser USER GROUP
Add an existing user to an existing group
general options:
--quiet | -q don't give process information to stdout
--force-badname allow usernames which do not match the
NAME_REGEX[_SYSTEM] configuration variable
--extrausers uses extra users as the database
--help | -h usage message
--version | -v version number and copyright
--conf | -c FILE use FILE as configuration file\n\n");
}
sub get_dir_mode
{
my $setgid = shift;
# no longer make home directories setgid per default (closes: #64806)
$setgid = 0 unless $config{"setgid_home"} =~ /yes/i;
my $dir_mode = $config{"dir_mode"};
if(!defined($dir_mode) || ! ($dir_mode =~ /[0-7]{3}/ ||
$dir_mode =~ /[0-7]{4}/))
{
$dir_mode = $setgid ? 2755 : 0755;
}
else
{
$dir_mode = $config{"dir_mode"};
if($setgid && (length($dir_mode) == 3 || $dir_mode =~ /^[0-1|4-5][0-7]{3}$/))
{
$dir_mode += 2000;
}
}
return oct($dir_mode);
}
# Local Variables:
# mode:cperl
# cperl-indent-level:4
# End:
# vim:set ai et sts=4 sw=4 tw=0: