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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙ#! /usr/bin/perl # Copyright (C) 2000 Roland Bauerschmidt # # Based on the Debian "adduser" utility developed by: # Guy Maor # Ted Hajek # Ian A. Murdock # # 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: # # Free Software Foundation # 51 Franklin Street, Fifth Floor # Boston, MA 02110 # USA use strict; use warnings; use Getopt::Long; use Debian::AdduserCommon; my $version = "3.134"; my $install_more_packages; BEGIN { local $ENV{PERL_DL_NONLAZY}=1; eval 'use File::Find'; if ($@) { $install_more_packages = 1; } #no warnings "File::Find"; eval 'use File::Temp'; if ($@) { $install_more_packages = 1; } } BEGIN { eval 'use Locale::gettext'; if ($@) { *gettext = sub { shift }; *textdomain = sub { "" }; *LC_MESSAGES = sub { 5 }; } eval { require POSIX; import POSIX qw(setlocale); }; if ($@) { *setlocale = sub { return 1 }; } } setlocale(LC_MESSAGES, ""); textdomain("adduser"); my $action = $0 =~ /delgroup$/ ? "delgroup" : "deluser"; our $verbose = 1; my %pconfig = (); my %config = (); my @configfiles; my @defaults; my $no_preserve_root; unless ( GetOptions ( "quiet|q" => sub {$verbose = 0; }, "debug" => sub {$verbose = 2; }, "verbose" => sub {$verbose = 2; }, "version|v" => sub { &version(); exit 0; }, "help|h" => sub { &usage(); exit 0;}, "group" => sub { $action = "delgroup";}, "conf|c=s" => \@configfiles, "system" => \$pconfig{"system"}, "only-if-empty" => \$pconfig{"only_if_empty"}, "remove-home" => \$pconfig{"remove_home"}, "remove-all-files" => \$pconfig{"remove_all_files"}, "backup" => \$pconfig{"backup"}, "backup-to=s" => \$pconfig{"backup_to"}, "backup-suffix=s" => \$pconfig{"backup_suffix"}, "no-preserve-root" => \$no_preserve_root ) ) { &usage; exit 1; } # everyone can issue "--help" and "--version", but only root can go on dief (gtx("Only root may remove a user or group from the system.\n")) if ($> != 0); if (!@configfiles) { @defaults = ("/etc/adduser.conf", "/etc/deluser.conf"); } else { @defaults = (@configfiles); } # explicitly set PATH, because super (1) cleans up the path and makes deluser unusable; # this is also a good idea for sudo (which doesn't clean up) $ENV{"PATH"}="/bin:/usr/bin:/sbin:/usr/sbin"; my @names = (); my ($user,$group); ###################### # handling of @names # ###################### while (defined(my $arg = shift(@ARGV))) { if (defined($names[0]) && $arg =~ /^--/) { dief (gtx("No options allowed after names.\n")); } else { # it's a username push (@names, $arg); } } if(@names == 0) { if($action eq "delgroup") { print (gtx("Enter a group name to remove: ")); } else { print (gtx("Enter a user name to remove: ")); } chomp(my $answer=); push(@names, $answer); } if (length($names[0]) == 0 || @names > 2) { dief (gtx("Only one or two names allowed.\n")); } if(@names == 2) { # must be deluserfromgroup $action = "deluserfromgroup"; $user = shift(@names); $group = shift(@names); } else { if($action eq "delgroup") { $group = shift(@names); } else { $user = shift(@names); } } undef(@names); $ENV{"VERBOSE"} = $verbose; $ENV{"DEBUG"} = $verbose; ########################################################## # (1) preseed the config # (2) read the default /etc/adduser.conf configuration. # (3) read the default /etc/deluser.conf configuration. # (4) process commmand line settings # last match wins ########################################################## preseed_config (\@defaults,\%config); foreach(keys(%pconfig)) { $config{$_} = $pconfig{$_} if ($pconfig{$_}); } if (($config{remove_home} || $config{remove_all_files} || $config{backup}) && ($install_more_packages)) { fail (8, gtx("In order to use the --remove-home, --remove-all-files, and --backup features, you need to install the `perl' package. To accomplish that, run apt-get install perl.\n")); } my ($pw_uid, $pw_gid, $pw_homedir, $gr_gid, $maingroup); if(defined($user)) { my @passwd = getpwnam($user); $pw_uid = $passwd[2]; $pw_gid = $passwd[3]; $pw_homedir = $passwd[7]; $maingroup = $pw_gid ? getgrgid($pw_gid) : ""; } if(defined($group)) { #($gr_name,$gr_passwd,$gr_gid,$gr_members) = getgrnam($group); my @group = getgrnam($group); $gr_gid = $group[2]; } # arguments are processed: # # $action = "deluser" # $user name of the user to remove # # $action = "delgroup" # $group name of the group to remove # # $action = "deluserfromgroup" # $user the user to be remove # $group the group to remove him/her from if($action eq "deluser") { my($dummy1,$dummy2,$uid); # Don't allow a non-system user to be deleted when --system is given # Also, "user does not exist" is only a warning with --system, but an # error without --system. if( $config{"system"} ) { if( ($dummy1,$dummy2,$uid) = getpwnam($user) ) { if ( ($uid < $config{"first_system_uid"} || $uid > $config{"last_system_uid" } ) ) { warnf (gtx("The user `%s' is not a system user. Exiting.\n"), $user) if $verbose; exit 1; } } else { warnf (gtx("The user `%s' does not exist, but --system was given. Exiting.\n"), $user) if $verbose; exit 0; } } unless(exist_user($user)) { fail (2,gtx("The user `%s' does not exist.\n"),$user); } # Warn in any case if you want to remove the root account if ((defined($pw_uid)) && ($pw_uid == 0) && (!defined($no_preserve_root))) { printf (gtx("WARNING: You are just about to delete the root account (uid 0)\n")); printf (gtx("Usually this is never required as it may render the whole system unusable\n")); printf (gtx("If you really want this, call deluser with parameter --no-preserve-root\n")); printf (gtx("Stopping now without having performed any action\n")); exit 9; } # consistency check # if --backup-to is specified, --backup should be set too if ($pconfig{"backup_to"}) { $config{"backup"} = 1; } if($config{"remove_home"} || $config{"remove_all_files"}) { s_print (gtx("Looking for files to backup/remove ...\n")); my @mountpoints; my $exclude_fstypes = $config{"exclude_fstypes"}; open(MOUNT, '/proc/mounts') || fail (4 ,gtx("failed to open /proc/mounts: %s\n", $!)); while () { my @temparray = split; my ($fstype, $fname) = ($temparray[2], $temparray[1]); next if $fname eq '/'; next if $fname eq '/home'; push @mountpoints,$fname if ($fstype =~ /$exclude_fstypes/); } close(MOUNT) or dief (gtx("failed to close /proc/mounts: %s\n",$!)); my(@files,@dirs); if($config{"remove_home"}) { # collect all files in user home sub home_match { push(@files, $File::Find::name) if(-f $File::Find::name || -l $File::Find::name); push(@dirs, $File::Find::name) if(-d $File::Find::name); } # sub home_match File::Find::find({wanted => \&home_match, untaint => 1, no_chdir => 1}, $pw_homedir) if(-d "$pw_homedir"); push(@files, "/var/mail/$user") if(-e "/var/mail/$user"); } if ($config{"remove_all_files"}) { # collect all files on system belonging to that user sub find_match { my ($dev,$ino,$mode,$nlink,$uid,$gid) = lstat; foreach my $mount (@mountpoints) { if( $File::Find::name eq $mount ) { s_printf (gtx("Not backing up/removing `%s', it is a mount point.\n"),$File::Find::name) if ($verbose > 1); $File::Find::prune=1; return; } } foreach my $re ( split ' ', $config{"no_del_paths"} ) { if( $File::Find::name =~ qr/$re/ ) { s_printf (gtx("Not backing up/removing `%s', it matches %s.\n"),$File::Find::name,$re) if ($verbose > 1); $File::Find::prune=1; return; } } (defined($uid) && ($uid == $pw_uid)) && ( (-f $File::Find::name && push(@files, $File::Find::name)) || (-l $File::Find::name && push(@files, $File::Find::name)) || (-d $File::Find::name && push(@dirs, $File::Find::name)) || (-S $File::Find::name && push(@files, $File::Find::name)) || (-p $File::Find::name && push(@files, $File::Find::name)) ); if ( -b $File::Find::name || -c $File::Find::name ) { warnf (gtx("Cannot handle special file %s\n"),$File::Find::name); } } # sub find_match File::Find::find({wanted => \&find_match, untaint => 1, no_chdir => 1}, '/'); } if($config{"backup"}) { s_printf (gtx("Backing up files to be removed to %s ...\n"),$config{"backup_to"}); my $filesfile = new File::Temp(TEMPLATE=>"deluser.XXXXX", DIR=>"/tmp"); my $filesfilename = $filesfile->filename; my $backup_name = $config{"backup_to"} . "/$user.tar"; print $filesfile join("\n", map { s/^\///r } @files); $filesfile->close(); my $tar = &which('tar'); &check_backup_suffix(); $backup_name .= $config{'backup_suffix'}; print "backup_name = $backup_name\n"; &systemcall($tar, "--directory", "/", "--auto-compress", "-cf", $backup_name, "--files-from", $filesfilename); chmod 0600, $backup_name; my $rootid = 0; chown $rootid, $rootid, $backup_name; unlink($filesfilename); } if(@files || @dirs) { s_print (gtx("Removing files ...\n")); unlink(@files) if(@files); foreach(reverse(sort(@dirs))) { rmdir unless /^$config{dhome}$/ || /^\/$/; } } } if (-x '/usr/bin/crontab') { s_print(gtx("Removing crontab ...\n")); if (&systemcall_silent('/usr/bin/crontab', '-u', $user, '-l') == 0) { &systemcall_or_warn('/usr/bin/crontab', '-u', $user, '-r'); } } else { warnf(gtx("`%s' not executed. Skipping crontab removal. Package `cron' required.\n"), '/usr/bin/crontab'); } s_printf(gtx("Removing user `%s' ...\n"), $user); acquire_lock(); &systemcall('/usr/sbin/userdel', $user); release_lock(); &systemcall('/usr/local/sbin/deluser.local', $user, $pw_uid, $pw_gid, $pw_homedir) if (-x "/usr/local/sbin/deluser.local"); s_print(gtx("Done.\n")); exit 0; } if ($action eq 'delgroup') { unless (exist_group($group)) { warnf (gtx("The group `%s' does not exist.\n"), $group) if $verbose; exit(0) if $config{'system'}; exit(3); } my($dummy,$gid,$members); if( !(($dummy, $dummy, $gid, $members ) = getgrnam($group)) ) { fail (4 ,gtx("getgrnam `%s' failed. This shouldn't happen.\n"), $group); } if( $config{"system"} && ($gid < $config{"first_system_gid"} || $gid > $config{"last_system_gid" } )) { warnf (gtx("The group `%s' is not a system group. Exiting.\n"), $group) if $verbose; exit 3; } if( $config{"only_if_empty"} && $members ne "") { fail (5, gtx("The group `%s' is not empty!\n"),$group); } # groupdel will error out if there are users left that # have $group as primary group. We are not checking this # ourself since this would mean enumerating all users. s_printf (gtx("Removing group `%s' ...\n"),$group); my $groupdel = &which('groupdel'); acquire_lock(); &systemcall($groupdel,$group); release_lock(); s_print (gtx("Done.\n")); exit 0; } if($action eq 'deluserfromgroup') { unless(exist_user($user)) { fail (2, gtx("The user `%s' does not exist.\n"),$user); } unless(exist_group($group)) { fail (3, gtx("The group `%s' does not exist.\n"),$group); } if($maingroup eq $group) { fail (7, gtx("You may not remove the user from their primary group.\n")); } my $is_member; my @members; foreach my $member (get_group_members($group)) { if ($member eq $user) { $is_member = 1; next; } push @members, $member; } unless($is_member) { fail (6, gtx("The user `%s' is not a member of group `%s'.\n"),$user,$group); } s_printf (gtx("Removing user `%s' from group `%s' ...\n"),$user,$group); acquire_lock(); &systemcall('/usr/bin/gpasswd', '-M', join(',', @members), $group); release_lock(); s_print (gtx("Done.\n")); } ###### sub fail { my ($errorcode, $format, @args) = @_; warnf "$format",@args; exit $errorcode; } sub version { printf (gtx("deluser version %s\n\n"), $version); print gtx("Removes users and groups from the system. For detailed copyright information, please refer to /usr/share/doc/adduser/copyright. \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( "deluser [--system] [--remove-home] [--remove-all-files] [--backup] [--backup-to dir] [--backup-suffix str] [--conf file] [--quiet] [--verbose] [--debug] user remove a normal user from the system deluser --group [--system] [--only-if-empty] [--conf file] [--quiet] [--verbose] [--debug] group delgroup [--system] [--only-if-empty] [--conf file] [--quiet] [--verbose] [--debug] group remove a group from the system deluser [--conf file] [--quiet] [--verbose] [--debug] user group remove the user from a group\n"); } sub exist_user { my $exist_user = shift; return(defined getpwnam($exist_user)); } sub exist_group { my $exist_group = shift; return(defined getgrnam($exist_group)); } sub check_backup_suffix { my $tar = &which('tar'); my $suffix = $config{'backup_suffix'} || 'gz'; if ($suffix !~ /^\./) { $suffix = ".$suffix"; } my $filename = '/tmp/deluser-check.tar'; my $testfile = 'usr/sbin/deluser'; &systemcall_silent_error($tar, '--auto-compress', '--directory', '/', '-cf', $filename.$suffix, $testfile); if ($?) { # compressor recognized, not available warnf gtx("Backup suffix %s unavailable, using gzip.\n"), $suffix; $suffix = '.gz'; } else { # no error, check if compressed &systemcall_silent($tar, '--directory', '/', '-cf', $filename, $testfile); my @zstat = stat($filename.$suffix); my @ustat = stat($filename); unlink($filename, $filename.$suffix); if ($zstat[7] == $ustat[7]) { warnf gtx("Backup suffix %s unavailable, using gzip.\n"), $suffix; $suffix = '.gz'; } } $config{'backup_suffix'} = $suffix; } # vim: tabstop=4 shiftwidth=4 expandtab