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#!/usr/local/cpanel/3rdparty/bin/perl # cpanel - scripts/initacls Copyright 2022 cPanel, L.L.C. # All rights reserved. # copyright@cpanel.net http://cpanel.net # This code is subject to the cPanel license. Unauthorized copying is prohibited package Cpanel::Script::Initacls; use cPstrict; use Cpanel::Binaries (); use Cpanel::SafeRun::Simple (); use Cpanel::SafeRun::Errors (); use Cpanel::Config::CpConfGuard (); use Cpanel::Logger (); use Cpanel::OSSys (); use Cpanel::SafeFile (); use Cpanel::TempFile (); our $aclsonfs = 0; our $fstab = "/etc/fstab"; our $fileprotect_touch = '/var/cpanel/fileprotect'; my $logger; exit main() unless caller(); sub main { $logger = Cpanel::Logger->new(); my ( $system, undef, $release ) = Cpanel::OSSys::uname(); my $mount_bin = Cpanel::Binaries::path('mount'); my $mount = Cpanel::SafeRun::Simple::saferun($mount_bin); chomp($mount); if ( $mount =~ /acl/ ) { $aclsonfs = 1; } unless ( -x Cpanel::Binaries::path('setfacl') ) { acldeath("Unable to locate setfacl: your distribution may not support acls\n"); } $release =~ /^(\d+\.\d+)/; my $nversion = $1; if ( $system =~ /linux/i && $nversion < 2.6 ) { acldeath("You must be running at least a 2.6 kernel to use this script."); } setuplinuxfstab(); acltestandsetup(); return 0; } sub setuplinuxfstab () { my $mount_bin = Cpanel::Binaries::path('mount'); #Check if the system is XFS (we only support XFS and ext3/4 as of this writing) my $is_xfs = Cpanel::SafeRun::Errors::saferunallerrors( $mount_bin, '-l' ); chomp $is_xfs; if ( $is_xfs =~ m/on \/ type xfs/i ) { print "XFS requires no mount alterations to enable ACLs, skipping...\n"; return 1; } if ( !$aclsonfs ) { my $acltest = Cpanel::SafeRun::Errors::saferunallerrors( $mount_bin, "-o", "remount,acl", "/" ); chomp($acltest); if ( $acltest ne "" ) { acldeath("System error: $acltest when testing for acl support. Your kernel may not support POSIX acls\n"); } } my $modtab = 0; my (@FSTAB); my (@REMOUNT); local $| = 1; my $fstablock = Cpanel::SafeFile::safeopen( \*FT, "+<", $fstab ); if ( !$fstablock ) { $logger->die("Could not edit $fstab"); } while (<FT>) { chomp(); if ( !/^[\s\t]*[\#\;]+/ ) { my (@FSLINE) = split( /[\s\t]+/, $_ ); my @OPTS = $FSLINE[3] ? split( /\,/, $FSLINE[3] ) : (); if ( ( $FSLINE[2] && $FSLINE[2] =~ /^ext\d+$/ ) && !grep( /^acl$/, @OPTS ) ) { push( @OPTS, 'acl' ); $FSLINE[3] = join( ",", @OPTS ); push( @FSTAB, join( "\t", @FSLINE ) ); push( @REMOUNT, $FSLINE[0] ); $modtab = 1; } else { push( @FSTAB, $_ ); } } else { push( @FSTAB, $_ ); } } if ($modtab) { seek( FT, 0, 0 ); print FT join( "\n", @FSTAB ) . "\n"; truncate( FT, tell(FT) ); } foreach (@REMOUNT) { my $res = Cpanel::SafeRun::Errors::saferunallerrors( $mount_bin, '-o', 'remount', $_ ); chomp $res; acldeath("System error: $res could not remount $_ with ACLs enabled!") if $res; } return Cpanel::SafeFile::safeclose( \*FT, $fstablock ); } sub acltestandsetup () { my $cfiler = Cpanel::TempFile->new(); my $randfile = $cfiler->file(); open( my $ACLTESTFILE, ">", $randfile ) or die("Couldn't open ACL test file $randfile for writing!"); close($ACLTESTFILE); my $acltest = Cpanel::SafeRun::Errors::saferunallerrors( Cpanel::Binaries::path('setfacl'), "-m", "user:nobody:r", "--", $randfile ); my $acltest2 = Cpanel::SafeRun::Errors::saferunnoerror( Cpanel::Binaries::path('getfacl'), $randfile ); chomp($acltest); if ( $acltest ne "" ) { acldeath("System error: setfacl: $acltest when testing for acl support. Your kernel may not support POSIX acls.\n"); } chomp($acltest2); if ( $acltest2 !~ /nobody/i ) { acldeath("System error: setfacl did not set the permissions that were requested. Your kernel may not support POSIX acls.\n"); } print "ACLS are now on\n"; return setacls(1); } sub acldeath ($err) { print "ACLS are now off\n"; setacls(0); return die($err); } sub setacls ($val) { my $cpconf_guard = Cpanel::Config::CpConfGuard->new(); $cpconf_guard->{'data'}->{'acls'} = $val; $cpconf_guard->save(); print "Updating Permissions....."; if ( -e $fileprotect_touch ) { Cpanel::SafeRun::Errors::saferunnoerror('/usr/local/cpanel/scripts/enablefileprotect'); } else { Cpanel::SafeRun::Errors::saferunnoerror('/usr/local/cpanel/scripts/disablefileprotect'); } print "Done\n"; return 1; }
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