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#!/usr/local/cpanel/3rdparty/bin/perl
# cpanel - scripts/ftpquotacheck 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 scripts::ftpquotacheck;
use strict;
use warnings;
use Cpanel::PwCache::Helpers ();
use Cpanel::PwCache::Build ();
use Cpanel::Config::LoadCpConf ();
use Cpanel::JSON (); # PPI NO PARSE - speed up LoadCpConf
use Cpanel::ConfigFiles ();
use Try::Tiny;
use constant ANON_FTP_UID => 65535;
use constant FTP_GID => 65535;
exit( __PACKAGE__->new( 'force' => ( @ARGV && grep( /force/, @ARGV ) ), 'verbose' => 1 )->run() ) unless caller();
sub new {
my ( $class, %args ) = @_;
require Cpanel::IONice;
require Cpanel::OSSys;
my $cpconf_ref = Cpanel::Config::LoadCpConf::loadcpconf_not_copy();
my $self = {%args};
$self->{'purequotacheck'} = _find_purequotacheck();
$self->{'ftp_gid'} = scalar( getgrnam 'ftp' ) || FTP_GID;
$self->{'start_time'} = time();
$self->{'ftpquotacheck_expire_time'} = $cpconf_ref->{'ftpquotacheck_expire_time'};
$self->{'ionice_ftpquotacheck'} = $cpconf_ref->{'ionice_ftpquotacheck'};
return bless $self, $class;
}
sub run {
my ($self) = @_;
print "Ftp Quota Check v2.0\n" if $self->{'verbose'};
return 0 if !$self->{'purequotacheck'};
if ( Cpanel::IONice::ionice( 'best-effort', exists $self->{'ionice_ftpquotacheck'} ? $self->{'ionice_ftpquotacheck'} : 6 ) ) {
print "[ftpquotacheck] Setting I/O priority to reduce system load: " . Cpanel::IONice::get_ionice() . "\n" if $self->{'verbose'};
}
Cpanel::OSSys::nice(10);
local $| = 1;
$self->process_users();
return 0;
}
sub process_users {
my ($self) = @_;
Cpanel::PwCache::Helpers::no_uid_cache(); #uid cache only needed if we are going to make lots of getpwuid calls
Cpanel::PwCache::Build::init_passwdless_pwcache();
my $pwcache_ref = Cpanel::PwCache::Build::fetch_pwcache();
my $processed_users = 0;
foreach my $pwref (@$pwcache_ref) {
my ( $username, $uid, $gid, $homedir ) = (@$pwref)[ 0, 2, 3, 7 ];
if ( $self->_ftp_is_suspended_for_user($username) ) {
print "Skipping suspended FTP users for cPanel Account \"$username\"\n" if $self->{'verbose'};
next;
}
if ( -e $homedir . '/etc/ftpquota' ) {
my $ftp_users_to_process_ar = $self->_get_ftp_users_to_process($username);
if ( $ftp_users_to_process_ar && @$ftp_users_to_process_ar ) {
$processed_users++;
print "Processing cPanel Account \"$username\": \n" if $self->{'verbose'};
$self->_rebuild_ftp_quota_for_virtual_ftp_users(
'system_user' => $username,
'uid' => $uid,
'gid' => $gid,
'user_ftphome_ar' => $ftp_users_to_process_ar,
);
print "Done\n" if $self->{'verbose'};
}
}
}
return $processed_users;
}
sub _get_ftp_users_to_process {
my ( $self, $username ) = @_;
open my $ftp_fh, '<', $self->_get_ftp_user_pw_file($username) or return undef;
my @ftp_users_to_process;
while ( my $line = readline $ftp_fh ) {
# Do not process comments.
# The official file format does not support comments, but we add one anyway when users are suspended.
next if $line =~ m{ \A \s* [#] }xms;
chomp $line;
my ( $ftpuser, $ftphome ) = ( split( /:/, $line ) )[ 0, 5 ];
# Do not process the main username or the _logs
# user as this will result in building an .ftpquota
# for the entire home directory
next if $ftpuser eq $username . '_logs' || $ftpuser eq $username || $ftpuser eq 'anonymous';
push @ftp_users_to_process, [ $ftpuser, $ftphome ];
}
close($ftp_fh);
return \@ftp_users_to_process;
}
sub _update_anon_ftpquota {
my ( $self, %args ) = @_;
my ( $mode, $uid, $gid, $ftphome ) = @args{ 'ftphome_mode', 'uid', 'gid', 'ftphome' };
require Cpanel::SafeFind;
require Cpanel::AccessIds::ReducedPrivileges;
require Cpanel::FileUtils::Write;
require Cpanel::Finally;
my $files = 0;
my $bytes = 0;
$mode //= 0750;
$mode &= 07777; # Mask off any non-perm bits so it can be restored later. This will be 0 if the account is suspended!
my $temp_mode = $mode | 0770; # Ensure user and group can write, but retain "other" perms which is the anonymous access switch.
my $restore_perms = Cpanel::Finally->new(
sub {
if ( $mode != $temp_mode ) {
# Restore previous perms.
my $privs = Cpanel::AccessIds::ReducedPrivileges->new( $uid, $gid );
chmod $mode, $ftphome;
}
}
);
{
my $privs = Cpanel::AccessIds::ReducedPrivileges->new( $uid, $gid );
chmod $temp_mode, $ftphome if ( $mode != $temp_mode );
Cpanel::SafeFind::find(
{
'wanted' => sub {
return if $File::Find::name =~ m/\/\.+$/;
my ( $tuid, $tgid, $tbytes ) = ( lstat($File::Find::name) )[ 4, 5, 7 ];
return if ( $tuid != ANON_FTP_UID || $tgid != $self->{'ftp_gid'} );
$files += 1;
$bytes += $tbytes;
},
'no_chdir' => 1
},
$ftphome
);
}
{
my $privs = Cpanel::AccessIds::ReducedPrivileges->new( ANON_FTP_UID, $self->{'ftp_gid'}, $gid );
try {
Cpanel::FileUtils::Write::overwrite( $ftphome . '/.ftpquota', "$files $bytes\n", 0644 );
}
catch {
warn "Unable to write $ftphome/.ftpquota: $@";
}
}
return 1;
}
sub _run_pure_quota_check_for_user {
my ( $self, %args ) = @_;
require Cpanel::SafeRun::Object;
my ( $system_user, $ftphome ) = @args{ 'system_user', 'ftphome' };
my $run = Cpanel::SafeRun::Object->new(
'program' => $self->{'purequotacheck'},
'args' => [ '-u', $system_user, '-d', $ftphome ],
'user' => $system_user,
'homedir' => $ftphome,
'stdout' => \*STDOUT,
'stderr' => \*STDERR,
);
return $run->CHILD_ERROR() ? 0 : 1;
}
sub _rebuild_ftp_quota_for_virtual_ftp_users {
my ( $self, %args ) = @_;
my ( $system_user, $users_to_process_ar, $uid, $gid ) = @args{ 'system_user', 'user_ftphome_ar', 'uid', 'gid' };
foreach my $user_ref (@$users_to_process_ar) {
my ( $user, $ftphome ) = @{$user_ref};
if ( -d $ftphome ) {
my $mode = ( stat(_) )[2];
if ( !$self->{'force'} && -e $ftphome . '/.ftpquota' && ( stat(_) )[9] + ( 86400 * ( $self->{'ftpquotacheck_expire_time'} || 30 ) ) > $self->{'start_time'} ) {
print " $system_user : $user ... skipped (not expired)\n" if $self->{'verbose'};
next;
}
print " $system_user : $user ($ftphome)..." if $self->{'verbose'};
my %args = (
'system_user' => $system_user,
'ftp_user' => $user,
'ftphome_mode' => $mode,
'uid' => $uid,
'gid' => $gid,
'ftphome' => $ftphome
);
if ( $user eq 'ftp' ) {
$self->_update_anon_ftpquota(%args);
}
else {
$self->_run_pure_quota_check_for_user(%args);
}
print "rebuilt\n" if $self->{'verbose'};
}
}
return 1;
}
sub _get_ftp_user_pw_file {
my ( $self, $user ) = @_;
return "/$Cpanel::ConfigFiles::FTP_PASSWD_DIR/$user";
}
sub _ftp_is_suspended_for_user {
my ( $self, $user ) = @_;
return -e $self->_get_ftp_user_pw_file($user) . '.suspended';
}
sub _find_purequotacheck { # Mocked in tests.
return
-x '/usr/sbin/pure-quotacheck' ? '/usr/sbin/pure-quotacheck'
: -x '/usr/local/sbin/pure-quotacheck' ? '/usr/local/sbin/pure-quotacheck'
: '';
}