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# at-lib.pl
# Functions for listing and creating at jobs
use strict;
use warnings "once";
no warnings "redefine";
our (%text, %config);
our $remote_user;
BEGIN { push(@INC, ".."); };
use WebminCore;
&init_config();
our %access = &get_module_acl();
do "$config{'at_style'}-lib.pl";
# wrap_lines(text, width)
# Given a multi-line string, return an array of lines wrapped to
# the given width
sub wrap_lines
{
my @rv;
my $w = $_[1];
foreach my $rest (split(/\n/, $_[0])) {
if ($rest =~ /\S/) {
while(length($rest) > $w) {
push(@rv, substr($rest, 0, $w));
$rest = substr($rest, $w);
}
push(@rv, $rest);
}
else {
# Empty line .. keep as it is
push(@rv, $rest);
}
}
return @rv;
}
# can_edit_user(&access, user)
sub can_edit_user
{
my %umap;
map { $umap{$_}++; } split(/\s+/, $_[0]->{'users'});
if ($_[0]->{'mode'} == 1 && !$umap{$_[1]} ||
$_[0]->{'mode'} == 2 && $umap{$_[1]}) { return 0; }
elsif ($_[0]->{'mode'} == 3) {
return $remote_user eq $_[1];
}
else {
return 1;
}
}
# list_allowed()
# Returns a list of all users in the cron allow file
sub list_allowed
{
local $_;
my @rv;
no strict "subs";
&open_readfile(ALLOW, $config{allow_file});
while(<ALLOW>) {
next if (/^\s*#/);
chop; push(@rv, $_) if (/\S/);
}
close(ALLOW);
use strict "subs";
return @rv;
}
# list_denied()
# Return a list of users from the cron deny file
sub list_denied
{
local $_;
my @rv;
no strict "subs";
&open_readfile(DENY, $config{deny_file});
while(<DENY>) {
next if (/^\s*#/);
chop; push(@rv, $_) if (/\S/);
}
close(DENY);
use strict "subs";
return @rv;
}
# save_allowed(user, user, ...)
# Save the list of allowed users
sub save_allowed
{
&lock_file($config{allow_file});
if (@_) {
local($_);
no strict "subs";
&open_tempfile(ALLOW, ">$config{allow_file}");
foreach my $u (@_) {
&print_tempfile(ALLOW, $u,"\n");
}
&close_tempfile(ALLOW);
use strict "subs";
chmod(0444, $config{allow_file});
}
else {
&unlink_file($config{allow_file});
}
&unlock_file($config{allow_file});
}
# save_denied(user, user, ...)
# Save the list of denied users
sub save_denied
{
&lock_file($config{deny_file});
if (@_ || !-r $config{'allow_file'}) {
no strict "subs";
&open_tempfile(DENY, ">$config{deny_file}");
foreach my $u (@_) {
&print_tempfile(DENY, $u,"\n");
}
&close_tempfile(DENY);
use strict "subs";
chmod(0444, $config{deny_file});
}
else {
&unlink_file($config{deny_file});
}
&unlock_file($config{deny_file});
}
# can_use_at(user)
# Returns 1 if some user is allowed to use At jobs, based on the allow
# any deny files.
sub can_use_at
{
my ($user) = @_;
my (@allow, @deny, @denied);
if (!$config{'allow_file'}) {
return 1; # not supported by OS
}
elsif (@allow = &list_allowed()) {
return &indexof($user, @allow) >= 0; # check allowed list
}
elsif (@deny = &list_denied()) {
return &indexof($user, @denied) < 0; # check denied list
}
else {
return 1; # if neither exists, fall back to allowing all
}
}
1;
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