Viewing file:  chmod.cgi (2.72 KB) -rwxr-xr-x
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#!/usr/bin/perl
# chmod.cgi
# Change the ownership and permissions on a file
require './file-lib.pl';
$disallowed_buttons{'info'} && &error($text{'ebutton'});
&ReadParse();
&webmin_log($in{'linkto'} ? "relink" : "chmod", undef, $in{'path'}, \%in);
&switch_acl_uid_and_chroot();
print "Content-type: text/plain\n\n";
!$access{'ro'} && &can_access($in{'path'}) ||
&failure(&text('chmod_eaccess', $in{'path'}));
if (defined($in{'user'})) {
$uid = $in{'user'} =~ /^\d+$/ ? $in{'user'} :
%user_to_uid ? $user_to_uid{$in{'user'}} :
getpwnam($in{'user'});
&failure(&text('chmod_euser', $in{'user'})) if (!defined($uid));
$gid = $in{'group'} =~ /^\d+$/ ? $in{'group'} :
%group_to_gid ? $group_to_gid{$in{'group'}} :
getgrnam($in{'group'});
&failure(&text('chmod_egroup', $in{'group'})) if (!defined($gid));
}
if ($in{'linkto'}) {
# Just changing the link target
$follow && &failure($text{'chmod_efollow'});
&lock_file($in{'path'});
unlink($in{'path'});
symlink($in{'linkto'}, $in{'path'}) ||
&failure(&text('chmod_elink', $1));
&unlock_file($in{'path'});
}
elsif ($in{'rec'} == 0) {
# Just this file
&update($in{'path'}, 0);
}
elsif ($in{'rec'} == 1) {
# This directory and all its files
&update($in{'path'}, 0);
opendir(DIR, $in{'path'});
foreach $f (readdir(DIR)) {
next if ($f eq "." || $f eq "..");
next if (-l $full);
&update("$in{'path'}/$f", 1) if (!-d $full);
}
closedir(DIR);
}
elsif ($in{'rec'} == 2) {
# Directory and all subdirectories and files
&update($in{'path'}, 0);
&recurse($in{'path'}, 1, 1);
}
elsif ($in{'rec'} == 3) {
# Files in the directory and sub-directories, but not the directories
# themselves
&recurse($in{'path'}, 1, 0);
}
elsif ($in{'rec'} == 4) {
# This directory and sub-directories, but not files
&update($in{'path'}, 0);
&recurse($in{'path'}, 0, 1);
}
print "\n";
# recurse(dir, do-files, do-dirs)
# Updates permissions on all files in a directory, and sub-directories
sub recurse
{
local ($dir, $do_files, $do_dirs) = @_;
opendir(DIR, $_[0]);
my @files = readdir(DIR);
closedir(DIR);
foreach my $f (@files) {
my $full = "$dir/$f";
next if ($f eq "." || $f eq "..");
next if (-l $full);
if (!-d $full && $do_files ||
-d $full && $do_dirs) {
&update($full, !-d $full);
}
&recurse($full, $do_files, $do_dirs) if (-d $full);
}
}
sub failure
{
print @_,"\n";
exit;
}
# update(file, perms_only)
# Update permissions and ownership on a single file
sub update
{
local $perms = $in{'perms'};
if (defined($uid)) {
chown($uid, $gid, $_[0]) || &failure(&text('chmod_echown', $!));
}
if (defined($perms)) {
if ($_[1]) {
@st = stat($_[0]);
$perms = ($perms & 07777) | ($st[2] & 037777770000);
}
chmod($perms, $_[0]) || &failure(&text('chmod_echmod', $!));
}
}
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