- Check if the user really wants to upload a file to a directory

[devedit.git] / modules / Command.pm

diff --git a/modules/Command.pm b/modules/Command.pm
index 4a5e7681b6ca4a42a8c72705897f96c8c52cb517..84a03783b6000c6863fece596a0618ec3c392076 100644 (file)
--- a/modules/Command.pm
+++ b/modules/Command.pm
@@ -6,7 +6,7 @@ package Command;
 # Execute Dev-Editor's commands
 #
 # Author:        Patrick Canterino <patshaping@gmx.net>
 # Execute Dev-Editor's commands
 #
 # Author:        Patrick Canterino <patshaping@gmx.net>

-# Last modified: 2004-02-20
+# Last modified: 2004-11-24

 #
 
 use strict;
 #
 
 use strict;


@@ -26,6 +26,7 @@ use Output;
 use Template;
 
 my $script = $ENV{'SCRIPT_NAME'};
 use Template;
 
 my $script = $ENV{'SCRIPT_NAME'};

+my $users  = eval("getpwuid(0)") && eval("getgrgid(0)");

 
 my %dispatch = ('show'       => \&exec_show,
                 'beginedit'  => \&exec_beginedit,
 
 my %dispatch = ('show'       => \&exec_show,
                 'beginedit'  => \&exec_beginedit,


@@ -33,10 +34,13 @@ my %dispatch = ('show'       => \&exec_show,
                 'endedit'    => \&exec_endedit,
                 'mkdir'      => \&exec_mkdir,
                 'mkfile'     => \&exec_mkfile,
                 'endedit'    => \&exec_endedit,
                 'mkdir'      => \&exec_mkdir,
                 'mkfile'     => \&exec_mkfile,

+                'upload'     => \&exec_upload,

                 'copy'       => \&exec_copy,
                 'rename'     => \&exec_rename,
                 'remove'     => \&exec_remove,
                 'copy'       => \&exec_copy,
                 'rename'     => \&exec_rename,
                 'remove'     => \&exec_remove,

-                'unlock'     => \&exec_unlock
+                'chprop'     => \&exec_chprop,
+                'unlock'     => \&exec_unlock,
+                'about'      => \&exec_about

                );
 
 ### Export ###
                );
 
 ### Export ###


@@ -59,10 +63,16 @@ sub exec_command($$$)
 {
  my ($command,$data,$config) = @_;
 
 {
  my ($command,$data,$config) = @_;
 

- return error("Unknown command: $command") unless($dispatch{$command});
+ foreach(keys(%dispatch))
+ {
+  if(lc($_) eq lc($command))
+  {
+   my $output = &{$dispatch{$_}}($data,$config);
+   return $output;
+  }
+ }

 
 

- my $output = &{$dispatch{$command}}($data,$config);
- return $output;
+ return error($config->{'errors'}->{'cmd_unknown'},'/',{COMMAND => $command});

 }
 
 # exec_show()
 }
 
 # exec_show()


@@ -79,6 +89,8 @@ sub exec_show($$)
  my ($data,$config) = @_;
  my $physical       = $data->{'physical'};
  my $virtual        = $data->{'virtual'};
  my ($data,$config) = @_;
  my $physical       = $data->{'physical'};
  my $virtual        = $data->{'virtual'};

+ my $upper_path     = upper_path($virtual);
+ my $uselist        = $data->{'uselist'};

 
  my $tpl = new Template;
 
 
  my $tpl = new Template;
 


@@ -86,8 +98,10 @@ sub exec_show($$)
  {
   # Create directory listing
 
  {
   # Create directory listing
 

+  return error($config->{'errors'}->{'no_dir_access'},$upper_path) unless(-r $physical && -x $physical);
+

   my $direntries = dir_read($physical);
   my $direntries = dir_read($physical);

-  return error($config->{'dir_read_failed'},upper_path($virtual),{DIR => '$virtual'}) unless($direntries);
+  return error($config->{'dir_read_fail'},$upper_path,{DIR => $virtual}) unless($direntries);

 
   my $files = $direntries->{'files'};
   my $dirs  = $direntries->{'dirs'};
 
   my $files = $direntries->{'files'};
   my $dirs  = $direntries->{'dirs'};


@@ -102,10 +116,10 @@ sub exec_show($$)
    my @stat  = stat($physical."/..");
 
    my $udtpl = new Template;
    my @stat  = stat($physical."/..");
 
    my $udtpl = new Template;

-   $udtpl->read_file($config->{'tpl_dirlist_up'});
+   $udtpl->read_file($config->{'templates'}->{'dirlist_up'});

 
 

-   $udtpl->fillin("UPPER_DIR",encode_entities(upper_path($virtual)));
-   $udtpl->fillin("DATE",strftime($config->{'timeformat'},localtime($stat[9])));
+   $udtpl->fillin("UPPER_DIR",encode_entities($upper_path));
+   $udtpl->fillin("DATE",encode_entities(strftime($config->{'timeformat'},localtime($stat[9]))));

 
    $dirlist .= $udtpl->get_template;
   }
 
    $dirlist .= $udtpl->get_template;
   }


@@ -114,15 +128,21 @@ sub exec_show($$)
 
   foreach my $dir(@$dirs)
   {
 
   foreach my $dir(@$dirs)
   {

-   my @stat      = stat($physical."/".$dir);
+   my $phys_path = $physical."/".$dir;

    my $virt_path = encode_entities($virtual.$dir."/");
 
    my $virt_path = encode_entities($virtual.$dir."/");
 

+   my @stat      = stat($phys_path);
+

    my $dtpl = new Template;
    my $dtpl = new Template;

-   $dtpl->read_file($config->{'tpl_dirlist_dir'});
+   $dtpl->read_file($config->{'templates'}->{'dirlist_dir'});

 
    $dtpl->fillin("DIR",$virt_path);
    $dtpl->fillin("DIR_NAME",$dir);
 
    $dtpl->fillin("DIR",$virt_path);
    $dtpl->fillin("DIR_NAME",$dir);

-   $dtpl->fillin("DATE",strftime($config->{'timeformat'},localtime($stat[9])));
+   $dtpl->fillin("DATE",encode_entities(strftime($config->{'timeformat'},localtime($stat[9]))));
+   $dtpl->fillin("URL",equal_url($config->{'httproot'},$virt_path));
+
+   $dtpl->parse_if_block("readable",-r $phys_path && -x $phys_path);
+   $dtpl->parse_if_block("users",$users && -o $phys_path);

 
    $dirlist .= $dtpl->get_template;
   }
 
    $dirlist .= $dtpl->get_template;
   }


@@ -135,31 +155,36 @@ sub exec_show($$)
    my $virt_path = encode_entities($virtual.$file);
 
    my @stat      = stat($phys_path);
    my $virt_path = encode_entities($virtual.$file);
 
    my @stat      = stat($phys_path);

-   my $in_use    = $data->{'uselist'}->in_use($virtual.$file);
+   my $in_use    = $uselist->in_use($virtual.$file);

 
    my $ftpl = new Template;
 
    my $ftpl = new Template;

-   $ftpl->read_file($config->{'tpl_dirlist_file'});
+   $ftpl->read_file($config->{'templates'}->{'dirlist_file'});

 
    $ftpl->fillin("FILE",$virt_path);
    $ftpl->fillin("FILE_NAME",$file);
    $ftpl->fillin("SIZE",$stat[7]);
 
    $ftpl->fillin("FILE",$virt_path);
    $ftpl->fillin("FILE_NAME",$file);
    $ftpl->fillin("SIZE",$stat[7]);

-   $ftpl->fillin("DATE",strftime($config->{'timeformat'},localtime($stat[9])));
+   $ftpl->fillin("DATE",encode_entities(strftime($config->{'timeformat'},localtime($stat[9]))));
+   $ftpl->fillin("URL",equal_url($config->{'httproot'},$virt_path));

 
    $ftpl->parse_if_block("not_readable",not -r $phys_path);
    $ftpl->parse_if_block("binary",-B $phys_path);
    $ftpl->parse_if_block("readonly",not -w $phys_path);
 
 
    $ftpl->parse_if_block("not_readable",not -r $phys_path);
    $ftpl->parse_if_block("binary",-B $phys_path);
    $ftpl->parse_if_block("readonly",not -w $phys_path);
 

-   $ftpl->parse_if_block("viewable",-r $phys_path && -T $phys_path);
-   $ftpl->parse_if_block("editable",-w $phys_path && -r $phys_path && -T $phys_path && not $in_use);
+   $ftpl->parse_if_block("viewable",-r $phys_path && -T $phys_path && not ($config->{'max_file_size'} && $stat[7] > $config->{'max_file_size'}));
+
+   $ftpl->parse_if_block("editable",-r $phys_path && -w $phys_path && -T $phys_path && not ($config->{'max_file_size'} && $stat[7] > $config->{'max_file_size'}) && not $in_use);

 
    $ftpl->parse_if_block("in_use",$in_use);
    $ftpl->parse_if_block("unused",not $in_use);
 
 
    $ftpl->parse_if_block("in_use",$in_use);
    $ftpl->parse_if_block("unused",not $in_use);
 

+   $ftpl->parse_if_block("too_large",$config->{'max_file_size'} && $stat[7] > $config->{'max_file_size'});
+
+   $ftpl->parse_if_block("users",$users && -o $phys_path);
+

    $dirlist .= $ftpl->get_template;
   }
 
    $dirlist .= $ftpl->get_template;
   }
 

-
-  $tpl->read_file($config->{'tpl_dirlist'});
+  $tpl->read_file($config->{'templates'}->{'dirlist'});

 
   $tpl->fillin("DIRLIST",$dirlist);
   $tpl->fillin("DIR",$virtual);
 
   $tpl->fillin("DIRLIST",$dirlist);
   $tpl->fillin("DIR",$virtual);


@@ -170,7 +195,7 @@ sub exec_show($$)
  {
   # View a file
 
  {
   # View a file
 

-  return error($config->{'err_noview'},upper_path($virtual)) unless(-r $physical);
+  return error($config->{'errors'}->{'noview'},$upper_path) unless(-r $physical);

 
   # Check on binary files
   # We have to do it in this way, or empty files
 
   # Check on binary files
   # We have to do it in this way, or empty files


@@ -180,21 +205,34 @@ sub exec_show($$)
   {
    # Binary file
 
   {
    # Binary file
 

-   return error($config->{'err_binary'},upper_path($virtual));
+   return error($config->{'errors'}->{'binary'},$upper_path);

   }
   else
   {
    # Text file
 
   }
   else
   {
    # Text file
 

-   my $content = file_read($physical);
+   my $size = -s $physical;
+
+   if($config->{'max_file_size'} && $size > $config->{'max_file_size'})
+   {
+    return error($config->{'errors'}->{'file_too_large'},$upper_path,{SIZE => $config->{'max_file_size'}})
+   }
+   else
+   {
+    my $content =  file_read($physical);
+    $$content   =~ s/\015\012|\012|\015/\n/g;
+
+    $tpl->read_file($config->{'templates'}->{'viewfile'});

 
 

-   $tpl->read_file($config->{'tpl_viewfile'});
+    $tpl->fillin("FILE",$virtual);
+    $tpl->fillin("DIR",$upper_path);
+    $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
+    $tpl->fillin("SCRIPT",$script);

 
 

-   $tpl->fillin("FILE",$virtual);
-   $tpl->fillin("DIR",upper_path($virtual));
-   $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
-   $tpl->fillin("SCRIPT",$script);
-   $tpl->fillin("CONTENT",encode_entities($$content));
+    $tpl->parse_if_block("editable",-r $physical && -w $physical && -T $physical && not ($config->{'max_file_size'} && $size > $config->{'max_file_size'}) && $uselist->unused($virtual));
+
+    $tpl->fillin("CONTENT",encode_entities($$content));
+   }

   }
  }
 
   }
  }
 


@@ -218,11 +256,12 @@ sub exec_beginedit($$)
  my ($data,$config) = @_;
  my $physical       = $data->{'physical'};
  my $virtual        = $data->{'virtual'};
  my ($data,$config) = @_;
  my $physical       = $data->{'physical'};
  my $virtual        = $data->{'virtual'};

+ my $dir            = upper_path($virtual);

  my $uselist        = $data->{'uselist'};
 
  my $uselist        = $data->{'uselist'};
 

- return error($config->{'err_editdir'},upper_path($virtual)) if(-d $physical);
- return error_in_use($virtual) if($uselist->in_use($virtual));
- return error($config->{'err_noedit'},upper_path($virtual)) unless(-r $physical && -w $physical);
+ return error($config->{'errors'}->{'editdir'},$dir)                    if(-d $physical);
+ return error($config->{'errors'}->{'in_use'}, $dir,{FILE => $virtual}) if($uselist->in_use($virtual));
+ return error($config->{'errors'}->{'noedit'}, $dir)                    unless(-r $physical && -w $physical);

 
  # Check on binary files
 
 
  # Check on binary files
 


@@ -230,30 +269,38 @@ sub exec_beginedit($$)
  {
   # Binary file
 
  {
   # Binary file
 

-  return error($config->{'err_binary'},upper_path($virtual));
+  return error($config->{'errors'}->{'binary'},$dir);

  }
  else
  {
  }
  else
  {

-  # Text file
+  if($config->{'max_file_size'} && (-s $physical) > $config->{'max_file_size'})
+  {
+   return error($config->{'errors'}->{'file_too_large'},$dir,{SIZE => $config->{'max_file_size'}})
+  }
+  else
+  {
+   # Text file

 
 

-  $uselist->add_file($virtual);
-  $uselist->save;
+   $uselist->add_file($virtual);
+   $uselist->save;

 
 

-  my $content = file_read($physical);
+   my $content =  file_read($physical);
+   $$content   =~ s/\015\012|\012|\015/\n/g;

 
 

-  my $tpl = new Template;
-  $tpl->read_file($config->{'tpl_editfile'});
+   my $tpl = new Template;
+   $tpl->read_file($config->{'templates'}->{'editfile'});

 
 

-  $tpl->fillin("FILE",$virtual);
-  $tpl->fillin("DIR",upper_path($virtual));
-  $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
-  $tpl->fillin("SCRIPT",$script);
-  $tpl->fillin("CONTENT",encode_entities($$content));
+   $tpl->fillin("FILE",$virtual);
+   $tpl->fillin("DIR",$dir);
+   $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
+   $tpl->fillin("SCRIPT",$script);
+   $tpl->fillin("CONTENT",encode_entities($$content));

 
 

-  my $output = header(-type => "text/html");
-  $output   .= $tpl->get_template;
+   my $output = header(-type => "text/html");
+   $output   .= $tpl->get_template;

 
 

-  return \$output;
+   return \$output;
+  }

  }
 }
 
  }
 }
 


@@ -270,9 +317,8 @@ sub exec_canceledit($$)
 {
  my ($data,$config) = @_;
  my $virtual        = $data->{'virtual'};
 {
  my ($data,$config) = @_;
  my $virtual        = $data->{'virtual'};

- my $uselist        = $data->{'uselist'};

 
 

- file_unlock($uselist,$virtual);
+ file_unlock($data->{'uselist'},$virtual);

  return devedit_reload({command => 'show', file => upper_path($virtual)});
 }
 
  return devedit_reload({command => 'show', file => upper_path($virtual)});
 }
 


@@ -290,10 +336,17 @@ sub exec_endedit($$)
  my ($data,$config) = @_;
  my $physical       = $data->{'physical'};
  my $virtual        = $data->{'virtual'};
  my ($data,$config) = @_;
  my $physical       = $data->{'physical'};
  my $virtual        = $data->{'virtual'};

+ my $dir            = upper_path($virtual);

  my $content        = $data->{'cgi'}->param('filecontent');
  my $content        = $data->{'cgi'}->param('filecontent');

+ my $uselist        = $data->{'uselist'};
+
+ # We already unlock the file at the beginning of the
+ # subroutine, because if we have to abort this routine,
+ # the file keeps locked.
+ # Nobody else will access the file during this routine
+ # because of the concept of File::UseList.

 
 

- return error($config->{'err_editdir'},upper_path($virtual)) if(-d $physical);
- return error($config->{'err_noedit'}, upper_path($virtual)) unless(-r $physical && -w $physical);
+ file_unlock($uselist,$virtual);

 
  # Normalize newlines
 
 
  # Normalize newlines
 


@@ -306,24 +359,31 @@ sub exec_endedit($$)
   $content = encode_entities($content,"\200-\377");
  }
 
   $content = encode_entities($content,"\200-\377");
  }
 

- if($data->{'cgi'}->param('saveas'))
+ if($data->{'cgi'}->param('saveas') && $data->{'new_physical'} ne '' && $data->{'new_virtual'} ne '')

  {
   # Create the new filename
 
   $physical = $data->{'new_physical'};
   $virtual  = $data->{'new_virtual'};
  {
   # Create the new filename
 
   $physical = $data->{'new_physical'};
   $virtual  = $data->{'new_virtual'};

+
+  # Check if someone else is editing the new file
+
+  return error($config->{'errors'}->{'in_use'},$dir,{FILE => $virtual}) if($uselist->in_use($virtual));

  }
 
  }
 

+ return error($config->{'errors'}->{'text_to_binary'},$dir) unless(-T $physical);
+ return error($config->{'errors'}->{'editdir'},$dir)        if(-d $physical);
+ return error($config->{'errors'}->{'noedit'}, $dir)        if(-e $physical && !(-r $physical && -w $physical));
+

  if(file_save($physical,\$content))
  {
   # Saving of the file was successful - so unlock it!
 
  if(file_save($physical,\$content))
  {
   # Saving of the file was successful - so unlock it!
 

-  file_unlock($data->{'uselist'},$virtual);
-  return devedit_reload({command => 'show', file => upper_path($virtual)});
+  return devedit_reload({command => 'show', file => $dir});

  }
  else
  {
  }
  else
  {

-  return error($config->{'err_editfailed'},upper_path($virtual),{FILE => $virtual});
+  return error($config->{'errors'}->{'edit_failed'},$dir,{FILE => $virtual});

  }
 }
 
  }
 }
 


@@ -344,10 +404,26 @@ sub exec_mkfile($$)
  my $dir            = upper_path($new_virtual);
  $new_virtual       = encode_entities($new_virtual);
 
  my $dir            = upper_path($new_virtual);
  $new_virtual       = encode_entities($new_virtual);
 

- return error("A file or directory called '$new_virtual' already exists.",$dir) if(-e $new_physical);
+ if($new_physical)
+ {
+  return error($config->{'errors'}->{'file_exists'},$dir,{FILE => $new_virtual}) if(-e $new_physical);

 
 

- file_create($new_physical) or return error("Could not create file '$new_virtual'.",$dir);
- return devedit_reload({command => 'show', file => $dir});
+  file_create($new_physical) or return error($config->{'errors'}->{'mkfile_failed'},$dir,{FILE => $new_virtual});
+  return devedit_reload({command => 'show', file => $dir});
+ }
+ else
+ {
+  my $tpl = new Template;
+  $tpl->read_file($config->{'templates'}->{'mkfile'});
+
+  $tpl->fillin("DIR","/");
+  $tpl->fillin("SCRIPT",$script);
+
+  my $output = header(-type => "text/html");
+  $output   .= $tpl->get_template;
+
+  return \$output;
+ }

 }
 
 # exec_mkdir()
 }
 
 # exec_mkdir()


@@ -367,10 +443,88 @@ sub exec_mkdir($$)
  my $dir            = upper_path($new_virtual);
  $new_virtual       = encode_entities($new_virtual);
 
  my $dir            = upper_path($new_virtual);
  $new_virtual       = encode_entities($new_virtual);
 

- return error("A file or directory called '$new_virtual' already exists.",$dir) if(-e $new_physical);
+ return error($config->{'errors'}->{'file_exists'},$dir,{FILE => $new_virtual}) if(-e $new_physical);

 
 

- mkdir($new_physical,0777) or return error("Could not create directory '$new_virtual'.",$dir);
- return devedit_reload({command => 'show', file => $dir});
+ if($new_physical)
+ {
+  mkdir($new_physical,0777) or return error($config->{'errors'}->{'mkdir_failed'},$dir,{DIR => $new_virtual});
+  return devedit_reload({command => 'show', file => $dir});
+ }
+ else
+ {
+  my $tpl = new Template;
+  $tpl->read_file($config->{'templates'}->{'mkdir'});
+
+  $tpl->fillin("DIR","/");
+  $tpl->fillin("SCRIPT",$script);
+
+  my $output = header(-type => "text/html");
+  $output   .= $tpl->get_template;
+
+  return \$output;
+ }
+}
+
+# exec_upload()
+#
+# Upload a file
+#
+# Params: 1. Reference to user input hash
+#         2. Reference to config hash
+#
+# Return: Output of the command (Scalar Reference)
+
+sub exec_upload($$)
+{
+ my ($data,$config) = @_;
+ my $physical       = $data->{'physical'};
+ my $virtual        = $data->{'virtual'};
+ my $cgi            = $data->{'cgi'};
+
+ return error($config->{'errors'}->{'no_directory'},upper_path($virtual),{FILE => $virtual}) unless(-d $physical);
+
+ if(my $uploaded_file = $cgi->param('uploaded_file'))
+ {
+  # Process file upload
+
+  my $filename  = file_name($uploaded_file);
+  my $file_phys = $physical."/".$filename;
+  my $file_virt = $virtual."".$filename;
+
+  return error($config->{'errors'}->{'file_exists'},$virtual,{FILE => $file_virt}) if(-e $file_phys && not $cgi->param('overwrite'));
+
+  my $ascii     = $cgi->param('ascii');
+  my $handle    = $cgi->upload('uploaded_file');
+
+  local *FILE;
+
+  open(FILE,">$file_phys") or return error($config->{'errors'}->{'mkfile_failed'},$virtual,{FILE => $file_virt});
+  binmode(FILE) unless($ascii);
+
+  # Read transferred file and write it to disk
+
+  read($handle, my $data, -s $handle);
+  $data =~ s/\015\012|\012|\015/\n/g if($ascii); # Replace line separators if transferring in ASCII mode
+  print FILE $data;
+
+  close(FILE);
+
+  return devedit_reload({command => "show", file => $virtual});
+ }
+ else
+ {
+  my $tpl = new Template;
+  $tpl->read_file($config->{'templates'}->{'upload'});
+
+  $tpl->fillin("DIR",$virtual);
+  $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
+  $tpl->fillin("SCRIPT",$script);
+
+  my $output = header(-type => "text/html");
+  $output   .= $tpl->get_template;
+
+  return \$output;
+ }

 }
 
 # exec_copy()
 }
 
 # exec_copy()


@@ -389,8 +543,8 @@ sub exec_copy($$)
  my $virtual        = encode_entities($data->{'virtual'});
  my $new_physical   = $data->{'new_physical'};
 
  my $virtual        = encode_entities($data->{'virtual'});
  my $new_physical   = $data->{'new_physical'};
 

- return error($config->{'err_dircopy'}) if(-d $physical);
- return error($config->{'err_nocopy'})  unless(-r $physical);
+ return error($config->{'errors'}->{'dircopy'}) if(-d $physical);
+ return error($config->{'errors'}->{'nocopy'})  unless(-r $physical);

 
  if($new_physical)
  {
 
  if($new_physical)
  {


@@ -400,20 +554,23 @@ sub exec_copy($$)
 
   if(-e $new_physical)
   {
 
   if(-e $new_physical)
   {

+   return error($config->{'errors'}->{'exist_edited'},$dir,{FILE => $new_virtual}) if($data->{'uselist'}->in_use($data->{'new_virtual'}));
+

    if(-d $new_physical)
    {
    if(-d $new_physical)
    {

-    return error("A directory called '$new_virtual' already exists. You cannot replace a directory by a file!",$dir);
+    return error($config->{'errors'}->{'dir_replace'},$dir);

    }
    elsif(not $data->{'cgi'}->param('confirmed'))
    {
     my $tpl = new Template;
    }
    elsif(not $data->{'cgi'}->param('confirmed'))
    {
     my $tpl = new Template;

-    $tpl->read_file($config->{'tpl_confirm_replace'});
+    $tpl->read_file($config->{'templates'}->{'confirm_replace'});

 
     $tpl->fillin("FILE",$virtual);
     $tpl->fillin("NEW_FILE",$new_virtual);
     $tpl->fillin("NEW_FILENAME",file_name($new_virtual));
     $tpl->fillin("NEW_DIR",$dir);
     $tpl->fillin("DIR",upper_path($virtual));
 
     $tpl->fillin("FILE",$virtual);
     $tpl->fillin("NEW_FILE",$new_virtual);
     $tpl->fillin("NEW_FILENAME",file_name($new_virtual));
     $tpl->fillin("NEW_DIR",$dir);
     $tpl->fillin("DIR",upper_path($virtual));

+

     $tpl->fillin("COMMAND","copy");
     $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
     $tpl->fillin("SCRIPT",$script);
     $tpl->fillin("COMMAND","copy");
     $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
     $tpl->fillin("SCRIPT",$script);


@@ -425,18 +582,13 @@ sub exec_copy($$)
    }
   }
 
    }
   }
 

-  if($data->{'uselist'}->in_use($data->{'new_virtual'}))
-  {
-   return error("The target file '$new_virtual' already exists and it is edited by someone else.",$dir);
-  }
-
-  copy($physical,$new_physical) or return error("Could not copy '$virtual' to '$new_virtual'",upper_path($virtual));
+  copy($physical,$new_physical) or return error($config->{'errors'}->{'copy_failed'},upper_path($virtual),{FILE => $virtual, NEW_FILE => $new_virtual});

   return devedit_reload({command => 'show', file => $dir});
  }
  else
  {
   my $tpl = new Template;
   return devedit_reload({command => 'show', file => $dir});
  }
  else
  {
   my $tpl = new Template;

-  $tpl->read_file($config->{'tpl_copyfile'});
+  $tpl->read_file($config->{'templates'}->{'copyfile'});

 
   $tpl->fillin("FILE",$virtual);
   $tpl->fillin("DIR",upper_path($virtual));
 
   $tpl->fillin("FILE",$virtual);
   $tpl->fillin("DIR",upper_path($virtual));


@@ -465,11 +617,9 @@ sub exec_rename($$)
  my $physical       = $data->{'physical'};
  my $virtual        = $data->{'virtual'};
  my $new_physical   = $data->{'new_physical'};
  my $physical       = $data->{'physical'};
  my $virtual        = $data->{'virtual'};
  my $new_physical   = $data->{'new_physical'};

- my $new_virtual    = $data->{'new_virtual'};
- my $dir            = upper_path($new_virtual);
- $new_virtual       = encode_entities($new_virtual);

 
 

- return error_in_use($virtual) if($data->{'uselist'}->in_use($virtual));
+ return error($config->{'errors'}->{'rename_root'},"/") if($virtual eq "/");
+ return error($config->{'errors'}->{'in_use'},upper_path($virtual),{FILE => $virtual}) if($data->{'uselist'}->in_use($virtual));

 
  if($new_physical)
  {
 
  if($new_physical)
  {


@@ -479,20 +629,23 @@ sub exec_rename($$)
 
   if(-e $new_physical)
   {
 
   if(-e $new_physical)
   {

+   return error($config->{'errors'}->{'exist_edited'},$dir,{FILE => $new_virtual}) if($data->{'uselist'}->in_use($data->{'new_virtual'}));
+

    if(-d $new_physical)
    {
    if(-d $new_physical)
    {

-    return error("A directory called '$new_virtual' already exists. You cannot replace a directory by a file!",$dir);
+    return error($config->{'errors'}->{'dir_replace'},$dir);

    }
    elsif(not $data->{'cgi'}->param('confirmed'))
    {
     my $tpl = new Template;
    }
    elsif(not $data->{'cgi'}->param('confirmed'))
    {
     my $tpl = new Template;

-    $tpl->read_file($config->{'tpl_confirm_replace'});
+    $tpl->read_file($config->{'templates'}->{'confirm_replace'});

 
     $tpl->fillin("FILE",$virtual);
     $tpl->fillin("NEW_FILE",$new_virtual);
     $tpl->fillin("NEW_FILENAME",file_name($new_virtual));
     $tpl->fillin("NEW_DIR",$dir);
     $tpl->fillin("DIR",upper_path($virtual));
 
     $tpl->fillin("FILE",$virtual);
     $tpl->fillin("NEW_FILE",$new_virtual);
     $tpl->fillin("NEW_FILENAME",file_name($new_virtual));
     $tpl->fillin("NEW_DIR",$dir);
     $tpl->fillin("DIR",upper_path($virtual));

+

     $tpl->fillin("COMMAND","rename");
     $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
     $tpl->fillin("SCRIPT",$script);
     $tpl->fillin("COMMAND","rename");
     $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
     $tpl->fillin("SCRIPT",$script);


@@ -504,18 +657,13 @@ sub exec_rename($$)
    }
   }
 
    }
   }
 

-  if($data->{'uselist'}->in_use($data->{'new_virtual'}))
-  {
-   return error("The target file '$new_virtual' already exists and it is edited by someone else.",$dir);
-  }
-
-  rename($physical,$new_physical) or return error("Could not move/rename '$virtual' to '$new_virtual'",upper_path($virtual));
+  rename($physical,$new_physical) or return error($config->{'errors'}->{'rename_failed'},upper_path($virtual),{FILE => $virtual, NEW_FILE => $new_virtual});

   return devedit_reload({command => 'show', file => $dir});
  }
  else
  {
   my $tpl = new Template;
   return devedit_reload({command => 'show', file => $dir});
  }
  else
  {
   my $tpl = new Template;

-  $tpl->read_file($config->{'tpl_renamefile'});
+  $tpl->read_file($config->{'templates'}->{'renamefile'});

 
   $tpl->fillin("FILE",$virtual);
   $tpl->fillin("DIR",upper_path($virtual));
 
   $tpl->fillin("FILE",$virtual);
   $tpl->fillin("DIR",upper_path($virtual));


@@ -544,6 +692,8 @@ sub exec_remove($$)
  my $physical       = $data->{'physical'};
  my $virtual        = $data->{'virtual'};
 
  my $physical       = $data->{'physical'};
  my $virtual        = $data->{'virtual'};
 

+ return error($config->{'errors'}->{'remove_root'},"/") if($virtual eq "/");
+

  if(-d $physical)
  {
   # Remove a directory
  if(-d $physical)
  {
   # Remove a directory


@@ -556,7 +706,7 @@ sub exec_remove($$)
   else
   {
    my $tpl = new Template;
   else
   {
    my $tpl = new Template;

-   $tpl->read_file($config->{'tpl_confirm_rmdir'});
+   $tpl->read_file($config->{'templates'}->{'confirm_rmdir'});

 
    $tpl->fillin("DIR",$virtual);
    $tpl->fillin("UPPER_DIR",upper_path($virtual));
 
    $tpl->fillin("DIR",$virtual);
    $tpl->fillin("UPPER_DIR",upper_path($virtual));


@@ -573,17 +723,17 @@ sub exec_remove($$)
  {
   # Remove a file
 
  {
   # Remove a file
 

-  return error_in_use($virtual) if($data->{'uselist'}->in_use($virtual));
+  return error($config->{'errors'}->{'in_use'},upper_path($virtual),{FILE => $virtual}) if($data->{'uselist'}->in_use($virtual));

 
   if($data->{'cgi'}->param('confirmed'))
   {
 
   if($data->{'cgi'}->param('confirmed'))
   {

-   unlink($physical) or return error($config->{'err_editfailed'},upper_path($virtual),{FILE => $virtual});
+   unlink($physical) or return error($config->{'errors'}->{'delete_failed'},upper_path($virtual),{FILE => $virtual});

    return devedit_reload({command => 'show', file => upper_path($virtual)});
   }
   else
   {
    my $tpl = new Template;
    return devedit_reload({command => 'show', file => upper_path($virtual)});
   }
   else
   {
    my $tpl = new Template;

-   $tpl->read_file($config->{'tpl_confirm_rmfile'});
+   $tpl->read_file($config->{'templates'}->{'confirm_rmfile'});

 
    $tpl->fillin("FILE",$virtual);
    $tpl->fillin("DIR",upper_path($virtual));
 
    $tpl->fillin("FILE",$virtual);
    $tpl->fillin("DIR",upper_path($virtual));


@@ -598,6 +748,109 @@ sub exec_remove($$)
  }
 }
 
  }
 }
 

+# exec_chprop()
+#
+# Change the mode and the group of a file or a directory
+#
+# Params: 1. Reference to user input hash
+#         2. Reference to config hash
+#
+# Return: Output of the command (Scalar Reference)
+
+sub exec_chprop($$)
+{
+ my ($data,$config) = @_;
+ my $physical       = $data->{'physical'};
+ my $virtual        = $data->{'virtual'};
+ my $dir            = upper_path($virtual);
+ my $cgi            = $data->{'cgi'};
+ my $mode           = $cgi->param('mode');
+ my $group          = $cgi->param('group');
+
+ if($users)
+ {
+  # System supports user and groups
+
+  if(-o $physical)
+  {
+   # We own this file
+
+   if($mode || $group)
+   {
+    if($mode)
+    {
+     # Change the mode
+
+     my $oct_mode = $mode;
+     $oct_mode    = "0".$oct_mode if(length($oct_mode) == 3);
+     $oct_mode    = oct($oct_mode);
+
+     chmod($oct_mode,$physical);
+    }
+
+    if($group)
+    {
+     # Change the group using the `chgrp` system command
+
+     return error($config->{'errors'}->{'invalid_group'},$dir,{GROUP => encode_entities($group)}) unless($group =~ /^[a-z0-9_]+[a-z0-9_-]*$/i);
+     system("chgrp",$group,$physical);
+    }
+
+    return devedit_reload({command => 'show', file => $dir});
+   }
+   else
+   {
+    # Display the form
+
+    my @stat     = stat($physical);
+
+    my $mode     = $stat[2];
+    my $mode_oct = substr(sprintf("%04o",$mode),-4);
+    my $gid      = $stat[5];
+
+    my $tpl = new Template;
+    $tpl->read_file($config->{'templates'}->{'chprop'});
+
+    # Insert file properties into the template
+
+    $tpl->fillin("MODE_OCTAL",$mode_oct);
+    $tpl->fillin("MODE_STRING",mode_string($mode));
+    $tpl->fillin("GID",$gid);
+
+    if(my $group = getgrgid($gid))
+    {
+     $tpl->fillin("GROUP",encode_entities($group));
+     $tpl->parse_if_block("group_detected",1);
+    }
+    else
+    {
+     $tpl->parse_if_block("group_detected",0);
+    }
+
+    # Insert other information
+
+    $tpl->fillin("FILE",$virtual);
+    $tpl->fillin("DIR",$dir);
+    $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
+    $tpl->fillin("SCRIPT",$script);
+
+    my $output = header(-type => "text/html");
+    $output   .= $tpl->get_template;
+
+    return \$output;
+   }
+  }
+  else
+  {
+   return error($config->{'errors'}->{'not_owner'},$dir,{FILE => $virtual});
+  }
+ }
+ else
+ {
+  return error($config->{'errors'}->{'no_users'},$dir,{FILE => $virtual});
+ }
+}
+

 # exec_unlock()
 #
 # Remove a file from the list of used files and
 # exec_unlock()
 #
 # Remove a file from the list of used files and


@@ -614,6 +867,8 @@ sub exec_unlock($$)
  my $virtual        = $data->{'virtual'};
  my $uselist        = $data->{'uselist'};
 
  my $virtual        = $data->{'virtual'};
  my $uselist        = $data->{'uselist'};
 

+ return devedit_reload({command => 'show', file => upper_path($virtual)}) if($uselist->unused($virtual));
+

  if($data->{'cgi'}->param('confirmed'))
  {
   file_unlock($uselist,$virtual);
  if($data->{'cgi'}->param('confirmed'))
  {
   file_unlock($uselist,$virtual);


@@ -622,7 +877,7 @@ sub exec_unlock($$)
  else
  {
   my $tpl = new Template;
  else
  {
   my $tpl = new Template;

-  $tpl->read_file($config->{'tpl_confirm_unlock'});
+  $tpl->read_file($config->{'templates'}->{'confirm_unlock'});

 
   $tpl->fillin("FILE",$virtual);
   $tpl->fillin("DIR",upper_path($virtual));
 
   $tpl->fillin("FILE",$virtual);
   $tpl->fillin("DIR",upper_path($virtual));


@@ -636,6 +891,104 @@ sub exec_unlock($$)
  }
 }
 
  }
 }
 

+# exec_about()
+#
+# Display some information about Dev-Editor
+#
+# Params: 1. Reference to user input hash
+#         2. Reference to config hash
+#
+# Return: Output of the command (Scalar Reference)
+
+sub exec_about($$)
+{
+ my ($data,$config) = @_;
+
+ my $tpl = new Template;
+ $tpl->read_file($config->{'templates'}->{'about'});
+
+ $tpl->fillin("SCRIPT",$script);
+
+ # Dev-Editor's version number
+
+ $tpl->fillin("VERSION",$data->{'version'});
+
+ # Some path information
+
+ $tpl->fillin("SCRIPT_PHYS",encode_entities($ENV{'SCRIPT_FILENAME'}));
+ $tpl->fillin("CONFIG_PATH",encode_entities($data->{'configfile'}));
+ $tpl->fillin("FILE_ROOT",  encode_entities($config->{'fileroot'}));
+ $tpl->fillin("HTTP_ROOT",  encode_entities($config->{'httproot'}));
+
+ # Perl
+
+ $tpl->fillin("PERL_PROG",encode_entities($^X));
+ $tpl->fillin("PERL_VER",sprintf("%vd",$^V));
+
+ # Information about the server
+
+ $tpl->fillin("HTTPD",encode_entities($ENV{'SERVER_SOFTWARE'}));
+ $tpl->fillin("OS",$^O);
+ $tpl->fillin("TIME",encode_entities(strftime($config->{'timeformat'},localtime)));
+
+ # Process information
+
+ $tpl->fillin("PID",$$);
+
+ # Check if the functions getpwuid() and getgrgid() are available
+
+ if($users)
+ {
+  # Dev-Editor is running on a system which allows users and groups
+  # So we display the user and the group of our process
+
+  my $uid = POSIX::getuid;
+  my $gid = POSIX::getgid;
+
+  $tpl->parse_if_block("users",1);
+
+  # ID's of user and group
+
+  $tpl->fillin("UID",$uid);
+  $tpl->fillin("GID",$gid);
+
+  # Names of user and group
+
+  if(my $user = getpwuid($uid))
+  {
+   $tpl->fillin("USER",encode_entities($user));
+   $tpl->parse_if_block("user_detected",1);
+  }
+  else
+  {
+   $tpl->parse_if_block("user_detected",0);
+  }
+
+  if(my $group = getgrgid($gid))
+  {
+   $tpl->fillin("GROUP",encode_entities($group));
+   $tpl->parse_if_block("group_detected",1);
+  }
+  else
+  {
+   $tpl->parse_if_block("group_detected",0);
+  }
+
+  # Process umask
+
+  $tpl->fillin("UMASK",sprintf("%04o",umask));
+ }
+ else
+ {
+  $tpl->parse_if_block("users",0);
+ }
+
+ my $output = header(-type => "text/html");
+ $output   .= $tpl->get_template;
+
+ return \$output;
+}
+

 # it's true, baby ;-)
 
 1;
 # it's true, baby ;-)
 
 1;