modules/Command.pm

   1 package Command;
   2
   3 #
   4 # Dev-Editor - Module Command
   5 #
   6 # Execute Dev-Editor's commands
   7 #
   8 # Author:        Patrick Canterino <patrick@patshaping.de>
   9 # Last modified: 2004-12-16
  10 #
  11
  12 use strict;
  13
  14 use vars qw(@EXPORT);
  15
  16 use File::Access;
  17 use File::Copy;
  18 use File::Path;
  19
  20 use POSIX qw(strftime);
  21 use Tool;
  22
  23 use CGI qw(header);
  24 use HTML::Entities;
  25 use Output;
  26 use Template;
  27
  28 my $script = encode_entities($ENV{'SCRIPT_NAME'});
  29 my $users  = eval("getpwuid(0)") && eval("getgrgid(0)");
  30
  31 my %dispatch = ('show'       => \&exec_show,
  32                 'beginedit'  => \&exec_beginedit,
  33                 'canceledit' => \&exec_canceledit,
  34                 'endedit'    => \&exec_endedit,
  35                 'mkdir'      => \&exec_mkdir,
  36                 'mkfile'     => \&exec_mkfile,
  37                 'upload'     => \&exec_upload,
  38                 'copy'       => \&exec_copy,
  39                 'rename'     => \&exec_rename,
  40                 'remove'     => \&exec_remove,
  41                 'chprop'     => \&exec_chprop,
  42                 'unlock'     => \&exec_unlock,
  43                 'about'      => \&exec_about
  44                );
  45
  46 ### Export ###
  47
  48 use base qw(Exporter);
  49
  50 @EXPORT = qw(exec_command);
  51
  52 # exec_command()
  53 #
  54 # Execute the specified command
  55 #
  56 # Params: 1. Command to execute
  57 #         2. Reference to user input hash
  58 #         3. Reference to config hash
  59 #
  60 # Return: Output of the command (Scalar Reference)
  61
  62 sub exec_command($$$)
  63 {
  64  my ($command,$data,$config) = @_;
  65
  66  foreach(keys(%dispatch))
  67  {
  68   if(lc($_) eq lc($command))
  69   {
  70    my $output = &{$dispatch{$_}}($data,$config);
  71    return $output;
  72   }
  73  }
  74
  75  return error($config->{'errors'}->{'cmd_unknown'},'/',{COMMAND => $command});
  76 }
  77
  78 # exec_show()
  79 #
  80 # View a directory or a file
  81 #
  82 # Params: 1. Reference to user input hash
  83 #         2. Reference to config hash
  84 #
  85 # Return: Output of the command (Scalar Reference)
  86
  87 sub exec_show($$)
  88 {
  89  my ($data,$config) = @_;
  90  my $physical       = $data->{'physical'};
  91  my $virtual        = $data->{'virtual'};
  92  my $upper_path     = encode_entities(upper_path($virtual));
  93  my $uselist        = $data->{'uselist'};
  94
  95  my $tpl = new Template;
  96
  97  if(-d $physical)
  98  {
  99   # Create directory listing
 100
 101   return error($config->{'errors'}->{'no_dir_access'},$upper_path) unless(-r $physical && -x $physical);
 102
 103   my $direntries = dir_read($physical);
 104   return error($config->{'dir_read_fail'},$upper_path,{DIR => encode_entities($virtual)}) unless($direntries);
 105
 106   my $files = $direntries->{'files'};
 107   my $dirs  = $direntries->{'dirs'};
 108
 109   my $dir_writeable = -w $physical;
 110
 111   my $dirlist = "";
 112
 113   # Create the link to the upper directory
 114   # (only if we are not in the root directory)
 115
 116   unless($virtual eq "/")
 117   {
 118    my @stat  = stat($physical."/..");
 119
 120    my $udtpl = new Template;
 121    $udtpl->read_file($config->{'templates'}->{'dirlist_up'});
 122
 123    $udtpl->fillin("UPPER_DIR",$upper_path);
 124    $udtpl->fillin("DATE",encode_entities(strftime($config->{'timeformat'},localtime($stat[9]))));
 125
 126    $dirlist .= $udtpl->get_template;
 127   }
 128
 129   # Directories
 130
 131   foreach my $dir(@$dirs)
 132   {
 133    my $phys_path = $physical."/".$dir;
 134    my $virt_path = encode_entities($virtual.$dir."/");
 135
 136    my @stat      = stat($phys_path);
 137
 138    my $dtpl = new Template;
 139    $dtpl->read_file($config->{'templates'}->{'dirlist_dir'});
 140
 141    $dtpl->fillin("DIR",$virt_path);
 142    $dtpl->fillin("DIR_NAME",encode_entities($dir));
 143    $dtpl->fillin("DATE",encode_entities(strftime($config->{'timeformat'},localtime($stat[9]))));
 144    $dtpl->fillin("URL",equal_url($config->{'httproot'},$virt_path));
 145
 146    $dtpl->parse_if_block("readable",-r $phys_path && -x $phys_path);
 147    $dtpl->parse_if_block("users",$users && -o $phys_path);
 148
 149    $dirlist .= $dtpl->get_template;
 150   }
 151
 152   # Files
 153
 154   foreach my $file(@$files)
 155   {
 156    my $phys_path = $physical."/".$file;
 157    my $virt_path = encode_entities($virtual.$file);
 158
 159    my @stat      = stat($phys_path);
 160    my $in_use    = $uselist->in_use($virtual.$file);
 161    my $too_large = $config->{'max_file_size'} && $stat[7] > $config->{'max_file_size'};
 162
 163    my $ftpl = new Template;
 164    $ftpl->read_file($config->{'templates'}->{'dirlist_file'});
 165
 166    $ftpl->fillin("FILE",$virt_path);
 167    $ftpl->fillin("FILE_NAME",encode_entities($file));
 168    $ftpl->fillin("SIZE",$stat[7]);
 169    $ftpl->fillin("DATE",encode_entities(strftime($config->{'timeformat'},localtime($stat[9]))));
 170    $ftpl->fillin("URL",equal_url($config->{'httproot'},$virt_path));
 171
 172    $ftpl->parse_if_block("not_readable",not -r $phys_path);
 173    $ftpl->parse_if_block("binary",-B $phys_path);
 174    $ftpl->parse_if_block("readonly",not -w $phys_path);
 175
 176    $ftpl->parse_if_block("viewable",-r $phys_path && -T $phys_path && not $too_large);
 177    $ftpl->parse_if_block("editable",(-r $phys_path && -w $phys_path && -T $phys_path && not $too_large) && not $in_use);
 178
 179    $ftpl->parse_if_block("in_use",$in_use);
 180    $ftpl->parse_if_block("unused",not $in_use);
 181
 182    $ftpl->parse_if_block("too_large",$config->{'max_file_size'} && $stat[7] > $config->{'max_file_size'});
 183
 184    $ftpl->parse_if_block("users",$users && -o $phys_path);
 185
 186    $dirlist .= $ftpl->get_template;
 187   }
 188
 189   $tpl->read_file($config->{'templates'}->{'dirlist'});
 190
 191   $tpl->fillin("DIRLIST",$dirlist);
 192   $tpl->fillin("DIR",encode_entities($virtual));
 193   $tpl->fillin("SCRIPT",$script);
 194   $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
 195
 196   $tpl->parse_if_block("dir_writeable",$dir_writeable);
 197  }
 198  else
 199  {
 200   # View a file
 201
 202   return error($config->{'errors'}->{'no_view'},$upper_path) unless(-r $physical);
 203
 204   # Check on binary files
 205   # We have to do it in this way, or empty files
 206   # will be recognized as binary files
 207
 208   unless(-T $physical)
 209   {
 210    # Binary file
 211
 212    return error($config->{'errors'}->{'binary'},$upper_path);
 213   }
 214   else
 215   {
 216    # Text file
 217
 218    if($config->{'max_file_size'} && -s $physical > $config->{'max_file_size'})
 219    {
 220     return error($config->{'errors'}->{'file_too_large'},$upper_path,{SIZE => $config->{'max_file_size'}})
 221    }
 222    else
 223    {
 224     my $content =  file_read($physical);
 225     $$content   =~ s/\015\012|\012|\015/\n/g;
 226
 227     $tpl->read_file($config->{'templates'}->{'viewfile'});
 228
 229     $tpl->fillin("FILE",encode_entities($virtual));
 230     $tpl->fillin("DIR",$upper_path);
 231     $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
 232     $tpl->fillin("SCRIPT",$script);
 233
 234     $tpl->parse_if_block("editable",-w $physical && $uselist->unused($virtual));
 235
 236     $tpl->fillin("CONTENT",encode_entities($$content));
 237    }
 238   }
 239  }
 240
 241  my $output  = header(-type => "text/html");
 242  $output    .= $tpl->get_template;
 243
 244  return \$output;
 245 }
 246
 247 # exec_beginedit
 248 #
 249 # Lock a file and display a form to edit it
 250 #
 251 # Params: 1. Reference to user input hash
 252 #         2. Reference to config hash
 253 #
 254 # Return: Output of the command (Scalar Reference)
 255
 256 sub exec_beginedit($$)
 257 {
 258  my ($data,$config) = @_;
 259  my $physical       = $data->{'physical'};
 260  my $virtual        = $data->{'virtual'};
 261  my $dir            = upper_path($virtual);
 262  my $uselist        = $data->{'uselist'};
 263
 264  return error($config->{'errors'}->{'editdir'},$dir)                    if(-d $physical);
 265  return error($config->{'errors'}->{'in_use'}, $dir,{FILE => $virtual}) if($uselist->in_use($virtual));
 266  return error($config->{'errors'}->{'no_edit'},$dir)                    unless(-r $physical && -w $physical);
 267
 268  # Check on binary files
 269
 270  unless(-T $physical)
 271  {
 272   # Binary file
 273
 274   return error($config->{'errors'}->{'binary'},$dir);
 275  }
 276  else
 277  {
 278   if($config->{'max_file_size'} && -s $physical > $config->{'max_file_size'})
 279   {
 280    return error($config->{'errors'}->{'file_too_large'},$dir,{SIZE => $config->{'max_file_size'}})
 281   }
 282   else
 283   {
 284    # Text file
 285
 286    $uselist->add_file($virtual);
 287    $uselist->save;
 288
 289    my $content =  file_read($physical);
 290    $$content   =~ s/\015\012|\012|\015/\n/g;
 291
 292    my $tpl = new Template;
 293    $tpl->read_file($config->{'templates'}->{'editfile'});
 294
 295    $tpl->fillin("FILE",$virtual);
 296    $tpl->fillin("DIR",$dir);
 297    $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
 298    $tpl->fillin("SCRIPT",$script);
 299    $tpl->fillin("CONTENT",encode_entities($$content));
 300
 301    my $output = header(-type => "text/html");
 302    $output   .= $tpl->get_template;
 303
 304    return \$output;
 305   }
 306  }
 307 }
 308
 309 # exec_canceledit()
 310 #
 311 # Abort file editing
 312 #
 313 # Params: 1. Reference to user input hash
 314 #         2. Reference to config hash
 315 #
 316 # Return: Output of the command (Scalar Reference)
 317
 318 sub exec_canceledit($$)
 319 {
 320  my ($data,$config) = @_;
 321  my $virtual        = $data->{'virtual'};
 322
 323  file_unlock($data->{'uselist'},$virtual);
 324  return devedit_reload({command => 'show', file => upper_path($virtual)});
 325 }
 326
 327 # exec_endedit()
 328 #
 329 # Save a file, unlock it and return to directory view
 330 #
 331 # Params: 1. Reference to user input hash
 332 #         2. Reference to config hash
 333 #
 334 # Return: Output of the command (Scalar Reference)
 335
 336 sub exec_endedit($$)
 337 {
 338  my ($data,$config) = @_;
 339  my $physical       = $data->{'physical'};
 340  my $virtual        = $data->{'virtual'};
 341  my $dir            = upper_path($virtual);
 342  my $content        = $data->{'cgi'}->param('filecontent');
 343  my $uselist        = $data->{'uselist'};
 344
 345  # We already unlock the file at the beginning of the subroutine,
 346  # because if we have to abort this routine, the file keeps locked.
 347  # No other user of Dev-Editor will access the file during this
 348  # routine because of the concept of File::UseList.
 349
 350  file_unlock($uselist,$virtual);
 351
 352  # Normalize newlines
 353
 354  $content =~ s/\015\012|\012|\015/\n/g;
 355
 356  if($data->{'cgi'}->param('encode_iso'))
 357  {
 358   # Encode all ISO-8859-1 special chars
 359
 360   $content = encode_entities($content,"\200-\377");
 361  }
 362
 363  if($data->{'cgi'}->param('saveas') && $data->{'new_physical'} ne '' && $data->{'new_virtual'} ne '')
 364  {
 365   # Create the new filename
 366
 367   $physical = $data->{'new_physical'};
 368   $virtual  = $data->{'new_virtual'};
 369
 370   # Check if someone else is editing the new file
 371
 372   return error($config->{'errors'}->{'in_use'},$dir,{FILE => $virtual}) if($uselist->in_use($virtual));
 373  }
 374
 375  return error($config->{'errors'}->{'editdir'},$dir)        if(-d $physical);
 376  return error($config->{'errors'}->{'no_edit'},$dir)        if(-e $physical && !(-r $physical && -w $physical));
 377  return error($config->{'errors'}->{'text_to_binary'},$dir) unless(-T $physical);
 378
 379  if(file_save($physical,\$content))
 380  {
 381   # Saving of the file was successful!
 382
 383   return devedit_reload({command => 'show', file => $dir});
 384  }
 385  else
 386  {
 387   return error($config->{'errors'}->{'edit_failed'},$dir,{FILE => $virtual});
 388  }
 389 }
 390
 391 # exec_mkfile()
 392 #
 393 # Create a file and return to directory view
 394 #
 395 # Params: 1. Reference to user input hash
 396 #         2. Reference to config hash
 397 #
 398 # Return: Output of the command (Scalar Reference)
 399
 400 sub exec_mkfile($$)
 401 {
 402  my ($data,$config) = @_;
 403  my $new_physical   = $data->{'new_physical'};
 404  my $new_virtual    = $data->{'new_virtual'};
 405  my $dir            = upper_path($new_virtual);
 406  $new_virtual       = encode_entities($new_virtual);
 407
 408  if($new_physical)
 409  {
 410   return error($config->{'errors'}->{'file_exists'},$dir,{FILE => $new_virtual}) if(-e $new_physical);
 411
 412   file_create($new_physical) or return error($config->{'errors'}->{'mkfile_failed'},$dir,{FILE => $new_virtual});
 413   return devedit_reload({command => 'show', file => $dir});
 414  }
 415  else
 416  {
 417   my $tpl = new Template;
 418   $tpl->read_file($config->{'templates'}->{'mkfile'});
 419
 420   $tpl->fillin("DIR","/");
 421   $tpl->fillin("SCRIPT",$script);
 422
 423   my $output = header(-type => "text/html");
 424   $output   .= $tpl->get_template;
 425
 426   return \$output;
 427  }
 428 }
 429
 430 # exec_mkdir()
 431 #
 432 # Create a directory and return to directory view
 433 #
 434 # Params: 1. Reference to user input hash
 435 #         2. Reference to config hash
 436 #
 437 # Return: Output of the command (Scalar Reference)
 438
 439 sub exec_mkdir($$)
 440 {
 441  my ($data,$config) = @_;
 442  my $new_physical   = $data->{'new_physical'};
 443  my $new_virtual    = $data->{'new_virtual'};
 444  my $dir            = upper_path($new_virtual);
 445  $new_virtual       = encode_entities($new_virtual);
 446
 447  return error($config->{'errors'}->{'file_exists'},$dir,{FILE => $new_virtual}) if(-e $new_physical);
 448
 449  if($new_physical)
 450  {
 451   mkdir($new_physical,0777) or return error($config->{'errors'}->{'mkdir_failed'},$dir,{DIR => $new_virtual});
 452   return devedit_reload({command => 'show', file => $dir});
 453  }
 454  else
 455  {
 456   my $tpl = new Template;
 457   $tpl->read_file($config->{'templates'}->{'mkdir'});
 458
 459   $tpl->fillin("DIR","/");
 460   $tpl->fillin("SCRIPT",$script);
 461
 462   my $output = header(-type => "text/html");
 463   $output   .= $tpl->get_template;
 464
 465   return \$output;
 466  }
 467 }
 468
 469 # exec_upload()
 470 #
 471 # Upload a file
 472 #
 473 # Params: 1. Reference to user input hash
 474 #         2. Reference to config hash
 475 #
 476 # Return: Output of the command (Scalar Reference)
 477
 478 sub exec_upload($$)
 479 {
 480  my ($data,$config) = @_;
 481  my $physical       = $data->{'physical'};
 482  my $virtual        = $data->{'virtual'};
 483  my $cgi            = $data->{'cgi'};
 484
 485  return error($config->{'errors'}->{'no_directory'},upper_path($virtual),{FILE => $virtual}) unless(-d $physical);
 486  return error($config->{'errors'}->{'dir_no_create'},$virtual,{DIR => $virtual})             unless(-w $physical);
 487
 488  if(my $uploaded_file = $cgi->param('uploaded_file'))
 489  {
 490   # Process file upload
 491
 492   my $filename  = file_name($uploaded_file);
 493   my $file_phys = $physical."/".$filename;
 494   my $file_virt = $virtual.$filename;
 495
 496   return error($config->{'errors'}->{'in_use'},$virtual,{FILE => $file_virt})      if($data->{'uselist'}->in_use($file_virt));
 497   return error($config->{'errors'}->{'file_exists'},$virtual,{FILE => $file_virt}) if(-e $file_phys && not $cgi->param('overwrite'));
 498
 499   my $ascii     = $cgi->param('ascii');
 500   my $handle    = $cgi->upload('uploaded_file');
 501
 502   local *FILE;
 503
 504   open(FILE,">".$file_phys) or return error($config->{'errors'}->{'mkfile_failed'},$virtual,{FILE => $file_virt});
 505   binmode(FILE) unless($ascii);
 506
 507   # Read transferred file and write it to disk
 508
 509   read($handle, my $data, -s $handle);
 510   $data =~ s/\015\012|\012|\015/\n/g if($ascii); # Replace line separators if transferring in ASCII mode
 511   print FILE $data;
 512
 513   close(FILE);
 514
 515   return devedit_reload({command => "show", file => $virtual});
 516  }
 517  else
 518  {
 519   my $tpl = new Template;
 520   $tpl->read_file($config->{'templates'}->{'upload'});
 521
 522   $tpl->fillin("DIR",$virtual);
 523   $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
 524   $tpl->fillin("SCRIPT",$script);
 525
 526   my $output = header(-type => "text/html");
 527   $output   .= $tpl->get_template;
 528
 529   return \$output;
 530  }
 531 }
 532
 533 # exec_copy()
 534 #
 535 # Copy a file and return to directory view
 536 #
 537 # Params: 1. Reference to user input hash
 538 #         2. Reference to config hash
 539 #
 540 # Return: Output of the command (Scalar Reference)
 541
 542 sub exec_copy($$)
 543 {
 544  my ($data,$config) = @_;
 545  my $physical       = $data->{'physical'};
 546  my $virtual        = encode_entities($data->{'virtual'});
 547  my $dir            = upper_path($virtual);
 548  my $new_physical   = $data->{'new_physical'};
 549
 550  return error($config->{'errors'}->{'dircopy'},upper_path($virtual)) if(-d $physical);
 551  return error($config->{'errors'}->{'no_copy'},upper_path($virtual)) unless(-r $physical);
 552
 553  if($new_physical)
 554  {
 555   my $new_virtual = $data->{'new_virtual'};
 556   my $new_dir     = upper_path($new_virtual);
 557   $new_virtual    = encode_entities($new_virtual);
 558
 559   if(-e $new_physical)
 560   {
 561    return error($config->{'errors'}->{'exist_edited'},$new_dir,{FILE => $new_virtual}) if($data->{'uselist'}->in_use($data->{'new_virtual'}));
 562
 563    if(-d $new_physical)
 564    {
 565     return error($config->{'errors'}->{'dir_replace'},$new_dir);
 566    }
 567    elsif(not $data->{'cgi'}->param('confirmed'))
 568    {
 569     my $tpl = new Template;
 570     $tpl->read_file($config->{'templates'}->{'confirm_replace'});
 571
 572     $tpl->fillin("FILE",$virtual);
 573     $tpl->fillin("NEW_FILE",$new_virtual);
 574     $tpl->fillin("NEW_FILENAME",file_name($new_virtual));
 575     $tpl->fillin("NEW_DIR",$new_dir);
 576     $tpl->fillin("DIR",$dir);
 577
 578     $tpl->fillin("COMMAND","copy");
 579     $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
 580     $tpl->fillin("SCRIPT",$script);
 581
 582     my $output = header(-type => "text/html");
 583     $output   .= $tpl->get_template;
 584
 585     return \$output;
 586    }
 587   }
 588
 589   copy($physical,$new_physical) or return error($config->{'errors'}->{'copy_failed'},$dir,{FILE => $virtual, NEW_FILE => $new_virtual});
 590   return devedit_reload({command => 'show', file => $new_dir});
 591  }
 592  else
 593  {
 594   my $tpl = new Template;
 595   $tpl->read_file($config->{'templates'}->{'copyfile'});
 596
 597   $tpl->fillin("FILE",$virtual);
 598   $tpl->fillin("DIR",$dir);
 599   $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
 600   $tpl->fillin("SCRIPT",$script);
 601
 602   my $output = header(-type => "text/html");
 603   $output   .= $tpl->get_template;
 604
 605   return \$output;
 606  }
 607 }
 608
 609 # exec_rename()
 610 #
 611 # Rename/move a file and return to directory view
 612 #
 613 # Params: 1. Reference to user input hash
 614 #         2. Reference to config hash
 615 #
 616 # Return: Output of the command (Scalar Reference)
 617
 618 sub exec_rename($$)
 619 {
 620  my ($data,$config) = @_;
 621  my $physical       = $data->{'physical'};
 622  my $virtual        = $data->{'virtual'};
 623  my $dir            = upper_path($virtual);
 624  my $new_physical   = $data->{'new_physical'};
 625
 626  return error($config->{'errors'}->{'rename_root'},"/") if($virtual eq "/");
 627  return error($config->{'errors'}->{'no_rename'},$dir) unless(-w upper_path($physical));
 628  return error($config->{'errors'}->{'in_use'},$dir,{FILE => $virtual}) if($data->{'uselist'}->in_use($virtual));
 629
 630  if($new_physical)
 631  {
 632   my $new_virtual = $data->{'new_virtual'};
 633   my $new_dir     = upper_path($new_virtual);
 634   $new_virtual    = encode_entities($new_virtual);
 635
 636   if(-e $new_physical)
 637   {
 638    return error($config->{'errors'}->{'exist_edited'},$new_dir,{FILE => $new_virtual}) if($data->{'uselist'}->in_use($data->{'new_virtual'}));
 639
 640    if(-d $new_physical)
 641    {
 642     return error($config->{'errors'}->{'dir_replace'},$new_dir);
 643    }
 644    elsif(not $data->{'cgi'}->param('confirmed'))
 645    {
 646     my $tpl = new Template;
 647     $tpl->read_file($config->{'templates'}->{'confirm_replace'});
 648
 649     $tpl->fillin("FILE",$virtual);
 650     $tpl->fillin("NEW_FILE",$new_virtual);
 651     $tpl->fillin("NEW_FILENAME",file_name($new_virtual));
 652     $tpl->fillin("NEW_DIR",$new_dir);
 653     $tpl->fillin("DIR",$dir);
 654
 655     $tpl->fillin("COMMAND","rename");
 656     $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
 657     $tpl->fillin("SCRIPT",$script);
 658
 659     my $output = header(-type => "text/html");
 660     $output   .= $tpl->get_template;
 661
 662     return \$output;
 663    }
 664   }
 665
 666   rename($physical,$new_physical) or return error($config->{'errors'}->{'rename_failed'},$dir,{FILE => $virtual, NEW_FILE => $new_virtual});
 667   return devedit_reload({command => 'show', file => $new_dir});
 668  }
 669  else
 670  {
 671   my $tpl = new Template;
 672   $tpl->read_file($config->{'templates'}->{'renamefile'});
 673
 674   $tpl->fillin("FILE",$virtual);
 675   $tpl->fillin("DIR",$dir);
 676   $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
 677   $tpl->fillin("SCRIPT",$script);
 678
 679   my $output = header(-type => "text/html");
 680   $output   .= $tpl->get_template;
 681
 682   return \$output;
 683  }
 684 }
 685
 686 # exec_remove()
 687 #
 688 # Remove a file or a directory and return to directory view
 689 #
 690 # Params: 1. Reference to user input hash
 691 #         2. Reference to config hash
 692 #
 693 # Return: Output of the command (Scalar Reference)
 694
 695 sub exec_remove($$)
 696 {
 697  my ($data,$config) = @_;
 698  my $physical       = $data->{'physical'};
 699  my $virtual        = $data->{'virtual'};
 700  my $dir            = upper_path($virtual);
 701
 702  return error($config->{'errors'}->{'remove_root'},"/") if($virtual eq "/");
 703  return error($config->{'errors'}->{'no_delete'},$dir)  unless(-w upper_path($physical));
 704
 705  if(-d $physical)
 706  {
 707   # Remove a directory
 708
 709   if($data->{'cgi'}->param('confirmed'))
 710   {
 711    rmtree($physical);
 712    return devedit_reload({command => 'show', file => $dir});
 713   }
 714   else
 715   {
 716    my $tpl = new Template;
 717    $tpl->read_file($config->{'templates'}->{'confirm_rmdir'});
 718
 719    $tpl->fillin("DIR",$virtual);
 720    $tpl->fillin("UPPER_DIR",$dir);
 721    $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
 722    $tpl->fillin("SCRIPT",$script);
 723
 724    my $output = header(-type => "text/html");
 725    $output   .= $tpl->get_template;
 726
 727    return \$output;
 728   }
 729  }
 730  else
 731  {
 732   # Remove a file
 733
 734   return error($config->{'errors'}->{'in_use'},$dir,{FILE => $virtual}) if($data->{'uselist'}->in_use($virtual));
 735
 736   if($data->{'cgi'}->param('confirmed'))
 737   {
 738    unlink($physical) or return error($config->{'errors'}->{'delete_failed'},$dir,{FILE => $virtual});
 739    return devedit_reload({command => 'show', file => $dir});
 740   }
 741   else
 742   {
 743    my $tpl = new Template;
 744    $tpl->read_file($config->{'templates'}->{'confirm_rmfile'});
 745
 746    $tpl->fillin("FILE",$virtual);
 747    $tpl->fillin("DIR",$dir);
 748    $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
 749    $tpl->fillin("SCRIPT",$script);
 750
 751    my $output = header(-type => "text/html");
 752    $output   .= $tpl->get_template;
 753
 754    return \$output;
 755   }
 756  }
 757 }
 758
 759 # exec_chprop()
 760 #
 761 # Change the mode and the group of a file or a directory
 762 #
 763 # Params: 1. Reference to user input hash
 764 #         2. Reference to config hash
 765 #
 766 # Return: Output of the command (Scalar Reference)
 767
 768 sub exec_chprop($$)
 769 {
 770  my ($data,$config) = @_;
 771  my $physical       = $data->{'physical'};
 772  my $virtual        = $data->{'virtual'};
 773  my $dir            = upper_path($virtual);
 774
 775  return error($config->{'errors'}->{'no_users'},$dir,{FILE => $virtual})  unless($users);
 776  return error($config->{'errors'}->{'chprop_root'},"/")                   if($virtual eq "/");
 777  return error($config->{'errors'}->{'not_owner'},$dir,{FILE => $virtual}) unless(-o $physical);
 778  return error($config->{'errors'}->{'in_use'},$dir,{FILE => $virtual})    if($data->{'uselist'}->in_use($virtual));
 779
 780  my $cgi   = $data->{'cgi'};
 781  my $mode  = $cgi->param('mode');
 782  my $group = $cgi->param('group');
 783
 784  if($mode || $group)
 785  {
 786   if($mode)
 787   {
 788    # Change the mode
 789
 790    chmod(oct($mode),$physical);
 791   }
 792
 793   if($group)
 794   {
 795    # Change the group using the `chgrp` system command
 796
 797    return error($config->{'errors'}->{'invalid_group'},$dir,{GROUP => encode_entities($group)}) unless($group =~ /^[a-z0-9_]+[a-z0-9_-]*$/i);
 798    system("chgrp",$group,$physical);
 799   }
 800
 801   return devedit_reload({command => 'show', file => $dir});
 802  }
 803  else
 804  {
 805   # Display the form
 806
 807   my @stat = stat($physical);
 808   my $mode = $stat[2];
 809   my $gid  = $stat[5];
 810
 811   my $tpl = new Template;
 812   $tpl->read_file($config->{'templates'}->{'chprop'});
 813
 814   # Insert file properties into the template
 815
 816   $tpl->fillin("MODE_OCTAL",substr(sprintf("%04o",$mode),-4));
 817   $tpl->fillin("MODE_STRING",mode_string($mode));
 818   $tpl->fillin("GID",$gid);
 819
 820   if(my $group = getgrgid($gid))
 821   {
 822    $tpl->fillin("GROUP",encode_entities($group));
 823    $tpl->parse_if_block("group_detected",1);
 824   }
 825   else
 826   {
 827    $tpl->parse_if_block("group_detected",0);
 828   }
 829
 830   # Insert other information
 831
 832   $tpl->fillin("FILE",$virtual);
 833   $tpl->fillin("DIR",$dir);
 834   $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
 835   $tpl->fillin("SCRIPT",$script);
 836
 837   my $output = header(-type => "text/html");
 838   $output   .= $tpl->get_template;
 839
 840   return \$output;
 841  }
 842 }
 843
 844 # exec_unlock()
 845 #
 846 # Remove a file from the list of used files and
 847 # return to directory view
 848 #
 849 # Params: 1. Reference to user input hash
 850 #         2. Reference to config hash
 851 #
 852 # Return: Output of the command (Scalar Reference)
 853
 854 sub exec_unlock($$)
 855 {
 856  my ($data,$config) = @_;
 857  my $virtual        = $data->{'virtual'};
 858  my $uselist        = $data->{'uselist'};
 859  my $dir            = upper_path($virtual);
 860
 861  return devedit_reload({command => 'show', file => $dir}) if($uselist->unused($virtual));
 862
 863  if($data->{'cgi'}->param('confirmed'))
 864  {
 865   file_unlock($uselist,$virtual);
 866   return devedit_reload({command => 'show', file => $dir});
 867  }
 868  else
 869  {
 870   my $tpl = new Template;
 871   $tpl->read_file($config->{'templates'}->{'confirm_unlock'});
 872
 873   $tpl->fillin("FILE",$virtual);
 874   $tpl->fillin("DIR",$dir);
 875   $tpl->fillin("URL",equal_url($config->{'httproot'},$virtual));
 876   $tpl->fillin("SCRIPT",$script);
 877
 878   my $output = header(-type => "text/html");
 879   $output   .= $tpl->get_template;
 880
 881   return \$output;
 882  }
 883 }
 884
 885 # exec_about()
 886 #
 887 # Display some information about Dev-Editor
 888 #
 889 # Params: 1. Reference to user input hash
 890 #         2. Reference to config hash
 891 #
 892 # Return: Output of the command (Scalar Reference)
 893
 894 sub exec_about($$)
 895 {
 896  my ($data,$config) = @_;
 897
 898  my $tpl = new Template;
 899  $tpl->read_file($config->{'templates'}->{'about'});
 900
 901  $tpl->fillin("SCRIPT",$script);
 902
 903  # Dev-Editor's version number
 904
 905  $tpl->fillin("VERSION",$data->{'version'});
 906
 907  # Some path information
 908
 909  $tpl->fillin("SCRIPT_PHYS",encode_entities($ENV{'SCRIPT_FILENAME'}));
 910  $tpl->fillin("CONFIG_PATH",encode_entities($data->{'configfile'}));
 911  $tpl->fillin("FILE_ROOT",  encode_entities($config->{'fileroot'}));
 912  $tpl->fillin("HTTP_ROOT",  encode_entities($config->{'httproot'}));
 913
 914  # Perl
 915
 916  $tpl->fillin("PERL_PROG",encode_entities($^X));
 917  $tpl->fillin("PERL_VER", sprintf("%vd",$^V));
 918
 919  # Information about the server
 920
 921  $tpl->fillin("HTTPD",encode_entities($ENV{'SERVER_SOFTWARE'}));
 922  $tpl->fillin("OS",   encode_entities($^O));
 923  $tpl->fillin("TIME", encode_entities(strftime($config->{'timeformat'},localtime)));
 924
 925  # Process information
 926
 927  $tpl->fillin("PID",$$);
 928
 929  # Check if the functions getpwuid() and getgrgid() are available
 930
 931  if($users)
 932  {
 933   # Dev-Editor is running on a system which allows users and groups
 934   # So we display the user and the group of our process
 935
 936   my $uid = POSIX::getuid;
 937   my $gid = POSIX::getgid;
 938
 939   $tpl->parse_if_block("users",1);
 940
 941   # ID's of user and group
 942
 943   $tpl->fillin("UID",$uid);
 944   $tpl->fillin("GID",$gid);
 945
 946   # Names of user and group
 947
 948   if(my $user = getpwuid($uid))
 949   {
 950    $tpl->fillin("USER",encode_entities($user));
 951    $tpl->parse_if_block("user_detected",1);
 952   }
 953   else
 954   {
 955    $tpl->parse_if_block("user_detected",0);
 956   }
 957
 958   if(my $group = getgrgid($gid))
 959   {
 960    $tpl->fillin("GROUP",encode_entities($group));
 961    $tpl->parse_if_block("group_detected",1);
 962   }
 963   else
 964   {
 965    $tpl->parse_if_block("group_detected",0);
 966   }
 967
 968   # Process umask
 969
 970   $tpl->fillin("UMASK",sprintf("%04o",umask));
 971  }
 972  else
 973  {
 974   $tpl->parse_if_block("users",0);
 975  }
 976
 977  my $output = header(-type => "text/html");
 978  $output   .= $tpl->get_template;
 979
 980  return \$output;
 981 }
 982
 983 # it's true, baby ;-)
 984
 985 1;
 986
 987 #
 988 ### End ###