script.php

   1 <?php
   2 /*
   3  *  Jirafeau, your web file repository
   4  *  Copyright (C) 2012  Jerome Jutteau <j.jutteau@gmail.com>
   5  *
   6  *  This program is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU Affero General Public License as
   8  *  published by the Free Software Foundation, either version 3 of the
   9  *  License, or (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU Affero General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU Affero General Public License
  17  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 /*
  21  * This file permits to easyly script file sending, receiving, deleting, ...
  22  * If you don't want this feature, you can simply delete this file from your
  23  * web directory.
  24  */
  25
  26 define ('JIRAFEAU_ROOT', dirname (__FILE__) . '/');
  27
  28 require (JIRAFEAU_ROOT . 'lib/config.php');
  29 require (JIRAFEAU_ROOT . 'lib/settings.php');
  30 require (JIRAFEAU_ROOT . 'lib/functions.php');
  31 require (JIRAFEAU_ROOT . 'lib/lang.php');
  32
  33  global $script_langages;
  34  $script_langages = array ('bash' => 'Bash');
  35
  36 /* Operations may take a long time.
  37  * Be sure PHP's safe mode is off.
  38  */
  39  set_time_limit(0);
  40
  41 if ($_SERVER['REQUEST_METHOD'] == "GET" && count ($_GET) == 0)
  42 {
  43     require (JIRAFEAU_ROOT . 'lib/template/header.php');
  44     check_errors ();
  45     if (has_error ())
  46     {
  47         show_errors ();
  48         require (JIRAFEAU_ROOT . 'lib/template/footer.php');
  49         exit;
  50     }
  51     echo '<div class="info">';
  52     echo '<h2>' . t('Welcome to Jirafeau\'s query interface') . '</h2>';
  53     echo '<p>';
  54     echo t('This interface permits to script your uploads and downloads.') .
  55             ' ' . t('The instructions above show how to query this interface.');
  56     echo '</p>';
  57
  58     echo '<h3>' . t('Get Jirafeau\'s version') . ':</h3>';
  59     echo '<p>';
  60     echo t('Send a GET query to') . ': <i>' . $web_root . 'script.php</i><br />';
  61     echo '<br />';
  62     echo t('Parameters') . ':<br />';
  63     echo "<b>get_version=</b>1<i> (" . t('Required') . ")</i> <br />";
  64     echo '</p>';
  65     echo '<p>' . t('This will return brut text content.') . ' ' .
  66             t('First line is the version number.') . '<br /></p>';
  67     echo '<p>';
  68     echo t('Example') . ": <a href=\"" . $web_root . "script.php?get_version=1\">" . $web_root . "script.php?get_version=1</a> ";
  69     echo '</p>';
  70
  71     echo '<h3>' . t('Get server capacity') . ':</h3>';
  72     echo '<p>';
  73     echo t('Send a GET query to') . ': <i>' . $web_root . 'script.php</i><br />';
  74     echo '<br />';
  75     echo t('Parameters') . ':<br />';
  76     echo "<b>get_capacity=</b>1<i> (" . t('Required') . ")</i> <br />";
  77     echo '</p>';
  78     echo '<p>' . t('This will return brut text content.') . ' ' .
  79             t('First line is the server capacity (in Bytes).') . '<br /></p>';
  80     echo '<p>';
  81     echo t('Example') . ": <a href=\"" . $web_root . "script.php?get_capacity=1\">" . $web_root . "script.php?get_capacity=1</a> ";
  82     echo '</p>';
  83
  84     echo '<h3>' . t('Upload a file') . ':</h3>';
  85     echo '<p>';
  86     echo t('Send a POST query to') . ': <i>' . $web_root . 'script.php</i><br />';
  87     echo '<br />';
  88     echo t('Parameters') . ':<br />';
  89     echo "<b>file=</b>C:\\your\\file\\path<i> (" . t('Required') . ")</i> <br />";
  90     echo "<b>time=</b>[minute|hour|day|week|month|none]<i> (" . t('Optional') . ', '. t('default: none') . ")</i> <br />";
  91     echo "<b>password=</b>your_password<i> (" . t('Optional') . ")</i> <br />";
  92     echo "<b>one_time_download=</b>1<i> (" . t('Optional') . ")</i> <br />";
  93     echo '</p>';
  94     echo '<p>' . t('This will return brut text content.') . ' ' .
  95          t('First line is the download reference and the second line the delete code.') . '<br /></p>';
  96
  97     echo '<h3>' . t('Get a file') . ':</h3>';
  98     echo '<p>';
  99     echo t('Send a GET query to') . ': <i>' . $web_root . 'script.php</i><br />';
 100     echo '<br />';
 101     echo t('Parameters') . ':<br />';
 102     echo "<b>h=</b>your_download_reference<i> (" . t('Required') . ")</i> <br />";
 103     echo '</p>';
 104     echo '<p>';
 105     echo t('If a password has been set, send a POST request with it.');
 106     echo '<br />';
 107     echo t('Parameters') . ':<br />';
 108     echo "<b>password=</b>your_password<i> (" . t('Optional') . ")</i> <br />";
 109     echo '</p>';
 110     echo '<p>';
 111     echo t('Example') . ": <a href=\"" . $web_root . "script.php?h=30ngy0hsDcpfrF8zR7x9iU\">" . $web_root . "script.php?h=30ngy0hsDcpfrF8zR7x9iU</a> ";
 112     echo '</p>';
 113
 114     echo '<h3>' . t('Delete a file') . ':</h3>';
 115     echo '<p>';
 116     echo t('Send a GET query to') . ': <i>' . $web_root . 'script.php</i><br />';
 117     echo '<br />';
 118     echo t('Parameters') . ':<br />';
 119     echo "<b>h=</b>your_download_reference<i> (" . t('Required') . ")</i> <br />";
 120     echo "<b>d=</b>yout_delete_code<i> (" . t('Required') . ")</i> <br />";
 121     echo '</p>';
 122     echo '<p>' . t('This will return "Ok" if succeded, "Error" otherwhise.') . '<br /></p>';
 123     echo '<p>';
 124     echo t('Example') . ": <a href=\"" . $web_root . "script.php?h=30ngy0hsDcpfrF8zR7x9iU&amp;d=0d210a952\">" . $web_root . "script.php?h=30ngy0hsDcpfrF8zR7x9iU&amp;d=0d210a952</a> ";
 125     echo '</p>';
 126
 127     echo '<h3>' . t('Get a generated scripts') . ':</h3>';
 128     echo '<p>';
 129     echo t('Send a GET query to') . ': <i>' . $web_root . 'script.php</i><br />';
 130     echo '<br />';
 131     echo t('Parameters') . ':<br />';
 132     echo "<b>lang=</b>[";
 133     foreach ($script_langages as $lang => $name)
 134         echo $lang;
 135     echo "]<i> (" . t('Required') . ")</i> <br />";
 136     echo '</p>';
 137     echo '<p>' . t('This will return brut text content of the code.') . '<br /></p>';
 138     echo '<p>';
 139     echo t('Example') . ": <br />";
 140     foreach ($script_langages as $lang => $name)
 141         echo "$name: <a href=\"" . $web_root . "script.php?lang=$lang\">" . $web_root . "script.php?lang=$lang</a> ";
 142     echo '</p>';
 143
 144     echo '<h3>' . t('Initalize a asynchronous transfert') . ':</h3>';
 145     echo '<p>';
 146     echo t('The goal is to permit to transfert big file, chunk by chunk.') . ' ';
 147     echo t('Chunks of data must be sent in order.');
 148     echo '</p>';
 149     echo '<p>';
 150     echo t('Send a GET query to') . ': <i>' . $web_root . 'script.php?init_async</i><br />';
 151     echo '<br />';
 152     echo t('Parameters') . ':<br />';
 153     echo "<b>filename=</b>file_name.ext<i> (" . t('Required') . ")</i> <br />";
 154     echo "<b>type=</b>MIME_TYPE<i> (" . t('Optional') . ")</i> <br />";
 155     echo "<b>time=</b>[minute|hour|day|week|month|none]<i> (" . t('Optional') . ', '. t('default: none') . ")</i> <br />";
 156     echo "<b>password=</b>your_password<i> (" . t('Optional') . ")</i> <br />";
 157     echo "<b>one_time_download=</b>1<i> (" . t('Optional') . ")</i> <br />";
 158     echo '</p>';
 159     echo '<p>' . t('This will return brut text content.') . ' ' .
 160          t('First line is the asynchronous transfert reference and the second line the code to use in the next operation.') . '<br /></p>';
 161
 162     echo '<h3>' . t('Push data during asynchronous transfert') . ':</h3>';
 163     echo '<p>';
 164     echo t('Send a GET query to') . ': <i>' . $web_root . 'script.php?push_async</i><br />';
 165     echo '<br />';
 166     echo t('Parameters') . ':<br />';
 167     echo "<b>ref=</b>async_reference<i> (" . t('Required') . ")</i> <br />";
 168     echo "<b>data=</b>data_chunk<i> (" . t('Required') . ")</i> <br />";
 169     echo "<b>code=</b>last_provided_code<i> (" . t('Required') . ")</i> <br />";
 170     echo '</p>';
 171     echo '<p>' . t('This will return brut text content.') . ' ' .
 172          t('Returns the next code to use.') . '<br /></p>';
 173
 174     echo '<h3>' . t('Finalize asynchronous transfert') . ':</h3>';
 175     echo '<p>';
 176     echo t('Send a GET query to') . ': <i>' . $web_root . 'script.php?end_async</i><br />';
 177     echo '<br />';
 178     echo t('Parameters') . ':<br />';
 179     echo "<b>ref=</b>async_reference<i> (" . t('Required') . ")</i> <br />";
 180     echo "<b>code=</b>last_provided_code<i> (" . t('Required') . ")</i> <br />";
 181     echo '</p>';
 182     echo '<p>' . t('This will return brut text content.') . ' ' .
 183          t('First line is the download reference and the second line the delete code.') . '<br /></p>';
 184
 185     if ($cfg['enable_blocks'])
 186     {
 187         echo '<h3>' . t('Create a data block') . ':</h3>';
 188         echo '<p>';
 189         echo t('This interface permits to create a block of data filled with zeros.') .
 190             ' ' . t('You can read selected parts, write (using a code) and delete the block.') .
 191             ' ' . t('Blocks may be removed after a month of non usage.');
 192         echo '</p>';
 193         echo '<p>';
 194         echo t('Send a GET query to') . ': <i>' . $web_root . 'script.php?init_block</i><br />';
 195         echo '<br />';
 196         echo t('Parameters') . ':<br />';
 197         echo "<b>size=</b>size_in_bytes<i> (" . t('Required') . ")</i> <br />";
 198         echo '</p>';
 199         echo '<p>' . t('This will return brut text content.') . ' ' .
 200              t('First line is a block id the second line the edit/delete code.') . '<br /></p>';
 201
 202         echo '<h3>' . t('Read data in a block') . ':</h3>';
 203         echo '<p>';
 204         echo t('Send a GET query to') . ': <i>' . $web_root . 'script.php?read_block</i><br />';
 205         echo '<br />';
 206         echo t('Parameters') . ':<br />';
 207         echo "<b>id=</b>block_id<i> (" . t('Required') . ")</i> <br />";
 208         echo "<b>start=</b>byte_position_starting_from_zero<i> (" . t('Required') . ")</i> <br />";
 209         echo "<b>length=</b>length_to_read_in_bytes<i> (" . t('Required') . ")</i> <br />";
 210         echo '</p>';
 211         echo '<p>' . t('This will return asked data or "Error" string.') . '<br /></p>';
 212
 213         echo '<h3>' . t('Write data in a block') . ':</h3>';
 214         echo '<p>';
 215         echo t('Send a GET query to') . ': <i>' . $web_root . 'script.php?write_block</i><br />';
 216         echo '<br />';
 217         echo t('Parameters') . ':<br />';
 218         echo "<b>id=</b>block_id<i> (" . t('Required') . ")</i> <br />";
 219         echo "<b>code=</b>block_code<i> (" . t('Required') . ")</i> <br />";
 220         echo "<b>start=</b>byte_position_starting_from_zero<i> (" . t('Required') . ")</i> <br />";
 221         echo "<b>data=</b>data_to_write<i> (" . t('Required') . ")</i> <br />";
 222         echo '</p>';
 223         echo '<p>' . t('This will return "Ok" or "Error" string.') . '<br /></p>';
 224
 225         echo '<h3>' . t('Delete a block') . ':</h3>';
 226         echo '<p>';
 227         echo t('Send a GET query to') . ': <i>' . $web_root . 'script.php?delete_block</i><br />';
 228         echo '<br />';
 229         echo t('Parameters') . ':<br />';
 230         echo "<b>id=</b>block_id<i> (" . t('Required') . ")</i> <br />";
 231         echo "<b>code=</b>block_code<i> (" . t('Required') . ")</i> <br />";
 232         echo '</p>';
 233         echo '<p>' . t('This will return "Ok" or "Error" string.') . '<br /></p>';
 234     }
 235
 236     echo '</div><br />';
 237     require (JIRAFEAU_ROOT . 'lib/template/footer.php');
 238     exit;
 239 }
 240
 241 /* Lets use interface now. */
 242 header('Content-Type: text; charset=utf-8');
 243
 244 /* Upload file */
 245 if (isset ($_FILES['file']) && is_writable (VAR_FILES)
 246     && is_writable (VAR_LINKS))
 247 {
 248     $key = '';
 249     if (isset ($_POST['key']))
 250         $key = $_POST['key'];
 251
 252     $time = time ();
 253     if (!isset ($_POST['time']))
 254         $time = JIRAFEAU_INFINITY;
 255     else
 256         switch ($_POST['time'])
 257         {
 258             case 'minute':
 259                 $time += JIRAFEAU_MINUTE;
 260                 break;
 261             case 'hour':
 262                 $time += JIRAFEAU_HOUR;
 263                 break;
 264             case 'day':
 265                 $time += JIRAFEAU_DAY;
 266                 break;
 267             case 'week':
 268                 $time += JIRAFEAU_WEEK;
 269                 break;
 270             case 'month':
 271                 $time += JIRAFEAU_MONTH;
 272                 break;
 273             default:
 274                 $time = JIRAFEAU_INFINITY;
 275                 break;
 276         }
 277     $res = jirafeau_upload ($_FILES['file'],
 278                             isset ($_POST['one_time_download']),
 279                             $key, $time, $_SERVER['REMOTE_ADDR']);
 280
 281     if (empty($res) || $res['error']['has_error'])
 282     {
 283         echo "Error";
 284         exit;
 285     }
 286     /* Print direct link. */
 287     echo $res['link'];
 288     echo NL;
 289     /* Print delete link. */
 290     echo $res['delete_link'];
 291 }
 292 elseif (isset ($_GET['h']))
 293 {
 294     $link_name = $_GET['h'];
 295     $key = '';
 296     if (isset ($_POST['key']))
 297         $key = $_POST['key'];
 298     $d = '';
 299     if (isset ($_GET['d']))
 300         $d = $_GET['d'];
 301
 302     if (!preg_match ('/[0-9a-zA-Z_-]{22}$/', $link_name))
 303     {
 304         echo "Error";
 305         exit;
 306     }
 307
 308     $link = jirafeau_get_link ($link_name);
 309     if (count ($link) == 0)
 310     {
 311         echo "Error";
 312         exit;
 313     }
 314     if (strlen ($d) > 0 && $d == $link['link_code'])
 315     {
 316         jirafeau_delete_link ($link_name);
 317         echo "Ok";
 318         exit;
 319     }
 320     if ($link['time'] != JIRAFEAU_INFINITY && time () > $link['time'])
 321     {
 322         jirafeau_delete_link ($link_name);
 323         echo "Error";
 324         exit;
 325     }
 326     if (strlen ($link['key']) > 0 && md5 ($key) != $link['key'])
 327     {
 328         echo "Error";
 329         exit;
 330     }
 331     $p = s2p ($link['md5']);
 332     if (!file_exists (VAR_FILES . $p . $link['md5']))
 333     {
 334         echo "Error";
 335         exit;
 336     }
 337
 338     /* Read file. */
 339     header ('Content-Length: ' . $link['file_size']);
 340     header ('Content-Type: ' . $link['mime_type']);
 341     header ('Content-Disposition: attachment; filename="' .
 342             $link['file_name'] . '"');
 343
 344     $r = fopen (VAR_FILES . $p . $link['md5'], 'r');
 345     while (!feof ($r))
 346     {
 347         print fread ($r, 1024);
 348         ob_flush();
 349     }
 350     fclose ($r);
 351
 352     if ($link['onetime'] == 'O')
 353         jirafeau_delete_link ($link_name);
 354     exit;
 355 }
 356 elseif (isset ($_GET['get_capacity']))
 357 {
 358     echo min (jirafeau_ini_to_bytes (ini_get ('post_max_size')),
 359               jirafeau_ini_to_bytes (ini_get ('upload_max_filesize')));
 360 }
 361 elseif (isset ($_GET['get_version']))
 362 {
 363     echo JIRAFEAU_VERSION;
 364 }
 365 elseif (isset ($_GET['lang']))
 366 {
 367     $l=$_GET['lang'];
 368     if ($l == "bash")
 369     {
 370 ?>
 371 #!/bin/bash
 372
 373 # This script has been auto-generated by Jirafeau but you can still edit
 374 # options below.
 375
 376 # Config
 377 proxy='' # ex: proxy='proxysever.test.com:3128' or set JIRAFEAU_PROXY global variable
 378 url='<?php echo $cfg['web_root'] . 'script.php'; ?>' # or set JIRAFEAU_URL ex: url='http://mysite/jirafeau/script.php'
 379 time='none' # minute, hour, day, week, month or none. Or set JIRAFEAU_TIME.
 380 one_time='' # ex: one_time="1" or set JIRAFEAU_ONE_TIME.
 381 curl='' # curl path to download or set JIRAFEAU_CURL_PATH.
 382 # End of config
 383
 384 if [ -n "$JIRAFEAU_PROXY" ]; then
 385     proxy="$JIRAFEAU_PROXY"
 386 fi
 387
 388 if [ -n "$JIRAFEAU_URL" ]; then
 389     url="$JIRAFEAU_URL"
 390 fi
 391
 392 if [ -z "$url" ]; then
 393     echo "Please set url in script parameters or export JIRAFEAU_URL"
 394 fi
 395
 396 if [ -n "$JIRAFEAU_TIME" ]; then
 397     time="$JIRAFEAU_TIME"
 398 fi
 399
 400 if [ -n "$JIRAFEAU_ONE_TIME" ]; then
 401     one_time='1'
 402 fi
 403
 404 if [ -z "$curl" ]; then
 405     curl="$JIRAFEAU_CURL_PATH"
 406 fi
 407
 408 if [ -z "$curl" ] && [ -e "/usr/bin/curl" ]; then
 409     curl="/usr/bin/curl"
 410 fi
 411
 412 if [ -z "$curl" ] && [ -e "/bin/curl.exe" ]; then
 413     curl="/bin/curl.exe"
 414 fi
 415
 416 if [ -z "$curl" ]; then
 417     echo "Please set your curl binary path (by editing this script or export JIRAFEAU_CURL_PATH global variable)."
 418     exit
 419 fi
 420
 421 if [ -z "$2" ]; then
 422     echo "man:"
 423     echo "    $0 send PATH [PASSWORD]"
 424     echo "    $0 get URL [PASSWORD]"
 425     echo "    $0 delete URL"
 426     echo ""
 427     echo "Global variables to export:"
 428     echo "    JIRAFEAU_PROXY : example: proxysever.test.com:3128"
 429     echo "    JIRAFEAU_URL : example: http://mysite/jirafeau/script.php"
 430     echo "    JIRAFEAU_TIME : minute, hour, day, week, month or none"
 431     echo "    JIRAFEAU_ONE_TIME : set anything or set empty"
 432     echo "    JIRAFEAU_CURL : path to your curl binary"
 433
 434     exit 0
 435 fi
 436
 437 if [ -n "$proxy" ]; then
 438     proxy="-x $proxy"
 439 fi
 440
 441 options=''
 442 if [ -n "$one_time" ]; then
 443     options="$options -F one_time_download=1"
 444 fi
 445
 446 password=''
 447 if [ -n "$3" ]; then
 448     password="$3"
 449     options="$options -F key=$password"
 450 fi
 451
 452 if [ "$1" == "send" ]; then
 453     if [ ! -f "$2" ]; then
 454         echo "File \"$2\" does not exists."
 455         exit
 456     fi
 457
 458     # Ret result
 459     res=$($curl -X POST --http1.0 $proxy $options \
 460                   -F "time=$time" \
 461                   -F "file=@$2" \
 462                   $url)
 463
 464     if [[ "$res" == "Error" ]]; then
 465         echo "Error while uploading."
 466         exit
 467     fi
 468
 469     # Not using head or tail to minimise command dependencies
 470     code=$(cnt=0; echo "$res" | while read l; do
 471         if [[ "$cnt" == "0" ]]; then
 472             echo "$l"
 473         fi
 474         cnt=$(( cnt + 1 ))
 475         done)
 476     del_code=$(cnt=0; echo "$res" | while read l; do
 477         if [[ "$cnt" == "1" ]]; then
 478             echo "$l"
 479         fi
 480         cnt=$(( cnt + 1 ))
 481         done)
 482     echo "${url}?h=$code"
 483     echo "${url}?h=$code&d=$del_code"
 484 elif [ "$1" == "get" ]; then
 485     if [ -z "$password" ]; then
 486         $curl $proxy -OJ "$2"
 487     else
 488         $curl $proxy -OJ -X POST -F key=$password "$2"
 489     fi
 490 elif [ "$1" == "delete" ]; then
 491     $curl $proxy "$2"
 492 fi
 493 <?php
 494     }
 495     else
 496     {
 497         echo "Error";
 498         exit;
 499     }
 500 }
 501 /* Initialize an asynchronous upload. */
 502 elseif (isset ($_GET['init_async']))
 503 {
 504     if (!isset ($_POST['filename']))
 505     {
 506         echo "Error";
 507         exit;
 508     }
 509
 510     $type = '';
 511     if (isset ($_POST['type']))
 512         $type = $_POST['type'];
 513
 514     $key = '';
 515     if (isset ($_POST['password']))
 516         $key = $_POST['password'];
 517
 518     $time = time ();
 519     if (!isset ($_POST['time']))
 520         $time = JIRAFEAU_INFINITY;
 521     else
 522         switch ($_POST['time'])
 523         {
 524             case 'minute':
 525                 $time += JIRAFEAU_MINUTE;
 526                 break;
 527             case 'hour':
 528                 $time += JIRAFEAU_HOUR;
 529                 break;
 530             case 'day':
 531                 $time += JIRAFEAU_DAY;
 532                 break;
 533             case 'week':
 534                 $time += JIRAFEAU_WEEK;
 535                 break;
 536             case 'month':
 537                 $time += JIRAFEAU_MONTH;
 538                 break;
 539             default:
 540                 $time = JIRAFEAU_INFINITY;
 541                 break;
 542         }
 543     echo jirafeau_async_init ($_POST['filename'],
 544                               $type,
 545                               isset ($_POST['one_time_download']),
 546                               $key,
 547                               $time,
 548                               $_SERVER['REMOTE_ADDR']);
 549 }
 550 /* Continue an asynchronous upload. */
 551 elseif (isset ($_GET['push_async']))
 552 {
 553     if ((!isset ($_POST['ref']))
 554         || (!isset ($_FILES['data']))
 555         || (!isset ($_POST['code'])))
 556         echo "Error";
 557     else
 558         echo jirafeau_async_push ($_POST['ref'], $_FILES['data'], $_POST['code']);
 559 }
 560 /* Finalize an asynchronous upload. */
 561 elseif (isset ($_GET['end_async']))
 562 {
 563     if (!isset ($_POST['ref'])
 564         || !isset ($_POST['code']))
 565         echo "Error";
 566     else
 567         echo jirafeau_async_end ($_POST['ref'], $_POST['code']);
 568 }
 569 /* Initialize block. */
 570 elseif (isset ($_GET['init_block']) && $cfg['enable_blocks'])
 571 {
 572     if (!isset ($_POST['size']))
 573         echo "Error";
 574     else
 575         echo jirafeau_block_init ($_POST['size']);
 576 }
 577 /* Read data in block. */
 578 elseif (isset ($_GET['read_block']) && $cfg['enable_blocks'])
 579 {
 580     if (!isset ($_POST['id'])
 581         || !isset ($_POST['start'])
 582         || !isset ($_POST['length']))
 583         echo "Error";
 584     else
 585         jirafeau_block_read ($_POST['id'], $_POST['start'], $_POST['length']);
 586 }
 587 /* Write data in block. */
 588 elseif (isset ($_GET['write_block']) && $cfg['enable_blocks'])
 589 {
 590     if (!isset ($_POST['id'])
 591         || !isset ($_POST['start'])
 592         || !isset ($_FILES['data'])
 593         || !isset ($_POST['code']))
 594         echo "Error";
 595     else
 596         echo jirafeau_block_write ($_POST['id'], $_POST['start'], $_FILES['data'], $_POST['code']);
 597 }
 598 /* Delete block. */
 599 elseif (isset ($_GET['delete_block']) && $cfg['enable_blocks'])
 600 {
 601     if (!isset ($_POST['id'])
 602         || !isset ($_POST['code']))
 603         echo "Error";
 604     else
 605         echo jirafeau_block_delete ($_POST['id'], $_POST['code']);
 606 }
 607 else
 608     echo "Error";
 609 exit;
 610 ?>