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('Get block size') . ':</h3>';
 203         echo '<p>';
 204         echo t('Send a GET query to') . ': <i>' . $web_root . 'script.php?get_block_size</i><br />';
 205         echo '<br />';
 206         echo t('Parameters') . ':<br />';
 207         echo "<b>id=</b>block_id<i> (" . t('Required') . ")</i> <br />";
 208         echo '</p>';
 209         echo '<p>' . t('This will return asked data or "Error" string.') . '<br /></p>';
 210
 211         echo '<h3>' . t('Read data in a block') . ':</h3>';
 212         echo '<p>';
 213         echo t('Send a GET query to') . ': <i>' . $web_root . 'script.php?read_block</i><br />';
 214         echo '<br />';
 215         echo t('Parameters') . ':<br />';
 216         echo "<b>id=</b>block_id<i> (" . t('Required') . ")</i> <br />";
 217         echo "<b>start=</b>byte_position_starting_from_zero<i> (" . t('Required') . ")</i> <br />";
 218         echo "<b>length=</b>length_to_read_in_bytes<i> (" . t('Required') . ")</i> <br />";
 219         echo '</p>';
 220         echo '<p>' . t('This will return asked data or "Error" string.') . '<br /></p>';
 221
 222         echo '<h3>' . t('Write data in a block') . ':</h3>';
 223         echo '<p>';
 224         echo t('Send a GET query to') . ': <i>' . $web_root . 'script.php?write_block</i><br />';
 225         echo '<br />';
 226         echo t('Parameters') . ':<br />';
 227         echo "<b>id=</b>block_id<i> (" . t('Required') . ")</i> <br />";
 228         echo "<b>code=</b>block_code<i> (" . t('Required') . ")</i> <br />";
 229         echo "<b>start=</b>byte_position_starting_from_zero<i> (" . t('Required') . ")</i> <br />";
 230         echo "<b>data=</b>data_to_write<i> (" . t('Required') . ")</i> <br />";
 231         echo '</p>';
 232         echo '<p>' . t('This will return "Ok" or "Error" string.') . '<br /></p>';
 233
 234         echo '<h3>' . t('Delete a block') . ':</h3>';
 235         echo '<p>';
 236         echo t('Send a GET query to') . ': <i>' . $web_root . 'script.php?delete_block</i><br />';
 237         echo '<br />';
 238         echo t('Parameters') . ':<br />';
 239         echo "<b>id=</b>block_id<i> (" . t('Required') . ")</i> <br />";
 240         echo "<b>code=</b>block_code<i> (" . t('Required') . ")</i> <br />";
 241         echo '</p>';
 242         echo '<p>' . t('This will return "Ok" or "Error" string.') . '<br /></p>';
 243     }
 244
 245     echo '</div><br />';
 246     require (JIRAFEAU_ROOT . 'lib/template/footer.php');
 247     exit;
 248 }
 249
 250 /* Lets use interface now. */
 251 header('Content-Type: text; charset=utf-8');
 252
 253 check_errors ();
 254 if (has_error ())
 255 {
 256     echo "Error";
 257     exit;
 258 }
 259
 260 /* Upload file */
 261 if (isset ($_FILES['file']) && is_writable (VAR_FILES)
 262     && is_writable (VAR_LINKS))
 263 {
 264     $key = '';
 265     if (isset ($_POST['key']))
 266         $key = $_POST['key'];
 267
 268     $time = time ();
 269     if (!isset ($_POST['time']))
 270         $time = JIRAFEAU_INFINITY;
 271     else
 272         switch ($_POST['time'])
 273         {
 274             case 'minute':
 275                 $time += JIRAFEAU_MINUTE;
 276                 break;
 277             case 'hour':
 278                 $time += JIRAFEAU_HOUR;
 279                 break;
 280             case 'day':
 281                 $time += JIRAFEAU_DAY;
 282                 break;
 283             case 'week':
 284                 $time += JIRAFEAU_WEEK;
 285                 break;
 286             case 'month':
 287                 $time += JIRAFEAU_MONTH;
 288                 break;
 289             default:
 290                 $time = JIRAFEAU_INFINITY;
 291                 break;
 292         }
 293     $res = jirafeau_upload ($_FILES['file'],
 294                             isset ($_POST['one_time_download']),
 295                             $key, $time, $_SERVER['REMOTE_ADDR']);
 296
 297     if (empty($res) || $res['error']['has_error'])
 298     {
 299         echo "Error";
 300         exit;
 301     }
 302     /* Print direct link. */
 303     echo $res['link'];
 304     echo NL;
 305     /* Print delete link. */
 306     echo $res['delete_link'];
 307 }
 308 elseif (isset ($_GET['h']))
 309 {
 310     $link_name = $_GET['h'];
 311     $key = '';
 312     if (isset ($_POST['key']))
 313         $key = $_POST['key'];
 314     $d = '';
 315     if (isset ($_GET['d']))
 316         $d = $_GET['d'];
 317
 318     if (!preg_match ('/[0-9a-zA-Z_-]{22}$/', $link_name))
 319     {
 320         echo "Error";
 321         exit;
 322     }
 323
 324     $link = jirafeau_get_link ($link_name);
 325     if (count ($link) == 0)
 326     {
 327         echo "Error";
 328         exit;
 329     }
 330     if (strlen ($d) > 0 && $d == $link['link_code'])
 331     {
 332         jirafeau_delete_link ($link_name);
 333         echo "Ok";
 334         exit;
 335     }
 336     if ($link['time'] != JIRAFEAU_INFINITY && time () > $link['time'])
 337     {
 338         jirafeau_delete_link ($link_name);
 339         echo "Error";
 340         exit;
 341     }
 342     if (strlen ($link['key']) > 0 && md5 ($key) != $link['key'])
 343     {
 344         echo "Error";
 345         exit;
 346     }
 347     $p = s2p ($link['md5']);
 348     if (!file_exists (VAR_FILES . $p . $link['md5']))
 349     {
 350         echo "Error";
 351         exit;
 352     }
 353
 354     /* Read file. */
 355     header ('Content-Length: ' . $link['file_size']);
 356     header ('Content-Type: ' . $link['mime_type']);
 357     header ('Content-Disposition: attachment; filename="' .
 358             $link['file_name'] . '"');
 359
 360     $r = fopen (VAR_FILES . $p . $link['md5'], 'r');
 361     while (!feof ($r))
 362     {
 363         print fread ($r, 1024);
 364         ob_flush();
 365     }
 366     fclose ($r);
 367
 368     if ($link['onetime'] == 'O')
 369         jirafeau_delete_link ($link_name);
 370     exit;
 371 }
 372 elseif (isset ($_GET['get_capacity']))
 373 {
 374     echo min (jirafeau_ini_to_bytes (ini_get ('post_max_size')),
 375               jirafeau_ini_to_bytes (ini_get ('upload_max_filesize')));
 376 }
 377 elseif (isset ($_GET['get_version']))
 378 {
 379     echo JIRAFEAU_VERSION;
 380 }
 381 elseif (isset ($_GET['lang']))
 382 {
 383     $l=$_GET['lang'];
 384     if ($l == "bash")
 385     {
 386 ?>
 387 #!/bin/bash
 388
 389 # This script has been auto-generated by Jirafeau but you can still edit
 390 # options below.
 391
 392 # Config
 393 proxy='' # ex: proxy='proxysever.test.com:3128' or set JIRAFEAU_PROXY global variable
 394 url='<?php echo $cfg['web_root'] . 'script.php'; ?>' # or set JIRAFEAU_URL ex: url='http://mysite/jirafeau/script.php'
 395 time='none' # minute, hour, day, week, month or none. Or set JIRAFEAU_TIME.
 396 one_time='' # ex: one_time="1" or set JIRAFEAU_ONE_TIME.
 397 curl='' # curl path to download or set JIRAFEAU_CURL_PATH.
 398 # End of config
 399
 400 if [ -n "$JIRAFEAU_PROXY" ]; then
 401     proxy="$JIRAFEAU_PROXY"
 402 fi
 403
 404 if [ -n "$JIRAFEAU_URL" ]; then
 405     url="$JIRAFEAU_URL"
 406 fi
 407
 408 if [ -z "$url" ]; then
 409     echo "Please set url in script parameters or export JIRAFEAU_URL"
 410 fi
 411
 412 if [ -n "$JIRAFEAU_TIME" ]; then
 413     time="$JIRAFEAU_TIME"
 414 fi
 415
 416 if [ -n "$JIRAFEAU_ONE_TIME" ]; then
 417     one_time='1'
 418 fi
 419
 420 if [ -z "$curl" ]; then
 421     curl="$JIRAFEAU_CURL_PATH"
 422 fi
 423
 424 if [ -z "$curl" ] && [ -e "/usr/bin/curl" ]; then
 425     curl="/usr/bin/curl"
 426 fi
 427
 428 if [ -z "$curl" ] && [ -e "/bin/curl.exe" ]; then
 429     curl="/bin/curl.exe"
 430 fi
 431
 432 if [ -z "$curl" ]; then
 433     echo "Please set your curl binary path (by editing this script or export JIRAFEAU_CURL_PATH global variable)."
 434     exit
 435 fi
 436
 437 if [ -z "$2" ]; then
 438     echo "man:"
 439     echo "    $0 send PATH [PASSWORD]"
 440     echo "    $0 get URL [PASSWORD]"
 441     echo "    $0 delete URL"
 442     echo ""
 443     echo "Global variables to export:"
 444     echo "    JIRAFEAU_PROXY : example: proxysever.test.com:3128"
 445     echo "    JIRAFEAU_URL : example: http://mysite/jirafeau/script.php"
 446     echo "    JIRAFEAU_TIME : minute, hour, day, week, month or none"
 447     echo "    JIRAFEAU_ONE_TIME : set anything or set empty"
 448     echo "    JIRAFEAU_CURL : path to your curl binary"
 449
 450     exit 0
 451 fi
 452
 453 if [ -n "$proxy" ]; then
 454     proxy="-x $proxy"
 455 fi
 456
 457 options=''
 458 if [ -n "$one_time" ]; then
 459     options="$options -F one_time_download=1"
 460 fi
 461
 462 password=''
 463 if [ -n "$3" ]; then
 464     password="$3"
 465     options="$options -F key=$password"
 466 fi
 467
 468 if [ "$1" == "send" ]; then
 469     if [ ! -f "$2" ]; then
 470         echo "File \"$2\" does not exists."
 471         exit
 472     fi
 473
 474     # Ret result
 475     res=$($curl -X POST --http1.0 $proxy $options \
 476                   -F "time=$time" \
 477                   -F "file=@$2" \
 478                   $url)
 479
 480     if [[ "$res" == "Error" ]]; then
 481         echo "Error while uploading."
 482         exit
 483     fi
 484
 485     # Not using head or tail to minimise command dependencies
 486     code=$(cnt=0; echo "$res" | while read l; do
 487         if [[ "$cnt" == "0" ]]; then
 488             echo "$l"
 489         fi
 490         cnt=$(( cnt + 1 ))
 491         done)
 492     del_code=$(cnt=0; echo "$res" | while read l; do
 493         if [[ "$cnt" == "1" ]]; then
 494             echo "$l"
 495         fi
 496         cnt=$(( cnt + 1 ))
 497         done)
 498     echo "${url}?h=$code"
 499     echo "${url}?h=$code&d=$del_code"
 500 elif [ "$1" == "get" ]; then
 501     if [ -z "$password" ]; then
 502         $curl $proxy -OJ "$2"
 503     else
 504         $curl $proxy -OJ -X POST -F key=$password "$2"
 505     fi
 506 elif [ "$1" == "delete" ]; then
 507     $curl $proxy "$2"
 508 fi
 509 <?php
 510     }
 511     else
 512     {
 513         echo "Error";
 514         exit;
 515     }
 516 }
 517 /* Initialize an asynchronous upload. */
 518 elseif (isset ($_GET['init_async']))
 519 {
 520     if (!isset ($_POST['filename']))
 521     {
 522         echo "Error";
 523         exit;
 524     }
 525
 526     $type = '';
 527     if (isset ($_POST['type']))
 528         $type = $_POST['type'];
 529
 530     $key = '';
 531     if (isset ($_POST['password']))
 532         $key = $_POST['password'];
 533
 534     $time = time ();
 535     if (!isset ($_POST['time']))
 536         $time = JIRAFEAU_INFINITY;
 537     else
 538         switch ($_POST['time'])
 539         {
 540             case 'minute':
 541                 $time += JIRAFEAU_MINUTE;
 542                 break;
 543             case 'hour':
 544                 $time += JIRAFEAU_HOUR;
 545                 break;
 546             case 'day':
 547                 $time += JIRAFEAU_DAY;
 548                 break;
 549             case 'week':
 550                 $time += JIRAFEAU_WEEK;
 551                 break;
 552             case 'month':
 553                 $time += JIRAFEAU_MONTH;
 554                 break;
 555             default:
 556                 $time = JIRAFEAU_INFINITY;
 557                 break;
 558         }
 559     echo jirafeau_async_init ($_POST['filename'],
 560                               $type,
 561                               isset ($_POST['one_time_download']),
 562                               $key,
 563                               $time,
 564                               $_SERVER['REMOTE_ADDR']);
 565 }
 566 /* Continue an asynchronous upload. */
 567 elseif (isset ($_GET['push_async']))
 568 {
 569     if ((!isset ($_POST['ref']))
 570         || (!isset ($_FILES['data']))
 571         || (!isset ($_POST['code'])))
 572         echo "Error";
 573     else
 574         echo jirafeau_async_push ($_POST['ref'], $_FILES['data'], $_POST['code']);
 575 }
 576 /* Finalize an asynchronous upload. */
 577 elseif (isset ($_GET['end_async']))
 578 {
 579     if (!isset ($_POST['ref'])
 580         || !isset ($_POST['code']))
 581         echo "Error";
 582     else
 583         echo jirafeau_async_end ($_POST['ref'], $_POST['code']);
 584 }
 585 /* Initialize block. */
 586 elseif (isset ($_GET['init_block']) && $cfg['enable_blocks'])
 587 {
 588     if (!isset ($_POST['size']))
 589         echo "Error";
 590     else
 591         echo jirafeau_block_init ($_POST['size']);
 592 }
 593 /* Get block size. */
 594 elseif (isset ($_GET['get_block_size']) && $cfg['enable_blocks'])
 595 {
 596     if (!isset ($_POST['id']))
 597         echo "Error";
 598     else
 599         echo jirafeau_block_get_size ($_POST['id']);
 600 }
 601 /* Read data in block. */
 602 elseif (isset ($_GET['read_block']) && $cfg['enable_blocks'])
 603 {
 604     if (!isset ($_POST['id'])
 605         || !isset ($_POST['start'])
 606         || !isset ($_POST['length']))
 607         echo "Error";
 608     else
 609         jirafeau_block_read ($_POST['id'], $_POST['start'], $_POST['length']);
 610 }
 611 /* Write data in block. */
 612 elseif (isset ($_GET['write_block']) && $cfg['enable_blocks'])
 613 {
 614     if (!isset ($_POST['id'])
 615         || !isset ($_POST['start'])
 616         || !isset ($_FILES['data'])
 617         || !isset ($_POST['code']))
 618         echo "Error";
 619     else
 620         echo jirafeau_block_write ($_POST['id'], $_POST['start'], $_FILES['data'], $_POST['code']);
 621 }
 622 /* Delete block. */
 623 elseif (isset ($_GET['delete_block']) && $cfg['enable_blocks'])
 624 {
 625     if (!isset ($_POST['id'])
 626         || !isset ($_POST['code']))
 627         echo "Error";
 628     else
 629         echo jirafeau_block_delete ($_POST['id'], $_POST['code']);
 630 }
 631 else
 632     echo "Error";
 633 exit;
 634 ?>