Add encryption feature (disabled by default).

[jirafeau_project.git] / file.php

diff --git a/file.php b/file.php
index edf01994e2596ba13fc80c8dc7e3e0dc0cdec319..d632beb257161ac7bb864b4393ed36eaceaf9a9f 100644 (file)
--- a/file.php
+++ b/file.php
@@ -17,124 +17,250 @@
  *  You should have received a copy of the GNU Affero General Public License
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
  *  You should have received a copy of the GNU Affero General Public License
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */

+define ('JIRAFEAU_ROOT', dirname (__FILE__) . '/');

 
 

-define('JIRAFEAU_ROOT', dirname(__FILE__) . '/');
+require (JIRAFEAU_ROOT . 'lib/lang.php');
+require (JIRAFEAU_ROOT . 'lib/config.php');
+require (JIRAFEAU_ROOT . 'lib/settings.php');
+require (JIRAFEAU_ROOT . 'lib/functions.php');

 
 

-require(JIRAFEAU_ROOT . 'lib/config.php');
-require(JIRAFEAU_ROOT . 'lib/settings.php');
-require(JIRAFEAU_ROOT . 'lib/functions.php');
+if (!isset ($_GET['h']) || empty ($_GET['h']))
+{
+    header ('Location: ' . $cfg['web_root']);
+    exit;
+}
+
+/* Operations may take a long time.
+ * Be sure PHP's safe mode is off.
+ */
+set_time_limit(0);

 
 

-if(isset($_GET['h']) && !empty($_GET['h'])) {
-  $link_name = $_GET['h'];
+$link_name = $_GET['h'];

 
 

-  $delete_code = '';
-  if(isset($_GET['d']) && !empty($_GET['d']))
+if (!preg_match ('/[0-9a-zA-Z_-]{22}$/', $link_name))
+{
+    require (JIRAFEAU_ROOT.'lib/template/header.php');
+    echo '<div class="error"><p>' . t('Sorry, the requested file is not found') . '</p></div>';
+    require (JIRAFEAU_ROOT.'lib/template/footer.php');
+    exit;
+}
+
+$link = jirafeau_get_link ($link_name);
+if (count ($link) == 0)
+{
+    require (JIRAFEAU_ROOT.'lib/template/header.php');
+    echo '<div class="error"><p>' . t('Sorry, the requested file is not found') .
+    '</p></div>';
+    require (JIRAFEAU_ROOT.'lib/template/footer.php');
+    exit;
+}
+
+$delete_code = '';
+if (isset ($_GET['d']) && !empty ($_GET['d']))

     $delete_code = $_GET['d'];
 
     $delete_code = $_GET['d'];
 

-  if(!ereg('[0-9a-f]{32}$', $link_name)) {
-    header("HTTP/1.0 404 Not Found");
+$crypt_key = '';
+if (isset ($_GET['k']) && !empty ($_GET['k']))
+    $crypt_key = $_GET['k'];
+
+$button_download = false;
+if (isset ($_GET['bd']) && !empty ($_GET['bd']))
+    $button_download = true;

 
 

-    require(JIRAFEAU_ROOT . 'lib/template/header.php');
-    echo '<div class="error"><p>Error 404: Not Found</p></div>';
-    require(JIRAFEAU_ROOT . 'lib/template/footer.php');
+$button_preview = false;
+if (isset ($_GET['bp']) && !empty ($_GET['bp']))
+    $button_preview = true;
+
+$p = s2p ($link['md5']);
+if (!file_exists (VAR_FILES . $p . $link['md5']))
+{
+    jirafeau_delete_link ($link_name);
+    require (JIRAFEAU_ROOT.'lib/template/header.php');
+    echo '<div class="error"><p>'.t('File not available.').
+    '</p></div>';
+    require (JIRAFEAU_ROOT.'lib/template/footer.php');

     exit;
     exit;

-  }
-
-  $link_file = VAR_LINKS . $link_name;
-  if(file_exists($link_file)) {
-    $content = file($link_file);
-    $file_name = trim($content[0]);
-    $mime_type = trim($content[1]);
-    $file_size = trim($content[2]);
-    $key = trim($content[3], NL);
-    $time = trim($content[4]);
-    $md5 = trim($content[5]);
-    $onetime = trim($content[6]);
-    $link_code = trim($content[9]);
-
-
-  
-    if(!file_exists(VAR_FILES . $md5)) {
-      jirafeau_delete($link_name);
-      require(JIRAFEAU_ROOT . 'lib/template/header.php');
-      echo '<div class="error"><p>' . _('File not available.') . '</p></div>';
-      require(JIRAFEAU_ROOT . 'lib/template/footer.php');
-      exit;
-    }
+}

 
 

-    if(!empty($delete_code) && $delete_code == $link_code) {
-      jirafeau_delete($link_name);
-      require(JIRAFEAU_ROOT . 'lib/template/header.php');
-      echo '<div class="message"><p>' . _('File has been deleted.') . '</p></div>';
-      require(JIRAFEAU_ROOT . 'lib/template/footer.php');
-      exit;
-    }
+if (!empty ($delete_code) && $delete_code == $link['link_code'])
+{
+    jirafeau_delete_link ($link_name);
+    require (JIRAFEAU_ROOT.'lib/template/header.php');
+    echo '<div class="message"><p>'.t('File has been deleted.').
+     '</p></div>';
+    require (JIRAFEAU_ROOT.'lib/template/footer.php');
+    exit;
+}

 
 

-    if($time != JIRAFEAU_INFINITY && time() > $time) {
-      jirafeau_delete($link_name);
-      require(JIRAFEAU_ROOT . 'lib/template/header.php');
-      echo '<div class="error"><p>' . _('The time limit of this file has expired. It has been deleted.') . '</p></div>';
-      require(JIRAFEAU_ROOT . 'lib/template/footer.php');
-      exit;
-    }
+if ($link['time'] != JIRAFEAU_INFINITY && time () > $link['time'])
+{
+    jirafeau_delete_link ($link_name);
+    require (JIRAFEAU_ROOT.'lib/template/header.php');
+    echo '<div class="error"><p>'.
+    t('The time limit of this file has expired.') . ' ' .
+    t('File has been deleted.') .
+    '</p></div>';
+    require (JIRAFEAU_ROOT . 'lib/template/footer.php');
+    exit;
+}

 
 

-    if(!empty($key)) {
-    if(!isset($_POST['key'])) {
-      require(JIRAFEAU_ROOT . 'lib/template/header.php');
-?>
-<div id="upload">
-<form action="<?php echo $_SERVER['REQUEST_URI']; ?>" method="post">
-<input type="hidden" name="jirafeau" value="<?php echo JIRAFEAU_VERSION; ?>" />
-<fieldset>
-  <legend><?php echo _('Key protection'); ?></legend>
-  <table>
-  <tr>
-    <td><?php echo _('Give the key of this file:'); ?> <input type="password" name="key" /></td>
-  </tr>
-  <tr>
-    <td><input type="submit" value="<?php echo _('I have the right to download this file'); ?>" /></td>
-  </tr>
-  </table>
-</fieldset>
-</form>
-</div>
+if (empty ($crypt_key) && $link['crypted'])
+{
+    require (JIRAFEAU_ROOT.'lib/template/header.php');
+    echo '<div class="error"><p>' . t('Sorry, the requested file is not found') .
+    '</p></div>';
+    require (JIRAFEAU_ROOT.'lib/template/footer.php');
+    exit;
+}
+
+$password_challenged = false;
+if (!empty ($link['key']))
+{
+    if (!isset ($_POST['key']))
+    {
+        require (JIRAFEAU_ROOT.'lib/template/header.php');
+        echo '<div>' .
+             '<form action = "';
+        echo $cfg['web_root'] . '/file.php';
+        echo '" ' .
+             'method = "post" id = "submit">'; ?>
+             <input type = "hidden" name = "jirafeau" value = "<?php echo JIRAFEAU_VERSION ?>"/><?php
+        echo '<fieldset>' .
+             '<legend>' . t('Password protection') .
+             '</legend><table><tr><td>' .
+             t('Give the password of this file') . ' : ' .
+             '<input type = "password" name = "key" />' .
+             '</td></tr>' .
+             '<tr><td>' .
+             t('By using our services, you accept of our'). ' <a href="' . $cfg['web_root'] . '/tos.php' . '">' . t('Term Of Service') . '</a>' .
+             '</td></tr>' .
+             '<tr><td>';
+            ?><input type="submit" id = "submit_download"  value="<?php echo t('Download'); ?>"
+            onclick="document.getElementById('submit').action='

 <?php
 <?php

-        require(JIRAFEAU_ROOT . 'lib/template/footer.php');
+        echo $cfg['web_root'] . '/file.php?h=' . $link_name . '&amp;bd=1';
+        if (!empty($crypt_key))
+            echo '&amp;k=' . urlencode($crypt_key);
+?>';
+        document.getElementById('submit_download').submit ();"/><?php
+        if ($cfg['download_page'] && $cfg['preview'])
+        {
+            ?><input type="submit" id = "submit_preview"  value="<?php echo t('Preview'); ?>"
+            onclick="document.getElementById('submit').action='
+<?php
+        echo $cfg['web_root'] . '/file.php?h=' . $link_name . '&amp;bp=1';
+        if (!empty($crypt_key))
+            echo '&amp;k=' . urlencode($crypt_key);
+?>';
+        document.getElementById('submit_preview').submit ();"/><?php
+        }
+        echo '</td></tr></table></fieldset></form></div>';
+        require (JIRAFEAU_ROOT.'lib/template/footer.php');

         exit;
         exit;

-      } else {
-        if($key != md5($_POST['key'])) {
-          header("HTTP/1.0 403 Forbidden");
-
-          require(JIRAFEAU_ROOT . 'lib/template/header.php');
-          echo '<div class="error"><p>Error 403: Forbidden</p></div>';
-          require(JIRAFEAU_ROOT . 'lib/template/footer.php');
-          exit;
+    }
+    else
+    {
+        if ($link['key'] == md5 ($_POST['key']))
+            $password_challenged = true;
+       else
+        {
+            header ("Access denied");
+            require (JIRAFEAU_ROOT.'lib/template/header.php');
+            echo '<div class="error"><p>' . t('Access denied') .
+            '</p></div>';
+            require (JIRAFEAU_ROOT.'lib/template/footer.php');
+            exit;

         }
         }

-      }

     }
     }

+}

 
 

-    header('Content-Length: ' . $file_size);
-    header('Content-Type: ' . $mime_type);
-    if(!jirafeau_is_viewable($mime_type)) {
-      header('Content-Disposition: attachment; filename="' . $file_name . '"');
-    }
-    readfile(VAR_FILES . $md5);
+if ($cfg['download_page'] && !$password_challenged && !$button_download && !$button_preview)
+{
+        require (JIRAFEAU_ROOT.'lib/template/header.php');
+        echo '<div>' .
+             '<form action = "';
+        echo $cfg['web_root'] . '/file.php';
+        echo '" ' .
+             'method = "post" id = "submit">'; ?>
+             <input type = "hidden" name = "jirafeau" value = "<?php echo JIRAFEAU_VERSION ?>"/><?php
+        echo '<fieldset><legend>' . $link['file_name'] . '</legend><table>' .
+             '<tr><td>' .
+             t('You are about to download') . ' "' . $link['file_name'] . '" (' . jirafeau_human_size($link['file_size']) . ')' .
+             '</td></tr>' .
+             '<tr><td>' .
+             t('By using our services, you accept of our'). ' <a href="' . $cfg['web_root'] . '/tos.php' . '">' . t('Term Of Service') . '</a>';
+            ?><input type="submit" id = "submit_download"  value="<?php echo t('Download'); ?>"
+            onclick="document.getElementById('submit').action='
+<?php
+        echo $cfg['web_root'] . '/file.php?h=' . $link_name . '&amp;bd=1';
+        if (!empty($crypt_key))
+            echo '&amp;k=' . urlencode($crypt_key);
+?>';
+        document.getElementById('submit_download').submit ();"/><?php

 
 

-    if($onetime == 'O') {
-      jirafeau_delete($link_name);
-    }
-    exit;
-  } else {
-    header("HTTP/1.0 404 Not Found");
+        if ($cfg['download_page'] && $cfg['preview'])
+        {
+            ?><input type="submit" id = "submit_preview"  value="<?php echo t('Preview'); ?>"
+            onclick="document.getElementById('submit').action='
+<?php
+        echo $cfg['web_root'] . '/file.php?h=' . $link_name . '&amp;bp=1';
+        if (!empty($crypt_key))
+            echo '&amp;k=' . urlencode($crypt_key);
+?>';
+        document.getElementById('submit_preview').submit ();"/><?php
+        }
+        echo '</td></tr>';
+        echo '</table></fieldset></form></div>';
+        require (JIRAFEAU_ROOT.'lib/template/footer.php');
+        exit;
+}

 
 

-    require(JIRAFEAU_ROOT . 'lib/template/header.php');
-    echo '<div class="error"><p>Error 404: Not Found</p></div>';
-    require(JIRAFEAU_ROOT . 'lib/template/footer.php');
-    exit;
-  }
-} else {
-  header('Location: ' . $cfg['web_root']);
-  exit;
+header ('HTTP/1.0 200 OK');
+header ('Content-Length: ' . $link['file_size']);
+if (!jirafeau_is_viewable ($link['mime_type']) || !$cfg['preview'] || $button_download)
+    header ('Content-Disposition: attachment; filename="' .
+        $link['file_name'] . '"');
+else
+    header ('Content-Type: ' . $link['mime_type']);
+
+/* Read encrypted file. */
+if ($link['crypted'])
+{
+    /* Extract key and iv. */
+    $ex = explode (".", $crypt_key);
+    $key = $ex[0];
+    $iv = base64_decode($ex[1]);
+    error_log ("crypt_key: " . $crypt_key . " iv: " . $v . " key: ". $key . "\n", 3, "debug.log");
+    /* Init module */
+    $m = mcrypt_module_open('rijndael-256', '', 'ofb', '');
+    mcrypt_generic_init($m, $key, $iv);
+    /* Decrypt file. */
+    $r = fopen (VAR_FILES . $p . $link['md5'], 'r');
+    while (!feof ($r))
+    {
+        $dec = mdecrypt_generic($m, fread ($r, 1024));
+        print $dec;
+        ob_flush();
+    }
+    fclose ($r);
+    /* Cleanup. */
+    mcrypt_generic_deinit($m);
+    mcrypt_module_close($m);

 }
 }

+/* Read file. */
+else
+{
+    $r = fopen (VAR_FILES . $p . $link['md5'], 'r');
+    while (!feof ($r))
+    {
+        print fread ($r, 1024);
+        ob_flush();
+    }
+    fclose ($r);
+}
+
+if ($link['onetime'] == 'O')
+    jirafeau_delete_link ($link_name);
+exit;

 
 ?>
 
 ?>