[FEATURE] add LDAP authentication support for uploaders

[jirafeau_mojo42.git] / lib / functions.php

diff --git a/lib/functions.php b/lib/functions.php
index f564db61f494287b6901b46f85fe06d96d11c9bd..58001902d71b0ceda4922be9588ea57ef1b6f9db 100644 (file)
--- a/lib/functions.php
+++ b/lib/functions.php
@@ -20,7 +20,7 @@
  */
 
 /**
  */
 
 /**

- * Transform a string in a path by seperating each letters by a '/'.
+ * Transform a string in a path by separating each letters by a '/'.

  * @return path finishing with a '/'
  */
 function s2p($s)
  * @return path finishing with a '/'
  */
 function s2p($s)


@@ -142,6 +142,11 @@ function jirafeau_fatal_error($errorText, $cfg = array())
     exit;
 }
 
     exit;
 }
 

+function jirafeau_non_fatal_error($errorText)
+{
+    echo '<div class="error"><p>' . $errorText . '</p></div>';
+}
+

 function jirafeau_clean_rm_link($link)
 {
     $p = s2p("$link");
 function jirafeau_clean_rm_link($link)
 {
     $p = s2p("$link");


@@ -190,20 +195,23 @@ function jirafeau_ini_to_bytes($value)
     $modifier = substr($value, -1);
     $bytes = substr($value, 0, -1);
     switch (strtoupper($modifier)) {
     $modifier = substr($value, -1);
     $bytes = substr($value, 0, -1);
     switch (strtoupper($modifier)) {

-    case 'P':
-        $bytes *= 1024;
-        // no break
-    case 'T':
-        $bytes *= 1024;
-        // no break
-    case 'G':
-        $bytes *= 1024;
-        // no break
-    case 'M':
-        $bytes *= 1024;
-        // no break
-    case 'K':
-        $bytes *= 1024;
+        default:
+            return intval($value);
+            break;
+        case 'P':
+            $bytes *= 1024;
+            // no break
+        case 'T':
+            $bytes *= 1024;
+            // no break
+        case 'G':
+            $bytes *= 1024;
+            // no break
+        case 'M':
+            $bytes *= 1024;
+            // no break
+        case 'K':
+            $bytes *= 1024;

     }
     return $bytes;
 }
     }
     return $bytes;
 }


@@ -229,6 +237,30 @@ function jirafeau_get_max_upload_size()
     return jirafeau_human_size(jirafeau_get_max_upload_size_bytes());
 }
 
     return jirafeau_human_size(jirafeau_get_max_upload_size_bytes());
 }
 

+/**
+ * get the maximal upload size for a data chunk in async uploads
+ * @param max_upload_chunk_size_bytes
+ */
+function jirafeau_get_max_upload_chunk_size_bytes($max_upload_chunk_size_bytes = 0)
+{
+    if ($max_upload_chunk_size_bytes == 0) {
+        $size = jirafeau_get_max_upload_size_bytes();
+        // Jirafeau must choose an arbitrary number as PHP config does not give any limit nor $max_upload_chunk_size_bytes
+        if ($size == 0) {
+            return 10000000; // 10MB
+        }
+        return $size;
+    }
+    $size = min(
+        jirafeau_get_max_upload_size_bytes(),
+        $max_upload_chunk_size_bytes
+    );
+    if ($size == 0) {
+        return $max_upload_chunk_size_bytes;
+    }
+    return $size;
+}
+

 /**
  * gets a string explaining the error
  * @param $code the error code
 /**
  * gets a string explaining the error
  * @param $code the error code


@@ -237,19 +269,19 @@ function jirafeau_get_max_upload_size()
 function jirafeau_upload_errstr($code)
 {
     switch ($code) {
 function jirafeau_upload_errstr($code)
 {
     switch ($code) {

-    case UPLOAD_ERR_INI_SIZE:
-    case UPLOAD_ERR_FORM_SIZE:
-        return t('Your file exceeds the maximum authorized file size. ');
+        case UPLOAD_ERR_INI_SIZE:
+        case UPLOAD_ERR_FORM_SIZE:
+            return t('Your file exceeds the maximum authorized file size. ');

 
 

-    case UPLOAD_ERR_PARTIAL:
-    case UPLOAD_ERR_NO_FILE:
-        return
-            t('Your file was not uploaded correctly. You may succeed in retrying. ');
+        case UPLOAD_ERR_PARTIAL:
+        case UPLOAD_ERR_NO_FILE:
+            return
+                t('Your file was not uploaded correctly. You may succeed in retrying. ');

 
 

-    case UPLOAD_ERR_NO_TMP_DIR:
-    case UPLOAD_ERR_CANT_WRITE:
-    case UPLOAD_ERR_EXTENSION:
-        return t('Internal error. You may not succeed in retrying. ');
+        case UPLOAD_ERR_NO_TMP_DIR:
+        case UPLOAD_ERR_CANT_WRITE:
+        case UPLOAD_ERR_EXTENSION:
+            return t('Internal error. You may not succeed in retrying. ');

     }
     return t('Unknown error. ');
 }
     }
     return t('Unknown error. ');
 }


@@ -418,7 +450,7 @@ function jirafeau_upload($file, $one_time_download, $key, $time, $ip, $crypt, $l
         }
     }
 
         }
     }
 

-    /* file informations */
+    /* file information */

     $hash = jirafeau_hash_file($file_hash_method, $file['tmp_name']);
     $name = str_replace(NL, '', trim($file['name']));
     $mime_type = $file['type'];
     $hash = jirafeau_hash_file($file_hash_method, $file['tmp_name']);
     $name = str_replace(NL, '', trim($file['name']));
     $mime_type = $file['type'];


@@ -509,10 +541,15 @@ function jirafeau_upload($file, $one_time_download, $key, $time, $ip, $crypt, $l
 function jirafeau_is_viewable($mime)
 {
     if (!empty($mime)) {
 function jirafeau_is_viewable($mime)
 {
     if (!empty($mime)) {

-        /* Actually, verify if mime-type is an image or a text. */
-        $viewable = array('image', 'text', 'video', 'audio');
+        $viewable = array('image', 'video', 'audio');

         $decomposed = explode('/', $mime);
         $decomposed = explode('/', $mime);

-        return in_array($decomposed[0], $viewable);
+        if (in_array($decomposed[0], $viewable) && strpos($mime, 'image/svg+xml') === false) {
+            return true;
+        }
+        $viewable = array('text/plain');
+        if (in_array($mime, $viewable)) {
+            return true;
+        }

     }
     return false;
 }
     }
     return false;
 }


@@ -559,13 +596,15 @@ function show_errors()
 
 function check_errors($cfg)
 {
 
 function check_errors($cfg)
 {

-    if (file_exists(JIRAFEAU_ROOT . 'install.php')
-        && !($cfg['installation_done'] === true)) {
-        header('Location: install.php');
-        exit;
+    if (!($cfg['installation_done'] === true)) {
+        if (file_exists(JIRAFEAU_ROOT . 'install.php')) {
+            header('Location: install.php');
+            exit;
+        } else {
+            add_error(t('INSTALL_FILE_NOT_FOUND_TITLE'), t('INSTALL_FILE_NOT_FOUND_DESC'));
+        }

     }
 
     }
 

-    /* Checking for errors. */

     if (!is_writable(VAR_FILES)) {
         add_error(t('FILE_DIR_W'), VAR_FILES);
     }
     if (!is_writable(VAR_FILES)) {
         add_error(t('FILE_DIR_W'), VAR_FILES);
     }


@@ -585,11 +624,19 @@ function check_errors($cfg)
     if ($cfg['one_time_download'] && $cfg['litespeed_workaround']) {
         add_error(t('INCOMPATIBLE_OPTIONS_W'), 'one_time_download=true<br>litespeed_workaround=true');
     }
     if ($cfg['one_time_download'] && $cfg['litespeed_workaround']) {
         add_error(t('INCOMPATIBLE_OPTIONS_W'), 'one_time_download=true<br>litespeed_workaround=true');
     }

+    if ($cfg['upload_ldap_auth'] === true) {
+        if (sizeof($cfg['upload_password']) > 0) {
+            add_error(t('INCOMPATIBLE_OPTIONS_W'), 'upload_ldap_auth=true<br>sizeof(upload_password) > 0');
+        }
+        if (sizeof($cfg['upload_ip_nopassword']) > 0) {
+            add_error(t('INCOMPATIBLE_OPTIONS_W'), 'upload_ldap_auth=true<br>sizeof(upload_ip_nopassword) > 0');
+        }
+    }

 }
 
 /**
 }
 
 /**

- * Read link informations
- * @return array containing informations.
+ * Read link information
+ * @return array containing information.

  */
 function jirafeau_get_link($hash)
 {
  */
 function jirafeau_get_link($hash)
 {


@@ -654,7 +701,7 @@ function jirafeau_admin_list($name, $file_hash, $link_hash)
                 /* Push new found directory. */
                 $stack[] = $d . $node . '/';
             } elseif (is_file($d . $node)) {
                 /* Push new found directory. */
                 $stack[] = $d . $node . '/';
             } elseif (is_file($d . $node)) {

-                /* Read link informations. */
+                /* Read link information. */

                 $l = jirafeau_get_link($node);
                 if (!count($l)) {
                     continue;
                 $l = jirafeau_get_link($node);
                 if (!count($l)) {
                     continue;


@@ -670,7 +717,7 @@ function jirafeau_admin_list($name, $file_hash, $link_hash)
                 if (!empty($link_hash) && $link_hash != $node) {
                     continue;
                 }
                 if (!empty($link_hash) && $link_hash != $node) {
                     continue;
                 }

-                /* Print link informations. */
+                /* Print link information. */

                 echo '<tr>';
                 echo '<td>' .
                 '<strong><a id="upload_link" href="f.php?h='. jirafeau_escape($node) .'" title="' .
                 echo '<tr>';
                 echo '<td>' .
                 '<strong><a id="upload_link" href="f.php?h='. jirafeau_escape($node) .'" title="' .


@@ -732,7 +779,7 @@ function jirafeau_admin_clean()
                 /* Push new found directory. */
                 $stack[] = $d . $node . '/';
             } elseif (is_file($d . $node)) {
                 /* Push new found directory. */
                 $stack[] = $d . $node . '/';
             } elseif (is_file($d . $node)) {

-                /* Read link informations. */
+                /* Read link information. */

                 $l = jirafeau_get_link(basename($node));
                 if (!count($l)) {
                     continue;
                 $l = jirafeau_get_link(basename($node));
                 if (!count($l)) {
                     continue;


@@ -752,7 +799,7 @@ function jirafeau_admin_clean()
 
 
 /**
 
 
 /**

- * Clean old async transferts.
+ * Clean old async transfers.

  * @return number of cleaned files.
  */
 function jirafeau_admin_clean_async()
  * @return number of cleaned files.
  */
 function jirafeau_admin_clean_async()


@@ -773,12 +820,12 @@ function jirafeau_admin_clean_async()
                 /* Push new found directory. */
                 $stack[] = $d . $node . '/';
             } elseif (is_file($d . $node)) {
                 /* Push new found directory. */
                 $stack[] = $d . $node . '/';
             } elseif (is_file($d . $node)) {

-                /* Read async informations. */
+                /* Read async information. */

                 $a = jirafeau_get_async_ref(basename($node));
                 if (!count($a)) {
                     continue;
                 }
                 $a = jirafeau_get_async_ref(basename($node));
                 if (!count($a)) {
                     continue;
                 }

-                /* Delete transferts older than 1 hour. */
+                /* Delete transfers older than 1 hour. */

                 if (time() - $a['last_edited'] > 3600) {
                     jirafeau_async_delete(basename($node));
                     $count++;
                 if (time() - $a['last_edited'] > 3600) {
                     jirafeau_async_delete(basename($node));
                     $count++;


@@ -830,7 +877,8 @@ function jirafeau_admin_bug_report($cfg)
         'enable_crypt',
         'preview',
         'maximal_upload_size',
         'enable_crypt',
         'preview',
         'maximal_upload_size',

-        'store_uploader_ip'
+        'store_uploader_ip',
+        'max_upload_chunk_size_bytes'

     ];
     foreach ($jirafeau_options as &$o) {
         $v = $cfg[$o];
     ];
     foreach ($jirafeau_options as &$o) {
         $v = $cfg[$o];


@@ -887,8 +935,8 @@ function jirafeau_admin_bug_report($cfg)
 }
 
 /**
 }
 
 /**

- * Read async transfert informations
- * @return array containing informations.
+ * Read async transfer information
+ * @return array containing information.

  */
 function jirafeau_get_async_ref($ref)
 {
  */
 function jirafeau_get_async_ref($ref)
 {


@@ -912,7 +960,7 @@ function jirafeau_get_async_ref($ref)
 }
 
 /**
 }
 
 /**

- * Delete async transfert informations
+ * Delete async transfer information

  */
 function jirafeau_async_delete($ref)
 {
  */
 function jirafeau_async_delete($ref)
 {


@@ -936,17 +984,15 @@ function jirafeau_async_delete($ref)
 
 /**
   * Init a new asynchronous upload.
 
 /**
   * Init a new asynchronous upload.

-  * @param $finename Name of the file to send
+  * @param $filename Name of the file to send

   * @param $one_time One time upload parameter
   * @param $key eventual password (or blank)
   * @param $time time limit
   * @param $ip ip address of the client
   * @param $one_time One time upload parameter
   * @param $key eventual password (or blank)
   * @param $time time limit
   * @param $ip ip address of the client

-  * @return a string containing a temporary reference followed by a code or the string 'Error'
+  * @return a string containing a temporary reference followed by a code or a string starting with 'Error'

   */
 function jirafeau_async_init($filename, $type, $one_time, $key, $time, $ip)
 {
   */
 function jirafeau_async_init($filename, $type, $one_time, $key, $time, $ip)
 {

-    $res = 'Error';
-

     /* Create temporary folder. */
     $ref;
     $p;
     /* Create temporary folder. */
     $ref;
     $p;


@@ -957,8 +1003,7 @@ function jirafeau_async_init($filename, $type, $one_time, $key, $time, $ip)
     } while (file_exists($p));
     @mkdir($p, 0755, true);
     if (!file_exists($p)) {
     } while (file_exists($p));
     @mkdir($p, 0755, true);
     if (!file_exists($p)) {

-        echo 'Error';
-        return;
+        return 'Error: cannot create async folder.';

     }
 
     /* touch empty data file */
     }
 
     /* touch empty data file */


@@ -971,7 +1016,7 @@ function jirafeau_async_init($filename, $type, $one_time, $key, $time, $ip)
         $password = md5($key);
     }
 
         $password = md5($key);
     }
 

-    /* Store informations. */
+    /* Store information. */

     $p .= $ref;
     $handle = fopen($p, 'w');
     fwrite(
     $p .= $ref;
     $handle = fopen($p, 'w');
     fwrite(


@@ -992,7 +1037,7 @@ function jirafeau_async_init($filename, $type, $one_time, $key, $time, $ip)
   * @param $file piece of data
   * @param $code client code for this operation
   * @param $max_file_size maximum allowed file size
   * @param $file piece of data
   * @param $code client code for this operation
   * @param $max_file_size maximum allowed file size

-  * @return a string containing a next code to use or the string "Error"
+  * @return a string containing a next code to use or a string starting with 'Error'

   */
 function jirafeau_async_push($ref, $data, $code, $max_file_size)
 {
   */
 function jirafeau_async_push($ref, $data, $code, $max_file_size)
 {


@@ -1000,11 +1045,22 @@ function jirafeau_async_push($ref, $data, $code, $max_file_size)
     $a = jirafeau_get_async_ref($ref);
 
     /* Check some errors. */
     $a = jirafeau_get_async_ref($ref);
 
     /* Check some errors. */

-    if (count($a) == 0
-        || $a['next_code'] != "$code"
-        || empty($data['tmp_name'])
-        || !is_uploaded_file($data['tmp_name'])) {
-        return 'Error';
+    if (count($a) == 0) {
+        return "Error: cannot find transfer";
+    }
+    if ($a['next_code'] != "$code") {
+        return "Error: bad transfer code";
+    }
+    if ($data['error'] != UPLOAD_ERR_OK) {
+        // Check error code in https://www.php.net/manual/en/features.file-upload.errors.php
+        $data_details = print_r($data, true);
+        return "Error: upload error: {$data_details}";
+    }
+    if (empty($data['tmp_name'])) {
+        return "Error: missing tmp_name";
+    }
+    if (!is_uploaded_file($data['tmp_name'])) {
+        return "Error: tmp_name may not be uploaded";

     }
 
     $p = s2p($ref);
     }
 
     $p = s2p($ref);


@@ -1017,7 +1073,7 @@ function jirafeau_async_push($ref, $data, $code, $max_file_size)
     if ($max_file_size > 0 &&
         filesize($r_path) + filesize($w_path) > $max_file_size * 1024 * 1024) {
         jirafeau_async_delete($ref);
     if ($max_file_size > 0 &&
         filesize($r_path) + filesize($w_path) > $max_file_size * 1024 * 1024) {
         jirafeau_async_delete($ref);

-        return 'Error';
+        return "Error: file size is above upload limit";

     }
 
     /* Concatenate data. */
     }
 
     /* Concatenate data. */


@@ -1028,7 +1084,7 @@ function jirafeau_async_push($ref, $data, $code, $max_file_size)
             fclose($r);
             fclose($w);
             jirafeau_async_delete($ref);
             fclose($r);
             fclose($w);
             jirafeau_async_delete($ref);

-            return 'Error';
+            return "Error: cannot write file";

         }
     }
     fclose($r);
         }
     }
     fclose($r);


@@ -1049,12 +1105,12 @@ function jirafeau_async_push($ref, $data, $code, $max_file_size)
 }
 
 /**
 }
 
 /**

-  * Finalyze an asynchronous upload.
+  * Finalize an asynchronous upload.

   * @param $ref asynchronous upload reference
   * @param $code client code for this operation
   * @param $crypt boolean asking to crypt or not
   * @param $link_name_length link name length
   * @param $ref asynchronous upload reference
   * @param $code client code for this operation
   * @param $crypt boolean asking to crypt or not
   * @param $link_name_length link name length

-  * @return a string containing the download reference followed by a delete code or the string 'Error'
+  * @return a string containing the download reference followed by a delete code or a string starting with 'Error'

   */
 function jirafeau_async_end($ref, $code, $crypt, $link_name_length, $file_hash_method)
 {
   */
 function jirafeau_async_end($ref, $code, $crypt, $link_name_length, $file_hash_method)
 {


@@ -1062,13 +1118,13 @@ function jirafeau_async_end($ref, $code, $crypt, $link_name_length, $file_hash_m
     $a = jirafeau_get_async_ref($ref);
     if (count($a) == 0
         || $a['next_code'] != "$code") {
     $a = jirafeau_get_async_ref($ref);
     if (count($a) == 0
         || $a['next_code'] != "$code") {

-        return "Error";
+        return "Error: bad code for ending transfer";

     }
 
     /* Generate link infos. */
     $p = VAR_ASYNC . s2p($ref) . $ref . "_data";
     if (!file_exists($p)) {
     }
 
     /* Generate link infos. */
     $p = VAR_ASYNC . s2p($ref) . $ref . "_data";
     if (!file_exists($p)) {

-        return 'Error';
+        return "Error: referenced file does not exist";

     }
 
     $crypted = false;
     }
 
     $crypted = false;


@@ -1116,9 +1172,11 @@ function jirafeau_async_end($ref, $code, $crypt, $link_name_length, $file_hash_m
     fclose($handle);
     $hash_link = substr(base_16_to_64(md5_file($link_tmp_name)), 0, $link_name_length);
     $l = s2p("$hash_link");
     fclose($handle);
     $hash_link = substr(base_16_to_64(md5_file($link_tmp_name)), 0, $link_name_length);
     $l = s2p("$hash_link");

-    if (!@mkdir(VAR_LINKS . $l, 0755, true) ||
-        !rename($link_tmp_name, VAR_LINKS . $l . $hash_link)) {
-        return 'Error';
+    if (!@mkdir(VAR_LINKS . $l, 0755, true)) {
+        return "Error: cannot create folder in LINKS";
+    }
+    if (!rename($link_tmp_name, VAR_LINKS . $l . $hash_link)) {
+        return "Error: cannot rename file in LINKS";

     }
 
     /* Clean async upload. */
     }
 
     /* Clean async upload. */


@@ -1431,7 +1489,7 @@ function jirafeau_admin_session_start()
     $_SESSION['admin_csrf'] = md5(uniqid(mt_rand(), true));
 }
 
     $_SESSION['admin_csrf'] = md5(uniqid(mt_rand(), true));
 }
 

-function jirafeau_admin_session_end()
+function jirafeau_session_end()

 {
     $_SESSION = array();
     session_destroy();
 {
     $_SESSION = array();
     session_destroy();


@@ -1451,6 +1509,17 @@ function jirafeau_admin_csrf_field()
     return "<input type='hidden' name='admin_csrf' value='". $_SESSION['admin_csrf'] . "'/>";
 }
 
     return "<input type='hidden' name='admin_csrf' value='". $_SESSION['admin_csrf'] . "'/>";
 }
 

+function jirafeau_user_session_start()
+{
+    $_SESSION['user_auth'] = true;
+}
+
+function jirafeau_user_session_logged()
+{
+    return isset($_SESSION['user_auth']) &&
+        $_SESSION['user_auth'] === true;
+}
+

 function jirafeau_dir_size($dir)
 {
     $size = 0;
 function jirafeau_dir_size($dir)
 {
     $size = 0;


@@ -1529,5 +1598,51 @@ function jirafeau_add_ending_slash($path)
 
 function jirafeau_default_web_root()
 {
 
 function jirafeau_default_web_root()
 {

-    return $_SERVER['HTTP_HOST'] . str_replace(basename(__FILE__), '', $_SERVER['REQUEST_URI']);
+    return $_SERVER['HTTP_HOST'] . str_replace('install.php', '', $_SERVER['REQUEST_URI']);
+}
+
+function jirafeau_has_ldap_auth($cfg)
+{
+    return $cfg['upload_ldap_auth'] === true;
+}
+
+function jirafeau_challenge_ldap_auth($cfg, $user, $password)
+{
+    if (!jirafeau_has_ldap_auth($cfg)) {
+        return "upload_ldap_auth not set";
+    }
+    if (strlen($cfg['upload_ldap_host']) == 0) {
+        return "upload_ldap_host not set";
+    }
+    if (strlen($cfg['upload_ldap_base_dn']) == 0) {
+        return "upload_ldap_base_dn not set";
+    }
+    $host = $cfg['upload_ldap_host'];
+    $base_dn = $cfg['upload_ldap_base_dn'];
+    $con = ldap_connect("ldap://$host");
+    $ldap_user = "cn=$user,$base_dn";
+    if (!$con) {
+        return "cannot initiate connection to ldap server";
+    }
+    ldap_set_option($con, LDAP_OPT_PROTOCOL_VERSION, 3);
+    ldap_set_option($con, LDAP_OPT_REFERRALS, 0);
+    $bind = ldap_bind_ext($con, $ldap_user, $password, [['oid' => LDAP_CONTROL_PASSWORDPOLICYREQUEST]]);
+    if (!$bind) {
+        ldap_close($con);
+        return "cannot bind to ldap server";
+    }
+    $parsing = ldap_parse_result($con, $bind, $errcode, $matcheddn, $errmsg, $referrals, $ctrls);
+    if (!$parsing) {
+        ldap_close($con);
+        return "cannot parlse ldap results";
+    }
+    if ($errcode == 49) {
+        ldap_close($con);
+        return "bad password";
+    }
+    if ($errcode != 0) {
+        ldap_close($con);
+        return "ldap auth error: $errmsg ($errcode)";
+    }
+    return true;

 }
 }