mod/wall_attach.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2021, the Friendica project
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 use Friendica\App;
  23 use Friendica\Core\Session;
  24 use Friendica\Database\DBA;
  25 use Friendica\DI;
  26 use Friendica\Model\Attach;
  27 use Friendica\Model\User;
  28 use Friendica\Util\Strings;
  29
  30 function wall_attach_post(App $a) {
  31
  32         $r_json = (!empty($_GET['response']) && $_GET['response']=='json');
  33
  34         if (DI::args()->getArgc() > 1) {
  35                 $nick = DI::args()->getArgv()[1];
  36                 $owner = User::getOwnerDataByNick($nick);
  37                 if (!DBA::isResult($owner)) {
  38                         if ($r_json) {
  39                                 echo json_encode(['error' => DI::l10n()->t('Invalid request.')]);
  40                                 exit();
  41                         }
  42                         return;
  43                 }
  44         } else {
  45                 if ($r_json) {
  46                         echo json_encode(['error' => DI::l10n()->t('Invalid request.')]);
  47                         exit();
  48                 }
  49
  50                 return;
  51         }
  52
  53         $can_post  = false;
  54
  55         $page_owner_uid = $owner['uid'];
  56         $page_owner_cid = $owner['id'];
  57         $community_page = $owner['page-flags'] == User::PAGE_FLAGS_COMMUNITY;
  58
  59         if (local_user() && (local_user() == $page_owner_uid)) {
  60                 $can_post = true;
  61         } elseif ($community_page && !empty(Session::getRemoteContactID($page_owner_uid))) {
  62                 $contact_id = Session::getRemoteContactID($page_owner_uid);
  63                 $can_post = DBA::exists('contact', ['blocked' => false, 'pending' => false, 'id' => $contact_id, 'uid' => $page_owner_uid]);
  64         }
  65
  66         if (!$can_post) {
  67                 if ($r_json) {
  68                         echo json_encode(['error' => DI::l10n()->t('Permission denied.')]);
  69                         exit();
  70                 }
  71                 notice(DI::l10n()->t('Permission denied.') . EOL );
  72                 exit();
  73         }
  74
  75         if (empty($_FILES['userfile'])) {
  76                 if ($r_json) {
  77                         echo json_encode(['error' => DI::l10n()->t('Invalid request.')]);
  78                 }
  79                 exit();
  80         }
  81
  82         $src      = $_FILES['userfile']['tmp_name'];
  83         $filename = basename($_FILES['userfile']['name']);
  84         $filesize = intval($_FILES['userfile']['size']);
  85
  86         $maxfilesize = DI::config()->get('system','maxfilesize');
  87
  88         /* Found html code written in text field of form,
  89          * when trying to upload a file with filesize
  90          * greater than upload_max_filesize. Cause is unknown.
  91          * Then Filesize gets <= 0.
  92          */
  93
  94         if ($filesize <= 0) {
  95                 $msg = DI::l10n()->t('Sorry, maybe your upload is bigger than the PHP configuration allows') . EOL .(DI::l10n()->t('Or - did you try to upload an empty file?'));
  96                 if ($r_json) {
  97                         echo json_encode(['error' => $msg]);
  98                 } else {
  99                         notice($msg);
 100                 }
 101                 @unlink($src);
 102                 exit();
 103         }
 104
 105         if ($maxfilesize && $filesize > $maxfilesize) {
 106                 $msg = DI::l10n()->t('File exceeds size limit of %s', Strings::formatBytes($maxfilesize));
 107                 if ($r_json) {
 108                         echo json_encode(['error' => $msg]);
 109                 } else {
 110                         echo $msg . EOL;
 111                 }
 112                 @unlink($src);
 113                 exit();
 114         }
 115
 116         $newid = Attach::storeFile($src, $page_owner_uid, $filename, '<' . $page_owner_cid . '>');
 117
 118         @unlink($src);
 119
 120         if ($newid === false) {
 121                 $msg =  DI::l10n()->t('File upload failed.');
 122                 if ($r_json) {
 123                         echo json_encode(['error' => $msg]);
 124                 } else {
 125                         echo $msg . EOL;
 126                 }
 127                 exit();
 128         }
 129
 130         if ($r_json) {
 131                 echo json_encode(['ok' => true, 'id' => $newid]);
 132                 exit();
 133         }
 134
 135         $lf = "\n";
 136
 137         echo  $lf . $lf . '[attachment]' . $newid . '[/attachment]' . $lf;
 138
 139         exit();
 140         // NOTREACHED
 141 }