upload.php

   1 <?php
   2
   3 require_once __DIR__ . '/db.php';
   4 require_once __DIR__ . '/auth.php';
   5 require_once __DIR__ . '/uuid.php';
   6
   7 if ($_SERVER['REQUEST_METHOD'] === 'POST') {
   8   $user = check_auth();
   9   $db = get_db();
  10   $db->exec('BEGIN TRANSACTION');
  11   $post_id = uuid_v4();
  12   $post_time = time();
  13   $images = $_FILES['image'];
  14   $num_files = count($images['name']);
  15   for ($i = 0; $i < $num_files; $i++) {
  16     $name = $images['name'][$i];
  17     $mime_type = $images['type'][$i];
  18     $tmp_file = $images['tmp_name'][$i];
  19     $error = $images['error'][$i];
  20     if($error != '0') {
  21       http_response_code(400);
  22       die('Upload error');
  23     }
  24     $size = $images['size'][$i];
  25     // strip EXIF
  26     $img = new Imagick($tmp_file);
  27     // keep ICC for quality
  28     $profiles = $img->getImageProfiles("icc", true);
  29     $img->stripImage();
  30     if(!empty($profiles)) {
  31       $img->profileImage('icc', $profiles['icc']);
  32     }
  33
  34     $file_b64 = base64_encode($img->getImageBlob());
  35     $pic_id = uuid_v4();
  36     $upload_stmt = $db->prepare('INSERT into pics values (:id, :post_id, :mime_type, :b64_bytes)');
  37     $upload_stmt->bindValue(':id', $pic_id);
  38     $upload_stmt->bindValue(':post_id', $post_id);
  39     $upload_stmt->bindValue(':mime_type', $mime_type);
  40     $upload_stmt->bindValue(':b64_bytes', $file_b64);
  41     $upload_stmt->execute();
  42
  43     echo "<img src='data:{$mime_type};base64,{$file_b64}' alt='$name'/>";
  44   }
  45
  46   $post_stmt = $db->prepare('INSERT into posts VALUES(:id, :user, :time)');
  47   $post_stmt->bindValue(':id', $post_id);
  48   $post_stmt->bindValue(':user', $user);
  49   $post_stmt->bindValue(':time', $post_time);
  50
  51   $comment_stmt = $db->prepare('INSERT into comments VALUES (:id, :post_id, :body)');
  52   $comment_stmt->bindValue(':id', uuid_v4());
  53   $comment_stmt->bindValue(':post_id', $post_id);
  54   $comment_stmt->bindValue(':body', $_POST['comment'] ?? '');
  55   $comment_stmt->execute();
  56   $post_stmt->execute();
  57
  58   $db->exec('COMMIT');
  59 } else {
  60 echo '
  61   <html>
  62     <body>
  63       <form enctype="multipart/form-data" method="POST" action="upload.php">
  64         <label>Pick Images:<input type="file" id="upload" name="image[]" multiple>
  65         </input></label>
  66         <br/>
  67         <textarea id="comment" name="comment" placeholder="Title/comment your post"></textarea>
  68         <br/>
  69         <input type="submit" value="Upload"/>
  70       </form>
  71     </body>
  72   </html>
  73 ';
  74 }