preview_link . "invite.png"; } /* * Fetch QR codes from SOGS server and encode them as base64 */ function base64_qr_code($room_id, $room, $size = "512x512") { $png_cached = room_qr_code_cached($room_id); if (file_exists($png_cached)) { // fwrite(STDERR, "QR code found for " . $room_id . PHP_EOL); return base64_encode(file_get_contents($png_cached)); } // fwrite(STDERR, "QR code NOT found for " . $room_id . PHP_EOL); log_info("Fetching QR code for $room_id."); $png = file_get_contents(room_invite_png($room_id, $room)); file_put_contents($png_cached, $png); return base64_encode($png); } file_exists($QR_CODES) or mkdir($QR_CODES, 0700); ?>