voice.php

<?php
/*
Copyright (c) 2022-2026 Arman Jussupgaliyev
*/
function exceptions_error_handler($severity, $message, $filename, $lineno) {
    throw new ErrorException($message, 0, $severity, $filename, $lineno);
}
set_error_handler('exceptions_error_handler');

try {
    include 'mp.php';
    if (!defined('CONVERT_VOICE_MESSAGES') || !CONVERT_VOICE_MESSAGES) {
        http_response_code(403);
        echo 'Voice messages converting disabled';
        die;
    }
    $user = MP::getUser();
    if (!$user) {
        http_response_code(401);
        die;
    }
    $MP = MP::getMadelineAPI($user);
    if (!isset($_GET['c']) || !isset($_GET['m'])) die;
    $cid = $_GET['c'];
    $mid = $_GET['m'];
    if (!is_numeric($cid) || !is_numeric($mid)) die;
    if (MP::isChannel($cid)) {
        $msg = $MP->channels->getMessages(channel: $cid, id: [$mid]);
    } else {
        $msg = $MP->messages->getMessages(id: [$mid]);
    }
    if ($msg && isset($msg['messages'][0])) {
        $msg = $msg['messages'][0];
    }
    $di = $MP->getDownloadInfo($msg['media']);
    if (!file_exists(VOICE_TMP_DIR)) mkdir(VOICE_TMP_DIR);
    
    $max = 10 * 1024 * 1024; // 10 mb
    if (defined('DOWNLOAD_SIZE_LIMIT')) $max = DOWNLOAD_SIZE_LIMIT;
    if (($di['size'] ?? 0) > $max) {
        http_response_code(400);
        echo 'File is too large!';
        die;
    }
    
    // automatically delete converted voices
    try {
        $scan = scandir(VOICE_TMP_DIR);
        foreach ($scan as $n) {
            if (!str_contains($n, '.mp3') || $n == '.' || $n == '..') continue;
            if (date('d.m.y', filemtime(VOICE_TMP_DIR.$n)) == date('d.m.y', time())) {
                continue;
            }
            unlink(VOICE_TMP_DIR.$n);
        }
    } catch (Exception) {}
    
    $inpath = VOICE_TMP_DIR . hash('crc32',$user).$cid.'_'.$mid;
    $outpath = $inpath.'.mp3';
    if (!file_exists($outpath)) {
        $MP->downloadToFile($di, $inpath);
        $res = shell_exec(FFMPEG_DIR.'ffmpeg -i "'.$inpath.'" -b:a 64k -ac 1 -y -acodec mp3 "'.$outpath.'"'.(WINDOWS?'':' 2>&1')) ?? '';
        unlink($inpath);
        if (str_contains($res, 'failed')) {
            echo 'Conversion failed';
            die;
        }
    }
    header('Content-Type: audio/mpeg');
    echo file_get_contents($outpath);
} catch (Exception $e) {
    echo $e;
}