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PHP Remote File Copy PHP Script 2.0.0

ile copy, PHP script, file transfer, authorized users, URL, server directory

<?php

$upload_dir = __DIR__."/downloads";

if (empty($_REQUEST["url"])) {
    echo "<!doctype html>
    <html lang=\"en\">
    
    <head>
        <meta charset=\"utf-8\">
        <meta name=\"viewport\" content=\"width=device-width, initial-scale=1, shrink-to-fit=no\">
    
        <link rel=\"stylesheet\" href=\"https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css\" integrity=\"sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO\" crossorigin=\"anonymous\">
        <link rel=\"stylesheet\" href=\"https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/themes/smoothness/jquery-ui.css\">
    
        <title>File Transfer Script by Sumonst21</title>
    </head>
    <body>
        <div class=\"container\">
    
            <div class=\"starter-template\">
                <h1 class=\"text-center\">Transfer Files</h1>
                <form>
                    <legend>Authorized Users Only</legend>
                    <div class=\"form-group row\">
                        <label for=\"User\" class=\"col-sm-2 col-form-label\">User</label>
                        <div class=\"col-sm-10\">
                            <input type=\"text\" class=\"form-control\" name=\"username\" id=\"username\" aria-describedby=\"helpId\" placeholder=\"Enter User Name\">
                            <small id=\"helpId\" class=\"form-text text-muted\"></small>
                        </div>
                    </div>
    
                    <div class=\"form-group row\">
                        <label for=\"password\" class=\"col-sm-2 col-form-label\">Password</label>
                        <div class=\"col-sm-10\">
                            <input type=\"password\" class=\"form-control\" name=\"password\" id=\"password\" placeholder=\"*******\">
                        </div>
                    </div>
    
    
                    <div class=\"form-group row\">
                        <label for=\"url\" class=\"col-sm-2 col-form-label\">File URL</label>
                        <div class=\"col-sm-10\">
                            <input type=\"url\" name=\"fileurl\" id=\"fileurl\" class=\"form-control\" value=\"\" required=\"required\" title=\"\" placeholder=\"http://domain.com/filename.zip\">
                        </div>
                    </div>
    
                    <div class=\"form-group row\">
                        <div class=\"col-sm-10\">
                            <button id=\"submit\" type=\"submit\" class=\"btn btn-primary\">Submit</button>
                        </div>
                    </div>
                </form>
    <ul></ul>
    <progress value=\"0\" max=\"100\" style=\"display:none;\"></progress>
                <div id=\"upload-progress\" class=\"progress\" style=\"display:none;\">
                    <div class=\"progress-bar\"></div>
                </div>
        <script src=\"https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js\"></script>
        <script src=\"https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js\"></script>
    
         <script src=\"https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js\" integrity=\"sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49\" crossorigin=\"anonymous\"></script>
        <script src=\"https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js\" integrity=\"sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy\" crossorigin=\"anonymous\"></script>
    <script>
    function callback(message) {
        if (!message) {
            console.error('Empty event callback response.');
            return;
        }
        $.each(message, function (key, value) {
            switch (key) {
                case 'send':
                    $('#upload-progress').show();
                    break;
                case 'progress':
                    if (value && value.total) {
                        var percent = value.loaded / value.total * 100;
                        $(\"#upload-progress .progress-bar\").css(\"width\", +percent + \"%\").attr(\"aria-valuenow\", percent).text(percent + \"% Complete\");
                    }
                    break;
                case 'done':
                    $('<li style=\"color:green;\">').text(value && value.name).appendTo('ul');
                    $('progress').hide();
                    break;
                case 'fail':
                    $('<li style=\"color:red;\">').text(value && value.message).appendTo('ul');
                    $('progress').hide();
                    break;
            }
        });
    }
    $('form').on('submit', function (e) {
        e.preventDefault();
        $('<iframe src=\"javascript:false;\" style=\"display:none;\"></iframe>')
            .prop('src', '?url=' + encodeURIComponent($(this).find('input#fileurl').val()))
            .appendTo(document.body);
    });
    </script>
    </body>
    </html>";
    exit;
}

$url = !empty($_REQUEST["url"]) && preg_match("|^http(s)?://.+$|", stripslashes($_REQUEST["url"])) ?
    stripslashes($_REQUEST["url"]) : null;

$callback = !empty($_REQUEST["callback"]) && preg_match("|^\w+$|", $_REQUEST["callback"]) ?
    $_REQUEST["callback"] : "callback";

$use_curl = defined("CURLOPT_PROGRESSFUNCTION");

$temp_file = tempnam(sys_get_temp_dir(), "upload-");

$fileinfo = new stdClass();
$fileinfo->name = trim(basename($url), ".\x00..\x20");

echo "<span>".str_repeat("0", 1000)."</span>";

function event_callback ($message) {
    global $callback;
    echo "<script>parent.".$callback."(".json_encode($message).");</script>";
}

function get_file_path () {
    global $upload_dir, $fileinfo, $temp_file;
    return $upload_dir."/".basename($fileinfo->name).'.'.basename($temp_file).'.dat';
}

function stream_notification_callback ($notification_code, $severity, $message, $message_code, $bytes_transferred, $bytes_max) {
    global $fileinfo;
    switch($notification_code) {
        case STREAM_NOTIFY_FILE_SIZE_IS:
            $fileinfo->size = $bytes_max;
            break;
        case STREAM_NOTIFY_MIME_TYPE_IS:
            $fileinfo->type = $message;
            break;
        case STREAM_NOTIFY_PROGRESS:
            if (!$bytes_transferred) {
                event_callback(array("send" => $fileinfo));
            }
            event_callback(array("progress" => array("loaded" => $bytes_transferred, "total" => $bytes_max)));
            break;
    }
}

function curl_progress_callback ($curl_resource, $total, $loaded) {
    global $fileinfo;
    if (!$loaded) {
        if (!isset($fileinfo->size)) {
            $fileinfo->size = $total;
            event_callback(array("send" => $fileinfo));
        }
    }
    event_callback(array("progress" => array("loaded" => $loaded, "total" => $total)));
}

if (!$url) {
    $success = false;
} else if ($use_curl) {
    $fp = fopen($temp_file, "w");
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_NOPROGRESS, false );
    curl_setopt($ch, CURLOPT_PROGRESSFUNCTION, "curl_progress_callback");
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_FILE, $fp);
    $success = curl_exec($ch);
    $curl_info = curl_getinfo($ch);
    if (!$success) {
        $err = array("message" => curl_error($ch));
    }
    curl_close($ch);
    fclose($fp);
    $fileinfo->size = $curl_info["size_download"];
    $fileinfo->type = $curl_info["content_type"];
} else {
    $ctx = stream_context_create();
    stream_context_set_params($ctx, array("notification" => "stream_notification_callback"));
    $success = copy($url, $temp_file, $ctx);
    if (!$success) {
        $err = error_get_last();
    }
}

if ($success) {
    $success = rename($temp_file, get_file_path());
}

if ($success) {
    event_callback(array("done" => $fileinfo));
} else {
    unlink($temp_file);
    if (!$err) {
        $err = array("message" => "Invalid url parameter");
    }
    event_callback(array("fail" => $err));
}

?>

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