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Current Directory: /opt/imh-snap-stat
Viewing File: /opt/imh-snap-stat/index.php
<?php
// SnapStat
/**
 * sys-snap Web Interface for cPanel/WHM and CWP
 *
 * Provides a web interface to view sys-snap system snapshots,
 * and display 24-hour server statistics.
 *
 * Compatible with:
 *   - cPanel/WHM: /usr/local/cpanel/whostmgr/docroot/cgi/imh-snap-stat/index.php
 *   - CWP:       /usr/local/cwpsrv/htdocs/resources/admin/modules/imh-snap-stat.php
 *
 * Maintainer: InMotion Hosting
 * Version: 0.1.6
 */


// ==========================
// 1. Environment Detection
// 2. Session & Security
// 3. HTML Header & CSS
// 4. Main Interface
// 5. sys-snap Tab
// 6. 24-hour Statistics Tab
// 7. HTML Footer
// ==========================





// ==========================
// 1. Environment Detection
// ==========================

declare(strict_types=1);

$isCPanelServer = (
    (is_dir('/usr/local/cpanel') || is_dir('/var/cpanel') || is_dir('/etc/cpanel')) && (is_file('/usr/local/cpanel/cpanel') || is_file('/usr/local/cpanel/version'))
);

$isCWPServer = (
    is_dir('/usr/local/cwp')
);

if ($isCPanelServer) {
    if (getenv('REMOTE_USER') !== 'root') exit('Access Denied');

    if (session_status() === PHP_SESSION_NONE) {
        session_start();
    }
} else { // CWP
    if (!isset($_SESSION['logged']) || $_SESSION['logged'] != 1 || !isset($_SESSION['username']) || $_SESSION['username'] !== 'root') {
        exit('Access Denied');
    }
};










// ==========================
// 2. Session & Security
// ==========================

$CSRF_TOKEN = NULL;

if (!isset($_SESSION['csrf_token'])) {
    $CSRF_TOKEN = bin2hex(random_bytes(32));
    $_SESSION['csrf_token'] = $CSRF_TOKEN;
} else {
    $CSRF_TOKEN = $_SESSION['csrf_token'];
}

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    if (
        !isset($_POST['csrf_token'], $_SESSION['csrf_token']) ||
        !hash_equals($_SESSION['csrf_token'], $_POST['csrf_token'])
    ) {
        exit("Invalid CSRF token");
    }
}

define('IMH_SAR_CACHE_DIR', '/root/tmp/imh-snap-stat');

if (!is_dir(IMH_SAR_CACHE_DIR)) {
    mkdir(IMH_SAR_CACHE_DIR, 0700, true);
}

// Clear old cache files

$cache_dir = IMH_SAR_CACHE_DIR;
$expire_seconds = 3600; // e.g. 1 hour

foreach (glob("$cache_dir/*.cache") as $file) {
    if (is_file($file) && (time() - filemtime($file) > $expire_seconds)) {
        unlink($file);
    }
}

function imh_safe_cache_filename($tag)
{
    return IMH_SAR_CACHE_DIR . '/sar_' . preg_replace('/[^a-zA-Z0-9_\-\.]/', '_', $tag) . '.cache';
}

/**
 * Returns the sar sample interval in seconds (default 600).
 */
function imh_guess_sar_interval()
{
    $cmd = "LANG=C sar -q 2>&1 | grep -E '^[0-9]{2}:[0-9]{2}:[0-9]{2}' | head -2 | awk '{print $1}'";
    $out = safe_shell_exec($cmd, 3);
    if (!is_string($out)) {
        return 600; // fallback if shell_exec failed
    }
    $lines = array_filter(array_map('trim', explode("\n", $out)));
    if (count($lines) < 2) return 600; // fallback
    $t1 = strtotime($lines[0]);
    $t2 = strtotime($lines[1]);
    if ($t1 === false || $t2 === false) return 600;
    $interval = $t2 - $t1;
    if ($interval > 0 && $interval < 3600) return $interval;
    return 600;
}

function imh_cached_shell_exec($tag, $command, $sar_interval)
{
    $cache_file = imh_safe_cache_filename($tag);



    if (file_exists($cache_file)) {
        if (fileowner($cache_file) !== 0) { // 0 = root
            unlink($cache_file);
            // treat as cache miss
        } else {
            $mtime = filemtime($cache_file);
            if (time() - $mtime < $sar_interval) {
                return file_get_contents($cache_file);
            }
        }
    }
    $out = shell_exec($command);
    if (strlen(trim($out))) {
        file_put_contents($cache_file, $out);
    }
    return $out;
}




// Runs a shell command safely with a timeout, preventing hangs.

function safe_shell_exec(string $command, int $timeout = 3): string
{
    static $timeout_bin = null;
    if ($timeout_bin === null) {
        // Find the timeout binary path once
        $found = trim(shell_exec('command -v timeout 2>/dev/null') ?: '');
        $timeout_bin = $found !== '' ? $found : false;
    }

    if ($timeout_bin) {
        // Only escape the path to timeout, not the actual command
        $cmd = escapeshellarg($timeout_bin) . ' ' . (int)$timeout . 's ' . $command;
        $out = shell_exec($cmd);
        return is_string($out) ? $out : '';
    }

    // Fallback: no timeout binary, use proc_open() with stream_select timeout
    $descriptorspec = [
        1 => ['pipe', 'w'],
        2 => ['pipe', 'w']
    ];
    $process = proc_open($command, $descriptorspec, $pipes);
    if (!is_resource($process)) return '';

    $output = '';
    $start = time();
    $readStreams = [$pipes[1], $pipes[2]];

    while (!empty($readStreams) && (time() - $start) < $timeout) {
        $readCopy = $readStreams;
        $write = null;
        $except = null;

        if (stream_select($readCopy, $write, $except, 1) > 0) {
            foreach ($readCopy as $stream) {
                $chunk = stream_get_contents($stream);
                if ($chunk !== false) {
                    $output .= $chunk;
                }
                $key = array_search($stream, $readStreams, true);
                unset($readStreams[$key]);
            }
        }
    }

    foreach ($pipes as $pipe) {
        fclose($pipe);
    }
    proc_terminate($process);
    proc_close($process);

    // Return raw output (don't trim so whitespace/newlines are preserved)
    return is_string($output) ? $output : '';
}














// Defaults and validation

if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['reset_time'])) {
    // Reset to defaults
    $start_hour = 0;
    $start_min  = 0;
    $end_hour   = 23;
    $end_min    = 59;
} else {
    $start_hour = min(23, max(0, (int)($_POST['start_hour'] ?? 0)));
    $start_min  = min(59, max(0, (int)($_POST['start_min'] ?? 0)));
    $end_hour   = min(23, max(0, (int)($_POST['end_hour'] ?? 23)));
    $end_min    = min(59, max(0, (int)($_POST['end_min'] ?? 59)));
}









// Find local time

$server_time_full = safe_shell_exec('timedatectl', 2);
if (!$server_time_full) {
    $server_time = 'Time unavailable';
} else {
    $server_time_lines = explode("\n", trim($server_time_full));
    $server_time = $server_time_lines[0] ?? 'Time unavailable';
}








// ==========================
// 3. HTML Header & CSS
// ==========================

if ($isCPanelServer) {
    require_once('/usr/local/cpanel/php/WHM.php');
    WHM::header('imh-snap-stat WHM Interface', 0, 0);
} else {
    echo '<div class="panel-body">';
};








// Styles for the tabs and buttons

?>

<style>
    .panel-body a,
    .imh-box a,
    .imh-footer-box a,
    .imh-box--narrow a,
    .panel-body a,
    .imh-box a,
    .imh-footer-box a,
    .imh-box--narrow a {
        color: #C52227;
    }

    .panel-body a:hover,
    .imh-box a:hover,
    .imh-footer-box a:hover,
    .imh-box--narrow a:hover,
    .panel-body a:focus,
    .imh-box a:focus,
    .imh-footer-box a:focus,
    .imh-box--narrow a:focus {
        color: #d33a41;
    }

    .imh-btn {
        margin-left: 15px;
        padding: 5px 15px;
        border-radius: 6px;
    }

    .imh-red-btn {
        background: #C52227;
        color: #fff;
        border: none;
    }

    .imh-piechart-col {
        vertical-align: top;
    }

    .imh-title {
        margin: 0.25em 0 1em 0;
    }

    .imh-title-img {
        margin-right: 0.5em;
    }

    .sys-snap-tables {
        border-collapse: collapse;
        margin: 2em 0;
        background: #fafcff;
    }

    .sys-snap-tables,
    .sys-snap-tables th,
    .sys-snap-tables td {
        border: 1px solid #000;
    }

    .sys-snap-tables th,
    .sys-snap-tables td {
        padding: 4px 8px;
    }

    .sys-snap-tables thead {
        background: #e6f2ff;
        color: #333;
        font-weight: 600;
    }

    .sys-snap-tables tr.odd-num-table-row {
        background: #f4f4f4;
    }

    .tabs-nav {
        display: flex;
        border-bottom: 1px solid #e3e3e3;
        margin-bottom: 2em;
    }

    .tabs-nav button {
        border: none;
        background: #f8f8f8;
        color: #333;
        padding: 12px 28px;
        cursor: pointer;
        border-top-left-radius: 6px;
        border-top-right-radius: 6px;
        font-size: 1em;
        margin-bottom: -1px;
        border-bottom: 2px solid transparent;
        transition: background 0.15s, border-color 0.15s;
    }

    .tabs-nav button.active {
        background: #fff;
        border-bottom: 2px solid #C52227;
        color: #C52227;
        font-weight: 600;
    }

    .tab-content {
        display: none;
    }

    .tab-content.active {
        display: block;
    }

    .imh-status {
        display: inline-block;
        padding: 6px 18px;
        border-radius: 14px;
        font-weight: 600;
        margin-right: 18px;
        border: 1px solid;
    }

    .imh-status-running {
        background: #e6ffee;
        color: #26a042;
        border-color: #8fd19e;
    }

    .imh-status-notrunning {
        background: #ffeaea;
        color: #c22626;
        border-color: #e99;
    }

    .imh-box {
        margin: 2em 0;
        padding: 1em;
        border: 1px solid #ccc;
        border-radius: 8px;
        display: block;
        background: #f9f9f9;
    }

    .imh-width-full {
        table-layout: fixed;
        width: 100%;
    }

    .imh-box--narrow {
        margin: 1em 0 1em 0;
        padding: 1em;
        border: 1px solid #ccc;
        border-radius: 8px;
        display: block;
        background: #f9f9f9;
    }

    .imh-box--footer {
        margin: 2em 0 2em 0;
        padding: 1em;
        border: 1px solid #ccc;
        border-radius: 8px;
        display: block;
    }

    .imh-pre {
        background: #f8f8f8;
        border: 1px solid #ccc;
        padding: 1em;
        margin: 2em;
    }

    .imh-server-time {
        margin-left: 1em;
        color: #444;
        font-weight: 600;
    }

    .imh-spacer {
        margin-top: 2em;
    }

    .imh-user-section {
        display: block;
        padding: 0.5em 1em;
        border-top: 1px solid black;
    }

    .imh-user-name {
        color: rgb(42, 73, 94);
    }

    .imh-table-alt {
        background: #f4f4f4;
    }

    .imh-alert {
        color: #c00;
        margin: 1em;
    }

    .imh-footer-img {
        margin-bottom: 1em;
    }

    .imh-footer-box {
        margin: 2em 0 2em 0;
        padding: 1em;
        border: 1px solid #ccc;
        border-radius: 8px;
        display: block;
        background: #f9f9f9;
    }

    .imh-small-note {
        font-size: 0.9em;
        color: #555;
    }

    .text-right {
        text-align: right;
    }

    .imh-monospace {
        font-family: monospace;
    }

    .imh-box.margin-bottom {
        margin-bottom: 1em;
    }

    .imh-pid {
        color: #888;
    }

    .panel-body {
        padding-bottom: 5px;
        display: block;
    }

    .imh-collapsible-content {
        max-height: 33333px;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .imh-collapsible-content[aria-hidden="true"] {
        max-height: 0;
    }

    .imh-toggle-btn {
        background: #eee;
        border: 1px solid #999;
        border-radius: 4px;
        cursor: pointer;
        margin-left: 0.5em;
        padding: 2px 10px;
        font-family: monospace;
        font-size: larger;
    }

    .imh-toggle-btn:hover {
        background: #ddd;
        font-weight: bold;
        color: #333;
    }

    .imh-larger-text {
        font-size: 1.5em;
    }

    .imh-table-responsive {
        width: 100%;
        overflow-x: auto;
    }

    @media (max-width: 600px) {

        .sys-snap-tables,
        .imh-box,
        .imh-box--narrow,
        .imh-footer-box {
            width: 100% !important;
            min-width: 350px;
            font-size: 0.97em;
        }

        .imh-piechart-col {
            width: 100% !important;
            display: block;
            box-sizing: border-box;
        }

        .sys-snap-tables th,
        .sys-snap-tables td {
            padding: 4px 4px;
        }

        /* Optionally stack the pie chart columns vertically */
        .sys-snap-tables tr {
            display: flex;
            flex-direction: column;
        }
    }

    .chart-container {
        max-height: 800px !important;
        max-width: 800px !important;
        display: block;
        margin-left: auto;
        margin-right: auto;
        background: #fff;
    }

    #PiechartUsersCPU,
    #PiechartUsersMemory {
        width: 100% !important;
        max-width: 100%;
    }
</style>

<?php





// ==========================
// 4. Main Interface
// ==========================

$img_src = $isCWPServer ? 'design/img/imh-snap-stat.png' : 'imh-snap-stat.png';
echo '<h1 class="imh-title"><img src="' . htmlspecialchars($img_src) . '" alt="sys-snap" class="imh-title-img" />SnapStat</h1>';



// This is the tab selector for the two main sections: sys-snap and 24-hour statistics.

echo '<div class="tabs-nav" id="imh-tabs-nav">
    <button type="button" class="active" data-tab="tab-sys-snap" aria-label="System Snapshot tab">System Snapshot (sys-snap)</button>
    <button type="button" data-tab="tab-loadavg" aria-label="24 Hour Statistics tab">24 Hour Statistics (sysstat)</button>
</div>';





// Tab selector script

?>

<script>
    // Tab navigation functionality

    document.querySelectorAll('#imh-tabs-nav button').forEach(function(btn) {
        btn.addEventListener('click', function() {
            // Remove 'active' class from all buttons and tab contents
            document.querySelectorAll('#imh-tabs-nav button').forEach(btn2 => btn2.classList.remove('active'));
            document.querySelectorAll('.tab-content').forEach(tab => tab.classList.remove('active'));
            // Activate this button and the corresponding tab
            btn.classList.add('active');
            var tabId = btn.getAttribute('data-tab');
            document.getElementById(tabId).classList.add('active');
        });
    });

    // Each user section can be collapsed or expanded with a button.

    document.addEventListener('DOMContentLoaded', function() {
        document.querySelectorAll('.imh-toggle-btn').forEach(function(btn) {
            btn.addEventListener('click', function() {
                var targetId = btn.getAttribute('data-target');
                var collapsed = btn.getAttribute('data-collapsed') === '1';
                var content = document.getElementById(targetId);

                if (collapsed) {
                    // Expand
                    content.setAttribute('aria-hidden', 'false');
                    btn.innerText = '[–]';
                    btn.setAttribute('data-collapsed', '0');
                    btn.setAttribute('aria-expanded', 'true');
                } else {
                    // Collapse
                    content.setAttribute('aria-hidden', 'true');
                    btn.innerText = '[+]';
                    btn.setAttribute('data-collapsed', '1');
                    btn.setAttribute('aria-expanded', 'false');
                }
            });
        });
    });
</script>
<?php






// ==========================
// 5. sys-snap Tab
// ==========================

$allowed_actions = ['start']; // And perhaps 'stop'
$action_output = '';
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['action']) && in_array($_POST['action'], $allowed_actions, true)) {
    $action = $_POST['action'];
    //'Stop' didn't work so good in testing.
    if ($action === 'stop') {
        $stop_cmd = "echo y | /usr/bin/perl /opt/imh-sys-snap/bin/sys-snap.pl --stop 2>&1";
        //$action_output = safe_shell_exec($stop_cmd, 5);  
    } elseif ($action === 'start') {
        $start_cmd = "echo y | /usr/bin/perl /opt/imh-sys-snap/bin/sys-snap.pl --start 2>&1";
        $action_output = safe_shell_exec($start_cmd, 5);
    }
}


// Check current status
$status_cmd = '/usr/bin/perl /opt/imh-sys-snap/bin/sys-snap.pl --check 2>&1';
$status_output = safe_shell_exec($status_cmd, 3);
$is_running = false;
$pid = null;

if (preg_match("/Sys-snap is running, PID:\s*'(\d+)'/", $status_output, $m)) {
    $is_running = true;
    $pid = $m[1];
}

echo '<div id="tab-sys-snap" class="tab-content active">';

// Info box

function formatElapsedTime($seconds)
{
    $seconds = (int)$seconds;
    $days = floor($seconds / 86400);
    $hours = floor(($seconds % 86400) / 3600);
    $mins = floor(($seconds % 3600) / 60);

    $out = [];
    if ($days > 0) $out[] = "{$days}d";
    if ($hours > 0 || $days > 0) $out[] = "{$hours}h";
    $out[] = "{$mins}m";

    return implode(', ', $out);
}

echo "<div class='imh-box imh-box.margin-bottom'><p class='imh-larger-text'><a target='_blank' href='https://github.com/CpanelInc/tech-SysSnapv2'>sys-snap</a> logs CPU and memory usage on a rolling 24-hour cycle, every minute.</p>";

// Status box

echo '<div class="imh-box">';
if ($is_running) {
    $etime = null;
    if ($pid) {
        $etime = trim(safe_shell_exec('ps -p ' . intval($pid) . ' -o etimes= 2>/dev/null', 2));
    }
    $runtime_str = '';
    if (ctype_digit($etime)) {
        $runtime_str = formatElapsedTime($etime);
    }
    echo '<span class="imh-status imh-status-running">';
    echo 'Running';
    if ($runtime_str) {
        echo ' for ' . htmlspecialchars($runtime_str);
    }
    echo '</span>';
    echo "<span class='imh-pid'>PID: " . intval($pid) . '</span>';
} else {
    echo '<span class="imh-status imh-status-notrunning">';
    echo 'Not Running';
    echo '</span>';

    // Start button.
    echo '
<form method="post">
  <input type="hidden" name="csrf_token" value="' . htmlspecialchars($CSRF_TOKEN) . '">
  <input type="hidden" name="form"       value="sys_snap_control">
  <input type="hidden" name="action"     value="start"> 
  <button type="submit">Start sys-snap</button>
</form>
    ';
}
echo '</div>';


// System output, if the button was used to start sys-snap

if ($action_output) {
    echo "<pre class='imh-pre'>"
        . htmlspecialchars($action_output) . "</pre>";
}

echo "<p>Review the <code>24 Hour Statistics</code> to identify time ranges of interest.</p><br/>";

echo "<p><strong>CPU Score</strong>: 1 = 1% of a CPU<br/>
<strong>Memory Score</strong>: 1 = 1% of total memory</p>";

echo "</div>";







// Set Time Range form

echo '<form method="post" class="imh-box">
<input type="hidden" name="csrf_token" value="' . htmlspecialchars($CSRF_TOKEN) . '">
<input type="hidden" name="form" value="time_range">
';
echo "<p class='imh-server-time'>" . htmlspecialchars($server_time) . "</p>";

echo 'Start: <select name="start_hour">';
for ($i = 0; $i < 24; $i++) echo "<option value='$i'" . ($i == $start_hour ? ' selected' : '') . ">$i</option>";
echo '</select> : <select name="start_min">';
for ($i = 0; $i < 60; $i++) {
    echo "<option value='$i'" . ($i == $start_min ? ' selected' : '') . ">" .
        sprintf("%02d", $i) .
        "</option>";
}
echo '</select>';

echo ' &nbsp; End: <select name="end_hour">';
for ($i = 0; $i < 24; $i++) echo "<option value='$i'" . ($i == $end_hour ? ' selected' : '') . ">$i</option>";
echo '</select> : <select name="end_min">';
for ($i = 0; $i < 60; $i++) {
    echo "<option value='$i'" . ($i == $end_min ? ' selected' : '') . ">" .
        sprintf("%02d", $i) .
        "</option>";
}
echo '</select>';

echo ' <input type="submit" name="set_time" value="Set New Time Range" class="imh-btn">';
if ($start_hour != 0 || $start_min != 0 || $end_hour != 23 || $end_min != 59) {
    echo ' <input type="submit" name="reset_time" value="Reset Time Range" class="imh-btn imh-red-btn">';
}
echo '</form>';










//Sys-snap output

echo '<h2 class="imh-spacer">Scores from ' . sprintf('%02d:%02d', $start_hour, $start_min) . ' to ' . sprintf('%02d:%02d', $end_hour, $end_min) . '</h2>';

$start_time_arg = sprintf('%02d:%02d', $start_hour, $start_min);
$end_time_arg = sprintf('%02d:%02d', $end_hour, $end_min);

$sys_snap_cmd = '/usr/bin/perl /opt/imh-sys-snap/bin/sys-snap.pl --print ' .
    escapeshellarg($start_time_arg) . ' ' .
    escapeshellarg($end_time_arg) . ' -v 2>&1';

$cache_ttl = 60; // seconds
$cache_tag = "sys_snap_{$start_hour}_{$start_min}_{$end_hour}_{$end_min}";
$output = imh_cached_shell_exec($cache_tag, $sys_snap_cmd, $cache_ttl);



if (!$output || $output === null) {
    echo "<div class='alert alert-danger imh-spacer imh-alert'>Could not get output from sys-snap.<br/>Check if the script is running and accessible.</div>";

    if ($isCPanelServer) {
        WHM::footer();
    } else {
        echo '</div>'; // Close panel-body
    }
    exit;
}








// Parse output

function parseSysSnap($text)
{
    $lines = explode("\n", $text);
    $results = [];
    $currentUser = null;
    $currentSection = null;

    foreach ($lines as $line) {
        $trim = trim($line);

        // User Section
        if (preg_match('/^user:\s+(\S+)/', $line, $m)) {
            $currentUser = $m[1];
            $results[$currentUser] = [
                'cpu-score' => null,
                'cpu-list' => [],
                'memory-score' => null,
                'memory-list' => []
            ];
            $currentSection = null;
            continue;
        }

        // CPU score
        if (preg_match('/cpu-score:\s+([0-9\.]+)/', $line, $m) && $currentUser) {
            $results[$currentUser]['cpu-score'] = $m[1];
            $currentSection = 'cpu-list';
            continue;
        }

        // memory score
        if (preg_match('/memory-score:\s+([0-9\.]+)/', $line, $m) && $currentUser) {
            $results[$currentUser]['memory-score'] = $m[1];
            $currentSection = 'memory-list';
            continue;
        }

        // CPU process
        if (preg_match('/C:\s*([0-9\.]+)\s*proc:\s*(.*)$/', $trim, $m) && $currentUser && $currentSection == 'cpu-list') {
            $results[$currentUser]['cpu-list'][] = ['score' => $m[1], 'proc' => $m[2]];
            continue;
        }

        // Memory process
        if (preg_match('/M:\s*([0-9\.]+)\s*proc:\s*(.*)$/', $trim, $m) && $currentUser && $currentSection == 'memory-list') {
            $results[$currentUser]['memory-list'][] = ['score' => $m[1], 'proc' => $m[2]];
            continue;
        }
    }

    return $results;
}








// Display sys-snap data

function cleanProcName($proc)
{
    // Remove all leading "tree" decorations (like "| ", "\_ ", any whitespace), possibly repeated.
    return preg_replace('/^[\|\s\\\\\_]+/', '', $proc);
}

$data = parseSysSnap($output);






// Output data for the pie graph

$pieDataCPU = [];
foreach ($data as $user => $vals) {
    $pieDataCPU[] = [
        'user' => $user,
        'cpuScore' => floatval($vals['cpu-score'])
    ];
};

$pieDataMemory = [];
// Sort $data by memory-score descending for the pie chart
$sortedByMemory = $data;
uasort($sortedByMemory, function ($a, $b) {
    return floatval($b['memory-score']) <=> floatval($a['memory-score']);
});
foreach ($sortedByMemory as $user => $vals) {
    $pieDataMemory[] = [
        'user' => $user,
        'memoryScore' => floatval($vals['memory-score'])
    ];
};

echo "<script>
window.sysSnapPieDataCPU = " . json_encode($pieDataCPU) . ";
window.sysSnapPieDataMemory = " . json_encode($pieDataMemory) . ";
</script>";







// --- User Summary Table ---
echo '<div class="imh-box">';
echo '<table class="sys-snap-tables">';
echo '<thead>';
echo '<th>User</th>';
echo '<th>CPU Score<br/>1 = 1% of a CPU</th>';
echo '<th>Memory Score<br/>1 = 1% of total memory</th>';
echo '</thead>';

$row_idx = 0;

foreach ($data as $user => $vals) {
    // Anchor ID for the user section
    $anchor = 'user-' . rawurlencode($user);
    $row_class = ($row_idx % 2 === 1) ? " class='odd-num-table-row'" : "";
    echo "<tr$row_class>";

    $row_idx++;

    if ($isCPanelServer) {
        echo '<td><strong><a href="#' . $anchor . '">' . htmlspecialchars($user) . '</a></strong></td>';
    } else {
        echo '<td><strong>' . htmlspecialchars($user) . '</strong></td>';
    }
    echo '<td class="text-right">' . htmlspecialchars($vals['cpu-score']) . '</td>';
    echo '<td class="text-right">' . htmlspecialchars($vals['memory-score']) . '</td>';
    echo '</tr>';
}
echo '</table>';
echo '</div>';

// Pie chart container
echo '
<div class="imh-box imh-table-responsive">
<table class="sys-snap-tables imh-width-full">
    <thead>
        <th class="imh-piechart-col">CPU Usage by User<br/>1 = 1% of a CPU</th>
        <th class="imh-piechart-col">Memory Usage by User<br/>1 = 1% of total memory</th>
    </thead>
    <tr class="imh-piechart-row">
        <td class="imh-piechart-col">
            <div id="PiechartUsersCPU"></div>
        </td>
        <td class="imh-piechart-col">
            <div id="PiechartUsersMemory"></div>
        </td>
    </tr>
</table>
</div>
';

// --- User Details Sections ---
// Each user has a collapsible section with CPU and Memory details.

echo '<div class="imh-spacer imh-monospace">';
foreach ($data as $user => $vals) {
    $anchor = 'user-' . rawurlencode($user);

    // Unique ID for JS target
    $collapse_id = 'user-details-' . md5($user);

    echo "<div id='$anchor' class='imh-spacer imh-monospace imh-user-section'>";
    echo "<h2 style='display:inline-block;'>User: <span class='imh-user-name'>" . htmlspecialchars($user) . "</span></h2>";


    // Use data attributes for the toggle target and state
    echo " <button class='imh-toggle-btn' data-target='$collapse_id' data-collapsed='0' aria-expanded='true' style='margin-left:1em;font-size:1em;vertical-align:middle;'>[–]</button>";


    // Collapsible content container

    echo "<div id='$collapse_id' class='imh-collapsible-content'>";


    // CPU
    echo "<h3>CPU Score: " . htmlspecialchars($vals['cpu-score']) . "</h3>";
    echo "<table class='sys-snap-tables'>";
    echo "<thead><th>CPU</th><th>Process</th></thead>";

    $cpu_row_idx = 0;

    foreach ($vals['cpu-list'] as $row) {
        $cpu_row_class = ($cpu_row_idx % 2 === 1) ? " class='imh-table-alt'" : "";
        echo "<tr$cpu_row_class>";
        $cpu_row_idx++;
        echo "<td class='text-right'>" . htmlspecialchars($row['score']) . "</td>";
        echo "<td>" . htmlspecialchars(cleanProcName($row['proc'])) . "</td>";
        echo "</tr>";
    }
    echo "</table>";

    // Memory
    echo "<h3>Memory Score: " . htmlspecialchars($vals['memory-score']) . "</h3>";
    echo "<table class='sys-snap-tables'>";
    echo "<thead><th>Memory</th><th>Process</th></thead>";

    $mem_row_idx = 0;

    foreach ($vals['memory-list'] as $row) {
        $mem_row_class = ($mem_row_idx % 2 === 1) ? " class='imh-table-alt'" : "";
        echo "<tr$mem_row_class>";
        $mem_row_idx++;
        echo "<td class='text-right'>" . htmlspecialchars($row['score']) . "</td>";
        echo "<td>" . htmlspecialchars(cleanProcName($row['proc'])) . "</td>";
        echo "</tr>";
    }
    echo "</table>";

    // End collapsible
    echo "</div>";

    echo "</div>";
}
echo "</div>";





//End of sys-snap tab content
echo "</div>";












// ==========================
// 6. 24-hour Statistics Tab
// ==========================

class SarDataProcessor
{
    private const SAR_LOG_PATHS = [
        '/var/log/sa/sa',      // Standard location
        '/var/log/sysstat/sa'  // Alternative location
    ];
    private const DEFAULT_Q_HEADER = ['Time', 'runq-sz', 'plist-sz', 'ldavg-1', 'ldavg-5', 'ldavg-15', 'blocked'];
    private const DEFAULT_B_HEADER = ['Time', 'pgpgin/s', 'pgpgout/s', 'fault/s', 'majflt/s', 'pgfree/s', 'pgscank/s', 'pgscand/s', 'pgsteal/s', '%vmeff'];
    private const B_COLUMNS_TO_MERGE = ['pgpgin/s', 'pgpgout/s', 'fault/s', 'majflt/s'];
    private $sarLogPath;
    private $currentTime;
    private $today;
    private $yesterday;
    private $sarInterval;

    public function __construct()
    {
        $this->initializeTimezone();
        $this->initializeDates();
        $this->sarInterval = imh_guess_sar_interval();
        $this->determineSarLogPath();
    }

    public function getSarData(): array
    {
        $sarQData = $this->getSarQData();
        if (!$sarQData['data']) {
            return ['success' => false, 'error' => 'Could not get sar -q data'];
        }
        $sarBData = $this->getSarBData();
        $mergedData = $this->mergeSarData($sarQData['data'], $sarBData['data']);
        $finalHeader = $this->createFinalHeader($sarQData['header']);
        return [
            'success' => true,
            'header' => $finalHeader,
            'data' => $mergedData
        ];
    }

    private function initializeTimezone(): void
    {
        $shortName = exec('date +%Z');
        $longName = timezone_name_from_abbr($shortName);
        if ($longName) {
            date_default_timezone_set($longName);
        }
    }
    private function initializeDates(): void
    {
        $now = time();
        $this->currentTime = date('H:i:s', $now);
        $this->today = date('d', $now);
        $this->yesterday = date('d', strtotime('yesterday', $now));
    }
    private function getSarQData(): array
    {
        $output = $this->executeSarCommands('-q');
        $lines = $this->mergeAndFilterLines($output, 'runq-sz');
        $header = $this->extractHeader($lines, '/runq-sz\s+plist-sz\s+ldavg-1\s+ldavg-5\s+ldavg-15\s+blocked/', self::DEFAULT_Q_HEADER);
        $data = $this->parseDataLines($lines, $header);
        return ['header' => $header, 'data' => $data];
    }
    private function getSarBData(): array
    {
        $output = $this->executeSarCommands('-B');
        $lines = $this->mergeAndFilterLines($output, 'pgpgin/s');
        $header = $this->extractHeader($lines, '/pgpgin\/s\s+pgpgout\/s\s+fault\/s\s+majflt\/s/', self::DEFAULT_B_HEADER);
        $data = $this->parseDataLines($lines, $header);
        return ['header' => $header, 'data' => $data];
    }
    private function determineSarLogPath(): void
    {
        foreach (self::SAR_LOG_PATHS as $path) {
            // Check if yesterday's log file exists at this path
            if (file_exists($path . $this->yesterday) || file_exists($path . $this->today)) {
                $this->sarLogPath = $path;
                return;
            }
        }

        // Default to standard location if no files found
        $this->sarLogPath = self::SAR_LOG_PATHS[0];
    }
    private function executeSarCommands(string $option): array
    {
        // For yesterday: cache for the day
        $tag1 = 'sar' . preg_replace('/[^a-zA-Z0-9]/', '', $option) . '_yesterday_' . $this->yesterday;

        // For today: cache by "hour" or "quarter hour" to balance freshness and not over-caching
        $now = time();
        $hour = date('H', $now);
        // Optionally, use 10-min intervals to be more granular
        $ten_min = floor(date('i', $now) / 10) * 10;
        $tag2 = 'sar' . preg_replace('/[^a-zA-Z0-9]/', '', $option) . '_today_' . $this->today . "_h{$hour}_m{$ten_min}";

        $cmd1 = "LANG=C sar {$option} -f " . $this->sarLogPath . "{$this->yesterday} -s {$this->currentTime}";
        $cmd2 = "LANG=C sar {$option} -f " . $this->sarLogPath . "{$this->today} -e {$this->currentTime}";
        return [
            imh_cached_shell_exec($tag1, $cmd1, $this->sarInterval),
            imh_cached_shell_exec($tag2, $cmd2, $this->sarInterval)
        ];
    }

    private function mergeAndFilterLines(array $outputs, string $headerPattern): array
    {
        $allLines = [];

        foreach ($outputs as $index => $output) {
            $lines = array_filter(array_map('trim', explode("\n", $output)));

            // Remove headers from second output
            if ($index > 0) {
                $lines = array_filter($lines, function ($line) use ($headerPattern) {
                    return strpos($line, $headerPattern) === false;
                });
            }

            $allLines = array_merge($allLines, $lines);
        }
        return $this->filterDataLines($allLines);
    }
    private function filterDataLines(array $lines): array
    {
        return array_filter($lines, function ($line) {
            $trimmed = trim($line);
            return $trimmed
                && strpos($trimmed, 'Average:') !== 0
                && strpos($trimmed, 'Linux') !== 0
                && !preg_match('/runq-sz\s+plist-sz\s+ldavg-1/', $trimmed)
                && !preg_match('/pgpgin\/s\s+pgpgout\/s\s+fault\/s/', $trimmed);
        });
    }
    private function extractHeader(array $lines, string $pattern, array $defaultHeader): array
    {
        foreach ($lines as $line) {
            if (preg_match($pattern, $line)) {
                $headerParts = preg_split('/\s+/', trim($line));
                return array_merge(['Time'], array_slice($headerParts, 1));
            }
        }

        return $defaultHeader;
    }
    private function parseDataLines(array $lines, array $header): array
    {
        $data = [];

        foreach ($lines as $line) {
            $row = preg_split('/\s+/', trim($line));

            if (count($row) < count($header)) {
                continue;
            }
            $time = $row[0];
            $values = array_slice($row, 1, count($header) - 1);

            if (count($values) === count($header) - 1) {
                $data[] = array_combine($header, array_merge([$time], $values));
            }
        }

        return $data;
    }
    private function mergeSarData(array $sarQData, array $sarBData): array
    {
        $bDataMap = [];
        foreach ($sarBData as $row) {
            $bDataMap[$row['Time']] = $row;
        }
        $merged = [];
        foreach ($sarQData as $qRow) {
            $time = $qRow['Time'];
            $mergedRow = $qRow;

            if (isset($bDataMap[$time])) {
                foreach (self::B_COLUMNS_TO_MERGE as $column) {
                    $mergedRow[$column] = $bDataMap[$time][$column] ?? '';
                }
            } else {
                foreach (self::B_COLUMNS_TO_MERGE as $column) {
                    $mergedRow[$column] = '';
                }
            }

            $merged[] = $mergedRow;
        }

        return $merged;
    }
    private function createFinalHeader(array $qHeader): array
    {
        return array_merge($qHeader, array_diff(self::B_COLUMNS_TO_MERGE, $qHeader));
    }
}

class SarTableRenderer
{
    private $csrfToken;
    public function __construct(string $csrfToken)
    {
        $this->csrfToken = $csrfToken;
    }
    public function render(array $sarData): string
    {
        if (!$sarData['success']) {
            return "<div class='imh-alert'>{$sarData['error']}</div>";
        }
        $output = $this->renderExplanation();
        $output .= $this->renderTable($sarData['header'], $sarData['data']);
        $output .= $this->renderFooterNotes();
        return $output;
    }
    private function renderExplanation(): string
    {
        return "
        <div class='imh-box--narrow'>
            <p class='imh-larger-text imh-box.margin-bottom'><a href='https://github.com/sysstat/sysstat' target='_blank'>sysstat</a> collects, reports and saves system activity information.</p>
            <h3>Queue length and load average statistics (<code>sar -q</code>)</h3>
            <p>
                <strong>runq-sz</strong> - Number of processes waiting for run time (run queue size)<br/>
                <strong>plist-sz</strong> - Number of processes in the process list<br/>
                <strong>ldavg-1</strong> - System load average for the last 1 minute<br/>
                <strong>ldavg-5</strong> - System load average for the last 5 minutes<br/>
                <strong>ldavg-15</strong> - System load average for the last 15 minutes<br/>
                <strong>blocked</strong> - Number of processes currently blocked, waiting for I/O<br/>
            </p>
            <h3>Paging statistics (<code>sar -B</code>)</h3>
            <p>
                <strong>pgpgin/s</strong> - Kilobytes paged in from disk per second<br/>
                <strong>pgpgout/s</strong> - Kilobytes paged out to disk per second<br/>
                <strong>fault/s</strong> - Number of page faults per second<br/>
                <strong>majflt/s</strong> - Number of major page faults per second (requiring disk access)
            </p>
        </div>";
    }
    private function renderTable(array $header, array $data): string
    {
        $output = "<table class='sys-snap-tables'><thead>";

        foreach ($header as $column) {
            $output .= "<th>" . htmlspecialchars($column) . "</th>";
        }

        $output .= "</thead><tbody>";
        $previousTime = null;
        foreach ($data as $index => $row) {
            $timeInterval = $this->calculateTimeInterval($row['Time'], $previousTime);
            $rowClass = ($index % 2 === 1) ? " class='imh-table-alt'" : "";

            $output .= "<tr{$rowClass}>";

            foreach ($header as $columnIndex => $column) {
                if ($columnIndex === 0) {
                    $output .= $this->renderTimeCell($row[$column], $timeInterval);
                } else {
                    $output .= "<td class='text-right'>" . htmlspecialchars($row[$column] ?? '') . "</td>";
                }
            }

            $output .= "</tr>";
            $previousTime = $this->parseTime($row['Time']);
        }
        return $output . "</tbody></table>";
    }
    private function calculateTimeInterval(string $currentTimeStr, ?DateTime $previousTime): array
    {
        $currentTime = $this->parseTime($currentTimeStr);
        if (!$currentTime) {
            return ['start_hour' => 0, 'start_min' => 0, 'end_hour' => 0, 'end_min' => 0];
        }
        if ($previousTime) {
            $startTime = $previousTime;
            $endTime = $currentTime;
        } else {
            $startTime = clone $currentTime;
            $endTime = clone $currentTime;
            $endTime->modify('+1 minute');
        }
        return [
            'start_hour' => (int)$startTime->format('H'),
            'start_min' => (int)$startTime->format('i'),
            'end_hour' => (int)$endTime->format('H'),
            'end_min' => (int)$endTime->format('i')
        ];
    }
    private function parseTime(string $timeStr): ?DateTime
    {
        $format = (stripos($timeStr, 'AM') !== false || stripos($timeStr, 'PM') !== false)
            ? 'h:i:s A'
            : 'H:i:s';

        return DateTime::createFromFormat($format, $timeStr) ?: null;
    }
    private function renderTimeCell(string $time, array $interval): string
    {
        return "
        <td class='text-right'>
            <form method='post' style='display:inline;' class='sar-time-link-form'>
                <input type='hidden' name='csrf_token' value='" . htmlspecialchars($this->csrfToken) . "'>
                <input type='hidden' name='form' value='time_range'>
                <input type='hidden' name='start_hour' value='{$interval['start_hour']}'>
                <input type='hidden' name='start_min' value='{$interval['start_min']}'>
                <input type='hidden' name='end_hour' value='{$interval['end_hour']}'>
                <input type='hidden' name='end_min' value='{$interval['end_min']}'>
                <a href='#' onclick='this.closest(\"form\").submit(); return false;' title='View sys-snap for this interval'>" . htmlspecialchars($time) . "</a>
            </form>
        </td>";
    }
    private function renderFooterNotes(): string
    {
        return "
        <p class='imh-small-note'>Click a time to load sys-snap for that interval.</p>
        <p class='imh-small-note'>Values are from the most recent sar -q and sar -B samples.</p>";
    }
}
// Usage
echo '<div id="tab-loadavg" class="tab-content">';


$processor = new SarDataProcessor();
$renderer = new SarTableRenderer($CSRF_TOKEN);
$sarData = $processor->getSarData();
echo $renderer->render($sarData);

echo "<script>
window.sysSnapSarLoadavgData = " . json_encode($sarData['data']) . ";
window.sysSnapSarPagingData = " . json_encode($sarData['data']) . ";
</script>";
echo '<div class="imh-box imh-box.margin-bottom"><div id="LinechartLoadavg"></div></div>';
echo '<div class="imh-box imh-box.margin-bottom"><div id="LinechartPaging"></div></div>';

echo '</div>';



$jsPath = $isCWPServer ? 'design/js/imh-snap-stat.js' : 'imh-snap-stat.js';

if ($isCPanelServer) {
    echo '<script type="module" crossorigin src="imh-snap-stat.js"></script>';
} else {
    echo '<script type="module" crossorigin src="' . htmlspecialchars($jsPath) . '"></script>';
}



// ==========================
// 7. HTML Footer
// ==========================

echo '<div class="imh-footer-box"><img src="' . htmlspecialchars($img_src) . '" alt="sys-snap" class="imh-footer-img" /><p><a href="https://github.com/CpanelInc/tech-SysSnapv2" target="_blank">sys-snap</a> by Bryan Christensen.</p><p>Plugin by <a href="https://inmotionhosting.com" target="_blank">InMotion Hosting</a>.</p></div>';




if ($isCPanelServer) {
    WHM::footer();
} else {
    echo '</div>';
};
F1l3 Manager
