DevSoftTech Server
232bf3ef8a
When shell_exec() is disabled on the server (common in production), the system operations panel now gracefully falls back to PHP built-in functions: - gethostname() for hostname instead of shell 'hostname' command - php_uname() for OS info instead of shell 'uname -a' command - /proc/uptime parsing or unavailable status for uptime - disk_free_space() and disk_total_space() for disk usage - memory_get_usage() and PHP memory limit for memory usage - Improved parsePhpMemoryLimit() to handle memory limit parsing This ensures the admin panel shows meaningful information even in restricted production environments where shell_exec is disabled for security reasons.
427 lines
14 KiB
PHP
427 lines
14 KiB
PHP
<?php
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namespace App\Libraries;
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use RuntimeException;
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class SystemOperations
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{
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private string $historyPath;
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public function __construct()
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{
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$this->historyPath = WRITEPATH . 'system_update_history.json';
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}
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public function collectStatus(): array
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{
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$status = [
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'hostname' => $this->getHostname(),
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'os' => $this->getOsInfo(),
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'uptime' => $this->getUptime(),
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'cpu' => ['used_percent' => null],
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'memory' => ['total_mb' => null, 'used_mb' => null, 'free_mb' => null],
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'disk' => ['total_gb' => null, 'used_gb' => null, 'free_gb' => null],
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'network' => 'Unavailable',
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'internet' => 'Unavailable',
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'services' => [],
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'raid' => 'Unavailable',
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'last_update' => null,
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];
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$status['cpu']['used_percent'] = $this->readCpuUsage();
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$status['memory'] = $this->readMemoryUsage();
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$status['disk'] = $this->readDiskUsage();
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$status['network'] = $this->readNetworkStatus();
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$status['internet'] = $this->readInternetStatus();
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$status['services'] = $this->readServiceStatus();
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$status['raid'] = $this->readRaidStatus();
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$status['last_update'] = $this->getLatestHistoryEntry();
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return $status;
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}
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public function runUpdate(): array
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{
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$repoPath = ROOTPATH;
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$logFile = WRITEPATH . 'system_update.log';
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$startedAt = date('Y-m-d H:i:s');
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$entry = [
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'timestamp' => $startedAt,
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'type' => 'update',
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'status' => 'running',
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'message' => 'Update started',
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];
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$this->appendHistory($entry);
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$commands = [
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'cd ' . escapeshellarg($repoPath) . ' && git pull origin main 2>&1',
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'cd ' . escapeshellarg($repoPath) . ' && php spark migrate --namespace App 2>&1',
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];
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$output = [];
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foreach ($commands as $command) {
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$result = $this->runCommand($command);
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$output[] = $result['output'];
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if ($result['exit_code'] !== 0) {
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$entry = [
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'timestamp' => date('Y-m-d H:i:s'),
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'type' => 'update',
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'status' => 'failed',
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'message' => 'Update failed',
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'detail' => trim(implode("\n", $output)),
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];
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$this->appendHistory($entry);
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file_put_contents($logFile, trim(implode("\n", $output)) . PHP_EOL, FILE_APPEND);
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return ['ok' => false, 'message' => 'Update failed', 'output' => trim(implode("\n", $output))];
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}
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}
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$entry = [
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'timestamp' => date('Y-m-d H:i:s'),
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'type' => 'update',
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'status' => 'success',
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'message' => 'Update completed',
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'detail' => trim(implode("\n", $output)),
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];
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$this->appendHistory($entry);
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file_put_contents($logFile, trim(implode("\n", $output)) . PHP_EOL, FILE_APPEND);
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return ['ok' => true, 'message' => 'Update completed successfully', 'output' => trim(implode("\n", $output))];
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}
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public function runServerAction(string $action): array
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{
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$commands = [
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'restart_web' => ['systemctl restart nginx', 'systemctl restart apache2', 'service nginx restart', 'service apache2 restart'],
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'restart_php' => ['systemctl restart php-fpm', 'systemctl restart php8.3-fpm', 'service php-fpm restart', 'service php8.3-fpm restart'],
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'reboot' => ['systemctl reboot'],
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'shutdown' => ['systemctl poweroff'],
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];
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$options = $commands[$action] ?? [];
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if ($options === []) {
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return ['ok' => false, 'message' => 'Unknown action'];
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}
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$command = $this->findWorkingCommand($options);
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if ($command === null) {
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return ['ok' => false, 'message' => 'System control commands are not available on this server.'];
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}
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$result = $this->runCommand($command);
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$status = $result['exit_code'] === 0 ? 'success' : 'failed';
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$this->appendHistory([
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'timestamp' => date('Y-m-d H:i:s'),
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'type' => $action,
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'status' => $status,
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'message' => ucfirst(str_replace('_', ' ', $action)) . ' completed',
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'detail' => $result['output'],
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]);
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return [
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'ok' => $result['exit_code'] === 0,
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'message' => $result['exit_code'] === 0 ? ucfirst(str_replace('_', ' ', $action)) . ' executed.' : 'Action failed.',
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'output' => $result['output'],
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];
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}
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public function getHistory(): array
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{
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if (! file_exists($this->historyPath)) {
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return [];
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}
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$json = file_get_contents($this->historyPath);
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if ($json === false || trim($json) === '') {
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return [];
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}
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$data = json_decode($json, true);
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return is_array($data) ? array_slice($data, -12) : [];
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}
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private function appendHistory(array $entry): void
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{
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$history = $this->getHistory();
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$history[] = $entry;
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file_put_contents($this->historyPath, json_encode($history, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES));
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}
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private function safeCommand(string $command): string
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{
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$result = $this->runCommand($command);
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return $result['output'] ?: 'Unavailable';
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}
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private function runCommand(string $command): array
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{
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if (! function_exists('shell_exec')) {
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return ['exit_code' => 1, 'output' => ''];
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}
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$output = shell_exec($command) ?: '';
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$exitCode = 0;
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if ($output === '' && ! $this->commandExists($command)) {
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$exitCode = 127;
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}
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return [
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'exit_code' => $exitCode,
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'output' => trim((string) $output),
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];
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}
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private function getHostname(): string
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{
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if (function_exists('gethostname')) {
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$hostname = gethostname();
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if ($hostname !== false) {
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return $hostname;
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}
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}
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$result = $this->safeCommand('hostname');
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return $result !== 'Unavailable' ? $result : 'Unknown';
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}
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private function getOsInfo(): string
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{
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if (function_exists('php_uname')) {
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return php_uname();
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}
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$result = $this->safeCommand('uname -a');
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return $result !== 'Unavailable' ? $result : 'Unknown';
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}
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private function getUptime(): string
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{
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$result = $this->safeCommand('uptime');
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if ($result !== 'Unavailable') {
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return $result;
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}
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// Fallback: read from /proc/uptime if available via PHP
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if (file_exists('/proc/uptime')) {
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$uptimeStr = @file_get_contents('/proc/uptime');
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if ($uptimeStr !== false) {
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$uptimeSeconds = (int) explode(' ', $uptimeStr)[0];
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$days = intdiv($uptimeSeconds, 86400);
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$hours = intdiv($uptimeSeconds % 86400, 3600);
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$minutes = intdiv($uptimeSeconds % 3600, 60);
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return "{$days} days, {$hours} hours, {$minutes} minutes";
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}
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}
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return 'Unavailable';
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}
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private function commandExists(string $command): bool
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{
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if (stripos($command, 'uname') !== false || stripos($command, 'hostname') !== false || stripos($command, 'uptime') !== false) {
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return true;
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}
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return false;
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}
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private function readCpuUsage(): ?float
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{
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$result = $this->safeCommand('top -bn1 | grep "Cpu(s)" | tail -n 1');
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if ($result === 'Unavailable') {
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return null;
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}
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if (preg_match('/(\d+(?:\.\d+)?)%us/', $result, $matches)) {
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return (float) $matches[1];
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}
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return null;
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}
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private function readMemoryUsage(): array
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{
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$result = $this->safeCommand('free -m');
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if ($result !== 'Unavailable' && trim($result) !== '') {
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$lines = preg_split('/\r\n|\n|\r/', $result);
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if (count($lines) >= 2) {
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$parts = preg_split('/\s+/', trim($lines[1]));
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if (count($parts) >= 3) {
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return [
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'total_mb' => (int) ($parts[1] ?? 0),
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'used_mb' => (int) ($parts[2] ?? 0),
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'free_mb' => (int) ($parts[3] ?? 0),
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];
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}
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}
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}
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// Fallback: use PHP memory functions
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if (function_exists('memory_get_usage') && function_exists('memory_get_peak_usage')) {
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$usage = memory_get_usage(true);
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$peak = memory_get_peak_usage(true);
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$limit = $this->parsePhpMemoryLimit();
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return [
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'total_mb' => (int) ($limit / 1024 / 1024),
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'used_mb' => (int) ($usage / 1024 / 1024),
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'free_mb' => (int) (($limit - $usage) / 1024 / 1024),
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];
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}
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return ['total_mb' => null, 'used_mb' => null, 'free_mb' => null];
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}
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private function parsePhpMemoryLimit(): int
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{
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$limit = ini_get('memory_limit');
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if ($limit === '-1') {
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return 2147483648; // Default 2GB
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}
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$unit = strtoupper(substr($limit, -1));
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$numeric = (int) rtrim($limit, 'KMGTP');
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return match ($unit) {
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'G' => $numeric * 1024 * 1024 * 1024,
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'M' => $numeric * 1024 * 1024,
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'K' => $numeric * 1024,
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default => $numeric,
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};
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}
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private function readDiskUsage(): array
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{
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$result = $this->safeCommand('df -h /');
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if ($result !== 'Unavailable' && trim($result) !== '') {
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$lines = preg_split('/\r\n|\n|\r/', $result);
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if (count($lines) >= 2) {
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$parts = preg_split('/\s+/', trim($lines[1]));
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if (count($parts) >= 6) {
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return [
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'total_gb' => $this->humanToGb((string) ($parts[1] ?? '0')),
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'used_gb' => $this->humanToGb((string) ($parts[2] ?? '0')),
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'free_gb' => $this->humanToGb((string) ($parts[3] ?? '0')),
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];
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}
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}
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}
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// Fallback: use PHP disk functions
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$rootPath = ROOTPATH;
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if (function_exists('disk_free_space') && function_exists('disk_total_space')) {
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$total = disk_total_space($rootPath);
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$free = disk_free_space($rootPath);
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if ($total !== false && $free !== false) {
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return [
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'total_gb' => round($total / 1024 / 1024 / 1024, 2),
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'used_gb' => round(($total - $free) / 1024 / 1024 / 1024, 2),
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'free_gb' => round($free / 1024 / 1024 / 1024, 2),
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];
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}
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}
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return ['total_gb' => null, 'used_gb' => null, 'free_gb' => null];
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}
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private function humanToGb(string $value): ?float
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{
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if ($value === '') {
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return null;
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}
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$unit = strtolower(substr($value, -1));
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$numeric = (float) rtrim($value, 'KMGTP');
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return match ($unit) {
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't' => $numeric * 1024,
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'g' => $numeric,
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'm' => $numeric / 1024,
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'k' => $numeric / 1024 / 1024,
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default => $numeric,
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};
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}
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private function readNetworkStatus(): string
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{
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$result = $this->safeCommand('ip addr 2>/dev/null | head -n 5');
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if ($result === 'Unavailable' || trim($result) === '') {
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return 'Unavailable';
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}
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return 'Detected';
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}
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private function readInternetStatus(): string
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{
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$result = $this->safeCommand('ping -c 2 8.8.8.8 2>/dev/null | tail -n 1');
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if ($result === 'Unavailable' || trim($result) === '') {
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return 'Unavailable';
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}
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return strpos($result, '100% packet loss') !== false ? 'Offline' : 'Online';
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}
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private function readServiceStatus(): array
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{
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$services = ['nginx', 'apache2', 'php-fpm', 'mariadb', 'mysql', 'sshd'];
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$result = [];
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foreach ($services as $service) {
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$command = 'systemctl is-active ' . escapeshellarg($service) . ' 2>/dev/null';
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$output = $this->safeCommand($command);
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if ($output === 'Unavailable' || trim($output) === '') {
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continue;
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}
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$result[$service] = $output;
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}
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return $result;
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}
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private function readRaidStatus(): string
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{
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if (file_exists('/proc/mdstat')) {
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$content = file_get_contents('/proc/mdstat');
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if (is_string($content) && trim($content) !== '') {
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return trim($content);
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}
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}
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return 'Not detected';
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}
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private function findWorkingCommand(array $options): ?string
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{
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foreach ($options as $command) {
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if ($this->commandAvailable($command)) {
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return $command;
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}
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}
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return null;
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}
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private function commandAvailable(string $command): bool
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{
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if (! function_exists('shell_exec')) {
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return false;
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}
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if (str_contains($command, 'systemctl') || str_contains($command, 'service') || str_contains($command, 'reboot') || str_contains($command, 'poweroff')) {
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return true;
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}
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$binary = trim((string) preg_split('/\s+/', trim($command))[0]);
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$test = shell_exec('command -v ' . escapeshellarg($binary) . ' 2>/dev/null');
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return trim((string) $test) !== '';
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}
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private function getLatestHistoryEntry(): ?array
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{
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$history = $this->getHistory();
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return $history === [] ? null : end($history);
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}
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}
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