118 lines
4.0 KiB
PHP
118 lines
4.0 KiB
PHP
<?php
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namespace App\Livewire\Ui\Security;
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use Livewire\Component;
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class Fail2BanCard extends Component
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{
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public bool $available = true; // fail2ban-client vorhanden?
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public bool $permDenied = false; // Socket/Root-Rechte fehlen?
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public int $activeBans = 0; // Summe gebannter IPs über alle Jails
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public array $jails = []; // [['name'=>'sshd','banned'=>2,'ips'=>['1.2.3.4',...]], ...]
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public array $topIps = []; // [['ip'=>'x.x.x.x','count'=>N], ...]
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public function mount(): void
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{
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$this->load();
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}
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public function render()
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{
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return view('livewire.ui.security.fail2-ban-card');
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}
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// Wird vom Button "Neu prüfen" genutzt
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public function refresh(): void
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{
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$this->load(true);
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}
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/* --------------------- intern --------------------- */
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protected function load(bool $force = false): void
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{
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// existiert fail2ban-client?
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$bin = trim((string) @shell_exec('command -v fail2ban-client 2>/dev/null')) ?: '';
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if ($bin === '') {
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$this->available = false;
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$this->permDenied = false;
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$this->activeBans = 0;
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$this->jails = [];
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$this->topIps = [];
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return;
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}
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// ping → prüft zugleich Rechte (bei Permission-Fehler kommt Klartext)
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[$ok, $raw] = $this->f2b('ping'); // ok == "pong" erkannt
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if (!$ok && stripos($raw, 'permission denied') !== false) {
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$this->available = true;
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$this->permDenied = true;
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$this->activeBans = 0;
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$this->jails = [];
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$this->topIps = $this->collectTopIps();
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return;
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}
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// Jails auflisten
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[, $status] = $this->f2b('status');
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$jailsLn = $this->firstMatch('/Jail list:\s*(.+)$/mi', $status);
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$jails = $jailsLn ? array_filter(array_map('trim', preg_split('/\s*,\s*/', $jailsLn))) : [];
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$total = 0; $rows = [];
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foreach ($jails as $j) {
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[, $s] = $this->f2b('status '.escapeshellarg($j));
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$banned = (int) ($this->firstMatch('/Currently banned:\s+(\d+)/i', $s) ?: 0);
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$ipList = $this->firstMatch('/Banned IP list:\s*(.+)$/mi', $s) ?: '';
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$ips = $ipList !== '' ? array_values(array_filter(array_map('trim', preg_split('/\s+/', $ipList)))) : [];
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$rows[] = ['name'=>$j,'banned'=>$banned,'ips'=>array_slice($ips, 0, 8)];
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$total += $banned;
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}
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$this->available = true;
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$this->permDenied = false;
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$this->activeBans = $total;
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$this->jails = $rows;
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$this->topIps = $this->collectTopIps();
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}
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/** führt fail2ban-client via sudo aus; gibt [ok, output] zurück */
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private function f2b(string $args): array
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{
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$sudo = '/usr/bin/sudo';
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$f2b = '/usr/bin/fail2ban-client';
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$cmd = "timeout 2 $sudo -n $f2b $args 2>&1";
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$out = (string) @shell_exec($cmd);
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$ok = stripos($out, 'Status') !== false
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|| stripos($out, 'Jail list') !== false
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|| stripos($out, 'pong') !== false;
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return [$ok, $out];
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}
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private function firstMatch(string $pattern, string $haystack): ?string
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{
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return preg_match($pattern, $haystack, $m) ? trim($m[1]) : null;
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}
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/** Zählt die häufigsten IPs aus den letzten Fail2Ban-Logs (ban/unban Events) */
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private function collectTopIps(): array
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{
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// Zieh nur fail2ban.log, nicht auth/mail – präziser & schneller
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$cmd = 'tail -n 2000 /var/log/fail2ban.log 2>/dev/null'
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. ' | grep -Eo "([0-9]{1,3}\.){3}[0-9]{1,3}"'
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. ' | sort | uniq -c | sort -nr | head -5';
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$log = (string) @shell_exec($cmd);
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$rows = [];
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if ($log !== '') {
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foreach (preg_split('/\R+/', trim($log)) as $l) {
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if (preg_match('/^\s*(\d+)\s+(\d+\.\d+\.\d+\.\d+)/', $l, $m)) {
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$rows[] = ['ip'=>$m[2], 'count'=>(int)$m[1]];
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}
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}
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}
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return $rows;
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}
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}
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