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<?php |
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defined('ABSPATH') or die('Unauthorized Access'); |
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|
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class Phpinfo_WP_Alerts { |
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|
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const OPT = 'phpinfowp_alert_settings'; |
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|
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private static function _pro(): bool { return Phpinfo_WP_License::is_valid(); } |
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|
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public static function get_settings(): array { |
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return wp_parse_args(get_option(self::OPT, []), [ |
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'enabled' => false, |
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'emails' => get_option('admin_email', ''), |
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'eol_warning' => true, |
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'config_change' => true, |
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'opcache_low' => false, |
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'opcache_thresh' => 80, |
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'weekly_digest' => false, |
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'ssl_expiry' => true, |
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'ssl_thresh' => 30, |
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'webhook_url' => '', |
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'webhook_type' => 'slack', |
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]); |
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} |
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|
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public static function save_settings(array $s): void { |
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$is_unlim = Phpinfo_WP_License::is_unlimited(); |
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$url = $is_unlim ? esc_url_raw(trim($s['webhook_url'] ?? '')) : ''; |
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$type = ($is_unlim && in_array($s['webhook_type'] ?? '', ['slack', 'discord', 'generic'], true)) ? $s['webhook_type'] : 'slack'; |
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update_option(self::OPT, [ |
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'enabled' => !empty($s['enabled']), |
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'emails' => sanitize_textarea_field($s['emails'] ?? ''), |
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'eol_warning' => !empty($s['eol_warning']), |
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'config_change' => !empty($s['config_change']), |
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'opcache_low' => !empty($s['opcache_low']), |
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'opcache_thresh' => max(0, min(100, (int)($s['opcache_thresh'] ?? 80))), |
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'weekly_digest' => $is_unlim && !empty($s['weekly_digest']), |
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'ssl_expiry' => !empty($s['ssl_expiry']), |
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'ssl_thresh' => max(1, (int)($s['ssl_thresh'] ?? 30)), |
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'webhook_url' => (strpos($url, 'https://') === 0) ? $url : '', |
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'webhook_type' => $type, |
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], false); |
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} |
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|
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private static function recipients(): array { |
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$s = self::get_settings(); |
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$raw = $s['emails'] ?? ''; |
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$list = array_filter(array_map('trim', preg_split('/[\r\n,;]+/', $raw))); |
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return array_values(array_filter($list, 'is_email')); |
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} |
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|
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private static function send(string $subject, string $body): bool { |
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$sent = false; |
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|
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$to = self::recipients(); |
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if ($to) { |
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$site = get_bloginfo('name') . ' (' . get_site_url() . ')'; |
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$full = "Alert from phpinfo() WP Pro\nSite: {$site}\n\n{$body}\n\n---\n" |
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. "Manage alerts: " . admin_url('admin.php?page=phpinfowp-alerts'); |
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$headers = [ |
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'Content-Type: text/plain; charset=UTF-8', |
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'From: phpinfo() WP <' . get_option('admin_email') . '>', |
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]; |
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$sent = wp_mail($to, "[phpinfo() WP] {$subject}", $full, $headers); |
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} |
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|
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self::send_webhook($subject, $body); |
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return $sent; |
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} |
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|
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public static function send_webhook(string $subject, string $body): bool { |
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$s = self::get_settings(); |
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$url = $s['webhook_url'] ?? ''; |
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if (!$url) return false; |
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|
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$site = get_bloginfo('name') . ' (' . get_site_url() . ')'; |
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$text = "*[phpinfo() WP] {$subject}*\nSite: {$site}\n\n{$body}"; |
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|
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switch ($s['webhook_type']) { |
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case 'discord': |
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$payload = ['content' => substr($text, 0, 1900)]; |
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break; |
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case 'slack': |
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$payload = ['text' => $text]; |
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break; |
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default: |
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$payload = ['site' => $site, 'subject' => $subject, 'body' => $body, 'at' => time()]; |
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break; |
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} |
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|
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$resp = wp_remote_post($url, [ |
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'timeout' => 10, |
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'headers' => ['Content-Type' => 'application/json'], |
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'body' => wp_json_encode($payload), |
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]); |
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if (is_wp_error($resp)) return false; |
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$code = wp_remote_retrieve_response_code($resp); |
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return $code >= 200 && $code < 300; |
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} |
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|
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public static function maybe_send_eol(): void { |
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if (!self::_pro()) return; |
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$s = self::get_settings(); |
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if (!$s['enabled'] || !$s['eol_warning']) return; |
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|
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$status = Phpinfo_WP_EOL::status(); |
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if (!in_array($status['status'], ['warning', 'eol'], true)) return; |
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|
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// Throttle: don't send more than once per 7 days |
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if (get_transient('phpinfowp_alert_eol_sent')) return; |
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set_transient('phpinfowp_alert_eol_sent', 1, 7 * DAY_IN_SECONDS); |
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|
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$minor = $status['minor']; |
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$eol = $status['eol']; |
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$days = $status['days']; |
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|
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if ($status['status'] === 'eol') { |
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$subject = "ACTION REQUIRED: PHP {$minor} is past end-of-life"; |
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$body = "PHP {$minor} reached end-of-life on {$eol}.\n" |
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. "No security updates are being issued for this version.\n" |
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. "Upgrade to PHP 8.2 or newer immediately."; |
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} else { |
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$subject = "Warning: PHP {$minor} reaches end-of-life in {$days} days"; |
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$body = "PHP {$minor} will reach end-of-life on {$eol} ({$days} days from now).\n" |
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. "Plan your PHP upgrade before that date to avoid running unsupported software."; |
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} |
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|
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self::send($subject, $body); |
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} |
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|
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public static function maybe_send_config_change(array $diff): void { |
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if (!self::_pro()) return; |
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$s = self::get_settings(); |
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if (!$s['enabled'] || !$s['config_change'] || !$diff) return; |
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|
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$lines = ["The following PHP configuration changes were detected:\n"]; |
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foreach ($diff as $item) { |
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$key = $item['key']; |
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if ($item['type'] === 'changed') { |
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$lines[] = " CHANGED {$key}: \"{$item['old']}\" → \"{$item['new']}\""; |
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} elseif ($item['type'] === 'added') { |
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$lines[] = " ADDED {$key}: \"{$item['new']}\""; |
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} else { |
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$lines[] = " REMOVED {$key} (was \"{$item['old']}\")"; |
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} |
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} |
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|
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$count = count($diff); |
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$subject = "{$count} PHP config change" . ($count > 1 ? 's' : '') . " detected"; |
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self::send($subject, implode("\n", $lines)); |
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} |
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|
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public static function maybe_send_opcache_low(): void { |
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if (!self::_pro()) return; |
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$s = self::get_settings(); |
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if (!$s['enabled'] || !$s['opcache_low']) return; |
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|
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$status = Phpinfo_WP_OPcache::status(); |
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if (!$status || $status['hit_rate'] === null) return; |
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if ($status['hit_rate'] >= (float) $s['opcache_thresh']) return; |
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|
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if (get_transient('phpinfowp_alert_opcache_sent')) return; |
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set_transient('phpinfowp_alert_opcache_sent', 1, DAY_IN_SECONDS); |
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|
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$rate = $status['hit_rate']; |
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$thresh = $s['opcache_thresh']; |
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$subject = "OPcache hit rate is low: {$rate}% (threshold: {$thresh}%)"; |
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$body = "OPcache hit rate has dropped to {$rate}%, below your threshold of {$thresh}%.\n" |
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. "This may indicate OPcache memory is too small or is restarting frequently.\n" |
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. "Current OPcache memory used: " . Phpinfo_WP_OPcache::format_bytes($status['memory_used']) . " / " |
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. Phpinfo_WP_OPcache::format_bytes($status['memory_total']); |
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|
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self::send($subject, $body); |
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} |
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|
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public static function maybe_send_ssl(): void { |
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if (!self::_pro()) return; |
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$s = self::get_settings(); |
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if (!$s['enabled'] || !$s['ssl_expiry']) return; |
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if (get_transient('phpinfowp_alert_ssl_sent')) return; |
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|
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$results = Phpinfo_WP_SSL::check_all(); |
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$problems = array_filter($results, function ($r) use ($s) { |
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return empty($r['error']) |
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&& isset($r['days']) |
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&& $r['days'] <= (int)$s['ssl_thresh']; |
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}); |
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|
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if (!$problems) return; |
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set_transient('phpinfowp_alert_ssl_sent', 1, DAY_IN_SECONDS); |
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|
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$lines = []; |
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foreach ($problems as $cert) { |
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$lines[] = $cert['days'] < 0 |
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? " EXPIRED {$cert['host']} (expired {$cert['expiry']})" |
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: " EXPIRING {$cert['host']} — {$cert['days']} days left (expires {$cert['expiry']})"; |
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} |
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|
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$count = count($problems); |
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$subject = "SSL certificate" . ($count > 1 ? 's' : '') . " expiring soon"; |
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self::send($subject, implode("\n", $lines)); |
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} |
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|
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public static function send_weekly_digest(): void { |
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if (!self::_pro()) return; |
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if (!Phpinfo_WP_License::is_unlimited()) return; |
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$s = self::get_settings(); |
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if (!$s['enabled'] || !$s['weekly_digest']) return; |
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|
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$site = get_bloginfo('name') . ' (' . get_site_url() . ')'; |
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$eol = Phpinfo_WP_EOL::status(); |
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$grader = Phpinfo_WP_Config_Grader::run(); |
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$mem_used = size_format(memory_get_usage(true)); |
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$mem_limit = ini_get('memory_limit'); |
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|
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$lines = []; |
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$lines[] = "Weekly server health digest for: {$site}"; |
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$lines[] = str_repeat('─', 60); |
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$lines[] = ''; |
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|
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// PHP |
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$lines[] = "PHP VERSION"; |
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$lines[] = " PHP " . PHP_VERSION; |
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if ($eol['status'] === 'eol') { |
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$lines[] = " ⚠ End of life — upgrade immediately"; |
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} elseif ($eol['status'] === 'warning') { |
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$lines[] = " ⚠ EOL in {$eol['days']} days ({$eol['eol']})"; |
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} else { |
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$lines[] = " ✓ Supported until {$eol['eol']}"; |
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} |
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|
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// Memory |
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$lines[] = ''; |
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$lines[] = "MEMORY"; |
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$lines[] = " Used: {$mem_used} / Limit: {$mem_limit}"; |
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|
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// Config grade |
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$lines[] = ''; |
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$lines[] = "CONFIG GRADE"; |
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$lines[] = " Score: {$grader['score']}/100 (Grade: {$grader['grade']})"; |
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$failing = array_filter($grader['checks'], function ($c) { |
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return $c['status'] === 'fail'; |
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}); |
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foreach (array_slice($failing, 0, 5) as $f) { |
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$lines[] = " ✗ {$f['key']}: currently {$f['value']} (recommended: {$f['good']})"; |
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} |
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|
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// OPcache |
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$oc = Phpinfo_WP_OPcache::status(); |
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if ($oc && $oc['enabled']) { |
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$lines[] = ''; |
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$lines[] = "OPCACHE"; |
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$lines[] = " Hit rate: " . ($oc['hit_rate'] ?? 'N/A') . "%"; |
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$lines[] = " Memory: " . Phpinfo_WP_OPcache::format_bytes($oc['memory_used']) |
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. " / " . Phpinfo_WP_OPcache::format_bytes($oc['memory_total']); |
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} |
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|
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// SSL |
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$ssl_results = Phpinfo_WP_SSL::check_all(); |
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if ($ssl_results) { |
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$lines[] = ''; |
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$lines[] = "SSL CERTIFICATES"; |
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foreach ($ssl_results as $cert) { |
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if (!empty($cert['error'])) { |
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$lines[] = " ✗ {$cert['host']}: {$cert['error']}"; |
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} elseif ($cert['days'] < 0) { |
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$lines[] = " ✗ {$cert['host']}: EXPIRED {$cert['expiry']}"; |
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} else { |
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$icon = $cert['days'] < 30 ? '⚠' : '✓'; |
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$lines[] = " {$icon} {$cert['host']}: {$cert['days']} days left (expires {$cert['expiry']})"; |
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} |
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} |
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} |
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|
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// Snapshots — any changes this week |
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$latest = Phpinfo_WP_Snapshots::get_latest(); |
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$prev = $latest ? Phpinfo_WP_Snapshots::get_previous_to($latest->id) : null; |
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if ($latest && $prev) { |
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$diff = Phpinfo_WP_Snapshots::diff($prev->snapshot_data, $latest->snapshot_data); |
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if ($diff) { |
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$lines[] = ''; |
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$lines[] = "CONFIG CHANGES SINCE LAST SNAPSHOT"; |
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foreach (array_slice($diff, 0, 10) as $item) { |
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$lines[] = " " . strtoupper($item['type']) . " {$item['key']}: " |
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. ($item['old'] ?? '—') . " → " . ($item['new'] ?? '—'); |
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} |
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} |
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} |
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|
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$lines[] = ''; |
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$lines[] = str_repeat('─', 60); |
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$lines[] = "View full dashboard: " . admin_url('admin.php?page=phpinfo-wp'); |
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|
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self::send("Weekly health digest — " . get_bloginfo('name'), implode("\n", $lines)); |
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} |
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|
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// Weekly cron — runs all alert checks + auto-snapshot |
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public static function cron_weekly(): void { |
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if (!self::_pro()) return; |
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$diff = Phpinfo_WP_Snapshots::auto_snapshot(); |
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self::maybe_send_config_change($diff); |
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Phpinfo_WP_Snapshots::prune(30); |
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|
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self::maybe_send_eol(); |
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self::maybe_send_opcache_low(); |
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self::maybe_send_ssl(); |
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self::send_weekly_digest(); |
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} |
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} |
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|
