시놀로지 원격 로그 뷰어 추가

public/api.php

@@ -121,6 +121,58 @@ function dmesg_log(): array
     ];
 }
 
+function text_log_tail(string $path, string $label, int $limit = 500): array
+{
+    $limit = max(1, min(1000, $limit));
+    $stat = sh(['/usr/bin/stat', '-c', '%s|%Y', $path], true, 3);
+    if ((int)$stat['code'] !== 0) {
+        return [
+            'path' => $path,
+            'available' => false,
+            'lines' => [],
+            'line_count' => 0,
+            'size_bytes' => 0,
+            'updated_at' => null,
+            'message' => $label . ' log is not available yet.',
+        ];
+    }
+
+    $parts = explode('|', trim((string)$stat['out']), 2);
+    $size = (int)($parts[0] ?? 0);
+    $mtime = (int)($parts[1] ?? 0);
+    $tail = sh(['/usr/bin/tail', '-n', (string)$limit, $path], true, 4);
+    if ((int)$tail['code'] !== 0) {
+        return [
+            'path' => $path,
+            'available' => false,
+            'lines' => [],
+            'line_count' => 0,
+            'size_bytes' => $size,
+            'updated_at' => $mtime > 0 ? date('Y-m-d H:i:s', $mtime) : null,
+            'message' => 'failed to open ' . $label . ' log.',
+        ];
+    }
+
+    $lines = array_values(array_filter(
+        preg_split('/\R/', trim((string)$tail['out'])) ?: [],
+        static fn($line): bool => trim((string)$line) !== ''
+    ));
+
+    return [
+        'path' => $path,
+        'available' => true,
+        'lines' => array_reverse($lines),
+        'line_count' => count($lines),
+        'size_bytes' => $size,
+        'updated_at' => $mtime > 0 ? date('Y-m-d H:i:s', $mtime) : null,
+    ];
+}
+
+function synology_remote_log(): array
+{
+    return text_log_tail('/var/log/remote/synology/chaegeon.log', 'synology remote');
+}
+
 function command_first_line(array $cmd, bool $root = false, int $timeout = 3): string
 {
     $result = sh($cmd, $root, $timeout);
@@ -4288,6 +4340,13 @@ function control_api_dispatch(): void
             ]);
         }
 
+        if ($action === 'synology_log') {
+            json_out([
+                'ok' => true,
+                'data' => synology_remote_log(),
+            ]);
+        }
+
         if ($action === 'status') {
             json_out([
                 'ok' => true,