fix: parse Authelia logfmt format in security logs

dashboard/backend/routers/security.py

@@ -26,25 +26,47 @@ _INTERNAL_PATHS = re.compile(
 )
 
 
+_LOGFMT_RE = re.compile(r'(\w+)="([^"]*)"|\b(\w+)=(\S+)')
+
+
+def _parse_logfmt(line: str) -> dict:
+    """Parse a logfmt line into a dict."""
+    result = {}
+    for m in _LOGFMT_RE.finditer(line):
+        if m.group(1):
+            result[m.group(1)] = m.group(2)
+        elif m.group(3):
+            result[m.group(3)] = m.group(4)
+    return result
+
+
 def _parse_authelia_logs(lines: str, limit: int) -> list[dict]:
-    """Extract failed auth attempts from Authelia JSON logs."""
+    """Extract failed auth attempts from Authelia logs (logfmt or JSON)."""
     entries = []
     for line in lines.strip().splitlines():
-        # Authelia outputs JSON log lines
-        try:
-            obj = json.loads(line.strip())
-        except (json.JSONDecodeError, ValueError):
+        line = line.strip()
+        if not line:
             continue
 
+        # Try JSON first, fall back to logfmt
+        try:
+            obj = json.loads(line)
+        except (json.JSONDecodeError, ValueError):
+            obj = _parse_logfmt(line)
+            if not obj:
+                continue
+
         level = obj.get("level", "")
         msg = obj.get("msg", "")
 
-        # Failed auth: level=error or warning with auth-related messages
         is_failed = (
             level in ("error", "warning")
             and any(kw in msg.lower() for kw in ("unsuccessful", "banned", "failed", "invalid", "denied"))
         )
-        if not is_failed:
+        # Also catch "not authorized" for anonymous access attempts
+        is_unauthorized = "is not authorized" in msg.lower()
+
+        if not is_failed and not is_unauthorized:
             continue
 
         ts_raw = obj.get("time", "")
@@ -54,7 +76,7 @@ def _parse_authelia_logs(lines: str, limit: int) -> list[dict]:
             ts = ts_raw[:19] if ts_raw else ""
 
         entries.append({
-            "type": "auth_failure",
+            "type": "auth_failure" if is_failed else "unauthorized",
             "timestamp": ts,
             "message": msg,
             "username": obj.get("username", obj.get("user", "")),