feat(auth): allow disabling password login when OIDC SSO is active

config/quality/eslint-suppressions.json

@@ -348,11 +348,6 @@
       "count": 1
     }
   },
-  "src/app/api/auth/login/route.ts": {
-    "no-restricted-imports": {
-      "count": 1
-    }
-  },
   "src/app/api/auth/oidc/callback/route.ts": {
     "no-restricted-imports": {
       "count": 1
@@ -813,14 +808,10 @@
       "count": 1
     }
   },
-  "src/app/api/settings/require-login/route.ts": {
-    "no-restricted-imports": {
-      "count": 1
-    }
-  },
+
   "src/app/api/settings/route.ts": {
     "no-restricted-imports": {
-      "count": 2
+      "count": 1
     }
   },
   "src/app/api/settings/system-prompt/route.ts": {
@@ -1616,11 +1607,7 @@
       "count": 11
     }
   },
-  "tests/unit/auth-login-route.test.ts": {
-    "@typescript-eslint/no-explicit-any": {
-      "count": 1
-    }
-  },
+
   "tests/unit/auth-ollama-cloud-per-model-403-3027.test.ts": {
     "@typescript-eslint/no-explicit-any": {
       "count": 11
@@ -2499,11 +2486,7 @@
       "count": 12
     }
   },
-  "tests/unit/login-bootstrap-route.test.ts": {
-    "@typescript-eslint/no-explicit-any": {
-      "count": 10
-    }
-  },
+
   "tests/unit/management-password.test.ts": {
     "@typescript-eslint/no-explicit-any": {
       "count": 4

src/app/api/auth/login/route.ts

@@ -1,14 +1,15 @@
 import { NextResponse } from "next/server";
 import { getAuditRequestContext, logAuditEvent } from "@/lib/compliance/index";
 import { classifyIpScope } from "@/lib/ipUtils";
-import { getCachedSettings } from "@/lib/localDb";
+import { getCachedSettings } from "@/lib/db/settings";
 import { SignJWT } from "jose";
 import { cookies } from "next/headers";
 import {
   ensurePersistentManagementPasswordHash,
   getStoredManagementPassword,
   verifyManagementPassword,
 } from "@/lib/auth/managementPassword";
+import { isFeatureFlagEnabled } from "@/shared/utils/featureFlags";
 import { loginSchema } from "@/shared/validation/schemas";
 import { isValidationFailure, validateBody } from "@/shared/validation/helpers";
 import { checkLoginGuard, clearLoginAttempts, recordLoginFailure } from "@/server/auth/loginGuard";
@@ -74,8 +75,32 @@ export async function POST(request) {
       return NextResponse.json({ error: "Invalid password payload" }, { status: 400 });
     }
     const settings = await getCachedSettings();
-    const bruteForceEnabled = settings.bruteForceProtection !== false;
     const clientIp = auditContext.ipAddress || null;
+    const oidcDisabledPassword =
+      settings.oidcEnabled === true &&
+      (settings.oidcDisablePasswordLogin === true ||
+        isFeatureFlagEnabled("OMNIROUTE_OIDC_DISABLE_PASSWORD_LOGIN") ||
+        process.env.OMNIROUTE_OIDC_DISABLE_PASSWORD_LOGIN === "true" ||
+        process.env.OIDC_DISABLE_PASSWORD_LOGIN === "true");
+
+    if (oidcDisabledPassword) {
+      logAuditEvent({
+        action: "auth.login.password_disabled_by_oidc",
+        actor: "anonymous",
+        target: "dashboard-auth",
+        resourceType: "auth_session",
+        status: "failed",
+        ipAddress: clientIp || undefined,
+        requestId: auditContext.requestId,
+        metadata: { reason: "password_login_disabled_when_oidc_active" },
+      });
+      return NextResponse.json(
+        { error: "Password login is disabled when OIDC is active. Please sign in with OIDC." },
+        { status: 403 }
+      );
+    }
+
+    const bruteForceEnabled = settings.bruteForceProtection !== false;
 
     const guardCheck = checkLoginGuard(clientIp, { enabled: bruteForceEnabled });
     if (!guardCheck.allowed) {

src/app/api/settings/require-login/route.ts

@@ -1,7 +1,8 @@
 import { NextResponse } from "next/server";
 import { cookies } from "next/headers";
 import { jwtVerify } from "jose";
-import { getSettings, updateSettings } from "@/lib/localDb";
+import { isFeatureFlagEnabled } from "@/shared/utils/featureFlags";
+import { getSettings, updateSettings } from "@/lib/db/settings";
 import {
   hasManagementPasswordConfigured,
   hashManagementPassword,
@@ -52,12 +53,19 @@ export async function GET() {
     const hasPassword = hasManagementPasswordConfigured(settings);
     const setupComplete = !!settings.setupComplete;
     const oidcEnabled = !!settings.oidcEnabled;
+    const oidcDisablePasswordLogin =
+      oidcEnabled &&
+      (settings.oidcDisablePasswordLogin === true ||
+        isFeatureFlagEnabled("OMNIROUTE_OIDC_DISABLE_PASSWORD_LOGIN") ||
+        process.env.OMNIROUTE_OIDC_DISABLE_PASSWORD_LOGIN === "true" ||
+        process.env.OIDC_DISABLE_PASSWORD_LOGIN === "true");
     return NextResponse.json({
       authenticated,
       requireLogin,
       hasPassword,
       setupComplete,
       oidcEnabled,
+      oidcDisablePasswordLogin,
       ...nodeInfo,
     });
   } catch (error) {
@@ -69,6 +77,7 @@ export async function GET() {
         hasPassword: true,
         setupComplete: true,
         oidcEnabled: false,
+        oidcDisablePasswordLogin: false,
         ...nodeInfo,
       },
       { status: 200 }

src/app/api/settings/route.ts

@@ -1,7 +1,11 @@
 import { NextResponse } from "next/server";
 import { z } from "zod";
-import { getSettings, getSettingsRevision, updateSettings } from "@/lib/localDb";
-import { SettingsRevisionConflictError } from "@/lib/db/settings";
+import {
+  getSettings,
+  getSettingsRevision,
+  updateSettings,
+  SettingsRevisionConflictError,
+} from "@/lib/db/settings";
 import { getRuntimePorts } from "@/lib/runtime/ports";
 import { updateSettingsSchema } from "@/shared/validation/settingsSchemas";
 import { isValidationFailure, validateBody } from "@/shared/validation/helpers";
@@ -118,6 +122,7 @@ const SECURITY_IMPACTING_KEYS = [
   "requireLogin",
   "newPassword",
   "oidcEnabled",
+  "oidcDisablePasswordLogin",
   "oidcClientSecret",
 ] as const;
 

src/app/login/page.tsx

@@ -11,9 +11,10 @@ export default function LoginPage() {
   const [password, setPassword] = useState("");
   const [error, setError] = useState("");
   const [loading, setLoading] = useState(false);
-  const [hasPassword, setHasPassword] = useState(null);
-  const [setupComplete, setSetupComplete] = useState(null);
+  const [hasPassword, setHasPassword] = useState<boolean | null>(null);
+  const [setupComplete, setSetupComplete] = useState<boolean | null>(null);
   const [oidcEnabled, setOidcEnabled] = useState<boolean | null>(null);
+  const [oidcDisablePasswordLogin, setOidcDisablePasswordLogin] = useState<boolean | null>(null);
   const [mounted, setMounted] = useState(false);
   const [nodeVersion, setNodeVersion] = useState(null);
   const [nodeCompatible, setNodeCompatible] = useState(true);
@@ -44,16 +45,19 @@ export default function LoginPage() {
           setHasPassword(!!data.hasPassword);
           setSetupComplete(!!data.setupComplete);
           setOidcEnabled(!!data.oidcEnabled);
+          setOidcDisablePasswordLogin(!!data.oidcDisablePasswordLogin);
         } else {
           setHasPassword(true);
           setSetupComplete(true);
           setOidcEnabled(false);
+          setOidcDisablePasswordLogin(false);
         }
       } catch (err) {
         clearTimeout(timeoutId);
         setHasPassword(true);
         setSetupComplete(true);
         setOidcEnabled(false);
+        setOidcDisablePasswordLogin(false);
       }
     }
     checkAuth();
@@ -122,7 +126,12 @@ export default function LoginPage() {
         </div>
       </div>
     ) : null;
-  if (hasPassword === null || setupComplete === null || oidcEnabled === null) {
+  if (
+    hasPassword === null ||
+    setupComplete === null ||
+    oidcEnabled === null ||
+    (oidcEnabled && oidcDisablePasswordLogin === null)
+  ) {
     return (
       <div className="min-h-screen flex flex-col items-center justify-center p-6">
         {nodeWarningBanner}
@@ -235,60 +244,84 @@ export default function LoginPage() {
                 </span>
               </div>
               <h1 className="text-2xl font-bold text-text-main tracking-tight">{t("signIn")}</h1>
-              <p className="text-text-muted mt-1.5">{t("enterPassword")}</p>
+              <p className="text-text-muted mt-1.5">
+                {oidcEnabled && oidcDisablePasswordLogin
+                  ? t("continueWithOidc")
+                  : t("enterPassword")}
+              </p>
             </div>
 
-            <form onSubmit={handleLogin} className="space-y-5">
-              <div className="space-y-2">
-                <label className="text-sm font-medium text-text-main">{t("password")}</label>
-                <Input
-                  type="password"
-                  placeholder={t("enterPassword")}
-                  value={password}
-                  onChange={(e) => setPassword(e.target.value)}
-                  required
-                  autoFocus
-                  className="h-11"
-                />
-                {error && (
-                  <p className="text-sm text-red-500 flex items-center gap-1.5 pt-1">
-                    <span className="material-symbols-outlined text-base">error</span>
-                    {error}
-                  </p>
-                )}
-                <p className="text-xs text-text-muted/60 pt-0.5">{t("defaultPasswordHint")}</p>
-              </div>
-
-              <Button
-                type="submit"
-                variant="primary"
-                className="w-full h-11 text-sm font-medium"
-                loading={loading}
-              >
-                {t("continue")}
-              </Button>
-            </form>
-            {oidcEnabled && (
-              <div className="mt-4">
+            {oidcEnabled && oidcDisablePasswordLogin ? (
+              <div className="space-y-4">
                 <Button
                   type="button"
-                  variant="secondary"
-                  className="w-full h-11 text-sm font-medium"
+                  variant="primary"
+                  className="w-full h-11 text-sm font-medium flex items-center justify-center gap-2"
                   onClick={() => (window.location.href = "/api/auth/oidc/login")}
                 >
+                  <span className="material-symbols-outlined text-lg">login</span>
                   {t("continueWithOidc")}
                 </Button>
               </div>
+            ) : (
+              <>
+                <form onSubmit={handleLogin} className="space-y-5 w-full">
+                  <div className="space-y-2">
+                    <label className="text-sm font-medium text-text-main">{t("password")}</label>
+                    <Input
+                      type="password"
+                      placeholder={t("enterPassword")}
+                      value={password}
+                      onChange={(e) => setPassword(e.target.value)}
+                      required
+                      autoFocus
+                      className="h-11"
+                    />
+                    {error && (
+                      <p className="text-sm text-red-500 flex items-center gap-1.5 pt-1">
+                        <span className="material-symbols-outlined text-base">error</span>
+                        {error}
+                      </p>
+                    )}
+                    <p className="text-xs text-text-muted/60 pt-0.5">{t("defaultPasswordHint")}</p>
+                  </div>
+
+                  <Button
+                    type="submit"
+                    variant="primary"
+                    className="w-full h-11 text-sm font-medium"
+                    loading={loading}
+                  >
+                    {t("continue")}
+                  </Button>
+                </form>
+
+                {oidcEnabled && (
+                  <div className="mt-4">
+                    <Button
+                      type="button"
+                      variant="secondary"
+                      className="w-full h-11 text-sm font-medium flex items-center justify-center gap-2"
+                      onClick={() => (window.location.href = "/api/auth/oidc/login")}
+                    >
+                      <span className="material-symbols-outlined text-lg">login</span>
+                      {t("continueWithOidc")}
+                    </Button>
+                  </div>
+                )}
+              </>
             )}
 
-            <div className="mt-6 pt-6 border-t border-border">
-              <a
-                href="/forgot-password"
-                className="text-sm text-text-muted hover:text-primary transition-colors"
-              >
-                {t("forgotPassword")}
-              </a>
-            </div>
+            {!oidcEnabled && (
+              <div className="mt-6 pt-6 border-t border-border">
+                <a
+                  href="/forgot-password"
+                  className="text-sm text-text-muted hover:text-primary transition-colors"
+                >
+                  {t("forgotPassword")}
+                </a>
+              </div>
+            )}
           </div>
         </div>
 

src/lib/db/settings.ts

@@ -162,6 +162,7 @@ export async function getSettings() {
     antigravitySignatureCacheMode: "enabled",
     requireLogin: true,
     oidcEnabled: false,
+    oidcDisablePasswordLogin: false,
     oidcIssuer: "",
     oidcClientId: "",
     oidcClientSecret: "",

src/shared/constants/featureFlagDefinitions.ts

@@ -109,16 +109,28 @@ export const FEATURE_FLAG_DEFINITIONS: FeatureFlagDefinition[] = [
     key: "AUTH_LOG_INCLUDE_ACCOUNT_ID",
     label: "Log Account IDs",
     description:
-      "Include the account ID prefix in AUTH log lines (e.g. \"Using <provider> account: abc12345...\"). " +
-      "Disabled by default so the account identifier is redacted in shared/multi-tenant process logs. " +
-      "Independent of Debug Mode — flipping Debug Mode on does not reveal this.",
+      'Include account prefix in AUTH log lines (e.g. "Using <provider> account: abc12345..."). ' +
+      "Disabled by default so account identifiers are redacted from shared/multi-tenant process logs. " +
+      "Independent from Debug Mode; flipping Debug Mode does not reveal this.",
     descriptionI18nKey: "featureFlagAuthLogIncludeAccountIdDescription",
     category: "security",
     defaultValue: "false",
     type: "boolean",
     requiresRestart: false,
     warningLevel: "info",
   },
+  {
+    key: "OMNIROUTE_OIDC_DISABLE_PASSWORD_LOGIN",
+    label: "Disable Password Login With OIDC",
+    description:
+      "When OIDC is enabled, disable password login so users can only authenticate via OIDC Single Sign-On. When disabled (default), both password login and OIDC are available.",
+    descriptionI18nKey: "featureFlagOidcDisablePasswordLoginDescription",
+    category: "security",
+    defaultValue: "false",
+    type: "boolean",
+    requiresRestart: false,
+    warningLevel: "info",
+  },
   // ──────────────── Network (7) ────────────────
   {
     key: "ENABLE_TLS_FINGERPRINT",

src/shared/validation/settingsSchemas.ts

@@ -108,6 +108,7 @@ export const updateSettingsSchema = z.object({
   language: z.string().max(10).optional(),
   requireLogin: z.boolean().optional(),
   oidcEnabled: z.boolean().optional(),
+  oidcDisablePasswordLogin: z.boolean().optional(),
   oidcIssuer: z.string().max(500).optional(),
   oidcClientId: z.string().max(200).optional(),
   oidcClientSecret: z.string().max(500).optional(),