Basic password

src/__tests__/pages/api/auth/[...nextauth].test.js

@@ -38,14 +38,28 @@ describe("pages/api/auth/[...nextauth]", () => {
     expect(mod.default.options.secret).toBe("secret");
   });
 
-  it("throws when auth is enabled but required settings are missing", async () => {
+  it("throws when auth is enabled but no provider settings are present", async () => {
     process.env.HOMEPAGE_AUTH_ENABLED = "true";
 
     await expect(import("pages/api/auth/[...nextauth]")).rejects.toThrow(
-      /OIDC auth is enabled but required settings are missing/i,
+      /Password auth is enabled but required settings are missing/i,
     );
   });
 
+  it("builds a password provider when auth is enabled without OIDC config", async () => {
+    process.env.HOMEPAGE_AUTH_ENABLED = "true";
+    process.env.HOMEPAGE_AUTH_PASSWORD = "secret";
+    process.env.HOMEPAGE_AUTH_SECRET = "auth-secret";
+
+    const mod = await import("pages/api/auth/[...nextauth]");
+    const [provider] = mod.default.options.providers;
+
+    expect(provider.id).toBe("homepage-password");
+    expect(provider.name).toBe("Password");
+    expect(provider.type).toBe("credentials");
+    expect(typeof provider.authorize).toBe("function");
+  });
+
   it("builds an OIDC provider when enabled and maps profile fields", async () => {
     process.env.HOMEPAGE_AUTH_ENABLED = "true";
     process.env.HOMEPAGE_OIDC_ISSUER = "https://issuer.example/";
@@ -97,4 +111,14 @@ describe("pages/api/auth/[...nextauth]", () => {
       image: null,
     });
   });
+
+  it("throws when only partial OIDC settings are provided", async () => {
+    process.env.HOMEPAGE_AUTH_ENABLED = "true";
+    process.env.HOMEPAGE_OIDC_ISSUER = "https://issuer.example";
+    process.env.HOMEPAGE_AUTH_SECRET = "auth-secret";
+
+    await expect(import("pages/api/auth/[...nextauth]")).rejects.toThrow(
+      /OIDC auth is enabled but required settings are missing/i,
+    );
+  });
 });

src/pages/api/auth/[...nextauth].js

@@ -1,4 +1,6 @@
 import NextAuth from "next-auth";
+import CredentialsProvider from "next-auth/providers/credentials";
+import { timingSafeEqual } from "node:crypto";
 
 const authEnabled = Boolean(process.env.HOMEPAGE_AUTH_ENABLED);
 const issuer = process.env.HOMEPAGE_OIDC_ISSUER;
@@ -6,6 +8,7 @@ const clientId = process.env.HOMEPAGE_OIDC_CLIENT_ID;
 const clientSecret = process.env.HOMEPAGE_OIDC_CLIENT_SECRET;
 const homepageAuthSecret = process.env.HOMEPAGE_AUTH_SECRET;
 const homepageExternalUrl = process.env.HOMEPAGE_EXTERNAL_URL;
+const homepageAuthPassword = process.env.HOMEPAGE_AUTH_PASSWORD;
 
 // Map HOMEPAGE_* envs to what NextAuth expects
 if (!process.env.NEXTAUTH_SECRET && homepageAuthSecret) {
@@ -17,41 +20,75 @@ if (!process.env.NEXTAUTH_URL && homepageExternalUrl) {
 
 const defaultScope = process.env.HOMEPAGE_OIDC_SCOPE || "openid email profile";
 const cleanedIssuer = issuer ? issuer.replace(/\/+$/, "") : issuer;
+const hasOidcConfig = Boolean(issuer && clientId && clientSecret);
+const hasAnyOidcConfig = Boolean(issuer || clientId || clientSecret);
 
-if (
-  authEnabled &&
-  (!issuer || !clientId || !clientSecret || !process.env.NEXTAUTH_SECRET || !process.env.NEXTAUTH_URL)
-) {
-  throw new Error("OIDC auth is enabled but required settings are missing.");
+if (authEnabled) {
+  if (hasOidcConfig) {
+    if (!process.env.NEXTAUTH_SECRET || !process.env.NEXTAUTH_URL) {
+      throw new Error("OIDC auth is enabled but required settings are missing.");
+    }
+  } else if (hasAnyOidcConfig) {
+    throw new Error("OIDC auth is enabled but required settings are missing.");
+  } else if (!homepageAuthPassword || !process.env.NEXTAUTH_SECRET) {
+    throw new Error("Password auth is enabled but required settings are missing.");
+  }
 }
 
 let providers = [];
 if (authEnabled) {
-  providers = [
-    {
-      id: "homepage-oidc",
-      name: process.env.HOMEPAGE_OIDC_NAME || "Homepage OIDC",
-      type: "oauth",
-      idToken: true,
-      issuer: cleanedIssuer,
-      wellKnown: `${cleanedIssuer}/.well-known/openid-configuration`,
-      clientId,
-      clientSecret,
-      authorization: {
-        params: {
-          scope: defaultScope,
+  if (hasOidcConfig) {
+    providers = [
+      {
+        id: "homepage-oidc",
+        name: process.env.HOMEPAGE_OIDC_NAME || "Homepage OIDC",
+        type: "oauth",
+        idToken: true,
+        issuer: cleanedIssuer,
+        wellKnown: `${cleanedIssuer}/.well-known/openid-configuration`,
+        clientId,
+        clientSecret,
+        authorization: {
+          params: {
+            scope: defaultScope,
+          },
+        },
+        profile(profile) {
+          return {
+            id: profile.sub ?? profile.id ?? profile.user_id ?? profile.uid ?? profile.email,
+            name: profile.name ?? profile.preferred_username ?? profile.nickname ?? profile.email,
+            email: profile.email ?? null,
+            image: profile.picture ?? null,
+          };
         },
       },
-      profile(profile) {
-        return {
-          id: profile.sub ?? profile.id ?? profile.user_id ?? profile.uid ?? profile.email,
-          name: profile.name ?? profile.preferred_username ?? profile.nickname ?? profile.email,
-          email: profile.email ?? null,
-          image: profile.picture ?? null,
-        };
-      },
-    },
-  ];
+    ];
+  } else {
+    providers = [
+      CredentialsProvider({
+        id: "homepage-password",
+        name: "Password",
+        credentials: {
+          password: { label: "Password", type: "password" },
+        },
+        async authorize(credentials) {
+          const provided = credentials?.password ?? "";
+          const expected = homepageAuthPassword ?? "";
+          if (!expected || provided.length !== expected.length) {
+            return null;
+          }
+          const isMatch = timingSafeEqual(Buffer.from(provided), Buffer.from(expected));
+          if (!isMatch) {
+            return null;
+          }
+          return {
+            id: "homepage",
+            name: "Homepage",
+          };
+        },
+      }),
+    ];
+  }
 }
 
 export default NextAuth({

src/pages/auth/signin.jsx

@@ -1,14 +1,22 @@
 import classNames from "classnames";
-import { getProviders } from "next-auth/react";
-import { useEffect } from "react";
+import { getProviders, signIn } from "next-auth/react";
+import { useRouter } from "next/router";
+import { useEffect, useMemo, useState } from "react";
 import { BiShieldQuarter } from "react-icons/bi";
 
 import { getSettings } from "utils/config/config";
 
 export default function SignIn({ providers, settings }) {
+  const router = useRouter();
+  const [password, setPassword] = useState("");
   const theme = settings?.theme || "dark";
   const color = settings?.color || "slate";
   const title = settings?.title || "Homepage";
+  const callbackUrl = useMemo(() => {
+    const value = router.query?.callbackUrl;
+    return typeof value === "string" ? value : "/";
+  }, [router.query?.callbackUrl]);
+  const error = router.query?.error;
 
   let backgroundImage = "";
   let opacity = settings?.backgroundOpacity ?? 0;
@@ -94,6 +102,8 @@ export default function SignIn({ providers, settings }) {
     );
   }
 
+  const hasPasswordProvider = Boolean(providers?.["homepage-password"]);
+
   return (
     <>
       {backgroundImage && (
@@ -132,16 +142,53 @@ export default function SignIn({ providers, settings }) {
               <div className="rounded-2xl border border-white/60 bg-white/70 p-6 shadow-lg shadow-black/5 dark:border-white/10 dark:bg-slate-900/70">
                 <h2 className="text-lg font-semibold text-gray-900 dark:text-slate-100">Sign in</h2>
                 <div className="mt-6 space-y-3">
-                  {Object.values(providers).map((provider) => (
-                    <button
-                      key={provider.id}
-                      type="button"
-                      className="group w-full rounded-xl bg-theme-600 px-4 py-3 text-sm font-semibold text-white shadow-lg shadow-theme-600/20 transition hover:-translate-y-0.5 hover:bg-theme-500 focus-visible:outline focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-theme-500"
+                  {hasPasswordProvider && (
+                    <form
+                      className="space-y-3"
+                      onSubmit={async (event) => {
+                        event.preventDefault();
+                        await signIn("homepage-password", {
+                          redirect: true,
+                          callbackUrl,
+                          password,
+                        });
+                      }}
                     >
-                      <span className="flex items-center justify-center gap-2">Login via {provider.name} &rarr;</span>
-                    </button>
-                  ))}
+                      <label className="block text-sm font-medium text-gray-700 dark:text-slate-300">Password</label>
+                      <input
+                        type="password"
+                        name="password"
+                        value={password}
+                        onChange={(event) => setPassword(event.target.value)}
+                        autoComplete="current-password"
+                        className="w-full rounded-xl border border-slate-200 bg-white/90 px-4 py-3 text-sm text-gray-900 shadow-sm outline-none ring-0 transition focus:border-theme-500 focus:ring-2 focus:ring-theme-500/30 dark:border-slate-700 dark:bg-slate-900/60 dark:text-slate-100"
+                        required
+                      />
+                      <button
+                        type="submit"
+                        className="group w-full rounded-xl bg-theme-600 px-4 py-3 text-sm font-semibold text-white shadow-lg shadow-theme-600/20 transition hover:-translate-y-0.5 hover:bg-theme-500 focus-visible:outline focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-theme-500"
+                      >
+                        <span className="flex items-center justify-center gap-2">Sign in &rarr;</span>
+                      </button>
+                    </form>
+                  )}
+                  {!hasPasswordProvider &&
+                    Object.values(providers).map((provider) => (
+                      <button
+                        key={provider.id}
+                        type="button"
+                        onClick={() => signIn(provider.id, { callbackUrl })}
+                        className="group w-full rounded-xl bg-theme-600 px-4 py-3 text-sm font-semibold text-white shadow-lg shadow-theme-600/20 transition hover:-translate-y-0.5 hover:bg-theme-500 focus-visible:outline focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-theme-500"
+                      >
+                        <span className="flex items-center justify-center gap-2">Login via {provider.name} &rarr;</span>
+                      </button>
+                    ))}
                 </div>
+                {hasPasswordProvider && error && (
+                  <p className="mt-4 rounded-xl border border-red-200 bg-red-50 px-3 py-2 text-xs text-red-700 dark:border-red-800/60 dark:bg-red-950/40 dark:text-red-200">
+                    Invalid password. Please try again.
+                  </p>
+                )}
               </div>
             </section>
           </div>