import { getToken } from "next-auth/jwt";
import { NextResponse, type NextRequest } from "next/server";
import {
getAuthMode,
getRequiredAuthSecret,
isAuthRoute,
isProtectedPath,
type AuthEnv,
} from "@/lib/auth-config";
export async function proxy(request: NextRequest) {
const { pathname } = request.nextUrl;
if (!isProtectedPath(pathname)) return NextResponse.next();
const authMode = getAuthMode();
if (!authMode.enabled && !authMode.error) return NextResponse.next();
if (authMode.error) {
return authConfigErrorResponse(request, authMode.error);
}
const token = await getToken({
req: request,
secret: getRequiredAuthSecret(),
});
if (token) return NextResponse.next();
if (pathname.startsWith("/api/")) {
return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
}
const callbackUrl = buildPublicRequestUrl(request);
const signInUrl = new URL("/api/auth/signin/oidc", callbackUrl);
signInUrl.searchParams.set("callbackUrl", callbackUrl.href);
return NextResponse.redirect(signInUrl);
}
export const config = {
matcher: ["/((?!_next/static|_next/image|favicon.ico|icon.svg).*)"],
};
function authConfigErrorResponse(request: NextRequest, error: string) {
if (request.nextUrl.pathname.startsWith("/api/") && !isAuthRoute(request.nextUrl.pathname)) {
return NextResponse.json({ error }, { status: 500 });
}
return new NextResponse(authErrorHtml(error), {
status: 500,
headers: {
"content-type": "text/html; charset=utf-8",
},
});
}
export function buildPublicRequestUrl(request: NextRequest, env: AuthEnv = process.env): URL {
const origin = getPublicOrigin(request, env);
return new URL(`${request.nextUrl.pathname}${request.nextUrl.search}`, origin);
}
function getPublicOrigin(request: NextRequest, env: AuthEnv): string {
const configuredOrigin = getConfiguredOrigin(env.NEXTAUTH_URL);
if (configuredOrigin) return configuredOrigin;
const forwardedHost = firstHeaderValue(request.headers.get("x-forwarded-host"));
const host = forwardedHost || firstHeaderValue(request.headers.get("host")) || request.nextUrl.host;
const forwardedProto = firstHeaderValue(request.headers.get("x-forwarded-proto"));
const proto = forwardedProto || request.nextUrl.protocol.replace(":", "") || "http";
return `${proto}://${host}`;
}
function getConfiguredOrigin(value: string | undefined): string | null {
if (!value?.trim()) return null;
try {
return new URL(value).origin;
} catch {
return null;
}
}
function firstHeaderValue(value: string | null): string {
return value?.split(",")[0]?.trim() ?? "";
}
function authErrorHtml(error: string): string {
return `
Authentication Configuration Error
OIDC 配置不完整
${escapeHtml(error)}
请补全 OIDC 配置，或移除全部 OIDC 相关变量以保持开放访问。
`;
}
function escapeHtml(value: string): string {
return value
.replaceAll("&", "&")
.replaceAll("<", "<")
.replaceAll(">", ">")
.replaceAll('"', """)
.replaceAll("'", "'");
}