fix: address issue lidge-jun#758

Fixes lidge-jun#758

Author: Wibias

src/lib/destination-policy.ts

@@ -130,13 +130,20 @@ function registryAllowsPrivateNetwork(name: string): boolean {
   return getProviderRegistryEntry(name)?.allowPrivateNetworkByDefault === true;
 }
 
+/** True when the provider config or registry default admits private/loopback destinations. */
+export function providerAllowsPrivateNetwork(
+  name: string,
+  provider: Pick<OcxProviderConfig, "allowPrivateNetwork">,
+): boolean {
+  return provider.allowPrivateNetwork === true || registryAllowsPrivateNetwork(name);
+}
+
 export function providerDestinationConfigError(name: string, provider: Pick<OcxProviderConfig, "baseUrl" | "allowPrivateNetwork">): string | null {
   const assessment = assessDestination(provider.baseUrl);
   if (!assessment) return null;
   if (assessment.kind === "public" || assessment.kind === "hostname") return null;
   if (assessment.kind === "metadata") return "baseUrl targets a blocked metadata endpoint";
-  if (registryAllowsPrivateNetwork(name)) return null;
-  if (provider.allowPrivateNetwork === true) return null;
+  if (providerAllowsPrivateNetwork(name, provider)) return null;
   return `baseUrl points to a ${assessment.detail}; set allowPrivateNetwork:true only for intentionally local/self-hosted providers`;
 }
 
@@ -174,7 +181,7 @@ export async function providerDestinationResolvedError(
   if (!hostname || isIP(hostname) !== 0 || hostname === "localhost" || hostname.endsWith(".localhost")) {
     return null; // literals and localhost are fully handled by the sync path
   }
-  if (registryAllowsPrivateNetwork(name) || provider.allowPrivateNetwork === true) return null;
+  if (providerAllowsPrivateNetwork(name, provider)) return null;
   let addresses: { address: string }[];
   try {
     addresses = await lookup(hostname, { all: true, verbatim: true });

src/lib/provider-outbound.ts

@@ -2,6 +2,7 @@ import type { OcxProviderConfig } from "../types";
 import {
   assessUrlDestination,
   DestinationDnsResolutionError,
+  providerAllowsPrivateNetwork,
   providerDestinationConfigError,
   resolvePublicAddresses,
 } from "./destination-policy";
@@ -116,7 +117,8 @@ export async function providerOutboundGet(
     if (assessment?.kind === "metadata" || assessment?.kind === "link-local" || assessment?.kind === "unspecified") {
       throw new ProviderOutboundPolicyError(`provider URL targets ${assessment.detail}`);
     }
-    if (!provider.allowPrivateNetwork) {
+    const allowPrivate = providerAllowsPrivateNetwork(name, provider);
+    if (!allowPrivate) {
       const destinationError = providerDestinationConfigError(name, {
         baseUrl: url,
         allowPrivateNetwork: false,
@@ -129,11 +131,12 @@ export async function providerOutboundGet(
   const proxyConfigured = configuredProxyFor();
   const resolveAddresses = dependencies.resolveAddresses ?? resolvePublicAddresses;
   const pinnedGet = dependencies.pinnedGet ?? pinnedHttpGet;
+  const allowPrivate = providerAllowsPrivateNetwork(name, provider);
   let resolved: Awaited<ReturnType<typeof resolvePublicAddresses>>;
   try {
     resolved = await resolveAddresses(url, {
       context: "provider URL",
-      allowPrivateNetwork: provider.allowPrivateNetwork,
+      allowPrivateNetwork: allowPrivate,
     });
   } catch (error) {
     const dnsResolutionFailed = error instanceof DestinationDnsResolutionError

tests/provider-outbound.test.ts

@@ -90,6 +90,36 @@ describe("provider outbound GET transport", () => {
     expect(captured.address).toBeUndefined();
   });
 
+  test("built-in ollama admits loopback discovery without an explicit allowPrivateNetwork flag (#758)", async () => {
+    for (const key of proxyKeys) delete process.env[key];
+    const { providerOutboundGet } = await import("../src/lib/provider-outbound");
+    let sawAllowPrivate: boolean | undefined;
+    const dependencies: ProviderOutboundDependencies = {
+      resolveAddresses: mock(async (_url, options) => {
+        sawAllowPrivate = typeof options === "object" && options?.allowPrivateNetwork === true;
+        return {
+          hostname: "127.0.0.1",
+          addresses: [{ address: "127.0.0.1", family: 4 }],
+          privateNetwork: true,
+        };
+      }),
+      pinnedGet: mock(async () => new Response('{"data":[{"id":"llama"}]}', {
+        status: 200,
+        headers: { "content-type": "application/json" },
+      })),
+    };
+
+    const response = await providerOutboundGet(
+      "ollama",
+      { baseUrl: "http://127.0.0.1:11434/v1" },
+      "http://127.0.0.1:11434/v1/models",
+      {},
+      dependencies,
+    );
+    expect(sawAllowPrivate).toBe(true);
+    expect(await response.json()).toEqual({ data: [{ id: "llama" }] });
+  });
+
   test("direct redirects return the same credential-safe final-URL guidance", async () => {
     for (const key of proxyKeys) delete process.env[key];
     const redirectTarget = new URL("https://final.example/v1/models?token=secret#fragment");