fix: request HTTPS tiles for ion-backed Bing imagery

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+- Bing Aerial and Bing Labels request HTTPS tiles on HTTP localhost through
+  their ion-backed providers, retaining ion and per-tile attribution without
+  widening the Content Security Policy.
+
 - Treat explicitly current, complete empty vessel coverage as a successful update,
   clearing obsolete contacts while retaining stale or incomplete snapshots.
 

docs/CURRENT-STATE.md

@@ -5018,6 +5018,12 @@ photoreal globe is hidden.
 
 Map credentials are passed to each source constructor rather than changing SDK-wide Google or ion defaults.
 
+Bing Aerial and Bing Labels resolve their ion imagery endpoint with the supplied
+token, then construct the Bing provider with `tileProtocol: 'https'`. Both styles
+request HTTPS tiles even on HTTP localhost, with the existing Content Security
+Policy unchanged. Ion attribution and Bing's per-tile credits are preserved;
+other ion imagery assets continue through the SDK's standard ion factory.
+
 The controller accepts other source registries without adding provider branches.
 Each instance caches source construction, ignores superseded scene changes and
 releases imagery layers/listeners on replacement. Destroy invalidates pending

src/maps/imagery.js

@@ -25,5 +25,42 @@ export function createEsriImagery() {
 export function createIonImagery(style, accessToken) {
   accessToken = String(accessToken || '').trim();
   if (!accessToken) throw new Error('Ion imagery requires an explicit token');
+  if (
+    style === Cesium.IonWorldImageryStyle.AERIAL ||
+    style === Cesium.IonWorldImageryStyle.AERIAL_WITH_LABELS
+  ) {
+    return createBingIonImagery(style, accessToken);
+  }
   return Cesium.IonImageryProvider.fromAssetId(style, { accessToken });
 }
+
+async function createBingIonImagery(style, accessToken) {
+  const endpoint = await new Cesium.Resource({
+    url: `https://api.cesium.com/v1/assets/${style}/endpoint`,
+    queryParameters: { access_token: accessToken },
+  }).fetchJson();
+  if (
+    endpoint?.type !== 'IMAGERY' ||
+    endpoint.externalType !== 'BING' ||
+    typeof endpoint.options?.url !== 'string'
+  ) {
+    throw new Error('Ion world imagery did not return a Bing imagery endpoint');
+  }
+  // Bing otherwise follows the page's HTTP scheme on localhost. Resolve its
+  // ion-issued credentials through public APIs so tiles use HTTPS without
+  // weakening CSP, changing SDK defaults or touching provider internals.
+  const { url, ...options } = endpoint.options;
+  const provider = await Cesium.BingMapsImageryProvider.fromUrl(url, {
+    ...options,
+    tileProtocol: 'https',
+  });
+  const ionCredits = (endpoint.attributions ?? []).map(
+    ({ html, collapsible }) => new Cesium.Credit(html, collapsible === false),
+  );
+  const getTileCredits = provider.getTileCredits.bind(provider);
+  provider.getTileCredits = (x, y, level) => [
+    ...ionCredits,
+    ...(getTileCredits(x, y, level) ?? []),
+  ];
+  return provider;
+}

src/maps/sourceFactories.test.mjs

@@ -89,7 +89,7 @@ test('imagery and terrain pass their own ion token without relying on SDK defaul
       calls.push({ kind: 'terrain', resource, options });
       return { id: 'terrain' };
     };
-    await createIonImagery(Cesium.IonWorldImageryStyle.AERIAL, 'imagery-token');
+    await createIonImagery(12345, 'imagery-token');
     const result = await createWorldTerrain('terrain-token');
     assert.equal(calls[0].options.accessToken, 'imagery-token');
     assert.equal(calls[1].options.accessToken, 'terrain-token');
@@ -104,6 +104,162 @@ test('imagery and terrain pass their own ion token without relying on SDK defaul
   }
 });
 
+test('both Bing ion stacks use HTTPS and retain ion and per-tile attribution', async (t) => {
+  const defaultToken = Cesium.Ion.defaultAccessToken;
+  const metadataCalls = [];
+  const bingCalls = [];
+  const perTileCalls = [];
+  const bingCredit = new Cesium.Credit('Bing tile credit', true);
+  const endpoint = {
+    type: 'IMAGERY',
+    externalType: 'BING',
+    options: Object.freeze({
+      url: 'https://dev.virtualearth.net',
+      key: 'ion-issued-bing-fixture',
+      mapStyle: 'Aerial',
+      tileProtocol: 'http',
+    }),
+    attributions: [
+      { html: 'Ion required credit', collapsible: false },
+      { html: 'Ion optional credit', collapsible: true },
+    ],
+  };
+  t.mock.method(Cesium.Resource.prototype, 'fetchJson', async function () {
+    metadataCalls.push({
+      url: this.url,
+      token: this.queryParameters.access_token,
+    });
+    const mapStyle = this.url.includes(
+      `/assets/${Cesium.IonWorldImageryStyle.AERIAL_WITH_LABELS}/`,
+    )
+      ? 'AerialWithLabels'
+      : 'Aerial';
+    return {
+      ...endpoint,
+      options: Object.freeze({ ...endpoint.options, mapStyle }),
+    };
+  });
+  t.mock.method(Cesium.IonImageryProvider, 'fromAssetId', () =>
+    assert.fail('Bing must not inherit the local HTTP page protocol'),
+  );
+  t.mock.method(
+    Cesium.BingMapsImageryProvider,
+    'fromUrl',
+    async (url, options) => {
+      bingCalls.push({ url, options });
+      const provider = {
+        errorEvent: new Cesium.Event(),
+        getTileCredits(x, y, level) {
+          assert.equal(this, provider);
+          perTileCalls.push([x, y, level]);
+          return level === 0 ? undefined : [bingCredit];
+        },
+      };
+      return provider;
+    },
+  );
+  for (const style of [
+    Cesium.IonWorldImageryStyle.AERIAL,
+    Cesium.IonWorldImageryStyle.AERIAL_WITH_LABELS,
+  ]) {
+    const provider = await createIonImagery(style, ' own-ion-token ');
+    const credits = provider.getTileCredits(3, 4, 5);
+    assert.deepEqual(
+      credits.map(({ html, showOnScreen }) => ({ html, showOnScreen })),
+      [
+        { html: 'Ion required credit', showOnScreen: true },
+        { html: 'Ion optional credit', showOnScreen: false },
+        { html: 'Bing tile credit', showOnScreen: true },
+      ],
+    );
+    assert.equal(credits[2], bingCredit);
+    assert.equal(provider.getTileCredits(0, 0, 0).length, 2);
+    assert.ok(provider.errorEvent instanceof Cesium.Event);
+    assert.equal(metadataCalls.at(-1).token, 'own-ion-token');
+    const requested = new URL(metadataCalls.at(-1).url);
+    assert.equal(requested.origin, 'https://api.cesium.com');
+    assert.equal(requested.pathname, `/v1/assets/${style}/endpoint`);
+  }
+  assert.deepEqual(perTileCalls, [
+    [3, 4, 5],
+    [0, 0, 0],
+    [3, 4, 5],
+    [0, 0, 0],
+  ]);
+  assert.equal(bingCalls.length, 2);
+  for (const [index, { url, options }] of bingCalls.entries()) {
+    assert.equal(url, 'https://dev.virtualearth.net');
+    assert.deepEqual(options, {
+      key: 'ion-issued-bing-fixture',
+      mapStyle: index === 0 ? 'Aerial' : 'AerialWithLabels',
+      tileProtocol: 'https',
+    });
+  }
+  assert.equal(endpoint.options.tileProtocol, 'http');
+  assert.equal(Cesium.Ion.defaultAccessToken, defaultToken);
+});
+
+test('Bing ion metadata and construction failures propagate without another source', async (t) => {
+  const style = Cesium.IonWorldImageryStyle.AERIAL;
+  const metadataError = new Error('ion metadata fixture failure');
+  const providerError = new Error('Bing construction fixture failure');
+  let metadata = () => {
+    throw metadataError;
+  };
+  let bingCalls = 0;
+  t.mock.method(Cesium.Resource.prototype, 'fetchJson', async () => metadata());
+  t.mock.method(Cesium.BingMapsImageryProvider, 'fromUrl', async () => {
+    bingCalls += 1;
+    throw providerError;
+  });
+  t.mock.method(Cesium.IonImageryProvider, 'fromAssetId', () =>
+    assert.fail('Bing failures must not silently use an alternate provider'),
+  );
+  await assert.rejects(createIonImagery(style, 'test-token'), metadataError);
+  for (const endpoint of [
+    undefined,
+    {
+      type: 'TERRAIN',
+      externalType: 'BING',
+      options: { url: 'https://example.test' },
+    },
+    {
+      type: 'IMAGERY',
+      externalType: 'OTHER',
+      options: { url: 'https://example.test' },
+    },
+    { type: 'IMAGERY', externalType: 'BING', options: {} },
+  ]) {
+    metadata = () => endpoint;
+    await assert.rejects(
+      createIonImagery(style, 'test-token'),
+      /Bing imagery endpoint/,
+    );
+  }
+  assert.equal(bingCalls, 0);
+  metadata = () => ({
+    type: 'IMAGERY',
+    externalType: 'BING',
+    options: { url: 'https://dev.virtualearth.net', key: 'bing-fixture' },
+  });
+  await assert.rejects(createIonImagery(style, 'test-token'), providerError);
+  assert.equal(bingCalls, 1);
+});
+
+test('other ion imagery assets keep the standard SDK factory', async (t) => {
+  const expected = {};
+  const calls = [];
+  t.mock.method(Cesium.Resource.prototype, 'fetchJson', () =>
+    assert.fail('generic assets must use the SDK ion factory'),
+  );
+  t.mock.method(Cesium.IonImageryProvider, 'fromAssetId', async (...args) => {
+    calls.push(args);
+    return expected;
+  });
+  assert.equal(await createIonImagery(12345, ' custom-token '), expected);
+  assert.deepEqual(calls, [[12345, { accessToken: 'custom-token' }]]);
+});
+
 test('cancellation after ion metadata prevents terrain construction', async () => {
   const originalResource = Cesium.IonResource.fromAssetId;
   const originalTerrain = Cesium.CesiumTerrainProvider.fromUrl;