1 files changed, 582 insertions, 0 deletions
diff --git a/testing/web-platform/tests/resources/chromium/webusb-test.js b/testing/web-platform/tests/resources/chromium/webusb-test.js
new file mode 100644
index 0000000000..94ff1bcadd
--- /dev/null
+++ b/testing/web-platform/tests/resources/chromium/webusb-test.js
@@ -0,0 +1,582 @@
+'use strict';
+
+// This polyfill library implements the WebUSB Test API as specified here:
+// https://wicg.github.io/webusb/test/
+
+(() => {
+
+// These variables are logically members of the USBTest class but are defined
+// here to hide them from being visible as fields of navigator.usb.test.
+let internal = {
+  intialized: false,
+
+  webUsbService: null,
+  webUsbServiceInterceptor: null,
+
+  messagePort: null,
+};
+
+let mojom = {};
+
+async function loadMojomDefinitions() {
+  const deviceMojom =
+      await import('/gen/services/device/public/mojom/usb_device.mojom.m.js');
+  const serviceMojom = await import(
+      '/gen/third_party/blink/public/mojom/usb/web_usb_service.mojom.m.js');
+  return {
+    ...deviceMojom,
+    ...serviceMojom,
+  };
+}
+
+function getMessagePort(target) {
+  return new Promise(resolve => {
+    target.addEventListener('message', messageEvent => {
+      if (messageEvent.data.type === 'ReadyForAttachment') {
+        if (internal.messagePort === null) {
+          internal.messagePort = messageEvent.data.port;
+        }
+        resolve();
+      }
+    }, {once: true});
+  });
+}
+
+// Converts an ECMAScript String object to an instance of
+// mojo_base.mojom.String16.
+function mojoString16ToString(string16) {
+  return String.fromCharCode.apply(null, string16.data);
+}
+
+// Converts an instance of mojo_base.mojom.String16 to an ECMAScript String.
+function stringToMojoString16(string) {
+  let array = new Array(string.length);
+  for (var i = 0; i < string.length; ++i) {
+    array[i] = string.charCodeAt(i);
+  }
+  return { data: array }
+}
+
+function fakeDeviceInitToDeviceInfo(guid, init) {
+  let deviceInfo = {
+    guid: guid + "",
+    usbVersionMajor: init.usbVersionMajor,
+    usbVersionMinor: init.usbVersionMinor,
+    usbVersionSubminor: init.usbVersionSubminor,
+    classCode: init.deviceClass,
+    subclassCode: init.deviceSubclass,
+    protocolCode: init.deviceProtocol,
+    vendorId: init.vendorId,
+    productId: init.productId,
+    deviceVersionMajor: init.deviceVersionMajor,
+    deviceVersionMinor: init.deviceVersionMinor,
+    deviceVersionSubminor: init.deviceVersionSubminor,
+    manufacturerName: stringToMojoString16(init.manufacturerName),
+    productName: stringToMojoString16(init.productName),
+    serialNumber: stringToMojoString16(init.serialNumber),
+    activeConfiguration: init.activeConfigurationValue,
+    configurations: []
+  };
+  init.configurations.forEach(config => {
+    var configInfo = {
+      configurationValue: config.configurationValue,
+      configurationName: stringToMojoString16(config.configurationName),
+      selfPowered: false,
+      remoteWakeup: false,
+      maximumPower: 0,
+      interfaces: [],
+      extraData: new Uint8Array()
+    };
+    config.interfaces.forEach(iface => {
+      var interfaceInfo = {
+        interfaceNumber: iface.interfaceNumber,
+        alternates: []
+      };
+      iface.alternates.forEach(alternate => {
+        var alternateInfo = {
+          alternateSetting: alternate.alternateSetting,
+          classCode: alternate.interfaceClass,
+          subclassCode: alternate.interfaceSubclass,
+          protocolCode: alternate.interfaceProtocol,
+          interfaceName: stringToMojoString16(alternate.interfaceName),
+          endpoints: [],
+          extraData: new Uint8Array()
+        };
+        alternate.endpoints.forEach(endpoint => {
+          var endpointInfo = {
+            endpointNumber: endpoint.endpointNumber,
+            packetSize: endpoint.packetSize,
+            synchronizationType: mojom.UsbSynchronizationType.NONE,
+            usageType: mojom.UsbUsageType.DATA,
+            pollingInterval: 0,
+            extraData: new Uint8Array()
+          };
+          switch (endpoint.direction) {
+            case "in":
+              endpointInfo.direction = mojom.UsbTransferDirection.INBOUND;
+              break;
+            case "out":
+              endpointInfo.direction = mojom.UsbTransferDirection.OUTBOUND;
+              break;
+          }
+          switch (endpoint.type) {
+            case "bulk":
+              endpointInfo.type = mojom.UsbTransferType.BULK;
+              break;
+            case "interrupt":
+              endpointInfo.type = mojom.UsbTransferType.INTERRUPT;
+              break;
+            case "isochronous":
+              endpointInfo.type = mojom.UsbTransferType.ISOCHRONOUS;
+              break;
+          }
+          alternateInfo.endpoints.push(endpointInfo);
+        });
+        interfaceInfo.alternates.push(alternateInfo);
+      });
+      configInfo.interfaces.push(interfaceInfo);
+    });
+    deviceInfo.configurations.push(configInfo);
+  });
+  return deviceInfo;
+}
+
+function convertMojoDeviceFilters(input) {
+  let output = [];
+  input.forEach(filter => {
+    output.push(convertMojoDeviceFilter(filter));
+  });
+  return output;
+}
+
+function convertMojoDeviceFilter(input) {
+  let output = {};
+  if (input.hasVendorId)
+    output.vendorId = input.vendorId;
+  if (input.hasProductId)
+    output.productId = input.productId;
+  if (input.hasClassCode)
+    output.classCode = input.classCode;
+  if (input.hasSubclassCode)
+    output.subclassCode = input.subclassCode;
+  if (input.hasProtocolCode)
+    output.protocolCode = input.protocolCode;
+  if (input.serialNumber)
+    output.serialNumber = mojoString16ToString(input.serialNumber);
+  return output;
+}
+
+class FakeDevice {
+  constructor(deviceInit) {
+    this.info_ = deviceInit;
+    this.opened_ = false;
+    this.currentConfiguration_ = null;
+    this.claimedInterfaces_ = new Map();
+  }
+
+  getConfiguration() {
+    if (this.currentConfiguration_) {
+      return Promise.resolve({
+          value: this.currentConfiguration_.configurationValue });
+    } else {
+      return Promise.resolve({ value: 0 });
+    }
+  }
+
+  open() {
+    assert_false(this.opened_);
+    this.opened_ = true;
+    return Promise.resolve({result: {success: mojom.UsbOpenDeviceSuccess.OK}});
+  }
+
+  close() {
+    assert_true(this.opened_);
+    this.opened_ = false;
+    return Promise.resolve();
+  }
+
+  setConfiguration(value) {
+    assert_true(this.opened_);
+
+    let selectedConfiguration = this.info_.configurations.find(
+        configuration => configuration.configurationValue == value);
+    // Blink should never request an invalid configuration.
+    assert_not_equals(selectedConfiguration, undefined);
+    this.currentConfiguration_ = selectedConfiguration;
+    return Promise.resolve({ success: true });
+  }
+
+  async claimInterface(interfaceNumber) {
+    assert_true(this.opened_);
+    assert_false(this.currentConfiguration_ == null, 'device configured');
+    assert_false(this.claimedInterfaces_.has(interfaceNumber),
+                 'interface already claimed');
+
+    const protectedInterfaces = new Set([
+      mojom.USB_AUDIO_CLASS,
+      mojom.USB_HID_CLASS,
+      mojom.USB_MASS_STORAGE_CLASS,
+      mojom.USB_SMART_CARD_CLASS,
+      mojom.USB_VIDEO_CLASS,
+      mojom.USB_AUDIO_VIDEO_CLASS,
+      mojom.USB_WIRELESS_CLASS,
+    ]);
+
+    let iface = this.currentConfiguration_.interfaces.find(
+        iface => iface.interfaceNumber == interfaceNumber);
+    // Blink should never request an invalid interface or alternate.
+    assert_false(iface == undefined);
+    if (iface.alternates.some(
+            alt => protectedInterfaces.has(alt.interfaceClass))) {
+      return {result: mojom.UsbClaimInterfaceResult.kProtectedClass};
+    }
+
+    this.claimedInterfaces_.set(interfaceNumber, 0);
+    return {result: mojom.UsbClaimInterfaceResult.kSuccess};
+  }
+
+  releaseInterface(interfaceNumber) {
+    assert_true(this.opened_);
+    assert_false(this.currentConfiguration_ == null, 'device configured');
+    assert_true(this.claimedInterfaces_.has(interfaceNumber));
+    this.claimedInterfaces_.delete(interfaceNumber);
+    return Promise.resolve({ success: true });
+  }
+
+  setInterfaceAlternateSetting(interfaceNumber, alternateSetting) {
+    assert_true(this.opened_);
+    assert_false(this.currentConfiguration_ == null, 'device configured');
+    assert_true(this.claimedInterfaces_.has(interfaceNumber));
+
+    let iface = this.currentConfiguration_.interfaces.find(
+        iface => iface.interfaceNumber == interfaceNumber);
+    // Blink should never request an invalid interface or alternate.
+    assert_false(iface == undefined);
+    assert_true(iface.alternates.some(
+        x => x.alternateSetting == alternateSetting));
+    this.claimedInterfaces_.set(interfaceNumber, alternateSetting);
+    return Promise.resolve({ success: true });
+  }
+
+  reset() {
+    assert_true(this.opened_);
+    return Promise.resolve({ success: true });
+  }
+
+  clearHalt(endpoint) {
+    assert_true(this.opened_);
+    assert_false(this.currentConfiguration_ == null, 'device configured');
+    // TODO(reillyg): Assert that endpoint is valid.
+    return Promise.resolve({ success: true });
+  }
+
+  async controlTransferIn(params, length, timeout) {
+    assert_true(this.opened_);
+
+    if ((params.recipient == mojom.UsbControlTransferRecipient.INTERFACE ||
+         params.recipient == mojom.UsbControlTransferRecipient.ENDPOINT) &&
+        this.currentConfiguration_ == null) {
+      return {
+        status: mojom.UsbTransferStatus.PERMISSION_DENIED,
+      };
+    }
+
+    return {
+      status: mojom.UsbTransferStatus.OK,
+      data: {
+        buffer: [
+          length >> 8, length & 0xff, params.request, params.value >> 8,
+          params.value & 0xff, params.index >> 8, params.index & 0xff
+        ]
+      }
+    };
+  }
+
+  async controlTransferOut(params, data, timeout) {
+    assert_true(this.opened_);
+
+    if ((params.recipient == mojom.UsbControlTransferRecipient.INTERFACE ||
+         params.recipient == mojom.UsbControlTransferRecipient.ENDPOINT) &&
+        this.currentConfiguration_ == null) {
+      return {
+        status: mojom.UsbTransferStatus.PERMISSION_DENIED,
+      };
+    }
+
+    return {status: mojom.UsbTransferStatus.OK, bytesWritten: data.byteLength};
+  }
+
+  genericTransferIn(endpointNumber, length, timeout) {
+    assert_true(this.opened_);
+    assert_false(this.currentConfiguration_ == null, 'device configured');
+    // TODO(reillyg): Assert that endpoint is valid.
+    let data = new Array(length);
+    for (let i = 0; i < length; ++i)
+      data[i] = i & 0xff;
+    return Promise.resolve(
+        {status: mojom.UsbTransferStatus.OK, data: {buffer: data}});
+  }
+
+  genericTransferOut(endpointNumber, data, timeout) {
+    assert_true(this.opened_);
+    assert_false(this.currentConfiguration_ == null, 'device configured');
+    // TODO(reillyg): Assert that endpoint is valid.
+    return Promise.resolve(
+        {status: mojom.UsbTransferStatus.OK, bytesWritten: data.byteLength});
+  }
+
+  isochronousTransferIn(endpointNumber, packetLengths, timeout) {
+    assert_true(this.opened_);
+    assert_false(this.currentConfiguration_ == null, 'device configured');
+    // TODO(reillyg): Assert that endpoint is valid.
+    let data = new Array(packetLengths.reduce((a, b) => a + b, 0));
+    let dataOffset = 0;
+    let packets = new Array(packetLengths.length);
+    for (let i = 0; i < packetLengths.length; ++i) {
+      for (let j = 0; j < packetLengths[i]; ++j)
+        data[dataOffset++] = j & 0xff;
+      packets[i] = {
+        length: packetLengths[i],
+        transferredLength: packetLengths[i],
+        status: mojom.UsbTransferStatus.OK
+      };
+    }
+    return Promise.resolve({data: {buffer: data}, packets: packets});
+  }
+
+  isochronousTransferOut(endpointNumber, data, packetLengths, timeout) {
+    assert_true(this.opened_);
+    assert_false(this.currentConfiguration_ == null, 'device configured');
+    // TODO(reillyg): Assert that endpoint is valid.
+    let packets = new Array(packetLengths.length);
+    for (let i = 0; i < packetLengths.length; ++i) {
+      packets[i] = {
+        length: packetLengths[i],
+        transferredLength: packetLengths[i],
+        status: mojom.UsbTransferStatus.OK
+      };
+    }
+    return Promise.resolve({ packets: packets });
+  }
+}
+
+class FakeWebUsbService {
+  constructor() {
+    this.receiver_ = new mojom.WebUsbServiceReceiver(this);
+    this.devices_ = new Map();
+    this.devicesByGuid_ = new Map();
+    this.client_ = null;
+    this.nextGuid_ = 0;
+  }
+
+  addBinding(handle) {
+    this.receiver_.$.bindHandle(handle);
+  }
+
+  addDevice(fakeDevice, info) {
+    let device = {
+      fakeDevice: fakeDevice,
+      guid: (this.nextGuid_++).toString(),
+      info: info,
+      receivers: [],
+    };
+    this.devices_.set(fakeDevice, device);
+    this.devicesByGuid_.set(device.guid, device);
+    if (this.client_)
+      this.client_.onDeviceAdded(fakeDeviceInitToDeviceInfo(device.guid, info));
+  }
+
+  async forgetDevice(guid) {
+    // Permissions are currently untestable through WPT.
+  }
+
+  removeDevice(fakeDevice) {
+    let device = this.devices_.get(fakeDevice);
+    if (!device)
+      throw new Error('Cannot remove unknown device.');
+
+    for (const receiver of device.receivers)
+      receiver.$.close();
+    this.devices_.delete(device.fakeDevice);
+    this.devicesByGuid_.delete(device.guid);
+    if (this.client_) {
+      this.client_.onDeviceRemoved(
+          fakeDeviceInitToDeviceInfo(device.guid, device.info));
+    }
+  }
+
+  removeAllDevices() {
+    this.devices_.forEach(device => {
+      for (const receiver of device.receivers)
+        receiver.$.close();
+      this.client_.onDeviceRemoved(
+          fakeDeviceInitToDeviceInfo(device.guid, device.info));
+    });
+    this.devices_.clear();
+    this.devicesByGuid_.clear();
+  }
+
+  getDevices() {
+    let devices = [];
+    this.devices_.forEach(device => {
+      devices.push(fakeDeviceInitToDeviceInfo(device.guid, device.info));
+    });
+    return Promise.resolve({ results: devices });
+  }
+
+  getDevice(guid, request) {
+    let retrievedDevice = this.devicesByGuid_.get(guid);
+    if (retrievedDevice) {
+      const receiver =
+          new mojom.UsbDeviceReceiver(new FakeDevice(retrievedDevice.info));
+      receiver.$.bindHandle(request.handle);
+      receiver.onConnectionError.addListener(() => {
+        if (retrievedDevice.fakeDevice.onclose)
+          retrievedDevice.fakeDevice.onclose();
+      });
+      retrievedDevice.receivers.push(receiver);
+    } else {
+      request.handle.close();
+    }
+  }
+
+  getPermission(deviceFilters) {
+    return new Promise(resolve => {
+      if (navigator.usb.test.onrequestdevice) {
+        navigator.usb.test.onrequestdevice(
+            new USBDeviceRequestEvent(deviceFilters, resolve));
+      } else {
+        resolve({ result: null });
+      }
+    });
+  }
+
+  setClient(client) {
+    this.client_ = client;
+  }
+}
+
+class USBDeviceRequestEvent {
+  constructor(deviceFilters, resolve) {
+    this.filters = convertMojoDeviceFilters(deviceFilters);
+    this.resolveFunc_ = resolve;
+  }
+
+  respondWith(value) {
+    // Wait until |value| resolves (if it is a Promise). This function returns
+    // no value.
+    Promise.resolve(value).then(fakeDevice => {
+      let device = internal.webUsbService.devices_.get(fakeDevice);
+      let result = null;
+      if (device) {
+        result = fakeDeviceInitToDeviceInfo(device.guid, device.info);
+      }
+      this.resolveFunc_({ result: result });
+    }, () => {
+      this.resolveFunc_({ result: null });
+    });
+  }
+}
+
+// Unlike FakeDevice this class is exported to callers of USBTest.addFakeDevice.
+class FakeUSBDevice {
+  constructor() {
+    this.onclose = null;
+  }
+
+  disconnect() {
+    setTimeout(() => internal.webUsbService.removeDevice(this), 0);
+  }
+}
+
+class USBTest {
+  constructor() {
+    this.onrequestdevice = undefined;
+  }
+
+  async initialize() {
+    if (internal.initialized)
+      return;
+
+    // Be ready to handle 'ReadyForAttachment' message from child iframes.
+    if ('window' in self) {
+      getMessagePort(window);
+    }
+
+    mojom = await loadMojomDefinitions();
+    internal.webUsbService = new FakeWebUsbService();
+    internal.webUsbServiceInterceptor =
+        new MojoInterfaceInterceptor(mojom.WebUsbService.$interfaceName);
+    internal.webUsbServiceInterceptor.oninterfacerequest =
+        e => internal.webUsbService.addBinding(e.handle);
+    internal.webUsbServiceInterceptor.start();
+
+    // Wait for a call to GetDevices() to pass between the renderer and the
+    // mock in order to establish that everything is set up.
+    await navigator.usb.getDevices();
+    internal.initialized = true;
+  }
+
+  // Returns a promise that is resolved when the implementation of |usb| in the
+  // global scope for |context| is controlled by the current context.
+  attachToContext(context) {
+    if (!internal.initialized)
+      throw new Error('Call initialize() before attachToContext()');
+
+    let target = context.constructor.name === 'Worker' ? context : window;
+    return getMessagePort(target).then(() => {
+      return new Promise(resolve => {
+        internal.messagePort.onmessage = channelEvent => {
+          switch (channelEvent.data.type) {
+            case mojom.WebUsbService.$interfaceName:
+              internal.webUsbService.addBinding(channelEvent.data.handle);
+              break;
+            case 'Complete':
+              resolve();
+              break;
+          }
+        };
+        internal.messagePort.postMessage({
+          type: 'Attach',
+          interfaces: [
+            mojom.WebUsbService.$interfaceName,
+          ]
+        });
+      });
+    });
+  }
+
+  addFakeDevice(deviceInit) {
+    if (!internal.initialized)
+      throw new Error('Call initialize() before addFakeDevice().');
+
+    // |addDevice| and |removeDevice| are called in a setTimeout callback so
+    // that tests do not rely on the device being immediately available which
+    // may not be true for all implementations of this test API.
+    let fakeDevice = new FakeUSBDevice();
+    setTimeout(
+        () => internal.webUsbService.addDevice(fakeDevice, deviceInit), 0);
+    return fakeDevice;
+  }
+
+  reset() {
+    if (!internal.initialized)
+      throw new Error('Call initialize() before reset().');
+
+    // Reset the mocks in a setTimeout callback so that tests do not rely on
+    // the fact that this polyfill can do this synchronously.
+    return new Promise(resolve => {
+      setTimeout(() => {
+        if (internal.messagePort !== null)
+          internal.messagePort.close();
+        internal.messagePort = null;
+        internal.webUsbService.removeAllDevices();
+        resolve();
+      }, 0);
+    });
+  }
+}
+
+navigator.usb.test = new USBTest();
+
+})();