Add initial BLEv2 Bluetooth Adapter

PiperOrigin-RevId: 551922301

internal/platform/implementation/BUILD

@@ -101,7 +101,6 @@ cc_library(
         # TODO: Support WebRTC
         "@com_google_absl//absl/container:flat_hash_map",
         "@com_google_absl//absl/functional:any_invocable",
-        "@com_google_absl//absl/log:check",
         "@com_google_absl//absl/status",
         "@com_google_absl//absl/status:statusor",
         "@com_google_absl//absl/strings",

internal/platform/implementation/apple/BUILD

@@ -111,6 +111,7 @@ objc_library(
         "ble_server_socket.mm",
         "ble_socket.mm",
         "ble_utils.mm",
+        "bluetooth_adapter_v2.mm",
         "utils.mm",
     ],
     hdrs = [
@@ -118,6 +119,7 @@ objc_library(
         "ble_server_socket.h",
         "ble_socket.h",
         "ble_utils.h",
+        "bluetooth_adapter_v2.h",
         "utils.h",
     ],
     # Prevent Objective-C++ headers from being pulled into swift.

internal/platform/implementation/apple/bluetooth_adapter_v2.h

@@ -0,0 +1,90 @@
+// Copyright 2022 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Note: File language is detected using heuristics. Many Objective-C++ headers are incorrectly
+// classified as C++ resulting in invalid linter errors. The use of "NSArray" and other Foundation
+// classes like "NSData", "NSDictionary" and "NSUUID" are highly weighted for Objective-C and
+// Objective-C++ scores. Oddly, "#import <Foundation/Foundation.h>" does not contribute any points.
+// This comment alone should be enough to trick the IDE in to believing this is actually some sort
+// of Objective-C file. See: cs/google3/devtools/search/lang/recognize_language_classifiers_data
+
+#import <Foundation/Foundation.h>
+
+#include <string>
+
+#include "absl/strings/string_view.h"
+#include "internal/platform/implementation/bluetooth_adapter.h"
+
+namespace nearby {
+namespace apple {
+
+// Concrete implementation representing the local device Bluetooth adapter.
+class BluetoothAdapter : public api::BluetoothAdapter {
+ public:
+  BluetoothAdapter() = default;
+  ~BluetoothAdapter() override = default;
+
+  // Synchronously sets the status of the BluetoothAdapter to @c status, and
+  // returns true if the operation was a success.
+  bool SetStatus(api::BluetoothAdapter::Status status) override;
+
+  // Returns true if the BluetoothAdapter's current status is @c kEnabled.
+  bool IsEnabled() const override;
+
+  // Get the current Bluetooth scan mode of the local Bluetooth adapter.
+  //
+  // The Bluetooth scan mode determines if the local adapter is connectable
+  // and/or discoverable from remote Bluetooth devices.
+  //
+  // Possible values are: @c kNone, @c kConnectable,
+  // @c kConnectableDiscoverable.
+  //
+  // Returns @c kUnknown on error.
+  api::BluetoothAdapter::ScanMode GetScanMode() const override;
+
+  // Synchronously sets the scan mode of the adapter, and returns true if the
+  // operation was a success.
+  bool SetScanMode(api::BluetoothAdapter::ScanMode scan_mode) override;
+
+  // Get the friendly Bluetooth name of the local Bluetooth adapter.
+  //
+  // Returns an empty string on error
+  std::string GetName() const override;
+
+  // Set and persist the friendly Bluetooth name of the local Bluetooth adapter.
+  //
+  // This name is visible to remote Bluetooth devices.
+  //
+  // Valid Bluetooth names are a maximum of 248 bytes using UTF-8 encoding,
+  // although many remote devices can only display the first 40 characters, and
+  // some may be limited to just 20.
+  bool SetName(absl::string_view name) override;
+
+  // Set the friendly Bluetooth name of the local Bluetooth adapter.
+  //
+  // This name is visible to remote Bluetooth devices.
+  //
+  // Valid Bluetooth names are a maximum of 248 bytes using UTF-8 encoding,
+  // although many remote devices can only display the first 40 characters, and
+  // some may be limited to just 20.
+  //
+  // If persist is false, we will restore the original radio names when complete.
+  bool SetName(absl::string_view name, bool persist) override;
+
+  // Returns BT MAC address assigned to this adapter.
+  std::string GetMacAddress() const override;
+};
+
+}  // namespace apple
+}  // namespace nearby

internal/platform/implementation/apple/bluetooth_adapter_v2.mm

@@ -0,0 +1,71 @@
+// Copyright 2022 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import "internal/platform/implementation/apple/bluetooth_adapter_v2.h"
+
+#import <Foundation/Foundation.h>
+
+#include <string>
+
+#include "absl/strings/string_view.h"
+#include "internal/platform/implementation/bluetooth_adapter.h"
+
+namespace nearby {
+namespace apple {
+
+bool BluetoothAdapter::SetStatus(api::BluetoothAdapter::Status status) {
+  // We can't force a radio state in macOS/iOS.
+  // NOTE: This is supposed to return the success/failure of the change (which should always be
+  // "fail" for our case). However, usage in the codebase expects this to return with "success" if
+  // the radio is on, so we just return whether the radio is currently enabled.
+  return IsEnabled();
+}
+
+// TODO(b/290385712): Implement.
+bool BluetoothAdapter::IsEnabled() const {
+  return true;
+}
+
+// TODO(b/290385712): Implement.
+api::BluetoothAdapter::ScanMode BluetoothAdapter::GetScanMode() const {
+  return api::BluetoothAdapter::ScanMode::kUnknown;
+}
+
+// TODO(b/290385712): Implement.
+bool BluetoothAdapter::SetScanMode(api::BluetoothAdapter::ScanMode scan_mode) {
+  return false;
+}
+
+// TODO(b/290385712): Implement.
+std::string BluetoothAdapter::GetName() const {
+  return "";
+}
+
+// TODO(b/290385712): Implement.
+bool BluetoothAdapter::SetName(absl::string_view name) {
+  return false;
+}
+
+// TODO(b/290385712): Implement.
+bool BluetoothAdapter::SetName(absl::string_view name, bool persist) {
+  return false;
+}
+
+// TODO(b/290385712): Implement.
+std::string BluetoothAdapter::GetMacAddress() const {
+  return "";
+}
+
+}  // namespace apple
+}  // namespace nearby