Add BluetoothServerSocket implementation.

internal/platform/implementation/linux/bluetoth_classic_server_socket.cc

@@ -0,0 +1,47 @@
+#include "absl/strings/str_replace.h"
+#include "absl/strings/substitute.h"
+#include "internal/platform/exception.h"
+#include "internal/platform/implementation/bluetooth_classic.h"
+#include "internal/platform/implementation/linux/bluetooth_classic_device.h"
+#include "internal/platform/implementation/linux/bluetooth_classic_server_socket.h"
+#include "internal/platform/implementation/linux/bluetooth_classic_socket.h"
+#include "internal/platform/implementation/linux/bluez.h"
+#include "internal/platform/logging.h"
+#include <systemd/sd-bus.h>
+
+namespace nearby {
+namespace linux {
+std::unique_ptr<api::BluetoothSocket> BluetoothServerSocket::Accept() {
+  auto pair = profile_manager_.GetServiceRecordFD(service_uuid_);
+  if (!pair.has_value()) {
+    NEARBY_LOGS(ERROR) << __func__
+                       << "Failed to get a new connection for profile "
+                       << service_uuid_ << " for device ";
+    return nullptr;
+  }
+  auto device_object_path =
+      absl::Substitute("$0/dev_$1", adapter_object_path_,
+                       absl::StrReplaceAll(pair->first, {{":", "_"}}));
+  auto device = BluetoothDevice(sd_bus_ref(system_bus_), device_object_path);
+  return std::unique_ptr<api::BluetoothSocket>(new BluetoothSocket(
+      device, device_object_path, service_uuid_, pair->second));
+}
+
+Exception BluetoothServerSocket::Close() {
+  __attribute__((cleanup(sd_bus_error_free))) sd_bus_error err =
+      SD_BUS_ERROR_NULL;
+  auto profile_object_path =
+      absl::Substitute("/com/github/google/nearby/profiles/$0", service_uuid_);
+
+  if (sd_bus_call_method(system_bus_, BLUEZ_SERVICE, "/org/bluez",
+                         "org.bluez.ProfileManager1", "UnregisterProfile", &err,
+                         nullptr, "o", profile_object_path.c_str()) < 0) {
+    NEARBY_LOGS(ERROR) << __func__ << "Error unregistering profile object "
+                       << profile_object_path << ": " << err.message;
+    return {Exception::kFailed};
+  }
+
+  return {Exception::kSuccess};
+}
+} // namespace linux
+} // namespace nearby