Chromad: Add authentication flow

chromeos/dbus/auth_policy_client.cc

Index: chromeos/dbus/auth_policy_client.cc
diff --git a/chromeos/dbus/auth_policy_client.cc b/chromeos/dbus/auth_policy_client.cc
index 076dd58f145ac642e1c99f999d705350f8c922fc..f52d25a119da0997f4534392105b33eff3704497 100644
--- a/chromeos/dbus/auth_policy_client.cc
+++ b/chromeos/dbus/auth_policy_client.cc
@@ -22,20 +22,33 @@ class AuthPolicyClientImpl : public AuthPolicyClient {
 
   // AuthPolicyClient override.
   void JoinAdDomain(const std::string& machine_name,
-                    const std::string& user,
+                    const std::string& user_principal_name,
                     int password_fd,
                     const JoinCallback& callback) override {
     dbus::MethodCall method_call(authpolicy::kAuthPolicyInterface,
                                  authpolicy::kAuthPolicyJoinADDomain);
     dbus::MessageWriter writer(&method_call);
     writer.AppendString(machine_name);
-    writer.AppendString(user);
+    writer.AppendString(user_principal_name);
     writer.AppendFileDescriptor(password_fd);
     proxy_->CallMethod(&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
                        base::Bind(&AuthPolicyClientImpl::HandleJoinCallback,
                                   weak_ptr_factory_.GetWeakPtr(), callback));
   }
 
+  void AuthenticateUser(const std::string& user_principal_name,
+                        int password_fd,
+                        const AuthCallback& callback) override {
+    dbus::MethodCall method_call(authpolicy::kAuthPolicyInterface,
+                                 authpolicy::kAuthPolicyAuthenticateUser);
+    dbus::MessageWriter writer(&method_call);
+    writer.AppendString(user_principal_name);
+    writer.AppendFileDescriptor(password_fd);
+    proxy_->CallMethod(&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
+                       base::Bind(&AuthPolicyClientImpl::HandleAuthCallback,
+                                  weak_ptr_factory_.GetWeakPtr(), callback));
+  }
+
   void RefreshDevicePolicy(const RefreshPolicyCallback& callback) override {
     dbus::MethodCall method_call(authpolicy::kAuthPolicyInterface,
                                  authpolicy::kAuthPolicyRefreshDevicePolicy);
@@ -97,6 +110,31 @@ class AuthPolicyClientImpl : public AuthPolicyClient {
     callback.Run(res);
   }
 
+  void HandleAuthCallback(const AuthCallback& callback,
+                          dbus::Response* response) {
+    std::string user_id;
+    int res = authpolicy::AUTH_USER_ERROR_DBUS_FAILURE;
+    if (!response) {
+      LOG(ERROR) << "Auth: Failed to  call to authpolicy";
+      // TODO(rsorokin): make proper call, after defining possible errors codes.
+      callback.Run(authpolicy::AUTH_USER_ERROR_DBUS_FAILURE, user_id);
+      return;
+    }
+    dbus::MessageReader reader(response);
+    if (!reader.PopInt32(&res)) {
+      LOG(ERROR) << "Auth: Failed to get an error from the response";
+      // TODO(rsorokin): make proper call, after defining possible errors codes.
+      callback.Run(res, user_id);
+      return;
+    }
+    if (!reader.PopString(&user_id)) {
+      LOG(ERROR) << "Auth: Failed to get user_id from the response";
+      callback.Run(res, user_id);
+      return;
+    }
+    callback.Run(res, user_id);
+  }
+
   dbus::Bus* bus_ = nullptr;
   dbus::ObjectProxy* proxy_ = nullptr;