From 042672729c7460db36e2ec224661246570406d5f Mon Sep 17 00:00:00 2001
From: Hongguang Chen <hgchen@google.com>
Date: Tue, 21 Apr 2020 20:58:04 -0700
Subject: Add EthernetDevice to manage ethernet connection.
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The current fastbootd only supports USB protocol. But some Android TV
devices are built without USB port. The fastbootd cannot be used on
those ATV devices due to it. aosp/1295566 enables fastbootd over
ethernet.

This change adds an EthernetDevice to manage ethernet connection and set
fastbootd protcol property fastbootd.protocol to enable fastbootd over
ethernet in recovery mode. It uses IPv6 link-local address to not expose
the devices out of the network segment. The devices who want to use this
EthernetDevice should add
“TARGET_RECOVERY_UI_LIB := librecovery_ui_ethernet” into BoardConfig.mk.

BUG: 152544169
Test: Enter and exit fastboot mode and check eth0 IPv6 link-local address
on screen UI.

Change-Id: I73fe44be3790bdba5a6059fbba3f7264b21eed99
---
 recovery_ui/include/recovery_ui/device.h      | 12 ++++++++++
 recovery_ui/include/recovery_ui/ethernet_ui.h | 34 +++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 recovery_ui/include/recovery_ui/ethernet_ui.h

(limited to 'recovery_ui/include')

diff --git a/recovery_ui/include/recovery_ui/device.h b/recovery_ui/include/recovery_ui/device.h
index f4f993638..76166f09d 100644
--- a/recovery_ui/include/recovery_ui/device.h
+++ b/recovery_ui/include/recovery_ui/device.h
@@ -79,10 +79,22 @@ class Device {
     ui_.reset(ui);
   }
 
+  // Called before recovery mode started up, to perform whatever device-specific recovery mode
+  // preparation as needed.
+  virtual void PreRecovery() {}
+
   // Called when recovery starts up (after the UI has been obtained and initialized and after the
   // arguments have been parsed, but before anything else).
   virtual void StartRecovery() {}
 
+  // Called before fastboot mode is started up, to perform whatever device-specific fastboot mode
+  // preparation as needed.
+  virtual void PreFastboot() {}
+
+  // Called when fastboot starts up (after the UI has been obtained and initialized and after the
+  // arguments have been parsed, but before anything else).
+  virtual void StartFastboot() {}
+
   // Called from the main thread when recovery is at the main menu and waiting for input, and a key
   // is pressed. (Note that "at" the main menu does not necessarily mean the menu is visible;
   // recovery will be at the main menu with it invisible after an unsuccessful operation, such as
diff --git a/recovery_ui/include/recovery_ui/ethernet_ui.h b/recovery_ui/include/recovery_ui/ethernet_ui.h
new file mode 100644
index 000000000..f40c73f69
--- /dev/null
+++ b/recovery_ui/include/recovery_ui/ethernet_ui.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * 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
+ *
+ *      http://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.
+ */
+
+#ifndef RECOVERY_ETHERNET_UI_H
+#define RECOVERY_ETHERNET_UI_H
+
+#include "screen_ui.h"
+
+class EthernetRecoveryUI : public ScreenRecoveryUI {
+ public:
+  EthernetRecoveryUI() {}
+  void SetTitle(const std::vector<std::string>& lines) override;
+
+  // For EthernetDevice
+  void SetIPv6LinkLocalAddress(const std::string& address = "");
+
+ private:
+  std::string address_;
+};
+
+#endif  // RECOVERY_ETHERNET_UI_H
-- 
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