Add EthernetDevice to manage ethernet connection. am: 4d0df88d88 (aba17e1c) · Commits · e / os / android_bootable_recovery

Android.mk

+3 −3

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		@@ -18,9 +18,9 @@ LOCAL_PATH := $(call my-dir)
		RECOVERY_API_VERSION := 3
		RECOVERY_FSTAB_VERSION := 2

		# TARGET_RECOVERY_UI_LIB should be one of librecovery_ui_{default,wear,vr} or a device-specific
		# module that defines make_device() and the exact RecoveryUI class for the target. It defaults to
		# librecovery_ui_default, which uses ScreenRecoveryUI.
		# TARGET_RECOVERY_UI_LIB should be one of librecovery_ui_{default,wear,vr,ethernet} or a
		# device-specific module that defines make_device() and the exact RecoveryUI class for the
		# target. It defaults to librecovery_ui_default, which uses ScreenRecoveryUI.
		TARGET_RECOVERY_UI_LIB ?= librecovery_ui_default

		# librecovery_ui_ext (shared library)

fastboot/fastboot.cpp

+1 −0

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		@@ -52,6 +52,7 @@ Device::BuiltinAction StartFastboot(Device* device, const std::vector<std::strin
		ui->ResetKeyInterruptStatus();
		ui->SetTitle(title_lines);
		ui->ShowText(true);
		device->StartFastboot();

		// Reset to normal system boot so recovery won't cycle indefinitely.
		// TODO(b/112277594) Clear only if 'recovery' field of BCB is empty. If not,

recovery_main.cpp

+5 −0

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		@@ -471,6 +471,11 @@ int main(int argc, char** argv) {
		std::string usb_config =
		fastboot ? "fastboot" : IsRoDebuggable() \|\| IsDeviceUnlocked() ? "adb" : "none";
		std::string usb_state = android::base::GetProperty("sys.usb.state", "none");
		if (fastboot) {
		device->PreFastboot();
		} else {
		device->PreRecovery();
		}
		if (usb_config != usb_state) {
		if (!SetUsbConfig("none")) {
		LOG(ERROR) << "Failed to clear USB config";

recovery_ui/Android.bp

+21 −0

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		@@ -22,6 +22,7 @@ cc_library {

		srcs: [
		"device.cpp",
		"ethernet_ui.cpp",
		"screen_ui.cpp",
		"stub_ui.cpp",
		"ui.cpp",
		@@ -90,3 +91,23 @@ cc_library_static {

		export_include_dirs: ["include"],
		}

		// The default device that uses EthernetRecoveryUI.
		cc_library_static {
		name: "librecovery_ui_ethernet",
		recovery_available: true,

		defaults: [
		"recovery_defaults",
		],

		srcs: [
		"ethernet_device.cpp",
		],

		shared_libs: [
		"libbase",
		],

		export_include_dirs: ["include"],
		}

recovery_ui/ethernet_device.cpp

0 → 100644

+136 −0

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		/*
		* 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.
		*/

		#include <android-base/logging.h>
		#include <android-base/properties.h>
		#include <android-base/strings.h>
		#include <android-base/unique_fd.h>
		#include <arpa/inet.h>
		#include <ifaddrs.h>
		#include <linux/if.h>
		#include <string.h>
		#include <sys/ioctl.h>
		#include <sys/socket.h>
		#include <sys/types.h>

		#include "recovery_ui/device.h"
		#include "recovery_ui/ethernet_ui.h"

		class EthernetDevice : public Device {
		public:
		explicit EthernetDevice(EthernetRecoveryUI* ui);

		void PreRecovery() override;
		void PreFastboot() override;

		private:
		int SetInterfaceFlags(const unsigned set, const unsigned clr);
		void SetTitleIPv6LinkLocalAddress(const bool interface_up);

		android::base::unique_fd ctl_sock_;
		static const std::string interface;
		};

		const std::string EthernetDevice::interface = "eth0";

		EthernetDevice::EthernetDevice(EthernetRecoveryUI* ui)
		: Device(ui), ctl_sock_(socket(AF_INET, SOCK_STREAM \| SOCK_CLOEXEC, 0)) {
		if (ctl_sock_ < 0) {
		PLOG(ERROR) << "Failed to open socket";
		}
		}

		void EthernetDevice::PreRecovery() {
		SetInterfaceFlags(0, IFF_UP);
		SetTitleIPv6LinkLocalAddress(false);
		}

		void EthernetDevice::PreFastboot() {
		android::base::SetProperty("fastbootd.protocol", "tcp");

		if (SetInterfaceFlags(IFF_UP, 0) < 0) {
		LOG(ERROR) << "Failed to bring up interface";
		return;
		}

		SetTitleIPv6LinkLocalAddress(true);
		}

		int EthernetDevice::SetInterfaceFlags(const unsigned set, const unsigned clr) {
		struct ifreq ifr;

		if (ctl_sock_ < 0) {
		return -1;
		}

		memset(&ifr, 0, sizeof(struct ifreq));
		strncpy(ifr.ifr_name, interface.c_str(), IFNAMSIZ);
		ifr.ifr_name[IFNAMSIZ - 1] = 0;

		if (ioctl(ctl_sock_, SIOCGIFFLAGS, &ifr) < 0) {
		PLOG(ERROR) << "Failed to get interface active flags";
		return -1;
		}
		ifr.ifr_flags = (ifr.ifr_flags & (~clr)) \| set;

		if (ioctl(ctl_sock_, SIOCSIFFLAGS, &ifr) < 0) {
		PLOG(ERROR) << "Failed to set interface active flags";
		return -1;
		}

		return 0;
		}

		void EthernetDevice::SetTitleIPv6LinkLocalAddress(const bool interface_up) {
		auto recovery_ui = reinterpret_cast<EthernetRecoveryUI*>(GetUI());
		if (!interface_up) {
		recovery_ui->SetIPv6LinkLocalAddress();
		return;
		}

		struct ifaddrs* ifaddr;
		if (getifaddrs(&ifaddr) == -1) {
		PLOG(ERROR) << "Failed to get interface addresses";
		recovery_ui->SetIPv6LinkLocalAddress();
		return;
		}

		std::unique_ptr<struct ifaddrs, decltype(&freeifaddrs)> guard{ ifaddr, freeifaddrs };
		for (struct ifaddrs* ifa = ifaddr; ifa != nullptr; ifa = ifa->ifa_next) {
		if (ifa->ifa_addr->sa_family != AF_INET6 \|\| interface != ifa->ifa_name) {
		continue;
		}

		auto current_addr = reinterpret_cast<struct sockaddr_in6*>(ifa->ifa_addr);
		if (!IN6_IS_ADDR_LINKLOCAL(&(current_addr->sin6_addr))) {
		continue;
		}

		char addrstr[INET6_ADDRSTRLEN];
		inet_ntop(AF_INET6, reinterpret_cast<const void*>(&current_addr->sin6_addr), addrstr,
		INET6_ADDRSTRLEN);
		LOG(INFO) << "Our IPv6 link-local address is " << addrstr;
		recovery_ui->SetIPv6LinkLocalAddress(addrstr);
		return;
		}

		recovery_ui->SetIPv6LinkLocalAddress();
		}

		// -----------------------------------------------------------------------------------------
		Device* make_device() {
		return new EthernetDevice(new EthernetRecoveryUI);
		}