blob: 6b6a9820e2123b68e991878965a290ce8b3027de [file] [log] [blame]
/*
* Copyright (C) 2018 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 "fastboot_device.h"
#include <algorithm>
#include <BootControlClient.h>
#include <android-base/logging.h>
#include <android-base/properties.h>
#include <android-base/strings.h>
#include <android/binder_manager.h>
#include <android/hardware/boot/1.0/IBootControl.h>
#include <android/hardware/fastboot/1.1/IFastboot.h>
#include <fastbootshim.h>
#include <fs_mgr.h>
#include <fs_mgr/roots.h>
#include <health-shim/shim.h>
#include <healthhalutils/HealthHalUtils.h>
#include "constants.h"
#include "flashing.h"
#include "tcp_client.h"
#include "usb_client.h"
using std::string_literals::operator""s;
using android::fs_mgr::EnsurePathUnmounted;
using android::fs_mgr::Fstab;
using ::android::hardware::hidl_string;
using ::android::hardware::fastboot::V1_1::IFastboot;
using BootControlClient = FastbootDevice::BootControlClient;
namespace sph = std::placeholders;
std::shared_ptr<aidl::android::hardware::health::IHealth> get_health_service() {
using aidl::android::hardware::health::IHealth;
using HidlHealth = android::hardware::health::V2_0::IHealth;
using aidl::android::hardware::health::HealthShim;
auto service_name = IHealth::descriptor + "/default"s;
if (AServiceManager_isDeclared(service_name.c_str())) {
ndk::SpAIBinder binder(AServiceManager_waitForService(service_name.c_str()));
std::shared_ptr<IHealth> health = IHealth::fromBinder(binder);
if (health != nullptr) return health;
LOG(WARNING) << "AIDL health service is declared, but it cannot be retrieved.";
}
LOG(INFO) << "Unable to get AIDL health service, trying HIDL...";
android::sp<HidlHealth> hidl_health = android::hardware::health::V2_0::get_health_service();
if (hidl_health != nullptr) {
return ndk::SharedRefBase::make<HealthShim>(hidl_health);
}
LOG(WARNING) << "No health implementation is found.";
return nullptr;
}
std::shared_ptr<aidl::android::hardware::fastboot::IFastboot> get_fastboot_service() {
using aidl::android::hardware::fastboot::IFastboot;
using HidlFastboot = android::hardware::fastboot::V1_1::IFastboot;
using aidl::android::hardware::fastboot::FastbootShim;
auto service_name = IFastboot::descriptor + "/default"s;
if (AServiceManager_isDeclared(service_name.c_str())) {
ndk::SpAIBinder binder(AServiceManager_waitForService(service_name.c_str()));
std::shared_ptr<IFastboot> fastboot = IFastboot::fromBinder(binder);
if (fastboot != nullptr) {
LOG(INFO) << "Found and using AIDL fastboot service";
return fastboot;
}
LOG(WARNING) << "AIDL fastboot service is declared, but it cannot be retrieved.";
}
LOG(INFO) << "Unable to get AIDL fastboot service, trying HIDL...";
android::sp<HidlFastboot> hidl_fastboot = HidlFastboot::getService();
if (hidl_fastboot != nullptr) {
LOG(INFO) << "Found and now using fastboot HIDL implementation";
return ndk::SharedRefBase::make<FastbootShim>(hidl_fastboot);
}
LOG(WARNING) << "No fastboot implementation is found.";
return nullptr;
}
FastbootDevice::FastbootDevice()
: kCommandMap({
{FB_CMD_SET_ACTIVE, SetActiveHandler},
{FB_CMD_DOWNLOAD, DownloadHandler},
{FB_CMD_GETVAR, GetVarHandler},
{FB_CMD_SHUTDOWN, ShutDownHandler},
{FB_CMD_REBOOT, RebootHandler},
{FB_CMD_REBOOT_BOOTLOADER, RebootBootloaderHandler},
{FB_CMD_REBOOT_FASTBOOT, RebootFastbootHandler},
{FB_CMD_REBOOT_RECOVERY, RebootRecoveryHandler},
{FB_CMD_ERASE, EraseHandler},
{FB_CMD_FLASH, FlashHandler},
{FB_CMD_CREATE_PARTITION, CreatePartitionHandler},
{FB_CMD_DELETE_PARTITION, DeletePartitionHandler},
{FB_CMD_RESIZE_PARTITION, ResizePartitionHandler},
{FB_CMD_UPDATE_SUPER, UpdateSuperHandler},
{FB_CMD_OEM, OemCmdHandler},
{FB_CMD_GSI, GsiHandler},
{FB_CMD_SNAPSHOT_UPDATE, SnapshotUpdateHandler},
{FB_CMD_FETCH, FetchHandler},
}),
boot_control_hal_(BootControlClient::WaitForService()),
health_hal_(get_health_service()),
fastboot_hal_(get_fastboot_service()),
active_slot_("") {
if (android::base::GetProperty("fastbootd.protocol", "usb") == "tcp") {
transport_ = std::make_unique<ClientTcpTransport>();
} else {
transport_ = std::make_unique<ClientUsbTransport>();
}
// Make sure cache is unmounted, since recovery will have mounted it for
// logging.
Fstab fstab;
if (ReadDefaultFstab(&fstab)) {
EnsurePathUnmounted(&fstab, "/cache");
}
}
FastbootDevice::~FastbootDevice() {
CloseDevice();
}
void FastbootDevice::CloseDevice() {
transport_->Close();
}
std::string FastbootDevice::GetCurrentSlot() {
// Check if a set_active ccommand was issued earlier since the boot control HAL
// returns the slot that is currently booted into.
if (!active_slot_.empty()) {
return active_slot_;
}
// Non-A/B devices must not have boot control HALs.
if (!boot_control_hal_) {
return "";
}
std::string suffix = boot_control_hal_->GetSuffix(boot_control_hal_->GetCurrentSlot());
return suffix;
}
BootControlClient* FastbootDevice::boot1_1() const {
if (boot_control_hal_->GetVersion() >= android::hal::BootControlVersion::BOOTCTL_V1_1) {
return boot_control_hal_.get();
}
return nullptr;
}
bool FastbootDevice::WriteStatus(FastbootResult result, const std::string& message) {
constexpr size_t kResponseReasonSize = 4;
constexpr size_t kNumResponseTypes = 4; // "FAIL", "OKAY", "INFO", "DATA"
char buf[FB_RESPONSE_SZ];
constexpr size_t kMaxMessageSize = sizeof(buf) - kResponseReasonSize;
size_t msg_len = std::min(kMaxMessageSize, message.size());
constexpr const char* kResultStrings[kNumResponseTypes] = {RESPONSE_OKAY, RESPONSE_FAIL,
RESPONSE_INFO, RESPONSE_DATA};
if (static_cast<size_t>(result) >= kNumResponseTypes) {
return false;
}
memcpy(buf, kResultStrings[static_cast<size_t>(result)], kResponseReasonSize);
memcpy(buf + kResponseReasonSize, message.c_str(), msg_len);
size_t response_len = kResponseReasonSize + msg_len;
auto write_ret = this->get_transport()->Write(buf, response_len);
if (write_ret != static_cast<ssize_t>(response_len)) {
PLOG(ERROR) << "Failed to write " << message;
return false;
}
return true;
}
bool FastbootDevice::HandleData(bool read, std::vector<char>* data) {
return HandleData(read, data->data(), data->size());
}
bool FastbootDevice::HandleData(bool read, char* data, uint64_t size) {
auto read_write_data_size = read ? this->get_transport()->Read(data, size)
: this->get_transport()->Write(data, size);
if (read_write_data_size == -1) {
LOG(ERROR) << (read ? "read from" : "write to") << " transport failed";
return false;
}
if (static_cast<size_t>(read_write_data_size) != size) {
LOG(ERROR) << (read ? "read" : "write") << " expected " << size << " bytes, got "
<< read_write_data_size;
return false;
}
return true;
}
void FastbootDevice::ExecuteCommands() {
char command[FB_RESPONSE_SZ + 1];
for (;;) {
auto bytes_read = transport_->Read(command, FB_RESPONSE_SZ);
if (bytes_read == -1) {
PLOG(ERROR) << "Couldn't read command";
return;
}
if (std::count_if(command, command + bytes_read, iscntrl) != 0) {
WriteStatus(FastbootResult::FAIL,
"Command contains control character");
continue;
}
command[bytes_read] = '\0';
LOG(INFO) << "Fastboot command: " << command;
std::vector<std::string> args;
std::string cmd_name;
if (android::base::StartsWith(command, "oem ")) {
args = {command};
cmd_name = FB_CMD_OEM;
} else {
args = android::base::Split(command, ":");
cmd_name = args[0];
}
auto found_command = kCommandMap.find(cmd_name);
if (found_command == kCommandMap.end()) {
WriteStatus(FastbootResult::FAIL, "Unrecognized command " + args[0]);
continue;
}
if (!found_command->second(this, args)) {
return;
}
}
}
bool FastbootDevice::WriteOkay(const std::string& message) {
return WriteStatus(FastbootResult::OKAY, message);
}
bool FastbootDevice::WriteFail(const std::string& message) {
return WriteStatus(FastbootResult::FAIL, message);
}
bool FastbootDevice::WriteInfo(const std::string& message) {
return WriteStatus(FastbootResult::INFO, message);
}