Tao Bao
2be9737cf4
This leaves the FD implementation details to subclasses. In particular, it allows minadbd to do additional works with the FD after sideloading. Bug: 128415917 Test: atest recovery_component_test Test: atest minadbd_test Test: Sideload package on taimen. Change-Id: I106bbaad05201227bbc5fe28890bbbb06fdcb67e
127 lines
4.0 KiB
C++
127 lines
4.0 KiB
C++
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "minadbd_services.h"
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#include <errno.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <functional>
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#include <memory>
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#include <string>
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#include <string_view>
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#include <thread>
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#include <android-base/file.h>
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#include <android-base/logging.h>
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#include <android-base/memory.h>
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#include <android-base/stringprintf.h>
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#include <android-base/strings.h>
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#include "adb.h"
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#include "adb_unique_fd.h"
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#include "fdevent.h"
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#include "fuse_adb_provider.h"
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#include "fuse_sideload.h"
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#include "minadbd_types.h"
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#include "services.h"
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#include "sysdeps.h"
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static int minadbd_socket = -1;
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void SetMinadbdSocketFd(int socket_fd) {
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minadbd_socket = socket_fd;
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}
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static bool WriteCommandToFd(MinadbdCommands cmd, int fd) {
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char message[kMinadbdMessageSize];
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memcpy(message, kMinadbdCommandPrefix, strlen(kMinadbdStatusPrefix));
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android::base::put_unaligned(message + strlen(kMinadbdStatusPrefix), cmd);
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if (!android::base::WriteFully(fd, message, kMinadbdMessageSize)) {
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PLOG(ERROR) << "Failed to write message " << message;
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return false;
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}
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return true;
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}
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// Blocks and reads the command status from |fd|. Returns false if the received message has a
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// format error.
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static bool WaitForCommandStatus(int fd, MinadbdCommandStatus* status) {
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char buffer[kMinadbdMessageSize];
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if (!android::base::ReadFully(fd, buffer, kMinadbdMessageSize)) {
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PLOG(ERROR) << "Failed to response status from socket";
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exit(kMinadbdSocketIOError);
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}
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std::string message(buffer, buffer + kMinadbdMessageSize);
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if (!android::base::StartsWith(message, kMinadbdStatusPrefix)) {
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LOG(ERROR) << "Failed to parse status in " << message;
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return false;
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}
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*status = android::base::get_unaligned<MinadbdCommandStatus>(
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message.substr(strlen(kMinadbdStatusPrefix)).c_str());
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return true;
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}
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static void sideload_host_service(unique_fd sfd, const std::string& args) {
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int64_t file_size;
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int block_size;
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if ((sscanf(args.c_str(), "%" SCNd64 ":%d", &file_size, &block_size) != 2) || file_size <= 0 ||
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block_size <= 0) {
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LOG(ERROR) << "bad sideload-host arguments: " << args;
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exit(kMinadbdPackageSizeError);
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}
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LOG(INFO) << "sideload-host file size " << file_size << ", block size " << block_size;
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if (!WriteCommandToFd(MinadbdCommands::kInstall, minadbd_socket)) {
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exit(kMinadbdSocketIOError);
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}
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auto adb_data_reader = std::make_unique<FuseAdbDataProvider>(sfd, file_size, block_size);
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if (int result = run_fuse_sideload(std::move(adb_data_reader)); result != 0) {
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LOG(ERROR) << "Failed to start fuse";
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exit(kMinadbdFuseStartError);
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}
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MinadbdCommandStatus status;
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if (!WaitForCommandStatus(minadbd_socket, &status)) {
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exit(kMinadbdMessageFormatError);
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}
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LOG(INFO) << "Got command status: " << static_cast<unsigned int>(status);
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LOG(INFO) << "sideload_host finished";
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exit(kMinadbdSuccess);
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}
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unique_fd daemon_service_to_fd(std::string_view name, atransport* /* transport */) {
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if (name.starts_with("sideload:")) {
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// This exit status causes recovery to print a special error message saying to use a newer adb
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// (that supports sideload-host).
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exit(kMinadbdAdbVersionError);
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} else if (name.starts_with("sideload-host:")) {
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std::string arg(name.substr(strlen("sideload-host:")));
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return create_service_thread("sideload-host",
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std::bind(sideload_host_service, std::placeholders::_1, arg));
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}
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return unique_fd{};
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}
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