Implement FilePackage class (37304f3c) · Commits · e / os / android_bootable_recovery

Android.bp

+24 −1

Original line number	Diff line number	Diff line
		@@ -151,6 +151,7 @@ cc_defaults {
		static_libs: [
		"librecovery_fastboot",
		"libminui",
		"libpackage",
		"libverifier",
		"libotautil",

		@@ -175,7 +176,6 @@ cc_library_static {
		"fsck_unshare_blocks.cpp",
		"fuse_sdcard_provider.cpp",
		"install.cpp",
		"package.cpp",
		"recovery.cpp",
		"roots.cpp",
		],
		@@ -210,6 +210,29 @@ cc_library_static {
		],
		}

		cc_library_static {
		name: "libpackage",
		recovery_available: true,

		defaults: [
		"recovery_defaults",
		],

		srcs: [
		"package.cpp",
		],

		shared_libs: [
		"libbase",
		"libcrypto",
		"libziparchive",
		],

		static_libs: [
		"libotautil",
		],
		}

		cc_binary {
		name: "recovery",
		recovery: true,

package.cpp

+111 −3

Original line number	Diff line number	Diff line
		@@ -17,10 +17,12 @@
		#include "package.h"

		#include <string.h>
		#include <unistd.h>

		#include <android-base/file.h>
		#include <android-base/logging.h>
		#include <android-base/stringprintf.h>
		#include <openssl/sha.h>
		#include <android-base/unique_fd.h>

		#include "otautil/error_code.h"
		#include "otautil/sysutil.h"
		@@ -67,14 +69,38 @@ class MemoryPackage : public Package {
		ZipArchiveHandle zip_handle_;
		};

		// TODO(xunchang) Implement the PackageFromFd.

		void Package::SetProgress(float progress) {
		if (set_progress_) {
		set_progress_(progress);
		}
		}

		class FilePackage : public Package {
		public:
		FilePackage(android::base::unique_fd&& fd, uint64_t file_size, const std::string& path,
		const std::function<void(float)>& set_progress);

		~FilePackage() override;

		uint64_t GetPackageSize() const override {
		return package_size_;
		}

		bool ReadFullyAtOffset(uint8_t* buffer, uint64_t byte_count, uint64_t offset) override;

		ZipArchiveHandle GetZipArchiveHandle() override;

		bool UpdateHashAtOffset(const std::vector<HasherUpdateCallback>& hashers, uint64_t start,
		uint64_t length) override;

		private:
		android::base::unique_fd fd_; // The underlying fd to the open package.
		uint64_t package_size_;
		std::string path_; // The physical path to the package.

		ZipArchiveHandle zip_handle_;
		};

		std::unique_ptr<Package> Package::CreateMemoryPackage(
		const std::string& path, const std::function<void(float)>& set_progress) {
		std::unique_ptr<MemMapping> mmap = std::make_unique<MemMapping>();
		@@ -86,6 +112,23 @@ std::unique_ptr<Package> Package::CreateMemoryPackage(
		return std::make_unique<MemoryPackage>(path, std::move(mmap), set_progress);
		}

		std::unique_ptr<Package> Package::CreateFilePackage(
		const std::string& path, const std::function<void(float)>& set_progress) {
		android::base::unique_fd fd(open(path.c_str(), O_RDONLY));
		if (fd == -1) {
		PLOG(ERROR) << "Failed to open " << path;
		return nullptr;
		}

		off64_t file_size = lseek64(fd.get(), 0, SEEK_END);
		if (file_size == -1) {
		PLOG(ERROR) << "Failed to get the package size";
		return nullptr;
		}

		return std::make_unique<FilePackage>(std::move(fd), file_size, path, set_progress);
		}

		std::unique_ptr<Package> Package::CreateMemoryPackage(
		std::vector<uint8_t> content, const std::function<void(float)>& set_progress) {
		return std::make_unique<MemoryPackage>(std::move(content), set_progress);
		@@ -152,3 +195,68 @@ ZipArchiveHandle MemoryPackage::GetZipArchiveHandle() {

		return zip_handle_;
		}

		FilePackage::FilePackage(android::base::unique_fd&& fd, uint64_t file_size, const std::string& path,
		const std::function<void(float)>& set_progress)
		: fd_(std::move(fd)), package_size_(file_size), path_(path), zip_handle_(nullptr) {
		set_progress_ = set_progress;
		}

		FilePackage::~FilePackage() {
		if (zip_handle_) {
		CloseArchive(zip_handle_);
		}
		}

		bool FilePackage::ReadFullyAtOffset(uint8_t* buffer, uint64_t byte_count, uint64_t offset) {
		if (byte_count > package_size_ \|\| offset > package_size_ - byte_count) {
		LOG(ERROR) << "Out of bound read, offset: " << offset << ", size: " << byte_count
		<< ", total package_size: " << package_size_;
		return false;
		}

		if (!android::base::ReadFullyAtOffset(fd_.get(), buffer, byte_count, offset)) {
		PLOG(ERROR) << "Failed to read " << byte_count << " bytes data at offset " << offset;
		return false;
		}

		return true;
		}

		bool FilePackage::UpdateHashAtOffset(const std::vector<HasherUpdateCallback>& hashers,
		uint64_t start, uint64_t length) {
		if (length > package_size_ \|\| start > package_size_ - length) {
		LOG(ERROR) << "Out of bound read, offset: " << start << ", size: " << length
		<< ", total package_size: " << package_size_;
		return false;
		}

		uint64_t so_far = 0;
		while (so_far < length) {
		uint64_t read_size = std::min<uint64_t>(length - so_far, 16 * MiB);
		std::vector<uint8_t> buffer(read_size);
		if (!ReadFullyAtOffset(buffer.data(), read_size, start + so_far)) {
		return false;
		}

		for (const auto& hasher : hashers) {
		hasher(buffer.data(), read_size);
		}
		so_far += read_size;
		}

		return true;
		}

		ZipArchiveHandle FilePackage::GetZipArchiveHandle() {
		if (zip_handle_) {
		return zip_handle_;
		}

		if (auto err = OpenArchiveFd(fd_.get(), path_.c_str(), &zip_handle_); err != 0) {
		LOG(ERROR) << "Can't open package" << path_ << " : " << ErrorCodeString(err);
		return nullptr;
		}

		return zip_handle_;
		}

package.h

+7 −6

Original line number	Diff line number	Diff line
		@@ -32,6 +32,13 @@
		// interface for both packages loaded in memory and packages read from fd.
		class Package : public VerifierInterface {
		public:
		static std::unique_ptr<Package> CreateMemoryPackage(
		const std::string& path, const std::function<void(float)>& set_progress);
		static std::unique_ptr<Package> CreateMemoryPackage(
		std::vector<uint8_t> content, const std::function<void(float)>& set_progress);
		static std::unique_ptr<Package> CreateFilePackage(const std::string& path,
		const std::function<void(float)>& set_progress);

		virtual ~Package() = default;

		// Opens the package as a zip file and returns the ZipArchiveHandle.
		@@ -40,12 +47,6 @@ class Package : public VerifierInterface {
		// Updates the progress in fraction during package verification.
		void SetProgress(float progress) override;

		static std::unique_ptr<Package> CreateMemoryPackage(
		const std::string& path, const std::function<void(float)>& set_progress);

		static std::unique_ptr<Package> CreateMemoryPackage(
		std::vector<uint8_t> content, const std::function<void(float)>& set_progress);

		protected:
		// An optional function to update the progress.
		std::function<void(float)> set_progress_;

tests/Android.bp

+2 −0

Original line number	Diff line number	Diff line
		@@ -77,6 +77,7 @@ librecovery_static_libs = [
		"librecovery",
		"librecovery_fastboot",
		"libminui",
		"libpackage",
		"libverifier",
		"libotautil",

		@@ -117,6 +118,7 @@ cc_test {
		static_libs: libapplypatch_static_libs + [
		"librecovery_ui",
		"libminui",
		"libpackage",
		"libverifier",
		"libotautil",
		"libupdater",

tests/component/verifier_test.cpp

+10 −5

Original line number	Diff line number	Diff line
		@@ -240,8 +240,10 @@ class VerifierTest : public testing::TestWithParam<std::vector<std::string>> {
		void SetUp() override {
		std::vector<std::string> args = GetParam();
		std::string path = from_testdata_base(args[0]);
		package_ = Package::CreateMemoryPackage(path, nullptr);
		ASSERT_NE(nullptr, package_);
		memory_package_ = Package::CreateMemoryPackage(path, nullptr);
		ASSERT_NE(nullptr, memory_package_);
		file_package_ = Package::CreateFilePackage(path, nullptr);
		ASSERT_NE(nullptr, file_package_);

		for (auto it = ++args.cbegin(); it != args.cend(); ++it) {
		std::string public_key_file = from_testdata_base("testkey_" + *it + ".x509.pem");
		@@ -250,7 +252,8 @@ class VerifierTest : public testing::TestWithParam<std::vector<std::string>> {
		}
		}

		std::unique_ptr<Package> package_;
		std::unique_ptr<Package> memory_package_;
		std::unique_ptr<Package> file_package_;
		std::vector<Certificate> certs_;
		};

		@@ -304,11 +307,13 @@ TEST(VerifierTest, BadPackage_SignatureStartOutOfBounds) {
		}

		TEST_P(VerifierSuccessTest, VerifySucceed) {
		ASSERT_EQ(VERIFY_SUCCESS, verify_file(package_.get(), certs_));
		ASSERT_EQ(VERIFY_SUCCESS, verify_file(memory_package_.get(), certs_));
		ASSERT_EQ(VERIFY_SUCCESS, verify_file(file_package_.get(), certs_));
		}

		TEST_P(VerifierFailureTest, VerifyFailure) {
		ASSERT_EQ(VERIFY_FAILURE, verify_file(package_.get(), certs_));
		ASSERT_EQ(VERIFY_FAILURE, verify_file(memory_package_.get(), certs_));
		ASSERT_EQ(VERIFY_FAILURE, verify_file(file_package_.get(), certs_));
		}

		INSTANTIATE_TEST_CASE_P(SingleKeySuccess, VerifierSuccessTest,