Implement FilePackage class
This is another implementation of the Package class. And we will later
need it when reading the package from FUSE.
Bug: 127071893
Test: unit tests pass, sideload a file package on sailfish
Change-Id: I3de5d5ef60b29c8b73517d6de3498459d7d95975
diff --git a/package.cpp b/package.cpp
index d404278..6c7289f 100644
--- a/package.cpp
+++ b/package.cpp
@@ -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 @@
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 @@
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 @@
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_;
+}