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-rw-r--r--updater/build_info.cpp126
1 files changed, 126 insertions, 0 deletions
diff --git a/updater/build_info.cpp b/updater/build_info.cpp
new file mode 100644
index 000000000..8e87bd3e5
--- /dev/null
+++ b/updater/build_info.cpp
@@ -0,0 +1,126 @@
+/*
+ * Copyright (C) 2019 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 "updater/build_info.h"
+
+#include <set>
+#include <vector>
+
+#include <android-base/logging.h>
+#include <android-base/stringprintf.h>
+#include <android-base/strings.h>
+
+#include "updater/target_files.h"
+
+bool BuildInfo::ParseTargetFile(const std::string_view target_file_path, bool extracted_input) {
+ TargetFile target_file(std::string(target_file_path), extracted_input);
+ if (!target_file.Open()) {
+ return false;
+ }
+
+ if (!target_file.GetBuildProps(&build_props_)) {
+ return false;
+ }
+
+ std::vector<FstabInfo> fstab_info_list;
+ if (!target_file.ParseFstabInfo(&fstab_info_list)) {
+ return false;
+ }
+
+ for (const auto& fstab_info : fstab_info_list) {
+ for (const auto& directory : { "IMAGES", "RADIO" }) {
+ std::string entry_name = directory + fstab_info.mount_point + ".img";
+ if (!target_file.EntryExists(entry_name)) {
+ LOG(WARNING) << "Failed to find the image entry in the target file: " << entry_name;
+ continue;
+ }
+
+ temp_files_.emplace_back(work_dir_);
+ auto& image_file = temp_files_.back();
+ if (!target_file.ExtractImage(entry_name, fstab_info, work_dir_, &image_file)) {
+ LOG(ERROR) << "Failed to set up source image files.";
+ return false;
+ }
+
+ LOG(INFO) << "Mounted " << fstab_info.mount_point << "\nMapping: " << fstab_info.blockdev_name
+ << " to " << image_file.path;
+
+ blockdev_map_.emplace(
+ fstab_info.blockdev_name,
+ FakeBlockDevice(fstab_info.blockdev_name, fstab_info.mount_point, image_file.path));
+ break;
+ }
+ }
+
+ return true;
+}
+
+std::string BuildInfo::GetProperty(const std::string_view key,
+ const std::string_view default_value) const {
+ // The logic to parse the ro.product properties should be in line with the generation script.
+ // More details in common.py BuildInfo.GetBuildProp.
+ // TODO(xunchang) handle the oem property and the source order defined in
+ // ro.product.property_source_order
+ const std::set<std::string, std::less<>> ro_product_props = {
+ "ro.product.brand", "ro.product.device", "ro.product.manufacturer", "ro.product.model",
+ "ro.product.name"
+ };
+ const std::vector<std::string> source_order = {
+ "product", "product_services", "odm", "vendor", "system",
+ };
+ if (ro_product_props.find(key) != ro_product_props.end()) {
+ std::string_view key_suffix(key);
+ CHECK(android::base::ConsumePrefix(&key_suffix, "ro.product"));
+ for (const auto& source : source_order) {
+ std::string resolved_key = "ro.product." + source + std::string(key_suffix);
+ if (auto entry = build_props_.find(resolved_key); entry != build_props_.end()) {
+ return entry->second;
+ }
+ }
+ LOG(WARNING) << "Failed to find property: " << key;
+ return std::string(default_value);
+ } else if (key == "ro.build.fingerprint") {
+ // clang-format off
+ return android::base::StringPrintf("%s/%s/%s:%s/%s/%s:%s/%s",
+ GetProperty("ro.product.brand", "").c_str(),
+ GetProperty("ro.product.name", "").c_str(),
+ GetProperty("ro.product.device", "").c_str(),
+ GetProperty("ro.build.version.release", "").c_str(),
+ GetProperty("ro.build.id", "").c_str(),
+ GetProperty("ro.build.version.incremental", "").c_str(),
+ GetProperty("ro.build.type", "").c_str(),
+ GetProperty("ro.build.tags", "").c_str());
+ // clang-format on
+ }
+
+ auto entry = build_props_.find(key);
+ if (entry == build_props_.end()) {
+ LOG(WARNING) << "Failed to find property: " << key;
+ return std::string(default_value);
+ }
+
+ return entry->second;
+}
+
+std::string BuildInfo::FindBlockDeviceName(const std::string_view name) const {
+ auto entry = blockdev_map_.find(name);
+ if (entry == blockdev_map_.end()) {
+ LOG(WARNING) << "Failed to find path to block device " << name;
+ return "";
+ }
+
+ return entry->second.mounted_file_path;
+}