Add the hash_tree_info class in Command
Add hash_tree_info to represent the hash tree computation arguments in
the transfer commands 'compute_hash_tree'. Also add its parsing code in
the Command class.
Bug: 25170618
Test: unit tests pass
Change-Id: Ie8607968377968e8fb3e58d1af0b8ca315e145be
diff --git a/updater/include/private/commands.h b/updater/include/private/commands.h
index 7f9dc79..85b5288 100644
--- a/updater/include/private/commands.h
+++ b/updater/include/private/commands.h
@@ -166,6 +166,50 @@
size_t length_{ 0 };
};
+// The arguments to build a hash tree from blocks on the block device.
+class HashTreeInfo {
+ public:
+ HashTreeInfo() = default;
+
+ HashTreeInfo(RangeSet hash_tree_ranges, RangeSet source_ranges, std::string hash_algorithm,
+ std::string salt_hex, std::string root_hash)
+ : hash_tree_ranges_(std::move(hash_tree_ranges)),
+ source_ranges_(std::move(source_ranges)),
+ hash_algorithm_(std::move(hash_algorithm)),
+ salt_hex_(std::move(salt_hex)),
+ root_hash_(std::move(root_hash)) {}
+
+ const RangeSet& hash_tree_ranges() const {
+ return hash_tree_ranges_;
+ }
+ const RangeSet& source_ranges() const {
+ return source_ranges_;
+ }
+
+ const std::string& hash_algorithm() const {
+ return hash_algorithm_;
+ }
+ const std::string& salt_hex() const {
+ return salt_hex_;
+ }
+ const std::string& root_hash() const {
+ return root_hash_;
+ }
+
+ bool operator==(const HashTreeInfo& other) const {
+ return hash_tree_ranges_ == other.hash_tree_ranges_ && source_ranges_ == other.source_ranges_ &&
+ hash_algorithm_ == other.hash_algorithm_ && salt_hex_ == other.salt_hex_ &&
+ root_hash_ == other.root_hash_;
+ }
+
+ private:
+ RangeSet hash_tree_ranges_;
+ RangeSet source_ranges_;
+ std::string hash_algorithm_;
+ std::string salt_hex_;
+ std::string root_hash_;
+};
+
// Command class holds the info for an update command that performs block-based OTA (BBOTA). Each
// command consists of one or several args, namely TargetInfo, SourceInfo, StashInfo and PatchInfo.
// The currently used BBOTA version is v4.
@@ -248,6 +292,8 @@
source_(std::move(source)),
stash_(std::move(stash)) {}
+ Command(Type type, size_t index, std::string cmdline, HashTreeInfo hash_tree_info);
+
// Parses the given command 'line' into a Command object and returns it. The 'index' is specified
// by the caller to index the object. On parsing error, it returns an empty Command object that
// evaluates to false, and the specific error message will be set in 'err'.
@@ -284,6 +330,10 @@
return stash_;
}
+ const HashTreeInfo& hash_tree_info() const {
+ return hash_tree_info_;
+ }
+
constexpr explicit operator bool() const {
return type_ != Type::LAST;
}
@@ -325,6 +375,8 @@
// The stash info. Only meaningful for STASH and FREE commands. Note that although SourceInfo may
// also load data from stash, such info will be owned and managed by SourceInfo (i.e. in source_).
StashInfo stash_;
+ // The hash_tree info. Only meaningful for COMPUTE_HASH_TREE.
+ HashTreeInfo hash_tree_info_;
};
std::ostream& operator<<(std::ostream& os, const Command& command);