Split payload metadata logic from DeltaPerformer into its own class.
DeltaPerformer have code for both parsing payload and performing
operations. This change moves parsing payload header and validating
metadata signature to a new class PayloadMetadata so that
DeltaPerformer can focus on performing.
We will also have new code in another class that will use the new
PayloadMetadata class to parse payload metadata.
Bug: 65283633
Test: update_engine_unittests
Change-Id: Ie20b84713a0c66867a1de9d3d0cc29d0189b3c97
diff --git a/payload_consumer/payload_constants.cc b/payload_consumer/payload_constants.cc
index ad193a0..9338d29 100644
--- a/payload_consumer/payload_constants.cc
+++ b/payload_consumer/payload_constants.cc
@@ -27,6 +27,8 @@
const uint32_t kOpSrcHashMinorPayloadVersion = 3;
const uint32_t kPuffdiffMinorPayloadVersion = 4;
+const uint64_t kMaxPayloadHeaderSize = 24;
+
const char kLegacyPartitionNameKernel[] = "boot";
const char kLegacyPartitionNameRoot[] = "system";