Add maximum timestamp to the payload.
Added a new field max_timestamp in the protobuf, from now on
update_engine will reject any payload without this field.
If the OS build timestamp is newer than the max_timestamp, the payload
will also be rejected to prevent downgrade.
Bug: 36232423
Test: update_engine_unittests
Merged-In: Ib20f5f35aaf41165013bada02bc8720917358237
Change-Id: Ib20f5f35aaf41165013bada02bc8720917358237
diff --git a/common/hardware_interface.h b/common/hardware_interface.h
index 316ad3d..c9e2f85 100644
--- a/common/hardware_interface.h
+++ b/common/hardware_interface.h
@@ -17,6 +17,8 @@
#ifndef UPDATE_ENGINE_COMMON_HARDWARE_INTERFACE_H_
#define UPDATE_ENGINE_COMMON_HARDWARE_INTERFACE_H_
+#include <stdint.h>
+
#include <string>
#include <vector>
@@ -89,6 +91,9 @@
// powerwash cycles. In case of an error, such as no directory available,
// returns false.
virtual bool GetPowerwashSafeDirectory(base::FilePath* path) const = 0;
+
+ // Returns the timestamp of the current OS build.
+ virtual int64_t GetBuildTimestamp() const = 0;
};
} // namespace chromeos_update_engine
