comply with xdg base directory spec by using XDG_CACHE_HOME if its set

volatility3/framework/constants/__init__.py

@@ -6,6 +6,7 @@
 Stores all the constant values that are generally fixed throughout
 volatility This includes default scanning block sizes, etc.
 """
+
 import enum
 import os.path
 import sys
@@ -65,7 +66,10 @@ LOGLEVEL_VVV = 7
 LOGLEVEL_VVVV = 6
 """Logging level for four levels of detail: -vvvvvv"""
 
-CACHE_PATH = os.path.join(os.path.expanduser("~"), ".cache", "volatility3")
+
+CACHE_PATH = os.path.join(
+    os.environ.get("XDG_CACHE_HOME") or os.path.expanduser("~/.cache"), "volatility3"
+)
 """Default path to store cached data"""
 
 SQLITE_CACHE_PERIOD = "-3 days"