evtx: use a dedicated logger instance, and don't config the logger in the lib

Author: williballenthin

Evtx/Evtx.py

@@ -29,7 +29,7 @@
 from .Nodes import TemplateNode
 from .Nodes import RootNode
 
-logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger(__name__)
 
 
 class InvalidRecordException(ParseException):
@@ -128,7 +128,7 @@ def get_file_header(self):
 
 class FileHeader(Block):
     def __init__(self, buf, offset):
-        logging.debug("FILE HEADER at {}.".format(hex(offset)))
+        logger.debug("FILE HEADER at {}.".format(hex(offset)))
         super(FileHeader, self).__init__(buf, offset)
         self.declare_field("string", "magic", 0x0, length=8)
         self.declare_field("qword",  "oldest_chunk")
@@ -274,7 +274,7 @@ def node(self):
 
 class ChunkHeader(Block):
     def __init__(self, buf, offset):
-        logging.debug("CHUNK HEADER at {}.".format(hex(offset)))
+        logger.debug("CHUNK HEADER at {}.".format(hex(offset)))
         super(ChunkHeader, self).__init__(buf, offset)
         self._strings = None
         self._templates = None
@@ -377,7 +377,7 @@ def _load_templates(self):
                 token = self.unpack_byte(ofs - 10)
                 pointer = self.unpack_dword(ofs - 4)
                 if token != 0x0c or pointer != ofs:
-                    logging.warning("Unexpected token encountered")
+                    logger.warning("Unexpected token encountered")
                     ofs = 0
                     continue
                 template = self.add_template(ofs)
@@ -428,7 +428,7 @@ def records(self):
 
 class Record(Block):
     def __init__(self, buf, offset, chunk):
-        logging.debug("Record at {}.".format(hex(offset)))
+        logger.debug("Record at {}.".format(hex(offset)))
         super(Record, self).__init__(buf, offset)
         self._chunk = chunk