Misc/Custom Parsers (DIS-2162)

dissect/target/filesystems/config.py

@@ -247,10 +247,14 @@ def open(self) -> BinaryIO:
         Returns:
             A file-like object holding a byte representation of :attr:`parser_items`.
         """
+
         if isinstance(self.parser_items, ConfigurationParser):
             # Currently trying to open the underlying entry
             return self.entry.open()
 
+        if isinstance(self.parser_items, bytes):
+            return io.BytesIO(self.parser_items)
+
         output_data = self._write_value_mapping(self.parser_items)
         return io.BytesIO(bytes(output_data, "utf-8"))
 

dissect/target/helpers/configutil.py

@@ -161,7 +161,7 @@ def parse_file(self, fh: TextIO) -> None:
     def get(self, item: str, default: Optional[Any] = None) -> Any:
         return self.parsed_data.get(item, default)
 
-    def read_file(self, fh: TextIO) -> None:
+    def read_file(self, fh: TextIO | BytesIO) -> None:
         """Parse a configuration file.
 
         Raises:
@@ -303,6 +303,14 @@ def parse_file(self, fh: TextIO) -> None:
         self.parsed_data = {"content": fh.read(), "size": str(fh.tell())}
 
 
+class Bin(ConfigurationParser):
+
+    """Read the file into ``binary`` and show the number of bytes read"""
+
+    def parse_file(self, fh: BytesIO) -> None:
+        self.parsed_data = {"binary": fh.read(), "size": fh.tell()}
+
+
 class Xml(ConfigurationParser):
     """Parses an XML file. Ignores any constructor parameters passed from ``ConfigurationParser`."""
 
@@ -759,6 +767,7 @@ def create_parser(self, options: Optional[ParserOptions] = None) -> Configuratio
     "nsswitch.conf": ParserConfig(Default, separator=(":",)),
     "lsb-release": ParserConfig(Default),
     "catalog": ParserConfig(Xml),
+    "ld.so.cache": ParserConfig(Bin),
     "fstab": ParserConfig(
         CSVish,
         separator=(r"\s",),
@@ -832,9 +841,11 @@ def parse_config(
     parser_type = _select_parser(entry, hint)
 
     parser = parser_type.create_parser(options)
-
     with entry.open() as fh:
-        open_file = io.TextIOWrapper(fh, encoding="utf-8")
+        if not isinstance(parser, Bin):
+            open_file = io.TextIOWrapper(fh, encoding="utf-8")
+        else:
+            open_file = io.BytesIO(fh.read())
         parser.read_file(open_file)
 
     return parser