zipfile: Support for extended_*time attributes

zipinfo now supports attributes like extended_atime,
extended_ctime, extended_mtime

Signed-off-by: Abhijeet Kasurde <akasurde@redhat.com>

Author: Akasurde

Doc/library/zipfile.rst

@@ -890,6 +890,23 @@ Instances have the following methods and attributes:
 
    Size of the uncompressed file.
 
+.. attribute:: ZipInfo.extended_mtime
+
+   Extended modified timestamp of the uncompressed file.
+
+   .. versionadded:: 3.14
+
+.. attribute:: ZipInfo.extended_atime
+
+   Extended access timestamp of the uncompressed file.
+
+   .. versionadded:: 3.14
+
+.. attribute:: ZipInfo.extended_ctime
+
+   Extended changed timestamp of the uncompressed file.
+
+   .. versionadded:: 3.14
 
 .. _zipfile-commandline:
 .. program:: zipfile

Lib/test/test_zipfile/test_core.py

@@ -2227,6 +2227,10 @@ def test_create_empty_zipinfo_default_attributes(self):
         self.assertEqual(zi.file_size, 0)
         self.assertEqual(zi.compress_size, 0)
 
+        self.assertEqual(zi.extended_mtime, None)
+        self.assertEqual(zi.extended_atime, None)
+        self.assertEqual(zi.extended_ctime, None)
+
     def test_zipfile_with_short_extra_field(self):
         """If an extra field in the header is less than 4 bytes, skip it."""
         zipdata = (

Lib/zipfile/__init__.py

@@ -396,6 +396,9 @@ class ZipInfo:
         'file_size',
         '_raw_time',
         '_end_offset',
+        'extended_mtime',
+        'extended_atime',
+        'extended_ctime',
     )
 
     def __init__(self, filename="NoName", date_time=(1980,1,1,0,0,0)):
@@ -431,6 +434,9 @@ def __init__(self, filename="NoName", date_time=(1980,1,1,0,0,0)):
         self.compress_size = 0          # Size of the compressed file
         self.file_size = 0              # Size of the uncompressed file
         self._end_offset = None         # Start of the next local header or central directory
+        self.extended_mtime = None      # Extended access timestamp
+        self.extended_atime = None      # Extended modified timestamp
+        self.extended_ctime = None      # Extended changed timestamp
         # Other attributes are set by class ZipFile:
         # header_offset         Byte offset to the file header
         # CRC                   CRC-32 of the uncompressed file
@@ -563,6 +569,14 @@ def _decodeExtra(self, filename_crc):
                 except UnicodeDecodeError as e:
                     raise BadZipFile('Corrupt unicode path extra field (0x7075): invalid utf-8 bytes') from e
 
+            elif tp == 0x5455:
+                flags = extra[4]
+                if flags & 0x1 and ln >= 5:
+                    self.extended_mtime = int.from_bytes(extra[5:9], "little")
+                if flags & 0x2 and ln >= 9:
+                    self.extended_atime = int.from_bytes(extra[9:13], "little")
+                if flags & 0x4 and ln >= 13:
+                    self.extended_ctime = int.from_bytes(extra[13:17], "little")
             extra = extra[ln+4:]
 
     @classmethod