[Python-checkins] cpython (3.2): 3.2 - Fix closes Issue6090 - Raise a ValueError, instead of failing with

senthil.kumaran python-checkins at python.org
Wed Oct 19 19:52:59 CEST 2011


http://hg.python.org/cpython/rev/12f3e86e9041
changeset:   72992:12f3e86e9041
branch:      3.2
parent:      72989:f5bd78b11275
user:        Senthil Kumaran <senthil at uthcode.com>
date:        Thu Oct 20 01:46:00 2011 +0800
summary:
  3.2 - Fix closes Issue6090 - Raise a ValueError, instead of failing with unrelated
exceptions, when a document with timestamp earlier than 1980 is provided to
zipfile. Patch contributed by  Petri Lehtinen.

files:
  Doc/library/zipfile.rst  |   6 +++++-
  Lib/test/test_zipfile.py |  11 +++++++++++
  Lib/zipfile.py           |   4 ++++
  Misc/NEWS                |   3 +++
  4 files changed, 23 insertions(+), 1 deletions(-)


diff --git a/Doc/library/zipfile.rst b/Doc/library/zipfile.rst
--- a/Doc/library/zipfile.rst
+++ b/Doc/library/zipfile.rst
@@ -398,7 +398,7 @@
    +-------+--------------------------+
    | Index | Value                    |
    +=======+==========================+
-   | ``0`` | Year                     |
+   | ``0`` | Year (>= 1980)           |
    +-------+--------------------------+
    | ``1`` | Month (one-based)        |
    +-------+--------------------------+
@@ -411,6 +411,10 @@
    | ``5`` | Seconds (zero-based)     |
    +-------+--------------------------+
 
+   .. note::
+
+      The ZIP file format does not support timestamps before 1980.
+
 
 .. attribute:: ZipInfo.compress_type
 
diff --git a/Lib/test/test_zipfile.py b/Lib/test/test_zipfile.py
--- a/Lib/test/test_zipfile.py
+++ b/Lib/test/test_zipfile.py
@@ -507,6 +507,13 @@
         except zipfile.BadZipFile:
             self.assertTrue(zipfp2.fp is None, 'zipfp is not closed')
 
+    def test_add_file_before_1980(self):
+        # Set atime and mtime to 1970-01-01
+        os.utime(TESTFN, (0, 0))
+        with zipfile.ZipFile(TESTFN2, "w") as zipfp:
+            self.assertRaises(ValueError, zipfp.write, TESTFN)
+
+
     @skipUnless(zlib, "requires zlib")
     def test_unicode_filenames(self):
         # bug #10801
@@ -1053,6 +1060,10 @@
         f.close()
         self.assertRaises(zipfile.BadZipFile, zipfile.ZipFile, TESTFN, 'r')
 
+    def test_create_zipinfo_before_1980(self):
+        self.assertRaises(ValueError,
+                          zipfile.ZipInfo, 'seventies', (1979, 1, 1, 0, 0, 0))
+
     def tearDown(self):
         unlink(TESTFN)
         unlink(TESTFN2)
diff --git a/Lib/zipfile.py b/Lib/zipfile.py
--- a/Lib/zipfile.py
+++ b/Lib/zipfile.py
@@ -300,6 +300,10 @@
 
         self.filename = filename        # Normalized file name
         self.date_time = date_time      # year, month, day, hour, min, sec
+
+        if date_time[0] < 1980:
+            raise ValueError('ZIP does not support timestamps before 1980')
+
         # Standard values:
         self.compress_type = ZIP_STORED # Type of compression for the file
         self.comment = b""              # Comment for each file
diff --git a/Misc/NEWS b/Misc/NEWS
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -54,6 +54,9 @@
 - Issue #12448: smtplib now flushes stdout while running ``python -m smtplib``
   in order to display the prompt correctly.
 
+- Issue #6090: zipfile raises a ValueError when a document with a timestamp
+  earlier than 1980 is provided. Patch contributed by Petri Lehtinen.
+
 - Issue #13194: zlib.compressobj().copy() and zlib.decompressobj().copy() are
   now available on Windows.
 

-- 
Repository URL: http://hg.python.org/cpython


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