As described in RFC 1952, section 2.3.1, the XFL (eXtra FLags) byte of a
gzip member header should indicate whether the DEFLATE algorithm was
tuned for speed or compression ratio. Prior to this patch, archives
emitted by the `gzip` module always indicated maximum compression.
(cherry picked from commit eab3b3f1c6)
Co-authored-by: William Chargin <wchargin@gmail.com>
Without setting mtime, time.time() will be used as the timestamp which will
end up in the compressed data and each invocation of the compress() function
will vary over time.
The underlying zlib library stores sizes in “unsigned int”. The corresponding
Python parameters are all sizes of buffers filled in by zlib, so it is okay
to reduce higher values to the UINT_MAX internal cap. OverflowError is still
raised for sizes that do not fit in Py_ssize_t.
Sizes are now limited to Py_ssize_t rather than unsigned long, because Python
byte strings cannot be larger than Py_ssize_t. Previously this could result
in a SystemError on 32-bit platforms.
This resolves a regression in the gzip module when reading more than UINT_MAX
or LONG_MAX bytes in one call, introduced by revision 62723172412c.
GzipFile, BZ2File or LZMAFile. This defeats denial of service attacks
using compressed bombs (i.e. compressed payloads which decompress to a huge
size).
Patch by Martin Panter and Nikolaus Rath.
requires them. Disable executable bits and shebang lines in test and
benchmark files in order to prevent using a random system python, and in
source files of modules which don't provide command line interface. Fixed
shebang lines in the unittestgui and checkpip scripts.
requires them. Disable executable bits and shebang lines in test and
benchmark files in order to prevent using a random system python, and in
source files of modules which don't provide command line interface. Fixed
shebang line to use python3 executable in the unittestgui script.
svn+ssh://pythondev@svn.python.org/python/trunk
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r77288 | antoine.pitrou | 2010-01-03 23:29:56 +0100 (dim., 03 janv. 2010) | 5 lines
Issue #7471: Improve the performance of GzipFile's buffering mechanism,
and make it implement the `io.BufferedIOBase` ABC to allow for further
speedups by wrapping it in an `io.BufferedReader`. Patch by Nir Aides.
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svn+ssh://pythondev@svn.python.org/python/trunk
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r68319 | antoine.pitrou | 2009-01-04 22:29:23 +0100 (dim., 04 janv. 2009) | 3 lines
Issue #4272: Add an optional argument to the GzipFile constructor to override the timestamp in the gzip stream.
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svn+ssh://pythondev@svn.python.org/python/trunk
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r63412 | georg.brandl | 2008-05-17 19:57:01 +0200 (Sat, 17 May 2008) | 2 lines
#961805: fix Edit.text_modified().
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r63445 | georg.brandl | 2008-05-18 10:52:59 +0200 (Sun, 18 May 2008) | 2 lines
GHOP #180 by Michael Schneider: add examples to the socketserver documentation.
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r63446 | georg.brandl | 2008-05-18 11:12:20 +0200 (Sun, 18 May 2008) | 2 lines
GHOP #134, #171, #137: unit tests for the three HTTPServer modules.
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r63447 | georg.brandl | 2008-05-18 12:39:26 +0200 (Sun, 18 May 2008) | 3 lines
Take namedtuple item names only from ascii_letters (this blew up on OSX),
and make sure there are no duplicate names.
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r63449 | georg.brandl | 2008-05-18 13:46:51 +0200 (Sun, 18 May 2008) | 2 lines
GHOP #217: add support for compiling Python with coverage checking enabled.
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r63450 | georg.brandl | 2008-05-18 13:52:36 +0200 (Sun, 18 May 2008) | 2 lines
GHOP #257: test distutils' build_ext command, written by Josip Dzolonga.
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r63452 | georg.brandl | 2008-05-18 15:34:06 +0200 (Sun, 18 May 2008) | 2 lines
Add GHOP students.
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r63454 | georg.brandl | 2008-05-18 18:32:48 +0200 (Sun, 18 May 2008) | 2 lines
GHOP #121: improve test_pydoc, by Benjamin Peterson.
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r63459 | benjamin.peterson | 2008-05-18 22:48:07 +0200 (Sun, 18 May 2008) | 2 lines
bring test_pydoc up to my high standards (now that I have them)
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r63463 | georg.brandl | 2008-05-18 23:10:19 +0200 (Sun, 18 May 2008) | 2 lines
Fix test_pyclbr after another platform-dependent function was added to urllib.
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r63465 | benjamin.peterson | 2008-05-19 01:07:07 +0200 (Mon, 19 May 2008) | 2 lines
change some imports in tests so they will not be skipped in 3.0
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r63470 | georg.brandl | 2008-05-19 18:47:25 +0200 (Mon, 19 May 2008) | 2 lines
test_httpservers has unpredictable refcount behavior.
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r63483 | georg.brandl | 2008-05-20 08:15:36 +0200 (Tue, 20 May 2008) | 2 lines
Activate two more test cases in test_httpservers.
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r63484 | georg.brandl | 2008-05-20 08:47:31 +0200 (Tue, 20 May 2008) | 2 lines
Argh, this is the *actual* test that works under Windows.
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r63496 | georg.brandl | 2008-05-20 10:07:36 +0200 (Tue, 20 May 2008) | 2 lines
Improve diffing logic and output for test_pydoc.
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r63497 | georg.brandl | 2008-05-20 10:10:03 +0200 (Tue, 20 May 2008) | 2 lines
Use inspect.getabsfile() to get the documented module's filename.
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r63499 | georg.brandl | 2008-05-20 10:25:48 +0200 (Tue, 20 May 2008) | 3 lines
Patch #1775025: allow opening zipfile members via ZipInfo instances.
Patch by Graham Horler.
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r63500 | georg.brandl | 2008-05-20 10:40:43 +0200 (Tue, 20 May 2008) | 2 lines
#2592: delegate nb_index and the floor/truediv slots in weakref.proxy.
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r63501 | georg.brandl | 2008-05-20 10:48:34 +0200 (Tue, 20 May 2008) | 2 lines
#615772: raise a more explicit error from Tkinter.Misc.__contains__.
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r63530 | benjamin.peterson | 2008-05-22 02:57:02 +0200 (Thu, 22 May 2008) | 2 lines
use more specific asserts in test_opcode
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r63531 | benjamin.peterson | 2008-05-22 03:02:23 +0200 (Thu, 22 May 2008) | 2 lines
remove redundant invocation of json doctests
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r63540 | benjamin.peterson | 2008-05-23 01:09:26 +0200 (Fri, 23 May 2008) | 3 lines
fix test_pydoc so it works on make installed Python installations
Also let it pass when invoked directly
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r63614 | georg.brandl | 2008-05-25 10:07:37 +0200 (Sun, 25 May 2008) | 2 lines
#2959: allow multiple close() calls for GzipFile.
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Miss Islington (bot)
Zackery Spytz
Gregory P. Smith
guoci
Stéphane Wirtel
Serhiy Storchaka
Berker Peksag
Martin Panter
Antoine Pitrou
Ned Deily
Nadeem Vawda
Georg Brandl
Ezio Melotti
Brian Curtin
Benjamin Peterson