Commit Graph

88 Commits

Author SHA1 Message Date
Nadeem Vawda 0cc4fd9df7 Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail
attribute when called without a max_length argument.
2011-05-14 14:29:07 +02:00
Antoine Pitrou fc3bfad2e0 Issue #8681: Make the zlib module's error messages more informative when
the zlib itself doesn't give any detailed explanation.
2010-05-11 23:42:28 +00:00
Antoine Pitrou c83ea137d7 Untabify C files. Will watch buildbots. 2010-05-09 14:46:46 +00:00
Antoine Pitrou 3843cd8e86 Issue #8571: Fix an internal error when compressing or decompressing a
chunk larger than 1GB with the zlib module's compressor and decompressor
objects.
2010-05-07 16:50:34 +00:00
Gregory P. Smith dd96db63f6 This reverts r63675 based on the discussion in this thread:
http://mail.python.org/pipermail/python-dev/2008-June/079988.html

Python 2.6 should stick with PyString_* in its codebase.  The PyBytes_* names
in the spirit of 3.0 are available via a #define only.  See the email thread.
2008-06-09 04:58:54 +00:00
Christian Heimes 593daf545b Renamed PyString to PyBytes 2008-05-26 12:51:38 +00:00
Gregory P. Smith 79e42a0e08 Fix zlib crash from zlib.decompressobj().flush(val) when val was not positive.
It tried to allocate negative or zero memory.  That fails.
2008-04-09 00:25:17 +00:00
Gregory P. Smith 1fa588e14f Use a 32-bit unsigned int here, a long is not needed. 2008-03-25 07:31:28 +00:00
Gregory P. Smith be446b4ab7 replace calls to get the initial values with the raw constants. 2008-03-23 22:14:38 +00:00
Gregory P. Smith 73f57b0c05 Revert r61779 - It undid correct code and caused test_zlib to fail on all
platforms with a 64-bit long.

The Alpha/Tru64 test problem is a problem in either tarfile or test_tarfile,
not zlib.

crc32 and adler32 return 32-bit values.  by using a long thats larger than
32-bits in these functions they were prevented from wrapping around to their
signed 32-bit value that we want them to return in python 2.x.
2008-03-23 20:31:23 +00:00
Neal Norwitz acbd6420e3 Fix test_tarfile failures on Alpha (Tru64). The problem was caused in r61449
which made the return value signed.  On the Alpha that also lost data
since sizeof(int) != sizeof(long) and apparently adler32/crc32 return
64 bits of data.  This change keeps the signedness and continues to store the
data in a long rather than an int as was the case before r61449.
2008-03-23 05:08:37 +00:00
Gregory P. Smith f48f9d38c0 Force zlib.crc32 and zlib.adler32 to return a signed integer on all platforms
regardless of the native sizeof(long) used in the integer object.

This somewhat odd behavior of returning a signed is maintained in 2.x for
compatibility reasons of always returning an integer rather than a long object.

Fixes Issue1202 for Python 2.6
2008-03-17 18:48:05 +00:00
Christian Heimes e93237dfcc #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT. Macros for b/w compatibility are available. 2007-12-19 02:37:44 +00:00
Christian Heimes 901071bde5 Fixed #1372: zlibmodule.c: int overflow in PyZlib_decompress 2007-11-21 00:46:21 +00:00
Martin v. Löwis 6819210b9e PEP 3123: Provide forward compatibility with Python 3.0, while keeping
backwards compatibility. Add Py_Refcnt, Py_Type, Py_Size, and
PyVarObject_HEAD_INIT.
2007-07-21 06:55:02 +00:00
Neal Norwitz 6e73aaab47 Patch #1503046, Conditional compilation of zlib.(de)compressobj.copy
copy is only in newer versions of zlib.  This should allow zlibmodule
to work with older versions like the Tru64 buildbot.
2006-06-12 03:33:09 +00:00
Tim Peters 402cc242f0 PyZlib_copy(), PyZlib_uncopy(): Repair leaks on the normal-case path. 2006-05-17 01:30:11 +00:00
Georg Brandl 8d3342b489 Patch #1435422: zlib's compress and decompress objects now have a
copy() method.
2006-05-16 07:38:27 +00:00
Georg Brandl 22a9dc889d Patch #1459631: documnent zlib.Decompress.flush() length parameter. 2006-04-01 07:39:41 +00:00
Neal Norwitz 1ac754fa10 Check return result from Py_InitModule*(). This API can fail.
Probably should be backported.
2006-01-19 06:09:39 +00:00
Andrew M. Kuchling bb7e800506 [Patch #1350573] zlib.crc32 doesn't handle 0xffffffff seed. Add tests and bugfix. Bug reported by John Schmidt; bugfix by Danny Yoo. 2005-11-22 15:32:28 +00:00
Andrew M. Kuchling 3b585b30c0 [Bug #1083110] calling .flush() on decompress objects causes a segfault due to an uninitialized pointer: fixes the problem and adds a test case 2004-12-28 20:10:48 +00:00
Guido van Rossum 7d9ea5013f - Thanks to Scott David Daniels, a subtle bug in how the zlib
extension implemented flush() was fixed.  Scott also rewrite the
  zlib test suite using the unittest module.  (SF bug #640230 and
  patch #678531.)

Backport candidate I think.
2003-02-03 20:45:52 +00:00
Mark Hammond 62b1ab1b31 Replace DL_IMPORT with PyMODINIT_FUNC and remove "/export:init..." link
command line for Windows builds.  This should allow MSVC to import and
build the Python MSVC6 project files without error.
2002-07-23 06:31:15 +00:00
Tim Peters 0c32279626 Removed more stray instances of statichere, but left _sre.c alone. 2002-07-17 16:49:03 +00:00
Jeremy Hylton 938ace69a0 staticforward bites the dust.
The staticforward define was needed to support certain broken C
compilers (notably SCO ODT 3.0, perhaps early AIX as well) botched the
static keyword when it was used with a forward declaration of a static
initialized structure.  Standard C allows the forward declaration with
static, and we've decided to stop catering to broken C compilers.  (In
fact, we expect that the compilers are all fixed eight years later.)

I'm leaving staticforward and statichere defined in object.h as
static.  This is only for backwards compatibility with C extensions
that might still use it.

XXX I haven't updated the documentation.
2002-07-17 16:30:39 +00:00
Martin v. Löwis 14f8b4cfcb Patch #568124: Add doc string macros. 2002-06-13 20:33:02 +00:00
Tim Peters 5de9842b34 Repair widespread misuse of _PyString_Resize. Since it's clear people
don't understand how this function works, also beefed up the docs.  The
most common usage error is of this form (often spread out across gotos):

	if (_PyString_Resize(&s, n) < 0) {
		Py_DECREF(s);
		s = NULL;
		goto outtahere;
	}

The error is that if _PyString_Resize runs out of memory, it automatically
decrefs the input string object s (which also deallocates it, since its
refcount must be 1 upon entry), and sets s to NULL.  So if the "if"
branch ever triggers, it's an error to call Py_DECREF(s):  s is already
NULL!  A correct way to write the above is the simpler (and intended)

	if (_PyString_Resize(&s, n) < 0)
		goto outtahere;

Bugfix candidate.
2002-04-27 18:44:32 +00:00
Jeremy Hylton c72737e7b6 Fix SF #544995 (zlib crash on second flush call)
Bug fix by mhammond.

Bug fix candidate for 2.2, not present in 2.1.
2002-04-19 14:37:07 +00:00
Fred Drake 4baedc1d9b Use the PyModule_Add*() APIs instead of manipulating the module dict
directly.
2002-04-01 14:53:37 +00:00
Sjoerd Mullender 556a938d10 Changed C++ comment into standard comment. 2002-03-11 09:20:47 +00:00
Guido van Rossum 146483964e Patch supplied by Burton Radons for his own SF bug #487390: Modifying
type.__module__ behavior.

This adds the module name and a dot in front of the type name in every
type object initializer, except for built-in types (and those that
already had this).  Note that it touches lots of Mac modules -- I have
no way to test these but the changes look right.  Apologies if they're
not.  This also touches the weakref docs, which contains a sample type
object initializer.  It also touches the mmap test output, because the
mmap type's repr is included in that output.  It touches object.h to
put the correct description in a comment.
2001-12-08 18:02:58 +00:00
Jack Jansen 72af01aac6 Added missing cast. 2001-10-23 22:29:06 +00:00
Jeremy Hylton 771f9146d5 Remove unused convenience routine. 2001-10-17 13:32:02 +00:00
Tim Peters adbd35bbcc Simplify and regularize docstrings. Also reformat so that each docstring
line fits in reasonable screen width.
2001-10-17 04:16:15 +00:00
Tim Peters 977e540e4b Trimmed trailing whitespace. 2001-10-17 03:57:20 +00:00
Tim Peters b1a37c0196 Removed more comments that didn't make much sense.
Made the presence/absence of a semicolon after macros consistent.
2001-10-17 03:56:45 +00:00
Tim Peters 6605c64c83 Removed obsolete comments about confused string refcount tricks (Jeremy
removed the tricks).

Changed the ENTER/LEAVE_ZLIB macros so as not to create a new block (a
new block is neither necessary nor helpful).
2001-10-17 03:43:54 +00:00
Jeremy Hylton ba3dd9990f Undo needless INCREF chicanery introduced by SF patch #450702.
Apparently this patch (rev 2.41) replaced all the good old "s#"
    formats in PyArg_ParseTuple() with "S".  Then it did
    PyString_FromStringAndSize() to get back the values setup by the
    "s#" format.  It also incref'd and decref'd the string obtained by
    "S" even though the argument tuple had a reference to it.

Replace PyString_AsString() calls with PyString_AS_STRING().

    A good rule of thumb -- if you never check the return value of
    PyString_AsString() to see if it's NULL, you ought to be using the
    macro <wink>.
2001-10-16 23:26:08 +00:00
Jeremy Hylton 9d620d018c Simplify and fix error handling for most cases.
Many functions used a local variable called return_error, which was
initialized to zero.  If an error occurred, it was set to true.  Most
of the code paths checked were only executed if return_error was
false.  goto is clearer.

The code also seemed to be written under the curious assumption that
calling Py_DECREF() on a local variable would assign the variable to
NULL.  As a result, more of the error-exit code paths returned an
object that had a reference count of zero instead of just returning
NULL.  Fixed the code to explicitly assign NULL after the DECREF.

A bit more reformatting, but not much.

XXX Need a much better test suite for zlib, since it the current tests
don't exercise any of this broken code.
2001-10-16 23:02:32 +00:00
Jeremy Hylton 4990000077 More reformatting. 2001-10-16 21:59:35 +00:00
Jeremy Hylton 0965e084cd Add zlib_error() helper.
It sets a ZlibError exception, using the msg from the z_stream pointer
if one is available.
2001-10-16 21:56:09 +00:00
Jeremy Hylton 9bc9d66eb1 Remove many calls to set MemoryError exceptions.
When PyString_FromStringAndSize() and _PyString_Resize() fail, they
set an exception.  There's no need to set a new exception.
2001-10-16 21:23:58 +00:00
Jeremy Hylton 9714f99d60 Reformat!
Consistently indent 4 spaces.
Use whitespace around operators.
Put braces in the right places.
2001-10-16 21:19:45 +00:00
Jeremy Hylton 511e2cacc4 [ #403753 ] zlib decompress; uncontrollable memory usage
Mostly by Toby Dickenson and Titus Brown.

Add an optional argument to a decompression object's decompress()
method.  The argument specifies the maximum length of the return
value.  If the uncompressed data exceeds this length, the excess data
is stored as the unconsumed_tail attribute.  (Not to be confused with
unused_data, which is a separate issue.)

Difference from SF patch: Default value for unconsumed_tail is ""
rather than None.  It's simpler if the attribute is always a string.
2001-10-16 20:39:49 +00:00
Martin v. Löwis 1dbce44b91 Update URL. Fixes bug #468118. 2001-10-09 10:54:31 +00:00
Martin v. Löwis caef93d82c Silence warnings about passing unsigned char** as char**. 2001-09-08 16:23:34 +00:00
Martin v. Löwis 3bd8c1ee47 Patch #450702: allow threads when calling into zlib, protect usage of
the module in multiple threads with a global lock.
2001-09-07 16:27:31 +00:00
Andrew M. Kuchling a1a690fa9c Patch #103926: fix two warnings from Tru64's compiler 2001-02-22 15:52:55 +00:00
Andrew M. Kuchling 9aff4a2ad0 Patch #103373 from Donovan Baarda: This patch:
* fixes the zlib decompress sync flush bug as reported in bug #124981
  * avoids repeat calls to (in|de)flateEnd when destroying (de)compression
    objects
  * raises exception when allocating unused_data fails
  * fixes memory leak when allocating unused_data fails
  * raises exception when allocating decompress data fails
  * removes vestigial code from decompress flush now that decompression
    returns all available data
  * tidies code so object compress/decompress/flush routines are consistent
2001-02-21 02:15:56 +00:00