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20 Commits

Author SHA1 Message Date
Antoine Pitrou 2dbc6e6bce Issue #23529: Limit the size of decompressed data when reading from 
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.
 2015-04-11 00:31:01 +02:00
Antoine Pitrou 26795baaa8 Issue #15955: Add an option to limit output size when decompressing LZMA data. 
Patch by Nikolaus Rath and Martin Panter.
 2015-01-17 16:22:18 +01:00
Serhiy Storchaka bad1257c96 Issue #22777: Test pickling with all protocols. 2014-12-15 14:03:42 +02:00
Nadeem Vawda ae02d07bc2 Closes #19839: Fix regression in bz2 module's handling of non-bzip2 data at EOF. 
Also fix an analogous bug (not a regression) in the lzma module.
 2013-12-04 23:29:51 +01:00
Nadeem Vawda 9c72ebc96b #19839: Fix lzma module's handling of non-lzma data at EOF. 2013-12-04 23:03:49 +01:00
Nadeem Vawda e6514f533e #19395: Raise exception when pickling a (BZ2|LZMA)(Compressor|Decompressor). 
The underlying C libraries provide no mechanism for serializing compressor and
decompressor objects, so actually pickling these classes is impractical.
Previously, these objects would be pickled without error, but attempting to use
a deserialized instance would segfault the interpreter.
 2013-10-28 21:41:24 +01:00
Nadeem Vawda 3797065ac5 #19395: Raise exception when pickling a (BZ2|LZMA)(Compressor|Decompressor). 
The underlying C libraries provide no mechanism for serializing compressor and
decompressor objects, so actually pickling these classes is impractical.
Previously, these objects would be pickled without error, but attempting to use
a deserialized instance would segfault the interpreter.
 2013-10-28 21:35:23 +01:00
Nadeem Vawda 42ca98217c Issue #19201: Add support for the 'x' mode to the lzma module. 
Patch by Tim Heaney and Vajrasky Kok.
 2013-10-19 00:06:19 +02:00
Georg Brandl b3bd624a55 Back out patch for #1159051, which caused backwards compatibility problems. 2013-05-12 11:57:26 +02:00
Serhiy Storchaka 70ea7fa6e5 Fix accidental non-breakable spaces (U+00A0). 2013-02-08 11:24:16 +02:00
Serhiy Storchaka 57f9b7a124 Issue #1159051: GzipFile now raises EOFError when reading a corrupted file 
with truncated header or footer.
Added tests for reading truncated gzip, bzip2, and lzma files.
 2013-01-22 17:07:49 +02:00
Nadeem Vawda a425c3d5a2 Make lzma.{encode,decode}_filter_properties private. 
These functions were originally added to support LZMA compression in the zipfile
module, and are not of interest for the majority of users.

They can be made public in 3.4 if there is user interest, but in the meanwhile,
I've opted to present a smaller, simpler API for the module's initial release.
 2012-06-21 23:36:48 +02:00
Nadeem Vawda 10c8791978 Fix GzipFile's handling of filenames given as bytes objects. 
Add relevant tests for GzipFile, and also for BZ2File and LZMAFile.
 2012-06-20 01:48:50 +02:00
Nadeem Vawda e860404eb7 Add a function lzma.open(), to match gzip.open() and bz2.open(). 2012-06-04 23:38:12 +02:00
Nadeem Vawda 6cbb20cdf6 Allow LZMAFile to accept modes with a "b" suffix. 2012-06-04 23:36:24 +02:00
Nadeem Vawda 33c34da574 Simplify usage of LZMAFile's fileobj support, like with BZ2File. 2012-06-04 23:34:07 +02:00
Nadeem Vawda bc459bb484 Rename lzma.check_is_supported() to is_check_supported() to avoid grammatical confusion. 2012-05-06 23:01:51 +02:00
Nadeem Vawda f55b329edc Add lzma.{encode,decode}_filter_properties(). 2012-05-06 23:01:27 +02:00
Nadeem Vawda ae557d767f Fix seekable() in BZ2File and LZMAFile to check whether the underlying file supports seek(). 2012-02-12 01:51:38 +02:00
Nadeem Vawda 3ff069ebc6 Issue #6715: Add module for compression using the LZMA algorithm. 2011-11-30 00:25:06 +02:00