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36 Commits

Author SHA1 Message Date
Victor Stinner 861f067201 Merge 3.4 (os.urandom) 2015-10-01 10:00:23 +02:00
Victor Stinner 78cc2e8968 Issue #25003: os.urandom() doesn't use getentropy() on Solaris because 
getentropy() is blocking, whereas os.urandom() should not block. getentropy()
is supported since Solaris 11.3.
 2015-10-01 09:59:32 +02:00
Victor Stinner bae2d6203f Issue #25003: On Solaris 11.3 or newer, os.urandom() now uses the getrandom() 
function instead of the getentropy() function. The getentropy() function is
blocking to generate very good quality entropy, os.urandom() doesn't need such
high-quality entropy.
 2015-10-01 09:47:30 +02:00
Victor Stinner 61d5aab9b9 py_getrandom(): getrandom() *can* return EINTR 
See the latest version of getrandom() manual page:
http://man7.org/linux/man-pages/man2/getrandom.2.html#NOTES

    The behavior when a call to getrandom() that is blocked while reading from
    /dev/urandom is interrupted by a signal handler depends on the
    initialization state of the entropy buffer and on the request size, buflen.
    If the entropy is not yet initialized, then the call will fail with the
    EINTR error.  If the entropy pool has been initialized and the request size
    is large (buflen > 256), the call either succeeds, returning a partially
    filled buffer, or fails with the error EINTR.  If the entropy pool has been
    initialized and the request size is small (buflen <= 256), then getrandom()
    will not fail with EINTR.  Instead, it will return all of the bytes that
    have been requested.

Note: py_getrandom() calls getrandom() with flags=0.
 2015-07-30 10:13:52 +02:00
Victor Stinner 81c6df5c0f (Merge 3.4) Issue #22585: os.urandom() now releases the GIL when the 
getentropy() is used (OpenBSD 5.6+).
 2015-03-30 11:19:07 +02:00
Victor Stinner 9aa1331c6f Issue #22585: os.urandom() now releases the GIL when the getentropy() is used 
(OpenBSD 5.6+).
 2015-03-30 11:18:30 +02:00
Victor Stinner 79b74aeb20 Issue #22181: os.urandom() now releases the GIL when the getrandom() 
implementation is used.
 2015-03-30 11:16:40 +02:00
Victor Stinner e134a7fe36 Issue #23752: _Py_fstat() is now responsible to raise the Python exception 
Add _Py_fstat_noraise() function when a Python exception is not welcome.
 2015-03-30 10:09:31 +02:00
Victor Stinner c9382eb7ae Issue #23707: On UNIX, os.urandom() now calls the Python signal handler when 
read() is interrupted by a signal.

dev_urandom_python() now calls _Py_read() helper instead of calling directly
read().
 2015-03-19 23:36:33 +01:00
Victor Stinner c7cd12da60 Issue #22181: Fix dev_urandom_noraise(), try calling py_getrandom() before 
opening /dev/urandom.
 2015-03-19 23:24:45 +01:00
Victor Stinner 9eb57c5fa5 Issue #22181: The availability of the getrandom() is now checked in configure, 
and stored in pyconfig.h as the new HAVE_GETRANDOM_SYSCALL define.

Fix os.urandom() tests using file descriptors if os.urandom() uses getrandom().
 2015-03-19 22:21:49 +01:00
Victor Stinner 59f7fb29ec Issue #22181: On Linux, os.urandom() now uses the new getrandom() syscall if 
available, syscall introduced in the Linux kernel 3.17. It is more reliable
and more secure, because it avoids the need of a file descriptor and waits
until the kernel has enough entropy.
 2015-03-18 14:39:33 +01:00
Victor Stinner a555cfcb73 Issue #23694: Enhance _Py_open(), it now raises exceptions 
* _Py_open() now raises exceptions on error. If open() fails, it raises an
  OSError with the filename.
* _Py_open() now releases the GIL while calling open()
* Add _Py_open_noraise() when _Py_open() cannot be used because the GIL is not
  held
 2015-03-18 00:22:14 +01:00
Steve Dower f2f373f593 Issue #23152: Implement _Py_fstat() to support files larger than 2 GB on Windows. 
fstat() may fail with EOVERFLOW on files larger than 2 GB because the file size type is an signed 32-bit integer.
 2015-02-21 08:44:05 -08:00
Victor Stinner fe02e39029 Issue #22585: On OpenBSD 5.6 and newer, os.urandom() now calls getentropy(), 
instead of reading /dev/urandom, to get pseudo-random bytes.
 2014-12-21 01:16:38 +01:00
Victor Stinner 4d6a3d6c01 Issue #22585: On OpenBSD 5.6 and newer, os.urandom() now calls getentropy(), 
instead of reading /dev/urandom, to get pseudo-random bytes.
 2014-12-21 01:16:38 +01:00
Serhiy Storchaka 56a6d855e2 Removed duplicated words in in comments and docs. 2014-12-01 18:28:43 +02:00
Serhiy Storchaka 83000a490a Removed duplicated words in in comments and docs. 2014-12-01 18:30:14 +02:00
Tim Golden b8ac3e1a20 Issue21393 Use CryptReleaseContext to release Crypt handle on Windows 2014-05-06 13:29:45 +01:00
Victor Stinner d50c3f3f3a Issue #21393: random.c: on Windows, close the hCryptProv handle at exit 2014-05-02 22:06:44 +02:00
Antoine Pitrou e472aeafc3 Issue #21207: Detect when the os.urandom cached fd has been closed or replaced, and open it anew. 2014-04-26 14:33:03 +02:00
Christian Heimes af01f66817 Issue #16136: Remove VMS support and VMS-related code 2013-12-21 16:19:10 +01:00
Christian Heimes 985ecdcfc2 ssue #19183: Implement PEP 456 'secure and interchangeable hash algorithm'. 
Python now uses SipHash24 on all major platforms.
 2013-11-20 11:46:18 +01:00
Victor Stinner 0c083461a5 Fix compiler warning in win32_urandom(): explicit cast to DWORD in 
CryptGenRandom()
 2013-11-15 23:26:25 +01:00
Georg Brandl af1edb7f45 merge with 3.3 2013-10-06 18:48:30 +02:00
Georg Brandl c6a2c9b466 Closes #15213: update comment for _PyOS_URandom 2013-10-06 18:43:19 +02:00
Antoine Pitrou 4879a963d4 Issue #18756: os.urandom() now uses a lazily-opened persistent file descriptor, so as to avoid using many file descriptors when run in parallel from multiple threads. 2013-08-31 00:26:02 +02:00
Victor Stinner daf455554b Issue #18571: Implementation of the PEP 446: file descriptors and file handles 
are now created non-inheritable; add functions os.get/set_inheritable(),
os.get/set_handle_inheritable() and socket.socket.get/set_inheritable().
 2013-08-28 00:53:59 +02:00
Antoine Pitrou 95b21460ee Issue #18756: Improve error reporting in os.urandom() when the failure is due to something else than /dev/urandom not existing. 2013-08-16 20:49:32 +02:00
Antoine Pitrou ec34ab5010 Issue #18756: Improve error reporting in os.urandom() when the failure is due to something else than /dev/urandom not existing. 2013-08-16 20:44:38 +02:00
Martin v. Löwis 3f50bf652b Drop support for Windows 2000; allow any XP API (but not Vista+). 
Drop SDK version configuration for Tk compilation, to not bind it to W2k
anymore. Binding it to XP would conflict with Tk's own binding of tkMenu to W2k.
 2013-01-25 14:06:18 +01:00
Antoine Pitrou 380c55cc58 Issue #15340: Fix importing the random module when /dev/urandom cannot be opened. 
This was a regression caused by the hash randomization patch.
 2012-09-07 23:49:07 +02:00
Benjamin Peterson c9f54cf512 enable hash randomization by default 2012-02-21 16:08:05 -05:00
Benjamin Peterson 69e9727657 ensure no one tries to hash things before the random seed is found 2012-02-21 11:08:50 -05:00
Georg Brandl 12897d7d39 Fix typo in conditional. 2012-02-20 23:49:29 +01:00
Georg Brandl 2daf6ae249 Issue #13703: add a way to randomize the hash values of basic types (str, bytes, datetime) 
in order to make algorithmic complexity attacks on (e.g.) web apps much more complicated.

The environment variable PYTHONHASHSEED and the new command line flag -R control this
behavior.
 2012-02-20 19:54:16 +01:00