Remove arc4random

There has been a lot of discussion around whether arc4random should be included. Given how many different impementations of it are in the wild, we can't guarantee a secure

Remove arc4random

There has been a lot of discussion around whether arc4random should be included. Given how many different impementations of it are in the wild, we can't guarantee a secure implementation on all platforms.

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Update random.c

Ref: https://github.com/jedisct1/libsodium/commit/beb826f6fd173cff4473c8b7614033dbd4803500

Fixed bug #70641 (Random_* - Better compatibility on Linux distros)

See:
* https://bugs.php.net/bug.php?id=70641
* https://github.com/php/php-src/pull/1513#issuecomment-145571829

Remove makedev() check.

Different error message if makedev check fails

Add support for getrandom(2), add type check on file descriptor

Fix to_read, throw exception if syscall fails

Fixes thanks to feedback from sarnold at ##crypto on freenode

Add support for getrandom(2), add type check on file descriptor

Fix to_read, throw exception if syscall fails

Fixes thanks to feedback from sarnold at ##crypto on freenode

Correction on error conditions

Remove dead code (thanks @defuse)

It turns out getrandom can take >256, getentropy refuses.

Better semantics

Thanks @defuse for catching my silly mistake here

Cast to size_t to be explicit

Let's simplify the logic a bit

Let's be consistent; define everything before we do any logic

Continuously check that the file descriptor is still a valid one

Add device type check on fd initialization

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Merged RFC Random Functions Throwing Exceptions in PHP 7
Squashes commits from PR #1397

commit cd5dcc8c9eb43603d908abcea69c9e18df0f2ed5
Author: SammyK <sammyk@sammykmedia.com>
Da

Merged RFC Random Functions Throwing Exceptions in PHP 7
Squashes commits from PR #1397

commit cd5dcc8c9eb43603d908abcea69c9e18df0f2ed5
Author: SammyK <sammyk@sammykmedia.com>
Date: Tue Sep 8 13:53:42 2015 -0500

Add min max samezies

commit b719499218a4e84efecd4dc1d4235d16142c9793
Author: SammyK <sammyk@sammykmedia.com>
Date: Wed Sep 2 07:00:25 2015 -0500

Make random_bytes() throw Error when $length <= 0 and random_int() throw Error when $min > $max

commit 0cca557291c278716ec4b00b32fc2bdc1c1c8848
Author: SammyK <sammyk@sammykmedia.com>
Date: Wed Sep 2 06:55:59 2015 -0500

Make random_*() functions throw Error exception when random bytes cannot be obtained

commit 998c7f1e209123605b41139e8d9093075ce16bd6
Author: SammyK <sammyk@sammykmedia.com>
Date: Wed Sep 2 06:41:20 2015 -0500

Make random_*() functions throw TypeError when zend_parse_parameters fails

commit 99d305c18820ff55d82d952777cbcdf1cf0158be
Author: SammyK <sammyk@sammykmedia.com>
Date: Mon Jul 6 19:50:47 2015 -0500

Make exceptions less specific

commit b042dfab290713366741a663a420cf12bf802f39
Author: SammyK <sammyk@sammykmedia.com>
Date: Mon Jul 6 17:20:13 2015 -0500

Upgrade warnings to RuntimeExceptions

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improve condition

read() == 0 is EOL

Use ZSTR_ API to access zend_string elements (this is just renaming without semantick changes).

random_int: Fix power of two check.

(x & ~x) is always 0.
((x & (~x + 1)) != x) works.
((x & (x - 1)) != 0) works too.

Add tests for CSPRNG, fix C99 comments

Also replace one return; with RETURN_FALSE; for consistency.

Improve CSPRNG implementation

Initial implementation for CSPRNG API