From: gehrig at teqneers dot de
Operating system: Official Docker Image
PHP version: 7.4.9
Package: Streams related
Bug Type: Bug
Bug description:Stream filter is not called with closing arg on php://temp streams
Description:
------------
As seen in script https://3v4l.org/egsEi a simple stream filter
is
created. It outputs some debug information on php_user_filter::onCreate,
php_user_filter::onClose and on each call to php_user_filter::filter.
The stream filter is then attached to streams based on
a) tmpfile()
b) a php://temp stream
c) a php://memory stream
While a) and c) produce the correct result in all PHP versions, b)
behaves differently on PHP 7.2.0 - 7.2.33, 7.3.0 - 7.3.21, 7.4.0 -
7.4.9, 8.0.0alpha1 - beta1 (according to https://3v4l.org).
As seen from the output the stream filter attached to the php://temp
stream is only called twice (b) while in the other examples it's called
three times (a and c) - with 0 bytes left to consume but $closing = true
on the last call. The "$closing = true" call is missing when using a
php://temp (b).
Older versions of PHP (5.5.21 - 5.5.38, 5.6.5 - 5.6.40, 7.0.0 - 7.0.33,
7.1.0 - 7.1.33) do not show this kind of behaviour, while even older
ones (5.3.29, 5.4.19 - 5.4.45, 5.5.1 - 5.5.20, 5.6.0 - 5.6.4) show the
same behaviour even on php://memory streams (c).
I'm not sure but this one may be related to #68948
(https://bugs.php.net/bug.php?id=68948) and it might even be a duplicate
of #77069 (https://bugs.php.net/bug.php?id=77069).
Test script:
---------------
https://3v4l.org/egsEi
Expected result:
----------------
tmpfile()
filter onCreate
filtered 8192 bytes.
filtered 128 bytes.
filtered 0 bytes and closing.
A...A // shortened - 8320 bytes
filter onClose
php://temp
filter onCreate
filtered 8192 bytes.
filtered 128 bytes.
filtered 0 bytes and closing.
A...A // shortened - 8320 bytes
filter onClose
php://memory
filter onCreate
filtered 8192 bytes.
filtered 128 bytes.
filtered 0 bytes and closing.
A...A // shortened - 8320 bytes
filter onClose
Actual result:
--------------
tmpfile()
filter onCreate
filtered 8192 bytes.
filtered 128 bytes.
filtered 0 bytes and closing.
A...A // shortened - 8320 bytes
filter onClose
php://temp
filter onCreate
filtered 8192 bytes.
filtered 128 bytes.
A...A // shortened - 8320 bytes
filter onClose
php://memory
filter onCreate
filtered 8192 bytes.
filtered 128 bytes.
filtered 0 bytes and closing.
A...A // shortened - 8320 bytes
filter onClose
--
Edit bug report at https://bugs.php.net/bug.php?id=79984&edit=1
--
Fix committed: https://bugs.php.net/fix.php?id=79984&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=79984&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=79984&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=79984&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=79984&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=79984&r=support
Expected behavior: https://bugs.php.net/fix.php?id=79984&r=notwrong
Not enough info: https://bugs.php.net/fix.php?id=79984&r=notenoughinfo
Submitted twice: https://bugs.php.net/fix.php?id=79984&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=79984&r=globals
PHP version support discontinued: https://bugs.php.net/fix.php?id=79984&r=phptooold
Daylight Savings: https://bugs.php.net/fix.php?id=79984&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=79984&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=79984&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=79984&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=79984&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=79984&r=mysqlcfg