RFC: https://wiki.php.net/rfc/deprecations_php_8_5#remove_disable_classes_ini_setting
This took longer to merge than expected but the initial motivation from 2 years ago still applied:
As described in the email to the PHP internals list [1] this feature is fundamentally broken and pointless.
Only internal classes can be disable which brings the following observation. On a minimal build of PHP, with only the mandatory extensions enabled, there are 148 classes/interfaces/traits defined. [2]
Other than the SPL ones (and even then), disabling any of these classes will cause issues within the engine.
Moreover, the SPL ones are not a security concern.
Therefore, any other class that can be disabled must come from an extension that can be disabled altogether. And "disabling" a class from an extension without disabling said extension will render it useless anyway.
If a hosting provided is concerned about an extension, then it should not enable it in the first place. Not break it ad hoc.
Considering the above, I cannot see how this functionality was ever useful.
This is in stark contrast to the disable_functions INI setting, which can be used to selectively remove functionality of an extension without breaking it overall.
What makes this setting particularly broken is that it does not unregister the class, it only overwrites the create CE handler to emit a warning and purge the properties and function hashtables. This leads to various use after free, segfaults, and broken expectations for the engine and extensions which define said classes. On top of that, it is possible to actually instantiate such a class (and even classes which actually disallow this like ext/imap) in userland, and pass it to function that are typed against said class without raising a TypeError. However, when trying to do anything with said object stuff is going to explode in countless ways.
[1] https://news-web.php.net/php.internals/120896
[2] https://gist.github.com/Girgias/63d55ba1e50b580412b004046daed02b
The stack limit is checked when entering execute_ex(), but the fuzzer has
its own execute function and does not call execute_ex().
Add a stack limit check in the fuzzer's execute function.
Closes GH-19391
This removes the --enable-opcache/--disable-opcache configure switch. OPcache
is now always builtin. The default value of opcache.enable and
opcache.enable_cli is unchanged.
RFC: https://wiki.php.net/rfc/make_opcache_required
Closes GH-18961.
Co-authored-by: Tim Düsterhus <tim@tideways-gmbh.com>
- AS_VAR_IF macro used
- redundant quotes removed
- PHP_FUZZER_TARGET macro body synced with the rest of the macros in
php-src
- PHP_FUZZER_TARGET arguments quoted
This macro once had also the 5th argument (the build target), which was
removed via 2a6da0f24c. This quotes all
PHP_SELECT_SAPI arguments and removes the redundant ones. The basic
macro usage help text is moved to the macros section from the obsolete
docs file.
- Arguments quoted
- Redundant comments removed (some basic help info is in the
build/php.m4)
- APXS variable as such isn't used in the generated Makefile, the path
to the apxs tool is inserted during the configure step directly
* Include from build dir first
This fixes out of tree builds by ensuring that configure artifacts are included
from the build dir.
Before, out of tree builds would preferably include files from the src dir, as
the include path was defined as follows (ignoring includes from ext/ and sapi/) :
-I$(top_builddir)/main
-I$(top_srcdir)
-I$(top_builddir)/TSRM
-I$(top_builddir)/Zend
-I$(top_srcdir)/main
-I$(top_srcdir)/Zend
-I$(top_srcdir)/TSRM
-I$(top_builddir)/
As a result, an out of tree build would include configure artifacts such as
`main/php_config.h` from the src dir.
After this change, the include path is defined as follows:
-I$(top_builddir)/main
-I$(top_builddir)
-I$(top_srcdir)/main
-I$(top_srcdir)
-I$(top_builddir)/TSRM
-I$(top_builddir)/Zend
-I$(top_srcdir)/Zend
-I$(top_srcdir)/TSRM
* Fix extension include path for out of tree builds
* Include config.h with the brackets form
`#include "config.h"` searches in the directory containing the including-file
before any other include path. This can include the wrong config.h when building
out of tree and a config.h exists in the source tree.
Using `#include <config.h>` uses exclusively the include path, and gives
priority to the build dir.
These are either undefined or defined to value 1 in Autotools and
Windows:
- HAVE_COMMONCRYPTO_COMMONRANDOM_H
- HAVE_EXIF
- HAVE_FOPENCOOKIE
- HAVE_IF_NAMETOINDEX
- HAVE_LIBICONV
- HAVE_SOCKETS
- HAVE_STRUCT_STAT_ST_RDEV
- HAVE_STRUCT_TM_TM_GMTOFF
- HAVE_STRUCT_TM_TM_ZONE
Follow up of GH-5526 (-Wundef)
* Mark many functions as static
Multiple functions are missing the static qualifier.
* remove unused struct sigactions
struct sigaction act, old_term, old_quit, old_int;
all unused.
* optimizer: minXOR and maxXOR are unused
Global --tag=CC defined in configure.ac is not correct in all cases. For example
linking objects that were compiled from C++ sources needs to be done with C++
compiler, however for link mode libtool will prefer compiler indicated with
--tag.
Fixes GH-12349
While __php_mempcpy is only used by ext/standard/crypt_sha*, the
mempcpy "pattern" is used everywhere.
This commit removes __php_mempcpy, adds zend_mempcpy and transforms
open-coded parts into function calls.
In 6fc8d014df, pakutoma added specialized validation functions for
ISO-2022-JP, JIS, UTF-7, and UTF7-IMAP text. In the future, it is
possible we might add such functions for more legacy text encodings.
Allowing them to be tested by php-fuzz-mbstring may help to catch
bugs, both now and in the future.
Currently, php-fuzz-mbstring only confirms that no crashes (including
ASAN violations) occur when converting text from one encoding to
another.
Try performing each conversion operation with two different sizes for
the intermediate buffer which is used to pass data from the decoder to
the encoder. If the encoding conversion code is correct, the size of
that intermediate buffer shouldn't matter; we should always get exactly
the same results.
This is a much stricter test, which is more likely to catch bugs.
