Support auth switch request during caching sha2 auth

Report errors from stream read and write operations

The php_stream_read() and php_stream_write() functions now return
an ssize_t value, with negative results indicating failure. Function

Report errors from stream read and write operations

The php_stream_read() and php_stream_write() functions now return
an ssize_t value, with negative results indicating failure. Functions
like fread() and fwrite() will return false in that case.

As a special case, EWOULDBLOCK and EAGAIN on non-blocking streams
should not be regarded as error conditions, and be reported as
successful zero-length reads/writes instead. The handling of EINTR
remains unclear and is internally inconsistent (e.g. some code-paths
will automatically retry on EINTR, while some won't).

I'm landing this now to make sure the stream wrapper ops API changes
make it into 7.4 -- however, if the user-facing changes turn out to
be problematic we have the option of clamping negative returns to
zero in php_stream_read() and php_stream_write() to restore the
old behavior in a relatively non-intrusive manner.

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Remove legacy AC_CHECK_TYPE calls for uint and ulong

The AC_CHECK_TYPE was refactored in more recent versions of Autoconf
and the call with two arguments is obsolete and not recommended

Remove legacy AC_CHECK_TYPE calls for uint and ulong

The AC_CHECK_TYPE was refactored in more recent versions of Autoconf
and the call with two arguments is obsolete and not recommended anymore.

This patch also refactors some leftovers of using ulong and uint which
are not standard nor common usages of types in C.

The ulong can be used as zend_ulong and uint usage is actually
`unsigned int`.

The usage of HAVE_ULONG removed since it is not used in current code
base.

Legacy edgecase for some legacy HPUX systems removed:
- sys/stream.h header is not checked and the HAVE_SYS_STREAM_H is
not defined with current build system.

- flags are unsigned int
- max_allowed_packet changed to unsigned int

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Update and fix remaining year ranges (2019)

This patch follows previous license year ranges updates. With new
approach source code files now have simplified headers with license
info

Update and fix remaining year ranges (2019)

This patch follows previous license year ranges updates. With new
approach source code files now have simplified headers with license
information without year ranges.

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Implement typed properties

RFC: https://wiki.php.net/rfc/typed_properties_v2

This is a squash of PR #3734, which is a squash of PR #3313.

Co-authored-by: Bob Weinand <bobwe

Implement typed properties

RFC: https://wiki.php.net/rfc/typed_properties_v2

This is a squash of PR #3734, which is a squash of PR #3313.

Co-authored-by: Bob Weinand <bobwei9@hotmail.com>
Co-authored-by: Joe Watkins <krakjoe@php.net>
Co-authored-by: Dmitry Stogov <dmitry@zend.com>

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Const changes

Simplify the command factory

Since more than an year it not possible to create commands in the heap
but they are allocated on the stack and directly run. In this regard, it
doesn't m

Simplify the command factory

Since more than an year it not possible to create commands in the heap
but they are allocated on the stack and directly run. In this regard, it
doesn't make sense to have all the vararg stuff. Commands made sense
to be created and pushed onto a stack then a general executor will
run thru the stack and execute/handle the commands.

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Mark const what should not be changed

const-ify some functions

Add type safety for mysqlnd plugin developers

Re-commit MySQL 8 cached SHA auth support

With changes to (hopefully) correctly fall back if OpenSSL support
is missing. Furthermore the hard-coded dependency on ext/hash is
no longe

Re-commit MySQL 8 cached SHA auth support

With changes to (hopefully) correctly fall back if OpenSSL support
is missing. Furthermore the hard-coded dependency on ext/hash is
no longer an issue, as this extension is required in master.

This reverts commit 63072e9c0ebbb676cd39d0f867d873737c676add, reversing
changes made to 4cbabb6852d2a7d966fb78a53d9d4c1cac18f10b.

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Revert all MySQL auth related changes

Per bug #76651 these changes do not appear to work correctly in
some cases. As no immediate fix seems to be forthcoming, I'm
reverting these cha

Revert all MySQL auth related changes

Per bug #76651 these changes do not appear to work correctly in
some cases. As no immediate fix seems to be forthcoming, I'm
reverting these changes.

Revert "Fixed invalid free introduced by d6e81f0bfd0cb90586dd83d4fd47a4302605261a (avoid keeping "invalid" pointer)"

This reverts commit 11507c0e1bfa17a96480f3648397f6975c31551e.

Revert "Fix mysqlnd build without openssl"

This reverts commit 6c9db02ff7812c298d1e7e292ba731d9d3a66790.

Revert "Fix VC compilation as variable size array is not supported"

This reverts commit f96df64cb2219fda42ca875483f874cf3052647c.

Revert "Fix MySQL 8 auth"

This reverts commit d6e81f0bfd0cb90586dd83d4fd47a4302605261a.

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Fix MySQL 8 auth

year++

year++

year++

Use single memory pool for result metadata and result set.

Cleanup. Make difference between MYSQLND_ROW_BUFFER and MYSQLND_MEMORY_POOL_CHUNK (the last one is completely removed).

Embeded zend_list into st_mysqlnd_error_info, to avoid extra allocation/deallocation.

Reimplemented MYSQLND_MEMORY_POOL to avoid allocations ouside of pool. Store all data related to result set in the pool.

Run mysqlmd commands in one step (without separate create/run/free).

Merge mysqlnd_field_hash_key structure into st_mysqlnd_field.

Use stack-allocated packets.

Made "result", "statement" and "last_message" to always use Zend MM heap. (even for persistent connections these entities don't relive request boundary)

Update copyright headers to 2017