Adam Seitz [Tue, 1 Dec 2020 23:40:16 +0000 (00:40 +0100)]
Fix #80384: limit read buffer size
In the case of a stream with no filters, php_stream_fill_read_buffer
only reads stream->chunk_size into the read buffer. If the stream has
filters attached, it could unnecessarily buffer a large amount of data.
With this change, php_stream_fill_read_buffer only proceeds until either
the requested size or stream->chunk_size is available in the read buffer.
Co-authored-by: Christoph M. Becker <cmbecker69@gmx.de>
Closes GH-6444.
Nikita Popov [Wed, 16 Dec 2020 11:12:06 +0000 (12:12 +0100)]
MySQLnd: Support cursors in store/get result
This fixes two related issues:
1. When a PS with cursor is used in store_result/get_result,
perform a COM_FETCH with maximum number of rows rather than
silently switching to an unbuffered result set (in the case of
store_result) or erroring (in the case of get_result).
In the future, we might want to make get_result unbuffered for
PS with cursors, as using cursors with buffered result sets
doesn't really make sense. Unlike store_result, get_result
isn't very explicit about what kind of result set is desired.
2. If the client did not request a cursor, but the server reports
that a cursor exists, ignore this and treat the PS as if it
has no cursor (i.e. to not use COM_FETCH). It appears to be a
server side bug that a cursor used inside an SP will be reported
to the client, even though the client cannot use the cursor.
Nikita Popov [Wed, 16 Dec 2020 14:17:13 +0000 (15:17 +0100)]
PDO MySQL: Use mysqlnd column names
mysqlnd already creates interned zend_strings for us, so let's
make use of them.
This also required updating the PDO case changing code to work
with potentially shared strings. For the lowercasing, use the
optimized zend_string_tolower() implementation.
Nikita Popov [Wed, 16 Dec 2020 09:16:50 +0000 (10:16 +0100)]
Fix bug #80523
Don't truncate the file length to unsigned int...
I have no idea whether that fully fixes the problem because the
process gets OOM killed before finishing, but at least the
immediate parse error is gone now.
JIT: Update invalid opcache.jit INI value message to include "tracing" and "function" values
`opcache.jit` accepts `tracing` and `function` as aliases, but they were not mentioned in the start-up INI warning message.
This updates the error message to include all possible values.
Calvin Buckley [Thu, 10 Dec 2020 18:25:32 +0000 (14:25 -0400)]
IBM i PASE doesn't support ITIMER_PROF
Like Cygwin, this platform needs to use a real-time timer.
This was based on a patch by @kadler, but it didn't handle unsetting
the timer, so the timeout would continue to be active, triggering
`hard_timeout` unexpectedly. The patch is fixed to handle unsetting.
Like the test title and some comments in this test describe, this test
was supposed to have `::prepare()` failing because `LOAD DATA INFILE`
would not be supported as prepared statement, and then the test checks
whether follow-up queries would succeed. However, `LOAD DATA INFILE`
is supported for prepared statements at least on Windows with mysqlnd,
so the test does no longer test what it is supposed to do. Therefore,
we drop it.
Nikita Popov [Fri, 11 Dec 2020 11:13:52 +0000 (12:13 +0100)]
PDO MySQL: Use stmt_next_result with libmysqlclient as well
libmysqlclient added this function in version 5.5, which happens
to be the minimum we support. If we have a prepared statement,
we should use it on both mysqlnd and libmysqlclient, even if the
handling afterwards is different.
This fixes error handling with native prepared statements.
Nikita Popov [Fri, 11 Dec 2020 11:04:44 +0000 (12:04 +0100)]
PDO MySQL: Fix libmysql option test
The fact that getAttribute() fails for various libmysqlclient-only
options is a known issue, and the test was taking that into account.
However, the change of the default error mode broke the handling.
We need to handle the exceptions now.
Nikita Popov [Fri, 11 Dec 2020 10:20:33 +0000 (11:20 +0100)]
Fixed bug #62889
Our minimum libmysqlclient version requirement is high enough
that we don't need to check for MYSQL_OPT_LOCAL_INFILE support.
However, the mysql_get_option() function seems to only be available
since 5.7 (though it's really hard to find any definitie information
on when MySQL introduced certain functions or changes...) so we
need to store the value of the flag locally to make it available
through getAttribute().
Nikita Popov [Thu, 10 Dec 2020 15:52:17 +0000 (16:52 +0100)]
Fixed bug #72368
Generate a param count mismatch error even if the query contains
no placeholders.
Additionally we shouldn't HANDLE errors from pdo_parse_params,
which are always reported via raise_impl_error. Doing so results
in duplicate error messages.
Nikita Popov [Thu, 10 Dec 2020 14:51:17 +0000 (15:51 +0100)]
Fixed bug #79131
When a driver reports an error during EVT_ALLOC (and some over EVTs),
make sure we handle it as usual, i.e. warn or throw.
This requires some adjustments in PDO PgSQL to stop manually doing
this through an impl error.
Unfortunately the PDO PgSQL error messages regress because of this,
as they now include a completely arbitrary error code. There doesn't
seem to be an ability to skip it right now.
Nikita Popov [Thu, 10 Dec 2020 10:46:29 +0000 (11:46 +0100)]
Fixed bug #79872 by improving error message
The actual behavior here is correct, but the previous error
message was misleading, as neither fetchAll() nor buffered queries
would help in this situation. Instead it is necessary to consume
all rowsets, which can be done by either unsetting the statement
or calling closeCursor().
Nikita Popov [Thu, 10 Dec 2020 10:21:06 +0000 (11:21 +0100)]
Fixed bug #76815
When we receive an error while reading a result set, we should
assume that no more result sets are available. libmysqlclient
implements the same behavior.
Nikita Popov [Wed, 9 Dec 2020 15:30:01 +0000 (16:30 +0100)]
Fixed bug #66878
Keep track of whether we have fully consumed all result sets,
either using nextRowset() calls or closeCursor() and skip the
attempt to consume remaining results sets during destruction in
that case.
Especiall if closeCursor() has been used, we really shouldn't
have this sort of cross-statement inference.
Nikita Popov [Wed, 9 Dec 2020 13:46:49 +0000 (14:46 +0100)]
PDO MySQL: Make sure nextRowset() works with partially consumed result
This was already working in all cases apart from native prepared
statements with unbuffered queries. In that case invoking
stmt_free_result() addresses the issue.
Nikita Popov [Wed, 9 Dec 2020 10:13:48 +0000 (11:13 +0100)]
Fix stmt_free_result implementation and usage
Two bugs both affecting the bug_pecl_7976.phpt test ("works with
mysqlnd" haha):
* We should not change the connection state in stmt_free_result.
This makes mysql_stmt_free_result usable under mysqlnd and
not just libmysqlclient.
* If we call mysql_stmt_free_result, we still need to consume
any outstanding result sets.
Nikita Popov [Tue, 8 Dec 2020 15:58:30 +0000 (16:58 +0100)]
Handle changing column count in mysqlnd result binding
If the count changes from prepare to execute and result_bind is
alreadly allocated, reallocate it there.
This is something of a hack. It would be cleaner to require that
result bindings are registered only after execute, when the final
result set fields are known. But mysqli at least directly exposes
this to the user, so we have no guarantee.
Nikita Popov [Tue, 8 Dec 2020 13:28:18 +0000 (14:28 +0100)]
PDO MySQL: Normalize handling of empty stored procedure result set
MySQL always returns a trailing empty result set for stored
procedure calls, which is used to convey status information.
The PDO MySQL implementation is presently confused about what to
do with it: If mysqlnd is used and native prepared statements are
used, this result set is skipped. In all other cases it is not
skipped. We also have quite a few XFAILed tests relating to this.
This patch normalizes (for PHP-8.0 only) the behavior towards
always retaining the empty result set. This is simply how MySQL
stored procedures work (some expletives omitted here) and we can't
distinguish this "useless" result set from an empty result of a
multi query. Multi queries are not a concern for native prepared
statements, as PDO does not allow them in that case, but they are
a concern for emulated prepared statements.
When `php_zlib_deflate_filter()` is called with `PSFS_FLAG_FLUSH_INC`
but without new buckets being available (e.g. because a user calls
`rewind()` after writing to the stream), we have to make sure that any
pending data are flushed. This could basically be done like in the
attached patch[1], but that could cause unnessary flushes, which can be
harmful for compression, and adds unnecessary flush markers to the
stream. Thus, we use the `php_zlib_filter_data.finished` field, which
has not been used for `zlib.deflate` filters, and properly keep track
of the need to flush.
Fix #77069: stream filter loses final block of data
Reading from a stream may return greater than zero, but nonetheless the
stream's EOF flag may have been set. We have to cater to this
condition by setting the close flag for filters.
We also have to cater to that change in the zlib.inflate filter:
If `inflate()` is called with flush mode `Z_FINISH`, but the output
buffer is not large enough to inflate all available data, it fails with
`Z_BUF_ERROR`. However, `Z_BUF_ERROR` is not fatal; in fact, the zlib
manual states: "If deflate returns with Z_OK or Z_BUF_ERROR, this
function must be called again with Z_FINISH and more output space
(updated avail_out) but no more input data, until it returns with
Z_STREAM_END or an error." Hence, we do so.
Nikita Popov [Mon, 7 Dec 2020 11:33:23 +0000 (12:33 +0100)]
Fix another typed resource issue in unserialization
We also need to discard old entries in the ref_props HT when values
are overwritten.
We should really forbid these kinds of overwrites. I believe they
can only occur in manually crafted serialization strings, and
cause so many problems...
projects / php / log