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MySQL: Fix endianness, introduce mysql_eof() event

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We were parsing MySQL using bigendian even though the protocol is
specified as with "least significant byte first" [1]. This is most
problematic when parsing length encoded strings with 2 byte length
fields...

Further, I think, the EOF_Packet parsing was borked, either due to
testing the CLIENT_DEPRECATE_EOF with the wrong endianness, or due to
the workaround in Resultset processing raising mysql_ok(). Introduce a
new mysql_eof() that triggers for EOF_Packet's and remove the fake
mysql_ok() Resultset invocation to fix. Adapt the mysql script and tests
to account for the new event.

This is a quite backwards incompatible change on the event level, but
due to being quite buggy in general, doubt this matters to many.

I think there is more buried, but this fixes the violation of the simple
"SHOW ENGINE INNODB STATUS" and the existing tests continue to
succeed...

[1] https://dev.mysql.com/doc/dev/mysql-server/latest/page_protocol_basic_dt_integers.html
This commit is contained in:
Arne Welzel 2023-01-24 09:35:27 +01:00
parent 1772a1bd6d
commit 672602dae7
10 changed files with 144 additions and 43 deletions
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11
testing/btest/Baseline/scripts.base.protocols.mysql.show-engine-innodb-status/out Normal file
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### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
mysql ok, 0
mysql request, 3, select @@version_comment limit 1
mysql eof, T
mysql result row, 1, MySQL Community Server - GPL
mysql eof, F
mysql request, 3, SHOW ENGINE INNODB STATUS
mysql eof, T
mysql result row, 3, InnoDB
mysql eof, F
mysql request, 1,