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MDEV-17950 SHOW GRANTS FOR does not work for a user identified with non-existing plugin

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Revert the side effect of 7c40996cc8.
Do not convert password hash to its binary representation when a user
entry is loaded. Do it lazily on the first authenticatation attempt.

As a collateral - force all authentication plugins to follow the
protocol and read_packet at least once before accessing info->username
(username is not available before first client handshake packet is read).

Fix PAM and GSSAPI plugins to behave.
This commit is contained in:
Sergei Golubchik 2019-01-12 15:56:25 +01:00
commit c94ec9fc67
13 changed files with 186 additions and 145 deletions
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9
mysql-test/main/failed_auth_unixsocket.result
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@ -1,13 +1,8 @@
update mysql.global_priv set priv=json_insert(priv, '$.plugin', 'unix_socket');
flush privileges;
Warnings:
Warning 1524 Plugin 'unix_socket' is not loaded
Warning 1524 Plugin 'unix_socket' is not loaded
Warning 1524 Plugin 'unix_socket' is not loaded
Warning 1524 Plugin 'unix_socket' is not loaded
connect(localhost,USER,,test,MASTER_PORT,MASTER_SOCKET);
ERROR 28000: Access denied for user 'USER'@'localhost' (using password: NO)
ERROR 28000: Access denied for user 'USER'@'localhost' (using password: NO)
ERROR HY000: Plugin 'unix_socket' is not loaded
ERROR HY000: Plugin 'unix_socket' is not loaded
install plugin unix_socket soname 'auth_socket.so';
flush privileges;
connect(localhost,USER,,test,MASTER_PORT,MASTER_SOCKET);