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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
parent 3742f6f9aa
commit c94ec9fc67
13 changed files with 186 additions and 145 deletions
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plugin/auth_gssapi/server_plugin.h
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@ -48,4 +48,4 @@ extern char *srv_keytab_path;
int plugin_init();
int plugin_deinit();
int auth_server(MYSQL_PLUGIN_VIO *vio, const char *username, size_t username_len, int use_full_name);
int auth_server(MYSQL_PLUGIN_VIO *vio, MYSQL_SERVER_AUTH_INFO *auth_info);