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MDEV-4307 Support at least 48 utf8 characters in username in server and PAM

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Extend plugin auth api to support up to 512 bytes in the user names.
Use the API versioning to support old auth plugins too!
This commit is contained in:
Sergei Golubchik
2013-03-26 19:17:26 +01:00
parent 1d46ee77d1
commit 102a7a2a76
11 changed files with 226 additions and 11 deletions
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65
sql/sql_plugin_compat.h Normal file
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/* Copyright (C) 2013 Sergei Golubchik and Monty Program Ab
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
/* old plugin api structures, used for backward compatibility */
#define upgrade_var(X) latest->X= X
#define upgrade_str(X) strmake(latest->X, X, sizeof(X))
#define downgrade_var(X) X= latest->X
#define downgrade_str(X) strmake(X, latest->X, sizeof(X)-1)
/**************************************************************/
/* Authentication API, version 0x0100 *************************/
#define MIN_AUTHENTICATION_INTERFACE_VERSION 0x0100
struct MYSQL_SERVER_AUTH_INFO_0x0100 {
char *user_name;
unsigned int user_name_length;
const char *auth_string;
unsigned long auth_string_length;
char authenticated_as[49];
char external_user[512];
int password_used;
const char *host_or_ip;
unsigned int host_or_ip_length;
void upgrade(MYSQL_SERVER_AUTH_INFO *latest)
{
upgrade_var(user_name);
upgrade_var(user_name_length);
upgrade_var(auth_string);
upgrade_var(auth_string_length);
upgrade_str(authenticated_as);
upgrade_str(external_user);
upgrade_var(password_used);
upgrade_var(host_or_ip);
upgrade_var(host_or_ip_length);
}
void downgrade(MYSQL_SERVER_AUTH_INFO *latest)
{
downgrade_var(user_name);
downgrade_var(user_name_length);
downgrade_var(auth_string);
downgrade_var(auth_string_length);
downgrade_str(authenticated_as);
downgrade_str(external_user);
downgrade_var(password_used);
downgrade_var(host_or_ip);
downgrade_var(host_or_ip_length);
}
};
/**************************************************************/