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/* Copyright (C) 2015 Vladislav Vaintroub, Georg Richter 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 02110-1335 USA */
/**
@file
auth_pipe authentication plugin.
Authentication is successful if the connection is done via a named pipe
pipe peer name matches mysql user name
*/
#include <mysql/plugin_auth.h>
#include <string.h>
#include <lmcons.h>
/**
This authentication callback obtains user name using named pipe impersonation
*/
static int pipe_auth(MYSQL_PLUGIN_VIO *vio, MYSQL_SERVER_AUTH_INFO *info)
{
unsigned char *pkt;
MYSQL_PLUGIN_VIO_INFO vio_info;
char username[UNLEN + 1];
DWORD username_length;
int ret;
/* no user name yet ? read the client handshake packet with the user name */
if (info->user_name == 0)
{
if (vio->read_packet(vio, &pkt) < 0)
return CR_ERROR;
}
info->password_used= PASSWORD_USED_NO_MENTION;
vio->info(vio, &vio_info);
if (vio_info.protocol != MYSQL_VIO_PIPE)
return CR_ERROR;
/* Impersonate the named pipe peer, and retrieve the user name */
if (!ImpersonateNamedPipeClient(vio_info.handle))
return CR_ERROR;
username_length=UNLEN;
ret= CR_ERROR;
if (GetUserName(username, &username_length))
{
/* Always compare names case-insensitive on Windows.*/
if (_stricmp(username, info->user_name) == 0)
ret= CR_OK;
}
RevertToSelf();
return ret;
}
static struct st_mysql_auth pipe_auth_handler=
{
MYSQL_AUTHENTICATION_INTERFACE_VERSION,
0,
pipe_auth
};
maria_declare_plugin(auth_named_pipe)
{
MYSQL_AUTHENTICATION_PLUGIN,
&pipe_auth_handler,
"named_pipe",
"Vladislav Vaintroub, Georg Richter",
"Windows named pipe based authentication",
PLUGIN_LICENSE_GPL,
NULL,
NULL,
0x0100,
NULL,
NULL,
"1.0",
MariaDB_PLUGIN_MATURITY_STABLE
}
maria_declare_plugin_end;
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