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/* Copyright (c) 2006, 2011, Oracle and/or its affiliates.
Copyright (c) 2012, 2013, 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 */
#include <stdio.h>
#include <mysql/plugin.h>
#include <mysql/plugin_audit.h>
#if !defined(__attribute__) && (defined(__cplusplus) || !defined(__GNUC__) || __GNUC__ == 2 && __GNUC_MINOR__ < 8)
#define __attribute__(A)
#endif
#ifdef _MSC_VER
#define snprintf _snprintf
#endif
static volatile int ncalls; /* for SHOW STATUS, see below */
static volatile int ncalls_general_log;
static volatile int ncalls_general_error;
static volatile int ncalls_general_result;
FILE *f;
/*
Initialize the plugin at server start or plugin installation.
SYNOPSIS
audit_null_plugin_init()
DESCRIPTION
Does nothing.
RETURN VALUE
0 success
1 failure (cannot happen)
*/
static int audit_null_plugin_init(void *arg __attribute__((unused)))
{
ncalls= 0;
ncalls_general_log= 0;
ncalls_general_error= 0;
ncalls_general_result= 0;
f = fopen("audit_null_tables.log", "w");
if (!f)
return 1;
return 0;
}
/*
Terminate the plugin at server shutdown or plugin deinstallation.
SYNOPSIS
audit_null_plugin_deinit()
Does nothing.
RETURN VALUE
0 success
1 failure (cannot happen)
*/
static int audit_null_plugin_deinit(void *arg __attribute__((unused)))
{
fclose(f);
return 0;
}
/*
Foo
SYNOPSIS
audit_null_notify()
thd connection context
DESCRIPTION
*/
static void audit_null_notify(MYSQL_THD thd __attribute__((unused)),
unsigned int event_class,
const void *event)
{
/* prone to races, oh well */
ncalls++;
if (event_class == MYSQL_AUDIT_GENERAL_CLASS)
{
const struct mysql_event_general *event_general=
(const struct mysql_event_general *) event;
switch (event_general->event_subclass)
{
case MYSQL_AUDIT_GENERAL_LOG:
ncalls_general_log++;
fprintf(f, "%s\t>> %s\n", event_general->general_user,
event_general->general_query);
break;
case MYSQL_AUDIT_GENERAL_ERROR:
ncalls_general_error++;
break;
case MYSQL_AUDIT_GENERAL_RESULT:
ncalls_general_result++;
break;
default:
break;
}
}
else
if (event_class == MYSQL_AUDIT_TABLE_CLASS)
{
const struct mysql_event_table *event_table=
(const struct mysql_event_table *) event;
const char *ip= event_table->ip ? event_table->ip : "";
const char *op= 0;
char buf[1024];
switch (event_table->event_subclass)
{
case MYSQL_AUDIT_TABLE_LOCK:
op= event_table->read_only ? "read" : "write";
break;
case MYSQL_AUDIT_TABLE_CREATE:
op= "create";
break;
case MYSQL_AUDIT_TABLE_DROP:
op= "drop";
break;
case MYSQL_AUDIT_TABLE_ALTER:
op= "alter";
break;
case MYSQL_AUDIT_TABLE_RENAME:
snprintf(buf, sizeof(buf), "rename to %s.%s",
event_table->new_database, event_table->new_table);
buf[sizeof(buf)-1]= 0;
op= buf;
break;
}
fprintf(f, "%s[%s] @ %s [%s]\t%s.%s : %s\n",
event_table->priv_user, event_table->user,
event_table->host, ip,
event_table->database, event_table->table, op);
}
}
/*
Plugin type-specific descriptor
*/
static struct st_mysql_audit audit_null_descriptor=
{
MYSQL_AUDIT_INTERFACE_VERSION, NULL, audit_null_notify,
{ MYSQL_AUDIT_GENERAL_CLASSMASK | MYSQL_AUDIT_TABLE_CLASSMASK }
};
/*
Plugin status variables for SHOW STATUS
*/
static struct st_mysql_show_var simple_status[]=
{
{ "called", (char *) &ncalls, SHOW_INT },
{ "general_error", (char *) &ncalls_general_error, SHOW_INT },
{ "general_log", (char *) &ncalls_general_log, SHOW_INT },
{ "general_result", (char *) &ncalls_general_result, SHOW_INT },
{ 0, 0, 0}
};
/*
Plugin library descriptor
*/
mysql_declare_plugin(audit_null)
{
MYSQL_AUDIT_PLUGIN, /* type */
&audit_null_descriptor, /* descriptor */
"AUDIT_NULL", /* name */
"Oracle Corp", /* author */
"Simple NULL Audit", /* description */
PLUGIN_LICENSE_GPL,
audit_null_plugin_init, /* init function (when loaded) */
audit_null_plugin_deinit, /* deinit function (when unloaded) */
0x0002, /* version */
simple_status, /* status variables */
NULL, /* system variables */
NULL,
0,
}
mysql_declare_plugin_end;
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