Backport from 6.0-codebase.

WL#3771
  "Audit Plugin Interface"
  Implement new plug-in type - AUDIT
  New plug-in: audit_null
    simply increments counter for how many times it was called.

include/Makefile.am:
  wl3771
    add new headers to distribution
include/mysql/plugin.h:
  wl3771
    define new AUDIT plugin type
    Split out fulltext plugin type into its own header
include/mysql/plugin.h.pp:
  wl3771
    no real API change, just re-arranged some code
include/mysql/plugin_audit.h:
  wl3771
    pluggable audit interface
include/mysql/plugin_ftparser.h:
  wl3771
    Split out fulltext plugin type into its own header
libmysqld/CMakeLists.txt:
  wl3771
    add sql_audit.cc to build
libmysqld/Makefile.am:
  wl3771
    add sql_audit.cc to build
plugin/audit_null:
  wl3771
    an example plugin for testing pluggable audit interface
plugin/audit_null/Makefile.am:
  wl3771
    an example plugin for testing pluggable audit interface
plugin/audit_null/audit_null.c:
  wl3771
    an example plugin for testing pluggable audit interface
plugin/audit_null/plug.in:
  wl3771
    an example plugin for testing pluggable audit interface
sql/CMakeLists.txt:
  wl3771
    add sql_audit.cc to build
sql/Makefile.am:
  wl3771
    add sql_audit.cc to build
sql/event_queue.cc:
  wl3771
    release audit resources before waiting
sql/log.cc:
  wl3771
    add general audit call for log
sql/mysqld.cc:
  wl3771
    add audit initialize/finalize
    add general audit call for error
sql/sql_audit.cc:
  wl3771
    pluggable audit interface implementation
sql/sql_audit.h:
  wl3771
    pluggable audit interface implementation
sql/sql_class.cc:
  wl3771
    add thd audit init/deinit calls
sql/sql_class.h:
  wl3771
    add required data structures for audit to THD
sql/sql_connect.cc:
  wl3771
    release audit resources before waiting
sql/sql_insert.cc:
  wl3771
    release audit plugins before waiting
sql/sql_parse.cc:
  wl3771
    add general audit call for results
sql/sql_plugin.cc:
  wl3771
    add declarations for audit plugin type

1 files changed, 78 insertions, 0 deletions

diff --git a/sql/sql_audit.h b/sql/sql_audit.h
new file mode 100644
index 00000000000..155211e7ba5
--- /dev/null
+++ b/sql/sql_audit.h
@@ -0,0 +1,78 @@
+#ifndef SQL_AUDIT_INCLUDED
+#define SQL_AUDIT_INCLUDED
+
+/* Copyright (C) 2007 MySQL 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
+
+
+#include <mysql/plugin_audit.h>
+
+extern unsigned long mysql_global_audit_mask[];
+
+
+extern void mysql_audit_initialize();
+extern void mysql_audit_finalize();
+
+
+extern void mysql_audit_init_thd(THD *thd);
+extern void mysql_audit_free_thd(THD *thd);
+
+
+extern void mysql_audit_notify(THD *thd, uint event_class,
+                               uint event_subtype, ...);
+extern void mysql_audit_release(THD *thd);
+
+
+
+/**
+  Call audit plugins of GENERAL audit class.
+  event_subtype should be set to one of:
+    MYSQL_AUDIT_GENERAL_LOG
+    MYSQL_AUDIT_GENERAL_ERROR
+    MYSQL_AUDIT_GENERAL_RESULT
+  
+  @param[in] thd
+  @param[in] event_subtype    Type of general audit event.
+  @param[in] error_code       Error code
+  @param[in] time             time that event occurred
+  @param[in] user             User name
+  @param[in] userlen          User name length
+  @param[in] cmd              Command name
+  @param[in] cmdlen           Command name length
+  @param[in] query            Query string
+  @param[in] querylen         Query string length
+  @param[in] clientcs         Charset of query string
+  @param[in] rows             Number of affected rows
+*/
+ 
+static inline
+void mysql_audit_general(THD *thd, uint event_subtype,
+                         int error_code, time_t time,
+                         const char *user, uint userlen,
+                         const char *cmd, uint cmdlen,
+                         const char *query, uint querylen,
+                         CHARSET_INFO *clientcs,
+                         ha_rows rows)
+{
+#ifndef EMBEDDED_LIBRARY
+  if (mysql_global_audit_mask[0] & MYSQL_AUDIT_GENERAL_CLASSMASK)
+    mysql_audit_notify(thd, MYSQL_AUDIT_GENERAL_CLASS, event_subtype,
+                       error_code, time, user, userlen, cmd, cmdlen,
+                       query, querylen, clientcs, rows);
+#endif
+}
+
+
+#endif /* SQL_AUDIT_INCLUDED */