audit_null.cc File Reference

#include <mysql/plugin.h>
#include <mysql/plugin_audit.h>
#include <mysqld_error.h>
#include <stdio.h>
#include <sys/types.h>
#include "lex_string.h"
#include "m_string.h"
#include "my_compiler.h"
#include "my_inttypes.h"
#include "my_macros.h"
#include "my_sys.h"
#include "mysql/psi/mysql_mutex.h"
#include "mysql/strings/m_ctype.h"
#include "nulls.h"
#include "string_with_len.h"
#include "strxnmov.h"
#include "thr_mutex.h"
#include "plugin/audit_null/audit_null_variables.h"

Macros
#define	AUDIT_NULL_VAR(x)   static volatile int number_of_calls_##x;
#define	AUDIT_NULL_VAR(x)

Functions
static void	increment_counter (volatile int *counter)
static	MYSQL_THDVAR_STR (abort_message, PLUGIN_VAR_RQCMDARG|PLUGIN_VAR_MEMALLOC, "Custom message for event abort.", nullptr, nullptr, nullptr)
static	MYSQL_THDVAR_INT (abort_value, PLUGIN_VAR_RQCMDARG, "Event abort value.", nullptr, nullptr, 1, -1, 150, 0)
static	MYSQL_THDVAR_STR (event_order_check, PLUGIN_VAR_RQCMDARG|PLUGIN_VAR_MEMALLOC, "Event order check string", nullptr, nullptr, nullptr)
static	MYSQL_THDVAR_UINT (event_order_check_consume_ignore_count, PLUGIN_VAR_RQCMDARG, "Do not consume event order string specified " "number of times.", nullptr, nullptr, 0, 0, UINT_MAX, 1)
static	MYSQL_THDVAR_INT (event_order_started, PLUGIN_VAR_RQCMDARG, "Plugin is in the event order check.", nullptr, nullptr, 0, 0, 1, 0)
static	MYSQL_THDVAR_INT (event_order_check_exact, PLUGIN_VAR_RQCMDARG, "Plugin checks exact event order.", nullptr, nullptr, 1, 0, 1, 0)
static	MYSQL_THDVAR_STR (event_record_def, PLUGIN_VAR_RQCMDARG|PLUGIN_VAR_MEMALLOC, "Event recording definition", nullptr, nullptr, nullptr)
static	MYSQL_THDVAR_STR (event_record, PLUGIN_VAR_READONLY|PLUGIN_VAR_RQCMDARG|PLUGIN_VAR_MEMALLOC, "Event recording", nullptr, nullptr, nullptr)
static int	audit_null_plugin_init (void *arg)
static int	audit_null_plugin_deinit (void *arg)
static LEX_CSTRING	event_to_str (unsigned int event_class, unsigned long event_subclass)
	Converts event_class and event_subclass into a string. More...
static LEX_CSTRING	get_token (char **str)
	Read token delimited by a semicolon from a string. More...
static char *	add_event (const char *var, LEX_CSTRING event, const char *data, size_t data_length)
static void	process_event_record (MYSQL_THD thd, LEX_CSTRING event_name, const char *data, size_t data_length)
static int	process_command (MYSQL_THD thd, LEX_CSTRING event_command, bool consume_event)
static int	audit_null_notify (MYSQL_THD thd, mysql_event_class_t event_class, const void *event)
	Plugin function handler. More...
	mysql_declare_plugin (audit_null)

Variables
LEX_CSTRING	event_names [][6]
	Event strings. More...
static volatile int	number_of_calls
static bool	g_plugin_installed = false
static mysql_mutex_t	g_record_buffer_mutex
static char *	g_record_buffer
static SHOW_VAR	simple_status []
static struct st_mysql_audit	audit_null_descriptor
static SYS_VAR *	system_variables []
	mysql_declare_plugin_end

Macro Definition Documentation

AUDIT_NULL_VAR [1/2]

#define AUDIT_NULL_VAR

(

x

)

static volatile int number_of_calls_##x;

AUDIT_NULL_VAR [2/2]

#define AUDIT_NULL_VAR

(

x

)

Value:

  {"Audit_null_" #x,                                             \
   const_cast<char *>(                                           \
       reinterpret_cast<volatile char *>(&number_of_calls_##x)), \
   SHOW_INT, SHOW_SCOPE_GLOBAL},

Function Documentation

add_event()

static char * add_event ( const char *  var, LEX_CSTRING  event, const char *  data, size_t  data_length  )

static

audit_null_notify()

static int audit_null_notify ( MYSQL_THD  thd, mysql_event_class_t  event_class, const void *  event  )

static

Plugin function handler.

Parameters

[in]	thd	Connection context.
[in]	event_class	Event class value.
[in]	event	Event data.

Return values

Value

indicating, whether the server should abort continuation of the current operation.

audit_null_plugin_deinit()

static int audit_null_plugin_deinit ( void *  arg )

static

audit_null_plugin_init()

static int audit_null_plugin_init ( void *  arg )

static

event_to_str()

static LEX_CSTRING event_to_str ( unsigned int  event_class, unsigned long  event_subclass  )

static

Converts event_class and event_subclass into a string.

Parameters

[in]	event_class	Event class value.
[in]	event_subclass	Event subclass value.

Return values

Event

name.

get_token()

static LEX_CSTRING get_token ( char **  str )

static

Read token delimited by a semicolon from a string.

Parameters

[in,out]

str

Pointer to a string containing text. Pointer is moved to a new token after the function ends.

Return values

Token

retrieved from a string.

increment_counter()

static void increment_counter ( volatile int *  counter )

static

mysql_declare_plugin()

mysql_declare_plugin

(

audit_null

)

MYSQL_THDVAR_INT() [1/3]

static MYSQL_THDVAR_INT ( abort_value  , PLUGIN_VAR_RQCMDARG  , "Event abort value."  , nullptr  , nullptr  , 1  , -  1, 150  , 0    )

static

MYSQL_THDVAR_INT() [2/3]

static MYSQL_THDVAR_INT ( event_order_check_exact  , PLUGIN_VAR_RQCMDARG  , "Plugin checks exact event order."  , nullptr  , nullptr  , 1  , 0  , 1  , 0    )

static

MYSQL_THDVAR_INT() [3/3]

static MYSQL_THDVAR_INT ( event_order_started  , PLUGIN_VAR_RQCMDARG  , "Plugin is in the event order check."  , nullptr  , nullptr  , 0  , 0  , 1  , 0    )

static

MYSQL_THDVAR_STR() [1/4]

static MYSQL_THDVAR_STR ( abort_message  , PLUGIN_VAR_RQCMDARG|  PLUGIN_VAR_MEMALLOC, "Custom message for event abort."  , nullptr  , nullptr  , nullptr    )

static

MYSQL_THDVAR_STR() [2/4]

static MYSQL_THDVAR_STR ( event_order_check  , PLUGIN_VAR_RQCMDARG|  PLUGIN_VAR_MEMALLOC, "Event order check string"  , nullptr  , nullptr  , nullptr    )

static

MYSQL_THDVAR_STR() [3/4]

static MYSQL_THDVAR_STR ( event_record  , PLUGIN_VAR_READONLY|PLUGIN_VAR_RQCMDARG|  PLUGIN_VAR_MEMALLOC, "Event recording"  , nullptr  , nullptr  , nullptr    )

static

MYSQL_THDVAR_STR() [4/4]

static MYSQL_THDVAR_STR ( event_record_def  , PLUGIN_VAR_RQCMDARG|  PLUGIN_VAR_MEMALLOC, "Event recording definition"  , nullptr  , nullptr  , nullptr    )

static

MYSQL_THDVAR_UINT()

static MYSQL_THDVAR_UINT ( event_order_check_consume_ignore_count  , PLUGIN_VAR_RQCMDARG  , "Do not consume event order string specified " "number of times."  , nullptr  , nullptr  , 0  , 0  , UINT_MAX  , 1    )

static

process_command()

static int process_command ( MYSQL_THD  thd, LEX_CSTRING  event_command, bool  consume_event  )

static

process_event_record()

static void process_event_record ( MYSQL_THD  thd, LEX_CSTRING  event_name, const char *  data, size_t  data_length  )

static

Variable Documentation

audit_null_descriptor

struct st_mysql_audit audit_null_descriptor

static

Initial value:

= {
    MYSQL_AUDIT_INTERFACE_VERSION, 
    nullptr,                       
    audit_null_notify,             
    {(unsigned long)MYSQL_AUDIT_GENERAL_ALL,
     (unsigned long)MYSQL_AUDIT_CONNECTION_ALL,
     (unsigned long)MYSQL_AUDIT_PARSE_ALL,
     0, 
     (unsigned long)MYSQL_AUDIT_TABLE_ACCESS_ALL,
     (unsigned long)MYSQL_AUDIT_GLOBAL_VARIABLE_ALL,
     (unsigned long)MYSQL_AUDIT_SERVER_STARTUP_ALL,
     (unsigned long)MYSQL_AUDIT_SERVER_SHUTDOWN_ALL,
     (unsigned long)MYSQL_AUDIT_COMMAND_ALL,
     (unsigned long)MYSQL_AUDIT_QUERY_ALL,
     (unsigned long)MYSQL_AUDIT_STORED_PROGRAM_ALL,
     (unsigned long)MYSQL_AUDIT_AUTHENTICATION_ALL,
     (unsigned long)MYSQL_AUDIT_MESSAGE_ALL}}

event_names

LEX_CSTRING event_names[][6]

Event strings.

g_plugin_installed

bool g_plugin_installed = false

static

g_record_buffer

char* g_record_buffer

static

g_record_buffer_mutex

mysql_mutex_t g_record_buffer_mutex

static

mysql_declare_plugin_end

mysql_declare_plugin_end

number_of_calls

volatile int number_of_calls

static

simple_status

SHOW_VAR simple_status[]

static

Initial value:

= {
    {"Audit_null_called",
     const_cast<char *>(reinterpret_cast<volatile char *>(&number_of_calls)),
     SHOW_INT, SHOW_SCOPE_GLOBAL},
 
#define AUDIT_NULL_VAR(x)                                        
                                                                 
                                                                 
                                                                 
                                
 
 
 
    {nullptr, nullptr, SHOW_UNDEF, SHOW_SCOPE_GLOBAL}}

system_variables

SYS_VAR* system_variables[]

static

Initial value:

= {
 
    MYSQL_SYSVAR(abort_message),
    MYSQL_SYSVAR(abort_value),
 
    MYSQL_SYSVAR(event_order_check),
    MYSQL_SYSVAR(event_order_check_consume_ignore_count),
    MYSQL_SYSVAR(event_order_started),
    MYSQL_SYSVAR(event_order_check_exact),
 
    MYSQL_SYSVAR(event_record_def),
    MYSQL_SYSVAR(event_record),
    nullptr}