sql_connect.cc File Reference

#include "sql/sql_connect.h"
#include "my_config.h"
#include "my_psi_config.h"
#include "mysql/components/services/log_builtins.h"
#include "mysql/components/services/log_shared.h"
#include "mysql/my_loglevel.h"
#include "pfs_thread_provider.h"
#include "sql/table.h"
#include <netdb.h>
#include <netinet/in.h>
#include <stdint.h>
#include <string.h>
#include <sys/socket.h>
#include <algorithm>
#include <atomic>
#include <memory>
#include <string>
#include <unordered_map>
#include <utility>
#include "lex_string.h"
#include "m_string.h"
#include "map_helpers.h"
#include "my_command.h"
#include "my_dbug.h"
#include "my_sqlcommand.h"
#include "my_sys.h"
#include "mysql/plugin_audit.h"
#include "mysql/psi/mysql_mutex.h"
#include "mysql/psi/mysql_thread.h"
#include "mysql/service_mysql_alloc.h"
#include "mysql/strings/m_ctype.h"
#include "mysql_com.h"
#include "mysqld_error.h"
#include "sql-common/net_ns.h"
#include "sql/auth/auth_acls.h"
#include "sql/auth/auth_common.h"
#include "sql/auth/sql_security_ctx.h"
#include "sql/debug_sync.h"
#include "sql/derror.h"
#include "sql/hostname_cache.h"
#include "sql/item_func.h"
#include "sql/log.h"
#include "sql/mysqld.h"
#include "sql/protocol.h"
#include "sql/protocol_classic.h"
#include "sql/psi_memory_key.h"
#include "sql/sql_audit.h"
#include "sql/sql_class.h"
#include "sql/sql_error.h"
#include "sql/sql_lex.h"
#include "sql/sql_parse.h"
#include "sql/sql_plugin.h"
#include "sql/system_variables.h"
#include "sql_string.h"
#include "string_with_len.h"
#include "violite.h"
#include <arpa/inet.h>

Macros
#define	SSL_HANDSHAKE_SIZE   2
#define	NORMAL_HANDSHAKE_SIZE   6
#define	MIN_HANDSHAKE_SIZE   2

Functions
int	get_or_create_user_conn (THD *thd, const char *user, const char *host, const USER_RESOURCES *mqh)
int	check_for_max_user_connections (THD *thd, const USER_CONN *uc)
void	decrease_user_connections (USER_CONN *uc)
void	release_user_connection (THD *thd)
bool	check_mqh (THD *thd, uint check_command)
void	init_max_user_conn (void)
void	free_max_user_conn (void)
void	reset_mqh (THD *thd, LEX_USER *lu, bool get_them=false)
bool	thd_init_client_charset (THD *thd, uint cs_number)
	Set thread character set variables from the given ID. More...
static int	check_connection (THD *thd)
static bool	login_connection (THD *thd)
void	end_connection (THD *thd)
static void	prepare_new_connection_state (THD *thd)
bool	thd_prepare_connection (THD *thd)
void	close_connection (THD *thd, uint sql_errno, bool server_shutdown, bool generate_event)
	Close a connection. More...
bool	thd_connection_alive (THD *thd)

Variables
static collation_unordered_map< std::string, unique_ptr_my_free< user_conn > > *	hash_user_connections

Macro Definition Documentation

MIN_HANDSHAKE_SIZE

#define MIN_HANDSHAKE_SIZE   2

NORMAL_HANDSHAKE_SIZE

#define NORMAL_HANDSHAKE_SIZE   6

SSL_HANDSHAKE_SIZE

#define SSL_HANDSHAKE_SIZE   2

Function Documentation

check_connection()

static int check_connection ( THD *  thd )

static

check_for_max_user_connections()

int check_for_max_user_connections	(	THD *	thd,
		const USER_CONN *	uc
	)

check_mqh()

bool check_mqh	(	THD *	thd,
		uint	check_command
	)

close_connection()

void close_connection	(	THD *	thd,
		uint	sql_errno,
		bool	server_shutdown,
		bool	generate_event
	)

Close a connection.

Parameters

thd	Thread handle.
sql_errno	The error code to send before disconnect.
server_shutdown	True for a server shutdown
generate_event	Generate Audit API disconnect event.

Note

For the connection that is doing shutdown, this is called twice

decrease_user_connections()

void decrease_user_connections

(

USER_CONN *

uc

)

end_connection()

void end_connection

(

THD *

thd

)

free_max_user_conn()

void free_max_user_conn

(

void

)

get_or_create_user_conn()

int get_or_create_user_conn	(	THD *	thd,
		const char *	user,
		const char *	host,
		const USER_RESOURCES *	mqh
	)

init_max_user_conn()

void init_max_user_conn

(

void

)

login_connection()

static bool login_connection ( THD *  thd )

static

prepare_new_connection_state()

static void prepare_new_connection_state ( THD *  thd )

static

release_user_connection()

void release_user_connection

(

THD *

thd

)

reset_mqh()

void reset_mqh	(	THD *	thd,
		LEX_USER *	lu,
		bool	get_them = false
	)

thd_connection_alive()

bool thd_connection_alive

(

THD *

thd

)

thd_init_client_charset()

bool thd_init_client_charset	(	THD *	thd,
		uint	cs_number
	)

Set thread character set variables from the given ID.

Parameters

thd	thread handle
cs_number	character set and collation ID

Return values

0	OK; character_set_client, collation_connection and character_set_results are set to the new value, or to the default global values.
1	error, e.g. the given ID is not supported by parser. Corresponding SQL error is sent.

thd_prepare_connection()

bool thd_prepare_connection

(

THD *

thd

)

Variable Documentation

hash_user_connections

collation_unordered_map<std::string, unique_ptr_my_free<user_conn> >* hash_user_connections

static