root/ext/mysqlnd/mysqlnd_structs.h

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/*
  +----------------------------------------------------------------------+
  | PHP Version 5                                                        |
  +----------------------------------------------------------------------+
  | Copyright (c) 2006-2015 The PHP Group                                |
  +----------------------------------------------------------------------+
  | This source file is subject to version 3.01 of the PHP license,      |
  | that is bundled with this package in the file LICENSE, and is        |
  | available through the world-wide-web at the following url:           |
  | http://www.php.net/license/3_01.txt                                  |
  | If you did not receive a copy of the PHP license and are unable to   |
  | obtain it through the world-wide-web, please send a note to          |
  | license@php.net so we can mail you a copy immediately.               |
  +----------------------------------------------------------------------+
  | Authors: Andrey Hristov <andrey@mysql.com>                           |
  |          Ulf Wendel <uwendel@mysql.com>                              |
  |          Georg Richter <georg@mysql.com>                             |
  +----------------------------------------------------------------------+
*/

/* $Id$ */

#ifndef MYSQLND_STRUCTS_H
#define MYSQLND_STRUCTS_H

#include "ext/standard/php_smart_str_public.h"

#define MYSQLND_TYPEDEFED_METHODS

#define MYSQLND_CLASS_METHOD_TABLE_NAME(class) mysqlnd_##class##_methods
#define MYSQLND_CLASS_METHOD_TABLE_NAME_FORWARD(class) struct st_##class##_methods MYSQLND_CLASS_METHOD_TABLE_NAME(class)

#define MYSQLND_CLASS_METHODS_START(class)      MYSQLND_CLASS_METHOD_TABLE_NAME_FORWARD(class) = {
#define MYSQLND_CLASS_METHODS_END                       }


typedef struct st_mysqlnd_memory_pool MYSQLND_MEMORY_POOL;
typedef struct st_mysqlnd_memory_pool_chunk MYSQLND_MEMORY_POOL_CHUNK;
typedef struct st_mysqlnd_memory_pool_chunk_llist MYSQLND_MEMORY_POOL_CHUNK_LLIST;


#define MYSQLND_MEMORY_POOL_CHUNK_LIST_SIZE 100

struct st_mysqlnd_memory_pool
{
        zend_uchar *arena;
        unsigned int refcount;
        unsigned int arena_size;
        unsigned int free_size;

        MYSQLND_MEMORY_POOL_CHUNK*      (*get_chunk)(MYSQLND_MEMORY_POOL * pool, unsigned int size TSRMLS_DC);
};

struct st_mysqlnd_memory_pool_chunk
{
        size_t                          app;
        MYSQLND_MEMORY_POOL     *pool;
        zend_uchar                      *ptr;
        unsigned int            size;
        enum_func_status        (*resize_chunk)(MYSQLND_MEMORY_POOL_CHUNK * chunk, unsigned int size TSRMLS_DC);
        void                            (*free_chunk)(MYSQLND_MEMORY_POOL_CHUNK * chunk TSRMLS_DC);
        zend_bool                       from_pool;
};


typedef struct st_mysqlnd_cmd_buffer
{
        zend_uchar              *buffer;
        size_t                  length;
} MYSQLND_CMD_BUFFER;


typedef struct st_mysqlnd_field
{
        const char *name;                       /* Name of column */
        const char *org_name;           /* Original column name, if an alias */
        const char *table;                      /* Table of column if column was a field */
        const char *org_table;          /* Org table name, if table was an alias */
        const char *db;                         /* Database for table */
        const char *catalog;            /* Catalog for table */
        char *def;                                      /* Default value (set by mysql_list_fields) */
        unsigned long length;           /* Width of column (create length) */
        unsigned long max_length;       /* Max width for selected set */
        unsigned int name_length;
        unsigned int org_name_length;
        unsigned int table_length;
        unsigned int org_table_length;
        unsigned int db_length;
        unsigned int catalog_length;
        unsigned int def_length;
        unsigned int flags;                     /* Diverse flags */
        unsigned int decimals;          /* Number of decimals in field */
        unsigned int charsetnr;         /* Character set */
        enum mysqlnd_field_types type;  /* Type of field. See mysql_com.h for types */
        char *root;
        size_t root_len;
} MYSQLND_FIELD;


typedef struct st_mysqlnd_upsert_result
{
        unsigned int    warning_count;
        unsigned int    server_status;
        uint64_t                affected_rows;
        uint64_t                last_insert_id;
} MYSQLND_UPSERT_STATUS;


typedef struct st_mysqlnd_error_info
{
        char error[MYSQLND_ERRMSG_SIZE+1];
        char sqlstate[MYSQLND_SQLSTATE_LENGTH + 1];
        unsigned int error_no;
        zend_llist * error_list;
} MYSQLND_ERROR_INFO;


typedef struct st_mysqlnd_error_list_element
{
        char * error;
        char sqlstate[MYSQLND_SQLSTATE_LENGTH + 1];
        unsigned int error_no;
} MYSQLND_ERROR_LIST_ELEMENT;


typedef struct st_mysqlnd_infile_info
{
        php_stream      *fd;
        int                     error_no;
        char            error_msg[MYSQLND_ERRMSG_SIZE + 1];
        const char      *filename;
} MYSQLND_INFILE_INFO;


/* character set information */
typedef struct st_mysqlnd_charset
{
        unsigned int    nr;
        const char              *name;
        const char              *collation;
        unsigned int    char_minlen;
        unsigned int    char_maxlen;
        const char              *comment;
        unsigned int    (*mb_charlen)(unsigned int c);
        unsigned int    (*mb_valid)(const char *start, const char *end);
} MYSQLND_CHARSET;


/* local infile handler */
typedef struct st_mysqlnd_infile
{
        int             (*local_infile_init)(void **ptr, char *filename, void **userdata TSRMLS_DC);
        int             (*local_infile_read)(void *ptr, zend_uchar * buf, unsigned int buf_len TSRMLS_DC);
        int             (*local_infile_error)(void *ptr, char *error_msg, unsigned int error_msg_len TSRMLS_DC);
        void    (*local_infile_end)(void *ptr TSRMLS_DC);
        zval    *callback;
        void    *userdata;
} MYSQLND_INFILE;

typedef struct st_mysqlnd_options
{
        ulong           flags;

        /* init commands - we need to send them to server directly after connect */
        unsigned int    num_commands;
        char                    **init_commands;

        /* configuration file information */
        char            *cfg_file;
        char            *cfg_section;

        char            *auth_protocol;
        /*
          We need to keep these because otherwise st_mysqlnd_conn will be changed.
          The ABI will be broken and the methods structure will be somewhere else
          in the memory which can crash external code. Feel free to reuse these.
        */
        HashTable       * connect_attr;
        char            * unused3;
        char            * unused4;
        char            * unused5;

        enum_mysqlnd_protocol_type protocol;

        char            *charset_name;
        /* maximum allowed packet size for communication */
        ulong           max_allowed_packet;

#ifdef MYSQLND_STRING_TO_INT_CONVERSION
        zend_bool       int_and_float_native;
#endif
} MYSQLND_OPTIONS;

typedef struct st_mysqlnd_net_options
{
        /* timeouts */
        unsigned int timeout_connect;
        unsigned int timeout_read;
        unsigned int timeout_write;

        size_t          net_read_buffer_size;

        /* SSL information */
        char            *ssl_key;
        char            *ssl_cert;
        char            *ssl_ca;
        char            *ssl_capath;
        char            *ssl_cipher;
        char            *ssl_passphrase;
        zend_bool       ssl_verify_peer;
        uint64_t        flags;

        char *          sha256_server_public_key;

        char *          unused1;
        char *          unused2;
        char *          unused3;
        char *          unused4;
} MYSQLND_NET_OPTIONS;


typedef struct st_mysqlnd_connection MYSQLND;
typedef struct st_mysqlnd_connection_data MYSQLND_CONN_DATA;
typedef struct st_mysqlnd_net   MYSQLND_NET;
typedef struct st_mysqlnd_net_data      MYSQLND_NET_DATA;
typedef struct st_mysqlnd_protocol      MYSQLND_PROTOCOL;
typedef struct st_mysqlnd_res   MYSQLND_RES;
typedef char**                                  MYSQLND_ROW_C;          /* return data as array of strings */
typedef struct st_mysqlnd_stmt_data     MYSQLND_STMT_DATA;
typedef struct st_mysqlnd_stmt  MYSQLND_STMT;
typedef unsigned int                    MYSQLND_FIELD_OFFSET;

typedef struct st_mysqlnd_param_bind MYSQLND_PARAM_BIND;

typedef struct st_mysqlnd_result_bind MYSQLND_RESULT_BIND;

typedef struct st_mysqlnd_result_metadata MYSQLND_RES_METADATA;
typedef struct st_mysqlnd_buffered_result MYSQLND_RES_BUFFERED;
typedef struct st_mysqlnd_unbuffered_result MYSQLND_RES_UNBUFFERED;

typedef struct st_mysqlnd_debug MYSQLND_DEBUG;


typedef MYSQLND_RES* (*mysqlnd_stmt_use_or_store_func)(MYSQLND_STMT * const TSRMLS_DC);
typedef enum_func_status  (*mysqlnd_fetch_row_func)(MYSQLND_RES *result,
                                                                                                        void *param,
                                                                                                        unsigned int flags,
                                                                                                        zend_bool *fetched_anything
                                                                                                        TSRMLS_DC);

typedef struct st_mysqlnd_stats MYSQLND_STATS;

typedef void (*mysqlnd_stat_trigger)(MYSQLND_STATS * stats, enum_mysqlnd_collected_stats stat, int64_t change TSRMLS_DC);

struct st_mysqlnd_stats
{
        uint64_t                                *values;
        mysqlnd_stat_trigger    *triggers;
        size_t                                  count;
        zend_bool                               in_trigger;
#ifdef ZTS
        MUTEX_T LOCK_access;
#endif
};


typedef struct st_mysqlnd_read_buffer {
        zend_uchar      * data;
        size_t          offset;
        size_t          size;
        size_t          len;
        zend_bool       (*is_empty)(struct st_mysqlnd_read_buffer *);
        void            (*read)(struct st_mysqlnd_read_buffer *, size_t count, zend_uchar * dest);
        size_t          (*bytes_left)(struct st_mysqlnd_read_buffer *);
        void            (*free_buffer)(struct st_mysqlnd_read_buffer ** TSRMLS_DC);
} MYSQLND_READ_BUFFER;



typedef enum_func_status        (*func_mysqlnd_net__set_client_option)(MYSQLND_NET * const net, enum_mysqlnd_option option, const char * const value TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_net__decode)(zend_uchar * uncompressed_data, const size_t uncompressed_data_len, const zend_uchar * const compressed_data, const size_t compressed_data_len TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_net__encode)(zend_uchar * compress_buffer, size_t * compress_buffer_len, const zend_uchar * const uncompressed_data, const size_t uncompressed_data_len TSRMLS_DC);
typedef size_t                          (*func_mysqlnd_net__consume_uneaten_data)(MYSQLND_NET * const net, enum php_mysqlnd_server_command cmd TSRMLS_DC);
typedef void                            (*func_mysqlnd_net__free_contents)(MYSQLND_NET * net TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_net__enable_ssl)(MYSQLND_NET * const net TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_net__disable_ssl)(MYSQLND_NET * const net TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_net__network_read_ex)(MYSQLND_NET * const net, zend_uchar * const buffer, const size_t count, MYSQLND_STATS * const stats, MYSQLND_ERROR_INFO * const error_info TSRMLS_DC);
typedef size_t                          (*func_mysqlnd_net__network_write_ex)(MYSQLND_NET * const net, const zend_uchar * const buf, const size_t count, MYSQLND_STATS * const stats, MYSQLND_ERROR_INFO * const error_info TSRMLS_DC);
typedef size_t                          (*func_mysqlnd_net__send_ex)(MYSQLND_NET * const net, zend_uchar * const buffer, const size_t count, MYSQLND_STATS * const conn_stats, MYSQLND_ERROR_INFO * const error_info TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_net__receive_ex)(MYSQLND_NET * const net, zend_uchar * const buffer, const size_t count, MYSQLND_STATS * const conn_stats, MYSQLND_ERROR_INFO * const error_info TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_net__init)(MYSQLND_NET * const net, MYSQLND_STATS * const stats, MYSQLND_ERROR_INFO * const error_info TSRMLS_DC);
typedef void                            (*func_mysqlnd_net__dtor)(MYSQLND_NET * const net, MYSQLND_STATS * const conn_stats, MYSQLND_ERROR_INFO * const error_info TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_net__connect_ex)(MYSQLND_NET * const net, const char * const scheme, const size_t scheme_len, const zend_bool persistent, MYSQLND_STATS * const conn_stats, MYSQLND_ERROR_INFO * const error_info TSRMLS_DC);
typedef void                            (*func_mysqlnd_net__close_stream)(MYSQLND_NET * const net, MYSQLND_STATS * const conn_stats, MYSQLND_ERROR_INFO * const error_info TSRMLS_DC);
typedef php_stream *            (*func_mysqlnd_net__open_stream)(MYSQLND_NET * const net, const char * const scheme, const size_t scheme_len, const zend_bool persistent, MYSQLND_STATS * const conn_stats, MYSQLND_ERROR_INFO * const error_info TSRMLS_DC);
typedef php_stream *            (*func_mysqlnd_net__get_stream)(const MYSQLND_NET * const net TSRMLS_DC);
typedef php_stream *            (*func_mysqlnd_net__set_stream)(MYSQLND_NET * const net, php_stream * net_stream TSRMLS_DC);
typedef func_mysqlnd_net__open_stream (*func_mysqlnd_net__get_open_stream)(MYSQLND_NET * const net, const char * const scheme, const size_t scheme_len, MYSQLND_ERROR_INFO * const error_info TSRMLS_DC);
typedef void                            (*func_mysqlnd_net__post_connect_set_opt)(MYSQLND_NET * const net, const char * const scheme, const size_t scheme_len, MYSQLND_STATS * const conn_stats, MYSQLND_ERROR_INFO * const error_info TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_net__read_compressed_packet_from_stream_and_fill_read_buffer)(MYSQLND_NET * net, size_t net_payload_size, MYSQLND_STATS * conn_stats, MYSQLND_ERROR_INFO * error_info TSRMLS_DC);

struct st_mysqlnd_net_methods
{
        func_mysqlnd_net__init init;
        func_mysqlnd_net__dtor dtor;
        func_mysqlnd_net__connect_ex connect_ex;
        func_mysqlnd_net__close_stream close_stream;
        func_mysqlnd_net__open_stream open_pipe;
        func_mysqlnd_net__open_stream open_tcp_or_unix;

        func_mysqlnd_net__get_stream get_stream;
        func_mysqlnd_net__set_stream set_stream;
        func_mysqlnd_net__get_open_stream get_open_stream;

        func_mysqlnd_net__post_connect_set_opt post_connect_set_opt;

        func_mysqlnd_net__set_client_option set_client_option;
        func_mysqlnd_net__decode decode;
        func_mysqlnd_net__encode encode;
        func_mysqlnd_net__consume_uneaten_data consume_uneaten_data;
        func_mysqlnd_net__free_contents free_contents;
        func_mysqlnd_net__enable_ssl enable_ssl;
        func_mysqlnd_net__disable_ssl disable_ssl;

        func_mysqlnd_net__network_read_ex network_read_ex;
        func_mysqlnd_net__network_write_ex network_write_ex;
        func_mysqlnd_net__send_ex send_ex;
        func_mysqlnd_net__receive_ex receive_ex;

        func_mysqlnd_net__read_compressed_packet_from_stream_and_fill_read_buffer read_compressed_packet_from_stream_and_fill_read_buffer;

        void * unused1;
        void * unused2;
        void * unused3;
        void * unused4;
        void * unused5;
};


struct st_mysqlnd_packet_greet;
struct st_mysqlnd_packet_greet;
struct st_mysqlnd_packet_auth;
struct st_mysqlnd_packet_ok;
struct st_mysqlnd_packet_command;
struct st_mysqlnd_packet_eof;
struct st_mysqlnd_packet_rset_header;
struct st_mysqlnd_packet_res_field;
struct st_mysqlnd_packet_row;
struct st_mysqlnd_packet_stats;
struct st_mysqlnd_packet_prepare_response;
struct st_mysqlnd_packet_chg_user_resp;
struct st_mysqlnd_packet_auth_pam;
struct st_mysqlnd_packet_sha256_pk_request;
struct st_mysqlnd_packet_sha256_pk_request_response;

typedef struct st_mysqlnd_packet_greet *                (*func_mysqlnd_protocol__get_greet_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_auth *                 (*func_mysqlnd_protocol__get_auth_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_auth_response *(*func_mysqlnd_protocol__get_auth_response_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_change_auth_response * (*func_mysqlnd_protocol__get_change_auth_response_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_ok *                   (*func_mysqlnd_protocol__get_ok_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_command *              (*func_mysqlnd_protocol__get_command_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_eof *                  (*func_mysqlnd_protocol__get_eof_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_rset_header *  (*func_mysqlnd_protocol__get_rset_header_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_res_field *    (*func_mysqlnd_protocol__get_result_field_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_row *                  (*func_mysqlnd_protocol__get_row_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_stats *                (*func_mysqlnd_protocol__get_stats_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_prepare_response *(*func_mysqlnd_protocol__get_prepare_response_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_chg_user_resp*(*func_mysqlnd_protocol__get_change_user_response_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_sha256_pk_request *(*func_mysqlnd_protocol__get_sha256_pk_request_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_sha256_pk_request_response *(*func_mysqlnd_protocol__get_sha256_pk_request_response_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);

struct st_mysqlnd_protocol_methods
{
        func_mysqlnd_protocol__get_greet_packet get_greet_packet;
        func_mysqlnd_protocol__get_auth_packet get_auth_packet;
        func_mysqlnd_protocol__get_auth_response_packet get_auth_response_packet;
        func_mysqlnd_protocol__get_change_auth_response_packet get_change_auth_response_packet;
        func_mysqlnd_protocol__get_ok_packet get_ok_packet;
        func_mysqlnd_protocol__get_command_packet get_command_packet;
        func_mysqlnd_protocol__get_eof_packet get_eof_packet;
        func_mysqlnd_protocol__get_rset_header_packet get_rset_header_packet;
        func_mysqlnd_protocol__get_result_field_packet get_result_field_packet;
        func_mysqlnd_protocol__get_row_packet get_row_packet;
        func_mysqlnd_protocol__get_stats_packet get_stats_packet;
        func_mysqlnd_protocol__get_prepare_response_packet get_prepare_response_packet;
        func_mysqlnd_protocol__get_change_user_response_packet get_change_user_response_packet;
        func_mysqlnd_protocol__get_sha256_pk_request_packet get_sha256_pk_request_packet;
        func_mysqlnd_protocol__get_sha256_pk_request_response_packet get_sha256_pk_request_response_packet;

        void * unused1;
        void * unused2;
        void * unused3;
};


typedef MYSQLND * (*func_mysqlnd_object_factory__get_connection)(zend_bool persistent TSRMLS_DC);
typedef MYSQLND * (*func_mysqlnd_object_factory__clone_connection_object)(MYSQLND * conn TSRMLS_DC);
typedef MYSQLND_STMT * (*func_mysqlnd_object_factory__get_prepared_statement)(MYSQLND_CONN_DATA * conn TSRMLS_DC);
typedef MYSQLND_NET * (*func_mysqlnd_object_factory__get_io_channel)(zend_bool persistent, MYSQLND_STATS * stats, MYSQLND_ERROR_INFO * error_info TSRMLS_DC);
typedef MYSQLND_PROTOCOL * (*func_mysqlnd_object_factory__get_protocol_decoder)(zend_bool persistent TSRMLS_DC);


struct st_mysqlnd_object_factory_methods
{
        func_mysqlnd_object_factory__get_connection get_connection;
        func_mysqlnd_object_factory__clone_connection_object clone_connection_object;
        func_mysqlnd_object_factory__get_prepared_statement get_prepared_statement;
        func_mysqlnd_object_factory__get_io_channel get_io_channel;
        func_mysqlnd_object_factory__get_protocol_decoder get_protocol_decoder;
};


typedef enum_func_status        (*func_mysqlnd_conn_data__init)(MYSQLND_CONN_DATA * conn TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__connect)(MYSQLND_CONN_DATA * conn, const char * host, const char * user, const char * passwd, unsigned int passwd_len, const char * db, unsigned int db_len, unsigned int port, const char * socket_or_pipe, unsigned int mysql_flags TSRMLS_DC);
typedef ulong                           (*func_mysqlnd_conn_data__escape_string)(MYSQLND_CONN_DATA * const conn, char *newstr, const char *escapestr, size_t escapestr_len TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__set_charset)(MYSQLND_CONN_DATA * const conn, const char * const charset TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__query)(MYSQLND_CONN_DATA * conn, const char * query, unsigned int query_len TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__send_query)(MYSQLND_CONN_DATA * conn, const char *query, unsigned int query_len TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__reap_query)(MYSQLND_CONN_DATA * conn TSRMLS_DC);
typedef MYSQLND_RES *           (*func_mysqlnd_conn_data__use_result)(MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef MYSQLND_RES *           (*func_mysqlnd_conn_data__store_result)(MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__next_result)(MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef zend_bool                       (*func_mysqlnd_conn_data__more_results)(const MYSQLND_CONN_DATA * const conn TSRMLS_DC);

typedef MYSQLND_STMT *          (*func_mysqlnd_conn_data__stmt_init)(MYSQLND_CONN_DATA * const conn TSRMLS_DC);

typedef enum_func_status        (*func_mysqlnd_conn_data__shutdown_server)(MYSQLND_CONN_DATA * const conn, uint8_t level TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__refresh_server)(MYSQLND_CONN_DATA * const conn, uint8_t options TSRMLS_DC);

typedef enum_func_status        (*func_mysqlnd_conn_data__ping)(MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__kill_connection)(MYSQLND_CONN_DATA * conn, unsigned int pid TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__select_db)(MYSQLND_CONN_DATA * const conn, const char * const db, unsigned int db_len TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__server_dump_debug_information)(MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__change_user)(MYSQLND_CONN_DATA * const conn, const char * user, const char * passwd, const char * db, zend_bool silent, size_t passwd_len TSRMLS_DC);

typedef unsigned int            (*func_mysqlnd_conn_data__get_error_no)(const MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef const char *            (*func_mysqlnd_conn_data__get_error_str)(const MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef const char *            (*func_mysqlnd_conn_data__get_sqlstate)(const MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef uint64_t                        (*func_mysqlnd_conn_data__get_thread_id)(const MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef void                            (*func_mysqlnd_conn_data__get_statistics)(const MYSQLND_CONN_DATA * const conn, zval *return_value TSRMLS_DC ZEND_FILE_LINE_DC);

typedef unsigned long           (*func_mysqlnd_conn_data__get_server_version)(const MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef const char *            (*func_mysqlnd_conn_data__get_server_information)(const MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__get_server_statistics)(MYSQLND_CONN_DATA * conn, char **message, unsigned int * message_len TSRMLS_DC);
typedef const char *            (*func_mysqlnd_conn_data__get_host_information)(const MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef unsigned int            (*func_mysqlnd_conn_data__get_protocol_information)(const MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef const char *            (*func_mysqlnd_conn_data__get_last_message)(const MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef const char *            (*func_mysqlnd_conn_data__charset_name)(const MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef MYSQLND_RES *           (*func_mysqlnd_conn_data__list_fields)(MYSQLND_CONN_DATA * conn, const char * table, const char * achtung_wild TSRMLS_DC);
typedef MYSQLND_RES *           (*func_mysqlnd_conn_data__list_method)(MYSQLND_CONN_DATA * conn, const char * query, const char * achtung_wild, char *par1 TSRMLS_DC);

typedef uint64_t                        (*func_mysqlnd_conn_data__get_last_insert_id)(const MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef uint64_t                        (*func_mysqlnd_conn_data__get_affected_rows)(const MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef unsigned int            (*func_mysqlnd_conn_data__get_warning_count)(const MYSQLND_CONN_DATA * const conn TSRMLS_DC);

typedef unsigned int            (*func_mysqlnd_conn_data__get_field_count)(const MYSQLND_CONN_DATA * const conn TSRMLS_DC);

typedef unsigned int            (*func_mysqlnd_conn_data__get_server_status)(const MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__set_server_option)(MYSQLND_CONN_DATA * const conn, enum_mysqlnd_server_option option TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__set_client_option)(MYSQLND_CONN_DATA * const conn, enum_mysqlnd_option option, const char * const value TSRMLS_DC);
typedef void                            (*func_mysqlnd_conn_data__free_contents)(MYSQLND_CONN_DATA * conn TSRMLS_DC);/* private */
typedef void                            (*func_mysqlnd_conn_data__free_options)(MYSQLND_CONN_DATA * conn TSRMLS_DC);    /* private */
typedef void                            (*func_mysqlnd_conn_data__dtor)(MYSQLND_CONN_DATA * conn TSRMLS_DC);    /* private */

typedef enum_func_status        (*func_mysqlnd_conn_data__query_read_result_set_header)(MYSQLND_CONN_DATA * conn, MYSQLND_STMT * stmt TSRMLS_DC);

typedef MYSQLND_CONN_DATA *     (*func_mysqlnd_conn_data__get_reference)(MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__free_reference)(MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef enum mysqlnd_connection_state (*func_mysqlnd_conn_data__get_state)(const MYSQLND_CONN_DATA * const conn TSRMLS_DC);
typedef void                            (*func_mysqlnd_conn_data__set_state)(MYSQLND_CONN_DATA * const conn, enum mysqlnd_connection_state new_state TSRMLS_DC);

typedef enum_func_status        (*func_mysqlnd_conn_data__simple_command)(MYSQLND_CONN_DATA * conn, enum php_mysqlnd_server_command command, const zend_uchar * const arg, size_t arg_len, enum mysqlnd_packet_type ok_packet, zend_bool silent, zend_bool ignore_upsert_status TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__simple_command_handle_response)(MYSQLND_CONN_DATA * conn, enum mysqlnd_packet_type ok_packet, zend_bool silent, enum php_mysqlnd_server_command command, zend_bool ignore_upsert_status TSRMLS_DC);

typedef enum_func_status        (*func_mysqlnd_conn_data__restart_psession)(MYSQLND_CONN_DATA * conn TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__end_psession)(MYSQLND_CONN_DATA * conn TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__send_close)(MYSQLND_CONN_DATA * conn TSRMLS_DC);

typedef enum_func_status    (*func_mysqlnd_conn_data__ssl_set)(MYSQLND_CONN_DATA * const conn, const char * key, const char * const cert, const char * const ca, const char * const capath, const char * const cipher TSRMLS_DC);

typedef MYSQLND_RES *           (*func_mysqlnd_conn_data__result_init)(unsigned int field_count, zend_bool persistent TSRMLS_DC);

typedef enum_func_status        (*func_mysqlnd_conn_data__set_autocommit)(MYSQLND_CONN_DATA * conn, unsigned int mode TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__tx_commit)(MYSQLND_CONN_DATA * conn TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__tx_rollback)(MYSQLND_CONN_DATA * conn TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__tx_begin)(MYSQLND_CONN_DATA * conn, const unsigned int mode, const char * const name TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__tx_commit_or_rollback)(MYSQLND_CONN_DATA * conn, const zend_bool commit, const unsigned int flags, const char * const name TSRMLS_DC);
typedef void                            (*func_mysqlnd_conn_data__tx_cor_options_to_string)(const MYSQLND_CONN_DATA * const conn, smart_str * tmp_str, const unsigned int mode TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__tx_savepoint)(MYSQLND_CONN_DATA * conn, const char * const name TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__tx_savepoint_release)(MYSQLND_CONN_DATA * conn, const char * const name TSRMLS_DC);

typedef enum_func_status        (*func_mysqlnd_conn_data__local_tx_start)(MYSQLND_CONN_DATA * conn, size_t this_func TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__local_tx_end)(MYSQLND_CONN_DATA * conn, size_t this_func, enum_func_status status TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__execute_init_commands)(MYSQLND_CONN_DATA * conn TSRMLS_DC);
typedef unsigned int            (*func_mysqlnd_conn_data__get_updated_connect_flags)(MYSQLND_CONN_DATA * conn, unsigned int mysql_flags TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__connect_handshake)(MYSQLND_CONN_DATA * conn, const char * const host, const char * const user, const char * const passwd, const unsigned int passwd_len, const char * const db, const unsigned int db_len, const unsigned int mysql_flags TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn_data__simple_command_send_request)(MYSQLND_CONN_DATA * conn, enum php_mysqlnd_server_command command, const zend_uchar * const arg, size_t arg_len, zend_bool silent, zend_bool ignore_upsert_status TSRMLS_DC);
typedef struct st_mysqlnd_authentication_plugin * (*func_mysqlnd_conn_data__fetch_auth_plugin_by_name)(const char * const requested_protocol TSRMLS_DC);

typedef enum_func_status        (*func_mysqlnd_conn_data__set_client_option_2d)(MYSQLND_CONN_DATA * const conn, enum mysqlnd_option option, const char * const key, const char * const value TSRMLS_DC);

struct st_mysqlnd_conn_data_methods
{
        func_mysqlnd_conn_data__init init;
        func_mysqlnd_conn_data__connect connect;
        func_mysqlnd_conn_data__escape_string escape_string;
        func_mysqlnd_conn_data__set_charset set_charset;
        func_mysqlnd_conn_data__query query;
        func_mysqlnd_conn_data__send_query send_query;
        func_mysqlnd_conn_data__reap_query reap_query;
        func_mysqlnd_conn_data__use_result use_result;
        func_mysqlnd_conn_data__store_result store_result;
        func_mysqlnd_conn_data__next_result next_result;
        func_mysqlnd_conn_data__more_results more_results;

        func_mysqlnd_conn_data__stmt_init stmt_init;

        func_mysqlnd_conn_data__shutdown_server shutdown_server;
        func_mysqlnd_conn_data__refresh_server refresh_server;

        func_mysqlnd_conn_data__ping ping;
        func_mysqlnd_conn_data__kill_connection kill_connection;
        func_mysqlnd_conn_data__select_db select_db;
        func_mysqlnd_conn_data__server_dump_debug_information server_dump_debug_information;
        func_mysqlnd_conn_data__change_user change_user;

        func_mysqlnd_conn_data__get_error_no get_error_no;
        func_mysqlnd_conn_data__get_error_str get_error_str;
        func_mysqlnd_conn_data__get_sqlstate get_sqlstate;
        func_mysqlnd_conn_data__get_thread_id get_thread_id;
        func_mysqlnd_conn_data__get_statistics get_statistics;

        func_mysqlnd_conn_data__get_server_version get_server_version;
        func_mysqlnd_conn_data__get_server_information get_server_information;
        func_mysqlnd_conn_data__get_server_statistics get_server_statistics;
        func_mysqlnd_conn_data__get_host_information get_host_information;
        func_mysqlnd_conn_data__get_protocol_information get_protocol_information;
        func_mysqlnd_conn_data__get_last_message get_last_message;
        func_mysqlnd_conn_data__charset_name charset_name;
        func_mysqlnd_conn_data__list_fields list_fields;
        func_mysqlnd_conn_data__list_method list_method;

        func_mysqlnd_conn_data__get_last_insert_id get_last_insert_id;
        func_mysqlnd_conn_data__get_affected_rows get_affected_rows;
        func_mysqlnd_conn_data__get_warning_count get_warning_count;

        func_mysqlnd_conn_data__get_field_count get_field_count;

        func_mysqlnd_conn_data__get_server_status get_server_status;
        
        func_mysqlnd_conn_data__set_server_option set_server_option;
        func_mysqlnd_conn_data__set_client_option set_client_option;
        func_mysqlnd_conn_data__free_contents free_contents;
        func_mysqlnd_conn_data__free_options free_options;
        func_mysqlnd_conn_data__dtor dtor;

        func_mysqlnd_conn_data__query_read_result_set_header query_read_result_set_header;

        func_mysqlnd_conn_data__get_reference get_reference;
        func_mysqlnd_conn_data__free_reference free_reference;
        func_mysqlnd_conn_data__get_state get_state;
        func_mysqlnd_conn_data__set_state set_state;

        func_mysqlnd_conn_data__simple_command simple_command;
        func_mysqlnd_conn_data__simple_command_handle_response simple_command_handle_response;

        func_mysqlnd_conn_data__restart_psession restart_psession;
        func_mysqlnd_conn_data__end_psession end_psession;
        func_mysqlnd_conn_data__send_close send_close;

        func_mysqlnd_conn_data__ssl_set ssl_set;

        func_mysqlnd_conn_data__result_init result_init;
        func_mysqlnd_conn_data__set_autocommit set_autocommit;
        func_mysqlnd_conn_data__tx_commit tx_commit;
        func_mysqlnd_conn_data__tx_rollback tx_rollback;
        func_mysqlnd_conn_data__tx_begin tx_begin;
        func_mysqlnd_conn_data__tx_commit_or_rollback tx_commit_or_rollback;
        func_mysqlnd_conn_data__tx_cor_options_to_string tx_cor_options_to_string;
        func_mysqlnd_conn_data__tx_savepoint tx_savepoint;
        func_mysqlnd_conn_data__tx_savepoint_release tx_savepoint_release;

        func_mysqlnd_conn_data__local_tx_start local_tx_start;
        func_mysqlnd_conn_data__local_tx_end local_tx_end;

        func_mysqlnd_conn_data__execute_init_commands execute_init_commands;
        func_mysqlnd_conn_data__get_updated_connect_flags get_updated_connect_flags;
        func_mysqlnd_conn_data__connect_handshake connect_handshake;
        func_mysqlnd_conn_data__simple_command_send_request simple_command_send_request;
        func_mysqlnd_conn_data__fetch_auth_plugin_by_name fetch_auth_plugin_by_name;

        func_mysqlnd_conn_data__set_client_option_2d set_client_option_2d;
};


typedef enum_func_status        (*func_mysqlnd_data__connect)(MYSQLND * conn, const char * host, const char * user, const char * passwd, unsigned int passwd_len, const char * db, unsigned int db_len, unsigned int port, const char * socket_or_pipe, unsigned int mysql_flags TSRMLS_DC);
typedef MYSQLND *                       (*func_mysqlnd_conn__clone_object)(MYSQLND * const conn TSRMLS_DC);
typedef void                            (*func_mysqlnd_conn__dtor)(MYSQLND * conn TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_conn__close)(MYSQLND * conn, enum_connection_close_type close_type TSRMLS_DC);

struct st_mysqlnd_conn_methods
{
        func_mysqlnd_data__connect connect;
        func_mysqlnd_conn__clone_object clone_object;
        func_mysqlnd_conn__dtor dtor;
        func_mysqlnd_conn__close close;
};


typedef mysqlnd_fetch_row_func  fetch_row;
typedef mysqlnd_fetch_row_func  fetch_row_normal_buffered; /* private */
typedef mysqlnd_fetch_row_func  fetch_row_normal_unbuffered; /* private */

typedef MYSQLND_RES *           (*func_mysqlnd_res__use_result)(MYSQLND_RES * const result, zend_bool ps_protocol TSRMLS_DC);
typedef MYSQLND_RES *           (*func_mysqlnd_res__store_result)(MYSQLND_RES * result, MYSQLND_CONN_DATA * const conn, zend_bool ps TSRMLS_DC);
typedef void                            (*func_mysqlnd_res__fetch_into)(MYSQLND_RES *result, unsigned int flags, zval *return_value, enum_mysqlnd_extension ext TSRMLS_DC ZEND_FILE_LINE_DC);
typedef MYSQLND_ROW_C           (*func_mysqlnd_res__fetch_row_c)(MYSQLND_RES *result TSRMLS_DC);
typedef void                            (*func_mysqlnd_res__fetch_all)(MYSQLND_RES *result, unsigned int flags, zval *return_value TSRMLS_DC ZEND_FILE_LINE_DC);
typedef void                            (*func_mysqlnd_res__fetch_field_data)(MYSQLND_RES *result, unsigned int offset, zval *return_value TSRMLS_DC);
typedef uint64_t                        (*func_mysqlnd_res__num_rows)(const MYSQLND_RES * const result TSRMLS_DC);
typedef unsigned int            (*func_mysqlnd_res__num_fields)(const MYSQLND_RES * const result TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_res__skip_result)(MYSQLND_RES * const result TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_res__seek_data)(MYSQLND_RES * result, uint64_t row TSRMLS_DC);
typedef MYSQLND_FIELD_OFFSET (*func_mysqlnd_res__seek_field)(MYSQLND_RES * const result, MYSQLND_FIELD_OFFSET field_offset TSRMLS_DC);
typedef MYSQLND_FIELD_OFFSET (*func_mysqlnd_res__field_tell)(const MYSQLND_RES * const result TSRMLS_DC);
typedef const MYSQLND_FIELD *(*func_mysqlnd_res__fetch_field)(MYSQLND_RES * const result TSRMLS_DC);
typedef const MYSQLND_FIELD *(*func_mysqlnd_res__fetch_field_direct)(MYSQLND_RES * const result, MYSQLND_FIELD_OFFSET fieldnr TSRMLS_DC);
typedef const MYSQLND_FIELD *(*func_mysqlnd_res__fetch_fields)(MYSQLND_RES * const result TSRMLS_DC);

typedef enum_func_status        (*func_mysqlnd_res__read_result_metadata)(MYSQLND_RES * result, MYSQLND_CONN_DATA * conn TSRMLS_DC);
typedef unsigned long *         (*func_mysqlnd_res__fetch_lengths)(MYSQLND_RES * const result TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_res__store_result_fetch_data)(MYSQLND_CONN_DATA * const conn, MYSQLND_RES * result, MYSQLND_RES_METADATA *meta, zend_bool binary_protocol TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_res__initialize_result_set_rest)(MYSQLND_RES * const result TSRMLS_DC);

typedef void                            (*func_mysqlnd_res__free_result_buffers)(MYSQLND_RES * result TSRMLS_DC);       /* private */
typedef enum_func_status        (*func_mysqlnd_res__free_result)(MYSQLND_RES * result, zend_bool implicit TSRMLS_DC);
typedef void                            (*func_mysqlnd_res__free_result_internal)(MYSQLND_RES *result TSRMLS_DC);
typedef void                            (*func_mysqlnd_res__free_result_contents)(MYSQLND_RES *result TSRMLS_DC);
typedef void                            (*func_mysqlnd_res__free_buffered_data)(MYSQLND_RES *result TSRMLS_DC);
typedef void                            (*func_mysqlnd_res__unbuffered_free_last_data)(MYSQLND_RES *result TSRMLS_DC);

        /* for decoding - binary or text protocol */
typedef enum_func_status        (*func_mysqlnd_res__row_decoder)(MYSQLND_MEMORY_POOL_CHUNK * row_buffer, zval ** fields,
                                                                        unsigned int field_count, const MYSQLND_FIELD * fields_metadata,
                                                                        zend_bool as_int_or_float, MYSQLND_STATS * stats TSRMLS_DC);

typedef MYSQLND_RES_METADATA * (*func_mysqlnd_res__result_meta_init)(unsigned int field_count, zend_bool persistent TSRMLS_DC);

struct st_mysqlnd_res_methods
{
        mysqlnd_fetch_row_func  fetch_row;
        mysqlnd_fetch_row_func  fetch_row_normal_buffered; /* private */
        mysqlnd_fetch_row_func  fetch_row_normal_unbuffered; /* private */

        func_mysqlnd_res__use_result use_result;
        func_mysqlnd_res__store_result store_result;
        func_mysqlnd_res__fetch_into fetch_into;
        func_mysqlnd_res__fetch_row_c fetch_row_c;
        func_mysqlnd_res__fetch_all fetch_all;
        func_mysqlnd_res__fetch_field_data fetch_field_data;
        func_mysqlnd_res__num_rows num_rows;
        func_mysqlnd_res__num_fields num_fields;
        func_mysqlnd_res__skip_result skip_result;
        func_mysqlnd_res__seek_data seek_data;
        func_mysqlnd_res__seek_field seek_field;
        func_mysqlnd_res__field_tell field_tell;
        func_mysqlnd_res__fetch_field fetch_field;
        func_mysqlnd_res__fetch_field_direct fetch_field_direct;
        func_mysqlnd_res__fetch_fields fetch_fields;
        func_mysqlnd_res__read_result_metadata read_result_metadata;
        func_mysqlnd_res__fetch_lengths fetch_lengths;
        func_mysqlnd_res__store_result_fetch_data store_result_fetch_data;
        func_mysqlnd_res__initialize_result_set_rest initialize_result_set_rest;
        func_mysqlnd_res__free_result_buffers free_result_buffers;
        func_mysqlnd_res__free_result free_result;
        func_mysqlnd_res__free_result_internal free_result_internal;
        func_mysqlnd_res__free_result_contents free_result_contents;
        func_mysqlnd_res__free_buffered_data free_buffered_data;
        func_mysqlnd_res__unbuffered_free_last_data unbuffered_free_last_data;

        /* for decoding - binary or text protocol */
        func_mysqlnd_res__row_decoder row_decoder;

        func_mysqlnd_res__result_meta_init result_meta_init;

        void * unused1;
        void * unused2;
        void * unused3;
        void * unused4;
        void * unused5;
};


typedef const MYSQLND_FIELD *   (*func_mysqlnd_res_meta__fetch_field)(MYSQLND_RES_METADATA * const meta TSRMLS_DC);
typedef const MYSQLND_FIELD *   (*func_mysqlnd_res_meta__fetch_field_direct)(const MYSQLND_RES_METADATA * const meta, MYSQLND_FIELD_OFFSET fieldnr TSRMLS_DC);
typedef const MYSQLND_FIELD *   (*func_mysqlnd_res_meta__fetch_fields)(MYSQLND_RES_METADATA * const meta TSRMLS_DC);
typedef MYSQLND_FIELD_OFFSET    (*func_mysqlnd_res_meta__field_tell)(const MYSQLND_RES_METADATA * const meta TSRMLS_DC);
typedef enum_func_status                (*func_mysqlnd_res_meta__read_metadata)(MYSQLND_RES_METADATA * const meta, MYSQLND_CONN_DATA * conn TSRMLS_DC);
typedef MYSQLND_RES_METADATA *  (*func_mysqlnd_res_meta__clone_metadata)(const MYSQLND_RES_METADATA * const meta, zend_bool persistent TSRMLS_DC);
typedef void                                    (*func_mysqlnd_res_meta__free_metadata)(MYSQLND_RES_METADATA * meta TSRMLS_DC);

struct st_mysqlnd_res_meta_methods
{
        func_mysqlnd_res_meta__fetch_field fetch_field;
        func_mysqlnd_res_meta__fetch_field_direct fetch_field_direct;
        func_mysqlnd_res_meta__fetch_fields fetch_fields;
        func_mysqlnd_res_meta__field_tell field_tell;
        func_mysqlnd_res_meta__read_metadata read_metadata;
        func_mysqlnd_res_meta__clone_metadata clone_metadata;
        func_mysqlnd_res_meta__free_metadata free_metadata;
};


typedef enum_func_status        (*func_mysqlnd_stmt__prepare)(MYSQLND_STMT * const stmt, const char * const query, unsigned int query_len TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_stmt__execute)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef MYSQLND_RES *           (*func_mysqlnd_stmt__use_result)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef MYSQLND_RES *           (*func_mysqlnd_stmt__store_result)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef MYSQLND_RES *           (*func_mysqlnd_stmt__get_result)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef zend_bool                       (*func_mysqlnd_stmt__more_results)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_stmt__next_result)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_stmt__free_result)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_stmt__seek_data)(const MYSQLND_STMT * const stmt, uint64_t row TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_stmt__reset)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_stmt__net_close)(MYSQLND_STMT * const stmt, zend_bool implicit TSRMLS_DC); /* private */
typedef enum_func_status        (*func_mysqlnd_stmt__dtor)(MYSQLND_STMT * const stmt, zend_bool implicit TSRMLS_DC); /* use this for mysqlnd_stmt_close */
typedef enum_func_status        (*func_mysqlnd_stmt__fetch)(MYSQLND_STMT * const stmt, zend_bool * const fetched_anything TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_stmt__bind_parameters)(MYSQLND_STMT * const stmt, MYSQLND_PARAM_BIND * const param_bind TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_stmt__bind_one_parameter)(MYSQLND_STMT * const stmt, unsigned int param_no, zval * const zv, zend_uchar  type TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_stmt__refresh_bind_param)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_stmt__bind_result)(MYSQLND_STMT * const stmt, MYSQLND_RESULT_BIND * const result_bind TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_stmt__bind_one_result)(MYSQLND_STMT * const stmt, unsigned int param_no TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_stmt__send_long_data)(MYSQLND_STMT * const stmt, unsigned int param_num, const char * const data, unsigned long length TSRMLS_DC);
typedef MYSQLND_RES *           (*func_mysqlnd_stmt__get_parameter_metadata)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef MYSQLND_RES *           (*func_mysqlnd_stmt__get_result_metadata)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef uint64_t                        (*func_mysqlnd_stmt__get_last_insert_id)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef uint64_t                        (*func_mysqlnd_stmt__get_affected_rows)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef uint64_t                        (*func_mysqlnd_stmt__get_num_rows)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef unsigned int            (*func_mysqlnd_stmt__get_param_count)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef unsigned int            (*func_mysqlnd_stmt__get_field_count)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef unsigned int            (*func_mysqlnd_stmt__get_warning_count)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef unsigned int            (*func_mysqlnd_stmt__get_error_no)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef const char *            (*func_mysqlnd_stmt__get_error_str)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef const char *            (*func_mysqlnd_stmt__get_sqlstate)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_stmt__get_attribute)(const MYSQLND_STMT * const stmt, enum mysqlnd_stmt_attr attr_type, void * const value TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_stmt__set_attribute)(MYSQLND_STMT * const stmt, enum mysqlnd_stmt_attr attr_type, const void * const value TSRMLS_DC);
typedef MYSQLND_PARAM_BIND *(*func_mysqlnd_stmt__alloc_param_bind)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef MYSQLND_RESULT_BIND*(*func_mysqlnd_stmt__alloc_result_bind)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef void                            (*func_mysqlnd_stmt__free_parameter_bind)(MYSQLND_STMT * const stmt, MYSQLND_PARAM_BIND * TSRMLS_DC);
typedef void                            (*func_mysqlnd_stmt__free_result_bind)(MYSQLND_STMT * const stmt, MYSQLND_RESULT_BIND * TSRMLS_DC);
typedef unsigned int            (*func_mysqlnd_stmt__server_status)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_stmt__generate_execute_request)(MYSQLND_STMT * const s, zend_uchar ** request, size_t *request_len, zend_bool * free_buffer TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_stmt__parse_execute_response)(MYSQLND_STMT * const s TSRMLS_DC);
typedef void                            (*func_mysqlnd_stmt__free_stmt_content)(MYSQLND_STMT * const s TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_stmt__flush)(MYSQLND_STMT * const stmt TSRMLS_DC);

struct st_mysqlnd_stmt_methods
{
        func_mysqlnd_stmt__prepare prepare;
        func_mysqlnd_stmt__execute execute;
        func_mysqlnd_stmt__use_result use_result;
        func_mysqlnd_stmt__store_result store_result;
        func_mysqlnd_stmt__get_result get_result;
        func_mysqlnd_stmt__more_results more_results;
        func_mysqlnd_stmt__next_result next_result;
        func_mysqlnd_stmt__free_result free_result;
        func_mysqlnd_stmt__seek_data seek_data;
        func_mysqlnd_stmt__reset reset;
        func_mysqlnd_stmt__net_close net_close;
        func_mysqlnd_stmt__dtor dtor;
        func_mysqlnd_stmt__fetch fetch;

        func_mysqlnd_stmt__bind_parameters bind_parameters;
        func_mysqlnd_stmt__bind_one_parameter bind_one_parameter;
        func_mysqlnd_stmt__refresh_bind_param refresh_bind_param;
        func_mysqlnd_stmt__bind_result bind_result;
        func_mysqlnd_stmt__bind_one_result bind_one_result;
        func_mysqlnd_stmt__send_long_data send_long_data;
        func_mysqlnd_stmt__get_parameter_metadata get_parameter_metadata;
        func_mysqlnd_stmt__get_result_metadata get_result_metadata;

        func_mysqlnd_stmt__get_last_insert_id get_last_insert_id;
        func_mysqlnd_stmt__get_affected_rows get_affected_rows;
        func_mysqlnd_stmt__get_num_rows get_num_rows;

        func_mysqlnd_stmt__get_param_count get_param_count;
        func_mysqlnd_stmt__get_field_count get_field_count;
        func_mysqlnd_stmt__get_warning_count get_warning_count;

        func_mysqlnd_stmt__get_error_no get_error_no;
        func_mysqlnd_stmt__get_error_str get_error_str;
        func_mysqlnd_stmt__get_sqlstate get_sqlstate;

        func_mysqlnd_stmt__get_attribute get_attribute;
        func_mysqlnd_stmt__set_attribute set_attribute;

        func_mysqlnd_stmt__alloc_param_bind alloc_parameter_bind;
        func_mysqlnd_stmt__alloc_result_bind alloc_result_bind;

        func_mysqlnd_stmt__free_parameter_bind free_parameter_bind;
        func_mysqlnd_stmt__free_result_bind free_result_bind;

        func_mysqlnd_stmt__server_status get_server_status;

        func_mysqlnd_stmt__generate_execute_request generate_execute_request;
        func_mysqlnd_stmt__parse_execute_response parse_execute_response;

        func_mysqlnd_stmt__free_stmt_content free_stmt_content;

        func_mysqlnd_stmt__flush flush;
};


struct st_mysqlnd_net_data
{
        php_stream                      *stream;
        zend_bool                       compressed;
        zend_bool                       ssl;
#ifdef MYSQLND_DO_WIRE_CHECK_BEFORE_COMMAND
        zend_uchar                      last_command;
#else
        zend_uchar                      unused_pad1;
#endif
        MYSQLND_NET_OPTIONS     options;

        unsigned int            refcount;

        zend_bool                       persistent;

        struct st_mysqlnd_net_methods m;
};


struct st_mysqlnd_net
{
        struct st_mysqlnd_net_data * data;

        /* sequence for simple checking of correct packets */
        zend_uchar                      packet_no;
        zend_uchar                      compressed_envelope_packet_no;

#ifdef MYSQLND_COMPRESSION_ENABLED
        MYSQLND_READ_BUFFER     * uncompressed_data;
#else
        void *                          unused_pad1;
#endif

        /* cmd buffer */
        MYSQLND_CMD_BUFFER      cmd_buffer;

        zend_bool persistent;
};


struct st_mysqlnd_protocol
{
        zend_bool persistent;
        struct st_mysqlnd_protocol_methods m;
};


struct st_mysqlnd_connection_data
{
/* Operation related */
        MYSQLND_NET             * net;
        MYSQLND_PROTOCOL * protocol;

/* Information related */
        char                    *host;
        unsigned int    host_len;
        char                    *unix_socket;
        unsigned int    unix_socket_len;
        char                    *user;
        unsigned int    user_len;
        char                    *passwd;
        unsigned int    passwd_len;
        char                    *scheme;
        unsigned int    scheme_len;
        uint64_t                thread_id;
        char                    *server_version;
        char                    *host_info;
        zend_uchar              *auth_plugin_data;
        size_t                  auth_plugin_data_len;
        const MYSQLND_CHARSET *charset;
        const MYSQLND_CHARSET *greet_charset;
        char                    *connect_or_select_db;
        unsigned int    connect_or_select_db_len;
        MYSQLND_INFILE  infile;
        unsigned int    protocol_version;
        unsigned long   max_packet_size;
        unsigned int    port;
        unsigned long   client_flag;
        unsigned long   server_capabilities;

        /* For UPSERT queries */
        MYSQLND_UPSERT_STATUS * upsert_status;
        MYSQLND_UPSERT_STATUS upsert_status_impl;
        char                    *last_message;
        unsigned int    last_message_len;

        /* If error packet, we use these */
        MYSQLND_ERROR_INFO      * error_info;
        MYSQLND_ERROR_INFO      error_info_impl;

        /*
          To prevent queries during unbuffered fetches. Also to
          mark the connection as destroyed for garbage collection.
        */
        enum mysqlnd_connection_state   state;
        enum_mysqlnd_query_type                 last_query_type;
        /* Temporary storage between query and (use|store)_result() call */
        MYSQLND_RES                                             *current_result;

        /*
          How many result sets reference this connection.
          It won't be freed until this number reaches 0.
          The last one, please close the door! :-)
          The result set objects can determine by inspecting
          'quit_sent' whether the connection is still valid.
        */
        unsigned int    refcount;

        /* Temporal storage for mysql_query */
        unsigned int    field_count;

        /* persistent connection */
        zend_bool               persistent;

        /* options */
        MYSQLND_OPTIONS * options;
        MYSQLND_OPTIONS options_impl;

        /* stats */
        MYSQLND_STATS   * stats;

        struct st_mysqlnd_conn_data_methods * m;
};


struct st_mysqlnd_connection
{
        MYSQLND_CONN_DATA * data;
        zend_bool persistent;
        struct st_mysqlnd_conn_methods * m;
};


struct mysqlnd_field_hash_key
{
        zend_bool               is_numeric;
        unsigned long   key;
};


struct st_mysqlnd_result_metadata
{
        MYSQLND_FIELD                                   *fields;
        struct mysqlnd_field_hash_key   *zend_hash_keys;
        unsigned int                                    current_field;
        unsigned int                                    field_count;
        /* We need this to make fast allocs in rowp_read */
        unsigned int                                    bit_fields_count;
        size_t                                                  bit_fields_total_len; /* trailing \0 not counted */
        zend_bool                                               persistent;

        struct st_mysqlnd_res_meta_methods *m;
};


struct st_mysqlnd_buffered_result
{
        zval                            **data;
        zval                            **data_cursor;
        MYSQLND_MEMORY_POOL_CHUNK **row_buffers;
        uint64_t                        row_count;
        uint64_t                        initialized_rows;

        unsigned int            references;

        MYSQLND_ERROR_INFO      error_info;
};


struct st_mysqlnd_unbuffered_result
{
        /* For unbuffered (both normal and PS) */
        zval                            **last_row_data;
        MYSQLND_MEMORY_POOL_CHUNK *last_row_buffer;

        uint64_t                        row_count;
        zend_bool                       eof_reached;
};


struct st_mysqlnd_res
{
        MYSQLND_CONN_DATA               *conn;
        enum_mysqlnd_res_type   type;
        unsigned int                    field_count;

        /* For metadata functions */
        MYSQLND_RES_METADATA    *meta;

        /* To be used with store_result() - both normal and PS */
        MYSQLND_RES_BUFFERED            *stored_data;
        MYSQLND_RES_UNBUFFERED          *unbuf;

        /*
          Column lengths of current row - both buffered and unbuffered.
          For buffered results it duplicates the data found in **data
        */
        unsigned long                   *lengths;

        struct st_mysqlnd_packet_row * row_packet;

        MYSQLND_MEMORY_POOL             * result_set_memory_pool;
        zend_bool                               persistent;

        struct st_mysqlnd_res_methods m;
};


struct st_mysqlnd_param_bind
{
        zval            *zv;
        zend_uchar      type;
        enum_param_bind_flags   flags;
};

struct st_mysqlnd_result_bind
{
        zval            *zv;
        zend_bool       bound;
};


struct st_mysqlnd_stmt_data
{
        MYSQLND_CONN_DATA                       *conn;
        unsigned long                           stmt_id;
        unsigned long                           flags;/* cursor is set here */
        enum_mysqlnd_stmt_state         state;
        unsigned int                            warning_count;
        MYSQLND_RES                                     *result;
        unsigned int                            field_count;
        unsigned int                            param_count;
        unsigned char                           send_types_to_server;
        MYSQLND_PARAM_BIND                      *param_bind;
        MYSQLND_RESULT_BIND                     *result_bind;
        zend_bool                                       result_zvals_separated_once;
        zend_bool                                       persistent;

        MYSQLND_UPSERT_STATUS *         upsert_status;
        MYSQLND_UPSERT_STATUS           upsert_status_impl;

        MYSQLND_ERROR_INFO *            error_info;
        MYSQLND_ERROR_INFO                      error_info_impl;

        zend_bool                                       update_max_length;
        unsigned long                           prefetch_rows;

        zend_bool                                       cursor_exists;
        mysqlnd_stmt_use_or_store_func default_rset_handler;

        MYSQLND_CMD_BUFFER                      execute_cmd_buffer;
        unsigned int                            execute_count;/* count how many times the stmt was executed */
};


struct st_mysqlnd_stmt
{
        MYSQLND_STMT_DATA * data;
        struct st_mysqlnd_stmt_methods  *m;
        zend_bool persistent;
};


typedef struct st_mysqlnd_string
{
        char    *s;
        size_t  l;
} MYSQLND_STRING;


struct st_mysqlnd_plugin_header
{
        unsigned int    plugin_api_version; 
        const char *    plugin_name;
        unsigned long   plugin_version;
        const char *    plugin_string_version;
        const char *    plugin_license;
        const char *    plugin_author;
        struct
        {
                MYSQLND_STATS *                 values;
                const MYSQLND_STRING *  names;
        } plugin_stats;

        struct
        {
                enum_func_status (*plugin_shutdown)(void * plugin TSRMLS_DC);
        } m;
};


struct st_mysqlnd_plugin_core
{
        struct st_mysqlnd_plugin_header plugin_header;
};


struct st_mysqlnd_typeii_plugin_example
{
        struct st_mysqlnd_plugin_header plugin_header;
        void * methods;
        unsigned int counter;
};

struct st_mysqlnd_authentication_plugin;

typedef zend_uchar * (*func_auth_plugin__get_auth_data)(struct st_mysqlnd_authentication_plugin * self,
                                                                                                                size_t * auth_data_len,
                                                                                                                MYSQLND_CONN_DATA * conn, const char * const user, const char * const passwd,
                                                                                                                const size_t passwd_len, zend_uchar * auth_plugin_data, size_t auth_plugin_data_len,
                                                                                                                const MYSQLND_OPTIONS * const options, 
                                                                                                                const MYSQLND_NET_OPTIONS * const net_options, unsigned long mysql_flags
                                                                                                                TSRMLS_DC);

struct st_mysqlnd_authentication_plugin
{
        struct st_mysqlnd_plugin_header plugin_header;
        struct {
                func_auth_plugin__get_auth_data get_auth_data;
        } methods;
};


#endif /* MYSQLND_STRUCTS_H */

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