mysql_com.h
上传用户:jmzj888
上传日期:2007-01-02
资源大小:220k
文件大小:5k
- /* Copyright Abandoned 1996 TCX DataKonsult AB & Monty Program KB & Detron HB
- This file is public domain and comes with NO WARRANTY of any kind */
- /*
- ** Common definition between mysql server & client
- */
- #ifndef _mysql_com_h
- #define _mysql_com_h
- #ifdef __cplusplus
- extern "C" {
- #endif
- #define NAME_LEN 64 /* Field/table name length */
- #define LOCAL_HOST "localhost"
- #define MYSQL_PORT 3306 /* Alloced by ISI for MySQL */
- #define MYSQL_UNIX_ADDR "/tmp/mysql.sock"
- enum enum_server_command {COM_SLEEP,COM_QUIT,COM_INIT_DB,COM_QUERY,
- COM_FIELD_LIST,COM_CREATE_DB,COM_DROP_DB,COM_REFRESH,
- COM_SHUTDOWN,COM_STATISTICS,
- COM_PROCESS_INFO,COM_CONNECT,COM_PROCESS_KILL,
- COM_DEBUG};
- #define NOT_NULL_FLAG 1 /* Field can't be NULL */
- #define PRI_KEY_FLAG 2 /* Field is part of a primary key */
- #define UNIQUE_KEY_FLAG 4 /* Field is part of a unique key */
- #define MULTIPLE_KEY_FLAG 8 /* Field is part of a key */
- #define BLOB_FLAG 16 /* Field is a blob */
- #define UNSIGNED_FLAG 32 /* Field is unsigned */
- #define ZEROFILL_FLAG 64 /* Field is zerofill */
- #define BINARY_FLAG 128
- /* The following are only sent to new clients */
- #define ENUM_FLAG 256 /* field is an enum */
- #define AUTO_INCREMENT_FLAG 512 /* field is a autoincrement field */
- #define TIMESTAMP_FLAG 1024 /* Field is a timestamp */
- #define PART_KEY_FLAG 16384 /* Intern; Part of some key */
- #define GROUP_FLAG 32768 /* Intern group field */
- #define REFRESH_GRANT 1 /* Refresh grant tables */
- #define REFRESH_LOG 2 /* Start on new log file */
- #define REFRESH_TABLES 4 /* close all tables */
- #define CLIENT_LONG_PASSWORD 1 /* new more secure passwords */
- #define CLIENT_FOUND_ROWS 2 /* Found instead of affected rows */
- #define CLIENT_LONG_FLAG 4 /* Get all column flags */
- #define CLIENT_CONNECT_WITH_DB 8 /* One can specify db on connect */
- typedef struct st_used_mem { /* struct for once_alloc */
- struct st_used_mem *next; /* Next block in use */
- unsigned int left; /* memory left in block */
- unsigned int size; /* size of block */
- } USED_MEM;
- typedef struct st_mem_root {
- USED_MEM *free;
- USED_MEM *used;
- unsigned int min_malloc;
- unsigned int block_size;
- void (*error_handler)(void);
- } MEM_ROOT;
- #define MYSQL_ERRMSG_SIZE 200
- typedef struct st_net {
- Socket fd;
- int fcntl;
- unsigned char *buff,*buff_end,*write_pos;
- char last_error[MYSQL_ERRMSG_SIZE];
- unsigned int last_errno,max_packet,timeout,pkt_nr;
- my_bool error,return_errno;
- } NET;
- #define packet_error ((unsigned int) -1)
- enum enum_field_types { FIELD_TYPE_DECIMAL, FIELD_TYPE_TINY,
- FIELD_TYPE_SHORT, FIELD_TYPE_LONG,
- FIELD_TYPE_FLOAT, FIELD_TYPE_DOUBLE,
- FIELD_TYPE_NULL, FIELD_TYPE_TIMESTAMP,
- FIELD_TYPE_LONGLONG,FIELD_TYPE_INT24,
- FIELD_TYPE_DATE, FIELD_TYPE_TIME,
- FIELD_TYPE_DATETIME,
- FIELD_TYPE_ENUM=247,
- FIELD_TYPE_SET=248,
- FIELD_TYPE_TINY_BLOB=249,
- FIELD_TYPE_MEDIUM_BLOB=250,
- FIELD_TYPE_LONG_BLOB=251,
- FIELD_TYPE_BLOB=252,
- FIELD_TYPE_VAR_STRING=253,
- FIELD_TYPE_STRING=254
- };
- #define FIELD_TYPE_CHAR FIELD_TYPE_TINY /* For compability */
- #define FIELD_TYPE_INTERVAL FIELD_TYPE_ENUM /* For compability */
- void sql_free(MEM_ROOT *root);
- void init_alloc_root(MEM_ROOT *root,unsigned int block_size);
- my_bool sql_alloc_first_block(MEM_ROOT *root);
- gptr sql_alloc_root(MEM_ROOT *mem_root,unsigned int len);
- char *sql_strdup_root(MEM_ROOT *root,const char *str);
- char *sql_memdup_root(MEM_ROOT *root,const char *str,unsigned int len);
- extern unsigned long max_allowed_packet;
- extern unsigned long net_buffer_length;
- #define net_new_transaction(net) ((net)->pkt_nr=0)
- int my_net_init(NET *net,Socket fd);
- void net_end(NET *net);
- void net_clear(NET *net);
- int net_flush(NET *net);
- int my_net_write(NET *net,const byte *packet,unsigned int len);
- int net_write_command(NET *net,unsigned char command,const byte *packet,
- unsigned int len);
- int net_real_write(NET *net,const byte *packet,unsigned int len);
- unsigned int my_net_read(NET *net);
- struct rand_struct {
- unsigned long seed,seed2,max_value;
- double max_value_dbl;
- };
- /* The following is for user defined functions */
- enum Item_result {STRING_RESULT,REAL_RESULT,INT_RESULT};
- typedef struct st_udf_args
- {
- unsigned int arg_count; /* Number of arguments */
- enum Item_result *arg_type; /* Pointer to item_results */
- char **args; /* Pointer to argument */
- unsigned long *lengths; /* Length of string arguments */
- } UDF_ARGS;
- /* This holds information about the result */
- typedef struct st_udf_init
- {
- my_bool maybe_null; /* 1 if function can return NULL */
- unsigned int decimals; /* for real functions */
- unsigned int max_length; /* For string functions */
- char *ptr; /* free pointer for function data */
- } UDF_INIT;
- /* Prototypes to password functions */
- void randominit(struct rand_struct *rand,unsigned long seed1,
- unsigned long seed2);
- double rnd(struct rand_struct *rand);
- void make_scrambled_password(char *to,const char *password);
- void get_salt_from_password(unsigned long *res,const char *password);
- char *scramble(char *to,const char *message,const char *password,
- my_bool old_ver);
- my_bool check_scramble(const char *scramble,const char *message,
- unsigned long *salt,my_bool old_ver);
- char *get_tty_password(char *opt_message);
- #define NULL_LENGTH ((unsigned long) ~0) /* For net_store_length */
- #ifdef __WIN32__
- #define socket_errno WSAGetLastError()
- #else
- #define socket_errno errno
- #endif
- #ifdef __cplusplus
- }
- #endif
- #endif