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+/* Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
+
+ 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
+
+/*
+** Common definition between mysql server & client
+*/
+
+#ifndef _mysql_com_h
+#define _mysql_com_h
+#include "binary_log_types.h"
+#include "my_command.h"
+#define HOSTNAME_LENGTH 60
+#define SYSTEM_CHARSET_MBMAXLEN 3
+#define FILENAME_CHARSET_MBMAXLEN 5
+#define NAME_CHAR_LEN 64 /* Field/table name length */
+#define USERNAME_CHAR_LENGTH 32
+#define USERNAME_CHAR_LENGTH_STR "32"
+#ifndef NAME_LEN
+#define NAME_LEN (NAME_CHAR_LEN*SYSTEM_CHARSET_MBMAXLEN)
+#endif
+#define USERNAME_LENGTH (USERNAME_CHAR_LENGTH*SYSTEM_CHARSET_MBMAXLEN)
+#define CONNECT_STRING_MAXLEN 1024
+
+#define MYSQL_AUTODETECT_CHARSET_NAME "auto"
+
+#define SERVER_VERSION_LENGTH 60
+#define SQLSTATE_LENGTH 5
+
+/*
+ Maximum length of comments
+*/
+#define TABLE_COMMENT_INLINE_MAXLEN 180 /* pre 6.0: 60 characters */
+#define TABLE_COMMENT_MAXLEN 2048
+#define COLUMN_COMMENT_MAXLEN 1024
+#define INDEX_COMMENT_MAXLEN 1024
+#define TABLE_PARTITION_COMMENT_MAXLEN 1024
+
+/*
+ Maximum length of protocol packet.
+ OK packet length limit also restricted to this value as any length greater
+ than this value will have first byte of OK packet to be 254 thus does not
+ provide a means to identify if this is OK or EOF packet.
+*/
+#define MAX_PACKET_LENGTH (256L*256L*256L-1)
+
+/*
+ USER_HOST_BUFF_SIZE -- length of string buffer, that is enough to contain
+ username and hostname parts of the user identifier with trailing zero in
+ MySQL standard format:
+ user_name_part@host_name_part\0
+*/
+#define USER_HOST_BUFF_SIZE HOSTNAME_LENGTH + USERNAME_LENGTH + 2
+
+#define LOCAL_HOST "localhost"
+#define LOCAL_HOST_NAMEDPIPE "."
+
+
+#if defined(_WIN32)
+#define MYSQL_NAMEDPIPE "MySQL"
+#define MYSQL_SERVICENAME "MySQL"
+#endif /* _WIN32 */
+
+/* The length of the header part for each generated column in the .frm file. */
+#define FRM_GCOL_HEADER_SIZE 4
+/*
+ Maximum length of the expression statement defined for generated columns.
+*/
+#define GENERATED_COLUMN_EXPRESSION_MAXLEN 65535 - FRM_GCOL_HEADER_SIZE
+/*
+ Length of random string sent by server on handshake; this is also length of
+ obfuscated password, received from client
+*/
+#define SCRAMBLE_LENGTH 20
+#define AUTH_PLUGIN_DATA_PART_1_LENGTH 8
+/* length of password stored in the db: new passwords are preceeded with '*' */
+#define SCRAMBLED_PASSWORD_CHAR_LENGTH (SCRAMBLE_LENGTH*2+1)
+
+
+#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 /* Field is binary */
+
+/* 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 SET_FLAG 2048 /* field is a set */
+#define NO_DEFAULT_VALUE_FLAG 4096 /* Field doesn't have default value */
+#define ON_UPDATE_NOW_FLAG 8192 /* Field is set to NOW on UPDATE */
+#define NUM_FLAG 32768 /* Field is num (for clients) */
+#define PART_KEY_FLAG 16384 /* Intern; Part of some key */
+#define GROUP_FLAG 32768 /* Intern: Group field */
+#define UNIQUE_FLAG 65536 /* Intern: Used by sql_yacc */
+#define BINCMP_FLAG 131072 /* Intern: Used by sql_yacc */
+#define GET_FIXED_FIELDS_FLAG (1 << 18) /* Used to get fields in item tree */
+#define FIELD_IN_PART_FUNC_FLAG (1 << 19)/* Field part of partition func */
+/**
+ Intern: Field in TABLE object for new version of altered table,
+ which participates in a newly added index.
+*/
+#define FIELD_IN_ADD_INDEX (1 << 20)
+#define FIELD_IS_RENAMED (1<< 21) /* Intern: Field is being renamed */
+#define FIELD_FLAGS_STORAGE_MEDIA 22 /* Field storage media, bit 22-23 */
+#define FIELD_FLAGS_STORAGE_MEDIA_MASK (3 << FIELD_FLAGS_STORAGE_MEDIA)
+#define FIELD_FLAGS_COLUMN_FORMAT 24 /* Field column format, bit 24-25 */
+#define FIELD_FLAGS_COLUMN_FORMAT_MASK (3 << FIELD_FLAGS_COLUMN_FORMAT)
+#define FIELD_IS_DROPPED (1<< 26) /* Intern: Field is being dropped */
+#define EXPLICIT_NULL_FLAG (1<< 27) /* Field is explicitly specified as
+ NULL by the user */
+
+#define REFRESH_GRANT 1 /* Refresh grant tables */
+#define REFRESH_LOG 2 /* Start on new log file */
+#define REFRESH_TABLES 4 /* close all tables */
+#define REFRESH_HOSTS 8 /* Flush host cache */
+#define REFRESH_STATUS 16 /* Flush status variables */
+#define REFRESH_THREADS 32 /* Flush thread cache */
+#define REFRESH_SLAVE 64 /* Reset master info and restart slave
+ thread */
+#define REFRESH_MASTER 128 /* Remove all bin logs in the index
+ and truncate the index */
+#define REFRESH_ERROR_LOG 256 /* Rotate only the erorr log */
+#define REFRESH_ENGINE_LOG 512 /* Flush all storage engine logs */
+#define REFRESH_BINARY_LOG 1024 /* Flush the binary log */
+#define REFRESH_RELAY_LOG 2048 /* Flush the relay log */
+#define REFRESH_GENERAL_LOG 4096 /* Flush the general log */
+#define REFRESH_SLOW_LOG 8192 /* Flush the slow query log */
+
+/* The following can't be set with mysql_refresh() */
+#define REFRESH_READ_LOCK 16384 /* Lock tables for read */
+#define REFRESH_FAST 32768 /* Intern flag */
+
+/* RESET (remove all queries) from query cache */
+#define REFRESH_QUERY_CACHE 65536
+#define REFRESH_QUERY_CACHE_FREE 0x20000L /* pack query cache */
+#define REFRESH_DES_KEY_FILE 0x40000L
+#define REFRESH_USER_RESOURCES 0x80000L
+#define REFRESH_FOR_EXPORT 0x100000L /* FLUSH TABLES ... FOR EXPORT */
+#define REFRESH_OPTIMIZER_COSTS 0x200000L /* FLUSH OPTIMIZER_COSTS */
+
+#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 */
+#define CLIENT_NO_SCHEMA 16 /* Don't allow database.table.column */
+#define CLIENT_COMPRESS 32 /* Can use compression protocol */
+#define CLIENT_ODBC 64 /* Odbc client */
+#define CLIENT_LOCAL_FILES 128 /* Can use LOAD DATA LOCAL */
+#define CLIENT_IGNORE_SPACE 256 /* Ignore spaces before '(' */
+#define CLIENT_PROTOCOL_41 512 /* New 4.1 protocol */
+#define CLIENT_INTERACTIVE 1024 /* This is an interactive client */
+#define CLIENT_SSL 2048 /* Switch to SSL after handshake */
+#define CLIENT_IGNORE_SIGPIPE 4096 /* IGNORE sigpipes */
+#define CLIENT_TRANSACTIONS 8192 /* Client knows about transactions */
+#define CLIENT_RESERVED 16384 /* Old flag for 4.1 protocol */
+#define CLIENT_RESERVED2 32768 /* Old flag for 4.1 authentication */
+#define CLIENT_MULTI_STATEMENTS (1UL << 16) /* Enable/disable multi-stmt support */
+#define CLIENT_MULTI_RESULTS (1UL << 17) /* Enable/disable multi-results */
+#define CLIENT_PS_MULTI_RESULTS (1UL << 18) /* Multi-results in PS-protocol */
+
+#define CLIENT_PLUGIN_AUTH (1UL << 19) /* Client supports plugin authentication */
+#define CLIENT_CONNECT_ATTRS (1UL << 20) /* Client supports connection attributes */
+
+/* Enable authentication response packet to be larger than 255 bytes. */
+#define CLIENT_PLUGIN_AUTH_LENENC_CLIENT_DATA (1UL << 21)
+
+/* Don't close the connection for a connection with expired password. */
+#define CLIENT_CAN_HANDLE_EXPIRED_PASSWORDS (1UL << 22)
+
+/**
+ Capable of handling server state change information. Its a hint to the
+ server to include the state change information in Ok packet.
+*/
+#define CLIENT_SESSION_TRACK (1UL << 23)
+/* Client no longer needs EOF packet */
+#define CLIENT_DEPRECATE_EOF (1UL << 24)
+
+#define CLIENT_SSL_VERIFY_SERVER_CERT (1UL << 30)
+#define CLIENT_REMEMBER_OPTIONS (1UL << 31)
+
+#ifdef HAVE_COMPRESS
+#define CAN_CLIENT_COMPRESS CLIENT_COMPRESS
+#else
+#define CAN_CLIENT_COMPRESS 0
+#endif
+
+/* Gather all possible capabilites (flags) supported by the server */
+#define CLIENT_ALL_FLAGS (CLIENT_LONG_PASSWORD \
+ | CLIENT_FOUND_ROWS \
+ | CLIENT_LONG_FLAG \
+ | CLIENT_CONNECT_WITH_DB \
+ | CLIENT_NO_SCHEMA \
+ | CLIENT_COMPRESS \
+ | CLIENT_ODBC \
+ | CLIENT_LOCAL_FILES \
+ | CLIENT_IGNORE_SPACE \
+ | CLIENT_PROTOCOL_41 \
+ | CLIENT_INTERACTIVE \
+ | CLIENT_SSL \
+ | CLIENT_IGNORE_SIGPIPE \
+ | CLIENT_TRANSACTIONS \
+ | CLIENT_RESERVED \
+ | CLIENT_RESERVED2 \
+ | CLIENT_MULTI_STATEMENTS \
+ | CLIENT_MULTI_RESULTS \
+ | CLIENT_PS_MULTI_RESULTS \
+ | CLIENT_SSL_VERIFY_SERVER_CERT \
+ | CLIENT_REMEMBER_OPTIONS \
+ | CLIENT_PLUGIN_AUTH \
+ | CLIENT_CONNECT_ATTRS \
+ | CLIENT_PLUGIN_AUTH_LENENC_CLIENT_DATA \
+ | CLIENT_CAN_HANDLE_EXPIRED_PASSWORDS \
+ | CLIENT_SESSION_TRACK \
+ | CLIENT_DEPRECATE_EOF \
+)
+
+/*
+ Switch off the flags that are optional and depending on build flags
+ If any of the optional flags is supported by the build it will be switched
+ on before sending to the client during the connection handshake.
+*/
+#define CLIENT_BASIC_FLAGS (((CLIENT_ALL_FLAGS & ~CLIENT_SSL) \
+ & ~CLIENT_COMPRESS) \
+ & ~CLIENT_SSL_VERIFY_SERVER_CERT)
+
+/**
+ Is raised when a multi-statement transaction
+ has been started, either explicitly, by means
+ of BEGIN or COMMIT AND CHAIN, or
+ implicitly, by the first transactional
+ statement, when autocommit=off.
+*/
+#define SERVER_STATUS_IN_TRANS 1
+#define SERVER_STATUS_AUTOCOMMIT 2 /* Server in auto_commit mode */
+#define SERVER_MORE_RESULTS_EXISTS 8 /* Multi query - next query exists */
+#define SERVER_QUERY_NO_GOOD_INDEX_USED 16
+#define SERVER_QUERY_NO_INDEX_USED 32
+/**
+ The server was able to fulfill the clients request and opened a
+ read-only non-scrollable cursor for a query. This flag comes
+ in reply to COM_STMT_EXECUTE and COM_STMT_FETCH commands.
+*/
+#define SERVER_STATUS_CURSOR_EXISTS 64
+/**
+ This flag is sent when a read-only cursor is exhausted, in reply to
+ COM_STMT_FETCH command.
+*/
+#define SERVER_STATUS_LAST_ROW_SENT 128
+#define SERVER_STATUS_DB_DROPPED 256 /* A database was dropped */
+#define SERVER_STATUS_NO_BACKSLASH_ESCAPES 512
+/**
+ Sent to the client if after a prepared statement reprepare
+ we discovered that the new statement returns a different
+ number of result set columns.
+*/
+#define SERVER_STATUS_METADATA_CHANGED 1024
+#define SERVER_QUERY_WAS_SLOW 2048
+
+/**
+ To mark ResultSet containing output parameter values.
+*/
+#define SERVER_PS_OUT_PARAMS 4096
+
+/**
+ Set at the same time as SERVER_STATUS_IN_TRANS if the started
+ multi-statement transaction is a read-only transaction. Cleared
+ when the transaction commits or aborts. Since this flag is sent
+ to clients in OK and EOF packets, the flag indicates the
+ transaction status at the end of command execution.
+*/
+#define SERVER_STATUS_IN_TRANS_READONLY 8192
+
+/**
+ This status flag, when on, implies that one of the state information has
+ changed on the server because of the execution of the last statement.
+*/
+#define SERVER_SESSION_STATE_CHANGED (1UL << 14)
+
+/**
+ Server status flags that must be cleared when starting
+ execution of a new SQL statement.
+ Flags from this set are only added to the
+ current server status by the execution engine, but
+ never removed -- the execution engine expects them
+ to disappear automagically by the next command.
+*/
+#define SERVER_STATUS_CLEAR_SET (SERVER_QUERY_NO_GOOD_INDEX_USED| \
+ SERVER_QUERY_NO_INDEX_USED|\
+ SERVER_MORE_RESULTS_EXISTS|\
+ SERVER_STATUS_METADATA_CHANGED |\
+ SERVER_QUERY_WAS_SLOW |\
+ SERVER_STATUS_DB_DROPPED |\
+ SERVER_STATUS_CURSOR_EXISTS|\
+ SERVER_STATUS_LAST_ROW_SENT|\
+ SERVER_SESSION_STATE_CHANGED)
+
+#define MYSQL_ERRMSG_SIZE 512
+#define NET_READ_TIMEOUT 30 /* Timeout on read */
+#define NET_WRITE_TIMEOUT 60 /* Timeout on write */
+#define NET_WAIT_TIMEOUT 8*60*60 /* Wait for new query */
+
+#define ONLY_KILL_QUERY 1
+
+
+struct st_vio; /* Only C */
+typedef struct st_vio Vio;
+
+#define MAX_TINYINT_WIDTH 3 /* Max width for a TINY w.o. sign */
+#define MAX_SMALLINT_WIDTH 5 /* Max width for a SHORT w.o. sign */
+#define MAX_MEDIUMINT_WIDTH 8 /* Max width for a INT24 w.o. sign */
+#define MAX_INT_WIDTH 10 /* Max width for a LONG w.o. sign */
+#define MAX_BIGINT_WIDTH 20 /* Max width for a LONGLONG */
+#define MAX_CHAR_WIDTH 255 /* Max length for a CHAR colum */
+#define MAX_BLOB_WIDTH 16777216 /* Default width for blob */
+
+typedef struct st_net {
+ Vio *vio;
+ unsigned char *buff,*buff_end,*write_pos,*read_pos;
+ my_socket fd; /* For Perl DBI/dbd */
+ /*
+ The following variable is set if we are doing several queries in one
+ command ( as in LOAD TABLE ... FROM MASTER ),
+ and do not want to confuse the client with OK at the wrong time
+ */
+ unsigned long remain_in_buf,length, buf_length, where_b;
+ unsigned long max_packet,max_packet_size;
+ unsigned int pkt_nr,compress_pkt_nr;
+ unsigned int write_timeout, read_timeout, retry_count;
+ int fcntl;
+ unsigned int *return_status;
+ unsigned char reading_or_writing;
+ char save_char;
+ my_bool unused1; /* Please remove with the next incompatible ABI change */
+ my_bool unused2; /* Please remove with the next incompatible ABI change */
+ my_bool compress;
+ my_bool unused3; /* Please remove with the next incompatible ABI change. */
+ /*
+ Pointer to query object in query cache, do not equal NULL (0) for
+ queries in cache that have not stored its results yet
+ */
+ /*
+ Unused, please remove with the next incompatible ABI change.
+ */
+ unsigned char *unused;
+ unsigned int last_errno;
+ unsigned char error;
+ my_bool unused4; /* Please remove with the next incompatible ABI change. */
+ my_bool unused5; /* Please remove with the next incompatible ABI change. */
+ /** Client library error message buffer. Actually belongs to struct MYSQL. */
+ char last_error[MYSQL_ERRMSG_SIZE];
+ /** Client library sqlstate buffer. Set along with the error message. */
+ char sqlstate[SQLSTATE_LENGTH+1];
+ /**
+ Extension pointer, for the caller private use.
+ Any program linking with the networking library can use this pointer,
+ which is handy when private connection specific data needs to be
+ maintained.
+ The mysqld server process uses this pointer internally,
+ to maintain the server internal instrumentation for the connection.
+ */
+ void *extension;
+} NET;
+
+
+#define packet_error (~(unsigned long) 0)
+/* For backward compatibility */
+#define CLIENT_MULTI_QUERIES CLIENT_MULTI_STATEMENTS
+#define FIELD_TYPE_DECIMAL MYSQL_TYPE_DECIMAL
+#define FIELD_TYPE_NEWDECIMAL MYSQL_TYPE_NEWDECIMAL
+#define FIELD_TYPE_TINY MYSQL_TYPE_TINY
+#define FIELD_TYPE_SHORT MYSQL_TYPE_SHORT
+#define FIELD_TYPE_LONG MYSQL_TYPE_LONG
+#define FIELD_TYPE_FLOAT MYSQL_TYPE_FLOAT
+#define FIELD_TYPE_DOUBLE MYSQL_TYPE_DOUBLE
+#define FIELD_TYPE_NULL MYSQL_TYPE_NULL
+#define FIELD_TYPE_TIMESTAMP MYSQL_TYPE_TIMESTAMP
+#define FIELD_TYPE_LONGLONG MYSQL_TYPE_LONGLONG
+#define FIELD_TYPE_INT24 MYSQL_TYPE_INT24
+#define FIELD_TYPE_DATE MYSQL_TYPE_DATE
+#define FIELD_TYPE_TIME MYSQL_TYPE_TIME
+#define FIELD_TYPE_DATETIME MYSQL_TYPE_DATETIME
+#define FIELD_TYPE_YEAR MYSQL_TYPE_YEAR
+#define FIELD_TYPE_NEWDATE MYSQL_TYPE_NEWDATE
+#define FIELD_TYPE_ENUM MYSQL_TYPE_ENUM
+#define FIELD_TYPE_SET MYSQL_TYPE_SET
+#define FIELD_TYPE_TINY_BLOB MYSQL_TYPE_TINY_BLOB
+#define FIELD_TYPE_MEDIUM_BLOB MYSQL_TYPE_MEDIUM_BLOB
+#define FIELD_TYPE_LONG_BLOB MYSQL_TYPE_LONG_BLOB
+#define FIELD_TYPE_BLOB MYSQL_TYPE_BLOB
+#define FIELD_TYPE_VAR_STRING MYSQL_TYPE_VAR_STRING
+#define FIELD_TYPE_STRING MYSQL_TYPE_STRING
+#define FIELD_TYPE_CHAR MYSQL_TYPE_TINY
+#define FIELD_TYPE_INTERVAL MYSQL_TYPE_ENUM
+#define FIELD_TYPE_GEOMETRY MYSQL_TYPE_GEOMETRY
+#define FIELD_TYPE_BIT MYSQL_TYPE_BIT
+
+
+/* Shutdown/kill enums and constants */
+
+/* Bits for THD::killable. */
+#define MYSQL_SHUTDOWN_KILLABLE_CONNECT (unsigned char)(1 << 0)
+#define MYSQL_SHUTDOWN_KILLABLE_TRANS (unsigned char)(1 << 1)
+#define MYSQL_SHUTDOWN_KILLABLE_LOCK_TABLE (unsigned char)(1 << 2)
+#define MYSQL_SHUTDOWN_KILLABLE_UPDATE (unsigned char)(1 << 3)
+
+enum mysql_enum_shutdown_level {
+ /*
+ We want levels to be in growing order of hardness (because we use number
+ comparisons). Note that DEFAULT does not respect the growing property, but
+ it's ok.
+ */
+ SHUTDOWN_DEFAULT = 0,
+ /* wait for existing connections to finish */
+ SHUTDOWN_WAIT_CONNECTIONS= MYSQL_SHUTDOWN_KILLABLE_CONNECT,
+ /* wait for existing trans to finish */
+ SHUTDOWN_WAIT_TRANSACTIONS= MYSQL_SHUTDOWN_KILLABLE_TRANS,
+ /* wait for existing updates to finish (=> no partial MyISAM update) */
+ SHUTDOWN_WAIT_UPDATES= MYSQL_SHUTDOWN_KILLABLE_UPDATE,
+ /* flush InnoDB buffers and other storage engines' buffers*/
+ SHUTDOWN_WAIT_ALL_BUFFERS= (MYSQL_SHUTDOWN_KILLABLE_UPDATE << 1),
+ /* don't flush InnoDB buffers, flush other storage engines' buffers*/
+ SHUTDOWN_WAIT_CRITICAL_BUFFERS= (MYSQL_SHUTDOWN_KILLABLE_UPDATE << 1) + 1,
+ /* Now the 2 levels of the KILL command */
+ KILL_QUERY= 254,
+ KILL_CONNECTION= 255
+};
+
+
+enum enum_cursor_type
+{
+ CURSOR_TYPE_NO_CURSOR= 0,
+ CURSOR_TYPE_READ_ONLY= 1,
+ CURSOR_TYPE_FOR_UPDATE= 2,
+ CURSOR_TYPE_SCROLLABLE= 4
+};
+
+
+/* options for mysql_set_option */
+enum enum_mysql_set_option
+{
+ MYSQL_OPTION_MULTI_STATEMENTS_ON,
+ MYSQL_OPTION_MULTI_STATEMENTS_OFF
+};
+
+/*
+ Type of state change information that the server can include in the Ok
+ packet.
+ Note : 1) session_state_type shouldn't go past 255 (i.e. 1-byte boundary).
+ 2) Modify the definition of SESSION_TRACK_END when a new member is
+ added.
+*/
+enum enum_session_state_type
+{
+ SESSION_TRACK_SYSTEM_VARIABLES, /* Session system variables */
+ SESSION_TRACK_SCHEMA, /* Current schema */
+ SESSION_TRACK_STATE_CHANGE, /* track session state changes */
+ SESSION_TRACK_GTIDS,
+ SESSION_TRACK_TRANSACTION_CHARACTERISTICS, /* Transaction chistics */
+ SESSION_TRACK_TRANSACTION_STATE /* Transaction state */
+};
+
+#define SESSION_TRACK_BEGIN SESSION_TRACK_SYSTEM_VARIABLES
+
+#define SESSION_TRACK_END SESSION_TRACK_TRANSACTION_STATE
+
+#define IS_SESSION_STATE_TYPE(T) \
+ (((int)(T) >= SESSION_TRACK_BEGIN) && ((T) <= SESSION_TRACK_END))
+
+#define net_new_transaction(net) ((net)->pkt_nr=0)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+my_bool my_net_init(NET *net, Vio* vio);
+void my_net_local_init(NET *net);
+void net_end(NET *net);
+void net_clear(NET *net, my_bool check_buffer);
+void net_claim_memory_ownership(NET *net);
+my_bool net_realloc(NET *net, size_t length);
+my_bool net_flush(NET *net);
+my_bool my_net_write(NET *net,const unsigned char *packet, size_t len);
+my_bool net_write_command(NET *net,unsigned char command,
+ const unsigned char *header, size_t head_len,
+ const unsigned char *packet, size_t len);
+my_bool net_write_packet(NET *net, const unsigned char *packet, size_t length);
+unsigned long my_net_read(NET *net);
+
+#ifdef MY_GLOBAL_INCLUDED
+void my_net_set_write_timeout(NET *net, uint timeout);
+void my_net_set_read_timeout(NET *net, uint timeout);
+#endif
+
+struct rand_struct {
+ unsigned long seed1,seed2,max_value;
+ double max_value_dbl;
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+ /* The following is for user defined functions */
+
+enum Item_result {STRING_RESULT=0, REAL_RESULT, INT_RESULT, ROW_RESULT,
+ DECIMAL_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 */
+ char *maybe_null; /* Set to 1 for all maybe_null args */
+ char **attributes; /* Pointer to attribute name */
+ unsigned long *attribute_lengths; /* Length of attribute arguments */
+ void *extension;
+} 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 long max_length; /* For string functions */
+ char *ptr; /* free pointer for function data */
+ my_bool const_item; /* 1 if function always returns the same value */
+ void *extension;
+} UDF_INIT;
+/*
+ TODO: add a notion for determinism of the UDF.
+ See Item_udf_func::update_used_tables ()
+*/
+
+ /* Constants when using compression */
+#define NET_HEADER_SIZE 4 /* standard header size */
+#define COMP_HEADER_SIZE 3 /* compression header extra size */
+
+ /* Prototypes to password functions */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ These functions are used for authentication by client and server and
+ implemented in sql/password.c
+*/
+
+void randominit(struct rand_struct *, unsigned long seed1,
+ unsigned long seed2);
+double my_rnd(struct rand_struct *);
+void create_random_string(char *to, unsigned int length, struct rand_struct *rand_st);
+
+void hash_password(unsigned long *to, const char *password, unsigned int password_len);
+void make_scrambled_password_323(char *to, const char *password);
+void scramble_323(char *to, const char *message, const char *password);
+my_bool check_scramble_323(const unsigned char *reply, const char *message,
+ unsigned long *salt);
+void get_salt_from_password_323(unsigned long *res, const char *password);
+void make_password_from_salt_323(char *to, const unsigned long *salt);
+
+void make_scrambled_password(char *to, const char *password);
+void scramble(char *to, const char *message, const char *password);
+my_bool check_scramble(const unsigned char *reply, const char *message,
+ const unsigned char *hash_stage2);
+void get_salt_from_password(unsigned char *res, const char *password);
+void make_password_from_salt(char *to, const unsigned char *hash_stage2);
+char *octet2hex(char *to, const char *str, unsigned int len);
+
+/* end of password.c */
+
+char *get_tty_password(const char *opt_message);
+const char *mysql_errno_to_sqlstate(unsigned int mysql_errno);
+
+/* Some other useful functions */
+
+my_bool my_thread_init(void);
+void my_thread_end(void);
+
+#ifdef MY_GLOBAL_INCLUDED
+ulong STDCALL net_field_length(uchar **packet);
+my_ulonglong net_field_length_ll(uchar **packet);
+uchar *net_store_length(uchar *pkg, ulonglong length);
+unsigned int net_length_size(ulonglong num);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#define NULL_LENGTH ((unsigned long) ~0) /* For net_store_length */
+#define MYSQL_STMT_HEADER 4
+#define MYSQL_LONG_DATA_HEADER 6
+
+#define NOT_FIXED_DEC 31
+#endif