458 lines
17 KiB
C
458 lines
17 KiB
C
/* Copyright (C) 2000 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/*
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** Common definition between mysql server & client
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*/
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#ifndef _mysql_com_h
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#define _mysql_com_h
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#define NAME_LEN 64 /* Field/table name length */
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#define HOSTNAME_LENGTH 60
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#define USERNAME_LENGTH 16
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#define SERVER_VERSION_LENGTH 60
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#define SQLSTATE_LENGTH 5
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/*
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USER_HOST_BUFF_SIZE -- length of string buffer, that is enough to contain
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username and hostname parts of the user identifier with trailing zero in
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MySQL standard format:
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user_name_part@host_name_part\0
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*/
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#define USER_HOST_BUFF_SIZE HOSTNAME_LENGTH + USERNAME_LENGTH + 2
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#define LOCAL_HOST "localhost"
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#define LOCAL_HOST_NAMEDPIPE "."
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#if defined(__WIN__) && !defined( _CUSTOMCONFIG_)
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#define MYSQL_NAMEDPIPE "MySQL"
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#define MYSQL_SERVICENAME "MySQL"
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#endif /* __WIN__ */
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/*
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You should add new commands to the end of this list, otherwise old
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servers won't be able to handle them as 'unsupported'.
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*/
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enum enum_server_command
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{
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COM_SLEEP, COM_QUIT, COM_INIT_DB, COM_QUERY, COM_FIELD_LIST,
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COM_CREATE_DB, COM_DROP_DB, COM_REFRESH, COM_SHUTDOWN, COM_STATISTICS,
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COM_PROCESS_INFO, COM_CONNECT, COM_PROCESS_KILL, COM_DEBUG, COM_PING,
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COM_TIME, COM_DELAYED_INSERT, COM_CHANGE_USER, COM_BINLOG_DUMP,
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COM_TABLE_DUMP, COM_CONNECT_OUT, COM_REGISTER_SLAVE,
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COM_STMT_PREPARE, COM_STMT_EXECUTE, COM_STMT_SEND_LONG_DATA, COM_STMT_CLOSE,
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COM_STMT_RESET, COM_SET_OPTION, COM_STMT_FETCH, COM_DAEMON,
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/* don't forget to update const char *command_name[] in sql_parse.cc */
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/* Must be last */
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COM_END
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};
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/*
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Length of random string sent by server on handshake; this is also length of
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obfuscated password, recieved from client
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*/
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#define SCRAMBLE_LENGTH 20
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#define SCRAMBLE_LENGTH_323 8
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/* length of password stored in the db: new passwords are preceeded with '*' */
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#define SCRAMBLED_PASSWORD_CHAR_LENGTH (SCRAMBLE_LENGTH*2+1)
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#define SCRAMBLED_PASSWORD_CHAR_LENGTH_323 (SCRAMBLE_LENGTH_323*2)
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#define NOT_NULL_FLAG 1 /* Field can't be NULL */
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#define PRI_KEY_FLAG 2 /* Field is part of a primary key */
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#define UNIQUE_KEY_FLAG 4 /* Field is part of a unique key */
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#define MULTIPLE_KEY_FLAG 8 /* Field is part of a key */
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#define BLOB_FLAG 16 /* Field is a blob */
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#define UNSIGNED_FLAG 32 /* Field is unsigned */
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#define ZEROFILL_FLAG 64 /* Field is zerofill */
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#define BINARY_FLAG 128 /* Field is binary */
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/* The following are only sent to new clients */
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#define ENUM_FLAG 256 /* field is an enum */
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#define AUTO_INCREMENT_FLAG 512 /* field is a autoincrement field */
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#define TIMESTAMP_FLAG 1024 /* Field is a timestamp */
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#define SET_FLAG 2048 /* field is a set */
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#define NO_DEFAULT_VALUE_FLAG 4096 /* Field doesn't have default value */
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#define NUM_FLAG 32768 /* Field is num (for clients) */
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#define PART_KEY_FLAG 16384 /* Intern; Part of some key */
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#define GROUP_FLAG 32768 /* Intern: Group field */
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#define UNIQUE_FLAG 65536 /* Intern: Used by sql_yacc */
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#define BINCMP_FLAG 131072 /* Intern: Used by sql_yacc */
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#define GET_FIXED_FIELDS_FLAG (1 << 18) /* Used to get fields in item tree */
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#define FIELD_IN_PART_FUNC_FLAG (1 << 19)/* Field part of partition func */
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#define FIELD_IN_ADD_INDEX (1<< 20) /* Intern: Field used in ADD INDEX */
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#define FIELD_IS_RENAMED (1<< 21) /* Intern: Field is being renamed */
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#define REFRESH_GRANT 1 /* Refresh grant tables */
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#define REFRESH_LOG 2 /* Start on new log file */
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#define REFRESH_TABLES 4 /* close all tables */
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#define REFRESH_HOSTS 8 /* Flush host cache */
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#define REFRESH_STATUS 16 /* Flush status variables */
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#define REFRESH_THREADS 32 /* Flush thread cache */
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#define REFRESH_SLAVE 64 /* Reset master info and restart slave
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thread */
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#define REFRESH_MASTER 128 /* Remove all bin logs in the index
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and truncate the index */
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/* The following can't be set with mysql_refresh() */
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#define REFRESH_READ_LOCK 16384 /* Lock tables for read */
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#define REFRESH_FAST 32768 /* Intern flag */
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/* RESET (remove all queries) from query cache */
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#define REFRESH_QUERY_CACHE 65536
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#define REFRESH_QUERY_CACHE_FREE 0x20000L /* pack query cache */
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#define REFRESH_DES_KEY_FILE 0x40000L
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#define REFRESH_USER_RESOURCES 0x80000L
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#define CLIENT_LONG_PASSWORD 1 /* new more secure passwords */
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#define CLIENT_FOUND_ROWS 2 /* Found instead of affected rows */
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#define CLIENT_LONG_FLAG 4 /* Get all column flags */
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#define CLIENT_CONNECT_WITH_DB 8 /* One can specify db on connect */
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#define CLIENT_NO_SCHEMA 16 /* Don't allow database.table.column */
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#define CLIENT_COMPRESS 32 /* Can use compression protocol */
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#define CLIENT_ODBC 64 /* Odbc client */
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#define CLIENT_LOCAL_FILES 128 /* Can use LOAD DATA LOCAL */
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#define CLIENT_IGNORE_SPACE 256 /* Ignore spaces before '(' */
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#define CLIENT_PROTOCOL_41 512 /* New 4.1 protocol */
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#define CLIENT_INTERACTIVE 1024 /* This is an interactive client */
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#define CLIENT_SSL 2048 /* Switch to SSL after handshake */
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#define CLIENT_IGNORE_SIGPIPE 4096 /* IGNORE sigpipes */
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#define CLIENT_TRANSACTIONS 8192 /* Client knows about transactions */
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#define CLIENT_RESERVED 16384 /* Old flag for 4.1 protocol */
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#define CLIENT_SECURE_CONNECTION 32768 /* New 4.1 authentication */
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#define CLIENT_MULTI_STATEMENTS (1UL << 16) /* Enable/disable multi-stmt support */
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#define CLIENT_MULTI_RESULTS (1UL << 17) /* Enable/disable multi-results */
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#define CLIENT_SSL_VERIFY_SERVER_CERT (1UL << 30)
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#define CLIENT_REMEMBER_OPTIONS (1UL << 31)
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#define SERVER_STATUS_IN_TRANS 1 /* Transaction has started */
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#define SERVER_STATUS_AUTOCOMMIT 2 /* Server in auto_commit mode */
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#define SERVER_MORE_RESULTS_EXISTS 8 /* Multi query - next query exists */
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#define SERVER_QUERY_NO_GOOD_INDEX_USED 16
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#define SERVER_QUERY_NO_INDEX_USED 32
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/*
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The server was able to fulfill the clients request and opened a
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read-only non-scrollable cursor for a query. This flag comes
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in reply to COM_STMT_EXECUTE and COM_STMT_FETCH commands.
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*/
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#define SERVER_STATUS_CURSOR_EXISTS 64
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/*
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This flag is sent when a read-only cursor is exhausted, in reply to
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COM_STMT_FETCH command.
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*/
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#define SERVER_STATUS_LAST_ROW_SENT 128
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#define SERVER_STATUS_DB_DROPPED 256 /* A database was dropped */
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#define SERVER_STATUS_NO_BACKSLASH_ESCAPES 512
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#define MYSQL_ERRMSG_SIZE 512
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#define NET_READ_TIMEOUT 30 /* Timeout on read */
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#define NET_WRITE_TIMEOUT 60 /* Timeout on write */
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#define NET_WAIT_TIMEOUT 8*60*60 /* Wait for new query */
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#define ONLY_KILL_QUERY 1
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struct st_vio; /* Only C */
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typedef struct st_vio Vio;
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#define MAX_TINYINT_WIDTH 3 /* Max width for a TINY w.o. sign */
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#define MAX_SMALLINT_WIDTH 5 /* Max width for a SHORT w.o. sign */
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#define MAX_MEDIUMINT_WIDTH 8 /* Max width for a INT24 w.o. sign */
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#define MAX_INT_WIDTH 10 /* Max width for a LONG w.o. sign */
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#define MAX_BIGINT_WIDTH 20 /* Max width for a LONGLONG */
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#define MAX_CHAR_WIDTH 255 /* Max length for a CHAR colum */
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#define MAX_BLOB_WIDTH 16777216 /* Default width for blob */
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typedef struct st_net {
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#if !defined(CHECK_EMBEDDED_DIFFERENCES) || !defined(EMBEDDED_LIBRARY)
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Vio* vio;
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unsigned char *buff,*buff_end,*write_pos,*read_pos;
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my_socket fd; /* For Perl DBI/dbd */
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unsigned long max_packet,max_packet_size;
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unsigned int pkt_nr,compress_pkt_nr;
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unsigned int write_timeout, read_timeout, retry_count;
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int fcntl;
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my_bool compress;
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/*
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The following variable is set if we are doing several queries in one
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command ( as in LOAD TABLE ... FROM MASTER ),
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and do not want to confuse the client with OK at the wrong time
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*/
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unsigned long remain_in_buf,length, buf_length, where_b;
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unsigned int *return_status;
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unsigned char reading_or_writing;
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char save_char;
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my_bool no_send_ok; /* For SPs and other things that do multiple stmts */
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my_bool no_send_eof; /* For SPs' first version read-only cursors */
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/*
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Set if OK packet is already sent, and we do not need to send error
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messages
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*/
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my_bool no_send_error;
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/*
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Pointer to query object in query cache, do not equal NULL (0) for
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queries in cache that have not stored its results yet
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*/
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#endif
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char last_error[MYSQL_ERRMSG_SIZE], sqlstate[SQLSTATE_LENGTH+1];
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unsigned int last_errno;
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unsigned char error;
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/*
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'query_cache_query' should be accessed only via query cache
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functions and methods to maintain proper locking.
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*/
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gptr query_cache_query;
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my_bool report_error; /* We should report error (we have unreported error) */
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my_bool return_errno;
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} NET;
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#define packet_error (~(unsigned long) 0)
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enum enum_field_types { MYSQL_TYPE_DECIMAL, MYSQL_TYPE_TINY,
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MYSQL_TYPE_SHORT, MYSQL_TYPE_LONG,
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MYSQL_TYPE_FLOAT, MYSQL_TYPE_DOUBLE,
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MYSQL_TYPE_NULL, MYSQL_TYPE_TIMESTAMP,
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MYSQL_TYPE_LONGLONG,MYSQL_TYPE_INT24,
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MYSQL_TYPE_DATE, MYSQL_TYPE_TIME,
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MYSQL_TYPE_DATETIME, MYSQL_TYPE_YEAR,
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MYSQL_TYPE_NEWDATE, MYSQL_TYPE_VARCHAR,
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MYSQL_TYPE_BIT,
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MYSQL_TYPE_NEWDECIMAL=246,
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MYSQL_TYPE_ENUM=247,
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MYSQL_TYPE_SET=248,
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MYSQL_TYPE_TINY_BLOB=249,
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MYSQL_TYPE_MEDIUM_BLOB=250,
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MYSQL_TYPE_LONG_BLOB=251,
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MYSQL_TYPE_BLOB=252,
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MYSQL_TYPE_VAR_STRING=253,
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MYSQL_TYPE_STRING=254,
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MYSQL_TYPE_GEOMETRY=255
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};
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/* For backward compatibility */
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#define CLIENT_MULTI_QUERIES CLIENT_MULTI_STATEMENTS
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#define FIELD_TYPE_DECIMAL MYSQL_TYPE_DECIMAL
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#define FIELD_TYPE_NEWDECIMAL MYSQL_TYPE_NEWDECIMAL
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#define FIELD_TYPE_TINY MYSQL_TYPE_TINY
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#define FIELD_TYPE_SHORT MYSQL_TYPE_SHORT
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#define FIELD_TYPE_LONG MYSQL_TYPE_LONG
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#define FIELD_TYPE_FLOAT MYSQL_TYPE_FLOAT
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#define FIELD_TYPE_DOUBLE MYSQL_TYPE_DOUBLE
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#define FIELD_TYPE_NULL MYSQL_TYPE_NULL
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#define FIELD_TYPE_TIMESTAMP MYSQL_TYPE_TIMESTAMP
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#define FIELD_TYPE_LONGLONG MYSQL_TYPE_LONGLONG
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#define FIELD_TYPE_INT24 MYSQL_TYPE_INT24
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#define FIELD_TYPE_DATE MYSQL_TYPE_DATE
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#define FIELD_TYPE_TIME MYSQL_TYPE_TIME
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#define FIELD_TYPE_DATETIME MYSQL_TYPE_DATETIME
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#define FIELD_TYPE_YEAR MYSQL_TYPE_YEAR
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#define FIELD_TYPE_NEWDATE MYSQL_TYPE_NEWDATE
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#define FIELD_TYPE_ENUM MYSQL_TYPE_ENUM
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#define FIELD_TYPE_SET MYSQL_TYPE_SET
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#define FIELD_TYPE_TINY_BLOB MYSQL_TYPE_TINY_BLOB
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#define FIELD_TYPE_MEDIUM_BLOB MYSQL_TYPE_MEDIUM_BLOB
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#define FIELD_TYPE_LONG_BLOB MYSQL_TYPE_LONG_BLOB
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#define FIELD_TYPE_BLOB MYSQL_TYPE_BLOB
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#define FIELD_TYPE_VAR_STRING MYSQL_TYPE_VAR_STRING
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#define FIELD_TYPE_STRING MYSQL_TYPE_STRING
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#define FIELD_TYPE_CHAR MYSQL_TYPE_TINY
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#define FIELD_TYPE_INTERVAL MYSQL_TYPE_ENUM
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#define FIELD_TYPE_GEOMETRY MYSQL_TYPE_GEOMETRY
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#define FIELD_TYPE_BIT MYSQL_TYPE_BIT
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/* Shutdown/kill enums and constants */
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/* Bits for THD::killable. */
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#define MYSQL_SHUTDOWN_KILLABLE_CONNECT (unsigned char)(1 << 0)
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#define MYSQL_SHUTDOWN_KILLABLE_TRANS (unsigned char)(1 << 1)
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#define MYSQL_SHUTDOWN_KILLABLE_LOCK_TABLE (unsigned char)(1 << 2)
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#define MYSQL_SHUTDOWN_KILLABLE_UPDATE (unsigned char)(1 << 3)
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enum mysql_enum_shutdown_level {
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/*
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We want levels to be in growing order of hardness (because we use number
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comparisons). Note that DEFAULT does not respect the growing property, but
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it's ok.
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*/
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SHUTDOWN_DEFAULT = 0,
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/* wait for existing connections to finish */
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SHUTDOWN_WAIT_CONNECTIONS= MYSQL_SHUTDOWN_KILLABLE_CONNECT,
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/* wait for existing trans to finish */
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SHUTDOWN_WAIT_TRANSACTIONS= MYSQL_SHUTDOWN_KILLABLE_TRANS,
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/* wait for existing updates to finish (=> no partial MyISAM update) */
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SHUTDOWN_WAIT_UPDATES= MYSQL_SHUTDOWN_KILLABLE_UPDATE,
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/* flush InnoDB buffers and other storage engines' buffers*/
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SHUTDOWN_WAIT_ALL_BUFFERS= (MYSQL_SHUTDOWN_KILLABLE_UPDATE << 1),
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/* don't flush InnoDB buffers, flush other storage engines' buffers*/
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SHUTDOWN_WAIT_CRITICAL_BUFFERS= (MYSQL_SHUTDOWN_KILLABLE_UPDATE << 1) + 1,
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/* Now the 2 levels of the KILL command */
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#if MYSQL_VERSION_ID >= 50000
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KILL_QUERY= 254,
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#endif
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KILL_CONNECTION= 255
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};
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enum enum_cursor_type
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{
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CURSOR_TYPE_NO_CURSOR= 0,
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CURSOR_TYPE_READ_ONLY= 1,
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CURSOR_TYPE_FOR_UPDATE= 2,
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CURSOR_TYPE_SCROLLABLE= 4
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};
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/* options for mysql_set_option */
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enum enum_mysql_set_option
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{
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MYSQL_OPTION_MULTI_STATEMENTS_ON,
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MYSQL_OPTION_MULTI_STATEMENTS_OFF
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};
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#define net_new_transaction(net) ((net)->pkt_nr=0)
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#ifdef __cplusplus
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extern "C" {
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#endif
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my_bool my_net_init(NET *net, Vio* vio);
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void my_net_local_init(NET *net);
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void net_end(NET *net);
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void net_clear(NET *net, my_bool clear_buffer);
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my_bool net_realloc(NET *net, unsigned long length);
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my_bool net_flush(NET *net);
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my_bool my_net_write(NET *net,const char *packet,unsigned long len);
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my_bool net_write_command(NET *net,unsigned char command,
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const char *header, unsigned long head_len,
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const char *packet, unsigned long len);
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int net_real_write(NET *net,const char *packet,unsigned long len);
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unsigned long my_net_read(NET *net);
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/*
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The following function is not meant for normal usage
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Currently it's used internally by manager.c
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*/
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struct sockaddr;
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int my_connect(my_socket s, const struct sockaddr *name, unsigned int namelen,
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unsigned int timeout);
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struct rand_struct {
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unsigned long seed1,seed2,max_value;
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double max_value_dbl;
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};
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#ifdef __cplusplus
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}
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#endif
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/* The following is for user defined functions */
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enum Item_result {STRING_RESULT=0, REAL_RESULT, INT_RESULT, ROW_RESULT,
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DECIMAL_RESULT};
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typedef struct st_udf_args
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{
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unsigned int arg_count; /* Number of arguments */
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enum Item_result *arg_type; /* Pointer to item_results */
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char **args; /* Pointer to argument */
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unsigned long *lengths; /* Length of string arguments */
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char *maybe_null; /* Set to 1 for all maybe_null args */
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char **attributes; /* Pointer to attribute name */
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unsigned long *attribute_lengths; /* Length of attribute arguments */
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} UDF_ARGS;
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/* This holds information about the result */
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typedef struct st_udf_init
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{
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my_bool maybe_null; /* 1 if function can return NULL */
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unsigned int decimals; /* for real functions */
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unsigned long max_length; /* For string functions */
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char *ptr; /* free pointer for function data */
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my_bool const_item; /* 0 if result is independent of arguments */
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} UDF_INIT;
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/* Constants when using compression */
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#define NET_HEADER_SIZE 4 /* standard header size */
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#define COMP_HEADER_SIZE 3 /* compression header extra size */
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/* Prototypes to password functions */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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These functions are used for authentication by client and server and
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implemented in sql/password.c
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*/
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void randominit(struct rand_struct *, unsigned long seed1,
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unsigned long seed2);
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double my_rnd(struct rand_struct *);
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void create_random_string(char *to, unsigned int length, struct rand_struct *rand_st);
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void hash_password(unsigned long *to, const char *password, unsigned int password_len);
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void make_scrambled_password_323(char *to, const char *password);
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void scramble_323(char *to, const char *message, const char *password);
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my_bool check_scramble_323(const char *, const char *message,
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unsigned long *salt);
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void get_salt_from_password_323(unsigned long *res, const char *password);
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void make_password_from_salt_323(char *to, const unsigned long *salt);
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void make_scrambled_password(char *to, const char *password);
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void scramble(char *to, const char *message, const char *password);
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my_bool check_scramble(const char *reply, const char *message,
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const unsigned char *hash_stage2);
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void get_salt_from_password(unsigned char *res, const char *password);
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void make_password_from_salt(char *to, const unsigned char *hash_stage2);
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char *octet2hex(char *to, const char *str, unsigned int len);
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/* end of password.c */
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char *get_tty_password(const char *opt_message);
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const char *mysql_errno_to_sqlstate(unsigned int mysql_errno);
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/* Some other useful functions */
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my_bool my_thread_init(void);
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void my_thread_end(void);
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#ifdef _global_h
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ulong STDCALL net_field_length(uchar **packet);
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my_ulonglong net_field_length_ll(uchar **packet);
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|
char *net_store_length(char *pkg, ulonglong length);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#define NULL_LENGTH ((unsigned long) ~0) /* For net_store_length */
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#define MYSQL_STMT_HEADER 4
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#define MYSQL_LONG_DATA_HEADER 6
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#endif
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