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Diffstat (limited to 'mysql/mysql_com.h')
| -rw-r--r-- | mysql/mysql_com.h | 614 |
1 files changed, 614 insertions, 0 deletions
diff --git a/mysql/mysql_com.h b/mysql/mysql_com.h new file mode 100644 index 0000000..d864d07 --- /dev/null +++ b/mysql/mysql_com.h @@ -0,0 +1,614 @@ +/* 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 |