30bd869f1c
When a MariaDB 10.0 DATETIME field with a custom length was defined, the field offsets weren't calculated properly. As there is no metadata for pre-10.1 DATETIME types with decimal precision, the metadata (i.e. decimal count) needs to be gathered from the CREATE TABLE statement. This information is then used to calculate the correct field length when the value is decoded. This change does not fix the incorrect interpretation of the old DATETIME value. The converted values are still garbled due to the fact that the value needs to be shifted out of the decimal format before it can be properly converted.
96 lines
3.0 KiB
C
96 lines
3.0 KiB
C
#ifndef MYSQL_BINLOG_H
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#define MYSQL_BINLOG_H
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/*
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* Copyright (c) 2016 MariaDB Corporation Ab
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file and at www.mariadb.com/bsl.
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*
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* Change Date: 2019-01-01
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2 or later of the General
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* Public License.
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*/
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/**
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* @file mysql_binlog.h - Extracting information from binary logs
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*/
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#include <stdint.h>
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#include <stdbool.h>
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#include <time.h>
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/** Maximum GTID string length */
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#define GTID_MAX_LEN 64
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/** Table map column types */
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#define TABLE_COL_TYPE_DECIMAL 0x00
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#define TABLE_COL_TYPE_TINY 0x01
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#define TABLE_COL_TYPE_SHORT 0x02
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#define TABLE_COL_TYPE_LONG 0x03
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#define TABLE_COL_TYPE_FLOAT 0x04
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#define TABLE_COL_TYPE_DOUBLE 0x05
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#define TABLE_COL_TYPE_NULL 0x06
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#define TABLE_COL_TYPE_TIMESTAMP 0x07
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#define TABLE_COL_TYPE_LONGLONG 0x08
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#define TABLE_COL_TYPE_INT24 0x09
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#define TABLE_COL_TYPE_DATE 0x0a
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#define TABLE_COL_TYPE_TIME 0x0b
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#define TABLE_COL_TYPE_DATETIME 0x0c
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#define TABLE_COL_TYPE_YEAR 0x0d
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#define TABLE_COL_TYPE_NEWDATE 0x0e
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#define TABLE_COL_TYPE_VARCHAR 0x0f
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#define TABLE_COL_TYPE_BIT 0x10
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#define TABLE_COL_TYPE_TIMESTAMP2 0x11
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#define TABLE_COL_TYPE_DATETIME2 0x12
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#define TABLE_COL_TYPE_TIME2 0x13
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#define TABLE_COL_TYPE_NEWDECIMAL 0xf6
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#define TABLE_COL_TYPE_ENUM 0xf7
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#define TABLE_COL_TYPE_SET 0xf8
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#define TABLE_COL_TYPE_TINY_BLOB 0xf9
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#define TABLE_COL_TYPE_MEDIUM_BLOB 0xfa
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#define TABLE_COL_TYPE_LONG_BLOB 0xfb
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#define TABLE_COL_TYPE_BLOB 0xfc
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#define TABLE_COL_TYPE_VAR_STRING 0xfd
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#define TABLE_COL_TYPE_STRING 0xfe
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#define TABLE_COL_TYPE_GEOMETRY 0xff
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/**
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* RBR row event flags
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*/
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#define ROW_EVENT_END_STATEMENT 0x0001
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#define ROW_EVENT_NO_FKCHECK 0x0002
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#define ROW_EVENT_NO_UKCHECK 0x0004
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#define ROW_EVENT_HAS_COLUMNS 0x0008
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/** The table ID used for end of statement row events */
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#define TABLE_DUMMY_ID 0x00ffffff
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const char* column_type_to_string(uint8_t type);
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/** Column type checking functions */
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bool column_is_variable_string(uint8_t type);
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bool column_is_fixed_string(uint8_t type);
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bool column_is_blob(uint8_t type);
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bool column_is_temporal(uint8_t type);
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bool column_is_bit(uint8_t type);
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bool column_is_decimal(uint8_t type);
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/** Various types are stored as fixed string types and the real type is stored
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* in the table metadata */
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bool fixed_string_is_enum(uint8_t type);
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/** Value unpacking */
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size_t unpack_temporal_value(uint8_t type, uint8_t *ptr, uint8_t* metadata, int length, struct tm *tm);
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size_t unpack_enum(uint8_t *ptr, uint8_t *metadata, uint8_t *dest);
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size_t unpack_numeric_field(uint8_t *ptr, uint8_t type, uint8_t* metadata, uint8_t* val);
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size_t unpack_bit(uint8_t *ptr, uint8_t *null_mask, uint32_t col_count,
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uint32_t curr_col_index, uint8_t *metadata, uint64_t *dest);
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size_t unpack_decimal_field(uint8_t *ptr, uint8_t *metadata, double *val_float);
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void format_temporal_value(char *str, size_t size, uint8_t type, struct tm *tm);
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#endif /* MYSQL_BINLOG_H */
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