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112 lines
3.3 KiB
C
112 lines
3.3 KiB
C
/* Copyright (c) 2007 MySQL AB, 2008 Sun Microsystems, Inc.
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Use is subject to license terms.
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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; version 2 of the License.
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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
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#ifndef RPL_CONSTANTS_H
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#define RPL_CONSTANTS_H
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#include <my_sys.h>
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#include <my_crypt.h>
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/**
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Enumeration of the incidents that can occur for the server.
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*/
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enum Incident {
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/** No incident */
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INCIDENT_NONE = 0,
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/** There are possibly lost events in the replication stream */
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INCIDENT_LOST_EVENTS = 1,
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/** Shall be last event of the enumeration */
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INCIDENT_COUNT
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};
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/**
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Enumeration of the reserved formats of Binlog extra row information
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*/
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enum ExtraRowInfoFormat {
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/** Reserved formats 0 -> 63 inclusive */
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ERIF_LASTRESERVED = 63,
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/**
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Available / uncontrolled formats
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64 -> 254 inclusive
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*/
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ERIF_OPEN1 = 64,
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ERIF_OPEN2 = 65,
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ERIF_LASTOPEN = 254,
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/**
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Multi-payload format 255
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Length is total length, payload is sequence of
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sub-payloads with their own headers containing
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length + format.
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*/
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ERIF_MULTI = 255
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};
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/*
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1 byte length, 1 byte format
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Length is total length in bytes, including 2 byte header
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Length values 0 and 1 are currently invalid and reserved.
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*/
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#define EXTRA_ROW_INFO_LEN_OFFSET 0
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#define EXTRA_ROW_INFO_FORMAT_OFFSET 1
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#define EXTRA_ROW_INFO_HDR_BYTES 2
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#define EXTRA_ROW_INFO_MAX_PAYLOAD (255 - EXTRA_ROW_INFO_HDR_BYTES)
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enum enum_binlog_checksum_alg {
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BINLOG_CHECKSUM_ALG_OFF= 0, // Events are without checksum though its generator
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// is checksum-capable New Master (NM).
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BINLOG_CHECKSUM_ALG_CRC32= 1, // CRC32 of zlib algorithm.
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BINLOG_CHECKSUM_ALG_ENUM_END, // the cut line: valid alg range is [1, 0x7f].
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BINLOG_CHECKSUM_ALG_UNDEF= 255 // special value to tag undetermined yet checksum
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// or events from checksum-unaware servers
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};
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#define BINLOG_CRYPTO_SCHEME_LENGTH 1
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#define BINLOG_KEY_VERSION_LENGTH 4
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#define BINLOG_IV_LENGTH MY_AES_BLOCK_SIZE
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#define BINLOG_IV_OFFS_LENGTH 4
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#define BINLOG_NONCE_LENGTH (BINLOG_IV_LENGTH - BINLOG_IV_OFFS_LENGTH)
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struct Binlog_crypt_data {
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uint scheme;
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uint key_version, key_length, ctx_size;
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uchar key[MY_AES_MAX_KEY_LENGTH];
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uchar nonce[BINLOG_NONCE_LENGTH];
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int init(uint sch, uint kv)
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{
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scheme= sch;
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ctx_size= encryption_ctx_size(ENCRYPTION_KEY_SYSTEM_DATA, kv);
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key_version= kv;
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key_length= sizeof(key);
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return encryption_key_get(ENCRYPTION_KEY_SYSTEM_DATA, kv, key, &key_length);
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}
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void set_iv(uchar* iv, uint32 offs) const
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{
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memcpy(iv, nonce, BINLOG_NONCE_LENGTH);
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int4store(iv + BINLOG_NONCE_LENGTH, offs);
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}
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};
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#endif /* RPL_CONSTANTS_H */
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