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