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   1 /*
   2  * Copyright (c) <2008>, Sun Microsystems, Inc.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are met:
   7  *     * Redistributions of source code must retain the above copyright
   8  *       notice, this list of conditions and the following disclaimer.
   9  *     * Redistributions in binary form must reproduce the above copyright
  10  *       notice, this list of conditions and the following disclaimer in the
  11  *       documentation and/or other materials provided with the distribution.
  12  *     * Neither the name of the  nor the
  13  *       names of its contributors may be used to endorse or promote products
  14  *       derived from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY SUN MICROSYSTEMS, INC. ``AS IS'' AND ANY
  17  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  18  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  19  * DISCLAIMED. IN NO EVENT SHALL SUN MICROSYSTEMS, INC. BE LIABLE FOR ANY
  20  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  21  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  23  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27 /*
  28  * Summary: Constants used by to implement the binary protocol.
  29  *
  30  * Copy: See Copyright for the status of this software.
  31  *
  32  * Author: Trond Norbye <trond.norbye@sun.com>
  33  */
  34
  35 #ifndef PROTOCOL_BINARY_H
  36 #define PROTOCOL_BINARY_H
  37
  38 #include <stdint.h>
  39
  40 /**
  41  * This file contains definitions of the constants and packet formats
  42  * defined in the binary specification. Please note that you _MUST_ remember
  43  * to convert each multibyte field to / from network byte order to / from
  44  * host order.
  45  */
  46 #ifdef __cplusplus
  47 extern "C"
  48 {
  49 #endif
  50
  51   /**
  52    * Definition of the legal "magic" values used in a packet.
  53    * See section 3.1 Magic byte
  54    */
  55   typedef enum {
  56     PROTOCOL_BINARY_REQ = 0x80,
  57     PROTOCOL_BINARY_RES = 0x81
  58   } protocol_binary_magic;
  59
  60   /**
  61    * Definition of the valid response status numbers.
  62    * See section 3.2 Response Status
  63    */
  64   typedef enum {
  65     PROTOCOL_BINARY_RESPONSE_SUCCESS = 0x00,
  66     PROTOCOL_BINARY_RESPONSE_KEY_ENOENT = 0x01,
  67     PROTOCOL_BINARY_RESPONSE_KEY_EEXISTS = 0x02,
  68     PROTOCOL_BINARY_RESPONSE_E2BIG = 0x03,
  69     PROTOCOL_BINARY_RESPONSE_EINVAL = 0x04,
  70     PROTOCOL_BINARY_RESPONSE_NOT_STORED = 0x05,
  71     PROTOCOL_BINARY_RESPONSE_UNKNOWN_COMMAND = 0x81,
  72     PROTOCOL_BINARY_RESPONSE_ENOMEM = 0x82
  73   } protocol_binary_response_status;
  74
  75   /**
  76    * Defintion of the different command opcodes.
  77    * See section 3.3 Command Opcodes
  78    */
  79   typedef enum {
  80     PROTOCOL_BINARY_CMD_GET = 0x00,
  81     PROTOCOL_BINARY_CMD_SET = 0x01,
  82     PROTOCOL_BINARY_CMD_ADD = 0x02,
  83     PROTOCOL_BINARY_CMD_REPLACE = 0x03,
  84     PROTOCOL_BINARY_CMD_DELETE = 0x04,
  85     PROTOCOL_BINARY_CMD_INCREMENT = 0x05,
  86     PROTOCOL_BINARY_CMD_DECREMENT = 0x06,
  87     PROTOCOL_BINARY_CMD_QUIT = 0x07,
  88     PROTOCOL_BINARY_CMD_FLUSH = 0x08,
  89     PROTOCOL_BINARY_CMD_GETQ = 0x09,
  90     PROTOCOL_BINARY_CMD_NOOP = 0x0a,
  91     PROTOCOL_BINARY_CMD_VERSION = 0x0b,
  92     PROTOCOL_BINARY_CMD_GETK = 0x0c,
  93     PROTOCOL_BINARY_CMD_GETKQ = 0x0d,
  94     PROTOCOL_BINARY_CMD_APPEND = 0x0e,
  95     PROTOCOL_BINARY_CMD_PREPEND = 0x0f,
  96     PROTOCOL_BINARY_CMD_STAT    = 0x10
  97   } protocol_binary_command;
  98
  99   /**
 100    * Definition of the data types in the packet
 101    * See section 3.4 Data Types
 102    */
 103   typedef enum {
 104     PROTOCOL_BINARY_RAW_BYTES = 0x00
 105   } protocol_binary_datatypes;
 106
 107   /**
 108    * Definition of the header structure for a request packet.
 109    * See section 2
 110    */
 111   typedef union {
 112     struct {
 113       uint8_t magic;
 114       uint8_t opcode;
 115       uint16_t keylen;
 116       uint8_t extlen;
 117       uint8_t datatype;
 118       uint16_t reserved;
 119       uint32_t bodylen;
 120       uint32_t opaque;
 121       uint64_t cas;
 122     } request;
 123     uint8_t bytes[24];
 124   } protocol_binary_request_header;
 125
 126   /**
 127    * Definition of the header structure for a response packet.
 128    * See section 2
 129    */
 130   typedef union {
 131     struct {
 132       uint8_t magic;
 133       uint8_t opcode;
 134       uint16_t keylen;
 135       uint8_t extlen;
 136       uint8_t datatype;
 137       uint16_t status;
 138       uint32_t bodylen;
 139       uint32_t opaque;
 140       uint64_t cas;
 141     } response;
 142     uint8_t bytes[24];
 143   } protocol_binary_response_header;
 144
 145   /**
 146    * Definition of a request-packet containing no extras
 147    */
 148   typedef union {
 149     struct {
 150       protocol_binary_request_header header;
 151     } message;
 152     uint8_t bytes[sizeof(protocol_binary_request_header)];
 153   } protocol_binary_request_no_extras;
 154
 155   /**
 156    * Definition of a response-packet containing no extras
 157    */
 158   typedef union {
 159     struct {
 160       protocol_binary_response_header header;
 161     } message;
 162     uint8_t bytes[sizeof(protocol_binary_response_header)];
 163   } protocol_binary_response_no_extras;
 164
 165   /**
 166    * Definition of the packet used by the get, getq, getk and getkq command.
 167    * See section 4
 168    */
 169   typedef protocol_binary_request_no_extras protocol_binary_request_get;
 170   typedef protocol_binary_request_no_extras protocol_binary_request_getq;
 171   typedef protocol_binary_request_no_extras protocol_binary_request_getk;
 172   typedef protocol_binary_request_no_extras protocol_binary_request_getkq;
 173
 174   /**
 175    * Definition of the packet returned from a successful get, getq, getk and
 176    * getkq.
 177    * See section 4
 178    */
 179   typedef union {
 180     struct {
 181       protocol_binary_response_header header;
 182       struct {
 183         uint32_t flags;
 184       } body;
 185     } message;
 186     uint8_t bytes[sizeof(protocol_binary_response_header) + 4];
 187   } protocol_binary_response_get;
 188
 189   typedef protocol_binary_response_get protocol_binary_response_getq;
 190   typedef protocol_binary_response_get protocol_binary_response_getk;
 191   typedef protocol_binary_response_get protocol_binary_response_getkq;
 192
 193   /**
 194    * Definition of the packet used by the delete command
 195    * See section 4
 196    */
 197   typedef protocol_binary_request_no_extras protocol_binary_request_delete;
 198
 199   /**
 200    * Definition of the packet returned by the delete command
 201    * See section 4
 202    */
 203   typedef protocol_binary_response_no_extras protocol_binary_response_delete;
 204
 205   /**
 206    * Definition of the packet used by the flush command
 207    * See section 4
 208    * Please note that the expiration field is optional, so remember to see
 209    * check the header.bodysize to see if it is present.
 210    */
 211   typedef union {
 212     struct {
 213       protocol_binary_request_header header;
 214       struct {
 215         uint32_t expiration;
 216       } body;
 217     } message;
 218     uint8_t bytes[sizeof(protocol_binary_request_header) + 4];
 219   } protocol_binary_request_flush;
 220
 221   /**
 222    * Definition of the packet returned by the flush command
 223    * See section 4
 224    */
 225   typedef protocol_binary_response_no_extras protocol_binary_response_flush;
 226
 227   /**
 228    * Definition of the packet used by set, add and replace
 229    * See section 4
 230    */
 231   typedef union {
 232     struct {
 233       protocol_binary_request_header header;
 234       struct {
 235         uint32_t flags;
 236         uint32_t expiration;
 237       } body;
 238     } message;
 239     uint8_t bytes[sizeof(protocol_binary_request_header) + 8];
 240   } protocol_binary_request_set;
 241   typedef protocol_binary_request_set protocol_binary_request_add;
 242   typedef protocol_binary_request_set protocol_binary_request_replace;
 243
 244   /**
 245    * Definition of the packet returned by set, add and replace
 246    * See section 4
 247    */
 248   typedef protocol_binary_response_no_extras protocol_binary_response_set;
 249   typedef protocol_binary_response_no_extras protocol_binary_response_add;
 250   typedef protocol_binary_response_no_extras protocol_binary_response_replace;
 251
 252   /**
 253    * Definition of the noop packet
 254    * See section 4
 255    */
 256   typedef protocol_binary_request_no_extras protocol_binary_request_noop;
 257
 258   /**
 259    * Definition of the packet returned by the noop command
 260    * See section 4
 261    */
 262   typedef protocol_binary_response_no_extras protocol_binary_response_nnoop;
 263
 264   /**
 265    * Definition of the structure used by the increment and decrement
 266    * command.
 267    * See section 4
 268    */
 269   typedef union {
 270     struct {
 271       protocol_binary_request_header header;
 272       struct {
 273         uint64_t delta;
 274         uint64_t initial;
 275         uint32_t expiration;
 276       } body;
 277     } message;
 278     uint8_t bytes[sizeof(protocol_binary_request_header) + 20];
 279   } protocol_binary_request_incr;
 280   typedef protocol_binary_request_incr protocol_binary_request_decr;
 281
 282   /**
 283    * Definition of the response from an incr or decr command
 284    * command.
 285    * See section 4
 286    */
 287   typedef union {
 288     struct {
 289       protocol_binary_response_header header;
 290       struct {
 291         uint64_t value;
 292       } body;
 293     } message;
 294     uint8_t bytes[sizeof(protocol_binary_response_header) + 8];
 295   } protocol_binary_response_incr;
 296   typedef protocol_binary_response_incr protocol_binary_response_decr;
 297
 298   /**
 299    * Definition of the quit
 300    * See section 4
 301    */
 302   typedef protocol_binary_request_no_extras protocol_binary_request_quit;
 303
 304   /**
 305    * Definition of the packet returned by the quit command
 306    * See section 4
 307    */
 308   typedef protocol_binary_response_no_extras protocol_binary_response_quit;
 309
 310   /**
 311    * Definition of the packet used by append and prepend command
 312    * See section 4
 313    */
 314   typedef protocol_binary_request_no_extras protocol_binary_request_append;
 315   typedef protocol_binary_request_no_extras protocol_binary_request_prepend;
 316
 317   /**
 318    * Definition of the packet returned from a successful append or prepend
 319    * See section 4
 320    */
 321   typedef protocol_binary_response_no_extras protocol_binary_response_append;
 322   typedef protocol_binary_response_no_extras protocol_binary_response_prepend;
 323
 324   /**
 325    * Definition of the packet used by the version command
 326    * See section 4
 327    */
 328   typedef protocol_binary_request_no_extras protocol_binary_request_version;
 329
 330   /**
 331    * Definition of the packet returned from a successful version command
 332    * See section 4
 333    */
 334   typedef protocol_binary_response_no_extras protocol_binary_response_version;
 335
 336
 337   /**
 338    * Definition of the packet used by the stats command.
 339    * See section 4
 340    */
 341   typedef protocol_binary_request_no_extras protocol_binary_request_stats;
 342
 343   /**
 344    * Definition of the packet returned from a successful stats command
 345    * See section 4
 346    */
 347   typedef protocol_binary_response_no_extras protocol_binary_response_stats;
 348 #ifdef __cplusplus
 349 }
 350 #endif
 351 #endif /* PROTOCOL_BINARY_H */