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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_CMD_SETQ = 0x11,
  98     PROTOCOL_BINARY_CMD_ADDQ = 0x12,
  99     PROTOCOL_BINARY_CMD_REPLACEQ = 0x13,
 100     PROTOCOL_BINARY_CMD_DELETEQ = 0x14,
 101     PROTOCOL_BINARY_CMD_INCREMENTQ = 0x15,
 102     PROTOCOL_BINARY_CMD_DECREMENTQ = 0x16,
 103     PROTOCOL_BINARY_CMD_QUITQ = 0x17,
 104     PROTOCOL_BINARY_CMD_FLUSHQ = 0x18,
 105     PROTOCOL_BINARY_CMD_APPENDQ = 0x19,
 106     PROTOCOL_BINARY_CMD_PREPENDQ = 0x1a
 107   } protocol_binary_command;
 108
 109   /**
 110    * Definition of the data types in the packet
 111    * See section 3.4 Data Types
 112    */
 113   typedef enum {
 114     PROTOCOL_BINARY_RAW_BYTES = 0x00
 115   } protocol_binary_datatypes;
 116
 117   /**
 118    * Definition of the header structure for a request packet.
 119    * See section 2
 120    */
 121   typedef union {
 122     struct {
 123       uint8_t magic;
 124       uint8_t opcode;
 125       uint16_t keylen;
 126       uint8_t extlen;
 127       uint8_t datatype;
 128       uint16_t reserved;
 129       uint32_t bodylen;
 130       uint32_t opaque;
 131       uint64_t cas;
 132     } request;
 133     uint8_t bytes[24];
 134   } protocol_binary_request_header;
 135
 136   /**
 137    * Definition of the header structure for a response packet.
 138    * See section 2
 139    */
 140   typedef union {
 141     struct {
 142       uint8_t magic;
 143       uint8_t opcode;
 144       uint16_t keylen;
 145       uint8_t extlen;
 146       uint8_t datatype;
 147       uint16_t status;
 148       uint32_t bodylen;
 149       uint32_t opaque;
 150       uint64_t cas;
 151     } response;
 152     uint8_t bytes[24];
 153   } protocol_binary_response_header;
 154
 155   /**
 156    * Definition of a request-packet containing no extras
 157    */
 158   typedef union {
 159     struct {
 160       protocol_binary_request_header header;
 161     } message;
 162     uint8_t bytes[sizeof(protocol_binary_request_header)];
 163   } protocol_binary_request_no_extras;
 164
 165   /**
 166    * Definition of a response-packet containing no extras
 167    */
 168   typedef union {
 169     struct {
 170       protocol_binary_response_header header;
 171     } message;
 172     uint8_t bytes[sizeof(protocol_binary_response_header)];
 173   } protocol_binary_response_no_extras;
 174
 175   /**
 176    * Definition of the packet used by the get, getq, getk and getkq command.
 177    * See section 4
 178    */
 179   typedef protocol_binary_request_no_extras protocol_binary_request_get;
 180   typedef protocol_binary_request_no_extras protocol_binary_request_getq;
 181   typedef protocol_binary_request_no_extras protocol_binary_request_getk;
 182   typedef protocol_binary_request_no_extras protocol_binary_request_getkq;
 183
 184   /**
 185    * Definition of the packet returned from a successful get, getq, getk and
 186    * getkq.
 187    * See section 4
 188    */
 189   typedef union {
 190     struct {
 191       protocol_binary_response_header header;
 192       struct {
 193         uint32_t flags;
 194       } body;
 195     } message;
 196     uint8_t bytes[sizeof(protocol_binary_response_header) + 4];
 197   } protocol_binary_response_get;
 198
 199   typedef protocol_binary_response_get protocol_binary_response_getq;
 200   typedef protocol_binary_response_get protocol_binary_response_getk;
 201   typedef protocol_binary_response_get protocol_binary_response_getkq;
 202
 203   /**
 204    * Definition of the packet used by the delete command
 205    * See section 4
 206    */
 207   typedef protocol_binary_request_no_extras protocol_binary_request_delete;
 208
 209   /**
 210    * Definition of the packet returned by the delete command
 211    * See section 4
 212    */
 213   typedef protocol_binary_response_no_extras protocol_binary_response_delete;
 214
 215   /**
 216    * Definition of the packet used by the flush command
 217    * See section 4
 218    * Please note that the expiration field is optional, so remember to see
 219    * check the header.bodysize to see if it is present.
 220    */
 221   typedef union {
 222     struct {
 223       protocol_binary_request_header header;
 224       struct {
 225         uint32_t expiration;
 226       } body;
 227     } message;
 228     uint8_t bytes[sizeof(protocol_binary_request_header) + 4];
 229   } protocol_binary_request_flush;
 230
 231   /**
 232    * Definition of the packet returned by the flush command
 233    * See section 4
 234    */
 235   typedef protocol_binary_response_no_extras protocol_binary_response_flush;
 236
 237   /**
 238    * Definition of the packet used by set, add and replace
 239    * See section 4
 240    */
 241   typedef union {
 242     struct {
 243       protocol_binary_request_header header;
 244       struct {
 245         uint32_t flags;
 246         uint32_t expiration;
 247       } body;
 248     } message;
 249     uint8_t bytes[sizeof(protocol_binary_request_header) + 8];
 250   } protocol_binary_request_set;
 251   typedef protocol_binary_request_set protocol_binary_request_add;
 252   typedef protocol_binary_request_set protocol_binary_request_replace;
 253
 254   /**
 255    * Definition of the packet returned by set, add and replace
 256    * See section 4
 257    */
 258   typedef protocol_binary_response_no_extras protocol_binary_response_set;
 259   typedef protocol_binary_response_no_extras protocol_binary_response_add;
 260   typedef protocol_binary_response_no_extras protocol_binary_response_replace;
 261
 262   /**
 263    * Definition of the noop packet
 264    * See section 4
 265    */
 266   typedef protocol_binary_request_no_extras protocol_binary_request_noop;
 267
 268   /**
 269    * Definition of the packet returned by the noop command
 270    * See section 4
 271    */
 272   typedef protocol_binary_response_no_extras protocol_binary_response_noop;
 273
 274   /**
 275    * Definition of the structure used by the increment and decrement
 276    * command.
 277    * See section 4
 278    */
 279   typedef union {
 280     struct {
 281       protocol_binary_request_header header;
 282       struct {
 283         uint64_t delta;
 284         uint64_t initial;
 285         uint32_t expiration;
 286       } body;
 287     } message;
 288     uint8_t bytes[sizeof(protocol_binary_request_header) + 20];
 289   } protocol_binary_request_incr;
 290   typedef protocol_binary_request_incr protocol_binary_request_decr;
 291
 292   /**
 293    * Definition of the response from an incr or decr command
 294    * command.
 295    * See section 4
 296    */
 297   typedef union {
 298     struct {
 299       protocol_binary_response_header header;
 300       struct {
 301         uint64_t value;
 302       } body;
 303     } message;
 304     uint8_t bytes[sizeof(protocol_binary_response_header) + 8];
 305   } protocol_binary_response_incr;
 306   typedef protocol_binary_response_incr protocol_binary_response_decr;
 307
 308   /**
 309    * Definition of the quit
 310    * See section 4
 311    */
 312   typedef protocol_binary_request_no_extras protocol_binary_request_quit;
 313
 314   /**
 315    * Definition of the packet returned by the quit command
 316    * See section 4
 317    */
 318   typedef protocol_binary_response_no_extras protocol_binary_response_quit;
 319
 320   /**
 321    * Definition of the packet used by append and prepend command
 322    * See section 4
 323    */
 324   typedef protocol_binary_request_no_extras protocol_binary_request_append;
 325   typedef protocol_binary_request_no_extras protocol_binary_request_prepend;
 326
 327   /**
 328    * Definition of the packet returned from a successful append or prepend
 329    * See section 4
 330    */
 331   typedef protocol_binary_response_no_extras protocol_binary_response_append;
 332   typedef protocol_binary_response_no_extras protocol_binary_response_prepend;
 333
 334   /**
 335    * Definition of the packet used by the version command
 336    * See section 4
 337    */
 338   typedef protocol_binary_request_no_extras protocol_binary_request_version;
 339
 340   /**
 341    * Definition of the packet returned from a successful version command
 342    * See section 4
 343    */
 344   typedef protocol_binary_response_no_extras protocol_binary_response_version;
 345
 346
 347   /**
 348    * Definition of the packet used by the stats command.
 349    * See section 4
 350    */
 351   typedef protocol_binary_request_no_extras protocol_binary_request_stats;
 352
 353   /**
 354    * Definition of the packet returned from a successful stats command
 355    * See section 4
 356    */
 357   typedef protocol_binary_response_no_extras protocol_binary_response_stats;
 358 #ifdef __cplusplus
 359 }
 360 #endif
 361 #endif /* PROTOCOL_BINARY_H */