include/nfsc/libnfs-zdr.h

   1 /*
   2    Copyright (C) 2012 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU Lesser General Public License as published by
   6    the Free Software Foundation; either version 2.1 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public License
  15    along with this program; if not, see <http://www.gnu.org/licenses/>.
  16 */
  17 /*
  18  * This file contains definitions for the built in ZDR implementation.
  19  * This is a very limited ZDR subset that can only marshal to/from a momory buffer,
  20  * i.e. zdrmem_create() buffers.
  21  * It aims to be compatible with normal rpcgen generated functions.
  22  */
  23
  24 /************************************************************
  25  * Definitions copied from RFC 5531
  26  * and slightly modified.
  27  ************************************************************/
  28
  29 #ifndef _LIBNFS_ZDR_H_
  30 #define _LIBNFS_ZDR_H_
  31
  32 #ifdef WIN32
  33 #ifndef CADDR_T_DEFINED
  34 #define CADDR_T_DEFINED
  35 typedef char *caddr_t;
  36 #endif
  37 #endif
  38
  39 #include <stdio.h>
  40 #include <assert.h>
  41 #include <stdint.h>
  42 #include <sys/types.h>
  43
  44 #ifdef __cplusplus
  45 extern "C" {
  46 #endif
  47
  48 #define _RPC_RPC_H 1
  49 #define _RPC_ZDR_H 1
  50 #define _RPC_AUTH_H 1
  51
  52 /* we dont need these */
  53 typedef void CLIENT;
  54 struct svc_req {
  55         int _dummy_;
  56 };
  57 typedef void SVCXPRT;
  58
  59
  60
  61
  62
  63 #define ZDR_INLINE(...) NULL
  64 #define IZDR_PUT_U_LONG(...)            assert(0)
  65 #define IZDR_GET_U_LONG(...)            (assert(0), 0)
  66 #define IZDR_PUT_LONG(...)              assert(0)
  67 #define IZDR_GET_LONG(...)              (assert(0), 0)
  68 #define IZDR_PUT_BOOL(...)              assert(0)
  69 #define IZDR_GET_BOOL(...)              (assert(0), 0)
  70
  71 #ifndef TRUE
  72 #define TRUE            1
  73 #endif
  74 #ifndef FALSE
  75 #define FALSE           0
  76 #endif
  77
  78 enum zdr_op {
  79         ZDR_ENCODE = 0,
  80         ZDR_DECODE = 1
  81 };
  82
  83 struct zdr_mem {
  84        struct zdr_mem *next;
  85        caddr_t buf;
  86        uint32_t size;
  87 };
  88
  89 struct ZDR {
  90         enum zdr_op x_op;
  91         caddr_t buf;
  92         int size;
  93         int pos;
  94         struct zdr_mem *mem;
  95 };
  96 typedef struct ZDR ZDR;
  97
  98
  99 typedef uint32_t u_int;
 100 typedef uint32_t enum_t;
 101 typedef uint32_t bool_t;
 102
 103 typedef int (*zdrproc_t) (ZDR *, void *,...);
 104
 105 #define AUTH_NONE 0
 106 #define AUTH_NULL 0
 107 #define AUTH_UNIX 1
 108
 109 struct opaque_auth {
 110         uint32_t oa_flavor;
 111         caddr_t  oa_base;
 112         uint32_t oa_length;
 113 };
 114 extern struct opaque_auth _null_auth;
 115
 116 struct AUTH {
 117         struct opaque_auth      ah_cred;
 118         struct opaque_auth      ah_verf;
 119         caddr_t ah_private;
 120 };
 121
 122 #define RPC_MSG_VERSION 2
 123
 124 enum msg_type {
 125         CALL  = 0,
 126         REPLY = 1
 127 };
 128
 129 enum reply_stat {
 130         MSG_ACCEPTED=0,
 131         MSG_DENIED=1
 132 };
 133
 134 enum accept_stat {
 135         SUCCESS       = 0,
 136         PROG_UNAVAIL  = 1,
 137         PROG_MISMATCH = 2,
 138         PROC_UNAVAIL  = 3,
 139         GARBAGE_ARGS  = 4,
 140         SYSTEM_ERR    = 5
 141 };
 142
 143 enum reject_stat {
 144         RPC_MISMATCH = 0,
 145         AUTH_ERROR   = 1
 146 };
 147
 148 enum auth_stat {
 149         AUTH_OK=0,
 150         /*
 151          * failed at remote end
 152          */
 153         AUTH_BADCRED      = 1,          /* bogus credentials (seal broken) */
 154         AUTH_REJECTEDCRED = 2,          /* client should begin new session */
 155         AUTH_BADVERF      = 3,          /* bogus verifier (seal broken) */
 156         AUTH_REJECTEDVERF = 4,          /* verifier expired or was replayed */
 157         AUTH_TOOWEAK      = 5,          /* rejected due to security reasons */
 158         /*
 159          * failed locally
 160         */
 161         AUTH_INVALIDRESP  = 6,          /* bogus response verifier */
 162         AUTH_FAILED       = 7           /* some unknown reason */
 163 };
 164
 165 struct call_body {
 166         uint32_t rpcvers;
 167         uint32_t prog;
 168         uint32_t vers;
 169         uint32_t proc;
 170         struct opaque_auth cred;
 171         struct opaque_auth verf;
 172 };
 173
 174 struct accepted_reply {
 175         struct opaque_auth      verf;
 176         uint32_t                stat;
 177         union {
 178                 struct {
 179                         caddr_t where;
 180                         zdrproc_t proc;
 181                 } results;
 182                 struct {
 183                         uint32_t        low;
 184                         uint32_t        high;
 185                 } mismatch_info;
 186         } reply_data;
 187 };
 188
 189 struct rejected_reply {
 190         enum reject_stat stat;
 191         union {
 192                 struct {
 193                         uint32_t low;
 194                         uint32_t high;
 195                 } mismatch_info;
 196                 enum auth_stat stat;
 197         } reject_data;
 198 };
 199
 200 struct reply_body {
 201         uint32_t stat;
 202         union {
 203                 struct accepted_reply areply;
 204                 struct rejected_reply rreply;
 205         } reply;
 206 };
 207
 208 struct rpc_msg {
 209         uint32_t                  xid;
 210
 211         uint32_t                  direction;
 212         union {
 213                 struct call_body  cbody;
 214                 struct reply_body rbody;
 215         } body;
 216 };
 217
 218 #define zdrmem_create libnfs_zdrmem_create
 219 void libnfs_zdrmem_create(ZDR *zdrs, const caddr_t addr, uint32_t size, enum zdr_op xop);
 220
 221 #define zdr_destroy libnfs_zdr_destroy
 222 void libnfs_zdr_destroy(ZDR *zdrs);
 223
 224 #define zdr_bytes libnfs_zdr_bytes
 225 bool_t libnfs_zdr_bytes(ZDR *zdrs, char **bufp, uint32_t *size, uint32_t maxsize);
 226
 227 #define zdr_u_int libnfs_zdr_u_int
 228 bool_t libnfs_zdr_u_int(ZDR *zdrs, uint32_t *u);
 229
 230 #define zdr_int libnfs_zdr_int
 231 bool_t libnfs_zdr_int(ZDR *zdrs, int32_t *i);
 232
 233 #define zdr_uint64_t libnfs_zdr_uint64_t
 234 bool_t libnfs_zdr_uint64_t(ZDR *zdrs, uint64_t *u);
 235
 236 #define zdr_int64_t libnfs_zdr_int64_t
 237 bool_t libnfs_zdr_int64_t(ZDR *zdrs, int64_t *i);
 238
 239 #define zdr_enum libnfs_zdr_enum
 240 bool_t libnfs_zdr_enum(ZDR *zdrs, enum_t *e);
 241
 242 #define zdr_bool libnfs_zdr_bool
 243 bool_t libnfs_zdr_bool(ZDR *zdrs, bool_t *b);
 244
 245 #define zdr_void libnfs_zdr_void
 246 bool_t libnfs_zdr_void(void);
 247
 248 #define zdr_pointer libnfs_zdr_pointer
 249 bool_t libnfs_zdr_pointer(ZDR *zdrs, char **objp, uint32_t size, zdrproc_t proc);
 250
 251 #define zdr_opaque libnfs_zdr_opaque
 252 bool_t libnfs_zdr_opaque(ZDR *zdrs, char *objp, uint32_t size);
 253
 254 #define zdr_string libnfs_zdr_string
 255 bool_t libnfs_zdr_string(ZDR *zdrs, char **strp, uint32_t maxsize);
 256
 257 #define zdr_array libnfs_zdr_array
 258 bool_t libnfs_zdr_array(ZDR *zdrs, char **arrp, uint32_t *size, uint32_t maxsize, uint32_t elsize, zdrproc_t proc);
 259
 260 #define zdr_setpos libnfs_zdr_setpos
 261 bool_t libnfs_zdr_setpos(ZDR *zdrs, uint32_t pos);
 262
 263 #define zdr_getpos libnfs_zdr_getpos
 264 uint32_t libnfs_zdr_getpos(ZDR *zdrs);
 265
 266 #define zdr_free libnfs_zdr_free
 267 void libnfs_zdr_free(zdrproc_t proc, char *objp);
 268
 269 struct rpc_context;
 270
 271 #define zdr_callmsg libnfs_zdr_callmsg
 272 bool_t libnfs_zdr_callmsg(struct rpc_context *rpc, ZDR *zdrs, struct rpc_msg *msg);
 273
 274 #define zdr_replymsg libnfs_zdr_replymsg
 275 bool_t libnfs_zdr_replymsg(struct rpc_context *rpc, ZDR *zdrs, struct rpc_msg *msg);
 276
 277 #define authnone_create libnfs_authnone_create
 278 struct AUTH *libnfs_authnone_create(void);
 279
 280 #define authunix_create libnfs_authunix_create
 281 struct AUTH *libnfs_authunix_create(char *host, uint32_t uid, uint32_t gid, uint32_t len, uint32_t *groups);
 282
 283 #define authunix_create_default libnfs_authunix_create_default
 284 struct AUTH *libnfs_authunix_create_default(void);
 285
 286 #define auth_destroy libnfs_auth_destroy
 287 void libnfs_auth_destroy(struct AUTH *auth);
 288
 289 #ifdef __cplusplus
 290 }
 291 #endif
 292
 293 #endif