[444] | 1 | /* |
---|
| 2 | * Copyright (c) 2009, 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 notice, |
---|
| 8 | * this list of conditions and the following disclaimer. |
---|
| 9 | * - Redistributions in binary form must reproduce the above copyright notice, |
---|
| 10 | * this list of conditions and the following disclaimer in the documentation |
---|
| 11 | * and/or other materials provided with the distribution. |
---|
| 12 | * - Neither the name of Sun Microsystems, Inc. nor the names of its |
---|
| 13 | * contributors may be used to endorse or promote products derived |
---|
| 14 | * from this software without specific prior written permission. |
---|
| 15 | * |
---|
| 16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
---|
| 17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
---|
| 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
---|
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
---|
| 20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
---|
| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
---|
| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
---|
| 23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
---|
| 24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
---|
| 25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
---|
| 26 | * POSSIBILITY OF SUCH DAMAGE. |
---|
| 27 | */ |
---|
| 28 | |
---|
| 29 | /* |
---|
| 30 | * xdr_mem.h, XDR implementation using memory buffers. |
---|
| 31 | * |
---|
| 32 | * Copyright (C) 1984, Sun Microsystems, Inc. |
---|
| 33 | * |
---|
| 34 | * If you have some data to be interpreted as external data representation |
---|
| 35 | * or to be converted to external data representation in a memory buffer, |
---|
| 36 | * then this is the package for you. |
---|
| 37 | * |
---|
| 38 | */ |
---|
| 39 | |
---|
| 40 | #include <sys/types.h> |
---|
| 41 | #include <string.h> |
---|
| 42 | #include <limits.h> |
---|
| 43 | |
---|
| 44 | #include <rpc/types.h> |
---|
| 45 | #include <rpc/xdr.h> |
---|
| 46 | |
---|
| 47 | #include "xdr_private.h" |
---|
| 48 | |
---|
| 49 | #ifndef ntohl |
---|
| 50 | # define ntohl(x) xdr_ntohl(x) |
---|
| 51 | #endif |
---|
| 52 | #ifndef htonl |
---|
| 53 | # define htonl(x) xdr_htonl(x) |
---|
| 54 | #endif |
---|
| 55 | |
---|
| 56 | static void xdrmem_destroy (XDR *); |
---|
| 57 | static bool_t xdrmem_getlong_aligned (XDR *, long *); |
---|
| 58 | static bool_t xdrmem_putlong_aligned (XDR *, const long *); |
---|
| 59 | static bool_t xdrmem_getlong_unaligned (XDR *, long *); |
---|
| 60 | static bool_t xdrmem_putlong_unaligned (XDR *, const long *); |
---|
| 61 | static bool_t xdrmem_getbytes (XDR *, char *, u_int); |
---|
| 62 | static bool_t xdrmem_putbytes (XDR *, const char *, u_int); |
---|
| 63 | /* XXX: w/64-bit pointers, u_int not enough! */ |
---|
| 64 | static u_int xdrmem_getpos (XDR *); |
---|
| 65 | static bool_t xdrmem_setpos (XDR *, u_int); |
---|
| 66 | static int32_t * xdrmem_inline_aligned (XDR *, u_int); |
---|
| 67 | static int32_t * xdrmem_inline_unaligned (XDR *, u_int); |
---|
| 68 | static bool_t xdrmem_getint32_aligned (XDR *, int32_t *); |
---|
| 69 | static bool_t xdrmem_putint32_aligned (XDR *, const int32_t *); |
---|
| 70 | static bool_t xdrmem_getint32_unaligned (XDR *, int32_t *); |
---|
| 71 | static bool_t xdrmem_putint32_unaligned (XDR *, const int32_t *); |
---|
| 72 | |
---|
| 73 | static const struct xdr_ops xdrmem_ops_aligned = { |
---|
| 74 | xdrmem_getlong_aligned, |
---|
| 75 | xdrmem_putlong_aligned, |
---|
| 76 | xdrmem_getbytes, |
---|
| 77 | xdrmem_putbytes, |
---|
| 78 | xdrmem_getpos, |
---|
| 79 | xdrmem_setpos, |
---|
| 80 | xdrmem_inline_aligned, |
---|
| 81 | xdrmem_destroy, |
---|
| 82 | xdrmem_getint32_aligned, |
---|
| 83 | xdrmem_putint32_aligned |
---|
| 84 | }; |
---|
| 85 | |
---|
| 86 | static const struct xdr_ops xdrmem_ops_unaligned = { |
---|
| 87 | xdrmem_getlong_unaligned, |
---|
| 88 | xdrmem_putlong_unaligned, |
---|
| 89 | xdrmem_getbytes, |
---|
| 90 | xdrmem_putbytes, |
---|
| 91 | xdrmem_getpos, |
---|
| 92 | xdrmem_setpos, |
---|
| 93 | xdrmem_inline_unaligned, |
---|
| 94 | xdrmem_destroy, |
---|
| 95 | xdrmem_getint32_unaligned, |
---|
| 96 | xdrmem_putint32_unaligned |
---|
| 97 | }; |
---|
| 98 | |
---|
| 99 | /* |
---|
| 100 | * The procedure xdrmem_create initializes a stream descriptor for a |
---|
| 101 | * memory buffer. |
---|
| 102 | */ |
---|
| 103 | void |
---|
| 104 | xdrmem_create (XDR * xdrs, |
---|
| 105 | caddr_t addr, |
---|
| 106 | u_int size, |
---|
| 107 | enum xdr_op op) |
---|
| 108 | { |
---|
| 109 | xdrs->x_op = op; |
---|
| 110 | xdrs->x_ops = ((unsigned long)addr & (sizeof (int32_t) - 1)) |
---|
| 111 | ? (struct xdr_ops *)&xdrmem_ops_unaligned |
---|
| 112 | : (struct xdr_ops *)&xdrmem_ops_aligned; |
---|
| 113 | xdrs->x_private = xdrs->x_base = addr; |
---|
| 114 | xdrs->x_handy = size; |
---|
| 115 | } |
---|
| 116 | |
---|
| 117 | static void |
---|
| 118 | xdrmem_destroy (XDR * xdrs) |
---|
| 119 | { |
---|
| 120 | } |
---|
| 121 | |
---|
| 122 | static bool_t |
---|
| 123 | xdrmem_getlong_aligned (XDR * xdrs, |
---|
| 124 | long *lp) |
---|
| 125 | { |
---|
| 126 | if (xdrs->x_handy < sizeof (int32_t)) |
---|
| 127 | return FALSE; |
---|
| 128 | xdrs->x_handy -= sizeof (int32_t); |
---|
| 129 | *lp = (int32_t) ntohl (*(u_int32_t *) xdrs->x_private); |
---|
| 130 | xdrs->x_private = (char *) xdrs->x_private + sizeof (int32_t); |
---|
| 131 | return TRUE; |
---|
| 132 | } |
---|
| 133 | |
---|
| 134 | static bool_t |
---|
| 135 | xdrmem_putlong_aligned (XDR * xdrs, |
---|
| 136 | const long *lp) |
---|
| 137 | { |
---|
| 138 | if (xdrs->x_handy < sizeof (int32_t)) |
---|
| 139 | return FALSE; |
---|
| 140 | xdrs->x_handy -= sizeof (int32_t); |
---|
| 141 | *(u_int32_t *) xdrs->x_private = htonl ((u_int32_t) * lp); |
---|
| 142 | xdrs->x_private = (char *) xdrs->x_private + sizeof (int32_t); |
---|
| 143 | return TRUE; |
---|
| 144 | } |
---|
| 145 | |
---|
| 146 | static bool_t |
---|
| 147 | xdrmem_getlong_unaligned (XDR * xdrs, |
---|
| 148 | long *lp) |
---|
| 149 | { |
---|
| 150 | u_int32_t l; |
---|
| 151 | |
---|
| 152 | if (xdrs->x_handy < sizeof (int32_t)) |
---|
| 153 | return FALSE; |
---|
| 154 | xdrs->x_handy -= sizeof (int32_t); |
---|
| 155 | memmove (&l, xdrs->x_private, sizeof (int32_t)); |
---|
| 156 | *lp = ntohl (l); |
---|
| 157 | xdrs->x_private = (char *) xdrs->x_private + sizeof (int32_t); |
---|
| 158 | return TRUE; |
---|
| 159 | } |
---|
| 160 | |
---|
| 161 | static bool_t |
---|
| 162 | xdrmem_putlong_unaligned (XDR * xdrs, |
---|
| 163 | const long *lp) |
---|
| 164 | { |
---|
| 165 | u_int32_t l; |
---|
| 166 | |
---|
| 167 | if (xdrs->x_handy < sizeof (int32_t)) |
---|
| 168 | return FALSE; |
---|
| 169 | xdrs->x_handy -= sizeof (int32_t); |
---|
| 170 | l = htonl ((u_int32_t) * lp); |
---|
| 171 | memmove (xdrs->x_private, &l, sizeof (int32_t)); |
---|
| 172 | xdrs->x_private = (char *) xdrs->x_private + sizeof (int32_t); |
---|
| 173 | return TRUE; |
---|
| 174 | } |
---|
| 175 | |
---|
| 176 | static bool_t |
---|
| 177 | xdrmem_getbytes (XDR * xdrs, |
---|
| 178 | char *addr, |
---|
| 179 | u_int len) |
---|
| 180 | { |
---|
| 181 | if (xdrs->x_handy < len) |
---|
| 182 | return FALSE; |
---|
| 183 | xdrs->x_handy -= len; |
---|
| 184 | memmove (addr, xdrs->x_private, len); |
---|
| 185 | xdrs->x_private = (char *) xdrs->x_private + len; |
---|
| 186 | return TRUE; |
---|
| 187 | } |
---|
| 188 | |
---|
| 189 | static bool_t |
---|
| 190 | xdrmem_putbytes (XDR * xdrs, |
---|
| 191 | const char *addr, |
---|
| 192 | u_int len) |
---|
| 193 | { |
---|
| 194 | if (xdrs->x_handy < len) |
---|
| 195 | return FALSE; |
---|
| 196 | xdrs->x_handy -= len; |
---|
| 197 | memmove (xdrs->x_private, addr, len); |
---|
| 198 | xdrs->x_private = (char *) xdrs->x_private + len; |
---|
| 199 | return TRUE; |
---|
| 200 | } |
---|
| 201 | |
---|
| 202 | static u_int |
---|
| 203 | xdrmem_getpos (XDR * xdrs) |
---|
| 204 | { |
---|
| 205 | /* XXX w/64-bit pointers, u_int not enough! */ |
---|
| 206 | return (u_int) ((u_long) xdrs->x_private - (u_long) xdrs->x_base); |
---|
| 207 | } |
---|
| 208 | |
---|
| 209 | static bool_t |
---|
| 210 | xdrmem_setpos (XDR * xdrs, |
---|
| 211 | u_int pos) |
---|
| 212 | { |
---|
| 213 | caddr_t newaddr = xdrs->x_base + pos; |
---|
| 214 | caddr_t lastaddr = (caddr_t) xdrs->x_private + xdrs->x_handy; |
---|
| 215 | size_t handy = lastaddr - newaddr; |
---|
| 216 | |
---|
| 217 | if (newaddr > lastaddr |
---|
| 218 | || newaddr < xdrs->x_base |
---|
| 219 | || handy != (u_int) handy) |
---|
| 220 | return FALSE; |
---|
| 221 | |
---|
| 222 | xdrs->x_private = newaddr; |
---|
| 223 | xdrs->x_handy = (u_int) handy; |
---|
| 224 | /* XXX sizeof(u_int) <? sizeof(ptrdiff_t) */ |
---|
| 225 | return TRUE; |
---|
| 226 | } |
---|
| 227 | |
---|
| 228 | static int32_t * |
---|
| 229 | xdrmem_inline_aligned (XDR * xdrs, |
---|
| 230 | u_int len) |
---|
| 231 | { |
---|
| 232 | int32_t *buf = 0; |
---|
| 233 | |
---|
| 234 | if (xdrs->x_handy >= len) |
---|
| 235 | { |
---|
| 236 | xdrs->x_handy -= len; |
---|
| 237 | buf = (int32_t *) xdrs->x_private; |
---|
| 238 | xdrs->x_private = (char *) xdrs->x_private + len; |
---|
| 239 | } |
---|
| 240 | return (buf); |
---|
| 241 | } |
---|
| 242 | |
---|
| 243 | static int32_t * |
---|
| 244 | xdrmem_inline_unaligned (XDR * xdrs, |
---|
| 245 | u_int len) |
---|
| 246 | { |
---|
| 247 | return (0); |
---|
| 248 | } |
---|
| 249 | |
---|
| 250 | static bool_t |
---|
| 251 | xdrmem_getint32_aligned (XDR *xdrs, |
---|
| 252 | int32_t *ip) |
---|
| 253 | { |
---|
| 254 | if (xdrs->x_handy < sizeof(int32_t)) |
---|
| 255 | return FALSE; |
---|
| 256 | xdrs->x_handy -= sizeof(int32_t); |
---|
| 257 | *ip = (int32_t) ntohl (*(u_int32_t *) xdrs->x_private); |
---|
| 258 | xdrs->x_private = (char *) xdrs->x_private + sizeof (int32_t); |
---|
| 259 | return TRUE; |
---|
| 260 | } |
---|
| 261 | |
---|
| 262 | static bool_t |
---|
| 263 | xdrmem_putint32_aligned (XDR *xdrs, |
---|
| 264 | const int32_t *ip) |
---|
| 265 | { |
---|
| 266 | if (xdrs->x_handy < sizeof(int32_t)) |
---|
| 267 | return FALSE; |
---|
| 268 | xdrs->x_handy -= sizeof(int32_t); |
---|
| 269 | *(u_int32_t *) xdrs->x_private = htonl ((u_int32_t) * ip); |
---|
| 270 | xdrs->x_private = (char *) xdrs->x_private + sizeof (int32_t); |
---|
| 271 | return TRUE; |
---|
| 272 | } |
---|
| 273 | |
---|
| 274 | static bool_t |
---|
| 275 | xdrmem_getint32_unaligned (XDR *xdrs, |
---|
| 276 | int32_t *ip) |
---|
| 277 | { |
---|
| 278 | u_int32_t l; |
---|
| 279 | |
---|
| 280 | if (xdrs->x_handy < sizeof(int32_t)) |
---|
| 281 | return FALSE; |
---|
| 282 | xdrs->x_handy -= sizeof(int32_t); |
---|
| 283 | memmove (&l, xdrs->x_private, sizeof (int32_t)); |
---|
| 284 | *ip = (int32_t) ntohl (l); |
---|
| 285 | xdrs->x_private = (char *) xdrs->x_private + sizeof (int32_t); |
---|
| 286 | return TRUE; |
---|
| 287 | } |
---|
| 288 | |
---|
| 289 | static bool_t |
---|
| 290 | xdrmem_putint32_unaligned (XDR *xdrs, |
---|
| 291 | const int32_t *ip) |
---|
| 292 | { |
---|
| 293 | u_int32_t l; |
---|
| 294 | |
---|
| 295 | if (xdrs->x_handy < sizeof(int32_t)) |
---|
| 296 | return FALSE; |
---|
| 297 | xdrs->x_handy -= sizeof(int32_t); |
---|
| 298 | l = htonl ((u_int32_t) * ip); |
---|
| 299 | memmove (xdrs->x_private, &l, sizeof (int32_t)); |
---|
| 300 | xdrs->x_private = (char *) xdrs->x_private + sizeof (int32_t); |
---|
| 301 | return TRUE; |
---|
| 302 | } |
---|
| 303 | |
---|