2 Unix SMB/CIFS implementation.
4 TDR (Trivial Data Representation) helper functions
5 Based loosely on ndr.c by Andrew Tridgell.
7 Copyright (C) Jelmer Vernooij 2005
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 #include "system/network.h"
27 #define TDR_BASE_MARSHALL_SIZE 1024
29 #define TDR_PUSH_NEED_BYTES(tdr, n) TDR_CHECK(tdr_push_expand(tdr, tdr->offset+(n)))
31 #define TDR_PULL_NEED_BYTES(tdr, n) do { \
32 if ((n) > tdr->data.length || tdr->offset + (n) > tdr->data.length) { \
33 return NT_STATUS_BUFFER_TOO_SMALL; \
37 #define TDR_BE(tdr) ((tdr)->flags & TDR_BIG_ENDIAN)
39 #define TDR_CVAL(tdr, ofs) CVAL(tdr->data.data,ofs)
40 #define TDR_SVAL(tdr, ofs) (TDR_BE(tdr)?RSVAL(tdr->data.data,ofs):SVAL(tdr->data.data,ofs))
41 #define TDR_IVAL(tdr, ofs) (TDR_BE(tdr)?RIVAL(tdr->data.data,ofs):IVAL(tdr->data.data,ofs))
42 #define TDR_IVALS(tdr, ofs) (TDR_BE(tdr)?RIVALS(tdr->data.data,ofs):IVALS(tdr->data.data,ofs))
43 #define TDR_SCVAL(tdr, ofs, v) SCVAL(tdr->data.data,ofs,v)
44 #define TDR_SSVAL(tdr, ofs, v) do { if (TDR_BE(tdr)) { RSSVAL(tdr->data.data,ofs,v); } else SSVAL(tdr->data.data,ofs,v); } while (0)
45 #define TDR_SIVAL(tdr, ofs, v) do { if (TDR_BE(tdr)) { RSIVAL(tdr->data.data,ofs,v); } else SIVAL(tdr->data.data,ofs,v); } while (0)
46 #define TDR_SIVALS(tdr, ofs, v) do { if (TDR_BE(tdr)) { RSIVALS(tdr->data.data,ofs,v); } else SIVALS(tdr->data.data,ofs,v); } while (0)
49 expand the available space in the buffer to 'size'
51 NTSTATUS tdr_push_expand(struct tdr_push *tdr, uint32_t size)
53 if (talloc_get_size(tdr->data.data) >= size) {
57 tdr->data.data = talloc_realloc(tdr, tdr->data.data, uint8_t, tdr->data.length + TDR_BASE_MARSHALL_SIZE);
58 return NT_STATUS_NO_MEMORY;
62 NTSTATUS tdr_pull_uint8(struct tdr_pull *tdr, uint8_t *v)
64 TDR_PULL_NEED_BYTES(tdr, 1);
65 *v = TDR_CVAL(tdr, tdr->offset);
70 NTSTATUS tdr_push_uint8(struct tdr_push *tdr, const uint8_t *v)
72 TDR_PUSH_NEED_BYTES(tdr, 1);
73 TDR_SCVAL(tdr, tdr->offset, *v);
78 NTSTATUS tdr_print_uint8(struct tdr_print *tdr, const char *name, uint8_t *v)
80 tdr->print(tdr, "%-25s: 0x%02x (%u)", name, *v, *v);
84 NTSTATUS tdr_pull_uint16(struct tdr_pull *tdr, uint16_t *v)
86 TDR_PULL_NEED_BYTES(tdr, 2);
87 *v = TDR_SVAL(tdr, tdr->offset);
92 NTSTATUS tdr_push_uint16(struct tdr_push *tdr, const uint16_t *v)
94 TDR_PUSH_NEED_BYTES(tdr, 2);
95 TDR_SSVAL(tdr, tdr->offset, *v);
100 NTSTATUS tdr_print_uint16(struct tdr_print *tdr, const char *name, uint16_t *v)
102 tdr->print(tdr, "%-25s: 0x%02x (%u)", name, *v, *v);
106 NTSTATUS tdr_pull_uint32(struct tdr_pull *tdr, uint32_t *v)
108 TDR_PULL_NEED_BYTES(tdr, 4);
109 *v = TDR_IVAL(tdr, tdr->offset);
114 NTSTATUS tdr_push_uint32(struct tdr_push *tdr, const uint32_t *v)
116 TDR_PUSH_NEED_BYTES(tdr, 4);
117 TDR_SIVAL(tdr, tdr->offset, *v);
122 NTSTATUS tdr_print_uint32(struct tdr_print *tdr, const char *name, uint32_t *v)
124 tdr->print(tdr, "%-25s: 0x%02x (%u)", name, *v, *v);
128 NTSTATUS tdr_pull_charset(struct tdr_pull *tdr, const char **v, uint32_t length, uint32_t el_size, int chset)
135 length = ascii_len_n((const char*)tdr->data.data+tdr->offset, tdr->data.length-tdr->offset);
138 length = utf16_len_n(tdr->data.data+tdr->offset, tdr->data.length-tdr->offset);
142 return NT_STATUS_INVALID_PARAMETER;
147 *v = talloc_strdup(tdr, "");
151 TDR_PULL_NEED_BYTES(tdr, el_size*length);
153 ret = convert_string_talloc(tdr, chset, CH_UNIX, tdr->data.data+tdr->offset, el_size*length, discard_const_p(void *, v));
156 return NT_STATUS_INVALID_PARAMETER;
159 tdr->offset += length * el_size;
164 NTSTATUS tdr_push_charset(struct tdr_push *tdr, const char **v, uint32_t length, uint32_t el_size, int chset)
166 ssize_t ret, required;
168 required = el_size * length;
169 TDR_PUSH_NEED_BYTES(tdr, required);
171 ret = convert_string(CH_UNIX, chset, *v, strlen(*v), tdr->data.data+tdr->offset, required);
174 return NT_STATUS_INVALID_PARAMETER;
177 /* Make sure the remaining part of the string is filled with zeroes */
178 if (ret < required) {
179 memset(tdr->data.data+tdr->offset+ret, 0, required-ret);
182 tdr->offset += required;
187 NTSTATUS tdr_print_charset(struct tdr_print *tdr, const char *name, const char **v, uint32_t length, uint32_t el_size, int chset)
189 tdr->print(tdr, "%-25s: %s", name, *v);
196 NTSTATUS tdr_pull_ipv4address(struct tdr_pull *tdr, const char **address)
199 TDR_CHECK(tdr_pull_uint32(tdr, &in.addr));
200 in.addr = htonl(in.addr);
201 *address = talloc_strdup(tdr, sys_inet_ntoa(in));
202 NT_STATUS_HAVE_NO_MEMORY(*address);
209 NTSTATUS tdr_push_ipv4address(struct tdr_push *tdr, const char **address)
211 uint32_t addr = htonl(interpret_addr(*address));
212 TDR_CHECK(tdr_push_uint32(tdr, &addr));
219 NTSTATUS tdr_print_ipv4address(struct tdr_print *tdr, const char *name,
220 const char **address)
222 tdr->print(tdr, "%-25s: %s", name, *address);
229 NTSTATUS tdr_pull_hyper(struct tdr_pull *tdr, uint64_t *v)
231 TDR_PULL_NEED_BYTES(tdr, 8);
232 *v = TDR_IVAL(tdr, tdr->offset);
233 *v |= (uint64_t)(TDR_IVAL(tdr, tdr->offset+4)) << 32;
241 NTSTATUS tdr_push_hyper(struct tdr_push *tdr, uint64_t *v)
243 TDR_PUSH_NEED_BYTES(tdr, 8);
244 TDR_SIVAL(tdr, tdr->offset, ((*v) & 0xFFFFFFFF));
245 TDR_SIVAL(tdr, tdr->offset+4, ((*v)>>32));
255 NTSTATUS tdr_push_NTTIME(struct tdr_push *tdr, NTTIME *t)
257 TDR_CHECK(tdr_push_hyper(tdr, t));
264 NTSTATUS tdr_pull_NTTIME(struct tdr_pull *tdr, NTTIME *t)
266 TDR_CHECK(tdr_pull_hyper(tdr, t));
273 NTSTATUS tdr_push_time_t(struct tdr_push *tdr, time_t *t)
275 return tdr_push_uint32(tdr, (uint32_t *)t);
281 NTSTATUS tdr_pull_time_t(struct tdr_pull *tdr, time_t *t)
284 TDR_CHECK(tdr_pull_uint32(tdr, &tt));
289 NTSTATUS tdr_print_time_t(struct tdr_print *tdr, const char *name, time_t *t)
291 if (*t == (time_t)-1 || *t == 0) {
292 tdr->print(tdr, "%-25s: (time_t)%d", name, (int)*t);
294 tdr->print(tdr, "%-25s: %s", name, timestring(tdr, *t));
300 NTSTATUS tdr_print_NTTIME(struct tdr_print *tdr, const char *name, NTTIME *t)
302 tdr->print(tdr, "%-25s: %s", name, nt_time_string(tdr, *t));
307 NTSTATUS tdr_print_DATA_BLOB(struct tdr_print *tdr, const char *name, DATA_BLOB *r)
309 tdr->print(tdr, "%-25s: DATA_BLOB length=%u", name, r->length);
311 dump_data(10, r->data, r->length);
317 #define TDR_ALIGN(tdr,n) (((tdr)->offset & ((n)-1)) == 0?0:((n)-((tdr)->offset&((n)-1))))
320 push a DATA_BLOB onto the wire.
322 NTSTATUS tdr_push_DATA_BLOB(struct tdr_push *tdr, DATA_BLOB *blob)
324 if (tdr->flags & TDR_ALIGN2) {
325 blob->length = TDR_ALIGN(tdr, 2);
326 } else if (tdr->flags & TDR_ALIGN4) {
327 blob->length = TDR_ALIGN(tdr, 4);
328 } else if (tdr->flags & TDR_ALIGN8) {
329 blob->length = TDR_ALIGN(tdr, 8);
332 TDR_PUSH_NEED_BYTES(tdr, blob->length);
334 memcpy(tdr->data.data+tdr->offset, blob->data, blob->length);
339 pull a DATA_BLOB from the wire.
341 NTSTATUS tdr_pull_DATA_BLOB(struct tdr_pull *tdr, DATA_BLOB *blob)
345 if (tdr->flags & TDR_ALIGN2) {
346 length = TDR_ALIGN(tdr, 2);
347 } else if (tdr->flags & TDR_ALIGN4) {
348 length = TDR_ALIGN(tdr, 4);
349 } else if (tdr->flags & TDR_ALIGN8) {
350 length = TDR_ALIGN(tdr, 8);
351 } else if (tdr->flags & TDR_REMAINING) {
352 length = tdr->data.length - tdr->offset;
354 return NT_STATUS_INVALID_PARAMETER;
357 if (tdr->data.length - tdr->offset < length) {
358 length = tdr->data.length - tdr->offset;
361 TDR_PULL_NEED_BYTES(tdr, length);
363 *blob = data_blob_talloc(tdr, tdr->data.data+tdr->offset, length);
364 tdr->offset += length;