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_SVAL(tdr, ofs) (TDR_BE(tdr)?RSVAL(tdr->data.data,ofs):SVAL(tdr->data.data,ofs))
40 #define TDR_IVAL(tdr, ofs) (TDR_BE(tdr)?RIVAL(tdr->data.data,ofs):IVAL(tdr->data.data,ofs))
41 #define TDR_IVALS(tdr, ofs) (TDR_BE(tdr)?RIVALS(tdr->data.data,ofs):IVALS(tdr->data.data,ofs))
42 #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)
43 #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)
44 #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)
47 expand the available space in the buffer to 'size'
49 NTSTATUS tdr_push_expand(struct tdr_push *tdr, uint32_t size)
51 if (talloc_get_size(tdr->data.data) >= size) {
55 tdr->data.data = talloc_realloc(tdr, tdr->data.data, uint8_t, tdr->data.length + TDR_BASE_MARSHALL_SIZE);
56 return NT_STATUS_NO_MEMORY;
60 NTSTATUS tdr_pull_uint8(struct tdr_pull *tdr, uint8_t *v)
62 TDR_PULL_NEED_BYTES(tdr, 1);
63 SCVAL(tdr->data.data, tdr->offset, *v);
68 NTSTATUS tdr_push_uint8(struct tdr_push *tdr, const uint8_t *v)
70 TDR_PUSH_NEED_BYTES(tdr, 1);
71 SCVAL(tdr->data.data, tdr->offset, *v);
76 NTSTATUS tdr_print_uint8(struct tdr_print *tdr, const char *name, uint8_t *v)
78 tdr->print(tdr, "%-25s: 0x%02x (%u)", name, *v, *v);
82 NTSTATUS tdr_pull_uint16(struct tdr_pull *tdr, uint16_t *v)
84 TDR_PULL_NEED_BYTES(tdr, 2);
85 *v = TDR_SVAL(tdr, tdr->offset);
90 NTSTATUS tdr_push_uint16(struct tdr_push *tdr, const uint16_t *v)
92 TDR_PUSH_NEED_BYTES(tdr, 2);
93 TDR_SSVAL(tdr, tdr->offset, *v);
98 NTSTATUS tdr_print_uint16(struct tdr_print *tdr, const char *name, uint16_t *v)
100 tdr->print(tdr, "%-25s: 0x%02x (%u)", name, *v, *v);
104 NTSTATUS tdr_pull_uint32(struct tdr_pull *tdr, uint32_t *v)
106 TDR_PULL_NEED_BYTES(tdr, 4);
107 *v = TDR_IVAL(tdr, tdr->offset);
112 NTSTATUS tdr_push_uint32(struct tdr_push *tdr, const uint32_t *v)
114 TDR_PUSH_NEED_BYTES(tdr, 4);
115 TDR_SIVAL(tdr, tdr->offset, *v);
120 NTSTATUS tdr_print_uint32(struct tdr_print *tdr, const char *name, uint32_t *v)
122 tdr->print(tdr, "%-25s: 0x%02x (%u)", name, *v, *v);
126 NTSTATUS tdr_pull_charset(struct tdr_pull *tdr, const char **v, uint32_t length, uint32_t el_size, int chset)
133 length = ascii_len_n((const char*)tdr->data.data+tdr->offset, tdr->data.length-tdr->offset);
136 length = utf16_len_n(tdr->data.data+tdr->offset, tdr->data.length-tdr->offset);
140 return NT_STATUS_INVALID_PARAMETER;
144 TDR_PULL_NEED_BYTES(tdr, el_size*length);
146 ret = convert_string_talloc(tdr, chset, CH_UNIX, tdr->data.data+tdr->offset, el_size*length, discard_const_p(void *, v));
149 return NT_STATUS_INVALID_PARAMETER;
152 tdr->offset += length * el_size;
157 NTSTATUS tdr_push_charset(struct tdr_push *tdr, const char **v, uint32_t length, uint32_t el_size, int chset)
159 ssize_t ret, required;
161 required = el_size * length;
162 TDR_PUSH_NEED_BYTES(tdr, required);
164 ret = convert_string(CH_UNIX, chset, *v, strlen(*v), tdr->data.data+tdr->offset, required);
167 return NT_STATUS_INVALID_PARAMETER;
170 /* Make sure the remaining part of the string is filled with zeroes */
171 if (ret < required) {
172 memset(tdr->data.data+tdr->offset+ret, 0, required-ret);
175 tdr->offset += required;
180 NTSTATUS tdr_print_charset(struct tdr_print *tdr, const char *name, const char **v, uint32_t length, uint32_t el_size, int chset)
182 tdr->print(tdr, "%-25s: %s", name, *v);
189 NTSTATUS tdr_pull_ipv4address(struct tdr_pull *tdr, const char **address)
192 TDR_CHECK(tdr_pull_uint32(tdr, &in.addr));
193 in.addr = htonl(in.addr);
194 *address = talloc_strdup(tdr, sys_inet_ntoa(in));
195 NT_STATUS_HAVE_NO_MEMORY(*address);
202 NTSTATUS tdr_push_ipv4address(struct tdr_push *tdr, const char **address)
204 uint32_t addr = htonl(interpret_addr(*address));
205 TDR_CHECK(tdr_push_uint32(tdr, &addr));
212 NTSTATUS tdr_print_ipv4address(struct tdr_print *tdr, const char *name,
213 const char **address)
215 tdr->print(tdr, "%-25s: %s", name, *address);
222 NTSTATUS tdr_pull_hyper(struct tdr_pull *tdr, uint64_t *v)
224 TDR_PULL_NEED_BYTES(tdr, 8);
225 *v = TDR_IVAL(tdr, tdr->offset);
226 *v |= (uint64_t)(TDR_IVAL(tdr, tdr->offset+4)) << 32;
234 NTSTATUS tdr_push_hyper(struct tdr_push *tdr, uint64_t *v)
236 TDR_PUSH_NEED_BYTES(tdr, 8);
237 TDR_SIVAL(tdr, tdr->offset, ((*v) & 0xFFFFFFFF));
238 TDR_SIVAL(tdr, tdr->offset+4, ((*v)>>32));
248 NTSTATUS tdr_push_NTTIME(struct tdr_push *tdr, NTTIME *t)
250 TDR_CHECK(tdr_push_hyper(tdr, t));
257 NTSTATUS tdr_pull_NTTIME(struct tdr_pull *tdr, NTTIME *t)
259 TDR_CHECK(tdr_pull_hyper(tdr, t));
266 NTSTATUS tdr_push_time_t(struct tdr_push *tdr, time_t *t)
268 return tdr_push_uint32(tdr, (uint32_t *)t);
274 NTSTATUS tdr_pull_time_t(struct tdr_pull *tdr, time_t *t)
277 TDR_CHECK(tdr_pull_uint32(tdr, &tt));
282 NTSTATUS tdr_print_time_t(struct tdr_print *tdr, const char *name, time_t *t)
284 if (*t == (time_t)-1 || *t == 0) {
285 tdr->print(tdr, "%-25s: (time_t)%d", name, (int)*t);
287 tdr->print(tdr, "%-25s: %s", name, timestring(tdr, *t));
293 NTSTATUS tdr_print_NTTIME(struct tdr_print *tdr, const char *name, NTTIME *t)
295 tdr->print(tdr, "%-25s: %s", name, nt_time_string(tdr, *t));
300 NTSTATUS tdr_print_DATA_BLOB(struct tdr_print *tdr, const char *name, DATA_BLOB *r)
302 tdr->print(tdr, "%-25s: DATA_BLOB length=%u", name, r->length);
304 dump_data(10, r->data, r->length);
310 #define TDR_ALIGN(tdr,n) (((tdr)->offset & ((n)-1)) == 0?0:((n)-((tdr)->offset&((n)-1))))
313 push a DATA_BLOB onto the wire.
315 NTSTATUS tdr_push_DATA_BLOB(struct tdr_push *tdr, DATA_BLOB *blob)
317 if (tdr->flags & TDR_ALIGN2) {
318 blob->length = TDR_ALIGN(tdr, 2);
319 } else if (tdr->flags & TDR_ALIGN4) {
320 blob->length = TDR_ALIGN(tdr, 4);
321 } else if (tdr->flags & TDR_ALIGN8) {
322 blob->length = TDR_ALIGN(tdr, 8);
325 TDR_PUSH_NEED_BYTES(tdr, blob->length);
327 memcpy(tdr->data.data+tdr->offset, blob->data, blob->length);
332 pull a DATA_BLOB from the wire.
334 NTSTATUS tdr_pull_DATA_BLOB(struct tdr_pull *tdr, DATA_BLOB *blob)
338 if (tdr->flags & TDR_ALIGN2) {
339 length = TDR_ALIGN(tdr, 2);
340 } else if (tdr->flags & TDR_ALIGN4) {
341 length = TDR_ALIGN(tdr, 4);
342 } else if (tdr->flags & TDR_ALIGN8) {
343 length = TDR_ALIGN(tdr, 8);
344 } else if (tdr->flags & TDR_REMAINING) {
345 length = tdr->data.length - tdr->offset;
347 return NT_STATUS_INVALID_PARAMETER;
350 if (tdr->data.length - tdr->offset < length) {
351 length = tdr->data.length - tdr->offset;
354 TDR_PULL_NEED_BYTES(tdr, length);
356 *blob = data_blob_talloc(tdr, tdr->data.data+tdr->offset, length);
357 tdr->offset += length;