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s3/docs: Fix serveral typos.
[Samba.git] / source / librpc / ndr / ndr_string.c
blobe553443bd8ac247c807c2cfa4fd59ab50a4d948e
1 /*
2 Unix SMB/CIFS implementation.
3
4 routines for marshalling/unmarshalling string types
5
6 Copyright (C) Andrew Tridgell 2003
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
20 */
21
22 #include "includes.h"
23 #include "librpc/ndr/libndr.h"
24
25 /**
26 pull a general string from the wire
27 */
28 _PUBLIC_ enum ndr_err_code ndr_pull_string(struct ndr_pull *ndr, int ndr_flags, const char **s)
29 {
30 char *as=NULL;
31 uint32_t len1, ofs, len2;
32 uint16_t len3;
33 int ret;
34 int chset = CH_UTF16;
35 unsigned byte_mul = 2;
36 unsigned flags = ndr->flags;
37 unsigned c_len_term = 0;
38
39 if (!(ndr_flags & NDR_SCALARS)) {
40 return NDR_ERR_SUCCESS;
41 }
42
43 if (NDR_BE(ndr)) {
44 chset = CH_UTF16BE;
45 }
46
47 if (flags & LIBNDR_FLAG_STR_ASCII) {
48 chset = CH_DOS;
49 byte_mul = 1;
50 flags &= ~LIBNDR_FLAG_STR_ASCII;
51 }
52
53 if (flags & LIBNDR_FLAG_STR_UTF8) {
54 chset = CH_UTF8;
55 byte_mul = 1;
56 flags &= ~LIBNDR_FLAG_STR_UTF8;
57 }
58
59 flags &= ~LIBNDR_FLAG_STR_CONFORMANT;
60 if (flags & LIBNDR_FLAG_STR_CHARLEN) {
61 c_len_term = 1;
62 flags &= ~LIBNDR_FLAG_STR_CHARLEN;
63 }
64
65 switch (flags & LIBNDR_STRING_FLAGS) {
66 case LIBNDR_FLAG_STR_LEN4|LIBNDR_FLAG_STR_SIZE4:
67 case LIBNDR_FLAG_STR_LEN4|LIBNDR_FLAG_STR_SIZE4|LIBNDR_FLAG_STR_NOTERM:
68 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &len1));
69 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &ofs));
70 if (ofs != 0) {
71 return ndr_pull_error(ndr, NDR_ERR_STRING, "non-zero array offset with string flags 0x%x\n",
72 ndr->flags & LIBNDR_STRING_FLAGS);
73 }
74 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &len2));
75 if (len2 > len1) {
76 return ndr_pull_error(ndr, NDR_ERR_STRING,
77 "Bad string lengths len1=%u ofs=%u len2=%u\n",
78 len1, ofs, len2);
79 }
80 NDR_PULL_NEED_BYTES(ndr, (len2 + c_len_term)*byte_mul);
81 if (len2 == 0) {
82 as = talloc_strdup(ndr->current_mem_ctx, "");
83 } else {
84 ret = convert_string_talloc(ndr->current_mem_ctx,
85 chset, CH_UNIX,
86 ndr->data+ndr->offset,
87 (len2 + c_len_term)*byte_mul,
88 (void **)(void *)&as,
89 false);
90 if (ret == -1) {
91 return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
92 "Bad character conversion");
93 }
94 }
95 NDR_CHECK(ndr_pull_advance(ndr, (len2 + c_len_term)*byte_mul));
96
97 if (len1 != len2) {
98 DEBUG(6,("len1[%u] != len2[%u] '%s'\n", len1, len2, as));
99 }
100
101 /* this is a way of detecting if a string is sent with the wrong
102 termination */
103 if (ndr->flags & LIBNDR_FLAG_STR_NOTERM) {
104 if (strlen(as) < (len2 + c_len_term)) {
105 DEBUG(6,("short string '%s'\n", as));
106 }
107 } else {
108 if (strlen(as) == (len2 + c_len_term)) {
109 DEBUG(6,("long string '%s'\n", as));
110 }
111 }
112 *s = as;
113 break;
114
115 case LIBNDR_FLAG_STR_SIZE4:
116 case LIBNDR_FLAG_STR_SIZE4|LIBNDR_FLAG_STR_NOTERM:
117 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &len1));
118 NDR_PULL_NEED_BYTES(ndr, (len1 + c_len_term)*byte_mul);
119 if (len1 == 0) {
120 as = talloc_strdup(ndr->current_mem_ctx, "");
121 } else {
122 ret = convert_string_talloc(ndr->current_mem_ctx,
123 chset, CH_UNIX,
124 ndr->data+ndr->offset,
125 (len1 + c_len_term)*byte_mul,
126 (void **)(void *)&as,
127 false);
128 if (ret == -1) {
129 return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
130 "Bad character conversion");
131 }
132 }
133 NDR_CHECK(ndr_pull_advance(ndr, (len1 + c_len_term)*byte_mul));
134
135 /* this is a way of detecting if a string is sent with the wrong
136 termination */
137 if (ndr->flags & LIBNDR_FLAG_STR_NOTERM) {
138 if (strlen(as) < (len1 + c_len_term)) {
139 DEBUG(6,("short string '%s'\n", as));
140 }
141 } else {
142 if (strlen(as) == (len1 + c_len_term)) {
143 DEBUG(6,("long string '%s'\n", as));
144 }
145 }
146 *s = as;
147 break;
148
149 case LIBNDR_FLAG_STR_LEN4:
150 case LIBNDR_FLAG_STR_LEN4|LIBNDR_FLAG_STR_NOTERM:
151 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &ofs));
152 if (ofs != 0) {
153 return ndr_pull_error(ndr, NDR_ERR_STRING, "non-zero array offset with string flags 0x%x\n",
154 ndr->flags & LIBNDR_STRING_FLAGS);
155 }
156 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &len1));
157 NDR_PULL_NEED_BYTES(ndr, (len1 + c_len_term)*byte_mul);
158 if (len1 == 0) {
159 as = talloc_strdup(ndr->current_mem_ctx, "");
160 } else {
161 ret = convert_string_talloc(ndr->current_mem_ctx,
162 chset, CH_UNIX,
163 ndr->data+ndr->offset,
164 (len1 + c_len_term)*byte_mul,
165 (void **)(void *)&as,
166 false);
167 if (ret == -1) {
168 return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
169 "Bad character conversion");
170 }
171 }
172 NDR_CHECK(ndr_pull_advance(ndr, (len1 + c_len_term)*byte_mul));
173
174 /* this is a way of detecting if a string is sent with the wrong
175 termination */
176 if (ndr->flags & LIBNDR_FLAG_STR_NOTERM) {
177 if (strlen(as) < (len1 + c_len_term)) {
178 DEBUG(6,("short string '%s'\n", as));
179 }
180 } else {
181 if (strlen(as) == (len1 + c_len_term)) {
182 DEBUG(6,("long string '%s'\n", as));
183 }
184 }
185 *s = as;
186 break;
187
188
189 case LIBNDR_FLAG_STR_SIZE2:
190 case LIBNDR_FLAG_STR_SIZE2|LIBNDR_FLAG_STR_NOTERM:
191 NDR_CHECK(ndr_pull_uint16(ndr, NDR_SCALARS, &len3));
192 NDR_PULL_NEED_BYTES(ndr, (len3 + c_len_term)*byte_mul);
193 if (len3 == 0) {
194 as = talloc_strdup(ndr->current_mem_ctx, "");
195 } else {
196 ret = convert_string_talloc(ndr->current_mem_ctx,
197 chset, CH_UNIX,
198 ndr->data+ndr->offset,
199 (len3 + c_len_term)*byte_mul,
200 (void **)(void *)&as,
201 false);
202 if (ret == -1) {
203 return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
204 "Bad character conversion");
205 }
206 }
207 NDR_CHECK(ndr_pull_advance(ndr, (len3 + c_len_term)*byte_mul));
208
209 /* this is a way of detecting if a string is sent with the wrong
210 termination */
211 if (ndr->flags & LIBNDR_FLAG_STR_NOTERM) {
212 if (strlen(as) < (len3 + c_len_term)) {
213 DEBUG(6,("short string '%s'\n", as));
214 }
215 } else {
216 if (strlen(as) == (len3 + c_len_term)) {
217 DEBUG(6,("long string '%s'\n", as));
218 }
219 }
220 *s = as;
221 break;
222
223 case LIBNDR_FLAG_STR_SIZE2|LIBNDR_FLAG_STR_NOTERM|LIBNDR_FLAG_STR_BYTESIZE:
224 NDR_CHECK(ndr_pull_uint16(ndr, NDR_SCALARS, &len3));
225 NDR_PULL_NEED_BYTES(ndr, len3);
226 if (len3 == 0) {
227 as = talloc_strdup(ndr->current_mem_ctx, "");
228 } else {
229 ret = convert_string_talloc(ndr->current_mem_ctx,
230 chset, CH_UNIX,
231 ndr->data+ndr->offset,
232 len3,
233 (void **)(void *)&as,
234 false);
235 if (ret == -1) {
236 return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
237 "Bad character conversion");
238 }
239 }
240 NDR_CHECK(ndr_pull_advance(ndr, len3));
241 *s = as;
242 break;
243
244 case LIBNDR_FLAG_STR_NULLTERM:
245 if (byte_mul == 1) {
246 len1 = ascii_len_n((const char *)(ndr->data+ndr->offset), ndr->data_size - ndr->offset);
247 } else {
248 len1 = utf16_len_n(ndr->data+ndr->offset, ndr->data_size - ndr->offset);
249 }
250 ret = convert_string_talloc(ndr->current_mem_ctx,
251 chset, CH_UNIX,
252 ndr->data+ndr->offset,
253 len1,
254 (void **)(void *)&as,
255 false);
256 if (ret == -1) {
257 return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
258 "Bad character conversion");
259 }
260 NDR_CHECK(ndr_pull_advance(ndr, len1));
261 *s = as;
262 break;
263
264 case LIBNDR_FLAG_STR_FIXLEN15:
265 case LIBNDR_FLAG_STR_FIXLEN32:
266 len1 = (flags & LIBNDR_FLAG_STR_FIXLEN32)?32:15;
267 NDR_PULL_NEED_BYTES(ndr, len1*byte_mul);
268 ret = convert_string_talloc(ndr->current_mem_ctx,
269 chset, CH_UNIX,
270 ndr->data+ndr->offset,
271 len1*byte_mul,
272 (void **)(void *)&as,
273 false);
274 if (ret == -1) {
275 return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
276 "Bad character conversion");
277 }
278 NDR_CHECK(ndr_pull_advance(ndr, len1*byte_mul));
279 *s = as;
280 break;
281
282 case LIBNDR_FLAG_STR_NOTERM:
283 if (!(ndr->flags & LIBNDR_FLAG_REMAINING)) {
284 return ndr_pull_error(ndr, NDR_ERR_STRING, "Bad string flags 0x%x (missing NDR_REMAINING)\n",
285 ndr->flags & LIBNDR_STRING_FLAGS);
286 }
287
288 len1 = ndr->data_size - ndr->offset;
289
290 NDR_PULL_NEED_BYTES(ndr, len1);
291 if (len1 == 0) {
292 as = talloc_strdup(ndr->current_mem_ctx, "");
293 } else {
294 ret = convert_string_talloc(ndr->current_mem_ctx,
295 chset, CH_UNIX,
296 ndr->data+ndr->offset,
297 len1,
298 (void **)(void *)&as,
299 false);
300 if (ret == -1) {
301 return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
302 "Bad character conversion");
303 }
304 }
305 NDR_CHECK(ndr_pull_advance(ndr, len1));
306
307 *s = as;
308 break;
309
310 default:
311 return ndr_pull_error(ndr, NDR_ERR_STRING, "Bad string flags 0x%x\n",
312 ndr->flags & LIBNDR_STRING_FLAGS);
313 }
314
315 return NDR_ERR_SUCCESS;
316 }
317
318
319 /**
320 push a general string onto the wire
321 */
322 _PUBLIC_ enum ndr_err_code ndr_push_string(struct ndr_push *ndr, int ndr_flags, const char *s)
323 {
324 ssize_t s_len, c_len, d_len;
325 int chset = CH_UTF16;
326 unsigned flags = ndr->flags;
327 unsigned byte_mul = 2;
328 uint8_t *dest = NULL;
329
330 if (!(ndr_flags & NDR_SCALARS)) {
331 return NDR_ERR_SUCCESS;
332 }
333
334 if (NDR_BE(ndr)) {
335 chset = CH_UTF16BE;
336 }
337
338 s_len = s?strlen(s):0;
339
340 if (flags & LIBNDR_FLAG_STR_ASCII) {
341 chset = CH_DOS;
342 byte_mul = 1;
343 flags &= ~LIBNDR_FLAG_STR_ASCII;
344 }
345
346 if (flags & LIBNDR_FLAG_STR_UTF8) {
347 chset = CH_UTF8;
348 byte_mul = 1;
349 flags &= ~LIBNDR_FLAG_STR_UTF8;
350 }
351
352 flags &= ~LIBNDR_FLAG_STR_CONFORMANT;
353
354 if (!(flags &
355 (LIBNDR_FLAG_STR_NOTERM |
356 LIBNDR_FLAG_STR_FIXLEN15 |
357 LIBNDR_FLAG_STR_FIXLEN32))) {
358 s_len++;
359 }
360 d_len = convert_string_talloc(ndr, CH_UNIX, chset, s, s_len,
361 (void **)(void *)&dest, false);
362 if (d_len == -1) {
363 return ndr_push_error(ndr, NDR_ERR_CHARCNV,
364 "Bad character conversion");
365 }
366
367 if (flags & LIBNDR_FLAG_STR_BYTESIZE) {
368 c_len = d_len;
369 flags &= ~LIBNDR_FLAG_STR_BYTESIZE;
370 } else if (flags & LIBNDR_FLAG_STR_CHARLEN) {
371 c_len = (d_len / byte_mul)-1;
372 flags &= ~LIBNDR_FLAG_STR_CHARLEN;
373 } else {
374 c_len = d_len / byte_mul;
375 }
376
377 switch ((flags & LIBNDR_STRING_FLAGS) & ~LIBNDR_FLAG_STR_NOTERM) {
378 case LIBNDR_FLAG_STR_LEN4|LIBNDR_FLAG_STR_SIZE4:
379 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, c_len));
380 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, 0));
381 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, c_len));
382 NDR_CHECK(ndr_push_bytes(ndr, dest, d_len));
383 break;
384
385 case LIBNDR_FLAG_STR_LEN4:
386 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, 0));
387 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, c_len));
388 NDR_CHECK(ndr_push_bytes(ndr, dest, d_len));
389 break;
390
391 case LIBNDR_FLAG_STR_SIZE4:
392 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, c_len));
393 NDR_CHECK(ndr_push_bytes(ndr, dest, d_len));
394 break;
395
396 case LIBNDR_FLAG_STR_SIZE2:
397 NDR_CHECK(ndr_push_uint16(ndr, NDR_SCALARS, c_len));
398 NDR_CHECK(ndr_push_bytes(ndr, dest, d_len));
399 break;
400
401 case LIBNDR_FLAG_STR_NULLTERM:
402 NDR_CHECK(ndr_push_bytes(ndr, dest, d_len));
403 break;
404
405 case LIBNDR_FLAG_STR_FIXLEN15:
406 case LIBNDR_FLAG_STR_FIXLEN32: {
407 ssize_t fix_len = (flags & LIBNDR_FLAG_STR_FIXLEN32)?32:15;
408 uint32_t pad_len = fix_len - d_len;
409 if (d_len > fix_len) {
410 return ndr_push_error(ndr, NDR_ERR_CHARCNV,
411 "Bad character conversion");
412 }
413 NDR_CHECK(ndr_push_bytes(ndr, dest, d_len));
414 if (pad_len != 0) {
415 NDR_CHECK(ndr_push_zero(ndr, pad_len));
416 }
417 break;
418 }
419
420 default:
421 if (ndr->flags & LIBNDR_FLAG_REMAINING) {
422 NDR_CHECK(ndr_push_bytes(ndr, dest, d_len));
423 break;
424 }
425
426 return ndr_push_error(ndr, NDR_ERR_STRING, "Bad string flags 0x%x\n",
427 ndr->flags & LIBNDR_STRING_FLAGS);
428 }
429
430 talloc_free(dest);
431
432 return NDR_ERR_SUCCESS;
433 }
434
435 /**
436 push a general string onto the wire
437 */
438 _PUBLIC_ size_t ndr_string_array_size(struct ndr_push *ndr, const char *s)
439 {
440 size_t c_len;
441 unsigned flags = ndr->flags;
442 unsigned byte_mul = 2;
443 unsigned c_len_term = 1;
444
445 if (flags & LIBNDR_FLAG_STR_FIXLEN32) {
446 return 32;
447 }
448 if (flags & LIBNDR_FLAG_STR_FIXLEN15) {
449 return 15;
450 }
451
452 c_len = s?strlen_m(s):0;
453
454 if (flags & (LIBNDR_FLAG_STR_ASCII|LIBNDR_FLAG_STR_UTF8)) {
455 byte_mul = 1;
456 }
457
458 if (flags & LIBNDR_FLAG_STR_NOTERM) {
459 c_len_term = 0;
460 }
461
462 c_len = c_len + c_len_term;
463
464 if (flags & LIBNDR_FLAG_STR_BYTESIZE) {
465 c_len = c_len * byte_mul;
466 }
467
468 return c_len;
469 }
470
471 _PUBLIC_ void ndr_print_string(struct ndr_print *ndr, const char *name, const char *s)
472 {
473 if (s) {
474 ndr->print(ndr, "%-25s: '%s'", name, s);
475 } else {
476 ndr->print(ndr, "%-25s: NULL", name);
477 }
478 }
479
480 _PUBLIC_ uint32_t ndr_size_string(int ret, const char * const* string, int flags)
481 {
482 /* FIXME: Is this correct for all strings ? */
483 if(!(*string)) return ret;
484 return ret+strlen(*string)+1;
485 }
486
487 /**
488 pull a general string array from the wire
489 */
490 _PUBLIC_ enum ndr_err_code ndr_pull_string_array(struct ndr_pull *ndr, int ndr_flags, const char ***_a)
491 {
492 const char **a = *_a;
493 uint32_t count;
494 unsigned flags = ndr->flags;
495 unsigned saved_flags = ndr->flags;
496
497 if (!(ndr_flags & NDR_SCALARS)) {
498 return NDR_ERR_SUCCESS;
499 }
500
501 switch (flags & LIBNDR_STRING_FLAGS) {
502 case LIBNDR_FLAG_STR_NULLTERM:
503 /*
504 * here the strings are null terminated
505 * but also the array is null terminated
506 */
507 for (count = 0;; count++) {
508 TALLOC_CTX *tmp_ctx;
509 const char *s = NULL;
510 a = talloc_realloc(ndr->current_mem_ctx, a, const char *, count + 2);
511 NDR_ERR_HAVE_NO_MEMORY(a);
512 a[count] = NULL;
513 a[count+1] = NULL;
514
515 tmp_ctx = ndr->current_mem_ctx;
516 ndr->current_mem_ctx = a;
517 NDR_CHECK(ndr_pull_string(ndr, ndr_flags, &s));
518 ndr->current_mem_ctx = tmp_ctx;
519 if (strcmp("", s)==0) {
520 a[count] = NULL;
521 break;
522 } else {
523 a[count] = s;
524 }
525 }
526
527 *_a =a;
528 break;
529
530 case LIBNDR_FLAG_STR_NOTERM:
531 if (!(ndr->flags & LIBNDR_FLAG_REMAINING)) {
532 return ndr_pull_error(ndr, NDR_ERR_STRING, "Bad string flags 0x%x (missing NDR_REMAINING)\n",
533 ndr->flags & LIBNDR_STRING_FLAGS);
534 }
535 /*
536 * here the strings are not null terminated
537 * but serarated by a null terminator
538 *
539 * which means the same as:
540 * very string is null terminated exept the last
541 * string is terminated by the end of the buffer
542 *
543 * as LIBNDR_FLAG_STR_NULLTERM also end at the end
544 * of the buffer, we can pull each string with this flag
545 */
546 ndr->flags &= ~(LIBNDR_FLAG_STR_NOTERM|LIBNDR_FLAG_REMAINING);
547 ndr->flags |= LIBNDR_FLAG_STR_NULLTERM;
548
549 for (count = 0; ((ndr->data_size - ndr->offset) > 0); count++) {
550 TALLOC_CTX *tmp_ctx;
551 const char *s = NULL;
552 a = talloc_realloc(ndr->current_mem_ctx, a, const char *, count + 2);
553 NDR_ERR_HAVE_NO_MEMORY(a);
554 a[count] = NULL;
555 a[count+1] = NULL;
556
557 tmp_ctx = ndr->current_mem_ctx;
558 ndr->current_mem_ctx = a;
559 NDR_CHECK(ndr_pull_string(ndr, ndr_flags, &s));
560 ndr->current_mem_ctx = tmp_ctx;
561 a[count] = s;
562 }
563
564 *_a =a;
565 break;
566
567 default:
568 return ndr_pull_error(ndr, NDR_ERR_STRING, "Bad string flags 0x%x\n",
569 ndr->flags & LIBNDR_STRING_FLAGS);
570 }
571
572 ndr->flags = saved_flags;
573 return NDR_ERR_SUCCESS;
574 }
575
576 /**
577 push a general string array onto the wire
578 */
579 _PUBLIC_ enum ndr_err_code ndr_push_string_array(struct ndr_push *ndr, int ndr_flags, const char **a)
580 {
581 uint32_t count;
582 unsigned flags = ndr->flags;
583 unsigned saved_flags = ndr->flags;
584
585 if (!(ndr_flags & NDR_SCALARS)) {
586 return NDR_ERR_SUCCESS;
587 }
588
589 switch (flags & LIBNDR_STRING_FLAGS) {
590 case LIBNDR_FLAG_STR_NULLTERM:
591 for (count = 0; a && a[count]; count++) {
592 NDR_CHECK(ndr_push_string(ndr, ndr_flags, a[count]));
593 }
594
595 NDR_CHECK(ndr_push_string(ndr, ndr_flags, ""));
596 break;
597
598 case LIBNDR_FLAG_STR_NOTERM:
599 if (!(ndr->flags & LIBNDR_FLAG_REMAINING)) {
600 return ndr_push_error(ndr, NDR_ERR_STRING, "Bad string flags 0x%x (missing NDR_REMAINING)\n",
601 ndr->flags & LIBNDR_STRING_FLAGS);
602 }
603
604 for (count = 0; a && a[count]; count++) {
605 if (count > 0) {
606 ndr->flags &= ~(LIBNDR_FLAG_STR_NOTERM|LIBNDR_FLAG_REMAINING);
607 ndr->flags |= LIBNDR_FLAG_STR_NULLTERM;
608 NDR_CHECK(ndr_push_string(ndr, ndr_flags, ""));
609 ndr->flags = saved_flags;
610 }
611 NDR_CHECK(ndr_push_string(ndr, ndr_flags, a[count]));
612 }
613
614 break;
615
616 default:
617 return ndr_push_error(ndr, NDR_ERR_STRING, "Bad string flags 0x%x\n",
618 ndr->flags & LIBNDR_STRING_FLAGS);
619 }
620
621 ndr->flags = saved_flags;
622 return NDR_ERR_SUCCESS;
623 }
624
625 _PUBLIC_ void ndr_print_string_array(struct ndr_print *ndr, const char *name, const char **a)
626 {
627 uint32_t count;
628 uint32_t i;
629
630 for (count = 0; a && a[count]; count++) {}
631
632 ndr->print(ndr, "%s: ARRAY(%d)", name, count);
633 ndr->depth++;
634 for (i=0;i<count;i++) {
635 char *idx=NULL;
636 if (asprintf(&idx, "[%d]", i) != -1) {
637 ndr_print_string(ndr, idx, a[i]);
638 free(idx);
639 }
640 }
641 ndr->depth--;
642 }
643
644 /**
645 * Return number of elements in a string including the last (zeroed) element
646 */
647 _PUBLIC_ uint32_t ndr_string_length(const void *_var, uint32_t element_size)
648 {
649 uint32_t i;
650 uint8_t zero[4] = {0,0,0,0};
651 const char *var = (const char *)_var;
652
653 for (i = 0; memcmp(var+i*element_size,zero,element_size) != 0; i++);
654
655 return i+1;
656 }
657
658 _PUBLIC_ enum ndr_err_code ndr_check_string_terminator(struct ndr_pull *ndr, uint32_t count, uint32_t element_size)
659 {
660 uint32_t i;
661 struct ndr_pull_save save_offset;
662
663 ndr_pull_save(ndr, &save_offset);
664 ndr_pull_advance(ndr, (count - 1) * element_size);
665 NDR_PULL_NEED_BYTES(ndr, element_size);
666
667 for (i = 0; i < element_size; i++) {
668 if (ndr->data[ndr->offset+i] != 0) {
669 ndr_pull_restore(ndr, &save_offset);
670
671 return ndr_pull_error(ndr, NDR_ERR_ARRAY_SIZE, "String terminator not present or outside string boundaries");
672 }
673 }
674
675 ndr_pull_restore(ndr, &save_offset);
676
677 return NDR_ERR_SUCCESS;
678 }
679
680 _PUBLIC_ enum ndr_err_code ndr_pull_charset(struct ndr_pull *ndr, int ndr_flags, const char **var, uint32_t length, uint8_t byte_mul, charset_t chset)
681 {
682 int ret;
683 if (length == 0) {
684 *var = talloc_strdup(ndr->current_mem_ctx, "");
685 return NDR_ERR_SUCCESS;
686 }
687
688 if (NDR_BE(ndr) && chset == CH_UTF16) {
689 chset = CH_UTF16BE;
690 }
691
692 NDR_PULL_NEED_BYTES(ndr, length*byte_mul);
693
694 ret = convert_string_talloc(ndr->current_mem_ctx,
695 chset, CH_UNIX,
696 ndr->data+ndr->offset,
697 length*byte_mul,
698 discard_const_p(void *, var), false);
699 if (ret == -1) {
700 return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
701 "Bad character conversion");
702 }
703 NDR_CHECK(ndr_pull_advance(ndr, length*byte_mul));
704
705 return NDR_ERR_SUCCESS;
706 }
707
708 _PUBLIC_ enum ndr_err_code ndr_push_charset(struct ndr_push *ndr, int ndr_flags, const char *var, uint32_t length, uint8_t byte_mul, charset_t chset)
709 {
710 ssize_t ret, required;
711
712 if (NDR_BE(ndr) && chset == CH_UTF16) {
713 chset = CH_UTF16BE;
714 }
715
716 required = byte_mul * length;
717
718 NDR_PUSH_NEED_BYTES(ndr, required);
719 ret = convert_string(CH_UNIX, chset,
720 var, strlen(var),
721 ndr->data+ndr->offset, required, false);
722 if (ret == -1) {
723 return ndr_push_error(ndr, NDR_ERR_CHARCNV,
724 "Bad character conversion");
725 }
726
727 /* Make sure the remaining part of the string is filled with zeroes */
728 if (ret < required) {
729 memset(ndr->data+ndr->offset+ret, 0, required-ret);
730 }
731
732 ndr->offset += required;
733
734 return NDR_ERR_SUCCESS;
735 }
736
737 /* Return number of elements in a string in the specified charset */
738 _PUBLIC_ uint32_t ndr_charset_length(const void *var, charset_t chset)
739 {
740 /* FIXME: Treat special chars special here, taking chset into account */
741 /* Also include 0 byte */
742 return strlen((const char *)var)+1;
743 }
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