clang -cc1 -cc1 -triple amd64-unknown-openbsd7.4 -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name ber.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 1 -pic-is-pie -mframe-pointer=all -relaxed-aliasing -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/lib/libutil/obj -resource-dir /usr/local/llvm16/lib/clang/16 -internal-isystem /usr/local/llvm16/lib/clang/16/include -internal-externc-isystem /usr/include -O2 -fdebug-compilation-dir=/usr/src/lib/libutil/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fcf-protection=branch -fno-jump-tables -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /home/ben/Projects/scan/2024-01-11-140451-98009-1 -x c /usr/src/lib/libutil/ber.c
1 | |
2 | |
3 | |
4 | |
5 | |
6 | |
7 | |
8 | |
9 | |
10 | |
11 | |
12 | |
13 | |
14 | |
15 | |
16 | |
17 | |
18 | |
19 | |
20 | |
21 | #include <sys/types.h> |
22 | |
23 | #include <errno.h> |
24 | #include <limits.h> |
25 | #include <stdlib.h> |
26 | #include <err.h> /* XXX for debug output */ |
27 | #include <stdio.h> /* XXX for debug output */ |
28 | #include <string.h> |
29 | #include <unistd.h> |
30 | #include <stdarg.h> |
31 | |
32 | #include "ber.h" |
33 | |
34 | #define BER_TYPE_CONSTRUCTED 0x20 /* otherwise primitive */ |
35 | #define BER_TYPE_SINGLE_MAX 30 |
36 | #define BER_TAG_MASK 0x1f |
37 | #define BER_TAG_MORE 0x80 /* more subsequent octets */ |
38 | #define BER_TAG_TYPE_MASK 0x7f |
39 | #define BER_CLASS_SHIFT 6 |
40 | |
41 | static int ober_dump_element(struct ber *ber, struct ber_element *root); |
42 | static void ober_dump_header(struct ber *ber, struct ber_element *root); |
43 | static void ober_putc(struct ber *ber, u_char c); |
44 | static void ober_write(struct ber *ber, void *buf, size_t len); |
45 | static ssize_t get_id(struct ber *b, unsigned int *tag, int *class, |
46 | int *cstruct); |
47 | static ssize_t get_len(struct ber *b, ssize_t *len); |
48 | static ssize_t ober_read_element(struct ber *ber, struct ber_element *elm); |
49 | static ssize_t ober_getc(struct ber *b, u_char *c); |
50 | static ssize_t ober_read(struct ber *ber, void *buf, size_t len); |
51 | |
52 | #ifdef DEBUG |
53 | #define DPRINTF(...) printf(__VA_ARGS__) |
54 | #else |
55 | #define DPRINTF(...) do { } while (0) |
56 | #endif |
57 | |
58 | struct ber_element * |
59 | ober_get_element(unsigned int encoding) |
60 | { |
61 | struct ber_element *elm; |
62 | |
63 | if ((elm = calloc(1, sizeof(*elm))) == NULL) |
64 | return NULL; |
65 | |
66 | elm->be_encoding = encoding; |
67 | ober_set_header(elm, BER_CLASS_UNIVERSAL, BER_TYPE_DEFAULT); |
68 | |
69 | return elm; |
70 | } |
71 | |
72 | void |
73 | ober_set_header(struct ber_element *elm, int class, unsigned int type) |
74 | { |
75 | elm->be_class = class & BER_CLASS_MASK; |
| 14 | | Access to field 'be_class' results in a dereference of a null pointer (loaded from variable 'elm') |
|
76 | if (type == BER_TYPE_DEFAULT) |
77 | type = elm->be_encoding; |
78 | elm->be_type = type; |
79 | } |
80 | |
81 | void |
82 | ober_link_elements(struct ber_element *prev, struct ber_element *elm) |
83 | { |
84 | if (prev != NULL) { |
85 | if ((prev->be_encoding == BER_TYPE_SEQUENCE || |
86 | prev->be_encoding == BER_TYPE_SET) && |
87 | prev->be_sub == NULL) |
88 | prev->be_sub = elm; |
89 | else |
90 | prev->be_next = elm; |
91 | } |
92 | } |
93 | |
94 | struct ber_element * |
95 | ober_unlink_elements(struct ber_element *prev) |
96 | { |
97 | struct ber_element *elm; |
98 | |
99 | if ((prev->be_encoding == BER_TYPE_SEQUENCE || |
100 | prev->be_encoding == BER_TYPE_SET) && |
101 | prev->be_sub != NULL) { |
102 | elm = prev->be_sub; |
103 | prev->be_sub = NULL; |
104 | } else { |
105 | elm = prev->be_next; |
106 | prev->be_next = NULL; |
107 | } |
108 | |
109 | return (elm); |
110 | } |
111 | |
112 | void |
113 | ober_replace_elements(struct ber_element *prev, struct ber_element *new) |
114 | { |
115 | struct ber_element *ber, *next; |
116 | |
117 | ber = ober_unlink_elements(prev); |
118 | next = ober_unlink_elements(ber); |
119 | ober_link_elements(new, next); |
120 | ober_link_elements(prev, new); |
121 | |
122 | |
123 | ober_free_elements(ber); |
124 | } |
125 | |
126 | struct ber_element * |
127 | ober_add_sequence(struct ber_element *prev) |
128 | { |
129 | struct ber_element *elm; |
130 | |
131 | if ((elm = ober_get_element(BER_TYPE_SEQUENCE)) == NULL) |
132 | return NULL; |
133 | |
134 | ober_link_elements(prev, elm); |
135 | |
136 | return elm; |
137 | } |
138 | |
139 | struct ber_element * |
140 | ober_add_set(struct ber_element *prev) |
141 | { |
142 | struct ber_element *elm; |
143 | |
144 | if ((elm = ober_get_element(BER_TYPE_SET)) == NULL) |
145 | return NULL; |
146 | |
147 | ober_link_elements(prev, elm); |
148 | |
149 | return elm; |
150 | } |
151 | |
152 | struct ber_element * |
153 | ober_add_enumerated(struct ber_element *prev, long long val) |
154 | { |
155 | struct ber_element *elm; |
156 | u_int i, len = 0; |
157 | u_char cur, last = 0; |
158 | |
159 | if ((elm = ober_get_element(BER_TYPE_ENUMERATED)) == NULL) |
160 | return NULL; |
161 | |
162 | elm->be_numeric = val; |
163 | |
164 | for (i = 0; i < sizeof(long long); i++) { |
165 | cur = val & 0xff; |
166 | if (cur != 0 && cur != 0xff) |
167 | len = i; |
168 | if ((cur == 0 && last & 0x80) || |
169 | (cur == 0xff && (last & 0x80) == 0)) |
170 | len = i; |
171 | val >>= 8; |
172 | last = cur; |
173 | } |
174 | elm->be_len = len + 1; |
175 | |
176 | ober_link_elements(prev, elm); |
177 | |
178 | return elm; |
179 | } |
180 | |
181 | struct ber_element * |
182 | ober_add_integer(struct ber_element *prev, long long val) |
183 | { |
184 | struct ber_element *elm; |
185 | u_int i, len = 0; |
186 | u_char cur, last = 0; |
187 | |
188 | if ((elm = ober_get_element(BER_TYPE_INTEGER)) == NULL) |
189 | return NULL; |
190 | |
191 | elm->be_numeric = val; |
192 | |
193 | for (i = 0; i < sizeof(long long); i++) { |
194 | cur = val & 0xff; |
195 | if (cur != 0 && cur != 0xff) |
196 | len = i; |
197 | if ((cur == 0 && last & 0x80) || |
198 | (cur == 0xff && (last & 0x80) == 0)) |
199 | len = i; |
200 | val >>= 8; |
201 | last = cur; |
202 | } |
203 | elm->be_len = len + 1; |
204 | |
205 | ober_link_elements(prev, elm); |
206 | |
207 | return elm; |
208 | } |
209 | |
210 | int |
211 | ober_get_integer(struct ber_element *elm, long long *n) |
212 | { |
213 | if (elm->be_encoding != BER_TYPE_INTEGER) |
214 | return -1; |
215 | |
216 | if (n != NULL) |
217 | *n = elm->be_numeric; |
218 | return 0; |
219 | } |
220 | |
221 | int |
222 | ober_get_enumerated(struct ber_element *elm, long long *n) |
223 | { |
224 | if (elm->be_encoding != BER_TYPE_ENUMERATED) |
225 | return -1; |
226 | |
227 | if (n != NULL) |
228 | *n = elm->be_numeric; |
229 | return 0; |
230 | } |
231 | |
232 | struct ber_element * |
233 | ober_add_boolean(struct ber_element *prev, int bool) |
234 | { |
235 | struct ber_element *elm; |
236 | |
237 | if ((elm = ober_get_element(BER_TYPE_BOOLEAN)) == NULL) |
238 | return NULL; |
239 | |
240 | elm->be_numeric = bool ? 0xff : 0; |
241 | elm->be_len = 1; |
242 | |
243 | ober_link_elements(prev, elm); |
244 | |
245 | return elm; |
246 | } |
247 | |
248 | int |
249 | ober_get_boolean(struct ber_element *elm, int *b) |
250 | { |
251 | if (elm->be_encoding != BER_TYPE_BOOLEAN) |
252 | return -1; |
253 | |
254 | if (b != NULL) |
255 | *b = !(elm->be_numeric == 0); |
256 | return 0; |
257 | } |
258 | |
259 | struct ber_element * |
260 | ober_add_string(struct ber_element *prev, const char *string) |
261 | { |
262 | return ober_add_nstring(prev, string, strlen(string)); |
263 | } |
264 | |
265 | struct ber_element * |
266 | ober_add_nstring(struct ber_element *prev, const char *string0, size_t len) |
267 | { |
268 | struct ber_element *elm; |
269 | char *string; |
270 | |
271 | if ((string = calloc(1, len + 1)) == NULL) |
272 | return NULL; |
273 | if ((elm = ober_get_element(BER_TYPE_OCTETSTRING)) == NULL) { |
274 | free(string); |
275 | return NULL; |
276 | } |
277 | |
278 | bcopy(string0, string, len); |
279 | elm->be_val = string; |
280 | elm->be_len = len; |
281 | elm->be_free = 1; |
282 | |
283 | ober_link_elements(prev, elm); |
284 | |
285 | return elm; |
286 | } |
287 | |
288 | struct ber_element * |
289 | ober_add_ostring(struct ber_element *prev, struct ber_octetstring *s) |
290 | { |
291 | return ober_add_nstring(prev, s->ostr_val, s->ostr_len); |
292 | } |
293 | |
294 | int |
295 | ober_get_string(struct ber_element *elm, char **s) |
296 | { |
297 | if (elm->be_encoding != BER_TYPE_OCTETSTRING) |
298 | return -1; |
299 | |
300 | #if 0 |
301 | if (memchr(elm->be_val, '\0', elm->be_len) != NULL) |
302 | return -1; |
303 | #endif |
304 | |
305 | if (s != NULL) |
306 | *s = elm->be_val; |
307 | return 0; |
308 | } |
309 | |
310 | int |
311 | ober_get_nstring(struct ber_element *elm, void **p, size_t *len) |
312 | { |
313 | if (elm->be_encoding != BER_TYPE_OCTETSTRING) |
314 | return -1; |
315 | |
316 | if (len != NULL) |
317 | *len = elm->be_len; |
318 | if (p != NULL) { |
319 | if (len != NULL) |
320 | *p = elm->be_val; |
321 | else |
322 | *p = NULL; |
323 | } |
324 | return 0; |
325 | } |
326 | |
327 | int |
328 | ober_get_ostring(struct ber_element *elm, struct ber_octetstring *s) |
329 | { |
330 | if (elm->be_encoding != BER_TYPE_OCTETSTRING) |
331 | return -1; |
332 | |
333 | if (s != NULL) { |
334 | s->ostr_val = elm->be_val; |
335 | s->ostr_len = elm->be_len; |
336 | } |
337 | return 0; |
338 | } |
339 | |
340 | struct ber_element * |
341 | ober_add_bitstring(struct ber_element *prev, const void *v0, size_t len) |
342 | { |
343 | struct ber_element *elm; |
344 | void *v; |
345 | |
346 | if ((v = calloc(1, len)) == NULL) |
347 | return NULL; |
348 | if ((elm = ober_get_element(BER_TYPE_BITSTRING)) == NULL) { |
349 | free(v); |
350 | return NULL; |
351 | } |
352 | |
353 | bcopy(v0, v, len); |
354 | elm->be_val = v; |
355 | elm->be_len = len; |
356 | elm->be_free = 1; |
357 | |
358 | ober_link_elements(prev, elm); |
359 | |
360 | return elm; |
361 | } |
362 | |
363 | int |
364 | ober_get_bitstring(struct ber_element *elm, void **v, size_t *len) |
365 | { |
366 | if (elm->be_encoding != BER_TYPE_BITSTRING) |
367 | return -1; |
368 | |
369 | if (len != NULL) |
370 | *len = elm->be_len; |
371 | if (v != NULL) { |
372 | if (len != NULL) |
373 | *v = elm->be_val; |
374 | else |
375 | *v = NULL; |
376 | } |
377 | return 0; |
378 | } |
379 | |
380 | struct ber_element * |
381 | ober_add_null(struct ber_element *prev) |
382 | { |
383 | struct ber_element *elm; |
384 | |
385 | if ((elm = ober_get_element(BER_TYPE_NULL)) == NULL) |
386 | return NULL; |
387 | |
388 | ober_link_elements(prev, elm); |
389 | |
390 | return elm; |
391 | } |
392 | |
393 | int |
394 | ober_get_null(struct ber_element *elm) |
395 | { |
396 | if (elm->be_encoding != BER_TYPE_NULL) |
397 | return -1; |
398 | |
399 | return 0; |
400 | } |
401 | |
402 | struct ber_element * |
403 | ober_add_eoc(struct ber_element *prev) |
404 | { |
405 | struct ber_element *elm; |
406 | |
407 | if ((elm = ober_get_element(BER_TYPE_EOC)) == NULL) |
408 | return NULL; |
409 | |
410 | ober_link_elements(prev, elm); |
411 | |
412 | return elm; |
413 | } |
414 | |
415 | int |
416 | ober_get_eoc(struct ber_element *elm) |
417 | { |
418 | if (elm->be_encoding != BER_TYPE_EOC) |
419 | return -1; |
420 | |
421 | return 0; |
422 | } |
423 | |
424 | size_t |
425 | ober_oid2ber(struct ber_oid *o, u_int8_t *buf, size_t len) |
426 | { |
427 | u_int32_t v; |
428 | u_int i, j = 0, k; |
429 | |
430 | if (o->bo_n < BER_MIN_OID_LEN || o->bo_n > BER_MAX_OID_LEN || |
431 | o->bo_id[0] > 2 || o->bo_id[1] > 40) |
432 | return (0); |
433 | |
434 | v = (o->bo_id[0] * 40) + o->bo_id[1]; |
435 | for (i = 2, j = 0; i <= o->bo_n; v = o->bo_id[i], i++) { |
436 | for (k = 28; k >= 7; k -= 7) { |
437 | if (v >= (u_int)(1 << k)) { |
438 | if (len) |
439 | buf[j] = v >> k | BER_TAG_MORE; |
440 | j++; |
441 | } |
442 | } |
443 | if (len) |
444 | buf[j] = v & BER_TAG_TYPE_MASK; |
445 | j++; |
446 | } |
447 | |
448 | return (j); |
449 | } |
450 | |
451 | int |
452 | ober_string2oid(const char *oidstr, struct ber_oid *o) |
453 | { |
454 | char *sp, *p, str[BUFSIZ]; |
455 | const char *errstr; |
456 | |
457 | if (strlcpy(str, oidstr, sizeof(str)) >= sizeof(str)) |
458 | return (-1); |
459 | memset(o, 0, sizeof(*o)); |
460 | |
461 | |
462 | for (p = sp = str; p != NULL; sp = p) { |
463 | if ((p = strpbrk(p, "._-")) != NULL) |
464 | *p++ = '\0'; |
465 | o->bo_id[o->bo_n++] = strtonum(sp, 0, UINT_MAX, &errstr); |
466 | if (errstr || o->bo_n > BER_MAX_OID_LEN) |
467 | return (-1); |
468 | } |
469 | |
470 | return (0); |
471 | } |
472 | |
473 | int |
474 | ober_oid_cmp(struct ber_oid *a, struct ber_oid *b) |
475 | { |
476 | size_t i, min; |
477 | |
478 | min = a->bo_n < b->bo_n ? a->bo_n : b->bo_n; |
479 | for (i = 0; i < min; i++) { |
480 | if (a->bo_id[i] < b->bo_id[i]) |
481 | return (-1); |
482 | if (a->bo_id[i] > b->bo_id[i]) |
483 | return (1); |
484 | } |
485 | |
486 | if (a->bo_n < b->bo_n) |
487 | return (-2); |
488 | |
489 | if (a->bo_n > b->bo_n) |
490 | return 2; |
491 | return (0); |
492 | } |
493 | |
494 | struct ber_element * |
495 | ober_add_oid(struct ber_element *prev, struct ber_oid *o) |
496 | { |
497 | struct ber_element *elm; |
498 | u_int8_t *buf; |
499 | size_t len; |
500 | |
501 | if ((elm = ober_get_element(BER_TYPE_OBJECT)) == NULL) |
502 | return (NULL); |
503 | |
504 | if ((len = ober_oid2ber(o, NULL, 0)) == 0) |
505 | goto fail; |
506 | |
507 | if ((buf = calloc(1, len)) == NULL) |
508 | goto fail; |
509 | |
510 | elm->be_val = buf; |
511 | elm->be_len = len; |
512 | elm->be_free = 1; |
513 | |
514 | if (ober_oid2ber(o, buf, len) != len) |
515 | goto fail; |
516 | |
517 | ober_link_elements(prev, elm); |
518 | |
519 | return (elm); |
520 | |
521 | fail: |
522 | ober_free_elements(elm); |
523 | return (NULL); |
524 | } |
525 | |
526 | struct ber_element * |
527 | ober_add_noid(struct ber_element *prev, struct ber_oid *o, int n) |
528 | { |
529 | struct ber_oid no; |
530 | |
531 | if (n > BER_MAX_OID_LEN) |
532 | return (NULL); |
533 | no.bo_n = n; |
534 | bcopy(&o->bo_id, &no.bo_id, sizeof(no.bo_id)); |
535 | |
536 | return (ober_add_oid(prev, &no)); |
537 | } |
538 | |
539 | struct ber_element * |
540 | ober_add_oidstring(struct ber_element *prev, const char *oidstr) |
541 | { |
542 | struct ber_oid o; |
543 | |
544 | if (ober_string2oid(oidstr, &o) == -1) |
545 | return (NULL); |
546 | |
547 | return (ober_add_oid(prev, &o)); |
548 | } |
549 | |
550 | int |
551 | ober_get_oid(struct ber_element *elm, struct ber_oid *o) |
552 | { |
553 | u_int8_t *buf; |
554 | size_t len, i = 0, j = 0; |
555 | |
556 | if (elm->be_encoding != BER_TYPE_OBJECT) |
557 | return (-1); |
558 | |
559 | if (o == NULL) |
560 | return 0; |
561 | |
562 | buf = elm->be_val; |
563 | len = elm->be_len; |
564 | |
565 | memset(o, 0, sizeof(*o)); |
566 | o->bo_id[j++] = buf[i] / 40; |
567 | o->bo_id[j++] = buf[i++] % 40; |
568 | for (; i < len && j < BER_MAX_OID_LEN; i++) { |
569 | o->bo_id[j] = (o->bo_id[j] << 7) + (buf[i] & ~0x80); |
570 | if (buf[i] & 0x80) |
571 | continue; |
572 | j++; |
573 | } |
574 | o->bo_n = j; |
575 | |
576 | return (0); |
577 | } |
578 | |
579 | #define _MAX_SEQ 128 |
580 | struct ber_element * |
581 | ober_printf_elements(struct ber_element *ber, char *fmt, ...) |
582 | { |
583 | va_list ap; |
584 | int d, class, level = 0; |
585 | size_t len; |
586 | unsigned int type; |
587 | long long i; |
588 | char *s; |
589 | void *p; |
590 | struct ber_oid *o; |
591 | struct ber_element *parent[_MAX_SEQ], *e; |
592 | struct ber_element *origber = ber, *firstber = NULL; |
593 | |
594 | memset(parent, 0, sizeof(struct ber_element *) * _MAX_SEQ); |
595 | |
596 | va_start(ap, fmt); |
597 | |
598 | while (*fmt) { |
| 1 | Loop condition is true. Entering loop body | |
|
| 5 | | Loop condition is true. Entering loop body | |
|
| 10 | | Loop condition is true. Entering loop body | |
|
599 | switch (*fmt++) { |
| 2 | | Control jumps to the 'default' case at line 685 | |
|
| 6 | | Control jumps to the 'default' case at line 685 | |
|
| 11 | | Control jumps to 'case 116:' at line 645 | |
|
600 | case 'B': |
601 | p = va_arg(ap, void *); |
602 | len = va_arg(ap, size_t); |
603 | if ((ber = ober_add_bitstring(ber, p, len)) == NULL) |
604 | goto fail; |
605 | break; |
606 | case 'b': |
607 | d = va_arg(ap, int); |
608 | if ((ber = ober_add_boolean(ber, d)) == NULL) |
609 | goto fail; |
610 | break; |
611 | case 'd': |
612 | d = va_arg(ap, int); |
613 | if ((ber = ober_add_integer(ber, d)) == NULL) |
614 | goto fail; |
615 | break; |
616 | case 'e': |
617 | e = va_arg(ap, struct ber_element *); |
618 | ober_link_elements(ber, e); |
619 | break; |
620 | case 'E': |
621 | i = va_arg(ap, long long); |
622 | if ((ber = ober_add_enumerated(ber, i)) == NULL) |
623 | goto fail; |
624 | break; |
625 | case 'i': |
626 | i = va_arg(ap, long long); |
627 | if ((ber = ober_add_integer(ber, i)) == NULL) |
628 | goto fail; |
629 | break; |
630 | case 'O': |
631 | o = va_arg(ap, struct ber_oid *); |
632 | if ((ber = ober_add_oid(ber, o)) == NULL) |
633 | goto fail; |
634 | break; |
635 | case 'o': |
636 | s = va_arg(ap, char *); |
637 | if ((ber = ober_add_oidstring(ber, s)) == NULL) |
638 | goto fail; |
639 | break; |
640 | case 's': |
641 | s = va_arg(ap, char *); |
642 | if ((ber = ober_add_string(ber, s)) == NULL) |
643 | goto fail; |
644 | break; |
645 | case 't': |
646 | class = va_arg(ap, int); |
647 | type = va_arg(ap, unsigned int); |
648 | ober_set_header(ber, class, type); |
| 12 | | Passing null pointer value via 1st parameter 'elm' | |
|
| 13 | | Calling 'ober_set_header' | |
|
649 | break; |
650 | case 'x': |
651 | s = va_arg(ap, char *); |
652 | len = va_arg(ap, size_t); |
653 | if ((ber = ober_add_nstring(ber, s, len)) == NULL) |
654 | goto fail; |
655 | break; |
656 | case '0': |
657 | if ((ber = ober_add_null(ber)) == NULL) |
658 | goto fail; |
659 | break; |
660 | case '{': |
661 | if (level >= _MAX_SEQ-1) |
662 | goto fail; |
663 | if ((ber= ober_add_sequence(ber)) == NULL) |
664 | goto fail; |
665 | parent[level++] = ber; |
666 | break; |
667 | case '(': |
668 | if (level >= _MAX_SEQ-1) |
669 | goto fail; |
670 | if ((ber = ober_add_set(ber)) == NULL) |
671 | goto fail; |
672 | parent[level++] = ber; |
673 | break; |
674 | case '}': |
675 | case ')': |
676 | if (level <= 0 || parent[level - 1] == NULL) |
677 | goto fail; |
678 | ber = parent[--level]; |
679 | break; |
680 | case '.': |
681 | if ((e = ober_add_eoc(ber)) == NULL) |
682 | goto fail; |
683 | ber = e; |
684 | break; |
685 | default: |
686 | break; |
687 | } |
688 | if (firstber == NULL) |
| 3 | | Execution continues on line 688 | |
|
| |
| 7 | | Execution continues on line 688 | |
|
| 8 | | Assuming 'firstber' is equal to NULL | |
|
| |
689 | firstber = ber; |
690 | } |
691 | va_end(ap); |
692 | |
693 | return (ber); |
694 | fail: |
695 | if (origber != NULL) |
696 | ober_unlink_elements(origber); |
697 | ober_free_elements(firstber); |
698 | return (NULL); |
699 | } |
700 | |
701 | int |
702 | ober_scanf_elements(struct ber_element *ber, char *fmt, ...) |
703 | { |
704 | va_list ap; |
705 | int *d, level = -1; |
706 | unsigned int *t; |
707 | long long *i, l; |
708 | void **ptr; |
709 | size_t *len, ret = 0, n = strlen(fmt); |
710 | char **s; |
711 | off_t *pos; |
712 | struct ber_oid *o; |
713 | struct ber_element *parent[_MAX_SEQ], **e; |
714 | |
715 | memset(parent, 0, sizeof(struct ber_element *) * _MAX_SEQ); |
716 | |
717 | va_start(ap, fmt); |
718 | while (*fmt) { |
719 | if (ber == NULL && *fmt != '$' && *fmt != '}' && *fmt != ')') |
720 | goto fail; |
721 | switch (*fmt++) { |
722 | case '$': |
723 | if (ber != NULL) |
724 | goto fail; |
725 | ret++; |
726 | continue; |
727 | case 'B': |
728 | ptr = va_arg(ap, void **); |
729 | len = va_arg(ap, size_t *); |
730 | if (ober_get_bitstring(ber, ptr, len) == -1) |
731 | goto fail; |
732 | ret++; |
733 | break; |
734 | case 'b': |
735 | d = va_arg(ap, int *); |
736 | if (ober_get_boolean(ber, d) == -1) |
737 | goto fail; |
738 | ret++; |
739 | break; |
740 | case 'd': |
741 | d = va_arg(ap, int *); |
742 | if (ober_get_integer(ber, &l) == -1) |
743 | goto fail; |
744 | if (d != NULL) |
745 | *d = l; |
746 | ret++; |
747 | break; |
748 | case 'e': |
749 | e = va_arg(ap, struct ber_element **); |
750 | *e = ber; |
751 | ret++; |
752 | continue; |
753 | case 'E': |
754 | i = va_arg(ap, long long *); |
755 | if (ober_get_enumerated(ber, i) == -1) |
756 | goto fail; |
757 | ret++; |
758 | break; |
759 | case 'i': |
760 | i = va_arg(ap, long long *); |
761 | if (ober_get_integer(ber, i) == -1) |
762 | goto fail; |
763 | ret++; |
764 | break; |
765 | case 'o': |
766 | o = va_arg(ap, struct ber_oid *); |
767 | if (ober_get_oid(ber, o) == -1) |
768 | goto fail; |
769 | ret++; |
770 | break; |
771 | case 'S': |
772 | ret++; |
773 | break; |
774 | case 's': |
775 | s = va_arg(ap, char **); |
776 | if (ober_get_string(ber, s) == -1) |
777 | goto fail; |
778 | ret++; |
779 | break; |
780 | case 't': |
781 | d = va_arg(ap, int *); |
782 | t = va_arg(ap, unsigned int *); |
783 | if (d != NULL) |
784 | *d = ber->be_class; |
785 | if (t != NULL) |
786 | *t = ber->be_type; |
787 | ret++; |
788 | continue; |
789 | case 'x': |
790 | ptr = va_arg(ap, void **); |
791 | len = va_arg(ap, size_t *); |
792 | if (ober_get_nstring(ber, ptr, len) == -1) |
793 | goto fail; |
794 | ret++; |
795 | break; |
796 | case '0': |
797 | if (ber->be_encoding != BER_TYPE_NULL) |
798 | goto fail; |
799 | ret++; |
800 | break; |
801 | case '.': |
802 | if (ber->be_encoding != BER_TYPE_EOC) |
803 | goto fail; |
804 | ret++; |
805 | break; |
806 | case 'p': |
807 | pos = va_arg(ap, off_t *); |
808 | *pos = ober_getpos(ber); |
809 | ret++; |
810 | continue; |
811 | case '{': |
812 | case '(': |
813 | if (ber->be_encoding != BER_TYPE_SEQUENCE && |
814 | ber->be_encoding != BER_TYPE_SET) |
815 | goto fail; |
816 | if (level >= _MAX_SEQ-1) |
817 | goto fail; |
818 | parent[++level] = ber; |
819 | ber = ber->be_sub; |
820 | ret++; |
821 | continue; |
822 | case '}': |
823 | case ')': |
824 | if (level < 0 || parent[level] == NULL) |
825 | goto fail; |
826 | ber = parent[level--]; |
827 | ret++; |
828 | break; |
829 | default: |
830 | goto fail; |
831 | } |
832 | |
833 | ber = ber->be_next; |
834 | } |
835 | va_end(ap); |
836 | return (ret == n ? 0 : -1); |
837 | |
838 | fail: |
839 | va_end(ap); |
840 | return (-1); |
841 | |
842 | } |
843 | |
844 | ssize_t |
845 | ober_get_writebuf(struct ber *b, void **buf) |
846 | { |
847 | if (b->br_wbuf == NULL) |
848 | return -1; |
849 | *buf = b->br_wbuf; |
850 | return (b->br_wend - b->br_wbuf); |
851 | } |
852 | |
853 | |
854 | |
855 | |
856 | |
857 | |
858 | |
859 | |
860 | |
861 | |
862 | |
863 | |
864 | ssize_t |
865 | ober_write_elements(struct ber *ber, struct ber_element *root) |
866 | { |
867 | size_t len; |
868 | |
869 | |
870 | len = ober_calc_len(root); |
871 | DPRINTF("write ber element of %zd bytes length\n", len); |
872 | |
873 | if (ber->br_wbuf != NULL && ber->br_wbuf + len > ber->br_wend) { |
874 | free(ber->br_wbuf); |
875 | ber->br_wbuf = NULL; |
876 | } |
877 | if (ber->br_wbuf == NULL) { |
878 | if ((ber->br_wbuf = malloc(len)) == NULL) |
879 | return -1; |
880 | ber->br_wend = ber->br_wbuf + len; |
881 | } |
882 | |
883 | |
884 | ber->br_wptr = ber->br_wbuf; |
885 | |
886 | if (ober_dump_element(ber, root) == -1) |
887 | return -1; |
888 | |
889 | return (len); |
890 | } |
891 | |
892 | void |
893 | ober_set_readbuf(struct ber *b, void *buf, size_t len) |
894 | { |
895 | b->br_rbuf = b->br_rptr = buf; |
896 | b->br_rend = (u_int8_t *)buf + len; |
897 | } |
898 | |
899 | |
900 | |
901 | |
902 | |
903 | |
904 | |
905 | |
906 | |
907 | |
908 | |
909 | |
910 | |
911 | |
912 | struct ber_element * |
913 | ober_read_elements(struct ber *ber, struct ber_element *elm) |
914 | { |
915 | struct ber_element *root = elm; |
916 | |
917 | if (root == NULL) { |
918 | if ((root = ober_get_element(0)) == NULL) |
919 | return NULL; |
920 | } |
921 | |
922 | DPRINTF("read ber elements, root %p\n", root); |
923 | |
924 | if (ober_read_element(ber, root) == -1) { |
925 | |
926 | if (elm == NULL) |
927 | ober_free_elements(root); |
928 | return NULL; |
929 | } |
930 | |
931 | return root; |
932 | } |
933 | |
934 | off_t |
935 | ober_getpos(struct ber_element *elm) |
936 | { |
937 | return elm->be_offs; |
938 | } |
939 | |
940 | struct ber_element * |
941 | ober_dup(struct ber_element *orig) |
942 | { |
943 | struct ber_element *new; |
944 | |
945 | if ((new = malloc(sizeof(*new))) == NULL) |
946 | return NULL; |
947 | memcpy(new, orig, sizeof(*new)); |
948 | new->be_next = NULL; |
949 | new->be_sub = NULL; |
950 | |
951 | if (orig->be_next != NULL) { |
952 | if ((new->be_next = ober_dup(orig->be_next)) == NULL) |
953 | goto fail; |
954 | } |
955 | if (orig->be_encoding == BER_TYPE_SEQUENCE || |
956 | orig->be_encoding == BER_TYPE_SET) { |
957 | if (orig->be_sub != NULL) { |
958 | if ((new->be_sub = ober_dup(orig->be_sub)) == NULL) |
959 | goto fail; |
960 | } |
961 | } else if (orig->be_encoding == BER_TYPE_OCTETSTRING || |
962 | orig->be_encoding == BER_TYPE_BITSTRING || |
963 | orig->be_encoding == BER_TYPE_OBJECT) { |
964 | if (orig->be_val != NULL) { |
965 | if ((new->be_val = malloc(orig->be_len)) == NULL) |
966 | goto fail; |
967 | memcpy(new->be_val, orig->be_val, orig->be_len); |
968 | } |
969 | } else |
970 | new->be_numeric = orig->be_numeric; |
971 | return new; |
972 | fail: |
973 | ober_free_elements(new); |
974 | return NULL; |
975 | } |
976 | |
977 | void |
978 | ober_free_element(struct ber_element *root) |
979 | { |
980 | if (root->be_sub && (root->be_encoding == BER_TYPE_SEQUENCE || |
981 | root->be_encoding == BER_TYPE_SET)) |
982 | ober_free_elements(root->be_sub); |
983 | if (root->be_free && (root->be_encoding == BER_TYPE_OCTETSTRING || |
984 | root->be_encoding == BER_TYPE_BITSTRING || |
985 | root->be_encoding == BER_TYPE_OBJECT)) |
986 | free(root->be_val); |
987 | free(root); |
988 | } |
989 | |
990 | void |
991 | ober_free_elements(struct ber_element *root) |
992 | { |
993 | if (root == NULL) |
994 | return; |
995 | if (root->be_sub && (root->be_encoding == BER_TYPE_SEQUENCE || |
996 | root->be_encoding == BER_TYPE_SET)) |
997 | ober_free_elements(root->be_sub); |
998 | if (root->be_next) |
999 | ober_free_elements(root->be_next); |
1000 | if (root->be_free && (root->be_encoding == BER_TYPE_OCTETSTRING || |
1001 | root->be_encoding == BER_TYPE_BITSTRING || |
1002 | root->be_encoding == BER_TYPE_OBJECT)) |
1003 | free(root->be_val); |
1004 | free(root); |
1005 | } |
1006 | |
1007 | size_t |
1008 | ober_calc_len(struct ber_element *root) |
1009 | { |
1010 | unsigned int t; |
1011 | size_t s; |
1012 | size_t size = 2; |
1013 | |
1014 | |
1015 | if (root->be_sub && (root->be_encoding == BER_TYPE_SEQUENCE || |
1016 | root->be_encoding == BER_TYPE_SET)) |
1017 | root->be_len = ober_calc_len(root->be_sub); |
1018 | |
1019 | |
1020 | if (root->be_type > BER_TYPE_SINGLE_MAX) |
1021 | for (t = root->be_type; t > 0; t >>= 7) |
1022 | size++; |
1023 | if (root->be_len >= BER_TAG_MORE) |
1024 | for (s = root->be_len; s > 0; s >>= 8) |
1025 | size++; |
1026 | |
1027 | |
1028 | if (root->be_next) |
1029 | size += ober_calc_len(root->be_next); |
1030 | |
1031 | |
1032 | if (root->be_class == BER_CLASS_UNIVERSAL && |
1033 | root->be_type == BER_TYPE_EOC && root->be_len == 0) |
1034 | return (0); |
1035 | |
1036 | return (root->be_len + size); |
1037 | } |
1038 | |
1039 | void |
1040 | ober_set_application(struct ber *b, unsigned int (*cb)(struct ber_element *)) |
1041 | { |
1042 | b->br_application = cb; |
1043 | } |
1044 | |
1045 | void |
1046 | ober_set_writecallback(struct ber_element *elm, void (*cb)(void *, size_t), |
1047 | void *arg) |
1048 | { |
1049 | elm->be_cb = cb; |
1050 | elm->be_cbarg = arg; |
1051 | } |
1052 | |
1053 | void |
1054 | ober_free(struct ber *b) |
1055 | { |
1056 | free(b->br_wbuf); |
1057 | } |
1058 | |
1059 | |
1060 | |
1061 | |
1062 | |
1063 | static int |
1064 | ober_dump_element(struct ber *ber, struct ber_element *root) |
1065 | { |
1066 | unsigned long long l; |
1067 | int i; |
1068 | uint8_t u; |
1069 | |
1070 | ober_dump_header(ber, root); |
1071 | if (root->be_cb) |
1072 | root->be_cb(root->be_cbarg, ber->br_wptr - ber->br_wbuf); |
1073 | |
1074 | switch (root->be_encoding) { |
1075 | case BER_TYPE_BOOLEAN: |
1076 | case BER_TYPE_INTEGER: |
1077 | case BER_TYPE_ENUMERATED: |
1078 | l = (unsigned long long)root->be_numeric; |
1079 | for (i = root->be_len; i > 0; i--) { |
1080 | u = (l >> ((i - 1) * 8)) & 0xff; |
1081 | ober_putc(ber, u); |
1082 | } |
1083 | break; |
1084 | case BER_TYPE_BITSTRING: |
1085 | case BER_TYPE_OCTETSTRING: |
1086 | case BER_TYPE_OBJECT: |
1087 | ober_write(ber, root->be_val, root->be_len); |
1088 | break; |
1089 | case BER_TYPE_NULL: |
1090 | case BER_TYPE_EOC: |
1091 | break; |
1092 | case BER_TYPE_SEQUENCE: |
1093 | case BER_TYPE_SET: |
1094 | if (root->be_sub && ober_dump_element(ber, root->be_sub) == -1) |
1095 | return -1; |
1096 | break; |
1097 | } |
1098 | |
1099 | if (root->be_next == NULL) |
1100 | return 0; |
1101 | return ober_dump_element(ber, root->be_next); |
1102 | } |
1103 | |
1104 | static void |
1105 | ober_dump_header(struct ber *ber, struct ber_element *root) |
1106 | { |
1107 | u_char id = 0, t, buf[5]; |
1108 | unsigned int type; |
1109 | size_t size; |
1110 | |
1111 | |
1112 | |
1113 | if (root->be_type <= BER_TYPE_SINGLE_MAX) { |
1114 | id = root->be_type | (root->be_class << BER_CLASS_SHIFT); |
1115 | if (root->be_encoding == BER_TYPE_SEQUENCE || |
1116 | root->be_encoding == BER_TYPE_SET) |
1117 | id |= BER_TYPE_CONSTRUCTED; |
1118 | |
1119 | ober_putc(ber, id); |
1120 | } else { |
1121 | id = BER_TAG_MASK | (root->be_class << BER_CLASS_SHIFT); |
1122 | if (root->be_encoding == BER_TYPE_SEQUENCE || |
1123 | root->be_encoding == BER_TYPE_SET) |
1124 | id |= BER_TYPE_CONSTRUCTED; |
1125 | |
1126 | ober_putc(ber, id); |
1127 | |
1128 | for (t = 0, type = root->be_type; type > 0; type >>= 7) |
1129 | buf[t++] = type & ~BER_TAG_MORE; |
1130 | |
1131 | while (t-- > 0) { |
1132 | if (t > 0) |
1133 | buf[t] |= BER_TAG_MORE; |
1134 | ober_putc(ber, buf[t]); |
1135 | } |
1136 | } |
1137 | |
1138 | if (root->be_len < BER_TAG_MORE) { |
1139 | |
1140 | ober_putc(ber, root->be_len); |
1141 | } else { |
1142 | for (t = 0, size = root->be_len; size > 0; size >>= 8) |
1143 | buf[t++] = size & 0xff; |
1144 | |
1145 | ober_putc(ber, t | BER_TAG_MORE); |
1146 | |
1147 | while (t > 0) |
1148 | ober_putc(ber, buf[--t]); |
1149 | } |
1150 | } |
1151 | |
1152 | static void |
1153 | ober_putc(struct ber *ber, u_char c) |
1154 | { |
1155 | if (ber->br_wptr + 1 <= ber->br_wend) |
1156 | *ber->br_wptr = c; |
1157 | ber->br_wptr++; |
1158 | } |
1159 | |
1160 | static void |
1161 | ober_write(struct ber *ber, void *buf, size_t len) |
1162 | { |
1163 | if (ber->br_wptr + len <= ber->br_wend) |
1164 | bcopy(buf, ber->br_wptr, len); |
1165 | ber->br_wptr += len; |
1166 | } |
1167 | |
1168 | |
1169 | |
1170 | |
1171 | static ssize_t |
1172 | get_id(struct ber *b, unsigned int *tag, int *class, int *cstruct) |
1173 | { |
1174 | u_char u; |
1175 | size_t i = 0; |
1176 | unsigned int t = 0; |
1177 | |
1178 | if (ober_getc(b, &u) == -1) |
1179 | return -1; |
1180 | |
1181 | *class = (u >> BER_CLASS_SHIFT) & BER_CLASS_MASK; |
1182 | *cstruct = (u & BER_TYPE_CONSTRUCTED) == BER_TYPE_CONSTRUCTED; |
1183 | |
1184 | if ((u & BER_TAG_MASK) != BER_TAG_MASK) { |
1185 | *tag = u & BER_TAG_MASK; |
1186 | return 1; |
1187 | } |
1188 | |
1189 | do { |
1190 | if (ober_getc(b, &u) == -1) |
1191 | return -1; |
1192 | |
1193 | |
1194 | if (i == 0 && (u & ~BER_TAG_MORE) == 0) { |
1195 | errno = EINVAL; |
1196 | return -1; |
1197 | } |
1198 | |
1199 | t = (t << 7) | (u & ~BER_TAG_MORE); |
1200 | i++; |
1201 | if (i > sizeof(unsigned int)) { |
1202 | errno = ERANGE; |
1203 | return -1; |
1204 | } |
1205 | } while (u & BER_TAG_MORE); |
1206 | |
1207 | *tag = t; |
1208 | return i + 1; |
1209 | } |
1210 | |
1211 | |
1212 | |
1213 | |
1214 | static ssize_t |
1215 | get_len(struct ber *b, ssize_t *len) |
1216 | { |
1217 | u_char u, n; |
1218 | ssize_t s, r; |
1219 | |
1220 | if (ober_getc(b, &u) == -1) |
1221 | return -1; |
1222 | if ((u & BER_TAG_MORE) == 0) { |
1223 | |
1224 | *len = u; |
1225 | return 1; |
1226 | } |
1227 | |
1228 | if (u == 0x80) { |
1229 | |
1230 | errno = EINVAL; |
1231 | return -1; |
1232 | } |
1233 | |
1234 | if (u == 0xff) { |
1235 | |
1236 | errno = EINVAL; |
1237 | return -1; |
1238 | } |
1239 | |
1240 | n = u & ~BER_TAG_MORE; |
1241 | |
1242 | |
1243 | |
1244 | if (sizeof(int32_t) < n) { |
1245 | errno = ERANGE; |
1246 | return -1; |
1247 | } |
1248 | r = n + 1; |
1249 | |
1250 | for (s = 0; n > 0; n--) { |
1251 | if (ober_getc(b, &u) == -1) |
1252 | return -1; |
1253 | s = (s << 8) | u; |
1254 | } |
1255 | |
1256 | if (s < 0) { |
1257 | |
1258 | errno = ERANGE; |
1259 | return -1; |
1260 | } |
1261 | |
1262 | *len = s; |
1263 | return r; |
1264 | } |
1265 | |
1266 | static ssize_t |
1267 | ober_read_element(struct ber *ber, struct ber_element *elm) |
1268 | { |
1269 | long long val = 0; |
1270 | struct ber_element *next; |
1271 | unsigned int type; |
1272 | int i, class, cstruct, elements = 0; |
1273 | ssize_t len, r, totlen = 0; |
1274 | u_char c, last = 0; |
1275 | |
1276 | if ((r = get_id(ber, &type, &class, &cstruct)) == -1) |
1277 | return -1; |
1278 | DPRINTF("ber read got class %d type %u, %s\n", |
1279 | class, type, cstruct ? "constructed" : "primitive"); |
1280 | totlen += r; |
1281 | if ((r = get_len(ber, &len)) == -1) |
1282 | return -1; |
1283 | DPRINTF("ber read element size %zd\n", len); |
1284 | totlen += r + len; |
1285 | |
1286 | |
1287 | |
1288 | if (class == BER_CLASS_UNIVERSAL) |
1289 | if (type == BER_TYPE_BOOLEAN || |
1290 | type == BER_TYPE_INTEGER || |
1291 | type == BER_TYPE_ENUMERATED || |
1292 | type == BER_TYPE_NULL) |
1293 | if (cstruct) { |
1294 | errno = EINVAL; |
1295 | return -1; |
1296 | } |
1297 | |
1298 | |
1299 | |
1300 | if (len > ber->br_rend - ber->br_rptr) { |
1301 | errno = ECANCELED; |
1302 | return -1; |
1303 | } |
1304 | |
1305 | elm->be_type = type; |
1306 | elm->be_len = len; |
1307 | elm->be_offs = ber->br_offs; |
1308 | elm->be_class = class; |
1309 | |
1310 | if (elm->be_encoding == 0) { |
1311 | |
1312 | if (cstruct) |
1313 | elm->be_encoding = BER_TYPE_SEQUENCE; |
1314 | else if (class == BER_CLASS_UNIVERSAL) |
1315 | elm->be_encoding = type; |
1316 | else if (ber->br_application != NULL) { |
1317 | |
1318 | |
1319 | |
1320 | |
1321 | |
1322 | elm->be_encoding = (*ber->br_application)(elm); |
1323 | } else |
1324 | |
1325 | elm->be_encoding = BER_TYPE_NULL; |
1326 | } |
1327 | |
1328 | switch (elm->be_encoding) { |
1329 | case BER_TYPE_EOC: |
1330 | break; |
1331 | case BER_TYPE_BOOLEAN: |
1332 | if (len != 1) { |
1333 | errno = EINVAL; |
1334 | return -1; |
1335 | } |
1336 | case BER_TYPE_INTEGER: |
1337 | case BER_TYPE_ENUMERATED: |
1338 | if (len < 1) { |
1339 | errno = EINVAL; |
1340 | return -1; |
1341 | } |
1342 | if (len > (ssize_t)sizeof(long long)) { |
1343 | errno = ERANGE; |
1344 | return -1; |
1345 | } |
1346 | for (i = 0; i < len; i++) { |
1347 | if (ober_getc(ber, &c) != 1) |
1348 | return -1; |
1349 | |
1350 | |
1351 | if ((i == 1 && last == 0 && (c & 0x80) == 0) || |
1352 | (i == 1 && last == 0xff && (c & 0x80) != 0)) { |
1353 | errno = EINVAL; |
1354 | return -1; |
1355 | } |
1356 | |
1357 | val <<= 8; |
1358 | val |= c; |
1359 | last = c; |
1360 | } |
1361 | |
1362 | |
1363 | if (len < (ssize_t)sizeof(long long) && |
1364 | (val >> ((len - 1) * 8) & 0x80)) |
1365 | val |= ULLONG_MAX << (len * 8); |
1366 | elm->be_numeric = val; |
1367 | break; |
1368 | case BER_TYPE_BITSTRING: |
1369 | elm->be_val = malloc(len); |
1370 | if (elm->be_val == NULL) |
1371 | return -1; |
1372 | elm->be_free = 1; |
1373 | elm->be_len = len; |
1374 | ober_read(ber, elm->be_val, len); |
1375 | break; |
1376 | case BER_TYPE_OCTETSTRING: |
1377 | case BER_TYPE_OBJECT: |
1378 | elm->be_val = malloc(len + 1); |
1379 | if (elm->be_val == NULL) |
1380 | return -1; |
1381 | elm->be_free = 1; |
1382 | elm->be_len = len; |
1383 | ober_read(ber, elm->be_val, len); |
1384 | ((u_char *)elm->be_val)[len] = '\0'; |
1385 | break; |
1386 | case BER_TYPE_NULL: |
1387 | if (len != 0) { |
1388 | errno = EINVAL; |
1389 | return -1; |
1390 | } |
1391 | break; |
1392 | case BER_TYPE_SEQUENCE: |
1393 | case BER_TYPE_SET: |
1394 | if (len > 0 && elm->be_sub == NULL) { |
1395 | if ((elm->be_sub = ober_get_element(0)) == NULL) |
1396 | return -1; |
1397 | } |
1398 | next = elm->be_sub; |
1399 | while (len > 0) { |
1400 | |
1401 | |
1402 | |
1403 | |
1404 | if (elements >= BER_MAX_SEQ_ELEMENTS) { |
1405 | errno = ERANGE; |
1406 | return -1; |
1407 | } |
1408 | r = ober_read_element(ber, next); |
1409 | if (r == -1) { |
1410 | |
1411 | if (errno == ECANCELED) |
1412 | errno = EINVAL; |
1413 | return -1; |
1414 | } |
1415 | if (r > len) { |
1416 | errno = EINVAL; |
1417 | return -1; |
1418 | } |
1419 | elements++; |
1420 | len -= r; |
1421 | if (len > 0 && next->be_next == NULL) { |
1422 | next->be_next = ober_get_element(0); |
1423 | if (next->be_next == NULL) |
1424 | return -1; |
1425 | } |
1426 | next = next->be_next; |
1427 | } |
1428 | break; |
1429 | } |
1430 | return totlen; |
1431 | } |
1432 | |
1433 | static ssize_t |
1434 | ober_getc(struct ber *b, u_char *c) |
1435 | { |
1436 | return ober_read(b, c, 1); |
1437 | } |
1438 | |
1439 | static ssize_t |
1440 | ober_read(struct ber *ber, void *buf, size_t len) |
1441 | { |
1442 | size_t sz; |
1443 | |
1444 | if (ber->br_rbuf == NULL) { |
1445 | errno = ENOBUFS; |
1446 | return -1; |
1447 | } |
1448 | |
1449 | sz = ber->br_rend - ber->br_rptr; |
1450 | if (len > sz) { |
1451 | errno = ECANCELED; |
1452 | return -1; |
1453 | } |
1454 | |
1455 | bcopy(ber->br_rptr, buf, len); |
1456 | ber->br_rptr += len; |
1457 | ber->br_offs += len; |
1458 | |
1459 | return len; |
1460 | } |