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-rw-r--r--src/lib/libcrypto/asn1/bio_asn1.c496
1 files changed, 0 insertions, 496 deletions
diff --git a/src/lib/libcrypto/asn1/bio_asn1.c b/src/lib/libcrypto/asn1/bio_asn1.c
deleted file mode 100644
index 219810db82..0000000000
--- a/src/lib/libcrypto/asn1/bio_asn1.c
+++ /dev/null
@@ -1,496 +0,0 @@
1/* $OpenBSD: bio_asn1.c,v 1.11 2015/02/10 09:52:35 miod Exp $ */
2/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project.
4 */
5/* ====================================================================
6 * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59/* Experimental ASN1 BIO. When written through the data is converted
60 * to an ASN1 string type: default is OCTET STRING. Additional functions
61 * can be provided to add prefix and suffix data.
62 */
63
64#include <stdlib.h>
65#include <string.h>
66
67#include <openssl/bio.h>
68#include <openssl/asn1.h>
69
70/* Must be large enough for biggest tag+length */
71#define DEFAULT_ASN1_BUF_SIZE 20
72
73typedef enum {
74 ASN1_STATE_START,
75 ASN1_STATE_PRE_COPY,
76 ASN1_STATE_HEADER,
77 ASN1_STATE_HEADER_COPY,
78 ASN1_STATE_DATA_COPY,
79 ASN1_STATE_POST_COPY,
80 ASN1_STATE_DONE
81} asn1_bio_state_t;
82
83typedef struct BIO_ASN1_EX_FUNCS_st {
84 asn1_ps_func *ex_func;
85 asn1_ps_func *ex_free_func;
86} BIO_ASN1_EX_FUNCS;
87
88typedef struct BIO_ASN1_BUF_CTX_t {
89 /* Internal state */
90 asn1_bio_state_t state;
91 /* Internal buffer */
92 unsigned char *buf;
93 /* Size of buffer */
94 int bufsize;
95 /* Current position in buffer */
96 int bufpos;
97 /* Current buffer length */
98 int buflen;
99 /* Amount of data to copy */
100 int copylen;
101 /* Class and tag to use */
102 int asn1_class, asn1_tag;
103 asn1_ps_func *prefix, *prefix_free, *suffix, *suffix_free;
104 /* Extra buffer for prefix and suffix data */
105 unsigned char *ex_buf;
106 int ex_len;
107 int ex_pos;
108 void *ex_arg;
109} BIO_ASN1_BUF_CTX;
110
111
112static int asn1_bio_write(BIO *h, const char *buf, int num);
113static int asn1_bio_read(BIO *h, char *buf, int size);
114static int asn1_bio_puts(BIO *h, const char *str);
115static int asn1_bio_gets(BIO *h, char *str, int size);
116static long asn1_bio_ctrl(BIO *h, int cmd, long arg1, void *arg2);
117static int asn1_bio_new(BIO *h);
118static int asn1_bio_free(BIO *data);
119static long asn1_bio_callback_ctrl(BIO *h, int cmd, bio_info_cb *fp);
120
121static int asn1_bio_init(BIO_ASN1_BUF_CTX *ctx, int size);
122static int asn1_bio_flush_ex(BIO *b, BIO_ASN1_BUF_CTX *ctx,
123 asn1_ps_func *cleanup, asn1_bio_state_t next);
124static int asn1_bio_setup_ex(BIO *b, BIO_ASN1_BUF_CTX *ctx,
125 asn1_ps_func *setup, asn1_bio_state_t ex_state,
126 asn1_bio_state_t other_state);
127
128static BIO_METHOD methods_asn1 = {
129 .type = BIO_TYPE_ASN1,
130 .name = "asn1",
131 .bwrite = asn1_bio_write,
132 .bread = asn1_bio_read,
133 .bputs = asn1_bio_puts,
134 .bgets = asn1_bio_gets,
135 .ctrl = asn1_bio_ctrl,
136 .create = asn1_bio_new,
137 .destroy = asn1_bio_free,
138 .callback_ctrl = asn1_bio_callback_ctrl
139};
140
141BIO_METHOD *
142BIO_f_asn1(void)
143{
144 return (&methods_asn1);
145}
146
147static int
148asn1_bio_new(BIO *b)
149{
150 BIO_ASN1_BUF_CTX *ctx;
151 ctx = malloc(sizeof(BIO_ASN1_BUF_CTX));
152 if (!ctx)
153 return 0;
154 if (!asn1_bio_init(ctx, DEFAULT_ASN1_BUF_SIZE)) {
155 free(ctx);
156 return 0;
157 }
158 b->init = 1;
159 b->ptr = (char *)ctx;
160 b->flags = 0;
161 return 1;
162}
163
164static int
165asn1_bio_init(BIO_ASN1_BUF_CTX *ctx, int size)
166{
167 ctx->buf = malloc(size);
168 if (!ctx->buf)
169 return 0;
170 ctx->bufsize = size;
171 ctx->bufpos = 0;
172 ctx->buflen = 0;
173 ctx->copylen = 0;
174 ctx->asn1_class = V_ASN1_UNIVERSAL;
175 ctx->asn1_tag = V_ASN1_OCTET_STRING;
176 ctx->ex_buf = 0;
177 ctx->ex_pos = 0;
178 ctx->ex_len = 0;
179 ctx->state = ASN1_STATE_START;
180 return 1;
181}
182
183static int
184asn1_bio_free(BIO *b)
185{
186 BIO_ASN1_BUF_CTX *ctx;
187
188 ctx = (BIO_ASN1_BUF_CTX *) b->ptr;
189 if (ctx == NULL)
190 return 0;
191 free(ctx->buf);
192 free(ctx);
193 b->init = 0;
194 b->ptr = NULL;
195 b->flags = 0;
196 return 1;
197}
198
199static int
200asn1_bio_write(BIO *b, const char *in , int inl)
201{
202 BIO_ASN1_BUF_CTX *ctx;
203 int wrmax, wrlen, ret, buflen;
204 unsigned char *p;
205
206 if (!in || (inl < 0) || (b->next_bio == NULL))
207 return 0;
208 ctx = (BIO_ASN1_BUF_CTX *) b->ptr;
209 if (ctx == NULL)
210 return 0;
211
212 wrlen = 0;
213 ret = -1;
214
215 for (;;) {
216 switch (ctx->state) {
217
218 /* Setup prefix data, call it */
219 case ASN1_STATE_START:
220 if (!asn1_bio_setup_ex(b, ctx, ctx->prefix,
221 ASN1_STATE_PRE_COPY, ASN1_STATE_HEADER))
222 return 0;
223 break;
224
225 /* Copy any pre data first */
226 case ASN1_STATE_PRE_COPY:
227 ret = asn1_bio_flush_ex(b, ctx, ctx->prefix_free,
228 ASN1_STATE_HEADER);
229 if (ret <= 0)
230 goto done;
231 break;
232
233 case ASN1_STATE_HEADER:
234 buflen = ASN1_object_size(0, inl, ctx->asn1_tag) - inl;
235 if (buflen <= 0 || buflen > ctx->bufsize)
236 return -1;
237 ctx->buflen = buflen;
238 p = ctx->buf;
239 ASN1_put_object(&p, 0, inl,
240 ctx->asn1_tag, ctx->asn1_class);
241 ctx->copylen = inl;
242 ctx->state = ASN1_STATE_HEADER_COPY;
243 break;
244
245 case ASN1_STATE_HEADER_COPY:
246 ret = BIO_write(b->next_bio,
247 ctx->buf + ctx->bufpos, ctx->buflen);
248 if (ret <= 0)
249 goto done;
250
251 ctx->buflen -= ret;
252 if (ctx->buflen)
253 ctx->bufpos += ret;
254 else {
255 ctx->bufpos = 0;
256 ctx->state = ASN1_STATE_DATA_COPY;
257 }
258 break;
259
260 case ASN1_STATE_DATA_COPY:
261
262 if (inl > ctx->copylen)
263 wrmax = ctx->copylen;
264 else
265 wrmax = inl;
266 ret = BIO_write(b->next_bio, in, wrmax);
267 if (ret <= 0)
268 break;
269 wrlen += ret;
270 ctx->copylen -= ret;
271 in += ret;
272 inl -= ret;
273
274 if (ctx->copylen == 0)
275 ctx->state = ASN1_STATE_HEADER;
276 if (inl == 0)
277 goto done;
278 break;
279
280 default:
281 BIO_clear_retry_flags(b);
282 return 0;
283 }
284
285 }
286
287done:
288 BIO_clear_retry_flags(b);
289 BIO_copy_next_retry(b);
290
291 return (wrlen > 0) ? wrlen : ret;
292}
293
294static int
295asn1_bio_flush_ex(BIO *b, BIO_ASN1_BUF_CTX *ctx, asn1_ps_func *cleanup,
296 asn1_bio_state_t next)
297{
298 int ret;
299
300 if (ctx->ex_len <= 0)
301 return 1;
302 for (;;) {
303 ret = BIO_write(b->next_bio, ctx->ex_buf + ctx->ex_pos,
304 ctx->ex_len);
305 if (ret <= 0)
306 break;
307 ctx->ex_len -= ret;
308 if (ctx->ex_len > 0)
309 ctx->ex_pos += ret;
310 else {
311 if (cleanup)
312 cleanup(b, &ctx->ex_buf, &ctx->ex_len,
313 &ctx->ex_arg);
314 ctx->state = next;
315 ctx->ex_pos = 0;
316 break;
317 }
318 }
319 return ret;
320}
321
322static int
323asn1_bio_setup_ex(BIO *b, BIO_ASN1_BUF_CTX *ctx, asn1_ps_func *setup,
324 asn1_bio_state_t ex_state, asn1_bio_state_t other_state)
325{
326 if (setup && !setup(b, &ctx->ex_buf, &ctx->ex_len, &ctx->ex_arg)) {
327 BIO_clear_retry_flags(b);
328 return 0;
329 }
330 if (ctx->ex_len > 0)
331 ctx->state = ex_state;
332 else
333 ctx->state = other_state;
334 return 1;
335}
336
337static int
338asn1_bio_read(BIO *b, char *in , int inl)
339{
340 if (!b->next_bio)
341 return 0;
342 return BIO_read(b->next_bio, in , inl);
343}
344
345static int
346asn1_bio_puts(BIO *b, const char *str)
347{
348 return asn1_bio_write(b, str, strlen(str));
349}
350
351static int
352asn1_bio_gets(BIO *b, char *str, int size)
353{
354 if (!b->next_bio)
355 return 0;
356 return BIO_gets(b->next_bio, str , size);
357}
358
359static long
360asn1_bio_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp)
361{
362 if (b->next_bio == NULL)
363 return (0);
364 return BIO_callback_ctrl(b->next_bio, cmd, fp);
365}
366
367static long
368asn1_bio_ctrl(BIO *b, int cmd, long arg1, void *arg2)
369{
370 BIO_ASN1_BUF_CTX *ctx;
371 BIO_ASN1_EX_FUNCS *ex_func;
372 long ret = 1;
373
374 ctx = (BIO_ASN1_BUF_CTX *) b->ptr;
375 if (ctx == NULL)
376 return 0;
377 switch (cmd) {
378
379 case BIO_C_SET_PREFIX:
380 ex_func = arg2;
381 ctx->prefix = ex_func->ex_func;
382 ctx->prefix_free = ex_func->ex_free_func;
383 break;
384
385 case BIO_C_GET_PREFIX:
386 ex_func = arg2;
387 ex_func->ex_func = ctx->prefix;
388 ex_func->ex_free_func = ctx->prefix_free;
389 break;
390
391 case BIO_C_SET_SUFFIX:
392 ex_func = arg2;
393 ctx->suffix = ex_func->ex_func;
394 ctx->suffix_free = ex_func->ex_free_func;
395 break;
396
397 case BIO_C_GET_SUFFIX:
398 ex_func = arg2;
399 ex_func->ex_func = ctx->suffix;
400 ex_func->ex_free_func = ctx->suffix_free;
401 break;
402
403 case BIO_C_SET_EX_ARG:
404 ctx->ex_arg = arg2;
405 break;
406
407 case BIO_C_GET_EX_ARG:
408 *(void **)arg2 = ctx->ex_arg;
409 break;
410
411 case BIO_CTRL_FLUSH:
412 if (!b->next_bio)
413 return 0;
414
415 /* Call post function if possible */
416 if (ctx->state == ASN1_STATE_HEADER) {
417 if (!asn1_bio_setup_ex(b, ctx, ctx->suffix,
418 ASN1_STATE_POST_COPY, ASN1_STATE_DONE))
419 return 0;
420 }
421
422 if (ctx->state == ASN1_STATE_POST_COPY) {
423 ret = asn1_bio_flush_ex(b, ctx, ctx->suffix_free,
424 ASN1_STATE_DONE);
425 if (ret <= 0)
426 return ret;
427 }
428
429 if (ctx->state == ASN1_STATE_DONE)
430 return BIO_ctrl(b->next_bio, cmd, arg1, arg2);
431 else {
432 BIO_clear_retry_flags(b);
433 return 0;
434 }
435 break;
436
437
438 default:
439 if (!b->next_bio)
440 return 0;
441 return BIO_ctrl(b->next_bio, cmd, arg1, arg2);
442
443 }
444
445 return ret;
446}
447
448static int
449asn1_bio_set_ex(BIO *b, int cmd, asn1_ps_func *ex_func, asn1_ps_func
450 *ex_free_func)
451{
452 BIO_ASN1_EX_FUNCS extmp;
453
454 extmp.ex_func = ex_func;
455 extmp.ex_free_func = ex_free_func;
456 return BIO_ctrl(b, cmd, 0, &extmp);
457}
458
459static int
460asn1_bio_get_ex(BIO *b, int cmd, asn1_ps_func **ex_func,
461 asn1_ps_func **ex_free_func)
462{
463 BIO_ASN1_EX_FUNCS extmp;
464 int ret;
465
466 ret = BIO_ctrl(b, cmd, 0, &extmp);
467 if (ret > 0) {
468 *ex_func = extmp.ex_func;
469 *ex_free_func = extmp.ex_free_func;
470 }
471 return ret;
472}
473
474int
475BIO_asn1_set_prefix(BIO *b, asn1_ps_func *prefix, asn1_ps_func *prefix_free)
476{
477 return asn1_bio_set_ex(b, BIO_C_SET_PREFIX, prefix, prefix_free);
478}
479
480int
481BIO_asn1_get_prefix(BIO *b, asn1_ps_func **pprefix, asn1_ps_func **pprefix_free)
482{
483 return asn1_bio_get_ex(b, BIO_C_GET_PREFIX, pprefix, pprefix_free);
484}
485
486int
487BIO_asn1_set_suffix(BIO *b, asn1_ps_func *suffix, asn1_ps_func *suffix_free)
488{
489 return asn1_bio_set_ex(b, BIO_C_SET_SUFFIX, suffix, suffix_free);
490}
491
492int
493BIO_asn1_get_suffix(BIO *b, asn1_ps_func **psuffix, asn1_ps_func **psuffix_free)
494{
495 return asn1_bio_get_ex(b, BIO_C_GET_SUFFIX, psuffix, psuffix_free);
496}
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