OLD | NEW |
| (Empty) |
1 /* crypto/asn1/a_object.c */ | |
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
3 * All rights reserved. | |
4 * | |
5 * This package is an SSL implementation written | |
6 * by Eric Young (eay@cryptsoft.com). | |
7 * The implementation was written so as to conform with Netscapes SSL. | |
8 * | |
9 * This library is free for commercial and non-commercial use as long as | |
10 * the following conditions are aheared to. The following conditions | |
11 * apply to all code found in this distribution, be it the RC4, RSA, | |
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 * included with this distribution is covered by the same copyright terms | |
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
15 * | |
16 * Copyright remains Eric Young's, and as such any Copyright notices in | |
17 * the code are not to be removed. | |
18 * If this package is used in a product, Eric Young should be given attribution | |
19 * as the author of the parts of the library used. | |
20 * This can be in the form of a textual message at program startup or | |
21 * in documentation (online or textual) provided with the package. | |
22 * | |
23 * Redistribution and use in source and binary forms, with or without | |
24 * modification, are permitted provided that the following conditions | |
25 * are met: | |
26 * 1. Redistributions of source code must retain the copyright | |
27 * notice, this list of conditions and the following disclaimer. | |
28 * 2. Redistributions in binary form must reproduce the above copyright | |
29 * notice, this list of conditions and the following disclaimer in the | |
30 * documentation and/or other materials provided with the distribution. | |
31 * 3. All advertising materials mentioning features or use of this software | |
32 * must display the following acknowledgement: | |
33 * "This product includes cryptographic software written by | |
34 * Eric Young (eay@cryptsoft.com)" | |
35 * The word 'cryptographic' can be left out if the rouines from the library | |
36 * being used are not cryptographic related :-). | |
37 * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 * the apps directory (application code) you must include an acknowledgement: | |
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 * | |
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 * SUCH DAMAGE. | |
52 * | |
53 * The licence and distribution terms for any publically available version or | |
54 * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 * copied and put under another distribution licence | |
56 * [including the GNU Public Licence.] | |
57 */ | |
58 | |
59 #include <stdio.h> | |
60 #include <limits.h> | |
61 #include "cryptlib.h" | |
62 #include <openssl/buffer.h> | |
63 #include <openssl/asn1.h> | |
64 #include <openssl/objects.h> | |
65 #include <openssl/bn.h> | |
66 | |
67 int i2d_ASN1_OBJECT(ASN1_OBJECT *a, unsigned char **pp) | |
68 { | |
69 unsigned char *p; | |
70 int objsize; | |
71 | |
72 if ((a == NULL) || (a->data == NULL)) return(0); | |
73 | |
74 objsize = ASN1_object_size(0,a->length,V_ASN1_OBJECT); | |
75 if (pp == NULL) return objsize; | |
76 | |
77 p= *pp; | |
78 ASN1_put_object(&p,0,a->length,V_ASN1_OBJECT,V_ASN1_UNIVERSAL); | |
79 memcpy(p,a->data,a->length); | |
80 p+=a->length; | |
81 | |
82 *pp=p; | |
83 return(objsize); | |
84 } | |
85 | |
86 int a2d_ASN1_OBJECT(unsigned char *out, int olen, const char *buf, int num) | |
87 { | |
88 int i,first,len=0,c, use_bn; | |
89 char ftmp[24], *tmp = ftmp; | |
90 int tmpsize = sizeof ftmp; | |
91 const char *p; | |
92 unsigned long l; | |
93 BIGNUM *bl = NULL; | |
94 | |
95 if (num == 0) | |
96 return(0); | |
97 else if (num == -1) | |
98 num=strlen(buf); | |
99 | |
100 p=buf; | |
101 c= *(p++); | |
102 num--; | |
103 if ((c >= '0') && (c <= '2')) | |
104 { | |
105 first= c-'0'; | |
106 } | |
107 else | |
108 { | |
109 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_FIRST_NUM_TOO_LARGE); | |
110 goto err; | |
111 } | |
112 | |
113 if (num <= 0) | |
114 { | |
115 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_MISSING_SECOND_NUMBER); | |
116 goto err; | |
117 } | |
118 c= *(p++); | |
119 num--; | |
120 for (;;) | |
121 { | |
122 if (num <= 0) break; | |
123 if ((c != '.') && (c != ' ')) | |
124 { | |
125 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_SEPARATOR)
; | |
126 goto err; | |
127 } | |
128 l=0; | |
129 use_bn = 0; | |
130 for (;;) | |
131 { | |
132 if (num <= 0) break; | |
133 num--; | |
134 c= *(p++); | |
135 if ((c == ' ') || (c == '.')) | |
136 break; | |
137 if ((c < '0') || (c > '9')) | |
138 { | |
139 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_DI
GIT); | |
140 goto err; | |
141 } | |
142 if (!use_bn && l >= ((ULONG_MAX - 80) / 10L)) | |
143 { | |
144 use_bn = 1; | |
145 if (!bl) | |
146 bl = BN_new(); | |
147 if (!bl || !BN_set_word(bl, l)) | |
148 goto err; | |
149 } | |
150 if (use_bn) | |
151 { | |
152 if (!BN_mul_word(bl, 10L) | |
153 || !BN_add_word(bl, c-'0')) | |
154 goto err; | |
155 } | |
156 else | |
157 l=l*10L+(long)(c-'0'); | |
158 } | |
159 if (len == 0) | |
160 { | |
161 if ((first < 2) && (l >= 40)) | |
162 { | |
163 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_SECOND_NUM
BER_TOO_LARGE); | |
164 goto err; | |
165 } | |
166 if (use_bn) | |
167 { | |
168 if (!BN_add_word(bl, first * 40)) | |
169 goto err; | |
170 } | |
171 else | |
172 l+=(long)first*40; | |
173 } | |
174 i=0; | |
175 if (use_bn) | |
176 { | |
177 int blsize; | |
178 blsize = BN_num_bits(bl); | |
179 blsize = (blsize + 6)/7; | |
180 if (blsize > tmpsize) | |
181 { | |
182 if (tmp != ftmp) | |
183 OPENSSL_free(tmp); | |
184 tmpsize = blsize + 32; | |
185 tmp = OPENSSL_malloc(tmpsize); | |
186 if (!tmp) | |
187 goto err; | |
188 } | |
189 while(blsize--) | |
190 tmp[i++] = (unsigned char)BN_div_word(bl, 0x80L)
; | |
191 } | |
192 else | |
193 { | |
194 | |
195 for (;;) | |
196 { | |
197 tmp[i++]=(unsigned char)l&0x7f; | |
198 l>>=7L; | |
199 if (l == 0L) break; | |
200 } | |
201 | |
202 } | |
203 if (out != NULL) | |
204 { | |
205 if (len+i > olen) | |
206 { | |
207 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_BUFFER_TOO
_SMALL); | |
208 goto err; | |
209 } | |
210 while (--i > 0) | |
211 out[len++]=tmp[i]|0x80; | |
212 out[len++]=tmp[0]; | |
213 } | |
214 else | |
215 len+=i; | |
216 } | |
217 if (tmp != ftmp) | |
218 OPENSSL_free(tmp); | |
219 if (bl) | |
220 BN_free(bl); | |
221 return(len); | |
222 err: | |
223 if (tmp != ftmp) | |
224 OPENSSL_free(tmp); | |
225 if (bl) | |
226 BN_free(bl); | |
227 return(0); | |
228 } | |
229 | |
230 int i2t_ASN1_OBJECT(char *buf, int buf_len, ASN1_OBJECT *a) | |
231 { | |
232 return OBJ_obj2txt(buf, buf_len, a, 0); | |
233 } | |
234 | |
235 int i2a_ASN1_OBJECT(BIO *bp, ASN1_OBJECT *a) | |
236 { | |
237 char buf[80], *p = buf; | |
238 int i; | |
239 | |
240 if ((a == NULL) || (a->data == NULL)) | |
241 return(BIO_write(bp,"NULL",4)); | |
242 i=i2t_ASN1_OBJECT(buf,sizeof buf,a); | |
243 if (i > (int)(sizeof(buf) - 1)) | |
244 { | |
245 p = OPENSSL_malloc(i + 1); | |
246 if (!p) | |
247 return -1; | |
248 i2t_ASN1_OBJECT(p,i + 1,a); | |
249 } | |
250 if (i <= 0) | |
251 return BIO_write(bp, "<INVALID>", 9); | |
252 BIO_write(bp,p,i); | |
253 if (p != buf) | |
254 OPENSSL_free(p); | |
255 return(i); | |
256 } | |
257 | |
258 ASN1_OBJECT *d2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp, | |
259 long length) | |
260 { | |
261 const unsigned char *p; | |
262 long len; | |
263 int tag,xclass; | |
264 int inf,i; | |
265 ASN1_OBJECT *ret = NULL; | |
266 p= *pp; | |
267 inf=ASN1_get_object(&p,&len,&tag,&xclass,length); | |
268 if (inf & 0x80) | |
269 { | |
270 i=ASN1_R_BAD_OBJECT_HEADER; | |
271 goto err; | |
272 } | |
273 | |
274 if (tag != V_ASN1_OBJECT) | |
275 { | |
276 i=ASN1_R_EXPECTING_AN_OBJECT; | |
277 goto err; | |
278 } | |
279 ret = c2i_ASN1_OBJECT(a, &p, len); | |
280 if(ret) *pp = p; | |
281 return ret; | |
282 err: | |
283 ASN1err(ASN1_F_D2I_ASN1_OBJECT,i); | |
284 return(NULL); | |
285 } | |
286 ASN1_OBJECT *c2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp, | |
287 long len) | |
288 { | |
289 ASN1_OBJECT *ret=NULL; | |
290 const unsigned char *p; | |
291 unsigned char *data; | |
292 int i; | |
293 /* Sanity check OID encoding: can't have leading 0x80 in | |
294 * subidentifiers, see: X.690 8.19.2 | |
295 */ | |
296 for (i = 0, p = *pp; i < len; i++, p++) | |
297 { | |
298 if (*p == 0x80 && (!i || !(p[-1] & 0x80))) | |
299 { | |
300 ASN1err(ASN1_F_C2I_ASN1_OBJECT,ASN1_R_INVALID_OBJECT_ENC
ODING); | |
301 return NULL; | |
302 } | |
303 } | |
304 | |
305 /* only the ASN1_OBJECTs from the 'table' will have values | |
306 * for ->sn or ->ln */ | |
307 if ((a == NULL) || ((*a) == NULL) || | |
308 !((*a)->flags & ASN1_OBJECT_FLAG_DYNAMIC)) | |
309 { | |
310 if ((ret=ASN1_OBJECT_new()) == NULL) return(NULL); | |
311 } | |
312 else ret=(*a); | |
313 | |
314 p= *pp; | |
315 /* detach data from object */ | |
316 data = (unsigned char *)ret->data; | |
317 ret->data = NULL; | |
318 /* once detached we can change it */ | |
319 if ((data == NULL) || (ret->length < len)) | |
320 { | |
321 ret->length=0; | |
322 if (data != NULL) OPENSSL_free(data); | |
323 data=(unsigned char *)OPENSSL_malloc(len ? (int)len : 1); | |
324 if (data == NULL) | |
325 { i=ERR_R_MALLOC_FAILURE; goto err; } | |
326 ret->flags|=ASN1_OBJECT_FLAG_DYNAMIC_DATA; | |
327 } | |
328 memcpy(data,p,(int)len); | |
329 /* reattach data to object, after which it remains const */ | |
330 ret->data =data; | |
331 ret->length=(int)len; | |
332 ret->sn=NULL; | |
333 ret->ln=NULL; | |
334 /* ret->flags=ASN1_OBJECT_FLAG_DYNAMIC; we know it is dynamic */ | |
335 p+=len; | |
336 | |
337 if (a != NULL) (*a)=ret; | |
338 *pp=p; | |
339 return(ret); | |
340 err: | |
341 ASN1err(ASN1_F_C2I_ASN1_OBJECT,i); | |
342 if ((ret != NULL) && ((a == NULL) || (*a != ret))) | |
343 ASN1_OBJECT_free(ret); | |
344 return(NULL); | |
345 } | |
346 | |
347 ASN1_OBJECT *ASN1_OBJECT_new(void) | |
348 { | |
349 ASN1_OBJECT *ret; | |
350 | |
351 ret=(ASN1_OBJECT *)OPENSSL_malloc(sizeof(ASN1_OBJECT)); | |
352 if (ret == NULL) | |
353 { | |
354 ASN1err(ASN1_F_ASN1_OBJECT_NEW,ERR_R_MALLOC_FAILURE); | |
355 return(NULL); | |
356 } | |
357 ret->length=0; | |
358 ret->data=NULL; | |
359 ret->nid=0; | |
360 ret->sn=NULL; | |
361 ret->ln=NULL; | |
362 ret->flags=ASN1_OBJECT_FLAG_DYNAMIC; | |
363 return(ret); | |
364 } | |
365 | |
366 void ASN1_OBJECT_free(ASN1_OBJECT *a) | |
367 { | |
368 if (a == NULL) return; | |
369 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_STRINGS) | |
370 { | |
371 #ifndef CONST_STRICT /* disable purely for compile-time strict const checking. D
oing this on a "real" compile will cause memory leaks */ | |
372 if (a->sn != NULL) OPENSSL_free((void *)a->sn); | |
373 if (a->ln != NULL) OPENSSL_free((void *)a->ln); | |
374 #endif | |
375 a->sn=a->ln=NULL; | |
376 } | |
377 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_DATA) | |
378 { | |
379 if (a->data != NULL) OPENSSL_free((void *)a->data); | |
380 a->data=NULL; | |
381 a->length=0; | |
382 } | |
383 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC) | |
384 OPENSSL_free(a); | |
385 } | |
386 | |
387 ASN1_OBJECT *ASN1_OBJECT_create(int nid, unsigned char *data, int len, | |
388 const char *sn, const char *ln) | |
389 { | |
390 ASN1_OBJECT o; | |
391 | |
392 o.sn=sn; | |
393 o.ln=ln; | |
394 o.data=data; | |
395 o.nid=nid; | |
396 o.length=len; | |
397 o.flags=ASN1_OBJECT_FLAG_DYNAMIC|ASN1_OBJECT_FLAG_DYNAMIC_STRINGS| | |
398 ASN1_OBJECT_FLAG_DYNAMIC_DATA; | |
399 return(OBJ_dup(&o)); | |
400 } | |
401 | |
402 IMPLEMENT_STACK_OF(ASN1_OBJECT) | |
403 IMPLEMENT_ASN1_SET_OF(ASN1_OBJECT) | |
OLD | NEW |