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[thirdparty/openssl.git] / crypto / asn1 / a_object.c
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d02b48c6 1/* crypto/asn1/a_object.c */
58964a49 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6
RE
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 "cryptlib.h"
61#include "buffer.h"
62#include "asn1.h"
63#include "objects.h"
64
65/* ASN1err(ASN1_F_ASN1_OBJECT_NEW,ASN1_R_EXPECTING_AN_OBJECT);
66 * ASN1err(ASN1_F_D2I_ASN1_OBJECT,ASN1_R_BAD_OBJECT_HEADER);
58964a49 67 * ASN1err(ASN1_F_I2T_ASN1_OBJECT,ASN1_R_BAD_OBJECT_HEADER);
d02b48c6
RE
68 */
69
6b691a5c 70int i2d_ASN1_OBJECT(ASN1_OBJECT *a, unsigned char **pp)
d02b48c6
RE
71 {
72 unsigned char *p;
73
74 if ((a == NULL) || (a->data == NULL)) return(0);
75
76 if (pp == NULL)
77 return(ASN1_object_size(0,a->length,V_ASN1_OBJECT));
78
79 p= *pp;
80 ASN1_put_object(&p,0,a->length,V_ASN1_OBJECT,V_ASN1_UNIVERSAL);
81 memcpy(p,a->data,a->length);
82 p+=a->length;
83
84 *pp=p;
85 return(a->length);
86 }
87
6b691a5c 88int a2d_ASN1_OBJECT(unsigned char *out, int olen, const char *buf, int num)
d02b48c6
RE
89 {
90 int i,first,len=0,c;
e778802f
BL
91 char tmp[24];
92 const char *p;
d02b48c6
RE
93 unsigned long l;
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')*40;
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 for (;;)
130 {
131 if (num <= 0) break;
132 num--;
133 c= *(p++);
134 if ((c == ' ') || (c == '.'))
135 break;
136 if ((c < '0') || (c > '9'))
137 {
138 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_DIGIT);
139 goto err;
140 }
141 l=l*10L+(long)(c-'0');
142 }
143 if (len == 0)
144 {
145 if ((first < 2) && (l >= 40))
146 {
147 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_SECOND_NUMBER_TOO_LARGE);
148 goto err;
149 }
150 l+=(long)first;
151 }
152 i=0;
153 for (;;)
154 {
155 tmp[i++]=(unsigned char)l&0x7f;
156 l>>=7L;
157 if (l == 0L) break;
158 }
159 if (out != NULL)
160 {
161 if (len+i > olen)
162 {
163 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_BUFFER_TOO_SMALL);
164 goto err;
165 }
166 while (--i > 0)
167 out[len++]=tmp[i]|0x80;
168 out[len++]=tmp[0];
169 }
170 else
171 len+=i;
172 }
173 return(len);
174err:
175 return(0);
176 }
177
6b691a5c 178int i2t_ASN1_OBJECT(char *buf, int buf_len, ASN1_OBJECT *a)
d02b48c6 179 {
58964a49 180 int i,idx=0,n=0,len,nid;
d02b48c6
RE
181 unsigned long l;
182 unsigned char *p;
e778802f 183 const char *s;
58964a49
RE
184 char tbuf[32];
185
186 if (buf_len <= 0) return(0);
d02b48c6
RE
187
188 if ((a == NULL) || (a->data == NULL))
189 {
58964a49
RE
190 buf[0]='\0';
191 return(0);
d02b48c6
RE
192 }
193
194 nid=OBJ_obj2nid(a);
195 if (nid == NID_undef)
196 {
197 len=a->length;
198 p=a->data;
199
200 idx=0;
201 l=0;
202 while (idx < a->length)
203 {
204 l|=(p[idx]&0x7f);
205 if (!(p[idx] & 0x80)) break;
206 l<<=7L;
207 idx++;
208 }
209 idx++;
210 i=(int)(l/40);
211 if (i > 2) i=2;
212 l-=(long)(i*40);
213
58964a49
RE
214 sprintf(tbuf,"%d.%ld",i,l);
215 i=strlen(tbuf);
216 strncpy(buf,tbuf,buf_len);
217 buf_len-=i;
218 buf+=i;
d02b48c6
RE
219 n+=i;
220
221 l=0;
222 for (; idx<len; idx++)
223 {
224 l|=p[idx]&0x7f;
225 if (!(p[idx] & 0x80))
226 {
58964a49
RE
227 sprintf(tbuf,".%ld",l);
228 i=strlen(tbuf);
229 if (buf_len > 0)
230 strncpy(buf,tbuf,buf_len);
231 buf_len-=i;
232 buf+=i;
d02b48c6
RE
233 n+=i;
234 l=0;
235 }
236 l<<=7L;
237 }
238 }
239 else
240 {
e778802f 241 s=OBJ_nid2ln(nid);
d02b48c6 242 if (s == NULL)
e778802f 243 s=OBJ_nid2sn(nid);
58964a49
RE
244 strncpy(buf,s,buf_len);
245 n=strlen(s);
d02b48c6 246 }
58964a49 247 buf[buf_len-1]='\0';
d02b48c6 248 return(n);
58964a49
RE
249 }
250
6b691a5c 251int i2a_ASN1_OBJECT(BIO *bp, ASN1_OBJECT *a)
58964a49
RE
252 {
253 char buf[80];
254 int i;
255
256 if ((a == NULL) || (a->data == NULL))
257 return(BIO_write(bp,"NULL",4));
258 i=i2t_ASN1_OBJECT(buf,80,a);
259 if (i > 80) i=80;
260 BIO_write(bp,buf,i);
261 return(i);
d02b48c6
RE
262 }
263
6b691a5c
UM
264ASN1_OBJECT *d2i_ASN1_OBJECT(ASN1_OBJECT **a, unsigned char **pp,
265 long length)
d02b48c6
RE
266 {
267 ASN1_OBJECT *ret=NULL;
268 unsigned char *p;
269 long len;
270 int tag,xclass;
271 int inf,i;
272
273 /* only the ASN1_OBJECTs from the 'table' will have values
274 * for ->sn or ->ln */
275 if ((a == NULL) || ((*a) == NULL) ||
276 !((*a)->flags & ASN1_OBJECT_FLAG_DYNAMIC))
277 {
278 if ((ret=ASN1_OBJECT_new()) == NULL) return(NULL);
279 }
280 else ret=(*a);
281
282 p= *pp;
283
284 inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
285 if (inf & 0x80)
286 {
287 i=ASN1_R_BAD_OBJECT_HEADER;
288 goto err;
289 }
290
291 if (tag != V_ASN1_OBJECT)
292 {
293 i=ASN1_R_EXPECTING_AN_OBJECT;
294 goto err;
295 }
296 if ((ret->data == NULL) || (ret->length < len))
297 {
298 if (ret->data != NULL) Free((char *)ret->data);
299 ret->data=(unsigned char *)Malloc((int)len);
300 ret->flags|=ASN1_OBJECT_FLAG_DYNAMIC_DATA;
301 if (ret->data == NULL)
302 { i=ERR_R_MALLOC_FAILURE; goto err; }
303 }
304 memcpy(ret->data,p,(int)len);
305 ret->length=(int)len;
306 ret->sn=NULL;
307 ret->ln=NULL;
308 /* ret->flags=ASN1_OBJECT_FLAG_DYNAMIC; we know it is dynamic */
309 p+=len;
310
311 if (a != NULL) (*a)=ret;
312 *pp=p;
313 return(ret);
314err:
315 ASN1err(ASN1_F_D2I_ASN1_OBJECT,i);
316 if ((ret != NULL) && ((a == NULL) || (*a != ret)))
317 ASN1_OBJECT_free(ret);
318 return(NULL);
319 }
320
6b691a5c 321ASN1_OBJECT *ASN1_OBJECT_new(void)
d02b48c6
RE
322 {
323 ASN1_OBJECT *ret;
324
325 ret=(ASN1_OBJECT *)Malloc(sizeof(ASN1_OBJECT));
326 if (ret == NULL)
327 {
328 ASN1err(ASN1_F_ASN1_OBJECT_NEW,ERR_R_MALLOC_FAILURE);
329 return(NULL);
330 }
331 ret->length=0;
332 ret->data=NULL;
333 ret->nid=0;
334 ret->sn=NULL;
335 ret->ln=NULL;
336 ret->flags=ASN1_OBJECT_FLAG_DYNAMIC;
337 return(ret);
338 }
339
6b691a5c 340void ASN1_OBJECT_free(ASN1_OBJECT *a)
d02b48c6
RE
341 {
342 if (a == NULL) return;
343 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_STRINGS)
344 {
e778802f
BL
345#ifndef CONST_STRICT /* disable purely for compile-time strict const checking. Doing this on a "real" compile will cause mempory leaks */
346 if (a->sn != NULL) Free((void *)a->sn);
347 if (a->ln != NULL) Free((void *)a->ln);
348#endif
d02b48c6
RE
349 a->sn=a->ln=NULL;
350 }
351 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_DATA)
352 {
353 if (a->data != NULL) Free(a->data);
354 a->data=NULL;
355 a->length=0;
356 }
357 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC)
e778802f 358 Free(a);
d02b48c6
RE
359 }
360
6b691a5c
UM
361ASN1_OBJECT *ASN1_OBJECT_create(int nid, unsigned char *data, int len,
362 char *sn, char *ln)
d02b48c6
RE
363 {
364 ASN1_OBJECT o;
365
366 o.sn=sn;
367 o.ln=ln;
368 o.data=data;
369 o.nid=nid;
370 o.length=len;
dfeab068
RE
371 o.flags=ASN1_OBJECT_FLAG_DYNAMIC|ASN1_OBJECT_FLAG_DYNAMIC_STRINGS|
372 ASN1_OBJECT_FLAG_DYNAMIC_DATA;
d02b48c6
RE
373 return(OBJ_dup(&o));
374 }
375