1 /* crypto/asn1/a_bytes.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
61 #include <openssl/asn1_mac.h>
63 static unsigned long tag2bit[32]={
64 0, 0, 0, B_ASN1_BIT_STRING, /* tags 0 - 3 */
65 B_ASN1_OCTET_STRING, 0, 0, B_ASN1_UNKNOWN,/* tags 4- 7 */
66 B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN,/* tags 8-11 */
67 B_ASN1_UTF8STRING,B_ASN1_UNKNOWN,B_ASN1_UNKNOWN,B_ASN1_UNKNOWN,/* tags 12-15 */
68 0, 0, B_ASN1_NUMERICSTRING,B_ASN1_PRINTABLESTRING,
69 B_ASN1_T61STRING,B_ASN1_VIDEOTEXSTRING,B_ASN1_IA5STRING,0,
70 0,B_ASN1_GRAPHICSTRING,B_ASN1_ISO64STRING,B_ASN1_GENERALSTRING,
71 B_ASN1_UNIVERSALSTRING,B_ASN1_UNKNOWN,B_ASN1_BMPSTRING,B_ASN1_UNKNOWN,
74 static int asn1_collate_primitive(ASN1_STRING *a, ASN1_CTX *c);
75 /* type is a 'bitmap' of acceptable string types.
77 ASN1_STRING *d2i_ASN1_type_bytes(ASN1_STRING **a, unsigned char **pp,
78 long length, int type)
80 ASN1_STRING *ret=NULL;
87 inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
88 if (inf & 0x80) goto err;
92 i=ASN1_R_TAG_VALUE_TOO_HIGH;;
95 if (!(tag2bit[tag] & type))
101 /* If a bit-string, exit early */
102 if (tag == V_ASN1_BIT_STRING)
103 return(d2i_ASN1_BIT_STRING(a,pp,length));
105 if ((a == NULL) || ((*a) == NULL))
107 if ((ret=ASN1_STRING_new()) == NULL) return(NULL);
114 s=(unsigned char *)OPENSSL_malloc((int)len+1);
117 i=ERR_R_MALLOC_FAILURE;
120 memcpy(s,p,(int)len);
127 if (ret->data != NULL) OPENSSL_free(ret->data);
128 ret->length=(int)len;
131 if (a != NULL) (*a)=ret;
135 ASN1err(ASN1_F_D2I_ASN1_TYPE_BYTES,i);
136 if ((ret != NULL) && ((a == NULL) || (*a != ret)))
137 ASN1_STRING_free(ret);
141 int i2d_ASN1_bytes(ASN1_STRING *a, unsigned char **pp, int tag, int xclass)
143 int ret,r,constructed;
146 if (a == NULL) return(0);
148 if (tag == V_ASN1_BIT_STRING)
149 return(i2d_ASN1_BIT_STRING(a,pp));
152 r=ASN1_object_size(0,ret,tag);
153 if (pp == NULL) return(r);
156 if ((tag == V_ASN1_SEQUENCE) || (tag == V_ASN1_SET))
160 ASN1_put_object(&p,constructed,ret,tag,xclass);
161 memcpy(p,a->data,a->length);
167 ASN1_STRING *d2i_ASN1_bytes(ASN1_STRING **a, unsigned char **pp, long length,
168 int Ptag, int Pclass)
170 ASN1_STRING *ret=NULL;
176 if ((a == NULL) || ((*a) == NULL))
178 if ((ret=ASN1_STRING_new()) == NULL) return(NULL);
184 inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
187 i=ASN1_R_BAD_OBJECT_HEADER;
197 if (inf & V_ASN1_CONSTRUCTED)
207 c.max=(length == 0)?0:(p+length);
208 if (!asn1_collate_primitive(ret,&c))
219 if ((ret->length < len) || (ret->data == NULL))
221 if (ret->data != NULL) OPENSSL_free(ret->data);
222 s=(unsigned char *)OPENSSL_malloc((int)len + 1);
225 i=ERR_R_MALLOC_FAILURE;
231 memcpy(s,p,(int)len);
238 if (ret->data != NULL) OPENSSL_free(ret->data);
241 ret->length=(int)len;
246 if (a != NULL) (*a)=ret;
250 if ((ret != NULL) && ((a == NULL) || (*a != ret)))
251 ASN1_STRING_free(ret);
252 ASN1err(ASN1_F_D2I_ASN1_BYTES,i);
257 /* We are about to parse 0..n d2i_ASN1_bytes objects, we are to collapse
258 * them into the one structure that is then returned */
259 /* There have been a few bug fixes for this function from
260 * Paul Keogh <paul.keogh@sse.ie>, many thanks to him */
261 static int asn1_collate_primitive(ASN1_STRING *a, ASN1_CTX *c)
263 ASN1_STRING *os=NULL;
273 c->error=ERR_R_PASSED_NULL_PARAMETER;
282 c->eos=ASN1_check_infinite_end(&c->p,
283 (long)(c->max-c->p));
288 if (c->slen <= 0) break;
292 if (d2i_ASN1_bytes(&os,&c->p,c->max-c->p,c->tag,c->xclass)
295 c->error=ERR_R_ASN1_LIB;
299 if (!BUF_MEM_grow(&b,num+os->length))
301 c->error=ERR_R_BUF_LIB;
304 memcpy(&(b.data[num]),os->data,os->length);
306 c->slen-=(c->p-c->q);
310 if (!asn1_Finish(c)) goto err;
313 if (a->data != NULL) OPENSSL_free(a->data);
314 a->data=(unsigned char *)b.data;
315 if (os != NULL) ASN1_STRING_free(os);
318 ASN1err(ASN1_F_ASN1_COLLATE_PRIMITIVE,c->error);
319 if (os != NULL) ASN1_STRING_free(os);
320 if (b.data != NULL) OPENSSL_free(b.data);