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[openssl.git] / crypto / asn1 / a_type.c
1 /* crypto/asn1/a_type.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 "cryptlib.h"
61 #include "asn1_mac.h"
62
63 /* ASN1err(ASN1_F_ASN1_TYPE_NEW,ASN1_R_ERROR_STACK);
64  * ASN1err(ASN1_F_D2I_ASN1_BYTES,ASN1_R_ERROR_STACK);
65  * ASN1err(ASN1_F_D2I_ASN1_BYTES,ASN1_R_WRONG_TAG);
66  * ASN1err(ASN1_F_ASN1_COLLATE_PRIMATIVE,ASN1_R_WRONG_TAG);
67  */
68
69 #ifndef NOPROTO
70 static void ASN1_TYPE_component_free(ASN1_TYPE *a);
71 #else
72 static void ASN1_TYPE_component_free();
73 #endif
74
75 int i2d_ASN1_TYPE(a,pp)
76 ASN1_TYPE *a;
77 unsigned char **pp;
78         {
79         int r=0;
80
81         if (a == NULL) return(0);
82
83         switch (a->type)
84                 {
85         case V_ASN1_NULL:
86                 if (pp != NULL)
87                         ASN1_put_object(pp,0,0,V_ASN1_NULL,V_ASN1_UNIVERSAL);
88                 r=2;
89                 break;
90         case V_ASN1_INTEGER:
91         case V_ASN1_NEG_INTEGER:
92                 r=i2d_ASN1_INTEGER(a->value.integer,pp);
93                 break;
94         case V_ASN1_BIT_STRING:
95                 r=i2d_ASN1_BIT_STRING(a->value.bit_string,pp);
96                 break;
97         case V_ASN1_OCTET_STRING:
98                 r=i2d_ASN1_OCTET_STRING(a->value.octet_string,pp);
99                 break;
100         case V_ASN1_OBJECT:
101                 r=i2d_ASN1_OBJECT(a->value.object,pp);
102                 break;
103         case V_ASN1_PRINTABLESTRING:
104                 r=M_i2d_ASN1_PRINTABLESTRING(a->value.printablestring,pp);
105                 break;
106         case V_ASN1_T61STRING:
107                 r=M_i2d_ASN1_T61STRING(a->value.t61string,pp);
108                 break;
109         case V_ASN1_IA5STRING:
110                 r=M_i2d_ASN1_IA5STRING(a->value.ia5string,pp);
111                 break;
112         case V_ASN1_GENERALSTRING:
113                 r=M_i2d_ASN1_GENERALSTRING(a->value.generalstring,pp);
114                 break;
115         case V_ASN1_UNIVERSALSTRING:
116                 r=M_i2d_ASN1_UNIVERSALSTRING(a->value.universalstring,pp);
117                 break;
118         case V_ASN1_BMPSTRING:
119                 r=M_i2d_ASN1_BMPSTRING(a->value.bmpstring,pp);
120                 break;
121         case V_ASN1_UTCTIME:
122                 r=i2d_ASN1_UTCTIME(a->value.utctime,pp);
123                 break;
124         case V_ASN1_SET:
125         case V_ASN1_SEQUENCE:
126                 if (a->value.set == NULL)
127                         r=0;
128                 else
129                         {
130                         r=a->value.set->length;
131                         if (pp != NULL)
132                                 {
133                                 memcpy(*pp,a->value.set->data,r);
134                                 *pp+=r;
135                                 }
136                         }
137                 break;
138                 }
139         return(r);
140         }
141
142 ASN1_TYPE *d2i_ASN1_TYPE(a,pp,length)
143 ASN1_TYPE **a;
144 unsigned char **pp;
145 long length;
146         {
147         ASN1_TYPE *ret=NULL;
148         unsigned char *q,*p,*max;
149         int inf,tag,xclass;
150         long len;
151
152         if ((a == NULL) || ((*a) == NULL))
153                 {
154                 if ((ret=ASN1_TYPE_new()) == NULL) goto err;
155                 }
156         else
157                 ret=(*a);
158
159         p= *pp;
160         q=p;
161         max=(p+length);
162
163         inf=ASN1_get_object(&q,&len,&tag,&xclass,length);
164         if (inf & 0x80) goto err;
165         
166         ASN1_TYPE_component_free(ret);
167
168         switch (tag)
169                 {
170         case V_ASN1_NULL:
171                 p=q;
172                 ret->value.ptr=NULL;
173                 break;
174         case V_ASN1_INTEGER:
175                 if ((ret->value.integer=
176                         d2i_ASN1_INTEGER(NULL,&p,max-p)) == NULL)
177                         goto err;
178                 break;
179         case V_ASN1_BIT_STRING:
180                 if ((ret->value.bit_string=
181                         d2i_ASN1_BIT_STRING(NULL,&p,max-p)) == NULL)
182                         goto err;
183                 break;
184         case V_ASN1_OCTET_STRING:
185                 if ((ret->value.octet_string=
186                         d2i_ASN1_OCTET_STRING(NULL,&p,max-p)) == NULL)
187                         goto err;
188                 break;
189         case V_ASN1_OBJECT:
190                 if ((ret->value.object=
191                         d2i_ASN1_OBJECT(NULL,&p,max-p)) == NULL)
192                         goto err;
193                 break;
194         case V_ASN1_PRINTABLESTRING:
195                 if ((ret->value.printablestring=
196                         d2i_ASN1_PRINTABLESTRING(NULL,&p,max-p)) == NULL)
197                         goto err;
198                 break;
199         case V_ASN1_T61STRING:
200                 if ((ret->value.t61string=
201                         M_d2i_ASN1_T61STRING(NULL,&p,max-p)) == NULL)
202                         goto err;
203                 break;
204         case V_ASN1_IA5STRING:
205                 if ((ret->value.ia5string=
206                         M_d2i_ASN1_IA5STRING(NULL,&p,max-p)) == NULL)
207                         goto err;
208                 break;
209         case V_ASN1_GENERALSTRING:
210                 if ((ret->value.generalstring=
211                         M_d2i_ASN1_GENERALSTRING(NULL,&p,max-p)) == NULL)
212                         goto err;
213                 break;
214         case V_ASN1_UNIVERSALSTRING:
215                 if ((ret->value.universalstring=
216                         M_d2i_ASN1_UNIVERSALSTRING(NULL,&p,max-p)) == NULL)
217                         goto err;
218                 break;
219         case V_ASN1_BMPSTRING:
220                 if ((ret->value.bmpstring=
221                         M_d2i_ASN1_BMPSTRING(NULL,&p,max-p)) == NULL)
222                         goto err;
223                 break;
224         case V_ASN1_UTCTIME:
225                 if ((ret->value.utctime=
226                         d2i_ASN1_UTCTIME(NULL,&p,max-p)) == NULL)
227                         goto err;
228                 break;
229         case V_ASN1_SET:
230         case V_ASN1_SEQUENCE:
231                 /* Sets and sequences are left complete */
232                 if ((ret->value.set=ASN1_STRING_new()) == NULL) goto err;
233                 ret->value.set->type=tag;
234                 len+=(q-p);
235                 if (!ASN1_STRING_set(ret->value.set,p,(int)len)) goto err;
236                 p+=len;
237                 break;
238         default:
239                 ASN1err(ASN1_F_D2I_ASN1_TYPE,ASN1_R_BAD_TYPE);
240                 goto err;
241                 }
242
243         ret->type=tag;
244         if (a != NULL) (*a)=ret;
245         *pp=p;
246         return(ret);
247 err:
248         if ((ret != NULL) && ((a == NULL) || (*a != ret))) ASN1_TYPE_free(ret);
249         return(NULL);
250         }
251
252 ASN1_TYPE *ASN1_TYPE_new()
253         {
254         ASN1_TYPE *ret=NULL;
255
256         M_ASN1_New_Malloc(ret,ASN1_TYPE);
257         ret->type= -1;
258         ret->value.ptr=NULL;
259         return(ret);
260         M_ASN1_New_Error(ASN1_F_ASN1_TYPE_NEW);
261         }
262
263 void ASN1_TYPE_free(a)
264 ASN1_TYPE *a;
265         {
266         if (a == NULL) return;
267         ASN1_TYPE_component_free(a);
268         Free((char *)(char *)a);
269         }
270
271 int ASN1_TYPE_get(a)
272 ASN1_TYPE *a;
273         {
274         if (a->value.ptr != NULL)
275                 return(a->type);
276         else
277                 return(0);
278         }
279
280 void ASN1_TYPE_set(a,type,value)
281 ASN1_TYPE *a;
282 int type;
283 char *value;
284         {
285         if (a->value.ptr != NULL)
286                 ASN1_TYPE_component_free(a);
287         a->type=type;
288         a->value.ptr=value;
289         }
290
291 static void ASN1_TYPE_component_free(a)
292 ASN1_TYPE *a;
293         {
294         if (a == NULL) return;
295
296         if (a->value.ptr != NULL)
297                 {
298                 switch (a->type)
299                         {
300                 case V_ASN1_OBJECT:
301                         ASN1_OBJECT_free(a->value.object);
302                         break;
303                 case V_ASN1_INTEGER:
304                 case V_ASN1_NEG_INTEGER:
305                 case V_ASN1_BIT_STRING:
306                 case V_ASN1_OCTET_STRING:
307                 case V_ASN1_PRINTABLESTRING:
308                 case V_ASN1_T61STRING:
309                 case V_ASN1_IA5STRING:
310                 case V_ASN1_UNIVERSALSTRING:
311                 case V_ASN1_GENERALSTRING:
312                 case V_ASN1_UTCTIME:
313                 case V_ASN1_SET:
314                 case V_ASN1_SEQUENCE:
315                         ASN1_STRING_free((ASN1_STRING *)a->value.ptr);
316                         break;
317                 default:
318                         /* MEMORY LEAK */
319                         break;
320                         }
321                 a->type=0;
322                 a->value.ptr=NULL;
323                 }
324         }
325