Remove references to o_time.h
[openssl.git] / crypto / asn1 / asn1_par.c
1 /* crypto/asn1/asn1_par.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 <openssl/buffer.h>
62 #include <openssl/objects.h>
63 #include <openssl/asn1.h>
64
65 static int asn1_print_info(BIO *bp, int tag, int xclass,int constructed,
66         int indent);
67 static int asn1_parse2(BIO *bp, const unsigned char **pp, long length,
68         int offset, int depth, int indent, int dump);
69 static int asn1_print_info(BIO *bp, int tag, int xclass, int constructed,
70              int indent)
71         {
72         static const char fmt[]="%-18s";
73         char str[128];
74         const char *p;
75
76         if (constructed & V_ASN1_CONSTRUCTED)
77                 p="cons: ";
78         else
79                 p="prim: ";
80         if (BIO_write(bp,p,6) < 6) goto err;
81         BIO_indent(bp,indent,128);
82
83         p=str;
84         if ((xclass & V_ASN1_PRIVATE) == V_ASN1_PRIVATE)
85                 BIO_snprintf(str,sizeof str,"priv [ %d ] ",tag);
86         else if ((xclass & V_ASN1_CONTEXT_SPECIFIC) == V_ASN1_CONTEXT_SPECIFIC)
87                 BIO_snprintf(str,sizeof str,"cont [ %d ]",tag);
88         else if ((xclass & V_ASN1_APPLICATION) == V_ASN1_APPLICATION)
89                 BIO_snprintf(str,sizeof str,"appl [ %d ]",tag);
90         else if (tag > 30)
91                 BIO_snprintf(str,sizeof str,"<ASN1 %d>",tag);
92         else
93                 p = ASN1_tag2str(tag);
94
95         if (BIO_printf(bp,fmt,p) <= 0)
96                 goto err;
97         return(1);
98 err:
99         return(0);
100         }
101
102 int ASN1_parse(BIO *bp, const unsigned char *pp, long len, int indent)
103         {
104         return(asn1_parse2(bp,&pp,len,0,0,indent,0));
105         }
106
107 int ASN1_parse_dump(BIO *bp, const unsigned char *pp, long len, int indent, int dump)
108         {
109         return(asn1_parse2(bp,&pp,len,0,0,indent,dump));
110         }
111
112 static int asn1_parse2(BIO *bp, const unsigned char **pp, long length, int offset,
113              int depth, int indent, int dump)
114         {
115         const unsigned char *p,*ep,*tot,*op,*opp;
116         long len;
117         int tag,xclass,ret=0;
118         int nl,hl,j,r;
119         ASN1_OBJECT *o=NULL;
120         ASN1_OCTET_STRING *os=NULL;
121         /* ASN1_BMPSTRING *bmp=NULL;*/
122         int dump_indent;
123
124 #if 0
125         dump_indent = indent;
126 #else
127         dump_indent = 6;        /* Because we know BIO_dump_indent() */
128 #endif
129         p= *pp;
130         tot=p+length;
131         op=p-1;
132         while ((p < tot) && (op < p))
133                 {
134                 op=p;
135                 j=ASN1_get_object(&p,&len,&tag,&xclass,length);
136 #ifdef LINT
137                 j=j;
138 #endif
139                 if (j & 0x80)
140                         {
141                         if (BIO_write(bp,"Error in encoding\n",18) <= 0)
142                                 goto end;
143                         ret=0;
144                         goto end;
145                         }
146                 hl=(p-op);
147                 length-=hl;
148                 /* if j == 0x21 it is a constructed indefinite length object */
149                 if (BIO_printf(bp,"%5ld:",(long)offset+(long)(op- *pp))
150                         <= 0) goto end;
151
152                 if (j != (V_ASN1_CONSTRUCTED | 1))
153                         {
154                         if (BIO_printf(bp,"d=%-2d hl=%ld l=%4ld ",
155                                 depth,(long)hl,len) <= 0)
156                                 goto end;
157                         }
158                 else
159                         {
160                         if (BIO_printf(bp,"d=%-2d hl=%ld l=inf  ",
161                                 depth,(long)hl) <= 0)
162                                 goto end;
163                         }
164                 if (!asn1_print_info(bp,tag,xclass,j,(indent)?depth:0))
165                         goto end;
166                 if (j & V_ASN1_CONSTRUCTED)
167                         {
168                         ep=p+len;
169                         if (BIO_write(bp,"\n",1) <= 0) goto end;
170                         if (len > length)
171                                 {
172                                 BIO_printf(bp,
173                                         "length is greater than %ld\n",length);
174                                 ret=0;
175                                 goto end;
176                                 }
177                         if ((j == 0x21) && (len == 0))
178                                 {
179                                 for (;;)
180                                         {
181                                         r=asn1_parse2(bp,&p,(long)(tot-p),
182                                                 offset+(p - *pp),depth+1,
183                                                 indent,dump);
184                                         if (r == 0) { ret=0; goto end; }
185                                         if ((r == 2) || (p >= tot)) break;
186                                         }
187                                 }
188                         else
189                                 while (p < ep)
190                                         {
191                                         r=asn1_parse2(bp,&p,(long)len,
192                                                 offset+(p - *pp),depth+1,
193                                                 indent,dump);
194                                         if (r == 0) { ret=0; goto end; }
195                                         }
196                         }
197                 else if (xclass != 0)
198                         {
199                         p+=len;
200                         if (BIO_write(bp,"\n",1) <= 0) goto end;
201                         }
202                 else
203                         {
204                         nl=0;
205                         if (    (tag == V_ASN1_PRINTABLESTRING) ||
206                                 (tag == V_ASN1_T61STRING) ||
207                                 (tag == V_ASN1_IA5STRING) ||
208                                 (tag == V_ASN1_VISIBLESTRING) ||
209                                 (tag == V_ASN1_NUMERICSTRING) ||
210                                 (tag == V_ASN1_UTF8STRING) ||
211                                 (tag == V_ASN1_UTCTIME) ||
212                                 (tag == V_ASN1_GENERALIZEDTIME))
213                                 {
214                                 if (BIO_write(bp,":",1) <= 0) goto end;
215                                 if ((len > 0) &&
216                                         BIO_write(bp,(const char *)p,(int)len)
217                                         != (int)len)
218                                         goto end;
219                                 }
220                         else if (tag == V_ASN1_OBJECT)
221                                 {
222                                 opp=op;
223                                 if (d2i_ASN1_OBJECT(&o,&opp,len+hl) != NULL)
224                                         {
225                                         if (BIO_write(bp,":",1) <= 0) goto end;
226                                         i2a_ASN1_OBJECT(bp,o);
227                                         }
228                                 else
229                                         {
230                                         if (BIO_write(bp,":BAD OBJECT",11) <= 0)
231                                                 goto end;
232                                         }
233                                 }
234                         else if (tag == V_ASN1_BOOLEAN)
235                                 {
236                                 int ii;
237
238                                 opp=op;
239                                 ii=d2i_ASN1_BOOLEAN(NULL,&opp,len+hl);
240                                 if (ii < 0)
241                                         {
242                                         if (BIO_write(bp,"Bad boolean\n",12) <= 0)
243                                                 goto end;
244                                         }
245                                 BIO_printf(bp,":%d",ii);
246                                 }
247                         else if (tag == V_ASN1_BMPSTRING)
248                                 {
249                                 /* do the BMP thang */
250                                 }
251                         else if (tag == V_ASN1_OCTET_STRING)
252                                 {
253                                 int i,printable=1;
254
255                                 opp=op;
256                                 os=d2i_ASN1_OCTET_STRING(NULL,&opp,len+hl);
257                                 if (os != NULL && os->length > 0)
258                                         {
259                                         opp = os->data;
260                                         /* testing whether the octet string is
261                                          * printable */
262                                         for (i=0; i<os->length; i++)
263                                                 {
264                                                 if ((   (opp[i] < ' ') &&
265                                                         (opp[i] != '\n') &&
266                                                         (opp[i] != '\r') &&
267                                                         (opp[i] != '\t')) ||
268                                                         (opp[i] > '~'))
269                                                         {
270                                                         printable=0;
271                                                         break;
272                                                         }
273                                                 }
274                                         if (printable)
275                                         /* printable string */
276                                                 {
277                                                 if (BIO_write(bp,":",1) <= 0)
278                                                         goto end;
279                                                 if (BIO_write(bp,(const char *)opp,
280                                                         os->length) <= 0)
281                                                         goto end;
282                                                 }
283                                         else if (!dump)
284                                         /* not printable => print octet string
285                                          * as hex dump */
286                                                 {
287                                                 if (BIO_write(bp,"[HEX DUMP]:",11) <= 0)
288                                                         goto end;
289                                                 for (i=0; i<os->length; i++)
290                                                         {
291                                                         if (BIO_printf(bp,"%02X"
292                                                                 , opp[i]) <= 0)
293                                                                 goto end;
294                                                         }
295                                                 }
296                                         else
297                                         /* print the normal dump */
298                                                 {
299                                                 if (!nl) 
300                                                         {
301                                                         if (BIO_write(bp,"\n",1) <= 0)
302                                                                 goto end;
303                                                         }
304                                                 if (BIO_dump_indent(bp,
305                                                         (const char *)opp,
306                                                         ((dump == -1 || dump > 
307                                                         os->length)?os->length:dump),
308                                                         dump_indent) <= 0)
309                                                         goto end;
310                                                 nl=1;
311                                                 }
312                                         }
313                                 if (os != NULL)
314                                         {
315                                         M_ASN1_OCTET_STRING_free(os);
316                                         os=NULL;
317                                         }
318                                 }
319                         else if (tag == V_ASN1_INTEGER)
320                                 {
321                                 ASN1_INTEGER *bs;
322                                 int i;
323
324                                 opp=op;
325                                 bs=d2i_ASN1_INTEGER(NULL,&opp,len+hl);
326                                 if (bs != NULL)
327                                         {
328                                         if (BIO_write(bp,":",1) <= 0) goto end;
329                                         if (bs->type == V_ASN1_NEG_INTEGER)
330                                                 if (BIO_write(bp,"-",1) <= 0)
331                                                         goto end;
332                                         for (i=0; i<bs->length; i++)
333                                                 {
334                                                 if (BIO_printf(bp,"%02X",
335                                                         bs->data[i]) <= 0)
336                                                         goto end;
337                                                 }
338                                         if (bs->length == 0)
339                                                 {
340                                                 if (BIO_write(bp,"00",2) <= 0)
341                                                         goto end;
342                                                 }
343                                         }
344                                 else
345                                         {
346                                         if (BIO_write(bp,"BAD INTEGER",11) <= 0)
347                                                 goto end;
348                                         }
349                                 M_ASN1_INTEGER_free(bs);
350                                 }
351                         else if (tag == V_ASN1_ENUMERATED)
352                                 {
353                                 ASN1_ENUMERATED *bs;
354                                 int i;
355
356                                 opp=op;
357                                 bs=d2i_ASN1_ENUMERATED(NULL,&opp,len+hl);
358                                 if (bs != NULL)
359                                         {
360                                         if (BIO_write(bp,":",1) <= 0) goto end;
361                                         if (bs->type == V_ASN1_NEG_ENUMERATED)
362                                                 if (BIO_write(bp,"-",1) <= 0)
363                                                         goto end;
364                                         for (i=0; i<bs->length; i++)
365                                                 {
366                                                 if (BIO_printf(bp,"%02X",
367                                                         bs->data[i]) <= 0)
368                                                         goto end;
369                                                 }
370                                         if (bs->length == 0)
371                                                 {
372                                                 if (BIO_write(bp,"00",2) <= 0)
373                                                         goto end;
374                                                 }
375                                         }
376                                 else
377                                         {
378                                         if (BIO_write(bp,"BAD ENUMERATED",11) <= 0)
379                                                 goto end;
380                                         }
381                                 M_ASN1_ENUMERATED_free(bs);
382                                 }
383                         else if (len > 0 && dump)
384                                 {
385                                 if (!nl) 
386                                         {
387                                         if (BIO_write(bp,"\n",1) <= 0)
388                                                 goto end;
389                                         }
390                                 if (BIO_dump_indent(bp,(const char *)p,
391                                         ((dump == -1 || dump > len)?len:dump),
392                                         dump_indent) <= 0)
393                                         goto end;
394                                 nl=1;
395                                 }
396
397                         if (!nl) 
398                                 {
399                                 if (BIO_write(bp,"\n",1) <= 0) goto end;
400                                 }
401                         p+=len;
402                         if ((tag == V_ASN1_EOC) && (xclass == 0))
403                                 {
404                                 ret=2; /* End of sequence */
405                                 goto end;
406                                 }
407                         }
408                 length-=len;
409                 }
410         ret=1;
411 end:
412         if (o != NULL) ASN1_OBJECT_free(o);
413         if (os != NULL) M_ASN1_OCTET_STRING_free(os);
414         *pp=p;
415         return(ret);
416         }
417
418 const char *ASN1_tag2str(int tag)
419 {
420         static const char * const tag2str[] = {
421          "EOC", "BOOLEAN", "INTEGER", "BIT STRING", "OCTET STRING", /* 0-4 */
422          "NULL", "OBJECT", "OBJECT DESCRIPTOR", "EXTERNAL", "REAL", /* 5-9 */
423          "ENUMERATED", "<ASN1 11>", "UTF8STRING", "<ASN1 13>",      /* 10-13 */
424         "<ASN1 14>", "<ASN1 15>", "SEQUENCE", "SET",                /* 15-17 */
425         "NUMERICSTRING", "PRINTABLESTRING", "T61STRING",            /* 18-20 */
426         "VIDEOTEXSTRING", "IA5STRING", "UTCTIME","GENERALIZEDTIME", /* 21-24 */
427         "GRAPHICSTRING", "VISIBLESTRING", "GENERALSTRING",          /* 25-27 */
428         "UNIVERSALSTRING", "<ASN1 29>", "BMPSTRING"                 /* 28-30 */
429         };
430
431         if((tag == V_ASN1_NEG_INTEGER) || (tag == V_ASN1_NEG_ENUMERATED))
432                                                         tag &= ~0x100;
433
434         if(tag < 0 || tag > 30) return "(unknown)";
435         return tag2str[tag];
436 }
437