1 /* crypto/asn1/asn1_par.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/buffer.h>
62 #include <openssl/objects.h>
63 #include <openssl/asn1.h>
65 static int asn1_print_info(BIO *bp, int tag, int xclass,int constructed,
67 static int asn1_parse2(BIO *bp, unsigned char **pp, long length,
68 int offset, int depth, int indent);
69 static int asn1_print_info(BIO *bp, int tag, int xclass, int constructed,
72 static const char fmt[]="%-18s";
73 static const char fmt2[]="%2d %-15s";
75 const char *p,*p2=NULL;
77 if (constructed & V_ASN1_CONSTRUCTED)
81 if (BIO_write(bp,p,6) < 6) goto err;
84 if (indent > 128) indent=128;
85 memset(str,' ',indent);
86 if (BIO_write(bp,str,indent) < indent) goto err;
90 if ((xclass & V_ASN1_PRIVATE) == V_ASN1_PRIVATE)
91 sprintf(str,"priv [ %d ] ",tag);
92 else if ((xclass & V_ASN1_CONTEXT_SPECIFIC) == V_ASN1_CONTEXT_SPECIFIC)
93 sprintf(str,"cont [ %d ]",tag);
94 else if ((xclass & V_ASN1_APPLICATION) == V_ASN1_APPLICATION)
95 sprintf(str,"appl [ %d ]",tag);
96 else p = ASN1_tag2str(tag);
100 if (BIO_printf(bp,fmt2,tag,p2) <= 0) goto err;
104 if (BIO_printf(bp,fmt,p) <= 0) goto err;
111 int ASN1_parse(BIO *bp, unsigned char *pp, long len, int indent)
113 return(asn1_parse2(bp,&pp,len,0,0,indent));
116 static int asn1_parse2(BIO *bp, unsigned char **pp, long length, int offset,
117 int depth, int indent)
119 unsigned char *p,*ep,*tot,*op,*opp;
121 int tag,xclass,ret=0;
124 ASN1_OCTET_STRING *os=NULL;
125 /* ASN1_BMPSTRING *bmp=NULL;*/
130 while ((p < tot) && (op < p))
133 j=ASN1_get_object(&p,&len,&tag,&xclass,length);
139 if (BIO_write(bp,"Error in encoding\n",18) <= 0)
146 /* if j == 0x21 it is a constructed indefinite length object */
147 if (BIO_printf(bp,"%5ld:",(long)offset+(long)(op- *pp))
150 if (j != (V_ASN1_CONSTRUCTED | 1))
152 if (BIO_printf(bp,"d=%-2d hl=%ld l=%4ld ",
153 depth,(long)hl,len) <= 0)
158 if (BIO_printf(bp,"d=%-2d hl=%ld l=inf ",
159 depth,(long)hl) <= 0)
162 if (!asn1_print_info(bp,tag,xclass,j,(indent)?depth:0))
164 if (j & V_ASN1_CONSTRUCTED)
167 if (BIO_write(bp,"\n",1) <= 0) goto end;
171 "length is greater than %ld\n",length);
175 if ((j == 0x21) && (len == 0))
179 r=asn1_parse2(bp,&p,(long)(tot-p),
180 offset+(p - *pp),depth+1,
182 if (r == 0) { ret=0; goto end; }
183 if ((r == 2) || (p >= tot)) break;
189 r=asn1_parse2(bp,&p,(long)len,
190 offset+(p - *pp),depth+1,
192 if (r == 0) { ret=0; goto end; }
195 else if (xclass != 0)
198 if (BIO_write(bp,"\n",1) <= 0) goto end;
203 if ( (tag == V_ASN1_PRINTABLESTRING) ||
204 (tag == V_ASN1_T61STRING) ||
205 (tag == V_ASN1_IA5STRING) ||
206 (tag == V_ASN1_VISIBLESTRING) ||
207 (tag == V_ASN1_UTCTIME) ||
208 (tag == V_ASN1_GENERALIZEDTIME))
210 if (BIO_write(bp,":",1) <= 0) goto end;
212 BIO_write(bp,(char *)p,(int)len)
216 else if (tag == V_ASN1_OBJECT)
219 if (d2i_ASN1_OBJECT(&o,&opp,len+hl) != NULL)
221 if (BIO_write(bp,":",1) <= 0) goto end;
222 i2a_ASN1_OBJECT(bp,o);
226 if (BIO_write(bp,":BAD OBJECT",11) <= 0)
230 else if (tag == V_ASN1_BOOLEAN)
235 ii=d2i_ASN1_BOOLEAN(NULL,&opp,len+hl);
238 if (BIO_write(bp,"Bad boolean\n",12))
241 BIO_printf(bp,":%d",ii);
243 else if (tag == V_ASN1_BMPSTRING)
245 /* do the BMP thang */
247 else if (tag == V_ASN1_OCTET_STRING)
252 os=d2i_ASN1_OCTET_STRING(NULL,&opp,len+hl);
256 for (i=0; i<os->length; i++)
258 if (( (opp[i] < ' ') &&
268 if (printable && (os->length > 0))
270 if (BIO_write(bp,":",1) <= 0)
272 if (BIO_write(bp,(char *)opp,
276 M_ASN1_OCTET_STRING_free(os);
280 else if (tag == V_ASN1_INTEGER)
286 bs=d2i_ASN1_INTEGER(NULL,&opp,len+hl);
289 if (BIO_write(bp,":",1) <= 0) goto end;
290 if (bs->type == V_ASN1_NEG_INTEGER)
291 if (BIO_write(bp,"-",1) <= 0)
293 for (i=0; i<bs->length; i++)
295 if (BIO_printf(bp,"%02X",
301 if (BIO_write(bp,"00",2) <= 0)
307 if (BIO_write(bp,"BAD INTEGER",11) <= 0)
310 M_ASN1_INTEGER_free(bs);
312 else if (tag == V_ASN1_ENUMERATED)
318 bs=d2i_ASN1_ENUMERATED(NULL,&opp,len+hl);
321 if (BIO_write(bp,":",1) <= 0) goto end;
322 if (bs->type == V_ASN1_NEG_ENUMERATED)
323 if (BIO_write(bp,"-",1) <= 0)
325 for (i=0; i<bs->length; i++)
327 if (BIO_printf(bp,"%02X",
333 if (BIO_write(bp,"00",2) <= 0)
339 if (BIO_write(bp,"BAD ENUMERATED",11) <= 0)
342 M_ASN1_ENUMERATED_free(bs);
347 if (BIO_write(bp,"\n",1) <= 0) goto end;
350 if ((tag == V_ASN1_EOC) && (xclass == 0))
352 ret=2; /* End of sequence */
360 if (o != NULL) ASN1_OBJECT_free(o);
361 if (os != NULL) M_ASN1_OCTET_STRING_free(os);
366 const char *ASN1_tag2str(int tag)
368 const static char *tag2str[] = {
369 "EOC", "BOOLEAN", "INTEGER", "BIT STRING", "OCTET STRING", /* 0-4 */
370 "NULL", "OBJECT", "OBJECT DESCRIPTOR", "EXTERNAL", "REAL", /* 5-9 */
371 "ENUMERATED", "<ASN1 11>", "UTF8STRING", "<ASN1 13>", /* 10-13 */
372 "<ASN1 14>", "<ASN1 15>", "SEQUENCE", "SET", /* 15-17 */
373 "NUMERICSTRING", "PRINTABLESTRING", "T61STRING", /* 18-20 */
374 "VIDEOTEXSTRING", "IA5STRING", "UTCTIME","GENERALIZEDTIME", /* 21-24 */
375 "GRAPHICSTRING", "VISIBLESTRING", "GENERALSTRING", /* 25-27 */
376 "UNIVERSALSTRING", "<ASN1 29>", "BMPSTRING" /* 28-30 */
379 if((tag == V_ASN1_NEG_INTEGER) || (tag == V_ASN1_NEG_ENUMERATED))
382 if(tag < 0 || tag > 30) return "(unknown)";