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authorcvs2svn <admin@example.com>2002-03-12 00:05:45 +0000
committercvs2svn <admin@example.com>2002-03-12 00:05:45 +0000
commit3779f2f4a8b544a7e4c362915322726b66cff114 (patch)
treeb6d77e66cbfdf6c0d8953fba2917f26f86fa50f6 /src/lib/libcrypto/asn1/asn1_par.c
parentf39945c2b3b0f9e4950384bdb8effdac6eed9199 (diff)
downloadopenbsd-OPENBSD_3_1_BASE.tar.gz
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This commit was manufactured by cvs2git to create tag 'OPENBSD_3_1_BASE'.OPENBSD_3_1_BASE
Diffstat (limited to 'src/lib/libcrypto/asn1/asn1_par.c')
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diff --git a/src/lib/libcrypto/asn1/asn1_par.c b/src/lib/libcrypto/asn1/asn1_par.c
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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
65static int asn1_print_info(BIO *bp, int tag, int xclass,int constructed,
66 int indent);
67static int asn1_parse2(BIO *bp, unsigned char **pp, long length,
68 int offset, int depth, int indent, int dump);
69static int asn1_print_info(BIO *bp, int tag, int xclass, int constructed,
70 int indent)
71 {
72 static const char fmt[]="%-18s";
73 static const char fmt2[]="%2d %-15s";
74 char str[128];
75 const char *p,*p2=NULL;
76
77 if (constructed & V_ASN1_CONSTRUCTED)
78 p="cons: ";
79 else
80 p="prim: ";
81 if (BIO_write(bp,p,6) < 6) goto err;
82 if (indent)
83 {
84 if (indent > 128) indent=128;
85 memset(str,' ',indent);
86 if (BIO_write(bp,str,indent) < indent) goto err;
87 }
88
89 p=str;
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);
97
98 if (p2 != NULL)
99 {
100 if (BIO_printf(bp,fmt2,tag,p2) <= 0) goto err;
101 }
102 else
103 {
104 if (BIO_printf(bp,fmt,p) <= 0) goto err;
105 }
106 return(1);
107err:
108 return(0);
109 }
110
111int ASN1_parse(BIO *bp, unsigned char *pp, long len, int indent)
112 {
113 return(asn1_parse2(bp,&pp,len,0,0,indent,0));
114 }
115
116int ASN1_parse_dump(BIO *bp, unsigned char *pp, long len, int indent, int dump)
117 {
118 return(asn1_parse2(bp,&pp,len,0,0,indent,dump));
119 }
120
121static int asn1_parse2(BIO *bp, unsigned char **pp, long length, int offset,
122 int depth, int indent, int dump)
123 {
124 unsigned char *p,*ep,*tot,*op,*opp;
125 long len;
126 int tag,xclass,ret=0;
127 int nl,hl,j,r;
128 ASN1_OBJECT *o=NULL;
129 ASN1_OCTET_STRING *os=NULL;
130 /* ASN1_BMPSTRING *bmp=NULL;*/
131 int dump_indent;
132
133#if 0
134 dump_indent = indent;
135#else
136 dump_indent = 6; /* Because we know BIO_dump_indent() */
137#endif
138 p= *pp;
139 tot=p+length;
140 op=p-1;
141 while ((p < tot) && (op < p))
142 {
143 op=p;
144 j=ASN1_get_object(&p,&len,&tag,&xclass,length);
145#ifdef LINT
146 j=j;
147#endif
148 if (j & 0x80)
149 {
150 if (BIO_write(bp,"Error in encoding\n",18) <= 0)
151 goto end;
152 ret=0;
153 goto end;
154 }
155 hl=(p-op);
156 length-=hl;
157 /* if j == 0x21 it is a constructed indefinite length object */
158 if (BIO_printf(bp,"%5ld:",(long)offset+(long)(op- *pp))
159 <= 0) goto end;
160
161 if (j != (V_ASN1_CONSTRUCTED | 1))
162 {
163 if (BIO_printf(bp,"d=%-2d hl=%ld l=%4ld ",
164 depth,(long)hl,len) <= 0)
165 goto end;
166 }
167 else
168 {
169 if (BIO_printf(bp,"d=%-2d hl=%ld l=inf ",
170 depth,(long)hl) <= 0)
171 goto end;
172 }
173 if (!asn1_print_info(bp,tag,xclass,j,(indent)?depth:0))
174 goto end;
175 if (j & V_ASN1_CONSTRUCTED)
176 {
177 ep=p+len;
178 if (BIO_write(bp,"\n",1) <= 0) goto end;
179 if (len > length)
180 {
181 BIO_printf(bp,
182 "length is greater than %ld\n",length);
183 ret=0;
184 goto end;
185 }
186 if ((j == 0x21) && (len == 0))
187 {
188 for (;;)
189 {
190 r=asn1_parse2(bp,&p,(long)(tot-p),
191 offset+(p - *pp),depth+1,
192 indent,dump);
193 if (r == 0) { ret=0; goto end; }
194 if ((r == 2) || (p >= tot)) break;
195 }
196 }
197 else
198 while (p < ep)
199 {
200 r=asn1_parse2(bp,&p,(long)len,
201 offset+(p - *pp),depth+1,
202 indent,dump);
203 if (r == 0) { ret=0; goto end; }
204 }
205 }
206 else if (xclass != 0)
207 {
208 p+=len;
209 if (BIO_write(bp,"\n",1) <= 0) goto end;
210 }
211 else
212 {
213 nl=0;
214 if ( (tag == V_ASN1_PRINTABLESTRING) ||
215 (tag == V_ASN1_T61STRING) ||
216 (tag == V_ASN1_IA5STRING) ||
217 (tag == V_ASN1_VISIBLESTRING) ||
218 (tag == V_ASN1_UTCTIME) ||
219 (tag == V_ASN1_GENERALIZEDTIME))
220 {
221 if (BIO_write(bp,":",1) <= 0) goto end;
222 if ((len > 0) &&
223 BIO_write(bp,(char *)p,(int)len)
224 != (int)len)
225 goto end;
226 }
227 else if (tag == V_ASN1_OBJECT)
228 {
229 opp=op;
230 if (d2i_ASN1_OBJECT(&o,&opp,len+hl) != NULL)
231 {
232 if (BIO_write(bp,":",1) <= 0) goto end;
233 i2a_ASN1_OBJECT(bp,o);
234 }
235 else
236 {
237 if (BIO_write(bp,":BAD OBJECT",11) <= 0)
238 goto end;
239 }
240 }
241 else if (tag == V_ASN1_BOOLEAN)
242 {
243 int ii;
244
245 opp=op;
246 ii=d2i_ASN1_BOOLEAN(NULL,&opp,len+hl);
247 if (ii < 0)
248 {
249 if (BIO_write(bp,"Bad boolean\n",12))
250 goto end;
251 }
252 BIO_printf(bp,":%d",ii);
253 }
254 else if (tag == V_ASN1_BMPSTRING)
255 {
256 /* do the BMP thang */
257 }
258 else if (tag == V_ASN1_OCTET_STRING)
259 {
260 int i,printable=1;
261
262 opp=op;
263 os=d2i_ASN1_OCTET_STRING(NULL,&opp,len+hl);
264 if (os != NULL)
265 {
266 opp=os->data;
267 for (i=0; i<os->length; i++)
268 {
269 if (( (opp[i] < ' ') &&
270 (opp[i] != '\n') &&
271 (opp[i] != '\r') &&
272 (opp[i] != '\t')) ||
273 (opp[i] > '~'))
274 {
275 printable=0;
276 break;
277 }
278 }
279 if (printable && (os->length > 0))
280 {
281 if (BIO_write(bp,":",1) <= 0)
282 goto end;
283 if (BIO_write(bp,(char *)opp,
284 os->length) <= 0)
285 goto end;
286 }
287 if (!printable && (os->length > 0)
288 && dump)
289 {
290 if (!nl)
291 {
292 if (BIO_write(bp,"\n",1) <= 0)
293 goto end;
294 }
295 if (BIO_dump_indent(bp,(char *)opp,
296 ((dump == -1 || dump > os->length)?os->length:dump),
297 dump_indent) <= 0)
298 goto end;
299 nl=1;
300 }
301 M_ASN1_OCTET_STRING_free(os);
302 os=NULL;
303 }
304 }
305 else if (tag == V_ASN1_INTEGER)
306 {
307 ASN1_INTEGER *bs;
308 int i;
309
310 opp=op;
311 bs=d2i_ASN1_INTEGER(NULL,&opp,len+hl);
312 if (bs != NULL)
313 {
314 if (BIO_write(bp,":",1) <= 0) goto end;
315 if (bs->type == V_ASN1_NEG_INTEGER)
316 if (BIO_write(bp,"-",1) <= 0)
317 goto end;
318 for (i=0; i<bs->length; i++)
319 {
320 if (BIO_printf(bp,"%02X",
321 bs->data[i]) <= 0)
322 goto end;
323 }
324 if (bs->length == 0)
325 {
326 if (BIO_write(bp,"00",2) <= 0)
327 goto end;
328 }
329 }
330 else
331 {
332 if (BIO_write(bp,"BAD INTEGER",11) <= 0)
333 goto end;
334 }
335 M_ASN1_INTEGER_free(bs);
336 }
337 else if (tag == V_ASN1_ENUMERATED)
338 {
339 ASN1_ENUMERATED *bs;
340 int i;
341
342 opp=op;
343 bs=d2i_ASN1_ENUMERATED(NULL,&opp,len+hl);
344 if (bs != NULL)
345 {
346 if (BIO_write(bp,":",1) <= 0) goto end;
347 if (bs->type == V_ASN1_NEG_ENUMERATED)
348 if (BIO_write(bp,"-",1) <= 0)
349 goto end;
350 for (i=0; i<bs->length; i++)
351 {
352 if (BIO_printf(bp,"%02X",
353 bs->data[i]) <= 0)
354 goto end;
355 }
356 if (bs->length == 0)
357 {
358 if (BIO_write(bp,"00",2) <= 0)
359 goto end;
360 }
361 }
362 else
363 {
364 if (BIO_write(bp,"BAD ENUMERATED",11) <= 0)
365 goto end;
366 }
367 M_ASN1_ENUMERATED_free(bs);
368 }
369 else if (len > 0 && dump)
370 {
371 if (!nl)
372 {
373 if (BIO_write(bp,"\n",1) <= 0)
374 goto end;
375 }
376 if (BIO_dump_indent(bp,(char *)p,
377 ((dump == -1 || dump > len)?len:dump),
378 dump_indent) <= 0)
379 goto end;
380 nl=1;
381 }
382
383 if (!nl)
384 {
385 if (BIO_write(bp,"\n",1) <= 0) goto end;
386 }
387 p+=len;
388 if ((tag == V_ASN1_EOC) && (xclass == 0))
389 {
390 ret=2; /* End of sequence */
391 goto end;
392 }
393 }
394 length-=len;
395 }
396 ret=1;
397end:
398 if (o != NULL) ASN1_OBJECT_free(o);
399 if (os != NULL) M_ASN1_OCTET_STRING_free(os);
400 *pp=p;
401 return(ret);
402 }
403
404const char *ASN1_tag2str(int tag)
405{
406 const static char *tag2str[] = {
407 "EOC", "BOOLEAN", "INTEGER", "BIT STRING", "OCTET STRING", /* 0-4 */
408 "NULL", "OBJECT", "OBJECT DESCRIPTOR", "EXTERNAL", "REAL", /* 5-9 */
409 "ENUMERATED", "<ASN1 11>", "UTF8STRING", "<ASN1 13>", /* 10-13 */
410 "<ASN1 14>", "<ASN1 15>", "SEQUENCE", "SET", /* 15-17 */
411 "NUMERICSTRING", "PRINTABLESTRING", "T61STRING", /* 18-20 */
412 "VIDEOTEXSTRING", "IA5STRING", "UTCTIME","GENERALIZEDTIME", /* 21-24 */
413 "GRAPHICSTRING", "VISIBLESTRING", "GENERALSTRING", /* 25-27 */
414 "UNIVERSALSTRING", "<ASN1 29>", "BMPSTRING" /* 28-30 */
415 };
416
417 if((tag == V_ASN1_NEG_INTEGER) || (tag == V_ASN1_NEG_ENUMERATED))
418 tag &= ~0x100;
419
420 if(tag < 0 || tag > 30) return "(unknown)";
421 return tag2str[tag];
422}
423
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