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d02b48c6 | 1 | /* crypto/asn1/asn1_par.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
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 "buffer.h" | |
62 | #include "objects.h" | |
63 | #include "x509.h" | |
64 | ||
65 | #ifndef NOPROTO | |
66 | static int asn1_print_info(BIO *bp, int tag, int xclass,int constructed, | |
67 | int indent); | |
68 | static int asn1_parse2(BIO *bp, unsigned char **pp, long length, | |
69 | int offset, int depth, int indent); | |
70 | #else | |
71 | static int asn1_print_info(); | |
72 | static int asn1_parse2(); | |
73 | #endif | |
74 | ||
75 | static int asn1_print_info(bp, tag, xclass, constructed,indent) | |
76 | BIO *bp; | |
77 | int tag; | |
78 | int xclass; | |
79 | int constructed; | |
80 | int indent; | |
81 | { | |
82 | static char *fmt="%-18s"; | |
83 | static char *fmt2="%2d %-15s"; | |
84 | char *p,str[128],*p2=NULL; | |
85 | ||
86 | if (constructed & V_ASN1_CONSTRUCTED) | |
87 | p="cons: "; | |
88 | else | |
89 | p="prim: "; | |
90 | if (BIO_write(bp,p,6) < 6) goto err; | |
91 | if (indent) | |
92 | { | |
93 | if (indent > 128) indent=128; | |
94 | memset(str,' ',indent); | |
95 | if (BIO_write(bp,str,indent) < indent) goto err; | |
96 | } | |
97 | ||
98 | p=str; | |
99 | if ((xclass & V_ASN1_PRIVATE) == V_ASN1_PRIVATE) | |
100 | sprintf(str,"priv [ %d ] ",tag); | |
101 | else if ((xclass & V_ASN1_CONTEXT_SPECIFIC) == V_ASN1_CONTEXT_SPECIFIC) | |
102 | sprintf(str,"cont [ %d ]",tag); | |
103 | else if ((xclass & V_ASN1_APPLICATION) == V_ASN1_APPLICATION) | |
104 | sprintf(str,"appl [ %d ]",tag); | |
105 | else if ((tag == V_ASN1_EOC) /* && (xclass == V_ASN1_UNIVERSAL) */) | |
106 | p="EOC"; | |
107 | else if (tag == V_ASN1_BOOLEAN) | |
108 | p="BOOLEAN"; | |
109 | else if (tag == V_ASN1_INTEGER) | |
110 | p="INTEGER"; | |
111 | else if (tag == V_ASN1_BIT_STRING) | |
112 | p="BIT STRING"; | |
113 | else if (tag == V_ASN1_OCTET_STRING) | |
114 | p="OCTET STRING"; | |
115 | else if (tag == V_ASN1_NULL) | |
116 | p="NULL"; | |
117 | else if (tag == V_ASN1_OBJECT) | |
118 | p="OBJECT"; | |
119 | else if (tag == V_ASN1_SEQUENCE) | |
120 | p="SEQUENCE"; | |
121 | else if (tag == V_ASN1_SET) | |
122 | p="SET"; | |
123 | else if (tag == V_ASN1_PRINTABLESTRING) | |
124 | p="PRINTABLESTRING"; | |
125 | else if (tag == V_ASN1_T61STRING) | |
126 | p="T61STRING"; | |
127 | else if (tag == V_ASN1_IA5STRING) | |
128 | p="IA5STRING"; | |
129 | else if (tag == V_ASN1_UTCTIME) | |
130 | p="UTCTIME"; | |
131 | ||
132 | /* extras */ | |
133 | else if (tag == V_ASN1_NUMERICSTRING) | |
134 | p="NUMERICSTRING"; | |
135 | else if (tag == V_ASN1_VIDEOTEXSTRING) | |
136 | p="VIDEOTEXSTRING"; | |
137 | else if (tag == V_ASN1_GENERALIZEDTIME) | |
138 | p="GENERALIZEDTIME"; | |
139 | else if (tag == V_ASN1_GRAPHICSTRING) | |
140 | p="GRAPHICSTRING"; | |
141 | else if (tag == V_ASN1_ISO64STRING) | |
142 | p="ISO64STRING"; | |
143 | else if (tag == V_ASN1_GENERALSTRING) | |
144 | p="GENERALSTRING"; | |
145 | else if (tag == V_ASN1_UNIVERSALSTRING) | |
146 | p="UNIVERSALSTRING"; | |
58964a49 RE |
147 | else if (tag == V_ASN1_BMPSTRING) |
148 | p="BMPSTRING"; | |
d02b48c6 RE |
149 | else |
150 | p2="(unknown)"; | |
151 | ||
152 | if (p2 != NULL) | |
153 | { | |
154 | if (BIO_printf(bp,fmt2,tag,p2) <= 0) goto err; | |
155 | } | |
156 | else | |
157 | { | |
158 | if (BIO_printf(bp,fmt,p) <= 0) goto err; | |
159 | } | |
160 | return(1); | |
161 | err: | |
162 | return(0); | |
163 | } | |
164 | ||
165 | int ASN1_parse(bp, pp, len, indent) | |
166 | BIO *bp; | |
167 | unsigned char *pp; | |
168 | long len; | |
169 | int indent; | |
170 | { | |
171 | return(asn1_parse2(bp,&pp,len,0,0,indent)); | |
172 | } | |
173 | ||
174 | static int asn1_parse2(bp, pp, length, offset, depth, indent) | |
175 | BIO *bp; | |
176 | unsigned char **pp; | |
177 | long length; | |
178 | int offset; | |
179 | int depth; | |
180 | int indent; | |
181 | { | |
182 | unsigned char *p,*ep,*tot,*op,*opp; | |
183 | long len; | |
184 | int tag,xclass,ret=0; | |
185 | int nl,hl,j,r; | |
186 | ASN1_OBJECT *o=NULL; | |
187 | ASN1_OCTET_STRING *os=NULL; | |
58964a49 | 188 | /* ASN1_BMPSTRING *bmp=NULL;*/ |
d02b48c6 RE |
189 | |
190 | p= *pp; | |
191 | tot=p+length; | |
192 | op=p-1; | |
193 | while ((p < tot) && (op < p)) | |
194 | { | |
195 | op=p; | |
196 | j=ASN1_get_object(&p,&len,&tag,&xclass,length); | |
197 | #ifdef LINT | |
198 | j=j; | |
199 | #endif | |
200 | if (j & 0x80) | |
201 | { | |
202 | if (BIO_write(bp,"Error in encoding\n",18) <= 0) | |
203 | goto end; | |
204 | ret=0; | |
205 | goto end; | |
206 | } | |
207 | hl=(p-op); | |
208 | length-=hl; | |
209 | /* if j == 0x21 it is a constructed indefinite length object */ | |
210 | if (BIO_printf(bp,"%5ld:",(long)offset+(long)(op- *pp)) | |
211 | <= 0) goto end; | |
212 | ||
213 | if (j != (V_ASN1_CONSTRUCTED | 1)) | |
214 | { | |
215 | if (BIO_printf(bp,"d=%-2d hl=%ld l=%4ld ", | |
216 | depth,(long)hl,len) <= 0) | |
217 | goto end; | |
218 | } | |
219 | else | |
220 | { | |
221 | if (BIO_printf(bp,"d=%-2d hl=%ld l=inf ", | |
222 | depth,(long)hl) <= 0) | |
223 | goto end; | |
224 | } | |
225 | if (!asn1_print_info(bp,tag,xclass,j,(indent)?depth:0)) | |
226 | goto end; | |
227 | if (j & V_ASN1_CONSTRUCTED) | |
228 | { | |
229 | ep=p+len; | |
230 | if (BIO_write(bp,"\n",1) <= 0) goto end; | |
231 | if (len > length) | |
232 | { | |
233 | BIO_printf(bp, | |
234 | "length is greater than %ld\n",length); | |
235 | ret=0; | |
236 | goto end; | |
237 | } | |
238 | if ((j == 0x21) && (len == 0)) | |
239 | { | |
240 | for (;;) | |
241 | { | |
242 | r=asn1_parse2(bp,&p,(long)(tot-p), | |
243 | offset+(p - *pp),depth+1, | |
244 | indent); | |
245 | if (r == 0) { ret=0; goto end; } | |
246 | if ((r == 2) || (p >= tot)) break; | |
247 | } | |
248 | } | |
249 | else | |
250 | while (p < ep) | |
251 | { | |
252 | r=asn1_parse2(bp,&p,(long)len, | |
253 | offset+(p - *pp),depth+1, | |
254 | indent); | |
255 | if (r == 0) { ret=0; goto end; } | |
256 | } | |
257 | } | |
258 | else if (xclass != 0) | |
259 | { | |
260 | p+=len; | |
261 | if (BIO_write(bp,"\n",1) <= 0) goto end; | |
262 | } | |
263 | else | |
264 | { | |
265 | nl=0; | |
266 | if ( (tag == V_ASN1_PRINTABLESTRING) || | |
267 | (tag == V_ASN1_T61STRING) || | |
268 | (tag == V_ASN1_IA5STRING) || | |
dfeab068 RE |
269 | (tag == V_ASN1_UTCTIME) || |
270 | (tag == V_ASN1_GENERALIZEDTIME)) | |
d02b48c6 RE |
271 | { |
272 | if (BIO_write(bp,":",1) <= 0) goto end; | |
273 | if ((len > 0) && | |
274 | BIO_write(bp,(char *)p,(int)len) | |
275 | != (int)len) | |
276 | goto end; | |
277 | } | |
278 | else if (tag == V_ASN1_OBJECT) | |
279 | { | |
280 | opp=op; | |
281 | if (d2i_ASN1_OBJECT(&o,&opp,len+hl) != NULL) | |
282 | { | |
283 | if (BIO_write(bp,":",1) <= 0) goto end; | |
284 | i2a_ASN1_OBJECT(bp,o); | |
285 | } | |
286 | else | |
287 | { | |
288 | if (BIO_write(bp,":BAD OBJECT",11) <= 0) | |
289 | goto end; | |
290 | } | |
291 | } | |
292 | else if (tag == V_ASN1_BOOLEAN) | |
293 | { | |
294 | int ii; | |
295 | ||
296 | opp=op; | |
297 | ii=d2i_ASN1_BOOLEAN(NULL,&opp,len+hl); | |
298 | if (ii < 0) | |
299 | { | |
300 | if (BIO_write(bp,"Bad boolean\n",12)) | |
301 | goto end; | |
302 | } | |
303 | BIO_printf(bp,":%d",ii); | |
304 | } | |
58964a49 RE |
305 | else if (tag == V_ASN1_BMPSTRING) |
306 | { | |
307 | /* do the BMP thang */ | |
308 | } | |
d02b48c6 RE |
309 | else if (tag == V_ASN1_OCTET_STRING) |
310 | { | |
311 | int i,printable=1; | |
312 | ||
313 | opp=op; | |
314 | os=d2i_ASN1_OCTET_STRING(NULL,&opp,len+hl); | |
315 | if (os != NULL) | |
316 | { | |
317 | opp=os->data; | |
318 | for (i=0; i<os->length; i++) | |
319 | { | |
320 | if (( (opp[i] < ' ') && | |
321 | (opp[i] != '\n') && | |
322 | (opp[i] != '\r') && | |
323 | (opp[i] != '\t')) || | |
324 | (opp[i] > '~')) | |
325 | { | |
326 | printable=0; | |
327 | break; | |
328 | } | |
329 | } | |
330 | if (printable && (os->length > 0)) | |
331 | { | |
332 | if (BIO_write(bp,":",1) <= 0) | |
333 | goto end; | |
334 | if (BIO_write(bp,(char *)opp, | |
335 | os->length) <= 0) | |
336 | goto end; | |
337 | } | |
338 | ASN1_OCTET_STRING_free(os); | |
339 | os=NULL; | |
340 | } | |
341 | } | |
342 | else if (tag == V_ASN1_INTEGER) | |
343 | { | |
344 | ASN1_INTEGER *bs; | |
345 | int i; | |
346 | ||
347 | opp=op; | |
348 | bs=d2i_ASN1_INTEGER(NULL,&opp,len+hl); | |
349 | if (bs != NULL) | |
350 | { | |
351 | if (BIO_write(bp,":",1) <= 0) goto end; | |
352 | if (bs->type == V_ASN1_NEG_INTEGER) | |
353 | if (BIO_write(bp,"-",1) <= 0) | |
354 | goto end; | |
355 | for (i=0; i<bs->length; i++) | |
356 | { | |
357 | if (BIO_printf(bp,"%02X", | |
358 | bs->data[i]) <= 0) | |
359 | goto end; | |
360 | } | |
361 | if (bs->length == 0) | |
362 | { | |
363 | if (BIO_write(bp,"00",2) <= 0) | |
364 | goto end; | |
365 | } | |
366 | } | |
367 | else | |
368 | { | |
369 | if (BIO_write(bp,"BAD INTEGER",11) <= 0) | |
370 | goto end; | |
371 | } | |
372 | ASN1_INTEGER_free(bs); | |
373 | } | |
374 | ||
375 | if (!nl) | |
376 | { | |
377 | if (BIO_write(bp,"\n",1) <= 0) goto end; | |
378 | } | |
379 | p+=len; | |
380 | if ((tag == V_ASN1_EOC) && (xclass == 0)) | |
381 | { | |
382 | ret=2; /* End of sequence */ | |
383 | goto end; | |
384 | } | |
385 | } | |
386 | length-=len; | |
387 | } | |
388 | ret=1; | |
389 | end: | |
390 | if (o != NULL) ASN1_OBJECT_free(o); | |
391 | if (os != NULL) ASN1_OCTET_STRING_free(os); | |
392 | *pp=p; | |
393 | return(ret); | |
394 | } |