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d02b48c6 | 1 | /* apps/asn1pars.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 | ||
dfeab068 | 59 | /* A nice addition from Dr Stephen Henson <shenson@bigfoot.com> to |
651d0aff | 60 | * add the -strparse option which parses nested binary structures |
dfeab068 RE |
61 | */ |
62 | ||
d02b48c6 RE |
63 | #include <stdio.h> |
64 | #include <stdlib.h> | |
65 | #include <string.h> | |
66 | #include "apps.h" | |
ec577822 BM |
67 | #include <openssl/err.h> |
68 | #include <openssl/evp.h> | |
69 | #include <openssl/x509.h> | |
70 | #include <openssl/pem.h> | |
d02b48c6 | 71 | |
d02b48c6 RE |
72 | /* -inform arg - input format - default PEM (DER or PEM) |
73 | * -in arg - input file - default stdin | |
74 | * -i - indent the details by depth | |
75 | * -offset - where in the file to start | |
76 | * -length - how many bytes to use | |
657e60fa | 77 | * -oid file - extra oid description file |
d02b48c6 RE |
78 | */ |
79 | ||
80 | #undef PROG | |
81 | #define PROG asn1parse_main | |
82 | ||
667ac4ec RE |
83 | int MAIN(int, char **); |
84 | ||
6b691a5c | 85 | int MAIN(int argc, char **argv) |
d02b48c6 | 86 | { |
dfeab068 | 87 | int i,badops=0,offset=0,ret=1,j; |
d02b48c6 | 88 | unsigned int length=0; |
dfeab068 | 89 | long num,tmplen; |
f5eac85e | 90 | BIO *in=NULL,*out=NULL,*b64=NULL, *derout = NULL; |
ca1e465f | 91 | int informat,indent=0, noout = 0, dump = 0; |
f5eac85e | 92 | char *infile=NULL,*str=NULL,*prog,*oidfile=NULL, *derfile=NULL; |
dfeab068 | 93 | unsigned char *tmpbuf; |
d02b48c6 | 94 | BUF_MEM *buf=NULL; |
dfeab068 RE |
95 | STACK *osk=NULL; |
96 | ASN1_TYPE *at=NULL; | |
d02b48c6 | 97 | |
d02b48c6 RE |
98 | informat=FORMAT_PEM; |
99 | ||
100 | apps_startup(); | |
101 | ||
102 | if (bio_err == NULL) | |
103 | if ((bio_err=BIO_new(BIO_s_file())) != NULL) | |
58964a49 | 104 | BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); |
d02b48c6 RE |
105 | |
106 | prog=argv[0]; | |
107 | argc--; | |
108 | argv++; | |
dfeab068 RE |
109 | if ((osk=sk_new_null()) == NULL) |
110 | { | |
26a3a48d | 111 | BIO_printf(bio_err,"Memory allocation failure\n"); |
dfeab068 RE |
112 | goto end; |
113 | } | |
d02b48c6 RE |
114 | while (argc >= 1) |
115 | { | |
116 | if (strcmp(*argv,"-inform") == 0) | |
117 | { | |
118 | if (--argc < 1) goto bad; | |
119 | informat=str2fmt(*(++argv)); | |
120 | } | |
121 | else if (strcmp(*argv,"-in") == 0) | |
122 | { | |
123 | if (--argc < 1) goto bad; | |
124 | infile= *(++argv); | |
125 | } | |
f5eac85e DSH |
126 | else if (strcmp(*argv,"-out") == 0) |
127 | { | |
128 | if (--argc < 1) goto bad; | |
129 | derfile= *(++argv); | |
130 | } | |
d02b48c6 RE |
131 | else if (strcmp(*argv,"-i") == 0) |
132 | { | |
133 | indent=1; | |
134 | } | |
d71c6bc5 | 135 | else if (strcmp(*argv,"-noout") == 0) noout = 1; |
58964a49 RE |
136 | else if (strcmp(*argv,"-oid") == 0) |
137 | { | |
138 | if (--argc < 1) goto bad; | |
139 | oidfile= *(++argv); | |
140 | } | |
d02b48c6 RE |
141 | else if (strcmp(*argv,"-offset") == 0) |
142 | { | |
143 | if (--argc < 1) goto bad; | |
144 | offset= atoi(*(++argv)); | |
145 | } | |
146 | else if (strcmp(*argv,"-length") == 0) | |
147 | { | |
148 | if (--argc < 1) goto bad; | |
149 | length= atoi(*(++argv)); | |
150 | if (length == 0) goto bad; | |
151 | } | |
ca1e465f RL |
152 | else if (strcmp(*argv,"-dump") == 0) |
153 | { | |
154 | dump= -1; | |
155 | } | |
156 | else if (strcmp(*argv,"-dlimit") == 0) | |
157 | { | |
158 | if (--argc < 1) goto bad; | |
159 | dump= atoi(*(++argv)); | |
160 | if (dump <= 0) goto bad; | |
161 | } | |
dfeab068 RE |
162 | else if (strcmp(*argv,"-strparse") == 0) |
163 | { | |
164 | if (--argc < 1) goto bad; | |
165 | sk_push(osk,*(++argv)); | |
166 | } | |
d02b48c6 RE |
167 | else |
168 | { | |
169 | BIO_printf(bio_err,"unknown option %s\n",*argv); | |
170 | badops=1; | |
171 | break; | |
172 | } | |
173 | argc--; | |
174 | argv++; | |
175 | } | |
176 | ||
177 | if (badops) | |
178 | { | |
179 | bad: | |
180 | BIO_printf(bio_err,"%s [options] <infile\n",prog); | |
181 | BIO_printf(bio_err,"where options are\n"); | |
182 | BIO_printf(bio_err," -inform arg input format - one of DER TXT PEM\n"); | |
9fe84296 | 183 | BIO_printf(bio_err," -in arg input file\n"); |
d71c6bc5 DSH |
184 | BIO_printf(bio_err," -out arg output file\n"); |
185 | BIO_printf(bio_err," -noout arg don't produce any output\n"); | |
d02b48c6 | 186 | BIO_printf(bio_err," -offset arg offset into file\n"); |
657e60fa | 187 | BIO_printf(bio_err," -length arg length of section in file\n"); |
d02b48c6 | 188 | BIO_printf(bio_err," -i indent entries\n"); |
ca1e465f RL |
189 | BIO_printf(bio_err," -dump dump unknown data in hex form\n"); |
190 | BIO_printf(bio_err," -dlimit arg dump the first arg bytes of unknown data in hex form\n"); | |
58964a49 | 191 | BIO_printf(bio_err," -oid file file of extra oid definitions\n"); |
dfeab068 RE |
192 | BIO_printf(bio_err," -strparse offset\n"); |
193 | BIO_printf(bio_err," a series of these can be used to 'dig' into multiple\n"); | |
194 | BIO_printf(bio_err," ASN1 blob wrappings\n"); | |
f5eac85e | 195 | BIO_printf(bio_err," -out filename output DER encoding to file\n"); |
d02b48c6 RE |
196 | goto end; |
197 | } | |
198 | ||
199 | ERR_load_crypto_strings(); | |
200 | ||
201 | in=BIO_new(BIO_s_file()); | |
202 | out=BIO_new(BIO_s_file()); | |
203 | if ((in == NULL) || (out == NULL)) | |
204 | { | |
205 | ERR_print_errors(bio_err); | |
206 | goto end; | |
207 | } | |
58964a49 | 208 | BIO_set_fp(out,stdout,BIO_NOCLOSE|BIO_FP_TEXT); |
bc36ee62 | 209 | #ifdef OPENSSL_SYS_VMS |
645749ef RL |
210 | { |
211 | BIO *tmpbio = BIO_new(BIO_f_linebuffer()); | |
212 | out = BIO_push(tmpbio, out); | |
213 | } | |
214 | #endif | |
58964a49 RE |
215 | |
216 | if (oidfile != NULL) | |
217 | { | |
218 | if (BIO_read_filename(in,oidfile) <= 0) | |
219 | { | |
220 | BIO_printf(bio_err,"problems opening %s\n",oidfile); | |
221 | ERR_print_errors(bio_err); | |
222 | goto end; | |
223 | } | |
224 | OBJ_create_objects(in); | |
225 | } | |
226 | ||
d02b48c6 RE |
227 | if (infile == NULL) |
228 | BIO_set_fp(in,stdin,BIO_NOCLOSE); | |
229 | else | |
230 | { | |
231 | if (BIO_read_filename(in,infile) <= 0) | |
232 | { | |
233 | perror(infile); | |
234 | goto end; | |
235 | } | |
236 | } | |
237 | ||
f5eac85e DSH |
238 | if (derfile) { |
239 | if(!(derout = BIO_new_file(derfile, "wb"))) { | |
240 | BIO_printf(bio_err,"problems opening %s\n",derfile); | |
241 | ERR_print_errors(bio_err); | |
242 | goto end; | |
243 | } | |
244 | } | |
245 | ||
d02b48c6 RE |
246 | if ((buf=BUF_MEM_new()) == NULL) goto end; |
247 | if (!BUF_MEM_grow(buf,BUFSIZ*8)) goto end; /* Pre-allocate :-) */ | |
248 | ||
249 | if (informat == FORMAT_PEM) | |
250 | { | |
251 | BIO *tmp; | |
252 | ||
253 | if ((b64=BIO_new(BIO_f_base64())) == NULL) | |
254 | goto end; | |
255 | BIO_push(b64,in); | |
256 | tmp=in; | |
257 | in=b64; | |
258 | b64=tmp; | |
259 | } | |
260 | ||
261 | num=0; | |
262 | for (;;) | |
263 | { | |
264 | if (!BUF_MEM_grow(buf,(int)num+BUFSIZ)) goto end; | |
265 | i=BIO_read(in,&(buf->data[num]),BUFSIZ); | |
266 | if (i <= 0) break; | |
267 | num+=i; | |
268 | } | |
269 | str=buf->data; | |
270 | ||
dfeab068 RE |
271 | /* If any structs to parse go through in sequence */ |
272 | ||
273 | if (sk_num(osk)) | |
274 | { | |
275 | tmpbuf=(unsigned char *)str; | |
276 | tmplen=num; | |
277 | for (i=0; i<sk_num(osk); i++) | |
278 | { | |
f5eac85e | 279 | ASN1_TYPE *atmp; |
dfeab068 RE |
280 | j=atoi(sk_value(osk,i)); |
281 | if (j == 0) | |
282 | { | |
283 | BIO_printf(bio_err,"'%s' is an invalid number\n",sk_value(osk,i)); | |
284 | continue; | |
285 | } | |
286 | tmpbuf+=j; | |
287 | tmplen-=j; | |
f5eac85e DSH |
288 | atmp = at; |
289 | at = d2i_ASN1_TYPE(NULL,&tmpbuf,tmplen); | |
290 | ASN1_TYPE_free(atmp); | |
291 | if(!at) | |
dfeab068 RE |
292 | { |
293 | BIO_printf(bio_err,"Error parsing structure\n"); | |
294 | ERR_print_errors(bio_err); | |
295 | goto end; | |
296 | } | |
297 | /* hmm... this is a little evil but it works */ | |
298 | tmpbuf=at->value.asn1_string->data; | |
299 | tmplen=at->value.asn1_string->length; | |
300 | } | |
301 | str=(char *)tmpbuf; | |
302 | num=tmplen; | |
303 | } | |
304 | ||
d02b48c6 | 305 | if (length == 0) length=(unsigned int)num; |
f5eac85e | 306 | if(derout) { |
a74c55cd | 307 | if(BIO_write(derout, str + offset, length) != (int)length) { |
f5eac85e DSH |
308 | BIO_printf(bio_err, "Error writing output\n"); |
309 | ERR_print_errors(bio_err); | |
310 | goto end; | |
311 | } | |
312 | } | |
d71c6bc5 | 313 | if (!noout && |
ca1e465f RL |
314 | !ASN1_parse_dump(out,(unsigned char *)&(str[offset]),length, |
315 | indent,dump)) | |
d02b48c6 RE |
316 | { |
317 | ERR_print_errors(bio_err); | |
318 | goto end; | |
319 | } | |
320 | ret=0; | |
321 | end: | |
f5eac85e | 322 | BIO_free(derout); |
d02b48c6 | 323 | if (in != NULL) BIO_free(in); |
645749ef | 324 | if (out != NULL) BIO_free_all(out); |
d02b48c6 RE |
325 | if (b64 != NULL) BIO_free(b64); |
326 | if (ret != 0) | |
327 | ERR_print_errors(bio_err); | |
328 | if (buf != NULL) BUF_MEM_free(buf); | |
dfeab068 RE |
329 | if (at != NULL) ASN1_TYPE_free(at); |
330 | if (osk != NULL) sk_free(osk); | |
58964a49 | 331 | OBJ_cleanup(); |
c04f8cf4 | 332 | apps_shutdown(); |
d02b48c6 RE |
333 | EXIT(ret); |
334 | } | |
335 |