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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 | |
58964a49 | 77 | * -oid file - extra oid decription file |
d02b48c6 RE |
78 | */ |
79 | ||
80 | #undef PROG | |
81 | #define PROG asn1parse_main | |
82 | ||
6b691a5c | 83 | int MAIN(int argc, char **argv) |
d02b48c6 | 84 | { |
dfeab068 | 85 | int i,badops=0,offset=0,ret=1,j; |
d02b48c6 | 86 | unsigned int length=0; |
dfeab068 | 87 | long num,tmplen; |
f5eac85e | 88 | BIO *in=NULL,*out=NULL,*b64=NULL, *derout = NULL; |
d71c6bc5 | 89 | int informat,indent=0, noout = 0; |
f5eac85e | 90 | char *infile=NULL,*str=NULL,*prog,*oidfile=NULL, *derfile=NULL; |
dfeab068 | 91 | unsigned char *tmpbuf; |
d02b48c6 | 92 | BUF_MEM *buf=NULL; |
dfeab068 RE |
93 | STACK *osk=NULL; |
94 | ASN1_TYPE *at=NULL; | |
d02b48c6 | 95 | |
d02b48c6 RE |
96 | informat=FORMAT_PEM; |
97 | ||
98 | apps_startup(); | |
99 | ||
100 | if (bio_err == NULL) | |
101 | if ((bio_err=BIO_new(BIO_s_file())) != NULL) | |
58964a49 | 102 | BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); |
d02b48c6 RE |
103 | |
104 | prog=argv[0]; | |
105 | argc--; | |
106 | argv++; | |
dfeab068 RE |
107 | if ((osk=sk_new_null()) == NULL) |
108 | { | |
109 | BIO_printf(bio_err,"Malloc failure\n"); | |
110 | goto end; | |
111 | } | |
d02b48c6 RE |
112 | while (argc >= 1) |
113 | { | |
114 | if (strcmp(*argv,"-inform") == 0) | |
115 | { | |
116 | if (--argc < 1) goto bad; | |
117 | informat=str2fmt(*(++argv)); | |
118 | } | |
119 | else if (strcmp(*argv,"-in") == 0) | |
120 | { | |
121 | if (--argc < 1) goto bad; | |
122 | infile= *(++argv); | |
123 | } | |
f5eac85e DSH |
124 | else if (strcmp(*argv,"-out") == 0) |
125 | { | |
126 | if (--argc < 1) goto bad; | |
127 | derfile= *(++argv); | |
128 | } | |
d02b48c6 RE |
129 | else if (strcmp(*argv,"-i") == 0) |
130 | { | |
131 | indent=1; | |
132 | } | |
d71c6bc5 | 133 | else if (strcmp(*argv,"-noout") == 0) noout = 1; |
58964a49 RE |
134 | else if (strcmp(*argv,"-oid") == 0) |
135 | { | |
136 | if (--argc < 1) goto bad; | |
137 | oidfile= *(++argv); | |
138 | } | |
d02b48c6 RE |
139 | else if (strcmp(*argv,"-offset") == 0) |
140 | { | |
141 | if (--argc < 1) goto bad; | |
142 | offset= atoi(*(++argv)); | |
143 | } | |
144 | else if (strcmp(*argv,"-length") == 0) | |
145 | { | |
146 | if (--argc < 1) goto bad; | |
147 | length= atoi(*(++argv)); | |
148 | if (length == 0) goto bad; | |
149 | } | |
dfeab068 RE |
150 | else if (strcmp(*argv,"-strparse") == 0) |
151 | { | |
152 | if (--argc < 1) goto bad; | |
153 | sk_push(osk,*(++argv)); | |
154 | } | |
d02b48c6 RE |
155 | else |
156 | { | |
157 | BIO_printf(bio_err,"unknown option %s\n",*argv); | |
158 | badops=1; | |
159 | break; | |
160 | } | |
161 | argc--; | |
162 | argv++; | |
163 | } | |
164 | ||
165 | if (badops) | |
166 | { | |
167 | bad: | |
168 | BIO_printf(bio_err,"%s [options] <infile\n",prog); | |
169 | BIO_printf(bio_err,"where options are\n"); | |
170 | BIO_printf(bio_err," -inform arg input format - one of DER TXT PEM\n"); | |
9fe84296 | 171 | BIO_printf(bio_err," -in arg input file\n"); |
d71c6bc5 DSH |
172 | BIO_printf(bio_err," -out arg output file\n"); |
173 | BIO_printf(bio_err," -noout arg don't produce any output\n"); | |
d02b48c6 RE |
174 | BIO_printf(bio_err," -offset arg offset into file\n"); |
175 | BIO_printf(bio_err," -length arg lenth of section in file\n"); | |
176 | BIO_printf(bio_err," -i indent entries\n"); | |
58964a49 | 177 | BIO_printf(bio_err," -oid file file of extra oid definitions\n"); |
dfeab068 RE |
178 | BIO_printf(bio_err," -strparse offset\n"); |
179 | BIO_printf(bio_err," a series of these can be used to 'dig' into multiple\n"); | |
180 | BIO_printf(bio_err," ASN1 blob wrappings\n"); | |
f5eac85e | 181 | BIO_printf(bio_err," -out filename output DER encoding to file\n"); |
d02b48c6 RE |
182 | goto end; |
183 | } | |
184 | ||
185 | ERR_load_crypto_strings(); | |
186 | ||
187 | in=BIO_new(BIO_s_file()); | |
188 | out=BIO_new(BIO_s_file()); | |
189 | if ((in == NULL) || (out == NULL)) | |
190 | { | |
191 | ERR_print_errors(bio_err); | |
192 | goto end; | |
193 | } | |
58964a49 RE |
194 | BIO_set_fp(out,stdout,BIO_NOCLOSE|BIO_FP_TEXT); |
195 | ||
196 | if (oidfile != NULL) | |
197 | { | |
198 | if (BIO_read_filename(in,oidfile) <= 0) | |
199 | { | |
200 | BIO_printf(bio_err,"problems opening %s\n",oidfile); | |
201 | ERR_print_errors(bio_err); | |
202 | goto end; | |
203 | } | |
204 | OBJ_create_objects(in); | |
205 | } | |
206 | ||
d02b48c6 RE |
207 | if (infile == NULL) |
208 | BIO_set_fp(in,stdin,BIO_NOCLOSE); | |
209 | else | |
210 | { | |
211 | if (BIO_read_filename(in,infile) <= 0) | |
212 | { | |
213 | perror(infile); | |
214 | goto end; | |
215 | } | |
216 | } | |
217 | ||
f5eac85e DSH |
218 | if (derfile) { |
219 | if(!(derout = BIO_new_file(derfile, "wb"))) { | |
220 | BIO_printf(bio_err,"problems opening %s\n",derfile); | |
221 | ERR_print_errors(bio_err); | |
222 | goto end; | |
223 | } | |
224 | } | |
225 | ||
d02b48c6 RE |
226 | if ((buf=BUF_MEM_new()) == NULL) goto end; |
227 | if (!BUF_MEM_grow(buf,BUFSIZ*8)) goto end; /* Pre-allocate :-) */ | |
228 | ||
229 | if (informat == FORMAT_PEM) | |
230 | { | |
231 | BIO *tmp; | |
232 | ||
233 | if ((b64=BIO_new(BIO_f_base64())) == NULL) | |
234 | goto end; | |
235 | BIO_push(b64,in); | |
236 | tmp=in; | |
237 | in=b64; | |
238 | b64=tmp; | |
239 | } | |
240 | ||
241 | num=0; | |
242 | for (;;) | |
243 | { | |
244 | if (!BUF_MEM_grow(buf,(int)num+BUFSIZ)) goto end; | |
245 | i=BIO_read(in,&(buf->data[num]),BUFSIZ); | |
246 | if (i <= 0) break; | |
247 | num+=i; | |
248 | } | |
249 | str=buf->data; | |
250 | ||
dfeab068 RE |
251 | /* If any structs to parse go through in sequence */ |
252 | ||
253 | if (sk_num(osk)) | |
254 | { | |
255 | tmpbuf=(unsigned char *)str; | |
256 | tmplen=num; | |
257 | for (i=0; i<sk_num(osk); i++) | |
258 | { | |
f5eac85e | 259 | ASN1_TYPE *atmp; |
dfeab068 RE |
260 | j=atoi(sk_value(osk,i)); |
261 | if (j == 0) | |
262 | { | |
263 | BIO_printf(bio_err,"'%s' is an invalid number\n",sk_value(osk,i)); | |
264 | continue; | |
265 | } | |
266 | tmpbuf+=j; | |
267 | tmplen-=j; | |
f5eac85e DSH |
268 | atmp = at; |
269 | at = d2i_ASN1_TYPE(NULL,&tmpbuf,tmplen); | |
270 | ASN1_TYPE_free(atmp); | |
271 | if(!at) | |
dfeab068 RE |
272 | { |
273 | BIO_printf(bio_err,"Error parsing structure\n"); | |
274 | ERR_print_errors(bio_err); | |
275 | goto end; | |
276 | } | |
277 | /* hmm... this is a little evil but it works */ | |
278 | tmpbuf=at->value.asn1_string->data; | |
279 | tmplen=at->value.asn1_string->length; | |
280 | } | |
281 | str=(char *)tmpbuf; | |
282 | num=tmplen; | |
283 | } | |
284 | ||
d02b48c6 | 285 | if (length == 0) length=(unsigned int)num; |
f5eac85e | 286 | if(derout) { |
a74c55cd | 287 | if(BIO_write(derout, str + offset, length) != (int)length) { |
f5eac85e DSH |
288 | BIO_printf(bio_err, "Error writing output\n"); |
289 | ERR_print_errors(bio_err); | |
290 | goto end; | |
291 | } | |
292 | } | |
d71c6bc5 DSH |
293 | if (!noout && |
294 | !ASN1_parse(out,(unsigned char *)&(str[offset]),length,indent)) | |
d02b48c6 RE |
295 | { |
296 | ERR_print_errors(bio_err); | |
297 | goto end; | |
298 | } | |
299 | ret=0; | |
300 | end: | |
f5eac85e | 301 | BIO_free(derout); |
d02b48c6 RE |
302 | if (in != NULL) BIO_free(in); |
303 | if (out != NULL) BIO_free(out); | |
304 | if (b64 != NULL) BIO_free(b64); | |
305 | if (ret != 0) | |
306 | ERR_print_errors(bio_err); | |
307 | if (buf != NULL) BUF_MEM_free(buf); | |
dfeab068 RE |
308 | if (at != NULL) ASN1_TYPE_free(at); |
309 | if (osk != NULL) sk_free(osk); | |
58964a49 | 310 | OBJ_cleanup(); |
d02b48c6 RE |
311 | EXIT(ret); |
312 | } | |
313 |