1 | /* apps/asn1pars.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 | /* A nice addition from Dr Stephen Henson <shenson@bigfoot.com> to |
---|
60 | * add the -strparse option which parses nested binary structures |
---|
61 | */ |
---|
62 | |
---|
63 | #include <stdio.h> |
---|
64 | #include <stdlib.h> |
---|
65 | #include <string.h> |
---|
66 | #include "apps.h" |
---|
67 | #include <openssl/err.h> |
---|
68 | #include <openssl/evp.h> |
---|
69 | #include <openssl/x509.h> |
---|
70 | #include <openssl/pem.h> |
---|
71 | |
---|
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 |
---|
77 | * -oid file - extra oid description file |
---|
78 | */ |
---|
79 | |
---|
80 | #undef PROG |
---|
81 | #define PROG asn1parse_main |
---|
82 | |
---|
83 | int MAIN(int, char **); |
---|
84 | |
---|
85 | int MAIN(int argc, char **argv) |
---|
86 | { |
---|
87 | int i,badops=0,offset=0,ret=1,j; |
---|
88 | unsigned int length=0; |
---|
89 | long num,tmplen; |
---|
90 | BIO *in=NULL,*out=NULL,*b64=NULL, *derout = NULL; |
---|
91 | int informat,indent=0, noout = 0, dump = 0; |
---|
92 | char *infile=NULL,*str=NULL,*prog,*oidfile=NULL, *derfile=NULL; |
---|
93 | unsigned char *tmpbuf; |
---|
94 | BUF_MEM *buf=NULL; |
---|
95 | STACK *osk=NULL; |
---|
96 | ASN1_TYPE *at=NULL; |
---|
97 | |
---|
98 | informat=FORMAT_PEM; |
---|
99 | |
---|
100 | apps_startup(); |
---|
101 | |
---|
102 | if (bio_err == NULL) |
---|
103 | if ((bio_err=BIO_new(BIO_s_file())) != NULL) |
---|
104 | BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); |
---|
105 | |
---|
106 | if (!load_config(bio_err, NULL)) |
---|
107 | goto end; |
---|
108 | |
---|
109 | prog=argv[0]; |
---|
110 | argc--; |
---|
111 | argv++; |
---|
112 | if ((osk=sk_new_null()) == NULL) |
---|
113 | { |
---|
114 | BIO_printf(bio_err,"Memory allocation failure\n"); |
---|
115 | goto end; |
---|
116 | } |
---|
117 | while (argc >= 1) |
---|
118 | { |
---|
119 | if (strcmp(*argv,"-inform") == 0) |
---|
120 | { |
---|
121 | if (--argc < 1) goto bad; |
---|
122 | informat=str2fmt(*(++argv)); |
---|
123 | } |
---|
124 | else if (strcmp(*argv,"-in") == 0) |
---|
125 | { |
---|
126 | if (--argc < 1) goto bad; |
---|
127 | infile= *(++argv); |
---|
128 | } |
---|
129 | else if (strcmp(*argv,"-out") == 0) |
---|
130 | { |
---|
131 | if (--argc < 1) goto bad; |
---|
132 | derfile= *(++argv); |
---|
133 | } |
---|
134 | else if (strcmp(*argv,"-i") == 0) |
---|
135 | { |
---|
136 | indent=1; |
---|
137 | } |
---|
138 | else if (strcmp(*argv,"-noout") == 0) noout = 1; |
---|
139 | else if (strcmp(*argv,"-oid") == 0) |
---|
140 | { |
---|
141 | if (--argc < 1) goto bad; |
---|
142 | oidfile= *(++argv); |
---|
143 | } |
---|
144 | else if (strcmp(*argv,"-offset") == 0) |
---|
145 | { |
---|
146 | if (--argc < 1) goto bad; |
---|
147 | offset= atoi(*(++argv)); |
---|
148 | } |
---|
149 | else if (strcmp(*argv,"-length") == 0) |
---|
150 | { |
---|
151 | if (--argc < 1) goto bad; |
---|
152 | length= atoi(*(++argv)); |
---|
153 | if (length == 0) goto bad; |
---|
154 | } |
---|
155 | else if (strcmp(*argv,"-dump") == 0) |
---|
156 | { |
---|
157 | dump= -1; |
---|
158 | } |
---|
159 | else if (strcmp(*argv,"-dlimit") == 0) |
---|
160 | { |
---|
161 | if (--argc < 1) goto bad; |
---|
162 | dump= atoi(*(++argv)); |
---|
163 | if (dump <= 0) goto bad; |
---|
164 | } |
---|
165 | else if (strcmp(*argv,"-strparse") == 0) |
---|
166 | { |
---|
167 | if (--argc < 1) goto bad; |
---|
168 | sk_push(osk,*(++argv)); |
---|
169 | } |
---|
170 | else |
---|
171 | { |
---|
172 | BIO_printf(bio_err,"unknown option %s\n",*argv); |
---|
173 | badops=1; |
---|
174 | break; |
---|
175 | } |
---|
176 | argc--; |
---|
177 | argv++; |
---|
178 | } |
---|
179 | |
---|
180 | if (badops) |
---|
181 | { |
---|
182 | bad: |
---|
183 | BIO_printf(bio_err,"%s [options] <infile\n",prog); |
---|
184 | BIO_printf(bio_err,"where options are\n"); |
---|
185 | BIO_printf(bio_err," -inform arg input format - one of DER TXT PEM\n"); |
---|
186 | BIO_printf(bio_err," -in arg input file\n"); |
---|
187 | BIO_printf(bio_err," -out arg output file (output format is always DER\n"); |
---|
188 | BIO_printf(bio_err," -noout arg don't produce any output\n"); |
---|
189 | BIO_printf(bio_err," -offset arg offset into file\n"); |
---|
190 | BIO_printf(bio_err," -length arg length of section in file\n"); |
---|
191 | BIO_printf(bio_err," -i indent entries\n"); |
---|
192 | BIO_printf(bio_err," -dump dump unknown data in hex form\n"); |
---|
193 | BIO_printf(bio_err," -dlimit arg dump the first arg bytes of unknown data in hex form\n"); |
---|
194 | BIO_printf(bio_err," -oid file file of extra oid definitions\n"); |
---|
195 | BIO_printf(bio_err," -strparse offset\n"); |
---|
196 | BIO_printf(bio_err," a series of these can be used to 'dig' into multiple\n"); |
---|
197 | BIO_printf(bio_err," ASN1 blob wrappings\n"); |
---|
198 | goto end; |
---|
199 | } |
---|
200 | |
---|
201 | ERR_load_crypto_strings(); |
---|
202 | |
---|
203 | in=BIO_new(BIO_s_file()); |
---|
204 | out=BIO_new(BIO_s_file()); |
---|
205 | if ((in == NULL) || (out == NULL)) |
---|
206 | { |
---|
207 | ERR_print_errors(bio_err); |
---|
208 | goto end; |
---|
209 | } |
---|
210 | BIO_set_fp(out,stdout,BIO_NOCLOSE|BIO_FP_TEXT); |
---|
211 | #ifdef OPENSSL_SYS_VMS |
---|
212 | { |
---|
213 | BIO *tmpbio = BIO_new(BIO_f_linebuffer()); |
---|
214 | out = BIO_push(tmpbio, out); |
---|
215 | } |
---|
216 | #endif |
---|
217 | |
---|
218 | if (oidfile != NULL) |
---|
219 | { |
---|
220 | if (BIO_read_filename(in,oidfile) <= 0) |
---|
221 | { |
---|
222 | BIO_printf(bio_err,"problems opening %s\n",oidfile); |
---|
223 | ERR_print_errors(bio_err); |
---|
224 | goto end; |
---|
225 | } |
---|
226 | OBJ_create_objects(in); |
---|
227 | } |
---|
228 | |
---|
229 | if (infile == NULL) |
---|
230 | BIO_set_fp(in,stdin,BIO_NOCLOSE); |
---|
231 | else |
---|
232 | { |
---|
233 | if (BIO_read_filename(in,infile) <= 0) |
---|
234 | { |
---|
235 | perror(infile); |
---|
236 | goto end; |
---|
237 | } |
---|
238 | } |
---|
239 | |
---|
240 | if (derfile) { |
---|
241 | if(!(derout = BIO_new_file(derfile, "wb"))) { |
---|
242 | BIO_printf(bio_err,"problems opening %s\n",derfile); |
---|
243 | ERR_print_errors(bio_err); |
---|
244 | goto end; |
---|
245 | } |
---|
246 | } |
---|
247 | |
---|
248 | if ((buf=BUF_MEM_new()) == NULL) goto end; |
---|
249 | if (!BUF_MEM_grow(buf,BUFSIZ*8)) goto end; /* Pre-allocate :-) */ |
---|
250 | |
---|
251 | if (informat == FORMAT_PEM) |
---|
252 | { |
---|
253 | BIO *tmp; |
---|
254 | |
---|
255 | if ((b64=BIO_new(BIO_f_base64())) == NULL) |
---|
256 | goto end; |
---|
257 | BIO_push(b64,in); |
---|
258 | tmp=in; |
---|
259 | in=b64; |
---|
260 | b64=tmp; |
---|
261 | } |
---|
262 | |
---|
263 | num=0; |
---|
264 | for (;;) |
---|
265 | { |
---|
266 | if (!BUF_MEM_grow(buf,(int)num+BUFSIZ)) goto end; |
---|
267 | i=BIO_read(in,&(buf->data[num]),BUFSIZ); |
---|
268 | if (i <= 0) break; |
---|
269 | num+=i; |
---|
270 | } |
---|
271 | str=buf->data; |
---|
272 | |
---|
273 | /* If any structs to parse go through in sequence */ |
---|
274 | |
---|
275 | if (sk_num(osk)) |
---|
276 | { |
---|
277 | tmpbuf=(unsigned char *)str; |
---|
278 | tmplen=num; |
---|
279 | for (i=0; i<sk_num(osk); i++) |
---|
280 | { |
---|
281 | ASN1_TYPE *atmp; |
---|
282 | j=atoi(sk_value(osk,i)); |
---|
283 | if (j == 0) |
---|
284 | { |
---|
285 | BIO_printf(bio_err,"'%s' is an invalid number\n",sk_value(osk,i)); |
---|
286 | continue; |
---|
287 | } |
---|
288 | tmpbuf+=j; |
---|
289 | tmplen-=j; |
---|
290 | atmp = at; |
---|
291 | at = d2i_ASN1_TYPE(NULL,&tmpbuf,tmplen); |
---|
292 | ASN1_TYPE_free(atmp); |
---|
293 | if(!at) |
---|
294 | { |
---|
295 | BIO_printf(bio_err,"Error parsing structure\n"); |
---|
296 | ERR_print_errors(bio_err); |
---|
297 | goto end; |
---|
298 | } |
---|
299 | /* hmm... this is a little evil but it works */ |
---|
300 | tmpbuf=at->value.asn1_string->data; |
---|
301 | tmplen=at->value.asn1_string->length; |
---|
302 | } |
---|
303 | str=(char *)tmpbuf; |
---|
304 | num=tmplen; |
---|
305 | } |
---|
306 | |
---|
307 | if (length == 0) length=(unsigned int)num; |
---|
308 | if(derout) { |
---|
309 | if(BIO_write(derout, str + offset, length) != (int)length) { |
---|
310 | BIO_printf(bio_err, "Error writing output\n"); |
---|
311 | ERR_print_errors(bio_err); |
---|
312 | goto end; |
---|
313 | } |
---|
314 | } |
---|
315 | if (!noout && |
---|
316 | !ASN1_parse_dump(out,(unsigned char *)&(str[offset]),length, |
---|
317 | indent,dump)) |
---|
318 | { |
---|
319 | ERR_print_errors(bio_err); |
---|
320 | goto end; |
---|
321 | } |
---|
322 | ret=0; |
---|
323 | end: |
---|
324 | BIO_free(derout); |
---|
325 | if (in != NULL) BIO_free(in); |
---|
326 | if (out != NULL) BIO_free_all(out); |
---|
327 | if (b64 != NULL) BIO_free(b64); |
---|
328 | if (ret != 0) |
---|
329 | ERR_print_errors(bio_err); |
---|
330 | if (buf != NULL) BUF_MEM_free(buf); |
---|
331 | if (at != NULL) ASN1_TYPE_free(at); |
---|
332 | if (osk != NULL) sk_free(osk); |
---|
333 | OBJ_cleanup(); |
---|
334 | apps_shutdown(); |
---|
335 | OPENSSL_EXIT(ret); |
---|
336 | } |
---|
337 | |
---|