]> git.ipfire.org Git - thirdparty/openssl.git/blame - apps/asn1pars.c
'passwd' tool.
[thirdparty/openssl.git] / apps / asn1pars.c
CommitLineData
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
6b691a5c 83int 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 {
167bad:
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 174 BIO_printf(bio_err," -offset arg offset into file\n");
657e60fa 175 BIO_printf(bio_err," -length arg length of section in file\n");
d02b48c6 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;
300end:
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