431 lines
14 KiB
C
431 lines
14 KiB
C
/* apps/asn1pars.c */
|
|
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
|
|
* All rights reserved.
|
|
*
|
|
* This package is an SSL implementation written
|
|
* by Eric Young (eay@cryptsoft.com).
|
|
* The implementation was written so as to conform with Netscapes SSL.
|
|
*
|
|
* This library is free for commercial and non-commercial use as long as
|
|
* the following conditions are aheared to. The following conditions
|
|
* apply to all code found in this distribution, be it the RC4, RSA,
|
|
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
|
|
* included with this distribution is covered by the same copyright terms
|
|
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
|
|
*
|
|
* Copyright remains Eric Young's, and as such any Copyright notices in
|
|
* the code are not to be removed.
|
|
* If this package is used in a product, Eric Young should be given attribution
|
|
* as the author of the parts of the library used.
|
|
* This can be in the form of a textual message at program startup or
|
|
* in documentation (online or textual) provided with the package.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* "This product includes cryptographic software written by
|
|
* Eric Young (eay@cryptsoft.com)"
|
|
* The word 'cryptographic' can be left out if the rouines from the library
|
|
* being used are not cryptographic related :-).
|
|
* 4. If you include any Windows specific code (or a derivative thereof) from
|
|
* the apps directory (application code) you must include an acknowledgement:
|
|
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* The licence and distribution terms for any publically available version or
|
|
* derivative of this code cannot be changed. i.e. this code cannot simply be
|
|
* copied and put under another distribution licence
|
|
* [including the GNU Public Licence.]
|
|
*/
|
|
|
|
/*
|
|
* A nice addition from Dr Stephen Henson <steve@openssl.org> to add the
|
|
* -strparse option which parses nested binary structures
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "apps.h"
|
|
#include <openssl/err.h>
|
|
#include <openssl/evp.h>
|
|
#include <openssl/x509.h>
|
|
#include <openssl/pem.h>
|
|
|
|
/*-
|
|
* -inform arg - input format - default PEM (DER or PEM)
|
|
* -in arg - input file - default stdin
|
|
* -i - indent the details by depth
|
|
* -offset - where in the file to start
|
|
* -length - how many bytes to use
|
|
* -oid file - extra oid description file
|
|
*/
|
|
|
|
#undef PROG
|
|
#define PROG asn1parse_main
|
|
|
|
int MAIN(int, char **);
|
|
|
|
static int do_generate(BIO *bio, char *genstr, char *genconf, BUF_MEM *buf);
|
|
|
|
int MAIN(int argc, char **argv)
|
|
{
|
|
int i, badops = 0, offset = 0, ret = 1, j;
|
|
unsigned int length = 0;
|
|
long num, tmplen;
|
|
BIO *in = NULL, *out = NULL, *b64 = NULL, *derout = NULL;
|
|
int informat, indent = 0, noout = 0, dump = 0;
|
|
char *infile = NULL, *str = NULL, *prog, *oidfile = NULL, *derfile = NULL;
|
|
char *genstr = NULL, *genconf = NULL;
|
|
unsigned char *tmpbuf;
|
|
const unsigned char *ctmpbuf;
|
|
BUF_MEM *buf = NULL;
|
|
STACK_OF(OPENSSL_STRING) *osk = NULL;
|
|
ASN1_TYPE *at = NULL;
|
|
|
|
informat = FORMAT_PEM;
|
|
|
|
apps_startup();
|
|
|
|
if (bio_err == NULL)
|
|
if ((bio_err = BIO_new(BIO_s_file())) != NULL)
|
|
BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
|
|
|
|
if (!load_config(bio_err, NULL))
|
|
goto end;
|
|
|
|
prog = argv[0];
|
|
argc--;
|
|
argv++;
|
|
if ((osk = sk_OPENSSL_STRING_new_null()) == NULL) {
|
|
BIO_printf(bio_err, "Memory allocation failure\n");
|
|
goto end;
|
|
}
|
|
while (argc >= 1) {
|
|
if (strcmp(*argv, "-inform") == 0) {
|
|
if (--argc < 1)
|
|
goto bad;
|
|
informat = str2fmt(*(++argv));
|
|
} else if (strcmp(*argv, "-in") == 0) {
|
|
if (--argc < 1)
|
|
goto bad;
|
|
infile = *(++argv);
|
|
} else if (strcmp(*argv, "-out") == 0) {
|
|
if (--argc < 1)
|
|
goto bad;
|
|
derfile = *(++argv);
|
|
} else if (strcmp(*argv, "-i") == 0) {
|
|
indent = 1;
|
|
} else if (strcmp(*argv, "-noout") == 0)
|
|
noout = 1;
|
|
else if (strcmp(*argv, "-oid") == 0) {
|
|
if (--argc < 1)
|
|
goto bad;
|
|
oidfile = *(++argv);
|
|
} else if (strcmp(*argv, "-offset") == 0) {
|
|
if (--argc < 1)
|
|
goto bad;
|
|
offset = atoi(*(++argv));
|
|
} else if (strcmp(*argv, "-length") == 0) {
|
|
if (--argc < 1)
|
|
goto bad;
|
|
length = atoi(*(++argv));
|
|
if (length == 0)
|
|
goto bad;
|
|
} else if (strcmp(*argv, "-dump") == 0) {
|
|
dump = -1;
|
|
} else if (strcmp(*argv, "-dlimit") == 0) {
|
|
if (--argc < 1)
|
|
goto bad;
|
|
dump = atoi(*(++argv));
|
|
if (dump <= 0)
|
|
goto bad;
|
|
} else if (strcmp(*argv, "-strparse") == 0) {
|
|
if (--argc < 1)
|
|
goto bad;
|
|
sk_OPENSSL_STRING_push(osk, *(++argv));
|
|
} else if (strcmp(*argv, "-genstr") == 0) {
|
|
if (--argc < 1)
|
|
goto bad;
|
|
genstr = *(++argv);
|
|
} else if (strcmp(*argv, "-genconf") == 0) {
|
|
if (--argc < 1)
|
|
goto bad;
|
|
genconf = *(++argv);
|
|
} else {
|
|
BIO_printf(bio_err, "unknown option %s\n", *argv);
|
|
badops = 1;
|
|
break;
|
|
}
|
|
argc--;
|
|
argv++;
|
|
}
|
|
|
|
if (badops) {
|
|
bad:
|
|
BIO_printf(bio_err, "%s [options] <infile\n", prog);
|
|
BIO_printf(bio_err, "where options are\n");
|
|
BIO_printf(bio_err, " -inform arg input format - one of DER PEM\n");
|
|
BIO_printf(bio_err, " -in arg input file\n");
|
|
BIO_printf(bio_err,
|
|
" -out arg output file (output format is always DER\n");
|
|
BIO_printf(bio_err, " -noout arg don't produce any output\n");
|
|
BIO_printf(bio_err, " -offset arg offset into file\n");
|
|
BIO_printf(bio_err, " -length arg length of section in file\n");
|
|
BIO_printf(bio_err, " -i indent entries\n");
|
|
BIO_printf(bio_err, " -dump dump unknown data in hex form\n");
|
|
BIO_printf(bio_err,
|
|
" -dlimit arg dump the first arg bytes of unknown data in hex form\n");
|
|
BIO_printf(bio_err, " -oid file file of extra oid definitions\n");
|
|
BIO_printf(bio_err, " -strparse offset\n");
|
|
BIO_printf(bio_err,
|
|
" a series of these can be used to 'dig' into multiple\n");
|
|
BIO_printf(bio_err, " ASN1 blob wrappings\n");
|
|
BIO_printf(bio_err,
|
|
" -genstr str string to generate ASN1 structure from\n");
|
|
BIO_printf(bio_err,
|
|
" -genconf file file to generate ASN1 structure from\n");
|
|
goto end;
|
|
}
|
|
|
|
ERR_load_crypto_strings();
|
|
|
|
in = BIO_new(BIO_s_file());
|
|
out = BIO_new(BIO_s_file());
|
|
if ((in == NULL) || (out == NULL)) {
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT);
|
|
#ifdef OPENSSL_SYS_VMS
|
|
{
|
|
BIO *tmpbio = BIO_new(BIO_f_linebuffer());
|
|
out = BIO_push(tmpbio, out);
|
|
}
|
|
#endif
|
|
|
|
if (oidfile != NULL) {
|
|
if (BIO_read_filename(in, oidfile) <= 0) {
|
|
BIO_printf(bio_err, "problems opening %s\n", oidfile);
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
OBJ_create_objects(in);
|
|
}
|
|
|
|
if (infile == NULL)
|
|
BIO_set_fp(in, stdin, BIO_NOCLOSE);
|
|
else {
|
|
if (BIO_read_filename(in, infile) <= 0) {
|
|
perror(infile);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (derfile) {
|
|
if (!(derout = BIO_new_file(derfile, "wb"))) {
|
|
BIO_printf(bio_err, "problems opening %s\n", derfile);
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if ((buf = BUF_MEM_new()) == NULL)
|
|
goto end;
|
|
if (!BUF_MEM_grow(buf, BUFSIZ * 8))
|
|
goto end; /* Pre-allocate :-) */
|
|
|
|
if (genstr || genconf) {
|
|
num = do_generate(bio_err, genstr, genconf, buf);
|
|
if (num < 0) {
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
else {
|
|
|
|
if (informat == FORMAT_PEM) {
|
|
BIO *tmp;
|
|
|
|
if ((b64 = BIO_new(BIO_f_base64())) == NULL)
|
|
goto end;
|
|
BIO_push(b64, in);
|
|
tmp = in;
|
|
in = b64;
|
|
b64 = tmp;
|
|
}
|
|
|
|
num = 0;
|
|
for (;;) {
|
|
if (!BUF_MEM_grow(buf, (int)num + BUFSIZ))
|
|
goto end;
|
|
i = BIO_read(in, &(buf->data[num]), BUFSIZ);
|
|
if (i <= 0)
|
|
break;
|
|
num += i;
|
|
}
|
|
}
|
|
str = buf->data;
|
|
|
|
/* If any structs to parse go through in sequence */
|
|
|
|
if (sk_OPENSSL_STRING_num(osk)) {
|
|
tmpbuf = (unsigned char *)str;
|
|
tmplen = num;
|
|
for (i = 0; i < sk_OPENSSL_STRING_num(osk); i++) {
|
|
ASN1_TYPE *atmp;
|
|
int typ;
|
|
j = atoi(sk_OPENSSL_STRING_value(osk, i));
|
|
if (j == 0) {
|
|
BIO_printf(bio_err, "'%s' is an invalid number\n",
|
|
sk_OPENSSL_STRING_value(osk, i));
|
|
continue;
|
|
}
|
|
tmpbuf += j;
|
|
tmplen -= j;
|
|
atmp = at;
|
|
ctmpbuf = tmpbuf;
|
|
at = d2i_ASN1_TYPE(NULL, &ctmpbuf, tmplen);
|
|
ASN1_TYPE_free(atmp);
|
|
if (!at) {
|
|
BIO_printf(bio_err, "Error parsing structure\n");
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
typ = ASN1_TYPE_get(at);
|
|
if ((typ == V_ASN1_OBJECT)
|
|
|| (typ == V_ASN1_BOOLEAN)
|
|
|| (typ == V_ASN1_NULL)) {
|
|
BIO_printf(bio_err, "Can't parse %s type\n", ASN1_tag2str(typ));
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
/* hmm... this is a little evil but it works */
|
|
tmpbuf = at->value.asn1_string->data;
|
|
tmplen = at->value.asn1_string->length;
|
|
}
|
|
str = (char *)tmpbuf;
|
|
num = tmplen;
|
|
}
|
|
|
|
if (offset >= num) {
|
|
BIO_printf(bio_err, "Error: offset too large\n");
|
|
goto end;
|
|
}
|
|
|
|
num -= offset;
|
|
|
|
if ((length == 0) || ((long)length > num))
|
|
length = (unsigned int)num;
|
|
if (derout) {
|
|
if (BIO_write(derout, str + offset, length) != (int)length) {
|
|
BIO_printf(bio_err, "Error writing output\n");
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
}
|
|
if (!noout &&
|
|
!ASN1_parse_dump(out, (unsigned char *)&(str[offset]), length,
|
|
indent, dump)) {
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
ret = 0;
|
|
end:
|
|
BIO_free(derout);
|
|
if (in != NULL)
|
|
BIO_free(in);
|
|
if (out != NULL)
|
|
BIO_free_all(out);
|
|
if (b64 != NULL)
|
|
BIO_free(b64);
|
|
if (ret != 0)
|
|
ERR_print_errors(bio_err);
|
|
if (buf != NULL)
|
|
BUF_MEM_free(buf);
|
|
if (at != NULL)
|
|
ASN1_TYPE_free(at);
|
|
if (osk != NULL)
|
|
sk_OPENSSL_STRING_free(osk);
|
|
OBJ_cleanup();
|
|
apps_shutdown();
|
|
OPENSSL_EXIT(ret);
|
|
}
|
|
|
|
static int do_generate(BIO *bio, char *genstr, char *genconf, BUF_MEM *buf)
|
|
{
|
|
CONF *cnf = NULL;
|
|
int len;
|
|
long errline = 0;
|
|
unsigned char *p;
|
|
ASN1_TYPE *atyp = NULL;
|
|
|
|
if (genconf) {
|
|
cnf = NCONF_new(NULL);
|
|
if (!NCONF_load(cnf, genconf, &errline))
|
|
goto conferr;
|
|
if (!genstr)
|
|
genstr = NCONF_get_string(cnf, "default", "asn1");
|
|
if (!genstr) {
|
|
BIO_printf(bio, "Can't find 'asn1' in '%s'\n", genconf);
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
atyp = ASN1_generate_nconf(genstr, cnf);
|
|
NCONF_free(cnf);
|
|
cnf = NULL;
|
|
|
|
if (!atyp)
|
|
return -1;
|
|
|
|
len = i2d_ASN1_TYPE(atyp, NULL);
|
|
|
|
if (len <= 0)
|
|
goto err;
|
|
|
|
if (!BUF_MEM_grow(buf, len))
|
|
goto err;
|
|
|
|
p = (unsigned char *)buf->data;
|
|
|
|
i2d_ASN1_TYPE(atyp, &p);
|
|
|
|
ASN1_TYPE_free(atyp);
|
|
return len;
|
|
|
|
conferr:
|
|
|
|
if (errline > 0)
|
|
BIO_printf(bio, "Error on line %ld of config file '%s'\n",
|
|
errline, genconf);
|
|
else
|
|
BIO_printf(bio, "Error loading config file '%s'\n", genconf);
|
|
|
|
err:
|
|
NCONF_free(cnf);
|
|
ASN1_TYPE_free(atyp);
|
|
|
|
return -1;
|
|
|
|
}
|