mirror of
https://github.com/openssl/openssl.git
synced 2024-12-03 05:41:46 +08:00
34df960a75
The asn1parse command now supports three different input formats: openssl asn1parse -inform PEM|DER|B64 PEM: base64 encoded data enclosed by PEM markers (RFC7462) DER: der encoded binary data B64: raw base64 encoded data The PEM input format is the default format. It is equivalent to the former `-strictpem` option which is now marked obsolete and kept for backward compatibility only. The B64 is equivalent to the former default input format of the asn1parse command (without `-strictpem`) Fixes #7317 Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com> Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from https://github.com/openssl/openssl/pull/7320)
362 lines
10 KiB
C
362 lines
10 KiB
C
/*
|
|
* Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "apps.h"
|
|
#include "progs.h"
|
|
#include <openssl/err.h>
|
|
#include <openssl/evp.h>
|
|
#include <openssl/x509.h>
|
|
#include <openssl/pem.h>
|
|
#include <openssl/asn1t.h>
|
|
|
|
typedef enum OPTION_choice {
|
|
OPT_COMMON,
|
|
OPT_INFORM, OPT_IN, OPT_OUT, OPT_INDENT, OPT_NOOUT,
|
|
OPT_OID, OPT_OFFSET, OPT_LENGTH, OPT_DUMP, OPT_DLIMIT,
|
|
OPT_STRPARSE, OPT_GENSTR, OPT_GENCONF, OPT_STRICTPEM,
|
|
OPT_ITEM
|
|
} OPTION_CHOICE;
|
|
|
|
const OPTIONS asn1parse_options[] = {
|
|
OPT_SECTION("General"),
|
|
{"help", OPT_HELP, '-', "Display this summary"},
|
|
{"oid", OPT_OID, '<', "file of extra oid definitions"},
|
|
|
|
OPT_SECTION("I/O"),
|
|
{"inform", OPT_INFORM, 'A', "input format - one of DER PEM B64"},
|
|
{"in", OPT_IN, '<', "input file"},
|
|
{"out", OPT_OUT, '>', "output file (output format is always DER)"},
|
|
{"noout", OPT_NOOUT, 0, "do not produce any output"},
|
|
{"offset", OPT_OFFSET, 'p', "offset into file"},
|
|
{"length", OPT_LENGTH, 'p', "length of section in file"},
|
|
{"strparse", OPT_STRPARSE, 'p',
|
|
"offset; a series of these can be used to 'dig'"},
|
|
{"genstr", OPT_GENSTR, 's', "string to generate ASN1 structure from"},
|
|
{OPT_MORE_STR, 0, 0, "into multiple ASN1 blob wrappings"},
|
|
{"genconf", OPT_GENCONF, 's', "file to generate ASN1 structure from"},
|
|
{"strictpem", OPT_STRICTPEM, 0,
|
|
"equivalent to '-inform pem' (obsolete)"},
|
|
{"item", OPT_ITEM, 's', "item to parse and print"},
|
|
{OPT_MORE_STR, 0, 0, "(-inform will be ignored)"},
|
|
|
|
OPT_SECTION("Formatting"),
|
|
{"i", OPT_INDENT, 0, "indents the output"},
|
|
{"dump", OPT_DUMP, 0, "unknown data in hex form"},
|
|
{"dlimit", OPT_DLIMIT, 'p',
|
|
"dump the first arg bytes of unknown data in hex form"},
|
|
{NULL}
|
|
};
|
|
|
|
static int do_generate(char *genstr, const char *genconf, BUF_MEM *buf);
|
|
|
|
int asn1parse_main(int argc, char **argv)
|
|
{
|
|
ASN1_TYPE *at = NULL;
|
|
BIO *in = NULL, *b64 = NULL, *derout = NULL;
|
|
BUF_MEM *buf = NULL;
|
|
STACK_OF(OPENSSL_STRING) *osk = NULL;
|
|
char *genstr = NULL, *genconf = NULL;
|
|
char *infile = NULL, *oidfile = NULL, *derfile = NULL;
|
|
unsigned char *str = NULL;
|
|
char *name = NULL, *header = NULL, *prog;
|
|
const unsigned char *ctmpbuf;
|
|
int indent = 0, noout = 0, dump = 0, informat = FORMAT_PEM;
|
|
int offset = 0, ret = 1, i, j;
|
|
long num, tmplen;
|
|
unsigned char *tmpbuf;
|
|
unsigned int length = 0;
|
|
OPTION_CHOICE o;
|
|
const ASN1_ITEM *it = NULL;
|
|
|
|
prog = opt_init(argc, argv, asn1parse_options);
|
|
|
|
if ((osk = sk_OPENSSL_STRING_new_null()) == NULL) {
|
|
BIO_printf(bio_err, "%s: Memory allocation failure\n", prog);
|
|
goto end;
|
|
}
|
|
|
|
while ((o = opt_next()) != OPT_EOF) {
|
|
switch (o) {
|
|
case OPT_EOF:
|
|
case OPT_ERR:
|
|
opthelp:
|
|
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
|
|
goto end;
|
|
case OPT_HELP:
|
|
opt_help(asn1parse_options);
|
|
ret = 0;
|
|
goto end;
|
|
case OPT_INFORM:
|
|
if (!opt_format(opt_arg(), OPT_FMT_ASN1, &informat))
|
|
goto opthelp;
|
|
break;
|
|
case OPT_IN:
|
|
infile = opt_arg();
|
|
break;
|
|
case OPT_OUT:
|
|
derfile = opt_arg();
|
|
break;
|
|
case OPT_INDENT:
|
|
indent = 1;
|
|
break;
|
|
case OPT_NOOUT:
|
|
noout = 1;
|
|
break;
|
|
case OPT_OID:
|
|
oidfile = opt_arg();
|
|
break;
|
|
case OPT_OFFSET:
|
|
offset = strtol(opt_arg(), NULL, 0);
|
|
break;
|
|
case OPT_LENGTH:
|
|
length = strtol(opt_arg(), NULL, 0);
|
|
break;
|
|
case OPT_DUMP:
|
|
dump = -1;
|
|
break;
|
|
case OPT_DLIMIT:
|
|
dump = strtol(opt_arg(), NULL, 0);
|
|
break;
|
|
case OPT_STRPARSE:
|
|
sk_OPENSSL_STRING_push(osk, opt_arg());
|
|
break;
|
|
case OPT_GENSTR:
|
|
genstr = opt_arg();
|
|
break;
|
|
case OPT_GENCONF:
|
|
genconf = opt_arg();
|
|
break;
|
|
case OPT_STRICTPEM:
|
|
/* accepted for backward compatibility */
|
|
informat = FORMAT_PEM;
|
|
break;
|
|
case OPT_ITEM:
|
|
it = ASN1_ITEM_lookup(opt_arg());
|
|
if (it == NULL) {
|
|
size_t tmp;
|
|
|
|
BIO_printf(bio_err, "Unknown item name %s\n", opt_arg());
|
|
BIO_puts(bio_err, "Supported types:\n");
|
|
for (tmp = 0;; tmp++) {
|
|
it = ASN1_ITEM_get(tmp);
|
|
if (it == NULL)
|
|
break;
|
|
BIO_printf(bio_err, " %s\n", it->sname);
|
|
}
|
|
goto end;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* No extra args. */
|
|
if (!opt_check_rest_arg(NULL))
|
|
goto opthelp;
|
|
|
|
if (oidfile != NULL) {
|
|
in = bio_open_default(oidfile, 'r', FORMAT_TEXT);
|
|
if (in == NULL)
|
|
goto end;
|
|
OBJ_create_objects(in);
|
|
BIO_free(in);
|
|
}
|
|
|
|
if ((in = bio_open_default(infile, 'r', informat)) == NULL)
|
|
goto end;
|
|
|
|
if (derfile && (derout = bio_open_default(derfile, 'w', FORMAT_ASN1)) == NULL)
|
|
goto end;
|
|
|
|
if ((buf = BUF_MEM_new()) == NULL)
|
|
goto end;
|
|
if (informat == FORMAT_PEM) {
|
|
if (PEM_read_bio(in, &name, &header, &str, &num) != 1) {
|
|
BIO_printf(bio_err, "Error reading PEM file\n");
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
buf->data = (char *)str;
|
|
buf->length = buf->max = num;
|
|
} else {
|
|
if (!BUF_MEM_grow(buf, BUFSIZ * 8))
|
|
goto end; /* Pre-allocate :-) */
|
|
|
|
if (genstr || genconf) {
|
|
num = do_generate(genstr, genconf, buf);
|
|
if (num < 0) {
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
} else {
|
|
|
|
if (informat == FORMAT_BASE64) {
|
|
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, num + BUFSIZ))
|
|
goto end;
|
|
i = BIO_read(in, &(buf->data[num]), BUFSIZ);
|
|
if (i <= 0)
|
|
break;
|
|
num += i;
|
|
}
|
|
}
|
|
str = (unsigned char *)buf->data;
|
|
|
|
}
|
|
|
|
/* If any structs to parse go through in sequence */
|
|
|
|
if (sk_OPENSSL_STRING_num(osk)) {
|
|
tmpbuf = str;
|
|
tmplen = num;
|
|
for (i = 0; i < sk_OPENSSL_STRING_num(osk); i++) {
|
|
ASN1_TYPE *atmp;
|
|
int typ;
|
|
j = strtol(sk_OPENSSL_STRING_value(osk, i), NULL, 0);
|
|
if (j <= 0 || j >= tmplen) {
|
|
BIO_printf(bio_err, "'%s' is out of range\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 = tmpbuf;
|
|
num = tmplen;
|
|
}
|
|
|
|
if (offset < 0 || offset >= num) {
|
|
BIO_printf(bio_err, "Error: offset out of range\n");
|
|
goto end;
|
|
}
|
|
|
|
num -= offset;
|
|
|
|
if (length == 0 || length > (unsigned int)num)
|
|
length = (unsigned int)num;
|
|
if (derout != NULL) {
|
|
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) {
|
|
const unsigned char *p = str + offset;
|
|
|
|
if (it != NULL) {
|
|
ASN1_VALUE *value = ASN1_item_d2i(NULL, &p, length, it);
|
|
if (value == NULL) {
|
|
BIO_printf(bio_err, "Error parsing item %s\n", it->sname);
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
ASN1_item_print(bio_out, value, 0, it, NULL);
|
|
ASN1_item_free(value, it);
|
|
} else {
|
|
if (!ASN1_parse_dump(bio_out, p, length, indent, dump)) {
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
}
|
|
}
|
|
ret = 0;
|
|
end:
|
|
BIO_free(derout);
|
|
BIO_free(in);
|
|
BIO_free(b64);
|
|
if (ret != 0)
|
|
ERR_print_errors(bio_err);
|
|
BUF_MEM_free(buf);
|
|
OPENSSL_free(name);
|
|
OPENSSL_free(header);
|
|
ASN1_TYPE_free(at);
|
|
sk_OPENSSL_STRING_free(osk);
|
|
return ret;
|
|
}
|
|
|
|
static int do_generate(char *genstr, const char *genconf, BUF_MEM *buf)
|
|
{
|
|
CONF *cnf = NULL;
|
|
int len;
|
|
unsigned char *p;
|
|
ASN1_TYPE *atyp = NULL;
|
|
|
|
if (genconf != NULL) {
|
|
if ((cnf = app_load_config(genconf)) == NULL)
|
|
goto err;
|
|
if (genstr == NULL)
|
|
genstr = NCONF_get_string(cnf, "default", "asn1");
|
|
if (genstr == NULL) {
|
|
BIO_printf(bio_err, "Can't find 'asn1' in '%s'\n", genconf);
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
atyp = ASN1_generate_nconf(genstr, cnf);
|
|
NCONF_free(cnf);
|
|
cnf = NULL;
|
|
|
|
if (atyp == NULL)
|
|
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;
|
|
|
|
err:
|
|
NCONF_free(cnf);
|
|
ASN1_TYPE_free(atyp);
|
|
return -1;
|
|
}
|