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openssl/apps/asn1pars.c
Richard Levitte dab2cd68e7 apps: Don't include progs.h in apps.h 
Everything in apps includes apps.h, because that one declares apps
internal library routines.  However, progs.h doesn't declare library
routines, but rather the main commands and their options, and there's
no reason why the library modules should include it.

So, remove the inclusion of progs.h from apps.h and add that inclusion
in all command source files.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5222)
2018-01-31 23:45:12 +01:00

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/*
* Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (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_ERR = -1, OPT_EOF = 0, OPT_HELP,
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[] = {
{"help", OPT_HELP, '-', "Display this summary"},
{"inform", OPT_INFORM, 'F', "input format - one of DER PEM"},
{"in", OPT_IN, '<', "input file"},
{"out", OPT_OUT, '>', "output file (output format is always DER)"},
{"i", OPT_INDENT, 0, "indents the output"},
{"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"},
{"oid", OPT_OID, '<', "file of extra oid definitions"},
{"dump", OPT_DUMP, 0, "unknown data in hex form"},
{"dlimit", OPT_DLIMIT, 'p',
"dump the first arg bytes of unknown data in hex form"},
{"strparse", OPT_STRPARSE, 's',
"offset; a series of these can be used to 'dig'"},
{OPT_MORE_STR, 0, 0, "into multiple ASN1 blob wrappings"},
{"genstr", OPT_GENSTR, 's', "string to generate ASN1 structure from"},
{"genconf", OPT_GENCONF, 's', "file to generate ASN1 structure from"},
{OPT_MORE_STR, 0, 0, "(-inform will be ignored)"},
{"strictpem", OPT_STRICTPEM, 0,
"do not attempt base64 decode outside PEM markers"},
{"item", OPT_ITEM, 's', "item to parse and print"},
{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, strictpem = 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_PEMDER, &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 = atoi(opt_arg());
break;
case OPT_DUMP:
dump = -1;
break;
case OPT_DLIMIT:
dump = atoi(opt_arg());
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:
strictpem = 1;
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;
}
}
argc = opt_num_rest();
if (argc != 0)
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 (strictpem) {
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;
}
} else {
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(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 = (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 = 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 = 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 != 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);
if (strictpem)
OPENSSL_free(str);
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;
}
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