openssl/crypto/asn1/asn_moid.c
Pauli a1df06b363 This has been added to avoid the situation where some host ctype.h functions
return true for characters > 127.  I.e. they are allowing extended ASCII
characters through which then cause problems.  E.g. marking superscript '2' as
a number then causes the common (ch - '0') conversion to number to fail
miserably.  Likewise letters with diacritical marks can also cause problems.

If a non-ASCII character set is being used (currently only EBCDIC), it is
adjusted for.

The implementation uses a single table with a bit for each of the defined
classes.  These functions accept an int argument and fail for
values out of range or for characters outside of the ASCII set.  They will
work for both signed and unsigned character inputs.

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4102)
2017-08-22 09:45:25 +10:00

105 lines
2.5 KiB
C

/*
* Copyright 2002-2017 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 "internal/ctype.h"
#include <openssl/crypto.h>
#include "internal/cryptlib.h"
#include <openssl/conf.h>
#include <openssl/x509.h>
#include "internal/asn1_int.h"
#include "internal/objects.h"
/* Simple ASN1 OID module: add all objects in a given section */
static int do_create(const char *value, const char *name);
static int oid_module_init(CONF_IMODULE *md, const CONF *cnf)
{
int i;
const char *oid_section;
STACK_OF(CONF_VALUE) *sktmp;
CONF_VALUE *oval;
oid_section = CONF_imodule_get_value(md);
if ((sktmp = NCONF_get_section(cnf, oid_section)) == NULL) {
ASN1err(ASN1_F_OID_MODULE_INIT, ASN1_R_ERROR_LOADING_SECTION);
return 0;
}
for (i = 0; i < sk_CONF_VALUE_num(sktmp); i++) {
oval = sk_CONF_VALUE_value(sktmp, i);
if (!do_create(oval->value, oval->name)) {
ASN1err(ASN1_F_OID_MODULE_INIT, ASN1_R_ADDING_OBJECT);
return 0;
}
}
return 1;
}
static void oid_module_finish(CONF_IMODULE *md)
{
}
void ASN1_add_oid_module(void)
{
CONF_module_add("oid_section", oid_module_init, oid_module_finish);
}
/*-
* Create an OID based on a name value pair. Accept two formats.
* shortname = 1.2.3.4
* shortname = some long name, 1.2.3.4
*/
static int do_create(const char *value, const char *name)
{
int nid;
ASN1_OBJECT *oid;
const char *ln, *ostr, *p;
char *lntmp;
p = strrchr(value, ',');
if (!p) {
ln = name;
ostr = value;
} else {
ln = NULL;
ostr = p + 1;
if (!*ostr)
return 0;
while (ossl_isspace(*ostr))
ostr++;
}
nid = OBJ_create(ostr, name, ln);
if (nid == NID_undef)
return 0;
if (p) {
ln = value;
while (ossl_isspace(*ln))
ln++;
p--;
while (ossl_isspace(*p)) {
if (p == ln)
return 0;
p--;
}
p++;
lntmp = OPENSSL_malloc((p - ln) + 1);
if (lntmp == NULL)
return 0;
memcpy(lntmp, ln, p - ln);
lntmp[p - ln] = 0;
oid = OBJ_nid2obj(nid);
oid->ln = lntmp;
}
return 1;
}