#include <stdio.h>
#include "cryptlib.h"
#include <openssl/asn1t.h>
#include <openssl/conf.h>
#include <openssl/x509v3.h>
static void *v2i_NAME_CONSTRAINTS(X509V3_EXT_METHOD *method,
X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
static int i2r_NAME_CONSTRAINTS(X509V3_EXT_METHOD *method,
void *a, BIO *bp, int ind);
static int do_i2r_name_constraints(X509V3_EXT_METHOD *method,
STACK_OF(GENERAL_SUBTREE) *trees,
BIO *bp, int ind, char *name);
static int print_nc_ipadd(BIO *bp, ASN1_OCTET_STRING *ip);
const X509V3_EXT_METHOD v3_name_constraints = {
NID_name_constraints, 0,
ASN1_ITEM_ref(NAME_CONSTRAINTS),
0,0,0,0,
0,0,
0, v2i_NAME_CONSTRAINTS,
i2r_NAME_CONSTRAINTS,0,
NULL
};
ASN1_SEQUENCE(GENERAL_SUBTREE) = {
ASN1_SIMPLE(GENERAL_SUBTREE, base, GENERAL_NAME),
ASN1_IMP_OPT(GENERAL_SUBTREE, minimum, ASN1_INTEGER, 0),
ASN1_IMP_OPT(GENERAL_SUBTREE, maximum, ASN1_INTEGER, 1)
} ASN1_SEQUENCE_END(GENERAL_SUBTREE)
ASN1_SEQUENCE(NAME_CONSTRAINTS) = {
ASN1_IMP_SEQUENCE_OF_OPT(NAME_CONSTRAINTS, permittedSubtrees,
GENERAL_SUBTREE, 0),
ASN1_IMP_SEQUENCE_OF_OPT(NAME_CONSTRAINTS, excludedSubtrees,
GENERAL_SUBTREE, 1),
} ASN1_SEQUENCE_END(NAME_CONSTRAINTS)
IMPLEMENT_ASN1_ALLOC_FUNCTIONS(GENERAL_SUBTREE)
IMPLEMENT_ASN1_ALLOC_FUNCTIONS(NAME_CONSTRAINTS)
static void *v2i_NAME_CONSTRAINTS(X509V3_EXT_METHOD *method,
X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
{
int i;
CONF_VALUE tval, *val;
STACK_OF(GENERAL_SUBTREE) **ptree = NULL;
NAME_CONSTRAINTS *ncons = NULL;
GENERAL_SUBTREE *sub = NULL;
ncons = NAME_CONSTRAINTS_new();
if (!ncons)
goto memerr;
for(i = 0; i < sk_CONF_VALUE_num(nval); i++)
{
val = sk_CONF_VALUE_value(nval, i);
if (!strncmp(val->name, "permitted", 9) && val->name[9])
{
ptree = &ncons->permittedSubtrees;
tval.name = val->name + 10;
}
else if (!strncmp(val->name, "excluded", 8) && val->name[8])
{
ptree = &ncons->excludedSubtrees;
tval.name = val->name + 9;
}
else
{
X509V3err(X509V3_F_V2I_NAME_CONSTRAINTS, X509V3_R_INVALID_SYNTAX);
goto err;
}
tval.value = val->value;
sub = GENERAL_SUBTREE_new();
if (!v2i_GENERAL_NAME_ex(sub->base, method, ctx, &tval, 1))
goto err;
if (!*ptree)
*ptree = sk_GENERAL_SUBTREE_new_null();
if (!*ptree || !sk_GENERAL_SUBTREE_push(*ptree, sub))
goto memerr;
sub = NULL;
}
return ncons;
memerr:
X509V3err(X509V3_F_V2I_NAME_CONSTRAINTS, ERR_R_MALLOC_FAILURE);
err:
if (ncons)
NAME_CONSTRAINTS_free(ncons);
if (sub)
GENERAL_SUBTREE_free(sub);
return NULL;
}
static int i2r_NAME_CONSTRAINTS(X509V3_EXT_METHOD *method,
void *a, BIO *bp, int ind)
{
NAME_CONSTRAINTS *ncons = a;
do_i2r_name_constraints(method, ncons->permittedSubtrees,
bp, ind, "Permitted");
do_i2r_name_constraints(method, ncons->excludedSubtrees,
bp, ind, "Excluded");
return 1;
}
static int do_i2r_name_constraints(X509V3_EXT_METHOD *method,
STACK_OF(GENERAL_SUBTREE) *trees,
BIO *bp, int ind, char *name)
{
GENERAL_SUBTREE *tree;
int i;
if (sk_GENERAL_SUBTREE_num(trees) > 0)
BIO_printf(bp, "%*s%s:\n", ind, "", name);
for(i = 0; i < sk_GENERAL_SUBTREE_num(trees); i++)
{
tree = sk_GENERAL_SUBTREE_value(trees, i);
BIO_printf(bp, "%*s", ind + 2, "");
if (tree->base->type == GEN_IPADD)
print_nc_ipadd(bp, tree->base->d.ip);
else
GENERAL_NAME_print(bp, tree->base);
BIO_puts(bp, "\n");
}
return 1;
}
static int print_nc_ipadd(BIO *bp, ASN1_OCTET_STRING *ip)
{
int i, len;
unsigned char *p;
p = ip->data;
len = ip->length;
BIO_puts(bp, "IP:");
if(len == 8)
{
BIO_printf(bp, "%d.%d.%d.%d/%d.%d.%d.%d",
p[0], p[1], p[2], p[3],
p[4], p[5], p[6], p[7]);
}
else if(len == 32)
{
for (i = 0; i < 16; i++)
{
BIO_printf(bp, "%X", p[0] << 8 | p[1]);
p += 2;
if (i == 7)
BIO_puts(bp, "/");
else if (i != 15)
BIO_puts(bp, ":");
}
}
else
BIO_printf(bp, "IP Address:<invalid>");
return 1;
}