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/*
* Copyright 1999-2020 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 "internal/cryptlib.h"
#include <openssl/conf.h>
#include <openssl/asn1.h>
#include <openssl/asn1t.h>
#include <openssl/x509v3.h>
#include "ext_dat.h"
/* Support for Thawte strong extranet extension */
#define SXNET_TEST
static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out,
int indent);
#ifdef SXNET_TEST
static SXNET *sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
STACK_OF(CONF_VALUE) *nval);
#endif
const X509V3_EXT_METHOD v3_sxnet = {
NID_sxnet, X509V3_EXT_MULTILINE, ASN1_ITEM_ref(SXNET),
0, 0, 0, 0,
0, 0,
0,
#ifdef SXNET_TEST
(X509V3_EXT_V2I)sxnet_v2i,
#else
0,
#endif
(X509V3_EXT_I2R)sxnet_i2r,
0,
NULL
};
ASN1_SEQUENCE(SXNETID) = {
ASN1_SIMPLE(SXNETID, zone, ASN1_INTEGER),
ASN1_SIMPLE(SXNETID, user, ASN1_OCTET_STRING)
} ASN1_SEQUENCE_END(SXNETID)
IMPLEMENT_ASN1_FUNCTIONS(SXNETID)
ASN1_SEQUENCE(SXNET) = {
ASN1_SIMPLE(SXNET, version, ASN1_INTEGER),
ASN1_SEQUENCE_OF(SXNET, ids, SXNETID)
} ASN1_SEQUENCE_END(SXNET)
IMPLEMENT_ASN1_FUNCTIONS(SXNET)
static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out,
int indent)
{
int64_t v;
char *tmp;
SXNETID *id;
int i;
/*
* Since we add 1 to the version number to display it, we don't support
* LONG_MAX since that would cause on overflow.
*/
if (!ASN1_INTEGER_get_int64(&v, sx->version)
|| v >= LONG_MAX
|| v < LONG_MIN) {
BIO_printf(out, "%*sVersion: <unsupported>", indent, "");
} else {
long vl = (long)v;
BIO_printf(out, "%*sVersion: %ld (0x%lX)", indent, "", vl + 1, vl);
}
for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {
id = sk_SXNETID_value(sx->ids, i);
tmp = i2s_ASN1_INTEGER(NULL, id->zone);
BIO_printf(out, "\n%*sZone: %s, User: ", indent, "", tmp);
OPENSSL_free(tmp);
ASN1_STRING_print(out, id->user);
}
return 1;
}
#ifdef SXNET_TEST
/*
* NBB: this is used for testing only. It should *not* be used for anything
* else because it will just take static IDs from the configuration file and
* they should really be separate values for each user.
*/
static SXNET *sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
STACK_OF(CONF_VALUE) *nval)
{
CONF_VALUE *cnf;
SXNET *sx = NULL;
int i;
for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
cnf = sk_CONF_VALUE_value(nval, i);
if (!SXNET_add_id_asc(&sx, cnf->name, cnf->value, -1))
return NULL;
}
return sx;
}
#endif
/* Strong Extranet utility functions */
/* Add an id given the zone as an ASCII number */
int SXNET_add_id_asc(SXNET **psx, const char *zone, const char *user, int userlen)
{
ASN1_INTEGER *izone;
if ((izone = s2i_ASN1_INTEGER(NULL, zone)) == NULL) {
ERR_raise(ERR_LIB_X509V3, X509V3_R_ERROR_CONVERTING_ZONE);
return 0;
}
return SXNET_add_id_INTEGER(psx, izone, user, userlen);
}
/* Add an id given the zone as an unsigned long */
int SXNET_add_id_ulong(SXNET **psx, unsigned long lzone, const char *user,
int userlen)
{
ASN1_INTEGER *izone;
if ((izone = ASN1_INTEGER_new()) == NULL
|| !ASN1_INTEGER_set(izone, lzone)) {
ERR_raise(ERR_LIB_X509V3, ERR_R_MALLOC_FAILURE);
ASN1_INTEGER_free(izone);
return 0;
}
return SXNET_add_id_INTEGER(psx, izone, user, userlen);
}
/*
* Add an id given the zone as an ASN1_INTEGER. Note this version uses the
* passed integer and doesn't make a copy so don't free it up afterwards.
*/
int SXNET_add_id_INTEGER(SXNET **psx, ASN1_INTEGER *zone, const char *user,
int userlen)
{
SXNET *sx = NULL;
SXNETID *id = NULL;
if (psx == NULL || zone == NULL || user == NULL) {
ERR_raise(ERR_LIB_X509V3, X509V3_R_INVALID_NULL_ARGUMENT);
return 0;
}
if (userlen == -1)
userlen = strlen(user);
if (userlen > 64) {
ERR_raise(ERR_LIB_X509V3, X509V3_R_USER_TOO_LONG);
return 0;
}
if (*psx == NULL) {
if ((sx = SXNET_new()) == NULL)
goto err;
if (!ASN1_INTEGER_set(sx->version, 0))
goto err;
*psx = sx;
} else
sx = *psx;
if (SXNET_get_id_INTEGER(sx, zone)) {
ERR_raise(ERR_LIB_X509V3, X509V3_R_DUPLICATE_ZONE_ID);
return 0;
}
if ((id = SXNETID_new()) == NULL)
goto err;
if (userlen == -1)
userlen = strlen(user);
if (!ASN1_OCTET_STRING_set(id->user, (const unsigned char *)user, userlen))
goto err;
if (!sk_SXNETID_push(sx->ids, id))
goto err;
id->zone = zone;
return 1;
err:
ERR_raise(ERR_LIB_X509V3, ERR_R_MALLOC_FAILURE);
SXNETID_free(id);
SXNET_free(sx);
*psx = NULL;
return 0;
}
ASN1_OCTET_STRING *SXNET_get_id_asc(SXNET *sx, const char *zone)
{
ASN1_INTEGER *izone;
ASN1_OCTET_STRING *oct;
if ((izone = s2i_ASN1_INTEGER(NULL, zone)) == NULL) {
ERR_raise(ERR_LIB_X509V3, X509V3_R_ERROR_CONVERTING_ZONE);
return NULL;
}
oct = SXNET_get_id_INTEGER(sx, izone);
ASN1_INTEGER_free(izone);
return oct;
}
ASN1_OCTET_STRING *SXNET_get_id_ulong(SXNET *sx, unsigned long lzone)
{
ASN1_INTEGER *izone;
ASN1_OCTET_STRING *oct;
if ((izone = ASN1_INTEGER_new()) == NULL
|| !ASN1_INTEGER_set(izone, lzone)) {
ERR_raise(ERR_LIB_X509V3, ERR_R_MALLOC_FAILURE);
ASN1_INTEGER_free(izone);
return NULL;
}
oct = SXNET_get_id_INTEGER(sx, izone);
ASN1_INTEGER_free(izone);
return oct;
}
ASN1_OCTET_STRING *SXNET_get_id_INTEGER(SXNET *sx, ASN1_INTEGER *zone)
{
SXNETID *id;
int i;
for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {
id = sk_SXNETID_value(sx->ids, i);
if (!ASN1_INTEGER_cmp(id->zone, zone))
return id->user;
}
return NULL;
}
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