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/*
* Copyright 1995-2020 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/safestack.h>
#include <openssl/asn1.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
#include "x509_local.h"
int X509v3_get_ext_count(const STACK_OF(X509_EXTENSION) *x)
{
if (x == NULL)
return 0;
return sk_X509_EXTENSION_num(x);
}
int X509v3_get_ext_by_NID(const STACK_OF(X509_EXTENSION) *x, int nid,
int lastpos)
{
ASN1_OBJECT *obj;
obj = OBJ_nid2obj(nid);
if (obj == NULL)
return -2;
return X509v3_get_ext_by_OBJ(x, obj, lastpos);
}
int X509v3_get_ext_by_OBJ(const STACK_OF(X509_EXTENSION) *sk,
const ASN1_OBJECT *obj, int lastpos)
{
int n;
X509_EXTENSION *ex;
if (sk == NULL)
return -1;
lastpos++;
if (lastpos < 0)
lastpos = 0;
n = sk_X509_EXTENSION_num(sk);
for (; lastpos < n; lastpos++) {
ex = sk_X509_EXTENSION_value(sk, lastpos);
if (OBJ_cmp(ex->object, obj) == 0)
return lastpos;
}
return -1;
}
int X509v3_get_ext_by_critical(const STACK_OF(X509_EXTENSION) *sk, int crit,
int lastpos)
{
int n;
X509_EXTENSION *ex;
if (sk == NULL)
return -1;
lastpos++;
if (lastpos < 0)
lastpos = 0;
n = sk_X509_EXTENSION_num(sk);
for (; lastpos < n; lastpos++) {
ex = sk_X509_EXTENSION_value(sk, lastpos);
if (((ex->critical > 0) && crit) || ((ex->critical <= 0) && !crit))
return lastpos;
}
return -1;
}
X509_EXTENSION *X509v3_get_ext(const STACK_OF(X509_EXTENSION) *x, int loc)
{
if (x == NULL || sk_X509_EXTENSION_num(x) <= loc || loc < 0)
return NULL;
else
return sk_X509_EXTENSION_value(x, loc);
}
X509_EXTENSION *X509v3_delete_ext(STACK_OF(X509_EXTENSION) *x, int loc)
{
X509_EXTENSION *ret;
if (x == NULL || sk_X509_EXTENSION_num(x) <= loc || loc < 0)
return NULL;
ret = sk_X509_EXTENSION_delete(x, loc);
return ret;
}
STACK_OF(X509_EXTENSION) *X509v3_add_ext(STACK_OF(X509_EXTENSION) **x,
X509_EXTENSION *ex, int loc)
{
X509_EXTENSION *new_ex = NULL;
int n;
STACK_OF(X509_EXTENSION) *sk = NULL;
if (x == NULL) {
ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
goto err2;
}
if (*x == NULL) {
if ((sk = sk_X509_EXTENSION_new_null()) == NULL)
goto err;
} else
sk = *x;
n = sk_X509_EXTENSION_num(sk);
if (loc > n)
loc = n;
else if (loc < 0)
loc = n;
if ((new_ex = X509_EXTENSION_dup(ex)) == NULL)
goto err2;
if (!sk_X509_EXTENSION_insert(sk, new_ex, loc))
goto err;
if (*x == NULL)
*x = sk;
return sk;
err:
ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE);
err2:
X509_EXTENSION_free(new_ex);
if (x != NULL && *x == NULL)
sk_X509_EXTENSION_free(sk);
return NULL;
}
X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex, int nid,
int crit,
ASN1_OCTET_STRING *data)
{
ASN1_OBJECT *obj;
X509_EXTENSION *ret;
obj = OBJ_nid2obj(nid);
if (obj == NULL) {
ERR_raise(ERR_LIB_X509, X509_R_UNKNOWN_NID);
return NULL;
}
ret = X509_EXTENSION_create_by_OBJ(ex, obj, crit, data);
if (ret == NULL)
ASN1_OBJECT_free(obj);
return ret;
}
X509_EXTENSION *X509_EXTENSION_create_by_OBJ(X509_EXTENSION **ex,
const ASN1_OBJECT *obj, int crit,
ASN1_OCTET_STRING *data)
{
X509_EXTENSION *ret;
if ((ex == NULL) || (*ex == NULL)) {
if ((ret = X509_EXTENSION_new()) == NULL) {
ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE);
return NULL;
}
} else
ret = *ex;
if (!X509_EXTENSION_set_object(ret, obj))
goto err;
if (!X509_EXTENSION_set_critical(ret, crit))
goto err;
if (!X509_EXTENSION_set_data(ret, data))
goto err;
if ((ex != NULL) && (*ex == NULL))
*ex = ret;
return ret;
err:
if ((ex == NULL) || (ret != *ex))
X509_EXTENSION_free(ret);
return NULL;
}
int X509_EXTENSION_set_object(X509_EXTENSION *ex, const ASN1_OBJECT *obj)
{
if ((ex == NULL) || (obj == NULL))
return 0;
ASN1_OBJECT_free(ex->object);
ex->object = OBJ_dup(obj);
return ex->object != NULL;
}
int X509_EXTENSION_set_critical(X509_EXTENSION *ex, int crit)
{
if (ex == NULL)
return 0;
ex->critical = (crit) ? 0xFF : -1;
return 1;
}
int X509_EXTENSION_set_data(X509_EXTENSION *ex, ASN1_OCTET_STRING *data)
{
int i;
if (ex == NULL)
return 0;
i = ASN1_OCTET_STRING_set(&ex->value, data->data, data->length);
if (!i)
return 0;
return 1;
}
ASN1_OBJECT *X509_EXTENSION_get_object(X509_EXTENSION *ex)
{
if (ex == NULL)
return NULL;
return ex->object;
}
ASN1_OCTET_STRING *X509_EXTENSION_get_data(X509_EXTENSION *ex)
{
if (ex == NULL)
return NULL;
return &ex->value;
}
int X509_EXTENSION_get_critical(const X509_EXTENSION *ex)
{
if (ex == NULL)
return 0;
if (ex->critical > 0)
return 1;
return 0;
}
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