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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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