332 lines
9.5 KiB
C
332 lines
9.5 KiB
C
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/*
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* Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/safestack.h>
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#include <openssl/asn1.h>
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#include <openssl/objects.h>
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#include <openssl/evp.h>
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#include <openssl/x509.h>
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#include <openssl/x509v3.h>
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#include "x509_local.h"
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int X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x)
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{
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return sk_X509_ATTRIBUTE_num(x);
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}
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int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid,
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int lastpos)
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{
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const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
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if (obj == NULL)
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return -2;
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return X509at_get_attr_by_OBJ(x, obj, lastpos);
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}
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int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk,
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const ASN1_OBJECT *obj, int lastpos)
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{
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int n;
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X509_ATTRIBUTE *ex;
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if (sk == NULL)
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return -1;
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lastpos++;
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if (lastpos < 0)
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lastpos = 0;
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n = sk_X509_ATTRIBUTE_num(sk);
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for (; lastpos < n; lastpos++) {
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ex = sk_X509_ATTRIBUTE_value(sk, lastpos);
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if (OBJ_cmp(ex->object, obj) == 0)
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return lastpos;
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}
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return -1;
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}
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X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc)
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{
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if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)
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return NULL;
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return sk_X509_ATTRIBUTE_value(x, loc);
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}
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X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc)
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{
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X509_ATTRIBUTE *ret;
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if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)
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return NULL;
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ret = sk_X509_ATTRIBUTE_delete(x, loc);
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return ret;
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}
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STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x,
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X509_ATTRIBUTE *attr)
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{
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X509_ATTRIBUTE *new_attr = NULL;
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STACK_OF(X509_ATTRIBUTE) *sk = NULL;
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if (x == NULL) {
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X509err(X509_F_X509AT_ADD1_ATTR, ERR_R_PASSED_NULL_PARAMETER);
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goto err2;
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}
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if (*x == NULL) {
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if ((sk = sk_X509_ATTRIBUTE_new_null()) == NULL)
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goto err;
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} else
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sk = *x;
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if ((new_attr = X509_ATTRIBUTE_dup(attr)) == NULL)
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goto err2;
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if (!sk_X509_ATTRIBUTE_push(sk, new_attr))
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goto err;
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if (*x == NULL)
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*x = sk;
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return sk;
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err:
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X509err(X509_F_X509AT_ADD1_ATTR, ERR_R_MALLOC_FAILURE);
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err2:
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X509_ATTRIBUTE_free(new_attr);
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sk_X509_ATTRIBUTE_free(sk);
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return NULL;
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}
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STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE)
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**x, const ASN1_OBJECT *obj,
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int type,
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const unsigned char *bytes,
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int len)
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{
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X509_ATTRIBUTE *attr;
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STACK_OF(X509_ATTRIBUTE) *ret;
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attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len);
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if (!attr)
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return 0;
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ret = X509at_add1_attr(x, attr);
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X509_ATTRIBUTE_free(attr);
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return ret;
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}
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STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE)
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**x, int nid, int type,
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const unsigned char *bytes,
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int len)
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{
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X509_ATTRIBUTE *attr;
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STACK_OF(X509_ATTRIBUTE) *ret;
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attr = X509_ATTRIBUTE_create_by_NID(NULL, nid, type, bytes, len);
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if (!attr)
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return 0;
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ret = X509at_add1_attr(x, attr);
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X509_ATTRIBUTE_free(attr);
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return ret;
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}
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STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE)
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**x, const char *attrname,
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int type,
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const unsigned char *bytes,
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int len)
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{
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X509_ATTRIBUTE *attr;
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STACK_OF(X509_ATTRIBUTE) *ret;
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attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len);
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if (!attr)
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return 0;
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ret = X509at_add1_attr(x, attr);
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X509_ATTRIBUTE_free(attr);
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return ret;
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}
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void *X509at_get0_data_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *x,
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const ASN1_OBJECT *obj, int lastpos, int type)
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{
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int i;
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X509_ATTRIBUTE *at;
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i = X509at_get_attr_by_OBJ(x, obj, lastpos);
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if (i == -1)
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return NULL;
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if ((lastpos <= -2) && (X509at_get_attr_by_OBJ(x, obj, i) != -1))
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return NULL;
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at = X509at_get_attr(x, i);
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if (lastpos <= -3 && (X509_ATTRIBUTE_count(at) != 1))
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return NULL;
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return X509_ATTRIBUTE_get0_data(at, 0, type, NULL);
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}
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X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid,
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int atrtype, const void *data,
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int len)
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{
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ASN1_OBJECT *obj;
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X509_ATTRIBUTE *ret;
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obj = OBJ_nid2obj(nid);
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if (obj == NULL) {
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X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_NID, X509_R_UNKNOWN_NID);
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return NULL;
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}
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ret = X509_ATTRIBUTE_create_by_OBJ(attr, obj, atrtype, data, len);
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if (ret == NULL)
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ASN1_OBJECT_free(obj);
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return ret;
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}
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X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr,
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const ASN1_OBJECT *obj,
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int atrtype, const void *data,
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int len)
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{
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X509_ATTRIBUTE *ret;
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if ((attr == NULL) || (*attr == NULL)) {
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if ((ret = X509_ATTRIBUTE_new()) == NULL) {
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X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_OBJ,
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ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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} else
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ret = *attr;
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if (!X509_ATTRIBUTE_set1_object(ret, obj))
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goto err;
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if (!X509_ATTRIBUTE_set1_data(ret, atrtype, data, len))
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goto err;
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if ((attr != NULL) && (*attr == NULL))
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*attr = ret;
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return ret;
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err:
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if ((attr == NULL) || (ret != *attr))
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X509_ATTRIBUTE_free(ret);
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return NULL;
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}
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X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr,
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const char *atrname, int type,
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const unsigned char *bytes,
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int len)
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{
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ASN1_OBJECT *obj;
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X509_ATTRIBUTE *nattr;
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obj = OBJ_txt2obj(atrname, 0);
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if (obj == NULL) {
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X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_TXT,
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X509_R_INVALID_FIELD_NAME);
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ERR_add_error_data(2, "name=", atrname);
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return NULL;
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}
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nattr = X509_ATTRIBUTE_create_by_OBJ(attr, obj, type, bytes, len);
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ASN1_OBJECT_free(obj);
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return nattr;
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}
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int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj)
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{
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if ((attr == NULL) || (obj == NULL))
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return 0;
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ASN1_OBJECT_free(attr->object);
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attr->object = OBJ_dup(obj);
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return attr->object != NULL;
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}
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int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype,
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const void *data, int len)
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{
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ASN1_TYPE *ttmp = NULL;
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ASN1_STRING *stmp = NULL;
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int atype = 0;
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if (!attr)
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return 0;
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if (attrtype & MBSTRING_FLAG) {
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stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype,
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OBJ_obj2nid(attr->object));
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if (!stmp) {
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X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_ASN1_LIB);
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return 0;
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}
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atype = stmp->type;
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} else if (len != -1) {
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if ((stmp = ASN1_STRING_type_new(attrtype)) == NULL)
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goto err;
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if (!ASN1_STRING_set(stmp, data, len))
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goto err;
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atype = attrtype;
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}
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/*
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* This is a bit naughty because the attribute should really have at
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* least one value but some types use and zero length SET and require
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* this.
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*/
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if (attrtype == 0) {
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ASN1_STRING_free(stmp);
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return 1;
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}
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if ((ttmp = ASN1_TYPE_new()) == NULL)
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goto err;
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if ((len == -1) && !(attrtype & MBSTRING_FLAG)) {
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if (!ASN1_TYPE_set1(ttmp, attrtype, data))
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goto err;
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} else {
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ASN1_TYPE_set(ttmp, atype, stmp);
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stmp = NULL;
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}
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if (!sk_ASN1_TYPE_push(attr->set, ttmp))
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goto err;
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return 1;
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err:
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X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_MALLOC_FAILURE);
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ASN1_TYPE_free(ttmp);
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ASN1_STRING_free(stmp);
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return 0;
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}
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int X509_ATTRIBUTE_count(const X509_ATTRIBUTE *attr)
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{
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if (attr == NULL)
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return 0;
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return sk_ASN1_TYPE_num(attr->set);
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}
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ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr)
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{
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if (attr == NULL)
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return NULL;
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return attr->object;
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}
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void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx,
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int atrtype, void *data)
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{
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ASN1_TYPE *ttmp;
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ttmp = X509_ATTRIBUTE_get0_type(attr, idx);
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if (!ttmp)
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return NULL;
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if (atrtype == V_ASN1_BOOLEAN
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|| atrtype == V_ASN1_NULL
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|| atrtype != ASN1_TYPE_get(ttmp)) {
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X509err(X509_F_X509_ATTRIBUTE_GET0_DATA, X509_R_WRONG_TYPE);
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return NULL;
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}
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return ttmp->value.ptr;
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}
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ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx)
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{
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if (attr == NULL)
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return NULL;
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return sk_ASN1_TYPE_value(attr->set, idx);
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}
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