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- /*
- * Copyright 1995-2021 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 "crypto/x509.h"
- #include "x509_local.h"
- int X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x)
- {
- return sk_X509_ATTRIBUTE_num(x);
- }
- int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid,
- int lastpos)
- {
- const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
- if (obj == NULL)
- return -2;
- return X509at_get_attr_by_OBJ(x, obj, lastpos);
- }
- int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk,
- const ASN1_OBJECT *obj, int lastpos)
- {
- int n;
- X509_ATTRIBUTE *ex;
- if (sk == NULL)
- return -1;
- lastpos++;
- if (lastpos < 0)
- lastpos = 0;
- n = sk_X509_ATTRIBUTE_num(sk);
- for (; lastpos < n; lastpos++) {
- ex = sk_X509_ATTRIBUTE_value(sk, lastpos);
- if (OBJ_cmp(ex->object, obj) == 0)
- return lastpos;
- }
- return -1;
- }
- X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc)
- {
- if (x == NULL) {
- ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
- return NULL;
- }
- if (sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0) {
- ERR_raise(ERR_LIB_X509, ERR_R_PASSED_INVALID_ARGUMENT);
- return NULL;
- }
- return sk_X509_ATTRIBUTE_value(x, loc);
- }
- X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc)
- {
- if (x == NULL) {
- ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
- return NULL;
- }
- if (sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0) {
- ERR_raise(ERR_LIB_X509, ERR_R_PASSED_INVALID_ARGUMENT);
- return NULL;
- }
- return sk_X509_ATTRIBUTE_delete(x, loc);
- }
- STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x,
- X509_ATTRIBUTE *attr)
- {
- X509_ATTRIBUTE *new_attr = NULL;
- STACK_OF(X509_ATTRIBUTE) *sk = NULL;
- if (x == NULL || attr == NULL) {
- ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
- return NULL;
- }
- if (X509at_get_attr_by_OBJ(sk, attr->object, -1) != -1) {
- ERR_raise(ERR_LIB_X509, X509_R_DUPLICATE_ATTRIBUTE);
- return NULL;
- }
- if (*x == NULL) {
- if ((sk = sk_X509_ATTRIBUTE_new_null()) == NULL) {
- ERR_raise(ERR_LIB_X509, ERR_R_CRYPTO_LIB);
- goto err;
- }
- } else {
- sk = *x;
- }
- if ((new_attr = X509_ATTRIBUTE_dup(attr)) == NULL)
- goto err;
- if (!sk_X509_ATTRIBUTE_push(sk, new_attr)) {
- ERR_raise(ERR_LIB_X509, ERR_R_CRYPTO_LIB);
- goto err;
- }
- if (*x == NULL)
- *x = sk;
- return sk;
- err:
- X509_ATTRIBUTE_free(new_attr);
- if (*x == NULL)
- sk_X509_ATTRIBUTE_free(sk);
- return NULL;
- }
- STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE)
- **x, const ASN1_OBJECT *obj,
- int type,
- const unsigned char *bytes,
- int len)
- {
- X509_ATTRIBUTE *attr;
- STACK_OF(X509_ATTRIBUTE) *ret;
- attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len);
- if (attr == NULL)
- return 0;
- ret = X509at_add1_attr(x, attr);
- X509_ATTRIBUTE_free(attr);
- return ret;
- }
- STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE)
- **x, int nid, int type,
- const unsigned char *bytes,
- int len)
- {
- X509_ATTRIBUTE *attr;
- STACK_OF(X509_ATTRIBUTE) *ret;
- attr = X509_ATTRIBUTE_create_by_NID(NULL, nid, type, bytes, len);
- if (attr == NULL)
- return 0;
- ret = X509at_add1_attr(x, attr);
- X509_ATTRIBUTE_free(attr);
- return ret;
- }
- STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE)
- **x, const char *attrname,
- int type,
- const unsigned char *bytes,
- int len)
- {
- X509_ATTRIBUTE *attr;
- STACK_OF(X509_ATTRIBUTE) *ret;
- attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len);
- if (attr == NULL)
- return 0;
- ret = X509at_add1_attr(x, attr);
- X509_ATTRIBUTE_free(attr);
- return ret;
- }
- void *X509at_get0_data_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *x,
- const ASN1_OBJECT *obj, int lastpos, int type)
- {
- int i = X509at_get_attr_by_OBJ(x, obj, lastpos);
- X509_ATTRIBUTE *at;
- if (i == -1)
- return NULL;
- if (lastpos <= -2 && X509at_get_attr_by_OBJ(x, obj, i) != -1)
- return NULL;
- at = X509at_get_attr(x, i);
- if (lastpos <= -3 && X509_ATTRIBUTE_count(at) != 1)
- return NULL;
- return X509_ATTRIBUTE_get0_data(at, 0, type, NULL);
- }
- STACK_OF(X509_ATTRIBUTE) *ossl_x509at_dup(const STACK_OF(X509_ATTRIBUTE) *x)
- {
- int i, n = sk_X509_ATTRIBUTE_num(x);
- STACK_OF(X509_ATTRIBUTE) *sk = NULL;
- for (i = 0; i < n; ++i) {
- if (X509at_add1_attr(&sk, sk_X509_ATTRIBUTE_value(x, i)) == NULL) {
- sk_X509_ATTRIBUTE_pop_free(sk, X509_ATTRIBUTE_free);
- return NULL;
- }
- }
- return sk;
- }
- X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid,
- int atrtype, const void *data,
- int len)
- {
- ASN1_OBJECT *obj = OBJ_nid2obj(nid);
- X509_ATTRIBUTE *ret;
- if (obj == NULL) {
- ERR_raise(ERR_LIB_X509, X509_R_UNKNOWN_NID);
- return NULL;
- }
- ret = X509_ATTRIBUTE_create_by_OBJ(attr, obj, atrtype, data, len);
- if (ret == NULL)
- ASN1_OBJECT_free(obj);
- return ret;
- }
- X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr,
- const ASN1_OBJECT *obj,
- int atrtype, const void *data,
- int len)
- {
- X509_ATTRIBUTE *ret;
- if (attr == NULL || *attr == NULL) {
- if ((ret = X509_ATTRIBUTE_new()) == NULL) {
- ERR_raise(ERR_LIB_X509, ERR_R_ASN1_LIB);
- return NULL;
- }
- } else {
- ret = *attr;
- }
- if (!X509_ATTRIBUTE_set1_object(ret, obj))
- goto err;
- if (!X509_ATTRIBUTE_set1_data(ret, atrtype, data, len))
- goto err;
- if (attr != NULL && *attr == NULL)
- *attr = ret;
- return ret;
- err:
- if (attr == NULL || ret != *attr)
- X509_ATTRIBUTE_free(ret);
- return NULL;
- }
- X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr,
- const char *atrname, int type,
- const unsigned char *bytes,
- int len)
- {
- ASN1_OBJECT *obj = OBJ_txt2obj(atrname, 0);
- X509_ATTRIBUTE *nattr;
- if (obj == NULL) {
- ERR_raise_data(ERR_LIB_X509, X509_R_INVALID_FIELD_NAME,
- "name=%s", atrname);
- return NULL;
- }
- nattr = X509_ATTRIBUTE_create_by_OBJ(attr, obj, type, bytes, len);
- ASN1_OBJECT_free(obj);
- return nattr;
- }
- int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj)
- {
- if (attr == NULL || obj == NULL) {
- ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
- ASN1_OBJECT_free(attr->object);
- attr->object = OBJ_dup(obj);
- return attr->object != NULL;
- }
- int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype,
- const void *data, int len)
- {
- ASN1_TYPE *ttmp = NULL;
- ASN1_STRING *stmp = NULL;
- int atype = 0;
- if (attr == NULL) {
- ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
- if ((attrtype & MBSTRING_FLAG) != 0) {
- stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype,
- OBJ_obj2nid(attr->object));
- if (stmp == NULL) {
- ERR_raise(ERR_LIB_X509, ERR_R_ASN1_LIB);
- return 0;
- }
- atype = stmp->type;
- } else if (len != -1) {
- if ((stmp = ASN1_STRING_type_new(attrtype)) == NULL
- || !ASN1_STRING_set(stmp, data, len)) {
- ERR_raise(ERR_LIB_X509, ERR_R_ASN1_LIB);
- goto err;
- }
- atype = attrtype;
- }
- /*
- * This is a bit naughty because the attribute should really have at
- * least one value but some types use and zero length SET and require
- * this.
- */
- if (attrtype == 0) {
- ASN1_STRING_free(stmp);
- return 1;
- }
- if ((ttmp = ASN1_TYPE_new()) == NULL) {
- ERR_raise(ERR_LIB_X509, ERR_R_ASN1_LIB);
- goto err;
- }
- if (len == -1 && (attrtype & MBSTRING_FLAG) == 0) {
- if (!ASN1_TYPE_set1(ttmp, attrtype, data)) {
- ERR_raise(ERR_LIB_X509, ERR_R_ASN1_LIB);
- goto err;
- }
- } else {
- ASN1_TYPE_set(ttmp, atype, stmp);
- stmp = NULL;
- }
- if (!sk_ASN1_TYPE_push(attr->set, ttmp)) {
- ERR_raise(ERR_LIB_X509, ERR_R_CRYPTO_LIB);
- goto err;
- }
- return 1;
- err:
- ASN1_TYPE_free(ttmp);
- ASN1_STRING_free(stmp);
- return 0;
- }
- int X509_ATTRIBUTE_count(const X509_ATTRIBUTE *attr)
- {
- if (attr == NULL)
- return 0;
- return sk_ASN1_TYPE_num(attr->set);
- }
- ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr)
- {
- if (attr == NULL) {
- ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
- return NULL;
- }
- return attr->object;
- }
- void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx,
- int atrtype, void *data)
- {
- ASN1_TYPE *ttmp = X509_ATTRIBUTE_get0_type(attr, idx);
- if (ttmp == NULL)
- return NULL;
- if (atrtype == V_ASN1_BOOLEAN
- || atrtype == V_ASN1_NULL
- || atrtype != ASN1_TYPE_get(ttmp)) {
- ERR_raise(ERR_LIB_X509, X509_R_WRONG_TYPE);
- return NULL;
- }
- return ttmp->value.ptr;
- }
- ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx)
- {
- if (attr == NULL) {
- ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
- return NULL;
- }
- return sk_ASN1_TYPE_value(attr->set, idx);
- }
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