/*

 * Copyright 2003-2021 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/asn1t.h>

#include <openssl/conf.h>

#include <openssl/x509v3.h>

#include "ext_dat.h"

static void *v2i_POLICY_MAPPINGS(const X509V3_EXT_METHOD *method,

                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);

static STACK_OF(CONF_VALUE) *i2v_POLICY_MAPPINGS(const X509V3_EXT_METHOD

                                                 *method, void *pmps, STACK_OF(CONF_VALUE)

                                                 *extlist);

const X509V3_EXT_METHOD ossl_v3_policy_mappings = {

    NID_policy_mappings, 0,

    ASN1_ITEM_ref(POLICY_MAPPINGS),

    0, 0, 0, 0,

    0, 0,

    i2v_POLICY_MAPPINGS,

    v2i_POLICY_MAPPINGS,

    0, 0,

    NULL

};

ASN1_SEQUENCE(POLICY_MAPPING) = {

        ASN1_SIMPLE(POLICY_MAPPING, issuerDomainPolicy, ASN1_OBJECT),

        ASN1_SIMPLE(POLICY_MAPPING, subjectDomainPolicy, ASN1_OBJECT)

} ASN1_SEQUENCE_END(POLICY_MAPPING)

ASN1_ITEM_TEMPLATE(POLICY_MAPPINGS) =

        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, POLICY_MAPPINGS,

                                                                POLICY_MAPPING)

ASN1_ITEM_TEMPLATE_END(POLICY_MAPPINGS)

IMPLEMENT_ASN1_ALLOC_FUNCTIONS(POLICY_MAPPING)

static STACK_OF(CONF_VALUE) *i2v_POLICY_MAPPINGS(const X509V3_EXT_METHOD

                                                 *method, void *a, STACK_OF(CONF_VALUE)

                                                 *ext_list)

{

    POLICY_MAPPINGS *pmaps = a;

    POLICY_MAPPING *pmap;

    int i;

    char obj_tmp1[80];

    char obj_tmp2[80];

    for (i = 0; i < sk_POLICY_MAPPING_num(pmaps); i++) {

        pmap = sk_POLICY_MAPPING_value(pmaps, i);

        i2t_ASN1_OBJECT(obj_tmp1, 80, pmap->issuerDomainPolicy);

        i2t_ASN1_OBJECT(obj_tmp2, 80, pmap->subjectDomainPolicy);

        X509V3_add_value(obj_tmp1, obj_tmp2, &ext_list);

    }

    return ext_list;

}

static void *v2i_POLICY_MAPPINGS(const X509V3_EXT_METHOD *method,

                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)

{

    POLICY_MAPPING *pmap = NULL;

    ASN1_OBJECT *obj1 = NULL, *obj2 = NULL;

    CONF_VALUE *val;

    POLICY_MAPPINGS *pmaps;

    const int num = sk_CONF_VALUE_num(nval);

    int i;

    if ((pmaps = sk_POLICY_MAPPING_new_reserve(NULL, num)) == NULL) {

        ERR_raise(ERR_LIB_X509V3, ERR_R_CRYPTO_LIB);

        return NULL;

    }

    for (i = 0; i < num; i++) {

        val = sk_CONF_VALUE_value(nval, i);

        if (!val->value || !val->name) {

            ERR_raise_data(ERR_LIB_X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER,

                           "%s", val->name);

            goto err;

        }

        obj1 = OBJ_txt2obj(val->name, 0);

        obj2 = OBJ_txt2obj(val->value, 0);

        if (!obj1 || !obj2) {

            ERR_raise_data(ERR_LIB_X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER,

                           "%s", val->name);

            goto err;

        }

        pmap = POLICY_MAPPING_new();

        if (pmap == NULL) {

            ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);

            goto err;

        }

        pmap->issuerDomainPolicy = obj1;

        pmap->subjectDomainPolicy = obj2;

        obj1 = obj2 = NULL;

        sk_POLICY_MAPPING_push(pmaps, pmap); /* no failure as it was reserved */

    }

    return pmaps;

 err:

    ASN1_OBJECT_free(obj1);

    ASN1_OBJECT_free(obj2);

    sk_POLICY_MAPPING_pop_free(pmaps, POLICY_MAPPING_free);

    return NULL;

}