/*

 * Copyright 1999-2017 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the OpenSSL license (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/conf.h>

#include <openssl/asn1.h>

#include <openssl/asn1t.h>

#include <openssl/x509v3.h>

#include "ext_dat.h"

static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_INFO_ACCESS(X509V3_EXT_METHOD

                                                       *method, AUTHORITY_INFO_ACCESS

                                                       *ainfo, STACK_OF(CONF_VALUE)

                                                       *ret);

static AUTHORITY_INFO_ACCESS *v2i_AUTHORITY_INFO_ACCESS(X509V3_EXT_METHOD

                                                        *method,

                                                        X509V3_CTX *ctx,

                                                        STACK_OF(CONF_VALUE)

                                                        *nval);

const X509V3_EXT_METHOD v3_info = { NID_info_access, X509V3_EXT_MULTILINE,

    ASN1_ITEM_ref(AUTHORITY_INFO_ACCESS),

    0, 0, 0, 0,

    0, 0,

    (X509V3_EXT_I2V) i2v_AUTHORITY_INFO_ACCESS,

    (X509V3_EXT_V2I)v2i_AUTHORITY_INFO_ACCESS,

    0, 0,

    NULL

};

const X509V3_EXT_METHOD v3_sinfo = { NID_sinfo_access, X509V3_EXT_MULTILINE,

    ASN1_ITEM_ref(AUTHORITY_INFO_ACCESS),

    0, 0, 0, 0,

    0, 0,

    (X509V3_EXT_I2V) i2v_AUTHORITY_INFO_ACCESS,

    (X509V3_EXT_V2I)v2i_AUTHORITY_INFO_ACCESS,

    0, 0,

    NULL

};

ASN1_SEQUENCE(ACCESS_DESCRIPTION) = {

        ASN1_SIMPLE(ACCESS_DESCRIPTION, method, ASN1_OBJECT),

        ASN1_SIMPLE(ACCESS_DESCRIPTION, location, GENERAL_NAME)

} ASN1_SEQUENCE_END(ACCESS_DESCRIPTION)

IMPLEMENT_ASN1_FUNCTIONS(ACCESS_DESCRIPTION)

ASN1_ITEM_TEMPLATE(AUTHORITY_INFO_ACCESS) =

        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, GeneralNames, ACCESS_DESCRIPTION)

ASN1_ITEM_TEMPLATE_END(AUTHORITY_INFO_ACCESS)

IMPLEMENT_ASN1_FUNCTIONS(AUTHORITY_INFO_ACCESS)

static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_INFO_ACCESS(

    X509V3_EXT_METHOD *method, AUTHORITY_INFO_ACCESS *ainfo,

    STACK_OF(CONF_VALUE) *ret)

{

    ACCESS_DESCRIPTION *desc;

    int i, nlen;

    char objtmp[80], *ntmp;

    CONF_VALUE *vtmp;

    STACK_OF(CONF_VALUE) *tret = ret;

    for (i = 0; i < sk_ACCESS_DESCRIPTION_num(ainfo); i++) {

        STACK_OF(CONF_VALUE) *tmp;

        desc = sk_ACCESS_DESCRIPTION_value(ainfo, i);

        tmp = i2v_GENERAL_NAME(method, desc->location, tret);

        if (tmp == NULL)

            goto err;

        tret = tmp;

        vtmp = sk_CONF_VALUE_value(tret, i);

        i2t_ASN1_OBJECT(objtmp, sizeof(objtmp), desc->method);

        nlen = strlen(objtmp) + 3 + strlen(vtmp->name) + 1;

        ntmp = OPENSSL_malloc(nlen);

        if (ntmp == NULL)

            goto err;

        BIO_snprintf(ntmp, nlen, "%s - %s", objtmp, vtmp->name);

        OPENSSL_free(vtmp->name);

        vtmp->name = ntmp;

    }

    if (ret == NULL && tret == NULL)

        return sk_CONF_VALUE_new_null();

    return tret;

 err:

    X509V3err(X509V3_F_I2V_AUTHORITY_INFO_ACCESS, ERR_R_MALLOC_FAILURE);

    if (ret == NULL && tret != NULL)

        sk_CONF_VALUE_pop_free(tret, X509V3_conf_free);

    return NULL;

}

static AUTHORITY_INFO_ACCESS *v2i_AUTHORITY_INFO_ACCESS(X509V3_EXT_METHOD

                                                        *method,

                                                        X509V3_CTX *ctx,

                                                        STACK_OF(CONF_VALUE)

                                                        *nval)

{

    AUTHORITY_INFO_ACCESS *ainfo = NULL;

    CONF_VALUE *cnf, ctmp;

    ACCESS_DESCRIPTION *acc;

    int i, objlen;

    const int num = sk_CONF_VALUE_num(nval);

    char *objtmp, *ptmp;

    if ((ainfo = sk_ACCESS_DESCRIPTION_new_reserve(NULL, num)) == NULL) {

        X509V3err(X509V3_F_V2I_AUTHORITY_INFO_ACCESS, ERR_R_MALLOC_FAILURE);

        return NULL;

    }

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

        cnf = sk_CONF_VALUE_value(nval, i);

        if ((acc = ACCESS_DESCRIPTION_new()) == NULL) {

            X509V3err(X509V3_F_V2I_AUTHORITY_INFO_ACCESS,

                      ERR_R_MALLOC_FAILURE);

            goto err;

        }

        sk_ACCESS_DESCRIPTION_push(ainfo, acc); /* Cannot fail due to reserve */

        ptmp = strchr(cnf->name, ';');

        if (!ptmp) {

            X509V3err(X509V3_F_V2I_AUTHORITY_INFO_ACCESS,

                      X509V3_R_INVALID_SYNTAX);

            goto err;

        }

        objlen = ptmp - cnf->name;

        ctmp.name = ptmp + 1;

        ctmp.value = cnf->value;

        if (!v2i_GENERAL_NAME_ex(acc->location, method, ctx, &ctmp, 0))

            goto err;

        if ((objtmp = OPENSSL_strndup(cnf->name, objlen)) == NULL) {

            X509V3err(X509V3_F_V2I_AUTHORITY_INFO_ACCESS,

                      ERR_R_MALLOC_FAILURE);

            goto err;

        }

        acc->method = OBJ_txt2obj(objtmp, 0);

        if (!acc->method) {

            X509V3err(X509V3_F_V2I_AUTHORITY_INFO_ACCESS,

                      X509V3_R_BAD_OBJECT);

            ERR_add_error_data(2, "value=", objtmp);

            OPENSSL_free(objtmp);

            goto err;

        }

        OPENSSL_free(objtmp);

    }

    return ainfo;

 err:

    sk_ACCESS_DESCRIPTION_pop_free(ainfo, ACCESS_DESCRIPTION_free);

    return NULL;

}

int i2a_ACCESS_DESCRIPTION(BIO *bp, const ACCESS_DESCRIPTION *a)

{

    i2a_ASN1_OBJECT(bp, a->method);

    return 2;

}