/* v3_genn.c */
/*
 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
 * 1999.
 */
/* ====================================================================
 * Copyright (c) 1999-2008 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com). */

#include <stdio.h>

#include <openssl/asn1t.h>
#include <openssl/conf.h>
#include <openssl/obj.h>
#include <openssl/x509v3.h>


ASN1_SEQUENCE(OTHERNAME) = {
        ASN1_SIMPLE(OTHERNAME, type_id, ASN1_OBJECT),
        /* Maybe have a true ANY DEFINED BY later */
        ASN1_EXP(OTHERNAME, value, ASN1_ANY, 0)
} ASN1_SEQUENCE_END(OTHERNAME)

IMPLEMENT_ASN1_FUNCTIONS(OTHERNAME)

ASN1_SEQUENCE(EDIPARTYNAME) = {
        /* DirectoryString is a CHOICE type, so use explicit tagging. */
        ASN1_EXP_OPT(EDIPARTYNAME, nameAssigner, DIRECTORYSTRING, 0),
        ASN1_EXP(EDIPARTYNAME, partyName, DIRECTORYSTRING, 1)
} ASN1_SEQUENCE_END(EDIPARTYNAME)

IMPLEMENT_ASN1_FUNCTIONS(EDIPARTYNAME)

ASN1_CHOICE(GENERAL_NAME) = {
        ASN1_IMP(GENERAL_NAME, d.otherName, OTHERNAME, GEN_OTHERNAME),
        ASN1_IMP(GENERAL_NAME, d.rfc822Name, ASN1_IA5STRING, GEN_EMAIL),
        ASN1_IMP(GENERAL_NAME, d.dNSName, ASN1_IA5STRING, GEN_DNS),
        /* Don't decode this */
        ASN1_IMP(GENERAL_NAME, d.x400Address, ASN1_SEQUENCE, GEN_X400),
        /* X509_NAME is a CHOICE type so use EXPLICIT */
        ASN1_EXP(GENERAL_NAME, d.directoryName, X509_NAME, GEN_DIRNAME),
        ASN1_IMP(GENERAL_NAME, d.ediPartyName, EDIPARTYNAME, GEN_EDIPARTY),
        ASN1_IMP(GENERAL_NAME, d.uniformResourceIdentifier, ASN1_IA5STRING, GEN_URI),
        ASN1_IMP(GENERAL_NAME, d.iPAddress, ASN1_OCTET_STRING, GEN_IPADD),
        ASN1_IMP(GENERAL_NAME, d.registeredID, ASN1_OBJECT, GEN_RID)
} ASN1_CHOICE_END(GENERAL_NAME)

IMPLEMENT_ASN1_FUNCTIONS(GENERAL_NAME)

ASN1_ITEM_TEMPLATE(GENERAL_NAMES) =
        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, GeneralNames, GENERAL_NAME)
ASN1_ITEM_TEMPLATE_END(GENERAL_NAMES)

IMPLEMENT_ASN1_FUNCTIONS(GENERAL_NAMES)

IMPLEMENT_ASN1_DUP_FUNCTION(GENERAL_NAME)

static int edipartyname_cmp(const EDIPARTYNAME *a, const EDIPARTYNAME *b)
{
    /* nameAssigner is optional and may be NULL. */
    if (a->nameAssigner == NULL) {
        if (b->nameAssigner != NULL) {
            return -1;
        }
    } else {
        if (b->nameAssigner == NULL ||
            ASN1_STRING_cmp(a->nameAssigner, b->nameAssigner) != 0) {
            return -1;
        }
    }

    /* partyName may not be NULL. */
    return ASN1_STRING_cmp(a->partyName, b->partyName);
}

/* Returns 0 if they are equal, != 0 otherwise. */
int GENERAL_NAME_cmp(const GENERAL_NAME *a, const GENERAL_NAME *b)
{
    if (!a || !b || a->type != b->type)
        return -1;

    switch (a->type) {
    case GEN_X400:
        return ASN1_TYPE_cmp(a->d.x400Address, b->d.x400Address);

    case GEN_EDIPARTY:
        return edipartyname_cmp(a->d.ediPartyName, b->d.ediPartyName);

    case GEN_OTHERNAME:
        return OTHERNAME_cmp(a->d.otherName, b->d.otherName);

    case GEN_EMAIL:
    case GEN_DNS:
    case GEN_URI:
        return ASN1_STRING_cmp(a->d.ia5, b->d.ia5);

    case GEN_DIRNAME:
        return X509_NAME_cmp(a->d.dirn, b->d.dirn);

    case GEN_IPADD:
        return ASN1_OCTET_STRING_cmp(a->d.ip, b->d.ip);

    case GEN_RID:
        return OBJ_cmp(a->d.rid, b->d.rid);
    }

    return -1;
}

/* Returns 0 if they are equal, != 0 otherwise. */
int OTHERNAME_cmp(OTHERNAME *a, OTHERNAME *b)
{
    int result = -1;

    if (!a || !b)
        return -1;
    /* Check their type first. */
    if ((result = OBJ_cmp(a->type_id, b->type_id)) != 0)
        return result;
    /* Check the value. */
    result = ASN1_TYPE_cmp(a->value, b->value);
    return result;
}

void GENERAL_NAME_set0_value(GENERAL_NAME *a, int type, void *value)
{
    switch (type) {
    case GEN_X400:
        a->d.x400Address = value;
        break;

    case GEN_EDIPARTY:
        a->d.ediPartyName = value;
        break;

    case GEN_OTHERNAME:
        a->d.otherName = value;
        break;

    case GEN_EMAIL:
    case GEN_DNS:
    case GEN_URI:
        a->d.ia5 = value;
        break;

    case GEN_DIRNAME:
        a->d.dirn = value;
        break;

    case GEN_IPADD:
        a->d.ip = value;
        break;

    case GEN_RID:
        a->d.rid = value;
        break;
    }
    a->type = type;
}

void *GENERAL_NAME_get0_value(const GENERAL_NAME *a, int *ptype)
{
    if (ptype)
        *ptype = a->type;
    switch (a->type) {
    case GEN_X400:
        return a->d.x400Address;

    case GEN_EDIPARTY:
        return a->d.ediPartyName;

    case GEN_OTHERNAME:
        return a->d.otherName;

    case GEN_EMAIL:
    case GEN_DNS:
    case GEN_URI:
        return a->d.ia5;

    case GEN_DIRNAME:
        return a->d.dirn;

    case GEN_IPADD:
        return a->d.ip;

    case GEN_RID:
        return a->d.rid;

    default:
        return NULL;
    }
}

int GENERAL_NAME_set0_othername(GENERAL_NAME *gen,
                                ASN1_OBJECT *oid, ASN1_TYPE *value)
{
    OTHERNAME *oth;
    oth = OTHERNAME_new();
    if (!oth)
        return 0;
    ASN1_TYPE_free(oth->value);
    oth->type_id = oid;
    oth->value = value;
    GENERAL_NAME_set0_value(gen, GEN_OTHERNAME, oth);
    return 1;
}

int GENERAL_NAME_get0_otherName(const GENERAL_NAME *gen,
                                ASN1_OBJECT **poid, ASN1_TYPE **pvalue)
{
    if (gen->type != GEN_OTHERNAME)
        return 0;
    if (poid)
        *poid = gen->d.otherName->type_id;
    if (pvalue)
        *pvalue = gen->d.otherName->value;
    return 1;
}