/*

 * Copyright 1999-2026 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>

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)

int GENERAL_NAME_set1_X509_NAME(GENERAL_NAME **tgt, const X509_NAME *src)

{

    GENERAL_NAME *name;

    if (tgt == NULL) {

        ERR_raise(ERR_LIB_X509V3, X509V3_R_INVALID_NULL_ARGUMENT);

        return 0;

    }

    if ((name = GENERAL_NAME_new()) == NULL)

        return 0;

    name->type = GEN_DIRNAME;

    if (src == NULL) { /* NULL-DN */

        if ((name->d.directoryName = X509_NAME_new()) == NULL)

            goto err;

    } else if (!X509_NAME_set(&name->d.directoryName, src)) {

        goto err;

    }

    GENERAL_NAME_free(*tgt);

    *tgt = name;

    return 1;

err:

    GENERAL_NAME_free(name);

    return 0;

}

static int edipartyname_cmp(const EDIPARTYNAME *a, const EDIPARTYNAME *b)

{

    int res;

    if (a == NULL || b == NULL) {

        /*

         * Shouldn't be possible in a valid GENERAL_NAME, but we handle it

         * anyway. OTHERNAME_cmp treats NULL != NULL so we do the same here

         */

        return -1;

    }

    if (a->nameAssigner == NULL && b->nameAssigner != NULL)

        return -1;

    if (a->nameAssigner != NULL && b->nameAssigner == NULL)

        return 1;

    /* If we get here then both have nameAssigner set, or both unset */

    if (a->nameAssigner != NULL) {

        res = ASN1_STRING_cmp(a->nameAssigner, b->nameAssigner);

        if (res != 0)

            return res;

    }

    /*

     * partyName is required, so these should never be NULL. We treat it in

     * the same way as the a == NULL || b == NULL case above

     */

    if (a->partyName == NULL || b->partyName == NULL)

        return -1;

    return ASN1_STRING_cmp(a->partyName, b->partyName);

}

/* Returns 0 if they are equal, != 0 otherwise. */

int GENERAL_NAME_cmp(GENERAL_NAME *a, GENERAL_NAME *b)

{

    int result = -1;

    if (!a || !b || a->type != b->type)

        return -1;

    switch (a->type) {

    case GEN_X400:

        result = ASN1_STRING_cmp(a->d.x400Address, b->d.x400Address);

        break;

    case GEN_EDIPARTY:

        result = edipartyname_cmp(a->d.ediPartyName, b->d.ediPartyName);

        break;

    case GEN_OTHERNAME:

        result = OTHERNAME_cmp(a->d.otherName, b->d.otherName);

        break;

    case GEN_EMAIL:

    case GEN_DNS:

    case GEN_URI:

        result = ASN1_STRING_cmp(a->d.ia5, b->d.ia5);

        break;

    case GEN_DIRNAME:

        result = X509_NAME_cmp(a->d.dirn, b->d.dirn);

        break;

    case GEN_IPADD:

        result = ASN1_OCTET_STRING_cmp(a->d.ip, b->d.ip);

        break;

    case GEN_RID:

        result = OBJ_cmp(a->d.rid, b->d.rid);

        break;

    }

    return result;

}

/* 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 == NULL)

        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;

}