/*

 * Copyright 2012-2024 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 <openssl/crypto.h>

#include "internal/cryptlib.h"

#include <openssl/conf.h>

#include <openssl/x509v3.h>

/* Multi string module: add table entries from a given section */

static int do_tcreate(const char *value, const char *name);

static int stbl_module_init(CONF_IMODULE *md, const CONF *cnf)

{

    int i;

    const char *stbl_section;

    STACK_OF(CONF_VALUE) *sktmp;

    CONF_VALUE *mval;

    stbl_section = CONF_imodule_get_value(md);

    if ((sktmp = NCONF_get_section(cnf, stbl_section)) == NULL) {

        ERR_raise(ERR_LIB_ASN1, ASN1_R_ERROR_LOADING_SECTION);

        return 0;

    }

    for (i = 0; i < sk_CONF_VALUE_num(sktmp); i++) {

        mval = sk_CONF_VALUE_value(sktmp, i);

        if (!do_tcreate(mval->value, mval->name)) {

            ERR_raise(ERR_LIB_ASN1, ASN1_R_INVALID_VALUE);

            return 0;

        }

    }

    return 1;

}

static void stbl_module_finish(CONF_IMODULE *md)

{

    ASN1_STRING_TABLE_cleanup();

}

void ASN1_add_stable_module(void)

{

    CONF_module_add("stbl_section", stbl_module_init, stbl_module_finish);

}

/*

 * Create an table entry based on a name value pair. format is oid_name =

 * n1:v1, n2:v2,... where name is "min", "max", "mask" or "flags".

 */

static int do_tcreate(const char *value, const char *name)

{

    char *eptr;

    int nid, i, rv = 0;

    long tbl_min = -1, tbl_max = -1;

    unsigned long tbl_mask = 0, tbl_flags = 0;

    STACK_OF(CONF_VALUE) *lst = NULL;

    CONF_VALUE *cnf = NULL;

    nid = OBJ_sn2nid(name);

    if (nid == NID_undef)

        nid = OBJ_ln2nid(name);

    if (nid == NID_undef)

        goto err;

    lst = X509V3_parse_list(value);

    if (!lst)

        goto err;

    for (i = 0; i < sk_CONF_VALUE_num(lst); i++) {

        cnf = sk_CONF_VALUE_value(lst, i);

        if (cnf->value == NULL)

            goto err;

        if (strcmp(cnf->name, "min") == 0) {

            tbl_min = strtoul(cnf->value, &eptr, 0);

            if (*eptr)

                goto err;

        } else if (strcmp(cnf->name, "max") == 0) {

            tbl_max = strtoul(cnf->value, &eptr, 0);

            if (*eptr)

                goto err;

        } else if (strcmp(cnf->name, "mask") == 0) {

            if (!ASN1_str2mask(cnf->value, &tbl_mask) || !tbl_mask)

                goto err;

        } else if (strcmp(cnf->name, "flags") == 0) {

            if (strcmp(cnf->value, "nomask") == 0)

                tbl_flags = STABLE_NO_MASK;

            else if (strcmp(cnf->value, "none") == 0)

                tbl_flags = STABLE_FLAGS_CLEAR;

            else

                goto err;

        } else

            goto err;

    }

    rv = 1;

 err:

    if (rv == 0) {

        if (cnf)

            ERR_raise_data(ERR_LIB_ASN1, ASN1_R_INVALID_STRING_TABLE_VALUE,

                           "field=%s, value=%s", cnf->name,

                                                 cnf->value != NULL ? cnf->value

                                                 : value);

        else

            ERR_raise_data(ERR_LIB_ASN1, ASN1_R_INVALID_STRING_TABLE_VALUE,

                           "name=%s, value=%s", name, value);

    } else {

        rv = ASN1_STRING_TABLE_add(nid, tbl_min, tbl_max,

                                   tbl_mask, tbl_flags);

        if (!rv)

            ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);

    }

    sk_CONF_VALUE_pop_free(lst, X509V3_conf_free);

    return rv;

}