/* conf_lib.c */

/* Written by Richard Levitte (richard@levitte.org) for the OpenSSL

 * project 2000.

 */

/* ====================================================================

 * Copyright (c) 2000 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).

 *

 */

 /*

 © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

 */

#include <stdio.h>

#include <openssl/crypto.h>

#include <openssl/err.h>

#include <openssl/conf.h>

#include <openssl/conf_api.h>

#include <openssl/lhash.h>

#if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))

#include "libcrypto_wsd_macros.h"

#include "libcrypto_wsd.h"

#endif

const char CONF_version[]="CONF" OPENSSL_VERSION_PTEXT;

#ifndef EMULATOR

static CONF_METHOD *default_CONF_method=NULL;

#else

GET_STATIC_VAR_FROM_TLS(default_CONF_method,conf_lib,const CONF_METHOD *)

#define default_CONF_method (*GET_WSD_VAR_NAME(default_CONF_method,conf_lib, s)())

#endif

/* Init a 'CONF' structure from an old LHASH */

EXPORT_C void CONF_set_nconf(CONF *conf, LHASH *hash)

	{

	if (default_CONF_method == NULL)

		default_CONF_method = NCONF_default();

	default_CONF_method->init(conf);

	conf->data = hash;

	}

/* The following section contains the "CONF classic" functions,

   rewritten in terms of the new CONF interface. */

EXPORT_C int CONF_set_default_method(CONF_METHOD *meth)

	{

	default_CONF_method = meth;

	return 1;

	}

EXPORT_C LHASH *CONF_load(LHASH *conf, const char *file, long *eline)

	{

	LHASH *ltmp;

	BIO *in=NULL;

#ifdef OPENSSL_SYS_VMS

	in=BIO_new_file(file, "r");

#else

	in=BIO_new_file(file, "rb");

#endif

	if (in == NULL)

		{

		CONFerr(CONF_F_CONF_LOAD,ERR_R_SYS_LIB);

		return NULL;

		}

	ltmp = CONF_load_bio(conf, in, eline);

	BIO_free(in);

	return ltmp;

	}

#ifndef OPENSSL_NO_FP_API

EXPORT_C LHASH *CONF_load_fp(LHASH *conf, FILE *fp,long *eline)

	{

	BIO *btmp;

	LHASH *ltmp;

	if(!(btmp = BIO_new_fp(fp, BIO_NOCLOSE))) {

		CONFerr(CONF_F_CONF_LOAD_FP,ERR_R_BUF_LIB);

		return NULL;

	}

	ltmp = CONF_load_bio(conf, btmp, eline);

	BIO_free(btmp);

	return ltmp;

	}

#endif

EXPORT_C LHASH *CONF_load_bio(LHASH *conf, BIO *bp,long *eline)

	{

	CONF ctmp;

	int ret;

	CONF_set_nconf(&ctmp, conf);

	ret = NCONF_load_bio(&ctmp, bp, eline);

	if (ret)

		return ctmp.data;

	return NULL;

	}

EXPORT_C STACK_OF(CONF_VALUE) *CONF_get_section(LHASH *conf,const char *section)

	{

	if (conf == NULL)

		{

		return NULL;

		}

	else

		{

		CONF ctmp;

		CONF_set_nconf(&ctmp, conf);

		return NCONF_get_section(&ctmp, section);

		}

	}

EXPORT_C char *CONF_get_string(LHASH *conf,const char *group,const char *name)

	{

	if (conf == NULL)

		{

		return NCONF_get_string(NULL, group, name);

		}

	else

		{

		CONF ctmp;

		CONF_set_nconf(&ctmp, conf);

		return NCONF_get_string(&ctmp, group, name);

		}

	}

EXPORT_C long CONF_get_number(LHASH *conf,const char *group,const char *name)

	{

	int status;

	long result = 0;

	if (conf == NULL)

		{

		status = NCONF_get_number_e(NULL, group, name, &result);

		}

	else

		{

		CONF ctmp;

		CONF_set_nconf(&ctmp, conf);

		status = NCONF_get_number_e(&ctmp, group, name, &result);

		}

	if (status == 0)

		{

		/* This function does not believe in errors... */

		ERR_clear_error();

		}

	return result;

	}

EXPORT_C void CONF_free(LHASH *conf)

	{

	CONF ctmp;

	CONF_set_nconf(&ctmp, conf);

	NCONF_free_data(&ctmp);

	}

#ifndef OPENSSL_NO_FP_API

EXPORT_C int CONF_dump_fp(LHASH *conf, FILE *out)

	{

	BIO *btmp;

	int ret;

	if(!(btmp = BIO_new_fp(out, BIO_NOCLOSE))) {

		CONFerr(CONF_F_CONF_DUMP_FP,ERR_R_BUF_LIB);

		return 0;

	}

	ret = CONF_dump_bio(conf, btmp);

	BIO_free(btmp);

	return ret;

	}

#endif

EXPORT_C int CONF_dump_bio(LHASH *conf, BIO *out)

	{

	CONF ctmp;

	CONF_set_nconf(&ctmp, conf);

	return NCONF_dump_bio(&ctmp, out);

	}

/* The following section contains the "New CONF" functions.  They are

   completely centralised around a new CONF structure that may contain

   basically anything, but at least a method pointer and a table of data.

   These functions are also written in terms of the bridge functions used

   by the "CONF classic" functions, for consistency.  */

EXPORT_C CONF *NCONF_new(CONF_METHOD *meth)

	{

	CONF *ret;

	if (meth == NULL)

		meth = NCONF_default();

	ret = meth->create(meth);

	if (ret == NULL)

		{

		CONFerr(CONF_F_NCONF_NEW,ERR_R_MALLOC_FAILURE);

		return(NULL);

		}

	return ret;

	}

EXPORT_C void NCONF_free(CONF *conf)

	{

	if (conf == NULL)

		return;

	conf->meth->destroy(conf);

	}

EXPORT_C void NCONF_free_data(CONF *conf)

	{

	if (conf == NULL)

		return;

	conf->meth->destroy_data(conf);

	}

EXPORT_C int NCONF_load(CONF *conf, const char *file, long *eline)

	{

	if (conf == NULL)

		{

		CONFerr(CONF_F_NCONF_LOAD,CONF_R_NO_CONF);

		return 0;

		}

	return conf->meth->load(conf, file, eline);

	}

#ifndef OPENSSL_NO_FP_API

EXPORT_C int NCONF_load_fp(CONF *conf, FILE *fp,long *eline)

	{

	BIO *btmp;

	int ret;

	if(!(btmp = BIO_new_fp(fp, BIO_NOCLOSE)))

		{

		CONFerr(CONF_F_NCONF_LOAD_FP,ERR_R_BUF_LIB);

		return 0;

		}

	ret = NCONF_load_bio(conf, btmp, eline);

	BIO_free(btmp);

	return ret;

	}

#endif

EXPORT_C int NCONF_load_bio(CONF *conf, BIO *bp,long *eline)

	{

	if (conf == NULL)

		{

		CONFerr(CONF_F_NCONF_LOAD_BIO,CONF_R_NO_CONF);

		return 0;

		}

	return conf->meth->load_bio(conf, bp, eline);

	}

EXPORT_C STACK_OF(CONF_VALUE) *NCONF_get_section(const CONF *conf,const char *section)

	{

	if (conf == NULL)

		{

		CONFerr(CONF_F_NCONF_GET_SECTION,CONF_R_NO_CONF);

		return NULL;

		}

	if (section == NULL)

		{

		CONFerr(CONF_F_NCONF_GET_SECTION,CONF_R_NO_SECTION);

		return NULL;

		}

	return _CONF_get_section_values(conf, section);

	}

EXPORT_C char *NCONF_get_string(const CONF *conf,const char *group,const char *name)

	{

	char *s = _CONF_get_string(conf, group, name);

        /* Since we may get a value from an environment variable even

           if conf is NULL, let's check the value first */

        if (s) return s;

	if (conf == NULL)

		{

		CONFerr(CONF_F_NCONF_GET_STRING,

                        CONF_R_NO_CONF_OR_ENVIRONMENT_VARIABLE);

		return NULL;

		}

	CONFerr(CONF_F_NCONF_GET_STRING,

		CONF_R_NO_VALUE);

	ERR_add_error_data(4,"group=",group," name=",name);

	return NULL;

	}

EXPORT_C int NCONF_get_number_e(const CONF *conf,const char *group,const char *name,

		       long *result)

	{

	char *str;

	if (result == NULL)

		{

		CONFerr(CONF_F_NCONF_GET_NUMBER_E,ERR_R_PASSED_NULL_PARAMETER);

		return 0;

		}

	str = NCONF_get_string(conf,group,name);

	if (str == NULL)

		return 0;

	for (*result = 0;conf->meth->is_number(conf, *str);)

		{

		*result = (*result)*10 + conf->meth->to_int(conf, *str);

		str++;

		}

	return 1;

	}

#ifndef OPENSSL_NO_FP_API

EXPORT_C int NCONF_dump_fp(const CONF *conf, FILE *out)

	{

	BIO *btmp;

	int ret;

	if(!(btmp = BIO_new_fp(out, BIO_NOCLOSE))) {

		CONFerr(CONF_F_NCONF_DUMP_FP,ERR_R_BUF_LIB);

		return 0;

	}

	ret = NCONF_dump_bio(conf, btmp);

	BIO_free(btmp);

	return ret;

	}

#endif

EXPORT_C int NCONF_dump_bio(const CONF *conf, BIO *out)

	{

	if (conf == NULL)

		{

		CONFerr(CONF_F_NCONF_DUMP_BIO,CONF_R_NO_CONF);

		return 0;

		}

	return conf->meth->dump(conf, out);

	}

/* This function should be avoided */

#if 0

long NCONF_get_number(CONF *conf,char *group,char *name)

	{

	int status;

	long ret=0;

	status = NCONF_get_number_e(conf, group, name, &ret);

	if (status == 0)

		{

		/* This function does not believe in errors... */

		ERR_get_error();

		}

	return ret;

	}

#endif