Generate correct error reasons strings for SYSerr.

 Changes between 0.9.5 and 0.9.6  [XX XXX 2000]

  *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table

     using strerror.  Previously, ERR_reason_error_string() returned

     library names as reason strings for SYSerr; but SYSerr is a special

     case where small numbers are errno values, not library numbers.

     [Bodo Moeller]

  *) Add '-dsaparam' option to 'openssl dhparam' application.  This

     converts DSA parameters into DH parameters. (When creating parameters,

     DSA_generate_parameters is used.)

		BIO_printf(bio_err," -outform arg    output format - one of DER NET PEM\n");

		BIO_printf(bio_err," -in arg         input file\n");

		BIO_printf(bio_err," -passin arg     input file pass phrase source\n");

		BIO_printf(bio_err," -in arg         input file\n");

		BIO_printf(bio_err," -out arg        output file\n");

		BIO_printf(bio_err," -passout arg    output file pass phrase source\n");

		BIO_printf(bio_err," -des            encrypt PEM output with cbc des\n");

 * copied and put under another distribution licence

 * [including the GNU Public Licence.]

 */

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

 * Copyright (c) 1998-2000 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

 *    openssl-core@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 <stdarg.h>

#include <string.h>

#include <openssl/lhash.h>

#include <openssl/crypto.h>

#include "cryptlib.h"

{0,NULL},

	};

#define NUM_SYS_STR_REASONS 127

#define LEN_SYS_STR_REASON 32

static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];

/* SYS_str_reasons is filled with copies of strerror() results at

 * initialization.

 * 'errno' values up to 127 should cover all usual errors,

 * others will be displayed numerically by ERR_error_string.

 * It is crucial that we have something for each reason code

 * that occurs in ERR_str_reasons, or bogus reason strings

 * will be returned for SYSerr(), which always gets an errno

 * value and never one of those 'standard' reason codes. */

static void build_SYS_str_reasons()

	{

	/* Malloc cannot be used here, use static storage instead */

	static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON];

	int i;

	CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH);

	for (i = 1; i <= NUM_SYS_STR_REASONS; i++)

		{

		ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];

		str->error = (unsigned long)i;

		if (str->string == NULL)

			{

			char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]);

			char *src = strerror(i);

			if (src != NULL)

				{

				strncpy(*dest, src, sizeof *dest);

				(*dest)[sizeof *dest - 1] = '\0';

				str->string = *dest;

				}

			}

		if (str->string == NULL)

			str->string = "unknown";

		}

	/* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL},

	 * as required by ERR_load_strings. */

	CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);

	}

#endif

#define err_clear_data(p,i) \

			CRYPTO_w_unlock(CRYPTO_LOCK_ERR);

			return;

			}

		init=0;

		CRYPTO_w_unlock(CRYPTO_LOCK_ERR);

#ifndef NO_ERR

		ERR_load_strings(0,ERR_str_libraries);

		ERR_load_strings(0,ERR_str_reasons);

		ERR_load_strings(ERR_LIB_SYS,ERR_str_functs);

		build_SYS_str_reasons();

		ERR_load_strings(ERR_LIB_SYS,SYS_str_reasons);

#endif

		init=0;

		}

	}