GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/openssl/gendh.c Lines: 0 56 0.0 %
Date: 2016-12-06 Branches: 0 36 0.0 %

Line Branch Exec Source
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/* $OpenBSD: gendh.c,v 1.7 2015/10/17 15:00:11 doug Exp $ */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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 * All rights reserved.
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 *
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 * This package is an SSL implementation written
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 * by Eric Young (eay@cryptsoft.com).
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 * The implementation was written so as to conform with Netscapes SSL.
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 *
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 * This library is free for commercial and non-commercial use as long as
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 * the following conditions are aheared to.  The following conditions
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 * apply to all code found in this distribution, be it the RC4, RSA,
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 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
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 * included with this distribution is covered by the same copyright terms
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 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
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 *
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 * Copyright remains Eric Young's, and as such any Copyright notices in
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 * the code are not to be removed.
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 * If this package is used in a product, Eric Young should be given attribution
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 * as the author of the parts of the library used.
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 * This can be in the form of a textual message at program startup or
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 * in documentation (online or textual) provided with the package.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. All advertising materials mentioning features or use of this software
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 *    must display the following acknowledgement:
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 *    "This product includes cryptographic software written by
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 *     Eric Young (eay@cryptsoft.com)"
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 *    The word 'cryptographic' can be left out if the rouines from the library
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 *    being used are not cryptographic related :-).
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 * 4. If you include any Windows specific code (or a derivative thereof) from
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 *    the apps directory (application code) you must include an acknowledgement:
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 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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 *
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 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 *
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 * The licence and distribution terms for any publically available version or
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 * derivative of this code cannot be changed.  i.e. this code cannot simply be
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 * copied and put under another distribution licence
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 * [including the GNU Public Licence.]
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 */
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#include <openssl/opensslconf.h>
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/* Until the key-gen callbacks are modified to use newer prototypes, we allow
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 * deprecated functions for openssl-internal code */
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#ifdef OPENSSL_NO_DEPRECATED
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#undef OPENSSL_NO_DEPRECATED
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#endif
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#ifndef OPENSSL_NO_DH
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <limits.h>
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#include <stdio.h>
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#include <string.h>
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#include "apps.h"
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#include <openssl/bio.h>
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#include <openssl/bn.h>
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#include <openssl/dh.h>
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#include <openssl/err.h>
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#include <openssl/pem.h>
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#include <openssl/x509.h>
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#define DEFBITS	512
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static int dh_cb(int p, int n, BN_GENCB * cb);
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static struct {
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	int g;
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	char *outfile;
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} gendh_config;
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static struct option gendh_options[] = {
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	{
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		.name = "2",
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		.desc = "Generate DH parameters with a generator value of 2 "
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		    "(default)",
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		.type = OPTION_VALUE,
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		.value = 2,
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		.opt.value = &gendh_config.g,
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	},
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	{
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		.name = "5",
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		.desc = "Generate DH parameters with a generator value of 5",
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		.type = OPTION_VALUE,
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		.value = 5,
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		.opt.value = &gendh_config.g,
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	},
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	{
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		.name = "out",
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		.argname = "file",
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		.desc = "Output file (default stdout)",
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		.type = OPTION_ARG,
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		.opt.arg = &gendh_config.outfile,
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	},
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	{ NULL },
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};
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static void
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gendh_usage(void)
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{
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	fprintf(stderr,
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	    "usage: gendh [-2 | -5] [-out file] [numbits]\n\n");
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	options_usage(gendh_options);
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}
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int
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gendh_main(int argc, char **argv)
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{
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	BN_GENCB cb;
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	DH *dh = NULL;
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	int ret = 1, numbits = DEFBITS;
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	BIO *out = NULL;
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	char *strbits = NULL;
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	if (single_execution) {
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		if (pledge("stdio rpath wpath cpath", NULL) == -1) {
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			perror("pledge");
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			exit(1);
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		}
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	}
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	BN_GENCB_set(&cb, dh_cb, bio_err);
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	memset(&gendh_config, 0, sizeof(gendh_config));
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	gendh_config.g = 2;
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	if (options_parse(argc, argv, gendh_options, &strbits, NULL) != 0) {
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		gendh_usage();
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		goto end;
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	}
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	if (strbits != NULL) {
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		const char *errstr;
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		numbits = strtonum(strbits, 0, INT_MAX, &errstr);
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		if (errstr) {
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			fprintf(stderr, "Invalid number of bits: %s\n", errstr);
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			goto end;
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		}
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	}
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	out = BIO_new(BIO_s_file());
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	if (out == NULL) {
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		ERR_print_errors(bio_err);
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		goto end;
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	}
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	if (gendh_config.outfile == NULL) {
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		BIO_set_fp(out, stdout, BIO_NOCLOSE);
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	} else {
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		if (BIO_write_filename(out, gendh_config.outfile) <= 0) {
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			perror(gendh_config.outfile);
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			goto end;
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		}
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	}
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	BIO_printf(bio_err, "Generating DH parameters, %d bit long safe prime,"
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	    " generator %d\n", numbits, gendh_config.g);
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	BIO_printf(bio_err, "This is going to take a long time\n");
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	if (((dh = DH_new()) == NULL) ||
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	    !DH_generate_parameters_ex(dh, numbits, gendh_config.g, &cb))
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		goto end;
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	if (!PEM_write_bio_DHparams(out, dh))
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		goto end;
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	ret = 0;
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end:
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	if (ret != 0)
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		ERR_print_errors(bio_err);
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	if (out != NULL)
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		BIO_free_all(out);
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	if (dh != NULL)
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		DH_free(dh);
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	return (ret);
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}
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static int
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dh_cb(int p, int n, BN_GENCB * cb)
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{
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	char c = '*';
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	if (p == 0)
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		c = '.';
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	if (p == 1)
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		c = '+';
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	if (p == 2)
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		c = '*';
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	if (p == 3)
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		c = '\n';
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	BIO_write(cb->arg, &c, 1);
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	(void) BIO_flush(cb->arg);
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	return 1;
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}
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#endif