/* apps/sess_id.c */

/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)

 * All rights reserved.

 *

 * This package is an SSL implementation written

 * by Eric Young (eay@cryptsoft.com).

 * The implementation was written so as to conform with Netscapes SSL.

 * 

 * This library is free for commercial and non-commercial use as long as

 * the following conditions are aheared to.  The following conditions

 * apply to all code found in this distribution, be it the RC4, RSA,

 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation

 * included with this distribution is covered by the same copyright terms

 * except that the holder is Tim Hudson (tjh@cryptsoft.com).

 * 

 * Copyright remains Eric Young's, and as such any Copyright notices in

 * the code are not to be removed.

 * If this package is used in a product, Eric Young should be given attribution

 * as the author of the parts of the library used.

 * This can be in the form of a textual message at program startup or

 * in documentation (online or textual) provided with the package.

 * 

 * 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 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 acknowledgement:

 *    "This product includes cryptographic software written by

 *     Eric Young (eay@cryptsoft.com)"

 *    The word 'cryptographic' can be left out if the rouines from the library

 *    being used are not cryptographic related :-).

 * 4. If you include any Windows specific code (or a derivative thereof) from 

 *    the apps directory (application code) you must include an acknowledgement:

 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

 * 

 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND

 * ANY EXPRESS 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 AUTHOR OR 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.

 * 

 * The licence and distribution terms for any publically available version or

 * derivative of this code cannot be changed.  i.e. this code cannot simply be

 * copied and put under another distribution licence

 * [including the GNU Public Licence.]

 */

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "apps.h"

#include <openssl/bio.h>

#include <openssl/err.h>

#include <openssl/x509.h>

#include <openssl/pem.h>

#include <openssl/ssl.h>

#undef PROG

#define PROG	sess_id_main

static const char *sess_id_usage[]={

"usage: sess_id args\n",

"\n",

" -inform arg     - input format - default PEM (DER or PEM)\n",

" -outform arg    - output format - default PEM\n",

" -in arg         - input file - default stdin\n",

" -out arg        - output file - default stdout\n",

" -text           - print ssl session id details\n",

" -cert           - output certificate \n",

" -noout          - no CRL output\n",

" -context arg    - set the session ID context\n",

NULL

};

static SSL_SESSION *load_sess_id(char *file, int format);

int MAIN(int, char **);

int MAIN(int argc, char **argv)

	{

	SSL_SESSION *x=NULL;

	int ret=1,i,num,badops=0;

	BIO *out=NULL;

	int informat,outformat;

	char *infile=NULL,*outfile=NULL,*context=NULL;

	int cert=0,noout=0,text=0;

	const char **pp;

	apps_startup();

	if (bio_err == NULL)

		if ((bio_err=BIO_new(BIO_s_file())) != NULL)

			BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);

	informat=FORMAT_PEM;

	outformat=FORMAT_PEM;

	argc--;

	argv++;

	num=0;

	while (argc >= 1)

		{

		if 	(strcmp(*argv,"-inform") == 0)

			{

			if (--argc < 1) goto bad;

			informat=str2fmt(*(++argv));

			}

		else if (strcmp(*argv,"-outform") == 0)

			{

			if (--argc < 1) goto bad;

			outformat=str2fmt(*(++argv));

			}

		else if (strcmp(*argv,"-in") == 0)

			{

			if (--argc < 1) goto bad;

			infile= *(++argv);

			}

		else if (strcmp(*argv,"-out") == 0)

			{

			if (--argc < 1) goto bad;

			outfile= *(++argv);

			}

		else if (strcmp(*argv,"-text") == 0)

			text= ++num;

		else if (strcmp(*argv,"-cert") == 0)

			cert= ++num;

		else if (strcmp(*argv,"-noout") == 0)

			noout= ++num;

		else if (strcmp(*argv,"-context") == 0)

		    {

		    if(--argc < 1) goto bad;

		    context=*++argv;

		    }

		else

			{

			BIO_printf(bio_err,"unknown option %s\n",*argv);

			badops=1;

			break;

			}

		argc--;

		argv++;

		}

	if (badops)

		{

bad:

		for (pp=sess_id_usage; (*pp != NULL); pp++)

			BIO_printf(bio_err,"%s",*pp);

		goto end;

		}

	ERR_load_crypto_strings();

	x=load_sess_id(infile,informat);

	if (x == NULL) { goto end; }

	if(context)

	    {

	    x->sid_ctx_length=strlen(context);

	    if(x->sid_ctx_length > SSL_MAX_SID_CTX_LENGTH)

		{

		BIO_printf(bio_err,"Context too long\n");

		goto end;

		}

	    memcpy(x->sid_ctx,context,x->sid_ctx_length);

	    }

#ifdef undef

	/* just testing for memory leaks :-) */

	{

	SSL_SESSION *s;

	char buf[1024*10],*p;

	int i;

	s=SSL_SESSION_new();

	p= &buf;

	i=i2d_SSL_SESSION(x,&p);

	p= &buf;

	d2i_SSL_SESSION(&s,&p,(long)i);

	p= &buf;

	d2i_SSL_SESSION(&s,&p,(long)i);

	p= &buf;

	d2i_SSL_SESSION(&s,&p,(long)i);

	SSL_SESSION_free(s);

	}

#endif

	if (!noout || text)

		{

		out=BIO_new(BIO_s_file());

		if (out == NULL)

			{

			ERR_print_errors(bio_err);

			goto end;

			}

		if (outfile == NULL)

			{

			BIO_set_fp(out,stdout,BIO_NOCLOSE);

#ifdef OPENSSL_SYS_VMS

			{

			BIO *tmpbio = BIO_new(BIO_f_linebuffer());

			out = BIO_push(tmpbio, out);

			}

#endif

			}

		else

			{

			if (BIO_write_filename(out,outfile) <= 0)

				{

				perror(outfile);

				goto end;

				}

			}

		}

	if (text)

		{

		SSL_SESSION_print(out,x);

		if (cert)

			{

			if (x->peer == NULL)

				BIO_puts(out,"No certificate present\n");

			else

				X509_print(out,x->peer);

			}

		}

	if (!noout && !cert)

		{

		if 	(outformat == FORMAT_ASN1)

			i=i2d_SSL_SESSION_bio(out,x);

		else if (outformat == FORMAT_PEM)

			i=PEM_write_bio_SSL_SESSION(out,x);

		else	{

			BIO_printf(bio_err,"bad output format specified for outfile\n");

			goto end;

			}

		if (!i) {

			BIO_printf(bio_err,"unable to write SSL_SESSION\n");

			goto end;

			}

		}

	else if (!noout && (x->peer != NULL)) /* just print the certificate */

		{

		if 	(outformat == FORMAT_ASN1)

			i=(int)i2d_X509_bio(out,x->peer);

		else if (outformat == FORMAT_PEM)

			i=PEM_write_bio_X509(out,x->peer);

		else	{

			BIO_printf(bio_err,"bad output format specified for outfile\n");

			goto end;

			}

		if (!i) {

			BIO_printf(bio_err,"unable to write X509\n");

			goto end;

			}

		}

	ret=0;

end:

	if (out != NULL) BIO_free_all(out);

	if (x != NULL) SSL_SESSION_free(x);

	apps_shutdown();

	OPENSSL_EXIT(ret);

	}

static SSL_SESSION *load_sess_id(char *infile, int format)

	{

	SSL_SESSION *x=NULL;

	BIO *in=NULL;

	in=BIO_new(BIO_s_file());

	if (in == NULL)

		{

		ERR_print_errors(bio_err);

		goto end;

		}

	if (infile == NULL)

		BIO_set_fp(in,stdin,BIO_NOCLOSE);

	else

		{

		if (BIO_read_filename(in,infile) <= 0)

			{

			perror(infile);

			goto end;

			}

		}

	if 	(format == FORMAT_ASN1)

		x=d2i_SSL_SESSION_bio(in,NULL);

	else if (format == FORMAT_PEM)

		x=PEM_read_bio_SSL_SESSION(in,NULL,NULL,NULL);

	else	{

		BIO_printf(bio_err,"bad input format specified for input crl\n");

		goto end;

		}

	if (x == NULL)

		{

		BIO_printf(bio_err,"unable to load SSL_SESSION\n");

		ERR_print_errors(bio_err);

		goto end;

		}

end:

	if (in != NULL) BIO_free(in);

	return(x);

	}