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sess_id.c
/* 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);
      }


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