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b64.c

/* demos/b64.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/apps.h"
#include <openssl/buffer.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/x509.h>
#include <openssl/pem.h>

#undef SIZE
#undef BSIZE
#undef PROG

#define SIZE      (512)
#define BSIZE     (8*1024)
#define     PROG  enc_main

int main(argc,argv)
int argc;
char **argv;
      {
      char *strbuf=NULL;
      unsigned char *buff=NULL,*bufsize=NULL;
      int bsize=BSIZE,verbose=0;
      int ret=1,inl;
      char *str=NULL;
      char *hkey=NULL,*hiv=NULL;
      int enc=1,printkey=0,i,base64=0;
      int debug=0;
      EVP_CIPHER *cipher=NULL,*c;
      char *inf=NULL,*outf=NULL;
      BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL;
#define PROG_NAME_SIZE  39


      apps_startup();

      if (bio_err == NULL)
            if ((bio_err=BIO_new(BIO_s_file())) != NULL)
                  BIO_set_fp(bio_err,stderr,BIO_NOCLOSE);

      base64=1;

      argc--;
      argv++;
      while (argc >= 1)
            {
            if    (strcmp(*argv,"-e") == 0)
                  enc=1;
            if (strcmp(*argv,"-in") == 0)
                  {
                  if (--argc < 1) goto bad;
                  inf= *(++argv);
                  }
            else if (strcmp(*argv,"-out") == 0)
                  {
                  if (--argc < 1) goto bad;
                  outf= *(++argv);
                  }
            else if     (strcmp(*argv,"-d") == 0)
                  enc=0;
            else if     (strcmp(*argv,"-v") == 0)
                  verbose=1;
            else if     (strcmp(*argv,"-debug") == 0)
                  debug=1;
            else if (strcmp(*argv,"-bufsize") == 0)
                  {
                  if (--argc < 1) goto bad;
                  bufsize=(unsigned char *)*(++argv);
                  }
            else
                  {
                  BIO_printf(bio_err,"unknown option '%s'\n",*argv);
bad:
                  BIO_printf(bio_err,"options are\n");
                  BIO_printf(bio_err,"%-14s input file\n","-in <file>");
                  BIO_printf(bio_err,"%-14s output file\n","-out <file>");
                  BIO_printf(bio_err,"%-14s encode\n","-e");
                  BIO_printf(bio_err,"%-14s decode\n","-d");
                  BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");

                  goto end;
                  }
            argc--;
            argv++;
            }

      if (bufsize != NULL)
            {
            int i;
            unsigned long n;

            for (n=0; *bufsize; bufsize++)
                  {
                  i= *bufsize;
                  if ((i <= '9') && (i >= '0'))
                        n=n*10+i-'0';
                  else if (i == 'k')
                        {
                        n*=1024;
                        bufsize++;
                        break;
                        }
                  }
            if (*bufsize != '\0')
                  {
                  BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
                  goto end;
                  }

            /* It must be large enough for a base64 encoded line */
            if (n < 80) n=80;

            bsize=(int)n;
            if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
            }

      strbuf=OPENSSL_malloc(SIZE);
      buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
      if ((buff == NULL) || (strbuf == NULL))
            {
            BIO_printf(bio_err,"OPENSSL_malloc failure\n");
            goto end;
            }

      in=BIO_new(BIO_s_file());
      out=BIO_new(BIO_s_file());
      if ((in == NULL) || (out == NULL))
            {
            ERR_print_errors(bio_err);
            goto end;
            }
      if (debug)
            {
            BIO_set_callback(in,BIO_debug_callback);
            BIO_set_callback(out,BIO_debug_callback);
            BIO_set_callback_arg(in,bio_err);
            BIO_set_callback_arg(out,bio_err);
            }

      if (inf == NULL)
            BIO_set_fp(in,stdin,BIO_NOCLOSE);
      else
            {
            if (BIO_read_filename(in,inf) <= 0)
                  {
                  perror(inf);
                  goto end;
                  }
            }

      if (outf == NULL)
            BIO_set_fp(out,stdout,BIO_NOCLOSE);
      else
            {
            if (BIO_write_filename(out,outf) <= 0)
                  {
                  perror(outf);
                  goto end;
                  }
            }

      rbio=in;
      wbio=out;

      if (base64)
            {
            if ((b64=BIO_new(BIO_f_base64())) == NULL)
                  goto end;
            if (debug)
                  {
                  BIO_set_callback(b64,BIO_debug_callback);
                  BIO_set_callback_arg(b64,bio_err);
                  }
            if (enc)
                  wbio=BIO_push(b64,wbio);
            else
                  rbio=BIO_push(b64,rbio);
            }

      for (;;)
            {
            inl=BIO_read(rbio,(char *)buff,bsize);
            if (inl <= 0) break;
            if (BIO_write(wbio,(char *)buff,inl) != inl)
                  {
                  BIO_printf(bio_err,"error writing output file\n");
                  goto end;
                  }
            }
      BIO_flush(wbio);

      ret=0;
      if (verbose)
            {
            BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
            BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
            }
end:
      if (strbuf != NULL) OPENSSL_free(strbuf);
      if (buff != NULL) OPENSSL_free(buff);
      if (in != NULL) BIO_free(in);
      if (out != NULL) BIO_free(out);
      if (benc != NULL) BIO_free(benc);
      if (b64 != NULL) BIO_free(b64);
      EXIT(ret);
      }


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