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b_dump.c

/* crypto/bio/b_dump.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.]
 */

/* 
 * Stolen from tjh's ssl/ssl_trc.c stuff.
 */

#include <stdio.h>
#include "cryptlib.h"
#include "bio_lcl.h"

#define TRUNCATE
#define DUMP_WIDTH      16
#define DUMP_WIDTH_LESS_INDENT(i) (DUMP_WIDTH-((i-(i>6?6:i)+3)/4))

int BIO_dump_cb(int (*cb)(const void *data, size_t len, void *u),
      void *u, const char *s, int len)
      {
      return BIO_dump_indent_cb(cb, u, s, len, 0);
      }

int BIO_dump_indent_cb(int (*cb)(const void *data, size_t len, void *u),
      void *u, const char *s, int len, int indent)
      {
      int ret=0;
      char buf[288+1],tmp[20],str[128+1];
      int i,j,rows,trc;
      unsigned char ch;
      int dump_width;

      trc=0;

#ifdef TRUNCATE
      for(; (len > 0) && ((s[len-1] == ' ') || (s[len-1] == '\0')); len--)
            trc++;
#endif

      if (indent < 0)
            indent = 0;
      if (indent)
            {
            if (indent > 128) indent=128;
            memset(str,' ',indent);
            }
      str[indent]='\0';

      dump_width=DUMP_WIDTH_LESS_INDENT(indent);
      rows=(len/dump_width);
      if ((rows*dump_width)<len)
            rows++;
      for(i=0;i<rows;i++)
            {
            buf[0]='\0';      /* start with empty string */
            BUF_strlcpy(buf,str,sizeof buf);
            BIO_snprintf(tmp,sizeof tmp,"%04x - ",i*dump_width);
            BUF_strlcat(buf,tmp,sizeof buf);
            for(j=0;j<dump_width;j++)
                  {
                  if (((i*dump_width)+j)>=len)
                        {
                        BUF_strlcat(buf,"   ",sizeof buf);
                        }
                  else
                        {
                        ch=((unsigned char)*(s+i*dump_width+j)) & 0xff;
                        BIO_snprintf(tmp,sizeof tmp,"%02x%c",ch,
                              j==7?'-':' ');
                        BUF_strlcat(buf,tmp,sizeof buf);
                        }
                  }
            BUF_strlcat(buf,"  ",sizeof buf);
            for(j=0;j<dump_width;j++)
                  {
                  if (((i*dump_width)+j)>=len)
                        break;
                  ch=((unsigned char)*(s+i*dump_width+j)) & 0xff;
#ifndef CHARSET_EBCDIC
                  BIO_snprintf(tmp,sizeof tmp,"%c",
                        ((ch>=' ')&&(ch<='~'))?ch:'.');
#else
                  BIO_snprintf(tmp,sizeof tmp,"%c",
                        ((ch>=os_toascii[' '])&&(ch<=os_toascii['~']))
                        ? os_toebcdic[ch]
                        : '.');
#endif
                  BUF_strlcat(buf,tmp,sizeof buf);
                  }
            BUF_strlcat(buf,"\n",sizeof buf);
            /* if this is the last call then update the ddt_dump thing so
             * that we will move the selection point in the debug window
             */
            ret+=cb((void *)buf,strlen(buf),u);
            }
#ifdef TRUNCATE
      if (trc > 0)
            {
            BIO_snprintf(buf,sizeof buf,"%s%04x - <SPACES/NULS>\n",str,
                  len+trc);
            ret+=cb((void *)buf,strlen(buf),u);
            }
#endif
      return(ret);
      }

#ifndef OPENSSL_NO_FP_API
static int write_fp(const void *data, size_t len, void *fp)
      {
      return UP_fwrite(data, len, 1, fp);
      }
int BIO_dump_fp(FILE *fp, const char *s, int len)
      {
      return BIO_dump_cb(write_fp, fp, s, len);
      }
int BIO_dump_indent_fp(FILE *fp, const char *s, int len, int indent)
      {
      return BIO_dump_indent_cb(write_fp, fp, s, len, indent);
      }
#endif

static int write_bio(const void *data, size_t len, void *bp)
      {
      return BIO_write((BIO *)bp, (const char *)data, len);
      }
int BIO_dump(BIO *bp, const char *s, int len)
      {
      return BIO_dump_cb(write_bio, bp, s, len);
      }
int BIO_dump_indent(BIO *bp, const char *s, int len, int indent)
      {
      return BIO_dump_indent_cb(write_bio, bp, s, len, indent);
      }


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