crypto/bio/b_dump.c

   1 /* crypto/bio/b_dump.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 /*
  60  * Stolen from tjh's ssl/ssl_trc.c stuff.
  61  */
  62
  63 #include <stdio.h>
  64 #include "cryptlib.h"
  65 #include "bio.h"
  66
  67 #define TRUNCATE
  68 #define DUMP_WIDTH      16
  69
  70 int BIO_dump(BIO *bio, const char *s, int len)
  71 {
  72   int ret=0;
  73   char buf[160+1],tmp[20];
  74   int i,j,rows,trunc;
  75   unsigned char ch;
  76
  77   trunc=0;
  78
  79 #ifdef TRUNCATE
  80   for(; (len > 0) && ((s[len-1] == ' ') || (s[len-1] == '\0')); len--)
  81     trunc++;
  82 #endif
  83
  84   rows=(len/DUMP_WIDTH);
  85   if ((rows*DUMP_WIDTH)<len)
  86     rows++;
  87   for(i=0;i<rows;i++) {
  88     buf[0]='\0';        /* start with empty string */
  89     sprintf(tmp,"%04x - ",i*DUMP_WIDTH);
  90     strcpy(buf,tmp);
  91     for(j=0;j<DUMP_WIDTH;j++) {
  92       if (((i*DUMP_WIDTH)+j)>=len) {
  93         strcat(buf,"   ");
  94       } else {
  95         ch=((unsigned char)*((char *)(s)+i*DUMP_WIDTH+j)) & 0xff;
  96         sprintf(tmp,"%02x%c",ch,j==7?'-':' ');
  97         strcat(buf,tmp);
  98       }
  99     }
 100     strcat(buf,"  ");
 101     for(j=0;j<DUMP_WIDTH;j++) {
 102       if (((i*DUMP_WIDTH)+j)>=len)
 103         break;
 104       ch=((unsigned char)*((char *)(s)+i*DUMP_WIDTH+j)) & 0xff;
 105       sprintf(tmp,"%c",((ch>=' ')&&(ch<='~'))?ch:'.');
 106       strcat(buf,tmp);
 107     }
 108     strcat(buf,"\n");
 109     /* if this is the last call then update the ddt_dump thing so that
 110      * we will move the selection point in the debug window
 111      */
 112     ret+=BIO_write(bio,(char *)buf,strlen(buf));
 113   }
 114 #ifdef TRUNCATE
 115   if (trunc > 0) {
 116     sprintf(buf,"%04x - <SPACES/NULS>\n",len+trunc);
 117     ret+=BIO_write(bio,(char *)buf,strlen(buf));
 118   }
 119 #endif
 120   return(ret);
 121 }
 122