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 <openssl/bio.h>
  66
  67 #define TRUNCATE
  68 #define DUMP_WIDTH      16
  69 #define DUMP_WIDTH_LESS_INDENT(i) (DUMP_WIDTH-((i-(i>6?6:i)+3)/4))
  70
  71 int BIO_dump(BIO *bio, const char *s, int len)
  72         {
  73         return BIO_dump_indent(bio, s, len, 0);
  74         }
  75
  76 int BIO_dump_indent(BIO *bio, const char *s, int len, int indent)
  77         {
  78         int ret=0;
  79         char buf[288+1],tmp[20],str[128+1];
  80         int i,j,rows,trc;
  81         unsigned char ch;
  82         int dump_width;
  83
  84         trc=0;
  85
  86 #ifdef TRUNCATE
  87         for(; (len > 0) && ((s[len-1] == ' ') || (s[len-1] == '\0')); len--)
  88                 trc++;
  89 #endif
  90
  91         if (indent < 0)
  92                 indent = 0;
  93         if (indent)
  94                 {
  95                 if (indent > 128) indent=128;
  96                 memset(str,' ',indent);
  97                 }
  98         str[indent]='\0';
  99
 100         dump_width=DUMP_WIDTH_LESS_INDENT(indent);
 101         rows=(len/dump_width);
 102         if ((rows*dump_width)<len)
 103                 rows++;
 104         for(i=0;i<rows;i++)
 105                 {
 106                 buf[0]='\0';    /* start with empty string */
 107                 BUF_strlcpy(buf,str,sizeof buf);
 108                 BIO_snprintf(tmp,sizeof tmp,"%04x - ",i*dump_width);
 109                 BUF_strlcat(buf,tmp,sizeof buf);
 110                 for(j=0;j<dump_width;j++)
 111                         {
 112                         if (((i*dump_width)+j)>=len)
 113                                 {
 114                                 BUF_strlcat(buf,"   ",sizeof buf);
 115                                 }
 116                         else
 117                                 {
 118                                 ch=((unsigned char)*(s+i*dump_width+j)) & 0xff;
 119                                 BIO_snprintf(tmp,sizeof tmp,"%02x%c",ch,
 120                                          j==7?'-':' ');
 121                                 BUF_strlcat(buf,tmp,sizeof buf);
 122                                 }
 123                         }
 124                 BUF_strlcat(buf,"  ",sizeof buf);
 125                 for(j=0;j<dump_width;j++)
 126                         {
 127                         if (((i*dump_width)+j)>=len)
 128                                 break;
 129                         ch=((unsigned char)*(s+i*dump_width+j)) & 0xff;
 130 #ifndef CHARSET_EBCDIC
 131                         BIO_snprintf(tmp,sizeof tmp,"%c",
 132                                  ((ch>=' ')&&(ch<='~'))?ch:'.');
 133 #else
 134                         BIO_snprintf(tmp,sizeof tmp,"%c",
 135                                  ((ch>=os_toascii[' '])&&(ch<=os_toascii['~']))
 136                                  ? os_toebcdic[ch]
 137                                  : '.');
 138 #endif
 139                         BUF_strlcat(buf,tmp,sizeof buf);
 140                         }
 141                 BUF_strlcat(buf,"\n",sizeof buf);
 142                 /* if this is the last call then update the ddt_dump thing so that
 143                  * we will move the selection point in the debug window
 144                  */
 145                 ret+=BIO_write(bio,(char *)buf,strlen(buf));
 146                 }
 147 #ifdef TRUNCATE
 148         if (trc > 0)
 149                 {
 150                 BIO_snprintf(buf,sizeof buf,"%s%04x - <SPACES/NULS>\n",str,
 151                              len+trc);
 152                 ret+=BIO_write(bio,(char *)buf,strlen(buf));
 153                 }
 154 #endif
 155         return(ret);
 156         }