source: trunk/sys/libcrypto/b_dump.c @ 249

/* 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 <openssl/cryptlib.h>
#include <openssl/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);
        }