A local copy of OpenSSL from GitHub
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/*
* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
/*
* Stolen from tjh's ssl/ssl_trc.c stuff.
*/
#include <stdio.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++) {
OPENSSL_strlcpy(buf, str, sizeof buf);
BIO_snprintf(tmp, sizeof tmp, "%04x - ", i * dump_width);
OPENSSL_strlcat(buf, tmp, sizeof buf);
for (j = 0; j < dump_width; j++) {
if (((i * dump_width) + j) >= len) {
OPENSSL_strlcat(buf, " ", sizeof buf);
} else {
ch = ((unsigned char)*(s + i * dump_width + j)) & 0xff;
BIO_snprintf(tmp, sizeof tmp, "%02x%c", ch,
j == 7 ? '-' : ' ');
OPENSSL_strlcat(buf, tmp, sizeof buf);
}
}
OPENSSL_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
OPENSSL_strlcat(buf, tmp, sizeof buf);
}
OPENSSL_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_STDIO
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);
}
int BIO_hex_string(BIO *out, int indent, int width, unsigned char *data,
int datalen)
{
int i, j = 0;
if (datalen < 1)
return 1;
for (i = 0; i < datalen - 1; i++) {
if (i && !j)
BIO_printf(out, "%*s", indent, "");
BIO_printf(out, "%02X:", data[i]);
j = (j + 1) % width;
if (!j)
BIO_printf(out, "\n");
}
if (i && !j)
BIO_printf(out, "%*s", indent, "");
BIO_printf(out, "%02X", data[datalen - 1]);
return 1;
}