GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/asn1/t_pkey.c Lines: 27 34 79.4 %
Date: 2017-11-13 Branches: 20 28 71.4 %

Line Branch Exec Source
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/* $OpenBSD: t_pkey.c,v 1.16 2014/07/11 08:44:47 jsing Exp $ */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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 * All rights reserved.
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 *
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 * This package is an SSL implementation written
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 * by Eric Young (eay@cryptsoft.com).
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 * The implementation was written so as to conform with Netscapes SSL.
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 *
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 * This library is free for commercial and non-commercial use as long as
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 * the following conditions are aheared to.  The following conditions
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 * apply to all code found in this distribution, be it the RC4, RSA,
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 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
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 * included with this distribution is covered by the same copyright terms
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 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
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 *
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 * Copyright remains Eric Young's, and as such any Copyright notices in
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 * the code are not to be removed.
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 * If this package is used in a product, Eric Young should be given attribution
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 * as the author of the parts of the library used.
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 * This can be in the form of a textual message at program startup or
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 * in documentation (online or textual) provided with the package.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. All advertising materials mentioning features or use of this software
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 *    must display the following acknowledgement:
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 *    "This product includes cryptographic software written by
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 *     Eric Young (eay@cryptsoft.com)"
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 *    The word 'cryptographic' can be left out if the rouines from the library
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 *    being used are not cryptographic related :-).
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 * 4. If you include any Windows specific code (or a derivative thereof) from
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 *    the apps directory (application code) you must include an acknowledgement:
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 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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 *
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 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 *
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 * The licence and distribution terms for any publically available version or
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 * derivative of this code cannot be changed.  i.e. this code cannot simply be
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 * copied and put under another distribution licence
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 * [including the GNU Public Licence.]
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 */
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#include <stdio.h>
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#include <openssl/bn.h>
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#include <openssl/buffer.h>
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#include <openssl/objects.h>
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int
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ASN1_bn_print(BIO *bp, const char *number, const BIGNUM *num,
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    unsigned char *buf, int off)
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{
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	int n, i;
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	const char *neg;
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	if (num == NULL)
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		return (1);
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	neg = (BN_is_negative(num)) ? "-" : "";
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	if (!BIO_indent(bp, off, 128))
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		return 0;
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	if (BN_is_zero(num)) {
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		if (BIO_printf(bp, "%s 0\n", number) <= 0)
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			return 0;
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		return 1;
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	}
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	if (BN_num_bytes(num) <= BN_BYTES) {
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		if (BIO_printf(bp, "%s %s%lu (%s0x%lx)\n", number, neg,
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		    (unsigned long)num->d[0], neg,
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		    (unsigned long)num->d[0]) <= 0)
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			return (0);
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	} else {
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		buf[0] = 0;
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		if (BIO_printf(bp, "%s%s", number,
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		    (neg[0] == '-') ? " (Negative)" : "") <= 0)
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			return (0);
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		n = BN_bn2bin(num, &buf[1]);
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		if (buf[1] & 0x80)
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			n++;
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		else
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			buf++;
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		for (i = 0; i < n; i++) {
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			if ((i % 15) == 0) {
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				if (BIO_puts(bp, "\n") <= 0 ||
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				    !BIO_indent(bp, off + 4, 128))
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					return 0;
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			}
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			if (BIO_printf(bp, "%02x%s", buf[i],
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			    ((i + 1) == n) ? "" : ":") <= 0)
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				return (0);
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		}
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		if (BIO_write(bp, "\n", 1) <= 0)
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			return (0);
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	}
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	return (1);
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}