/* $OpenBSD: err_prn.c,v 1.19 2022/01/07 09:02:18 tb Exp $ */

/* 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.]

 */

#include <stdio.h>

#include <string.h>

#include <openssl/buffer.h>

#include <openssl/crypto.h>

#include <openssl/err.h>

#include <openssl/lhash.h>

#include "bio_local.h"

void

ERR_print_errors_cb(int (*cb)(const char *str, size_t len, void *u), void *u)

{

  unsigned long l;

  char buf[256];

  char buf2[4096];

  const char *file, *data;

  int line, flags;

  unsigned long es;

  CRYPTO_THREADID cur;

  CRYPTO_THREADID_current(&cur);

  es = CRYPTO_THREADID_hash(&cur);

  while ((l = ERR_get_error_line_data(&file, &line, &data,

      &flags)) != 0) {

    ERR_error_string_n(l, buf, sizeof buf);

    (void) snprintf(buf2, sizeof(buf2), "%lu:%s:%s:%d:%s\n", es,

        buf, file, line, (flags & ERR_TXT_STRING) ? data : "");

    if (cb(buf2, strlen(buf2), u) <= 0)

      break; /* abort outputting the error report */

  }

}

static int

print_fp(const char *str, size_t len, void *fp)

{

  BIO bio;

  BIO_set(&bio, BIO_s_file());

  BIO_set_fp(&bio, fp, BIO_NOCLOSE);

  return BIO_printf(&bio, "%s", str);

}

void

ERR_print_errors_fp(FILE *fp)

{

  ERR_print_errors_cb(print_fp, fp);

}

static int

print_bio(const char *str, size_t len, void *bp)

{

  return BIO_write((BIO *)bp, str, len);

}

void

ERR_print_errors(BIO *bp)

{

  ERR_print_errors_cb(print_bio, bp);

}