lib/libcrypto/err/err_prn.c

   1 /* $OpenBSD: err_prn.c,v 1.18 2017/02/07 15:52:33 jsing Exp $ */
   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 #include <stdio.h>
  60 #include <string.h>
  61
  62 #include <openssl/buffer.h>
  63 #include <openssl/crypto.h>
  64 #include <openssl/err.h>
  65 #include <openssl/lhash.h>
  66
  67 void
  68 ERR_print_errors_cb(int (*cb)(const char *str, size_t len, void *u), void *u)
  69 {
  70         unsigned long l;
  71         char buf[256];
  72         char buf2[4096];
  73         const char *file, *data;
  74         int line, flags;
  75         unsigned long es;
  76         CRYPTO_THREADID cur;
  77
  78         CRYPTO_THREADID_current(&cur);
  79         es = CRYPTO_THREADID_hash(&cur);
  80         while ((l = ERR_get_error_line_data(&file, &line, &data,
  81             &flags)) != 0) {
  82                 ERR_error_string_n(l, buf, sizeof buf);
  83                 (void) snprintf(buf2, sizeof(buf2), "%lu:%s:%s:%d:%s\n", es,
  84                     buf, file, line, (flags & ERR_TXT_STRING) ? data : "");
  85                 if (cb(buf2, strlen(buf2), u) <= 0)
  86                         break; /* abort outputting the error report */
  87         }
  88 }
  89
  90 static int
  91 print_fp(const char *str, size_t len, void *fp)
  92 {
  93         BIO bio;
  94
  95         BIO_set(&bio, BIO_s_file());
  96         BIO_set_fp(&bio, fp, BIO_NOCLOSE);
  97
  98         return BIO_printf(&bio, "%s", str);
  99 }
 100
 101 void
 102 ERR_print_errors_fp(FILE *fp)
 103 {
 104         ERR_print_errors_cb(print_fp, fp);
 105 }
 106
 107 static int
 108 print_bio(const char *str, size_t len, void *bp)
 109 {
 110         return BIO_write((BIO *)bp, str, len);
 111 }
 112
 113 void
 114 ERR_print_errors(BIO *bp)
 115 {
 116         ERR_print_errors_cb(print_bio, bp);
 117 }