err_prn.c revision 267654 
1/* crypto/err/err_prn.c */
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 "cryptlib.h"
61#include <openssl/lhash.h>
62#include <openssl/crypto.h>
63#include <openssl/buffer.h>
64#include <openssl/err.h>
65
66void ERR_print_errors_cb(int (*cb)(const char *str, size_t len, void *u),
67			 void *u)
68	{
69	unsigned long l;
70	char buf[256];
71	char buf2[4096];
72	const char *file,*data;
73	int line,flags;
74	unsigned long es;
75
76	es=CRYPTO_thread_id();
77	while ((l=ERR_get_error_line_data(&file,&line,&data,&flags)) != 0)
78		{
79		ERR_error_string_n(l, buf, sizeof buf);
80		BIO_snprintf(buf2, sizeof(buf2), "%lu:%s:%s:%d:%s\n", es, buf,
81			file, line, (flags & ERR_TXT_STRING) ? data : "");
82		if (cb(buf2, strlen(buf2), u) <= 0)
83			break; /* abort outputting the error report */
84		}
85	}
86
87#ifndef OPENSSL_NO_FP_API
88static int print_fp(const char *str, size_t len, void *fp)
89	{
90	BIO bio;
91
92	BIO_set(&bio,BIO_s_file());
93	BIO_set_fp(&bio,fp,BIO_NOCLOSE);
94
95	return BIO_printf(&bio, "%s", str);
96	}
97void ERR_print_errors_fp(FILE *fp)
98	{
99	ERR_print_errors_cb(print_fp, fp);
100	}
101#endif
102
103void ERR_error_string_n(unsigned long e, char *buf, size_t len)
104	{
105	char lsbuf[64], fsbuf[64], rsbuf[64];
106	const char *ls,*fs,*rs;
107	unsigned long l,f,r;
108
109	l=ERR_GET_LIB(e);
110	f=ERR_GET_FUNC(e);
111	r=ERR_GET_REASON(e);
112
113	ls=ERR_lib_error_string(e);
114	fs=ERR_func_error_string(e);
115	rs=ERR_reason_error_string(e);
116
117	if (ls == NULL)
118		BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l);
119	if (fs == NULL)
120		BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f);
121	if (rs == NULL)
122		BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r);
123
124	BIO_snprintf(buf, len,"error:%08lX:%s:%s:%s", e, ls?ls:lsbuf,
125		fs?fs:fsbuf, rs?rs:rsbuf);
126	if (strlen(buf) == len-1)
127		{
128		/* output may be truncated; make sure we always have 5
129		 * colon-separated fields, i.e. 4 colons ... */
130#define NUM_COLONS 4
131		if (len > NUM_COLONS) /* ... if possible */
132			{
133			int i;
134			char *s = buf;
135
136			for (i = 0; i < NUM_COLONS; i++)
137				{
138				char *colon = strchr(s, ':');
139				if (colon == NULL || colon > &buf[len-1] - NUM_COLONS + i)
140					{
141					/* set colon no. i at last possible position
142					 * (buf[len-1] is the terminating 0)*/
143					colon = &buf[len-1] - NUM_COLONS + i;
144					*colon = ':';
145					}
146				s = colon + 1;
147				}
148			}
149		}
150	}
151
152/* BAD for multi-threading: uses a local buffer if ret == NULL */
153/* ERR_error_string_n should be used instead for ret != NULL
154 * as ERR_error_string cannot know how large the buffer is */
155char *ERR_error_string(unsigned long e, char *ret)
156	{
157	static char buf[256];
158
159	if (ret == NULL) ret=buf;
160	ERR_error_string_n(e, ret, 256);
161
162	return ret;
163	}
164