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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 | ||
66 | void 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 | |
88 | static 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 | } | |
97 | void ERR_print_errors_fp(FILE *fp) | |
98 | { | |
99 | ERR_print_errors_cb(print_fp, fp); | |
100 | } | |
101 | #endif | |
102 | ||
103 | void 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 */ | |
155 | char *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 | } |