2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
58 /* ====================================================================
59 * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
115 #include "cryptlib.h"
116 #include <openssl/lhash.h>
117 #include <openssl/crypto.h>
118 #include <openssl/buffer.h>
119 #include <openssl/bio.h>
120 #include <openssl/err.h>
122 static unsigned long get_error_values(int inc, int top,
123 const char **file, int *line,
124 const char **data, int *flags);
126 #define err_clear_data(p,i) \
128 if (((p)->err_data[i] != NULL) && \
129 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
131 OPENSSL_free((p)->err_data[i]); \
132 (p)->err_data[i]=NULL; \
134 (p)->err_data_flags[i]=0; \
137 #define err_clear(p,i) \
139 (p)->err_flags[i]=0; \
140 (p)->err_buffer[i]=0; \
141 err_clear_data(p,i); \
142 (p)->err_file[i]=NULL; \
143 (p)->err_line[i]= -1; \
146 void ERR_put_error(int lib, int func, int reason, const char *file, int line)
152 * In the BS2000-OSD POSIX subsystem, the compiler generates path names
153 * in the form "*POSIX(/etc/passwd)". This dirty hack strips them to
154 * something sensible. @@@ We shouldn't modify a const string, though.
156 if (strncmp(file, "*POSIX(", sizeof("*POSIX(") - 1) == 0) {
159 /* Skip the "*POSIX(" prefix */
160 file += sizeof("*POSIX(") - 1;
161 end = &file[strlen(file) - 1];
164 /* Optional: use the basename of the path only. */
165 if ((end = strrchr(file, '/')) != NULL)
169 es = ERR_get_state();
171 es->top = (es->top + 1) % ERR_NUM_ERRORS;
172 if (es->top == es->bottom)
173 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS;
174 es->err_flags[es->top] = 0;
175 es->err_buffer[es->top] = ERR_PACK(lib, func, reason);
176 es->err_file[es->top] = file;
177 es->err_line[es->top] = line;
178 err_clear_data(es, es->top);
181 void ERR_clear_error(void)
186 es = ERR_get_state();
188 for (i = 0; i < ERR_NUM_ERRORS; i++) {
191 es->top = es->bottom = 0;
194 unsigned long ERR_get_error(void)
196 return (get_error_values(1, 0, NULL, NULL, NULL, NULL));
199 unsigned long ERR_get_error_line(const char **file, int *line)
201 return (get_error_values(1, 0, file, line, NULL, NULL));
204 unsigned long ERR_get_error_line_data(const char **file, int *line,
205 const char **data, int *flags)
207 return (get_error_values(1, 0, file, line, data, flags));
210 unsigned long ERR_peek_error(void)
212 return (get_error_values(0, 0, NULL, NULL, NULL, NULL));
215 unsigned long ERR_peek_error_line(const char **file, int *line)
217 return (get_error_values(0, 0, file, line, NULL, NULL));
220 unsigned long ERR_peek_error_line_data(const char **file, int *line,
221 const char **data, int *flags)
223 return (get_error_values(0, 0, file, line, data, flags));
226 unsigned long ERR_peek_last_error(void)
228 return (get_error_values(0, 1, NULL, NULL, NULL, NULL));
231 unsigned long ERR_peek_last_error_line(const char **file, int *line)
233 return (get_error_values(0, 1, file, line, NULL, NULL));
236 unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
237 const char **data, int *flags)
239 return (get_error_values(0, 1, file, line, data, flags));
242 static unsigned long get_error_values(int inc, int top, const char **file,
243 int *line, const char **data,
250 es = ERR_get_state();
262 return ERR_R_INTERNAL_ERROR;
265 if (es->bottom == es->top)
268 i = es->top; /* last error */
270 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */
272 ret = es->err_buffer[i];
275 es->err_buffer[i] = 0;
278 if ((file != NULL) && (line != NULL)) {
279 if (es->err_file[i] == NULL) {
284 *file = es->err_file[i];
286 *line = es->err_line[i];
292 err_clear_data(es, i);
295 if (es->err_data[i] == NULL) {
300 *data = es->err_data[i];
302 *flags = es->err_data_flags[i];
308 void ERR_set_error_data(char *data, int flags)
313 es = ERR_get_state();
317 i = ERR_NUM_ERRORS - 1;
319 err_clear_data(es, i);
320 es->err_data[i] = data;
321 es->err_data_flags[i] = flags;
324 void ERR_add_error_data(int num, ...)
331 str = OPENSSL_malloc(s + 1);
338 for (i = 0; i < num; i++) {
339 a = va_arg(args, char *);
340 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */
345 p = OPENSSL_realloc(str, s + 1);
352 BUF_strlcat(str, a, (size_t)s + 1);
355 ERR_set_error_data(str, ERR_TXT_MALLOCED | ERR_TXT_STRING);
361 int ERR_set_mark(void)
365 es = ERR_get_state();
367 if (es->bottom == es->top)
369 es->err_flags[es->top] |= ERR_FLAG_MARK;
373 int ERR_pop_to_mark(void)
377 es = ERR_get_state();
379 while (es->bottom != es->top
380 && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) {
381 err_clear(es, es->top);
384 es->top = ERR_NUM_ERRORS - 1;
387 if (es->bottom == es->top)
389 es->err_flags[es->top] &= ~ERR_FLAG_MARK;
395 static ERR_STATE *fget_state(void)
397 static ERR_STATE fstate;
401 ERR_STATE *(*get_state_func) (void) = fget_state;
402 void (*remove_state_func) (unsigned long pid);
404 ERR_STATE *ERR_get_state(void)
406 return get_state_func();
409 void int_ERR_set_state_func(ERR_STATE *(*get_func) (void),
410 void (*remove_func) (unsigned long pid))
412 get_state_func = get_func;
413 remove_state_func = remove_func;
416 void ERR_remove_state(unsigned long pid)
418 if (remove_state_func)
419 remove_state_func(pid);