source: trunk/sys/libcrypto/err.c @ 1

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1/* crypto/err/err.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 * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 *    notice, this list of conditions and the following disclaimer.
67 *
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
71 *    distribution.
72 *
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/)"
77 *
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.
82 *
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.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 *    acknowledgment:
89 *    "This product includes software developed by the OpenSSL Project
90 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
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 * ====================================================================
105 *
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).
109 *
110 */
111
112#include <stdio.h>
113#include <stdarg.h>
114#include <string.h>
115#include <openssl/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>
121
122static unsigned long get_error_values(int inc,int top,
123                                        const char **file,int *line,
124                                        const char **data,int *flags);
125
126#define err_clear_data(p,i) \
127        do { \
128        if (((p)->err_data[i] != NULL) && \
129                (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
130                {  \
131                OPENSSL_free((p)->err_data[i]); \
132                (p)->err_data[i]=NULL; \
133                } \
134        (p)->err_data_flags[i]=0; \
135        } while(0)
136
137#define err_clear(p,i) \
138        do { \
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; \
144        } while(0)
145
146void ERR_put_error(int lib, int func, int reason, const char *file,
147             int line)
148        {
149        ERR_STATE *es;
150
151#ifdef _OSD_POSIX
152        /* In the BS2000-OSD POSIX subsystem, the compiler generates
153         * path names in the form "*POSIX(/etc/passwd)".
154         * This dirty hack strips them to something sensible.
155         * @@@ We shouldn't modify a const string, though.
156         */
157        if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) {
158                char *end;
159
160                /* Skip the "*POSIX(" prefix */
161                file += sizeof("*POSIX(")-1;
162                end = &file[strlen(file)-1];
163                if (*end == ')')
164                        *end = '\0';
165                /* Optional: use the basename of the path only. */
166                if ((end = strrchr(file, '/')) != NULL)
167                        file = &end[1];
168        }
169#endif
170        es=ERR_get_state();
171
172        es->top=(es->top+1)%ERR_NUM_ERRORS;
173        if (es->top == es->bottom)
174                es->bottom=(es->bottom+1)%ERR_NUM_ERRORS;
175        es->err_flags[es->top]=0;
176        es->err_buffer[es->top]=ERR_PACK(lib,func,reason);
177        es->err_file[es->top]=file;
178        es->err_line[es->top]=line;
179        err_clear_data(es,es->top);
180        }
181
182void ERR_clear_error(void)
183        {
184        int i;
185        ERR_STATE *es;
186
187        es=ERR_get_state();
188
189        for (i=0; i<ERR_NUM_ERRORS; i++)
190                {
191                err_clear(es,i);
192                }
193        es->top=es->bottom=0;
194        }
195
196
197unsigned long ERR_get_error(void)
198        { return(get_error_values(1,0,NULL,NULL,NULL,NULL)); }
199
200unsigned long ERR_get_error_line(const char **file,
201             int *line)
202        { return(get_error_values(1,0,file,line,NULL,NULL)); }
203
204unsigned long ERR_get_error_line_data(const char **file, int *line,
205             const char **data, int *flags)
206        { return(get_error_values(1,0,file,line,data,flags)); }
207
208
209unsigned long ERR_peek_error(void)
210        { return(get_error_values(0,0,NULL,NULL,NULL,NULL)); }
211
212unsigned long ERR_peek_error_line(const char **file, int *line)
213        { return(get_error_values(0,0,file,line,NULL,NULL)); }
214
215unsigned long ERR_peek_error_line_data(const char **file, int *line,
216             const char **data, int *flags)
217        { return(get_error_values(0,0,file,line,data,flags)); }
218
219
220unsigned long ERR_peek_last_error(void)
221        { return(get_error_values(0,1,NULL,NULL,NULL,NULL)); }
222
223unsigned long ERR_peek_last_error_line(const char **file, int *line)
224        { return(get_error_values(0,1,file,line,NULL,NULL)); }
225
226unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
227             const char **data, int *flags)
228        { return(get_error_values(0,1,file,line,data,flags)); }
229
230
231static unsigned long get_error_values(int inc, int top, const char **file, int *line,
232             const char **data, int *flags)
233        {       
234        int i=0;
235        ERR_STATE *es;
236        unsigned long ret;
237
238        es=ERR_get_state();
239
240        if (inc && top)
241                {
242                if (file) *file = "";
243                if (line) *line = 0;
244                if (data) *data = "";
245                if (flags) *flags = 0;
246                       
247                return ERR_R_INTERNAL_ERROR;
248                }
249
250        if (es->bottom == es->top) return 0;
251        if (top)
252                i=es->top;                       /* last error */
253        else
254                i=(es->bottom+1)%ERR_NUM_ERRORS; /* first error */
255
256        ret=es->err_buffer[i];
257        if (inc)
258                {
259                es->bottom=i;
260                es->err_buffer[i]=0;
261                }
262
263        if ((file != NULL) && (line != NULL))
264                {
265                if (es->err_file[i] == NULL)
266                        {
267                        *file="NA";
268                        if (line != NULL) *line=0;
269                        }
270                else
271                        {
272                        *file=es->err_file[i];
273                        if (line != NULL) *line=es->err_line[i];
274                        }
275                }
276
277        if (data == NULL)
278                {
279                if (inc)
280                        {
281                        err_clear_data(es, i);
282                        }
283                }
284        else
285                {
286                if (es->err_data[i] == NULL)
287                        {
288                        *data="";
289                        if (flags != NULL) *flags=0;
290                        }
291                else
292                        {
293                        *data=es->err_data[i];
294                        if (flags != NULL) *flags=es->err_data_flags[i];
295                        }
296                }
297        return ret;
298        }
299
300void ERR_set_error_data(char *data, int flags)
301        {
302        ERR_STATE *es;
303        int i;
304
305        es=ERR_get_state();
306
307        i=es->top;
308        if (i == 0)
309                i=ERR_NUM_ERRORS-1;
310
311        err_clear_data(es,i);
312        es->err_data[i]=data;
313        es->err_data_flags[i]=flags;
314        }
315
316void ERR_add_error_data(int num, ...)
317        {
318        va_list args;
319        int i,n,s;
320        char *str,*p,*a;
321
322        s=80;
323        str=OPENSSL_malloc(s+1);
324        if (str == NULL) return;
325        str[0]='\0';
326
327        va_start(args, num);
328        n=0;
329        for (i=0; i<num; i++)
330                {
331                a=va_arg(args, char*);
332                /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */
333                if (a != NULL)
334                        {
335                        n+=strlen(a);
336                        if (n > s)
337                                {
338                                s=n+20;
339                                p=OPENSSL_realloc(str,s+1);
340                                if (p == NULL)
341                                        {
342                                        OPENSSL_free(str);
343                                        goto err;
344                                        }
345                                else
346                                        str=p;
347                                }
348                        BUF_strlcat(str,a,(size_t)s+1);
349                        }
350                }
351        ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING);
352
353err:
354        va_end(args);
355        }
356
357int ERR_set_mark(void)
358        {
359        ERR_STATE *es;
360
361        es=ERR_get_state();
362
363        if (es->bottom == es->top) return 0;
364        es->err_flags[es->top]|=ERR_FLAG_MARK;
365        return 1;
366        }
367
368int ERR_pop_to_mark(void)
369        {
370        ERR_STATE *es;
371
372        es=ERR_get_state();
373
374        while(es->bottom != es->top
375                && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0)
376                {
377                err_clear(es,es->top);
378                es->top-=1;
379                if (es->top == -1) es->top=ERR_NUM_ERRORS-1;
380                }
381               
382        if (es->bottom == es->top) return 0;
383        es->err_flags[es->top]&=~ERR_FLAG_MARK;
384        return 1;
385        }
386
387#ifdef OPENSSL_FIPS
388
389static ERR_STATE *fget_state(void)
390        {
391        static ERR_STATE fstate;
392        return &fstate;
393        }
394
395ERR_STATE *(*get_state_func)(void) = fget_state;
396void (*remove_state_func)(unsigned long pid);
397
398ERR_STATE *ERR_get_state(void)
399        {
400        return get_state_func();
401        }
402
403void int_ERR_set_state_func(ERR_STATE *(*get_func)(void),
404                                void (*remove_func)(unsigned long pid))
405        {
406        get_state_func = get_func;
407        remove_state_func = remove_func;
408        }
409
410void ERR_remove_state(unsigned long pid)
411        {
412        if (remove_state_func)
413                remove_state_func(pid);
414        }
415
416#endif
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