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Import of old SSLeay release: SSLeay 0.9.0b
[thirdparty/openssl.git] / crypto / err / err.c
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 #include <stdio.h>
60 #include "lhash.h"
61 #include "crypto.h"
62 #include "cryptlib.h"
63 #include "buffer.h"
64 #include "err.h"
65 #include "crypto.h"
66
67
68 static LHASH *error_hash=NULL;
69 static LHASH *thread_hash=NULL;
70
71 #ifndef NOPROTO
72 static unsigned long err_hash(ERR_STRING_DATA *a);
73 static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b);
74 static unsigned long pid_hash(ERR_STATE *pid);
75 static int pid_cmp(ERR_STATE *a,ERR_STATE *pid);
76 static unsigned long get_error_values(int inc,char **file,int *line,
77 char **data,int *flags);
78 static void ERR_STATE_free(ERR_STATE *s);
79 #else
80 static unsigned long err_hash();
81 static int err_cmp();
82 static unsigned long pid_hash();
83 static int pid_cmp();
84 static void ERR_STATE_free();
85 ERR_STATE *s;
86 #endif
87
88 #ifndef NO_ERR
89 static ERR_STRING_DATA ERR_str_libraries[]=
90 {
91 {ERR_PACK(ERR_LIB_NONE,0,0) ,"unknown library"},
92 {ERR_PACK(ERR_LIB_SYS,0,0) ,"system library"},
93 {ERR_PACK(ERR_LIB_BN,0,0) ,"bignum routines"},
94 {ERR_PACK(ERR_LIB_RSA,0,0) ,"rsa routines"},
95 {ERR_PACK(ERR_LIB_DH,0,0) ,"Diffie-Hellman routines"},
96 {ERR_PACK(ERR_LIB_EVP,0,0) ,"digital envelope routines"},
97 {ERR_PACK(ERR_LIB_BUF,0,0) ,"memory buffer routines"},
98 {ERR_PACK(ERR_LIB_BIO,0,0) ,"BIO routines"},
99 {ERR_PACK(ERR_LIB_OBJ,0,0) ,"object identifier routines"},
100 {ERR_PACK(ERR_LIB_PEM,0,0) ,"PEM routines"},
101 {ERR_PACK(ERR_LIB_ASN1,0,0) ,"asn1 encoding routines"},
102 {ERR_PACK(ERR_LIB_X509,0,0) ,"x509 certificate routines"},
103 {ERR_PACK(ERR_LIB_CONF,0,0) ,"configuation file routines"},
104 {ERR_PACK(ERR_LIB_METH,0,0) ,"X509 lookup 'method' routines"},
105 {ERR_PACK(ERR_LIB_SSL,0,0) ,"SSL routines"},
106 {ERR_PACK(ERR_LIB_RSAREF,0,0) ,"RSAref routines"},
107 {ERR_PACK(ERR_LIB_PROXY,0,0) ,"Proxy routines"},
108 {ERR_PACK(ERR_LIB_BIO,0,0) ,"BIO routines"},
109 {ERR_PACK(ERR_LIB_PKCS7,0,0) ,"PKCS7 routines"},
110 {0,NULL},
111 };
112
113 static ERR_STRING_DATA ERR_str_functs[]=
114 {
115 {ERR_PACK(0,SYS_F_FOPEN,0), "fopen"},
116 {ERR_PACK(0,SYS_F_CONNECT,0), "connect"},
117 {ERR_PACK(0,SYS_F_GETSERVBYNAME,0), "getservbyname"},
118 {ERR_PACK(0,SYS_F_SOCKET,0), "socket"},
119 {ERR_PACK(0,SYS_F_IOCTLSOCKET,0), "ioctlsocket"},
120 {ERR_PACK(0,SYS_F_BIND,0), "bind"},
121 {ERR_PACK(0,SYS_F_LISTEN,0), "listen"},
122 {ERR_PACK(0,SYS_F_ACCEPT,0), "accept"},
123 #ifdef WINDOWS
124 {ERR_PACK(0,SYS_F_WSASTARTUP,0), "WSAstartup"},
125 #endif
126 {0,NULL},
127 };
128
129 static ERR_STRING_DATA ERR_str_reasons[]=
130 {
131 {ERR_R_FATAL ,"fatal"},
132 {ERR_R_SYS_LIB ,"system lib"},
133 {ERR_R_BN_LIB ,"BN lib"},
134 {ERR_R_RSA_LIB ,"RSA lib"},
135 {ERR_R_DH_LIB ,"DH lib"},
136 {ERR_R_EVP_LIB ,"EVP lib"},
137 {ERR_R_BUF_LIB ,"BUF lib"},
138 {ERR_R_BIO_LIB ,"BIO lib"},
139 {ERR_R_OBJ_LIB ,"OBJ lib"},
140 {ERR_R_PEM_LIB ,"PEM lib"},
141 {ERR_R_X509_LIB ,"X509 lib"},
142 {ERR_R_METH_LIB ,"METH lib"},
143 {ERR_R_ASN1_LIB ,"ASN1 lib"},
144 {ERR_R_CONF_LIB ,"CONF lib"},
145 {ERR_R_SSL_LIB ,"SSL lib"},
146 {ERR_R_PROXY_LIB ,"PROXY lib"},
147 {ERR_R_BIO_LIB ,"BIO lib"},
148 {ERR_R_PKCS7_LIB ,"PKCS7 lib"},
149 {ERR_R_MALLOC_FAILURE ,"Malloc failure"},
150 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED ,"called a fuction you should not call"},
151 {0,NULL},
152 };
153 #endif
154
155 #define err_clear_data(p,i) \
156 if (((p)->err_data[i] != NULL) && \
157 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
158 { \
159 Free((p)->err_data[i]); \
160 (p)->err_data[i]=NULL; \
161 } \
162 (p)->err_data_flags[i]=0;
163
164 static void ERR_STATE_free(s)
165 ERR_STATE *s;
166 {
167 int i;
168
169 for (i=0; i<ERR_NUM_ERRORS; i++)
170 {
171 err_clear_data(s,i);
172 }
173 Free(s);
174 }
175
176 void ERR_load_ERR_strings()
177 {
178 static int init=1;
179
180 if (init)
181 {
182 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
183 if (init == 0)
184 {
185 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
186 return;
187 }
188 init=0;
189 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
190
191 #ifndef NO_ERR
192 ERR_load_strings(0,ERR_str_libraries);
193 ERR_load_strings(0,ERR_str_reasons);
194 ERR_load_strings(ERR_LIB_SYS,ERR_str_functs);
195 #endif
196 }
197 }
198
199 void ERR_load_strings(lib,str)
200 int lib;
201 ERR_STRING_DATA *str;
202 {
203 if (error_hash == NULL)
204 {
205 CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH);
206 error_hash=lh_new(err_hash,err_cmp);
207 if (error_hash == NULL)
208 {
209 CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);
210 return;
211 }
212 CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);
213
214 ERR_load_ERR_strings();
215 }
216
217 CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH);
218 while (str->error)
219 {
220 str->error|=ERR_PACK(lib,0,0);
221 lh_insert(error_hash,(char *)str);
222 str++;
223 }
224 CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);
225 }
226
227 void ERR_free_strings()
228 {
229 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
230
231 if (error_hash != NULL)
232 {
233 lh_free(error_hash);
234 error_hash=NULL;
235 }
236
237 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
238 }
239
240 /********************************************************/
241
242 void ERR_put_error(lib,func,reason,file,line)
243 int lib,func,reason;
244 char *file;
245 int line;
246 {
247 ERR_STATE *es;
248
249 es=ERR_get_state();
250
251 es->top=(es->top+1)%ERR_NUM_ERRORS;
252 if (es->top == es->bottom)
253 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS;
254 es->err_buffer[es->top]=ERR_PACK(lib,func,reason);
255 es->err_file[es->top]=file;
256 es->err_line[es->top]=line;
257 err_clear_data(es,es->top);
258 }
259
260 void ERR_clear_error()
261 {
262 ERR_STATE *es;
263
264 es=ERR_get_state();
265
266 #if 0
267 /* hmm... is this needed */
268 for (i=0; i<ERR_NUM_ERRORS; i++)
269 {
270 es->err_buffer[i]=0;
271 es->err_file[i]=NULL;
272 es->err_line[i]= -1;
273 err_clear_data(es,i);
274 }
275 #endif
276 es->top=es->bottom=0;
277 }
278
279
280 unsigned long ERR_get_error()
281 { return(get_error_values(1,NULL,NULL,NULL,NULL)); }
282
283 unsigned long ERR_get_error_line(file,line)
284 char **file;
285 int *line;
286 { return(get_error_values(1,file,line,NULL,NULL)); }
287
288 unsigned long ERR_get_error_line_data(file,line,data,flags)
289 char **file;
290 int *line;
291 char **data;
292 int *flags;
293 { return(get_error_values(1,file,line,data,flags)); }
294
295 unsigned long ERR_peek_error()
296 { return(get_error_values(0,NULL,NULL,NULL,NULL)); }
297
298 unsigned long ERR_peek_error_line(file,line)
299 char **file;
300 int *line;
301 { return(get_error_values(0,file,line,NULL,NULL)); }
302
303 unsigned long ERR_peek_error_line_data(file,line,data,flags)
304 char **file;
305 int *line;
306 char **data;
307 int *flags;
308 { return(get_error_values(0,file,line,data,flags)); }
309
310 static unsigned long get_error_values(inc,file,line,data,flags)
311 int inc;
312 char **file;
313 int *line;
314 char **data;
315 int *flags;
316 {
317 int i=0;
318 ERR_STATE *es;
319 unsigned long ret;
320
321 es=ERR_get_state();
322
323 if (es->bottom == es->top) return(0);
324 i=(es->bottom+1)%ERR_NUM_ERRORS;
325
326 ret=es->err_buffer[i];
327 if (inc)
328 {
329 es->bottom=i;
330 es->err_buffer[i]=0;
331 }
332
333 if ((file != NULL) && (line != NULL))
334 {
335 if (es->err_file[i] == NULL)
336 {
337 *file="NA";
338 if (line != NULL) *line=0;
339 }
340 else
341 {
342 *file=es->err_file[i];
343 if (line != NULL) *line=es->err_line[i];
344 }
345 }
346
347 if (data != NULL)
348 {
349 if (es->err_data[i] == NULL)
350 {
351 *data="";
352 if (flags != NULL) *flags=0;
353 }
354 else
355 {
356 *data=es->err_data[i];
357 if (flags != NULL) *flags=es->err_data_flags[i];
358 }
359 }
360 return(ret);
361 }
362
363 /* BAD for multi-threaded, uses a local buffer if ret == NULL */
364 char *ERR_error_string(e,ret)
365 unsigned long e;
366 char *ret;
367 {
368 static char buf[256];
369 char *ls,*fs,*rs;
370 unsigned long l,f,r;
371 int i;
372
373 l=ERR_GET_LIB(e);
374 f=ERR_GET_FUNC(e);
375 r=ERR_GET_REASON(e);
376
377 ls=ERR_lib_error_string(e);
378 fs=ERR_func_error_string(e);
379 rs=ERR_reason_error_string(e);
380
381 if (ret == NULL) ret=buf;
382
383 sprintf(&(ret[0]),"error:%08lX:",e);
384 i=strlen(ret);
385 if (ls == NULL)
386 sprintf(&(ret[i]),":lib(%lu) ",l);
387 else sprintf(&(ret[i]),"%s",ls);
388 i=strlen(ret);
389 if (fs == NULL)
390 sprintf(&(ret[i]),":func(%lu) ",f);
391 else sprintf(&(ret[i]),":%s",fs);
392 i=strlen(ret);
393 if (rs == NULL)
394 sprintf(&(ret[i]),":reason(%lu)",r);
395 else sprintf(&(ret[i]),":%s",rs);
396
397 return(ret);
398 }
399
400 LHASH *ERR_get_string_table()
401 {
402 return(error_hash);
403 }
404
405 LHASH *ERR_get_err_state_table()
406 {
407 return(thread_hash);
408 }
409
410 char *ERR_lib_error_string(e)
411 unsigned long e;
412 {
413 ERR_STRING_DATA d,*p=NULL;
414 unsigned long l;
415
416 l=ERR_GET_LIB(e);
417
418 CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH);
419
420 if (error_hash != NULL)
421 {
422 d.error=ERR_PACK(l,0,0);
423 p=(ERR_STRING_DATA *)lh_retrieve(error_hash,(char *)&d);
424 }
425
426 CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH);
427
428 return((p == NULL)?NULL:p->string);
429 }
430
431 char *ERR_func_error_string(e)
432 unsigned long e;
433 {
434 ERR_STRING_DATA d,*p=NULL;
435 unsigned long l,f;
436
437 l=ERR_GET_LIB(e);
438 f=ERR_GET_FUNC(e);
439
440 CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH);
441
442 if (error_hash != NULL)
443 {
444 d.error=ERR_PACK(l,f,0);
445 p=(ERR_STRING_DATA *)lh_retrieve(error_hash,(char *)&d);
446 }
447
448 CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH);
449
450 return((p == NULL)?NULL:p->string);
451 }
452
453 char *ERR_reason_error_string(e)
454 unsigned long e;
455 {
456 ERR_STRING_DATA d,*p=NULL;
457 unsigned long l,r;
458
459 l=ERR_GET_LIB(e);
460 r=ERR_GET_REASON(e);
461
462 CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH);
463
464 if (error_hash != NULL)
465 {
466 d.error=ERR_PACK(l,0,r);
467 p=(ERR_STRING_DATA *)lh_retrieve(error_hash,(char *)&d);
468 if (p == NULL)
469 {
470 d.error=ERR_PACK(0,0,r);
471 p=(ERR_STRING_DATA *)lh_retrieve(error_hash,
472 (char *)&d);
473 }
474 }
475
476 CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH);
477
478 return((p == NULL)?NULL:p->string);
479 }
480
481 static unsigned long err_hash(a)
482 ERR_STRING_DATA *a;
483 {
484 unsigned long ret,l;
485
486 l=a->error;
487 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l);
488 return(ret^ret%19*13);
489 }
490
491 static int err_cmp(a,b)
492 ERR_STRING_DATA *a,*b;
493 {
494 return((int)(a->error-b->error));
495 }
496
497 static unsigned long pid_hash(a)
498 ERR_STATE *a;
499 {
500 return(a->pid*13);
501 }
502
503 static int pid_cmp(a,b)
504 ERR_STATE *a,*b;
505 {
506 return((int)((long)a->pid - (long)b->pid));
507 }
508
509 void ERR_remove_state(pid)
510 unsigned long pid;
511 {
512 ERR_STATE *p,tmp;
513
514 if (thread_hash == NULL)
515 return;
516 if (pid == 0)
517 pid=(unsigned long)CRYPTO_thread_id();
518 tmp.pid=pid;
519 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
520 p=(ERR_STATE *)lh_delete(thread_hash,(char *)&tmp);
521 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
522
523 if (p != NULL) ERR_STATE_free(p);
524 }
525
526 ERR_STATE *ERR_get_state()
527 {
528 static ERR_STATE fallback;
529 ERR_STATE *ret=NULL,tmp,*tmpp;
530 int i;
531 unsigned long pid;
532
533 pid=(unsigned long)CRYPTO_thread_id();
534
535 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
536 if (thread_hash == NULL)
537 {
538 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
539 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
540 if (thread_hash == NULL)
541 {
542 thread_hash=lh_new(pid_hash,pid_cmp);
543 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
544 if (thread_hash == NULL) return(&fallback);
545 }
546 else
547 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
548 }
549 else
550 {
551 tmp.pid=pid;
552 ret=(ERR_STATE *)lh_retrieve(thread_hash,(char *)&tmp);
553 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
554 }
555
556 /* ret == the error state, if NULL, make a new one */
557 if (ret == NULL)
558 {
559 ret=(ERR_STATE *)Malloc(sizeof(ERR_STATE));
560 if (ret == NULL) return(&fallback);
561 ret->pid=pid;
562 ret->top=0;
563 ret->bottom=0;
564 for (i=0; i<ERR_NUM_ERRORS; i++)
565 {
566 ret->err_data[i]=NULL;
567 ret->err_data_flags[i]=0;
568 }
569 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
570 tmpp=(ERR_STATE *)lh_insert(thread_hash,(char *)ret);
571 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
572 if (tmpp != NULL) /* old entry - should not happen */
573 {
574 ERR_STATE_free(tmpp);
575 }
576 }
577 return(ret);
578 }
579
580 int ERR_get_next_error_library()
581 {
582 static int value=ERR_LIB_USER;
583
584 return(value++);
585 }
586
587 void ERR_set_error_data(data,flags)
588 char *data;
589 int flags;
590 {
591 ERR_STATE *es;
592 int i;
593
594 es=ERR_get_state();
595
596 i=es->top;
597 if (i == 0)
598 i=ERR_NUM_ERRORS-1;
599
600 es->err_data[i]=data;
601 es->err_data_flags[es->top]=flags;
602 }
603
604 void ERR_add_error_data( VAR_PLIST(int , num))
605 VAR_ALIST
606 {
607 VAR_BDEFN(args, int, num);
608 int i,n,s;
609 char *str,*p,*a;
610
611 s=64;
612 str=Malloc(s+1);
613 if (str == NULL) return;
614 str[0]='\0';
615
616 VAR_INIT(args,int,num);
617 n=0;
618 for (i=0; i<num; i++)
619 {
620 VAR_ARG(args,char *,a);
621 n+=strlen(a);
622 if (n > s)
623 {
624 s=n+20;
625 p=Realloc(str,s+1);
626 if (p == NULL)
627 {
628 Free(str);
629 return;
630 }
631 else
632 str=p;
633 }
634 strcat(str,a);
635 }
636 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING);
637
638 VAR_END( args );
639 }
640
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