GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/err/err.c Lines: 269 391 68.8 %
Date: 2017-11-13 Branches: 84 180 46.7 %

Line Branch Exec Source
1
/* $OpenBSD: err.c,v 1.45 2017/02/20 23:21:19 beck Exp $ */
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) 1998-2006 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 <stdarg.h>
113
#include <stdio.h>
114
#include <string.h>
115
116
#include <openssl/opensslconf.h>
117
118
#include <openssl/bio.h>
119
#include <openssl/buffer.h>
120
#include <openssl/crypto.h>
121
#include <openssl/err.h>
122
#include <openssl/lhash.h>
123
124
DECLARE_LHASH_OF(ERR_STRING_DATA);
125
DECLARE_LHASH_OF(ERR_STATE);
126
127
static void err_load_strings(int lib, ERR_STRING_DATA *str);
128
129
static void ERR_STATE_free(ERR_STATE *s);
130
#ifndef OPENSSL_NO_ERR
131
static ERR_STRING_DATA ERR_str_libraries[] = {
132
	{ERR_PACK(ERR_LIB_NONE,0,0),		"unknown library"},
133
	{ERR_PACK(ERR_LIB_SYS,0,0),		"system library"},
134
	{ERR_PACK(ERR_LIB_BN,0,0),		"bignum routines"},
135
	{ERR_PACK(ERR_LIB_RSA,0,0),		"rsa routines"},
136
	{ERR_PACK(ERR_LIB_DH,0,0),		"Diffie-Hellman routines"},
137
	{ERR_PACK(ERR_LIB_EVP,0,0),		"digital envelope routines"},
138
	{ERR_PACK(ERR_LIB_BUF,0,0),		"memory buffer routines"},
139
	{ERR_PACK(ERR_LIB_OBJ,0,0),		"object identifier routines"},
140
	{ERR_PACK(ERR_LIB_PEM,0,0),		"PEM routines"},
141
	{ERR_PACK(ERR_LIB_DSA,0,0),		"dsa routines"},
142
	{ERR_PACK(ERR_LIB_X509,0,0),		"x509 certificate routines"},
143
	{ERR_PACK(ERR_LIB_ASN1,0,0),		"asn1 encoding routines"},
144
	{ERR_PACK(ERR_LIB_CONF,0,0),		"configuration file routines"},
145
	{ERR_PACK(ERR_LIB_CRYPTO,0,0),		"common libcrypto routines"},
146
	{ERR_PACK(ERR_LIB_EC,0,0),		"elliptic curve routines"},
147
	{ERR_PACK(ERR_LIB_SSL,0,0),		"SSL routines"},
148
	{ERR_PACK(ERR_LIB_BIO,0,0),		"BIO routines"},
149
	{ERR_PACK(ERR_LIB_PKCS7,0,0),		"PKCS7 routines"},
150
	{ERR_PACK(ERR_LIB_X509V3,0,0),		"X509 V3 routines"},
151
	{ERR_PACK(ERR_LIB_PKCS12,0,0),		"PKCS12 routines"},
152
	{ERR_PACK(ERR_LIB_RAND,0,0),		"random number generator"},
153
	{ERR_PACK(ERR_LIB_DSO,0,0),		"DSO support routines"},
154
	{ERR_PACK(ERR_LIB_TS,0,0),		"time stamp routines"},
155
	{ERR_PACK(ERR_LIB_ENGINE,0,0),		"engine routines"},
156
	{ERR_PACK(ERR_LIB_OCSP,0,0),		"OCSP routines"},
157
	{ERR_PACK(ERR_LIB_FIPS,0,0),		"FIPS routines"},
158
	{ERR_PACK(ERR_LIB_CMS,0,0),		"CMS routines"},
159
	{ERR_PACK(ERR_LIB_HMAC,0,0),		"HMAC routines"},
160
	{ERR_PACK(ERR_LIB_GOST,0,0),		"GOST routines"},
161
	{0, NULL},
162
};
163
164
static ERR_STRING_DATA ERR_str_functs[] = {
165
	{ERR_PACK(0,SYS_F_FOPEN, 0),     	"fopen"},
166
	{ERR_PACK(0,SYS_F_CONNECT, 0),		"connect"},
167
	{ERR_PACK(0,SYS_F_GETSERVBYNAME, 0),	"getservbyname"},
168
	{ERR_PACK(0,SYS_F_SOCKET, 0),		"socket"},
169
	{ERR_PACK(0,SYS_F_IOCTLSOCKET, 0),	"ioctl"},
170
	{ERR_PACK(0,SYS_F_BIND, 0),		"bind"},
171
	{ERR_PACK(0,SYS_F_LISTEN, 0),		"listen"},
172
	{ERR_PACK(0,SYS_F_ACCEPT, 0),		"accept"},
173
	{ERR_PACK(0,SYS_F_OPENDIR, 0),		"opendir"},
174
	{ERR_PACK(0,SYS_F_FREAD, 0),		"fread"},
175
	{0, NULL},
176
};
177
178
static ERR_STRING_DATA ERR_str_reasons[] = {
179
	{ERR_R_SYS_LIB,				"system lib"},
180
	{ERR_R_BN_LIB,				"BN lib"},
181
	{ERR_R_RSA_LIB,				"RSA lib"},
182
	{ERR_R_DH_LIB,				"DH lib"},
183
	{ERR_R_EVP_LIB,				"EVP lib"},
184
	{ERR_R_BUF_LIB,				"BUF lib"},
185
	{ERR_R_OBJ_LIB,				"OBJ lib"},
186
	{ERR_R_PEM_LIB,				"PEM lib"},
187
	{ERR_R_DSA_LIB,				"DSA lib"},
188
	{ERR_R_X509_LIB,			"X509 lib"},
189
	{ERR_R_ASN1_LIB,			"ASN1 lib"},
190
	{ERR_R_CONF_LIB,			"CONF lib"},
191
	{ERR_R_CRYPTO_LIB,			"CRYPTO lib"},
192
	{ERR_R_EC_LIB,				"EC lib"},
193
	{ERR_R_SSL_LIB,				"SSL lib"},
194
	{ERR_R_BIO_LIB,				"BIO lib"},
195
	{ERR_R_PKCS7_LIB,			"PKCS7 lib"},
196
	{ERR_R_X509V3_LIB,			"X509V3 lib"},
197
	{ERR_R_PKCS12_LIB,			"PKCS12 lib"},
198
	{ERR_R_RAND_LIB,			"RAND lib"},
199
	{ERR_R_DSO_LIB,				"DSO lib"},
200
	{ERR_R_ENGINE_LIB,			"ENGINE lib"},
201
	{ERR_R_OCSP_LIB,			"OCSP lib"},
202
	{ERR_R_TS_LIB,				"TS lib"},
203
204
	{ERR_R_NESTED_ASN1_ERROR,		"nested asn1 error"},
205
	{ERR_R_BAD_ASN1_OBJECT_HEADER,		"bad asn1 object header"},
206
	{ERR_R_BAD_GET_ASN1_OBJECT_CALL,	"bad get asn1 object call"},
207
	{ERR_R_EXPECTING_AN_ASN1_SEQUENCE,	"expecting an asn1 sequence"},
208
	{ERR_R_ASN1_LENGTH_MISMATCH,		"asn1 length mismatch"},
209
	{ERR_R_MISSING_ASN1_EOS,		"missing asn1 eos"},
210
211
	{ERR_R_FATAL,				"fatal"},
212
	{ERR_R_MALLOC_FAILURE,			"malloc failure"},
213
	{ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED,	"called a function you should not call"},
214
	{ERR_R_PASSED_NULL_PARAMETER,		"passed a null parameter"},
215
	{ERR_R_INTERNAL_ERROR,			"internal error"},
216
	{ERR_R_DISABLED	,			"called a function that was disabled at compile-time"},
217
218
	{0, NULL},
219
};
220
#endif
221
222
223
/* Define the predeclared (but externally opaque) "ERR_FNS" type */
224
struct st_ERR_FNS {
225
	/* Works on the "error_hash" string table */
226
	LHASH_OF(ERR_STRING_DATA) *(*cb_err_get)(int create);
227
	void (*cb_err_del)(void);
228
	ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *);
229
	ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *);
230
	ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *);
231
	/* Works on the "thread_hash" error-state table */
232
	LHASH_OF(ERR_STATE) *(*cb_thread_get)(int create);
233
	void (*cb_thread_release)(LHASH_OF(ERR_STATE) **hash);
234
	ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *);
235
	ERR_STATE *(*cb_thread_set_item)(ERR_STATE *);
236
	void (*cb_thread_del_item)(const ERR_STATE *);
237
	/* Returns the next available error "library" numbers */
238
	int (*cb_get_next_lib)(void);
239
};
240
241
/* Predeclarations of the "err_defaults" functions */
242
static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create);
243
static void int_err_del(void);
244
static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
245
static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *);
246
static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *);
247
static LHASH_OF(ERR_STATE) *int_thread_get(int create);
248
static void int_thread_release(LHASH_OF(ERR_STATE) **hash);
249
static ERR_STATE *int_thread_get_item(const ERR_STATE *);
250
static ERR_STATE *int_thread_set_item(ERR_STATE *);
251
static void int_thread_del_item(const ERR_STATE *);
252
static int int_err_get_next_lib(void);
253
254
/* The static ERR_FNS table using these defaults functions */
255
static const ERR_FNS err_defaults = {
256
	int_err_get,
257
	int_err_del,
258
	int_err_get_item,
259
	int_err_set_item,
260
	int_err_del_item,
261
	int_thread_get,
262
	int_thread_release,
263
	int_thread_get_item,
264
	int_thread_set_item,
265
	int_thread_del_item,
266
	int_err_get_next_lib
267
};
268
269
/* The replacable table of ERR_FNS functions we use at run-time */
270
static const ERR_FNS *err_fns = NULL;
271
272
/* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */
273
#define ERRFN(a) err_fns->cb_##a
274
275
/* The internal state used by "err_defaults" - as such, the setting, reading,
276
 * creating, and deleting of this data should only be permitted via the
277
 * "err_defaults" functions. This way, a linked module can completely defer all
278
 * ERR state operation (together with requisite locking) to the implementations
279
 * and state in the loading application. */
280
static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL;
281
static LHASH_OF(ERR_STATE) *int_thread_hash = NULL;
282
static int int_thread_hash_references = 0;
283
static int int_err_library_number = ERR_LIB_USER;
284
285
/* Internal function that checks whether "err_fns" is set and if not, sets it to
286
 * the defaults. */
287
static void
288
err_fns_check(void)
289
{
290
72400646
	if (err_fns)
291
		return;
292
293
2937
	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
294
2937
	if (!err_fns)
295
2937
		err_fns = &err_defaults;
296
2937
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
297
36203260
}
298
299
/* API functions to get or set the underlying ERR functions. */
300
301
const ERR_FNS *
302
ERR_get_implementation(void)
303
{
304
	err_fns_check();
305
	return err_fns;
306
}
307
308
int
309
ERR_set_implementation(const ERR_FNS *fns)
310
{
311
	int ret = 0;
312
313
	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
314
	/* It's too late if 'err_fns' is non-NULL. BTW: not much point setting
315
	 * an error is there?! */
316
	if (!err_fns) {
317
		err_fns = fns;
318
		ret = 1;
319
	}
320
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
321
	return ret;
322
}
323
324
/* These are the callbacks provided to "lh_new()" when creating the LHASH tables
325
 * internal to the "err_defaults" implementation. */
326
327
static unsigned long get_error_values(int inc, int top, const char **file,
328
    int *line, const char **data, int *flags);
329
330
/* The internal functions used in the "err_defaults" implementation */
331
332
static unsigned long
333
err_string_data_hash(const ERR_STRING_DATA *a)
334
{
335
	unsigned long ret, l;
336
337
71708322
	l = a->error;
338
35854161
	ret = l^ERR_GET_LIB(l)^ERR_GET_FUNC(l);
339
35854161
	return (ret^ret % 19*13);
340
}
341
71708322
static IMPLEMENT_LHASH_HASH_FN(err_string_data, ERR_STRING_DATA)
342
343
static int
344
err_string_data_cmp(const ERR_STRING_DATA *a, const ERR_STRING_DATA *b)
345
{
346
67076962
	return (int)(a->error - b->error);
347
}
348
67076962
static IMPLEMENT_LHASH_COMP_FN(err_string_data, ERR_STRING_DATA)
349
350
static
351
LHASH_OF(ERR_STRING_DATA) *int_err_get(int create)
352
{
353
	LHASH_OF(ERR_STRING_DATA) *ret = NULL;
354
355
71708340
	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
356
35854170
	if (!int_error_hash && create) {
357
2885
		CRYPTO_push_info("int_err_get (err.c)");
358
2885
		int_error_hash = lh_ERR_STRING_DATA_new();
359
2885
		CRYPTO_pop_info();
360
2885
	}
361
35854170
	if (int_error_hash)
362
35854167
		ret = int_error_hash;
363
35854170
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
364
365
35854170
	return ret;
366
}
367
368
static void
369
int_err_del(void)
370
{
371
3166
	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
372
1583
	if (int_error_hash) {
373
1561
		lh_ERR_STRING_DATA_free(int_error_hash);
374
1561
		int_error_hash = NULL;
375
1561
	}
376
1583
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
377
1583
}
378
379
static ERR_STRING_DATA *
380
int_err_get_item(const ERR_STRING_DATA *d)
381
{
382
	ERR_STRING_DATA *p;
383
	LHASH_OF(ERR_STRING_DATA) *hash;
384
385
156652
	err_fns_check();
386
78326
	hash = ERRFN(err_get)(0);
387
78326
	if (!hash)
388
3
		return NULL;
389
390
78323
	CRYPTO_r_lock(CRYPTO_LOCK_ERR);
391
78323
	p = lh_ERR_STRING_DATA_retrieve(hash, d);
392
78323
	CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
393
394
78323
	return p;
395
78326
}
396
397
static ERR_STRING_DATA *
398
int_err_set_item(ERR_STRING_DATA *d)
399
{
400
	ERR_STRING_DATA *p;
401
	LHASH_OF(ERR_STRING_DATA) *hash;
402
403
71551676
	err_fns_check();
404
35775838
	hash = ERRFN(err_get)(1);
405
35775838
	if (!hash)
406
		return NULL;
407
408
35775838
	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
409
35775838
	p = lh_ERR_STRING_DATA_insert(hash, d);
410
35775838
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
411
412
35775838
	return p;
413
35775838
}
414
415
static ERR_STRING_DATA *
416
int_err_del_item(ERR_STRING_DATA *d)
417
{
418
	ERR_STRING_DATA *p;
419
	LHASH_OF(ERR_STRING_DATA) *hash;
420
421
	err_fns_check();
422
	hash = ERRFN(err_get)(0);
423
	if (!hash)
424
		return NULL;
425
426
	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
427
	p = lh_ERR_STRING_DATA_delete(hash, d);
428
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
429
430
	return p;
431
}
432
433
static unsigned long
434
err_state_hash(const ERR_STATE *a)
435
{
436
107692
	return CRYPTO_THREADID_hash(&a->tid) * 13;
437
}
438
107692
static IMPLEMENT_LHASH_HASH_FN(err_state, ERR_STATE)
439
440
static int
441
err_state_cmp(const ERR_STATE *a, const ERR_STATE *b)
442
{
443
104288
	return CRYPTO_THREADID_cmp(&a->tid, &b->tid);
444
}
445
104288
static IMPLEMENT_LHASH_COMP_FN(err_state, ERR_STATE)
446
447
static
448
LHASH_OF(ERR_STATE) *int_thread_get(int create)
449
{
450
	LHASH_OF(ERR_STATE) *ret = NULL;
451
452
111158
	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
453
55579
	if (!int_thread_hash && create) {
454
1702
		CRYPTO_push_info("int_thread_get (err.c)");
455
1702
		int_thread_hash = lh_ERR_STATE_new();
456
1702
		CRYPTO_pop_info();
457
1702
	}
458
55579
	if (int_thread_hash) {
459
53846
		int_thread_hash_references++;
460
53846
		ret = int_thread_hash;
461
53846
	}
462
55579
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
463
55579
	return ret;
464
}
465
466
static void
467
int_thread_release(LHASH_OF(ERR_STATE) **hash)
468
{
469
	int i;
470
471

161538
	if (hash == NULL || *hash == NULL)
472
		return;
473
474
53846
	i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR);
475
53846
	if (i > 0)
476
		return;
477
478
53846
	*hash = NULL;
479
107692
}
480
481
static ERR_STATE *
482
int_thread_get_item(const ERR_STATE *d)
483
{
484
	ERR_STATE *p;
485
104576
	LHASH_OF(ERR_STATE) *hash;
486
487
52288
	err_fns_check();
488
52288
	hash = ERRFN(thread_get)(0);
489
52288
	if (!hash)
490
1702
		return NULL;
491
492
50586
	CRYPTO_r_lock(CRYPTO_LOCK_ERR);
493
50586
	p = lh_ERR_STATE_retrieve(hash, d);
494
50586
	CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
495
496
50586
	ERRFN(thread_release)(&hash);
497
50586
	return p;
498
52288
}
499
500
static ERR_STATE *
501
int_thread_set_item(ERR_STATE *d)
502
{
503
	ERR_STATE *p;
504
3404
	LHASH_OF(ERR_STATE) *hash;
505
506
1702
	err_fns_check();
507
1702
	hash = ERRFN(thread_get)(1);
508
1702
	if (!hash)
509
		return NULL;
510
511
1702
	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
512
1702
	p = lh_ERR_STATE_insert(hash, d);
513
1702
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
514
515
1702
	ERRFN(thread_release)(&hash);
516
1702
	return p;
517
1702
}
518
519
static void
520
int_thread_del_item(const ERR_STATE *d)
521
{
522
	ERR_STATE *p;
523
3178
	LHASH_OF(ERR_STATE) *hash;
524
525
1589
	err_fns_check();
526
1589
	hash = ERRFN(thread_get)(0);
527
1589
	if (!hash)
528
31
		return;
529
530
1558
	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
531
1558
	p = lh_ERR_STATE_delete(hash, d);
532
	/* make sure we don't leak memory */
533

4674
	if (int_thread_hash_references == 1 &&
534
3116
	    int_thread_hash && lh_ERR_STATE_num_items(int_thread_hash) == 0) {
535
1558
		lh_ERR_STATE_free(int_thread_hash);
536
1558
		int_thread_hash = NULL;
537
1558
	}
538
1558
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
539
540
1558
	ERRFN(thread_release)(&hash);
541
1558
	if (p)
542
1558
		ERR_STATE_free(p);
543
3147
}
544
545
static int
546
int_err_get_next_lib(void)
547
{
548
	int ret;
549
550
	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
551
	ret = int_err_library_number++;
552
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
553
554
	return ret;
555
}
556
557
558
#ifndef OPENSSL_NO_ERR
559
#define NUM_SYS_STR_REASONS 127
560
#define LEN_SYS_STR_REASON 32
561
562
static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
563
/* SYS_str_reasons is filled with copies of strerror() results at
564
 * initialization.
565
 * 'errno' values up to 127 should cover all usual errors,
566
 * others will be displayed numerically by ERR_error_string.
567
 * It is crucial that we have something for each reason code
568
 * that occurs in ERR_str_reasons, or bogus reason strings
569
 * will be returned for SYSerror(which always gets an errno
570
 * value and never one of those 'standard' reason codes. */
571
572
static void
573
build_SYS_str_reasons(void)
574
{
575
	/* malloc cannot be used here, use static storage instead */
576
	static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON];
577
	int i;
578
	static int init = 1;
579
580
316980
	CRYPTO_r_lock(CRYPTO_LOCK_ERR);
581
158490
	if (!init) {
582
155605
		CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
583
155605
		return;
584
	}
585
586
2885
	CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
587
2885
	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
588
2885
	if (!init) {
589
		CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
590
		return;
591
	}
592
593
738560
	for (i = 1; i <= NUM_SYS_STR_REASONS; i++) {
594
366395
		ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
595
596
366395
		str->error = (unsigned long)i;
597
366395
		if (str->string == NULL) {
598
			char (*dest)[LEN_SYS_STR_REASON] =
599
366395
			    &(strerror_tab[i - 1]);
600
366395
			const char *src = strerror(i);
601
366395
			if (src != NULL) {
602
366395
				strlcpy(*dest, src, sizeof *dest);
603
366395
				str->string = *dest;
604
366395
			}
605
366395
		}
606
366395
		if (str->string == NULL)
607
			str->string = "unknown";
608
	}
609
610
	/* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL},
611
	 * as required by ERR_load_strings. */
612
613
2885
	init = 0;
614
615
2885
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
616
161375
}
617
#endif
618
619
#define err_clear_data(p,i) \
620
	do { \
621
		if (((p)->err_data[i] != NULL) && \
622
		    (p)->err_data_flags[i] & ERR_TXT_MALLOCED) { \
623
			free((p)->err_data[i]); \
624
			(p)->err_data[i] = NULL; \
625
		} \
626
		(p)->err_data_flags[i] = 0; \
627
	} while(0)
628
629
#define err_clear(p,i) \
630
	do { \
631
		(p)->err_flags[i] = 0; \
632
		(p)->err_buffer[i] = 0; \
633
		err_clear_data(p, i); \
634
		(p)->err_file[i] = NULL; \
635
		(p)->err_line[i] = -1; \
636
	} while(0)
637
638
static void
639
ERR_STATE_free(ERR_STATE *s)
640
{
641
	int i;
642
643
3116
	if (s == NULL)
644
		return;
645
646
52972
	for (i = 0; i < ERR_NUM_ERRORS; i++) {
647

49912
		err_clear_data(s, i);
648
	}
649
1558
	free(s);
650
3116
}
651
652
void
653
ERR_load_ERR_strings(void)
654
{
655
316980
	err_fns_check();
656
#ifndef OPENSSL_NO_ERR
657
158490
	err_load_strings(0, ERR_str_libraries);
658
158490
	err_load_strings(0, ERR_str_reasons);
659
158490
	err_load_strings(ERR_LIB_SYS, ERR_str_functs);
660
158490
	build_SYS_str_reasons();
661
158490
	err_load_strings(ERR_LIB_SYS, SYS_str_reasons);
662
#endif
663
158490
}
664
665
static void
666
err_load_strings(int lib, ERR_STRING_DATA *str)
667
{
668
73920320
	while (str->error) {
669
35775838
		if (lib)
670
21713130
			str->error |= ERR_PACK(lib, 0, 0);
671
35775838
		ERRFN(err_set_item)(str);
672
35775838
		str++;
673
	}
674
789548
}
675
676
void
677
ERR_load_strings(int lib, ERR_STRING_DATA *str)
678
{
679
311176
	ERR_load_ERR_strings();
680
155588
	err_load_strings(lib, str);
681
155588
}
682
683
void
684
ERR_unload_strings(int lib, ERR_STRING_DATA *str)
685
{
686
	while (str->error) {
687
		if (lib)
688
			str->error |= ERR_PACK(lib, 0, 0);
689
		ERRFN(err_del_item)(str);
690
		str++;
691
	}
692
}
693
694
void
695
ERR_free_strings(void)
696
{
697
3166
	err_fns_check();
698
1583
	ERRFN(err_del)();
699
1583
}
700
701
/********************************************************/
702
703
void
704
ERR_put_error(int lib, int func, int reason, const char *file, int line)
705
{
706
	ERR_STATE *es;
707
19596
	int save_errno = errno;
708
709
9798
	es = ERR_get_state();
710
711
9798
	es->top = (es->top + 1) % ERR_NUM_ERRORS;
712
9798
	if (es->top == es->bottom)
713
5826
		es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS;
714
9798
	es->err_flags[es->top] = 0;
715
9798
	es->err_buffer[es->top] = ERR_PACK(lib, func, reason);
716
9798
	es->err_file[es->top] = file;
717
9798
	es->err_line[es->top] = line;
718

19596
	err_clear_data(es, es->top);
719
9798
	errno = save_errno;
720
9798
}
721
722
void
723
ERR_clear_error(void)
724
{
725
	int i;
726
	ERR_STATE *es;
727
728
56460
	es = ERR_get_state();
729
730
959820
	for (i = 0; i < ERR_NUM_ERRORS; i++) {
731

907674
		err_clear(es, i);
732
	}
733
28230
	es->top = es->bottom = 0;
734
28230
}
735
736
737
unsigned long
738
ERR_get_error(void)
739
{
740
	return (get_error_values(1, 0, NULL, NULL, NULL, NULL));
741
}
742
743
unsigned long
744
ERR_get_error_line(const char **file, int *line)
745
{
746
	return (get_error_values(1, 0, file, line, NULL, NULL));
747
}
748
749
unsigned long
750
ERR_get_error_line_data(const char **file, int *line,
751
    const char **data, int *flags)
752
{
753
1848
	return (get_error_values(1, 0, file, line, data, flags));
754
}
755
756
757
unsigned long
758
ERR_peek_error(void)
759
{
760
18020
	return (get_error_values(0, 0, NULL, NULL, NULL, NULL));
761
}
762
763
unsigned long
764
ERR_peek_error_line(const char **file, int *line)
765
{
766
	return (get_error_values(0, 0, file, line, NULL, NULL));
767
}
768
769
unsigned long
770
ERR_peek_error_line_data(const char **file, int *line,
771
    const char **data, int *flags)
772
{
773
	return (get_error_values(0, 0, file, line, data, flags));
774
}
775
776
unsigned long
777
ERR_peek_last_error(void)
778
{
779
794
	return (get_error_values(0, 1, NULL, NULL, NULL, NULL));
780
}
781
782
unsigned long
783
ERR_peek_last_error_line(const char **file, int *line)
784
{
785
	return (get_error_values(0, 1, file, line, NULL, NULL));
786
}
787
788
unsigned long
789
ERR_peek_last_error_line_data(const char **file, int *line,
790
    const char **data, int *flags)
791
{
792
	return (get_error_values(0, 1, file, line, data, flags));
793
}
794
795
static unsigned long
796
get_error_values(int inc, int top, const char **file, int *line,
797
    const char **data, int *flags)
798
{
799
	int i = 0;
800
	ERR_STATE *es;
801
	unsigned long ret;
802
803
20662
	es = ERR_get_state();
804
805
10331
	if (inc && top) {
806
		if (file)
807
			*file = "";
808
		if (line)
809
			*line = 0;
810
		if (data)
811
			*data = "";
812
		if (flags)
813
			*flags = 0;
814
815
		return ERR_R_INTERNAL_ERROR;
816
	}
817
818
10331
	if (es->bottom == es->top)
819
9778
		return 0;
820
553
	if (top)
821
397
		i = es->top;			 /* last error */
822
	else
823
156
		i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */
824
825
553
	ret = es->err_buffer[i];
826
553
	if (inc) {
827
		es->bottom = i;
828
		es->err_buffer[i] = 0;
829
	}
830
831
553
	if ((file != NULL) && (line != NULL)) {
832
		if (es->err_file[i] == NULL) {
833
			*file = "NA";
834
			if (line != NULL)
835
				*line = 0;
836
		} else {
837
			*file = es->err_file[i];
838
			if (line != NULL)
839
				*line = es->err_line[i];
840
		}
841
	}
842
843
553
	if (data == NULL) {
844
553
		if (inc) {
845
			err_clear_data(es, i);
846
		}
847
	} else {
848
		if (es->err_data[i] == NULL) {
849
			*data = "";
850
			if (flags != NULL)
851
				*flags = 0;
852
		} else {
853
			*data = es->err_data[i];
854
			if (flags != NULL)
855
				*flags = es->err_data_flags[i];
856
		}
857
	}
858
553
	return ret;
859
10331
}
860
861
void
862
ERR_error_string_n(unsigned long e, char *buf, size_t len)
863
{
864
8
	char lsbuf[30], fsbuf[30], rsbuf[30];
865
	const char *ls, *fs, *rs;
866
	int l, f, r, ret;
867
868
4
	l = ERR_GET_LIB(e);
869
4
	f = ERR_GET_FUNC(e);
870
4
	r = ERR_GET_REASON(e);
871
872
4
	ls = ERR_lib_error_string(e);
873
4
	fs = ERR_func_error_string(e);
874
4
	rs = ERR_reason_error_string(e);
875
876
4
	if (ls == NULL) {
877
		(void) snprintf(lsbuf, sizeof(lsbuf), "lib(%d)", l);
878
		ls = lsbuf;
879
	}
880
4
	if (fs == NULL) {
881
4
		(void) snprintf(fsbuf, sizeof(fsbuf), "func(%d)", f);
882
		fs = fsbuf;
883
4
	}
884
4
	if (rs == NULL) {
885
		(void) snprintf(rsbuf, sizeof(rsbuf), "reason(%d)", r);
886
		rs = rsbuf;
887
	}
888
889
4
	ret = snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, fs, rs);
890
4
	if (ret == -1)
891
		return;	/* can't happen, and can't do better if it does */
892
8
	if (ret >= len) {
893
		/* output may be truncated; make sure we always have 5
894
		 * colon-separated fields, i.e. 4 colons ... */
895
#define NUM_COLONS 4
896
4
		if (len > NUM_COLONS) /* ... if possible */
897
		{
898
			int i;
899
			char *s = buf;
900
901
			for (i = 0; i < NUM_COLONS; i++) {
902
				char *colon = strchr(s, ':');
903
				if (colon == NULL ||
904
				    colon > &buf[len - 1] - NUM_COLONS + i) {
905
					/* set colon no. i at last possible position
906
					 * (buf[len-1] is the terminating 0)*/
907
					colon = &buf[len - 1] - NUM_COLONS + i;
908
					*colon = ':';
909
				}
910
				s = colon + 1;
911
			}
912
		}
913
	}
914
8
}
915
916
/* BAD for multi-threading: uses a local buffer if ret == NULL */
917
/* ERR_error_string_n should be used instead for ret != NULL
918
 * as ERR_error_string cannot know how large the buffer is */
919
char *
920
ERR_error_string(unsigned long e, char *ret)
921
{
922
	static char buf[256];
923
924
	if (ret == NULL)
925
		ret = buf;
926
	ERR_error_string_n(e, ret, 256);
927
928
	return ret;
929
}
930
931
LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void)
932
{
933
12
	err_fns_check();
934
6
	return ERRFN(err_get)(0);
935
}
936
937
LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void)
938
{
939
	err_fns_check();
940
	return ERRFN(thread_get)(0);
941
}
942
943
void
944
ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash)
945
{
946
	err_fns_check();
947
	ERRFN(thread_release)(hash);
948
}
949
950
const char *
951
ERR_lib_error_string(unsigned long e)
952
{
953
8
	ERR_STRING_DATA d, *p;
954
	unsigned long l;
955
956
4
	err_fns_check();
957
4
	l = ERR_GET_LIB(e);
958
4
	d.error = ERR_PACK(l, 0, 0);
959
4
	p = ERRFN(err_get_item)(&d);
960
16
	return ((p == NULL) ? NULL : p->string);
961
4
}
962
963
const char *
964
ERR_func_error_string(unsigned long e)
965
{
966
156636
	ERR_STRING_DATA d, *p;
967
	unsigned long l, f;
968
969
78318
	err_fns_check();
970
78318
	l = ERR_GET_LIB(e);
971
78318
	f = ERR_GET_FUNC(e);
972
78318
	d.error = ERR_PACK(l, f, 0);
973
78318
	p = ERRFN(err_get_item)(&d);
974
235474
	return ((p == NULL) ? NULL : p->string);
975
78318
}
976
977
const char *
978
ERR_reason_error_string(unsigned long e)
979
{
980
8
	ERR_STRING_DATA d, *p = NULL;
981
	unsigned long l, r;
982
983
4
	err_fns_check();
984
4
	l = ERR_GET_LIB(e);
985
4
	r = ERR_GET_REASON(e);
986
4
	d.error = ERR_PACK(l, 0, r);
987
4
	p = ERRFN(err_get_item)(&d);
988
4
	if (!p) {
989
		d.error = ERR_PACK(0, 0, r);
990
		p = ERRFN(err_get_item)(&d);
991
	}
992
16
	return ((p == NULL) ? NULL : p->string);
993
4
}
994
995
void
996
ERR_remove_thread_state(const CRYPTO_THREADID *id)
997
{
998
3178
	ERR_STATE tmp;
999
1000
1589
	if (id)
1001
		CRYPTO_THREADID_cpy(&tmp.tid, id);
1002
	else
1003
1589
		CRYPTO_THREADID_current(&tmp.tid);
1004
1589
	err_fns_check();
1005
	/* thread_del_item automatically destroys the LHASH if the number of
1006
	 * items reaches zero. */
1007
1589
	ERRFN(thread_del_item)(&tmp);
1008
1589
}
1009
1010
#ifndef OPENSSL_NO_DEPRECATED
1011
void
1012
ERR_remove_state(unsigned long pid)
1013
{
1014
	ERR_remove_thread_state(NULL);
1015
}
1016
#endif
1017
1018
ERR_STATE *
1019
ERR_get_state(void)
1020
{
1021
	static ERR_STATE fallback;
1022
101172
	ERR_STATE *ret, tmp, *tmpp = NULL;
1023
	int i;
1024
50586
	CRYPTO_THREADID tid;
1025
1026
50586
	err_fns_check();
1027
50586
	CRYPTO_THREADID_current(&tid);
1028
50586
	CRYPTO_THREADID_cpy(&tmp.tid, &tid);
1029
50586
	ret = ERRFN(thread_get_item)(&tmp);
1030
1031
	/* ret == the error state, if NULL, make a new one */
1032
50586
	if (ret == NULL) {
1033
1702
		ret = malloc(sizeof(ERR_STATE));
1034
1702
		if (ret == NULL)
1035
			return (&fallback);
1036
1702
		CRYPTO_THREADID_cpy(&ret->tid, &tid);
1037
1702
		ret->top = 0;
1038
1702
		ret->bottom = 0;
1039
57868
		for (i = 0; i < ERR_NUM_ERRORS; i++) {
1040
27232
			ret->err_data[i] = NULL;
1041
27232
			ret->err_data_flags[i] = 0;
1042
		}
1043
1702
		tmpp = ERRFN(thread_set_item)(ret);
1044
		/* To check if insertion failed, do a get. */
1045
1702
		if (ERRFN(thread_get_item)(ret) != ret) {
1046
			ERR_STATE_free(ret); /* could not insert it */
1047
			return (&fallback);
1048
		}
1049
		/* If a race occured in this function and we came second, tmpp
1050
		 * is the first one that we just replaced. */
1051
1702
		if (tmpp)
1052
			ERR_STATE_free(tmpp);
1053
	}
1054
50586
	return ret;
1055
50586
}
1056
1057
int
1058
ERR_get_next_error_library(void)
1059
{
1060
	err_fns_check();
1061
	return ERRFN(get_next_lib)();
1062
}
1063
1064
void
1065
ERR_set_error_data(char *data, int flags)
1066
{
1067
	ERR_STATE *es;
1068
	int i;
1069
1070
4454
	es = ERR_get_state();
1071
1072
2227
	i = es->top;
1073
2227
	if (i == 0)
1074
		i = ERR_NUM_ERRORS - 1;
1075
1076

4478
	err_clear_data(es, i);
1077
2227
	es->err_data[i] = data;
1078
2227
	es->err_data_flags[i] = flags;
1079
2227
}
1080
1081
void
1082
ERR_asprintf_error_data(char * format, ...) {
1083
4454
	char *errbuf = NULL;
1084
2227
	va_list ap;
1085
	int r;
1086
1087
2227
	va_start(ap, format);
1088
2227
	r = vasprintf(&errbuf, format, ap);
1089
2227
	va_end(ap);
1090
2227
	if (r == -1)
1091
		ERR_set_error_data("malloc failed", ERR_TXT_STRING);
1092
	else
1093
2227
		ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING);
1094
2227
}
1095
1096
void
1097
ERR_add_error_vdata(int num, va_list args)
1098
{
1099
	char format[129];
1100
	char *errbuf;
1101
	int i;
1102
1103
	format[0] = '\0';
1104
	for (i = 0; i < num; i++) {
1105
		if (strlcat(format, "%s", sizeof(format)) >= sizeof(format)) {
1106
			ERR_set_error_data("too many errors", ERR_TXT_STRING);
1107
			return;
1108
		}
1109
	}
1110
	if (vasprintf(&errbuf, format, args) == -1)
1111
		ERR_set_error_data("malloc failed", ERR_TXT_STRING);
1112
	else
1113
		ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING);
1114
}
1115
1116
void
1117
ERR_add_error_data(int num, ...)
1118
{
1119
	va_list args;
1120
	va_start(args, num);
1121
	ERR_add_error_vdata(num, args);
1122
	va_end(args);
1123
}
1124
1125
int
1126
ERR_set_mark(void)
1127
{
1128
	ERR_STATE *es;
1129
1130
	es = ERR_get_state();
1131
1132
	if (es->bottom == es->top)
1133
		return 0;
1134
	es->err_flags[es->top] |= ERR_FLAG_MARK;
1135
	return 1;
1136
}
1137
1138
int
1139
ERR_pop_to_mark(void)
1140
{
1141
	ERR_STATE *es;
1142
1143
	es = ERR_get_state();
1144
1145
	while (es->bottom != es->top &&
1146
	    (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) {
1147
		err_clear(es, es->top);
1148
		es->top -= 1;
1149
		if (es->top == -1)
1150
			es->top = ERR_NUM_ERRORS - 1;
1151
	}
1152
1153
	if (es->bottom == es->top)
1154
		return 0;
1155
	es->err_flags[es->top]&=~ERR_FLAG_MARK;
1156
	return 1;
1157
}