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) 1998-2006 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 "internal/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 #include <openssl/opensslconf.h>
124 static void err_load_strings(int lib, ERR_STRING_DATA *str);
126 static void ERR_STATE_free(ERR_STATE *s);
127 #ifndef OPENSSL_NO_ERR
128 static ERR_STRING_DATA ERR_str_libraries[] = {
129 {ERR_PACK(ERR_LIB_NONE, 0, 0), "unknown library"},
130 {ERR_PACK(ERR_LIB_SYS, 0, 0), "system library"},
131 {ERR_PACK(ERR_LIB_BN, 0, 0), "bignum routines"},
132 {ERR_PACK(ERR_LIB_RSA, 0, 0), "rsa routines"},
133 {ERR_PACK(ERR_LIB_DH, 0, 0), "Diffie-Hellman routines"},
134 {ERR_PACK(ERR_LIB_EVP, 0, 0), "digital envelope routines"},
135 {ERR_PACK(ERR_LIB_BUF, 0, 0), "memory buffer routines"},
136 {ERR_PACK(ERR_LIB_OBJ, 0, 0), "object identifier routines"},
137 {ERR_PACK(ERR_LIB_PEM, 0, 0), "PEM routines"},
138 {ERR_PACK(ERR_LIB_DSA, 0, 0), "dsa routines"},
139 {ERR_PACK(ERR_LIB_X509, 0, 0), "x509 certificate routines"},
140 {ERR_PACK(ERR_LIB_ASN1, 0, 0), "asn1 encoding routines"},
141 {ERR_PACK(ERR_LIB_CONF, 0, 0), "configuration file routines"},
142 {ERR_PACK(ERR_LIB_CRYPTO, 0, 0), "common libcrypto routines"},
143 {ERR_PACK(ERR_LIB_EC, 0, 0), "elliptic curve routines"},
144 {ERR_PACK(ERR_LIB_ECDSA, 0, 0), "ECDSA routines"},
145 {ERR_PACK(ERR_LIB_ECDH, 0, 0), "ECDH routines"},
146 {ERR_PACK(ERR_LIB_SSL, 0, 0), "SSL routines"},
147 {ERR_PACK(ERR_LIB_BIO, 0, 0), "BIO routines"},
148 {ERR_PACK(ERR_LIB_PKCS7, 0, 0), "PKCS7 routines"},
149 {ERR_PACK(ERR_LIB_X509V3, 0, 0), "X509 V3 routines"},
150 {ERR_PACK(ERR_LIB_PKCS12, 0, 0), "PKCS12 routines"},
151 {ERR_PACK(ERR_LIB_RAND, 0, 0), "random number generator"},
152 {ERR_PACK(ERR_LIB_DSO, 0, 0), "DSO support routines"},
153 {ERR_PACK(ERR_LIB_TS, 0, 0), "time stamp routines"},
154 {ERR_PACK(ERR_LIB_ENGINE, 0, 0), "engine routines"},
155 {ERR_PACK(ERR_LIB_OCSP, 0, 0), "OCSP routines"},
156 {ERR_PACK(ERR_LIB_FIPS, 0, 0), "FIPS routines"},
157 {ERR_PACK(ERR_LIB_CMS, 0, 0), "CMS routines"},
158 {ERR_PACK(ERR_LIB_HMAC, 0, 0), "HMAC routines"},
159 {ERR_PACK(ERR_LIB_ASYNC, 0, 0), "ASYNC routines"},
163 static ERR_STRING_DATA ERR_str_functs[] = {
164 {ERR_PACK(0, SYS_F_FOPEN, 0), "fopen"},
165 {ERR_PACK(0, SYS_F_CONNECT, 0), "connect"},
166 {ERR_PACK(0, SYS_F_GETSERVBYNAME, 0), "getservbyname"},
167 {ERR_PACK(0, SYS_F_SOCKET, 0), "socket"},
168 {ERR_PACK(0, SYS_F_IOCTLSOCKET, 0), "ioctlsocket"},
169 {ERR_PACK(0, SYS_F_BIND, 0), "bind"},
170 {ERR_PACK(0, SYS_F_LISTEN, 0), "listen"},
171 {ERR_PACK(0, SYS_F_ACCEPT, 0), "accept"},
172 # ifdef OPENSSL_SYS_WINDOWS
173 {ERR_PACK(0, SYS_F_WSASTARTUP, 0), "WSAstartup"},
175 {ERR_PACK(0, SYS_F_OPENDIR, 0), "opendir"},
176 {ERR_PACK(0, SYS_F_FREAD, 0), "fread"},
180 static ERR_STRING_DATA ERR_str_reasons[] = {
181 {ERR_R_SYS_LIB, "system lib"},
182 {ERR_R_BN_LIB, "BN lib"},
183 {ERR_R_RSA_LIB, "RSA lib"},
184 {ERR_R_DH_LIB, "DH lib"},
185 {ERR_R_EVP_LIB, "EVP lib"},
186 {ERR_R_BUF_LIB, "BUF lib"},
187 {ERR_R_OBJ_LIB, "OBJ lib"},
188 {ERR_R_PEM_LIB, "PEM lib"},
189 {ERR_R_DSA_LIB, "DSA lib"},
190 {ERR_R_X509_LIB, "X509 lib"},
191 {ERR_R_ASN1_LIB, "ASN1 lib"},
192 {ERR_R_CONF_LIB, "CONF lib"},
193 {ERR_R_CRYPTO_LIB, "CRYPTO lib"},
194 {ERR_R_EC_LIB, "EC lib"},
195 {ERR_R_SSL_LIB, "SSL lib"},
196 {ERR_R_BIO_LIB, "BIO lib"},
197 {ERR_R_PKCS7_LIB, "PKCS7 lib"},
198 {ERR_R_X509V3_LIB, "X509V3 lib"},
199 {ERR_R_PKCS12_LIB, "PKCS12 lib"},
200 {ERR_R_RAND_LIB, "RAND lib"},
201 {ERR_R_DSO_LIB, "DSO lib"},
202 {ERR_R_ENGINE_LIB, "ENGINE lib"},
203 {ERR_R_OCSP_LIB, "OCSP lib"},
204 {ERR_R_TS_LIB, "TS lib"},
205 {ERR_R_ECDSA_LIB, "ECDSA lib"},
207 {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"},
208 {ERR_R_BAD_ASN1_OBJECT_HEADER, "bad asn1 object header"},
209 {ERR_R_BAD_GET_ASN1_OBJECT_CALL, "bad get asn1 object call"},
210 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE, "expecting an asn1 sequence"},
211 {ERR_R_ASN1_LENGTH_MISMATCH, "asn1 length mismatch"},
212 {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"},
214 {ERR_R_FATAL, "fatal"},
215 {ERR_R_MALLOC_FAILURE, "malloc failure"},
216 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED,
217 "called a function you should not call"},
218 {ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"},
219 {ERR_R_INTERNAL_ERROR, "internal error"},
220 {ERR_R_DISABLED, "called a function that was disabled at compile-time"},
226 /* Predeclarations of the "err_defaults" functions */
227 static LHASH_OF(ERR_STRING_DATA) *get_hash(int create, int lockit);
228 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
229 static LHASH_OF(ERR_STATE) *int_thread_get(int create, int lockit);
230 static void int_thread_release(LHASH_OF(ERR_STATE) **hash);
231 static ERR_STATE *int_thread_get_item(const ERR_STATE *);
232 static ERR_STATE *int_thread_set_item(ERR_STATE *);
233 static void int_thread_del_item(const ERR_STATE *);
238 static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL;
239 static LHASH_OF(ERR_STATE) *int_thread_hash = NULL;
240 static int int_thread_hash_references = 0;
241 static int int_err_library_number = ERR_LIB_USER;
243 static unsigned long get_error_values(int inc, int top, const char **file,
244 int *line, const char **data,
247 static unsigned long err_string_data_hash(const ERR_STRING_DATA *a)
249 unsigned long ret, l;
252 ret = l ^ ERR_GET_LIB(l) ^ ERR_GET_FUNC(l);
253 return (ret ^ ret % 19 * 13);
256 static int err_string_data_cmp(const ERR_STRING_DATA *a,
257 const ERR_STRING_DATA *b)
259 return (int)(a->error - b->error);
262 static LHASH_OF(ERR_STRING_DATA) *get_hash(int create, int lockit)
264 LHASH_OF(ERR_STRING_DATA) *ret = NULL;
267 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
268 if (!int_error_hash && create) {
269 int_error_hash = lh_ERR_STRING_DATA_new(err_string_data_hash,
270 err_string_data_cmp);
272 if (int_error_hash != NULL)
273 ret = int_error_hash;
275 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
280 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d)
282 ERR_STRING_DATA *p = NULL;
283 LHASH_OF(ERR_STRING_DATA) *hash;
285 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
286 hash = get_hash(0, 0);
288 p = lh_ERR_STRING_DATA_retrieve(hash, d);
289 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
294 static unsigned long err_state_hash(const ERR_STATE *a)
296 return CRYPTO_THREADID_hash(&a->tid) * 13;
299 static int err_state_cmp(const ERR_STATE *a, const ERR_STATE *b)
301 return CRYPTO_THREADID_cmp(&a->tid, &b->tid);
304 static LHASH_OF(ERR_STATE) *int_thread_get(int create, int lockit)
306 LHASH_OF(ERR_STATE) *ret = NULL;
309 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
310 if (!int_thread_hash && create) {
311 int_thread_hash = lh_ERR_STATE_new(err_state_hash, err_state_cmp);
313 if (int_thread_hash != NULL) {
314 int_thread_hash_references++;
315 ret = int_thread_hash;
318 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
322 static void int_thread_release(LHASH_OF(ERR_STATE) **hash)
326 if (hash == NULL || *hash == NULL)
329 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR);
332 fprintf(stderr, "%4d:%s\n", int_thread_hash_references, "ERR");
338 fprintf(stderr, "int_thread_release, bad reference count\n");
345 static ERR_STATE *int_thread_get_item(const ERR_STATE *d)
348 LHASH_OF(ERR_STATE) *hash;
350 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
351 hash = int_thread_get(0, 0);
353 p = lh_ERR_STATE_retrieve(hash, d);
354 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
356 int_thread_release(&hash);
360 static ERR_STATE *int_thread_set_item(ERR_STATE *d)
363 LHASH_OF(ERR_STATE) *hash;
365 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
366 hash = int_thread_get(1, 0);
368 p = lh_ERR_STATE_insert(hash, d);
369 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
371 int_thread_release(&hash);
375 static void int_thread_del_item(const ERR_STATE *d)
378 LHASH_OF(ERR_STATE) *hash;
380 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
381 hash = int_thread_get(0, 0);
383 p = lh_ERR_STATE_delete(hash, d);
384 /* If there are no other references, and we just removed the
385 * last item, delete the int_thread_hash */
386 if (int_thread_hash_references == 1
388 && lh_ERR_STATE_num_items(int_thread_hash) == 0) {
389 int_thread_hash_references = 0;
390 lh_ERR_STATE_free(int_thread_hash);
391 int_thread_hash = NULL;
395 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
397 int_thread_release(&hash);
401 #ifndef OPENSSL_NO_ERR
402 # define NUM_SYS_STR_REASONS 127
403 # define LEN_SYS_STR_REASON 32
405 static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
407 * SYS_str_reasons is filled with copies of strerror() results at
408 * initialization. 'errno' values up to 127 should cover all usual errors,
409 * others will be displayed numerically by ERR_error_string. It is crucial
410 * that we have something for each reason code that occurs in
411 * ERR_str_reasons, or bogus reason strings will be returned for SYSerr(),
412 * which always gets an errno value and never one of those 'standard' reason
416 static void build_SYS_str_reasons(void)
418 /* OPENSSL_malloc cannot be used here, use static storage instead */
419 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON];
423 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
425 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
429 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
430 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
432 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
436 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) {
437 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
439 str->error = (unsigned long)i;
440 if (str->string == NULL) {
441 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]);
442 char *src = strerror(i);
444 strncpy(*dest, src, sizeof(*dest));
445 (*dest)[sizeof(*dest) - 1] = '\0';
449 if (str->string == NULL)
450 str->string = "unknown";
454 * Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, as
455 * required by ERR_load_strings.
460 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
464 #define err_clear_data(p,i) \
466 if ((p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
468 OPENSSL_free((p)->err_data[i]); \
469 (p)->err_data[i]=NULL; \
471 (p)->err_data_flags[i]=0; \
474 #define err_clear(p,i) \
476 (p)->err_flags[i]=0; \
477 (p)->err_buffer[i]=0; \
478 err_clear_data(p,i); \
479 (p)->err_file[i]=NULL; \
480 (p)->err_line[i]= -1; \
483 static void ERR_STATE_free(ERR_STATE *s)
490 for (i = 0; i < ERR_NUM_ERRORS; i++) {
491 err_clear_data(s, i);
496 void ERR_load_ERR_strings(void)
498 #ifndef OPENSSL_NO_ERR
499 err_load_strings(0, ERR_str_libraries);
500 err_load_strings(0, ERR_str_reasons);
501 err_load_strings(ERR_LIB_SYS, ERR_str_functs);
502 build_SYS_str_reasons();
503 err_load_strings(ERR_LIB_SYS, SYS_str_reasons);
507 static void err_load_strings(int lib, ERR_STRING_DATA *str)
509 LHASH_OF(ERR_STRING_DATA) *hash;
511 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
512 hash = get_hash(1, 0);
514 for (; str->error; str++) {
516 str->error |= ERR_PACK(lib, 0, 0);
517 (void)lh_ERR_STRING_DATA_insert(hash, str);
520 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
523 void ERR_load_strings(int lib, ERR_STRING_DATA *str)
525 ERR_load_ERR_strings();
526 err_load_strings(lib, str);
529 void ERR_unload_strings(int lib, ERR_STRING_DATA *str)
531 LHASH_OF(ERR_STRING_DATA) *hash;
533 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
534 hash = get_hash(0, 0);
536 for (; str->error; str++) {
538 str->error |= ERR_PACK(lib, 0, 0);
539 (void)lh_ERR_STRING_DATA_delete(hash, str);
542 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
545 void ERR_free_strings(void)
547 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
548 lh_ERR_STRING_DATA_free(int_error_hash);
549 int_error_hash = NULL;
550 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
553 /********************************************************/
555 void ERR_put_error(int lib, int func, int reason, const char *file, int line)
561 * In the BS2000-OSD POSIX subsystem, the compiler generates path names
562 * in the form "*POSIX(/etc/passwd)". This dirty hack strips them to
563 * something sensible. @@@ We shouldn't modify a const string, though.
565 if (strncmp(file, "*POSIX(", sizeof("*POSIX(") - 1) == 0) {
568 /* Skip the "*POSIX(" prefix */
569 file += sizeof("*POSIX(") - 1;
570 end = &file[strlen(file) - 1];
573 /* Optional: use the basename of the path only. */
574 if ((end = strrchr(file, '/')) != NULL)
578 es = ERR_get_state();
580 es->top = (es->top + 1) % ERR_NUM_ERRORS;
581 if (es->top == es->bottom)
582 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS;
583 es->err_flags[es->top] = 0;
584 es->err_buffer[es->top] = ERR_PACK(lib, func, reason);
585 es->err_file[es->top] = file;
586 es->err_line[es->top] = line;
587 err_clear_data(es, es->top);
590 void ERR_clear_error(void)
595 es = ERR_get_state();
597 for (i = 0; i < ERR_NUM_ERRORS; i++) {
600 es->top = es->bottom = 0;
603 unsigned long ERR_get_error(void)
605 return (get_error_values(1, 0, NULL, NULL, NULL, NULL));
608 unsigned long ERR_get_error_line(const char **file, int *line)
610 return (get_error_values(1, 0, file, line, NULL, NULL));
613 unsigned long ERR_get_error_line_data(const char **file, int *line,
614 const char **data, int *flags)
616 return (get_error_values(1, 0, file, line, data, flags));
619 unsigned long ERR_peek_error(void)
621 return (get_error_values(0, 0, NULL, NULL, NULL, NULL));
624 unsigned long ERR_peek_error_line(const char **file, int *line)
626 return (get_error_values(0, 0, file, line, NULL, NULL));
629 unsigned long ERR_peek_error_line_data(const char **file, int *line,
630 const char **data, int *flags)
632 return (get_error_values(0, 0, file, line, data, flags));
635 unsigned long ERR_peek_last_error(void)
637 return (get_error_values(0, 1, NULL, NULL, NULL, NULL));
640 unsigned long ERR_peek_last_error_line(const char **file, int *line)
642 return (get_error_values(0, 1, file, line, NULL, NULL));
645 unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
646 const char **data, int *flags)
648 return (get_error_values(0, 1, file, line, data, flags));
651 static unsigned long get_error_values(int inc, int top, const char **file,
652 int *line, const char **data,
659 es = ERR_get_state();
671 return ERR_R_INTERNAL_ERROR;
674 if (es->bottom == es->top)
677 i = es->top; /* last error */
679 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */
681 ret = es->err_buffer[i];
684 es->err_buffer[i] = 0;
687 if ((file != NULL) && (line != NULL)) {
688 if (es->err_file[i] == NULL) {
693 *file = es->err_file[i];
695 *line = es->err_line[i];
701 err_clear_data(es, i);
704 if (es->err_data[i] == NULL) {
709 *data = es->err_data[i];
711 *flags = es->err_data_flags[i];
717 void ERR_error_string_n(unsigned long e, char *buf, size_t len)
719 char lsbuf[64], fsbuf[64], rsbuf[64];
720 const char *ls, *fs, *rs;
721 unsigned long l, f, r;
725 r = ERR_GET_REASON(e);
727 ls = ERR_lib_error_string(e);
728 fs = ERR_func_error_string(e);
729 rs = ERR_reason_error_string(e);
732 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l);
734 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f);
736 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r);
738 BIO_snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls ? ls : lsbuf,
739 fs ? fs : fsbuf, rs ? rs : rsbuf);
740 if (strlen(buf) == len - 1) {
742 * output may be truncated; make sure we always have 5
743 * colon-separated fields, i.e. 4 colons ...
746 if (len > NUM_COLONS) { /* ... if possible */
750 for (i = 0; i < NUM_COLONS; i++) {
751 char *colon = strchr(s, ':');
752 if (colon == NULL || colon > &buf[len - 1] - NUM_COLONS + i) {
754 * set colon no. i at last possible position (buf[len-1]
755 * is the terminating 0)
757 colon = &buf[len - 1] - NUM_COLONS + i;
766 /* BAD for multi-threading: uses a local buffer if ret == NULL */
768 * ERR_error_string_n should be used instead for ret != NULL as
769 * ERR_error_string cannot know how large the buffer is
771 char *ERR_error_string(unsigned long e, char *ret)
773 static char buf[256];
777 ERR_error_string_n(e, ret, 256);
782 LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void)
784 return get_hash(0, 1);
787 LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void)
789 return int_thread_get(0, 1);
792 void ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash)
794 int_thread_release(hash);
797 const char *ERR_lib_error_string(unsigned long e)
799 ERR_STRING_DATA d, *p;
803 d.error = ERR_PACK(l, 0, 0);
804 p = int_err_get_item(&d);
805 return ((p == NULL) ? NULL : p->string);
808 const char *ERR_func_error_string(unsigned long e)
810 ERR_STRING_DATA d, *p;
815 d.error = ERR_PACK(l, f, 0);
816 p = int_err_get_item(&d);
817 return ((p == NULL) ? NULL : p->string);
820 const char *ERR_reason_error_string(unsigned long e)
822 ERR_STRING_DATA d, *p = NULL;
826 r = ERR_GET_REASON(e);
827 d.error = ERR_PACK(l, 0, r);
828 p = int_err_get_item(&d);
830 d.error = ERR_PACK(0, 0, r);
831 p = int_err_get_item(&d);
833 return ((p == NULL) ? NULL : p->string);
836 void ERR_remove_thread_state(const CRYPTO_THREADID *id)
841 CRYPTO_THREADID_cpy(&tmp.tid, id);
843 CRYPTO_THREADID_current(&tmp.tid);
845 * thread_del_item automatically destroys the LHASH if the number of
846 * items reaches zero.
848 int_thread_del_item(&tmp);
851 #if OPENSSL_API_COMPAT < 0x10000000L
852 void ERR_remove_state(unsigned long pid)
854 ERR_remove_thread_state(NULL);
858 ERR_STATE *ERR_get_state(void)
860 static ERR_STATE fallback;
861 ERR_STATE *ret, tmp, *tmpp = NULL;
865 CRYPTO_THREADID_current(&tid);
866 CRYPTO_THREADID_cpy(&tmp.tid, &tid);
867 ret = int_thread_get_item(&tmp);
869 /* ret == the error state, if NULL, make a new one */
871 ret = OPENSSL_malloc(sizeof(*ret));
874 CRYPTO_THREADID_cpy(&ret->tid, &tid);
877 for (i = 0; i < ERR_NUM_ERRORS; i++) {
878 ret->err_data[i] = NULL;
879 ret->err_data_flags[i] = 0;
881 tmpp = int_thread_set_item(ret);
882 /* To check if insertion failed, do a get. */
883 if (int_thread_get_item(ret) != ret) {
884 ERR_STATE_free(ret); /* could not insert it */
888 * If a race occurred in this function and we came second, tmpp is
889 * the first one that we just replaced.
891 ERR_STATE_free(tmpp);
896 int ERR_get_next_error_library(void)
900 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
901 ret = int_err_library_number++;
902 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
906 void ERR_set_error_data(char *data, int flags)
911 es = ERR_get_state();
915 i = ERR_NUM_ERRORS - 1;
917 err_clear_data(es, i);
918 es->err_data[i] = data;
919 es->err_data_flags[i] = flags;
922 void ERR_add_error_data(int num, ...)
926 ERR_add_error_vdata(num, args);
930 void ERR_add_error_vdata(int num, va_list args)
936 str = OPENSSL_malloc(s + 1);
942 for (i = 0; i < num; i++) {
943 a = va_arg(args, char *);
944 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */
949 p = OPENSSL_realloc(str, s + 1);
956 OPENSSL_strlcat(str, a, (size_t)s + 1);
959 ERR_set_error_data(str, ERR_TXT_MALLOCED | ERR_TXT_STRING);
962 int ERR_set_mark(void)
966 es = ERR_get_state();
968 if (es->bottom == es->top)
970 es->err_flags[es->top] |= ERR_FLAG_MARK;
974 int ERR_pop_to_mark(void)
978 es = ERR_get_state();
980 while (es->bottom != es->top
981 && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) {
982 err_clear(es, es->top);
985 es->top = ERR_NUM_ERRORS - 1;
988 if (es->bottom == es->top)
990 es->err_flags[es->top] &= ~ERR_FLAG_MARK;