2 * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
13 #include "internal/cryptlib_int.h"
14 #include "internal/err.h"
15 #include "internal/err_int.h"
16 #include <openssl/err.h>
17 #include <openssl/crypto.h>
18 #include <openssl/buffer.h>
19 #include <openssl/bio.h>
20 #include <openssl/opensslconf.h>
21 #include "internal/thread_once.h"
22 #include "internal/ctype.h"
23 #include "internal/constant_time_locl.h"
26 static int err_load_strings(const ERR_STRING_DATA *str);
28 static void ERR_STATE_free(ERR_STATE *s);
29 #ifndef OPENSSL_NO_ERR
30 static ERR_STRING_DATA ERR_str_libraries[] = {
31 {ERR_PACK(ERR_LIB_NONE, 0, 0), "unknown library"},
32 {ERR_PACK(ERR_LIB_SYS, 0, 0), "system library"},
33 {ERR_PACK(ERR_LIB_BN, 0, 0), "bignum routines"},
34 {ERR_PACK(ERR_LIB_RSA, 0, 0), "rsa routines"},
35 {ERR_PACK(ERR_LIB_DH, 0, 0), "Diffie-Hellman routines"},
36 {ERR_PACK(ERR_LIB_EVP, 0, 0), "digital envelope routines"},
37 {ERR_PACK(ERR_LIB_BUF, 0, 0), "memory buffer routines"},
38 {ERR_PACK(ERR_LIB_OBJ, 0, 0), "object identifier routines"},
39 {ERR_PACK(ERR_LIB_PEM, 0, 0), "PEM routines"},
40 {ERR_PACK(ERR_LIB_DSA, 0, 0), "dsa routines"},
41 {ERR_PACK(ERR_LIB_X509, 0, 0), "x509 certificate routines"},
42 {ERR_PACK(ERR_LIB_ASN1, 0, 0), "asn1 encoding routines"},
43 {ERR_PACK(ERR_LIB_CONF, 0, 0), "configuration file routines"},
44 {ERR_PACK(ERR_LIB_CRYPTO, 0, 0), "common libcrypto routines"},
45 {ERR_PACK(ERR_LIB_EC, 0, 0), "elliptic curve routines"},
46 {ERR_PACK(ERR_LIB_ECDSA, 0, 0), "ECDSA routines"},
47 {ERR_PACK(ERR_LIB_ECDH, 0, 0), "ECDH routines"},
48 {ERR_PACK(ERR_LIB_SSL, 0, 0), "SSL routines"},
49 {ERR_PACK(ERR_LIB_BIO, 0, 0), "BIO routines"},
50 {ERR_PACK(ERR_LIB_PKCS7, 0, 0), "PKCS7 routines"},
51 {ERR_PACK(ERR_LIB_X509V3, 0, 0), "X509 V3 routines"},
52 {ERR_PACK(ERR_LIB_PKCS12, 0, 0), "PKCS12 routines"},
53 {ERR_PACK(ERR_LIB_RAND, 0, 0), "random number generator"},
54 {ERR_PACK(ERR_LIB_DSO, 0, 0), "DSO support routines"},
55 {ERR_PACK(ERR_LIB_TS, 0, 0), "time stamp routines"},
56 {ERR_PACK(ERR_LIB_ENGINE, 0, 0), "engine routines"},
57 {ERR_PACK(ERR_LIB_OCSP, 0, 0), "OCSP routines"},
58 {ERR_PACK(ERR_LIB_UI, 0, 0), "UI routines"},
59 {ERR_PACK(ERR_LIB_FIPS, 0, 0), "FIPS routines"},
60 {ERR_PACK(ERR_LIB_CMS, 0, 0), "CMS routines"},
61 {ERR_PACK(ERR_LIB_HMAC, 0, 0), "HMAC routines"},
62 {ERR_PACK(ERR_LIB_CT, 0, 0), "CT routines"},
63 {ERR_PACK(ERR_LIB_ASYNC, 0, 0), "ASYNC routines"},
64 {ERR_PACK(ERR_LIB_KDF, 0, 0), "KDF routines"},
65 {ERR_PACK(ERR_LIB_OSSL_STORE, 0, 0), "STORE routines"},
66 {ERR_PACK(ERR_LIB_SM2, 0, 0), "SM2 routines"},
70 static ERR_STRING_DATA ERR_str_functs[] = {
71 {ERR_PACK(0, SYS_F_FOPEN, 0), "fopen"},
72 {ERR_PACK(0, SYS_F_CONNECT, 0), "connect"},
73 {ERR_PACK(0, SYS_F_GETSERVBYNAME, 0), "getservbyname"},
74 {ERR_PACK(0, SYS_F_SOCKET, 0), "socket"},
75 {ERR_PACK(0, SYS_F_IOCTLSOCKET, 0), "ioctlsocket"},
76 {ERR_PACK(0, SYS_F_BIND, 0), "bind"},
77 {ERR_PACK(0, SYS_F_LISTEN, 0), "listen"},
78 {ERR_PACK(0, SYS_F_ACCEPT, 0), "accept"},
79 # ifdef OPENSSL_SYS_WINDOWS
80 {ERR_PACK(0, SYS_F_WSASTARTUP, 0), "WSAstartup"},
82 {ERR_PACK(0, SYS_F_OPENDIR, 0), "opendir"},
83 {ERR_PACK(0, SYS_F_FREAD, 0), "fread"},
84 {ERR_PACK(0, SYS_F_GETADDRINFO, 0), "getaddrinfo"},
85 {ERR_PACK(0, SYS_F_GETNAMEINFO, 0), "getnameinfo"},
86 {ERR_PACK(0, SYS_F_SETSOCKOPT, 0), "setsockopt"},
87 {ERR_PACK(0, SYS_F_GETSOCKOPT, 0), "getsockopt"},
88 {ERR_PACK(0, SYS_F_GETSOCKNAME, 0), "getsockname"},
89 {ERR_PACK(0, SYS_F_GETHOSTBYNAME, 0), "gethostbyname"},
90 {ERR_PACK(0, SYS_F_FFLUSH, 0), "fflush"},
91 {ERR_PACK(0, SYS_F_OPEN, 0), "open"},
92 {ERR_PACK(0, SYS_F_CLOSE, 0), "close"},
93 {ERR_PACK(0, SYS_F_IOCTL, 0), "ioctl"},
94 {ERR_PACK(0, SYS_F_STAT, 0), "stat"},
95 {ERR_PACK(0, SYS_F_FCNTL, 0), "fcntl"},
96 {ERR_PACK(0, SYS_F_FSTAT, 0), "fstat"},
100 static ERR_STRING_DATA ERR_str_reasons[] = {
101 {ERR_R_SYS_LIB, "system lib"},
102 {ERR_R_BN_LIB, "BN lib"},
103 {ERR_R_RSA_LIB, "RSA lib"},
104 {ERR_R_DH_LIB, "DH lib"},
105 {ERR_R_EVP_LIB, "EVP lib"},
106 {ERR_R_BUF_LIB, "BUF lib"},
107 {ERR_R_OBJ_LIB, "OBJ lib"},
108 {ERR_R_PEM_LIB, "PEM lib"},
109 {ERR_R_DSA_LIB, "DSA lib"},
110 {ERR_R_X509_LIB, "X509 lib"},
111 {ERR_R_ASN1_LIB, "ASN1 lib"},
112 {ERR_R_EC_LIB, "EC lib"},
113 {ERR_R_BIO_LIB, "BIO lib"},
114 {ERR_R_PKCS7_LIB, "PKCS7 lib"},
115 {ERR_R_X509V3_LIB, "X509V3 lib"},
116 {ERR_R_ENGINE_LIB, "ENGINE lib"},
117 {ERR_R_UI_LIB, "UI lib"},
118 {ERR_R_OSSL_STORE_LIB, "STORE lib"},
119 {ERR_R_ECDSA_LIB, "ECDSA lib"},
121 {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"},
122 {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"},
124 {ERR_R_FATAL, "fatal"},
125 {ERR_R_MALLOC_FAILURE, "malloc failure"},
126 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED,
127 "called a function you should not call"},
128 {ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"},
129 {ERR_R_INTERNAL_ERROR, "internal error"},
130 {ERR_R_DISABLED, "called a function that was disabled at compile-time"},
131 {ERR_R_INIT_FAIL, "init fail"},
132 {ERR_R_OPERATION_FAIL, "operation fail"},
138 static CRYPTO_ONCE err_init = CRYPTO_ONCE_STATIC_INIT;
139 static int set_err_thread_local;
140 static CRYPTO_THREAD_LOCAL err_thread_local;
142 static CRYPTO_ONCE err_string_init = CRYPTO_ONCE_STATIC_INIT;
143 static CRYPTO_RWLOCK *err_string_lock;
145 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
151 static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL;
152 static int int_err_library_number = ERR_LIB_USER;
154 static unsigned long get_error_values(int inc, int top, const char **file,
155 int *line, const char **data,
158 static unsigned long err_string_data_hash(const ERR_STRING_DATA *a)
160 unsigned long ret, l;
163 ret = l ^ ERR_GET_LIB(l) ^ ERR_GET_FUNC(l);
164 return (ret ^ ret % 19 * 13);
167 static int err_string_data_cmp(const ERR_STRING_DATA *a,
168 const ERR_STRING_DATA *b)
170 if (a->error == b->error)
172 return a->error > b->error ? 1 : -1;
175 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d)
177 ERR_STRING_DATA *p = NULL;
179 CRYPTO_THREAD_read_lock(err_string_lock);
180 p = lh_ERR_STRING_DATA_retrieve(int_error_hash, d);
181 CRYPTO_THREAD_unlock(err_string_lock);
186 #ifndef OPENSSL_NO_ERR
187 /* A measurement on Linux 2018-11-21 showed about 3.5kib */
188 # define SPACE_SYS_STR_REASONS 4 * 1024
189 # define NUM_SYS_STR_REASONS 127
191 static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
193 * SYS_str_reasons is filled with copies of strerror() results at
194 * initialization. 'errno' values up to 127 should cover all usual errors,
195 * others will be displayed numerically by ERR_error_string. It is crucial
196 * that we have something for each reason code that occurs in
197 * ERR_str_reasons, or bogus reason strings will be returned for SYSerr(),
198 * which always gets an errno value and never one of those 'standard' reason
202 static void build_SYS_str_reasons(void)
204 /* OPENSSL_malloc cannot be used here, use static storage instead */
205 static char strerror_pool[SPACE_SYS_STR_REASONS];
206 char *cur = strerror_pool;
210 int saveerrno = get_last_sys_error();
212 CRYPTO_THREAD_write_lock(err_string_lock);
214 CRYPTO_THREAD_unlock(err_string_lock);
218 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) {
219 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
221 str->error = ERR_PACK(ERR_LIB_SYS, 0, i);
222 if (str->string == NULL) {
223 if (openssl_strerror_r(i, cur, sizeof(strerror_pool) - cnt)) {
224 size_t l = strlen(cur);
228 if (cnt > sizeof(strerror_pool))
229 cnt = sizeof(strerror_pool);
233 * VMS has an unusual quirk of adding spaces at the end of
234 * some (most? all?) messages. Lets trim them off.
236 while (ossl_isspace(cur[-1])) {
244 if (str->string == NULL)
245 str->string = "unknown";
249 * Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, as
250 * required by ERR_load_strings.
255 CRYPTO_THREAD_unlock(err_string_lock);
256 /* openssl_strerror_r could change errno, but we want to preserve it */
257 set_sys_error(saveerrno);
258 err_load_strings(SYS_str_reasons);
262 #define err_clear_data(p, i) \
264 if ((p)->err_data_flags[i] & ERR_TXT_MALLOCED) {\
265 OPENSSL_free((p)->err_data[i]); \
266 (p)->err_data[i] = NULL; \
268 (p)->err_data_flags[i] = 0; \
271 #define err_clear(p, i) \
273 err_clear_data(p, i); \
274 (p)->err_flags[i] = 0; \
275 (p)->err_buffer[i] = 0; \
276 (p)->err_file[i] = NULL; \
277 (p)->err_line[i] = -1; \
280 static void ERR_STATE_free(ERR_STATE *s)
286 for (i = 0; i < ERR_NUM_ERRORS; i++) {
287 err_clear_data(s, i);
292 DEFINE_RUN_ONCE_STATIC(do_err_strings_init)
294 if (!OPENSSL_init_crypto(0, NULL))
296 err_string_lock = CRYPTO_THREAD_lock_new();
297 if (err_string_lock == NULL)
299 int_error_hash = lh_ERR_STRING_DATA_new(err_string_data_hash,
300 err_string_data_cmp);
301 if (int_error_hash == NULL) {
302 CRYPTO_THREAD_lock_free(err_string_lock);
303 err_string_lock = NULL;
309 void err_cleanup(void)
311 if (set_err_thread_local != 0)
312 CRYPTO_THREAD_cleanup_local(&err_thread_local);
313 CRYPTO_THREAD_lock_free(err_string_lock);
314 err_string_lock = NULL;
315 lh_ERR_STRING_DATA_free(int_error_hash);
316 int_error_hash = NULL;
320 * Legacy; pack in the library.
322 static void err_patch(int lib, ERR_STRING_DATA *str)
324 unsigned long plib = ERR_PACK(lib, 0, 0);
326 for (; str->error != 0; str++)
331 * Hash in |str| error strings. Assumes the URN_ONCE was done.
333 static int err_load_strings(const ERR_STRING_DATA *str)
335 CRYPTO_THREAD_write_lock(err_string_lock);
336 for (; str->error; str++)
337 (void)lh_ERR_STRING_DATA_insert(int_error_hash,
338 (ERR_STRING_DATA *)str);
339 CRYPTO_THREAD_unlock(err_string_lock);
343 int ERR_load_ERR_strings(void)
345 #ifndef OPENSSL_NO_ERR
346 if (!RUN_ONCE(&err_string_init, do_err_strings_init))
349 err_load_strings(ERR_str_libraries);
350 err_load_strings(ERR_str_reasons);
351 err_patch(ERR_LIB_SYS, ERR_str_functs);
352 err_load_strings(ERR_str_functs);
353 build_SYS_str_reasons();
358 int ERR_load_strings(int lib, ERR_STRING_DATA *str)
360 if (ERR_load_ERR_strings() == 0)
364 err_load_strings(str);
368 int ERR_load_strings_const(const ERR_STRING_DATA *str)
370 if (ERR_load_ERR_strings() == 0)
372 err_load_strings(str);
376 int ERR_unload_strings(int lib, ERR_STRING_DATA *str)
378 if (!RUN_ONCE(&err_string_init, do_err_strings_init))
381 CRYPTO_THREAD_write_lock(err_string_lock);
383 * We don't need to ERR_PACK the lib, since that was done (to
384 * the table) when it was loaded.
386 for (; str->error; str++)
387 (void)lh_ERR_STRING_DATA_delete(int_error_hash, str);
388 CRYPTO_THREAD_unlock(err_string_lock);
393 void err_free_strings_int(void)
395 if (!RUN_ONCE(&err_string_init, do_err_strings_init))
399 /********************************************************/
401 void ERR_put_error(int lib, int func, int reason, const char *file, int line)
407 * In the BS2000-OSD POSIX subsystem, the compiler generates path names
408 * in the form "*POSIX(/etc/passwd)". This dirty hack strips them to
409 * something sensible. @@@ We shouldn't modify a const string, though.
411 if (strncmp(file, "*POSIX(", sizeof("*POSIX(") - 1) == 0) {
414 /* Skip the "*POSIX(" prefix */
415 file += sizeof("*POSIX(") - 1;
416 end = &file[strlen(file) - 1];
419 /* Optional: use the basename of the path only. */
420 if ((end = strrchr(file, '/')) != NULL)
424 es = ERR_get_state();
428 es->top = (es->top + 1) % ERR_NUM_ERRORS;
429 if (es->top == es->bottom)
430 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS;
431 es->err_flags[es->top] = 0;
432 es->err_buffer[es->top] = ERR_PACK(lib, func, reason);
433 es->err_file[es->top] = file;
434 es->err_line[es->top] = line;
435 err_clear_data(es, es->top);
438 void ERR_clear_error(void)
443 es = ERR_get_state();
447 for (i = 0; i < ERR_NUM_ERRORS; i++) {
450 es->top = es->bottom = 0;
453 unsigned long ERR_get_error(void)
455 return get_error_values(1, 0, NULL, NULL, NULL, NULL);
458 unsigned long ERR_get_error_line(const char **file, int *line)
460 return get_error_values(1, 0, file, line, NULL, NULL);
463 unsigned long ERR_get_error_line_data(const char **file, int *line,
464 const char **data, int *flags)
466 return get_error_values(1, 0, file, line, data, flags);
469 unsigned long ERR_peek_error(void)
471 return get_error_values(0, 0, NULL, NULL, NULL, NULL);
474 unsigned long ERR_peek_error_line(const char **file, int *line)
476 return get_error_values(0, 0, file, line, NULL, NULL);
479 unsigned long ERR_peek_error_line_data(const char **file, int *line,
480 const char **data, int *flags)
482 return get_error_values(0, 0, file, line, data, flags);
485 unsigned long ERR_peek_last_error(void)
487 return get_error_values(0, 1, NULL, NULL, NULL, NULL);
490 unsigned long ERR_peek_last_error_line(const char **file, int *line)
492 return get_error_values(0, 1, file, line, NULL, NULL);
495 unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
496 const char **data, int *flags)
498 return get_error_values(0, 1, file, line, data, flags);
501 static unsigned long get_error_values(int inc, int top, const char **file,
502 int *line, const char **data,
509 es = ERR_get_state();
523 return ERR_R_INTERNAL_ERROR;
526 while (es->bottom != es->top) {
527 if (es->err_flags[es->top] & ERR_FLAG_CLEAR) {
528 err_clear(es, es->top);
529 es->top = es->top > 0 ? es->top - 1 : ERR_NUM_ERRORS - 1;
532 i = (es->bottom + 1) % ERR_NUM_ERRORS;
533 if (es->err_flags[i] & ERR_FLAG_CLEAR) {
535 err_clear(es, es->bottom);
541 if (es->bottom == es->top)
545 i = es->top; /* last error */
547 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */
549 ret = es->err_buffer[i];
552 es->err_buffer[i] = 0;
555 if (file != NULL && line != NULL) {
556 if (es->err_file[i] == NULL) {
560 *file = es->err_file[i];
561 *line = es->err_line[i];
567 err_clear_data(es, i);
570 if (es->err_data[i] == NULL) {
575 *data = es->err_data[i];
577 *flags = es->err_data_flags[i];
583 void ERR_error_string_n(unsigned long e, char *buf, size_t len)
585 char lsbuf[64], fsbuf[64], rsbuf[64];
586 const char *ls, *fs, *rs;
587 unsigned long l, f, r;
593 ls = ERR_lib_error_string(e);
595 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l);
599 fs = ERR_func_error_string(e);
602 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f);
606 rs = ERR_reason_error_string(e);
607 r = ERR_GET_REASON(e);
609 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r);
613 BIO_snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, fs, rs);
614 if (strlen(buf) == len - 1) {
615 /* Didn't fit; use a minimal format. */
616 BIO_snprintf(buf, len, "err:%lx:%lx:%lx:%lx", e, l, f, r);
621 * ERR_error_string_n should be used instead for ret != NULL as
622 * ERR_error_string cannot know how large the buffer is
624 char *ERR_error_string(unsigned long e, char *ret)
626 static char buf[256];
630 ERR_error_string_n(e, ret, (int)sizeof(buf));
634 const char *ERR_lib_error_string(unsigned long e)
636 ERR_STRING_DATA d, *p;
639 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
644 d.error = ERR_PACK(l, 0, 0);
645 p = int_err_get_item(&d);
646 return ((p == NULL) ? NULL : p->string);
649 const char *ERR_func_error_string(unsigned long e)
651 ERR_STRING_DATA d, *p;
654 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
660 d.error = ERR_PACK(l, f, 0);
661 p = int_err_get_item(&d);
662 return ((p == NULL) ? NULL : p->string);
665 const char *ERR_reason_error_string(unsigned long e)
667 ERR_STRING_DATA d, *p = NULL;
670 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
675 r = ERR_GET_REASON(e);
676 d.error = ERR_PACK(l, 0, r);
677 p = int_err_get_item(&d);
679 d.error = ERR_PACK(0, 0, r);
680 p = int_err_get_item(&d);
682 return ((p == NULL) ? NULL : p->string);
685 void err_delete_thread_state(void)
687 ERR_STATE *state = CRYPTO_THREAD_get_local(&err_thread_local);
691 CRYPTO_THREAD_set_local(&err_thread_local, NULL);
692 ERR_STATE_free(state);
695 #if OPENSSL_API_COMPAT < 0x10100000L
696 void ERR_remove_thread_state(void *dummy)
701 #if OPENSSL_API_COMPAT < 0x10000000L
702 void ERR_remove_state(unsigned long pid)
707 DEFINE_RUN_ONCE_STATIC(err_do_init)
709 set_err_thread_local = 1;
710 return CRYPTO_THREAD_init_local(&err_thread_local, NULL);
713 ERR_STATE *ERR_get_state(void)
716 int saveerrno = get_last_sys_error();
718 if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL))
721 if (!RUN_ONCE(&err_init, err_do_init))
724 state = CRYPTO_THREAD_get_local(&err_thread_local);
725 if (state == (ERR_STATE*)-1)
729 if (!CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)-1))
732 if ((state = OPENSSL_zalloc(sizeof(*state))) == NULL) {
733 CRYPTO_THREAD_set_local(&err_thread_local, NULL);
737 if (!ossl_init_thread_start(OPENSSL_INIT_THREAD_ERR_STATE)
738 || !CRYPTO_THREAD_set_local(&err_thread_local, state)) {
739 ERR_STATE_free(state);
740 CRYPTO_THREAD_set_local(&err_thread_local, NULL);
744 /* Ignore failures from these */
745 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
748 set_sys_error(saveerrno);
753 * err_shelve_state returns the current thread local error state
754 * and freezes the error module until err_unshelve_state is called.
756 int err_shelve_state(void **state)
758 int saveerrno = get_last_sys_error();
761 * Note, at present our only caller is OPENSSL_init_crypto(), indirectly
762 * via ossl_init_load_crypto_nodelete(), by which point the requested
763 * "base" initialization has already been performed, so the below call is a
764 * NOOP, that re-enters OPENSSL_init_crypto() only to quickly return.
766 * If are no other valid callers of this function, the call below can be
767 * removed, avoiding the re-entry into OPENSSL_init_crypto(). If there are
768 * potential uses that are not from inside OPENSSL_init_crypto(), then this
769 * call is needed, but some care is required to make sure that the re-entry
772 if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL))
775 if (!RUN_ONCE(&err_init, err_do_init))
778 *state = CRYPTO_THREAD_get_local(&err_thread_local);
779 if (!CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)-1))
782 set_sys_error(saveerrno);
787 * err_unshelve_state restores the error state that was returned
788 * by err_shelve_state previously.
790 void err_unshelve_state(void* state)
792 if (state != (void*)-1)
793 CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)state);
796 int ERR_get_next_error_library(void)
800 if (!RUN_ONCE(&err_string_init, do_err_strings_init))
803 CRYPTO_THREAD_write_lock(err_string_lock);
804 ret = int_err_library_number++;
805 CRYPTO_THREAD_unlock(err_string_lock);
809 static int err_set_error_data_int(char *data, int flags)
814 es = ERR_get_state();
820 err_clear_data(es, i);
821 es->err_data[i] = data;
822 es->err_data_flags[i] = flags;
827 void ERR_set_error_data(char *data, int flags)
830 * This function is void so we cannot propagate the error return. Since it
831 * is also in the public API we can't change the return type.
833 err_set_error_data_int(data, flags);
836 void ERR_add_error_data(int num, ...)
840 ERR_add_error_vdata(num, args);
844 void ERR_add_error_vdata(int num, va_list args)
850 if ((str = OPENSSL_malloc(s + 1)) == NULL) {
851 /* ERRerr(ERR_F_ERR_ADD_ERROR_VDATA, ERR_R_MALLOC_FAILURE); */
857 for (i = 0; i < num; i++) {
858 a = va_arg(args, char *);
864 p = OPENSSL_realloc(str, s + 1);
871 OPENSSL_strlcat(str, a, (size_t)s + 1);
873 if (!err_set_error_data_int(str, ERR_TXT_MALLOCED | ERR_TXT_STRING))
877 int ERR_set_mark(void)
881 es = ERR_get_state();
885 if (es->bottom == es->top)
887 es->err_flags[es->top] |= ERR_FLAG_MARK;
891 int ERR_pop_to_mark(void)
895 es = ERR_get_state();
899 while (es->bottom != es->top
900 && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) {
901 err_clear(es, es->top);
902 es->top = es->top > 0 ? es->top - 1 : ERR_NUM_ERRORS - 1;
905 if (es->bottom == es->top)
907 es->err_flags[es->top] &= ~ERR_FLAG_MARK;
911 int ERR_clear_last_mark(void)
916 es = ERR_get_state();
921 while (es->bottom != top
922 && (es->err_flags[top] & ERR_FLAG_MARK) == 0) {
923 top = top > 0 ? top - 1 : ERR_NUM_ERRORS - 1;
926 if (es->bottom == top)
928 es->err_flags[top] &= ~ERR_FLAG_MARK;
932 void err_clear_last_constant_time(int clear)
937 es = ERR_get_state();
944 * Flag error as cleared but remove it elsewhere to avoid two errors
945 * accessing the same error stack location, revealing timing information.
947 clear = constant_time_select_int(constant_time_eq_int(clear, 0),
949 es->err_flags[top] |= clear;