2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (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_CRMF, 0, 0), "CRMF routines"},
62 {ERR_PACK(ERR_LIB_CMP, 0, 0), "CMP routines"},
63 {ERR_PACK(ERR_LIB_HMAC, 0, 0), "HMAC routines"},
64 {ERR_PACK(ERR_LIB_CT, 0, 0), "CT routines"},
65 {ERR_PACK(ERR_LIB_ASYNC, 0, 0), "ASYNC routines"},
66 {ERR_PACK(ERR_LIB_KDF, 0, 0), "KDF routines"},
67 {ERR_PACK(ERR_LIB_OSSL_STORE, 0, 0), "STORE routines"},
68 {ERR_PACK(ERR_LIB_SM2, 0, 0), "SM2 routines"},
69 {ERR_PACK(ERR_LIB_ESS, 0, 0), "ESS routines"},
70 {ERR_PACK(ERR_LIB_PROV, 0, 0), "Provider routines"},
74 static ERR_STRING_DATA ERR_str_functs[] = {
75 {ERR_PACK(0, SYS_F_FOPEN, 0), "fopen"},
76 {ERR_PACK(0, SYS_F_CONNECT, 0), "connect"},
77 {ERR_PACK(0, SYS_F_GETSERVBYNAME, 0), "getservbyname"},
78 {ERR_PACK(0, SYS_F_SOCKET, 0), "socket"},
79 {ERR_PACK(0, SYS_F_IOCTLSOCKET, 0), "ioctlsocket"},
80 {ERR_PACK(0, SYS_F_BIND, 0), "bind"},
81 {ERR_PACK(0, SYS_F_LISTEN, 0), "listen"},
82 {ERR_PACK(0, SYS_F_ACCEPT, 0), "accept"},
83 # ifdef OPENSSL_SYS_WINDOWS
84 {ERR_PACK(0, SYS_F_WSASTARTUP, 0), "WSAstartup"},
86 {ERR_PACK(0, SYS_F_OPENDIR, 0), "opendir"},
87 {ERR_PACK(0, SYS_F_FREAD, 0), "fread"},
88 {ERR_PACK(0, SYS_F_GETADDRINFO, 0), "getaddrinfo"},
89 {ERR_PACK(0, SYS_F_GETNAMEINFO, 0), "getnameinfo"},
90 {ERR_PACK(0, SYS_F_SETSOCKOPT, 0), "setsockopt"},
91 {ERR_PACK(0, SYS_F_GETSOCKOPT, 0), "getsockopt"},
92 {ERR_PACK(0, SYS_F_GETSOCKNAME, 0), "getsockname"},
93 {ERR_PACK(0, SYS_F_GETHOSTBYNAME, 0), "gethostbyname"},
94 {ERR_PACK(0, SYS_F_FFLUSH, 0), "fflush"},
95 {ERR_PACK(0, SYS_F_OPEN, 0), "open"},
96 {ERR_PACK(0, SYS_F_CLOSE, 0), "close"},
97 {ERR_PACK(0, SYS_F_IOCTL, 0), "ioctl"},
98 {ERR_PACK(0, SYS_F_STAT, 0), "stat"},
99 {ERR_PACK(0, SYS_F_FCNTL, 0), "fcntl"},
100 {ERR_PACK(0, SYS_F_FSTAT, 0), "fstat"},
104 static ERR_STRING_DATA ERR_str_reasons[] = {
105 {ERR_R_SYS_LIB, "system lib"},
106 {ERR_R_BN_LIB, "BN lib"},
107 {ERR_R_RSA_LIB, "RSA lib"},
108 {ERR_R_DH_LIB, "DH lib"},
109 {ERR_R_EVP_LIB, "EVP lib"},
110 {ERR_R_BUF_LIB, "BUF lib"},
111 {ERR_R_OBJ_LIB, "OBJ lib"},
112 {ERR_R_PEM_LIB, "PEM lib"},
113 {ERR_R_DSA_LIB, "DSA lib"},
114 {ERR_R_X509_LIB, "X509 lib"},
115 {ERR_R_ASN1_LIB, "ASN1 lib"},
116 {ERR_R_EC_LIB, "EC lib"},
117 {ERR_R_BIO_LIB, "BIO lib"},
118 {ERR_R_PKCS7_LIB, "PKCS7 lib"},
119 {ERR_R_X509V3_LIB, "X509V3 lib"},
120 {ERR_R_ENGINE_LIB, "ENGINE lib"},
121 {ERR_R_UI_LIB, "UI lib"},
122 {ERR_R_OSSL_STORE_LIB, "STORE lib"},
123 {ERR_R_ECDSA_LIB, "ECDSA lib"},
125 {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"},
126 {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"},
128 {ERR_R_FATAL, "fatal"},
129 {ERR_R_MALLOC_FAILURE, "malloc failure"},
130 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED,
131 "called a function you should not call"},
132 {ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"},
133 {ERR_R_INTERNAL_ERROR, "internal error"},
134 {ERR_R_DISABLED, "called a function that was disabled at compile-time"},
135 {ERR_R_INIT_FAIL, "init fail"},
136 {ERR_R_OPERATION_FAIL, "operation fail"},
142 static CRYPTO_ONCE err_init = CRYPTO_ONCE_STATIC_INIT;
143 static int set_err_thread_local;
144 static CRYPTO_THREAD_LOCAL err_thread_local;
146 static CRYPTO_ONCE err_string_init = CRYPTO_ONCE_STATIC_INIT;
147 static CRYPTO_RWLOCK *err_string_lock;
149 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
155 static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL;
156 static int int_err_library_number = ERR_LIB_USER;
158 static unsigned long get_error_values(int inc, int top, const char **file,
159 int *line, const char **data,
162 static unsigned long err_string_data_hash(const ERR_STRING_DATA *a)
164 unsigned long ret, l;
167 ret = l ^ ERR_GET_LIB(l) ^ ERR_GET_FUNC(l);
168 return (ret ^ ret % 19 * 13);
171 static int err_string_data_cmp(const ERR_STRING_DATA *a,
172 const ERR_STRING_DATA *b)
174 if (a->error == b->error)
176 return a->error > b->error ? 1 : -1;
179 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d)
181 ERR_STRING_DATA *p = NULL;
183 CRYPTO_THREAD_read_lock(err_string_lock);
184 p = lh_ERR_STRING_DATA_retrieve(int_error_hash, d);
185 CRYPTO_THREAD_unlock(err_string_lock);
190 #ifndef OPENSSL_NO_ERR
191 /* 2019-05-21: Russian and Ukrainian locales on Linux require more than 6,5 kB */
192 # define SPACE_SYS_STR_REASONS 8 * 1024
193 # define NUM_SYS_STR_REASONS 127
195 static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
197 * SYS_str_reasons is filled with copies of strerror() results at
198 * initialization. 'errno' values up to 127 should cover all usual errors,
199 * others will be displayed numerically by ERR_error_string. It is crucial
200 * that we have something for each reason code that occurs in
201 * ERR_str_reasons, or bogus reason strings will be returned for SYSerr(),
202 * which always gets an errno value and never one of those 'standard' reason
206 static void build_SYS_str_reasons(void)
208 /* OPENSSL_malloc cannot be used here, use static storage instead */
209 static char strerror_pool[SPACE_SYS_STR_REASONS];
210 char *cur = strerror_pool;
214 int saveerrno = get_last_sys_error();
216 CRYPTO_THREAD_write_lock(err_string_lock);
218 CRYPTO_THREAD_unlock(err_string_lock);
222 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) {
223 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
225 str->error = ERR_PACK(ERR_LIB_SYS, 0, i);
227 * If we have used up all the space in strerror_pool,
228 * there's no point in calling openssl_strerror_r()
230 if (str->string == NULL && cnt < sizeof(strerror_pool)) {
231 if (openssl_strerror_r(i, cur, sizeof(strerror_pool) - cnt)) {
232 size_t l = strlen(cur);
239 * VMS has an unusual quirk of adding spaces at the end of
240 * some (most? all?) messages. Lets trim them off.
242 while (cur > strerror_pool && ossl_isspace(cur[-1])) {
250 if (str->string == NULL)
251 str->string = "unknown";
255 * Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, as
256 * required by ERR_load_strings.
261 CRYPTO_THREAD_unlock(err_string_lock);
262 /* openssl_strerror_r could change errno, but we want to preserve it */
263 set_sys_error(saveerrno);
264 err_load_strings(SYS_str_reasons);
268 #define err_clear_data(p, i) \
270 if ((p)->err_data_flags[i] & ERR_TXT_MALLOCED) {\
271 OPENSSL_free((p)->err_data[i]); \
272 (p)->err_data[i] = NULL; \
274 (p)->err_data_flags[i] = 0; \
277 #define err_clear(p, i) \
279 err_clear_data(p, i); \
280 (p)->err_flags[i] = 0; \
281 (p)->err_buffer[i] = 0; \
282 (p)->err_file[i] = NULL; \
283 (p)->err_line[i] = -1; \
286 static void ERR_STATE_free(ERR_STATE *s)
292 for (i = 0; i < ERR_NUM_ERRORS; i++) {
293 err_clear_data(s, i);
298 DEFINE_RUN_ONCE_STATIC(do_err_strings_init)
300 if (!OPENSSL_init_crypto(0, NULL))
302 err_string_lock = CRYPTO_THREAD_lock_new();
303 if (err_string_lock == NULL)
305 int_error_hash = lh_ERR_STRING_DATA_new(err_string_data_hash,
306 err_string_data_cmp);
307 if (int_error_hash == NULL) {
308 CRYPTO_THREAD_lock_free(err_string_lock);
309 err_string_lock = NULL;
315 void err_cleanup(void)
317 if (set_err_thread_local != 0)
318 CRYPTO_THREAD_cleanup_local(&err_thread_local);
319 CRYPTO_THREAD_lock_free(err_string_lock);
320 err_string_lock = NULL;
321 lh_ERR_STRING_DATA_free(int_error_hash);
322 int_error_hash = NULL;
326 * Legacy; pack in the library.
328 static void err_patch(int lib, ERR_STRING_DATA *str)
330 unsigned long plib = ERR_PACK(lib, 0, 0);
332 for (; str->error != 0; str++)
337 * Hash in |str| error strings. Assumes the URN_ONCE was done.
339 static int err_load_strings(const ERR_STRING_DATA *str)
341 CRYPTO_THREAD_write_lock(err_string_lock);
342 for (; str->error; str++)
343 (void)lh_ERR_STRING_DATA_insert(int_error_hash,
344 (ERR_STRING_DATA *)str);
345 CRYPTO_THREAD_unlock(err_string_lock);
349 int ERR_load_ERR_strings(void)
351 #ifndef OPENSSL_NO_ERR
352 if (!RUN_ONCE(&err_string_init, do_err_strings_init))
355 err_load_strings(ERR_str_libraries);
356 err_load_strings(ERR_str_reasons);
357 err_patch(ERR_LIB_SYS, ERR_str_functs);
358 err_load_strings(ERR_str_functs);
359 build_SYS_str_reasons();
364 int ERR_load_strings(int lib, ERR_STRING_DATA *str)
366 if (ERR_load_ERR_strings() == 0)
370 err_load_strings(str);
374 int ERR_load_strings_const(const ERR_STRING_DATA *str)
376 if (ERR_load_ERR_strings() == 0)
378 err_load_strings(str);
382 int ERR_unload_strings(int lib, ERR_STRING_DATA *str)
384 if (!RUN_ONCE(&err_string_init, do_err_strings_init))
387 CRYPTO_THREAD_write_lock(err_string_lock);
389 * We don't need to ERR_PACK the lib, since that was done (to
390 * the table) when it was loaded.
392 for (; str->error; str++)
393 (void)lh_ERR_STRING_DATA_delete(int_error_hash, str);
394 CRYPTO_THREAD_unlock(err_string_lock);
399 void err_free_strings_int(void)
401 if (!RUN_ONCE(&err_string_init, do_err_strings_init))
405 /********************************************************/
407 void ERR_put_error(int lib, int func, int reason, const char *file, int line)
413 * In the BS2000-OSD POSIX subsystem, the compiler generates path names
414 * in the form "*POSIX(/etc/passwd)". This dirty hack strips them to
415 * something sensible. @@@ We shouldn't modify a const string, though.
417 if (strncmp(file, "*POSIX(", sizeof("*POSIX(") - 1) == 0) {
420 /* Skip the "*POSIX(" prefix */
421 file += sizeof("*POSIX(") - 1;
422 end = &file[strlen(file) - 1];
425 /* Optional: use the basename of the path only. */
426 if ((end = strrchr(file, '/')) != NULL)
430 es = ERR_get_state();
434 es->top = (es->top + 1) % ERR_NUM_ERRORS;
435 if (es->top == es->bottom)
436 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS;
437 es->err_flags[es->top] = 0;
438 es->err_buffer[es->top] = ERR_PACK(lib, func, reason);
439 es->err_file[es->top] = file;
440 es->err_line[es->top] = line;
441 err_clear_data(es, es->top);
444 void ERR_clear_error(void)
449 es = ERR_get_state();
453 for (i = 0; i < ERR_NUM_ERRORS; i++) {
456 es->top = es->bottom = 0;
459 unsigned long ERR_get_error(void)
461 return get_error_values(1, 0, NULL, NULL, NULL, NULL);
464 unsigned long ERR_get_error_line(const char **file, int *line)
466 return get_error_values(1, 0, file, line, NULL, NULL);
469 unsigned long ERR_get_error_line_data(const char **file, int *line,
470 const char **data, int *flags)
472 return get_error_values(1, 0, file, line, data, flags);
475 unsigned long ERR_peek_error(void)
477 return get_error_values(0, 0, NULL, NULL, NULL, NULL);
480 unsigned long ERR_peek_error_line(const char **file, int *line)
482 return get_error_values(0, 0, file, line, NULL, NULL);
485 unsigned long ERR_peek_error_line_data(const char **file, int *line,
486 const char **data, int *flags)
488 return get_error_values(0, 0, file, line, data, flags);
491 unsigned long ERR_peek_last_error(void)
493 return get_error_values(0, 1, NULL, NULL, NULL, NULL);
496 unsigned long ERR_peek_last_error_line(const char **file, int *line)
498 return get_error_values(0, 1, file, line, NULL, NULL);
501 unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
502 const char **data, int *flags)
504 return get_error_values(0, 1, file, line, data, flags);
507 static unsigned long get_error_values(int inc, int top, const char **file,
508 int *line, const char **data,
515 es = ERR_get_state();
529 return ERR_R_INTERNAL_ERROR;
532 while (es->bottom != es->top) {
533 if (es->err_flags[es->top] & ERR_FLAG_CLEAR) {
534 err_clear(es, es->top);
535 es->top = es->top > 0 ? es->top - 1 : ERR_NUM_ERRORS - 1;
538 i = (es->bottom + 1) % ERR_NUM_ERRORS;
539 if (es->err_flags[i] & ERR_FLAG_CLEAR) {
541 err_clear(es, es->bottom);
547 if (es->bottom == es->top)
551 i = es->top; /* last error */
553 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */
555 ret = es->err_buffer[i];
558 es->err_buffer[i] = 0;
561 if (file != NULL && line != NULL) {
562 if (es->err_file[i] == NULL) {
566 *file = es->err_file[i];
567 *line = es->err_line[i];
573 err_clear_data(es, i);
576 if (es->err_data[i] == NULL) {
581 *data = es->err_data[i];
583 *flags = es->err_data_flags[i];
589 void ERR_error_string_n(unsigned long e, char *buf, size_t len)
591 char lsbuf[64], fsbuf[64], rsbuf[64];
592 const char *ls, *fs, *rs;
593 unsigned long l, f, r;
599 ls = ERR_lib_error_string(e);
601 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l);
605 fs = ERR_func_error_string(e);
608 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f);
612 rs = ERR_reason_error_string(e);
613 r = ERR_GET_REASON(e);
615 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r);
619 BIO_snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, fs, rs);
620 if (strlen(buf) == len - 1) {
621 /* Didn't fit; use a minimal format. */
622 BIO_snprintf(buf, len, "err:%lx:%lx:%lx:%lx", e, l, f, r);
627 * ERR_error_string_n should be used instead for ret != NULL as
628 * ERR_error_string cannot know how large the buffer is
630 char *ERR_error_string(unsigned long e, char *ret)
632 static char buf[256];
636 ERR_error_string_n(e, ret, (int)sizeof(buf));
640 const char *ERR_lib_error_string(unsigned long e)
642 ERR_STRING_DATA d, *p;
645 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
650 d.error = ERR_PACK(l, 0, 0);
651 p = int_err_get_item(&d);
652 return ((p == NULL) ? NULL : p->string);
655 const char *ERR_func_error_string(unsigned long e)
657 ERR_STRING_DATA d, *p;
660 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
666 d.error = ERR_PACK(l, f, 0);
667 p = int_err_get_item(&d);
668 return ((p == NULL) ? NULL : p->string);
671 const char *ERR_reason_error_string(unsigned long e)
673 ERR_STRING_DATA d, *p = NULL;
676 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
681 r = ERR_GET_REASON(e);
682 d.error = ERR_PACK(l, 0, r);
683 p = int_err_get_item(&d);
685 d.error = ERR_PACK(0, 0, r);
686 p = int_err_get_item(&d);
688 return ((p == NULL) ? NULL : p->string);
691 void err_delete_thread_state(void)
693 ERR_STATE *state = CRYPTO_THREAD_get_local(&err_thread_local);
697 CRYPTO_THREAD_set_local(&err_thread_local, NULL);
698 ERR_STATE_free(state);
701 #if !OPENSSL_API_1_1_0
702 void ERR_remove_thread_state(void *dummy)
707 #if !OPENSSL_API_1_0_0
708 void ERR_remove_state(unsigned long pid)
713 DEFINE_RUN_ONCE_STATIC(err_do_init)
715 set_err_thread_local = 1;
716 return CRYPTO_THREAD_init_local(&err_thread_local, NULL);
719 ERR_STATE *ERR_get_state(void)
722 int saveerrno = get_last_sys_error();
724 if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL))
727 if (!RUN_ONCE(&err_init, err_do_init))
730 state = CRYPTO_THREAD_get_local(&err_thread_local);
731 if (state == (ERR_STATE*)-1)
735 if (!CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)-1))
738 if ((state = OPENSSL_zalloc(sizeof(*state))) == NULL) {
739 CRYPTO_THREAD_set_local(&err_thread_local, NULL);
743 if (!ossl_init_thread_start(OPENSSL_INIT_THREAD_ERR_STATE)
744 || !CRYPTO_THREAD_set_local(&err_thread_local, state)) {
745 ERR_STATE_free(state);
746 CRYPTO_THREAD_set_local(&err_thread_local, NULL);
750 /* Ignore failures from these */
751 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
754 set_sys_error(saveerrno);
759 * err_shelve_state returns the current thread local error state
760 * and freezes the error module until err_unshelve_state is called.
762 int err_shelve_state(void **state)
764 int saveerrno = get_last_sys_error();
767 * Note, at present our only caller is OPENSSL_init_crypto(), indirectly
768 * via ossl_init_load_crypto_nodelete(), by which point the requested
769 * "base" initialization has already been performed, so the below call is a
770 * NOOP, that re-enters OPENSSL_init_crypto() only to quickly return.
772 * If are no other valid callers of this function, the call below can be
773 * removed, avoiding the re-entry into OPENSSL_init_crypto(). If there are
774 * potential uses that are not from inside OPENSSL_init_crypto(), then this
775 * call is needed, but some care is required to make sure that the re-entry
778 if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL))
781 if (!RUN_ONCE(&err_init, err_do_init))
784 *state = CRYPTO_THREAD_get_local(&err_thread_local);
785 if (!CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)-1))
788 set_sys_error(saveerrno);
793 * err_unshelve_state restores the error state that was returned
794 * by err_shelve_state previously.
796 void err_unshelve_state(void* state)
798 if (state != (void*)-1)
799 CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)state);
802 int ERR_get_next_error_library(void)
806 if (!RUN_ONCE(&err_string_init, do_err_strings_init))
809 CRYPTO_THREAD_write_lock(err_string_lock);
810 ret = int_err_library_number++;
811 CRYPTO_THREAD_unlock(err_string_lock);
815 static int err_set_error_data_int(char *data, int flags)
820 es = ERR_get_state();
826 err_clear_data(es, i);
827 es->err_data[i] = data;
828 es->err_data_flags[i] = flags;
833 void ERR_set_error_data(char *data, int flags)
836 * This function is void so we cannot propagate the error return. Since it
837 * is also in the public API we can't change the return type.
839 err_set_error_data_int(data, flags);
842 void ERR_add_error_data(int num, ...)
846 ERR_add_error_vdata(num, args);
850 void ERR_add_error_vdata(int num, va_list args)
856 if ((str = OPENSSL_malloc(s + 1)) == NULL) {
857 /* ERRerr(ERR_F_ERR_ADD_ERROR_VDATA, ERR_R_MALLOC_FAILURE); */
863 for (i = 0; i < num; i++) {
864 a = va_arg(args, char *);
870 p = OPENSSL_realloc(str, s + 1);
877 OPENSSL_strlcat(str, a, (size_t)s + 1);
879 if (!err_set_error_data_int(str, ERR_TXT_MALLOCED | ERR_TXT_STRING))
883 int ERR_set_mark(void)
887 es = ERR_get_state();
891 if (es->bottom == es->top)
893 es->err_flags[es->top] |= ERR_FLAG_MARK;
897 int ERR_pop_to_mark(void)
901 es = ERR_get_state();
905 while (es->bottom != es->top
906 && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) {
907 err_clear(es, es->top);
908 es->top = es->top > 0 ? es->top - 1 : ERR_NUM_ERRORS - 1;
911 if (es->bottom == es->top)
913 es->err_flags[es->top] &= ~ERR_FLAG_MARK;
917 int ERR_clear_last_mark(void)
922 es = ERR_get_state();
927 while (es->bottom != top
928 && (es->err_flags[top] & ERR_FLAG_MARK) == 0) {
929 top = top > 0 ? top - 1 : ERR_NUM_ERRORS - 1;
932 if (es->bottom == top)
934 es->err_flags[top] &= ~ERR_FLAG_MARK;
938 void err_clear_last_constant_time(int clear)
943 es = ERR_get_state();
950 * Flag error as cleared but remove it elsewhere to avoid two errors
951 * accessing the same error stack location, revealing timing information.
953 clear = constant_time_select_int(constant_time_eq_int(clear, 0),
955 es->err_flags[top] |= clear;