2 * Copyright 1995-2016 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/lhash.h>
17 #include <openssl/err.h>
18 #include <openssl/crypto.h>
19 #include <openssl/buffer.h>
20 #include <openssl/bio.h>
21 #include <openssl/opensslconf.h>
22 #include <internal/thread_once.h>
24 static int err_load_strings(const ERR_STRING_DATA *str);
26 static void ERR_STATE_free(ERR_STATE *s);
27 #ifndef OPENSSL_NO_ERR
28 static ERR_STRING_DATA ERR_str_libraries[] = {
29 {ERR_PACK(ERR_LIB_NONE, 0, 0), "unknown library"},
30 {ERR_PACK(ERR_LIB_SYS, 0, 0), "system library"},
31 {ERR_PACK(ERR_LIB_BN, 0, 0), "bignum routines"},
32 {ERR_PACK(ERR_LIB_RSA, 0, 0), "rsa routines"},
33 {ERR_PACK(ERR_LIB_DH, 0, 0), "Diffie-Hellman routines"},
34 {ERR_PACK(ERR_LIB_EVP, 0, 0), "digital envelope routines"},
35 {ERR_PACK(ERR_LIB_BUF, 0, 0), "memory buffer routines"},
36 {ERR_PACK(ERR_LIB_OBJ, 0, 0), "object identifier routines"},
37 {ERR_PACK(ERR_LIB_PEM, 0, 0), "PEM routines"},
38 {ERR_PACK(ERR_LIB_DSA, 0, 0), "dsa routines"},
39 {ERR_PACK(ERR_LIB_X509, 0, 0), "x509 certificate routines"},
40 {ERR_PACK(ERR_LIB_ASN1, 0, 0), "asn1 encoding routines"},
41 {ERR_PACK(ERR_LIB_CONF, 0, 0), "configuration file routines"},
42 {ERR_PACK(ERR_LIB_CRYPTO, 0, 0), "common libcrypto routines"},
43 {ERR_PACK(ERR_LIB_EC, 0, 0), "elliptic curve routines"},
44 {ERR_PACK(ERR_LIB_ECDSA, 0, 0), "ECDSA routines"},
45 {ERR_PACK(ERR_LIB_ECDH, 0, 0), "ECDH routines"},
46 {ERR_PACK(ERR_LIB_SSL, 0, 0), "SSL routines"},
47 {ERR_PACK(ERR_LIB_BIO, 0, 0), "BIO routines"},
48 {ERR_PACK(ERR_LIB_PKCS7, 0, 0), "PKCS7 routines"},
49 {ERR_PACK(ERR_LIB_X509V3, 0, 0), "X509 V3 routines"},
50 {ERR_PACK(ERR_LIB_PKCS12, 0, 0), "PKCS12 routines"},
51 {ERR_PACK(ERR_LIB_RAND, 0, 0), "random number generator"},
52 {ERR_PACK(ERR_LIB_DSO, 0, 0), "DSO support routines"},
53 {ERR_PACK(ERR_LIB_TS, 0, 0), "time stamp routines"},
54 {ERR_PACK(ERR_LIB_ENGINE, 0, 0), "engine routines"},
55 {ERR_PACK(ERR_LIB_OCSP, 0, 0), "OCSP routines"},
56 {ERR_PACK(ERR_LIB_UI, 0, 0), "UI routines"},
57 {ERR_PACK(ERR_LIB_FIPS, 0, 0), "FIPS routines"},
58 {ERR_PACK(ERR_LIB_CMS, 0, 0), "CMS routines"},
59 {ERR_PACK(ERR_LIB_HMAC, 0, 0), "HMAC routines"},
60 {ERR_PACK(ERR_LIB_CT, 0, 0), "CT routines"},
61 {ERR_PACK(ERR_LIB_ASYNC, 0, 0), "ASYNC routines"},
62 {ERR_PACK(ERR_LIB_KDF, 0, 0), "KDF routines"},
66 static ERR_STRING_DATA ERR_str_functs[] = {
67 {ERR_PACK(0, SYS_F_FOPEN, 0), "fopen"},
68 {ERR_PACK(0, SYS_F_CONNECT, 0), "connect"},
69 {ERR_PACK(0, SYS_F_GETSERVBYNAME, 0), "getservbyname"},
70 {ERR_PACK(0, SYS_F_SOCKET, 0), "socket"},
71 {ERR_PACK(0, SYS_F_IOCTLSOCKET, 0), "ioctlsocket"},
72 {ERR_PACK(0, SYS_F_BIND, 0), "bind"},
73 {ERR_PACK(0, SYS_F_LISTEN, 0), "listen"},
74 {ERR_PACK(0, SYS_F_ACCEPT, 0), "accept"},
75 # ifdef OPENSSL_SYS_WINDOWS
76 {ERR_PACK(0, SYS_F_WSASTARTUP, 0), "WSAstartup"},
78 {ERR_PACK(0, SYS_F_OPENDIR, 0), "opendir"},
79 {ERR_PACK(0, SYS_F_FREAD, 0), "fread"},
80 {ERR_PACK(0, SYS_F_GETADDRINFO, 0), "getaddrinfo"},
81 {ERR_PACK(0, SYS_F_GETNAMEINFO, 0), "getnameinfo"},
82 {ERR_PACK(0, SYS_F_SETSOCKOPT, 0), "setsockopt"},
83 {ERR_PACK(0, SYS_F_GETSOCKOPT, 0), "getsockopt"},
84 {ERR_PACK(0, SYS_F_GETSOCKNAME, 0), "getsockname"},
85 {ERR_PACK(0, SYS_F_GETHOSTBYNAME, 0), "gethostbyname"},
86 {ERR_PACK(0, SYS_F_FFLUSH, 0), "fflush"},
87 {ERR_PACK(0, SYS_F_OPEN, 0), "open"},
88 {ERR_PACK(0, SYS_F_CLOSE, 0), "close"},
89 {ERR_PACK(0, SYS_F_IOCTL, 0), "ioctl"},
93 static ERR_STRING_DATA ERR_str_reasons[] = {
94 {ERR_R_SYS_LIB, "system lib"},
95 {ERR_R_BN_LIB, "BN lib"},
96 {ERR_R_RSA_LIB, "RSA lib"},
97 {ERR_R_DH_LIB, "DH lib"},
98 {ERR_R_EVP_LIB, "EVP lib"},
99 {ERR_R_BUF_LIB, "BUF lib"},
100 {ERR_R_OBJ_LIB, "OBJ lib"},
101 {ERR_R_PEM_LIB, "PEM lib"},
102 {ERR_R_DSA_LIB, "DSA lib"},
103 {ERR_R_X509_LIB, "X509 lib"},
104 {ERR_R_ASN1_LIB, "ASN1 lib"},
105 {ERR_R_EC_LIB, "EC lib"},
106 {ERR_R_BIO_LIB, "BIO lib"},
107 {ERR_R_PKCS7_LIB, "PKCS7 lib"},
108 {ERR_R_X509V3_LIB, "X509V3 lib"},
109 {ERR_R_ENGINE_LIB, "ENGINE lib"},
110 {ERR_R_ECDSA_LIB, "ECDSA lib"},
112 {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"},
113 {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"},
115 {ERR_R_FATAL, "fatal"},
116 {ERR_R_MALLOC_FAILURE, "malloc failure"},
117 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED,
118 "called a function you should not call"},
119 {ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"},
120 {ERR_R_INTERNAL_ERROR, "internal error"},
121 {ERR_R_DISABLED, "called a function that was disabled at compile-time"},
122 {ERR_R_INIT_FAIL, "init fail"},
123 {ERR_R_OPERATION_FAIL, "operation fail"},
129 static CRYPTO_ONCE err_init = CRYPTO_ONCE_STATIC_INIT;
130 static int set_err_thread_local;
131 static CRYPTO_THREAD_LOCAL err_thread_local;
133 static CRYPTO_ONCE err_string_init = CRYPTO_ONCE_STATIC_INIT;
134 static CRYPTO_RWLOCK *err_string_lock;
136 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
142 static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL;
143 static int int_err_library_number = ERR_LIB_USER;
145 static unsigned long get_error_values(int inc, int top, const char **file,
146 int *line, const char **data,
149 static unsigned long err_string_data_hash(const ERR_STRING_DATA *a)
151 unsigned long ret, l;
154 ret = l ^ ERR_GET_LIB(l) ^ ERR_GET_FUNC(l);
155 return (ret ^ ret % 19 * 13);
158 static int err_string_data_cmp(const ERR_STRING_DATA *a,
159 const ERR_STRING_DATA *b)
161 return (int)(a->error - b->error);
164 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d)
166 ERR_STRING_DATA *p = NULL;
168 CRYPTO_THREAD_read_lock(err_string_lock);
169 p = lh_ERR_STRING_DATA_retrieve(int_error_hash, d);
170 CRYPTO_THREAD_unlock(err_string_lock);
175 #ifndef OPENSSL_NO_ERR
176 # define NUM_SYS_STR_REASONS 127
177 # define LEN_SYS_STR_REASON 32
179 static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
181 * SYS_str_reasons is filled with copies of strerror() results at
182 * initialization. 'errno' values up to 127 should cover all usual errors,
183 * others will be displayed numerically by ERR_error_string. It is crucial
184 * that we have something for each reason code that occurs in
185 * ERR_str_reasons, or bogus reason strings will be returned for SYSerr(),
186 * which always gets an errno value and never one of those 'standard' reason
190 static void build_SYS_str_reasons(void)
192 /* OPENSSL_malloc cannot be used here, use static storage instead */
193 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON];
197 CRYPTO_THREAD_write_lock(err_string_lock);
199 CRYPTO_THREAD_unlock(err_string_lock);
203 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) {
204 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
206 str->error = ERR_PACK(ERR_LIB_SYS, 0, i);
207 if (str->string == NULL) {
208 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]);
209 if (openssl_strerror_r(i, *dest, sizeof(*dest)))
212 if (str->string == NULL)
213 str->string = "unknown";
217 * Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, as
218 * required by ERR_load_strings.
223 CRYPTO_THREAD_unlock(err_string_lock);
224 err_load_strings(SYS_str_reasons);
228 #define err_clear_data(p,i) \
230 if ((p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
232 OPENSSL_free((p)->err_data[i]); \
233 (p)->err_data[i]=NULL; \
235 (p)->err_data_flags[i]=0; \
238 #define err_clear(p,i) \
240 (p)->err_flags[i]=0; \
241 (p)->err_buffer[i]=0; \
242 err_clear_data(p,i); \
243 (p)->err_file[i]=NULL; \
244 (p)->err_line[i]= -1; \
247 static void ERR_STATE_free(ERR_STATE *s)
254 for (i = 0; i < ERR_NUM_ERRORS; i++) {
255 err_clear_data(s, i);
260 DEFINE_RUN_ONCE_STATIC(do_err_strings_init)
262 OPENSSL_init_crypto(0, NULL);
263 err_string_lock = CRYPTO_THREAD_lock_new();
264 int_error_hash = lh_ERR_STRING_DATA_new(err_string_data_hash,
265 err_string_data_cmp);
266 return err_string_lock != NULL && int_error_hash != NULL;
269 void err_cleanup(void)
271 if (set_err_thread_local != 0)
272 CRYPTO_THREAD_cleanup_local(&err_thread_local);
273 CRYPTO_THREAD_lock_free(err_string_lock);
274 err_string_lock = NULL;
275 lh_ERR_STRING_DATA_free(int_error_hash);
276 int_error_hash = NULL;
280 * Legacy; pack in the library.
282 static void err_patch(int lib, ERR_STRING_DATA *str)
284 unsigned long plib = ERR_PACK(lib, 0, 0);
286 for (; str->error != 0; str++)
291 * Hash in |str| error strings. Assumes the URN_ONCE was done.
293 static int err_load_strings(const ERR_STRING_DATA *str)
295 CRYPTO_THREAD_write_lock(err_string_lock);
296 for (; str->error; str++)
297 (void)lh_ERR_STRING_DATA_insert(int_error_hash,
298 (ERR_STRING_DATA *)str);
299 CRYPTO_THREAD_unlock(err_string_lock);
303 int ERR_load_ERR_strings(void)
305 #ifndef OPENSSL_NO_ERR
306 if (!RUN_ONCE(&err_string_init, do_err_strings_init))
309 err_load_strings(ERR_str_libraries);
310 err_load_strings(ERR_str_reasons);
311 err_patch(ERR_LIB_SYS, ERR_str_functs);
312 err_load_strings(ERR_str_functs);
313 build_SYS_str_reasons();
318 int ERR_load_strings(int lib, ERR_STRING_DATA *str)
320 if (ERR_load_ERR_strings() == 0)
324 err_load_strings(str);
328 int ERR_load_strings_const(const ERR_STRING_DATA *str)
330 if (ERR_load_ERR_strings() == 0)
332 err_load_strings(str);
336 int ERR_unload_strings(int lib, ERR_STRING_DATA *str)
338 if (!RUN_ONCE(&err_string_init, do_err_strings_init))
341 CRYPTO_THREAD_write_lock(err_string_lock);
343 * We don't need to ERR_PACK the lib, since that was done (to
344 * the table) when it was loaded.
346 for (; str->error; str++)
347 (void)lh_ERR_STRING_DATA_delete(int_error_hash, str);
348 CRYPTO_THREAD_unlock(err_string_lock);
353 void err_free_strings_int(void)
355 if (!RUN_ONCE(&err_string_init, do_err_strings_init))
359 /********************************************************/
361 void ERR_put_error(int lib, int func, int reason, const char *file, int line)
367 * In the BS2000-OSD POSIX subsystem, the compiler generates path names
368 * in the form "*POSIX(/etc/passwd)". This dirty hack strips them to
369 * something sensible. @@@ We shouldn't modify a const string, though.
371 if (strncmp(file, "*POSIX(", sizeof("*POSIX(") - 1) == 0) {
374 /* Skip the "*POSIX(" prefix */
375 file += sizeof("*POSIX(") - 1;
376 end = &file[strlen(file) - 1];
379 /* Optional: use the basename of the path only. */
380 if ((end = strrchr(file, '/')) != NULL)
384 es = ERR_get_state();
388 es->top = (es->top + 1) % ERR_NUM_ERRORS;
389 if (es->top == es->bottom)
390 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS;
391 es->err_flags[es->top] = 0;
392 es->err_buffer[es->top] = ERR_PACK(lib, func, reason);
393 es->err_file[es->top] = file;
394 es->err_line[es->top] = line;
395 err_clear_data(es, es->top);
398 void ERR_clear_error(void)
403 es = ERR_get_state();
407 for (i = 0; i < ERR_NUM_ERRORS; i++) {
410 es->top = es->bottom = 0;
413 unsigned long ERR_get_error(void)
415 return (get_error_values(1, 0, NULL, NULL, NULL, NULL));
418 unsigned long ERR_get_error_line(const char **file, int *line)
420 return (get_error_values(1, 0, file, line, NULL, NULL));
423 unsigned long ERR_get_error_line_data(const char **file, int *line,
424 const char **data, int *flags)
426 return (get_error_values(1, 0, file, line, data, flags));
429 unsigned long ERR_peek_error(void)
431 return (get_error_values(0, 0, NULL, NULL, NULL, NULL));
434 unsigned long ERR_peek_error_line(const char **file, int *line)
436 return (get_error_values(0, 0, file, line, NULL, NULL));
439 unsigned long ERR_peek_error_line_data(const char **file, int *line,
440 const char **data, int *flags)
442 return (get_error_values(0, 0, file, line, data, flags));
445 unsigned long ERR_peek_last_error(void)
447 return (get_error_values(0, 1, NULL, NULL, NULL, NULL));
450 unsigned long ERR_peek_last_error_line(const char **file, int *line)
452 return (get_error_values(0, 1, file, line, NULL, NULL));
455 unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
456 const char **data, int *flags)
458 return (get_error_values(0, 1, file, line, data, flags));
461 static unsigned long get_error_values(int inc, int top, const char **file,
462 int *line, const char **data,
469 es = ERR_get_state();
483 return ERR_R_INTERNAL_ERROR;
486 if (es->bottom == es->top)
489 i = es->top; /* last error */
491 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */
493 ret = es->err_buffer[i];
496 es->err_buffer[i] = 0;
499 if ((file != NULL) && (line != NULL)) {
500 if (es->err_file[i] == NULL) {
505 *file = es->err_file[i];
507 *line = es->err_line[i];
513 err_clear_data(es, i);
516 if (es->err_data[i] == NULL) {
521 *data = es->err_data[i];
523 *flags = es->err_data_flags[i];
529 void ERR_error_string_n(unsigned long e, char *buf, size_t len)
531 char lsbuf[64], fsbuf[64], rsbuf[64];
532 const char *ls, *fs, *rs;
533 unsigned long l, f, r;
540 r = ERR_GET_REASON(e);
542 ls = ERR_lib_error_string(e);
543 fs = ERR_func_error_string(e);
544 rs = ERR_reason_error_string(e);
547 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l);
549 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f);
551 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r);
553 BIO_snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls ? ls : lsbuf,
554 fs ? fs : fsbuf, rs ? rs : rsbuf);
555 if (strlen(buf) == len - 1) {
557 * output may be truncated; make sure we always have 5
558 * colon-separated fields, i.e. 4 colons ...
561 if (len > NUM_COLONS) { /* ... if possible */
565 for (i = 0; i < NUM_COLONS; i++) {
566 char *colon = strchr(s, ':');
567 if (colon == NULL || colon > &buf[len - 1] - NUM_COLONS + i) {
569 * set colon no. i at last possible position (buf[len-1]
570 * is the terminating 0)
572 colon = &buf[len - 1] - NUM_COLONS + i;
582 * ERR_error_string_n should be used instead for ret != NULL as
583 * ERR_error_string cannot know how large the buffer is
585 char *ERR_error_string(unsigned long e, char *ret)
587 static char buf[256];
591 ERR_error_string_n(e, ret, 256);
596 const char *ERR_lib_error_string(unsigned long e)
598 ERR_STRING_DATA d, *p;
601 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
606 d.error = ERR_PACK(l, 0, 0);
607 p = int_err_get_item(&d);
608 return ((p == NULL) ? NULL : p->string);
611 const char *ERR_func_error_string(unsigned long e)
613 ERR_STRING_DATA d, *p;
616 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
622 d.error = ERR_PACK(l, f, 0);
623 p = int_err_get_item(&d);
624 return ((p == NULL) ? NULL : p->string);
627 const char *ERR_reason_error_string(unsigned long e)
629 ERR_STRING_DATA d, *p = NULL;
632 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
637 r = ERR_GET_REASON(e);
638 d.error = ERR_PACK(l, 0, r);
639 p = int_err_get_item(&d);
641 d.error = ERR_PACK(0, 0, r);
642 p = int_err_get_item(&d);
644 return ((p == NULL) ? NULL : p->string);
647 void err_delete_thread_state(void)
649 ERR_STATE *state = CRYPTO_THREAD_get_local(&err_thread_local);
653 CRYPTO_THREAD_set_local(&err_thread_local, NULL);
654 ERR_STATE_free(state);
657 #if OPENSSL_API_COMPAT < 0x10100000L
658 void ERR_remove_thread_state(void *dummy)
663 #if OPENSSL_API_COMPAT < 0x10000000L
664 void ERR_remove_state(unsigned long pid)
669 DEFINE_RUN_ONCE_STATIC(err_do_init)
671 set_err_thread_local = 1;
672 return CRYPTO_THREAD_init_local(&err_thread_local, NULL);
675 ERR_STATE *ERR_get_state(void)
677 ERR_STATE *state = NULL;
679 if (!RUN_ONCE(&err_init, err_do_init))
682 state = CRYPTO_THREAD_get_local(&err_thread_local);
685 state = OPENSSL_zalloc(sizeof(*state));
689 if (!ossl_init_thread_start(OPENSSL_INIT_THREAD_ERR_STATE)
690 || !CRYPTO_THREAD_set_local(&err_thread_local, state)) {
691 ERR_STATE_free(state);
695 /* Ignore failures from these */
696 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
702 int ERR_get_next_error_library(void)
706 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
710 CRYPTO_THREAD_write_lock(err_string_lock);
711 ret = int_err_library_number++;
712 CRYPTO_THREAD_unlock(err_string_lock);
716 void ERR_set_error_data(char *data, int flags)
721 es = ERR_get_state();
727 i = ERR_NUM_ERRORS - 1;
729 err_clear_data(es, i);
730 es->err_data[i] = data;
731 es->err_data_flags[i] = flags;
734 void ERR_add_error_data(int num, ...)
738 ERR_add_error_vdata(num, args);
742 void ERR_add_error_vdata(int num, va_list args)
748 str = OPENSSL_malloc(s + 1);
754 for (i = 0; i < num; i++) {
755 a = va_arg(args, char *);
756 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */
761 p = OPENSSL_realloc(str, s + 1);
768 OPENSSL_strlcat(str, a, (size_t)s + 1);
771 ERR_set_error_data(str, ERR_TXT_MALLOCED | ERR_TXT_STRING);
774 int ERR_set_mark(void)
778 es = ERR_get_state();
782 if (es->bottom == es->top)
784 es->err_flags[es->top] |= ERR_FLAG_MARK;
788 int ERR_pop_to_mark(void)
792 es = ERR_get_state();
796 while (es->bottom != es->top
797 && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) {
798 err_clear(es, es->top);
801 es->top = ERR_NUM_ERRORS - 1;
804 if (es->bottom == es->top)
806 es->err_flags[es->top] &= ~ERR_FLAG_MARK;