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"},
90 static ERR_STRING_DATA ERR_str_reasons[] = {
91 {ERR_R_SYS_LIB, "system lib"},
92 {ERR_R_BN_LIB, "BN lib"},
93 {ERR_R_RSA_LIB, "RSA lib"},
94 {ERR_R_DH_LIB, "DH lib"},
95 {ERR_R_EVP_LIB, "EVP lib"},
96 {ERR_R_BUF_LIB, "BUF lib"},
97 {ERR_R_OBJ_LIB, "OBJ lib"},
98 {ERR_R_PEM_LIB, "PEM lib"},
99 {ERR_R_DSA_LIB, "DSA lib"},
100 {ERR_R_X509_LIB, "X509 lib"},
101 {ERR_R_ASN1_LIB, "ASN1 lib"},
102 {ERR_R_EC_LIB, "EC lib"},
103 {ERR_R_BIO_LIB, "BIO lib"},
104 {ERR_R_PKCS7_LIB, "PKCS7 lib"},
105 {ERR_R_X509V3_LIB, "X509V3 lib"},
106 {ERR_R_ENGINE_LIB, "ENGINE lib"},
107 {ERR_R_ECDSA_LIB, "ECDSA lib"},
109 {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"},
110 {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"},
112 {ERR_R_FATAL, "fatal"},
113 {ERR_R_MALLOC_FAILURE, "malloc failure"},
114 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED,
115 "called a function you should not call"},
116 {ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"},
117 {ERR_R_INTERNAL_ERROR, "internal error"},
118 {ERR_R_DISABLED, "called a function that was disabled at compile-time"},
119 {ERR_R_INIT_FAIL, "init fail"},
120 {ERR_R_OPERATION_FAIL, "operation fail"},
126 static CRYPTO_ONCE err_init = CRYPTO_ONCE_STATIC_INIT;
127 static int set_err_thread_local;
128 static CRYPTO_THREAD_LOCAL err_thread_local;
130 static CRYPTO_ONCE err_string_init = CRYPTO_ONCE_STATIC_INIT;
131 static CRYPTO_RWLOCK *err_string_lock;
133 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
139 static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL;
140 static int int_err_library_number = ERR_LIB_USER;
142 static unsigned long get_error_values(int inc, int top, const char **file,
143 int *line, const char **data,
146 static unsigned long err_string_data_hash(const ERR_STRING_DATA *a)
148 unsigned long ret, l;
151 ret = l ^ ERR_GET_LIB(l) ^ ERR_GET_FUNC(l);
152 return (ret ^ ret % 19 * 13);
155 static int err_string_data_cmp(const ERR_STRING_DATA *a,
156 const ERR_STRING_DATA *b)
158 return (int)(a->error - b->error);
161 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d)
163 ERR_STRING_DATA *p = NULL;
165 CRYPTO_THREAD_read_lock(err_string_lock);
166 p = lh_ERR_STRING_DATA_retrieve(int_error_hash, d);
167 CRYPTO_THREAD_unlock(err_string_lock);
172 #ifndef OPENSSL_NO_ERR
173 # define NUM_SYS_STR_REASONS 127
174 # define LEN_SYS_STR_REASON 32
176 static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
178 * SYS_str_reasons is filled with copies of strerror() results at
179 * initialization. 'errno' values up to 127 should cover all usual errors,
180 * others will be displayed numerically by ERR_error_string. It is crucial
181 * that we have something for each reason code that occurs in
182 * ERR_str_reasons, or bogus reason strings will be returned for SYSerr(),
183 * which always gets an errno value and never one of those 'standard' reason
187 static void build_SYS_str_reasons(void)
189 /* OPENSSL_malloc cannot be used here, use static storage instead */
190 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON];
194 CRYPTO_THREAD_write_lock(err_string_lock);
196 CRYPTO_THREAD_unlock(err_string_lock);
200 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) {
201 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
203 str->error = ERR_PACK(ERR_LIB_SYS, 0, i);
204 if (str->string == NULL) {
205 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]);
206 if (openssl_strerror_r(i, *dest, sizeof(*dest)))
209 if (str->string == NULL)
210 str->string = "unknown";
214 * Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, as
215 * required by ERR_load_strings.
220 CRYPTO_THREAD_unlock(err_string_lock);
221 err_load_strings(SYS_str_reasons);
225 #define err_clear_data(p,i) \
227 if ((p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
229 OPENSSL_free((p)->err_data[i]); \
230 (p)->err_data[i]=NULL; \
232 (p)->err_data_flags[i]=0; \
235 #define err_clear(p,i) \
237 (p)->err_flags[i]=0; \
238 (p)->err_buffer[i]=0; \
239 err_clear_data(p,i); \
240 (p)->err_file[i]=NULL; \
241 (p)->err_line[i]= -1; \
244 static void ERR_STATE_free(ERR_STATE *s)
251 for (i = 0; i < ERR_NUM_ERRORS; i++) {
252 err_clear_data(s, i);
257 DEFINE_RUN_ONCE_STATIC(do_err_strings_init)
259 OPENSSL_init_crypto(0, NULL);
260 err_string_lock = CRYPTO_THREAD_lock_new();
261 int_error_hash = lh_ERR_STRING_DATA_new(err_string_data_hash,
262 err_string_data_cmp);
263 return err_string_lock != NULL && int_error_hash != NULL;
266 void err_cleanup(void)
268 if (set_err_thread_local != 0)
269 CRYPTO_THREAD_cleanup_local(&err_thread_local);
270 CRYPTO_THREAD_lock_free(err_string_lock);
271 err_string_lock = NULL;
272 lh_ERR_STRING_DATA_free(int_error_hash);
273 int_error_hash = NULL;
277 * Legacy; pack in the library.
279 static void err_patch(int lib, ERR_STRING_DATA *str)
281 unsigned long plib = ERR_PACK(lib, 0, 0);
283 for (; str->error != 0; str++)
288 * Hash in |str| error strings. Assumes the URN_ONCE was done.
290 static int err_load_strings(const ERR_STRING_DATA *str)
292 CRYPTO_THREAD_write_lock(err_string_lock);
293 for (; str->error; str++)
294 (void)lh_ERR_STRING_DATA_insert(int_error_hash,
295 (ERR_STRING_DATA *)str);
296 CRYPTO_THREAD_unlock(err_string_lock);
300 int ERR_load_ERR_strings(void)
302 #ifndef OPENSSL_NO_ERR
303 if (!RUN_ONCE(&err_string_init, do_err_strings_init))
306 err_load_strings(ERR_str_libraries);
307 err_load_strings(ERR_str_reasons);
308 err_patch(ERR_LIB_SYS, ERR_str_functs);
309 err_load_strings(ERR_str_functs);
310 build_SYS_str_reasons();
315 int ERR_load_strings(int lib, ERR_STRING_DATA *str)
317 if (ERR_load_ERR_strings() == 0)
321 err_load_strings(str);
325 int ERR_load_strings_const(const ERR_STRING_DATA *str)
327 if (ERR_load_ERR_strings() == 0)
329 err_load_strings(str);
333 int ERR_unload_strings(int lib, ERR_STRING_DATA *str)
335 if (!RUN_ONCE(&err_string_init, do_err_strings_init))
338 CRYPTO_THREAD_write_lock(err_string_lock);
340 * We don't need to ERR_PACK the lib, since that was done (to
341 * the table) when it was loaded.
343 for (; str->error; str++)
344 (void)lh_ERR_STRING_DATA_delete(int_error_hash, str);
345 CRYPTO_THREAD_unlock(err_string_lock);
350 void err_free_strings_int(void)
352 if (!RUN_ONCE(&err_string_init, do_err_strings_init))
356 /********************************************************/
358 void ERR_put_error(int lib, int func, int reason, const char *file, int line)
364 * In the BS2000-OSD POSIX subsystem, the compiler generates path names
365 * in the form "*POSIX(/etc/passwd)". This dirty hack strips them to
366 * something sensible. @@@ We shouldn't modify a const string, though.
368 if (strncmp(file, "*POSIX(", sizeof("*POSIX(") - 1) == 0) {
371 /* Skip the "*POSIX(" prefix */
372 file += sizeof("*POSIX(") - 1;
373 end = &file[strlen(file) - 1];
376 /* Optional: use the basename of the path only. */
377 if ((end = strrchr(file, '/')) != NULL)
381 es = ERR_get_state();
385 es->top = (es->top + 1) % ERR_NUM_ERRORS;
386 if (es->top == es->bottom)
387 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS;
388 es->err_flags[es->top] = 0;
389 es->err_buffer[es->top] = ERR_PACK(lib, func, reason);
390 es->err_file[es->top] = file;
391 es->err_line[es->top] = line;
392 err_clear_data(es, es->top);
395 void ERR_clear_error(void)
400 es = ERR_get_state();
404 for (i = 0; i < ERR_NUM_ERRORS; i++) {
407 es->top = es->bottom = 0;
410 unsigned long ERR_get_error(void)
412 return (get_error_values(1, 0, NULL, NULL, NULL, NULL));
415 unsigned long ERR_get_error_line(const char **file, int *line)
417 return (get_error_values(1, 0, file, line, NULL, NULL));
420 unsigned long ERR_get_error_line_data(const char **file, int *line,
421 const char **data, int *flags)
423 return (get_error_values(1, 0, file, line, data, flags));
426 unsigned long ERR_peek_error(void)
428 return (get_error_values(0, 0, NULL, NULL, NULL, NULL));
431 unsigned long ERR_peek_error_line(const char **file, int *line)
433 return (get_error_values(0, 0, file, line, NULL, NULL));
436 unsigned long ERR_peek_error_line_data(const char **file, int *line,
437 const char **data, int *flags)
439 return (get_error_values(0, 0, file, line, data, flags));
442 unsigned long ERR_peek_last_error(void)
444 return (get_error_values(0, 1, NULL, NULL, NULL, NULL));
447 unsigned long ERR_peek_last_error_line(const char **file, int *line)
449 return (get_error_values(0, 1, file, line, NULL, NULL));
452 unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
453 const char **data, int *flags)
455 return (get_error_values(0, 1, file, line, data, flags));
458 static unsigned long get_error_values(int inc, int top, const char **file,
459 int *line, const char **data,
466 es = ERR_get_state();
480 return ERR_R_INTERNAL_ERROR;
483 if (es->bottom == es->top)
486 i = es->top; /* last error */
488 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */
490 ret = es->err_buffer[i];
493 es->err_buffer[i] = 0;
496 if ((file != NULL) && (line != NULL)) {
497 if (es->err_file[i] == NULL) {
502 *file = es->err_file[i];
504 *line = es->err_line[i];
510 err_clear_data(es, i);
513 if (es->err_data[i] == NULL) {
518 *data = es->err_data[i];
520 *flags = es->err_data_flags[i];
526 void ERR_error_string_n(unsigned long e, char *buf, size_t len)
528 char lsbuf[64], fsbuf[64], rsbuf[64];
529 const char *ls, *fs, *rs;
530 unsigned long l, f, r;
537 r = ERR_GET_REASON(e);
539 ls = ERR_lib_error_string(e);
540 fs = ERR_func_error_string(e);
541 rs = ERR_reason_error_string(e);
544 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l);
546 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f);
548 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r);
550 BIO_snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls ? ls : lsbuf,
551 fs ? fs : fsbuf, rs ? rs : rsbuf);
552 if (strlen(buf) == len - 1) {
554 * output may be truncated; make sure we always have 5
555 * colon-separated fields, i.e. 4 colons ...
558 if (len > NUM_COLONS) { /* ... if possible */
562 for (i = 0; i < NUM_COLONS; i++) {
563 char *colon = strchr(s, ':');
564 if (colon == NULL || colon > &buf[len - 1] - NUM_COLONS + i) {
566 * set colon no. i at last possible position (buf[len-1]
567 * is the terminating 0)
569 colon = &buf[len - 1] - NUM_COLONS + i;
579 * ERR_error_string_n should be used instead for ret != NULL as
580 * ERR_error_string cannot know how large the buffer is
582 char *ERR_error_string(unsigned long e, char *ret)
584 static char buf[256];
588 ERR_error_string_n(e, ret, 256);
593 const char *ERR_lib_error_string(unsigned long e)
595 ERR_STRING_DATA d, *p;
598 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
603 d.error = ERR_PACK(l, 0, 0);
604 p = int_err_get_item(&d);
605 return ((p == NULL) ? NULL : p->string);
608 const char *ERR_func_error_string(unsigned long e)
610 ERR_STRING_DATA d, *p;
613 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
619 d.error = ERR_PACK(l, f, 0);
620 p = int_err_get_item(&d);
621 return ((p == NULL) ? NULL : p->string);
624 const char *ERR_reason_error_string(unsigned long e)
626 ERR_STRING_DATA d, *p = NULL;
629 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
634 r = ERR_GET_REASON(e);
635 d.error = ERR_PACK(l, 0, r);
636 p = int_err_get_item(&d);
638 d.error = ERR_PACK(0, 0, r);
639 p = int_err_get_item(&d);
641 return ((p == NULL) ? NULL : p->string);
644 void err_delete_thread_state(void)
646 ERR_STATE *state = CRYPTO_THREAD_get_local(&err_thread_local);
650 CRYPTO_THREAD_set_local(&err_thread_local, NULL);
651 ERR_STATE_free(state);
654 #if OPENSSL_API_COMPAT < 0x10100000L
655 void ERR_remove_thread_state(void *dummy)
660 #if OPENSSL_API_COMPAT < 0x10000000L
661 void ERR_remove_state(unsigned long pid)
666 DEFINE_RUN_ONCE_STATIC(err_do_init)
668 set_err_thread_local = 1;
669 return CRYPTO_THREAD_init_local(&err_thread_local, NULL);
672 ERR_STATE *ERR_get_state(void)
674 ERR_STATE *state = NULL;
676 if (!RUN_ONCE(&err_init, err_do_init))
679 state = CRYPTO_THREAD_get_local(&err_thread_local);
682 state = OPENSSL_zalloc(sizeof(*state));
686 if (!ossl_init_thread_start(OPENSSL_INIT_THREAD_ERR_STATE)
687 || !CRYPTO_THREAD_set_local(&err_thread_local, state)) {
688 ERR_STATE_free(state);
692 /* Ignore failures from these */
693 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
699 int ERR_get_next_error_library(void)
703 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
707 CRYPTO_THREAD_write_lock(err_string_lock);
708 ret = int_err_library_number++;
709 CRYPTO_THREAD_unlock(err_string_lock);
713 void ERR_set_error_data(char *data, int flags)
718 es = ERR_get_state();
724 i = ERR_NUM_ERRORS - 1;
726 err_clear_data(es, i);
727 es->err_data[i] = data;
728 es->err_data_flags[i] = flags;
731 void ERR_add_error_data(int num, ...)
735 ERR_add_error_vdata(num, args);
739 void ERR_add_error_vdata(int num, va_list args)
745 str = OPENSSL_malloc(s + 1);
751 for (i = 0; i < num; i++) {
752 a = va_arg(args, char *);
753 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */
758 p = OPENSSL_realloc(str, s + 1);
765 OPENSSL_strlcat(str, a, (size_t)s + 1);
768 ERR_set_error_data(str, ERR_TXT_MALLOCED | ERR_TXT_STRING);
771 int ERR_set_mark(void)
775 es = ERR_get_state();
779 if (es->bottom == es->top)
781 es->err_flags[es->top] |= ERR_FLAG_MARK;
785 int ERR_pop_to_mark(void)
789 es = ERR_get_state();
793 while (es->bottom != es->top
794 && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) {
795 err_clear(es, es->top);
798 es->top = ERR_NUM_ERRORS - 1;
801 if (es->bottom == es->top)
803 es->err_flags[es->top] &= ~ERR_FLAG_MARK;