-/* crypto/err/err.c */
-/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
*
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
#include <stdio.h>
-#include "lhash.h"
-#include "crypto.h"
-#include "cryptlib.h"
-#include "buffer.h"
-#include "err.h"
-#include "crypto.h"
-
-
-static LHASH *error_hash=NULL;
-static LHASH *thread_hash=NULL;
-
-#ifndef NOPROTO
-static unsigned long err_hash(ERR_STRING_DATA *a);
-static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b);
-static unsigned long pid_hash(ERR_STATE *pid);
-static int pid_cmp(ERR_STATE *a,ERR_STATE *pid);
-#else
-static unsigned long err_hash();
-static int err_cmp();
-static unsigned long pid_hash();
-static int pid_cmp();
+#include <stdarg.h>
+#include <string.h>
+#include "internal/cryptlib_int.h"
+#include "internal/err.h"
+#include "internal/err_int.h"
+#include <openssl/err.h>
+#include <openssl/crypto.h>
+#include <openssl/buffer.h>
+#include <openssl/bio.h>
+#include <openssl/opensslconf.h>
+#include "internal/thread_once.h"
+#include "internal/ctype.h"
+#include "internal/constant_time_locl.h"
+#include "e_os.h"
+#include "err_locl.h"
+
+static int err_load_strings(const ERR_STRING_DATA *str);
+
+static void ERR_STATE_free(ERR_STATE *s);
+#ifndef OPENSSL_NO_ERR
+static ERR_STRING_DATA ERR_str_libraries[] = {
+ {ERR_PACK(ERR_LIB_NONE, 0, 0), "unknown library"},
+ {ERR_PACK(ERR_LIB_SYS, 0, 0), "system library"},
+ {ERR_PACK(ERR_LIB_BN, 0, 0), "bignum routines"},
+ {ERR_PACK(ERR_LIB_RSA, 0, 0), "rsa routines"},
+ {ERR_PACK(ERR_LIB_DH, 0, 0), "Diffie-Hellman routines"},
+ {ERR_PACK(ERR_LIB_EVP, 0, 0), "digital envelope routines"},
+ {ERR_PACK(ERR_LIB_BUF, 0, 0), "memory buffer routines"},
+ {ERR_PACK(ERR_LIB_OBJ, 0, 0), "object identifier routines"},
+ {ERR_PACK(ERR_LIB_PEM, 0, 0), "PEM routines"},
+ {ERR_PACK(ERR_LIB_DSA, 0, 0), "dsa routines"},
+ {ERR_PACK(ERR_LIB_X509, 0, 0), "x509 certificate routines"},
+ {ERR_PACK(ERR_LIB_ASN1, 0, 0), "asn1 encoding routines"},
+ {ERR_PACK(ERR_LIB_CONF, 0, 0), "configuration file routines"},
+ {ERR_PACK(ERR_LIB_CRYPTO, 0, 0), "common libcrypto routines"},
+ {ERR_PACK(ERR_LIB_EC, 0, 0), "elliptic curve routines"},
+ {ERR_PACK(ERR_LIB_ECDSA, 0, 0), "ECDSA routines"},
+ {ERR_PACK(ERR_LIB_ECDH, 0, 0), "ECDH routines"},
+ {ERR_PACK(ERR_LIB_SSL, 0, 0), "SSL routines"},
+ {ERR_PACK(ERR_LIB_BIO, 0, 0), "BIO routines"},
+ {ERR_PACK(ERR_LIB_PKCS7, 0, 0), "PKCS7 routines"},
+ {ERR_PACK(ERR_LIB_X509V3, 0, 0), "X509 V3 routines"},
+ {ERR_PACK(ERR_LIB_PKCS12, 0, 0), "PKCS12 routines"},
+ {ERR_PACK(ERR_LIB_RAND, 0, 0), "random number generator"},
+ {ERR_PACK(ERR_LIB_DSO, 0, 0), "DSO support routines"},
+ {ERR_PACK(ERR_LIB_TS, 0, 0), "time stamp routines"},
+ {ERR_PACK(ERR_LIB_ENGINE, 0, 0), "engine routines"},
+ {ERR_PACK(ERR_LIB_OCSP, 0, 0), "OCSP routines"},
+ {ERR_PACK(ERR_LIB_UI, 0, 0), "UI routines"},
+ {ERR_PACK(ERR_LIB_FIPS, 0, 0), "FIPS routines"},
+ {ERR_PACK(ERR_LIB_CMS, 0, 0), "CMS routines"},
+ {ERR_PACK(ERR_LIB_CRMF, 0, 0), "CRMF routines"},
+ {ERR_PACK(ERR_LIB_CMP, 0, 0), "CMP routines"},
+ {ERR_PACK(ERR_LIB_HMAC, 0, 0), "HMAC routines"},
+ {ERR_PACK(ERR_LIB_CT, 0, 0), "CT routines"},
+ {ERR_PACK(ERR_LIB_ASYNC, 0, 0), "ASYNC routines"},
+ {ERR_PACK(ERR_LIB_OSSL_STORE, 0, 0), "STORE routines"},
+ {ERR_PACK(ERR_LIB_SM2, 0, 0), "SM2 routines"},
+ {ERR_PACK(ERR_LIB_ESS, 0, 0), "ESS routines"},
+ {ERR_PACK(ERR_LIB_PROV, 0, 0), "Provider routines"},
+ {0, NULL},
+};
+
+static ERR_STRING_DATA ERR_str_reasons[] = {
+ {ERR_R_SYS_LIB, "system lib"},
+ {ERR_R_BN_LIB, "BN lib"},
+ {ERR_R_RSA_LIB, "RSA lib"},
+ {ERR_R_DH_LIB, "DH lib"},
+ {ERR_R_EVP_LIB, "EVP lib"},
+ {ERR_R_BUF_LIB, "BUF lib"},
+ {ERR_R_OBJ_LIB, "OBJ lib"},
+ {ERR_R_PEM_LIB, "PEM lib"},
+ {ERR_R_DSA_LIB, "DSA lib"},
+ {ERR_R_X509_LIB, "X509 lib"},
+ {ERR_R_ASN1_LIB, "ASN1 lib"},
+ {ERR_R_EC_LIB, "EC lib"},
+ {ERR_R_BIO_LIB, "BIO lib"},
+ {ERR_R_PKCS7_LIB, "PKCS7 lib"},
+ {ERR_R_X509V3_LIB, "X509V3 lib"},
+ {ERR_R_ENGINE_LIB, "ENGINE lib"},
+ {ERR_R_UI_LIB, "UI lib"},
+ {ERR_R_OSSL_STORE_LIB, "STORE lib"},
+ {ERR_R_ECDSA_LIB, "ECDSA lib"},
+
+ {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"},
+ {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"},
+
+ {ERR_R_FATAL, "fatal"},
+ {ERR_R_MALLOC_FAILURE, "malloc failure"},
+ {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED,
+ "called a function you should not call"},
+ {ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"},
+ {ERR_R_INTERNAL_ERROR, "internal error"},
+ {ERR_R_DISABLED, "called a function that was disabled at compile-time"},
+ {ERR_R_INIT_FAIL, "init fail"},
+ {ERR_R_OPERATION_FAIL, "operation fail"},
+
+ {0, NULL},
+};
#endif
-#ifndef NO_ERR
-static ERR_STRING_DATA ERR_str_libraries[]=
- {
-{ERR_PACK(ERR_LIB_NONE,0,0) ,"unknown library"},
-{ERR_PACK(ERR_LIB_SYS,0,0) ,"system library"},
-{ERR_PACK(ERR_LIB_BN,0,0) ,"bignum routines"},
-{ERR_PACK(ERR_LIB_RSA,0,0) ,"rsa routines"},
-{ERR_PACK(ERR_LIB_DH,0,0) ,"Diffie-Hellman routines"},
-{ERR_PACK(ERR_LIB_EVP,0,0) ,"digital envelope routines"},
-{ERR_PACK(ERR_LIB_BUF,0,0) ,"memory buffer routines"},
-{ERR_PACK(ERR_LIB_BIO,0,0) ,"BIO routines"},
-{ERR_PACK(ERR_LIB_OBJ,0,0) ,"object identifier routines"},
-{ERR_PACK(ERR_LIB_PEM,0,0) ,"PEM routines"},
-{ERR_PACK(ERR_LIB_ASN1,0,0) ,"asn1 encoding routines"},
-{ERR_PACK(ERR_LIB_X509,0,0) ,"x509 certificate routines"},
-{ERR_PACK(ERR_LIB_CONF,0,0) ,"configuation file routines"},
-{ERR_PACK(ERR_LIB_METH,0,0) ,"X509 lookup 'method' routines"},
-{ERR_PACK(ERR_LIB_SSL,0,0) ,"SSL routines"},
-{ERR_PACK(ERR_LIB_RSAREF,0,0) ,"RSAref routines"},
-{ERR_PACK(ERR_LIB_PROXY,0,0) ,"Proxy routines"},
-{ERR_PACK(ERR_LIB_BIO,0,0) ,"BIO routines"},
-{ERR_PACK(ERR_LIB_PKCS7,0,0) ,"PKCS7 routines"},
-{0,NULL},
- };
-
-static ERR_STRING_DATA ERR_str_functs[]=
- {
- {ERR_PACK(0,SYS_F_FOPEN,0), "fopen"},
- {ERR_PACK(0,SYS_F_CONNECT,0), "connect"},
- {ERR_PACK(0,SYS_F_GETSERVBYNAME,0), "getservbyname"},
- {ERR_PACK(0,SYS_F_SOCKET,0), "socket"},
- {ERR_PACK(0,SYS_F_IOCTLSOCKET,0), "ioctlsocket"},
- {ERR_PACK(0,SYS_F_BIND,0), "bind"},
- {ERR_PACK(0,SYS_F_LISTEN,0), "listen"},
- {ERR_PACK(0,SYS_F_ACCEPT,0), "accept"},
-#ifdef WINDOWS
- {ERR_PACK(0,SYS_F_WSASTARTUP,0), "WSAstartup"},
+static CRYPTO_ONCE err_init = CRYPTO_ONCE_STATIC_INIT;
+static int set_err_thread_local;
+static CRYPTO_THREAD_LOCAL err_thread_local;
+
+static CRYPTO_ONCE err_string_init = CRYPTO_ONCE_STATIC_INIT;
+static CRYPTO_RWLOCK *err_string_lock;
+
+static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
+
+/*
+ * The internal state
+ */
+
+static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL;
+static int int_err_library_number = ERR_LIB_USER;
+
+static unsigned long get_error_values(int inc, int top, const char **file,
+ int *line, const char **data,
+ int *flags);
+
+static unsigned long err_string_data_hash(const ERR_STRING_DATA *a)
+{
+ unsigned long ret, l;
+
+ l = a->error;
+ ret = l ^ ERR_GET_LIB(l);
+ return (ret ^ ret % 19 * 13);
+}
+
+static int err_string_data_cmp(const ERR_STRING_DATA *a,
+ const ERR_STRING_DATA *b)
+{
+ if (a->error == b->error)
+ return 0;
+ return a->error > b->error ? 1 : -1;
+}
+
+static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d)
+{
+ ERR_STRING_DATA *p = NULL;
+
+ CRYPTO_THREAD_read_lock(err_string_lock);
+ p = lh_ERR_STRING_DATA_retrieve(int_error_hash, d);
+ CRYPTO_THREAD_unlock(err_string_lock);
+
+ return p;
+}
+
+#ifndef OPENSSL_NO_ERR
+/* 2019-05-21: Russian and Ukrainian locales on Linux require more than 6,5 kB */
+# define SPACE_SYS_STR_REASONS 8 * 1024
+# define NUM_SYS_STR_REASONS 127
+
+static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
+/*
+ * SYS_str_reasons is filled with copies of strerror() results at
+ * initialization. 'errno' values up to 127 should cover all usual errors,
+ * others will be displayed numerically by ERR_error_string. It is crucial
+ * that we have something for each reason code that occurs in
+ * ERR_str_reasons, or bogus reason strings will be returned for SYSerr(),
+ * which always gets an errno value and never one of those 'standard' reason
+ * codes.
+ */
+
+static void build_SYS_str_reasons(void)
+{
+ /* OPENSSL_malloc cannot be used here, use static storage instead */
+ static char strerror_pool[SPACE_SYS_STR_REASONS];
+ char *cur = strerror_pool;
+ size_t cnt = 0;
+ static int init = 1;
+ int i;
+ int saveerrno = get_last_sys_error();
+
+ CRYPTO_THREAD_write_lock(err_string_lock);
+ if (!init) {
+ CRYPTO_THREAD_unlock(err_string_lock);
+ return;
+ }
+
+ for (i = 1; i <= NUM_SYS_STR_REASONS; i++) {
+ ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
+
+ str->error = ERR_PACK(ERR_LIB_SYS, 0, i);
+ /*
+ * If we have used up all the space in strerror_pool,
+ * there's no point in calling openssl_strerror_r()
+ */
+ if (str->string == NULL && cnt < sizeof(strerror_pool)) {
+ if (openssl_strerror_r(i, cur, sizeof(strerror_pool) - cnt)) {
+ size_t l = strlen(cur);
+
+ str->string = cur;
+ cnt += l;
+ cur += l;
+
+ /*
+ * VMS has an unusual quirk of adding spaces at the end of
+ * some (most? all?) messages. Lets trim them off.
+ */
+ while (cur > strerror_pool && ossl_isspace(cur[-1])) {
+ cur--;
+ cnt--;
+ }
+ *cur++ = '\0';
+ cnt++;
+ }
+ }
+ if (str->string == NULL)
+ str->string = "unknown";
+ }
+
+ /*
+ * Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, as
+ * required by ERR_load_strings.
+ */
+
+ init = 0;
+
+ CRYPTO_THREAD_unlock(err_string_lock);
+ /* openssl_strerror_r could change errno, but we want to preserve it */
+ set_sys_error(saveerrno);
+ err_load_strings(SYS_str_reasons);
+}
+#endif
+
+static void ERR_STATE_free(ERR_STATE *s)
+{
+ int i;
+
+ if (s == NULL)
+ return;
+ for (i = 0; i < ERR_NUM_ERRORS; i++) {
+ err_clear_data(s, i, 1);
+ }
+ OPENSSL_free(s);
+}
+
+DEFINE_RUN_ONCE_STATIC(do_err_strings_init)
+{
+ if (!OPENSSL_init_crypto(0, NULL))
+ return 0;
+ err_string_lock = CRYPTO_THREAD_lock_new();
+ if (err_string_lock == NULL)
+ return 0;
+ int_error_hash = lh_ERR_STRING_DATA_new(err_string_data_hash,
+ err_string_data_cmp);
+ if (int_error_hash == NULL) {
+ CRYPTO_THREAD_lock_free(err_string_lock);
+ err_string_lock = NULL;
+ return 0;
+ }
+ return 1;
+}
+
+void err_cleanup(void)
+{
+ if (set_err_thread_local != 0)
+ CRYPTO_THREAD_cleanup_local(&err_thread_local);
+ CRYPTO_THREAD_lock_free(err_string_lock);
+ err_string_lock = NULL;
+ lh_ERR_STRING_DATA_free(int_error_hash);
+ int_error_hash = NULL;
+}
+
+/*
+ * Legacy; pack in the library.
+ */
+static void err_patch(int lib, ERR_STRING_DATA *str)
+{
+ unsigned long plib = ERR_PACK(lib, 0, 0);
+
+ for (; str->error != 0; str++)
+ str->error |= plib;
+}
+
+/*
+ * Hash in |str| error strings. Assumes the URN_ONCE was done.
+ */
+static int err_load_strings(const ERR_STRING_DATA *str)
+{
+ CRYPTO_THREAD_write_lock(err_string_lock);
+ for (; str->error; str++)
+ (void)lh_ERR_STRING_DATA_insert(int_error_hash,
+ (ERR_STRING_DATA *)str);
+ CRYPTO_THREAD_unlock(err_string_lock);
+ return 1;
+}
+
+int ERR_load_ERR_strings(void)
+{
+#ifndef OPENSSL_NO_ERR
+ if (!RUN_ONCE(&err_string_init, do_err_strings_init))
+ return 0;
+
+ err_load_strings(ERR_str_libraries);
+ err_load_strings(ERR_str_reasons);
+ build_SYS_str_reasons();
#endif
- {0,NULL},
- };
-
-static ERR_STRING_DATA ERR_str_reasons[]=
- {
-{ERR_R_FATAL ,"fatal"},
-{ERR_R_SYS_LIB ,"system lib"},
-{ERR_R_BN_LIB ,"BN lib"},
-{ERR_R_RSA_LIB ,"RSA lib"},
-{ERR_R_DH_LIB ,"DH lib"},
-{ERR_R_EVP_LIB ,"EVP lib"},
-{ERR_R_BUF_LIB ,"BUF lib"},
-{ERR_R_BIO_LIB ,"BIO lib"},
-{ERR_R_OBJ_LIB ,"OBJ lib"},
-{ERR_R_PEM_LIB ,"PEM lib"},
-{ERR_R_X509_LIB ,"X509 lib"},
-{ERR_R_METH_LIB ,"METH lib"},
-{ERR_R_ASN1_LIB ,"ASN1 lib"},
-{ERR_R_CONF_LIB ,"CONF lib"},
-{ERR_R_SSL_LIB ,"SSL lib"},
-{ERR_R_PROXY_LIB ,"PROXY lib"},
-{ERR_R_BIO_LIB ,"BIO lib"},
-{ERR_R_PKCS7_LIB ,"PKCS7 lib"},
-{ERR_R_MALLOC_FAILURE ,"Malloc failure"},
-{ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED ,"called a fuction you should not call"},
-{0,NULL},
- };
+ return 1;
+}
+
+int ERR_load_strings(int lib, ERR_STRING_DATA *str)
+{
+ if (ERR_load_ERR_strings() == 0)
+ return 0;
+
+ err_patch(lib, str);
+ err_load_strings(str);
+ return 1;
+}
+
+int ERR_load_strings_const(const ERR_STRING_DATA *str)
+{
+ if (ERR_load_ERR_strings() == 0)
+ return 0;
+ err_load_strings(str);
+ return 1;
+}
+
+int ERR_unload_strings(int lib, ERR_STRING_DATA *str)
+{
+ if (!RUN_ONCE(&err_string_init, do_err_strings_init))
+ return 0;
+
+ CRYPTO_THREAD_write_lock(err_string_lock);
+ /*
+ * We don't need to ERR_PACK the lib, since that was done (to
+ * the table) when it was loaded.
+ */
+ for (; str->error; str++)
+ (void)lh_ERR_STRING_DATA_delete(int_error_hash, str);
+ CRYPTO_THREAD_unlock(err_string_lock);
+
+ return 1;
+}
+
+void err_free_strings_int(void)
+{
+ if (!RUN_ONCE(&err_string_init, do_err_strings_init))
+ return;
+}
+
+/********************************************************/
+
+void ERR_clear_error(void)
+{
+ int i;
+ ERR_STATE *es;
+
+ es = ERR_get_state();
+ if (es == NULL)
+ return;
+
+ for (i = 0; i < ERR_NUM_ERRORS; i++) {
+ err_clear(es, i, 0);
+ }
+ es->top = es->bottom = 0;
+}
+
+unsigned long ERR_get_error(void)
+{
+ return get_error_values(1, 0, NULL, NULL, NULL, NULL);
+}
+
+unsigned long ERR_get_error_line(const char **file, int *line)
+{
+ return get_error_values(1, 0, file, line, NULL, NULL);
+}
+
+unsigned long ERR_get_error_line_data(const char **file, int *line,
+ const char **data, int *flags)
+{
+ return get_error_values(1, 0, file, line, data, flags);
+}
+
+unsigned long ERR_peek_error(void)
+{
+ return get_error_values(0, 0, NULL, NULL, NULL, NULL);
+}
+
+unsigned long ERR_peek_error_line(const char **file, int *line)
+{
+ return get_error_values(0, 0, file, line, NULL, NULL);
+}
+
+unsigned long ERR_peek_error_line_data(const char **file, int *line,
+ const char **data, int *flags)
+{
+ return get_error_values(0, 0, file, line, data, flags);
+}
+
+unsigned long ERR_peek_last_error(void)
+{
+ return get_error_values(0, 1, NULL, NULL, NULL, NULL);
+}
+
+unsigned long ERR_peek_last_error_line(const char **file, int *line)
+{
+ return get_error_values(0, 1, file, line, NULL, NULL);
+}
+
+unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
+ const char **data, int *flags)
+{
+ return get_error_values(0, 1, file, line, data, flags);
+}
+
+static unsigned long get_error_values(int inc, int top, const char **file,
+ int *line, const char **data,
+ int *flags)
+{
+ int i = 0;
+ ERR_STATE *es;
+ unsigned long ret;
+
+ es = ERR_get_state();
+ if (es == NULL)
+ return 0;
+
+ if (inc && top) {
+ if (file)
+ *file = "";
+ if (line)
+ *line = 0;
+ if (data)
+ *data = "";
+ if (flags)
+ *flags = 0;
+
+ return ERR_R_INTERNAL_ERROR;
+ }
+
+ while (es->bottom != es->top) {
+ if (es->err_flags[es->top] & ERR_FLAG_CLEAR) {
+ err_clear(es, es->top, 0);
+ es->top = es->top > 0 ? es->top - 1 : ERR_NUM_ERRORS - 1;
+ continue;
+ }
+ i = (es->bottom + 1) % ERR_NUM_ERRORS;
+ if (es->err_flags[i] & ERR_FLAG_CLEAR) {
+ es->bottom = i;
+ err_clear(es, es->bottom, 0);
+ continue;
+ }
+ break;
+ }
+
+ if (es->bottom == es->top)
+ return 0;
+
+ if (top)
+ i = es->top; /* last error */
+ else
+ i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */
+
+ ret = es->err_buffer[i];
+ if (inc) {
+ es->bottom = i;
+ es->err_buffer[i] = 0;
+ }
+
+ if (file != NULL && line != NULL) {
+ if (es->err_file[i] == NULL) {
+ *file = "NA";
+ *line = 0;
+ } else {
+ *file = es->err_file[i];
+ *line = es->err_line[i];
+ }
+ }
+
+ if (data == NULL) {
+ if (inc) {
+ err_clear_data(es, i, 0);
+ }
+ } else {
+ if (es->err_data[i] == NULL) {
+ *data = "";
+ if (flags != NULL)
+ *flags = 0;
+ } else {
+ *data = es->err_data[i];
+ if (flags != NULL)
+ *flags = es->err_data_flags[i];
+ }
+ }
+ return ret;
+}
+
+void ERR_error_string_n(unsigned long e, char *buf, size_t len)
+{
+ char lsbuf[64], rsbuf[64];
+ const char *ls, *rs;
+ unsigned long f = 0, l, r;
+
+ if (len == 0)
+ return;
+
+ l = ERR_GET_LIB(e);
+ ls = ERR_lib_error_string(e);
+ if (ls == NULL) {
+ BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l);
+ ls = lsbuf;
+ }
+
+ rs = ERR_reason_error_string(e);
+ r = ERR_GET_REASON(e);
+ if (rs == NULL) {
+ BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r);
+ rs = rsbuf;
+ }
+
+ BIO_snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, "", rs);
+ if (strlen(buf) == len - 1) {
+ /* Didn't fit; use a minimal format. */
+ BIO_snprintf(buf, len, "err:%lx:%lx:%lx:%lx", e, l, f, r);
+ }
+}
+
+/*
+ * ERR_error_string_n should be used instead for ret != NULL as
+ * ERR_error_string cannot know how large the buffer is
+ */
+char *ERR_error_string(unsigned long e, char *ret)
+{
+ static char buf[256];
+
+ if (ret == NULL)
+ ret = buf;
+ ERR_error_string_n(e, ret, (int)sizeof(buf));
+ return ret;
+}
+
+const char *ERR_lib_error_string(unsigned long e)
+{
+ ERR_STRING_DATA d, *p;
+ unsigned long l;
+
+ if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
+ return NULL;
+ }
+
+ l = ERR_GET_LIB(e);
+ d.error = ERR_PACK(l, 0, 0);
+ p = int_err_get_item(&d);
+ return ((p == NULL) ? NULL : p->string);
+}
+
+const char *ERR_func_error_string(unsigned long e)
+{
+ if (!RUN_ONCE(&err_string_init, do_err_strings_init))
+ return NULL;
+ return ERR_GET_LIB(e) == ERR_LIB_SYS ? "system library" : NULL;
+}
+
+const char *ERR_reason_error_string(unsigned long e)
+{
+ ERR_STRING_DATA d, *p = NULL;
+ unsigned long l, r;
+
+ if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
+ return NULL;
+ }
+
+ l = ERR_GET_LIB(e);
+ r = ERR_GET_REASON(e);
+ d.error = ERR_PACK(l, 0, r);
+ p = int_err_get_item(&d);
+ if (!p) {
+ d.error = ERR_PACK(0, 0, r);
+ p = int_err_get_item(&d);
+ }
+ return ((p == NULL) ? NULL : p->string);
+}
+
+/* TODO(3.0): arg ignored for now */
+static void err_delete_thread_state(void *arg)
+{
+ ERR_STATE *state = CRYPTO_THREAD_get_local(&err_thread_local);
+ if (state == NULL)
+ return;
+
+ CRYPTO_THREAD_set_local(&err_thread_local, NULL);
+ ERR_STATE_free(state);
+}
+
+#if !OPENSSL_API_1_1_0
+void ERR_remove_thread_state(void *dummy)
+{
+}
#endif
-void ERR_load_ERR_strings()
- {
- static int init=1;
-
- if (init)
- {
- CRYPTO_w_lock(CRYPTO_LOCK_ERR);
- if (init == 0)
- {
- CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
- return;
- }
- init=0;
- CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
-
-#ifndef NO_ERR
- ERR_load_strings(0,ERR_str_libraries);
- ERR_load_strings(0,ERR_str_reasons);
- ERR_load_strings(ERR_LIB_SYS,ERR_str_functs);
+#if !OPENSSL_API_1_0_0
+void ERR_remove_state(unsigned long pid)
+{
+}
#endif
- }
- }
-
-void ERR_load_strings(lib,str)
-int lib;
-ERR_STRING_DATA *str;
- {
- if (error_hash == NULL)
- {
- CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH);
- error_hash=lh_new(err_hash,err_cmp);
- if (error_hash == NULL)
- {
- CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);
- return;
- }
- CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);
-
- ERR_load_ERR_strings();
- }
-
- CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH);
- while (str->error)
- {
- str->error|=ERR_PACK(lib,0,0);
- lh_insert(error_hash,(char *)str);
- str++;
- }
- CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);
- }
-
-void ERR_free_strings()
- {
- CRYPTO_w_lock(CRYPTO_LOCK_ERR);
-
- if (error_hash != NULL)
- {
- lh_free(error_hash);
- error_hash=NULL;
- }
-
- CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
- }
-
-void ERR_put_error(lib,func,reason,file,line)
-int lib,func,reason;
-char *file;
-int line;
- {
- ERR_STATE *es;
-
- es=ERR_get_state();
-
- es->top=(es->top+1)%ERR_NUM_ERRORS;
- if (es->top == es->bottom)
- es->bottom=(es->bottom+1)%ERR_NUM_ERRORS;
- es->err_buffer[es->top]=ERR_PACK(lib,func,reason);
- es->err_file[es->top]=file;
- es->err_line[es->top]=line;
- }
-
-void ERR_clear_error()
- {
- int i;
- ERR_STATE *es;
-
- es=ERR_get_state();
-
- for (i=0; i<ERR_NUM_ERRORS; i++)
- {
- es->err_buffer[i]=0;
- es->err_file[i]=NULL;
- es->err_line[i]= -1;
- }
- es->top=es->bottom=0;
- }
-
-unsigned long ERR_peek_error()
- {
- int i;
- ERR_STATE *es;
-
- /* should be fine since only one thread should ever be playing
- * with the value returned from this call */
- es=ERR_get_state();
-
- if (es->bottom == es->top) return(0);
- i=(es->bottom+1)%ERR_NUM_ERRORS;
-
-
- return(es->err_buffer[i]);
- }
-
-unsigned long ERR_get_error()
- {
- int i;
- unsigned long ret;
- ERR_STATE *es;
-
- es=ERR_get_state();
-
- if (es->bottom == es->top) return(0);
- i=(es->bottom+1)%ERR_NUM_ERRORS;
- es->bottom=i;
- ret=es->err_buffer[i];
- es->err_buffer[i]=0;
-
-
- return(ret);
- }
-
-unsigned long ERR_peek_error_line(file,line)
-char **file;
-int *line;
- {
- int i=0;
- ERR_STATE *es;
-
- es=ERR_get_state();
-
- if (es->bottom == es->top)
- {
- return(0);
- }
-
- i=(es->bottom+1)%ERR_NUM_ERRORS;
- if (es->err_file[i] == NULL)
- {
- *file="NA";
- *line=0;
- }
- else
- {
- *file=es->err_file[i];
- *line=es->err_line[i];
- }
-
- return(es->err_buffer[i]);
- }
-
-unsigned long ERR_get_error_line(file,line)
-char **file;
-int *line;
- {
- int i;
- unsigned long ret;
- ERR_STATE *es;
-
- es=ERR_get_state();
-
- if (es->bottom == es->top)
- return(0);
-
- i=(es->bottom+1)%ERR_NUM_ERRORS;
- es->bottom=i;
- ret= es->err_buffer[i];
- if (es->err_file[i] == NULL)
- {
- *file="NA";
- *line=0;
- }
- else
- {
- *file=es->err_file[i];
- *line=es->err_line[i];
- }
- es->err_buffer[i]=0;
- es->err_file[i]=NULL;
- es->err_line[i]= -1;
-
- return(ret);
- }
-
-/* BAD for multi-threaded, uses a local buffer if ret == NULL */
-char *ERR_error_string(e,ret)
-unsigned long e;
-char *ret;
- {
- static char buf[256];
- char *ls,*fs,*rs;
- unsigned long l,f,r;
- int i;
-
- l=ERR_GET_LIB(e);
- f=ERR_GET_FUNC(e);
- r=ERR_GET_REASON(e);
-
- ls=ERR_lib_error_string(e);
- fs=ERR_func_error_string(e);
- rs=ERR_reason_error_string(e);
-
- if (ret == NULL) ret=buf;
-
- sprintf(&(ret[0]),"error:%08lX:",e);
- i=strlen(ret);
- if (ls == NULL)
- sprintf(&(ret[i]),":lib(%lu) ",l);
- else sprintf(&(ret[i]),"%s",ls);
- i=strlen(ret);
- if (fs == NULL)
- sprintf(&(ret[i]),":func(%lu) ",f);
- else sprintf(&(ret[i]),":%s",fs);
- i=strlen(ret);
- if (rs == NULL)
- sprintf(&(ret[i]),":reason(%lu)",r);
- else sprintf(&(ret[i]),":%s",rs);
-
- return(ret);
- }
-
-LHASH *ERR_get_string_table()
- {
- return(error_hash);
- }
-
-LHASH *ERR_get_err_state_table()
- {
- return(thread_hash);
- }
-
-char *ERR_lib_error_string(e)
-unsigned long e;
- {
- ERR_STRING_DATA d,*p=NULL;
- unsigned long l;
-
- l=ERR_GET_LIB(e);
-
- CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH);
-
- if (error_hash != NULL)
- {
- d.error=ERR_PACK(l,0,0);
- p=(ERR_STRING_DATA *)lh_retrieve(error_hash,(char *)&d);
- }
-
- CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH);
-
- return((p == NULL)?NULL:p->string);
- }
-
-char *ERR_func_error_string(e)
-unsigned long e;
- {
- ERR_STRING_DATA d,*p=NULL;
- unsigned long l,f;
-
- l=ERR_GET_LIB(e);
- f=ERR_GET_FUNC(e);
-
- CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH);
-
- if (error_hash != NULL)
- {
- d.error=ERR_PACK(l,f,0);
- p=(ERR_STRING_DATA *)lh_retrieve(error_hash,(char *)&d);
- }
-
- CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH);
-
- return((p == NULL)?NULL:p->string);
- }
-
-char *ERR_reason_error_string(e)
-unsigned long e;
- {
- ERR_STRING_DATA d,*p=NULL;
- unsigned long l,r;
-
- l=ERR_GET_LIB(e);
- r=ERR_GET_REASON(e);
-
- CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH);
-
- if (error_hash != NULL)
- {
- d.error=ERR_PACK(l,0,r);
- p=(ERR_STRING_DATA *)lh_retrieve(error_hash,(char *)&d);
- if (p == NULL)
- {
- d.error=ERR_PACK(0,0,r);
- p=(ERR_STRING_DATA *)lh_retrieve(error_hash,
- (char *)&d);
- }
- }
-
- CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH);
-
- return((p == NULL)?NULL:p->string);
- }
-
-static unsigned long err_hash(a)
-ERR_STRING_DATA *a;
- {
- unsigned long ret,l;
-
- l=a->error;
- ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l);
- return(ret^ret%19*13);
- }
-
-static int err_cmp(a,b)
-ERR_STRING_DATA *a,*b;
- {
- return((int)(a->error-b->error));
- }
-
-static unsigned long pid_hash(a)
-ERR_STATE *a;
- {
- return(a->pid*13);
- }
-
-static int pid_cmp(a,b)
-ERR_STATE *a,*b;
- {
- return((int)((long)a->pid - (long)b->pid));
- }
-
-void ERR_remove_state(pid)
-unsigned long pid;
- {
- ERR_STATE *p,tmp;
-
- if (thread_hash == NULL)
- return;
- if (pid == 0)
- pid=(unsigned long)CRYPTO_thread_id();
- tmp.pid=pid;
- CRYPTO_w_lock(CRYPTO_LOCK_ERR);
- p=(ERR_STATE *)lh_delete(thread_hash,(char *)&tmp);
- if (p != NULL) Free(p);
- CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
- }
-
-ERR_STATE *ERR_get_state()
- {
- static ERR_STATE fallback;
- ERR_STATE *ret=NULL,tmp,*tmpp;
- unsigned long pid;
-
- pid=(unsigned long)CRYPTO_thread_id();
-
- CRYPTO_r_lock(CRYPTO_LOCK_ERR);
- if (thread_hash == NULL)
- {
- CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
- CRYPTO_w_lock(CRYPTO_LOCK_ERR);
- if (thread_hash == NULL)
- {
- thread_hash=lh_new(pid_hash,pid_cmp);
- CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
- if (thread_hash == NULL) return(&fallback);
- }
- else
- CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
- }
- else
- {
- tmp.pid=pid;
- ret=(ERR_STATE *)lh_retrieve(thread_hash,(char *)&tmp);
- CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
- }
-
- /* ret == the error state, if NULL, make a new one */
- if (ret == NULL)
- {
- ret=(ERR_STATE *)Malloc(sizeof(ERR_STATE));
- if (ret == NULL) return(&fallback);
- ret->pid=pid;
- ret->top=0;
- ret->bottom=0;
- CRYPTO_w_lock(CRYPTO_LOCK_ERR);
- tmpp=(ERR_STATE *)lh_insert(thread_hash,(char *)ret);
- CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
- if (tmpp != NULL) /* old entry - should not happen */
- Free(tmpp);
- }
- return(ret);
- }
+DEFINE_RUN_ONCE_STATIC(err_do_init)
+{
+ set_err_thread_local = 1;
+ return CRYPTO_THREAD_init_local(&err_thread_local, NULL);
+}
+
+ERR_STATE *ERR_get_state(void)
+{
+ ERR_STATE *state;
+ int saveerrno = get_last_sys_error();
+
+ if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL))
+ return NULL;
+
+ if (!RUN_ONCE(&err_init, err_do_init))
+ return NULL;
+
+ state = CRYPTO_THREAD_get_local(&err_thread_local);
+ if (state == (ERR_STATE*)-1)
+ return NULL;
+
+ if (state == NULL) {
+ if (!CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)-1))
+ return NULL;
+
+ if ((state = OPENSSL_zalloc(sizeof(*state))) == NULL) {
+ CRYPTO_THREAD_set_local(&err_thread_local, NULL);
+ return NULL;
+ }
+
+ if (!ossl_init_thread_start(NULL, NULL, err_delete_thread_state)
+ || !CRYPTO_THREAD_set_local(&err_thread_local, state)) {
+ ERR_STATE_free(state);
+ CRYPTO_THREAD_set_local(&err_thread_local, NULL);
+ return NULL;
+ }
+
+ /* Ignore failures from these */
+ OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
+ }
+
+ set_sys_error(saveerrno);
+ return state;
+}
+
+/*
+ * err_shelve_state returns the current thread local error state
+ * and freezes the error module until err_unshelve_state is called.
+ */
+int err_shelve_state(void **state)
+{
+ int saveerrno = get_last_sys_error();
+
+ /*
+ * Note, at present our only caller is OPENSSL_init_crypto(), indirectly
+ * via ossl_init_load_crypto_nodelete(), by which point the requested
+ * "base" initialization has already been performed, so the below call is a
+ * NOOP, that re-enters OPENSSL_init_crypto() only to quickly return.
+ *
+ * If are no other valid callers of this function, the call below can be
+ * removed, avoiding the re-entry into OPENSSL_init_crypto(). If there are
+ * potential uses that are not from inside OPENSSL_init_crypto(), then this
+ * call is needed, but some care is required to make sure that the re-entry
+ * remains a NOOP.
+ */
+ if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL))
+ return 0;
+
+ if (!RUN_ONCE(&err_init, err_do_init))
+ return 0;
+
+ *state = CRYPTO_THREAD_get_local(&err_thread_local);
+ if (!CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)-1))
+ return 0;
+
+ set_sys_error(saveerrno);
+ return 1;
+}
+
+/*
+ * err_unshelve_state restores the error state that was returned
+ * by err_shelve_state previously.
+ */
+void err_unshelve_state(void* state)
+{
+ if (state != (void*)-1)
+ CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)state);
+}
+
+int ERR_get_next_error_library(void)
+{
+ int ret;
+
+ if (!RUN_ONCE(&err_string_init, do_err_strings_init))
+ return 0;
+
+ CRYPTO_THREAD_write_lock(err_string_lock);
+ ret = int_err_library_number++;
+ CRYPTO_THREAD_unlock(err_string_lock);
+ return ret;
+}
+
+static int err_set_error_data_int(char *data, size_t size, int flags,
+ int deallocate)
+{
+ ERR_STATE *es;
+
+ es = ERR_get_state();
+ if (es == NULL)
+ return 0;
+
+ err_clear_data(es, es->top, deallocate);
+ err_set_data(es, es->top, data, size, flags);
+
+ return 1;
+}
+
+void ERR_set_error_data(char *data, int flags)
+{
+ /*
+ * This function is void so we cannot propagate the error return. Since it
+ * is also in the public API we can't change the return type.
+ *
+ * We estimate the size of the data. If it's not flagged as allocated,
+ * then this is safe, and if it is flagged as allocated, then our size
+ * may be smaller than the actual allocation, but that doesn't matter
+ * too much, the buffer will remain untouched or will eventually be
+ * reallocated to a new size.
+ *
+ * callers should be advised that this function takes over ownership of
+ * the allocated memory, i.e. they can't count on the pointer to remain
+ * valid.
+ */
+ err_set_error_data_int(data, strlen(data) + 1, flags, 1);
+}
+
+void ERR_add_error_data(int num, ...)
+{
+ va_list args;
+ va_start(args, num);
+ ERR_add_error_vdata(num, args);
+ va_end(args);
+}
+
+void ERR_add_error_vdata(int num, va_list args)
+{
+ int i, len, size;
+ int flags = ERR_TXT_MALLOCED | ERR_TXT_STRING;
+ char *str, *arg;
+ ERR_STATE *es;
+
+ /* Get the current error data; if an allocated string get it. */
+ es = ERR_get_state();
+ if (es == NULL)
+ return;
+ i = es->top;
+
+ /*
+ * If err_data is allocated already, re-use the space.
+ * Otherwise, allocate a small new buffer.
+ */
+ if ((es->err_data_flags[i] & flags) == flags) {
+ str = es->err_data[i];
+ size = es->err_data_size[i];
+
+ /*
+ * To protect the string we just grabbed from tampering by other
+ * functions we may call, or to protect them from freeing a pointer
+ * that may no longer be valid at that point, we clear away the
+ * data pointer and the flags. We will set them again at the end
+ * of this function.
+ */
+ es->err_data[i] = NULL;
+ es->err_data_flags[i] = 0;
+ } else if ((str = OPENSSL_malloc(size = 81)) == NULL) {
+ return;
+ } else {
+ str[0] = '\0';
+ }
+ len = strlen(str);
+
+ while (--num >= 0) {
+ arg = va_arg(args, char *);
+ if (arg == NULL)
+ arg = "<NULL>";
+ len += strlen(arg);
+ if (len >= size) {
+ char *p;
+
+ size = len + 20;
+ p = OPENSSL_realloc(str, size);
+ if (p == NULL) {
+ OPENSSL_free(str);
+ return;
+ }
+ str = p;
+ }
+ OPENSSL_strlcat(str, arg, (size_t)size);
+ }
+ if (!err_set_error_data_int(str, size, flags, 0))
+ OPENSSL_free(str);
+}
+
+int ERR_set_mark(void)
+{
+ ERR_STATE *es;
+
+ es = ERR_get_state();
+ if (es == NULL)
+ return 0;
+
+ if (es->bottom == es->top)
+ return 0;
+ es->err_flags[es->top] |= ERR_FLAG_MARK;
+ return 1;
+}
+
+int ERR_pop_to_mark(void)
+{
+ ERR_STATE *es;
+
+ es = ERR_get_state();
+ if (es == NULL)
+ return 0;
+
+ while (es->bottom != es->top
+ && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) {
+ err_clear(es, es->top, 0);
+ es->top = es->top > 0 ? es->top - 1 : ERR_NUM_ERRORS - 1;
+ }
+
+ if (es->bottom == es->top)
+ return 0;
+ es->err_flags[es->top] &= ~ERR_FLAG_MARK;
+ return 1;
+}
+
+int ERR_clear_last_mark(void)
+{
+ ERR_STATE *es;
+ int top;
+
+ es = ERR_get_state();
+ if (es == NULL)
+ return 0;
+
+ top = es->top;
+ while (es->bottom != top
+ && (es->err_flags[top] & ERR_FLAG_MARK) == 0) {
+ top = top > 0 ? top - 1 : ERR_NUM_ERRORS - 1;
+ }
+
+ if (es->bottom == top)
+ return 0;
+ es->err_flags[top] &= ~ERR_FLAG_MARK;
+ return 1;
+}
+
+void err_clear_last_constant_time(int clear)
+{
+ ERR_STATE *es;
+ int top;
+
+ es = ERR_get_state();
+ if (es == NULL)
+ return;
+
+ top = es->top;
+
+ /*
+ * Flag error as cleared but remove it elsewhere to avoid two errors
+ * accessing the same error stack location, revealing timing information.
+ */
+ clear = constant_time_select_int(constant_time_eq_int(clear, 0),
+ 0, ERR_FLAG_CLEAR);
+ es->err_flags[top] |= clear;
+}
projects / openssl.git / blobdiff