X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Ferr%2Ferr.c;h=eec071236eb1a5e4b27b70a1a799aa9fd19596b8;hp=5e1d5c55b422cf3c86a1ec0063070580982f72c8;hb=8909c2ceeee2c1683f783d905f975bca8626ad33;hpb=302f75887e52bbe0ab7a5806335a0a1264323b07 diff --git a/crypto/err/err.c b/crypto/err/err.c index 5e1d5c55b4..eec071236e 100644 --- a/crypto/err/err.c +++ b/crypto/err/err.c @@ -1,126 +1,27 @@ -/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) - * 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.] - */ -/* ==================================================================== - * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. - * - * 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 above 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 acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" - * - * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to - * endorse or promote products derived from this software without - * prior written permission. For written permission, please contact - * openssl-core@openssl.org. - * - * 5. Products derived from this software may not be called "OpenSSL" - * nor may "OpenSSL" appear in their names without prior written - * permission of the OpenSSL Project. - * - * 6. Redistributions of any form whatsoever must retain the following - * acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit (http://www.openssl.org/)" - * - * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY - * EXPRESSED 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 OpenSSL PROJECT OR - * ITS 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. - * ==================================================================== - * - * This product includes cryptographic software written by Eric Young - * (eay@cryptsoft.com). This product includes software written by Tim - * Hudson (tjh@cryptsoft.com). +/* + * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. * + * Licensed under the OpenSSL license (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 #include #include #include +#include +#include #include +#include #include #include #include -#include #include -#include "err_lcl.h" +#include -static void err_load_strings(int lib, ERR_STRING_DATA *str); +static int err_load_strings(const ERR_STRING_DATA *str); static void ERR_STATE_free(ERR_STATE *s); #ifndef OPENSSL_NO_ERR @@ -152,10 +53,14 @@ static ERR_STRING_DATA ERR_str_libraries[] = { {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_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_KDF, 0, 0), "KDF routines"}, + {ERR_PACK(ERR_LIB_OSSL_STORE, 0, 0), "STORE routines"}, {0, NULL}, }; @@ -179,6 +84,12 @@ static ERR_STRING_DATA ERR_str_functs[] = { {ERR_PACK(0, SYS_F_GETSOCKOPT, 0), "getsockopt"}, {ERR_PACK(0, SYS_F_GETSOCKNAME, 0), "getsockname"}, {ERR_PACK(0, SYS_F_GETHOSTBYNAME, 0), "gethostbyname"}, + {ERR_PACK(0, SYS_F_FFLUSH, 0), "fflush"}, + {ERR_PACK(0, SYS_F_OPEN, 0), "open"}, + {ERR_PACK(0, SYS_F_CLOSE, 0), "close"}, + {ERR_PACK(0, SYS_F_IOCTL, 0), "ioctl"}, + {ERR_PACK(0, SYS_F_STAT, 0), "stat"}, + {ERR_PACK(0, SYS_F_FCNTL, 0), "fcntl"}, {0, NULL}, }; @@ -194,26 +105,16 @@ static ERR_STRING_DATA ERR_str_reasons[] = { {ERR_R_DSA_LIB, "DSA lib"}, {ERR_R_X509_LIB, "X509 lib"}, {ERR_R_ASN1_LIB, "ASN1 lib"}, - {ERR_R_CONF_LIB, "CONF lib"}, - {ERR_R_CRYPTO_LIB, "CRYPTO lib"}, {ERR_R_EC_LIB, "EC lib"}, - {ERR_R_SSL_LIB, "SSL lib"}, {ERR_R_BIO_LIB, "BIO lib"}, {ERR_R_PKCS7_LIB, "PKCS7 lib"}, {ERR_R_X509V3_LIB, "X509V3 lib"}, - {ERR_R_PKCS12_LIB, "PKCS12 lib"}, - {ERR_R_RAND_LIB, "RAND lib"}, - {ERR_R_DSO_LIB, "DSO lib"}, {ERR_R_ENGINE_LIB, "ENGINE lib"}, - {ERR_R_OCSP_LIB, "OCSP lib"}, - {ERR_R_TS_LIB, "TS 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_BAD_ASN1_OBJECT_HEADER, "bad asn1 object header"}, - {ERR_R_BAD_GET_ASN1_OBJECT_CALL, "bad get asn1 object call"}, - {ERR_R_EXPECTING_AN_ASN1_SEQUENCE, "expecting an asn1 sequence"}, - {ERR_R_ASN1_LENGTH_MISMATCH, "asn1 length mismatch"}, {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"}, {ERR_R_FATAL, "fatal"}, @@ -224,26 +125,26 @@ static ERR_STRING_DATA ERR_str_reasons[] = { {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 -/* Predeclarations of the "err_defaults" functions */ -static LHASH_OF(ERR_STRING_DATA) *get_hash(int create, int lockit); +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 *); -static LHASH_OF(ERR_STATE) *int_thread_get(int create, int lockit); -static void int_thread_release(LHASH_OF(ERR_STATE) **hash); -static ERR_STATE *int_thread_get_item(const ERR_STATE *); -static ERR_STATE *int_thread_set_item(ERR_STATE *); -static void int_thread_del_item(const ERR_STATE *); /* * The internal state */ + static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL; -static LHASH_OF(ERR_STATE) *int_thread_hash = NULL; -static int int_thread_hash_references = 0; static int int_err_library_number = ERR_LIB_USER; static unsigned long get_error_values(int inc, int top, const char **file, @@ -262,148 +163,22 @@ static unsigned long err_string_data_hash(const ERR_STRING_DATA *a) static int err_string_data_cmp(const ERR_STRING_DATA *a, const ERR_STRING_DATA *b) { - return (int)(a->error - b->error); -} - -static LHASH_OF(ERR_STRING_DATA) *get_hash(int create, int lockit) -{ - LHASH_OF(ERR_STRING_DATA) *ret = NULL; - - if (lockit) - CRYPTO_w_lock(CRYPTO_LOCK_ERR); - if (!int_error_hash && create) { - int_error_hash = lh_ERR_STRING_DATA_new(err_string_data_hash, - err_string_data_cmp); - } - if (int_error_hash != NULL) - ret = int_error_hash; - if (lockit) - CRYPTO_w_unlock(CRYPTO_LOCK_ERR); - - return ret; + 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; - LHASH_OF(ERR_STRING_DATA) *hash; - - CRYPTO_r_lock(CRYPTO_LOCK_ERR); - hash = get_hash(0, 0); - if (hash) - p = lh_ERR_STRING_DATA_retrieve(hash, d); - CRYPTO_r_unlock(CRYPTO_LOCK_ERR); - - return p; -} - -static unsigned long err_state_hash(const ERR_STATE *a) -{ - return CRYPTO_THREADID_hash(&a->tid) * 13; -} - -static int err_state_cmp(const ERR_STATE *a, const ERR_STATE *b) -{ - return CRYPTO_THREADID_cmp(&a->tid, &b->tid); -} - -static LHASH_OF(ERR_STATE) *int_thread_get(int create, int lockit) -{ - LHASH_OF(ERR_STATE) *ret = NULL; - - if (lockit) - CRYPTO_w_lock(CRYPTO_LOCK_ERR); - if (!int_thread_hash && create) { - int_thread_hash = lh_ERR_STATE_new(err_state_hash, err_state_cmp); - } - if (int_thread_hash != NULL) { - int_thread_hash_references++; - ret = int_thread_hash; - } - if (lockit) - CRYPTO_w_unlock(CRYPTO_LOCK_ERR); - return ret; -} - -static void int_thread_release(LHASH_OF(ERR_STATE) **hash) -{ - int i; - - if (hash == NULL || *hash == NULL) - return; - - i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); - -#ifdef REF_PRINT - fprintf(stderr, "%4d:%s\n", int_thread_hash_references, "ERR"); -#endif - if (i > 0) - return; -#ifdef REF_CHECK - if (i < 0) { - fprintf(stderr, "int_thread_release, bad reference count\n"); - abort(); /* ok */ - } -#endif - *hash = NULL; -} - -static ERR_STATE *int_thread_get_item(const ERR_STATE *d) -{ - ERR_STATE *p = NULL; - LHASH_OF(ERR_STATE) *hash; - - CRYPTO_r_lock(CRYPTO_LOCK_ERR); - hash = int_thread_get(0, 0); - if (hash) - p = lh_ERR_STATE_retrieve(hash, d); - CRYPTO_r_unlock(CRYPTO_LOCK_ERR); - - int_thread_release(&hash); - return p; -} - -static ERR_STATE *int_thread_set_item(ERR_STATE *d) -{ - ERR_STATE *p = NULL; - LHASH_OF(ERR_STATE) *hash; - CRYPTO_w_lock(CRYPTO_LOCK_ERR); - hash = int_thread_get(1, 0); - if (hash) - p = lh_ERR_STATE_insert(hash, d); - CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + CRYPTO_THREAD_read_lock(err_string_lock); + p = lh_ERR_STRING_DATA_retrieve(int_error_hash, d); + CRYPTO_THREAD_unlock(err_string_lock); - int_thread_release(&hash); return p; } -static void int_thread_del_item(const ERR_STATE *d) -{ - ERR_STATE *p = NULL; - LHASH_OF(ERR_STATE) *hash; - - CRYPTO_w_lock(CRYPTO_LOCK_ERR); - hash = int_thread_get(0, 0); - if (hash) { - p = lh_ERR_STATE_delete(hash, d); - /* If there are no other references, and we just removed the - * last item, delete the int_thread_hash */ - if (int_thread_hash_references == 1 - && int_thread_hash - && lh_ERR_STATE_num_items(int_thread_hash) == 0) { - int_thread_hash_references = 0; - lh_ERR_STATE_free(int_thread_hash); - int_thread_hash = NULL; - hash = NULL; - } - } - CRYPTO_w_unlock(CRYPTO_LOCK_ERR); - - int_thread_release(&hash); - ERR_STATE_free(p); -} - #ifndef OPENSSL_NO_ERR # define NUM_SYS_STR_REASONS 127 # define LEN_SYS_STR_REASON 32 @@ -426,31 +201,20 @@ static void build_SYS_str_reasons(void) static int init = 1; int i; - CRYPTO_r_lock(CRYPTO_LOCK_ERR); + CRYPTO_THREAD_write_lock(err_string_lock); if (!init) { - CRYPTO_r_unlock(CRYPTO_LOCK_ERR); - return; - } - - CRYPTO_r_unlock(CRYPTO_LOCK_ERR); - CRYPTO_w_lock(CRYPTO_LOCK_ERR); - if (!init) { - CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + 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 = (unsigned long)i; + str->error = ERR_PACK(ERR_LIB_SYS, 0, i); if (str->string == NULL) { char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]); - char *src = strerror(i); - if (src != NULL) { - strncpy(*dest, src, sizeof(*dest)); - (*dest)[sizeof(*dest) - 1] = '\0'; + if (openssl_strerror_r(i, *dest, sizeof(*dest))) str->string = *dest; - } } if (str->string == NULL) str->string = "unknown"; @@ -463,7 +227,8 @@ static void build_SYS_str_reasons(void) init = 0; - CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + CRYPTO_THREAD_unlock(err_string_lock); + err_load_strings(SYS_str_reasons); } #endif @@ -499,61 +264,103 @@ static void ERR_STATE_free(ERR_STATE *s) OPENSSL_free(s); } -void ERR_load_ERR_strings(void) +DEFINE_RUN_ONCE_STATIC(do_err_strings_init) +{ + OPENSSL_init_crypto(0, NULL); + err_string_lock = CRYPTO_THREAD_lock_new(); + int_error_hash = lh_ERR_STRING_DATA_new(err_string_data_hash, + err_string_data_cmp); + return err_string_lock != NULL && int_error_hash != NULL; +} + +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 - err_load_strings(0, ERR_str_libraries); - err_load_strings(0, ERR_str_reasons); - err_load_strings(ERR_LIB_SYS, ERR_str_functs); + if (!RUN_ONCE(&err_string_init, do_err_strings_init)) + return 0; + + err_load_strings(ERR_str_libraries); + err_load_strings(ERR_str_reasons); + err_patch(ERR_LIB_SYS, ERR_str_functs); + err_load_strings(ERR_str_functs); build_SYS_str_reasons(); - err_load_strings(ERR_LIB_SYS, SYS_str_reasons); #endif + return 1; } -static void err_load_strings(int lib, ERR_STRING_DATA *str) +int ERR_load_strings(int lib, ERR_STRING_DATA *str) { - LHASH_OF(ERR_STRING_DATA) *hash; + if (ERR_load_ERR_strings() == 0) + return 0; - CRYPTO_w_lock(CRYPTO_LOCK_ERR); - hash = get_hash(1, 0); - if (hash) { - for (; str->error; str++) { - if (lib) - str->error |= ERR_PACK(lib, 0, 0); - (void)lh_ERR_STRING_DATA_insert(hash, str); - } - } - CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + err_patch(lib, str); + err_load_strings(str); + return 1; } -void ERR_load_strings(int lib, ERR_STRING_DATA *str) +int ERR_load_strings_const(const ERR_STRING_DATA *str) { - ERR_load_ERR_strings(); - err_load_strings(lib, str); + if (ERR_load_ERR_strings() == 0) + return 0; + err_load_strings(str); + return 1; } -void ERR_unload_strings(int lib, ERR_STRING_DATA *str) +int ERR_unload_strings(int lib, ERR_STRING_DATA *str) { - LHASH_OF(ERR_STRING_DATA) *hash; + if (!RUN_ONCE(&err_string_init, do_err_strings_init)) + return 0; - CRYPTO_w_lock(CRYPTO_LOCK_ERR); - hash = get_hash(0, 0); - if (hash) { - for (; str->error; str++) { - if (lib) - str->error |= ERR_PACK(lib, 0, 0); - (void)lh_ERR_STRING_DATA_delete(hash, str); - } - } - CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + 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(void) +void err_free_strings_int(void) { - CRYPTO_w_lock(CRYPTO_LOCK_ERR); - lh_ERR_STRING_DATA_free(int_error_hash); - int_error_hash = NULL; - CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + if (!RUN_ONCE(&err_string_init, do_err_strings_init)) + return; } /********************************************************/ @@ -582,6 +389,8 @@ void ERR_put_error(int lib, int func, int reason, const char *file, int line) } #endif es = ERR_get_state(); + if (es == NULL) + return; es->top = (es->top + 1) % ERR_NUM_ERRORS; if (es->top == es->bottom) @@ -599,6 +408,8 @@ void ERR_clear_error(void) ERR_STATE *es; es = ERR_get_state(); + if (es == NULL) + return; for (i = 0; i < ERR_NUM_ERRORS; i++) { err_clear(es, i); @@ -663,6 +474,8 @@ static unsigned long get_error_values(int inc, int top, const char **file, unsigned long ret; es = ERR_get_state(); + if (es == NULL) + return 0; if (inc && top) { if (file) @@ -726,6 +539,9 @@ void ERR_error_string_n(unsigned long e, char *buf, size_t len) const char *ls, *fs, *rs; unsigned long l, f, r; + if (len == 0) + return; + l = ERR_GET_LIB(e); f = ERR_GET_FUNC(e); r = ERR_GET_REASON(e); @@ -769,7 +585,6 @@ void ERR_error_string_n(unsigned long e, char *buf, size_t len) } } -/* BAD for multi-threading: uses a local buffer if ret == NULL */ /* * ERR_error_string_n should be used instead for ret != NULL as * ERR_error_string cannot know how large the buffer is @@ -785,26 +600,15 @@ char *ERR_error_string(unsigned long e, char *ret) return ret; } -LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void) -{ - return get_hash(0, 1); -} - -LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void) -{ - return int_thread_get(0, 1); -} - -void ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash) -{ - int_thread_release(hash); -} - 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); @@ -816,6 +620,10 @@ const char *ERR_func_error_string(unsigned long e) ERR_STRING_DATA d, *p; unsigned long l, f; + if (!RUN_ONCE(&err_string_init, do_err_strings_init)) { + return NULL; + } + l = ERR_GET_LIB(e); f = ERR_GET_FUNC(e); d.error = ERR_PACK(l, f, 0); @@ -828,6 +636,10 @@ 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); @@ -839,77 +651,72 @@ const char *ERR_reason_error_string(unsigned long e) return ((p == NULL) ? NULL : p->string); } -void ERR_remove_thread_state(const CRYPTO_THREADID *id) +void err_delete_thread_state(void) { - ERR_STATE tmp; + ERR_STATE *state = CRYPTO_THREAD_get_local(&err_thread_local); + if (state == NULL) + return; - if (id) - CRYPTO_THREADID_cpy(&tmp.tid, id); - else - CRYPTO_THREADID_current(&tmp.tid); - /* - * thread_del_item automatically destroys the LHASH if the number of - * items reaches zero. - */ - int_thread_del_item(&tmp); + CRYPTO_THREAD_set_local(&err_thread_local, NULL); + ERR_STATE_free(state); +} + +#if OPENSSL_API_COMPAT < 0x10100000L +void ERR_remove_thread_state(void *dummy) +{ } +#endif #if OPENSSL_API_COMPAT < 0x10000000L void ERR_remove_state(unsigned long pid) { - ERR_remove_thread_state(NULL); } #endif +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) { - static ERR_STATE fallback; - ERR_STATE *ret, tmp, *tmpp = NULL; - int i; - CRYPTO_THREADID tid; - - CRYPTO_THREADID_current(&tid); - CRYPTO_THREADID_cpy(&tmp.tid, &tid); - ret = int_thread_get_item(&tmp); - - /* ret == the error state, if NULL, make a new one */ - if (ret == NULL) { - ret = OPENSSL_malloc(sizeof(*ret)); - if (ret == NULL) - return (&fallback); - CRYPTO_THREADID_cpy(&ret->tid, &tid); - ret->top = 0; - ret->bottom = 0; - for (i = 0; i < ERR_NUM_ERRORS; i++) { - ret->err_data[i] = NULL; - ret->err_data_flags[i] = 0; - } - tmpp = int_thread_set_item(ret); - /* To check if insertion failed, do a get. */ - if (int_thread_get_item(ret) != ret) { - ERR_STATE_free(ret); /* could not insert it */ - return (&fallback); + ERR_STATE *state = NULL; + + if (!RUN_ONCE(&err_init, err_do_init)) + return NULL; + + state = CRYPTO_THREAD_get_local(&err_thread_local); + + if (state == NULL) { + state = OPENSSL_zalloc(sizeof(*state)); + if (state == NULL) + return NULL; + + if (!ossl_init_thread_start(OPENSSL_INIT_THREAD_ERR_STATE) + || !CRYPTO_THREAD_set_local(&err_thread_local, state)) { + ERR_STATE_free(state); + return NULL; } - /* - * If a race occurred in this function and we came second, tmpp is - * the first one that we just replaced. - */ - ERR_STATE_free(tmpp); /* Ignore failures from these */ OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL); - ossl_init_thread_start(OPENSSL_INIT_THREAD_ERR_STATE); } - return ret; + + return state; } int ERR_get_next_error_library(void) { int ret; - CRYPTO_w_lock(CRYPTO_LOCK_ERR); + 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_w_unlock(CRYPTO_LOCK_ERR); + CRYPTO_THREAD_unlock(err_string_lock); return ret; } @@ -919,10 +726,10 @@ void ERR_set_error_data(char *data, int flags) int i; es = ERR_get_state(); + if (es == NULL) + return; i = es->top; - if (i == 0) - i = ERR_NUM_ERRORS - 1; err_clear_data(es, i); es->err_data[i] = data; @@ -951,20 +758,19 @@ void ERR_add_error_vdata(int num, va_list args) n = 0; for (i = 0; i < num; i++) { a = va_arg(args, char *); - /* ignore NULLs, thanks to Bob Beck */ - if (a != NULL) { - n += strlen(a); - if (n > s) { - s = n + 20; - p = OPENSSL_realloc(str, s + 1); - if (p == NULL) { - OPENSSL_free(str); - return; - } - str = p; + if (a == NULL) + a = ""; + n += strlen(a); + if (n > s) { + s = n + 20; + p = OPENSSL_realloc(str, s + 1); + if (p == NULL) { + OPENSSL_free(str); + return; } - OPENSSL_strlcat(str, a, (size_t)s + 1); + str = p; } + OPENSSL_strlcat(str, a, (size_t)s + 1); } ERR_set_error_data(str, ERR_TXT_MALLOCED | ERR_TXT_STRING); } @@ -974,6 +780,8 @@ int ERR_set_mark(void) ERR_STATE *es; es = ERR_get_state(); + if (es == NULL) + return 0; if (es->bottom == es->top) return 0; @@ -986,13 +794,13 @@ 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); - es->top -= 1; - if (es->top == -1) - es->top = ERR_NUM_ERRORS - 1; + es->top = es->top > 0 ? es->top - 1 : ERR_NUM_ERRORS - 1; } if (es->bottom == es->top) @@ -1000,3 +808,24 @@ int ERR_pop_to_mark(void) 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; +}