X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Ferr%2Ferr.c;h=c737b2a9c3e6cccfedb80392829047aa8508904a;hp=d92e41e3e9d58b37ea9954391cce5ea44d0eae02;hb=72a7a7021fa8bc82a11bc08bac1b0241a92143d0;hpb=f672aee49450e03e7b1a26c8701d0be720e9ae0e diff --git a/crypto/err/err.c b/crypto/err/err.c index d92e41e3e9..c737b2a9c3 100644 --- a/crypto/err/err.c +++ b/crypto/err/err.c @@ -1,126 +1,29 @@ -/* 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 1995-2019 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 "internal/cryptlib_int.h" +#include "internal/err.h" +#include "internal/err_int.h" +#include #include #include #include -#include #include -#include "err_lcl.h" +#include "internal/thread_once.h" +#include "internal/ctype.h" +#include "internal/constant_time_locl.h" +#include "e_os.h" -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 +55,15 @@ 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"}, + {ERR_PACK(ERR_LIB_SM2, 0, 0), "SM2 routines"}, {0, NULL}, }; @@ -179,6 +87,13 @@ 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"}, + {ERR_PACK(0, SYS_F_FSTAT, 0), "fstat"}, {0, NULL}, }; @@ -194,26 +109,16 @@ 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"}, @@ -223,26 +128,27 @@ static ERR_STRING_DATA ERR_str_reasons[] = { {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 -/* 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, @@ -261,151 +167,26 @@ 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_THREAD_read_lock(err_string_lock); + p = lh_ERR_STRING_DATA_retrieve(int_error_hash, d); + CRYPTO_THREAD_unlock(err_string_lock); - 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); - - 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 +/* A measurement on Linux 2018-11-21 showed about 3.5kib */ +# define SPACE_SYS_STR_REASONS 4 * 1024 # define NUM_SYS_STR_REASONS 127 -# define LEN_SYS_STR_REASON 32 static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; /* @@ -421,34 +202,43 @@ static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; static void build_SYS_str_reasons(void) { /* OPENSSL_malloc cannot be used here, use static storage instead */ - static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; + 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_r_lock(CRYPTO_LOCK_ERR); - if (!init) { - CRYPTO_r_unlock(CRYPTO_LOCK_ERR); - return; - } - - CRYPTO_r_unlock(CRYPTO_LOCK_ERR); - CRYPTO_w_lock(CRYPTO_LOCK_ERR); + CRYPTO_THREAD_write_lock(err_string_lock); 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'; - str->string = *dest; + if (openssl_strerror_r(i, cur, sizeof(strerror_pool) - cnt)) { + size_t l = strlen(cur); + + str->string = cur; + cnt += l; + if (cnt > sizeof(strerror_pool)) + cnt = sizeof(strerror_pool); + cur += l; + + /* + * VMS has an unusual quirk of adding spaces at the end of + * some (most? all?) messages. Lets trim them off. + */ + while (ossl_isspace(cur[-1])) { + cur--; + cnt--; + } + *cur++ = '\0'; + cnt++; } } if (str->string == NULL) @@ -462,28 +252,30 @@ static void build_SYS_str_reasons(void) init = 0; - CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + 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 -#define err_clear_data(p,i) \ +#define err_clear_data(p, i) \ do { \ - if ((p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ - { \ + if ((p)->err_data_flags[i] & ERR_TXT_MALLOCED) {\ OPENSSL_free((p)->err_data[i]); \ - (p)->err_data[i]=NULL; \ - } \ - (p)->err_data_flags[i]=0; \ - } while(0) + (p)->err_data[i] = NULL; \ + } \ + (p)->err_data_flags[i] = 0; \ + } while (0) -#define err_clear(p,i) \ +#define err_clear(p, i) \ do { \ - (p)->err_flags[i]=0; \ - (p)->err_buffer[i]=0; \ - err_clear_data(p,i); \ - (p)->err_file[i]=NULL; \ - (p)->err_line[i]= -1; \ - } while(0) + err_clear_data(p, i); \ + (p)->err_flags[i] = 0; \ + (p)->err_buffer[i] = 0; \ + (p)->err_file[i] = NULL; \ + (p)->err_line[i] = -1; \ + } while (0) static void ERR_STATE_free(ERR_STATE *s) { @@ -491,68 +283,117 @@ static void ERR_STATE_free(ERR_STATE *s) if (s == NULL) return; - for (i = 0; i < ERR_NUM_ERRORS; i++) { err_clear_data(s, i); } OPENSSL_free(s); } -void ERR_load_ERR_strings(void) +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 - 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; } /********************************************************/ @@ -581,6 +422,8 @@ 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) @@ -598,6 +441,8 @@ 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); @@ -607,50 +452,50 @@ void ERR_clear_error(void) unsigned long ERR_get_error(void) { - return (get_error_values(1, 0, NULL, NULL, NULL, NULL)); + 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)); + 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)); + 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)); + 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)); + 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)); + 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)); + 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)); + 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)); + return get_error_values(0, 1, file, line, data, flags); } static unsigned long get_error_values(int inc, int top, const char **file, @@ -662,6 +507,8 @@ 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) @@ -689,15 +536,13 @@ static unsigned long get_error_values(int inc, int top, const char **file, es->err_buffer[i] = 0; } - if ((file != NULL) && (line != NULL)) { + if (file != NULL && line != NULL) { if (es->err_file[i] == NULL) { *file = "NA"; - if (line != NULL) - *line = 0; + *line = 0; } else { *file = es->err_file[i]; - if (line != NULL) - *line = es->err_line[i]; + *line = es->err_line[i]; } } @@ -725,50 +570,37 @@ void ERR_error_string_n(unsigned long e, char *buf, size_t len) const char *ls, *fs, *rs; unsigned long l, f, r; - l = ERR_GET_LIB(e); - f = ERR_GET_FUNC(e); - r = ERR_GET_REASON(e); + if (len == 0) + return; + l = ERR_GET_LIB(e); ls = ERR_lib_error_string(e); - fs = ERR_func_error_string(e); - rs = ERR_reason_error_string(e); - - if (ls == NULL) + if (ls == NULL) { BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l); - if (fs == NULL) + ls = lsbuf; + } + + fs = ERR_func_error_string(e); + f = ERR_GET_FUNC(e); + if (fs == NULL) { BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f); - if (rs == NULL) + fs = fsbuf; + } + + 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 ? ls : lsbuf, - fs ? fs : fsbuf, rs ? rs : rsbuf); + BIO_snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, fs, rs); if (strlen(buf) == len - 1) { - /* - * output may be truncated; make sure we always have 5 - * colon-separated fields, i.e. 4 colons ... - */ -#define NUM_COLONS 4 - if (len > NUM_COLONS) { /* ... if possible */ - int i; - char *s = buf; - - for (i = 0; i < NUM_COLONS; i++) { - char *colon = strchr(s, ':'); - if (colon == NULL || colon > &buf[len - 1] - NUM_COLONS + i) { - /* - * set colon no. i at last possible position (buf[len-1] - * is the terminating 0) - */ - colon = &buf[len - 1] - NUM_COLONS + i; - *colon = ':'; - } - s = colon + 1; - } - } + /* Didn't fit; use a minimal format. */ + BIO_snprintf(buf, len, "err:%lx:%lx:%lx:%lx", e, l, f, r); } } -/* 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 @@ -779,31 +611,19 @@ char *ERR_error_string(unsigned long e, char *ret) if (ret == NULL) ret = buf; - ERR_error_string_n(e, ret, 256); - + ERR_error_string_n(e, ret, (int)sizeof(buf)); 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); @@ -815,6 +635,10 @@ 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); @@ -827,6 +651,10 @@ 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); @@ -838,93 +666,155 @@ 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; + 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; } - 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); + + if (!ossl_init_thread_start(OPENSSL_INIT_THREAD_ERR_STATE) + || !CRYPTO_THREAD_set_local(&err_thread_local, state)) { + ERR_STATE_free(state); + CRYPTO_THREAD_set_local(&err_thread_local, NULL); + 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); - /* Ignore failures from this */ - ossl_init_thread_start(OPENSSL_INIT_THREAD_ERR_STATE); } - return ret; + + 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; - 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; } -void ERR_set_error_data(char *data, int flags) +static int err_set_error_data_int(char *data, int flags) { ERR_STATE *es; int i; es = ERR_get_state(); + if (es == NULL) + return 0; i = es->top; - if (i == 0) - i = ERR_NUM_ERRORS - 1; err_clear_data(es, i); es->err_data[i] = data; es->err_data_flags[i] = 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. + */ + err_set_error_data_int(data, flags); } void ERR_add_error_data(int num, ...) @@ -941,30 +831,31 @@ void ERR_add_error_vdata(int num, va_list args) char *str, *p, *a; s = 80; - str = OPENSSL_malloc(s + 1); - if (str == NULL) + if ((str = OPENSSL_malloc(s + 1)) == NULL) { + /* ERRerr(ERR_F_ERR_ADD_ERROR_VDATA, ERR_R_MALLOC_FAILURE); */ return; + } str[0] = '\0'; 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); + if (!err_set_error_data_int(str, ERR_TXT_MALLOCED | ERR_TXT_STRING)) + OPENSSL_free(str); } int ERR_set_mark(void) @@ -972,6 +863,8 @@ int ERR_set_mark(void) ERR_STATE *es; es = ERR_get_state(); + if (es == NULL) + return 0; if (es->bottom == es->top) return 0; @@ -984,13 +877,13 @@ 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) @@ -998,3 +891,63 @@ 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; +} + +#ifdef UINTPTR_T +# undef UINTPTR_T +#endif +/* + * uintptr_t is the answer, but unfortunately C89, current "least common + * denominator" doesn't define it. Most legacy platforms typedef it anyway, + * so that attempt to fill the gaps means that one would have to identify + * that track these gaps, which would be undesirable. Macro it is... + */ +#if defined(__VMS) && __INITIAL_POINTER_SIZE==64 +/* + * But we can't use size_t on VMS, because it adheres to sizeof(size_t)==4 + * even in 64-bit builds, which means that it won't work as mask. + */ +# define UINTPTR_T unsigned long long +#else +# define UINTPTR_T size_t +#endif + +void err_clear_last_constant_time(int clear) +{ + ERR_STATE *es; + int top; + + es = ERR_get_state(); + if (es == NULL) + return; + + top = es->top; + + es->err_flags[top] &= ~(0 - clear); + es->err_buffer[top] &= ~(0UL - clear); + es->err_file[top] = (const char *)((UINTPTR_T)es->err_file[top] & + ~((UINTPTR_T)0 - clear)); + es->err_line[top] |= 0 - clear; + + es->top = (top + ERR_NUM_ERRORS - clear) % ERR_NUM_ERRORS; +}