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boringssl/crypto/err/err.c
David Benjamin a353cdb671 Wrap MSVC-only warning pragmas in a macro. 
There's a __pragma expression which allows this. Android builds us Windows with
MinGW for some reason, so we actually do have to tolerate non-MSVC-compatible
Windows compilers. (Clang for Windows is much more sensible than MinGW and
intentionally mimicks MSVC.)

MinGW doesn't understand MSVC's pragmas and warns a lot. #pragma warning is
safe to suppress, so wrap those to shush them. This also lets us do away with a
few ifdefs.

Change-Id: I1f5a8bec4940d4b2d947c4c1cc9341bc15ec4972
Reviewed-on: https://boringssl-review.googlesource.com/8236
Reviewed-by: Adam Langley <agl@google.com>
2016-06-09 21:29:36 +00:00

757 lines
23 KiB
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/* 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). */
#include <openssl/err.h>
#include <assert.h>
#include <errno.h>
#include <inttypes.h>
#include <string.h>
#if defined(OPENSSL_WINDOWS)
OPENSSL_MSVC_PRAGMA(warning(push, 3))
#include <windows.h>
OPENSSL_MSVC_PRAGMA(warning(pop))
#endif
#include <openssl/mem.h>
#include <openssl/thread.h>
#include "../internal.h"
extern const uint32_t kOpenSSLReasonValues[];
extern const size_t kOpenSSLReasonValuesLen;
extern const char kOpenSSLReasonStringData[];
/* err_clear_data frees the optional |data| member of the given error. */
static void err_clear_data(struct err_error_st *error) {
if ((error->flags & ERR_FLAG_MALLOCED) != 0) {
OPENSSL_free(error->data);
}
error->data = NULL;
error->flags &= ~ERR_FLAG_MALLOCED;
}
/* err_clear clears the given queued error. */
static void err_clear(struct err_error_st *error) {
err_clear_data(error);
memset(error, 0, sizeof(struct err_error_st));
}
/* global_next_library contains the next custom library value to return. */
static int global_next_library = ERR_NUM_LIBS;
/* global_next_library_mutex protects |global_next_library| from concurrent
* updates. */
static struct CRYPTO_STATIC_MUTEX global_next_library_mutex =
CRYPTO_STATIC_MUTEX_INIT;
static void err_state_free(void *statep) {
ERR_STATE *state = statep;
if (state == NULL) {
return;
}
unsigned i;
for (i = 0; i < ERR_NUM_ERRORS; i++) {
err_clear(&state->errors[i]);
}
OPENSSL_free(state->to_free);
OPENSSL_free(state);
}
/* err_get_state gets the ERR_STATE object for the current thread. */
static ERR_STATE *err_get_state(void) {
ERR_STATE *state = CRYPTO_get_thread_local(OPENSSL_THREAD_LOCAL_ERR);
if (state == NULL) {
state = OPENSSL_malloc(sizeof(ERR_STATE));
if (state == NULL) {
return NULL;
}
memset(state, 0, sizeof(ERR_STATE));
if (!CRYPTO_set_thread_local(OPENSSL_THREAD_LOCAL_ERR, state,
err_state_free)) {
return NULL;
}
}
return state;
}
static uint32_t get_error_values(int inc, int top, const char **file, int *line,
const char **data, int *flags) {
unsigned i = 0;
ERR_STATE *state;
struct err_error_st *error;
uint32_t ret;
state = err_get_state();
if (state == NULL || state->bottom == state->top) {
return 0;
}
if (top) {
assert(!inc);
/* last error */
i = state->top;
} else {
i = (state->bottom + 1) % ERR_NUM_ERRORS;
}
error = &state->errors[i];
ret = error->packed;
if (file != NULL && line != NULL) {
if (error->file == NULL) {
*file = "NA";
*line = 0;
} else {
*file = error->file;
*line = error->line;
}
}
if (data != NULL) {
if (error->data == NULL) {
*data = "";
if (flags != NULL) {
*flags = 0;
}
} else {
*data = error->data;
if (flags != NULL) {
*flags = error->flags & ERR_FLAG_PUBLIC_MASK;
}
/* If this error is being removed, take ownership of data from
* the error. The semantics are such that the caller doesn't
* take ownership either. Instead the error system takes
* ownership and retains it until the next call that affects the
* error queue. */
if (inc) {
if (error->flags & ERR_FLAG_MALLOCED) {
OPENSSL_free(state->to_free);
state->to_free = error->data;
}
error->data = NULL;
error->flags = 0;
}
}
}
if (inc) {
assert(!top);
err_clear(error);
state->bottom = i;
}
return ret;
}
uint32_t ERR_get_error(void) {
return get_error_values(1 /* inc */, 0 /* bottom */, NULL, NULL, NULL, NULL);
}
uint32_t ERR_get_error_line(const char **file, int *line) {
return get_error_values(1 /* inc */, 0 /* bottom */, file, line, NULL, NULL);
}
uint32_t ERR_get_error_line_data(const char **file, int *line,
const char **data, int *flags) {
return get_error_values(1 /* inc */, 0 /* bottom */, file, line, data, flags);
}
uint32_t ERR_peek_error(void) {
return get_error_values(0 /* peek */, 0 /* bottom */, NULL, NULL, NULL, NULL);
}
uint32_t ERR_peek_error_line(const char **file, int *line) {
return get_error_values(0 /* peek */, 0 /* bottom */, file, line, NULL, NULL);
}
uint32_t ERR_peek_error_line_data(const char **file, int *line,
const char **data, int *flags) {
return get_error_values(0 /* peek */, 0 /* bottom */, file, line, data,
flags);
}
uint32_t ERR_peek_last_error(void) {
return get_error_values(0 /* peek */, 1 /* top */, NULL, NULL, NULL, NULL);
}
uint32_t ERR_peek_last_error_line(const char **file, int *line) {
return get_error_values(0 /* peek */, 1 /* top */, file, line, NULL, NULL);
}
uint32_t ERR_peek_last_error_line_data(const char **file, int *line,
const char **data, int *flags) {
return get_error_values(0 /* peek */, 1 /* top */, file, line, data, flags);
}
void ERR_clear_error(void) {
ERR_STATE *const state = err_get_state();
unsigned i;
if (state == NULL) {
return;
}
for (i = 0; i < ERR_NUM_ERRORS; i++) {
err_clear(&state->errors[i]);
}
OPENSSL_free(state->to_free);
state->to_free = NULL;
state->top = state->bottom = 0;
}
void ERR_remove_thread_state(const CRYPTO_THREADID *tid) {
if (tid != NULL) {
assert(0);
return;
}
ERR_clear_error();
}
int ERR_get_next_error_library(void) {
int ret;
CRYPTO_STATIC_MUTEX_lock_write(&global_next_library_mutex);
ret = global_next_library++;
CRYPTO_STATIC_MUTEX_unlock_write(&global_next_library_mutex);
return ret;
}
void ERR_remove_state(unsigned long pid) {
ERR_clear_error();
}
void ERR_clear_system_error(void) {
errno = 0;
}
char *ERR_error_string(uint32_t packed_error, char *ret) {
static char buf[ERR_ERROR_STRING_BUF_LEN];
if (ret == NULL) {
/* TODO(fork): remove this. */
ret = buf;
}
#if !defined(NDEBUG)
/* This is aimed to help catch callers who don't provide
* |ERR_ERROR_STRING_BUF_LEN| bytes of space. */
memset(ret, 0, ERR_ERROR_STRING_BUF_LEN);
#endif
ERR_error_string_n(packed_error, ret, ERR_ERROR_STRING_BUF_LEN);
return ret;
}
void ERR_error_string_n(uint32_t packed_error, char *buf, size_t len) {
char lib_buf[64], reason_buf[64];
const char *lib_str, *reason_str;
unsigned lib, reason;
if (len == 0) {
return;
}
lib = ERR_GET_LIB(packed_error);
reason = ERR_GET_REASON(packed_error);
lib_str = ERR_lib_error_string(packed_error);
reason_str = ERR_reason_error_string(packed_error);
if (lib_str == NULL) {
BIO_snprintf(lib_buf, sizeof(lib_buf), "lib(%u)", lib);
lib_str = lib_buf;
}
if (reason_str == NULL) {
BIO_snprintf(reason_buf, sizeof(reason_buf), "reason(%u)", reason);
reason_str = reason_buf;
}
BIO_snprintf(buf, len, "error:%08" PRIx32 ":%s:OPENSSL_internal:%s",
packed_error, lib_str, reason_str);
if (strlen(buf) == len - 1) {
/* output may be truncated; make sure we always have 5 colon-separated
* fields, i.e. 4 colons. */
static const unsigned num_colons = 4;
unsigned i;
char *s = buf;
if (len <= num_colons) {
/* In this situation it's not possible to ensure that the correct number
* of colons are included in the output. */
return;
}
for (i = 0; i < num_colons; i++) {
char *colon = strchr(s, ':');
char *last_pos = &buf[len - 1] - num_colons + i;
if (colon == NULL || colon > last_pos) {
/* set colon |i| at last possible position (buf[len-1] is the
* terminating 0). If we're setting this colon, then all whole of the
* rest of the string must be colons in order to have the correct
* number. */
memset(last_pos, ':', num_colons - i);
break;
}
s = colon + 1;
}
}
}
// err_string_cmp is a compare function for searching error values with
// |bsearch| in |err_string_lookup|.
static int err_string_cmp(const void *a, const void *b) {
const uint32_t a_key = *((const uint32_t*) a) >> 15;
const uint32_t b_key = *((const uint32_t*) b) >> 15;
if (a_key < b_key) {
return -1;
} else if (a_key > b_key) {
return 1;
} else {
return 0;
}
}
/* err_string_lookup looks up the string associated with |lib| and |key| in
* |values| and |string_data|. It returns the string or NULL if not found. */
static const char *err_string_lookup(uint32_t lib, uint32_t key,
const uint32_t *values,
size_t num_values,
const char *string_data) {
/* |values| points to data in err_data.h, which is generated by
* err_data_generate.go. It's an array of uint32_t values. Each value has the
* following structure:
* | lib | key | offset |
* |6 bits| 11 bits | 15 bits |
*
* The |lib| value is a library identifier: one of the |ERR_LIB_*| values.
* The |key| is a reason code, depending on the context.
* The |offset| is the number of bytes from the start of |string_data| where
* the (NUL terminated) string for this value can be found.
*
* Values are sorted based on treating the |lib| and |key| part as an
* unsigned integer. */
if (lib >= (1 << 6) || key >= (1 << 11)) {
return NULL;
}
uint32_t search_key = lib << 26 | key << 15;
const uint32_t *result = bsearch(&search_key, values, num_values,
sizeof(uint32_t), err_string_cmp);
if (result == NULL) {
return NULL;
}
return &string_data[(*result) & 0x7fff];
}
static const char *const kLibraryNames[ERR_NUM_LIBS] = {
"invalid library (0)",
"unknown library", /* ERR_LIB_NONE */
"system library", /* ERR_LIB_SYS */
"bignum routines", /* ERR_LIB_BN */
"RSA routines", /* ERR_LIB_RSA */
"Diffie-Hellman routines", /* ERR_LIB_DH */
"public key routines", /* ERR_LIB_EVP */
"memory buffer routines", /* ERR_LIB_BUF */
"object identifier routines", /* ERR_LIB_OBJ */
"PEM routines", /* ERR_LIB_PEM */
"DSA routines", /* ERR_LIB_DSA */
"X.509 certificate routines", /* ERR_LIB_X509 */
"ASN.1 encoding routines", /* ERR_LIB_ASN1 */
"configuration file routines", /* ERR_LIB_CONF */
"common libcrypto routines", /* ERR_LIB_CRYPTO */
"elliptic curve routines", /* ERR_LIB_EC */
"SSL routines", /* ERR_LIB_SSL */
"BIO routines", /* ERR_LIB_BIO */
"PKCS7 routines", /* ERR_LIB_PKCS7 */
"PKCS8 routines", /* ERR_LIB_PKCS8 */
"X509 V3 routines", /* ERR_LIB_X509V3 */
"random number generator", /* ERR_LIB_RAND */
"ENGINE routines", /* ERR_LIB_ENGINE */
"OCSP routines", /* ERR_LIB_OCSP */
"UI routines", /* ERR_LIB_UI */
"COMP routines", /* ERR_LIB_COMP */
"ECDSA routines", /* ERR_LIB_ECDSA */
"ECDH routines", /* ERR_LIB_ECDH */
"HMAC routines", /* ERR_LIB_HMAC */
"Digest functions", /* ERR_LIB_DIGEST */
"Cipher functions", /* ERR_LIB_CIPHER */
"HKDF functions", /* ERR_LIB_HKDF */
"User defined functions", /* ERR_LIB_USER */
};
const char *ERR_lib_error_string(uint32_t packed_error) {
const uint32_t lib = ERR_GET_LIB(packed_error);
if (lib >= ERR_NUM_LIBS) {
return NULL;
}
return kLibraryNames[lib];
}
const char *ERR_func_error_string(uint32_t packed_error) {
return "OPENSSL_internal";
}
const char *ERR_reason_error_string(uint32_t packed_error) {
const uint32_t lib = ERR_GET_LIB(packed_error);
const uint32_t reason = ERR_GET_REASON(packed_error);
if (lib == ERR_LIB_SYS) {
if (reason < 127) {
return strerror(reason);
}
return NULL;
}
if (reason < ERR_NUM_LIBS) {
return kLibraryNames[reason];
}
if (reason < 100) {
switch (reason) {
case ERR_R_MALLOC_FAILURE:
return "malloc failure";
case ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED:
return "function should not have been called";
case ERR_R_PASSED_NULL_PARAMETER:
return "passed a null parameter";
case ERR_R_INTERNAL_ERROR:
return "internal error";
case ERR_R_OVERFLOW:
return "overflow";
default:
return NULL;
}
}
return err_string_lookup(lib, reason, kOpenSSLReasonValues,
kOpenSSLReasonValuesLen, kOpenSSLReasonStringData);
}
void ERR_print_errors_cb(ERR_print_errors_callback_t callback, void *ctx) {
char buf[ERR_ERROR_STRING_BUF_LEN];
char buf2[1024];
const char *file, *data;
int line, flags;
uint32_t packed_error;
/* thread_hash is the least-significant bits of the |ERR_STATE| pointer value
* for this thread. */
const unsigned long thread_hash = (uintptr_t) err_get_state();
for (;;) {
packed_error = ERR_get_error_line_data(&file, &line, &data, &flags);
if (packed_error == 0) {
break;
}
ERR_error_string_n(packed_error, buf, sizeof(buf));
BIO_snprintf(buf2, sizeof(buf2), "%lu:%s:%s:%d:%s\n", thread_hash, buf,
file, line, (flags & ERR_FLAG_STRING) ? data : "");
if (callback(buf2, strlen(buf2), ctx) <= 0) {
break;
}
}
}
static int print_errors_to_file(const char* msg, size_t msg_len, void* ctx) {
assert(msg[msg_len] == '\0');
FILE* fp = ctx;
int res = fputs(msg, fp);
return res < 0 ? 0 : 1;
}
void ERR_print_errors_fp(FILE *file) {
ERR_print_errors_cb(print_errors_to_file, file);
}
/* err_set_error_data sets the data on the most recent error. The |flags|
* argument is a combination of the |ERR_FLAG_*| values. */
static void err_set_error_data(char *data, int flags) {
ERR_STATE *const state = err_get_state();
struct err_error_st *error;
if (state == NULL || state->top == state->bottom) {
if (flags & ERR_FLAG_MALLOCED) {
OPENSSL_free(data);
}
return;
}
error = &state->errors[state->top];
err_clear_data(error);
error->data = data;
error->flags = flags;
}
void ERR_put_error(int library, int unused, int reason, const char *file,
unsigned line) {
ERR_STATE *const state = err_get_state();
struct err_error_st *error;
if (state == NULL) {
return;
}
if (library == ERR_LIB_SYS && reason == 0) {
#if defined(OPENSSL_WINDOWS)
reason = GetLastError();
#else
reason = errno;
#endif
}
state->top = (state->top + 1) % ERR_NUM_ERRORS;
if (state->top == state->bottom) {
state->bottom = (state->bottom + 1) % ERR_NUM_ERRORS;
}
error = &state->errors[state->top];
err_clear(error);
error->file = file;
error->line = line;
error->packed = ERR_PACK(library, reason);
}
/* ERR_add_error_data_vdata takes a variable number of const char* pointers,
* concatenates them and sets the result as the data on the most recent
* error. */
static void err_add_error_vdata(unsigned num, va_list args) {
size_t alloced, new_len, len = 0, substr_len;
char *buf;
const char *substr;
unsigned i;
alloced = 80;
buf = OPENSSL_malloc(alloced + 1);
if (buf == NULL) {
return;
}
for (i = 0; i < num; i++) {
substr = va_arg(args, const char *);
if (substr == NULL) {
continue;
}
substr_len = strlen(substr);
new_len = len + substr_len;
if (new_len > alloced) {
char *new_buf;
if (alloced + 20 + 1 < alloced) {
/* overflow. */
OPENSSL_free(buf);
return;
}
alloced = new_len + 20;
new_buf = OPENSSL_realloc(buf, alloced + 1);
if (new_buf == NULL) {
OPENSSL_free(buf);
return;
}
buf = new_buf;
}
memcpy(buf + len, substr, substr_len);
len = new_len;
}
buf[len] = 0;
err_set_error_data(buf, ERR_FLAG_MALLOCED | ERR_FLAG_STRING);
}
void ERR_add_error_data(unsigned count, ...) {
va_list args;
va_start(args, count);
err_add_error_vdata(count, args);
va_end(args);
}
void ERR_add_error_dataf(const char *format, ...) {
va_list ap;
char *buf;
static const unsigned buf_len = 256;
/* A fixed-size buffer is used because va_copy (which would be needed in
* order to call vsnprintf twice and measure the buffer) wasn't defined until
* C99. */
buf = OPENSSL_malloc(buf_len + 1);
if (buf == NULL) {
return;
}
va_start(ap, format);
BIO_vsnprintf(buf, buf_len, format, ap);
buf[buf_len] = 0;
va_end(ap);
err_set_error_data(buf, ERR_FLAG_MALLOCED | ERR_FLAG_STRING);
}
int ERR_set_mark(void) {
ERR_STATE *const state = err_get_state();
if (state == NULL || state->bottom == state->top) {
return 0;
}
state->errors[state->top].flags |= ERR_FLAG_MARK;
return 1;
}
int ERR_pop_to_mark(void) {
ERR_STATE *const state = err_get_state();
if (state == NULL) {
return 0;
}
while (state->bottom != state->top) {
struct err_error_st *error = &state->errors[state->top];
if ((error->flags & ERR_FLAG_MARK) != 0) {
error->flags &= ~ERR_FLAG_MARK;
return 1;
}
err_clear(error);
if (state->top == 0) {
state->top = ERR_NUM_ERRORS - 1;
} else {
state->top--;
}
}
return 0;
}
void ERR_load_crypto_strings(void) {}
void ERR_free_strings(void) {}
void ERR_load_BIO_strings(void) {}
void ERR_load_ERR_strings(void) {}
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