- /* 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)
- #pragma warning(push, 3)
- #include <windows.h>
- #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);
- }
-
- const char *ERR_peek_function(void) {
- ERR_STATE *state = err_get_state();
- if (state == NULL || state->bottom == state->top) {
- return NULL;
- }
- return state->errors[(state->bottom + 1) % ERR_NUM_ERRORS].function;
- }
-
- 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(&global_next_library_mutex);
-
- return ret;
- }
-
- void ERR_remove_state(unsigned long pid) {
- ERR_clear_error();
- }
-
- void ERR_clear_system_error(void) {
- errno = 0;
- }
-
- static void err_error_string(uint32_t packed_error, const char *func_str,
- 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 (func_str == NULL) {
- func_str = "OPENSSL_internal";
- }
-
- 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:%s:%s",
- packed_error, lib_str, func_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;
- }
- }
- }
-
- 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) {
- err_error_string(packed_error, NULL, buf, len);
- }
-
- // 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 either a function or 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 (;;) {
- const char *function = ERR_peek_function();
- packed_error = ERR_get_error_line_data(&file, &line, &data, &flags);
- if (packed_error == 0) {
- break;
- }
-
- err_error_string(packed_error, function, 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 reason, const char *function,
- 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(WIN32)
- 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->function = function;
- 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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