mirror of https://github.com/openssl/openssl.git
117 lines
3.0 KiB
C
117 lines
3.0 KiB
C
/*
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* Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/* TODO: When ERR_STATE becomes opaque, this musts be removed */
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#define OSSL_FORCE_ERR_STATE
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#include <string.h>
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#include <openssl/err.h>
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#include "err_local.h"
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void ERR_new(void)
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{
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ERR_STATE *es;
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es = err_get_state_int();
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if (es == NULL)
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return;
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/* Allocate a slot */
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err_get_slot(es);
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err_clear(es, es->top, 0);
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}
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void ERR_set_debug(const char *file, int line, const char *func)
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{
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ERR_STATE *es;
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es = err_get_state_int();
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if (es == NULL)
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return;
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err_set_debug(es, es->top, file, line, func);
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}
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void ERR_set_error(int lib, int reason, const char *fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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ERR_vset_error(lib, reason, fmt, args);
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va_end(args);
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}
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void ERR_vset_error(int lib, int reason, const char *fmt, va_list args)
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{
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ERR_STATE *es;
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char *buf = NULL;
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size_t buf_size = 0;
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unsigned long flags = 0;
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size_t i;
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es = err_get_state_int();
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if (es == NULL)
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return;
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i = es->top;
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if (fmt != NULL) {
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int printed_len = 0;
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char *rbuf = NULL;
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buf = es->err_data[i];
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buf_size = es->err_data_size[i];
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/*
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* To protect the string we just grabbed from tampering by other
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* functions we may call, or to protect them from freeing a pointer
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* that may no longer be valid at that point, we clear away the
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* data pointer and the flags. We will set them again at the end
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* of this function.
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*/
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es->err_data[i] = NULL;
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es->err_data_flags[i] = 0;
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/*
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* Try to maximize the space available. If that fails, we use what
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* we have.
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*/
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if (buf_size < ERR_MAX_DATA_SIZE
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&& (rbuf = OPENSSL_realloc(buf, ERR_MAX_DATA_SIZE)) != NULL) {
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buf = rbuf;
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buf_size = ERR_MAX_DATA_SIZE;
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}
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if (buf != NULL) {
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printed_len = BIO_vsnprintf(buf, buf_size, fmt, args);
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}
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if (printed_len < 0)
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printed_len = 0;
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buf[printed_len] = '\0';
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/*
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* Try to reduce the size, but only if we maximized above. If that
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* fails, we keep what we have.
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* (According to documentation, realloc leaves the old buffer untouched
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* if it fails)
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*/
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if ((rbuf = OPENSSL_realloc(buf, printed_len + 1)) != NULL) {
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buf = rbuf;
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buf_size = printed_len + 1;
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}
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if (buf != NULL)
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flags = ERR_TXT_MALLOCED | ERR_TXT_STRING;
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}
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err_clear_data(es, es->top, 0);
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err_set_error(es, es->top, lib, reason);
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if (fmt != NULL)
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err_set_data(es, es->top, buf, buf_size, flags);
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}
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