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92 lines
3.4 KiB
92 lines
3.4 KiB
5 years ago
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/**
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* Copyright 2020 Huawei Technologies Co., Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define SECUREC_INLINE_DO_MEMCPY 1
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#include "securecutil.h"
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static errno_t SecDoWcscpy(wchar_t *strDest, size_t destMax, const wchar_t *strSrc)
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{
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size_t srcStrLen;
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SECUREC_CALC_WSTR_LEN(strSrc, destMax, &srcStrLen);
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if (srcStrLen == destMax) {
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strDest[0] = '\0';
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SECUREC_ERROR_INVALID_RANGE("wcscpy_s");
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return ERANGE_AND_RESET;
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}
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if (strDest == strSrc) {
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return EOK;
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}
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if (SECUREC_STRING_NO_OVERLAP(strDest, strSrc, srcStrLen)) {
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/* performance optimization srcStrLen include '\0' */
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SecDoMemcpy(strDest, strSrc, (srcStrLen + 1) * sizeof(wchar_t)); /* single character length include \0 */
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return EOK;
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} else {
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strDest[0] = L'\0';
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SECUREC_ERROR_BUFFER_OVERLAP("wcscpy_s");
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return EOVERLAP_AND_RESET;
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}
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}
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/*
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* <FUNCTION DESCRIPTION>
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* The wcscpy_s function copies the wide string pointed to by strSrc
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* (including theterminating null wide character) into the array pointed to by strDest
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* <INPUT PARAMETERS>
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* strDest Destination string buffer
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* destMax Size of the destination string buffer.
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* strSrc Null-terminated source string buffer.
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*
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* <OUTPUT PARAMETERS>
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* strDest is updated.
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*
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* <RETURN VALUE>
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* EOK Success
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* EINVAL strDest is NULL and destMax != 0 and destMax <= SECUREC_WCHAR_STRING_MAX_LEN
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* EINVAL_AND_RESET strDest != NULL and strSrc is NULLL and destMax != 0
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* and destMax <= SECUREC_WCHAR_STRING_MAX_LEN
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* ERANGE destMax > SECUREC_WCHAR_STRING_MAX_LEN or destMax is 0
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* ERANGE_AND_RESET destMax <= length of strSrc and strDest != strSrc
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* and strDest != NULL and strSrc != NULL and destMax != 0
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* and destMax <= SECUREC_WCHAR_STRING_MAX_LEN and not overlap
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* EOVERLAP_AND_RESET dest buffer and source buffer are overlapped and destMax != 0
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* and destMax <= SECUREC_WCHAR_STRING_MAX_LEN
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* and strDest != NULL and strSrc !=NULL and strDest != strSrc
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*
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* If there is a runtime-constraint violation, strDest[0] will be set to the '\0' when strDest and destMax valid
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*/
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errno_t wcscpy_s(wchar_t *strDest, size_t destMax, const wchar_t *strSrc)
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{
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if (destMax == 0 || destMax > SECUREC_WCHAR_STRING_MAX_LEN) {
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SECUREC_ERROR_INVALID_RANGE("wcscpy_s");
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return ERANGE;
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}
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if (strDest == NULL || strSrc == NULL) {
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SECUREC_ERROR_INVALID_PARAMTER("wcscpy_s");
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if (strDest != NULL) {
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strDest[0] = L'\0';
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return EINVAL_AND_RESET;
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}
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return EINVAL;
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}
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return SecDoWcscpy(strDest, destMax, strSrc);
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}
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