1/*
2 * Copyright (c) Huawei Technologies Co., Ltd. 2014-2021. All rights reserved.
3 * Licensed under Mulan PSL v2.
4 * You can use this software according to the terms and conditions of the Mulan PSL v2.
5 * You may obtain a copy of Mulan PSL v2 at:
6 *          http://license.coscl.org.cn/MulanPSL2
7 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
8 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
9 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
10 * See the Mulan PSL v2 for more details.
11 * Description: vwscanf_s  function
12 * Create: 2014-02-25
13 */
14
15#ifndef SECUREC_FOR_WCHAR
16#define SECUREC_FOR_WCHAR
17#endif
18
19#include "secinput.h"
20
21/*
22 * <FUNCTION DESCRIPTION>
23 *    The  vwscanf_s  function  is  the  wide-character  equivalent  of the vscanf_s function
24 *    The vwscanf_s function is the wide-character version of vscanf_s. The
25 *    function reads data from the standard input stream stdin and writes the
26 *    data into the location that's given by argument. Each argument  must be a
27 *    pointer to a variable of a type that corresponds to a type specifier in
28 *    format. If copying occurs between strings that overlap, the behavior is
29 *    undefined.
30 *
31 * <INPUT PARAMETERS>
32 *    format                 Format control string.
33 *    argList                pointer to list of arguments
34 *
35 * <OUTPUT PARAMETERS>
36 *    argList                the converted value stored in user assigned address
37 *
38 * <RETURN VALUE>
39 *    Returns the number of fields successfully converted and assigned;
40 *    the return value does not include fields that were read but not assigned.
41 *    A return value of 0 indicates that no fields were assigned.
42 *    return -1 if an error occurs.
43 */
44int vwscanf_s(const wchar_t *format, va_list argList)
45{
46    int retVal;                 /* If initialization causes  e838 */
47    SecFileStream fStr;
48    SECUREC_FILE_STREAM_FROM_STDIN(&fStr);
49#if SECUREC_ENABLE_SCANF_FILE
50    if (format == NULL || fStr.pf == NULL) {
51#else
52    if (format == NULL) {
53#endif
54        SECUREC_ERROR_INVALID_PARAMTER("vwscanf_s");
55        return SECUREC_SCANF_EINVAL;
56    }
57
58#if SECUREC_ENABLE_SCANF_FILE
59    SECUREC_LOCK_STDIN(0, fStr.pf);
60#endif
61    retVal = SecInputSW(&fStr, format, argList);
62#if SECUREC_ENABLE_SCANF_FILE
63    SECUREC_UNLOCK_STDIN(0, fStr.pf);
64#endif
65    if (retVal < 0) {
66        SECUREC_ERROR_INVALID_PARAMTER("vwscanf_s");
67        return SECUREC_SCANF_EINVAL;
68    }
69
70    return retVal;
71}
72
73