1 /*
2 * Copyright (c) Huawei Technologies Co., Ltd. 2014-2020. 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 * Author: lishunda
13 * Create: 2014-02-25
14 */
15
16 #ifndef SECUREC_FOR_WCHAR
17 #define SECUREC_FOR_WCHAR
18 #endif
19
20 #include "secinput.h"
21
22 /*
23 * <FUNCTION DESCRIPTION>
24 * The vwscanf_s function is the wide-character equivalent of the vscanf_s function
25 * The vwscanf_s function is the wide-character version of vscanf_s. The
26 * function reads data from the standard input stream stdin and writes the
27 * data into the location that's given by argument. Each argument must be a
28 * pointer to a variable of a type that corresponds to a type specifier in
29 * format. If copying occurs between strings that overlap, the behavior is
30 * undefined.
31 *
32 * <INPUT PARAMETERS>
33 * format Format control string.
34 * argList pointer to list of arguments
35 *
36 * <OUTPUT PARAMETERS>
37 * argList the converted value stored in user assigned address
38 *
39 * <RETURN VALUE>
40 * Returns the number of fields successfully converted and assigned;
41 * the return value does not include fields that were read but not assigned.
42 * A return value of 0 indicates that no fields were assigned.
43 * return -1 if an error occurs.
44 */
vwscanf_s(const wchar_t * format,va_list argList)45 int vwscanf_s(const wchar_t *format, va_list argList)
46 {
47 int retVal; /* If initialization causes e838 */
48 SecFileStream fStr;
49 SECUREC_FILE_STREAM_FROM_STDIN(&fStr);
50 if (format == NULL || fStr.pf == NULL) {
51 SECUREC_ERROR_INVALID_PARAMTER("vwscanf_s");
52 return SECUREC_SCANF_EINVAL;
53 }
54
55 SECUREC_LOCK_STDIN(0, fStr.pf);
56 retVal = SecInputSW(&fStr, format, argList);
57 SECUREC_UNLOCK_STDIN(0, fStr.pf);
58 if (retVal < 0) {
59 SECUREC_ERROR_INVALID_PARAMTER("vwscanf_s");
60 return SECUREC_SCANF_EINVAL;
61 }
62
63 return retVal;
64 }
65
66