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 */
vwscanf_s(const wchar_t * format,va_list argList)44 int 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