1 /*------------------------------------------------------------------
2 * safe_str_touppercase.c
3 *
4 * November 2008, Bo Berry
5 *
6 * Copyright (c) 2008-2011 by Cisco Systems, Inc
7 * All rights reserved.
8 *
9 * Permission is hereby granted, free of charge, to any person
10 * obtaining a copy of this software and associated documentation
11 * files (the "Software"), to deal in the Software without
12 * restriction, including without limitation the rights to use,
13 * copy, modify, merge, publish, distribute, sublicense, and/or
14 * sell copies of the Software, and to permit persons to whom the
15 * Software is furnished to do so, subject to the following
16 * conditions:
17 *
18 * The above copyright notice and this permission notice shall be
19 * included in all copies or substantial portions of the Software.
20 *
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
23 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
25 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
26 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
27 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
28 * OTHER DEALINGS IN THE SOFTWARE.
29 *------------------------------------------------------------------
30 */
31
32 #include "safeclib_private.h"
33 #include "safe_str_constraint.h"
34 #include "safe_str_lib.h"
35
36
37 /**
38 * NAME
39 * strtouppercase_s
40 *
41 * SYNOPSIS
42 * #include "safe_str_lib.h"
43 * errno_t
44 * strlouppercase_s(char *dest, rsize_t dmax)
45 *
46 * DESCRIPTION
47 * Scans the string converting lowercase characters to
48 * uppercase, leaving all other characters unchanged.
49 * The scanning stops at the first null or after dmax
50 * characters.
51 *
52 * Extenstion to:
53 * ISO/IEC TR 24731, Programming languages, environments
54 * and system software interfaces, Extensions to the C Library,
55 * Part I: Bounds-checking interfaces
56 *
57 * INPUT PARAMETERS
58 * dest pointer to string
59 *
60 * dmax maximum length of string
61 *
62 * OUTPUT PARAMETERS
63 * dest updated string
64 *
65 * RUNTIME CONSTRAINTS
66 * dest shall not be a null pointer.
67 * dmax shall not equal zero.
68 * dmax shall not be greater than RSIZE_MAX_STR.
69 *
70 * RETURN VALUE
71 * EOK successful operation
72 * ESNULLP NULL pointer
73 * ESZEROL zero length
74 * ESLEMAX length exceeds max limit
75 *
76 * ALSO SEE
77 * strtolowercase_s()
78 *
79 */
80 errno_t
strtouppercase_s(char * dest,rsize_t dmax)81 strtouppercase_s (char *dest, rsize_t dmax)
82 {
83 if (!dest) {
84 invoke_safe_str_constraint_handler("strtouppercase_s: "
85 "dest is null",
86 NULL, ESNULLP);
87 return (ESNULLP);
88 }
89
90 if (dmax == 0) {
91 invoke_safe_str_constraint_handler("strtouppercase_s: "
92 "dmax is 0",
93 NULL, ESZEROL);
94 return (ESZEROL);
95 }
96
97 if (dmax > RSIZE_MAX_STR) {
98 invoke_safe_str_constraint_handler("strtouppercase_s: "
99 "dmax exceeds max",
100 NULL, ESLEMAX);
101 return (ESLEMAX);
102 }
103
104 while (*dest && dmax) {
105
106 if ((*dest >= 'a') && (*dest <= 'z')) {
107 *dest = (char)(*dest - 32);
108 }
109 dest++;
110 dmax--;
111 }
112
113 return (EOK);
114 }
115 EXPORT_SYMBOL(strtouppercase_s)
116