xref: /illumos-gate/usr/src/common/acpica/utilities/utnonansi.c (revision 35786f6866ae52207d0f1a25fe7ca5f652f32ce0)
1 /*******************************************************************************
2  *
3  * Module Name: utnonansi - Non-ansi C library functions
4  *
5  ******************************************************************************/
6 
7 /******************************************************************************
8  *
9  * 1. Copyright Notice
10  *
11  * Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp.
12  * All rights reserved.
13  *
14  * 2. License
15  *
16  * 2.1. This is your license from Intel Corp. under its intellectual property
17  * rights. You may have additional license terms from the party that provided
18  * you this software, covering your right to use that party's intellectual
19  * property rights.
20  *
21  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22  * copy of the source code appearing in this file ("Covered Code") an
23  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24  * base code distributed originally by Intel ("Original Intel Code") to copy,
25  * make derivatives, distribute, use and display any portion of the Covered
26  * Code in any form, with the right to sublicense such rights; and
27  *
28  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29  * license (with the right to sublicense), under only those claims of Intel
30  * patents that are infringed by the Original Intel Code, to make, use, sell,
31  * offer to sell, and import the Covered Code and derivative works thereof
32  * solely to the minimum extent necessary to exercise the above copyright
33  * license, and in no event shall the patent license extend to any additions
34  * to or modifications of the Original Intel Code. No other license or right
35  * is granted directly or by implication, estoppel or otherwise;
36  *
37  * The above copyright and patent license is granted only if the following
38  * conditions are met:
39  *
40  * 3. Conditions
41  *
42  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43  * Redistribution of source code of any substantial portion of the Covered
44  * Code or modification with rights to further distribute source must include
45  * the above Copyright Notice, the above License, this list of Conditions,
46  * and the following Disclaimer and Export Compliance provision. In addition,
47  * Licensee must cause all Covered Code to which Licensee contributes to
48  * contain a file documenting the changes Licensee made to create that Covered
49  * Code and the date of any change. Licensee must include in that file the
50  * documentation of any changes made by any predecessor Licensee. Licensee
51  * must include a prominent statement that the modification is derived,
52  * directly or indirectly, from Original Intel Code.
53  *
54  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55  * Redistribution of source code of any substantial portion of the Covered
56  * Code or modification without rights to further distribute source must
57  * include the following Disclaimer and Export Compliance provision in the
58  * documentation and/or other materials provided with distribution. In
59  * addition, Licensee may not authorize further sublicense of source of any
60  * portion of the Covered Code, and must include terms to the effect that the
61  * license from Licensee to its licensee is limited to the intellectual
62  * property embodied in the software Licensee provides to its licensee, and
63  * not to intellectual property embodied in modifications its licensee may
64  * make.
65  *
66  * 3.3. Redistribution of Executable. Redistribution in executable form of any
67  * substantial portion of the Covered Code or modification must reproduce the
68  * above Copyright Notice, and the following Disclaimer and Export Compliance
69  * provision in the documentation and/or other materials provided with the
70  * distribution.
71  *
72  * 3.4. Intel retains all right, title, and interest in and to the Original
73  * Intel Code.
74  *
75  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76  * Intel shall be used in advertising or otherwise to promote the sale, use or
77  * other dealings in products derived from or relating to the Covered Code
78  * without prior written authorization from Intel.
79  *
80  * 4. Disclaimer and Export Compliance
81  *
82  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83  * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85  * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86  * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88  * PARTICULAR PURPOSE.
89  *
90  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97  * LIMITED REMEDY.
98  *
99  * 4.3. Licensee shall not export, either directly or indirectly, any of this
100  * software or system incorporating such software without first obtaining any
101  * required license or other approval from the U. S. Department of Commerce or
102  * any other agency or department of the United States Government. In the
103  * event Licensee exports any such software from the United States or
104  * re-exports any such software from a foreign destination, Licensee shall
105  * ensure that the distribution and export/re-export of the software is in
106  * compliance with all laws, regulations, orders, or other restrictions of the
107  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108  * any of its subsidiaries will export/re-export any technical data, process,
109  * software, or service, directly or indirectly, to any country for which the
110  * United States government or any agency thereof requires an export license,
111  * other governmental approval, or letter of assurance, without first obtaining
112  * such license, approval or letter.
113  *
114  *****************************************************************************
115  *
116  * Alternatively, you may choose to be licensed under the terms of the
117  * following license:
118  *
119  * Redistribution and use in source and binary forms, with or without
120  * modification, are permitted provided that the following conditions
121  * are met:
122  * 1. Redistributions of source code must retain the above copyright
123  *    notice, this list of conditions, and the following disclaimer,
124  *    without modification.
125  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126  *    substantially similar to the "NO WARRANTY" disclaimer below
127  *    ("Disclaimer") and any redistribution must be conditioned upon
128  *    including a substantially similar Disclaimer requirement for further
129  *    binary redistribution.
130  * 3. Neither the names of the above-listed copyright holders nor the names
131  *    of any contributors may be used to endorse or promote products derived
132  *    from this software without specific prior written permission.
133  *
134  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145  *
146  * Alternatively, you may choose to be licensed under the terms of the
147  * GNU General Public License ("GPL") version 2 as published by the Free
148  * Software Foundation.
149  *
150  *****************************************************************************/
151 
152 #include "acpi.h"
153 #include "accommon.h"
154 
155 
156 #define _COMPONENT          ACPI_UTILITIES
157         ACPI_MODULE_NAME    ("utnonansi")
158 
159 /*
160  * Non-ANSI C library functions - strlwr, strupr, stricmp, and "safe"
161  * string functions.
162  */
163 
164 /*******************************************************************************
165  *
166  * FUNCTION:    AcpiUtStrlwr (strlwr)
167  *
168  * PARAMETERS:  SrcString       - The source string to convert
169  *
170  * RETURN:      None
171  *
172  * DESCRIPTION: Convert a string to lowercase
173  *
174  ******************************************************************************/
175 
176 void
AcpiUtStrlwr(char * SrcString)177 AcpiUtStrlwr (
178     char                    *SrcString)
179 {
180     char                    *String;
181 
182 
183     ACPI_FUNCTION_ENTRY ();
184 
185 
186     if (!SrcString)
187     {
188         return;
189     }
190 
191     /* Walk entire string, lowercasing the letters */
192 
193     for (String = SrcString; *String; String++)
194     {
195         *String = (char) tolower ((int) *String);
196     }
197 }
198 
199 
200 /*******************************************************************************
201  *
202  * FUNCTION:    AcpiUtStrupr (strupr)
203  *
204  * PARAMETERS:  SrcString       - The source string to convert
205  *
206  * RETURN:      None
207  *
208  * DESCRIPTION: Convert a string to uppercase
209  *
210  ******************************************************************************/
211 
212 void
AcpiUtStrupr(char * SrcString)213 AcpiUtStrupr (
214     char                    *SrcString)
215 {
216     char                    *String;
217 
218 
219     ACPI_FUNCTION_ENTRY ();
220 
221 
222     if (!SrcString)
223     {
224         return;
225     }
226 
227     /* Walk entire string, uppercasing the letters */
228 
229     for (String = SrcString; *String; String++)
230     {
231         *String = (char) toupper ((int) *String);
232     }
233 }
234 
235 
236 /******************************************************************************
237  *
238  * FUNCTION:    AcpiUtStricmp (stricmp)
239  *
240  * PARAMETERS:  String1             - first string to compare
241  *              String2             - second string to compare
242  *
243  * RETURN:      int that signifies string relationship. Zero means strings
244  *              are equal.
245  *
246  * DESCRIPTION: Case-insensitive string compare. Implementation of the
247  *              non-ANSI stricmp function.
248  *
249  ******************************************************************************/
250 
251 int
AcpiUtStricmp(char * String1,char * String2)252 AcpiUtStricmp (
253     char                    *String1,
254     char                    *String2)
255 {
256     int                     c1;
257     int                     c2;
258 
259 
260     do
261     {
262         c1 = tolower ((int) *String1);
263         c2 = tolower ((int) *String2);
264 
265         String1++;
266         String2++;
267     }
268     while ((c1 == c2) && (c1));
269 
270     return (c1 - c2);
271 }
272 
273 
274 #if defined (ACPI_DEBUGGER) || defined (ACPI_APPLICATION) || defined (ACPI_DEBUG_OUTPUT)
275 /*******************************************************************************
276  *
277  * FUNCTION:    AcpiUtSafeStrcpy, AcpiUtSafeStrcat, AcpiUtSafeStrncat
278  *
279  * PARAMETERS:  Adds a "DestSize" parameter to each of the standard string
280  *              functions. This is the size of the Destination buffer.
281  *
282  * RETURN:      TRUE if the operation would overflow the destination buffer.
283  *
284  * DESCRIPTION: Safe versions of standard Clib string functions. Ensure that
285  *              the result of the operation will not overflow the output string
286  *              buffer.
287  *
288  * NOTE:        These functions are typically only helpful for processing
289  *              user input and command lines. For most ACPICA code, the
290  *              required buffer length is precisely calculated before buffer
291  *              allocation, so the use of these functions is unnecessary.
292  *
293  ******************************************************************************/
294 
295 BOOLEAN
AcpiUtSafeStrcpy(char * Dest,ACPI_SIZE DestSize,char * Source)296 AcpiUtSafeStrcpy (
297     char                    *Dest,
298     ACPI_SIZE               DestSize,
299     char                    *Source)
300 {
301 
302     if (strlen (Source) >= DestSize)
303     {
304         return (TRUE);
305     }
306 
307     strcpy (Dest, Source);
308     return (FALSE);
309 }
310 
311 BOOLEAN
AcpiUtSafeStrcat(char * Dest,ACPI_SIZE DestSize,char * Source)312 AcpiUtSafeStrcat (
313     char                    *Dest,
314     ACPI_SIZE               DestSize,
315     char                    *Source)
316 {
317 
318     if ((strlen (Dest) + strlen (Source)) >= DestSize)
319     {
320         return (TRUE);
321     }
322 
323     strcat (Dest, Source);
324     return (FALSE);
325 }
326 
327 BOOLEAN
AcpiUtSafeStrncat(char * Dest,ACPI_SIZE DestSize,char * Source,ACPI_SIZE MaxTransferLength)328 AcpiUtSafeStrncat (
329     char                    *Dest,
330     ACPI_SIZE               DestSize,
331     char                    *Source,
332     ACPI_SIZE               MaxTransferLength)
333 {
334     ACPI_SIZE               ActualTransferLength;
335 
336 
337     ActualTransferLength = ACPI_MIN (MaxTransferLength, strlen (Source));
338 
339     if ((strlen (Dest) + ActualTransferLength) >= DestSize)
340     {
341         return (TRUE);
342     }
343 
344     strncat (Dest, Source, MaxTransferLength);
345     return (FALSE);
346 }
347 
348 void
AcpiUtSafeStrncpy(char * Dest,char * Source,ACPI_SIZE DestSize)349 AcpiUtSafeStrncpy (
350     char                    *Dest,
351     char                    *Source,
352     ACPI_SIZE               DestSize)
353 {
354     /* Always terminate destination string */
355 
356     strncpy (Dest, Source, DestSize);
357     Dest[DestSize - 1] = 0;
358 }
359 
360 #endif
361