asluuid.c revision 281075 
1/******************************************************************************
2 *
3 * Module Name: asluuid-- compiler UUID support
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2015, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions, and the following disclaimer,
16 *    without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 *    substantially similar to the "NO WARRANTY" disclaimer below
19 *    ("Disclaimer") and any redistribution must be conditioned upon
20 *    including a substantially similar Disclaimer requirement for further
21 *    binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 *    of any contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 */
43
44#include <contrib/dev/acpica/compiler/aslcompiler.h>
45
46#define _COMPONENT          ACPI_COMPILER
47        ACPI_MODULE_NAME    ("asluuid")
48
49
50extern UINT8    AcpiGbl_MapToUuidOffset[UUID_BUFFER_LENGTH];
51
52
53/*******************************************************************************
54 *
55 * FUNCTION:    AuValiduateUuid
56 *
57 * PARAMETERS:  InString            - 36-byte formatted UUID string
58 *
59 * RETURN:      Status
60 *
61 * DESCRIPTION: Check all 36 characters for correct format
62 *
63 ******************************************************************************/
64
65ACPI_STATUS
66AuValidateUuid (
67    char                    *InString)
68{
69    UINT32                  i;
70
71
72    if (!InString || (ACPI_STRLEN (InString) != UUID_STRING_LENGTH))
73    {
74        return (AE_BAD_PARAMETER);
75    }
76
77    /* Check all 36 characters for correct format */
78
79    for (i = 0; i < UUID_STRING_LENGTH; i++)
80    {
81        /* Must have 4 hyphens (dashes) in these positions: */
82
83        if ((i == UUID_HYPHEN1_OFFSET) ||
84            (i == UUID_HYPHEN2_OFFSET) ||
85            (i == UUID_HYPHEN3_OFFSET) ||
86            (i == UUID_HYPHEN4_OFFSET))
87        {
88            if (InString[i] != '-')
89            {
90                return (AE_BAD_PARAMETER);
91            }
92        }
93
94        /* All other positions must contain hex digits */
95
96        else
97        {
98            if (!isxdigit ((int) InString[i]))
99            {
100                return (AE_BAD_PARAMETER);
101            }
102        }
103    }
104
105    return (AE_OK);
106}
107
108
109/*******************************************************************************
110 *
111 * FUNCTION:    AuConvertUuidToString
112 *
113 * PARAMETERS:  UuidBuffer          - 16-byte UUID buffer
114 *              OutString           - 36-byte formatted UUID string
115 *
116 * RETURN:      Status
117 *
118 * DESCRIPTION: Convert 16-byte UUID buffer to 36-byte formatted UUID string
119 *              OutString must be 37 bytes to include null terminator.
120 *
121 ******************************************************************************/
122
123ACPI_STATUS
124AuConvertUuidToString (
125    char                    *UuidBuffer,
126    char                    *OutString)
127{
128    UINT32                  i;
129
130
131    if (!UuidBuffer || !OutString)
132    {
133        return (AE_BAD_PARAMETER);
134    }
135
136    for (i = 0; i < UUID_BUFFER_LENGTH; i++)
137    {
138        OutString[AcpiGbl_MapToUuidOffset[i]] =
139            AcpiUtHexToAsciiChar (UuidBuffer[i], 4);
140
141        OutString[AcpiGbl_MapToUuidOffset[i] + 1] =
142            AcpiUtHexToAsciiChar (UuidBuffer[i], 0);
143    }
144
145    /* Insert required hyphens (dashes) */
146
147    OutString[UUID_HYPHEN1_OFFSET] =
148    OutString[UUID_HYPHEN2_OFFSET] =
149    OutString[UUID_HYPHEN3_OFFSET] =
150    OutString[UUID_HYPHEN4_OFFSET] = '-';
151
152    OutString[UUID_STRING_LENGTH] = 0; /* Null terminate */
153    return (AE_OK);
154}
155