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asluuid.c revision 1.1.1.5 
      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 "aslcompiler.h"
     45 
     46 #define _COMPONENT          ACPI_COMPILER
     47         ACPI_MODULE_NAME    ("asluuid")
     48 
     49 
     50 extern 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 
     65 ACPI_STATUS
     66 AuValidateUuid (
     67     char                    *InString)
     68 {
     69     UINT32                  i;
     70 
     71 
     72     if (!InString || (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 
    123 ACPI_STATUS
    124 AuConvertUuidToString (
    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