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/******************************************************************************

 *

 * Module Name: asluuid-- compiler UUID support

 *

 *****************************************************************************/

/******************************************************************************

 *

 * 1. Copyright Notice

 *

 * Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp.

 * All rights reserved.

 *

 * 2. License

 *

 * 2.1. This is your license from Intel Corp. under its intellectual property

 * rights.  You may have additional license terms from the party that provided

 * you this software, covering your right to use that party's intellectual

 * property rights.

 *

 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a

 * copy of the source code appearing in this file ("Covered Code") an

 * irrevocable, perpetual, worldwide license under Intel's copyrights in the

 * base code distributed originally by Intel ("Original Intel Code") to copy,

 * make derivatives, distribute, use and display any portion of the Covered

 * Code in any form, with the right to sublicense such rights; and

 *

 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent

 * license (with the right to sublicense), under only those claims of Intel

 * patents that are infringed by the Original Intel Code, to make, use, sell,

 * offer to sell, and import the Covered Code and derivative works thereof

 * solely to the minimum extent necessary to exercise the above copyright

 * license, and in no event shall the patent license extend to any additions

 * to or modifications of the Original Intel Code.  No other license or right

 * is granted directly or by implication, estoppel or otherwise;

 *

 * The above copyright and patent license is granted only if the following

 * conditions are met:

 *

 * 3. Conditions

 *

 * 3.1. Redistribution of Source with Rights to Further Distribute Source.

 * Redistribution of source code of any substantial portion of the Covered

 * Code or modification with rights to further distribute source must include

 * the above Copyright Notice, the above License, this list of Conditions,

 * and the following Disclaimer and Export Compliance provision.  In addition,

 * Licensee must cause all Covered Code to which Licensee contributes to

 * contain a file documenting the changes Licensee made to create that Covered

 * Code and the date of any change.  Licensee must include in that file the

 * documentation of any changes made by any predecessor Licensee.  Licensee

 * must include a prominent statement that the modification is derived,

 * directly or indirectly, from Original Intel Code.

 *

 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.

 * Redistribution of source code of any substantial portion of the Covered

 * Code or modification without rights to further distribute source must

 * include the following Disclaimer and Export Compliance provision in the

 * documentation and/or other materials provided with distribution.  In

 * addition, Licensee may not authorize further sublicense of source of any

 * portion of the Covered Code, and must include terms to the effect that the

 * license from Licensee to its licensee is limited to the intellectual

 * property embodied in the software Licensee provides to its licensee, and

 * not to intellectual property embodied in modifications its licensee may

 * make.

 *

 * 3.3. Redistribution of Executable. Redistribution in executable form of any

 * substantial portion of the Covered Code or modification must reproduce the

 * above Copyright Notice, and the following Disclaimer and Export Compliance

 * provision in the documentation and/or other materials provided with the

 * distribution.

 *

 * 3.4. Intel retains all right, title, and interest in and to the Original

 * Intel Code.

 *

 * 3.5. Neither the name Intel nor any other trademark owned or controlled by

 * Intel shall be used in advertising or otherwise to promote the sale, use or

 * other dealings in products derived from or relating to the Covered Code

 * without prior written authorization from Intel.

 *

 * 4. Disclaimer and Export Compliance

 *

 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED

 * HERE.  ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE

 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT,  ASSISTANCE,

 * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY

 * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY

 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A

 * PARTICULAR PURPOSE.

 *

 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES

 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR

 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,

 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY

 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL

 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.  THESE LIMITATIONS

 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY

 * LIMITED REMEDY.

 *

 * 4.3. Licensee shall not export, either directly or indirectly, any of this

 * software or system incorporating such software without first obtaining any

 * required license or other approval from the U. S. Department of Commerce or

 * any other agency or department of the United States Government.  In the

 * event Licensee exports any such software from the United States or

 * re-exports any such software from a foreign destination, Licensee shall

 * ensure that the distribution and export/re-export of the software is in

 * compliance with all laws, regulations, orders, or other restrictions of the

 * U.S. Export Administration Regulations. Licensee agrees that neither it nor

 * any of its subsidiaries will export/re-export any technical data, process,

 * software, or service, directly or indirectly, to any country for which the

 * United States government or any agency thereof requires an export license,

 * other governmental approval, or letter of assurance, without first obtaining

 * such license, approval or letter.

 *

 *****************************************************************************/

#include "aslcompiler.h"

#define _COMPONENT          ACPI_COMPILER

        ACPI_MODULE_NAME    ("asluuid")

/*

 * UUID support functions.

 *

 * This table is used to convert an input UUID ascii string to a 16 byte

 * buffer and the reverse. The table maps a UUID buffer index 0-15 to

 * the index within the 36-byte UUID string where the associated 2-byte

 * hex value can be found.

 *

 * 36-byte UUID strings are of the form:

 *     aabbccdd-eeff-gghh-iijj-kkllmmnnoopp

 * Where aa-pp are one byte hex numbers, made up of two hex digits

 *

 * Note: This table is basically the inverse of the string-to-offset table

 * found in the ACPI spec in the description of the ToUUID macro.

 */

static UINT8    Gbl_MapToUuidOffset[16] =

{

    6,4,2,0,11,9,16,14,19,21,24,26,28,30,32,34

};

#define UUID_BUFFER_LENGTH          16

#define UUID_STRING_LENGTH          36

/* Positions for required hyphens (dashes) in UUID strings */

#define UUID_HYPHEN1_OFFSET         8

#define UUID_HYPHEN2_OFFSET         13

#define UUID_HYPHEN3_OFFSET         18

#define UUID_HYPHEN4_OFFSET         23

/*******************************************************************************

 *

 * FUNCTION:    AuValiduateUuid

 *

 * PARAMETERS:  InString            - 36-byte formatted UUID string

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Check all 36 characters for correct format

 *

 ******************************************************************************/

ACPI_STATUS

AuValidateUuid (

    char                    *InString)

{

    UINT32                  i;

    if (!InString || (ACPI_STRLEN (InString) != UUID_STRING_LENGTH))

    {

        return (AE_BAD_PARAMETER);

    }

    /* Check all 36 characters for correct format */

    for (i = 0; i < UUID_STRING_LENGTH; i++)

    {

        /* Must have 4 hyphens (dashes) in these positions: */

        if ((i == UUID_HYPHEN1_OFFSET) ||

            (i == UUID_HYPHEN2_OFFSET) ||

            (i == UUID_HYPHEN3_OFFSET) ||

            (i == UUID_HYPHEN4_OFFSET))

        {

            if (InString[i] != '-')

            {

                return (AE_BAD_PARAMETER);

            }

        }

        /* All other positions must contain hex digits */

        else

        {

            if (!isxdigit ((int) InString[i]))

            {

                return (AE_BAD_PARAMETER);

            }

        }

    }

    return (AE_OK);

}

/*******************************************************************************

 *

 * FUNCTION:    AuConvertStringToUuid

 *

 * PARAMETERS:  InString            - 36-byte formatted UUID string

 *              UuidBuffer          - 16-byte UUID buffer

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Convert 36-byte formatted UUID string to 16-byte UUID buffer

 *

 ******************************************************************************/

ACPI_STATUS

AuConvertStringToUuid (

    char                    *InString,

    char                    *UuidBuffer)

{

    UINT32                  i;

    if (!InString || !UuidBuffer)

    {

        return (AE_BAD_PARAMETER);

    }

    for (i = 0; i < UUID_BUFFER_LENGTH; i++)

    {

        UuidBuffer[i]  = (char) (UtHexCharToValue (InString[Gbl_MapToUuidOffset[i]]) << 4);

        UuidBuffer[i] |= (char)  UtHexCharToValue (InString[Gbl_MapToUuidOffset[i] + 1]);

    }

    return (AE_OK);

}

/*******************************************************************************

 *

 * FUNCTION:    AuConvertUuidToString

 *

 * PARAMETERS:  UuidBuffer          - 16-byte UUID buffer

 *              OutString           - 36-byte formatted UUID string

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Convert 16-byte UUID buffer to 36-byte formatted UUID string

 *              OutString must be 37 bytes to include null terminator.

 *

 ******************************************************************************/

ACPI_STATUS

AuConvertUuidToString (

    char                    *UuidBuffer,

    char                    *OutString)

{

    UINT32                  i;

    if (!UuidBuffer || !OutString)

    {

        return (AE_BAD_PARAMETER);

    }

    for (i = 0; i < UUID_BUFFER_LENGTH; i++)

    {

        OutString[Gbl_MapToUuidOffset[i]] =     (UINT8) AslHexLookup[(UuidBuffer[i] >> 4) & 0xF];

        OutString[Gbl_MapToUuidOffset[i] + 1] = (UINT8) AslHexLookup[UuidBuffer[i] & 0xF];

    }

    /* Insert required hyphens (dashes) */

    OutString[UUID_HYPHEN1_OFFSET] =

    OutString[UUID_HYPHEN2_OFFSET] =

    OutString[UUID_HYPHEN3_OFFSET] =

    OutString[UUID_HYPHEN4_OFFSET] = '-';

    OutString[UUID_STRING_LENGTH] = 0; /* Null terminate */

    return (AE_OK);

}