696 lines
15 KiB
C
696 lines
15 KiB
C
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/*++
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Copyright (c) 1996 Microsoft Corporation
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Module Name:
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memdbex.c
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Abstract:
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Extensions to use the memdb tree like a relational database
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Author:
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Jim Schmidt (jimschm) 2-Dec-1996
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Revision History:
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jimschm 23-Sep-1998 Expanded user flags to 24 bits (from
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12 bits), removed AnsiFromUnicode
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jimschm 21-Oct-1997 Cleaned up a little
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marcw 09-Apr-1997 Added MemDbGetOffset* functions.
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jimschm 17-Jan-1997 All string params can be NULL now
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jimschm 18-Dec-1996 Added GetEndpointValue functions
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--*/
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#include "pch.h"
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#include "memdbp.h"
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VOID
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MemDbBuildKeyA (
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OUT PSTR Buffer,
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IN PCSTR Category,
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IN PCSTR Item,
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IN PCSTR Field,
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IN PCSTR Data
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)
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{
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PSTR p;
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static CHAR Wack[] = "\\";
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p = Buffer;
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*p = 0;
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if (Category)
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p = _mbsappend (p, Category);
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if (Item) {
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if (p != Buffer)
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p = _mbsappend (p, Wack);
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p = _mbsappend (p, Item);
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}
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if (Field) {
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if (p != Buffer)
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p = _mbsappend (p, Wack);
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p = _mbsappend (p, Field);
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}
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if (Data) {
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if (p != Buffer)
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p = _mbsappend (p, Wack);
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p = _mbsappend (p, Data);
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}
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}
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VOID
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MemDbBuildKeyW (
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OUT PWSTR Buffer,
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IN PCWSTR Category,
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IN PCWSTR Item,
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IN PCWSTR Field,
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IN PCWSTR Data
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)
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{
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PWSTR p;
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static WCHAR Wack[] = L"\\";
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p = Buffer;
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*p = 0;
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if (Category)
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p = _wcsappend (p, Category);
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if (Item) {
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if (p != Buffer)
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p = _wcsappend (p, Wack);
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p = _wcsappend (p, Item);
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}
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if (Field) {
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if (p != Buffer)
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p = _wcsappend (p, Wack);
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p = _wcsappend (p, Field);
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}
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if (Data) {
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if (p != Buffer)
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p = _wcsappend (p, Wack);
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p = _wcsappend (p, Data);
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}
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}
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BOOL
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MemDbSetValueExA (
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IN PCSTR Category,
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IN PCSTR Item, OPTIONAL
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IN PCSTR Field, OPTIONAL
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IN PCSTR Data, OPTIONAL
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IN DWORD Val,
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OUT PDWORD Offset OPTIONAL
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)
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{
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CHAR Key[MEMDB_MAX];
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MemDbBuildKeyA (Key, Category, Item, Field, Data);
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return PrivateMemDbSetValueA (Key, Val, 0, 0, Offset);
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}
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BOOL
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MemDbSetValueExW (
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IN PCWSTR Category,
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IN PCWSTR Item, OPTIONAL
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IN PCWSTR Field, OPTIONAL
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IN PCWSTR Data, OPTIONAL
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IN DWORD Val,
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OUT PDWORD Offset OPTIONAL
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)
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{
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WCHAR Key[MEMDB_MAX];
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MemDbBuildKeyW (Key, Category, Item, Field, Data);
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return PrivateMemDbSetValueW (Key, Val, 0, 0, Offset);
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}
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BOOL
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MemDbSetBinaryValueExA (
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IN PCSTR Category,
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IN PCSTR Item, OPTIONAL
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IN PCSTR Field, OPTIONAL
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IN PCBYTE BinaryData,
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IN DWORD DataSize,
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OUT PDWORD Offset OPTIONAL
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)
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{
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CHAR Key[MEMDB_MAX];
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MemDbBuildKeyA (Key, Category, Item, Field, NULL);
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return PrivateMemDbSetBinaryValueA (Key, BinaryData, DataSize, Offset);
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}
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BOOL
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MemDbSetBinaryValueExW (
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IN PCWSTR Category,
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IN PCWSTR Item, OPTIONAL
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IN PCWSTR Field, OPTIONAL
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IN PCBYTE BinaryData,
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IN DWORD DataSize,
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OUT PDWORD Offset OPTIONAL
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)
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{
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WCHAR Key[MEMDB_MAX];
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MemDbBuildKeyW (Key, Category, Item, Field, NULL);
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return PrivateMemDbSetBinaryValueW (Key, BinaryData, DataSize, Offset);
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}
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/*++
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Routine Description:
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MemDbBuildKeyFromOffset and MemDbBuildKeyFromOffsetEx create a key
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string given the offset to the key, copying the string into the
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supplied buffer. If a value pointer or user flag pointer is
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provided, it is filled with the value or flag stored at the offset.
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These functions also allow trimming from the beginning of the string.
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By specifying a start level, the function will skip a number of
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levels before building the string. For example, if an offset points
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to the string mycat\foo\bar, and StartLevel is 1, the function will
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return foo\bar in Buffer.
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Arguments:
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Offset - Specifies the offset to the key as returned by MemDbSetValueEx.
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Buffer - Specifies a MEMDB_MAX buffer.
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StartLevel - Specifies a zero-based starting level, where zero represents
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the complete string, one represents the string starting after
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the first backslash, and so on.
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ValPtr - Specifies a variable that receives the value stored for the key
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Return Value:
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TRUE if the offset is valid and the function completed successfully, or
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FALSE if the offset is not valid or an internal memory corruption was detected.
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--*/
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BOOL
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MemDbBuildKeyFromOffsetA (
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IN DWORD Offset,
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OUT PSTR Buffer, OPTIONAL
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IN DWORD StartLevel,
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OUT PDWORD ValPtr OPTIONAL
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)
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{
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WCHAR WideBuffer[MEMDB_MAX];
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BOOL b;
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b = MemDbBuildKeyFromOffsetW (
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Offset,
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WideBuffer,
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StartLevel,
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ValPtr
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);
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if (b) {
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KnownSizeWtoA (Buffer, WideBuffer);
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}
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return b;
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}
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BOOL
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MemDbBuildKeyFromOffsetW (
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IN DWORD Offset,
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OUT PWSTR Buffer, OPTIONAL
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IN DWORD StartLevel,
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OUT PDWORD ValPtr OPTIONAL
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)
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{
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return MemDbBuildKeyFromOffsetExW (
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Offset,
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Buffer,
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NULL,
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StartLevel,
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ValPtr,
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NULL
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);
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}
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/*++
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Routine Description:
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MemDbBuildKeyFromOffset and MemDbBuildKeyFromOffsetEx create a key
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string given the offset to the key, copying the string into the
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supplied buffer. If a value pointer or user flag pointer is
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provided, it is filled with the value or flag stored at the offset.
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These functions also allow trimming from the beginning of the string.
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By specifying a start level, the function will skip a number of
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levels before building the string. For example, if an offset points
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to the string mycat\foo\bar, and StartLevel is 1, the function will
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return foo\bar in Buffer.
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Arguments:
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Offset - Specifies the offset to the key as returned by MemDbSetValueEx.
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Buffer - Specifies a MEMDB_MAX buffer.
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BufferLen - Receives the length of the string in characters, excluding the
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terminating nul. If caller is using this for buffer allocation
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size, double BufferLen.
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StartLevel - Specifies a zero-based starting level, where zero represents
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the complete string, one represents the string starting after
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the first backslash, and so on.
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ValPtr - Specifies a variable that receives the value stored for the key
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UserFlagPtr - Specifies a variable that receives the user flags stored for the
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key
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Return Value:
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TRUE if the offset is valid and the function completed successfully, or
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FALSE if the offset is not valid or an internal memory corruption was detected.
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--*/
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BOOL
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MemDbBuildKeyFromOffsetExA (
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IN DWORD Offset,
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OUT PSTR Buffer, OPTIONAL
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OUT PDWORD BufferLen, OPTIONAL
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IN DWORD StartLevel,
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OUT PDWORD ValPtr, OPTIONAL
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OUT PDWORD UserFlagPtr OPTIONAL
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)
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{
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WCHAR WideBuffer[MEMDB_MAX];
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BOOL b;
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b = MemDbBuildKeyFromOffsetExW (
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Offset,
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WideBuffer,
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BufferLen,
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StartLevel,
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ValPtr,
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UserFlagPtr
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);
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if (b) {
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KnownSizeWtoA (Buffer, WideBuffer);
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}
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return b;
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}
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BOOL
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MemDbBuildKeyFromOffsetExW (
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IN DWORD Offset,
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OUT PWSTR Buffer, OPTIONAL
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OUT PDWORD BufferLen, OPTIONAL
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IN DWORD StartLevel,
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OUT PDWORD ValPtr, OPTIONAL
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OUT PDWORD UserFlagPtr OPTIONAL
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)
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{
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PWSTR p,s;
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BYTE newDb = (BYTE) (Offset >> RESERVED_BITS);
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if (Offset == INVALID_OFFSET) {
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return FALSE;
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}
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SelectDatabase (newDb);
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p = Buffer;
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if (newDb != 0) {
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if (StartLevel == 0) {
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if (Buffer) {
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s = g_db->Hive;
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while (*s) {
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*p++ = *s++;
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}
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*p++ = L'\\';
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}
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}
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else {
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StartLevel --;
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}
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}
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return PrivateBuildKeyFromOffset (
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StartLevel,
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Offset & OFFSET_MASK,
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p,
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ValPtr,
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UserFlagPtr,
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BufferLen
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);
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}
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BOOL
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MemDbEnumItemsA (
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OUT PMEMDB_ENUMA pEnum,
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IN PCSTR Category
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)
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{
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CHAR Pattern[MEMDB_MAX];
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if (!Category)
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return FALSE;
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wsprintfA (Pattern, "%s\\*", Category);
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return MemDbEnumFirstValueA (pEnum, Pattern, MEMDB_THIS_LEVEL_ONLY, NO_FLAGS);
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}
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BOOL
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MemDbEnumItemsW (
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OUT PMEMDB_ENUMW pEnum,
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IN PCWSTR Category
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)
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{
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WCHAR Pattern[MEMDB_MAX];
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if (!Category)
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return FALSE;
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wsprintfW (Pattern, L"%s\\*", Category);
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return MemDbEnumFirstValueW (pEnum, Pattern, MEMDB_THIS_LEVEL_ONLY, NO_FLAGS);
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}
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BOOL
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MemDbEnumFieldsA (
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OUT PMEMDB_ENUMA pEnum,
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IN PCSTR Category,
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IN PCSTR Item OPTIONAL
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)
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{
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CHAR Pattern[MEMDB_MAX];
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if (!Category)
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return MemDbEnumItemsA (pEnum, Item);
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if (!Item)
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return MemDbEnumItemsA (pEnum, Category);
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wsprintfA (Pattern, "%s\\%s\\*", Category, Item);
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return MemDbEnumFirstValueA (pEnum, Pattern, MEMDB_THIS_LEVEL_ONLY, NO_FLAGS);
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}
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BOOL
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MemDbEnumFieldsW (
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OUT PMEMDB_ENUMW pEnum,
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IN PCWSTR Category,
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IN PCWSTR Item OPTIONAL
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)
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{
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WCHAR Pattern[MEMDB_MAX];
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if (!Category)
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return MemDbEnumItemsW (pEnum, Item);
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if (!Item)
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return MemDbEnumItemsW (pEnum, Category);
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wsprintfW (Pattern, L"%s\\%s\\*", Category, Item);
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return MemDbEnumFirstValueW (pEnum, Pattern, MEMDB_THIS_LEVEL_ONLY, NO_FLAGS);
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}
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BOOL
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MemDbGetValueExA (
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OUT PMEMDB_ENUMA pEnum,
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IN PCSTR Category,
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IN PCSTR Item, OPTIONAL
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IN PCSTR Field OPTIONAL
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)
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{
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CHAR Pattern[MEMDB_MAX];
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MemDbBuildKeyA (Pattern, Category, Item, Field, NULL);
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if (*Pattern) {
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AppendWackA (Pattern);
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}
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StringCatA (Pattern, "*");
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return MemDbEnumFirstValueA (pEnum, Pattern, MEMDB_ALL_SUBLEVELS, MEMDB_ENDPOINTS_ONLY);
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}
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BOOL
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MemDbGetValueExW (
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OUT PMEMDB_ENUMW pEnum,
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IN PCWSTR Category,
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IN PCWSTR Item, OPTIONAL
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IN PCWSTR Field OPTIONAL
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)
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{
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WCHAR Pattern[MEMDB_MAX];
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MemDbBuildKeyW (Pattern, Category, Item, Field, NULL);
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if (*Pattern) {
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AppendWackW (Pattern);
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}
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StringCatW (Pattern, L"*");
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return MemDbEnumFirstValueW (pEnum, Pattern, MEMDB_ALL_SUBLEVELS, MEMDB_ENDPOINTS_ONLY);
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}
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BOOL
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MemDbGetEndpointValueA (
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IN PCSTR Pattern,
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IN PCSTR Item, OPTIONAL // used as the first variable arg to wsprintfA
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OUT PSTR Buffer
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)
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{
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CHAR Path[MEMDB_MAX];
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MEMDB_ENUMA memdb_enum;
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if (!Pattern) {
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if (!Item)
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return FALSE;
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StringCopyA (Path, Item);
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}
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else {
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if (!Item)
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StringCopyA (Path, Pattern);
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else
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wsprintfA (Path, Pattern, Item);
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}
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if (!MemDbEnumFirstValueA (&memdb_enum, Path,
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MEMDB_ALL_SUBLEVELS, MEMDB_ENDPOINTS_ONLY)) {
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Buffer[0] = 0;
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return FALSE;
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}
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||
|
StringCopyA (Buffer, memdb_enum.szName);
|
||
|
return TRUE;
|
||
|
|
||
|
|
||
|
}
|
||
|
|
||
|
|
||
|
BOOL
|
||
|
MemDbGetEndpointValueW (
|
||
|
IN PCWSTR Pattern,
|
||
|
IN PCWSTR Item, OPTIONAL
|
||
|
OUT PWSTR Buffer
|
||
|
)
|
||
|
{
|
||
|
WCHAR Path[MEMDB_MAX];
|
||
|
MEMDB_ENUMW memdb_enum;
|
||
|
|
||
|
if (!Pattern) {
|
||
|
if (!Item)
|
||
|
return FALSE;
|
||
|
|
||
|
StringCopyW (Path, Item);
|
||
|
}
|
||
|
else {
|
||
|
if (!Item)
|
||
|
StringCopyW (Path, Pattern);
|
||
|
else
|
||
|
wsprintfW (Path, Pattern, Item);
|
||
|
}
|
||
|
|
||
|
if (!MemDbEnumFirstValueW (&memdb_enum, Path,
|
||
|
MEMDB_ALL_SUBLEVELS, MEMDB_ENDPOINTS_ONLY)) {
|
||
|
Buffer[0] = 0;
|
||
|
return FALSE;
|
||
|
}
|
||
|
StringCopyW (Buffer, memdb_enum.szName);
|
||
|
return TRUE;
|
||
|
|
||
|
}
|
||
|
|
||
|
|
||
|
BOOL
|
||
|
MemDbGetEndpointValueExA (
|
||
|
IN PCSTR Category,
|
||
|
IN PCSTR Item, OPTIONAL
|
||
|
IN PCSTR Field, OPTIONAL
|
||
|
OUT PSTR Buffer
|
||
|
)
|
||
|
{
|
||
|
CHAR Path[MEMDB_MAX];
|
||
|
MEMDB_ENUMA memdb_enum;
|
||
|
|
||
|
MemDbBuildKeyA (Path, Category, Item, Field, NULL);
|
||
|
if (*Path) {
|
||
|
AppendWackA (Path);
|
||
|
}
|
||
|
StringCatA (Path, "*");
|
||
|
|
||
|
|
||
|
if (!MemDbEnumFirstValueA (&memdb_enum, Path,
|
||
|
MEMDB_ALL_SUBLEVELS, MEMDB_ENDPOINTS_ONLY)) {
|
||
|
Buffer[0] = 0;
|
||
|
return FALSE;
|
||
|
}
|
||
|
strcpy (Buffer, memdb_enum.szName);
|
||
|
return TRUE;
|
||
|
|
||
|
}
|
||
|
|
||
|
BOOL
|
||
|
MemDbGetEndpointValueExW (
|
||
|
IN PCWSTR Category,
|
||
|
IN PCWSTR Item, OPTIONAL
|
||
|
IN PCWSTR Field, OPTIONAL
|
||
|
OUT PWSTR Buffer
|
||
|
)
|
||
|
{
|
||
|
WCHAR Path[MEMDB_MAX];
|
||
|
MEMDB_ENUMW memdb_enum;
|
||
|
|
||
|
MemDbBuildKeyW (Path, Category, Item, Field, NULL);
|
||
|
if (*Path) {
|
||
|
AppendWackW (Path);
|
||
|
}
|
||
|
StringCatW (Path, L"*");
|
||
|
|
||
|
if (!MemDbEnumFirstValueW (&memdb_enum, Path,
|
||
|
MEMDB_ALL_SUBLEVELS, MEMDB_ENDPOINTS_ONLY)) {
|
||
|
Buffer[0] = 0;
|
||
|
return FALSE;
|
||
|
}
|
||
|
StringCopyW (Buffer, memdb_enum.szName);
|
||
|
return TRUE;
|
||
|
|
||
|
}
|
||
|
|
||
|
|
||
|
BOOL
|
||
|
MemDbGetOffsetW(
|
||
|
IN PCWSTR Key,
|
||
|
OUT PDWORD Offset
|
||
|
)
|
||
|
{
|
||
|
BOOL b;
|
||
|
DWORD keyOffset;
|
||
|
|
||
|
keyOffset = FindKey (Key);
|
||
|
if (keyOffset == INVALID_OFFSET) {
|
||
|
b = FALSE;
|
||
|
}
|
||
|
else {
|
||
|
b = TRUE;
|
||
|
*Offset = keyOffset;
|
||
|
}
|
||
|
|
||
|
return b;
|
||
|
}
|
||
|
|
||
|
|
||
|
BOOL
|
||
|
MemDbGetOffsetA (
|
||
|
IN PCSTR Key,
|
||
|
OUT PDWORD Offset
|
||
|
)
|
||
|
{
|
||
|
|
||
|
PCWSTR wstr;
|
||
|
BOOL b;
|
||
|
|
||
|
wstr = ConvertAtoW (Key);
|
||
|
if (wstr) {
|
||
|
b = MemDbGetOffsetW (wstr,Offset);
|
||
|
FreeConvertedStr (wstr);
|
||
|
}
|
||
|
else {
|
||
|
b = FALSE;
|
||
|
}
|
||
|
|
||
|
return b;
|
||
|
}
|
||
|
|
||
|
|
||
|
BOOL
|
||
|
MemDbGetOffsetExW (
|
||
|
IN PCWSTR Category,
|
||
|
IN PCWSTR Item, OPTIONAL
|
||
|
IN PCWSTR Field, OPTIONAL
|
||
|
IN PCWSTR Data, OPTIONAL
|
||
|
OUT PDWORD Offset OPTIONAL
|
||
|
)
|
||
|
{
|
||
|
WCHAR Key[MEMDB_MAX];
|
||
|
|
||
|
MemDbBuildKeyW(Key,Category,Item,Field,Data);
|
||
|
|
||
|
return MemDbGetOffsetW(Key,Offset);
|
||
|
}
|
||
|
|
||
|
|
||
|
BOOL
|
||
|
MemDbGetOffsetExA (
|
||
|
IN PCSTR Category,
|
||
|
IN PCSTR Item, OPTIONAL
|
||
|
IN PCSTR Field, OPTIONAL
|
||
|
IN PCSTR Data, OPTIONAL
|
||
|
OUT PDWORD Offset OPTIONAL
|
||
|
)
|
||
|
{
|
||
|
CHAR Key[MEMDB_MAX];
|
||
|
|
||
|
MemDbBuildKeyA(Key,Category,Item,Field,Data);
|
||
|
|
||
|
return MemDbGetOffsetA(Key,Offset);
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|