/*++

Copyright (c) 1991  Microsoft Corporation

Module Name:

    rtreplac.c

Abstract:

    NT level registry api test program, basic non-error paths.

    Perform an NtReplaceKey call to replace a registry hive.

    rtreplac  <KeyPath> <NewHiveName> <BackupOldHiveName>

    Example:

        rtreplac \registry\machine\user newuser olduser

Author:

    John Vert (jvert) 8-May-1992

Revision History:

--*/
#include <nt.h>
#include <ntrtl.h>
#include <nturtl.h>

#include "cmp.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define WORK_SIZE   1024

void __cdecl main(int, char *);
void processargs();

UNICODE_STRING  KeyPath;
WCHAR           KeyPathBuffer[WORK_SIZE];

UNICODE_STRING  NewName;
WCHAR           NewNameBuffer[WORK_SIZE];
UNICODE_STRING  OldName;
WCHAR           OldNameBuffer[WORK_SIZE];

void
__cdecl main(
    int argc,
    char *argv[]
    )
{
    NTSTATUS status;
    OBJECT_ATTRIBUTES NewAttributes;
    OBJECT_ATTRIBUTES OldAttributes;
    OBJECT_ATTRIBUTES ObjectAttributes;
    IO_STATUS_BLOCK  IoStatus;
    HANDLE  FileHandle;
    HANDLE  KeyHandle;
    BOOLEAN WasEnabled;

    //
    // Process args
    //

    KeyPath.MaximumLength = WORK_SIZE;
    KeyPath.Length = 0L;
    KeyPath.Buffer = &(KeyPathBuffer[0]);

    NewName.MaximumLength = WORK_SIZE;
    NewName.Length = 0L;
    NewName.Buffer = &(NewNameBuffer[0]);

    OldName.MaximumLength = WORK_SIZE;
    OldName.Length = 0L;
    OldName.Buffer = &(OldNameBuffer[0]);

    processargs(argc, argv);

    //
    // Set up and open FileName
    //

    printf("rtreplac: starting\n");

    InitializeObjectAttributes(
        &NewAttributes,
        &NewName,
        OBJ_CASE_INSENSITIVE,
        (HANDLE)NULL,
        NULL
        );

    InitializeObjectAttributes(
        &OldAttributes,
        &OldName,
        OBJ_CASE_INSENSITIVE,
        (HANDLE)NULL,
        NULL
        );

    InitializeObjectAttributes(
        &ObjectAttributes,
        &KeyPath,
        OBJ_CASE_INSENSITIVE,
        (HANDLE)NULL,
        NULL
        );

    status = NtOpenKey(
                &KeyHandle,
                MAXIMUM_ALLOWED,
                &ObjectAttributes
                );
    if (!NT_SUCCESS(status)) {
        printf("rtreplac: key open failed status = %08lx\n", status);
        exit(1);
    }

    RtlAdjustPrivilege(SE_RESTORE_PRIVILEGE, TRUE, FALSE, &WasEnabled);
    status = NtReplaceKey(&NewAttributes,
                          KeyHandle,
                          &OldAttributes);
    RtlAdjustPrivilege(SE_RESTORE_PRIVILEGE, WasEnabled, FALSE, &WasEnabled);

    if (!NT_SUCCESS(status)) {
        printf("rtreplac: NtReplaceKey failed status = %08lx\n", status);
        exit(1);
    }

    printf("rtreplac: success\n");
    exit(0);
}

void
processargs(
    int argc,
    char *argv[]
    )
{
    ANSI_STRING temp;
    UNICODE_STRING DosFileName;

    if ( (argc != 4) )
    {
        printf("Usage: %s <KeyName> <NewFileName> <OldFileName>\n",
                argv[0]);
        exit(1);
    }

    RtlInitAnsiString(
        &temp,
        argv[1]
        );

    RtlAnsiStringToUnicodeString(
        &KeyPath,
        &temp,
        TRUE
        );

    RtlInitAnsiString(
        &temp,
        argv[2]
        );

    RtlAnsiStringToUnicodeString(
        &DosFileName,
        &temp,
        TRUE
        );

    RtlDosPathNameToNtPathName_U( DosFileName.Buffer,
                                  &NewName,
                                  NULL,
                                  NULL );

    RtlInitAnsiString(
        &temp,
        argv[3]
        );

    RtlAnsiStringToUnicodeString(
        &DosFileName,
        &temp,
        TRUE
        );

    RtlDosPathNameToNtPathName_U( DosFileName.Buffer,
                                  &OldName,
                                  NULL,
                                  NULL );

    return;
}