registry.c

ReactOS是一些高手根据Windows XP的内核编写出的类XP。内核实现机理和API函数调用几乎相同。甚至可以兼容XP的程序。喜欢研究系统内核的人可以看一看。

                     0,
                     Type,
                     (PVOID)Data,
                     Size);
#else
      RegSetValueExW(KeyHandle, ValueName, 0, Type, (const UCHAR*)Data, Size);
#endif

      RtlFreeHeap (ProcessHeap, 0, Data);
    }

  return TRUE;
}

#ifdef __REACTOS__
NTSTATUS
CreateNestedKey (PHANDLE KeyHandle,
                 ACCESS_MASK DesiredAccess,
                 POBJECT_ATTRIBUTES ObjectAttributes)
{
  OBJECT_ATTRIBUTES LocalObjectAttributes;
  UNICODE_STRING LocalKeyName;
  ULONG Disposition;
  NTSTATUS Status;
  ULONG FullNameLength;
  ULONG Length;
  PWCHAR Ptr;
  HANDLE LocalKeyHandle;

  Status = NtCreateKey (KeyHandle,
                        KEY_ALL_ACCESS,
                        ObjectAttributes,
                        0,
                        NULL,
                        0,
                        &Disposition);
  DPRINT("NtCreateKey(%wZ) called (Status %lx)\n", ObjectAttributes->ObjectName, Status);
  if (Status != STATUS_OBJECT_NAME_NOT_FOUND)
    return Status;

  /* Copy object attributes */
  RtlCopyMemory (&LocalObjectAttributes,
                 ObjectAttributes,
                 sizeof(OBJECT_ATTRIBUTES));
  RtlCreateUnicodeString (&LocalKeyName,
                          ObjectAttributes->ObjectName->Buffer);
  LocalObjectAttributes.ObjectName = &LocalKeyName;
  FullNameLength = LocalKeyName.Length / sizeof(WCHAR);

  /* Remove the last part of the key name and try to create the key again. */
  while (Status == STATUS_OBJECT_NAME_NOT_FOUND)
    {
      Ptr = wcsrchr (LocalKeyName.Buffer, '\\');
      if (Ptr == NULL || Ptr == LocalKeyName.Buffer)
        {
          Status = STATUS_UNSUCCESSFUL;
          break;
        }
      *Ptr = (WCHAR)0;
      LocalKeyName.Length = wcslen (LocalKeyName.Buffer) * sizeof(WCHAR);

      Status = NtCreateKey (&LocalKeyHandle,
                            KEY_ALL_ACCESS,
                            &LocalObjectAttributes,
                            0,
                            NULL,
                            0,
                            &Disposition);
      DPRINT("NtCreateKey(%wZ) called (Status %lx)\n", &LocalKeyName, Status);
    }

  if (!NT_SUCCESS(Status))
    {
      RtlFreeUnicodeString (&LocalKeyName);
      return Status;
    }

  /* Add removed parts of the key name and create them too. */
  Length = wcslen (LocalKeyName.Buffer);
  while (TRUE)
    {
      if (Length == FullNameLength)
        {
          Status = STATUS_SUCCESS;
          *KeyHandle = LocalKeyHandle;
          break;
        }
      NtClose (LocalKeyHandle);

      LocalKeyName.Buffer[Length] = L'\\';
      Length = wcslen (LocalKeyName.Buffer);
      LocalKeyName.Length = Length * sizeof(WCHAR);

      Status = NtCreateKey (&LocalKeyHandle,
                            KEY_ALL_ACCESS,
                            &LocalObjectAttributes,
                            0,
                            NULL,
                            0,
                            &Disposition);
      DPRINT("NtCreateKey(%wZ) called (Status %lx)\n", &LocalKeyName, Status);
      if (!NT_SUCCESS(Status))
        break;
    }

  RtlFreeUnicodeString (&LocalKeyName);

  return Status;
}
#endif

/***********************************************************************
 *            registry_callback
 *
 * Called once for each AddReg and DelReg entry in a given section.
 */
static BOOLEAN
registry_callback (HINF hInf, PCWSTR Section, BOOLEAN Delete)
{
  OBJECT_ATTRIBUTES ObjectAttributes;
  WCHAR Buffer[MAX_INF_STRING_LENGTH];
  UNICODE_STRING Name;
  UNICODE_STRING Value;
  PUNICODE_STRING ValuePtr;
  NTSTATUS Status;
  UINT Flags;
  ULONG Length;

  INFCONTEXT Context;
  HANDLE KeyHandle;
  BOOLEAN Ok;


  Ok = SetupFindFirstLineW (hInf, Section, NULL, &Context);

  if (Ok)
    {
      for (;Ok; Ok = SetupFindNextLine (&Context, &Context))
        {
          /* get root */
          if (!SetupGetStringFieldW (&Context, 1, Buffer, MAX_INF_STRING_LENGTH, NULL))
              continue;
          if (!GetRootKey (Buffer))
            continue;

          /* get key */
          Length = wcslen (Buffer);
          if (!SetupGetStringFieldW (&Context, 2, Buffer + Length, MAX_INF_STRING_LENGTH - Length, NULL))
            *Buffer = 0;

          DPRINT("KeyName: <%S>\n", Buffer);

          /* get flags */
          if (!SetupGetIntField (&Context, 4, (PINT)&Flags))
            Flags = 0;

          DPRINT("Flags: %lx\n", Flags);

#ifdef __REACTOS__
          RtlInitUnicodeString (&Name,
                                Buffer);

          InitializeObjectAttributes (&ObjectAttributes,
                                      &Name,
                                      OBJ_CASE_INSENSITIVE,
                                      NULL,
                                      NULL);

          if (Delete || (Flags & FLG_ADDREG_OVERWRITEONLY))
            {
              Status = NtOpenKey (&KeyHandle,
                                  KEY_ALL_ACCESS,
                                  &ObjectAttributes);
              if (!NT_SUCCESS(Status))
                {
                  DPRINT("NtOpenKey(%wZ) failed (Status %lx)\n", &Name, Status);
                  continue;  /* ignore if it doesn't exist */
                }
            }
          else
            {
              Status = CreateNestedKey (&KeyHandle,
                                        KEY_ALL_ACCESS,
                                        &ObjectAttributes);
              if (!NT_SUCCESS(Status))
                {
                  DPRINT("CreateNestedKey(%wZ) failed (Status %lx)\n", &Name, Status);
                  continue;
                }
            }
#else
          if (Delete || (Flags & FLG_ADDREG_OVERWRITEONLY))
             {
                LONG rc = RegOpenKeyW(NULL, Buffer, &KeyHandle);
                if (rc != ERROR_SUCCESS)
                  {
                    DPRINT("RegOpenKeyW(%S) failed (error %lu)\n", Buffer, rc);
                    continue; /* ignore if it doesn't exist */
                  }
              }
              else
              {
                  LONG rc = RegCreateKeyW(NULL, Buffer, &KeyHandle);
                  if (rc != ERROR_SUCCESS)
                  {
                    DPRINT("RegCreateKeyW(%S) failed (error %lu)\n", Buffer, rc);
                    continue;
                  }
              }
#endif

          /* get value name */
          if (SetupGetStringFieldW (&Context, 3, Buffer, MAX_INF_STRING_LENGTH, NULL))
            {
              RtlInitUnicodeString (&Value,
                                    Buffer);
              ValuePtr = &Value;
            }
          else
            {
              ValuePtr = NULL;
            }

          /* and now do it */
          if (!do_reg_operation (KeyHandle, ValuePtr, &Context, Flags))
            {
              NtClose (KeyHandle);
              return FALSE;
            }

#ifdef __REACTOS__
          NtClose (KeyHandle);
#endif
        }
    }

  return TRUE;
}


BOOLEAN
ImportRegistryFile(PWSTR Filename,
                   PWSTR Section,
                   BOOLEAN Delete)
{
  WCHAR FileNameBuffer[MAX_PATH];
  HINF hInf;
  UINT ErrorLine;

  /* Load inf file from install media. */
  wcscpy(FileNameBuffer, SourcePath.Buffer);
  wcscat(FileNameBuffer, L"\\");
  wcscat(FileNameBuffer, Filename);

  hInf = SetupOpenInfFileW(
                       FileNameBuffer,
                       NULL,
                       INF_STYLE_WIN4,
                       &ErrorLine);
  if (hInf == INVALID_HANDLE_VALUE)
    {
      DPRINT1("SetupOpenInfFile() failed\n");
      return FALSE;
    }

  if (!registry_callback (hInf, L"AddReg", FALSE))
    {
      DPRINT1("registry_callback() failed\n");
    }

  SetupCloseInfFile (hInf);

  return TRUE;
}


BOOLEAN
SetInstallPathValue(PUNICODE_STRING InstallPath)
{
  OBJECT_ATTRIBUTES ObjectAttributes;
  UNICODE_STRING KeyName = RTL_CONSTANT_STRING(L"\\Registry\\Machine\\HARDWARE");
  UNICODE_STRING ValueName = RTL_CONSTANT_STRING(L"InstallPath");
  HANDLE KeyHandle;
  NTSTATUS Status;

  /* Create the 'secret' InstallPath key */
  InitializeObjectAttributes (&ObjectAttributes,
                              &KeyName,
                              OBJ_CASE_INSENSITIVE,
                              NULL,
                              NULL);
  Status =  NtOpenKey (&KeyHandle,
                       KEY_ALL_ACCESS,
                       &ObjectAttributes);
  if (!NT_SUCCESS(Status))
    {
      DPRINT1("NtOpenKey() failed (Status %lx)\n", Status);
      return FALSE;
    }

  Status = NtSetValueKey (KeyHandle,
                          &ValueName,
                          0,
                          REG_SZ,
                          (PVOID)InstallPath->Buffer,
                          InstallPath->Length);
  NtClose(KeyHandle);
  if (!NT_SUCCESS(Status))
    {
      DPRINT1("NtSetValueKey() failed (Status %lx)\n", Status);
      return FALSE;
    }

  return TRUE;
}

BOOLEAN
SetMountedDeviceValue(CHAR Letter, ULONG Signature, LARGE_INTEGER StartingOffset)
{
  OBJECT_ATTRIBUTES ObjectAttributes;
  WCHAR ValueNameBuffer[16];
  UNICODE_STRING KeyName = RTL_CONSTANT_STRING(L"\\Registry\\Machine\\SYSTEM\\MountedDevices");
  UNICODE_STRING ValueName;
  REG_DISK_MOUNT_INFO MountInfo;
  NTSTATUS Status;
  HANDLE KeyHandle;

  swprintf(ValueNameBuffer, L"\\DosDevices\\%C:", Letter);
  RtlInitUnicodeString(&ValueName, ValueNameBuffer);

  InitializeObjectAttributes (&ObjectAttributes,
                              &KeyName,
                              OBJ_CASE_INSENSITIVE,
                              NULL,
                              NULL);
  Status =  NtOpenKey (&KeyHandle,
                       KEY_ALL_ACCESS,
                       &ObjectAttributes);
  if (!NT_SUCCESS(Status))
    {
      Status = NtCreateKey(&KeyHandle,
                           KEY_ALL_ACCESS,
                           &ObjectAttributes,
                           0,
                           NULL,
                           REG_OPTION_NON_VOLATILE,
                           NULL);
    }

  if (!NT_SUCCESS(Status))
    {
      DPRINT1("NtCreateKey() failed (Status %lx)\n", Status);
      return FALSE;
    }

  MountInfo.Signature = Signature;
  MountInfo.StartingOffset = StartingOffset;
  Status = NtSetValueKey (KeyHandle,
                          &ValueName,
                          0,
                          REG_BINARY,
                          (PVOID)&MountInfo,
                          sizeof(MountInfo));
  NtClose(KeyHandle);
  if (!NT_SUCCESS(Status))
    {
      DPRINT1("NtSetValueKey() failed (Status %lx)\n", Status);
      return FALSE;
    }

  return TRUE;
}

/* EOF */