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  2. Inno Setup Get progress from .NET Framework 4.5 (or higher) installer to update progress bar position

Inno Setup Get progress from .NET Framework 4.5 (or higher) installer to update progress bar position

由 冷暖自知 提交于 2019-11-27 21:44:37

The following shows Pascal Script implementation of the code from
How to: Get Progress from the .NET Framework 4.5 Installer

[Files]
Source: "NDP462-KB3151800-x86-x64-AllOS-ENU.exe"; Flags: dontcopy

[Code]

{ Change to unique names }    
const
  SectionName = 'MyProgSetup';
  EventName = 'MyProgSetupEvent';

const
  INFINITE = 65535;
  WAIT_OBJECT_0 = 0;
  WAIT_TIMEOUT = $00000102;
  FILE_MAP_WRITE = $0002;
  E_PENDING = $8000000A;
  S_OK = 0;
  MMIO_V45 = 1;
  MAX_PATH = 260;
  SEE_MASK_NOCLOSEPROCESS = $00000040;
  INVALID_HANDLE_VALUE = -1;
  PAGE_READWRITE = 4;
  MMIO_SIZE = 65536;

type
  TMmioDataStructure = record
    DownloadFinished: Boolean; { download done yet? }
    InstallFinished: Boolean; { install done yet? }
    DownloadAbort: Boolean; { set downloader to abort }
    InstallAbort: Boolean; { set installer to abort }
    DownloadFinishedResult: Cardinal; { resultant HRESULT for download }
    InstallFinishedResult: Cardinal; { resultant HRESULT for install }
    InternalError: Cardinal;
    CurrentItemStep: array[0..MAX_PATH-1] of WideChar;
    DownloadSoFar: Byte; { download progress 0 - 255 (0 to 100% done) }
    InstallSoFar: Byte; { install progress 0 - 255 (0 to 100% done) }
    { event that chainer 'creates' and chainee 'opens'to sync communications }
    EventName: array[0..MAX_PATH-1] of WideChar; 

    Version: Byte; { version of the data structure, set by chainer. }
                   { 0x0 : .Net 4.0 }
                   { 0x1 : .Net 4.5 }

    { current message being sent by the chainee, 0 if no message is active }
    MessageCode: Cardinal; 
    { chainer's response to current message, 0 if not yet handled }
    MessageResponse: Cardinal; 
    { length of the m_messageData field in bytes }
    MessageDataLength: Cardinal; 
    { variable length buffer, content depends on m_messageCode }
    MessageData: array[0..MMIO_SIZE] of Byte; 
  end;

function CreateFileMapping(
  File: THandle; Attributes: Cardinal; Protect: Cardinal;
  MaximumSizeHigh: Cardinal; MaximumSizeLow: Cardinal; Name: string): THandle;
  external 'CreateFileMappingW@kernel32.dll stdcall';

function CreateEvent(
  EventAttributes: Cardinal; ManualReset: Boolean; InitialState: Boolean;
  Name: string): THandle;
  external 'CreateEventW@kernel32.dll stdcall';

function CreateMutex(
  MutexAttributes: Cardinal; InitialOwner: Boolean; Name: string): THandle;
  external 'CreateMutexW@kernel32.dll stdcall';

function WaitForSingleObject(
  Handle: THandle; Milliseconds: Cardinal): Cardinal;
  external 'WaitForSingleObject@kernel32.dll stdcall';

function MapViewOfFile(
  FileMappingObject: THandle; DesiredAccess: Cardinal; FileOffsetHigh: Cardinal;
  FileOffsetLow: Cardinal; NumberOfBytesToMap: Cardinal): Cardinal;
  external 'MapViewOfFile@kernel32.dll stdcall';

function ReleaseMutex(Mutex: THandle): Boolean;
  external 'ReleaseMutex@kernel32.dll stdcall';

type
  TShellExecuteInfo = record
    cbSize: DWORD;
    fMask: Cardinal;
    Wnd: HWND;
    lpVerb: string;
    lpFile: string;
    lpParameters: string;
    lpDirectory: string;
    nShow: Integer;
    hInstApp: THandle;    
    lpIDList: DWORD;
    lpClass: string;
    hkeyClass: THandle;
    dwHotKey: DWORD;
    hMonitor: THandle;
    hProcess: THandle;
  end;

function ShellExecuteEx(var lpExecInfo: TShellExecuteInfo): BOOL; 
  external 'ShellExecuteExW@shell32.dll stdcall';

function GetExitCodeProcess(Process: THandle; var ExitCode: Cardinal): Boolean;
  external 'GetExitCodeProcess@kernel32.dll stdcall';

procedure CopyPointerToData(
  var Destination: TMmioDataStructure; Source: Cardinal; Length: Cardinal);
  external 'RtlMoveMemory@kernel32.dll stdcall';

procedure CopyDataToPointer(
  Destination: Cardinal; var Source: TMmioDataStructure; Length: Cardinal);
  external 'RtlMoveMemory@kernel32.dll stdcall';

var
  FileMapping: THandle;
  EventChaineeSend: THandle;
  EventChainerSend: THandle;
  Mutex: THandle;
  Data: TMmioDataStructure;
  View: Cardinal;

procedure LockDataMutex;
var
  R: Cardinal;
begin
  R := WaitForSingleObject(Mutex, INFINITE);
  Log(Format('WaitForSingleObject = %d', [Integer(R)]));
  if R <> WAIT_OBJECT_0 then
    RaiseException('Error waiting for mutex');
end;

procedure UnlockDataMutex;
var
  R: Boolean;
begin
  R := ReleaseMutex(Mutex);
  Log(Format('ReleaseMutex = %d', [Integer(R)]));
  if not R then
    RaiseException('Error releasing waiting for mutex');
end;

procedure ReadData;
begin
  CopyPointerToData(Data, View, MMIO_SIZE);
end;

procedure WriteData;
begin
  CopyDataToPointer(View, Data, MMIO_SIZE);
end;

procedure InitializeChainer;
var
  I: Integer;
begin
  Log('Initializing chainer');  

  FileMapping :=
    CreateFileMapping(
      INVALID_HANDLE_VALUE, 0, PAGE_READWRITE, 0, MMIO_SIZE, SectionName);
  Log(Format('FileMapping = %d', [Integer(FileMapping)]));
  if FileMapping = 0 then
    RaiseException('Error creating file mapping'); 

  EventChaineeSend := CreateEvent(0, False, False, EventName);
  Log(Format('EventChaineeSend = %d', [Integer(EventChaineeSend)]));
  if EventChaineeSend = 0 then
    RaiseException('Error creating chainee event'); 

  EventChainerSend := CreateEvent(0, False, False, EventName + '_send');
  Log(Format('EventChainerSend = %d', [Integer(EventChainerSend)]));
  if EventChainerSend = 0 then
    RaiseException('Error creating chainer event'); 

  Mutex := CreateMutex(0, False, EventName + '_mutex');
  Log(Format('Mutex = %d', [Integer(Mutex)]));
  if Mutex = 0 then
    RaiseException('Error creating mutex'); 

  View :=
    MapViewOfFile(FileMapping, FILE_MAP_WRITE, 0, 0, 0);
  if View = 0 then
    RaiseException('Cannot map data view');
  Log('Mapped data view');

  LockDataMutex;

  ReadData;

  Log('Initializing data');  
  for I := 1 to Length(EventName) do
    Data.EventName[I - 1] := EventName[I];
  Data.EventName[Length(EventName)] := #$00;

  { Download specific data }
  Data.DownloadFinished := False;
  Data.DownloadSoFar := 0;
  Data.DownloadFinishedResult := E_PENDING;
  Data.DownloadAbort := False;

  { Install specific data }
  Data.InstallFinished := False;
  Data.InstallSoFar := 0;
  Data.InstallFinishedResult := E_PENDING;
  Data.InstallAbort := False;

  Data.InternalError := S_OK;

  Data.Version := MMIO_V45;
  Data.MessageCode := 0;
  Data.MessageResponse := 0;
  Data.MessageDataLength := 0;

  Log('Initialized data');  

  WriteData;

  UnlockDataMutex;

  Log('Initialized chainer');  
end;

var
  ProgressPage: TOutputProgressWizardPage;

procedure InstallNetFramework;
var
  R: Cardinal;
  ExecInfo: TShellExecuteInfo;
  ExitCode: Cardinal;
  InstallError: string;
  Completed: Boolean;
  Progress: Integer;
begin
  ExtractTemporaryFile('NDP462-KB3151800-x86-x64-AllOS-ENU.exe');

  { Start the installer using ShellExecuteEx to get process ID }
  ExecInfo.cbSize := SizeOf(ExecInfo);
  ExecInfo.fMask := SEE_MASK_NOCLOSEPROCESS;
  ExecInfo.Wnd := 0;
  ExecInfo.lpFile := ExpandConstant('{tmp}\NDP462-KB3151800-x86-x64-AllOS-ENU.exe');
  ExecInfo.lpParameters := '/pipe ' + SectionName + ' /chainingpackage mysetup /q';
  ExecInfo.nShow := SW_HIDE;

  if not ShellExecuteEx(ExecInfo) then
    RaiseException('Cannot start .NET framework installer');

  Log(Format('.NET framework installer started as process %x', [ExecInfo.hProcess]));

  Progress := 0;
  { Displaying indefinite progress while the framework installer is initializing }
  ProgressPage.ProgressBar.Style := npbstMarquee;
  ProgressPage.SetProgress(Progress, 100);
  ProgressPage.Show;
  try
    Completed := False;

    while not Completed do
    begin
      { Check if the installer process has finished already }
      R := WaitForSingleObject(ExecInfo.hProcess, 0);
      if R = WAIT_OBJECT_0 then
      begin
        Log('.NET framework installer completed');
        Completed := True;
        if not GetExitCodeProcess(ExecInfo.hProcess, ExitCode) then
        begin
          InstallError := 'Cannot get .NET framework installer exit code';
        end
          else
        begin
          Log(Format('Exit code: %d', [Integer(ExitCode)]));
          if ExitCode <> 0 then
          begin
            InstallError :=
              Format('.NET framework installer failed with exit code %d', [ExitCode]);
          end;
        end;
      end
        else
      if R <> WAIT_TIMEOUT then
      begin
        InstallError := 'Error waiting for .NET framework installer to complete';
        Completed := True;
      end
        else
      begin
        { Check if the installer process has signaled progress event }
        R := WaitForSingleObject(EventChaineeSend, 0);
        if R = WAIT_OBJECT_0 then
        begin  
          Log('Got event from the installer');
          { Read progress data }
          LockDataMutex;
          ReadData;
          Log(Format(
            'DownloadSoFar = %d, InstallSoFar = %d', [
              Data.DownloadSoFar, Data.InstallSoFar]));
          Progress := Integer(Data.InstallSoFar) * 100 div 255;
          Log(Format('Progress = %d', [Progress]));
          UnlockDataMutex;
          { Once we get any progress data, switch to definite progress display }
          ProgressPage.ProgressBar.Style := npbstNormal;
          ProgressPage.SetProgress(Progress, 100);
        end
          else
        if R <> WAIT_TIMEOUT then
        begin
          InstallError := 'Error waiting for .NET framework installer event';
          Completed := True;
        end
          else
        begin
          { Seemingly pointless as progress did not change, }
          { but it pumps a message queue as a side effect }
          ProgressPage.SetProgress(Progress, 100);
          Sleep(100);
        end;
      end;
    end;
  finally
    ProgressPage.Hide;
  end;

  if InstallError <> '' then
  begin 
    { RaiseException does not work properly while TOutputProgressWizardPage is shown }
    RaiseException(InstallError);
  end;
end;

function InitializeSetup(): Boolean;
begin
  InitializeChainer;

  Result := True;
end;

procedure InitializeWizard();
begin
  ProgressPage := CreateOutputProgressPage('Installing .NET framework', '');
end;

You can use it like below, or on any other place of your installer process.

function NextButtonClick(CurPageID: Integer): Boolean;
begin
  Result := True;

  if CurPageID = wpReady then
  begin
    try
      InstallNetFramework;
    except
      MsgBox(GetExceptionMessage, mbError, MB_OK);
      Result := False;
    end;
  end;
end;

The following screenshot shows how the "progress page" in Inno Setup is linked to the .NET framework installer (of course the .NET framework installer is hidden by the /q switch, it was just temporarily shown for purposes of obtaining the screenshot).

I've successfully tested the code on

Note that the code takes into account the InstallSoFar only as both installers above are off-line. For on-line installers, DownloadSoFar should be taken into account too. And actually even off-line installers do sometime download something.

The ShellExecuteEx code taken from Inno Setup Exec() function Wait for a limited time.

标签
inno-setup
pascalscript
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