TechnitiumSoftware-DnsServer/DnsServerWindowsSetup/dotnet.iss

[Setup]
MinVersion=6.1sp1

// remove next line if you only deploy 32-bit binaries and dependencies
ArchitecturesInstallIn64BitMode=x64

// dependency installation requires ready page and ready memo to be enabled (default behaviour)
DisableReadyPage=no
DisableReadyMemo=no

// shared code for installing the dependencies
[Code]
// types and variables
type
  TDependency = record
    Filename: String;
    Parameters: String;
    Title: String;
    URL: String;
    Checksum: String;
    ForceSuccess: Boolean;
    InstallClean: Boolean;
    RebootAfter: Boolean;
  end;

  InstallResult = (InstallSuccessful, InstallRebootRequired, InstallError);

var
  MemoInstallInfo: String;
  Dependencies: array of TDependency;
  DelayedReboot, ForceX86: Boolean;
  DownloadPage: TDownloadWizardPage;

procedure AddDependency(const Filename, Parameters, Title, URL, Checksum: String; const ForceSuccess, InstallClean, RebootAfter: Boolean);
var
  Dependency: TDependency;
  I: Integer;
begin
  MemoInstallInfo := MemoInstallInfo + #13#10 + '%1' + Title;

  Dependency.Filename := Filename;
  Dependency.Parameters := Parameters;
  Dependency.Title := Title;

  if FileExists(ExpandConstant('{tmp}{\}') + Filename) then begin
    Dependency.URL := '';
  end else begin
    Dependency.URL := URL;
  end;

  Dependency.Checksum := Checksum;
  Dependency.ForceSuccess := ForceSuccess;
  Dependency.InstallClean := InstallClean;
  Dependency.RebootAfter := RebootAfter;

  I := GetArrayLength(Dependencies);
  SetArrayLength(Dependencies, I + 1);
  Dependencies[I] := Dependency;
end;

function IsPendingReboot: Boolean;
var
  Value: String;
begin
  Result := RegQueryMultiStringValue(HKEY_LOCAL_MACHINE, 'SYSTEM\CurrentControlSet\Control\Session Manager', 'PendingFileRenameOperations', Value) or
    (RegQueryMultiStringValue(HKEY_LOCAL_MACHINE, 'SYSTEM\CurrentControlSet\Control\Session Manager', 'SetupExecute', Value) and (Value <> ''));
end;

function InstallProducts: InstallResult;
var
  ResultCode, I, ProductCount: Integer;
begin
  Result := InstallSuccessful;
  ProductCount := GetArrayLength(Dependencies);
  MemoInstallInfo := SetupMessage(msgReadyMemoTasks);

  if ProductCount > 0 then begin
    DownloadPage.Show;

    for I := 0 to ProductCount - 1 do begin
      if Dependencies[I].InstallClean and (DelayedReboot or IsPendingReboot) then begin
        Result := InstallRebootRequired;
        break;
      end;

      DownloadPage.SetText(Dependencies[I].Title, '');
      DownloadPage.SetProgress(I + 1, ProductCount);

      while True do begin
        ResultCode := 0;
        if ShellExec('', ExpandConstant('{tmp}{\}') + Dependencies[I].Filename, Dependencies[I].Parameters, '', SW_SHOWNORMAL, ewWaitUntilTerminated, ResultCode) then begin
          if Dependencies[I].RebootAfter then begin
            // delay reboot after install if we installed the last dependency anyways
            if I = ProductCount - 1 then begin
              DelayedReboot := True;
            end else begin
              Result := InstallRebootRequired;
              MemoInstallInfo := Dependencies[I].Title;
            end;
            break;
          end else if (ResultCode = 0) or Dependencies[I].ForceSuccess then begin
            break;
          end else if ResultCode = 3010 then begin
            // Windows Installer ResultCode 3010: ERROR_SUCCESS_REBOOT_REQUIRED
            DelayedReboot := True;
            break;
          end;
        end;

        case SuppressibleMsgBox(FmtMessage(SetupMessage(msgErrorFunctionFailed), [Dependencies[I].Title, IntToStr(ResultCode)]), mbError, MB_ABORTRETRYIGNORE, IDIGNORE) of
          IDABORT: begin
            Result := InstallError;
            MemoInstallInfo := MemoInstallInfo + #13#10 + '      ' + Dependencies[I].Title;
            break;
          end;
          IDIGNORE: begin
            MemoInstallInfo := MemoInstallInfo + #13#10 + '      ' + Dependencies[I].Title;
            break;
          end;
        end;
      end;

      if Result <> InstallSuccessful then begin
        break;
      end;
    end;

    DownloadPage.Hide;
  end;
end;

// Inno Setup event functions
procedure InitializeWizard;
begin
  DownloadPage := CreateDownloadPage(SetupMessage(msgWizardPreparing), SetupMessage(msgPreparingDesc), nil);
end;

function PrepareToInstall(var NeedsRestart: Boolean): String;
begin
  DelayedReboot := False;

  case InstallProducts of
    InstallError: begin
      Result := MemoInstallInfo;
    end;
    InstallRebootRequired: begin
      Result := MemoInstallInfo;
      NeedsRestart := True;

      // write into the registry that the installer needs to be executed again after restart
      RegWriteStringValue(HKEY_CURRENT_USER, 'SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce', 'InstallBootstrap', ExpandConstant('{srcexe}'));
    end;
  end;
end;

function NeedRestart: Boolean;
begin
  Result := DelayedReboot;
end;

function UpdateReadyMemo(const Space, NewLine, MemoUserInfoInfo, MemoDirInfo, MemoTypeInfo, MemoComponentsInfo, MemoGroupInfo, MemoTasksInfo: String): String;
begin
  Result := '';
  if MemoUserInfoInfo <> '' then begin
    Result := Result + MemoUserInfoInfo + Newline + NewLine;
  end;
  if MemoDirInfo <> '' then begin
    Result := Result + MemoDirInfo + Newline + NewLine;
  end;
  if MemoTypeInfo <> '' then begin
    Result := Result + MemoTypeInfo + Newline + NewLine;
  end;
  if MemoComponentsInfo <> '' then begin
    Result := Result + MemoComponentsInfo + Newline + NewLine;
  end;
  if MemoGroupInfo <> '' then begin
    Result := Result + MemoGroupInfo + Newline + NewLine;
  end;
  if MemoTasksInfo <> '' then begin
    Result := Result + MemoTasksInfo;
  end;

  if MemoInstallInfo <> '' then begin
    if MemoTasksInfo = '' then begin
      Result := Result + SetupMessage(msgReadyMemoTasks);
    end;
    Result := Result + FmtMessage(MemoInstallInfo, [Space]);
  end;
end;

function NextButtonClick(const CurPageID: Integer): Boolean;
var
  I, ProductCount: Integer;
  Retry: Boolean;
begin
  Result := True;

  if (CurPageID = wpReady) and (MemoInstallInfo <> '') then begin
    DownloadPage.Show;

    ProductCount := GetArrayLength(Dependencies);
    for I := 0 to ProductCount - 1 do begin
      if Dependencies[I].URL <> '' then begin
        DownloadPage.Clear;
        DownloadPage.Add(Dependencies[I].URL, Dependencies[I].Filename, Dependencies[I].Checksum);

        Retry := True;
        while Retry do begin
          Retry := False;

          try
            DownloadPage.Download;
          except
            if GetExceptionMessage = SetupMessage(msgErrorDownloadAborted) then begin
              Result := False;
              I := ProductCount;
            end else begin
              case SuppressibleMsgBox(AddPeriod(GetExceptionMessage), mbError, MB_ABORTRETRYIGNORE, IDIGNORE) of
                IDABORT: begin
                  Result := False;
                  I := ProductCount;
                end;
                IDRETRY: begin
                  Retry := True;
                end;
              end;
            end;
          end;
        end;
      end;
    end;

    DownloadPage.Hide;
  end;
end;

// architecture helper functions
function IsX64: Boolean;
begin
  Result := not ForceX86 and Is64BitInstallMode;
end;

function GetString(const x86, x64: String): String;
begin
  if IsX64 then begin
    Result := x64;
  end else begin
    Result := x86;
  end;
end;

function GetArchitectureSuffix: String;
begin
  Result := GetString('', '_x64');
end;

function GetArchitectureTitle: String;
begin
  Result := GetString(' (x86)', ' (x64)');
end;

function CompareVersion(const Version1, Version2: String): Integer;
var
  Position, Number1, Number2: Integer;
begin
  Result := 0;
  while (Version1 <> '') or (Version2 <> '') do begin
    Position := Pos('.', Version1);
    if Position > 0 then begin
      Number1 := StrToIntDef(Copy(Version1, 1, Position - 1), 0);
      Delete(Version1, 1, Position);
    end else if Version1 <> '' then begin
      Number1 := StrToIntDef(Version1, 0);
      Version1 := '';
    end else begin
      Number1 := 0;
    end;

    Position := Pos('.', Version2);
    if Position > 0 then begin
      Number2 := StrToIntDef(Copy(Version2, 1, Position - 1), 0);
      Delete(Version2, 1, Position);
    end else if Version2 <> '' then begin
      Number2 := StrToIntDef(Version2, 0);
      Version2 := '';
    end else begin
      Number2 := 0;
    end;

    if Number1 < Number2 then begin
      Result := -1;
      break;
    end else if Number1 > Number2 then begin
      Result := 1;
      break;
    end;
  end;
end;








{ Check if dotnet is installed }
function IsDotNetDesktopInstalled: Boolean;
var
  ResultCode: Integer;
begin
  Result := false;
  Exec('cmd.exe', '/c dotnet --list-runtimes | find /n "Microsoft.WindowsDesktop.App 6.0."', '', SW_HIDE, ewWaitUntilTerminated, ResultCode);
  if ResultCode = 0 then 
  begin 
    Result := true;
  end;
end;

{ if dotnet is not installed then add it for download }
procedure CheckDotnetDependency;
begin
  if not IsDotNetDesktopInstalled then
  begin
    AddDependency('dotnet60desktop' + GetArchitectureSuffix + '.exe',
      '/lcid ' + IntToStr(GetUILanguage) + ' /passive /norestart',
      '.NET Desktop Runtime 6.0.4' + GetArchitectureTitle,
      GetString('https://download.visualstudio.microsoft.com/download/pr/05b30243-5cd2-48c3-a9bb-6ac83d7d481b/03a25aecb5cf4ba53c8b9cf5194e3c86/windowsdesktop-runtime-6.0.4-win-x86.exe', 'https://download.visualstudio.microsoft.com/download/pr/f13d7b5c-608f-432b-b7ec-8fe84f4030a1/5e06998f9ce23c620b9d6bac2dae6c1d/windowsdesktop-runtime-6.0.4-win-x64.exe'),
      '', False, False, False);
  end;
end;