Pascal (Lazarus/Delphi)

Using Client Certificate w/ IMAP SSL

Demonstrates how to use a client-side certificate with an IMAP SSL connection. The SetSslClientCert method is called to specify a certificate to be used for the SSL connection. Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.MessageSet,
  Chilkat.Imap,
  Chilkat.EmailBundle,
  Chilkat.Email,
  Chilkat.CertStore,
  Chilkat.JsonObject,
  Chilkat.Cert;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  imap: TImap;
  certStore: TCertStore;
  jsonCN: TJsonObject;
  cert: TCert;
  cert2: TCert;
  fetchUids: Boolean;
  messageSet: TMessageSet;
  bundle: TEmailBundle;
  headersOnly: Boolean;
  email: TEmail;
  i: Integer;
  numEmails: Integer;

begin
  success := False;

  //  This example assumes the Chilkat API to have been previously unlocked.
  //  See Global Unlock Sample for sample code.

  imap := TImap.Create;

  //  To use a secure SSL connection, set SSL and the port:
  imap.Ssl := True;
  //  The typical port for IMAP SSL is 993
  imap.Port := 993;

  //  Load a certificate from a PFX file and use it.
  //  Note: Other methods are available to load pre-installed
  //  certificates from registry-based certificate stores.

  //  Create an instance of a certificate store object, load a PFX file,
  //  locate the certificate we need, and use it for signing.
  //  (a PFX file may contain more than one certificate.)
  certStore := TCertStore.Create;
  //  The 1st argument is the filename, the 2nd arg is the 
  //  PFX file's password:
  success := certStore.LoadPfxFile('myCertWithPrivateKey.pfx','secret');
  if (success = False) then
    begin
      WriteLn(certStore.LastErrorText);
      Exit;
    end;

  //  Find the certificate by the subject common name:
  jsonCN := TJsonObject.Create;
  jsonCN.UpdateString('CN','cert common name');

  cert := TCert.Create;
  success := certStore.FindCert(jsonCN,cert);
  if (success = False) then
    begin
      WriteLn(certStore.LastErrorText);
      Exit;
    end;

  //  If a PFX file is known to contain a single certificate,
  //  you may load it directly into a Chilkat certificate object.
  //  This snippet of source code shows how:
  cert2 := TCert.Create;
  //  The 1st argument is the filename, the 2nd arg is the 
  //  PFX file's password:
  success := cert2.LoadPfxFile('myClientCert.pfx','secret');
  if (success = False) then
    begin
      WriteLn(cert.LastErrorText);
      Exit;
    end;

  //  Use the cert:
  success := imap.SetSslClientCert(cert);

  //  Connect to an IMAP server.
  success := imap.Connect('imap.example.com');
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  //  Login
  success := imap.Login('myLogin','myPassword');
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  //  Select an IMAP mailbox
  success := imap.SelectMailbox('Inbox');
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  //  Get the message IDs of all the emails in the mailbox
  fetchUids := True;
  messageSet := TMessageSet.Create;
  success := imap.QueryMbx('ALL',fetchUids,messageSet);
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  //  Fetch the emails into a bundle object:
  bundle := TEmailBundle.Create;
  headersOnly := False;
  success := imap.FetchMsgSet(headersOnly,messageSet,bundle);
  if (success = False) then
    begin
      WriteLn(imap.LastErrorText);
      Exit;
    end;

  //  Loop over the bundle and display the FROM and SUBJECT of each.
  email := TEmail.Create;
  i := 0;
  numEmails := bundle.MessageCount;
  while i < numEmails do
    begin
      bundle.EmailAt(i,email);

      WriteLn(email.From);
      WriteLn(email.Subject);
      WriteLn('--');
      i := i + 1;
    end;

  //  Disconnect from the IMAP server.
  success := imap.Disconnect();


  imap.Free;
  certStore.Free;
  jsonCN.Free;
  cert.Free;
  cert2.Free;
  messageSet.Free;
  bundle.Free;
  email.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.