Delphi DLL

Authenticate an IMAP SSH Tunnel with a Password

Demonstrates the Chilkat Imap.SshAuthenticatePw method, which authenticates the SSH tunnel using a username and password. The first argument is the SSH login name and the second is the SSH password. Call SshOpenTunnel first; after SSH authentication succeeds, connect and log in to IMAP.

Background: This is SSH authentication, which is entirely separate from the IMAP login that follows — the SSH credentials belong to the tunnel/jump host, while the IMAP credentials belong to the mail account. Password authentication is the simplest option; use SshAuthenticatePk for key-based authentication, which is generally preferred for automated jobs.

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Delphi DLL

var
success: Boolean;
imap: HCkImap;
sshPort: Integer;
sshPassword: PWideChar;

begin
success := False;

//  Demonstrates the Imap.SshAuthenticatePw method, which authenticates the SSH tunnel with a
//  username and password.  The 1st argument is the SSH login name and the 2nd is the SSH
//  password.  Call SshOpenTunnel first.

imap := CkImap_Create();

//  Open the SSH tunnel first.
sshPort := 22;
success := CkImap_SshOpenTunnel(imap,'ssh.example.com',sshPort);
if (success = False) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

//  The SSH password is not hard-coded in source.  Insert code here to obtain it from an
//  interactive prompt, environment variable, or a secrets vault.

//  Authenticate the SSH tunnel (this is SSH authentication, separate from IMAP login).
success := CkImap_SshAuthenticatePw(imap,'sshUser',sshPassword);
if (success = False) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

//  With the SSH tunnel in place, connect and log in to the IMAP server as usual.  The IMAP
//  traffic flows through the tunnel automatically.
CkImap_putSsl(imap,True);
CkImap_putPort(imap,993);
success := CkImap_Connect(imap,'imap.example.com');
if (success = False) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;
success := CkImap_Login(imap,'user@example.com','myPassword');
if (success = False) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

success := CkImap_Disconnect(imap);
if (success = False) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

success := CkImap_SshCloseTunnel(imap);
if (success = False) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

CkImap_Dispose(imap);