private void ZAddMailbox(TreeNode pNode, cMailbox pMailbox, bool pCheck)
{
if (pCheck)
{
foreach (TreeNode n in pNode.Nodes)
{
if (n.Tag is cNodeTag lTag && lTag.Mailbox == pMailbox)
{
return;
}
}
}
var lNode = pNode.Nodes.Add(pMailbox.Name);
TreeNode lPleaseWait;
if (pMailbox.HasChildren == false)
{
lPleaseWait = null;
}
else
{
lPleaseWait = lNode.Nodes.Add(kPleaseWait);
}
lNode.Tag = new cNodeTag(pMailbox, lPleaseWait);
}
private void ZAddMailbox(iMailboxContainer pContainer, cMailbox pMailbox)
{
foreach (TreeNode lNode in tvw.Nodes)
{
ZAddMailbox(lNode, pContainer, pMailbox);
}
}
public cNodeTag(cMailbox pMailbox, TreeNode pPleaseWait)
{
Namespace = null;
Mailbox = pMailbox ?? throw new ArgumentNullException(nameof(pMailbox));
MailboxContainer = pMailbox;
CanSelect = pMailbox.CanSelect;
PleaseWait = pPleaseWait;
}
public cNodeTag(cNamespace pNamespace, TreeNode pPleaseWait)
{
Namespace = pNamespace ?? throw new ArgumentNullException(nameof(pNamespace));
Mailbox = null;
MailboxContainer = pNamespace;
CanSelect = false;
PleaseWait = pPleaseWait;
}
public frmMessage(string pInstanceName, frmSelectedMailbox pParent, bool pProgressBar, cMailbox pMailbox, int pMaxTextBytes, cMessage pMessage)
{
mInstanceName = pInstanceName;
mParent = pParent;
mProgressBar = pProgressBar;
mMailbox = pMailbox;
mMaxTextBytes = pMaxTextBytes;
mMessage = pMessage;
InitializeComponent();
}
private void ZUnsubscribeMailbox()
{
if (mSubscribedMailbox == null)
{
return;
}
mSubscribedMailbox.MessageDelivery -= ZSubscribedMailboxMessageDelivery;
mSubscribedMailbox.PropertyChanged -= ZSubscribedMailboxPropertyChanged;
mSubscribedMailbox = null;
}
public cNodeTag(cMailbox pMailbox, TreeNode pPleaseWait)
{
Namespace = null;
Mailbox = pMailbox ?? throw new ArgumentNullException(nameof(pMailbox));
MailboxContainer = pMailbox;
CanSelect = pMailbox.CanSelect;
PleaseWait = pPleaseWait;
if (pPleaseWait == null)
{
State = eState.expanded;
}
else
{
State = eState.neverexpanded;
}
}
public cNodeTag(cNamespace pNamespace, TreeNode pPleaseWait)
{
Namespace = pNamespace ?? throw new ArgumentNullException(nameof(pNamespace));
Mailbox = null;
MailboxContainer = pNamespace;
CanSelect = false;
PleaseWait = pPleaseWait;
if (pPleaseWait == null)
{
State = eState.expanded;
}
else
{
State = eState.neverexpanded;
}
}
private void ZAddMailbox(TreeNode pNode, iMailboxContainer pContainer, cMailbox pMailbox)
{
var lTag = pNode.Tag as cNodeTag;
if (lTag != null && lTag.State == cNodeTag.eState.expanded)
{
if (lTag.MailboxContainer.Equals(pContainer))
{
ZAddMailbox(pNode, pMailbox, true);
}
foreach (TreeNode lNode in pNode.Nodes)
{
ZAddMailbox(lNode, pContainer, pMailbox);
}
}
}
private void ZAddMailbox(TreeNode pNode, cMailbox pMailbox)
{
var lNode = pNode.Nodes.Add(pMailbox.Name);
TreeNode lPleaseWait;
if (pMailbox.HasChildren == false)
{
lPleaseWait = null;
}
else
{
lPleaseWait = lNode.Nodes.Add(kPleaseWait);
}
lNode.Tag = new cNodeTag(pMailbox, lPleaseWait);
}
private void ZQuery()
{
// defend against querying the same mailbox twice in a row
//
// (note that this will regularly happen without this code as
// events from the client object are delivered asyncronously - therefore two events may arrive after two changes
// )
//
var lSelectedMailbox = mClient.SelectedMailbox;
var lSelectedMessageCache = lSelectedMailbox?.MessageCache;
if (lSelectedMailbox == mCurrentMailbox && lSelectedMessageCache == mCurrentMessageCache)
{
return;
}
ZMessageFormsClose();
ZUnsubscribeMailbox();
// note that I check the message cache only: in theory if the mailbox is being unselected as we pass through this code it could be null, even though the lSelectedMailbox isn't
if (lSelectedMessageCache == null)
{
mCurrentMailbox = null;
mCurrentMessageCache = null;
}
else
{
mCurrentMailbox = lSelectedMailbox;
mCurrentMessageCache = lSelectedMessageCache;
}
ZSubscribeMailbox();
ZQueryProperties();
ZQueryMessagesAsync(); // don't wait
}
private async Task ZConnectAsync(cTrace.cContext pParentContext)
{
var lContext = mRootContext.NewMethod(nameof(cIMAPClient), nameof(ZConnectAsync));
if (mDisposed)
{
throw new ObjectDisposedException(nameof(cIMAPClient));
}
cServer lServer = Server;
cCredentials lCredentials = Credentials;
if (lServer == null)
{
throw new InvalidOperationException("connect requires server to be set");
}
if (lCredentials == null)
{
throw new InvalidOperationException("connect requires credentials to be set");
}
bool lSessionReplaced;
if (mSession == null)
{
lSessionReplaced = false;
}
else
{
if (!mSession.IsUnconnected)
{
throw new InvalidOperationException(kInvalidOperationExceptionMessage.NotUnconnected);
}
mSession.Dispose();
lSessionReplaced = true;
mNamespaces = null;
mInbox = null;
mSynchroniser.InvokePropertyChanged(nameof(Inbox), lContext);
}
// initialise the SASLs
foreach (var lSASL in lCredentials.SASLs)
{
lSASL.LastAuthentication = null;
}
mSession = new cSession(mSynchroniser, mIgnoreCapabilities, mMailboxCacheDataItems, mNetworkWriteConfiguration, mIdleConfiguration, mFetchCacheItemsConfiguration, mFetchBodyReadConfiguration, mEncoding, lContext);
var lSession = mSession;
if (lSessionReplaced)
{
mSynchroniser.InvokePropertyChanged(nameof(Capabilities), lContext);
mSynchroniser.InvokePropertyChanged(nameof(ConnectionState), lContext);
mSynchroniser.InvokePropertyChanged(nameof(IsConnected), lContext);
mSynchroniser.InvokePropertyChanged(nameof(IsUnconnected), lContext);
mSynchroniser.InvokePropertyChanged(nameof(ConnectedAccountId), lContext);
mSynchroniser.InvokePropertyChanged(nameof(EnabledExtensions), lContext);
mSynchroniser.InvokePropertyChanged(nameof(HomeServerReferral), lContext);
mSynchroniser.InvokePropertyChanged(nameof(ServerId), lContext);
mSynchroniser.InvokePropertyChanged(nameof(Namespaces), lContext);
mSynchroniser.InvokePropertyChanged(nameof(SelectedMailbox), lContext);
mSynchroniser.InvokePropertyChanged(nameof(SelectedMailboxDetails), lContext);
}
using (var lToken = mCancellationManager.GetToken(lContext))
{
var lMC = new cMethodControl(mTimeout, lToken.CancellationToken);
try
{
await lSession.ConnectAsync(lMC, lServer, lContext).ConfigureAwait(false);
if (lSession.Capabilities == null)
{
await lSession.CapabilityAsync(lMC, lContext).ConfigureAwait(false);
}
if (lSession.ConnectionState == eConnectionState.notauthenticated && !lSession.TLSInstalled && lSession.Capabilities.StartTLS)
{
await lSession.StartTLSAsync(lMC, lContext).ConfigureAwait(false);
await lSession.CapabilityAsync(lMC, lContext).ConfigureAwait(false);
}
object lOriginalCapabilities = lSession.Capabilities;
cCapabilities lCurrentCapabilities = lSession.Capabilities;
if (lSession.ConnectionState == eConnectionState.notauthenticated)
{
bool lTLSIssue = false;
bool lTriedCredentials = false;
Exception lAuthenticateException = null;
cAccountId lAccountId = new cAccountId(lServer.Host, lCredentials.Type, lCredentials.UserId);
bool lTLSInstalled = lSession.TLSInstalled;
if (lCredentials.TryAllSASLs)
{
foreach (var lSASL in lCredentials.SASLs)
{
if ((lSASL.TLSRequirement == eTLSRequirement.required && !lTLSInstalled) || (lSASL.TLSRequirement == eTLSRequirement.disallowed && lTLSInstalled))
{
lTLSIssue = true;
}
else
{
lTriedCredentials = true;
lAuthenticateException = await lSession.AuthenticateAsync(lMC, lAccountId, lSASL, lContext).ConfigureAwait(false);
if (lSession.ConnectionState != eConnectionState.notauthenticated || lAuthenticateException != null)
{
break;
}
}
}
}
else
{
foreach (var lSASL in lCredentials.SASLs)
{
if (lCurrentCapabilities.AuthenticationMechanisms.Contains(lSASL.MechanismName)) // no case-invariance required because SASL (rfc 2222) says only uppercase is allowed
{
if ((lSASL.TLSRequirement == eTLSRequirement.required && !lTLSInstalled) || (lSASL.TLSRequirement == eTLSRequirement.disallowed && lTLSInstalled))
{
lTLSIssue = true;
}
else
{
lTriedCredentials = true;
lAuthenticateException = await lSession.AuthenticateAsync(lMC, lAccountId, lSASL, lContext).ConfigureAwait(false);
if (lSession.ConnectionState != eConnectionState.notauthenticated || lAuthenticateException != null)
{
break;
}
}
}
}
}
if (lSession.ConnectionState == eConnectionState.notauthenticated && lAuthenticateException == null && !lCurrentCapabilities.LoginDisabled && lCredentials.Login != null)
{
if ((lCredentials.Login.TLSRequirement == eTLSRequirement.required && !lTLSInstalled) || (lCredentials.Login.TLSRequirement == eTLSRequirement.disallowed && lTLSInstalled))
{
lTLSIssue = true;
}
else
{
lTriedCredentials = true;
lAuthenticateException = await lSession.LoginAsync(lMC, lAccountId, lCredentials.Login, lContext).ConfigureAwait(false);
}
}
if (lSession.ConnectionState != eConnectionState.authenticated)
{
lContext.TraceError("could not authenticate");
// log out
await lSession.LogoutAsync(lMC, lContext).ConfigureAwait(false);
// throw an exception that indicates why we couldn't connect
if (lTriedCredentials)
{
if (lAuthenticateException != null)
{
throw lAuthenticateException;
}
throw new cCredentialsException(lContext);
}
throw new cAuthenticationMechanismsException(lTLSIssue, lContext); // the server has no mechanisms that we can try
}
// re-get the capabilities if we didn't get new ones as part of the authentication/ login OR if a security layer was installed (SASL requires this)
if (ReferenceEquals(lOriginalCapabilities, lSession.Capabilities) || lSession.SASLSecurityInstalled)
{
await lSession.CapabilityAsync(lMC, lContext).ConfigureAwait(false);
}
lCurrentCapabilities = lSession.Capabilities;
}
if (lCurrentCapabilities.Enable)
{
fEnableableExtensions lExtensions = fEnableableExtensions.none;
if (lCurrentCapabilities.UTF8Accept || lCurrentCapabilities.UTF8Only)
{
lExtensions = lExtensions | fEnableableExtensions.utf8;
}
if (lExtensions != fEnableableExtensions.none)
{
await lSession.EnableAsync(lMC, lExtensions, lContext).ConfigureAwait(false);
}
}
// enabled (lock in the capabilities and enabled extensions)
lSession.SetEnabled(lContext);
Task lIdTask;
if (lCurrentCapabilities.Id)
{
cId lClientId;
if ((lSession.EnabledExtensions & fEnableableExtensions.utf8) == 0)
{
lClientId = mClientId;
}
else
{
lClientId = mClientIdUTF8 ?? mClientId;
}
lIdTask = lSession.IdAsync(lMC, lClientId, lContext);
}
else
{
lIdTask = null;
}
if (lCurrentCapabilities.Namespace)
{
await lSession.NamespaceAsync(lMC, lContext).ConfigureAwait(false);
var lPersonalNamespaceNames = lSession.NamespaceNames?.Personal;
if (lPersonalNamespaceNames != null)
{
foreach (var lName in lPersonalNamespaceNames)
{
// special case, where the personal namespace is "INBOX/" (where "/" is the delimiter)
if (lName.Delimiter != null && lName.Prefix.Equals(cMailboxName.InboxString + lName.Delimiter, StringComparison.InvariantCultureIgnoreCase))
{
mInbox = new cMailbox(this, lSession.GetMailboxHandle(new cMailboxName(cMailboxName.InboxString, lName.Delimiter)));
mSynchroniser.InvokePropertyChanged(nameof(Inbox), lContext);
break;
}
cMailboxPathPattern lPattern = new cMailboxPathPattern(lName.Prefix, "%", lName.Delimiter);
if (lPattern.Matches(cMailboxName.InboxString))
{
mInbox = new cMailbox(this, lSession.GetMailboxHandle(new cMailboxName(cMailboxName.InboxString, lName.Delimiter)));
mSynchroniser.InvokePropertyChanged(nameof(Inbox), lContext);
break;
}
}
}
}
if (mInbox == null)
{
var lDelimiter = await lSession.ListDelimiterAsync(lMC, lContext).ConfigureAwait(false);
if (!lCurrentCapabilities.Namespace)
{
mNamespaces = new cNamespaces(this, new cNamespaceName[] { new cNamespaceName("", lDelimiter) }, null, null);
mSynchroniser.InvokePropertyChanged(nameof(Namespaces), lContext);
}
mInbox = new cMailbox(this, lSession.GetMailboxHandle(new cMailboxName(cMailboxName.InboxString, lDelimiter)));
mSynchroniser.InvokePropertyChanged(nameof(Inbox), lContext);
}
// wait for id to complete
if (lIdTask != null)
{
await lIdTask.ConfigureAwait(false);
}
// initialised (namespaces set, inbox available, id available (if server supports it); user may now issue commands)
lSession.SetInitialised(lContext);
}
catch when(lSession.ConnectionState != eConnectionState.disconnected)
{
lSession.Disconnect(lContext);
throw;
}
}
}
private void ZSubscribeMailbox(cMailbox pMailbox, TreeNode pNode)
{
mSubscribedMailbox = pMailbox;
mSubscribedMailbox.MessageDelivery += ZSubscribedMailboxMessageDelivery;
mSubscribedMailbox.PropertyChanged += ZSubscribedMailboxPropertyChanged;
}