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343 lines
16 KiB
C#
343 lines
16 KiB
C#
/* Copyright (c) Cloud Software Group, Inc.
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*
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* Redistribution and use in source and binary forms,
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* with or without modification, are permitted provided
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* that the following conditions are met:
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*
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* * Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the
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* following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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using System;
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using System.IO;
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using System.Net;
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using System.Windows.Forms;
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using System.Collections.Generic;
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using XenAdmin.Core;
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using XenAdmin.Dialogs;
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using XenAPI;
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namespace XenAdmin.Network
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{
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class XenConnectionUI
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{
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public static Dictionary<IXenConnection, ConnectingToServerDialog> connectionDialogs = new Dictionary<IXenConnection, ConnectingToServerDialog>();
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public static void ConnectToXapiDatabase(IXenConnection conn, Form owner)
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{
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try
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{
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((XenConnection)conn).LoadFromDatabaseFile(conn.Hostname);
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}
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catch (ConnectionExists e)
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{
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ShowConnectingDialogError(owner, conn, e);
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}
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}
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/// <summary>
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/// Start connecting to a server
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/// </summary>
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/// <param name="connection"></param>
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/// <param name="interactive">Whether the user has initiated/is watching this connection attempt.</param>
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/// <param name="owner">The form that connecting dialogs will be displayed in front of.
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/// May be null, in which case Program.MainWindow is used.</param>
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/// <param name="initiateCoordinatorSearch">If true, when connection to the coordinator fails we will start trying to connect to
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/// each remembered supporter in turn.</param>
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public static void BeginConnect(IXenConnection connection, bool interactive, Form owner, bool initiateCoordinatorSearch)
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{
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Program.AssertOnEventThread();
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if (interactive)
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{
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// CA-214953 - Focus on this connection's dialog, if one exists, otherwise create one
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if (connectionDialogs.TryGetValue(connection, out ConnectingToServerDialog dlg))
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{
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if (dlg.WindowState == FormWindowState.Minimized)
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dlg.WindowState = FormWindowState.Normal;
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dlg.Focus();
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return;
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}
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RegisterEventHandlers(connection);
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dlg = new ConnectingToServerDialog(connection);
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connectionDialogs.Add(connection, dlg);
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if (!dlg.BeginConnect(owner, initiateCoordinatorSearch) && connection != null)
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connectionDialogs.Remove(connection);
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}
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else
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{
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RegisterEventHandlers(connection);
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((XenConnection)connection).BeginConnect(initiateCoordinatorSearch, PromptForNewPassword);
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}
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}
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private static bool PromptForNewPassword(IXenConnection connection, string oldPassword)
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{
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bool result = false;
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Program.Invoke(Program.MainWindow, () =>
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{
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// show an altered version of the add server dialog with the hostname greyed out
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using (var dialog = new AddServerDialog(connection, true))
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result = dialog.ShowDialog(Program.MainWindow) == DialogResult.OK;
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});
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return result;
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}
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private static void RegisterEventHandlers(IXenConnection connection)
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{
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UnregisterEventHandlers(connection);
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connection.ConnectionResult += Connection_ConnectionResult;
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connection.ConnectionStateChanged += Connection_ConnectionStateChanged;
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}
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private static void UnregisterEventHandlers(IXenConnection connection)
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{
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connection.ConnectionResult -= Connection_ConnectionResult;
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connection.ConnectionStateChanged -= Connection_ConnectionStateChanged;
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}
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private static void Connection_ConnectionResult(object sender, ConnectionResultEventArgs e)
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{
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if (!(sender is IXenConnection conn))
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return;
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Form ownerForm = Program.MainWindow;
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if (connectionDialogs.TryGetValue(conn, out var dlg))
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{
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var form = dlg.GetOwnerForm();
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if (form != null)
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ownerForm = form;
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dlg.CloseConnectingDialog();
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}
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if (e.Connected || e.Error == null)
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return;
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Program.Invoke(Program.MainWindow, () => ShowConnectingDialogError(ownerForm, conn, e.Error));
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}
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private static void ShowConnectingDialogError(Form owner, IXenConnection connection, Exception error)
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{
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if (error is Failure f)
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{
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if (f.ErrorDescription[0] == Failure.HOST_IS_SLAVE)
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{
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string oldHost = connection.Name;
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string poolCoordinatorName = f.ErrorDescription[1];
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string pool_name = XenConnection.ConnectedElsewhere(poolCoordinatorName);
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if (pool_name != null)
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{
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if (!Program.RunInAutomatedTestMode)
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{
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if (pool_name == oldHost)
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{
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using (var dlg = new InformationDialog(string.Format(Messages.OLD_CONNECTION_ALREADY_CONNECTED, pool_name))
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{WindowTitle = Messages.ADD_NEW_CONNECT_TO})
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{
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dlg.ShowDialog(owner);
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}
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}
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else
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{
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using (var dlg = new InformationDialog(string.Format(Messages.SUPPORTER_ALREADY_CONNECTED, oldHost, pool_name))
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{WindowTitle = Messages.ADD_NEW_CONNECT_TO})
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{
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dlg.ShowDialog(owner);
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}
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}
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}
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}
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else
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{
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DialogResult dialogResult;
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using (var dlg = new WarningDialog(string.Format(Messages.SUPPORTER_CONNECTION_ERROR, oldHost, poolCoordinatorName),
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ThreeButtonDialog.ButtonYes,
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ThreeButtonDialog.ButtonNo){WindowTitle = Messages.CONNECT_TO_SERVER})
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{
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dialogResult = dlg.ShowDialog(owner);
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}
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if (DialogResult.Yes == dialogResult)
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{
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((XenConnection) connection).Hostname = poolCoordinatorName;
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BeginConnect(connection, true, owner, false);
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}
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}
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}
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else if (f.ErrorDescription[0] == Failure.RBAC_PERMISSION_DENIED)
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{
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AddError(owner, connection, Messages.ERROR_NO_PERMISSION, Messages.SOLUTION_NO_PERMISSION);
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}
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else if (f.ErrorDescription[0] == XenAPI.Failure.SESSION_AUTHENTICATION_FAILED)
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{
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AddError(owner, connection, Messages.ERROR_AUTHENTICATION, Messages.SOLUTION_AUTHENTICATION);
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}
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else if (f.ErrorDescription[0] == Failure.HOST_STILL_BOOTING)
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{
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AddError(owner, connection, Messages.ERROR_HOST_STILL_BOOTING, Messages.SOLUTION_HOST_STILL_BOOTING);
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}
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else
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{
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AddError(owner, connection, string.IsNullOrEmpty(f.Message) ? Messages.ERROR_UNKNOWN : f.Message, string.Empty);
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}
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}
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else if (error is WebException w)
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{
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if (connection.SuppressErrors)
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return;
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var format = Properties.Settings.Default.ProxySetting != (int)HTTPHelper.ProxyStyle.DirectConnection
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? Messages.SOLUTION_CHECK_XENSERVER_WITH_PROXY
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: Messages.SOLUTION_CHECK_XENSERVER;
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var solutionCheckXenServer = string.Format(format, BrandManager.ProductBrand, connection.Hostname);
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switch (w.Status)
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{
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case WebExceptionStatus.ConnectionClosed:
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AddError(owner, connection, Messages.CONNECTION_CLOSED_BY_SERVER, solutionCheckXenServer);
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break;
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case WebExceptionStatus.ConnectFailure:
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AddError(owner, connection, Messages.CONNECTION_REFUSED, solutionCheckXenServer);
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break;
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case WebExceptionStatus.ProtocolError:
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if (w.Message != null && w.Message.Contains("(404)"))
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AddError(owner, connection, string.Format(Messages.ERROR_NO_XENSERVER, connection.Hostname), solutionCheckXenServer);
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else if (w.Message != null && w.Message.Contains("(407)"))
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{
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string proxyAddress = Properties.Settings.Default.ProxyAddress;
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AddError(owner, connection, string.Format(Messages.ERROR_PROXY_AUTHENTICATION, proxyAddress), string.Format(Messages.SOLUTION_CHECK_PROXY, proxyAddress, BrandManager.BrandConsole));
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}
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else
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AddError(owner, connection, Messages.ERROR_UNKNOWN, Messages.SOLUTION_UNKNOWN);
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break;
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case WebExceptionStatus.NameResolutionFailure:
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AddError(owner, connection, string.Format(Messages.ERROR_NOT_FOUND, connection.Hostname), Messages.SOLUTION_NOT_FOUND);
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break;
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case WebExceptionStatus.ReceiveFailure:
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case WebExceptionStatus.SendFailure:
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AddError(owner, connection, string.Format(Messages.ERROR_NO_XENSERVER, connection.Hostname), solutionCheckXenServer);
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break;
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case WebExceptionStatus.SecureChannelFailure:
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AddError(owner, connection, string.Format(Messages.ERROR_SECURE_CHANNEL_FAILURE, connection.Hostname), Messages.SOLUTION_UNKNOWN);
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break;
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default:
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AddError(owner, connection, Messages.ERROR_UNKNOWN, Messages.SOLUTION_UNKNOWN);
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break;
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}
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}
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else if (error is UriFormatException)
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{
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AddError(owner, connection, string.Format(Messages.ERROR_INVALID_URI, connection.Name), Messages.SOLUTION_NOT_FOUND);
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}
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else if (error is FileNotFoundException)
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{
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// If you're using the DbProxy
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AddError(owner, connection, string.Format(string.Format(Messages.ERROR_FILE_NOT_FOUND, ((XenConnection)connection).Hostname), connection.Name), Messages.SOLUTION_UNKNOWN);
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}
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else if (error is ConnectionExists c)
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{
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ConnectionsManager.ClearCacheAndRemoveConnection(connection);
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if (!Program.RunInAutomatedTestMode)
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{
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using (var dlg = new InformationDialog(c.GetDialogMessage()))
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dlg.ShowDialog(owner);
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}
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}
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else if (error is ArgumentException)
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{
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// This happens if the server API is incompatible with our bindings. This should
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// never happen in production, but will happen during development if a field
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// changes type, for example.
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AddError(owner, connection, string.Format(Messages.SERVER_API_INCOMPATIBLE, BrandManager.BrandConsole), Messages.SOLUTION_UNKNOWN);
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}
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else if (error is ServerNotSupported ex1)
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{
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// Server version is too old for this version of XenCenter
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AddError(owner, connection, ex1.Message, string.Format(Messages.SERVER_TOO_OLD_SOLUTION, BrandManager.BrandConsole));
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}
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else
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{
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if (((XenConnection)connection).SuppressErrors)
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return;
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AddError(owner, connection, string.Format(Messages.ERROR_UNKNOWN, ((XenConnection)connection).Hostname), Messages.SOLUTION_UNKNOWN);
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}
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}
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private static void AddError(Form owner, IXenConnection connection, string error, string solution)
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{
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string text = string.Format(Messages.MESSAGEBOX_ERRORTEXT, ((XenConnection)connection).Hostname, error, solution);
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// first check if there is already a dialog showing the same error (CA-97070, CA-88901)
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foreach (Form form in Application.OpenForms)
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{
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if (form.GetType() == typeof(ThreeButtonDialog))
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{
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ThreeButtonDialog dlg = (ThreeButtonDialog) form;
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if (dlg.Message == text && dlg.Owner == owner)
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{
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HelpersGUI.BringFormToFront(form);
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return;
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}
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}
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}
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if (((XenConnection)connection).fromDialog)
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{
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DialogResult dialogResult;
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using (var dlg = new ErrorDialog(text,
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new ThreeButtonDialog.TBDButton(Messages.RETRY_BUTTON_LABEL, DialogResult.Retry, ThreeButtonDialog.ButtonType.ACCEPT, true),
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ThreeButtonDialog.ButtonCancel){WindowTitle = Messages.CONNECT_TO_SERVER})
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{
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dialogResult = dlg.ShowDialog(owner);
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}
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if (DialogResult.Retry == dialogResult)
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{
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new AddServerDialog(connection, false).Show(owner);
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}
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}
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else
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{
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using (var dlg = new ErrorDialog(text) {WindowTitle = Messages.CONNECT_TO_SERVER})
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dlg.ShowDialog(owner);
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}
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}
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private static void Connection_ConnectionStateChanged(IXenConnection conn)
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{
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if (conn.IsConnected)
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return;
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// Close dialogs on termination
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Program.Invoke(Program.MainWindow, () => XenDialogBase.CloseAll(conn));
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}
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}
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}
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