mirror of
https://github.com/xcp-ng/xenadmin.git
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407 lines
14 KiB
C#
407 lines
14 KiB
C#
/* Copyright (c) Citrix Systems Inc.
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* All rights reserved.
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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.Collections.Generic;
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using System.Windows.Forms;
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using XenAdmin.ConsoleView;
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using XenAPI;
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using XenAdmin.Core;
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using System.Drawing;
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namespace XenAdmin.Controls
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{
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public class ConsolePanel : UserControl
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{
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private const int MAX_ACTIVE_VM_CONSOLES = 10;
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private List<VM> activeVMConsoles;
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private Dictionary<VM, VNCView> vncViews;
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private Label errorLabel;
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private static string CouldNotConnect = Messages.VNC_COULD_NOT_CONNECT_CONSOLE;
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private static string CouldNotFindConsole = Messages.VNC_COULD_NOT_FIND_CONSOLES;
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public VNCView activeVNCView = null;
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private Panel RbacWarningPanel;
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private TableLayoutPanel tableLayoutPanel3;
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private PictureBox pictureBox2;
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private Label lableRbacWarning;
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private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
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public ConsolePanel()
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: base()
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{
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InitializeComponent();
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this.vncViews = new Dictionary<VM, VNCView>();
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this.activeVMConsoles = new List<VM>();
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this.Dock = DockStyle.Fill;
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pictureBox2.Image = SystemIcons.Warning.ToBitmap();
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}
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public void PauseAllViews()
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{
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// We're going to pause all of our VNCViews here, as this gets called when the VNC tab is not selected.
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// The VNCView deals with undocked cases.
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foreach (VNCView vncView in vncViews.Values)
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{
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vncView.Pause();
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}
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}
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public void ResetAllViews()
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{
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vncViews.Clear();
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}
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public void UnpauseActiveView()
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{
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// We're going to explicitly pause all the consoles
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// except the active one, then explicitly unpause the active one.
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foreach (VNCView vncView in vncViews.Values)
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{
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if (vncView != activeVNCView)
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vncView.Pause();
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}
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if (activeVNCView != null)
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{
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activeVNCView.Unpause();
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}
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}
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/// <summary>
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/// Gives focus to the console, as if the user had clicked it.
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/// </summary>
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internal void FocusActiveView()
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{
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if (activeVNCView != null)
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activeVNCView.FocusConsole();
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}
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internal void setCurrentSource(VM source)
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{
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Program.AssertOnEventThread();
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this.Controls.Clear();
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if (source == null)
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{
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activeVNCView = null;
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return;
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}
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List<Role> allowedRoles = null;
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if (RbacDenied(source, out allowedRoles))
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{
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lableRbacWarning.Text = String.Format(allowedRoles.Count == 1 ? Messages.RBAC_CONSOLE_WARNING_ONE : Messages.RBAC_CONSOLE_WARNING_MANY,
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Role.FriendlyCSVRoleList(source.Connection.Session.Roles),
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Role.FriendlyCSVRoleList(allowedRoles));
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this.Controls.Add(RbacWarningPanel);
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if (activeVNCView != null)
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this.Controls.Remove(activeVNCView);
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return;
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}
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activeVMConsoles.Remove(source);
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activeVMConsoles.Add(source);
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while (activeVMConsoles.Count > MAX_ACTIVE_VM_CONSOLES)
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{
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closeVNCForSource(activeVMConsoles[0]);
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activeVMConsoles.RemoveAt(0);
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}
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if (vncViews.ContainsKey(source))
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{
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activeVNCView = vncViews[source];
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}
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else
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{
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activeVNCView = new VNCView(source, null, null);
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vncViews[source] = activeVNCView;
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}
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activeVNCView.refreshIsoList();
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this.Controls.Add(activeVNCView);
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this.ClearErrorMessage();
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}
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internal void setCurrentSource(Host source)
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{
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// sanity...
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if (source == null)
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{
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log.Error("null source when attempting to connect to host VNC");
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SetErrorMessage(CouldNotConnect);
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return;
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}
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if (source == null)
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{
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log.Error("No local copy of host information when connecting to host VNC console...");
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SetErrorMessage(CouldNotConnect);
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return;
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}
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if (source.resident_VMs == null)
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{
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log.Error("No dom0 on host when connecting to host VNC console.");
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SetErrorMessage(CouldNotConnect);
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return;
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}
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List<XenRef<VM>> controlVMs =
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source.resident_VMs.FindAll((Predicate<XenRef<VM>>)delegate(XenRef<VM> vmRef)
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{
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VM vm = source.Connection.Resolve<VM>(vmRef);
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if (vm == null)
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{
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return false;
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}
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else
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{
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return vm.is_control_domain;
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}
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});
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if (controlVMs.Count > 0)
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{
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VM vm = source.Connection.Resolve<VM>(controlVMs[0]);
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if (vm == null)
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{
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SetErrorMessage(CouldNotFindConsole);
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}
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else
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{
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this.setCurrentSource(vm);
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}
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}
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else
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{
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SetErrorMessage(CouldNotFindConsole);
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}
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}
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public static bool RbacDenied(VM source, out List<Role> AllowedRoles)
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{
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if (source == null || source.Connection == null || !Helpers.MidnightRideOrGreater(source.Connection))
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{
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AllowedRoles = null;
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return false;
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}
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else
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{
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var session = source.Connection.Session;
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if (session != null && session.IsLocalSuperuser)
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{
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AllowedRoles = null;
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return false;
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}
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}
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List<Role> allowedRoles = null;
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if (source.is_control_domain)
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allowedRoles = Role.ValidRoleList("http/connect_console/host_console", source.Connection);
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else
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allowedRoles = Role.ValidRoleList("http/connect_console", source.Connection);
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if (source.Connection.Session.Roles.Find(delegate(Role r) { return allowedRoles.Contains(r); }) != null)
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{
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AllowedRoles = allowedRoles;
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return false;
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}
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AllowedRoles = allowedRoles;
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return true;
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}
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internal Image Snapshot(VM vm, string elevatedUsername, string elevatedPassword)
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{
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Program.AssertOffEventThread();
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VNCView view = null;
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bool useElevatedCredentials = false;
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if (!vncViews.ContainsKey(vm))
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{
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Program.Invoke(this, delegate
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{
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// use elevated credentials, if provided, to create a vncView (CA-91132)
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useElevatedCredentials = !String.IsNullOrEmpty(elevatedUsername) && !String.IsNullOrEmpty(elevatedPassword);
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if (useElevatedCredentials)
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view = new VNCView(vm, elevatedUsername, elevatedPassword);
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else
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{
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setCurrentSource(vm);
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if (vncViews.ContainsKey(vm))
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view = vncViews[vm];
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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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view = vncViews[vm];
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}
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if (view == null)
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return null;
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Image snapshot = view.Snapshot();
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// TODO: only pause the view if we're not currently using it.
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// view.Pause();
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if (useElevatedCredentials)
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{
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//used the elevated credentials for snapshot, need to close vnc when finished
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Program.Invoke(this, () => view.Dispose());
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}
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return snapshot;
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}
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public void closeVNCForSource(VM source)
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{
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Program.AssertOnEventThread();
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if (!vncViews.ContainsKey(source))
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return;
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VNCView vncView = vncViews[source];
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if (!vncView.isDocked)
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return;
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vncViews.Remove(source);
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vncView.Dispose();
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}
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public bool isVNCPausedForSource(VM source)
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{
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Program.AssertOnEventThread();
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VNCView vncView = null;
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if (vncViews.ContainsKey(source))
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{
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vncView = vncViews[source];
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return vncView.isPaused;
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}
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return false;
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}
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private void SetErrorMessage(String message)
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{
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this.errorLabel.Text = message;
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this.errorLabel.Visible = true;
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this.Controls.Add(this.errorLabel);
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this.setCurrentSource((VM)null);
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}
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private void ClearErrorMessage()
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{
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this.errorLabel.Text = "";
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this.errorLabel.Visible = false;
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this.Controls.Remove(this.errorLabel);
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}
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private void InitializeComponent()
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{
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System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(ConsolePanel));
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this.errorLabel = new System.Windows.Forms.Label();
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this.RbacWarningPanel = new System.Windows.Forms.Panel();
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this.tableLayoutPanel3 = new System.Windows.Forms.TableLayoutPanel();
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this.pictureBox2 = new System.Windows.Forms.PictureBox();
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this.lableRbacWarning = new System.Windows.Forms.Label();
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this.RbacWarningPanel.SuspendLayout();
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this.tableLayoutPanel3.SuspendLayout();
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((System.ComponentModel.ISupportInitialize)(this.pictureBox2)).BeginInit();
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this.SuspendLayout();
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//
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// errorLabel
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//
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resources.ApplyResources(this.errorLabel, "errorLabel");
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this.errorLabel.Name = "errorLabel";
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//
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// RbacWarningPanel
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//
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this.RbacWarningPanel.BackColor = System.Drawing.Color.Transparent;
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this.RbacWarningPanel.Controls.Add(this.tableLayoutPanel3);
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resources.ApplyResources(this.RbacWarningPanel, "RbacWarningPanel");
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this.RbacWarningPanel.Name = "RbacWarningPanel";
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//
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// tableLayoutPanel3
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//
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resources.ApplyResources(this.tableLayoutPanel3, "tableLayoutPanel3");
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this.tableLayoutPanel3.Controls.Add(this.pictureBox2, 0, 0);
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this.tableLayoutPanel3.Controls.Add(this.lableRbacWarning, 1, 0);
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this.tableLayoutPanel3.Name = "tableLayoutPanel3";
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//
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// pictureBox2
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//
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resources.ApplyResources(this.pictureBox2, "pictureBox2");
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this.pictureBox2.Name = "pictureBox2";
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this.pictureBox2.TabStop = false;
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//
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// lableRbacWarning
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//
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resources.ApplyResources(this.lableRbacWarning, "lableRbacWarning");
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this.lableRbacWarning.Name = "lableRbacWarning";
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//
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// ConsolePanel
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//
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this.Controls.Add(this.RbacWarningPanel);
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this.Name = "ConsolePanel";
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resources.ApplyResources(this, "$this");
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this.RbacWarningPanel.ResumeLayout(false);
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this.tableLayoutPanel3.ResumeLayout(false);
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this.tableLayoutPanel3.PerformLayout();
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((System.ComponentModel.ISupportInitialize)(this.pictureBox2)).EndInit();
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this.ResumeLayout(false);
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}
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public void SendCAD()
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{
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if (this.activeVNCView != null)
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this.activeVNCView.SendCAD();
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}
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internal void SwitchIfRequired()
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{
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if (activeVNCView != null)
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activeVNCView.SwitchIfRequired();
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}
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}
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}
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