FormMain.cs

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/*
 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 *
 * This file is part of the lwIP TCP/IP stack.
 *
 * Author: Martin Hentschel <info@cl-soft.de>
 *
 */

using System.Windows.Forms;
using Lextm.SharpSnmpLib.Mib;
using Lextm.SharpSnmpLib.Mib.Elements;
using Lextm.SharpSnmpLib.Mib.Elements.Types;
using Lextm.SharpSnmpLib.Mib.Elements.Entities;
using System.IO;

namespace LwipMibViewer
{
    public partial class FormMain : Form
    {
        readonly ListViewGroup listviewgroupAbstract;
        readonly ListViewGroup listviewgroupElement;
        readonly ListViewGroup listviewgroupBaseType;
        readonly ListViewGroup listviewgroupTypeChain;

        public FormMain()
        {
            this.Font = SystemInformation.MenuFont;
            InitializeComponent();

            this.listviewgroupAbstract = new ListViewGroup("Abstract", System.Windows.Forms.HorizontalAlignment.Left);
            this.listviewgroupElement = new ListViewGroup("Element Properties", System.Windows.Forms.HorizontalAlignment.Left);
            this.listviewgroupBaseType = new ListViewGroup("Element Base Type", System.Windows.Forms.HorizontalAlignment.Left);
            this.listviewgroupTypeChain = new ListViewGroup("Element Type Chain", System.Windows.Forms.HorizontalAlignment.Left);
            this.listviewNodeDetails.Groups.AddRange(new System.Windows.Forms.ListViewGroup[] {
                     listviewgroupAbstract,
                     listviewgroupElement,
                     listviewgroupBaseType,
                     listviewgroupTypeChain});

            try
            {
                DirectoryInfo dirInfo = new DirectoryInfo(Path.GetDirectoryName(Application.ExecutablePath));
                if (dirInfo != null)
                {
                    dirInfo = dirInfo.Parent;
                    if (dirInfo != null)
                    {
                        dirInfo = dirInfo.Parent;
                        if (dirInfo != null)
                        {
                            dirInfo = new DirectoryInfo(Path.Combine(dirInfo.FullName, "Mibs"));
                            if (dirInfo.Exists)
                            {
                                MibTypesResolver.RegisterResolver(new FileSystemMibResolver(dirInfo.FullName, true));
                            }
                        }
                    }
                }
            }
            catch
            { }
        }

        #region GUI Event Handler

        private void toolbuttonOpenMib_Click(object sender, System.EventArgs e)
        {
            if (this.dialogOpenMib.ShowDialog() == DialogResult.OK)
            {
                OpenMib(this.dialogOpenMib.FileName);
            }
        }

        private void treeMib_AfterSelect(object sender, TreeViewEventArgs e)
        {
            listviewNodeDetails.Items.Clear();

            if (e.Node != null)
            {
                MibTreeNode mtn = e.Node.Tag as MibTreeNode;
                if (mtn != null)
                {
                    listviewNodeDetails.Items.Add(new ListViewItem(new string[] { "Abstract", mtn.NodeType.ToString() }, this.listviewgroupAbstract));

                    listviewNodeDetails.Items.Add(new ListViewItem(new string[] { "Module", (mtn.Entity.Module != null) ? mtn.Entity.Module.Name : "" }, this.listviewgroupElement));
                    listviewNodeDetails.Items.Add(new ListViewItem(new string[] { "Type", mtn.Entity.GetType().Name }, this.listviewgroupElement));
                    listviewNodeDetails.Items.Add(new ListViewItem(new string[] { "Name", mtn.Entity.Name }, this.listviewgroupElement));
                    listviewNodeDetails.Items.Add(new ListViewItem(new string[] { "Description", mtn.Entity.Description }, this.listviewgroupElement));
                    listviewNodeDetails.Items.Add(new ListViewItem(new string[] { "OID", mtn.Entity.Value.ToString() }, this.listviewgroupElement));
                    listviewNodeDetails.Items.Add(new ListViewItem(new string[] { "Full OID", MibTypesResolver.ResolveOid(mtn.Entity).GetOidString() }, this.listviewgroupElement));
                    if (mtn.Entity is ObjectType)
                    {
                        listviewNodeDetails.Items.Add(new ListViewItem(new string[] { "Access", (mtn.Entity as ObjectType).Access.ToString() }, this.listviewgroupElement));
                    }

                    ITypeReferrer tr = mtn.Entity as ITypeReferrer;
                    if (tr != null)
                    {
                        ShowTypeDetails(listviewNodeDetails, this.listviewgroupBaseType, tr.BaseType);
                        ShowTypeChain(listviewNodeDetails, tr.ReferredType);
                    }
                }
            }
        }

        #endregion

        #region Methods

        private void OpenMib(string file)
        {
            try
            {
                MibDocument md = new MibDocument(file);
                MibTypesResolver.ResolveTypes(md.Modules[0]);

                this.treeMib.Nodes.Clear();
                this.listviewNodeDetails.Items.Clear();

                MibTree mt = new MibTree(md.Modules[0] as MibModule);
                foreach (MibTreeNode mibTreeNode in mt.Root)
                {
                    AddNode(mibTreeNode, this.treeMib.Nodes);

                    foreach (TreeNode node in this.treeMib.Nodes)
                    {
                        node.Expand();
                    }
                }
            }
            catch
            {
            }
        }

        private void AddNode(MibTreeNode mibNode, TreeNodeCollection parentNodes)
        {
            int imgIndex = 5; //unknown
            if ((mibNode.NodeType & MibTreeNodeType.Table) != 0)
            {
                imgIndex = 1;
            }
            else if ((mibNode.NodeType & MibTreeNodeType.TableRow) != 0)
            {
                imgIndex = 2;
            }
            else if ((mibNode.NodeType & MibTreeNodeType.TableCell) != 0)
            {
                imgIndex = 3;
            }
            else if ((mibNode.NodeType & MibTreeNodeType.Scalar) != 0)
            {
                imgIndex = 4;
            }
            else if ((mibNode.NodeType & MibTreeNodeType.Container) != 0)
            {
                imgIndex = 0;
            }

            TreeNode newNode = new TreeNode(mibNode.Entity.Name, imgIndex, imgIndex);
            newNode.Tag = mibNode;

            parentNodes.Add(newNode);

            foreach (MibTreeNode child in mibNode.ChildNodes)
            {
                AddNode(child, newNode.Nodes);
            }
        }

        private void ShowTypeChain(ListView lv, ITypeAssignment type)
        {
            ShowTypeDetails(lv, this.listviewgroupTypeChain, type);

            ITypeReferrer tr = type as ITypeReferrer;
            if ((tr != null) && (tr.ReferredType != null))
            {
                lv.Items.Add(new ListViewItem(new string[] { " >>>", "" }, this.listviewgroupTypeChain));
                ShowTypeChain(listviewNodeDetails, tr.ReferredType);
            }
        }

        private void ShowTypeDetails(ListView lv, ListViewGroup lvg, ITypeAssignment type)
        {
            lv.Items.Add(new ListViewItem(new string[] { "Module", (type.Module != null) ? type.Module.Name : "" }, lvg));
            lv.Items.Add(new ListViewItem(new string[] { "Type", type.GetType().Name }, lvg));
            lv.Items.Add(new ListViewItem(new string[] { "Name", type.Name }, lvg));
        }

        #endregion

    }
}