using System;
using System.Windows.Forms;
using nsoftware.SecureBlackbox;

/// <summary>
/// Summary description for SignForm.
/// </summary>
public class SignForm : System.Windows.Forms.Form
{
    private System.Windows.Forms.Button btnCancel;
    private System.Windows.Forms.Button btnOK;
    private System.Windows.Forms.OpenFileDialog dlgOpen;
    /// <summary>
    /// Required designer variable.
    /// </summary>
    private System.ComponentModel.Container components = null;
    private GroupBox gbKeyInfo;
    private GroupBox gbSigningCertificates;
    public ListView lvKnownCertificates;
    private ColumnHeader chSerial;
    private ColumnHeader chIssuer;
    private Button btnRemove;
    private Button btnAdd;
    public TextBox edKeyName;
    private Label lbKeyName;
    private GroupBox gbGeneralEnc;
    private Label lbSignatureMethod;
    private Label lbCanonMethod;
    public TextBox edHashAlgorithm;
    public TextBox edCanonMethod;
    private XAdESVerifier FVerifier = null;

    public SignForm(XAdESVerifier verifier)
    {
        //
        // Required for Windows Form Designer support
        //
        InitializeComponent();

        //
        // TODO: Add any constructor code after InitializeComponent call
        //

        FVerifier = verifier;
    }

    /// <summary>
    /// Clean up any resources being used.
    /// </summary>
    protected override void Dispose(bool disposing)
    {
        if (disposing)
        {
            if (components != null)
            {
                components.Dispose();
            }
        }
        base.Dispose(disposing);
    }

    #region Windows Form Designer generated code
    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {
            this.btnCancel = new System.Windows.Forms.Button();
            this.btnOK = new System.Windows.Forms.Button();
            this.dlgOpen = new System.Windows.Forms.OpenFileDialog();
            this.gbKeyInfo = new System.Windows.Forms.GroupBox();
            this.gbSigningCertificates = new System.Windows.Forms.GroupBox();
            this.lvKnownCertificates = new System.Windows.Forms.ListView();
            this.chSerial = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
            this.chIssuer = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
            this.btnRemove = new System.Windows.Forms.Button();
            this.btnAdd = new System.Windows.Forms.Button();
            this.edKeyName = new System.Windows.Forms.TextBox();
            this.lbKeyName = new System.Windows.Forms.Label();
            this.gbGeneralEnc = new System.Windows.Forms.GroupBox();
            this.edHashAlgorithm = new System.Windows.Forms.TextBox();
            this.edCanonMethod = new System.Windows.Forms.TextBox();
            this.lbSignatureMethod = new System.Windows.Forms.Label();
            this.lbCanonMethod = new System.Windows.Forms.Label();
            this.gbKeyInfo.SuspendLayout();
            this.gbSigningCertificates.SuspendLayout();
            this.gbGeneralEnc.SuspendLayout();
            this.SuspendLayout();
            // 
            // btnCancel
            // 
            this.btnCancel.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
            this.btnCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
            this.btnCancel.Location = new System.Drawing.Point(240, 314);
            this.btnCancel.Name = "btnCancel";
            this.btnCancel.Size = new System.Drawing.Size(75, 25);
            this.btnCancel.TabIndex = 7;
            this.btnCancel.Text = "Cancel";
            // 
            // btnOK
            // 
            this.btnOK.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
            this.btnOK.DialogResult = System.Windows.Forms.DialogResult.OK;
            this.btnOK.Location = new System.Drawing.Point(150, 314);
            this.btnOK.Name = "btnOK";
            this.btnOK.Size = new System.Drawing.Size(75, 25);
            this.btnOK.TabIndex = 6;
            this.btnOK.Text = "OK";
            // 
            // gbKeyInfo
            // 
            this.gbKeyInfo.Controls.Add(this.gbSigningCertificates);
            this.gbKeyInfo.Controls.Add(this.edKeyName);
            this.gbKeyInfo.Controls.Add(this.lbKeyName);
            this.gbKeyInfo.Location = new System.Drawing.Point(5, 145);
            this.gbKeyInfo.Name = "gbKeyInfo";
            this.gbKeyInfo.Size = new System.Drawing.Size(310, 160);
            this.gbKeyInfo.TabIndex = 17;
            this.gbKeyInfo.TabStop = false;
            this.gbKeyInfo.Text = "Key Info";
            // 
            // gbSigningCertificates
            // 
            this.gbSigningCertificates.Controls.Add(this.lvKnownCertificates);
            this.gbSigningCertificates.Controls.Add(this.btnRemove);
            this.gbSigningCertificates.Controls.Add(this.btnAdd);
            this.gbSigningCertificates.Location = new System.Drawing.Point(5, 57);
            this.gbSigningCertificates.Name = "gbSigningCertificates";
            this.gbSigningCertificates.Size = new System.Drawing.Size(300, 100);
            this.gbSigningCertificates.TabIndex = 16;
            this.gbSigningCertificates.TabStop = false;
            this.gbSigningCertificates.Text = "Known Certificates";
            // 
            // lvKnownCertificates
            // 
            this.lvKnownCertificates.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
            | System.Windows.Forms.AnchorStyles.Left) 
            | System.Windows.Forms.AnchorStyles.Right)));
            this.lvKnownCertificates.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
            this.chSerial,
            this.chIssuer});
            this.lvKnownCertificates.HideSelection = false;
            this.lvKnownCertificates.Location = new System.Drawing.Point(5, 20);
            this.lvKnownCertificates.Name = "lvKnownCertificates";
            this.lvKnownCertificates.Size = new System.Drawing.Size(210, 70);
            this.lvKnownCertificates.TabIndex = 4;
            this.lvKnownCertificates.UseCompatibleStateImageBehavior = false;
            this.lvKnownCertificates.View = System.Windows.Forms.View.Details;
            // 
            // chSerial
            // 
            this.chSerial.Text = "Serial";
            this.chSerial.Width = 85;
            // 
            // chIssuer
            // 
            this.chIssuer.Text = "Issuer";
            this.chIssuer.Width = 120;
            // 
            // btnRemove
            // 
            this.btnRemove.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
            this.btnRemove.Location = new System.Drawing.Point(220, 50);
            this.btnRemove.Name = "btnRemove";
            this.btnRemove.Size = new System.Drawing.Size(75, 25);
            this.btnRemove.TabIndex = 3;
            this.btnRemove.Text = "Remove";
            this.btnRemove.Click += new System.EventHandler(this.btnRemove_Click);
            // 
            // btnAdd
            // 
            this.btnAdd.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
            this.btnAdd.Location = new System.Drawing.Point(220, 20);
            this.btnAdd.Name = "btnAdd";
            this.btnAdd.Size = new System.Drawing.Size(75, 25);
            this.btnAdd.TabIndex = 2;
            this.btnAdd.Text = "Add";
            this.btnAdd.Click += new System.EventHandler(this.btnAdd_Click);
            // 
            // edKeyName
            // 
            this.edKeyName.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
            | System.Windows.Forms.AnchorStyles.Right)));
            this.edKeyName.Location = new System.Drawing.Point(81, 19);
            this.edKeyName.Name = "edKeyName";
            this.edKeyName.ReadOnly = true;
            this.edKeyName.Size = new System.Drawing.Size(218, 20);
            this.edKeyName.TabIndex = 1;
            // 
            // lbKeyName
            // 
            this.lbKeyName.Location = new System.Drawing.Point(17, 23);
            this.lbKeyName.Name = "lbKeyName";
            this.lbKeyName.Size = new System.Drawing.Size(64, 16);
            this.lbKeyName.TabIndex = 0;
            this.lbKeyName.Text = "Key Name:";
            // 
            // gbGeneralEnc
            // 
            this.gbGeneralEnc.Controls.Add(this.edHashAlgorithm);
            this.gbGeneralEnc.Controls.Add(this.edCanonMethod);
            this.gbGeneralEnc.Controls.Add(this.lbSignatureMethod);
            this.gbGeneralEnc.Controls.Add(this.lbCanonMethod);
            this.gbGeneralEnc.Location = new System.Drawing.Point(5, 10);
            this.gbGeneralEnc.Name = "gbGeneralEnc";
            this.gbGeneralEnc.Size = new System.Drawing.Size(310, 120);
            this.gbGeneralEnc.TabIndex = 18;
            this.gbGeneralEnc.TabStop = false;
            this.gbGeneralEnc.Text = "General";
            // 
            // edHashAlgorithm
            // 
            this.edHashAlgorithm.Enabled = false;
            this.edHashAlgorithm.Location = new System.Drawing.Point(98, 64);
            this.edHashAlgorithm.Name = "edHashAlgorithm";
            this.edHashAlgorithm.ReadOnly = true;
            this.edHashAlgorithm.Size = new System.Drawing.Size(160, 20);
            this.edHashAlgorithm.TabIndex = 18;
            // 
            // edCanonMethod
            // 
            this.edCanonMethod.Enabled = false;
            this.edCanonMethod.Location = new System.Drawing.Point(98, 33);
            this.edCanonMethod.Name = "edCanonMethod";
            this.edCanonMethod.ReadOnly = true;
            this.edCanonMethod.Size = new System.Drawing.Size(186, 20);
            this.edCanonMethod.TabIndex = 17;
            // 
            // lbSignatureMethod
            // 
            this.lbSignatureMethod.Location = new System.Drawing.Point(7, 67);
            this.lbSignatureMethod.Name = "lbSignatureMethod";
            this.lbSignatureMethod.Size = new System.Drawing.Size(85, 16);
            this.lbSignatureMethod.TabIndex = 8;
            this.lbSignatureMethod.Text = "Hash algorithm:";
            // 
            // lbCanonMethod
            // 
            this.lbCanonMethod.Location = new System.Drawing.Point(7, 28);
            this.lbCanonMethod.Name = "lbCanonMethod";
            this.lbCanonMethod.Size = new System.Drawing.Size(85, 32);
            this.lbCanonMethod.TabIndex = 2;
            this.lbCanonMethod.Text = "Canonicalization method";
            // 
            // SignForm
            // 
            this.AcceptButton = this.btnOK;
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.CancelButton = this.btnCancel;
            this.ClientSize = new System.Drawing.Size(319, 346);
            this.Controls.Add(this.gbGeneralEnc);
            this.Controls.Add(this.gbKeyInfo);
            this.Controls.Add(this.btnCancel);
            this.Controls.Add(this.btnOK);
            this.Cursor = System.Windows.Forms.Cursors.Default;
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
            this.MaximizeBox = false;
            this.Name = "SignForm";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
            this.Text = "Signature Options";
            this.gbKeyInfo.ResumeLayout(false);
            this.gbKeyInfo.PerformLayout();
            this.gbSigningCertificates.ResumeLayout(false);
            this.gbGeneralEnc.ResumeLayout(false);
            this.gbGeneralEnc.PerformLayout();
            this.ResumeLayout(false);

    }
    #endregion

    public Certificate LoadCertificate(string file, string password)
    {
        Certificate cert = null;

        if (file.Length > 0)
        {
            try
            {
                CertificateManager certmanager = new CertificateManager();

                certmanager.ImportFromFile(file, password);

                cert = certmanager.Certificate;
            }
            catch (Exception e)
            {
                MessageBox.Show("Cannot load certificate!");
            }
        }

        return cert;
    }

    private string RequestPassword()
    {
        frmRequestPassword dlg = new frmRequestPassword();
        string s = "";
        if (dlg.ShowDialog() == DialogResult.OK)
        {
            s = dlg.tbInput.Text;
        }
        dlg.Dispose();
        return s;
    }

    public void UpdateCertificates()
    {
        lvKnownCertificates.BeginUpdate();
        lvKnownCertificates.Items.Clear();

        for (int i = 0; i < FVerifier.KnownCertificates.Count; i++)
        {
            string s = FVerifier.KnownCertificates[i].Issuer;
            if (s == "")
                s = "<unknown>";

            ListViewItem Item = lvKnownCertificates.Items.Add(BitConverter.ToString(FVerifier.KnownCertificates[i].SerialNumber));
            Item.SubItems.Add(s);
        }

        lvKnownCertificates.EndUpdate();
    }

    private void btnAdd_Click(object sender, EventArgs e)
    {
        dlgOpen.Title = "Select certificate file";
        dlgOpen.Filter = "PEM-encoded certificate (*.pem)|*.PEM|DER-encoded certificate (*.cer)|*.CER|PFX-encoded certificate (*.pfx)|*.PFX";
        if (dlgOpen.ShowDialog() == DialogResult.OK)
        {
            Certificate cert = LoadCertificate(dlgOpen.FileName, RequestPassword());
            FVerifier.KnownCertificates.Add(cert);

            UpdateCertificates();
        }
    }

    private void btnRemove_Click(object sender, EventArgs e)
    {
        if (lvKnownCertificates.SelectedItems.Count > 0)
        {
            FVerifier.KnownCertificates.RemoveAt(lvKnownCertificates.SelectedItems[0].Index);

            UpdateCertificates();
        }
    }
}