/*
 * SecureBlackbox 2024 .NET Edition - Sample Project
 *
 * This sample project demonstrates the usage of SecureBlackbox in a 
 * simple, straightforward way. It is not intended to be a complete 
 * application. Error handling and other checks are simplified for clarity.
 *
 * www.nsoftware.com/secureblackbox
 *
 * This code is subject to the terms and conditions specified in the 
 * corresponding product license agreement which outlines the authorized 
 * usage and restrictions.
 * 
 */

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

namespace ASiCSigner
{
    /// <summary>
    /// Summary description for frmMain.
    /// </summary>
    public class MainForm : System.Windows.Forms.Form
    {
        private System.Windows.Forms.OpenFileDialog dlgOpen;
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components = null;
        private System.Windows.Forms.Button btnSign;
        private TextBox edOutputFile;
        private Button btnOutputFile;
        private Label label2;
        
        private SaveFileDialog dlgSave;
        public TextBox edTimestampServer;
        public CheckBox cbTimestamp;
        private Label label1;
        private ComboBox cbLevel;
        private Button btnBrowseCert;
        private TextBox edCertPassword;
        private TextBox edSigningCertificate;
        private Label lCertPassword;
        private Label label6;
        private ComboBox cbHashAlgorithm;
        private Label label4;
        private TextBox edInputFile;
        private Button btnInputFile;
        private Label label3;
        public CheckBox cbDetached;
        private Label label5;
        private GroupBox groupBox1;
        private CAdESSigner signer;

        public MainForm()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();

            //
            // TODO: Add any constructor code after InitializeComponent call
            //
            signer = new CAdESSigner();

            cbLevel.SelectedIndex = 0;
            cbHashAlgorithm.SelectedIndex = 2;
        }

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        protected override void Dispose(bool disposing)
        {
            if (disposing)
            {
                if (components != null)
                {
                    components.Dispose();
                    signer.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.btnSign = new System.Windows.Forms.Button();
            this.dlgOpen = new System.Windows.Forms.OpenFileDialog();
            this.edOutputFile = new System.Windows.Forms.TextBox();
            this.btnOutputFile = new System.Windows.Forms.Button();
            this.label2 = new System.Windows.Forms.Label();
            this.dlgSave = new System.Windows.Forms.SaveFileDialog();
            this.edTimestampServer = new System.Windows.Forms.TextBox();
            this.cbTimestamp = new System.Windows.Forms.CheckBox();
            this.label1 = new System.Windows.Forms.Label();
            this.cbLevel = new System.Windows.Forms.ComboBox();
            this.btnBrowseCert = new System.Windows.Forms.Button();
            this.edCertPassword = new System.Windows.Forms.TextBox();
            this.edSigningCertificate = new System.Windows.Forms.TextBox();
            this.lCertPassword = new System.Windows.Forms.Label();
            this.label6 = new System.Windows.Forms.Label();
            this.cbHashAlgorithm = new System.Windows.Forms.ComboBox();
            this.label4 = new System.Windows.Forms.Label();
            this.edInputFile = new System.Windows.Forms.TextBox();
            this.btnInputFile = new System.Windows.Forms.Button();
            this.label3 = new System.Windows.Forms.Label();
            this.cbDetached = new System.Windows.Forms.CheckBox();
            this.label5 = new System.Windows.Forms.Label();
            this.groupBox1 = new System.Windows.Forms.GroupBox();
            this.groupBox1.SuspendLayout();
            this.SuspendLayout();
            // 
            // btnSign
            // 
            this.btnSign.Location = new System.Drawing.Point(567, 235);
            this.btnSign.Name = "btnSign";
            this.btnSign.Size = new System.Drawing.Size(75, 25);
            this.btnSign.TabIndex = 8;
            this.btnSign.Text = "Sign";
            this.btnSign.Click += new System.EventHandler(this.btnSign_Click);
            // 
            // edOutputFile
            // 
            this.edOutputFile.Location = new System.Drawing.Point(70, 65);
            this.edOutputFile.Name = "edOutputFile";
            this.edOutputFile.Size = new System.Drawing.Size(266, 20);
            this.edOutputFile.TabIndex = 3;
            // 
            // btnOutputFile
            // 
            this.btnOutputFile.Location = new System.Drawing.Point(342, 62);
            this.btnOutputFile.Name = "btnOutputFile";
            this.btnOutputFile.Size = new System.Drawing.Size(75, 25);
            this.btnOutputFile.TabIndex = 4;
            this.btnOutputFile.Text = "Browse ...";
            this.btnOutputFile.Click += new System.EventHandler(this.btnOutputFile_Click);
            // 
            // label2
            // 
            this.label2.AutoSize = true;
            this.label2.Location = new System.Drawing.Point(8, 68);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(58, 13);
            this.label2.TabIndex = 18;
            this.label2.Text = "Output file:";
            // 
            // edTimestampServer
            // 
            this.edTimestampServer.Location = new System.Drawing.Point(13, 101);
            this.edTimestampServer.Name = "edTimestampServer";
            this.edTimestampServer.Size = new System.Drawing.Size(318, 20);
            this.edTimestampServer.TabIndex = 5;
            this.edTimestampServer.Text = "http://";
            // 
            // cbTimestamp
            // 
            this.cbTimestamp.Location = new System.Drawing.Point(13, 78);
            this.cbTimestamp.Name = "cbTimestamp";
            this.cbTimestamp.Size = new System.Drawing.Size(244, 17);
            this.cbTimestamp.TabIndex = 4;
            this.cbTimestamp.Text = "Request a timestamp from TSA server:";
            // 
            // label1
            // 
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(431, 27);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(36, 13);
            this.label1.TabIndex = 34;
            this.label1.Text = "Level:";
            // 
            // cbLevel
            // 
            this.cbLevel.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
            this.cbLevel.FormattingEnabled = true;
            this.cbLevel.Items.AddRange(new object[] {
            "BaselineB",
            "BaselineT",
            "BaselineLT",
            "BaselineLTA",
            "BES",
            "EPES",
            "T",
            "C",
            "X",
            "XType1",
            "XType2",
            "XL",
            "XLType1",
            "XLType2",
            "A",
            "ExtendedBES",
            "ExtendedEPES",
            "ExtendedT",
            "ExtendedC",
            "ExtendedX",
            "ExtendedXType1",
            "ExtendedXType2",
            "ExtendedXLong",
            "ExtendedXL",
            "ExtendedXLType1",
            "ExtendedXLType2 ",
            "ExtendedA"});
            this.cbLevel.Location = new System.Drawing.Point(473, 24);
            this.cbLevel.Name = "cbLevel";
            this.cbLevel.Size = new System.Drawing.Size(154, 21);
            this.cbLevel.TabIndex = 6;
            // 
            // btnBrowseCert
            // 
            this.btnBrowseCert.Location = new System.Drawing.Point(337, 21);
            this.btnBrowseCert.Name = "btnBrowseCert";
            this.btnBrowseCert.Size = new System.Drawing.Size(75, 25);
            this.btnBrowseCert.TabIndex = 2;
            this.btnBrowseCert.Text = "Browse ...";
            this.btnBrowseCert.Click += new System.EventHandler(this.btnBrowseCert_Click);
            // 
            // edCertPassword
            // 
            this.edCertPassword.Location = new System.Drawing.Point(110, 51);
            this.edCertPassword.Name = "edCertPassword";
            this.edCertPassword.PasswordChar = '*';
            this.edCertPassword.Size = new System.Drawing.Size(191, 20);
            this.edCertPassword.TabIndex = 3;
            // 
            // edSigningCertificate
            // 
            this.edSigningCertificate.Location = new System.Drawing.Point(110, 24);
            this.edSigningCertificate.Name = "edSigningCertificate";
            this.edSigningCertificate.Size = new System.Drawing.Size(221, 20);
            this.edSigningCertificate.TabIndex = 1;
            // 
            // lCertPassword
            // 
            this.lCertPassword.AutoSize = true;
            this.lCertPassword.Location = new System.Drawing.Point(48, 54);
            this.lCertPassword.Name = "lCertPassword";
            this.lCertPassword.Size = new System.Drawing.Size(56, 13);
            this.lCertPassword.TabIndex = 40;
            this.lCertPassword.Text = "Password:";
            // 
            // label6
            // 
            this.label6.AutoSize = true;
            this.label6.Location = new System.Drawing.Point(10, 27);
            this.label6.Name = "label6";
            this.label6.Size = new System.Drawing.Size(94, 13);
            this.label6.TabIndex = 44;
            this.label6.Text = "Signing certificate:";
            // 
            // cbHashAlgorithm
            // 
            this.cbHashAlgorithm.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
            this.cbHashAlgorithm.Items.AddRange(new object[] {
            "SHA1",
            "MD5",
            "SHA256",
            "SHA384",
            "SHA512",
            "RIPEMD160"});
            this.cbHashAlgorithm.Location = new System.Drawing.Point(473, 51);
            this.cbHashAlgorithm.Name = "cbHashAlgorithm";
            this.cbHashAlgorithm.Size = new System.Drawing.Size(154, 21);
            this.cbHashAlgorithm.TabIndex = 7;
            // 
            // label4
            // 
            this.label4.AutoSize = true;
            this.label4.Location = new System.Drawing.Point(387, 54);
            this.label4.Name = "label4";
            this.label4.Size = new System.Drawing.Size(80, 13);
            this.label4.TabIndex = 54;
            this.label4.Text = "Hash algorithm:";
            // 
            // edInputFile
            // 
            this.edInputFile.Location = new System.Drawing.Point(70, 36);
            this.edInputFile.Name = "edInputFile";
            this.edInputFile.Size = new System.Drawing.Size(266, 20);
            this.edInputFile.TabIndex = 1;
            // 
            // btnInputFile
            // 
            this.btnInputFile.Location = new System.Drawing.Point(342, 33);
            this.btnInputFile.Name = "btnInputFile";
            this.btnInputFile.Size = new System.Drawing.Size(75, 25);
            this.btnInputFile.TabIndex = 2;
            this.btnInputFile.Text = "Browse ...";
            this.btnInputFile.Click += new System.EventHandler(this.btnInputFile_Click);
            // 
            // label3
            // 
            this.label3.AutoSize = true;
            this.label3.Location = new System.Drawing.Point(16, 39);
            this.label3.Name = "label3";
            this.label3.Size = new System.Drawing.Size(50, 13);
            this.label3.TabIndex = 56;
            this.label3.Text = "Input file:";
            // 
            // cbDetached
            // 
            this.cbDetached.Location = new System.Drawing.Point(473, 78);
            this.cbDetached.Name = "cbDetached";
            this.cbDetached.Size = new System.Drawing.Size(89, 17);
            this.cbDetached.TabIndex = 8;
            this.cbDetached.Text = "Detached";
            // 
            // label5
            // 
            this.label5.ForeColor = System.Drawing.SystemColors.Highlight;
            this.label5.Location = new System.Drawing.Point(5, 5);
            this.label5.Name = "label5";
            this.label5.Size = new System.Drawing.Size(637, 13);
            this.label5.TabIndex = 60;
            this.label5.Text = "This sample shows how to create CAdES signatures. Please select an input file, tu" +
    "ne up the signing options, and click \'Sign\'.";
            // 
            // groupBox1
            // 
            this.groupBox1.Controls.Add(this.cbTimestamp);
            this.groupBox1.Controls.Add(this.edTimestampServer);
            this.groupBox1.Controls.Add(this.cbLevel);
            this.groupBox1.Controls.Add(this.label1);
            this.groupBox1.Controls.Add(this.label4);
            this.groupBox1.Controls.Add(this.cbDetached);
            this.groupBox1.Controls.Add(this.cbHashAlgorithm);
            this.groupBox1.Controls.Add(this.label6);
            this.groupBox1.Controls.Add(this.lCertPassword);
            this.groupBox1.Controls.Add(this.edSigningCertificate);
            this.groupBox1.Controls.Add(this.btnBrowseCert);
            this.groupBox1.Controls.Add(this.edCertPassword);
            this.groupBox1.Location = new System.Drawing.Point(5, 95);
            this.groupBox1.Name = "groupBox1";
            this.groupBox1.Size = new System.Drawing.Size(635, 134);
            this.groupBox1.TabIndex = 5;
            this.groupBox1.TabStop = false;
            this.groupBox1.Text = "Signing options  ";
            // 
            // MainForm
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(644, 265);
            this.Controls.Add(this.groupBox1);
            this.Controls.Add(this.label5);
            this.Controls.Add(this.edInputFile);
            this.Controls.Add(this.btnInputFile);
            this.Controls.Add(this.label3);
            this.Controls.Add(this.edOutputFile);
            this.Controls.Add(this.btnOutputFile);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.btnSign);
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
            this.MaximizeBox = false;
            this.Name = "MainForm";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "CAdES Signer Demo";
            this.groupBox1.ResumeLayout(false);
            this.groupBox1.PerformLayout();
            this.ResumeLayout(false);
            this.PerformLayout();

        }
        #endregion

        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.Run(new MainForm());
        }

        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 void btnSign_Click(object sender, System.EventArgs e)
        {
            signer.InputFile = edInputFile.Text;
            signer.OutputFile = edOutputFile.Text;

            signer.Detached = cbDetached.Checked;

            signer.NewSignature.HashAlgorithm = cbHashAlgorithm.Text;
            signer.NewSignature.Level = (AdESSignatureLevels)(cbLevel.SelectedIndex + 2);

            signer.SigningCertificate = LoadCertificate(edSigningCertificate.Text, edCertPassword.Text);

            if (cbTimestamp.Checked)
                signer.TimestampServer = edTimestampServer.Text;
            else
                signer.TimestampServer = "";

            signer.IgnoreChainValidationErrors = true;

            try
            {
                signer.Sign();

                MessageBox.Show("The file(s) successfully signed");
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

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

        private void btnBrowseCert_Click(object sender, EventArgs e)
        {
            if (dlgOpen.ShowDialog() == DialogResult.OK)
                edSigningCertificate.Text = dlgOpen.FileName;
        }

        private void btnOutputFile_Click(object sender, EventArgs e)
        {
            dlgSave.FileName = edOutputFile.Text;
            if (dlgSave.ShowDialog() == DialogResult.OK)
                edOutputFile.Text = dlgSave.FileName;
        }
        
        private void btnInputFile_Click(object sender, EventArgs e)
        {
            if (dlgOpen.ShowDialog() == DialogResult.OK)
                edInputFile.Text = dlgOpen.FileName;
        }
    }
}