/// <summary>
/// Exports all clipboarder entries to database
/// </summary>
public void ExportEntries()
{
List <TextContent> textContents = view.GetAllTextContent();
List <ImageContent> imageContents = view.GetAllImageContent();
if (textContents.Count == 0 && imageContents.Count == 0)
{
MessageBox.Show("No entries to save.", "Clipboarder",
MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
AskPasswordEncrypt askPassword = new AskPasswordEncrypt(this);
DialogResult result = askPassword.ShowDialog();
// Uses DatabaseOperations class object to connect and write to database Clipboarder.Extension
DatabaseOperations dbOperations = new DatabaseOperations();
if (result == DialogResult.OK)
{
if (!File.Exists(System.IO.Path.Combine(Application.StartupPath, databaseName)))
{
//Creates new Database
DatabaseOperations.CreatesNewDatabase(databaseName);
Properties.Settings.Default.doesDatabaseExists = true;
}
// Connects to database and opens connection
try {
dbOperations = new DatabaseOperations();
dbOperations.ConnectDatabase(databaseName);
dbOperations.OpenConnection();
} catch (Exception ex) {
MessageBox.Show("Error connecting database. \n\nOperation aborted.\n" + ex.ToString(),
"Clipboarder Error", MessageBoxButtons.OK, MessageBoxIcon.Stop);
dbOperations.CloseConnection();
return;
}
User user = new User(dbOperations);
if (user.CurrentUserHasID())
{
user.GetCurrentUserID();
}
DatabaseReadWrite dbContents = new DatabaseReadWrite(dbOperations, user);
// Deletes existing content for current user if corresponding record exists in userTable
if (user.CurrentUserHasID())
{
try {
//dbContents.clearAllContent();
dbContents.DeleteAllRecordsForCurrentUsers();
user.DeleteEntry();
user.CreateEntry(BCrypt.HashPassword(password, BCrypt.GenerateSalt(10)));
user.GetCurrentUserID();
} catch (Exception ex) {
DialogResult messageResult =
MessageBox.Show("Error deleting existing records from database.\n"
+ "\n\nDo you want to continue?.", "Clipboarder Error",
MessageBoxButtons.YesNo, MessageBoxIcon.Stop);
dbOperations.CloseConnection();
if (messageResult == DialogResult.No)
{
return;
}
}
}
else
{
// Hashes password using BCrypt Class and adds new record to userName table in database
try {
user.CreateEntry(BCrypt.HashPassword(password, BCrypt.GenerateSalt(10)));
user.GetCurrentUserID();
} catch (Exception ex) {
MessageBox.Show("Error adding current user record to database." + ex.ToString()
+ "\n\nOperation aborted.\n", "Clipboarder Error", MessageBoxButtons.OK,
MessageBoxIcon.Stop);
dbOperations.CloseConnection();
return;
}
}
// Resets progress status in view
view.ProgressVisibility = true;
view.TaskProgress = 0;
//-------------------------------------------------------------
// Exports text Entries
textContents.ForEach(content => {
// Sets task progress
view.TaskProgress = (100 / textContents.Count) * (content.index);
EncryptedTextContent encryptedContent =
ContentEncryption.EncryptTextContent(content, password);
// Inserts content to database
try {
dbContents.SetTextContent(encryptedContent);
} catch (Exception ex) {
MessageBox.Show("Error adding content to database. \n\nOperation aborted.\n"
+ ex.ToString(), "Clipboarder Error", MessageBoxButtons.OK, MessageBoxIcon.Stop);
dbOperations.CloseConnection();
return;
}
});
view.TaskProgress = 0;
//-------------------------------------------------------------
// Exports image Entries
imageContents.ForEach(content => {
// Sets task progress
view.TaskProgress = (100 / imageContents.Count) * (content.index);
EncryptedImageContent encryptedContent =
ContentEncryption.EncryptImageContent(content, password);
// Inserts content to database
try {
dbContents.SetImageContent(encryptedContent);
} catch (Exception ex) {
MessageBox.Show("Error adding content to database. \n\nOperation aborted.\n"
+ ex.ToString(), "Clipboarder Error", MessageBoxButtons.OK, MessageBoxIcon.Stop);
dbOperations.CloseConnection();
return;
}
});
view.TaskProgress = 0;
view.ProgressVisibility = false;
view.status = "Export Completed";
dbOperations.CloseConnection();
}
password = null;
}
}
/// <summary>
/// Import and populates CLipboarder grid with entries from database
/// using DatabaseOperations, DatabaseReadWrite and User class
/// </summary>
private void ImportAndDisplayEntries()
{
if (!File.Exists(Path.Combine(Application.StartupPath, "contents.db")))
{
MessageBox.Show("No content to load." + "\n\n" + "Use Menu > Save Content to save entries.",
"Clipboarder", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
// Creates DatabaseOperations object to perform operations on specified database
DatabaseOperations dbOperations = new DatabaseOperations();
// Connects to database and opens connection
try {
dbOperations = new DatabaseOperations();
dbOperations.ConnectDatabase(databaseName);
dbOperations.OpenConnection();
} catch (Exception ex) {
MessageBox.Show("Error connecting database, database does not exists or is unreachable."
+ ex.Message + "\n\nOperation aborted.\n", "Clipboarder Error",
MessageBoxButtons.OK, MessageBoxIcon.Stop);
view.status = "Error";
dbOperations.CloseConnection();
return;
}
User user = new User(dbOperations);
user.GetCurrentUserID();
// Shows AskPasswordDecrypt form to ask user for password,
// this call also passes hashed password from the database
// to inform user for incorrect password.
AskPasswordDecrypt askPassword = new AskPasswordDecrypt(this, user.GetUserPassword());
DialogResult result = askPassword.ShowDialog();
// If DialogResult.OK == true then AskPasswordDialog will provide password to
// password field in MainFormPresenter instance earlier passed in constructor
if (result != DialogResult.OK)
{
dbOperations.CloseConnection();
return;
}
// Checks equality of password provided and stored
if (!user.CurrentUserHasID())
{
MessageBox.Show("Content for current user doesn't exists.\n\nOperation aborted.\n",
"Clipboarder Error", MessageBoxButtons.OK, MessageBoxIcon.Stop);
dbOperations.CloseConnection();
return;
}
else
{
view.ClearAll();
DatabaseReadWrite dbContent = new DatabaseReadWrite(dbOperations, user);
try {
view.status = "Reading text from database";
List <EncryptedTextContent> encryptedList = dbContent.GetTextData();
List <TextContent> outputList = new List <TextContent>();
// Resets progress
view.ProgressVisibility = true;
view.TaskProgress = 0;
// Decrypts and adds text content to textDataGrid
encryptedList.ForEach((encryptedContent) => {
view.TaskProgress = (100 / encryptedList.Count) * encryptedContent.index;
TextContent contentToAdd =
ContentEncryption.DecryptTextContent(encryptedContent, password);
view.AddNewTextRow(contentToAdd);
});
view.TaskProgress = 0;
} catch (Exception ex) {
MessageBox.Show("Error filling table with values.\n\n\nOperation aborted." + Environment.NewLine,
"Clipboarder Error", MessageBoxButtons.OK, MessageBoxIcon.Stop);
view.status = "Error";
dbOperations.CloseConnection();
return;
}
try {
view.status = "Reading images from database.";
List <EncryptedImageContent> encryptedList = dbContent.GetImageData();
List <ImageContent> outputList = new List <ImageContent>();
//progress bar values
view.TaskProgress = 0;
view.ProgressVisibility = true;
// Decrypts image content
encryptedList.ForEach(encryptedContent => {
view.TaskProgress = (100 / encryptedList.Count) * encryptedContent.index;
ImageContent contentToAdd =
ContentEncryption.DecryptImageContent(encryptedContent, password);
view.AddNewImageRow(contentToAdd);
});
view.TaskProgress = 0;
} catch (Exception) {
MessageBox.Show("Error filling table with values.\n\n\nOperation aborted.\n",
"Clipboarder Error", MessageBoxButtons.OK, MessageBoxIcon.Stop);
view.status = "Error";
dbOperations.CloseConnection();
return;
}
}
view.status = "Imported successfully";
view.ProgressVisibility = false;
dbOperations.CloseConnection();
} // Else statement for check on file existence
password = "";
}
