/*
* public void getLastAddedElement() {
*
* SqlConnection connection = new SqlConnection(connectionString);
* connection.Open();
* string queryString = "select password from Rainbow where id = (select max(id) from Rainbow)";
* SqlCommand command = new SqlCommand(queryString, connection);
* command.CommandText = queryString;
*
* Console.WriteLine(command.ExecuteScalar().ToString());
*
* connection.Close();
*
* }*/
//inserts n rows
public void InsertRowsTransaction(int n)
{
SqlConnection connection = new SqlConnection();
connection.ConnectionString = connectionString;
SqlCommand command = new SqlCommand();
command.Connection = connection;
for (int j = 0; j < arrangements.Count - n; j += n)
{
connection.Open();
try
{
SqlTransaction transaction = command.Connection.BeginTransaction("Transaction");
command.Transaction = transaction;
for (int i = j; i < j + n; i++)
{
string md5hash = HashesClass.computeHash(arrangements[i], "MD5");
string sha1hash = HashesClass.computeHash(arrangements[i], "SHA1");
string sha2hash = HashesClass.computeHash(arrangements[i], "SHA256");
string queryString =
"INSERT INTO Rainbow(password, md5hash, sha1hash, sha2hash) VALUES('" +
arrangements[i] + "', '" + md5hash + "', '" + sha1hash + "', '" + sha2hash + "')";
command.CommandText = queryString;
command.ExecuteNonQuery();
// Console.WriteLine(arrangements[i]);
}
transaction.Commit();
transaction.Dispose();
connection.Close();
Console.WriteLine("All " + n + " rows written to db");
// inside try
}
catch (Exception ex)
{
Console.WriteLine("Commit Exception Type: {0}", ex.GetType());
Console.WriteLine(" Message: {0}", ex.Message);
// command.Transaction.Rollback();
}
finally
{
connection.Close();
}
}
}
/*
* public void BulkInsertXml(int bufferSize) {
*
* bufferSize = 5;
*
*
* XmlWriter xmlWriter = XmlWriter.Create("rainbow.xml");
* xmlWriter.WriteStartDocument();
* xmlWriter.WriteStartElement("hashings");
* int i = 0;
* int count = arrangements.Count();
* while (i == 0) {
*
* for (int j = i; j < i+ bufferSize; j++) {
* string md5hash = HashesClass.computeHash(arrangements[j], "MD5");
* string sha1hash = HashesClass.computeHash(arrangements[j], "SHA1");
* string sha2hash = HashesClass.computeHash(arrangements[j], "SHA256");
* xmlWriter.WriteStartElement("hashing");
* xmlWriter.WriteAttributeString("password", arrangements[j]);
* xmlWriter.WriteAttributeString("md5hash", md5hash);
* xmlWriter.WriteAttributeString("sha1hash", sha1hash);
* xmlWriter.WriteAttributeString("sha2hash", sha2hash);
* xmlWriter.WriteEndElement();
*
* }
*
* i += bufferSize;
* xmlWriter.WriteEndElement();
* xmlWriter.WriteEndDocument();
* xmlWriter.Close();
*
* var doc = XDocument.Load("rainbow.xml");
*
* DataTable dt = new DataTable();
* dt.Columns.Add(new DataColumn("password"));
* dt.Columns.Add(new DataColumn("md5hash"));
* dt.Columns.Add(new DataColumn("sha1hash"));
* dt.Columns.Add(new DataColumn("sha2hash"));
* doc.Descendants("hashings").ToList().ForEach(e=>Console.WriteLine(e.Attribute("password").Value));
*
* var rows = doc.Descendants("hashing").Select(el => {
* DataRow row = dt.NewRow();
* row["password"] = el.Attribute("password").Value;
* row["md5hash"] = el.Attribute("md5hash").Value;
* row["sha1hash"] = el.Attribute("sha1hash").Value;
* row["sha2hash"] = el.Attribute("sha2hash").Value;
* return row;
* });
* dt.Rows.Add(rows);
* Console.WriteLine((dt.Rows[0]["password"]).ToString());
*
* SqlConnection connection = new SqlConnection(connectionString);
* connection.Open();
* using (var bcp = new SqlBulkCopy(connection))
* {
*
*
* SqlBulkCopyColumnMapping mapPass =
* new SqlBulkCopyColumnMapping("password", "password");
* bcp.ColumnMappings.Add(mapPass);
*
* SqlBulkCopyColumnMapping mapMd5 =
* new SqlBulkCopyColumnMapping("md5hash", "md5hash");
* bcp.ColumnMappings.Add(mapMd5);
*
* SqlBulkCopyColumnMapping mapSha1 =
* new SqlBulkCopyColumnMapping("sha1hash", "sha1hash");
* bcp.ColumnMappings.Add(mapSha1);
*
* SqlBulkCopyColumnMapping mapSha2 =
* new SqlBulkCopyColumnMapping("sha2hash", "sha2hash");
* bcp.ColumnMappings.Add(mapSha2);
*
*
* bcp.BatchSize = bufferSize;
* bcp.DestinationTableName = "Rainbow";
* bcp.WriteToServer(dt);
* }
*
* connection.Close();
*
*
*
*
* }
* }
*/
public void BulkInsert()
{
DataTable dt = new DataTable();
dt.Columns.Add("password");
dt.Columns.Add("md5hash");
dt.Columns.Add("sha1hash");
dt.Columns.Add("sha2hash");
for (int i = 0; i < arrangements.Count; i++)
{
DataRow row = dt.NewRow();
row["password"] = arrangements[i];
row["md5hash"] = HashesClass.computeHash(arrangements[i], "MD5");
row["sha1hash"] = HashesClass.computeHash(arrangements[i], "SHA1");
row["sha2hash"] = HashesClass.computeHash(arrangements[i], "SHA256");
dt.Rows.Add(row);
// Console.WriteLine(arrangements[i]);
}
Console.WriteLine("finished creating data table");
SqlConnection connection = new SqlConnection(connectionString);
connection.Open();
using (var bcp = new SqlBulkCopy(connection)) {
SqlBulkCopyColumnMapping mapPass =
new SqlBulkCopyColumnMapping("password", "password");
bcp.ColumnMappings.Add(mapPass);
SqlBulkCopyColumnMapping mapMd5 =
new SqlBulkCopyColumnMapping("md5hash", "md5hash");
bcp.ColumnMappings.Add(mapMd5);
SqlBulkCopyColumnMapping mapSha1 =
new SqlBulkCopyColumnMapping("sha1hash", "sha1hash");
bcp.ColumnMappings.Add(mapSha1);
SqlBulkCopyColumnMapping mapSha2 =
new SqlBulkCopyColumnMapping("sha2hash", "sha2hash");
bcp.ColumnMappings.Add(mapSha2);
bcp.BatchSize = 100;
bcp.DestinationTableName = "Rainbow";
bcp.WriteToServer(dt);
}
connection.Close();
}
static void Main(string[] args)
{
Insertions ins = new Insertions(5);
PerformanceMeasurements.RunWithMeasurements(ins.LoadIntoDatabase, Insertions.Loading.InsertOneByOne);
Stopwatch watch = new Stopwatch();
watch.Start();
Console.WriteLine(HashesClass.ReverseHash("79a5d99c57bc9556dc76d3605f103e66", "MD5"));
Console.WriteLine("Time elapsed while getting password: "******"Time elapsed while inserting all one by one: " + watch.Elapsed);
* watch.Reset();
*/
/*
* watch.Start();
* ins.LoadIntoDatabase(Insertions.Loading.MultipleRows);
* watch.Stop();
* Console.WriteLine("Time elapsed while inserting multiple rows: "+watch.Elapsed);
* watch.Reset();
*/
/*
* watch.Start();
* ins.LoadIntoDatabase(Insertions.Loading.SingleRowMultiple);
* watch.Stop();
* Console.WriteLine("Time elapsed while inserting single row multiple times: ",watch.Elapsed);
* watch.Reset();
*/
/*
* watch.Start();
* ins.LoadIntoDatabase(Insertions.Loading.BulkInsert);
* watch.Stop();
* Console.WriteLine("Time elapsed while bulk-inserting all rows: ", watch.Elapsed);
* Console.WriteLine(watch.Elapsed);
*
* watch.Reset();
*/
}
//inserts all
public void InsertOneByOne()
{
foreach (string password in arrangements)
{
string md5hash = HashesClass.computeHash(password, "MD5");
string sha1hash = HashesClass.computeHash(password, "SHA1");
string sha2hash = HashesClass.computeHash(password, "SHA256");
string queryString =
"INSERT INTO Rainbow(password, md5hash, sha1hash, sha2hash) VALUES('" +
password + "', '" + md5hash + "', '" + sha1hash + "', '" + sha2hash + "')";
SqlConnection connection = new SqlConnection(connectionString);
connection.Open();
SqlCommand command = new SqlCommand(queryString, connection);
command.ExecuteNonQuery();
connection.Close();
}
}
public void InsertMultipleRows(int step = 200)
{
for (int i = 0; i < arrangements.Count; i += step)
{
string queryString = "INSERT INTO Rainbow(password, md5hash, sha1hash, sha2hash) VALUES";
try
{
for (int j = 0; j < step; j++)
{
// Console.WriteLine(arrangements[i + j]);
// Console.WriteLine(queryString);
string md5hash = HashesClass.computeHash(arrangements[i + j], "MD5");
string sha1hash = HashesClass.computeHash(arrangements[i + j], "SHA1");
string sha2hash = HashesClass.computeHash(arrangements[i + j], "SHA256");
queryString += "('" + arrangements[i + j] + "', '" + md5hash + "', '" + sha1hash + "', '" + sha2hash + "'),";
}
}
catch (Exception) {
// index out of bound error
}
queryString = queryString.TrimEnd(',');
SqlConnection connection = new SqlConnection(connectionString);
connection.Open();
SqlCommand command = new SqlCommand(queryString, connection);
command.ExecuteNonQuery();
Console.WriteLine("All " + step + " records are written to database.");
connection.Close();
}
}
