/// <summary>
/// Adds a unit to the sensor pool related to the given biometric database.
/// </summary>
public static void RemoveUnit(Guid databaseId, int unitId)
{
var unitSchema = WinBio.EnumBiometricUnits(WinBioBiometricType.Fingerprint).Single(_ => _.UnitId == unitId);
var unitName = string.Format(UnitKeyName, unitSchema.DeviceInstanceId);
using (var unitKey = Registry.LocalMachine.OpenSubKey(unitName, true))
{
if (unitKey == null)
{
throw new Exception("wtf");
}
foreach (var confName in unitKey.GetSubKeyNames())
{
int number;
if (!int.TryParse(confName, out number))
{
continue;
}
var config = new WinBioSensorKey();
using (var confKey = unitKey.OpenSubKey(confName))
{
config.Read(confKey);
}
// there should be only one but we will remove all anyway
if (config.DatabaseId == databaseId)
{
unitKey.DeleteSubKey(confName);
}
}
}
}
/// <summary>
/// Adds a unit to the sensor pool related to the given biometric database.
/// </summary>
public static void AddUnit(Guid databaseId, int unitId)
{
var unitSchema = WinBio.EnumBiometricUnits(WinBioBiometricType.Fingerprint).Single(_ => _.UnitId == unitId);
var unitName = string.Format(UnitKeyName, unitSchema.DeviceInstanceId);
var highest = -1;
WinBioSensorKey newConfig = null;
using (var unitKey = Registry.LocalMachine.OpenSubKey(unitName, true))
{
if (unitKey == null)
{
throw new Exception("wtf");
}
foreach (var confName in unitKey.GetSubKeyNames())
{
int number;
if (!int.TryParse(confName, out number))
{
continue;
}
if (number > highest)
{
highest = number;
}
if (newConfig != null)
{
continue;
}
var config = new WinBioSensorKey();
using (var confKey = unitKey.OpenSubKey(confName))
{
config.Read(confKey);
}
if (config.SystemSensor == 1)
{
newConfig = config;
}
}
if (newConfig == null || highest < 0)
{
throw new Exception("dafuq");
}
// write to registry at the next highest free number
highest++;
newConfig.DatabaseId = databaseId;
newConfig.SystemSensor = 0;
using (var confKey = unitKey.CreateSubKey(highest.ToString()))
{
newConfig.Write(confKey);
}
}
}
/// <summary>
/// Removes the given biometric database and all its data.
/// Also removes all units from the corresponding sensor pool.
/// </summary>
public static void RemoveDatabase(Guid databaseId)
{
// find database, throws if not found
var database = WinBio.EnumDatabases(WinBioBiometricType.Fingerprint).Single(_ => _.DatabaseId == databaseId);
// delete template file, throws if not authorized
if (File.Exists(database.FilePath))
{
File.Delete(database.FilePath);
}
// erase sensor configurations for this database
foreach (var unitSchema in WinBio.EnumBiometricUnits(WinBioBiometricType.Fingerprint))
{
var unitName = string.Format(UnitKeyName, unitSchema.DeviceInstanceId);
using (var unitKey = Registry.LocalMachine.OpenSubKey(unitName, true))
{
if (unitKey == null)
{
continue;
}
foreach (var confName in unitKey.GetSubKeyNames())
{
int number;
if (!int.TryParse(confName, out number))
{
continue;
}
var config = new WinBioSensorKey();
using (var confKey = unitKey.OpenSubKey(confName))
{
config.Read(confKey);
}
if (config.DatabaseId == databaseId)
{
unitKey.DeleteSubKey(confName);
}
}
}
}
// erase database configuration from registry
using (var databasesKey = Registry.LocalMachine.OpenSubKey(DatabaseKeyName, true))
{
if (databasesKey == null)
{
throw new Exception("wat?");
}
databasesKey.DeleteSubKey(KeyGuid(databaseId));
}
}
/// <summary>
/// Adds a new biometric database compatible to the given unit.
/// Throws an exception if the database already exists.
/// </summary>
public static void AddDatabase(Guid databaseId, int unitId)
{
// throw exception if the database already exists
var databases = WinBio.EnumDatabases(WinBioBiometricType.Fingerprint);
if (databases.Any(_ => _.DatabaseId == databaseId))
{
throw new WinBioException(string.Format("Database already exists: {0}", databaseId));
}
// get first system sensor config for the given unitId
var unitSchema = WinBio.EnumBiometricUnits(WinBioBiometricType.Fingerprint).Single(_ => _.UnitId == unitId);
var unitName = string.Format(UnitKeyName, unitSchema.DeviceInstanceId);
WinBioSensorKey systemSensorConfig = null;
using (var unitKey = Registry.LocalMachine.OpenSubKey(unitName, true))
{
if (unitKey == null)
{
throw new Exception("wtf");
}
foreach (var confName in unitKey.GetSubKeyNames())
{
int number;
if (!int.TryParse(confName, out number))
{
continue;
}
var config = new WinBioSensorKey();
using (var confKey = unitKey.OpenSubKey(confName))
{
config.Read(confKey);
}
if (config.SystemSensor == 1)
{
systemSensorConfig = config;
break;
}
}
}
if (systemSensorConfig == null)
{
throw new Exception("dafuq");
}
// get the corresponding database
var database = databases.Single(_ => _.DatabaseId == systemSensorConfig.DatabaseId);
// create new compatible database
var newDatabase = new WinBioDatabaseKey(database);
// write database configuration to registry
using (var databasesKey = Registry.LocalMachine.OpenSubKey(DatabaseKeyName, true))
{
if (databasesKey == null)
{
throw new Exception("wat?");
}
using (var newKey = databasesKey.CreateSubKey(KeyGuid(databaseId)))
{
newDatabase.Write(newKey);
}
}
}
/// <summary>
/// Removes the given biometric database and all its data.
/// Also removes all units from the corresponding sensor pool.
/// </summary>
public static void RemoveDatabase(Guid databaseId)
{
// find database, throws if not found
var database = WinBio.EnumDatabases(WinBioBiometricType.Fingerprint).Single(_ => _.DatabaseId == databaseId);
// delete template file, throws if not authorized
// make sure to grant permissions to folder C:\WINDOWS\SYSTEM32\WINBIODATABASE or similar in your machine
// get ownership of the folder WINBIODATABASE then grant full control for your user
if (File.Exists(database.FilePath))
{
File.Delete(database.FilePath);
}
else
{
// For 32-bits process running in 64 bits OS
//string windowsPath = Environment.GetFolderPath(Environment.SpecialFolder.Windows);
string windowsPath = @"c:\windows";
string filePath = string.Format(@"{0}\SYSTEM32", windowsPath);
string filePathSysNative = string.Format(@"{0}\SysNative", windowsPath);
if (File.Exists(database.FilePath.Replace(filePath, filePathSysNative)))
{
File.Delete(database.FilePath.Replace(filePath, filePathSysNative));
}
}
// erase sensor configurations for this database
foreach (var unitSchema in WinBio.EnumBiometricUnits(WinBioBiometricType.Fingerprint))
{
var unitName = string.Format(UnitKeyName, unitSchema.DeviceInstanceId);
using (var unitKey = Registry.LocalMachine.OpenSubKey(unitName, true))
{
if (unitKey == null)
{
continue;
}
foreach (var confName in unitKey.GetSubKeyNames())
{
int number;
if (!int.TryParse(confName, out number))
{
continue;
}
var config = new WinBioSensorKey();
using (var confKey = unitKey.OpenSubKey(confName))
{
config.Read(confKey);
}
if (config.DatabaseId == databaseId)
{
unitKey.DeleteSubKey(confName);
}
}
}
}
// erase database configuration from registry
using (var databasesKey = Registry.LocalMachine.OpenSubKey(DatabaseKeyName, true))
{
if (databasesKey == null)
{
throw new Exception("wat?");
}
databasesKey.DeleteSubKey(KeyGuid(databaseId));
}
}
