/// <summary>
/// Checks if the AppID exists
/// </summary>
/// <param name="appID">The AppID or GUID</param>
/// <returns>True if it exists</returns>
private static bool appidExists(string appID)
{
List <RegistryKey> listRegKeys = new List <RegistryKey>();
listRegKeys.Add(Registry.ClassesRoot.OpenSubKey(@"AppID"));
listRegKeys.Add(Registry.LocalMachine.OpenSubKey(@"Software\Classes\AppID"));
listRegKeys.Add(Registry.CurrentUser.OpenSubKey(@"Software\Classes\AppID"));
if (Utils.Is64BitOS)
{
listRegKeys.Add(Registry.ClassesRoot.OpenSubKey(@"Wow6432Node\AppID"));
listRegKeys.Add(Registry.LocalMachine.OpenSubKey(@"Software\Wow6432Node\Classes\AppID"));
listRegKeys.Add(Registry.CurrentUser.OpenSubKey(@"Software\Wow6432Node\Classes\AppID"));
}
try
{
foreach (RegistryKey rk in listRegKeys)
{
if (rk == null)
{
continue;
}
using (RegistryKey subKey = rk.OpenSubKey(appID))
{
if (subKey != null)
{
if (!ScanDlg.IsOnIgnoreList(subKey.ToString()))
{
return(true);
}
}
}
}
}
catch
{
return(false);
}
return(false);
}
/// <summary>
/// Scans for the CLSID subkey
/// <param name="regKey">Location of CLSID Sub Key</param>
/// </summary>
private static void ScanCLSIDSubKey(RegistryKey regKey)
{
if (regKey == null)
{
return;
}
Main.Logger.WriteLine("Scanning " + regKey.Name + " for invalid CLSID's");
try
{
foreach (string strCLSID in regKey.GetSubKeyNames())
{
RegistryKey rkCLSID = regKey.OpenSubKey(strCLSID);
if (rkCLSID == null)
{
continue;
}
ScanDlg.CurrentScannedObject = rkCLSID.ToString();
// Check for valid AppID
string strAppID = regKey.GetValue("AppID") as string;
if (!string.IsNullOrEmpty(strAppID))
{
if (!appidExists(strAppID))
{
ScanDlg.StoreInvalidKey(Strings.MissingAppID, rkCLSID.ToString(), "AppID");
}
}
// See if DefaultIcon exists
using (RegistryKey regKeyDefaultIcon = rkCLSID.OpenSubKey("DefaultIcon"))
{
if (regKeyDefaultIcon != null)
{
string iconPath = regKeyDefaultIcon.GetValue("") as string;
if (!string.IsNullOrEmpty(iconPath))
{
if (!Utils.IconExists(iconPath))
{
if (!ScanDlg.IsOnIgnoreList(iconPath))
{
ScanDlg.StoreInvalidKey(Strings.InvalidFile, string.Format("{0}\\DefaultIcon", rkCLSID.ToString()));
}
}
}
}
}
// Look for InprocServer files
using (RegistryKey regKeyInprocSrvr = rkCLSID.OpenSubKey("InprocServer"))
{
if (regKeyInprocSrvr != null)
{
string strInprocServer = regKeyInprocSrvr.GetValue("") as string;
if (!string.IsNullOrEmpty(strInprocServer))
{
if (!Utils.FileExists(strInprocServer))
{
ScanDlg.StoreInvalidKey(Strings.InvalidInprocServer, regKeyInprocSrvr.ToString());
}
}
regKeyInprocSrvr.Close();
}
}
using (RegistryKey regKeyInprocSrvr32 = rkCLSID.OpenSubKey("InprocServer32"))
{
if (regKeyInprocSrvr32 != null)
{
string strInprocServer32 = regKeyInprocSrvr32.GetValue("") as string;
if (!string.IsNullOrEmpty(strInprocServer32))
{
if (!Utils.FileExists(strInprocServer32))
{
ScanDlg.StoreInvalidKey(Strings.InvalidInprocServer32, regKeyInprocSrvr32.ToString());
}
}
regKeyInprocSrvr32.Close();
}
}
rkCLSID.Close();
}
}
catch (System.Security.SecurityException ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
}
catch (System.UnauthorizedAccessException ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
}
regKey.Close();
return;
}
/// <summary>
/// Finds invalid File extensions + ProgIDs referenced
/// </summary>
private static void ScanClasses(RegistryKey regKey)
{
if (regKey == null)
{
return;
}
Main.Logger.WriteLine("Scanning " + regKey.Name + " for invalid Classes");
try
{
foreach (string strSubKey in regKey.GetSubKeyNames())
{
// Update scan dialog
ScanDlg.CurrentScannedObject = string.Format("{0}\\{1}", regKey.Name, strSubKey);
// Skip any file (*)
if (strSubKey == "*")
{
continue;
}
if (strSubKey[0] == '.')
{
// File Extension
using (RegistryKey rkFileExt = regKey.OpenSubKey(strSubKey))
{
if (rkFileExt != null)
{
// Find reference to ProgID
string strProgID = rkFileExt.GetValue("") as string;
if (!string.IsNullOrEmpty(strProgID))
{
if (!progIDExists(strProgID))
{
ScanDlg.StoreInvalidKey(Strings.MissingProgID, rkFileExt.ToString());
}
}
}
}
}
else
{
// ProgID or file class
// See if DefaultIcon exists
using (RegistryKey regKeyDefaultIcon = regKey.OpenSubKey(string.Format("{0}\\DefaultIcon", strSubKey)))
{
if (regKeyDefaultIcon != null)
{
string iconPath = regKeyDefaultIcon.GetValue("") as string;
if (!string.IsNullOrEmpty(iconPath))
{
if (!Utils.IconExists(iconPath))
{
if (!ScanDlg.IsOnIgnoreList(iconPath))
{
ScanDlg.StoreInvalidKey(Strings.InvalidFile, regKeyDefaultIcon.Name);
}
}
}
}
}
// Check referenced CLSID
using (RegistryKey rkCLSID = regKey.OpenSubKey(string.Format("{0}\\CLSID", strSubKey)))
{
if (rkCLSID != null)
{
string guid = rkCLSID.GetValue("") as string;
if (!string.IsNullOrEmpty(guid))
{
if (!clsidExists(guid))
{
ScanDlg.StoreInvalidKey(Strings.MissingCLSID, string.Format("{0}\\{1}", regKey.Name, strSubKey));
}
}
}
}
}
// Check for unused progid/extension
using (RegistryKey rk = regKey.OpenSubKey(strSubKey))
{
if (rk != null)
{
if (rk.ValueCount <= 0 && rk.SubKeyCount <= 0)
{
ScanDlg.StoreInvalidKey(Strings.InvalidProgIDFileExt, rk.Name);
}
}
}
}
}
catch (System.Security.SecurityException ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
}
catch (System.UnauthorizedAccessException ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
}
regKey.Close();
return;
}