private void CheckArchiveCrc()
{
if (IgnoreCrc == false)
{
CreateDirectory(_archivePath);
string descriptionFile = _name + XMLEXTENSION;
_cabInfo.ExtractAll(_archivePath, true, null, null);
_xmlDoc.Load(Path.Combine(_archivePath, descriptionFile));
string storedCrc = _xmlDoc.DocumentElement.Attributes[CRC].Value;
XmlNodeList entryList = _xmlDoc.SelectNodes("*/" + ENTRY);
XmlNodeList archiveList = _xmlDoc.SelectNodes("*/" + ARCHIVE);
string[] files = new string[entryList.Count + archiveList.Count];
int index = 0;
for (index = 0; index < entryList.Count; index++)
{
files[index] = Path.Combine(_archivePath, entryList[index].Attributes[NAME].Value);
}
for (int t = 0; t < archiveList.Count; t++)
{
files[index + t] = Path.Combine(_archivePath, archiveList[t].Attributes[NAME].Value);
}
string actualCrc = CompFileCrc(files);
if (storedCrc != actualCrc)
{
throw new CryptographicException("CRC does not match, file has been tampered with !");
}
}
}
public static string ExtractMediaStream(Database msiDb)
{
string tempFileName = Path.GetTempFileName();
string tempFolder = GetTempFolder(tempFileName);
string filePath = Path.ChangeExtension(tempFileName, ".cab");
string str4 = (string)msiDb.ExecuteScalar("SELECT `Cabinet` FROM `Media` WHERE `DiskId` = {0}", new object[] { 1 });
using (View view = msiDb.OpenView("SELECT `Name`, `Data` FROM `_Streams` WHERE `Name` = '{0}'", new object[] { str4.Substring(1) }))
{
view.Execute();
Record record = view.Fetch();
if (record == null)
{
throw new InstallerException("Stream not found: " + str4);
}
using (record)
{
record.GetStream("Data", filePath);
}
}
CabinetInfo info = new CabinetInfo(filePath);
info.ExtractAll(tempFolder);
info.Delete();
return(tempFolder);
}