public Version GetInstalledVersion()
{
var products = MsiApi.GetRelatedProducts(UpgradeCode);
if (products.Count == 0)
{
// is it possible and should we worry?
return(new Version("0.0.0"));
}
// can the products count be > 1 and how should we get the right one?
else if (!Version.TryParse(products[0].Version, out var version))
{
// is it possible and what should we do?
return(new Version("0.0.0"));
}
else
{
return(version);
}
}
public bool VerifyPackage(string packagePath)
{
if (!MsiApi.VerifyPackage(packagePath))
{
return(false);
}
var package = new MsiPackage(packagePath);
if (!Guid.TryParse(package.UpgradeCode, out var upgradeCode))
{
// is it possible and what should we do?
return(false);
}
if (upgradeCode != UpgradeCode)
{
return(false);
}
// TODO: implement verification by signature
return(true);
}