public static bool IsLicenseVerify(string lic)
{
Debug.Assert(!string.IsNullOrEmpty(lic));
try
{
var mask = lic.Substring(0, 8);
if (mask.StartsWith("d")) // demo
{
int seconds = Convert.ToInt32(mask.Substring(2)); // seconds
return(Global.Config.InstallTime < DateTime.Now.AddSeconds(-seconds));
}
else if (mask.StartsWith("s")) // single
{
var mid = new bfbd.Common.License.MachineInfo().GetMachineId(bfbd.Common.License.HardwareType.Driver);
var md5 = bfbd.Common.Encryption.MD5(mid, "bfbd");
ulong val = Convert.ToUInt32(md5.Substring(0, 8), 16);
val ^= Convert.ToUInt32(md5.Substring(8, 8), 16);
val ^= Convert.ToUInt32(md5.Substring(16, 8), 16);
val ^= Convert.ToUInt32(md5.Substring(24, 8), 16);
return(mask.Substring(1) == string.Format("{0:X8}", val).Substring(1));
}
else
{
return(false);
}
}
catch (Exception ex)
{
TraceLogger.Instance.WriteException(ex);
return(false);
}
}
public bool IsValid()
{
switch (License)
{
case LicenseType.Demo:
{
return(CreateTime < DateTime.Now && DateTime.Now < ExpireTime);
}
case LicenseType.Professional:
{
// check MachineId to local driver.
string mid = new MachineInfo().GetMachineId(HardwareType.Driver);
if (MachineId == mid)
{
return(CreateTime < DateTime.Now && DateTime.Now < ExpireTime);
}
else
{
return(false);
}
}
case LicenseType.Enterprise:
{
// check MachineId to server mac.
//if (string.IsNullOrEmpty(serverHost))
//serverHost = System.Net.Dns.GetHostName();
//var entry = System.Net.Dns.GetHostEntry(serverHost);
//]Iphlpapi.dll]
//DWORD SendARP(
// _In_ IPAddr DestIP,
// _In_ IPAddr SrcIP,
// _Out_ PULONG pMacAddr,
// _Inout_ PULONG PhyAddrLen
//);
throw new NotImplementedException();
}
default:
return(false);
}
}