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Sonarr/NzbDrone.Common/SecurityProvider.cs
2013-05-07 00:46:16 -07:00

254 lines
6.4 KiB
C#

using System;
using System.Diagnostics;
using System.Linq;
using System.Security.Principal;
using NLog;
#if __MonoCS__
#else
using NetFwTypeLib;
#endif
namespace NzbDrone.Common
{
public interface ISecurityProvider
{
void MakeAccessible();
bool IsCurrentUserAdmin();
bool IsNzbDronePortOpen();
bool IsNzbDroneUrlRegistered();
}
public class SecurityProvider : ISecurityProvider
{
private readonly ConfigFileProvider _configFileProvider;
private readonly EnvironmentProvider _environmentProvider;
private readonly ProcessProvider _processProvider;
private readonly Logger _logger;
public SecurityProvider(ConfigFileProvider configFileProvider, EnvironmentProvider environmentProvider,
ProcessProvider processProvider, Logger logger)
{
_configFileProvider = configFileProvider;
_environmentProvider = environmentProvider;
_processProvider = processProvider;
_logger = logger;
}
public void MakeAccessible()
{
if (!IsCurrentUserAdmin ())
{
_logger.Trace ("User is not an admin, skipping.");
return;
}
int port = 0;
if (IsFirewallEnabled ())
{
if (IsNzbDronePortOpen ())
{
_logger.Trace ("NzbDrone port is already open, skipping.");
return;
}
//Close any old ports
port = CloseFirewallPort ();
//Open the new port
OpenFirewallPort (_configFileProvider.Port);
}
//Skip Url Register if not Vista or 7
if (_environmentProvider.GetOsVersion ().Major < 6)
return;
//Unregister Url (if port != 0)
if (port != 0)
UnregisterUrl(port);
//Register Url
RegisterUrl(_configFileProvider.Port);
}
public bool IsCurrentUserAdmin()
{
try {
var principal = new WindowsPrincipal (WindowsIdentity.GetCurrent ());
return principal.IsInRole (WindowsBuiltInRole.Administrator);
} catch (Exception ex) {
_logger.WarnException ("Error checking if the current user is an administrator.", ex);
return false;
}
}
public bool IsNzbDronePortOpen()
{
#if __MonoCS__
#else
try {
var netFwMgrType = Type.GetTypeFromProgID ("HNetCfg.FwMgr", false);
var mgr = (INetFwMgr)Activator.CreateInstance (netFwMgrType);
if (!mgr.LocalPolicy.CurrentProfile.FirewallEnabled)
return false;
var ports = mgr.LocalPolicy.CurrentProfile.GloballyOpenPorts;
foreach (INetFwOpenPort p in ports) {
if (p.Port == _configFileProvider.Port)
return true;
}
}
catch (Exception ex) {
_logger.WarnException ("Failed to check for open port in firewall", ex);
}
#endif
return false;
}
public bool IsNzbDroneUrlRegistered()
{
return CheckIfUrlIsRegisteredUrl(_configFileProvider.Port);
}
private void OpenFirewallPort(int portNumber)
{
#if __MonoCS__
return true;
#else
try {
var type = Type.GetTypeFromProgID ("HNetCfg.FWOpenPort", false);
var port = Activator.CreateInstance (type) as INetFwOpenPort;
port.Port = portNumber;
port.Name = "NzbDrone";
port.Protocol = NET_FW_IP_PROTOCOL_.NET_FW_IP_PROTOCOL_TCP;
port.Enabled = true;
var netFwMgrType = Type.GetTypeFromProgID ("HNetCfg.FwMgr", false);
var mgr = (INetFwMgr)Activator.CreateInstance (netFwMgrType);
var ports = mgr.LocalPolicy.CurrentProfile.GloballyOpenPorts;
ports.Add (port);
}
catch (Exception ex) {
_logger.WarnException ("Failed to open port in firewall for NzbDrone " + portNumber, ex);
}
#endif
}
private int CloseFirewallPort()
{
#if __MonoCS__
#else
try {
var netFwMgrType = Type.GetTypeFromProgID ("HNetCfg.FwMgr", false);
var mgr = (INetFwMgr)Activator.CreateInstance (netFwMgrType);
var ports = mgr.LocalPolicy.CurrentProfile.GloballyOpenPorts;
var portNumber = 8989;
foreach (INetFwOpenPort p in ports) {
if (p.Name == "NzbDrone") {
portNumber = p.Port;
break;
}
}
if (portNumber != _configFileProvider.Port)
{
ports.Remove (portNumber, NET_FW_IP_PROTOCOL_.NET_FW_IP_PROTOCOL_TCP);
return portNumber;
}
}
catch (Exception ex)
{
_logger.WarnException ("Failed to close port in firewall for NzbDrone", ex);
}
#endif
return 0;
}
private bool IsFirewallEnabled()
{
#if __MonoCS__
return true;
#else
try {
var netFwMgrType = Type.GetTypeFromProgID ("HNetCfg.FwMgr", false);
var mgr = (INetFwMgr)Activator.CreateInstance (netFwMgrType);
return mgr.LocalPolicy.CurrentProfile.FirewallEnabled;
}
catch (Exception ex)
{
_logger.WarnException ("Failed to check if the firewall is enabled", ex);
return false;
}
#endif
}
private void RegisterUrl(int portNumber)
{
var arguments = String.Format("http add urlacl http://*:{0}/ user=EVERYONE", portNumber);
RunNetsh(arguments);
}
private void UnregisterUrl(int portNumber)
{
var arguments = String.Format("http delete urlacl http://*:{0}/", portNumber);
RunNetsh(arguments);
}
private bool CheckIfUrlIsRegisteredUrl(int portNumber)
{
var url = String.Format("http://*:{0}/", portNumber);
var arguments = String.Format("http show urlacl url=\"{0}\"", url);
var output = RunNetsh(arguments);
if(String.IsNullOrWhiteSpace(output))
{
_logger.Error("netsh output is invalid for arguments: {0}", arguments);
}
if(!output.Contains(url))
{
_logger.Trace("Url has not already been registered");
return false;
}
_logger.Trace("Url has already been registered!");
return true;
}
private string RunNetsh(string arguments)
{
try
{
var startInfo = new ProcessStartInfo()
{
RedirectStandardOutput = true,
UseShellExecute = false,
FileName = "netsh.exe",
Arguments = arguments
};
var process = _processProvider.Start(startInfo);
process.WaitForExit(5000);
return process.StandardOutput.ReadToEnd();
}
catch (Exception ex)
{
_logger.WarnException("Error executing netsh with arguments: " + arguments, ex);
}
return null;
}
}
}