// Note: configuration based on stackoverflow answer: http://stackoverflow.com/questions/229565/what-is-a-good-pattern-for-using-a-global-mutex-in-c
public BankAccountMutex(double money)
{
// get application GUID as defined in AssemblyInfo.cs
string appGuid = ((GuidAttribute)Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(GuidAttribute), false).GetValue(0)).Value.ToString();
// unique id for global mutex - Global prefix means it is global to the machine
string mutexId = string.Format("Global\\{{{0}}}", appGuid);
// Need a place to store a return value in Mutex() constructor call
bool createdNew;
// set up security for multi-user usage
// work also on localized systems (don't use just "Everyone")
var allowEveryoneRule = new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.FullControl, AccessControlType.Allow);
var securitySettings = new MutexSecurity();
securitySettings.AddAccessRule(allowEveryoneRule);
mutex = new Mutex(false, mutexId, out createdNew, securitySettings);
LogConsole("Setting initial amount of money: " + money);
if (money < 0)
{
LogConsole("The entered money quantity cannot be negative. Money: " + money);
throw new ArgumentException(GetMessageWithTreadId("The entered money quantity cannot be negative. Money: " + money));
}
this.bankMoney = money;
}
public unsafe Mutex(bool initiallyOwned, String name, out bool createdNew, MutexSecurity mutexSecurity)
{
if(null != name && System.IO.Path.MAX_PATH < name.Length)
{
throw new ArgumentException(Environment.GetResourceString("Argument_WaitHandleNameTooLong",name));
}
Contract.EndContractBlock();
Win32Native.SECURITY_ATTRIBUTES secAttrs = null;
#if !FEATURE_PAL && FEATURE_MACL
// For ACL's, get the security descriptor from the MutexSecurity.
if (mutexSecurity != null) {
secAttrs = new Win32Native.SECURITY_ATTRIBUTES();
secAttrs.nLength = (int)Marshal.SizeOf(secAttrs);
byte[] sd = mutexSecurity.GetSecurityDescriptorBinaryForm();
byte* pSecDescriptor = stackalloc byte[sd.Length];
Buffer.memcpy(sd, 0, pSecDescriptor, 0, sd.Length);
secAttrs.pSecurityDescriptor = pSecDescriptor;
}
#endif
RuntimeHelpers.CleanupCode cleanupCode = new RuntimeHelpers.CleanupCode(MutexCleanupCode);
MutexCleanupInfo cleanupInfo = new MutexCleanupInfo(null, false);
MutexTryCodeHelper tryCodeHelper = new MutexTryCodeHelper(initiallyOwned, cleanupInfo, name, secAttrs, this);
RuntimeHelpers.TryCode tryCode = new RuntimeHelpers.TryCode(tryCodeHelper.MutexTryCode);
RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(
tryCode,
cleanupCode,
cleanupInfo);
createdNew = tryCodeHelper.m_newMutex;
}
public unsafe Mutex(bool initiallyOwned, String name, out bool createdNew, MutexSecurity mutexSecurity)
{
if (name == string.Empty)
{
// Empty name is treated as an unnamed mutex. Set to null, and we will check for null from now on.
name = null;
}
#if !PLATFORM_UNIX
if (name != null && System.IO.Path.MaxPath < name.Length)
{
throw new ArgumentException(Environment.GetResourceString("Argument_WaitHandleNameTooLong", Path.MaxPath), "name");
}
#endif
Contract.EndContractBlock();
Win32Native.SECURITY_ATTRIBUTES secAttrs = null;
#if FEATURE_MACL
// For ACL's, get the security descriptor from the MutexSecurity.
if (mutexSecurity != null) {
secAttrs = new Win32Native.SECURITY_ATTRIBUTES();
secAttrs.nLength = (int)Marshal.SizeOf(secAttrs);
byte[] sd = mutexSecurity.GetSecurityDescriptorBinaryForm();
byte* pSecDescriptor = stackalloc byte[sd.Length];
Buffer.Memcpy(pSecDescriptor, 0, sd, 0, sd.Length);
secAttrs.pSecurityDescriptor = pSecDescriptor;
}
#endif
CreateMutexWithGuaranteedCleanup(initiallyOwned, name, out createdNew, secAttrs);
}
public unsafe Mutex(bool initiallyOwned, String name, out bool createdNew, MutexSecurity mutexSecurity)
{
if (name != null)
{
#if PLATFORM_UNIX
throw new PlatformNotSupportedException(Environment.GetResourceString("PlatformNotSupported_NamedSynchronizationPrimitives"));
#else
if (System.IO.Path.MaxPath < name.Length)
{
throw new ArgumentException(Environment.GetResourceString("Argument_WaitHandleNameTooLong", name));
}
#endif
}
Contract.EndContractBlock();
Win32Native.SECURITY_ATTRIBUTES secAttrs = null;
#if FEATURE_MACL
// For ACL's, get the security descriptor from the MutexSecurity.
if (mutexSecurity != null) {
secAttrs = new Win32Native.SECURITY_ATTRIBUTES();
secAttrs.nLength = (int)Marshal.SizeOf(secAttrs);
byte[] sd = mutexSecurity.GetSecurityDescriptorBinaryForm();
byte* pSecDescriptor = stackalloc byte[sd.Length];
Buffer.Memcpy(pSecDescriptor, 0, sd, 0, sd.Length);
secAttrs.pSecurityDescriptor = pSecDescriptor;
}
#endif
CreateMutexWithGuaranteedCleanup(initiallyOwned, name, out createdNew, secAttrs);
}
public static bool ObtainMutex(string settingsFolder)
{
SecurityIdentifier sid = new SecurityIdentifier(WellKnownSidType.WorldSid, null);
MutexSecurity security = new MutexSecurity();
bool useDefaultSecurity = false;
bool createdNew;
try {
security.AddAccessRule(new MutexAccessRule(sid, MutexRights.FullControl, AccessControlType.Allow));
security.AddAccessRule(new MutexAccessRule(sid, MutexRights.ChangePermissions, AccessControlType.Deny));
security.AddAccessRule(new MutexAccessRule(sid, MutexRights.Delete, AccessControlType.Deny));
}
catch (Exception ex) {
if (ex is ArgumentOutOfRangeException || ex is NotImplementedException) {
// Workaround for Mono
useDefaultSecurity = true;
}
else {
throw;
}
}
string name = @"Global\ChanThreadWatch_" + General.Calculate64BitMD5(Encoding.UTF8.GetBytes(
settingsFolder.ToUpperInvariant())).ToString("X16");
Mutex mutex = !useDefaultSecurity ?
new Mutex(false, name, out createdNew, security) :
new Mutex(false, name);
try {
if (!mutex.WaitOne(0, false)) {
return false;
}
}
catch (AbandonedMutexException) { }
ReleaseMutex();
_mutex = mutex;
return true;
}
public static Mutex GrabMutex(string name)
{
var mutexName = "kalixLuceneSegmentMutex_" + name;
try
{
return Mutex.OpenExisting(mutexName);
}
catch (WaitHandleCannotBeOpenedException)
{
var worldSid = new SecurityIdentifier(WellKnownSidType.WorldSid, null);
var security = new MutexSecurity();
var rule = new MutexAccessRule(worldSid, MutexRights.FullControl, AccessControlType.Allow);
security.AddAccessRule(rule);
var mutexIsNew = false;
return new Mutex(false, mutexName, out mutexIsNew, security);
}
catch (UnauthorizedAccessException)
{
var m = Mutex.OpenExisting(mutexName, MutexRights.ReadPermissions | MutexRights.ChangePermissions);
var security = m.GetAccessControl();
var user = Environment.UserDomainName + "\\" + Environment.UserName;
var rule = new MutexAccessRule(user, MutexRights.Synchronize | MutexRights.Modify, AccessControlType.Allow);
security.AddAccessRule(rule);
m.SetAccessControl(security);
return Mutex.OpenExisting(mutexName);
}
}
public static void SetAccessControl (this Mutex mutex, MutexSecurity mutexSecurity)
{
if (mutex == null)
throw new ArgumentNullException (nameof (mutex));
mutex.SetAccessControl (mutexSecurity);
}
protected override void OnStartup(StartupEventArgs e)
{
// store mutex result
bool createdNew;
// allow multiple users to run it, but only one per user
var allowEveryoneRule = new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.FullControl, AccessControlType.Allow);
var securitySettings = new MutexSecurity();
securitySettings.AddAccessRule(allowEveryoneRule);
// create mutex
_instanceMutex = new Mutex(true, @"Global\MercurialForge_Mastery", out createdNew, securitySettings);
// check if conflict
if (!createdNew)
{
MessageBox.Show("Instance of Mastery is already running");
_instanceMutex = null;
Application.Current.Shutdown();
return;
}
base.OnStartup(e);
MainWindow window = new MainWindow();
MainWindowViewModel viewModel = new MainWindowViewModel(window);
window.DataContext = viewModel;
window.Show();
}
/// <summary>
/// Tries to aquire a mutex with the name <see cref="MutexName"/>. Call this at the end of your constructors.
/// </summary>
/// <exception cref="UnauthorizedAccessException">Another process is already holding the mutex.</exception>
protected void AquireMutex()
{
if (MachineWide)
{
var mutexSecurity = new MutexSecurity();
mutexSecurity.AddAccessRule(new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.FullControl, AccessControlType.Allow));
bool createdNew;
_mutex = new Mutex(false, @"Global\" + MutexName, out createdNew, mutexSecurity);
}
_mutex = new Mutex(false, MutexName);
try
{
switch (WaitHandle.WaitAny(new[] {_mutex, Handler.CancellationToken.WaitHandle},
millisecondsTimeout: (Handler.Verbosity == Verbosity.Batch) ? 30000 : 1000, exitContext: false))
{
case 0:
return;
case 1:
throw new OperationCanceledException();
default:
case WaitHandle.WaitTimeout:
throw new UnauthorizedAccessException("Another process is already holding the mutex " + MutexName + ".");
}
}
catch (AbandonedMutexException ex)
{
// Abandoned mutexes also get owned, but indicate something may have gone wrong elsewhere
Log.Warn(ex.Message);
}
}
public UIMutex(string mutexName)
{
pGlobalMutexName = mutexName;
// Create a string representing the current user.
string userName = Environment.UserDomainName + "\\" + Environment.UserName;
// Create a security object that grants no access.
MutexSecurity mutexSecurity = new MutexSecurity();
// Add a rule that grants the current user the right
// to enter or release the mutex.
MutexAccessRule mutexAccessRule = new MutexAccessRule(userName, MutexRights.FullControl, AccessControlType.Allow);
mutexSecurity.AddAccessRule(mutexAccessRule);
bool createdNew = false;
pMutex = new Mutex(false, pGlobalMutexName, out createdNew, mutexSecurity);
if (createdNew)
{
// loggingSystem.LogVerbose("New Mutex created {0}", pGlobalMutexName);
}
else
{
//loggingSystem.LogVerbose("Existing Mutex opened {0}", globalMutextName);
}
}
public InterProcessMutexLock(String mutexName)
{
try
{
_mutexName = mutexName;
try
{
_currentMutex = Mutex.OpenExisting(_mutexName);
}
catch (WaitHandleCannotBeOpenedException)
{
// grant everyone access to the mutex
var security = new MutexSecurity();
var everyoneIdentity = new SecurityIdentifier(WellKnownSidType.WorldSid, null);
var rule = new MutexAccessRule(everyoneIdentity, MutexRights.FullControl, AccessControlType.Allow);
security.AddAccessRule(rule);
// make sure to not initially own it, because if you do it also acquires the lock
// we want to explicitly attempt to acquire the lock ourselves so we know how many times
// this object acquired and released the lock
_currentMutex = new Mutex(false, mutexName, out _created, security);
}
AquireMutex();
}
catch(Exception ex)
{
var exceptionString = String.Format("Exception in InterProcessMutexLock, mutex name {0}", mutexName);
Log.Error(this, exceptionString, ex);
throw ExceptionUtil.Rethrow(ex, exceptionString);
}
}
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(true);
string title = "KeyMagic";
bool beta = Properties.Settings.Default.BetaRelease;
if (beta) title += " (beta)";
string mutexName = "\u1000\u1001";
// http://stackoverflow.com/questions/229565/what-is-a-good-pattern-for-using-a-global-mutex-in-c/229567
using (var mutex = new Mutex(false, mutexName))
{
// edited by Jeremy Wiebe to add example of setting up security for multi-user usage
// edited by 'Marc' to work also on localized systems (don't use just "Everyone")
var allowEveryoneRule = new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.FullControl, AccessControlType.Allow);
var securitySettings = new MutexSecurity();
securitySettings.AddAccessRule(allowEveryoneRule);
mutex.SetAccessControl(securitySettings);
//edited by acidzombie24
var hasHandle = false;
try
{
try
{
// note, you may want to time out here instead of waiting forever
//edited by acidzombie24
//mutex.WaitOne(Timeout.Infinite, false);
hasHandle = mutex.WaitOne(100, false);
if (hasHandle == false) //another instance exist
{
IntPtr pWnd = NativeMethods.FindWindow(null, title);
if (pWnd != IntPtr.Zero)
{
NativeMethods.ShowWindow(pWnd, 0x05);
}
return;
}
}
catch (AbandonedMutexException)
{
// Log the fact the mutex was abandoned in another process, it will still get aquired
}
frmMain f = new frmMain();
Application.Run();
}
finally
{
//edit by acidzombie24, added if statemnet
if (hasHandle)
mutex.ReleaseMutex();
}
}
}
public unsafe Mutex(bool initiallyOwned, string name, out bool createdNew, MutexSecurity mutexSecurity)
{
if ((name != null) && (260 < name.Length))
{
throw new ArgumentException(Environment.GetResourceString("Argument_WaitHandleNameTooLong", new object[] { name }));
}
Win32Native.SECURITY_ATTRIBUTES secAttrs = null;
if (mutexSecurity != null)
{
secAttrs = new Win32Native.SECURITY_ATTRIBUTES {
nLength = Marshal.SizeOf(secAttrs)
};
byte[] securityDescriptorBinaryForm = mutexSecurity.GetSecurityDescriptorBinaryForm();
byte* pDest = stackalloc byte[1 * securityDescriptorBinaryForm.Length];
Buffer.memcpy(securityDescriptorBinaryForm, 0, pDest, 0, securityDescriptorBinaryForm.Length);
secAttrs.pSecurityDescriptor = pDest;
}
SafeWaitHandle mutexHandle = null;
bool newMutex = false;
RuntimeHelpers.CleanupCode backoutCode = new RuntimeHelpers.CleanupCode(this.MutexCleanupCode);
MutexCleanupInfo cleanupInfo = new MutexCleanupInfo(mutexHandle, false);
RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(delegate (object userData) {
RuntimeHelpers.PrepareConstrainedRegions();
try
{
}
finally
{
if (initiallyOwned)
{
cleanupInfo.inCriticalRegion = true;
Thread.BeginThreadAffinity();
Thread.BeginCriticalRegion();
}
}
int errorCode = 0;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
}
finally
{
errorCode = CreateMutexHandle(initiallyOwned, name, secAttrs, out mutexHandle);
}
if (mutexHandle.IsInvalid)
{
mutexHandle.SetHandleAsInvalid();
if (((name != null) && (name.Length != 0)) && (6 == errorCode))
{
throw new WaitHandleCannotBeOpenedException(Environment.GetResourceString("Threading.WaitHandleCannotBeOpenedException_InvalidHandle", new object[] { name }));
}
__Error.WinIOError(errorCode, name);
}
newMutex = errorCode != 0xb7;
this.SetHandleInternal(mutexHandle);
this.hasThreadAffinity = true;
}, backoutCode, cleanupInfo);
createdNew = newMutex;
}
[System.Security.SecuritySafeCritical] // auto-generated
public static void SetAccessControl(this Mutex mutex, MutexSecurity mutexSecurity)
{
if (mutexSecurity == null)
throw new ArgumentNullException("mutexSecurity");
Contract.EndContractBlock();
mutexSecurity.Persist(mutex.GetSafeWaitHandle());
}
public static Mutex CreateMutexWithFullControlRights(String name, out Boolean createdNew)
{
SecurityIdentifier securityIdentifier = new SecurityIdentifier(WellKnownSidType.WorldSid, null);
MutexSecurity mutexSecurity = new MutexSecurity();
MutexAccessRule rule = new MutexAccessRule(securityIdentifier, MutexRights.FullControl, AccessControlType.Allow);
mutexSecurity.AddAccessRule(rule);
return new Mutex(false, name, out createdNew, mutexSecurity);
}
public InterProcessLock(string name, TimeSpan timeout)
{
bool created;
var security = new MutexSecurity();
security.AddAccessRule(new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.Synchronize | MutexRights.Modify, AccessControlType.Allow));
this.Mutex = new Mutex(false, name, out created, security);
this.IsAcquired = this.Mutex.WaitOne(timeout);
}
/// <summary>
/// Create the mutex instance used to singal that one or more listeners are active.
/// </summary>
/// <param name="mutexName">The shared mutex name.</param>
protected static Mutex CreateMutex(String mutexName)
{
var securitySettings = new MutexSecurity();
var createdNew = false;
securitySettings.AddAccessRule(new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.FullControl, AccessControlType.Allow));
return new Mutex(false, mutexName, out createdNew, securitySettings);
}
internal static void EnterMutexWithoutGlobal(string mutexName, ref Mutex mutex)
{
bool flag;
MutexSecurity mutexSecurity = new MutexSecurity();
SecurityIdentifier identity = new SecurityIdentifier(WellKnownSidType.AuthenticatedUserSid, null);
mutexSecurity.AddAccessRule(new MutexAccessRule(identity, MutexRights.Synchronize | MutexRights.Modify, AccessControlType.Allow));
Mutex mutexIn = new Mutex(false, mutexName, out flag, mutexSecurity);
SafeWaitForMutex(mutexIn, ref mutex);
}
public static MutexSecurity MutexSecurity()
{
SecurityIdentifier user = GetEveryoneSID();
MutexSecurity result = new MutexSecurity();
MutexAccessRule rule = new MutexAccessRule(user, MutexRights.Synchronize | MutexRights.Modify | MutexRights.Delete, AccessControlType.Allow);
result.AddAccessRule(rule);
return result;
}
private static MutexSecurity CreateFullAccessMutexSecurity ()
{
// full permissions for all authorized users
var mutexSecurity = new MutexSecurity();
mutexSecurity.AddAccessRule(new MutexAccessRule(
WellKnownSidType.CreatorOwnerSid.ToIdentifier(), MutexRights.FullControl, AccessControlType.Allow));
mutexSecurity.AddAccessRule(new MutexAccessRule(
WellKnownSidType.AuthenticatedUserSid.ToIdentifier(), MutexRights.FullControl, AccessControlType.Allow));
return mutexSecurity;
}
// Methods
public MutexHelper(string mutexName)
{
bool flag;
this.pGlobalMutexName = mutexName;
string identity = Environment.UserDomainName + @"\" + Environment.UserName;
MutexSecurity mutexSecurity = new MutexSecurity();
MutexAccessRule rule = new MutexAccessRule(identity, MutexRights.FullControl, AccessControlType.Allow);
mutexSecurity.AddAccessRule(rule);
this.pMutex = new Mutex(false, this.pGlobalMutexName, out flag, mutexSecurity);
}
private void InitMutex(Guid appGuid)
{
var mutexId = string.Format("Global\\{{{0}}}", appGuid);
_mutex = new Mutex(false, mutexId);
var allowEveryoneRule = new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.FullControl, AccessControlType.Allow);
var securitySettings = new MutexSecurity();
securitySettings.AddAccessRule(allowEveryoneRule);
_mutex.SetAccessControl(securitySettings);
}
internal static unsafe void AcquireReservedMutex(ref bool bHandleObtained)
{
SafeWaitHandle handle = null;
bHandleObtained = false;
if (Environment.IsW2k3)
{
if (s_ReservedMutex == null)
{
Win32Native.SECURITY_ATTRIBUTES security_attributes;
MutexSecurity security = new MutexSecurity();
SecurityIdentifier identity = new SecurityIdentifier(WellKnownSidType.WorldSid, null);
security.AddAccessRule(new MutexAccessRule(identity, MutexRights.FullControl, AccessControlType.Allow));
security_attributes = new Win32Native.SECURITY_ATTRIBUTES {
nLength = Marshal.SizeOf(security_attributes)
};
byte[] securityDescriptorBinaryForm = security.GetSecurityDescriptorBinaryForm();
byte* pDest = stackalloc byte[(IntPtr) securityDescriptorBinaryForm.Length];
Buffer.memcpy(securityDescriptorBinaryForm, 0, pDest, 0, securityDescriptorBinaryForm.Length);
security_attributes.pSecurityDescriptor = pDest;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
}
finally
{
handle = Win32Native.CreateMutex(security_attributes, false, @"Global\CLR_RESERVED_MUTEX_NAME");
handle.SetAsReservedMutex();
}
int errorCode = Marshal.GetLastWin32Error();
if (handle.IsInvalid)
{
handle.SetHandleAsInvalid();
__Error.WinIOError(errorCode, @"Global\CLR_RESERVED_MUTEX_NAME");
}
Mutex mutex = new Mutex(handle);
Interlocked.CompareExchange<Mutex>(ref s_ReservedMutex, mutex, null);
}
RuntimeHelpers.PrepareConstrainedRegions();
try
{
}
finally
{
try
{
s_ReservedMutex.WaitOne();
bHandleObtained = true;
}
catch (AbandonedMutexException)
{
bHandleObtained = true;
}
}
}
}
private static Mutex CreateSharableMutex(string name)
{
// Creates a mutex sharable by more than one process
var mutexSecurity = new MutexSecurity();
mutexSecurity.AddAccessRule(new MutexAccessRule("Everyone", MutexRights.FullControl, AccessControlType.Allow));
// The constructor will either create new mutex or open
// an existing one, in a thread-safe manner
bool createdNew;
return new Mutex(false, name, out createdNew, mutexSecurity);
}
private void InitMutex()
{
var appGuid = ((GuidAttribute)Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(GuidAttribute), false).GetValue(0)).Value;
var mutexId = string.Format("Global\\{{{0}}}", appGuid);
_mutex = new Mutex(false, mutexId);
var allowEveryoneRule = new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.FullControl, AccessControlType.Allow);
var securitySettings = new MutexSecurity();
securitySettings.AddAccessRule(allowEveryoneRule);
_mutex.SetAccessControl(securitySettings);
}
private static Mutex BuildMutex(string name)
{
name = name.Replace(":", "_");
name = name.Replace("/", "_");
name = name.Replace("\\", "_");
string mutexId = string.Format("Global\\{0}", name);
var allowEveryoneRule = new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.FullControl, AccessControlType.Allow);
var securitySettings = new MutexSecurity();
securitySettings.AddAccessRule(allowEveryoneRule);
bool createdNew;
var mutex = new Mutex(false, mutexId, out createdNew, securitySettings);
return mutex;
}
/// <summary>
/// Creates a global mutex and allows everyone access to it.
/// </summary>
/// <param name="name">The name of the mutex to create in the Global namespace.</param>
public GlobalMutex(string name)
{
// Allow full control of the mutex for everyone so that other users will be able to
// create the same mutex and synchronise on it, if required.
var allowEveryoneRule = new MutexAccessRule(
new SecurityIdentifier(WellKnownSidType.WorldSid, null),
MutexRights.FullControl,
AccessControlType.Allow);
var securitySettings = new MutexSecurity();
securitySettings.AddAccessRule(allowEveryoneRule);
bool createdNew;
// Use the Global prefix to make it a system-wide object
mutex = new Mutex(false, @"Global\" + name, out createdNew, securitySettings);
}
private void InitWaitHandle() {
string mutexId = String.Format("Global\\{{{0}}}", _key);
try {
var allowEveryoneRule = new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.FullControl, AccessControlType.Allow);
var securitySettings = new MutexSecurity();
securitySettings.AddAccessRule(allowEveryoneRule);
bool wasCreated = false;
_waitHandle = new Mutex(false, mutexId, out wasCreated, securitySettings);
} catch (Exception) {
// We fallback to AutoResetEvent because Mutex isn't supported in medium trust.
_waitHandle = _namedLocks.GetOrAdd(_key, key => new AutoResetEvent(true));
}
}
static void Main()
{
bool createdNew;
var mutexSecurity = new MutexSecurity();
mutexSecurity.AddAccessRule(new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.FullControl, AccessControlType.Allow));
using (var setupMutex = new Mutex(false, @"Global\JosipMedved_HamCheck", out createdNew, mutexSecurity)) {
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Thread.CurrentThread.CurrentUICulture = new System.Globalization.CultureInfo(Medo.Configuration.Settings.Read("CultureName", "en-US"));
Medo.Application.UnhandledCatch.ThreadException += new EventHandler<ThreadExceptionEventArgs>(UnhandledCatch_ThreadException);
Medo.Application.UnhandledCatch.Attach();
Medo.Configuration.Settings.NoRegistryWrites = Settings.NoRegistryWrites;
Medo.Windows.Forms.State.NoRegistryWrites = Settings.NoRegistryWrites;
Medo.Diagnostics.ErrorReport.DisableAutomaticSaveToTemp = Settings.NoRegistryWrites;
if (!((Environment.OSVersion.Version.Build < 7000) || (App.IsRunningOnMono))) {
var appId = Assembly.GetExecutingAssembly().Location;
if (appId.Length > 127) { appId = @"JosipMedved_HamCheck\" + appId.Substring(appId.Length - 127 - 20); }
NativeMethods.SetCurrentProcessExplicitAppUserModelID(appId);
}
var mainForm = new MainForm();
//single instance
Medo.Application.SingleInstance.NewInstanceDetected += delegate (object sender, Medo.Application.NewInstanceEventArgs e) {
mainForm.Show();
mainForm.Activate();
};
if (Medo.Application.SingleInstance.IsOtherInstanceRunning) {
var currProcess = Process.GetCurrentProcess();
foreach (var iProcess in Process.GetProcessesByName(currProcess.ProcessName)) {
try {
if (iProcess.Id != currProcess.Id) {
NativeMethods.AllowSetForegroundWindow(iProcess.Id);
break;
}
} catch (Win32Exception) { }
}
}
Medo.Application.SingleInstance.Attach();
Application.Run(mainForm);
}
}
public static void RunSingleProcessOnly(bool silent = false)
{
string app_name = ProgramRoutines.GetAppName();
bool createdNew;
MutexSecurity mutexSecurity = new System.Security.AccessControl.MutexSecurity();
mutexSecurity.AddAccessRule(new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.Synchronize | MutexRights.Modify, AccessControlType.Allow));
for (int i = 0; i < 2; i++)
{
try
{
GLOBAL_SINGLE_PROCESS_MUTEX = new Mutex(false, @"Global\CLIVERSOFT_" + app_name + @"_SINGLE_PROCESS", out createdNew, mutexSecurity);
break;
}
catch (Exception e)
{//An “access denied” while creating a new Mutex can happen in the following situation:
//a.Process A running as an administrator creates a named mutex.
//b.Process B running as a normal user attempts to access the mutex which fails with “access denied” since only Administrators can access the mutex.
if (i == 0)
{
Thread.Sleep(1000);//wait for some time while contending, if the other instance of the program is still in progress of shutting down.
continue;
}
if (!silent)
{
LogMessage.Exit(e);
}
else
{
Environment.Exit(0);
}
}
}
if (GLOBAL_SINGLE_PROCESS_MUTEX.WaitOne(1000, false))//wait for some time while contending, if the other instance of the program is still in progress of shutting down.
{
return;
}
if (!silent)
{
LogMessage.Exit2(app_name + " is already running, so this instance will exit.");
}
else
{
Environment.Exit(0);
}
}
public static bool TryGetMutex()
{
//source: http://stackoverflow.com/questions/229565/what-is-a-good-pattern-for-using-a-global-mutex-in-c
// get application GUID as defined in AssemblyInfo.cs
//string appGuid = "SjUpdater\\v" +Assembly.GetExecutingAssembly().GetName().Version.Major;
string appGuid = ((GuidAttribute)Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(GuidAttribute), false).GetValue(0)).Value.ToString();
// unique id for global mutex - Global prefix means it is global to the machine
string mutexId = string.Format("Global\\{{{0}}}", appGuid);
mutex = new Mutex(false, mutexId);
// edited by Jeremy Wiebe to add example of setting up security for multi-user usage
// edited by 'Marc' to work also on localized systems (don't use just "Everyone")
var allowEveryoneRule = new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null),
MutexRights.FullControl, AccessControlType.Allow);
var securitySettings = new MutexSecurity();
securitySettings.AddAccessRule(allowEveryoneRule);
mutex.SetAccessControl(securitySettings);
// edited by acidzombie24
try
{
try
{
// note, you may want to time out here instead of waiting forever
// edited by acidzombie24
// mutex.WaitOne(Timeout.Infinite, false);
hasHandle = mutex.WaitOne(5000, false);
if (hasHandle == false)
throw new TimeoutException("Timeout waiting for exclusive access");
}
catch (AbandonedMutexException)
{
// Log the fact the mutex was abandoned in another process, it will still get aquired
hasHandle = true;
}
return true;
}
catch
{
return false;
}
}
