public void NotifyLicenseCheckFailed(LicenseCheckFailureReason reason, Type licensedComponentType, object instance, string licenseKey)
{
//Trace.WriteLine( "NotifyLicenseCheckFailed" );
if (LicenseCheckFailed != null)
{
LicenseCheckFailedEventArgs e = new LicenseCheckFailedEventArgs(reason, licensedComponentType, instance);
LicenseCheckFailed(this, e);
}
else
{
StringBuilder sb = new StringBuilder();
string caption = "License Check Failed";
sb.AppendFormat("The product {0} requires a valid license, but one could not be obtained.\n", this.ProductName);
sb.AppendFormat("[licensed class: {0}. Failure reason: {1}]\n", licensedComponentType, reason);
sb.AppendFormat("\n");
sb.AppendFormat("Use the contact information below to obtain a valid license from the vendor.\n");
sb.AppendFormat(" Vendor : {0}\n", this.VendorName);
sb.AppendFormat(" Product: {0}\n", this.ProductName);
sb.AppendFormat(" Contact: {0}\n", this.ContactUrl);
if (licenseKey != null && licenseKey.Length != 0)
{
sb.AppendFormat(" License Key: {0}\n", licenseKey);
}
sb.AppendFormat("\n");
sb.AppendFormat("[ Integrated licensing support by License Express (tm) from Wanderlust Software. http://www.wanderlust-software.com ]");
System.Windows.Forms.MessageBox.Show(sb.ToString(), caption);
}
//Trace.WriteLine( "End NotifyLicenseCheckFailed" );
}
public LicenseCheckFailedEventArgs(LicenseCheckFailureReason reason, Type licensedComponentType, object instance)
{
this.Reason = reason;
this.LicensedComponentType = licensedComponentType;
this.Component = instance;
}
public void NotifyLicenseCheckFailed(LicenseCheckFailureReason reason, Type licensedComponentType, object instance, string licenseKey)
{
//Trace.WriteLine( "NotifyLicenseCheckFailed" );
if ( LicenseCheckFailed != null )
{
LicenseCheckFailedEventArgs e = new LicenseCheckFailedEventArgs(reason, licensedComponentType, instance);
LicenseCheckFailed(this, e);
}
else
{
StringBuilder sb = new StringBuilder();
string caption = "License Check Failed";
sb.AppendFormat( "The product {0} requires a valid license, but one could not be obtained.\n", this.ProductName);
sb.AppendFormat( "[licensed class: {0}. Failure reason: {1}]\n", licensedComponentType, reason );
sb.AppendFormat( "\n" );
sb.AppendFormat( "Use the contact information below to obtain a valid license from the vendor.\n" );
sb.AppendFormat( " Vendor : {0}\n", this.VendorName );
sb.AppendFormat( " Product: {0}\n", this.ProductName );
sb.AppendFormat( " Contact: {0}\n", this.ContactUrl );
if ( licenseKey != null && licenseKey.Length != 0 )
{
sb.AppendFormat( " License Key: {0}\n", licenseKey );
}
sb.AppendFormat( "\n" );
sb.AppendFormat( "[ Integrated licensing support by License Express (tm) from Wanderlust Software. http://www.wanderlust-software.com ]");
System.Windows.Forms.MessageBox.Show( sb.ToString(), caption );
}
//Trace.WriteLine( "End NotifyLicenseCheckFailed" );
}
//
// This routine gets the runtime license key associated with an
// application. It returns true if licence runtime key was
// retrieved from registry, or created and stored in registry.
// This is necessary ...
//
private bool GetApplicationRuntimeLicenseKey(LicenseKey licenseKey, Type type)
{
Microsoft.Win32.RegistryKey regKey = null;
bool SuccessfulWriteToRegisty = false;
//
// Here we check the registry to find if a runtime license exists.
// If we do not find one, assume that this is the first time this
// application is running.
//
String regKeyName = registryCacheName + "\\" + type.GUID.ToString();
try
{
regKey = Microsoft.Win32.Registry.CurrentUser.OpenSubKey(regKeyName, true);
}
catch (ArgumentException e)
{
Debug.WriteLine("Exception trying to read registry.");
Debug.WriteLine(e);
return(false);
}
catch (System.Security.SecurityException e)
{
Debug.WriteLine("Exception reading registry.");
Debug.WriteLine(e);
return(false);
}
if (regKey == null)
{
//
// No key found in registry, so generate one and save it.
//
SuccessfulWriteToRegisty = GenerateRunTimeLicenseKeyFromDesignTime(licenseKey, type);
//
// If there was a problem writing to the registry,
// return false thereby failing the license
//
if (!SuccessfulWriteToRegisty)
{
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
return(false);
}
try
{
regKey = Microsoft.Win32.Registry.CurrentUser.OpenSubKey(regKeyName, true);
}
catch (ArgumentException e)
{
Debug.WriteLine("Exception trying to read registry.");
Debug.WriteLine(e);
return(false);
}
catch (System.Security.SecurityException e)
{
Debug.WriteLine("Exception reading registry.");
Debug.WriteLine(e);
return(false);
}
}
if (regKey != null)
{
this.licenseKeyString = (string)regKey.GetValue("License");
if (this.licenseKeyString == null)
{
//
// Someone probably deleted key manually. Fail the license.
//
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
regKey.Close();
return(false);
}
regKey.Close();
}
else
{
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
return(false);
}
//
// this.licenseKeyString updated
//
return(true);
}
//
// GetKey() is defined by LicFileLicenseProvider. It is called during
// GetLicense() processing in order to populate the LicenseKey property
// of the License object returned to the caller.
//
protected override string GetKey(Type type)
{
string key;
LicenseKey licenseKey;
if (traceSwitch.TraceVerbose)
{
Trace.WriteLine(String.Format("GetKey(type={0})", type));
}
Trace.Indent();
//
// We return whichever license key string we were presented in IsKeyValid(),
// unless we had been presented a 'design time evaluation' license.
// In the latter case, we generate a new license key that encodes the
// evaluation expiration date in it. This license key will subsequenty
// be embedded in the executable being built.
//
key = this.licenseKeyString;
//
// Myk, what do we do if we catch an exception here? we should
// never, because key should be valid. If we return null, will we
// still get a license? In that case, we should never throw any
// exceptions.
//
try
{
licenseKey = new LicenseKey(key);
}
catch (ArgumentException)
{
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
return(null);
}
if (traceSwitch.TraceVerbose)
{
Trace.WriteLine("GetKey: License type is " + licenseKey.Type);
}
if (licenseKey.Type == LicenseKeyType.DesignTimeEvaluation)
{
//
// Modify the license key to be a 'runtime evaluation' license by
// changing its type, setting the expiration date, and recalculating
// its hash value.
//
licenseKey.Type = LicenseKeyType.RuntimeEvaluation;
licenseKey.ExpirationDate = DateTime.Now.AddDays(licenseKey.EvaluationDays);
licenseKey.Hash = licenseKey.CalculateHash(licenseComponent.MasterLicensePassword);
key = licenseKey.ToString();
}
if (traceSwitch.TraceVerbose)
{
Trace.WriteLine("Generated license key: " + key);
}
Trace.Unindent();
//
// Return the new license key string to be embedded.
//
return(key);
}
//
// This routine gets the runtime license key assocaited with an
// application. This is necessary ...
//protected LicenseKey GetApplicationRuntimeLicenseKey()
//{
//}
//
// IsKeyValid is defined by LicFileLicenseProvider, and is called
// during processing of GetLicense to determine if a given license
// key string represents a valid license.
//
// Notice that we are only given the string and the type of the
// class being licensed. We need to use the LicXLicenseComponent
// that is a member of the licensed instance, so we pull that out
// of the class field where it had been stored earlier.
//
// Note that in the case of an application licensed with an evaluation
// license, we may have to go to the registry to find an appropriate
// license key string.
//
protected override bool IsKeyValid(string licenseKeyString, Type type)
{
bool keyIsValid;
bool RunTimKeyFound = false;
LicenseKey licenseKey;
if (traceSwitch.TraceVerbose)
{
Trace.WriteLine(String.Format("IsKeyValid({0}, {1})", licenseKeyString, type));
}
Trace.Indent();
//
// Save LicenseKeyString for later use in GetKey. If this is a
// runtime application using a design time key, it will be changed
// and stored for GetKey()
//
this.licenseKeyString = licenseKeyString;
//
// Create a LicenseKey object with the given license key string.
// The LicenseKey can throw an Exception for the int32.parse
// method. Fail it if does, b/c something is a matter with our
// license key string.
//
try
{
licenseKey = new LicenseKey(licenseKeyString);
}
catch (ArgumentException)
{
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
return(false);
}
//
// If we are being invoked at runtime, and the license key string
// we are given is of type "design time evaluation", we are dealing
// with a licensed application (as opposed to a component). In
// this case, the runtime license we use needs to be in the
// registry. (The first time the application is run, we need to
// create this registry license).
//
// BUGBUG: It doesn't appear that the check for
// BUGBUG: "!licenseKey.AbsoluteExpirationDate is ever needed?
// BUGBUG: Need to do a full test cycle to make sure...
//
if (
(LicenseManager.CurrentContext.UsageMode == LicenseUsageMode.Runtime) &&
(licenseKey.Type == LicenseKeyType.DesignTimeEvaluation) &&
(!licenseKey.AbsoluteExpirationDate)
)
{
RunTimKeyFound = GetApplicationRuntimeLicenseKey(licenseKey, type);
if (!RunTimKeyFound)
{
// there was a problem writing or reading from the registry, so
// fail the license.
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
return(false);
}
else
{
//
// this.licenseKeyString has changed to runtime application, so update
// licenseKey
//
try
{
licenseKey = new LicenseKey(this.licenseKeyString);
}
catch (ArgumentException)
{
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
return(false);
}
}
}
#if delete
/* //
* // Here we check the registry to find if a runtime license exists.
* // If we do not find one, assume that this is the first time this
* // application is running.
* //
*
* String regKeyName = registryCacheName + "\\" + type.GUID.ToString();
*
* try
* {
* regKey = Microsoft.Win32.Registry.CurrentUser.OpenSubKey( regKeyName, true );
* }
* catch( ArgumentException e )
* {
* Trace.WriteLine("Exception building license.");
* Trace.WriteLine(e);
* licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
* return false;
* }
* // BUGBUG: SecurityException ?
*
*
* if ( regKey == null )
* {
* generateruntimefromdesign();
* regKey =
* }
*
* //
* // Read the license key string from the registry, and use it
* // to create a new licenseKey object. regKey will
* // be null (undefined in VS) if the value doesn't exist.
* //
*
* if ( regKey != null )
* {
* // BUGBUG: SecurityException ?
* this.licenseKeyString = (string) regKey.GetValue( "License" );
* if ( this.licenseKeyString == NULL )
* {
* // fail.
* }
*
* try
* {
* licenseKey = new LicenseKey(this.licenseKeyString);
* }
* catch( ArgumentException e)
* {
* licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
* return false;
* }
*
* regKey.Close();
* }
* else
* {
* noRunTimeKeyFound = true;
* }
*
*
* //
* // If the license key string was not found in the registry,
* // it's assumed that this is the first run of an application.
* // Create a new runtime license key and save it
* // to the registry.
* //
*
* if( noRunTimeKeyFound )
* {
* //
* // Modify the license key to be a 'runtime evaluation' license by
* // changing its type, setting the expiration date, and recalculating
* // its hash value. The serial number stays the same.
* //
*
* licenseKey.Type = LicenseKeyType.RuntimeEvaluation;
* licenseKey.ExpirationDate = DateTime.Now.AddDays( licenseKey.EvaluationDays );
* licenseKey.Hash = licenseKey.CalculateHash( licenseComponent.MasterLicensePassword );
*
*
* //
* // Save the new runtime license key string, as it is needed
* // later by GetKey().
* //
*
* this.licenseKeyString = licenseKey.ToString();
*
*
* //
* // Write out to the Registry. CreateSubKey returns null if it fails.
* // If an exceptions occurs, fail the license.
* //
* // Note that CreateSubKey may return a SecurityException, but the
* // compiler throws an error.
* //
* // BUGBUG: proibably just need to refer to it as System.Security.SecurityException
* //
* try
* {
* regKey = Microsoft.Win32.Registry.CurrentUser.CreateSubKey( registryCacheName + "\\" + type.GUID.ToString() );
* if ( regKey == null )
* {
* // BUGBUG: handle error.
* }
* regKey.SetValue( "License", (string) this.licenseKeyString );
* }
* catch( UnauthorizedAccessException e )
* {
* Trace.WriteLine("Exception writing to registry.");
* Trace.WriteLine(e);
* licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
* return false;
* }
* //catch( SecurityException e)
* //{
* // Trace.WriteLine("Exception writing to registry.");
* // Trace.WriteLine(e);
* // licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
* // return false;
* //}
*
* if( regKey != null )
* {
* regKey.Close();
* }
* }
* } // end of if licenseType is runtime using design time eval license
*/
#endif //delete
//
// Now we have ensured that we have the right key ( The .lic file
// was possibly replaced with a runtime key saved in the registry).
// First validate that the key is authentic.
//
keyIsValid = licenseKey.IsHashValid(licenseComponent.MasterLicensePassword);
if (!keyIsValid)
{
if (traceSwitch.TraceVerbose)
{
Trace.WriteLine("IsKeyValid: License key is not properly signed. Key=" + licenseKeyString);
}
Trace.Unindent();
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
return(false);
}
//
// If the licenseKey is a runtime evaluation, check if:
// - expiration date is expired
// - expiration period is longer than maximum allowed
// - it has an absolute evaluation date, check if its
// not expired
// - a 'time-bomb' has been set for the component itself,
// and if so, should it go boom.
//
// If any of these returns a expired or invalid value, declare
// that the key is not valid by returning false after setting
// the licenseCheckFailureReason. Otherwise return true.
//
if (licenseKey.Type == LicenseKeyType.RuntimeEvaluation)
{
if (traceSwitch.TraceVerbose)
{
Trace.WriteLine(" License key is runtime evaluation.");
Trace.WriteLine(" Current Date: " + DateTime.Now);
Trace.WriteLine(" Expiration Date: " + licenseKey.ExpirationDate);
}
//
// Check whether the current date is beyond the expiration date.
//
if (DateTime.Now > licenseKey.ExpirationDate)
{
if (traceSwitch.TraceVerbose)
{
Trace.WriteLine("IsKeyValid: License is expired. ExpirationDate = " + licenseKey.ExpirationDate);
}
Trace.Unindent();
licenseCheckFailureReason = LicenseCheckFailureReason.EvaluationLicenseExpired;
return(false);
}
//
// Check whether the expiration date is higher than possible - this points
// to someone adjusting their system calender while building a component in
// an attempt to have an eval license valid for a long time.
//
DateTime maxExpirationDate = DateTime.Now.AddDays(licenseKey.EvaluationDays);
if (licenseKey.ExpirationDate > maxExpirationDate)
{
if (traceSwitch.TraceVerbose)
{
Trace.WriteLine("IsKeyValid: License has invalid expiration date.");
Trace.WriteLine(" Evaluation Days: " + licenseKey.EvaluationDays);
Trace.WriteLine(" Max Expiration Date: " + maxExpirationDate);
Trace.Unindent();
}
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
return(false);
}
}
//
// If its past the Absolute Expiration Date, fail it even if the evaluation
// period is not expired
//
if (licenseKey.AbsoluteExpirationDate)
{
if (traceSwitch.TraceVerbose)
{
Trace.WriteLine(" License key has absolute expiration date.");
Trace.WriteLine(" Current Date: " + DateTime.Now);
Trace.WriteLine(" Expiration Date: " + licenseKey.ExpirationDate);
}
//
// Check whether the current date is beyond the expiration date.
//
if (DateTime.Now > licenseKey.ExpirationDate)
{
Trace.WriteLine("IsKeyValid: License is expired. ExpirationDate=" + licenseKey.ExpirationDate);
Trace.Unindent();
licenseCheckFailureReason = LicenseCheckFailureReason.EvaluationLicenseExpired;
return(false);
}
}
//
// Check to see if a 'time-bomb' has been set for the component itself.
//
if (
(licenseComponent.ExpirationDate.Ticks != (long)0) &&
(DateTime.Now > licenseComponent.ExpirationDate)
)
{
if (traceSwitch.TraceVerbose)
{
Trace.WriteLine("IsKeyValid: Component has expired. ExpirationDate=" + licenseComponent.ExpirationDate);
}
Trace.Unindent();
licenseCheckFailureReason = LicenseCheckFailureReason.ComponentExpired;
return(false);
}
//
// Passed all the tests, so we have a valid key
//
return(true);
}
//
// This routine gets the runtime license key associated with an
// application. It returns true if licence runtime key was
// retrieved from registry, or created and stored in registry.
// This is necessary ...
//
private bool GetApplicationRuntimeLicenseKey(LicenseKey licenseKey, Type type)
{
Microsoft.Win32.RegistryKey regKey = null;
bool SuccessfulWriteToRegisty = false;
//
// Here we check the registry to find if a runtime license exists.
// If we do not find one, assume that this is the first time this
// application is running.
//
String regKeyName = registryCacheName + "\\" + type.GUID.ToString();
try
{
regKey = Microsoft.Win32.Registry.CurrentUser.OpenSubKey( regKeyName, true );
}
catch( ArgumentException e )
{
Debug.WriteLine("Exception trying to read registry.");
Debug.WriteLine(e);
return false;
}
catch( System.Security.SecurityException e)
{
Debug.WriteLine("Exception reading registry.");
Debug.WriteLine(e);
return false;
}
if ( regKey == null )
{
//
// No key found in registry, so generate one and save it.
//
SuccessfulWriteToRegisty = GenerateRunTimeLicenseKeyFromDesignTime(licenseKey, type);
//
// If there was a problem writing to the registry,
// return false thereby failing the license
//
if(!SuccessfulWriteToRegisty)
{
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
return false;
}
try
{
regKey = Microsoft.Win32.Registry.CurrentUser.OpenSubKey( regKeyName, true );
}
catch( ArgumentException e )
{
Debug.WriteLine("Exception trying to read registry.");
Debug.WriteLine(e);
return false;
}
catch( System.Security.SecurityException e)
{
Debug.WriteLine("Exception reading registry.");
Debug.WriteLine(e);
return false;
}
}
if ( regKey != null )
{
this.licenseKeyString = (string) regKey.GetValue( "License" );
if ( this.licenseKeyString == null )
{
//
// Someone probably deleted key manually. Fail the license.
//
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
regKey.Close();
return false;
}
regKey.Close();
}
else
{
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
return false;
}
//
// this.licenseKeyString updated
//
return true;
}
//
// GetKey() is defined by LicFileLicenseProvider. It is called during
// GetLicense() processing in order to populate the LicenseKey property
// of the License object returned to the caller.
//
protected override string GetKey(Type type)
{
string key;
LicenseKey licenseKey;
if( traceSwitch.TraceVerbose )
{
Trace.WriteLine( String.Format( "GetKey(type={0})", type) );
}
Trace.Indent();
//
// We return whichever license key string we were presented in IsKeyValid(),
// unless we had been presented a 'design time evaluation' license.
// In the latter case, we generate a new license key that encodes the
// evaluation expiration date in it. This license key will subsequenty
// be embedded in the executable being built.
//
key = this.licenseKeyString;
//
// Myk, what do we do if we catch an exception here? we should
// never, because key should be valid. If we return null, will we
// still get a license? In that case, we should never throw any
// exceptions.
//
try
{
licenseKey = new LicenseKey( key );
}
catch( ArgumentException)
{
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
return null;
}
if( traceSwitch.TraceVerbose )
{
Trace.WriteLine( "GetKey: License type is " + licenseKey.Type);
}
if( licenseKey.Type == LicenseKeyType.DesignTimeEvaluation )
{
//
// Modify the license key to be a 'runtime evaluation' license by
// changing its type, setting the expiration date, and recalculating
// its hash value.
//
licenseKey.Type = LicenseKeyType.RuntimeEvaluation;
licenseKey.ExpirationDate = DateTime.Now.AddDays( licenseKey.EvaluationDays );
licenseKey.Hash = licenseKey.CalculateHash( licenseComponent.MasterLicensePassword );
key = licenseKey.ToString();
}
if( traceSwitch.TraceVerbose )
{
Trace.WriteLine("Generated license key: " + key);
}
Trace.Unindent();
//
// Return the new license key string to be embedded.
//
return key;
}
//
// This routine gets the runtime license key assocaited with an
// application. This is necessary ...
//protected LicenseKey GetApplicationRuntimeLicenseKey()
//{
//}
//
// IsKeyValid is defined by LicFileLicenseProvider, and is called
// during processing of GetLicense to determine if a given license
// key string represents a valid license.
//
// Notice that we are only given the string and the type of the
// class being licensed. We need to use the LicXLicenseComponent
// that is a member of the licensed instance, so we pull that out
// of the class field where it had been stored earlier.
//
// Note that in the case of an application licensed with an evaluation
// license, we may have to go to the registry to find an appropriate
// license key string.
//
protected override bool IsKeyValid(string licenseKeyString, Type type)
{
bool keyIsValid;
bool RunTimKeyFound = false;
LicenseKey licenseKey;
if ( traceSwitch.TraceVerbose )
{
Trace.WriteLine( String.Format( "IsKeyValid({0}, {1})", licenseKeyString, type ));
}
Trace.Indent();
//
// Save LicenseKeyString for later use in GetKey. If this is a
// runtime application using a design time key, it will be changed
// and stored for GetKey()
//
this.licenseKeyString = licenseKeyString;
//
// Create a LicenseKey object with the given license key string.
// The LicenseKey can throw an Exception for the int32.parse
// method. Fail it if does, b/c something is a matter with our
// license key string.
//
try
{
licenseKey = new LicenseKey(licenseKeyString);
}
catch( ArgumentException )
{
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
return false;
}
//
// If we are being invoked at runtime, and the license key string
// we are given is of type "design time evaluation", we are dealing
// with a licensed application (as opposed to a component). In
// this case, the runtime license we use needs to be in the
// registry. (The first time the application is run, we need to
// create this registry license).
//
// BUGBUG: It doesn't appear that the check for
// BUGBUG: "!licenseKey.AbsoluteExpirationDate is ever needed?
// BUGBUG: Need to do a full test cycle to make sure...
//
if(
( LicenseManager.CurrentContext.UsageMode == LicenseUsageMode.Runtime ) &&
( licenseKey.Type == LicenseKeyType.DesignTimeEvaluation ) &&
( !licenseKey.AbsoluteExpirationDate )
)
{
RunTimKeyFound = GetApplicationRuntimeLicenseKey( licenseKey, type);
if(!RunTimKeyFound)
{
// there was a problem writing or reading from the registry, so
// fail the license.
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
return false;
}
else
{
//
// this.licenseKeyString has changed to runtime application, so update
// licenseKey
//
try
{
licenseKey = new LicenseKey(this.licenseKeyString);
}
catch( ArgumentException )
{
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
return false;
}
}
}
#if delete
/* //
// Here we check the registry to find if a runtime license exists.
// If we do not find one, assume that this is the first time this
// application is running.
//
String regKeyName = registryCacheName + "\\" + type.GUID.ToString();
try
{
regKey = Microsoft.Win32.Registry.CurrentUser.OpenSubKey( regKeyName, true );
}
catch( ArgumentException e )
{
Trace.WriteLine("Exception building license.");
Trace.WriteLine(e);
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
return false;
}
// BUGBUG: SecurityException ?
if ( regKey == null )
{
generateruntimefromdesign();
regKey =
}
//
// Read the license key string from the registry, and use it
// to create a new licenseKey object. regKey will
// be null (undefined in VS) if the value doesn't exist.
//
if ( regKey != null )
{
// BUGBUG: SecurityException ?
this.licenseKeyString = (string) regKey.GetValue( "License" );
if ( this.licenseKeyString == NULL )
{
// fail.
}
try
{
licenseKey = new LicenseKey(this.licenseKeyString);
}
catch( ArgumentException e)
{
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
return false;
}
regKey.Close();
}
else
{
noRunTimeKeyFound = true;
}
//
// If the license key string was not found in the registry,
// it's assumed that this is the first run of an application.
// Create a new runtime license key and save it
// to the registry.
//
if( noRunTimeKeyFound )
{
//
// Modify the license key to be a 'runtime evaluation' license by
// changing its type, setting the expiration date, and recalculating
// its hash value. The serial number stays the same.
//
licenseKey.Type = LicenseKeyType.RuntimeEvaluation;
licenseKey.ExpirationDate = DateTime.Now.AddDays( licenseKey.EvaluationDays );
licenseKey.Hash = licenseKey.CalculateHash( licenseComponent.MasterLicensePassword );
//
// Save the new runtime license key string, as it is needed
// later by GetKey().
//
this.licenseKeyString = licenseKey.ToString();
//
// Write out to the Registry. CreateSubKey returns null if it fails.
// If an exceptions occurs, fail the license.
//
// Note that CreateSubKey may return a SecurityException, but the
// compiler throws an error.
//
// BUGBUG: proibably just need to refer to it as System.Security.SecurityException
//
try
{
regKey = Microsoft.Win32.Registry.CurrentUser.CreateSubKey( registryCacheName + "\\" + type.GUID.ToString() );
if ( regKey == null )
{
// BUGBUG: handle error.
}
regKey.SetValue( "License", (string) this.licenseKeyString );
}
catch( UnauthorizedAccessException e )
{
Trace.WriteLine("Exception writing to registry.");
Trace.WriteLine(e);
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
return false;
}
//catch( SecurityException e)
//{
// Trace.WriteLine("Exception writing to registry.");
// Trace.WriteLine(e);
// licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
// return false;
//}
if( regKey != null )
{
regKey.Close();
}
}
} // end of if licenseType is runtime using design time eval license
*/
#endif //delete
//
// Now we have ensured that we have the right key ( The .lic file
// was possibly replaced with a runtime key saved in the registry).
// First validate that the key is authentic.
//
keyIsValid = licenseKey.IsHashValid( licenseComponent.MasterLicensePassword );
if( !keyIsValid )
{
if( traceSwitch.TraceVerbose )
{
Trace.WriteLine("IsKeyValid: License key is not properly signed. Key=" + licenseKeyString);
}
Trace.Unindent();
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
return false;
}
//
// If the licenseKey is a runtime evaluation, check if:
// - expiration date is expired
// - expiration period is longer than maximum allowed
// - it has an absolute evaluation date, check if its
// not expired
// - a 'time-bomb' has been set for the component itself,
// and if so, should it go boom.
//
// If any of these returns a expired or invalid value, declare
// that the key is not valid by returning false after setting
// the licenseCheckFailureReason. Otherwise return true.
//
if( licenseKey.Type == LicenseKeyType.RuntimeEvaluation )
{
if( traceSwitch.TraceVerbose )
{
Trace.WriteLine(" License key is runtime evaluation.");
Trace.WriteLine(" Current Date: " + DateTime.Now);
Trace.WriteLine(" Expiration Date: " + licenseKey.ExpirationDate);
}
//
// Check whether the current date is beyond the expiration date.
//
if( DateTime.Now > licenseKey.ExpirationDate )
{
if( traceSwitch.TraceVerbose )
{
Trace.WriteLine("IsKeyValid: License is expired. ExpirationDate = " + licenseKey.ExpirationDate);
}
Trace.Unindent();
licenseCheckFailureReason = LicenseCheckFailureReason.EvaluationLicenseExpired;
return false;
}
//
// Check whether the expiration date is higher than possible - this points
// to someone adjusting their system calender while building a component in
// an attempt to have an eval license valid for a long time.
//
DateTime maxExpirationDate = DateTime.Now.AddDays( licenseKey.EvaluationDays );
if( licenseKey.ExpirationDate > maxExpirationDate )
{
if( traceSwitch.TraceVerbose )
{
Trace.WriteLine("IsKeyValid: License has invalid expiration date.");
Trace.WriteLine(" Evaluation Days: " + licenseKey.EvaluationDays);
Trace.WriteLine(" Max Expiration Date: " + maxExpirationDate);
Trace.Unindent();
}
licenseCheckFailureReason = LicenseCheckFailureReason.InvalidLicenseKey;
return false;
}
}
//
// If its past the Absolute Expiration Date, fail it even if the evaluation
// period is not expired
//
if( licenseKey.AbsoluteExpirationDate )
{
if( traceSwitch.TraceVerbose )
{
Trace.WriteLine(" License key has absolute expiration date.");
Trace.WriteLine(" Current Date: " + DateTime.Now);
Trace.WriteLine(" Expiration Date: " + licenseKey.ExpirationDate);
}
//
// Check whether the current date is beyond the expiration date.
//
if( DateTime.Now > licenseKey.ExpirationDate )
{
Trace.WriteLine("IsKeyValid: License is expired. ExpirationDate="+licenseKey.ExpirationDate);
Trace.Unindent();
licenseCheckFailureReason = LicenseCheckFailureReason.EvaluationLicenseExpired;
return false;
}
}
//
// Check to see if a 'time-bomb' has been set for the component itself.
//
if(
( licenseComponent.ExpirationDate.Ticks != (long)0 ) &&
( DateTime.Now > licenseComponent.ExpirationDate )
)
{
if( traceSwitch.TraceVerbose )
{
Trace.WriteLine("IsKeyValid: Component has expired. ExpirationDate=" + licenseComponent.ExpirationDate);
}
Trace.Unindent();
licenseCheckFailureReason = LicenseCheckFailureReason.ComponentExpired;
return false;
}
//
// Passed all the tests, so we have a valid key
//
return true;
}
public LicenseCheckFailedEventArgs(LicenseCheckFailureReason reason, Type licensedComponentType, object instance)
{
this.Reason = reason;
this.LicensedComponentType = licensedComponentType;
this.Component = instance;
}
