Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WCF / System.ServiceModel.Activation / System / ServiceModel / Activities / Activation / WorkflowServiceHostFactory.cs / 1305376 / WorkflowServiceHostFactory.cs
//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------
namespace System.ServiceModel.Activities.Activation
{
using System.Activities;
using System.Activities.XamlIntegration;
using System.IO;
using System.Globalization;
using System.Reflection;
using System.Runtime;
using System.Runtime.DurableInstancing;
using System.Security;
using System.Security.Permissions;
using System.ServiceModel.Activation;
using System.Web;
using System.Web.Compilation;
using System.Web.Hosting;
using System.Xaml;
using System.Xml;
using System.Xml.Linq;
public class WorkflowServiceHostFactory : ServiceHostFactoryBase
{
public override ServiceHostBase CreateServiceHost(string constructorString, Uri[] baseAddresses)
{
WorkflowServiceHost serviceHost = null;
if (string.IsNullOrEmpty(constructorString))
{
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.WorkflowServiceHostFactoryConstructorStringNotProvided));
}
if (baseAddresses == null)
{
throw FxTrace.Exception.ArgumentNull("baseAddresses");
}
if (baseAddresses.Length == 0)
{
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.BaseAddressesNotProvided));
}
if (!HostingEnvironment.IsHosted)
{
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.Hosting_ProcessNotExecutingUnderHostedContext("WorkflowServiceHostFactory.CreateServiceHost")));
}
// We expect most users will use .xamlx file instead of precompiled assembly
// Samples of xamlVirtualPath under all scenarios
// constructorString XamlFileBaseLocation xamlVirtualPath
// 1. Xamlx direct ~/sub/a.xamlx ~/sub/ ~/sub/a.xamlx
// 2. CBA with precompiled servicetypeinfo ~/sub/servicetypeinfo ~/sub/servicetypeinfo * no file will be found
// 3. CBA with xamlx sub/a.xamlx ~/ ~/sub/a.xamlx
// 4. Svc with precompiled servicetypeinfo ~/sub/servicetypeinfo ~/sub/servicetypeinfo * no file will be found
// 5. Svc with Xamlx ../a.xamlx ~/sub/ ~/a.xamlx
string xamlVirtualPath = VirtualPathUtility.Combine(AspNetEnvironment.Current.XamlFileBaseLocation, constructorString);
Stream activityStream;
string compiledCustomString;
if (GetServiceFileStreamOrCompiledCustomString(xamlVirtualPath, baseAddresses, out activityStream, out compiledCustomString))
{
object serviceObject;
using (activityStream)
{
//
BuildManager.GetReferencedAssemblies();
//XmlnsMappingHelper.EnsureMappingPassed();
XamlXmlReaderSettings xamlXmlReaderSettings = new XamlXmlReaderSettings();
xamlXmlReaderSettings.ProvideLineInfo = true;
XamlReader wrappedReader = ActivityXamlServices.CreateReader(new XamlXmlReader(XmlReader.Create(activityStream), xamlXmlReaderSettings));
if (TD.XamlServicesLoadStartIsEnabled())
{
TD.XamlServicesLoadStart();
}
serviceObject = XamlServices.Load(wrappedReader);
if (TD.XamlServicesLoadStopIsEnabled())
{
TD.XamlServicesLoadStop();
}
}
WorkflowService service = null;
if (serviceObject is Activity)
{
service = new WorkflowService
{
Body = (Activity)serviceObject
};
}
else if (serviceObject is WorkflowService)
{
service = (WorkflowService)serviceObject;
}
// If name of the service is not set
// service name = xaml file name with extension
// service namespace = IIS virtual path
// service config name = Activity.DisplayName
if (service != null)
{
if (service.Name == null)
{
string serviceName = VirtualPathUtility.GetFileName(xamlVirtualPath);
string serviceNamespace = String.Format(CultureInfo.InvariantCulture, "/{0}{1}", ServiceHostingEnvironment.SiteName, VirtualPathUtility.GetDirectory(ServiceHostingEnvironment.FullVirtualPath));
service.Name = XName.Get(XmlConvert.EncodeLocalName(serviceName), serviceNamespace);
if (service.ConfigurationName == null && service.Body != null)
{
service.ConfigurationName = XmlConvert.EncodeLocalName(service.Body.DisplayName);
}
}
serviceHost = CreateWorkflowServiceHost(service, baseAddresses);
}
}
else
{
Type activityType = this.GetTypeFromAssembliesInCurrentDomain(constructorString);
if (null == activityType)
{
activityType = GetTypeFromCompileCustomString(compiledCustomString, constructorString);
}
if (null == activityType)
{
//for file-less cases, try in referenced assemblies as CompileCustomString assemblies are empty.
BuildManager.GetReferencedAssemblies();
activityType = this.GetTypeFromAssembliesInCurrentDomain(constructorString);
}
if (null != activityType)
{
if (!TypeHelper.AreTypesCompatible(activityType, typeof(Activity)))
{
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.TypeNotActivity(activityType.FullName)));
}
Activity activity = (Activity)Activator.CreateInstance(activityType);
serviceHost = CreateWorkflowServiceHost(activity, baseAddresses);
}
}
if (serviceHost == null)
{
throw FxTrace.Exception.AsError(
new InvalidOperationException(SR.CannotResolveConstructorStringToWorkflowType(constructorString)));
}
//The Description.Name and Description.NameSpace aren't included intentionally - because
//in farm scenarios the sole and unique identifier is the service deployment URL
((IDurableInstancingOptions)serviceHost.DurableInstancingOptions).SetScopeName(
XName.Get(XmlConvert.EncodeLocalName(VirtualPathUtility.GetFileName(ServiceHostingEnvironment.FullVirtualPath)),
String.Format(CultureInfo.InvariantCulture, "/{0}{1}", ServiceHostingEnvironment.SiteName, VirtualPathUtility.GetDirectory(ServiceHostingEnvironment.FullVirtualPath))));
return serviceHost;
}
Type GetTypeFromAssembliesInCurrentDomain(string typeString)
{
Type activityType = Type.GetType(typeString, false);
if (null == activityType)
{
foreach (Assembly assembly in AppDomain.CurrentDomain.GetAssemblies())
{
activityType = assembly.GetType(typeString, false);
if (null != activityType)
{
break;
}
}
}
return activityType;
}
Type GetTypeFromCompileCustomString(string compileCustomString, string typeString)
{
if (string.IsNullOrEmpty(compileCustomString))
{
return null;
}
string[] components = compileCustomString.Split('|');
if (components.Length < 3)
{
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.InvalidCompiledString(compileCustomString)));
}
Type activityType = null;
for (int i = 3; i < components.Length; i++)
{
Assembly assembly = Assembly.Load(components[i]);
activityType = assembly.GetType(typeString, false);
if (activityType != null)
{
break;
}
}
return activityType;
}
protected virtual WorkflowServiceHost CreateWorkflowServiceHost(Activity activity, Uri[] baseAddresses)
{
return new WorkflowServiceHost(activity, baseAddresses);
}
protected virtual WorkflowServiceHost CreateWorkflowServiceHost(WorkflowService service, Uri[] baseAddresses)
{
return new WorkflowServiceHost(service, baseAddresses);
}
// The code is optimized for reducing impersonation
// true means serviceFileStream has been set; false means CompiledCustomString has been set
[Fx.Tag.SecurityNote(Critical = "Calls SecurityCritical method HostingEnvironmentWrapper.UnsafeImpersonate().",
Safe = "Demands unmanaged code permission, disposes impersonation context in a finally, and tightly scopes the usage of the umpersonation token.")]
[SecurityPermission(SecurityAction.Demand, UnmanagedCode = true)]
[SecuritySafeCritical]
bool GetServiceFileStreamOrCompiledCustomString(string virtualPath, Uri[] baseAddresses, out Stream serviceFileStream, out string compiledCustomString)
{
IDisposable unsafeImpersonate = null;
compiledCustomString = null;
serviceFileStream = null;
try
{
try
{
try
{
}
finally
{
unsafeImpersonate = HostingEnvironmentWrapper.UnsafeImpersonate();
}
if (HostingEnvironment.VirtualPathProvider.FileExists(virtualPath))
{
serviceFileStream = HostingEnvironment.VirtualPathProvider.GetFile(virtualPath).Open();
return true;
}
else
{
if (!AspNetEnvironment.Current.IsConfigurationBased)
{
compiledCustomString = BuildManager.GetCompiledCustomString(baseAddresses[0].AbsolutePath);
}
return false;
}
}
finally
{
if (null != unsafeImpersonate)
{
unsafeImpersonate.Dispose();
}
}
}
catch
{
throw;
}
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------
namespace System.ServiceModel.Activities.Activation
{
using System.Activities;
using System.Activities.XamlIntegration;
using System.IO;
using System.Globalization;
using System.Reflection;
using System.Runtime;
using System.Runtime.DurableInstancing;
using System.Security;
using System.Security.Permissions;
using System.ServiceModel.Activation;
using System.Web;
using System.Web.Compilation;
using System.Web.Hosting;
using System.Xaml;
using System.Xml;
using System.Xml.Linq;
public class WorkflowServiceHostFactory : ServiceHostFactoryBase
{
public override ServiceHostBase CreateServiceHost(string constructorString, Uri[] baseAddresses)
{
WorkflowServiceHost serviceHost = null;
if (string.IsNullOrEmpty(constructorString))
{
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.WorkflowServiceHostFactoryConstructorStringNotProvided));
}
if (baseAddresses == null)
{
throw FxTrace.Exception.ArgumentNull("baseAddresses");
}
if (baseAddresses.Length == 0)
{
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.BaseAddressesNotProvided));
}
if (!HostingEnvironment.IsHosted)
{
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.Hosting_ProcessNotExecutingUnderHostedContext("WorkflowServiceHostFactory.CreateServiceHost")));
}
// We expect most users will use .xamlx file instead of precompiled assembly
// Samples of xamlVirtualPath under all scenarios
// constructorString XamlFileBaseLocation xamlVirtualPath
// 1. Xamlx direct ~/sub/a.xamlx ~/sub/ ~/sub/a.xamlx
// 2. CBA with precompiled servicetypeinfo ~/sub/servicetypeinfo ~/sub/servicetypeinfo * no file will be found
// 3. CBA with xamlx sub/a.xamlx ~/ ~/sub/a.xamlx
// 4. Svc with precompiled servicetypeinfo ~/sub/servicetypeinfo ~/sub/servicetypeinfo * no file will be found
// 5. Svc with Xamlx ../a.xamlx ~/sub/ ~/a.xamlx
string xamlVirtualPath = VirtualPathUtility.Combine(AspNetEnvironment.Current.XamlFileBaseLocation, constructorString);
Stream activityStream;
string compiledCustomString;
if (GetServiceFileStreamOrCompiledCustomString(xamlVirtualPath, baseAddresses, out activityStream, out compiledCustomString))
{
object serviceObject;
using (activityStream)
{
//
BuildManager.GetReferencedAssemblies();
//XmlnsMappingHelper.EnsureMappingPassed();
XamlXmlReaderSettings xamlXmlReaderSettings = new XamlXmlReaderSettings();
xamlXmlReaderSettings.ProvideLineInfo = true;
XamlReader wrappedReader = ActivityXamlServices.CreateReader(new XamlXmlReader(XmlReader.Create(activityStream), xamlXmlReaderSettings));
if (TD.XamlServicesLoadStartIsEnabled())
{
TD.XamlServicesLoadStart();
}
serviceObject = XamlServices.Load(wrappedReader);
if (TD.XamlServicesLoadStopIsEnabled())
{
TD.XamlServicesLoadStop();
}
}
WorkflowService service = null;
if (serviceObject is Activity)
{
service = new WorkflowService
{
Body = (Activity)serviceObject
};
}
else if (serviceObject is WorkflowService)
{
service = (WorkflowService)serviceObject;
}
// If name of the service is not set
// service name = xaml file name with extension
// service namespace = IIS virtual path
// service config name = Activity.DisplayName
if (service != null)
{
if (service.Name == null)
{
string serviceName = VirtualPathUtility.GetFileName(xamlVirtualPath);
string serviceNamespace = String.Format(CultureInfo.InvariantCulture, "/{0}{1}", ServiceHostingEnvironment.SiteName, VirtualPathUtility.GetDirectory(ServiceHostingEnvironment.FullVirtualPath));
service.Name = XName.Get(XmlConvert.EncodeLocalName(serviceName), serviceNamespace);
if (service.ConfigurationName == null && service.Body != null)
{
service.ConfigurationName = XmlConvert.EncodeLocalName(service.Body.DisplayName);
}
}
serviceHost = CreateWorkflowServiceHost(service, baseAddresses);
}
}
else
{
Type activityType = this.GetTypeFromAssembliesInCurrentDomain(constructorString);
if (null == activityType)
{
activityType = GetTypeFromCompileCustomString(compiledCustomString, constructorString);
}
if (null == activityType)
{
//for file-less cases, try in referenced assemblies as CompileCustomString assemblies are empty.
BuildManager.GetReferencedAssemblies();
activityType = this.GetTypeFromAssembliesInCurrentDomain(constructorString);
}
if (null != activityType)
{
if (!TypeHelper.AreTypesCompatible(activityType, typeof(Activity)))
{
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.TypeNotActivity(activityType.FullName)));
}
Activity activity = (Activity)Activator.CreateInstance(activityType);
serviceHost = CreateWorkflowServiceHost(activity, baseAddresses);
}
}
if (serviceHost == null)
{
throw FxTrace.Exception.AsError(
new InvalidOperationException(SR.CannotResolveConstructorStringToWorkflowType(constructorString)));
}
//The Description.Name and Description.NameSpace aren't included intentionally - because
//in farm scenarios the sole and unique identifier is the service deployment URL
((IDurableInstancingOptions)serviceHost.DurableInstancingOptions).SetScopeName(
XName.Get(XmlConvert.EncodeLocalName(VirtualPathUtility.GetFileName(ServiceHostingEnvironment.FullVirtualPath)),
String.Format(CultureInfo.InvariantCulture, "/{0}{1}", ServiceHostingEnvironment.SiteName, VirtualPathUtility.GetDirectory(ServiceHostingEnvironment.FullVirtualPath))));
return serviceHost;
}
Type GetTypeFromAssembliesInCurrentDomain(string typeString)
{
Type activityType = Type.GetType(typeString, false);
if (null == activityType)
{
foreach (Assembly assembly in AppDomain.CurrentDomain.GetAssemblies())
{
activityType = assembly.GetType(typeString, false);
if (null != activityType)
{
break;
}
}
}
return activityType;
}
Type GetTypeFromCompileCustomString(string compileCustomString, string typeString)
{
if (string.IsNullOrEmpty(compileCustomString))
{
return null;
}
string[] components = compileCustomString.Split('|');
if (components.Length < 3)
{
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.InvalidCompiledString(compileCustomString)));
}
Type activityType = null;
for (int i = 3; i < components.Length; i++)
{
Assembly assembly = Assembly.Load(components[i]);
activityType = assembly.GetType(typeString, false);
if (activityType != null)
{
break;
}
}
return activityType;
}
protected virtual WorkflowServiceHost CreateWorkflowServiceHost(Activity activity, Uri[] baseAddresses)
{
return new WorkflowServiceHost(activity, baseAddresses);
}
protected virtual WorkflowServiceHost CreateWorkflowServiceHost(WorkflowService service, Uri[] baseAddresses)
{
return new WorkflowServiceHost(service, baseAddresses);
}
// The code is optimized for reducing impersonation
// true means serviceFileStream has been set; false means CompiledCustomString has been set
[Fx.Tag.SecurityNote(Critical = "Calls SecurityCritical method HostingEnvironmentWrapper.UnsafeImpersonate().",
Safe = "Demands unmanaged code permission, disposes impersonation context in a finally, and tightly scopes the usage of the umpersonation token.")]
[SecurityPermission(SecurityAction.Demand, UnmanagedCode = true)]
[SecuritySafeCritical]
bool GetServiceFileStreamOrCompiledCustomString(string virtualPath, Uri[] baseAddresses, out Stream serviceFileStream, out string compiledCustomString)
{
IDisposable unsafeImpersonate = null;
compiledCustomString = null;
serviceFileStream = null;
try
{
try
{
try
{
}
finally
{
unsafeImpersonate = HostingEnvironmentWrapper.UnsafeImpersonate();
}
if (HostingEnvironment.VirtualPathProvider.FileExists(virtualPath))
{
serviceFileStream = HostingEnvironment.VirtualPathProvider.GetFile(virtualPath).Open();
return true;
}
else
{
if (!AspNetEnvironment.Current.IsConfigurationBased)
{
compiledCustomString = BuildManager.GetCompiledCustomString(baseAddresses[0].AbsolutePath);
}
return false;
}
}
finally
{
if (null != unsafeImpersonate)
{
unsafeImpersonate.Dispose();
}
}
}
catch
{
throw;
}
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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