internal CmdletProvider CreateInstance()
{
object obj2 = null;
Exception innerException = null;
try
{
obj2 = Activator.CreateInstance(this.ImplementingType);
}
catch (TargetInvocationException exception2)
{
innerException = exception2.InnerException;
}
catch (MissingMethodException)
{
}
catch (MemberAccessException)
{
}
catch (ArgumentException)
{
}
if (obj2 == null)
{
ProviderNotFoundException exception3 = null;
if (innerException != null)
{
exception3 = new ProviderNotFoundException(this.Name, SessionStateCategory.CmdletProvider, "ProviderCtorException", SessionStateStrings.ProviderCtorException, new object[] { innerException.Message });
}
else
{
exception3 = new ProviderNotFoundException(this.Name, SessionStateCategory.CmdletProvider, "ProviderNotFoundInAssembly", SessionStateStrings.ProviderNotFoundInAssembly, new object[0]);
}
throw exception3;
}
CmdletProvider provider = obj2 as CmdletProvider;
provider.SetProviderInformation(this);
return(provider);
}
/// <summary>
/// Creates an instance of the provider.
/// </summary>
/// <returns>
/// An instance of the provider or null if one could not be created.
/// </returns>
/// <exception cref="ProviderNotFoundException">
/// If an instance of the provider could not be created because the
/// type could not be found in the assembly.
/// </exception>
internal Provider.CmdletProvider CreateInstance()
{
// It doesn't really seem that using thread local storage to store an
// instance of the provider is really much of a performance gain and it
// still causes problems with the CmdletProviderContext when piping two
// commands together that use the same provider.
// get-child -filter a*.txt | get-content
// This pipeline causes problems when using a cached provider instance because
// the CmdletProviderContext gets changed when get-content gets called.
// When get-content finishes writing content from the first output of get-child
// get-child gets control back and writes out a FileInfo but the WriteObject
// from get-content gets used because the CmdletProviderContext is still from
// that cmdlet.
// Possible solutions are to not cache the provider instance, or to maintain
// a CmdletProviderContext stack in ProviderBase. Each method invocation pushes
// the current context and the last action of the method pops back to the
// previous context.
#if USE_TLS
// Next see if we already have an instance in thread local storage
object providerInstance = Thread.GetData(instance);
if (providerInstance == null)
{
#else
object providerInstance = null;
#endif
// Finally create an instance of the class
Exception invocationException = null;
try
{
providerInstance =
Activator.CreateInstance(this.ImplementingType);
}
catch (TargetInvocationException targetException)
{
invocationException = targetException.InnerException;
}
catch (MissingMethodException)
{
}
catch (MemberAccessException)
{
}
catch (ArgumentException)
{
}
#if USE_TLS
// cache the instance in thread local storage
Thread.SetData(instance, providerInstance);
}
#endif
if (providerInstance == null)
{
ProviderNotFoundException e = null;
if (invocationException != null)
{
e =
new ProviderNotFoundException(
this.Name,
SessionStateCategory.CmdletProvider,
"ProviderCtorException",
SessionStateStrings.ProviderCtorException,
invocationException.Message);
}
else
{
e =
new ProviderNotFoundException(
this.Name,
SessionStateCategory.CmdletProvider,
"ProviderNotFoundInAssembly",
SessionStateStrings.ProviderNotFoundInAssembly);
}
throw e;
}
Provider.CmdletProvider result = providerInstance as Provider.CmdletProvider;
Dbg.Diagnostics.Assert(
result != null,
"DiscoverProvider should verify that the class is derived from CmdletProvider so this is just validation of that");
result.SetProviderInformation(this);
return result;
}
internal CmdletProvider CreateInstance()
{
object obj2 = null;
Exception innerException = null;
try
{
obj2 = Activator.CreateInstance(this.ImplementingType);
}
catch (TargetInvocationException exception2)
{
innerException = exception2.InnerException;
}
catch (MissingMethodException)
{
}
catch (MemberAccessException)
{
}
catch (ArgumentException)
{
}
if (obj2 == null)
{
ProviderNotFoundException exception3 = null;
if (innerException != null)
{
exception3 = new ProviderNotFoundException(this.Name, SessionStateCategory.CmdletProvider, "ProviderCtorException", SessionStateStrings.ProviderCtorException, new object[] { innerException.Message });
}
else
{
exception3 = new ProviderNotFoundException(this.Name, SessionStateCategory.CmdletProvider, "ProviderNotFoundInAssembly", SessionStateStrings.ProviderNotFoundInAssembly, new object[0]);
}
throw exception3;
}
CmdletProvider provider = obj2 as CmdletProvider;
provider.SetProviderInformation(this);
return provider;
}
internal Collection<ProviderInfo> GetProvider(PSSnapinQualifiedName providerName)
{
Collection<ProviderInfo> result = new Collection<ProviderInfo>();
if (providerName == null)
{
ProviderNotFoundException e =
new ProviderNotFoundException(
providerName.ToString(),
SessionStateCategory.CmdletProvider,
"ProviderNotFound",
SessionStateStrings.ProviderNotFound);
throw e;
}
// Get the provider from the providers container
List<ProviderInfo> matchingProviders = null;
if (!Providers.TryGetValue(providerName.ShortName, out matchingProviders))
{
// If the provider was not found, we may need to auto-mount it.
SessionStateInternal.MountDefaultDrive(providerName.ShortName, ExecutionContext);
if (!Providers.TryGetValue(providerName.ShortName, out matchingProviders))
{
ProviderNotFoundException e =
new ProviderNotFoundException(
providerName.ToString(),
SessionStateCategory.CmdletProvider,
"ProviderNotFound",
SessionStateStrings.ProviderNotFound);
throw e;
}
}
if (ExecutionContext.IsSingleShell && !String.IsNullOrEmpty(providerName.PSSnapInName))
{
// Be sure the PSSnapin/Module name matches
foreach (ProviderInfo provider in matchingProviders)
{
if (String.Equals(
provider.PSSnapInName,
providerName.PSSnapInName,
StringComparison.OrdinalIgnoreCase) ||
String.Equals(
provider.ModuleName,
providerName.PSSnapInName,
StringComparison.OrdinalIgnoreCase))
{
result.Add(provider);
}
}
}
else
{
foreach (ProviderInfo provider in matchingProviders)
{
result.Add(provider);
}
}
return result;
} // GetProvider
/// <summary>
/// Gets the provider of the specified name
/// </summary>
///
/// <param name="name">
/// The name of the provider to retrieve
/// </param>
///
/// <returns>
/// The provider of the given name
/// </returns>
///
/// <exception cref="ArgumentException">
/// If <paramref name="name"/> is null or empty.
/// </exception>
///
/// <exception cref="ProviderNotFoundException">
/// The provider with the specified <paramref name="name"/>
/// could not be found or the name was ambiguous.
/// If the name is ambiguous then the PSSnapin qualified name must
/// be specified.
/// </exception>
///
internal ProviderInfo GetSingleProvider(string name)
{
Collection<ProviderInfo> matchingProviders = GetProvider(name);
if (matchingProviders.Count != 1)
{
if (matchingProviders.Count == 0)
{
ProviderNotFoundException e =
new ProviderNotFoundException(
name,
SessionStateCategory.CmdletProvider,
"ProviderNotFound",
SessionStateStrings.ProviderNotFound);
throw e;
}
else
{
throw NewAmbiguousProviderName(name, matchingProviders);
}
}
return matchingProviders[0];
}
} // IsProviderLoaded
/// <summary>
/// Gets the provider of the specified name
/// </summary>
///
/// <param name="name">
/// The name of the provider to retrieve
/// </param>
///
/// <returns>
/// The provider of the given name
/// </returns>
///
/// <exception cref="ArgumentException">
/// If <paramref name="name"/> is null or empty.
/// </exception>
///
/// <exception cref="ProviderNotFoundException">
/// The provider with the specified <paramref name="name"/>
/// could not be found.
/// </exception>
///
internal Collection<ProviderInfo> GetProvider(string name)
{
if (String.IsNullOrEmpty(name))
{
throw PSTraceSource.NewArgumentException("name");
}
PSSnapinQualifiedName providerName = PSSnapinQualifiedName.GetInstance(name);
if (providerName == null)
{
ProviderNotFoundException e =
new ProviderNotFoundException(
name,
SessionStateCategory.CmdletProvider,
"ProviderNotFoundBadFormat",
SessionStateStrings.ProviderNotFoundBadFormat);
throw e;
}
return GetProvider(providerName);
}
/// <summary>
/// Removes the provider of the given name.
/// </summary>
///
/// <param name="providerName">
/// The name of the provider to remove.
/// </param>
///
/// <param name="force">
/// Determines if the provider should be removed forcefully even if there were
/// drives present or errors.
/// </param>
///
/// <param name="context">
/// The context under which the command is being run.
/// </param>
///
/// <error cref="ArgumentNullException">
/// If <paramref name="providerName"/> is null.
/// </error>
///
/// <error cref="SessionStateException">
/// There are still drives associated with this provider,
/// and the "force" option was not specified.
/// </error>
///
/// <error cref="ProviderNotFoundException">
/// A provider with name <paramref name="providerName"/> could not be found.
/// </error>
///
/// <error>
/// If a provider throws an exception it gets written to the <paramref name="context"/>.
/// </error>
///
/// <exception cref="ArgumentException">
/// If <paramref name="providerName"/> is null or empty.
/// </exception>
///
/// <exception cref="ArgumentNullException">
/// If <paramref name="context"/> is null.
/// </exception>
///
/// <remarks>
/// All drives associated with the provider must be removed before the provider
/// can be removed. Call SessionState.GetDrivesForProvider() to determine if there
/// are any drives associated with the provider. A SessionStateException
/// will be written to the context if any such drives do exist.
/// </remarks>
///
internal void RemoveProvider(
string providerName,
bool force,
CmdletProviderContext context)
{
if (context == null)
{
throw PSTraceSource.NewArgumentNullException("context");
}
if (String.IsNullOrEmpty(providerName))
{
throw PSTraceSource.NewArgumentException("providerName");
}
bool errors = false;
ProviderInfo provider = null;
try
{
provider = GetSingleProvider(providerName);
}
catch (ProviderNotFoundException)
{
return;
}
try
{
// First get an instance of the provider to make sure it exists
Provider.CmdletProvider providerBase = GetProviderInstance(provider);
if (providerBase == null)
{
ProviderNotFoundException e = new ProviderNotFoundException(
providerName,
SessionStateCategory.CmdletProvider,
"ProviderNotFound",
SessionStateStrings.ProviderNotFound);
context.WriteError(new ErrorRecord(e.ErrorRecord, e));
errors = true;
}
else
{
// See if there are any drives present for the provider
int driveCount = 0;
foreach (PSDriveInfo drive in GetDrivesForProvider(providerName))
{
if (drive != null)
{
++driveCount;
break;
}
}
if (driveCount > 0)
{
if (force)
{
// Forcefully remove all the drives
foreach (PSDriveInfo drive in GetDrivesForProvider(providerName))
{
if (drive != null)
{
RemoveDrive(drive, true, null);
}
}
}
else
{
errors = true;
// Since there are still drives associated with the provider
// the provider cannot be removed
SessionStateException e = new SessionStateException(
providerName,
SessionStateCategory.CmdletProvider,
"RemoveDrivesBeforeRemovingProvider",
SessionStateStrings.RemoveDrivesBeforeRemovingProvider,
ErrorCategory.InvalidOperation);
context.WriteError(new ErrorRecord(e.ErrorRecord, e));
return;
}
}
// Now tell the provider that they are going to be removed by
// calling the Stop method
try
{
providerBase.Stop(context);
}
catch (LoopFlowException)
{
throw;
}
catch (PipelineStoppedException)
{
throw;
}
catch (ActionPreferenceStopException)
{
throw;
}
}
}
catch (LoopFlowException)
{
throw;
}
catch (PipelineStoppedException)
{
throw;
}
catch (ActionPreferenceStopException)
{
throw;
}
catch (Exception e)
{
CommandProcessorBase.CheckForSevereException(e);
errors = true;
context.WriteError(
new ErrorRecord(
e,
"RemoveProviderUnexpectedException",
ErrorCategory.InvalidArgument,
providerName));
}
finally
{
if (force || !errors)
{
// Log the provider stopped event
MshLog.LogProviderLifecycleEvent(
this.ExecutionContext,
providerName,
ProviderState.Stopped);
RemoveProviderFromCollection(provider);
ProvidersCurrentWorkingDrive.Remove(provider);
#if RELATIONSHIP_SUPPORTED
// 2004/11/24-JeffJon - Relationships have been removed from the Exchange release
// Now make sure no relationship reference this provider
relationships.ProcessRelationshipsOnCmdletProviderRemoval (providerName);
#endif
}
}
} // RemoveProvider
/// <summary>
/// Creates an instance of the provider
/// </summary>
///
/// <returns>
/// An instance of the provider or null if one could not be created.
/// </returns>
///
/// <exception cref="ProviderNotFoundException">
/// If an instance of the provider could not be created because the
/// type could not be found in the assembly.
/// </exception>
///
internal Provider.CmdletProvider CreateInstance()
{
// It doesn't really seem that using thread local storage to store an
// instance of the provider is really much of a performance gain and it
// still causes problems with the CmdletProviderContext when piping two
// commands together that use the same provider.
// get-child -filter a*.txt | get-content
// This pipeline causes problems when using a cached provider instance because
// the CmdletProviderContext gets changed when get-content gets called.
// When get-content finishes writing content from the first output of get-child
// get-child gets control back and writes out a FileInfo but the WriteObject
// from get-content gets used because the CmdletProviderContext is still from
// that cmdlet.
// Possible solutions are to not cache the provider instance, or to maintain
// a CmdletProviderContext stack in ProviderBase. Each method invocation pushes
// the current context and the last action of the method pops back to the
// previous context.
#if USE_TLS
// Next see if we already have an instance in thread local storage
object providerInstance = Thread.GetData(instance);
if (providerInstance == null)
{
#else
object providerInstance = null;
#endif
// Finally create an instance of the class
Exception invocationException = null;
try
{
providerInstance =
Activator.CreateInstance(this.ImplementingType);
}
catch (TargetInvocationException targetException)
{
invocationException = targetException.InnerException;
}
catch (MissingMethodException)
{
}
catch (MemberAccessException)
{
}
catch (ArgumentException)
{
}
#if USE_TLS
// cache the instance in thread local storage
Thread.SetData(instance, providerInstance);
}
#endif
if (providerInstance == null)
{
ProviderNotFoundException e = null;
if (invocationException != null)
{
e =
new ProviderNotFoundException(
this.Name,
SessionStateCategory.CmdletProvider,
"ProviderCtorException",
SessionStateStrings.ProviderCtorException,
invocationException.Message);
}
else
{
e =
new ProviderNotFoundException(
this.Name,
SessionStateCategory.CmdletProvider,
"ProviderNotFoundInAssembly",
SessionStateStrings.ProviderNotFoundInAssembly);
}
throw e;
}
Provider.CmdletProvider result = providerInstance as Provider.CmdletProvider;
Dbg.Diagnostics.Assert(
result != null,
"DiscoverProvider should verify that the class is derived from CmdletProvider so this is just validation of that");
result.SetProviderInformation(this);
return result;
}
internal void RemoveProvider(string providerName, bool force, CmdletProviderContext context)
{
if (context == null)
{
throw PSTraceSource.NewArgumentNullException("context");
}
if (string.IsNullOrEmpty(providerName))
{
throw PSTraceSource.NewArgumentException("providerName");
}
bool flag = false;
ProviderInfo singleProvider = null;
try
{
singleProvider = this.GetSingleProvider(providerName);
}
catch (ProviderNotFoundException)
{
return;
}
try
{
CmdletProvider providerInstance = this.GetProviderInstance(singleProvider);
if (providerInstance == null)
{
ProviderNotFoundException replaceParentContainsErrorRecordException = new ProviderNotFoundException(providerName, SessionStateCategory.CmdletProvider, "ProviderNotFound", SessionStateStrings.ProviderNotFound, new object[0]);
context.WriteError(new ErrorRecord(replaceParentContainsErrorRecordException.ErrorRecord, replaceParentContainsErrorRecordException));
flag = true;
}
else
{
int num = 0;
foreach (PSDriveInfo info2 in this.GetDrivesForProvider(providerName))
{
if (info2 != null)
{
num++;
break;
}
}
if (num > 0)
{
if (force)
{
foreach (PSDriveInfo info3 in this.GetDrivesForProvider(providerName))
{
if (info3 != null)
{
this.RemoveDrive(info3, true, null);
}
}
}
else
{
flag = true;
SessionStateException exception2 = new SessionStateException(providerName, SessionStateCategory.CmdletProvider, "RemoveDrivesBeforeRemovingProvider", SessionStateStrings.RemoveDrivesBeforeRemovingProvider, ErrorCategory.InvalidOperation, new object[0]);
context.WriteError(new ErrorRecord(exception2.ErrorRecord, exception2));
return;
}
}
try
{
providerInstance.Stop(context);
}
catch (LoopFlowException)
{
throw;
}
catch (PipelineStoppedException)
{
throw;
}
catch (ActionPreferenceStopException)
{
throw;
}
}
}
catch (LoopFlowException)
{
throw;
}
catch (PipelineStoppedException)
{
throw;
}
catch (ActionPreferenceStopException)
{
throw;
}
catch (Exception exception3)
{
CommandProcessorBase.CheckForSevereException(exception3);
flag = true;
context.WriteError(new ErrorRecord(exception3, "RemoveProviderUnexpectedException", ErrorCategory.InvalidArgument, providerName));
}
finally
{
if (force || !flag)
{
MshLog.LogProviderLifecycleEvent(this.ExecutionContext, providerName, ProviderState.Stopped);
this.RemoveProviderFromCollection(singleProvider);
this.ProvidersCurrentWorkingDrive.Remove(singleProvider);
}
}
}
internal ProviderInfo GetSingleProvider(string name)
{
Collection<ProviderInfo> provider = this.GetProvider(name);
if (provider.Count == 1)
{
return provider[0];
}
if (provider.Count == 0)
{
ProviderNotFoundException exception = new ProviderNotFoundException(name, SessionStateCategory.CmdletProvider, "ProviderNotFound", SessionStateStrings.ProviderNotFound, new object[0]);
throw exception;
}
throw NewAmbiguousProviderName(name, provider);
}
internal Collection<ProviderInfo> GetProvider(PSSnapinQualifiedName providerName)
{
Collection<ProviderInfo> collection = new Collection<ProviderInfo>();
if (providerName == null)
{
ProviderNotFoundException exception = new ProviderNotFoundException(providerName.ToString(), SessionStateCategory.CmdletProvider, "ProviderNotFound", SessionStateStrings.ProviderNotFound, new object[0]);
throw exception;
}
string pName = null;
List<ProviderInfo> list = null;
if (!this.Providers.TryGetValue(providerName.ShortName, out list))
{
MountDefaultDrive(providerName.ShortName, this._context);
pName = (OSHelper.IsUnix && providerName.ShortName == "/") ? "FileSystem" : providerName.ShortName;
if (pName == "env") { pName = "Environment"; }
else if (pName == "cert") { pName = "Certificate"; }
else if (pName == "reg") { pName = "Registry"; }
if (!this.Providers.TryGetValue(pName, out list))
{
ProviderNotFoundException exception2 = new ProviderNotFoundException(providerName.ToString(), SessionStateCategory.CmdletProvider, "ProviderNotFound", SessionStateStrings.ProviderNotFound, new object[0]);
throw exception2;
}
}
if (string.IsNullOrEmpty (pName)) pName = providerName.PSSnapInName;
if (this.ExecutionContext.IsSingleShell && !string.IsNullOrEmpty(providerName.PSSnapInName))
{
foreach (ProviderInfo info in list)
{
if (string.Equals(info.PSSnapInName, pName, StringComparison.OrdinalIgnoreCase) || string.Equals(info.ModuleName, pName, StringComparison.OrdinalIgnoreCase))
{
collection.Add(info);
}
}
return collection;
}
foreach (ProviderInfo info2 in list)
{
collection.Add(info2);
}
return collection;
}
