internal AliasInfo SetAliasItem(AliasInfo aliasToSet, bool force, CommandOrigin origin = CommandOrigin.Internal)
{
if (!this.GetAliases().ContainsKey(aliasToSet.Name))
{
if (this.GetAliases().Count > (this.AliasCapacity.FastValue - 1))
{
SessionStateOverflowException exception = new SessionStateOverflowException(aliasToSet.Name, SessionStateCategory.Alias, "AliasOverflow", SessionStateStrings.AliasOverflow, new object[] { this.AliasCapacity.FastValue });
throw exception;
}
this.GetAliases()[aliasToSet.Name] = aliasToSet;
}
else
{
AliasInfo valueToCheck = this.GetAliases()[aliasToSet.Name];
SessionState.ThrowIfNotVisible(origin, valueToCheck);
if (((valueToCheck.Options & ScopedItemOptions.Constant) != ScopedItemOptions.None) || (((valueToCheck.Options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None) && !force))
{
SessionStateUnauthorizedAccessException exception2 = new SessionStateUnauthorizedAccessException(aliasToSet.Name, SessionStateCategory.Alias, "AliasNotWritable", SessionStateStrings.AliasNotWritable);
throw exception2;
}
if (((aliasToSet.Options & ScopedItemOptions.AllScope) == ScopedItemOptions.None) && ((valueToCheck.Options & ScopedItemOptions.AllScope) != ScopedItemOptions.None))
{
SessionStateUnauthorizedAccessException exception3 = new SessionStateUnauthorizedAccessException(aliasToSet.Name, SessionStateCategory.Alias, "AliasAllScopeOptionCannotBeRemoved", SessionStateStrings.AliasAllScopeOptionCannotBeRemoved);
throw exception3;
}
this.RemoveAliasFromCache(valueToCheck.Name, valueToCheck.Definition);
this.GetAliases()[aliasToSet.Name] = aliasToSet;
}
this.AddAliasToCache(aliasToSet.Name, aliasToSet.Definition);
return(this.GetAliases()[aliasToSet.Name]);
}
internal void Update(System.Management.Automation.ScriptBlock newFunction, bool force, ScopedItemOptions options, string helpFile)
{
if (newFunction == null)
{
throw PSTraceSource.NewArgumentNullException("function");
}
if ((this._options & ScopedItemOptions.Constant) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(base.Name, SessionStateCategory.Function, "FunctionIsConstant", SessionStateStrings.FunctionIsConstant);
throw exception;
}
if (!force && ((this._options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None))
{
SessionStateUnauthorizedAccessException exception2 = new SessionStateUnauthorizedAccessException(base.Name, SessionStateCategory.Function, "FunctionIsReadOnly", SessionStateStrings.FunctionIsReadOnly);
throw exception2;
}
this._scriptBlock = newFunction;
base.SetModule(newFunction.Module);
this._commandMetadata = null;
base._parameterSets = null;
base._externalCommandMetadata = null;
if (options != ScopedItemOptions.Unspecified)
{
this.Options = options;
}
this._helpFile = helpFile;
}
private void SetValue(object value)
{
if ((this.options & (ScopedItemOptions.Constant | ScopedItemOptions.ReadOnly)) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(this.name, SessionStateCategory.Variable, "VariableNotWritable", SessionStateStrings.VariableNotWritable);
throw exception;
}
object obj2 = value;
if ((this.attributes != null) && (this.attributes.Count > 0))
{
obj2 = TransformValue(this.attributes, value);
if (!this.IsValidValue(obj2))
{
ValidationMetadataException exception2 = new ValidationMetadataException("ValidateSetFailure", null, Metadata.InvalidValueFailure, new object[] { this.name, (obj2 != null) ? obj2.ToString() : "" });
throw exception2;
}
}
if (obj2 != null)
{
obj2 = CopyMutableValues(obj2);
}
this._value = obj2;
this.DebuggerCheckVariableWrite();
}
internal AliasInfo SetAliasValue(string name, string value, System.Management.Automation.ExecutionContext context, bool force, CommandOrigin origin)
{
if (!this.GetAliases().ContainsKey(name))
{
if (this.GetAliases().Count > (this.AliasCapacity.FastValue - 1))
{
SessionStateOverflowException exception = new SessionStateOverflowException(name, SessionStateCategory.Alias, "AliasOverflow", SessionStateStrings.AliasOverflow, new object[] { this.AliasCapacity.FastValue });
throw exception;
}
this.GetAliases()[name] = new AliasInfo(name, value, context);
}
else
{
AliasInfo valueToCheck = this.GetAliases()[name];
if (((valueToCheck.Options & ScopedItemOptions.Constant) != ScopedItemOptions.None) || (!force && ((valueToCheck.Options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None)))
{
SessionStateUnauthorizedAccessException exception2 = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Alias, "AliasNotWritable", SessionStateStrings.AliasNotWritable);
throw exception2;
}
SessionState.ThrowIfNotVisible(origin, valueToCheck);
this.RemoveAliasFromCache(valueToCheck.Name, valueToCheck.Definition);
if (force)
{
this.GetAliases().Remove(name);
valueToCheck = new AliasInfo(name, value, context);
this.GetAliases()[name] = valueToCheck;
}
else
{
valueToCheck.SetDefinition(value, false);
}
}
this.AddAliasToCache(name, value);
return(this.GetAliases()[name]);
}
internal void SetOptions(ScopedItemOptions newOptions, bool force)
{
if ((this.options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(base.Name, SessionStateCategory.Cmdlet, "CmdletIsReadOnly", SessionStateStrings.CmdletIsReadOnly);
throw exception;
}
this.options = newOptions;
}
internal void SetDefinition(string definition, bool force)
{
if (((this.options & ScopedItemOptions.Constant) != ScopedItemOptions.None) || (!force && ((this.options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None)))
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(base.Name, SessionStateCategory.Alias, "AliasNotWritable", SessionStateStrings.AliasNotWritable);
throw exception;
}
this._definition = definition;
}
internal void SetOptions(ScopedItemOptions newOptions, bool force)
{
// Check to see if the variable is constant or readonly, if so
// throw an exception because the options cannot be changed.
if (IsConstant || (!force && IsReadOnly))
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
Name,
SessionStateCategory.Variable,
"VariableNotWritable",
SessionStateStrings.VariableNotWritable);
throw e;
}
// Now check to see if the caller is trying to set
// the options to constant. This is only allowed at
// variable creation
if ((newOptions & ScopedItemOptions.Constant) != 0)
{
// user is trying to set the variable to constant after
// creating the variable. Do not allow this (as per spec).
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
Name,
SessionStateCategory.Variable,
"VariableCannotBeMadeConstant",
SessionStateStrings.VariableCannotBeMadeConstant);
throw e;
}
// Now check to see if the caller is trying to
// remove the AllScope option. This is not allowed
// at any time.
if (IsAllScope && ((newOptions & ScopedItemOptions.AllScope) == 0))
{
// user is trying to remove the AllScope option from the variable.
// Do not allow this (as per spec).
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
Name,
SessionStateCategory.Variable,
"VariableAllScopeOptionCannotBeRemoved",
SessionStateStrings.VariableAllScopeOptionCannotBeRemoved);
throw e;
}
_options = newOptions;
}
internal void SetDefinition(string definition, bool force)
{
if (((this.options & ScopedItemOptions.Constant) != ScopedItemOptions.None) || (!force && ((this.options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None)))
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(base.Name, SessionStateCategory.Alias, "AliasNotWritable", SessionStateStrings.AliasNotWritable);
throw exception;
}
this._definition = definition;
}
internal void SetDefinition(string definition, bool force)
{
if ((this.options & ScopedItemOptions.Constant) != ScopedItemOptions.None || !force && (this.options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException unauthorizedAccessException = new SessionStateUnauthorizedAccessException(this.Name, SessionStateCategory.Alias, "AliasNotWritable");
AliasInfo.tracer.TraceException((Exception)unauthorizedAccessException);
throw unauthorizedAccessException;
}
this._definition = definition;
}
private static void CheckVariableCanBeChanged(PSVariable variable, bool force = false)
{
if ((variable.ItemOptions.HasFlag(ScopedItemOptions.ReadOnly) && !force) ||
variable.ItemOptions.HasFlag(ScopedItemOptions.Constant))
{
var ex = SessionStateUnauthorizedAccessException.CreateVariableNotWritableError(variable);
throw ex;
}
ThrowIfVariableIsPrivate(variable);
}
internal FunctionInfo SetFunction(string name, ScriptBlock function, FunctionInfo originalFunction, ScopedItemOptions options, bool force, CommandOrigin origin, System.Management.Automation.ExecutionContext context, string helpFile, Func <string, ScriptBlock, FunctionInfo, ScopedItemOptions, System.Management.Automation.ExecutionContext, string, FunctionInfo> functionFactory)
{
if (!this.GetFunctions().ContainsKey(name))
{
if (this.GetFunctions().Count > (this.FunctionCapacity.FastValue - 1))
{
SessionStateOverflowException exception = new SessionStateOverflowException(name, SessionStateCategory.Function, "FunctionOverflow", SessionStateStrings.FunctionOverflow, new object[] { this.FunctionCapacity.FastValue });
throw exception;
}
FunctionInfo info = functionFactory(name, function, originalFunction, options, context, helpFile);
this.GetFunctions()[name] = info;
if (IsFunctionOptionSet(info, ScopedItemOptions.AllScope))
{
this.GetAllScopeFunctions()[name] = info;
}
}
else
{
FunctionInfo valueToCheck = this.GetFunctions()[name];
SessionState.ThrowIfNotVisible(origin, valueToCheck);
if (IsFunctionOptionSet(valueToCheck, ScopedItemOptions.Constant) || (!force && IsFunctionOptionSet(valueToCheck, ScopedItemOptions.ReadOnly)))
{
SessionStateUnauthorizedAccessException exception2 = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Function, "FunctionNotWritable", SessionStateStrings.FunctionNotWritable);
throw exception2;
}
if ((options & ScopedItemOptions.Constant) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException exception3 = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Function, "FunctionCannotBeMadeConstant", SessionStateStrings.FunctionCannotBeMadeConstant);
throw exception3;
}
if (((options & ScopedItemOptions.AllScope) == ScopedItemOptions.None) && IsFunctionOptionSet(valueToCheck, ScopedItemOptions.AllScope))
{
SessionStateUnauthorizedAccessException exception4 = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Function, "FunctionAllScopeOptionCannotBeRemoved", SessionStateStrings.FunctionAllScopeOptionCannotBeRemoved);
throw exception4;
}
FunctionInfo info3 = valueToCheck;
FunctionInfo newFunction = null;
if (info3 != null)
{
newFunction = functionFactory(name, function, originalFunction, options, context, helpFile);
if (!info3.GetType().Equals(newFunction.GetType()) || (((info3.Options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None) && force))
{
this.GetFunctions()[name] = newFunction;
}
else
{
bool flag2 = force || ((options & ScopedItemOptions.ReadOnly) == ScopedItemOptions.None);
info3.Update(newFunction, flag2, options, helpFile);
}
}
}
return(this.GetFunctions()[name]);
}
internal void RemoveAlias(string name, bool force)
{
if (this.GetAliases().ContainsKey(name))
{
AliasInfo info = this.GetAliases()[name];
if (((info.Options & ScopedItemOptions.Constant) != ScopedItemOptions.None) || (!force && ((info.Options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None)))
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Alias, "AliasNotRemovable", SessionStateStrings.AliasNotRemovable);
throw exception;
}
this.RemoveAliasFromCache(info.Name, info.Definition);
}
this.GetAliases().Remove(name);
}
internal override bool CanRenameItem(object item)
{
bool flag = false;
FunctionInfo info = item as FunctionInfo;
if (info == null)
{
return flag;
}
if (((info.Options & ScopedItemOptions.Constant) != ScopedItemOptions.None) || (((info.Options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None) && (base.Force == 0)))
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(info.Name, SessionStateCategory.Function, "CannotRenameFunction", SessionStateStrings.CannotRenameFunction);
throw exception;
}
return true;
}
internal override bool CanRenameItem(object item)
{
bool flag = false;
PSVariable variable = item as PSVariable;
if (variable == null)
{
return flag;
}
if (((variable.Options & ScopedItemOptions.Constant) != ScopedItemOptions.None) || (((variable.Options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None) && (base.Force == 0)))
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(variable.Name, SessionStateCategory.Variable, "CannotRenameVariable", SessionStateStrings.CannotRenameVariable);
throw exception;
}
return true;
}
/// <summary>
/// Verifies the constraints and attributes before setting the value
/// </summary>
/// <param name="value">
/// The value to be set.
/// </param>
/// <exception cref="SessionStateUnauthorizedAccessException">
/// If the variable is read-only or constant.
/// </exception>
/// <exception cref="ValidationMetadataException">
/// If the validation metadata throws an exception or the value doesn't
/// pass the validation metadata.
/// </exception>
private void SetValue(object value)
{
// Check to see if the variable is writable
if ((_options & (ScopedItemOptions.ReadOnly | ScopedItemOptions.Constant)) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
Name,
SessionStateCategory.Variable,
"VariableNotWritable",
SessionStateStrings.VariableNotWritable);
throw e;
}
// Now perform all ArgumentTransformations that are needed
object transformedValue = value;
if (_attributes != null && _attributes.Count > 0)
{
transformedValue = TransformValue(_attributes, value);
// Next check to make sure the value is valid
if (!IsValidValue(transformedValue))
{
ValidationMetadataException e = new ValidationMetadataException(
"ValidateSetFailure",
null,
Metadata.InvalidValueFailure,
Name,
((transformedValue != null) ? transformedValue.ToString() : "$null"));
throw e;
}
}
if (transformedValue != null)
{
transformedValue = CopyMutableValues(transformedValue);
}
// Set the value before triggering any write breakpoints
_value = transformedValue;
DebuggerCheckVariableWrite();
}
internal void RemoveFunction(string name, bool force)
{
if (this.GetFunctions().ContainsKey(name))
{
FunctionInfo function = this.GetFunctions()[name];
if (IsFunctionOptionSet(function, ScopedItemOptions.Constant) || (!force && IsFunctionOptionSet(function, ScopedItemOptions.ReadOnly)))
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Function, "FunctionNotRemovable", SessionStateStrings.FunctionNotRemovable);
throw exception;
}
if (IsFunctionOptionSet(function, ScopedItemOptions.AllScope))
{
this.GetAllScopeFunctions().Remove(name);
}
}
this.GetFunctions().Remove(name);
}
/// <summary>
/// Updates a function.
/// </summary>
/// <param name="newFunction">
/// The script block that the function should represent.
/// </param>
/// <param name="force">
/// If true, the script block will be applied even if the filter is ReadOnly.
/// </param>
/// <param name="options">
/// Any options to set on the new function, null if none.
/// </param>
/// <param name="helpFile">
/// The helpfile for this function.
/// </param>
/// <exception cref="ArgumentNullException">
/// If <paramref name="newFunction"/> is null.
/// </exception>
internal void Update(ScriptBlock newFunction, bool force, ScopedItemOptions options, string helpFile)
{
if (newFunction == null)
{
throw PSTraceSource.NewArgumentNullException("function");
}
if ((_options & ScopedItemOptions.Constant) != 0)
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
Name,
SessionStateCategory.Function,
"FunctionIsConstant",
SessionStateStrings.FunctionIsConstant);
throw e;
}
if (!force && (_options & ScopedItemOptions.ReadOnly) != 0)
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
Name,
SessionStateCategory.Function,
"FunctionIsReadOnly",
SessionStateStrings.FunctionIsReadOnly);
throw e;
}
_scriptBlock = newFunction;
this.Module = newFunction.Module;
_commandMetadata = null;
this._parameterSets = null;
this.ExternalCommandMetadata = null;
if (options != ScopedItemOptions.Unspecified)
{
this.Options = options;
}
_helpFile = helpFile;
}
internal PSVariable NewVariable(PSVariable newVariable, bool force, SessionStateInternal sessionState)
{
PSVariable variable;
bool flag = this.TryGetVariable(newVariable.Name, this.ScopeOrigin, true, out variable);
if (flag)
{
if (((variable == null) || variable.IsConstant) || (!force && variable.IsReadOnly))
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(newVariable.Name, SessionStateCategory.Variable, "VariableNotWritable", SessionStateStrings.VariableNotWritable);
throw exception;
}
if (variable is LocalVariable)
{
SessionStateUnauthorizedAccessException exception2 = new SessionStateUnauthorizedAccessException(newVariable.Name, SessionStateCategory.Variable, "VariableNotWritableRare", SessionStateStrings.VariableNotWritableRare);
throw exception2;
}
if (!object.ReferenceEquals(newVariable, variable))
{
variable.WasRemoved = true;
variable = newVariable;
}
}
else
{
variable = newVariable;
}
if (!flag && (this._variables.Count > (this.VariableCapacity.FastValue - 1)))
{
SessionStateOverflowException exception3 = new SessionStateOverflowException(newVariable.Name, SessionStateCategory.Variable, "VariableOverflow", SessionStateStrings.VariableOverflow, new object[] { this.VariableCapacity.FastValue });
throw exception3;
}
if (System.Management.Automation.ExecutionContext.HasEverUsedConstrainedLanguage)
{
System.Management.Automation.ExecutionContext executionContextFromTLS = LocalPipeline.GetExecutionContextFromTLS();
if (((executionContextFromTLS != null) && (executionContextFromTLS.LanguageMode == PSLanguageMode.ConstrainedLanguage)) && ((variable.Options & ScopedItemOptions.AllScope) == ScopedItemOptions.AllScope))
{
throw new PSNotSupportedException();
}
}
this._variables[variable.Name] = variable;
variable.SessionState = sessionState;
return(variable);
}
internal void SetOptions(ScopedItemOptions newOptions, bool force)
{
if (this.IsConstant || (!force && this.IsReadOnly))
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(this.name, SessionStateCategory.Variable, "VariableNotWritable", SessionStateStrings.VariableNotWritable);
throw exception;
}
if ((newOptions & ScopedItemOptions.Constant) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException exception2 = new SessionStateUnauthorizedAccessException(this.name, SessionStateCategory.Variable, "VariableCannotBeMadeConstant", SessionStateStrings.VariableCannotBeMadeConstant);
throw exception2;
}
if (this.IsAllScope && ((newOptions & ScopedItemOptions.AllScope) == ScopedItemOptions.None))
{
SessionStateUnauthorizedAccessException exception3 = new SessionStateUnauthorizedAccessException(this.name, SessionStateCategory.Variable, "VariableAllScopeOptionCannotBeRemoved", SessionStateStrings.VariableAllScopeOptionCannotBeRemoved);
throw exception3;
}
this.options = newOptions;
}
/// <summary>
/// Sets the options for the cmdlet and allows changes ReadOnly options only if force is specified.
/// </summary>
/// <param name="newOptions">
/// The new options value.
/// </param>
/// <param name="force">
/// If true the change to the options will happen even if the existing options are read-only.
/// </param>
internal void SetOptions(ScopedItemOptions newOptions, bool force)
{
// Check to see if the cmdlet is readonly, if so
// throw an exception because the options cannot be changed.
if ((_options & ScopedItemOptions.ReadOnly) != 0)
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
Name,
SessionStateCategory.Cmdlet,
"CmdletIsReadOnly",
SessionStateStrings.CmdletIsReadOnly);
throw e;
}
_options = newOptions;
}
/// <summary>
/// Sets the new definition for the alias.
/// </summary>
///
/// <param name="definition">
/// The new definition for the alias.
/// </param>
///
/// <param name="force">
/// If true, the value will be set even if the alias is ReadOnly.
/// </param>
///
/// <exception cref="SessionStateUnauthorizedAccessException">
/// If the alias is readonly or constant.
/// </exception>
///
internal void SetDefinition(string definition, bool force)
{
// Check to see if the variable is writable
if ((_options & ScopedItemOptions.Constant) != 0 ||
(!force && (_options & ScopedItemOptions.ReadOnly) != 0))
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
Name,
SessionStateCategory.Alias,
"AliasNotWritable",
SessionStateStrings.AliasNotWritable);
throw e;
}
_definition = definition;
} // SetDefinition
static SessionStateUnauthorizedAccessException CreateError(
PSVariable variable,
string message,
string errorId)
{
var ex = new SessionStateUnauthorizedAccessException(
message,
variable.Name,
SessionStateCategory.Variable);
var error = new ErrorRecord(
new ParentContainsErrorRecordException(ex),
errorId,
ErrorCategory.WriteError,
variable.Name);
ex.ErrorRecord = error;
ex.Source = typeof(PSVariable).Namespace;
return(ex);
}
static SessionStateUnauthorizedAccessException CreateError(
PSVariable variable,
string message,
string errorId)
{
var ex = new SessionStateUnauthorizedAccessException(
message,
variable.Name,
SessionStateCategory.Variable);
var error = new ErrorRecord(
new ParentContainsErrorRecordException(ex),
errorId,
ErrorCategory.WriteError,
variable.Name);
ex.ErrorRecord = error;
ex.Source = typeof(PSVariable).Namespace;
return ex;
}
internal void RemoveVariable(string name, bool force)
{
PSVariable variable = this.GetVariable(name);
if (variable.IsConstant || (variable.IsReadOnly && !force))
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Variable, "VariableNotRemovable", SessionStateStrings.VariableNotRemovable);
throw exception;
}
if (variable is SessionStateCapacityVariable)
{
SessionStateUnauthorizedAccessException exception2 = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Variable, "VariableNotRemovableSystem", SessionStateStrings.VariableNotRemovableSystem);
throw exception2;
}
if (variable is LocalVariable)
{
SessionStateUnauthorizedAccessException exception3 = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Variable, "VariableNotRemovableRare", SessionStateStrings.VariableNotRemovableRare);
throw exception3;
}
this._variables.Remove(name);
variable.WasRemoved = true;
}
internal void SetOptions(ScopedItemOptions newOptions, bool force)
{
if ((this.options & ScopedItemOptions.Constant) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(base.Name, SessionStateCategory.Alias, "AliasIsConstant", SessionStateStrings.AliasIsConstant);
throw exception;
}
if (!force && ((this.options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None))
{
SessionStateUnauthorizedAccessException exception2 = new SessionStateUnauthorizedAccessException(base.Name, SessionStateCategory.Alias, "AliasIsReadOnly", SessionStateStrings.AliasIsReadOnly);
throw exception2;
}
if ((newOptions & ScopedItemOptions.Constant) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException exception3 = new SessionStateUnauthorizedAccessException(base.Name, SessionStateCategory.Alias, "AliasCannotBeMadeConstant", SessionStateStrings.AliasCannotBeMadeConstant);
throw exception3;
}
if (((newOptions & ScopedItemOptions.AllScope) == ScopedItemOptions.None) && ((this.options & ScopedItemOptions.AllScope) != ScopedItemOptions.None))
{
SessionStateUnauthorizedAccessException exception4 = new SessionStateUnauthorizedAccessException(base.Name, SessionStateCategory.Alias, "AliasAllScopeOptionCannotBeRemoved", SessionStateStrings.AliasAllScopeOptionCannotBeRemoved);
throw exception4;
}
this.options = newOptions;
}
internal void SetOptions(ScopedItemOptions newOptions, bool force)
{
if ((this.options & ScopedItemOptions.Constant) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(base.Name, SessionStateCategory.Alias, "AliasIsConstant", SessionStateStrings.AliasIsConstant);
throw exception;
}
if (!force && ((this.options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None))
{
SessionStateUnauthorizedAccessException exception2 = new SessionStateUnauthorizedAccessException(base.Name, SessionStateCategory.Alias, "AliasIsReadOnly", SessionStateStrings.AliasIsReadOnly);
throw exception2;
}
if ((newOptions & ScopedItemOptions.Constant) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException exception3 = new SessionStateUnauthorizedAccessException(base.Name, SessionStateCategory.Alias, "AliasCannotBeMadeConstant", SessionStateStrings.AliasCannotBeMadeConstant);
throw exception3;
}
if (((newOptions & ScopedItemOptions.AllScope) == ScopedItemOptions.None) && ((this.options & ScopedItemOptions.AllScope) != ScopedItemOptions.None))
{
SessionStateUnauthorizedAccessException exception4 = new SessionStateUnauthorizedAccessException(base.Name, SessionStateCategory.Alias, "AliasAllScopeOptionCannotBeRemoved", SessionStateStrings.AliasAllScopeOptionCannotBeRemoved);
throw exception4;
}
this.options = newOptions;
}
internal void SetScriptBlock(ScriptBlock function, bool force)
{
if (function == null)
{
throw FunctionInfo.tracer.NewArgumentNullException(nameof(function));
}
if ((this.options & ScopedItemOptions.Constant) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException unauthorizedAccessException = new SessionStateUnauthorizedAccessException(this.Name, SessionStateCategory.Function, "FunctionIsConstant");
FunctionInfo.tracer.TraceException((Exception)unauthorizedAccessException);
throw unauthorizedAccessException;
}
if (!force && (this.options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException unauthorizedAccessException = new SessionStateUnauthorizedAccessException(this.Name, SessionStateCategory.Function, "FunctionIsReadOnly");
FunctionInfo.tracer.TraceException((Exception)unauthorizedAccessException);
throw unauthorizedAccessException;
}
this._function = function;
this.SetModule(function.Module);
this.commandMetadata = (CommandMetadata)null;
this.parameterSets = (ReadOnlyCollection <CommandParameterSetInfo>)null;
this._externalCommandMetadata = (CommandMetadata)null;
}
internal PSVariable SetVariable(string name, object value, bool asValue, bool force, SessionStateInternal sessionState, CommandOrigin origin = CommandOrigin.Internal, bool fastPath = false)
{
PSVariable variable;
PSVariable variable2 = value as PSVariable;
if (fastPath)
{
if (this.Parent != null)
{
throw new NotImplementedException("fastPath");
}
variable = new PSVariable(name, variable2.Value, variable2.Options, variable2.Attributes)
{
Description = variable2.Description
};
this.GetPrivateVariables()[name] = variable;
return(variable);
}
bool flag = this.TryGetVariable(name, origin, true, out variable);
if (!asValue && (variable2 != null))
{
if (flag)
{
if (((variable == null) || variable.IsConstant) || (!force && variable.IsReadOnly))
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Variable, "VariableNotWritable", SessionStateStrings.VariableNotWritable);
throw exception;
}
if ((variable is LocalVariable) && (variable2.Attributes.Any <Attribute>() || (variable2.Options != variable.Options)))
{
SessionStateUnauthorizedAccessException exception2 = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Variable, "VariableNotWritableRare", SessionStateStrings.VariableNotWritableRare);
throw exception2;
}
if (variable.IsReadOnly && force)
{
this._variables.Remove(name);
flag = false;
variable = new PSVariable(name, variable2.Value, variable2.Options, variable2.Attributes)
{
Description = variable2.Description
};
}
else
{
variable.Attributes.Clear();
variable.Value = variable2.Value;
variable.Options = variable2.Options;
variable.Description = variable2.Description;
foreach (Attribute attribute in variable2.Attributes)
{
variable.Attributes.Add(attribute);
}
}
}
else
{
variable = variable2;
}
}
else if (variable != null)
{
variable.Value = value;
}
else
{
variable = (this.LocalsTuple != null) ? (this.LocalsTuple.TrySetVariable(name, value)) ?? new PSVariable(name, value) : new PSVariable(name, value);
}
if (!flag && (this._variables.Count > (this.VariableCapacity.FastValue - 1)))
{
SessionStateOverflowException exception3 = new SessionStateOverflowException(name, SessionStateCategory.Variable, "VariableOverflow", SessionStateStrings.VariableOverflow, new object[] { this.VariableCapacity.FastValue });
throw exception3;
}
if (System.Management.Automation.ExecutionContext.HasEverUsedConstrainedLanguage)
{
System.Management.Automation.ExecutionContext executionContextFromTLS = LocalPipeline.GetExecutionContextFromTLS();
if (((executionContextFromTLS != null) && (executionContextFromTLS.LanguageMode == PSLanguageMode.ConstrainedLanguage)) && ((variable.Options & ScopedItemOptions.AllScope) == ScopedItemOptions.AllScope))
{
/* TODO: Review how to get around this: */ /* throw new PSNotSupportedException(); */
}
}
this._variables[name] = variable;
variable.SessionState = sessionState;
return(variable);
}
} // SetFunction
/// <summary>
/// Removes a function from the function table.
/// </summary>
///
/// <param name="name">
/// The name of the function to remove.
/// </param>
///
/// <param name="force">
/// If true, the function is removed even if it is ReadOnly.
/// </param>
///
/// <exception cref="SessionStateUnauthorizedAccessException">
/// If the function is constant.
/// </exception>
///
internal void RemoveFunction(string name, bool force)
{
Diagnostics.Assert(
name != null,
"The caller should verify the name");
var functionInfos = GetFunctions();
FunctionInfo function;
if (functionInfos.TryGetValue(name, out function))
{
if (IsFunctionOptionSet(function, ScopedItemOptions.Constant) ||
(!force && IsFunctionOptionSet(function, ScopedItemOptions.ReadOnly)))
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
name,
SessionStateCategory.Function,
"FunctionNotRemovable",
SessionStateStrings.FunctionNotRemovable);
throw e;
}
if (IsFunctionOptionSet(function, ScopedItemOptions.AllScope))
{
GetAllScopeFunctions().Remove(name);
}
}
functionInfos.Remove(name);
} // RemoveFunction
} // SetVariable
/// <summary>
/// Sets a variable to the given value.
/// </summary>
///
/// <param name="newVariable">
/// The new variable to create.
/// </param>
///
/// <param name="force">
/// If true, the variable will be set even if it is readonly.
/// </param>
///
/// <param name="sessionState">
/// Which SessionState this variable belongs to.
/// </param>
///
/// <returns>
/// The PSVariable representing the variable that was set.
/// </returns>
///
/// <exception cref="SessionStateUnauthorizedAccessException">
/// If the variable is read-only or constant.
/// </exception>
///
/// <exception cref="SessionStateOverflowException">
/// If the maximum number of variables has been reached for this scope.
/// </exception>
///
internal PSVariable NewVariable(PSVariable newVariable, bool force, SessionStateInternal sessionState)
{
PSVariable variable;
bool varExists = TryGetVariable(newVariable.Name, ScopeOrigin, true, out variable);
if (varExists)
{
// First check the variable to ensure that it
// is not constant or readonly
if (variable == null || variable.IsConstant || (!force && variable.IsReadOnly))
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
newVariable.Name,
SessionStateCategory.Variable,
"VariableNotWritable",
SessionStateStrings.VariableNotWritable);
throw e;
}
if (variable is LocalVariable)
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
newVariable.Name,
SessionStateCategory.Variable,
"VariableNotWritableRare",
SessionStateStrings.VariableNotWritableRare);
throw e;
}
// If the new and old variable are the same then don't bother
// doing the assignment and marking as "removed".
// This can happen when a module variable is imported twice.
if (!ReferenceEquals(newVariable, variable))
{
// Mark the old variable as removed...
variable.WasRemoved = true;
variable = newVariable;
}
}
else
{
// Since the variable doesn't exist, use the new Variable
// object
variable = newVariable;
}
// Now check to make sure we don't exceed the max variable count
// if this is a new variable.
if (!varExists && _variables.Count > VariableCapacity.FastValue - 1)
{
SessionStateOverflowException e =
new SessionStateOverflowException(
newVariable.Name,
SessionStateCategory.Variable,
"VariableOverflow",
SessionStateStrings.VariableOverflow,
VariableCapacity.FastValue);
throw e;
}
// Don't let people set AllScope variables in ConstrainedLanguage,
// as they can be used to interfere with the session state of
// trusted commands.
if (ExecutionContext.HasEverUsedConstrainedLanguage)
{
var context = System.Management.Automation.Runspaces.LocalPipeline.GetExecutionContextFromTLS();
if ((context != null) &&
(context.LanguageMode == PSLanguageMode.ConstrainedLanguage) &&
((variable.Options & ScopedItemOptions.AllScope) == ScopedItemOptions.AllScope))
{
throw new PSNotSupportedException();
}
}
_variables[variable.Name] = variable;
variable.SessionState = sessionState;
return variable;
} // NewVariable
internal void RemoveFunction(string name, bool force)
{
if (this.GetFunctions().ContainsKey(name))
{
FunctionInfo function = this.GetFunctions()[name];
if (IsFunctionOptionSet(function, ScopedItemOptions.Constant) || (!force && IsFunctionOptionSet(function, ScopedItemOptions.ReadOnly)))
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Function, "FunctionNotRemovable", SessionStateStrings.FunctionNotRemovable);
throw exception;
}
if (IsFunctionOptionSet(function, ScopedItemOptions.AllScope))
{
this.GetAllScopeFunctions().Remove(name);
}
}
this.GetFunctions().Remove(name);
}
/// <summary>
/// Updates a function.
/// </summary>
///
/// <param name="newFunction">
/// The script block that the function should represent.
/// </param>
///
/// <param name="force">
/// If true, the script block will be applied even if the filter is ReadOnly.
/// </param>
///
/// <param name="options">
/// Any options to set on the new function, null if none.
/// </param>
///
/// <param name="helpFile">
/// The helpfile for this function.
/// </param>
///
/// <exception cref="ArgumentNullException">
/// If <paramref name="newFunction"/> is null.
/// </exception>
///
internal void Update(ScriptBlock newFunction, bool force, ScopedItemOptions options, string helpFile)
{
if (newFunction == null)
{
throw PSTraceSource.NewArgumentNullException("function");
}
if ((_options & ScopedItemOptions.Constant) != 0)
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
Name,
SessionStateCategory.Function,
"FunctionIsConstant",
SessionStateStrings.FunctionIsConstant);
throw e;
}
if (!force && (_options & ScopedItemOptions.ReadOnly) != 0)
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
Name,
SessionStateCategory.Function,
"FunctionIsReadOnly",
SessionStateStrings.FunctionIsReadOnly);
throw e;
}
_scriptBlock = newFunction;
this.Module = newFunction.Module;
_commandMetadata = null;
this._parameterSets = null;
this.ExternalCommandMetadata = null;
if (options != ScopedItemOptions.Unspecified)
{
this.Options = options;
}
_helpFile = helpFile;
}
} // NewScope
/// <summary>
/// Removes the current scope from the scope tree and
/// changes the current scope to the parent scope.
/// </summary>
/// <param name="scope">
/// The scope to cleanup and remove.
/// </param>
/// <exception cref="SessionStateUnauthorizedAccessException">
/// The global scope cannot be removed.
/// </exception>
internal void RemoveScope(SessionStateScope scope)
{
Diagnostics.Assert(
_currentScope != null,
"The currentScope should always be set.");
if (scope == GlobalScope)
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
StringLiterals.Global,
SessionStateCategory.Scope,
"GlobalScopeCannotRemove",
SessionStateStrings.GlobalScopeCannotRemove);
throw e;
}
// Give the provider a chance to cleanup the drive data associated
// with drives in this scope
foreach (PSDriveInfo drive in scope.Drives)
{
if (drive == null)
{
continue;
}
CmdletProviderContext context = new CmdletProviderContext(this.ExecutionContext);
// Call CanRemoveDrive to give the provider a chance to cleanup
// but ignore the return value and exceptions
try
{
CanRemoveDrive(drive, context);
}
catch (LoopFlowException)
{
throw;
}
catch (PipelineStoppedException)
{
throw;
}
catch (ActionPreferenceStopException)
{
throw;
}
catch (Exception) // Catch-all OK, 3rd party callout.
{
// Ignore all exceptions from the provider as we are
// going to force the removal anyway
}
} // foreach drive
scope.RemoveAllDrives();
// If the scope being removed is the current scope,
// then it must be removed from the tree.
if (scope == _currentScope && _currentScope.Parent != null)
{
_currentScope = _currentScope.Parent;
}
scope.Parent = null;
} // RemoveScope
} // GetValueOfItem
/// <summary>
/// Determines if the item can be renamed. Derived classes that need
/// to perform a check should override this method.
/// </summary>
///
/// <param name="item">
/// The item to verify if it can be renamed.
/// </param>
///
/// <returns>
/// true if the item can be renamed or false otherwise.
/// </returns>
///
internal override bool CanRenameItem(object item)
{
bool result = false;
PSVariable variable = item as PSVariable;
if (variable != null)
{
if ((variable.Options & ScopedItemOptions.Constant) != 0 ||
((variable.Options & ScopedItemOptions.ReadOnly) != 0 && !Force))
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
variable.Name,
SessionStateCategory.Variable,
"CannotRenameVariable",
SessionStateStrings.CannotRenameVariable);
throw e;
}
result = true;
}
return result;
}
internal void Update(System.Management.Automation.ScriptBlock newFunction, bool force, ScopedItemOptions options, string helpFile)
{
if (newFunction == null)
{
throw PSTraceSource.NewArgumentNullException("function");
}
if ((this._options & ScopedItemOptions.Constant) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(base.Name, SessionStateCategory.Function, "FunctionIsConstant", SessionStateStrings.FunctionIsConstant);
throw exception;
}
if (!force && ((this._options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None))
{
SessionStateUnauthorizedAccessException exception2 = new SessionStateUnauthorizedAccessException(base.Name, SessionStateCategory.Function, "FunctionIsReadOnly", SessionStateStrings.FunctionIsReadOnly);
throw exception2;
}
this._scriptBlock = newFunction;
base.SetModule(newFunction.Module);
this._commandMetadata = null;
base._parameterSets = null;
base._externalCommandMetadata = null;
if (options != ScopedItemOptions.Unspecified)
{
this.Options = options;
}
this._helpFile = helpFile;
}
internal AliasInfo SetAliasItem(AliasInfo aliasToSet, bool force, CommandOrigin origin = CommandOrigin.Internal)
{
if (!this.GetAliases().ContainsKey(aliasToSet.Name))
{
if (this.GetAliases().Count > (this.AliasCapacity.FastValue - 1))
{
SessionStateOverflowException exception = new SessionStateOverflowException(aliasToSet.Name, SessionStateCategory.Alias, "AliasOverflow", SessionStateStrings.AliasOverflow, new object[] { this.AliasCapacity.FastValue });
throw exception;
}
this.GetAliases()[aliasToSet.Name] = aliasToSet;
}
else
{
AliasInfo valueToCheck = this.GetAliases()[aliasToSet.Name];
SessionState.ThrowIfNotVisible(origin, valueToCheck);
if (((valueToCheck.Options & ScopedItemOptions.Constant) != ScopedItemOptions.None) || (((valueToCheck.Options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None) && !force))
{
SessionStateUnauthorizedAccessException exception2 = new SessionStateUnauthorizedAccessException(aliasToSet.Name, SessionStateCategory.Alias, "AliasNotWritable", SessionStateStrings.AliasNotWritable);
throw exception2;
}
if (((aliasToSet.Options & ScopedItemOptions.AllScope) == ScopedItemOptions.None) && ((valueToCheck.Options & ScopedItemOptions.AllScope) != ScopedItemOptions.None))
{
SessionStateUnauthorizedAccessException exception3 = new SessionStateUnauthorizedAccessException(aliasToSet.Name, SessionStateCategory.Alias, "AliasAllScopeOptionCannotBeRemoved", SessionStateStrings.AliasAllScopeOptionCannotBeRemoved);
throw exception3;
}
this.RemoveAliasFromCache(valueToCheck.Name, valueToCheck.Definition);
this.GetAliases()[aliasToSet.Name] = aliasToSet;
}
this.AddAliasToCache(aliasToSet.Name, aliasToSet.Definition);
return this.GetAliases()[aliasToSet.Name];
}
internal void RemoveAlias(string name, bool force)
{
if (this.GetAliases().ContainsKey(name))
{
AliasInfo info = this.GetAliases()[name];
if (((info.Options & ScopedItemOptions.Constant) != ScopedItemOptions.None) || (!force && ((info.Options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None)))
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Alias, "AliasNotRemovable", SessionStateStrings.AliasNotRemovable);
throw exception;
}
this.RemoveAliasFromCache(info.Name, info.Definition);
}
this.GetAliases().Remove(name);
}
internal FunctionInfo SetFunction(string name, ScriptBlock function, FunctionInfo originalFunction, ScopedItemOptions options, bool force, CommandOrigin origin, System.Management.Automation.ExecutionContext context, string helpFile, Func<string, ScriptBlock, FunctionInfo, ScopedItemOptions, System.Management.Automation.ExecutionContext, string, FunctionInfo> functionFactory)
{
if (!this.GetFunctions().ContainsKey(name))
{
if (this.GetFunctions().Count > (this.FunctionCapacity.FastValue - 1))
{
SessionStateOverflowException exception = new SessionStateOverflowException(name, SessionStateCategory.Function, "FunctionOverflow", SessionStateStrings.FunctionOverflow, new object[] { this.FunctionCapacity.FastValue });
throw exception;
}
FunctionInfo info = functionFactory(name, function, originalFunction, options, context, helpFile);
this.GetFunctions()[name] = info;
if (IsFunctionOptionSet(info, ScopedItemOptions.AllScope))
{
this.GetAllScopeFunctions()[name] = info;
}
}
else
{
FunctionInfo valueToCheck = this.GetFunctions()[name];
SessionState.ThrowIfNotVisible(origin, valueToCheck);
if (IsFunctionOptionSet(valueToCheck, ScopedItemOptions.Constant) || (!force && IsFunctionOptionSet(valueToCheck, ScopedItemOptions.ReadOnly)))
{
SessionStateUnauthorizedAccessException exception2 = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Function, "FunctionNotWritable", SessionStateStrings.FunctionNotWritable);
throw exception2;
}
if ((options & ScopedItemOptions.Constant) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException exception3 = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Function, "FunctionCannotBeMadeConstant", SessionStateStrings.FunctionCannotBeMadeConstant);
throw exception3;
}
if (((options & ScopedItemOptions.AllScope) == ScopedItemOptions.None) && IsFunctionOptionSet(valueToCheck, ScopedItemOptions.AllScope))
{
SessionStateUnauthorizedAccessException exception4 = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Function, "FunctionAllScopeOptionCannotBeRemoved", SessionStateStrings.FunctionAllScopeOptionCannotBeRemoved);
throw exception4;
}
FunctionInfo info3 = valueToCheck;
FunctionInfo newFunction = null;
if (info3 != null)
{
newFunction = functionFactory(name, function, originalFunction, options, context, helpFile);
if (!info3.GetType().Equals(newFunction.GetType()) || (((info3.Options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None) && force))
{
this.GetFunctions()[name] = newFunction;
}
else
{
bool flag2 = force || ((options & ScopedItemOptions.ReadOnly) == ScopedItemOptions.None);
info3.Update(newFunction, flag2, options, helpFile);
}
}
}
return this.GetFunctions()[name];
}
internal void RemoveVariable(string name, bool force)
{
PSVariable variable = this.GetVariable(name);
if (variable.IsConstant || (variable.IsReadOnly && !force))
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Variable, "VariableNotRemovable", SessionStateStrings.VariableNotRemovable);
throw exception;
}
if (variable is SessionStateCapacityVariable)
{
SessionStateUnauthorizedAccessException exception2 = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Variable, "VariableNotRemovableSystem", SessionStateStrings.VariableNotRemovableSystem);
throw exception2;
}
if (variable is LocalVariable)
{
SessionStateUnauthorizedAccessException exception3 = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Variable, "VariableNotRemovableRare", SessionStateStrings.VariableNotRemovableRare);
throw exception3;
}
this._variables.Remove(name);
variable.WasRemoved = true;
}
internal void SetOptions(ScopedItemOptions newOptions, bool force)
{
if ((this.options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(base.Name, SessionStateCategory.Cmdlet, "CmdletIsReadOnly", SessionStateStrings.CmdletIsReadOnly);
throw exception;
}
this.options = newOptions;
}
internal AliasInfo SetAliasValue(string name, string value, ScopedItemOptions options, System.Management.Automation.ExecutionContext context, bool force, CommandOrigin origin)
{
if (!this.GetAliases().ContainsKey(name))
{
if (this.GetAliases().Count > (this.AliasCapacity.FastValue - 1))
{
SessionStateOverflowException exception = new SessionStateOverflowException(name, SessionStateCategory.Alias, "AliasOverflow", SessionStateStrings.AliasOverflow, new object[] { this.AliasCapacity.FastValue });
throw exception;
}
AliasInfo info = new AliasInfo(name, value, context, options);
this.GetAliases()[name] = info;
}
else
{
AliasInfo valueToCheck = this.GetAliases()[name];
if (((valueToCheck.Options & ScopedItemOptions.Constant) != ScopedItemOptions.None) || (!force && ((valueToCheck.Options & ScopedItemOptions.ReadOnly) != ScopedItemOptions.None)))
{
SessionStateUnauthorizedAccessException exception2 = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Alias, "AliasNotWritable", SessionStateStrings.AliasNotWritable);
throw exception2;
}
if ((options & ScopedItemOptions.Constant) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException exception3 = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Alias, "AliasCannotBeMadeConstant", SessionStateStrings.AliasCannotBeMadeConstant);
throw exception3;
}
if (((options & ScopedItemOptions.AllScope) == ScopedItemOptions.None) && ((valueToCheck.Options & ScopedItemOptions.AllScope) != ScopedItemOptions.None))
{
SessionStateUnauthorizedAccessException exception4 = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Alias, "AliasAllScopeOptionCannotBeRemoved", SessionStateStrings.AliasAllScopeOptionCannotBeRemoved);
throw exception4;
}
SessionState.ThrowIfNotVisible(origin, valueToCheck);
this.RemoveAliasFromCache(valueToCheck.Name, valueToCheck.Definition);
if (force)
{
this.GetAliases().Remove(name);
valueToCheck = new AliasInfo(name, value, context, options);
this.GetAliases()[name] = valueToCheck;
}
else
{
valueToCheck.Options = options;
valueToCheck.SetDefinition(value, false);
}
}
this.AddAliasToCache(name, value);
return this.GetAliases()[name];
}
internal static object SetVariableValue(VariablePath variablePath, object value, ExecutionContext executionContext, AttributeBaseAst[] attributeAsts)
{
SessionStateInternal sessionState = executionContext.EngineSessionState;
CommandOrigin origin = sessionState.CurrentScope.ScopeOrigin;
if (!variablePath.IsVariable)
{
sessionState.SetVariable(variablePath, value, true, origin);
return(value);
}
// Variable assignment is traced only if trace level 2 is specified.
if (executionContext.PSDebugTraceLevel > 1)
{
executionContext.Debugger.TraceVariableSet(variablePath.UnqualifiedPath, value);
}
if (variablePath.IsUnscopedVariable)
{
variablePath = variablePath.CloneAndSetLocal();
}
SessionStateScope scope;
PSVariable var = sessionState.GetVariableItem(variablePath, out scope, origin);
if (var == null)
{
var attributes = attributeAsts == null
? new Collection <Attribute>()
: GetAttributeCollection(attributeAsts);
var = new PSVariable(variablePath.UnqualifiedPath, value, ScopedItemOptions.None, attributes);
sessionState.SetVariable(variablePath, var, false, origin);
if (executionContext._debuggingMode > 0)
{
executionContext.Debugger.CheckVariableWrite(variablePath.UnqualifiedPath);
}
}
else if (attributeAsts != null)
{
// Use bytewise operation directly instead of 'var.IsReadOnly || var.IsConstant' on
// a hot path (setting variable with type constraint) to get better performance.
if ((var.Options & (ScopedItemOptions.ReadOnly | ScopedItemOptions.Constant)) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
var.Name,
SessionStateCategory.Variable,
"VariableNotWritable",
SessionStateStrings.VariableNotWritable);
throw e;
}
var attributes = GetAttributeCollection(attributeAsts);
value = PSVariable.TransformValue(attributes, value);
if (!PSVariable.IsValidValue(attributes, value))
{
ValidationMetadataException e = new ValidationMetadataException(
"ValidateSetFailure",
null,
Metadata.InvalidValueFailure,
var.Name,
((value != null) ? value.ToString() : "$null"));
throw e;
}
var.SetValueRaw(value, true);
// Don't update the PSVariable's attributes until we successfully set the value
var.Attributes.Clear();
var.AddParameterAttributesNoChecks(attributes);
if (executionContext._debuggingMode > 0)
{
executionContext.Debugger.CheckVariableWrite(variablePath.UnqualifiedPath);
}
}
else
{
// The setter will handle checking for variable writes.
var.Value = value;
}
return(value);
}
internal PSVariable SetVariable(string name, object value, bool asValue, bool force, SessionStateInternal sessionState, CommandOrigin origin = CommandOrigin.Internal, bool fastPath = false)
{
PSVariable variable;
PSVariable variable2 = value as PSVariable;
if (fastPath)
{
if (this.Parent != null)
{
throw new NotImplementedException("fastPath");
}
variable = new PSVariable(name, variable2.Value, variable2.Options, variable2.Attributes) {
Description = variable2.Description
};
this.GetPrivateVariables()[name] = variable;
return variable;
}
bool flag = this.TryGetVariable(name, origin, true, out variable);
if (!asValue && (variable2 != null))
{
if (flag)
{
if (((variable == null) || variable.IsConstant) || (!force && variable.IsReadOnly))
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Variable, "VariableNotWritable", SessionStateStrings.VariableNotWritable);
throw exception;
}
if ((variable is LocalVariable) && (variable2.Attributes.Any<Attribute>() || (variable2.Options != variable.Options)))
{
SessionStateUnauthorizedAccessException exception2 = new SessionStateUnauthorizedAccessException(name, SessionStateCategory.Variable, "VariableNotWritableRare", SessionStateStrings.VariableNotWritableRare);
throw exception2;
}
if (variable.IsReadOnly && force)
{
this._variables.Remove(name);
flag = false;
variable = new PSVariable(name, variable2.Value, variable2.Options, variable2.Attributes) {
Description = variable2.Description
};
}
else
{
variable.Attributes.Clear();
variable.Value = variable2.Value;
variable.Options = variable2.Options;
variable.Description = variable2.Description;
foreach (Attribute attribute in variable2.Attributes)
{
variable.Attributes.Add(attribute);
}
}
}
else
{
variable = variable2;
}
}
else if (variable != null)
{
variable.Value = value;
}
else
{
variable = (this.LocalsTuple != null) ? (this.LocalsTuple.TrySetVariable(name, value)) ?? new PSVariable(name, value) : new PSVariable(name, value);
}
if (!flag && (this._variables.Count > (this.VariableCapacity.FastValue - 1)))
{
SessionStateOverflowException exception3 = new SessionStateOverflowException(name, SessionStateCategory.Variable, "VariableOverflow", SessionStateStrings.VariableOverflow, new object[] { this.VariableCapacity.FastValue });
throw exception3;
}
if (System.Management.Automation.ExecutionContext.HasEverUsedConstrainedLanguage)
{
System.Management.Automation.ExecutionContext executionContextFromTLS = LocalPipeline.GetExecutionContextFromTLS();
if (((executionContextFromTLS != null) && (executionContextFromTLS.LanguageMode == PSLanguageMode.ConstrainedLanguage)) && ((variable.Options & ScopedItemOptions.AllScope) == ScopedItemOptions.AllScope))
{
/* TODO: Review how to get around this: */ /* throw new PSNotSupportedException(); */
}
}
this._variables[name] = variable;
variable.SessionState = sessionState;
return variable;
}
internal void SetOptions(ScopedItemOptions newOptions, bool force)
{
// Check to see if the variable is constant or readonly, if so
// throw an exception because the options cannot be changed.
if (IsConstant || (!force && IsReadOnly))
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
Name,
SessionStateCategory.Variable,
"VariableNotWritable",
SessionStateStrings.VariableNotWritable);
throw e;
}
// Now check to see if the caller is trying to set
// the options to constant. This is only allowed at
// variable creation
if ((newOptions & ScopedItemOptions.Constant) != 0)
{
// user is trying to set the variable to constant after
// creating the variable. Do not allow this (as per spec).
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
Name,
SessionStateCategory.Variable,
"VariableCannotBeMadeConstant",
SessionStateStrings.VariableCannotBeMadeConstant);
throw e;
}
// Now check to see if the caller is trying to
// remove the AllScope option. This is not allowed
// at any time.
if (IsAllScope && ((newOptions & ScopedItemOptions.AllScope) == 0))
{
// user is trying to remove the AllScope option from the variable.
// Do not allow this (as per spec).
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
Name,
SessionStateCategory.Variable,
"VariableAllScopeOptionCannotBeRemoved",
SessionStateStrings.VariableAllScopeOptionCannotBeRemoved);
throw e;
}
_options = newOptions;
}
internal void SetOptions(ScopedItemOptions newOptions, bool force)
{
if (this.IsConstant || (!force && this.IsReadOnly))
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(this.name, SessionStateCategory.Variable, "VariableNotWritable", SessionStateStrings.VariableNotWritable);
throw exception;
}
if ((newOptions & ScopedItemOptions.Constant) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException exception2 = new SessionStateUnauthorizedAccessException(this.name, SessionStateCategory.Variable, "VariableCannotBeMadeConstant", SessionStateStrings.VariableCannotBeMadeConstant);
throw exception2;
}
if (this.IsAllScope && ((newOptions & ScopedItemOptions.AllScope) == ScopedItemOptions.None))
{
SessionStateUnauthorizedAccessException exception3 = new SessionStateUnauthorizedAccessException(this.name, SessionStateCategory.Variable, "VariableAllScopeOptionCannotBeRemoved", SessionStateStrings.VariableAllScopeOptionCannotBeRemoved);
throw exception3;
}
this.options = newOptions;
}
/// <summary>
/// Verifies the constraints and attributes before setting the value
/// </summary>
///
/// <param name="value">
/// The value to be set.
/// </param>
///
/// <exception cref="SessionStateUnauthorizedAccessException">
/// If the variable is read-only or constant.
/// </exception>
///
/// <exception cref="ValidationMetadataException">
/// If the validation metadata throws an exception or the value doesn't
/// pass the validation metadata.
/// </exception>
///
private void SetValue(object value)
{
// Check to see if the variable is writable
if ((_options & (ScopedItemOptions.ReadOnly | ScopedItemOptions.Constant)) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
Name,
SessionStateCategory.Variable,
"VariableNotWritable",
SessionStateStrings.VariableNotWritable);
throw e;
}
// Now perform all ArgumentTransformations that are needed
object transformedValue = value;
if (_attributes != null && _attributes.Count > 0)
{
transformedValue = TransformValue(_attributes, value);
// Next check to make sure the value is valid
if (!IsValidValue(transformedValue))
{
ValidationMetadataException e = new ValidationMetadataException(
"ValidateSetFailure",
null,
Metadata.InvalidValueFailure,
Name,
((transformedValue != null) ? transformedValue.ToString() : "$null"));
throw e;
}
}
if (transformedValue != null)
{
transformedValue = CopyMutableValues(transformedValue);
}
// Set the value before triggering any write breakpoints
_value = transformedValue;
DebuggerCheckVariableWrite();
}
} // NewScope
/// <summary>
/// Removes the current scope from the scope tree and
/// changes the current scope to the parent scope.
/// </summary>
///
/// <param name="scope">
/// The scope to cleanup and remove.
/// </param>
///
/// <exception cref="SessionStateUnauthorizedAccessException">
/// The global scope cannot be removed.
/// </exception>
///
internal void RemoveScope(SessionStateScope scope)
{
Diagnostics.Assert(
_currentScope != null,
"The currentScope should always be set.");
if (scope == GlobalScope)
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
StringLiterals.Global,
SessionStateCategory.Scope,
"GlobalScopeCannotRemove",
SessionStateStrings.GlobalScopeCannotRemove);
throw e;
}
// Give the provider a chance to cleanup the drive data associated
// with drives in this scope
foreach (PSDriveInfo drive in scope.Drives)
{
if (drive == null)
{
continue;
}
CmdletProviderContext context = new CmdletProviderContext(this.ExecutionContext);
// Call CanRemoveDrive to give the provider a chance to cleanup
// but ignore the return value and exceptions
try
{
CanRemoveDrive(drive, context);
}
catch (LoopFlowException)
{
throw;
}
catch (PipelineStoppedException)
{
throw;
}
catch (ActionPreferenceStopException)
{
throw;
}
catch (Exception e) // Catch-all OK, 3rd party callout.
{
CommandProcessorBase.CheckForSevereException(e);
// Ignore all exceptions from the provider as we are
// going to force the removal anyway
}
} // foreach drive
scope.RemoveAllDrives();
// If the scope being removed is the current scope,
// then it must be removed from the tree.
if (scope == _currentScope && _currentScope.Parent != null)
{
_currentScope = _currentScope.Parent;
}
scope.Parent = null;
} // RemoveScope
} // GetAlias
/// <summary>
/// Sets an alias to the given value.
/// </summary>
///
/// <param name="name">
/// The name of the alias to set.
/// </param>
///
/// <param name="value">
/// The value for the alias
/// </param>
///
/// <param name="context">
/// The execution context for this engine instance.
/// </param>
///
/// <param name="force">
/// If true, the value will be set even if the alias is ReadOnly.
/// </param>
///
/// <param name="origin">
/// Origin of the caller of this API
/// </param>
///
/// <returns>
/// The string representing the value that was set.
/// </returns>
///
/// <exception cref="SessionStateUnauthorizedAccessException">
/// if the alias is read-only or constant.
/// </exception>
///
/// <exception cref="SessionStateOverflowException">
/// If the maximum number of aliases has been reached for this scope.
/// </exception>
///
internal AliasInfo SetAliasValue(string name, string value, ExecutionContext context, bool force, CommandOrigin origin)
{
Diagnostics.Assert(
name != null,
"The caller should verify the name");
var aliasInfos = GetAliases();
AliasInfo aliasInfo;
if (!aliasInfos.TryGetValue(name, out aliasInfo))
{
if (aliasInfos.Count > AliasCapacity.FastValue - 1)
{
SessionStateOverflowException e =
new SessionStateOverflowException(
name,
SessionStateCategory.Alias,
"AliasOverflow",
SessionStateStrings.AliasOverflow,
AliasCapacity.FastValue);
throw e;
}
aliasInfos[name] = new AliasInfo(name, value, context);
}
else
{
// Make sure the alias isn't constant or readonly
if ((aliasInfo.Options & ScopedItemOptions.Constant) != 0 ||
(!force && (aliasInfo.Options & ScopedItemOptions.ReadOnly) != 0))
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
name,
SessionStateCategory.Alias,
"AliasNotWritable",
SessionStateStrings.AliasNotWritable);
throw e;
}
SessionState.ThrowIfNotVisible(origin, aliasInfo);
RemoveAliasFromCache(aliasInfo.Name, aliasInfo.Definition);
if (force)
{
aliasInfos.Remove(name);
aliasInfo = new AliasInfo(name, value, context);
aliasInfos[name] = aliasInfo;
}
else
{
aliasInfo.SetDefinition(value, false);
}
}
AddAliasToCache(name, value);
return aliasInfos[name];
} // SetAliasValue
/// <summary>
/// Sets a variable to the given value.
/// </summary>
///
/// <param name="name">
/// The name of the variable to set.
/// </param>
///
/// <param name="value">
/// The value for the variable
/// </param>
///
/// <param name="asValue">
/// If true, sets the variable value to newValue. If false, newValue must
/// be a PSVariable object and the item will be set rather than the value.
/// </param>
///
/// <param name="force">
/// If true, the variable will be set even if it is readonly.
/// </param>
///
/// <param name="sessionState">
/// Which SessionState this variable belongs to.
/// </param>
///
/// <param name="origin">
/// The origin of the caller
/// </param>
///
/// <param name="fastPath">
/// If true and the variable is being set in the global scope,
/// then all of the normal variable lookup stuff is bypassed and
/// the variable is added directly to the dictionary.
/// </param>
/// <returns>
/// The PSVariable representing the variable that was set.
/// </returns>
///
/// <exception cref="SessionStateUnauthorizedAccessException">
/// If the variable is read-only or constant.
/// </exception>
///
/// <exception cref="SessionStateOverflowException">
/// If the maximum number of variables has been reached for this scope.
/// </exception>
///
internal PSVariable SetVariable(string name, object value, bool asValue, bool force, SessionStateInternal sessionState, CommandOrigin origin = CommandOrigin.Internal, bool fastPath = false)
{
Diagnostics.Assert(name != null, "The caller should verify the name");
PSVariable variable;
PSVariable variableToSet = value as PSVariable;
// Set the variable directly in the table, bypassing all of the checks. This
// can only be used for global scope otherwise the slow path is used.
if (fastPath)
{
if (Parent != null)
{
throw new NotImplementedException("fastPath");
}
variable = new PSVariable(name, variableToSet.Value, variableToSet.Options, variableToSet.Attributes) { Description = variableToSet.Description };
GetPrivateVariables()[name] = variable;
return variable;
}
bool varExists = TryGetVariable(name, origin, true, out variable);
// Initialize the private variable dictionary if it's not yet
if (_variables == null) { GetPrivateVariables(); }
if (!asValue && variableToSet != null)
{
if (varExists)
{
// First check the variable to ensure that it
// is not constant or readonly
if (variable == null || variable.IsConstant || (!force && variable.IsReadOnly))
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
name,
SessionStateCategory.Variable,
"VariableNotWritable",
SessionStateStrings.VariableNotWritable);
throw e;
}
if (variable is LocalVariable
&& (variableToSet.Attributes.Any() || variableToSet.Options != variable.Options))
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
name,
SessionStateCategory.Variable,
"VariableNotWritableRare",
SessionStateStrings.VariableNotWritableRare);
throw e;
}
if (variable.IsReadOnly && force)
{
_variables.Remove(name);
varExists = false;
variable = new PSVariable(name, variableToSet.Value, variableToSet.Options, variableToSet.Attributes) { Description = variableToSet.Description };
}
else
{
// Since the variable already exists, copy
// the value, options, description, and attributes
// to it.
variable.Attributes.Clear();
variable.Value = variableToSet.Value;
variable.Options = variableToSet.Options;
variable.Description = variableToSet.Description;
foreach (Attribute attr in variableToSet.Attributes)
{
variable.Attributes.Add(attr);
}
}
}
else
{
// Since the variable doesn't exist, use the new Variable
// object
variable = variableToSet;
}
}
else if (variable != null)
{
variable.Value = value;
}
else
{
variable = (LocalsTuple != null ? LocalsTuple.TrySetVariable(name, value) : null) ?? new PSVariable(name, value);
}
// Now check to make sure we don't exceed the max variable count
// if this is a new variable.
if (!varExists && _variables.Count > VariableCapacity.FastValue - 1)
{
SessionStateOverflowException e =
new SessionStateOverflowException(
name,
SessionStateCategory.Variable,
"VariableOverflow",
SessionStateStrings.VariableOverflow,
VariableCapacity.FastValue);
throw e;
}
// Don't let people set AllScope variables in ConstrainedLanguage,
// as they can be used to interfere with the session state of
// trusted commands.
if (ExecutionContext.HasEverUsedConstrainedLanguage)
{
var context = System.Management.Automation.Runspaces.LocalPipeline.GetExecutionContextFromTLS();
if ((context != null) &&
(context.LanguageMode == PSLanguageMode.ConstrainedLanguage) &&
((variable.Options & ScopedItemOptions.AllScope) == ScopedItemOptions.AllScope))
{
throw new PSNotSupportedException();
}
}
_variables[name] = variable;
variable.SessionState = sessionState;
return variable;
} // SetVariable
private void SetValue(object value)
{
if ((this.options & (ScopedItemOptions.Constant | ScopedItemOptions.ReadOnly)) != ScopedItemOptions.None)
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(this.name, SessionStateCategory.Variable, "VariableNotWritable", SessionStateStrings.VariableNotWritable);
throw exception;
}
object obj2 = value;
if ((this.attributes != null) && (this.attributes.Count > 0))
{
obj2 = TransformValue(this.attributes, value);
if (!this.IsValidValue(obj2))
{
ValidationMetadataException exception2 = new ValidationMetadataException("ValidateSetFailure", null, Metadata.InvalidValueFailure, new object[] { this.name, (obj2 != null) ? obj2.ToString() : "" });
throw exception2;
}
}
if (obj2 != null)
{
obj2 = CopyMutableValues(obj2);
}
this._value = obj2;
this.DebuggerCheckVariableWrite();
}
/// <summary>
/// Sets an function to the given function declaration.
/// </summary>
///
/// <param name="name">
/// The name of the function to set.
/// </param>
///
/// <param name="function">
/// The script block that the function should represent.
/// </param>
///
/// <param name="originalFunction">
/// The original function (if any) from which the scriptblock was derived.
/// </param>
///
/// <param name="options">
/// The options that should be applied to the function.
/// </param>
///
/// <param name="force">
/// If true, the function will be set even if its ReadOnly.
/// </param>
///
/// <param name="origin">
/// The origin of the caller of this API
/// </param>
///
/// <param name="context">
/// The execution context for the function/filter.
/// </param>
///
/// <param name="helpFile">
/// The name of the help file associated with the function.
/// </param>
///
/// <param name="functionFactory">
/// Function to create the FunctionInfo.
/// </param>
///
/// <returns>
/// A FunctionInfo that is either a FilterInfo or FunctionInfo representing the
/// function or filter.
/// </returns>
///
/// <exception cref="SessionStateUnauthorizedAccessException">
/// If the function is read-only or constant.
/// </exception>
///
/// <exception cref="SessionStateOverflowException">
/// If the maximum number of functions have been reached for this scope.
/// </exception>
///
internal FunctionInfo SetFunction(
string name,
ScriptBlock function,
FunctionInfo originalFunction,
ScopedItemOptions options,
bool force,
CommandOrigin origin,
ExecutionContext context,
string helpFile,
Func<string, ScriptBlock, FunctionInfo, ScopedItemOptions, ExecutionContext, string, FunctionInfo> functionFactory)
{
Diagnostics.Assert(
name != null,
"The caller should verify the name");
var functionInfos = GetFunctions();
FunctionInfo existingValue;
FunctionInfo result;
if (!functionInfos.TryGetValue(name, out existingValue))
{
if (functionInfos.Count > FunctionCapacity.FastValue - 1)
{
SessionStateOverflowException e =
new SessionStateOverflowException(
name,
SessionStateCategory.Function,
"FunctionOverflow",
SessionStateStrings.FunctionOverflow,
FunctionCapacity.FastValue);
throw e;
}
result = functionFactory(name, function, originalFunction, options, context, helpFile);
functionInfos[name] = result;
if (IsFunctionOptionSet(result, ScopedItemOptions.AllScope))
{
GetAllScopeFunctions()[name] = result;
}
}
else
{
// Make sure the function isn't constant or readonly
SessionState.ThrowIfNotVisible(origin, existingValue);
if (IsFunctionOptionSet(existingValue, ScopedItemOptions.Constant) ||
(!force && IsFunctionOptionSet(existingValue, ScopedItemOptions.ReadOnly)))
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
name,
SessionStateCategory.Function,
"FunctionNotWritable",
SessionStateStrings.FunctionNotWritable);
throw e;
}
// Ensure we are not trying to set the function to constant as this can only be
// done at creation time.
if ((options & ScopedItemOptions.Constant) != 0)
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
name,
SessionStateCategory.Function,
"FunctionCannotBeMadeConstant",
SessionStateStrings.FunctionCannotBeMadeConstant);
throw e;
}
// Ensure we are not trying to remove the AllScope option
if ((options & ScopedItemOptions.AllScope) == 0 &&
IsFunctionOptionSet(existingValue, ScopedItemOptions.AllScope))
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
name,
SessionStateCategory.Function,
"FunctionAllScopeOptionCannotBeRemoved",
SessionStateStrings.FunctionAllScopeOptionCannotBeRemoved);
throw e;
}
FunctionInfo existingFunction = existingValue;
FunctionInfo newValue = null;
// If the function type changes (i.e.: function to workflow or back)
// then we need to blast what was there
newValue = functionFactory(name, function, originalFunction, options, context, helpFile);
bool changesFunctionType = existingFunction.GetType() != newValue.GetType();
// Since the options are set after the script block, we have to
// forcefully apply the script block if the options will be
// set to not being ReadOnly
if (changesFunctionType ||
((existingFunction.Options & ScopedItemOptions.ReadOnly) != 0 && force))
{
result = newValue;
functionInfos[name] = newValue;
}
else
{
bool applyForce = force || (options & ScopedItemOptions.ReadOnly) == 0;
existingFunction.Update(newValue, applyForce, options, helpFile);
result = existingFunction;
}
}
return result;
} // SetFunction
internal PSVariable NewVariable(PSVariable newVariable, bool force, SessionStateInternal sessionState)
{
PSVariable variable;
bool flag = this.TryGetVariable(newVariable.Name, this.ScopeOrigin, true, out variable);
if (flag)
{
if (((variable == null) || variable.IsConstant) || (!force && variable.IsReadOnly))
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException(newVariable.Name, SessionStateCategory.Variable, "VariableNotWritable", SessionStateStrings.VariableNotWritable);
throw exception;
}
if (variable is LocalVariable)
{
SessionStateUnauthorizedAccessException exception2 = new SessionStateUnauthorizedAccessException(newVariable.Name, SessionStateCategory.Variable, "VariableNotWritableRare", SessionStateStrings.VariableNotWritableRare);
throw exception2;
}
if (!object.ReferenceEquals(newVariable, variable))
{
variable.WasRemoved = true;
variable = newVariable;
}
}
else
{
variable = newVariable;
}
if (!flag && (this._variables.Count > (this.VariableCapacity.FastValue - 1)))
{
SessionStateOverflowException exception3 = new SessionStateOverflowException(newVariable.Name, SessionStateCategory.Variable, "VariableOverflow", SessionStateStrings.VariableOverflow, new object[] { this.VariableCapacity.FastValue });
throw exception3;
}
if (System.Management.Automation.ExecutionContext.HasEverUsedConstrainedLanguage)
{
System.Management.Automation.ExecutionContext executionContextFromTLS = LocalPipeline.GetExecutionContextFromTLS();
if (((executionContextFromTLS != null) && (executionContextFromTLS.LanguageMode == PSLanguageMode.ConstrainedLanguage)) && ((variable.Options & ScopedItemOptions.AllScope) == ScopedItemOptions.AllScope))
{
throw new PSNotSupportedException();
}
}
this._variables[variable.Name] = variable;
variable.SessionState = sessionState;
return variable;
}
} // NewVariable
/// <summary>
/// Removes a variable from the variable table.
/// </summary>
///
/// <param name="name">
/// The name of the variable to remove.
/// </param>
///
/// <param name="force">
/// If true, the variable will be removed even if its ReadOnly.
/// </param>
///
/// <exception cref="SessionStateUnauthorizedAccessException">
/// if the variable is constant.
/// </exception>
///
internal void RemoveVariable(string name, bool force)
{
Diagnostics.Assert(
name != null,
"The caller should verify the name");
PSVariable variable = GetVariable(name);
if (variable.IsConstant || (variable.IsReadOnly && !force))
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
name,
SessionStateCategory.Variable,
"VariableNotRemovable",
SessionStateStrings.VariableNotRemovable);
throw e;
}
if (variable is SessionStateCapacityVariable)
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
name,
SessionStateCategory.Variable,
"VariableNotRemovableSystem",
SessionStateStrings.VariableNotRemovableSystem);
throw e;
}
if (variable is LocalVariable)
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
name,
SessionStateCategory.Variable,
"VariableNotRemovableRare",
SessionStateStrings.VariableNotRemovableRare);
throw e;
}
_variables.Remove(name);
// Finally mark the variable itself has having been removed so
// anyone holding a reference to it can be aware of this.
variable.WasRemoved = true;
} // RemoveVariable
} // GetSessionStateTable
/// <summary>
/// Determines if the item can be renamed. Derived classes that need
/// to perform a check should override this method.
/// </summary>
///
/// <param name="item">
/// The item to verify if it can be renamed.
/// </param>
///
/// <returns>
/// true if the item can be renamed or false otherwise.
/// </returns>
///
internal override bool CanRenameItem(object item)
{
bool result = false;
FunctionInfo functionInfo = item as FunctionInfo;
if (functionInfo != null)
{
if ((functionInfo.Options & ScopedItemOptions.Constant) != 0 ||
((functionInfo.Options & ScopedItemOptions.ReadOnly) != 0 && !Force))
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
functionInfo.Name,
SessionStateCategory.Function,
"CannotRenameFunction",
SessionStateStrings.CannotRenameFunction);
throw e;
}
result = true;
}
return result;
}
/// <summary>
/// Sets the options for the alias and allows changes ReadOnly options only if force is specified.
/// </summary>
///
/// <param name="newOptions">
/// The new options value.
/// </param>
///
/// <param name="force">
/// If true the change to the options will happen even if the existing options are read-only.
/// </param>
///
internal void SetOptions(ScopedItemOptions newOptions, bool force)
{
// Check to see if the variable is constant, if so
// throw an exception because the options cannot be changed.
if ((_options & ScopedItemOptions.Constant) != 0)
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
Name,
SessionStateCategory.Alias,
"AliasIsConstant",
SessionStateStrings.AliasIsConstant);
throw e;
}
// Check to see if the variable is readonly, if so
// throw an exception because the options cannot be changed.
if (!force && (_options & ScopedItemOptions.ReadOnly) != 0)
{
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
Name,
SessionStateCategory.Alias,
"AliasIsReadOnly",
SessionStateStrings.AliasIsReadOnly);
throw e;
}
// Now check to see if the caller is trying to set
// the options to constant. This is only allowed at
// variable creation
if ((newOptions & ScopedItemOptions.Constant) != 0)
{
// user is trying to set the variable to constant after
// creating the variable. Do not allow this (as per spec).
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
Name,
SessionStateCategory.Alias,
"AliasCannotBeMadeConstant",
SessionStateStrings.AliasCannotBeMadeConstant);
throw e;
}
if ((newOptions & ScopedItemOptions.AllScope) == 0 &&
(_options & ScopedItemOptions.AllScope) != 0)
{
// user is trying to remove the AllScope option from the alias.
// Do not allow this (as per spec).
SessionStateUnauthorizedAccessException e =
new SessionStateUnauthorizedAccessException(
this.Name,
SessionStateCategory.Alias,
"AliasAllScopeOptionCannotBeRemoved",
SessionStateStrings.AliasAllScopeOptionCannotBeRemoved);
throw e;
}
_options = newOptions;
}
internal void RemoveScope(SessionStateScope scope)
{
if (scope == this._globalScope)
{
SessionStateUnauthorizedAccessException exception = new SessionStateUnauthorizedAccessException("GLOBAL", SessionStateCategory.Scope, "GlobalScopeCannotRemove", SessionStateStrings.GlobalScopeCannotRemove);
throw exception;
}
foreach (PSDriveInfo info in scope.Drives)
{
if (info != null)
{
CmdletProviderContext context = new CmdletProviderContext(this.ExecutionContext);
try
{
this.CanRemoveDrive(info, context);
}
catch (LoopFlowException)
{
throw;
}
catch (PipelineStoppedException)
{
throw;
}
catch (ActionPreferenceStopException)
{
throw;
}
catch (Exception exception2)
{
CommandProcessorBase.CheckForSevereException(exception2);
}
}
}
scope.RemoveAllDrives();
if ((scope == this.currentScope) && (this.currentScope.Parent != null))
{
this.currentScope = this.currentScope.Parent;
}
scope.Parent = null;
}
