public override void Load()
{
NameValueCollection requestValueCollection = Page.RequestValueCollection;
if (requestValueCollection == null)
{
return;
}
string viewStateString = null;
try {
viewStateString = Page.RequestViewStateString;
// VSWhidbey 160556
if (!String.IsNullOrEmpty(viewStateString) || !String.IsNullOrEmpty(Page.ViewStateUserKey))
{
Pair combinedState = (Pair)Util.DeserializeWithAssert(StateFormatter2, viewStateString, Purpose.WebForms_HiddenFieldPageStatePersister_ClientState);
ViewState = combinedState.First;
ControlState = combinedState.Second;
}
}
catch (Exception e) {
// throw if this is a wrapped ViewStateException -- mac validation failed
if (e.InnerException is ViewStateException)
{
throw;
}
ViewStateException.ThrowViewStateError(e, viewStateString);
}
}
public override void Load()
{
if (base.Page.RequestValueCollection != null)
{
string requestViewStateString = null;
try
{
requestViewStateString = base.Page.RequestViewStateString;
if (!string.IsNullOrEmpty(requestViewStateString) || !string.IsNullOrEmpty(base.Page.ViewStateUserKey))
{
Pair pair = (Pair)Util.DeserializeWithAssert(base.StateFormatter, requestViewStateString);
base.ViewState = pair.First;
base.ControlState = pair.Second;
}
}
catch (Exception exception)
{
if (exception.InnerException is ViewStateException)
{
throw;
}
ViewStateException.ThrowViewStateError(exception, requestViewStateString);
}
}
}
private static string GetCorrectErrorPageMessage(ViewStateException vse, string message)
{
if (!vse.IsConnected)
{
return System.Web.SR.GetString("ViewState_ClientDisconnected");
}
return System.Web.SR.GetString(message);
}
private static string GetCorrectErrorPageMessage(ViewStateException vse, string message)
{
if (!vse.IsConnected)
{
return(System.Web.SR.GetString("ViewState_ClientDisconnected"));
}
return(System.Web.SR.GetString(message));
}
/// <devdoc>
/// <para>Deserializes a LOS formatted object from a string.</para>
/// </devdoc>
public object Deserialize(string input)
{
#if NO_BASE64
char[] data = input.ToCharArray();
#else
byte[] dataBytes = Convert.FromBase64String(input);
int dataLength = -1;
if (EnableViewStateMac)
{
try {
dataBytes = MachineKeySection.GetDecodedData(dataBytes, _macKey, 0, dataBytes.Length, ref dataLength);
}
catch (Exception e) {
PerfCounters.IncrementCounter(AppPerfCounter.VIEWSTATE_MAC_FAIL);
ViewStateException.ThrowMacValidationError(e, input);
}
}
if (dataLength == -1)
{
dataLength = dataBytes.Length;
}
char[] data = EncodingInstance.GetChars(dataBytes, 0, dataLength);
#endif
// clear or allocate name and type tables.
//
if (_deserializedTypeTable == null)
{
_deserializedTypeTable = new ArrayList();
_deserializedConverterTable = new ListDictionary();
}
else
{
_deserializedTypeTable.Clear();
_deserializedConverterTable.Clear();
}
_builder = (char[])_charBufferAllocator.GetBuffer();
_recyclable = true;
// DeserializeValueInternal is recursive, so we just kick this off
// starting at 0
_current = 0;
_deserializationData = data;
object ret = DeserializeValueInternal();
if (_recyclable)
{
_charBufferAllocator.ReuseBuffer(_builder);
}
return(ret);
}
private static void ThrowError(Exception inner, string persistedState, string errorPageMessage, bool macValidationError)
{
ViewStateException innerException = new ViewStateException(inner, persistedState)
{
_macValidationError = macValidationError
};
HttpException e = new HttpException(GetCorrectErrorPageMessage(innerException, errorPageMessage), innerException);
e.SetFormatter(new UseLastUnhandledErrorFormatter(e));
throw e;
}
// if the client disconnected, we want to display that at the top of the error page
private static string GetCorrectErrorPageMessage(ViewStateException vse, string message)
{
if (!vse.IsConnected)
{
return(SR.GetString(SR.ViewState_ClientDisconnected));
}
else
{
return(SR.GetString(message));
}
}
// Returns true if this exception was caused by a view state MAC validation failure; false otherwise
internal static bool IsMacValidationException(Exception e)
{
for (; e != null; e = e.InnerException)
{
ViewStateException vse = e as ViewStateException;
if (vse != null && vse._macValidationError)
{
return(true);
}
}
// not a ViewState MAC validation exception
return(false);
}
private static void ThrowError(Exception inner, string persistedState, string errorPageMessage,
bool macValidationError)
{
ViewStateException middle;
HttpException outer;
middle = new ViewStateException(inner, persistedState);
middle._macValidationError = macValidationError;
// Setup the formatter for this exception, to make sure this message shows up
// in an error page as opposed to the inner-most exception's message.
outer = new HttpException(GetCorrectErrorPageMessage(middle, errorPageMessage), middle);
outer.SetFormatter(new UseLastUnhandledErrorFormatter(outer));
throw outer;
}
private void EnsureEventValidationFieldLoaded()
{
if (!this._eventValidationFieldLoaded)
{
this._eventValidationFieldLoaded = true;
string str = null;
if (this._owner.RequestValueCollection != null)
{
str = this._owner.RequestValueCollection["__EVENTVALIDATION"];
}
if (!string.IsNullOrEmpty(str))
{
IStateFormatter formatter = this._owner.CreateStateFormatter();
ArrayList list = null;
try
{
list = formatter.Deserialize(str) as ArrayList;
}
catch (Exception exception)
{
ViewStateException.ThrowViewStateError(exception, str);
}
if ((list != null) && (list.Count >= 1))
{
int num = (int)list[0];
string requestViewStateString = this._owner.RequestViewStateString;
if (num != StringUtil.GetStringHashCode(requestViewStateString))
{
ViewStateException.ThrowViewStateError(null, str);
}
this._clientPostBackValidatedEventTable = new HybridDictionary(list.Count - 1, true);
for (int i = 1; i < list.Count; i++)
{
int num3 = (int)list[i];
this._clientPostBackValidatedEventTable[num3] = null;
}
if (this._owner.IsCallback)
{
this._validEventReferences = list;
}
}
}
}
}
public object Deserialize(string inputString)
{
if (string.IsNullOrEmpty(inputString))
{
throw new ArgumentNullException("inputString");
}
byte[] buf = Convert.FromBase64String(inputString);
int length = buf.Length;
try
{
if ((this._page != null) && this._page.ContainsEncryptedViewState)
{
buf = MachineKeySection.EncryptOrDecryptData(false, buf, this.GetMacKeyModifier(), 0, length);
length = buf.Length;
}
else if (((this._page != null) && this._page.EnableViewStateMac) || (this._macKeyBytes != null))
{
buf = MachineKeySection.GetDecodedData(buf, this.GetMacKeyModifier(), 0, length, ref length);
}
}
catch
{
PerfCounters.IncrementCounter(AppPerfCounter.VIEWSTATE_MAC_FAIL);
ViewStateException.ThrowMacValidationError(null, inputString);
}
object obj2 = null;
MemoryStream memoryStream = GetMemoryStream();
try
{
memoryStream.Write(buf, 0, length);
memoryStream.Position = 0L;
obj2 = this.Deserialize(memoryStream);
}
finally
{
ReleaseMemoryStream(memoryStream);
}
return(obj2);
}
// if the client disconnected, we want to display that at the top of the error page
private static string GetCorrectErrorPageMessage(ViewStateException vse, string message) {
if (!vse.IsConnected)
return SR.GetString(SR.ViewState_ClientDisconnected);
else
return SR.GetString(message);
}
internal protected WebViewStateFailureAuditEvent(string message, object eventSource, int eventCode, int eventDetailCode, ViewStateException viewStateException)
:base(message, eventSource, eventCode, eventDetailCode)
{
_viewStateException = viewStateException;
}
protected internal WebViewStateFailureAuditEvent(string message, object eventSource, int eventCode, int eventDetailCode, System.Web.UI.ViewStateException viewStateException) : base(message, eventSource, eventCode, eventDetailCode)
{
this._viewStateException = viewStateException;
}
protected internal WebViewStateFailureAuditEvent(string message, object eventSource, int eventCode, int eventDetailCode, System.Web.UI.ViewStateException viewStateException) : base(message, eventSource, eventCode, eventDetailCode)
{
this._viewStateException = viewStateException;
}
private static void ThrowError(Exception inner, string persistedState, string errorPageMessage, bool macValidationError)
{
ViewStateException innerException = new ViewStateException(inner, persistedState) {
_macValidationError = macValidationError
};
HttpException e = new HttpException(GetCorrectErrorPageMessage(innerException, errorPageMessage), innerException);
e.SetFormatter(new UseLastUnhandledErrorFormatter(e));
throw e;
}
private static void ThrowError(Exception inner, string persistedState, string errorPageMessage,
bool macValidationError) {
ViewStateException middle;
HttpException outer;
middle = new ViewStateException(inner, persistedState);
middle._macValidationError = macValidationError;
// Setup the formatter for this exception, to make sure this message shows up
// in an error page as opposed to the inner-most exception's message.
outer = new HttpException(GetCorrectErrorPageMessage(middle, errorPageMessage), middle);
outer.SetFormatter(new UseLastUnhandledErrorFormatter(outer));
throw outer;
}
private void AddViewStateExceptionDataFields(ArrayList dataFields, ViewStateException vse)
{
dataFields.Add(System.Web.SR.GetString(vse.ShortMessage));
dataFields.Add(vse.RemoteAddress);
dataFields.Add(vse.RemotePort);
dataFields.Add(vse.UserAgent);
dataFields.Add(vse.PersistedState);
dataFields.Add(vse.Referer);
dataFields.Add(vse.Path);
}
