private unsafe void CreateFirstSubstData(string s, IIS7WorkerRequest iis7WorkerRequest, System.Text.Encoder encoder)
{
IntPtr ptr;
int num = 0;
int length = s.Length;
if (length > 0)
{
fixed (char* str = ((char*) s))
{
char* chars = str;
int size = encoder.GetByteCount(chars, length, true);
ptr = iis7WorkerRequest.AllocateRequestMemory(size);
if (ptr != IntPtr.Zero)
{
num = encoder.GetBytes(chars, length, (byte*) ptr, size, true);
}
}
}
else
{
ptr = iis7WorkerRequest.AllocateRequestMemory(1);
}
if (ptr == IntPtr.Zero)
{
throw new OutOfMemoryException();
}
this._firstSubstData = ptr;
this._firstSubstDataSize = num;
}
// This copy constructor is used by the granular request validation feature. Since these collections are immutable
// once created, it's ok for us to have two collections containing the same data.
internal HttpHeaderCollection(HttpHeaderCollection col)
: base(col) {
_request = col._request;
_response = col._response;
_iis7WorkerRequest = col._iis7WorkerRequest;
}
public void RequestEnteredAspNetPipeline(IIS7WorkerRequest wr, Guid childActivityId) {
if (!IsEnabled()) {
return;
}
Guid parentActivityId = wr.RequestTraceIdentifier;
RequestEnteredAspNetPipelineImpl(parentActivityId, childActivityId);
}
// This constructor creates the header collection for response headers.
// Try to preallocate the base collection with a size that should be sufficient
// to store the headers for most requests.
internal HttpHeaderCollection(HttpWorkerRequest wr, HttpResponse response, int capacity) : base(capacity) {
// if this is an IIS7WorkerRequest, then the collection will be writeable and we will
// call into IIS7 to update the header blocks when changes are made.
_iis7WorkerRequest = wr as IIS7WorkerRequest;
_response = response;
}
// We preallocate the base collection with a size that should be sufficient
// to store all server variables w/o having to expand
internal HttpServerVarsCollection(HttpWorkerRequest wr, HttpRequest request) : base(59) {
// if this is an IIS7WorkerRequest, then the collection will be writeable and we will
// call into IIS7 to update the server var block when changes are made.
_iis7workerRequest = wr as IIS7WorkerRequest;
_request = request;
_populated = false;
Debug.Assert( _request != null );
}
internal HttpSubstBlockResponseElement(HttpResponseSubstitutionCallback callback, Encoding encoding, System.Text.Encoder encoder, IIS7WorkerRequest iis7WorkerRequest)
{
this._callback = callback;
if (iis7WorkerRequest != null)
{
this._isIIS7WorkerRequest = true;
string s = this._callback(HttpContext.Current);
if (s == null)
{
throw new ArgumentNullException("substitutionString");
}
this.CreateFirstSubstData(s, iis7WorkerRequest, encoder);
}
else
{
this._firstSubstitution = this.Substitute(encoding);
}
}
private static void InitializeRequestContext(IntPtr nativeRequestContext, int flags, out IIS7WorkerRequest wr, out HttpContext context) {
wr = null;
context = null;
try {
bool etwEnabled = ((flags & HttpContext.FLAG_ETW_PROVIDER_ENABLED) == HttpContext.FLAG_ETW_PROVIDER_ENABLED);
// this may throw, e.g. if the request Content-Length header has a value greater than Int32.MaxValue
wr = IIS7WorkerRequest.CreateWorkerRequest(nativeRequestContext, etwEnabled);
// this may throw, e.g. see WOS 1724573: ASP.Net v2.0: wrong error code returned when ? is used in the URL
context = new HttpContext(wr, false);
}
catch {
// treat as "400 Bad Request" since that's the only reason the HttpContext.ctor should throw
IIS.MgdSetBadRequestStatus(nativeRequestContext);
}
}
internal ArrayList GetIntegratedSnapshot(out bool hasSubstBlocks, IIS7WorkerRequest wr)
{
ArrayList list = null;
ArrayList snapshot = this.GetSnapshot(out hasSubstBlocks);
ArrayList list3 = wr.GetBufferedResponseChunks(true, this._substElements, ref hasSubstBlocks);
if (list3 != null)
{
for (int i = 0; i < snapshot.Count; i++)
{
list3.Add(snapshot[i]);
}
list = list3;
}
else
{
list = snapshot;
}
if ((this._substElements != null) && (this._substElements.Count > 0))
{
int num2 = 0;
for (int j = 0; j < list.Count; j++)
{
if (list[j] is HttpSubstBlockResponseElement)
{
num2++;
if (num2 == this._substElements.Count)
{
break;
}
}
}
if (num2 != this._substElements.Count)
{
throw new InvalidOperationException(System.Web.SR.GetString("Substitution_blocks_cannot_be_modified"));
}
this._response.Context.Request.SetDynamicCompression(true);
}
return list;
}
internal static IIS7WorkerRequest CreateWorkerRequest(IntPtr requestContext, bool etwProviderEnabled)
{
IIS7WorkerRequest request = new IIS7WorkerRequest(requestContext, etwProviderEnabled);
if (request != null)
{
request.Initialize();
}
return request;
}
// Disposes of the worker request associated with this request.
public void ReleaseWorkerRequest() {
Debug.Trace("RootedObjects", "ReleaseWorkerRequest");
if (WorkerRequest != null) {
WorkerRequest.Dispose();
}
WorkerRequest = null;
}
private void ClearNativeResponse(bool clearEntity, bool clearHeaders, IIS7WorkerRequest wr)
{
wr.ClearResponse(clearEntity, clearHeaders);
if (clearEntity)
{
this._httpWriter.ClearSubstitutionBlocks();
}
}
private RequestNotificationStatus ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context)
{
RequestNotificationStatus status = RequestNotificationStatus.Pending;
try
{
int currentModuleIndex;
bool isPostNotification;
int currentNotification;
UnsafeIISMethods.MgdGetCurrentNotificationInfo(wr.RequestContext, out currentModuleIndex, out isPostNotification, out currentNotification);
context.CurrentModuleIndex = currentModuleIndex;
context.IsPostNotification = isPostNotification;
context.CurrentNotification = (RequestNotification) currentNotification;
IHttpHandler httpHandler = (IHttpHandler) null;
if (context.NeedToInitializeApp())
{
try
{
this.EnsureFirstRequestInit(context);
}
catch
{
if (!context.Request.IsDebuggingRequest)
throw;
}
context.Response.InitResponseWriter();
httpHandler = HttpApplicationFactory.GetApplicationInstance(context);
if (httpHandler == null)
throw new HttpException(System.Web.SR.GetString("Unable_create_app_object"));
if (EtwTrace.IsTraceEnabled(5, 1))
EtwTrace.Trace(EtwTraceType.ETW_TYPE_START_HANDLER, context.WorkerRequest, httpHandler.GetType().FullName, "Start");
HttpApplication httpApplication = httpHandler as HttpApplication;
if (httpApplication != null)
httpApplication.AssignContext(context);
}
wr.SynchronizeVariables(context);
if (context.ApplicationInstance != null)
{
if (context.ApplicationInstance.BeginProcessRequestNotification(context, this._requestNotificationCompletionCallback).CompletedSynchronously)
status = RequestNotificationStatus.Continue;
}
else if (httpHandler != null)
{
httpHandler.ProcessRequest(context);
status = RequestNotificationStatus.FinishRequest;
}
else
status = RequestNotificationStatus.Continue;
}
catch (Exception ex)
{
status = RequestNotificationStatus.FinishRequest;
context.Response.InitResponseWriter();
context.AddError(ex);
}
if (status != RequestNotificationStatus.Pending)
this.FinishRequestNotification(wr, context, ref status);
return status;
}
internal static RequestNotificationStatus ProcessRequestNotification(IIS7WorkerRequest wr, HttpContext context)
{
return HttpRuntime._theRuntime.ProcessRequestNotificationPrivate(wr, context);
}
private void FinishRequestNotification(IIS7WorkerRequest wr, HttpContext context, ref RequestNotificationStatus status)
{
HttpApplication applicationInstance = context.ApplicationInstance;
if (context.NotificationContext.RequestCompleted)
status = RequestNotificationStatus.FinishRequest;
context.ReportRuntimeErrorIfExists(ref status);
if (status == RequestNotificationStatus.FinishRequest && (context.CurrentNotification == RequestNotification.LogRequest || context.CurrentNotification == RequestNotification.EndRequest))
status = RequestNotificationStatus.Continue;
IntPtr requestContext = wr.RequestContext;
bool sendHeaders = UnsafeIISMethods.MgdIsLastNotification(requestContext, status);
try
{
context.Response.UpdateNativeResponse(sendHeaders);
}
catch (Exception ex)
{
wr.UnlockCachedResponseBytes();
context.AddError(ex);
context.ReportRuntimeErrorIfExists(ref status);
context.Response.UpdateNativeResponse(sendHeaders);
}
if (sendHeaders)
context.FinishPipelineRequest();
if (status == RequestNotificationStatus.Pending)
return;
PipelineRuntime.DisposeHandler(context, requestContext, status);
}
// in integrated mode, snapshots need to pull the chunks from the IIS
// buffers since they may have already been pushed through
// Therefore, we can't rely solely on what's in the HttpWriter
// at the moment
internal ArrayList GetIntegratedSnapshot(out bool hasSubstBlocks, IIS7WorkerRequest wr) {
ArrayList buffers = null;
// first, get what's in our buffers
ArrayList writerBuffers = GetSnapshot(out hasSubstBlocks);
// now, get what's in the IIS buffers
ArrayList nativeBuffers = wr.GetBufferedResponseChunks(true, _substElements, ref hasSubstBlocks);
// try to append the current buffers to what we just
// got from the native buffer
if (null != nativeBuffers) {
for (int i = 0; i < writerBuffers.Count; i++) {
nativeBuffers.Add(writerBuffers[i]);
}
buffers = nativeBuffers;
}
else {
buffers = writerBuffers;
}
// if we have substitution blocks:
// 1) throw exception if someone modified the subst blocks
// 2) re-enable compression
if (_substElements != null && _substElements.Count > 0) {
int substCount = 0;
// scan buffers for subst blocks
for(int i = 0; i < buffers.Count; i++) {
if (buffers[i] is HttpSubstBlockResponseElement) {
substCount++;
if (substCount == _substElements.Count) {
break;
}
}
}
if (substCount != _substElements.Count) {
throw new InvalidOperationException(SR.GetString(SR.Substitution_blocks_cannot_be_modified));
}
// re-enable dynamic compression when we have a snapshot of the subst blocks.
_response.Context.Request.SetDynamicCompression(true /*enable*/);
}
return buffers;
}
// WOS 1926509: ASP.NET: WriteSubstitution in integrated mode needs to support callbacks that return String.Empty
private unsafe void CreateFirstSubstData(String s, IIS7WorkerRequest iis7WorkerRequest, Encoder encoder) {
Debug.Assert(s != null, "s != null");
IntPtr pbBuffer;
int numBytes = 0;
int cch = s.Length;
if (cch > 0) {
fixed (char * pch = s) {
int cbBuffer = encoder.GetByteCount(pch, cch, true /*flush*/);
pbBuffer = iis7WorkerRequest.AllocateRequestMemory(cbBuffer);
if (pbBuffer != IntPtr.Zero) {
numBytes = encoder.GetBytes(pch, cch, (byte*)pbBuffer, cbBuffer, true /*flush*/);
}
}
}
else {
// deal with empty string
pbBuffer = iis7WorkerRequest.AllocateRequestMemory(1);
}
if (pbBuffer == IntPtr.Zero) {
throw new OutOfMemoryException();
}
_firstSubstData = pbBuffer;
_firstSubstDataSize = numBytes;
}
internal HttpHeaderCollection(HttpWorkerRequest wr, HttpResponse response, int capacity) : base(capacity)
{
this._iis7WorkerRequest = wr as IIS7WorkerRequest;
this._response = response;
}
internal void FilterIntegrated(bool finalFiltering, IIS7WorkerRequest wr)
{
if (this._installedFilter != null)
{
if (this._charBufferLength != this._charBufferFree)
{
this.FlushCharBuffer(true);
}
this._lastBuffer = null;
ArrayList list = this._buffers;
this._buffers = new ArrayList();
ArrayList list2 = null;
bool hasSubstBlocks = false;
list2 = wr.GetBufferedResponseChunks(false, null, ref hasSubstBlocks);
this._filterSink.Filtering = true;
try
{
if (list2 != null)
{
for (int i = 0; i < list2.Count; i++)
{
IHttpResponseElement element = (IHttpResponseElement) list2[i];
long size = element.GetSize();
if (size > 0L)
{
this._installedFilter.Write(element.GetBytes(), 0, Convert.ToInt32(size));
}
}
wr.ClearResponse(true, false);
}
if (list != null)
{
for (int j = 0; j < list.Count; j++)
{
IHttpResponseElement element2 = (IHttpResponseElement) list[j];
long num4 = element2.GetSize();
if (num4 > 0L)
{
this._installedFilter.Write(element2.GetBytes(), 0, Convert.ToInt32(num4));
}
}
}
this._installedFilter.Flush();
}
finally
{
try
{
if (finalFiltering)
{
this._installedFilter.Close();
}
}
finally
{
this._filterSink.Filtering = false;
}
}
}
}
internal static IIS7WorkerRequest CreateWorkerRequest(IntPtr requestContext, bool etwProviderEnabled) {
IIS7WorkerRequest req = new IIS7WorkerRequest(requestContext, etwProviderEnabled);
if ( null != req ) {
Debug.Trace("ClientUrl", " *********** NEW REQUEST ****************");
req.Initialize();
}
return req;
}
internal HttpServerVarsCollection(HttpWorkerRequest wr, HttpRequest request) : base(0x3b)
{
this._iis7workerRequest = wr as IIS7WorkerRequest;
this._request = request;
this._populated = false;
}
internal IIS7UserPrincipal(IIS7WorkerRequest wr, IIdentity identity)
{
this._wr = wr;
this._identity = identity;
}
//
// Support for substitution blocks
//
internal void WriteSubstBlock(HttpResponseSubstitutionCallback callback, IIS7WorkerRequest iis7WorkerRequest) {
if (_charBufferLength != _charBufferFree)
FlushCharBuffer(true);
_lastBuffer = null;
// add new substitution block to the buffer list
IHttpResponseElement element = new HttpSubstBlockResponseElement(callback, Encoding, Encoder, iis7WorkerRequest);
_buffers.Add(element);
if (iis7WorkerRequest != null) {
SubstElements.Add(element);
}
if (!_responseBufferingOn)
_response.Flush();
}
internal void WriteSubstBlock(HttpResponseSubstitutionCallback callback, IIS7WorkerRequest iis7WorkerRequest)
{
if (this._charBufferLength != this._charBufferFree)
{
this.FlushCharBuffer(true);
}
this._lastBuffer = null;
IHttpResponseElement element = new HttpSubstBlockResponseElement(callback, this.Encoding, this.Encoder, iis7WorkerRequest);
this._buffers.Add(element);
if (iis7WorkerRequest != null)
{
this.SubstElements.Add(element);
}
if (!this._responseBufferingOn)
{
this._response.Flush();
}
}
internal void FilterIntegrated(bool finalFiltering, IIS7WorkerRequest wr) {
// no filter?
if (_installedFilter == null)
return;
// flush char buffer and remember old buffers
if (_charBufferLength != _charBufferFree)
FlushCharBuffer(true);
_lastBuffer = null;
// ISAPI mode bails if it has no buffers
// to filter, in integrated mode we need
// to check the unified response buffers
// maintained by IIS for content, as well
// remember current buffers (if any) that might be
// response entity from this transition
// (not yet pushed through to IIS response buffers)
ArrayList oldBuffers = _buffers;
_buffers = new ArrayList();
// now, get what's in the IIS buffers
ArrayList nativeBuffers = null;
bool fDummy = false;
nativeBuffers = wr.GetBufferedResponseChunks(false, null, ref fDummy);
Debug.Assert(_filterSink != null);
_filterSink.Filtering = true;
try {
// push buffers through installed filters
// push the IIS ones through first since we need to maintain order
if (null != nativeBuffers) {
for (int i = 0; i < nativeBuffers.Count; i++) {
IHttpResponseElement buf = (IHttpResponseElement)nativeBuffers[i];
long len = buf.GetSize();
if (len > 0)
_installedFilter.Write(buf.GetBytes(), 0, Convert.ToInt32(len));
}
// if we had stuff there, we now need to clear it since we may have
// transformed it
wr.ClearResponse(true /* entity */, false /* headers */);
}
// current buffers, if any
if (null != oldBuffers) {
for (int i = 0; i < oldBuffers.Count; i++) {
IHttpResponseElement buf = (IHttpResponseElement)oldBuffers[i];
long len = buf.GetSize();
if (len > 0)
_installedFilter.Write(buf.GetBytes(), 0, Convert.ToInt32(len));
}
}
_installedFilter.Flush();
}
finally {
try {
if (finalFiltering)
_installedFilter.Close();
}
finally {
_filterSink.Filtering = false;
}
}
}
public unsafe void RequestStarted(IIS7WorkerRequest wr) {
if (!IsEnabled()) {
return;
}
RequestStartedImpl(wr);
}
private static void InitializeRequestContext(IntPtr nativeRequestContext, int flags, out IIS7WorkerRequest wr, out HttpContext context)
{
wr = null;
context = null;
try
{
bool etwProviderEnabled = (flags & 0x40) == 0x40;
wr = IIS7WorkerRequest.CreateWorkerRequest(nativeRequestContext, etwProviderEnabled);
context = new HttpContext(wr, false);
}
catch
{
UnsafeIISMethods.MgdSetBadRequestStatus(nativeRequestContext);
}
}
[NonEvent] // use the private member signature for deducing ETW parameters
private unsafe void RequestStartedImpl(IIS7WorkerRequest wr) {
string httpVerb = wr.GetHttpVerbName();
HTTP_COOKED_URL* pCookedUrl = wr.GetCookedUrl();
Guid iisEtwActivityId = wr.RequestTraceIdentifier;
Guid requestCorrelationId = wr.GetRequestCorrelationId();
fixed (char* pHttpVerb = httpVerb) {
// !! WARNING !!
// This logic must be kept in sync with the ETW-deduced parameters in RequestStarted,
// otherwise type safety violations could occur.
const int EVENTDATA_COUNT = 3;
EventData* pEventData = stackalloc EventData[EVENTDATA_COUNT];
FillInEventData(&pEventData[0], httpVerb, pHttpVerb);
// We have knowledge that pFullUrl is null-terminated so we can optimize away
// the copy we'd otherwise have to perform. Still need to adjust the length
// to account for the null terminator, though.
Debug.Assert(pCookedUrl->pFullUrl != null);
pEventData[1].DataPointer = (IntPtr)pCookedUrl->pFullUrl;
pEventData[1].Size = checked(pCookedUrl->FullUrlLength + sizeof(char));
FillInEventData(&pEventData[2], &requestCorrelationId);
WriteEventCore((int)Events.RequestStarted, EVENTDATA_COUNT, pEventData);
}
}
