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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=4 sw=2 sts=2 et: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsViewSourceChannel.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/NullPrincipal.h"
#include "nsContentSecurityManager.h"
#include "nsContentUtils.h"
#include "nsHttpChannel.h"
#include "nsIHttpHeaderVisitor.h"
#include "nsIIOService.h"
#include "nsIInputStreamChannel.h"
#include "nsIReferrerInfo.h"
#include "nsMimeTypes.h"
#include "nsNetUtil.h"
#include "nsServiceManagerUtils.h"
NS_IMPL_ADDREF(nsViewSourceChannel)
NS_IMPL_RELEASE(nsViewSourceChannel)
/*
This QI uses NS_INTERFACE_MAP_ENTRY_CONDITIONAL to check for
non-nullness of mHttpChannel, mCachingChannel, and mUploadChannel.
*/
NS_INTERFACE_MAP_BEGIN(nsViewSourceChannel)
NS_INTERFACE_MAP_ENTRY(nsIViewSourceChannel)
NS_INTERFACE_MAP_ENTRY(nsIStreamListener)
NS_INTERFACE_MAP_ENTRY(nsIRequestObserver)
NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor)
NS_INTERFACE_MAP_ENTRY(nsIChannelEventSink)
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIHttpChannel, mHttpChannel)
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIIdentChannel, mHttpChannel)
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIHttpChannelInternal,
mHttpChannelInternal)
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsICachingChannel, mCachingChannel)
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsICacheInfoChannel, mCacheInfoChannel)
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIUploadChannel, mUploadChannel)
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIFormPOSTActionChannel, mPostChannel)
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIChildChannel, mChildChannel)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsIRequest, nsIViewSourceChannel)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsIChannel, nsIViewSourceChannel)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIViewSourceChannel)
NS_INTERFACE_MAP_END
nsresult nsViewSourceChannel::Init(nsIURI* uri, nsILoadInfo* aLoadInfo) {
mOriginalURI = uri;
nsAutoCString path;
nsresult rv = uri->GetPathQueryRef(path);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIIOService> pService(do_GetIOService(&rv));
if (NS_FAILED(rv)) return rv;
nsAutoCString scheme;
rv = pService->ExtractScheme(path, scheme);
if (NS_FAILED(rv)) return rv;
// prevent viewing source of javascript URIs (see bug 204779)
if (scheme.EqualsLiteral("javascript")) {
NS_WARNING("blocking view-source:javascript:");
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIURI> newChannelURI;
rv = pService->NewURI(path, nullptr, nullptr, getter_AddRefs(newChannelURI));
NS_ENSURE_SUCCESS(rv, rv);
rv = pService->NewChannelFromURIWithLoadInfo(newChannelURI, aLoadInfo,
getter_AddRefs(mChannel));
NS_ENSURE_SUCCESS(rv, rv);
mIsSrcdocChannel = false;
mChannel->SetOriginalURI(mOriginalURI);
UpdateChannelInterfaces();
return NS_OK;
}
nsresult nsViewSourceChannel::InitSrcdoc(nsIURI* aURI, nsIURI* aBaseURI,
const nsAString& aSrcdoc,
nsILoadInfo* aLoadInfo) {
nsresult rv;
nsCOMPtr<nsIURI> inStreamURI;
// Need to strip view-source: from the URI. Hardcoded to
// about:srcdoc as this is the only permissible URI for srcdoc
// loads
rv = NS_NewURI(getter_AddRefs(inStreamURI), u"about:srcdoc"_ns);
NS_ENSURE_SUCCESS(rv, rv);
rv = NS_NewInputStreamChannelInternal(getter_AddRefs(mChannel), inStreamURI,
aSrcdoc, "text/html"_ns, aLoadInfo,
true);
NS_ENSURE_SUCCESS(rv, rv);
mOriginalURI = aURI;
mIsSrcdocChannel = true;
mChannel->SetOriginalURI(mOriginalURI);
UpdateChannelInterfaces();
rv = UpdateLoadInfoResultPrincipalURI();
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIInputStreamChannel> isc = do_QueryInterface(mChannel);
MOZ_ASSERT(isc);
isc->SetBaseURI(aBaseURI);
return NS_OK;
}
void nsViewSourceChannel::UpdateChannelInterfaces() {
mHttpChannel = do_QueryInterface(mChannel);
mHttpChannelInternal = do_QueryInterface(mChannel);
mCachingChannel = do_QueryInterface(mChannel);
mCacheInfoChannel = do_QueryInterface(mChannel);
mUploadChannel = do_QueryInterface(mChannel);
mPostChannel = do_QueryInterface(mChannel);
mChildChannel = do_QueryInterface(mChannel);
}
void nsViewSourceChannel::ReleaseListeners() {
mListener = nullptr;
mCallbacks = nullptr;
}
nsresult nsViewSourceChannel::UpdateLoadInfoResultPrincipalURI() {
nsresult rv;
MOZ_ASSERT(mChannel);
nsCOMPtr<nsILoadInfo> channelLoadInfo = mChannel->LoadInfo();
nsCOMPtr<nsIURI> channelResultPrincipalURI;
rv = channelLoadInfo->GetResultPrincipalURI(
getter_AddRefs(channelResultPrincipalURI));
if (NS_FAILED(rv)) {
return rv;
}
if (!channelResultPrincipalURI) {
mChannel->GetOriginalURI(getter_AddRefs(channelResultPrincipalURI));
return NS_OK;
}
if (!channelResultPrincipalURI) {
return NS_ERROR_UNEXPECTED;
}
bool alreadyViewSource;
if (NS_SUCCEEDED(channelResultPrincipalURI->SchemeIs("view-source",
&alreadyViewSource)) &&
alreadyViewSource) {
return NS_OK;
}
nsCOMPtr<nsIURI> updatedResultPrincipalURI;
rv = BuildViewSourceURI(channelResultPrincipalURI,
getter_AddRefs(updatedResultPrincipalURI));
if (NS_FAILED(rv)) {
return rv;
}
rv = channelLoadInfo->SetResultPrincipalURI(updatedResultPrincipalURI);
if (NS_FAILED(rv)) {
return rv;
}
return NS_OK;
}
nsresult nsViewSourceChannel::BuildViewSourceURI(nsIURI* aURI,
nsIURI** aResult) {
nsresult rv;
// protect ourselves against broken channel implementations
if (!aURI) {
NS_ERROR("no URI to build view-source uri!");
return NS_ERROR_UNEXPECTED;
}
nsAutoCString spec;
rv = aURI->GetSpec(spec);
if (NS_FAILED(rv)) {
return rv;
}
return NS_NewURI(aResult, "view-source:"_ns + spec);
}
////////////////////////////////////////////////////////////////////////////////
// nsIRequest methods:
NS_IMETHODIMP
nsViewSourceChannel::GetName(nsACString& result) {
nsCOMPtr<nsIURI> uri;
GetURI(getter_AddRefs(uri));
if (uri) {
return uri->GetSpec(result);
}
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsViewSourceChannel::GetTransferSize(uint64_t* aTransferSize) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsViewSourceChannel::GetRequestSize(uint64_t* aRequestSize) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsViewSourceChannel::GetDecodedBodySize(uint64_t* aDecodedBodySize) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsViewSourceChannel::GetEncodedBodySize(uint64_t* aEncodedBodySize) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsViewSourceChannel::IsPending(bool* result) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->IsPending(result);
}
NS_IMETHODIMP
nsViewSourceChannel::GetStatus(nsresult* status) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->GetStatus(status);
}
NS_IMETHODIMP
nsViewSourceChannel::Cancel(nsresult status) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->Cancel(status);
}
NS_IMETHODIMP
nsViewSourceChannel::GetCanceled(bool* aCanceled) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->GetCanceled(aCanceled);
}
NS_IMETHODIMP
nsViewSourceChannel::Suspend(void) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->Suspend();
}
NS_IMETHODIMP
nsViewSourceChannel::Resume(void) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->Resume();
}
////////////////////////////////////////////////////////////////////////////////
// nsIChannel methods:
NS_IMETHODIMP
nsViewSourceChannel::GetOriginalURI(nsIURI** aURI) {
*aURI = do_AddRef(mOriginalURI).take();
return NS_OK;
}
NS_IMETHODIMP
nsViewSourceChannel::SetOriginalURI(nsIURI* aURI) {
NS_ENSURE_ARG_POINTER(aURI);
mOriginalURI = aURI;
return NS_OK;
}
NS_IMETHODIMP
nsViewSourceChannel::GetURI(nsIURI** aURI) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
nsCOMPtr<nsIURI> uri;
nsresult rv = mChannel->GetURI(getter_AddRefs(uri));
if (NS_FAILED(rv)) {
return rv;
}
return BuildViewSourceURI(uri, aURI);
}
NS_IMETHODIMP
nsViewSourceChannel::Open(nsIInputStream** aStream) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return Open(aStream);
}
NS_IMETHODIMP
nsViewSourceChannel::AsyncOpen(nsIStreamListener* aListener) {
// We can't ensure GetInitialSecurityCheckDone here
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
mListener = aListener;
/*
* We want to add ourselves to the loadgroup before opening
* mChannel, since we want to make sure we're in the loadgroup
* when mChannel finishes and fires OnStopRequest()
*/
nsCOMPtr<nsILoadGroup> loadGroup;
mChannel->GetLoadGroup(getter_AddRefs(loadGroup));
if (loadGroup) {
loadGroup->AddRequest(static_cast<nsIViewSourceChannel*>(this), nullptr);
}
nsresult rv = NS_OK;
rv = mChannel->AsyncOpen(this);
if (NS_FAILED(rv) && loadGroup) {
loadGroup->RemoveRequest(static_cast<nsIViewSourceChannel*>(this), nullptr,
rv);
}
if (NS_SUCCEEDED(rv)) {
// We do this here to make sure all notification callbacks changes have been
// made first before we inject this view-source channel.
mChannel->GetNotificationCallbacks(getter_AddRefs(mCallbacks));
mChannel->SetNotificationCallbacks(this);
MOZ_ASSERT(mCallbacks != this, "We have a cycle");
mOpened = true;
}
if (NS_FAILED(rv)) {
ReleaseListeners();
}
return rv;
}
/*
* Both the view source channel and mChannel are added to the
* loadgroup. There should never be more than one request in the
* loadgroup that has LOAD_DOCUMENT_URI set. The one that has this
* flag set is the request whose URI is used to refetch the document,
* so it better be the viewsource channel.
*
* Therefore, we need to make sure that
* 1) The load flags on mChannel _never_ include LOAD_DOCUMENT_URI
* 2) The load flags on |this| include LOAD_DOCUMENT_URI when it was
* set via SetLoadFlags (mIsDocument keeps track of this flag).
*/
NS_IMETHODIMP
nsViewSourceChannel::GetLoadFlags(uint32_t* aLoadFlags) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
nsresult rv = mChannel->GetLoadFlags(aLoadFlags);
if (NS_FAILED(rv)) return rv;
// This should actually be just LOAD_DOCUMENT_URI but the win32 compiler
// fails to deal due to amiguous inheritance. nsIChannel::LOAD_DOCUMENT_URI
// also fails; the Win32 compiler thinks that's supposed to be a method.
if (mIsDocument) *aLoadFlags |= ::nsIChannel::LOAD_DOCUMENT_URI;
return rv;
}
NS_IMETHODIMP
nsViewSourceChannel::SetLoadFlags(uint32_t aLoadFlags) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
// "View source" always wants the currently cached content.
// We also want to have _this_ channel, not mChannel to be the
// 'document' channel in the loadgroup.
// These should actually be just LOAD_FROM_CACHE and LOAD_DOCUMENT_URI but
// the win32 compiler fails to deal due to amiguous inheritance.
// nsIChannel::LOAD_DOCUMENT_URI/nsIRequest::LOAD_FROM_CACHE also fails; the
// Win32 compiler thinks that's supposed to be a method.
mIsDocument = (aLoadFlags & ::nsIChannel::LOAD_DOCUMENT_URI) != 0;
nsresult rv =
mChannel->SetLoadFlags((aLoadFlags | ::nsIRequest::LOAD_FROM_CACHE) &
~::nsIChannel::LOAD_DOCUMENT_URI);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (mHttpChannel) {
rv = mHttpChannel->SetIsMainDocumentChannel(
aLoadFlags & ::nsIChannel::LOAD_DOCUMENT_URI);
MOZ_ASSERT(NS_SUCCEEDED(rv));
}
return NS_OK;
}
NS_IMETHODIMP
nsViewSourceChannel::GetTRRMode(nsIRequest::TRRMode* aTRRMode) {
return nsIViewSourceChannel::GetTRRModeImpl(aTRRMode);
}
NS_IMETHODIMP
nsViewSourceChannel::SetTRRMode(nsIRequest::TRRMode aTRRMode) {
return nsIViewSourceChannel::SetTRRModeImpl(aTRRMode);
}
NS_IMETHODIMP
nsViewSourceChannel::GetContentType(nsACString& aContentType) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
aContentType.Truncate();
if (mContentType.IsEmpty()) {
// Get the current content type
nsresult rv;
nsAutoCString contentType;
rv = mChannel->GetContentType(contentType);
if (NS_FAILED(rv)) return rv;
// If we don't know our type, just say so. The unknown
// content decoder will then kick in automatically, and it
// will call our SetOriginalContentType method instead of our
// SetContentType method to set the type it determines.
if (!contentType.EqualsLiteral(UNKNOWN_CONTENT_TYPE)) {
contentType = VIEWSOURCE_CONTENT_TYPE;
}
mContentType = contentType;
}
aContentType = mContentType;
return NS_OK;
}
NS_IMETHODIMP
nsViewSourceChannel::SetContentType(const nsACString& aContentType) {
// Our GetContentType() currently returns VIEWSOURCE_CONTENT_TYPE
//
// However, during the parsing phase the parser calls our
// channel's GetContentType(). Returning the string above trips up
// the parser. In order to avoid messy changes and not to have the
// parser depend on nsIViewSourceChannel Vidur proposed the
// following solution:
//
// The ViewSourceChannel initially returns a content type of
// VIEWSOURCE_CONTENT_TYPE. Based on this type decisions to
// create a viewer for doing a view source are made. After the
// viewer is created, nsLayoutDLF::CreateInstance() calls this
// SetContentType() with the original content type. When it's
// time for the parser to find out the content type it will call
// our channel's GetContentType() and it will get the original
// content type, such as, text/html and everything is kosher from
// then on.
if (!mOpened) {
// We do not take hints
return NS_ERROR_NOT_AVAILABLE;
}
mContentType = aContentType;
return NS_OK;
}
NS_IMETHODIMP
nsViewSourceChannel::GetContentCharset(nsACString& aContentCharset) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->GetContentCharset(aContentCharset);
}
NS_IMETHODIMP
nsViewSourceChannel::SetContentCharset(const nsACString& aContentCharset) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->SetContentCharset(aContentCharset);
}
// We don't forward these methods becacuse content-disposition isn't whitelisted
// (see GetResponseHeader/VisitResponseHeaders).
NS_IMETHODIMP
nsViewSourceChannel::GetContentDisposition(uint32_t* aContentDisposition) {
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHODIMP
nsViewSourceChannel::SetContentDisposition(uint32_t aContentDisposition) {
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHODIMP
nsViewSourceChannel::GetContentDispositionFilename(
nsAString& aContentDispositionFilename) {
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHODIMP
nsViewSourceChannel::SetContentDispositionFilename(
const nsAString& aContentDispositionFilename) {
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHODIMP
nsViewSourceChannel::GetContentDispositionHeader(
nsACString& aContentDispositionHeader) {
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHODIMP
nsViewSourceChannel::GetContentLength(int64_t* aContentLength) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->GetContentLength(aContentLength);
}
NS_IMETHODIMP
nsViewSourceChannel::SetContentLength(int64_t aContentLength) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->SetContentLength(aContentLength);
}
NS_IMETHODIMP
nsViewSourceChannel::GetLoadGroup(nsILoadGroup** aLoadGroup) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->GetLoadGroup(aLoadGroup);
}
NS_IMETHODIMP
nsViewSourceChannel::SetLoadGroup(nsILoadGroup* aLoadGroup) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->SetLoadGroup(aLoadGroup);
}
NS_IMETHODIMP
nsViewSourceChannel::GetOwner(nsISupports** aOwner) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->GetOwner(aOwner);
}
NS_IMETHODIMP
nsViewSourceChannel::SetOwner(nsISupports* aOwner) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->SetOwner(aOwner);
}
NS_IMETHODIMP
nsViewSourceChannel::GetLoadInfo(nsILoadInfo** aLoadInfo) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->GetLoadInfo(aLoadInfo);
}
NS_IMETHODIMP
nsViewSourceChannel::SetLoadInfo(nsILoadInfo* aLoadInfo) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
MOZ_RELEASE_ASSERT(aLoadInfo, "loadinfo can't be null");
return mChannel->SetLoadInfo(aLoadInfo);
}
NS_IMETHODIMP
nsViewSourceChannel::GetIsDocument(bool* aIsDocument) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->GetIsDocument(aIsDocument);
}
NS_IMETHODIMP
nsViewSourceChannel::GetNotificationCallbacks(
nsIInterfaceRequestor** aNotificationCallbacks) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->GetNotificationCallbacks(aNotificationCallbacks);
}
NS_IMETHODIMP
nsViewSourceChannel::SetNotificationCallbacks(
nsIInterfaceRequestor* aNotificationCallbacks) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->SetNotificationCallbacks(aNotificationCallbacks);
}
NS_IMETHODIMP
nsViewSourceChannel::GetSecurityInfo(nsISupports** aSecurityInfo) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->GetSecurityInfo(aSecurityInfo);
}
// nsIViewSourceChannel methods
NS_IMETHODIMP
nsViewSourceChannel::GetOriginalContentType(nsACString& aContentType) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
return mChannel->GetContentType(aContentType);
}
NS_IMETHODIMP
nsViewSourceChannel::SetOriginalContentType(const nsACString& aContentType) {
NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
// clear our cached content-type value
mContentType.Truncate();
return mChannel->SetContentType(aContentType);
}
NS_IMETHODIMP
nsViewSourceChannel::GetIsSrcdocChannel(bool* aIsSrcdocChannel) {
*aIsSrcdocChannel = mIsSrcdocChannel;
return NS_OK;
}
NS_IMETHODIMP
nsViewSourceChannel::GetBaseURI(nsIURI** aBaseURI) {
if (mIsSrcdocChannel) {
nsCOMPtr<nsIInputStreamChannel> isc = do_QueryInterface(mChannel);
if (isc) {
return isc->GetBaseURI(aBaseURI);
}
}
*aBaseURI = mBaseURI;
NS_IF_ADDREF(*aBaseURI);
return NS_OK;
}
NS_IMETHODIMP
nsViewSourceChannel::SetBaseURI(nsIURI* aBaseURI) {
mBaseURI = aBaseURI;
return NS_OK;
}
nsIChannel* nsViewSourceChannel::GetInnerChannel() { return mChannel; }
NS_IMETHODIMP
nsViewSourceChannel::GetProtocolVersion(nsACString& aProtocolVersion) {
return NS_ERROR_NOT_IMPLEMENTED;
}
// nsIRequestObserver methods
NS_IMETHODIMP
nsViewSourceChannel::OnStartRequest(nsIRequest* aRequest) {
NS_ENSURE_TRUE(mListener, NS_ERROR_FAILURE);
// The channel may have gotten redirected... Time to update our info
mChannel = do_QueryInterface(aRequest);
UpdateChannelInterfaces();
nsresult rv = UpdateLoadInfoResultPrincipalURI();
if (NS_FAILED(rv)) {
Cancel(rv);
}
return mListener->OnStartRequest(static_cast<nsIViewSourceChannel*>(this));
}
NS_IMETHODIMP
nsViewSourceChannel::OnStopRequest(nsIRequest* aRequest, nsresult aStatus) {
NS_ENSURE_TRUE(mListener, NS_ERROR_FAILURE);
if (mChannel) {
nsCOMPtr<nsILoadGroup> loadGroup;
mChannel->GetLoadGroup(getter_AddRefs(loadGroup));
if (loadGroup) {
loadGroup->RemoveRequest(static_cast<nsIViewSourceChannel*>(this),
nullptr, aStatus);
}
}
nsresult rv = mListener->OnStopRequest(
static_cast<nsIViewSourceChannel*>(this), aStatus);
ReleaseListeners();
return rv;
}
// nsIStreamListener methods
NS_IMETHODIMP
nsViewSourceChannel::OnDataAvailable(nsIRequest* aRequest,
nsIInputStream* aInputStream,
uint64_t aSourceOffset, uint32_t aLength) {
NS_ENSURE_TRUE(mListener, NS_ERROR_FAILURE);
return mListener->OnDataAvailable(static_cast<nsIViewSourceChannel*>(this),
aInputStream, aSourceOffset, aLength);
}
// nsIHttpChannel methods
// We want to forward most of nsIHttpChannel over to mHttpChannel, but we want
// to override GetRequestHeader and VisitHeaders. The reason is that we don't
// want various headers like Link: and Refresh: applying to view-source.
NS_IMETHODIMP
nsViewSourceChannel::GetChannelId(uint64_t* aChannelId) {
NS_ENSURE_ARG_POINTER(aChannelId);
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->GetChannelId(aChannelId);
}
NS_IMETHODIMP
nsViewSourceChannel::SetChannelId(uint64_t aChannelId) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->SetChannelId(aChannelId);
}
NS_IMETHODIMP
nsViewSourceChannel::GetTopLevelContentWindowId(uint64_t* aWindowId) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->GetTopLevelContentWindowId(aWindowId);
}
NS_IMETHODIMP
nsViewSourceChannel::SetTopLevelContentWindowId(uint64_t aWindowId) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->SetTopLevelContentWindowId(aWindowId);
}
NS_IMETHODIMP
nsViewSourceChannel::GetTopBrowsingContextId(uint64_t* aId) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->GetTopBrowsingContextId(aId);
}
NS_IMETHODIMP
nsViewSourceChannel::SetTopBrowsingContextId(uint64_t aId) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->SetTopBrowsingContextId(aId);
}
NS_IMETHODIMP
nsViewSourceChannel::GetFlashPluginState(
nsIHttpChannel::FlashPluginState* aResult) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->GetFlashPluginState(aResult);
}
NS_IMETHODIMP
nsViewSourceChannel::GetRequestMethod(nsACString& aRequestMethod) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->GetRequestMethod(aRequestMethod);
}
NS_IMETHODIMP
nsViewSourceChannel::SetRequestMethod(const nsACString& aRequestMethod) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->SetRequestMethod(aRequestMethod);
}
NS_IMETHODIMP
nsViewSourceChannel::GetReferrerInfo(nsIReferrerInfo** aReferrerInfo) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->GetReferrerInfo(aReferrerInfo);
}
NS_IMETHODIMP
nsViewSourceChannel::SetReferrerInfo(nsIReferrerInfo* aReferrerInfo) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->SetReferrerInfo(aReferrerInfo);
}
NS_IMETHODIMP nsViewSourceChannel::SetReferrerInfoWithoutClone(
nsIReferrerInfo* aReferrerInfo) {
return !mHttpChannel
? NS_ERROR_NULL_POINTER
: mHttpChannel->SetReferrerInfoWithoutClone(aReferrerInfo);
}
NS_IMETHODIMP
nsViewSourceChannel::GetRequestHeader(const nsACString& aHeader,
nsACString& aValue) {
aValue.Truncate();
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->GetRequestHeader(aHeader, aValue);
}
NS_IMETHODIMP
nsViewSourceChannel::SetRequestHeader(const nsACString& aHeader,
const nsACString& aValue, bool aMerge) {
return !mHttpChannel
? NS_ERROR_NULL_POINTER
: mHttpChannel->SetRequestHeader(aHeader, aValue, aMerge);
}
NS_IMETHODIMP
nsViewSourceChannel::SetNewReferrerInfo(
const nsACString& aUrl, nsIReferrerInfo::ReferrerPolicyIDL aPolicy,
bool aSendReferrer) {
return !mHttpChannel
? NS_ERROR_NULL_POINTER
: mHttpChannel->SetNewReferrerInfo(aUrl, aPolicy, aSendReferrer);
}
NS_IMETHODIMP
nsViewSourceChannel::SetEmptyRequestHeader(const nsACString& aHeader) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->SetEmptyRequestHeader(aHeader);
}
NS_IMETHODIMP
nsViewSourceChannel::VisitRequestHeaders(nsIHttpHeaderVisitor* aVisitor) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->VisitRequestHeaders(aVisitor);
}
NS_IMETHODIMP
nsViewSourceChannel::VisitNonDefaultRequestHeaders(
nsIHttpHeaderVisitor* aVisitor) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->VisitNonDefaultRequestHeaders(aVisitor);
}
NS_IMETHODIMP
nsViewSourceChannel::ShouldStripRequestBodyHeader(const nsACString& aMethod,
bool* aResult) {
return !mHttpChannel
? NS_ERROR_NULL_POINTER
: mHttpChannel->ShouldStripRequestBodyHeader(aMethod, aResult);
}
NS_IMETHODIMP
nsViewSourceChannel::GetAllowPipelining(bool* aAllowPipelining) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->GetAllowPipelining(aAllowPipelining);
}
NS_IMETHODIMP
nsViewSourceChannel::SetAllowPipelining(bool aAllowPipelining) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->SetAllowPipelining(aAllowPipelining);
}
NS_IMETHODIMP
nsViewSourceChannel::GetAllowSTS(bool* aAllowSTS) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->GetAllowSTS(aAllowSTS);
}
NS_IMETHODIMP
nsViewSourceChannel::SetAllowSTS(bool aAllowSTS) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->SetAllowSTS(aAllowSTS);
}
NS_IMETHODIMP
nsViewSourceChannel::GetRedirectionLimit(uint32_t* aRedirectionLimit) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->GetRedirectionLimit(aRedirectionLimit);
}
NS_IMETHODIMP
nsViewSourceChannel::SetRedirectionLimit(uint32_t aRedirectionLimit) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->SetRedirectionLimit(aRedirectionLimit);
}
NS_IMETHODIMP
nsViewSourceChannel::GetResponseStatus(uint32_t* aResponseStatus) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->GetResponseStatus(aResponseStatus);
}
NS_IMETHODIMP
nsViewSourceChannel::GetResponseStatusText(nsACString& aResponseStatusText) {
return !mHttpChannel
? NS_ERROR_NULL_POINTER
: mHttpChannel->GetResponseStatusText(aResponseStatusText);
}
NS_IMETHODIMP
nsViewSourceChannel::GetRequestSucceeded(bool* aRequestSucceeded) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->GetRequestSucceeded(aRequestSucceeded);
}
NS_IMETHODIMP
nsViewSourceChannel::GetResponseHeader(const nsACString& aHeader,
nsACString& aValue) {
aValue.Truncate();
if (!mHttpChannel) return NS_ERROR_NULL_POINTER;
if (!aHeader.Equals("Content-Type"_ns, nsCaseInsensitiveCStringComparator) &&
!aHeader.Equals("Content-Security-Policy"_ns,
nsCaseInsensitiveCStringComparator) &&
!aHeader.Equals("Content-Security-Policy-Report-Only"_ns,
nsCaseInsensitiveCStringComparator) &&
!aHeader.Equals("X-Frame-Options"_ns,
nsCaseInsensitiveCStringComparator)) {
// We simulate the NS_ERROR_NOT_AVAILABLE error which is produced by
// GetResponseHeader via nsHttpHeaderArray::GetHeader when the entry is
// not present, such that it appears as though no headers except for the
// whitelisted ones were set on this channel.
return NS_ERROR_NOT_AVAILABLE;
}
return mHttpChannel->GetResponseHeader(aHeader, aValue);
}
NS_IMETHODIMP
nsViewSourceChannel::SetResponseHeader(const nsACString& header,
const nsACString& value, bool merge) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->SetResponseHeader(header, value, merge);
}
NS_IMETHODIMP
nsViewSourceChannel::VisitResponseHeaders(nsIHttpHeaderVisitor* aVisitor) {
if (!mHttpChannel) return NS_ERROR_NULL_POINTER;
constexpr auto contentTypeStr = "Content-Type"_ns;
nsAutoCString contentType;
nsresult rv = mHttpChannel->GetResponseHeader(contentTypeStr, contentType);
if (NS_SUCCEEDED(rv)) {
return aVisitor->VisitHeader(contentTypeStr, contentType);
}
return NS_OK;
}
NS_IMETHODIMP
nsViewSourceChannel::GetOriginalResponseHeader(const nsACString& aHeader,
nsIHttpHeaderVisitor* aVisitor) {
nsAutoCString value;
nsresult rv = GetResponseHeader(aHeader, value);
if (NS_FAILED(rv)) {
return rv;
}
return aVisitor->VisitHeader(aHeader, value);
}
NS_IMETHODIMP
nsViewSourceChannel::VisitOriginalResponseHeaders(
nsIHttpHeaderVisitor* aVisitor) {
return VisitResponseHeaders(aVisitor);
}
NS_IMETHODIMP
nsViewSourceChannel::IsNoStoreResponse(bool* _retval) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->IsNoStoreResponse(_retval);
}
NS_IMETHODIMP
nsViewSourceChannel::IsNoCacheResponse(bool* _retval) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->IsNoCacheResponse(_retval);
}
NS_IMETHODIMP
nsViewSourceChannel::IsPrivateResponse(bool* _retval) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->IsPrivateResponse(_retval);
}
NS_IMETHODIMP
nsViewSourceChannel::RedirectTo(nsIURI* uri) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER : mHttpChannel->RedirectTo(uri);
}
NS_IMETHODIMP
nsViewSourceChannel::UpgradeToSecure() {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->UpgradeToSecure();
}
NS_IMETHODIMP
nsViewSourceChannel::GetRequestContextID(uint64_t* _retval) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->GetRequestContextID(_retval);
}
NS_IMETHODIMP
nsViewSourceChannel::SetRequestContextID(uint64_t rcid) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->SetRequestContextID(rcid);
}
NS_IMETHODIMP
nsViewSourceChannel::GetIsMainDocumentChannel(bool* aValue) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->GetIsMainDocumentChannel(aValue);
}
NS_IMETHODIMP
nsViewSourceChannel::SetIsMainDocumentChannel(bool aValue) {
return !mHttpChannel ? NS_ERROR_NULL_POINTER
: mHttpChannel->SetIsMainDocumentChannel(aValue);
}
// Have to manually forward SetCorsPreflightParameters since it's [notxpcom]
void nsViewSourceChannel::SetCorsPreflightParameters(
const nsTArray<nsCString>& aUnsafeHeaders,
bool aShouldStripRequestBodyHeader) {
mHttpChannelInternal->SetCorsPreflightParameters(
aUnsafeHeaders, aShouldStripRequestBodyHeader);
}
void nsViewSourceChannel::SetAltDataForChild(bool aIsForChild) {
mHttpChannelInternal->SetAltDataForChild(aIsForChild);
}
void nsViewSourceChannel::DisableAltDataCache() {
mHttpChannelInternal->DisableAltDataCache();
}
NS_IMETHODIMP
nsViewSourceChannel::LogBlockedCORSRequest(const nsAString& aMessage,
const nsACString& aCategory) {
if (!mHttpChannel) {
NS_WARNING(
"nsViewSourceChannel::LogBlockedCORSRequest mHttpChannel is null");
return NS_ERROR_UNEXPECTED;
}
return mHttpChannel->LogBlockedCORSRequest(aMessage, aCategory);
}
NS_IMETHODIMP
nsViewSourceChannel::LogMimeTypeMismatch(const nsACString& aMessageName,
bool aWarning, const nsAString& aURL,
const nsAString& aContentType) {
if (!mHttpChannel) {
NS_WARNING("nsViewSourceChannel::LogMimeTypeMismatch mHttpChannel is null");
return NS_ERROR_UNEXPECTED;
}
return mHttpChannel->LogMimeTypeMismatch(aMessageName, aWarning, aURL,
aContentType);
}
const nsTArray<mozilla::net::PreferredAlternativeDataTypeParams>&
nsViewSourceChannel::PreferredAlternativeDataTypes() {
if (mCacheInfoChannel) {
return mCacheInfoChannel->PreferredAlternativeDataTypes();
}
return mEmptyArray;
}
void nsViewSourceChannel::SetIPv4Disabled() {
if (mHttpChannelInternal) {
mHttpChannelInternal->SetIPv4Disabled();
}
}
void nsViewSourceChannel::SetIPv6Disabled() {
if (mHttpChannelInternal) {
mHttpChannelInternal->SetIPv6Disabled();
}
}
void nsViewSourceChannel::DoDiagnosticAssertWhenOnStopNotCalledOnDestroy() {
if (mHttpChannelInternal) {
mHttpChannelInternal->DoDiagnosticAssertWhenOnStopNotCalledOnDestroy();
}
}
// nsIChildChannel methods
NS_IMETHODIMP
nsViewSourceChannel::ConnectParent(uint32_t aRegistarId) {
NS_ENSURE_TRUE(mChildChannel, NS_ERROR_NULL_POINTER);
return mChildChannel->ConnectParent(aRegistarId);
}
NS_IMETHODIMP
nsViewSourceChannel::CompleteRedirectSetup(nsIStreamListener* aListener) {
NS_ENSURE_TRUE(mChildChannel, NS_ERROR_NULL_POINTER);
mListener = aListener;
/*
* We want to add ourselves to the loadgroup before opening
* mChannel, since we want to make sure we're in the loadgroup
* when mChannel finishes and fires OnStopRequest()
*/
nsCOMPtr<nsILoadGroup> loadGroup;
mChannel->GetLoadGroup(getter_AddRefs(loadGroup));
if (loadGroup) {
loadGroup->AddRequest(static_cast<nsIViewSourceChannel*>(this), nullptr);
}
nsresult rv = NS_OK;
rv = mChildChannel->CompleteRedirectSetup(this);
if (NS_FAILED(rv) && loadGroup) {
loadGroup->RemoveRequest(static_cast<nsIViewSourceChannel*>(this), nullptr,
rv);
}
if (NS_SUCCEEDED(rv)) {
mOpened = true;
}
return rv;
}
// nsIChannelEventSink
NS_IMETHODIMP
nsViewSourceChannel::AsyncOnChannelRedirect(
nsIChannel* oldChannel, nsIChannel* newChannel, uint32_t flags,
nsIAsyncVerifyRedirectCallback* callback) {
nsresult rv;
// We want consumers of the new inner channel be able to recognize it's
// actually used for view-source. Hence we modify its original URI here.
// This will not affect security checks because those have already been
// synchronously done before our event sink is called. Note that result
// principal URI is still modified at the OnStartRequest notification.
nsCOMPtr<nsIURI> newChannelOrigURI;
rv = newChannel->GetOriginalURI(getter_AddRefs(newChannelOrigURI));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIURI> newChannelUpdatedOrigURI;
rv = BuildViewSourceURI(newChannelOrigURI,
getter_AddRefs(newChannelUpdatedOrigURI));
NS_ENSURE_SUCCESS(rv, rv);
rv = newChannel->SetOriginalURI(newChannelUpdatedOrigURI);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIChannelEventSink> sink(do_QueryInterface(mCallbacks));
if (sink) {
return sink->AsyncOnChannelRedirect(oldChannel, newChannel, flags,
callback);
}
callback->OnRedirectVerifyCallback(NS_OK);
return NS_OK;
}
// nsIInterfaceRequestor
NS_IMETHODIMP
nsViewSourceChannel::GetInterface(const nsIID& aIID, void** aResult) {
if (aIID.Equals(NS_GET_IID(nsIChannelEventSink))) {
nsCOMPtr<nsIChannelEventSink> self(this);
self.forget(aResult);
return NS_OK;
}
if (mCallbacks) {
return mCallbacks->GetInterface(aIID, aResult);
}
return NS_ERROR_NO_INTERFACE;
}