diff options
Diffstat (limited to 'netwerk/protocol/viewsource/nsViewSourceChannel.cpp')
| -rw-r--r-- | netwerk/protocol/viewsource/nsViewSourceChannel.cpp | 1220 |
1 files changed, 1220 insertions, 0 deletions
diff --git a/netwerk/protocol/viewsource/nsViewSourceChannel.cpp b/netwerk/protocol/viewsource/nsViewSourceChannel.cpp new file mode 100644 index 0000000000..f2428a5744 --- /dev/null +++ b/netwerk/protocol/viewsource/nsViewSourceChannel.cpp @@ -0,0 +1,1220 @@ +/* -*- 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 "nsIExternalProtocolHandler.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 + +static nsresult WillUseExternalProtocolHandler(nsIIOService* aIOService, + const char* aScheme) { + nsCOMPtr<nsIProtocolHandler> handler; + nsresult rv = + aIOService->GetProtocolHandler(aScheme, getter_AddRefs(handler)); + if (NS_FAILED(rv)) { + return rv; + } + + nsCOMPtr<nsIExternalProtocolHandler> externalHandler = + do_QueryInterface(handler); + // We should not allow view-source to open any external app. + if (externalHandler) { + NS_WARNING(nsPrintfCString("blocking view-source:%s:", aScheme).get()); + return NS_ERROR_MALFORMED_URI; + } + + return NS_OK; +} + +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; + } + + rv = WillUseExternalProtocolHandler(pService, scheme.get()); + if (NS_FAILED(rv)) { + return rv; + } + + 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::SetCanceledReason( + const nsACString& aReason) { + return nsIViewSourceChannel::SetCanceledReasonImpl(aReason); +} + +NS_IMETHODIMP nsViewSourceChannel::GetCanceledReason(nsACString& aReason) { + return nsIViewSourceChannel::GetCanceledReasonImpl(aReason); +} + +NS_IMETHODIMP nsViewSourceChannel::CancelWithReason(nsresult aStatus, + const nsACString& aReason) { + return nsIViewSourceChannel::CancelWithReasonImpl(aStatus, aReason); +} + +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.IsEmpty()) { + 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(nsITransportSecurityInfo** 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 = do_AddRef(mBaseURI).take(); + 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::GetBrowserId(uint64_t* aId) { + return !mHttpChannel ? NS_ERROR_NULL_POINTER + : mHttpChannel->GetBrowserId(aId); +} + +NS_IMETHODIMP +nsViewSourceChannel::SetBrowserId(uint64_t aId) { + return !mHttpChannel ? NS_ERROR_NULL_POINTER + : mHttpChannel->SetBrowserId(aId); +} + +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::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); +} + +NS_IMETHODIMP nsViewSourceChannel::SetClassicScriptHintCharset( + const nsAString& aClassicScriptHintCharset) { + return !mHttpChannel ? NS_ERROR_NULL_POINTER + : mHttpChannel->SetClassicScriptHintCharset( + aClassicScriptHintCharset); +} + +NS_IMETHODIMP nsViewSourceChannel::GetClassicScriptHintCharset( + nsAString& aClassicScriptHintCharset) { + return !mHttpChannel ? NS_ERROR_NULL_POINTER + : mHttpChannel->GetClassicScriptHintCharset( + aClassicScriptHintCharset); +} + +NS_IMETHODIMP nsViewSourceChannel::SetDocumentCharacterSet( + const nsAString& aDocumentCharacterSet) { + return !mHttpChannel + ? NS_ERROR_NULL_POINTER + : mHttpChannel->SetDocumentCharacterSet(aDocumentCharacterSet); +} + +NS_IMETHODIMP nsViewSourceChannel::GetDocumentCharacterSet( + nsAString& aDocumentCharacterSet) { + return !mHttpChannel + ? NS_ERROR_NULL_POINTER + : mHttpChannel->GetDocumentCharacterSet(aDocumentCharacterSet); +} +// 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, + bool aIsWarning) { + if (!mHttpChannel) { + NS_WARNING( + "nsViewSourceChannel::LogBlockedCORSRequest mHttpChannel is null"); + return NS_ERROR_UNEXPECTED; + } + return mHttpChannel->LogBlockedCORSRequest(aMessage, aCategory, aIsWarning); +} + +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); +} + +// FIXME: Should this forward to mHttpChannel? This was previously handled by a +// default empty implementation. +void nsViewSourceChannel::SetSource( + mozilla::UniquePtr<mozilla::ProfileChunkedBuffer> aSource) {} + +const nsTArray<mozilla::net::PreferredAlternativeDataTypeParams>& +nsViewSourceChannel::PreferredAlternativeDataTypes() { + if (mCacheInfoChannel) { + return mCacheInfoChannel->PreferredAlternativeDataTypes(); + } + return mEmptyArray; +} + +void nsViewSourceChannel::DoDiagnosticAssertWhenOnStopNotCalledOnDestroy() { + if (mHttpChannelInternal) { + mHttpChannelInternal->DoDiagnosticAssertWhenOnStopNotCalledOnDestroy(); + } +} + +// FIXME: Should this forward to mHttpChannelInternal? This was previously +// handled by a default empty implementation. +void nsViewSourceChannel::SetConnectionInfo( + mozilla::net::nsHttpConnectionInfo* aInfo) {} + +// 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); + + nsAutoCString scheme; + rv = newChannelOrigURI->GetScheme(scheme); + if (NS_FAILED(rv)) { + return rv; + } + + nsCOMPtr<nsIIOService> ioService(do_GetIOService(&rv)); + if (NS_FAILED(rv)) { + return rv; + } + + rv = WillUseExternalProtocolHandler(ioService, scheme.get()); + if (NS_FAILED(rv)) { + return 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; +} |