The Tor Browser: netwerk/protocol/app/AppProtocolHandler.cpp@7e26c7da4463 (annotated)

netwerk/protocol/app/AppProtocolHandler.cpp@7e26c7da4463 (annotated)

netwerk/protocol/app/AppProtocolHandler.cpp

Wed, 31 Dec 2014 06:55:50 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:55:50 +0100
changeset 2: 7e26c7da4463
permissions: -rw-r--r--

Added tag UPSTREAM_283F7C6 for changeset ca08bd8f51b2

 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* vim:set expandtab ts=2 sw=2 sts=2 cin: */
 /* 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 "AppProtocolHandler.h"
 #include "nsBaseChannel.h"
 #include "nsJARChannel.h"
 #include "nsNetCID.h"
 #include "nsIAppsService.h"
 #include "nsCxPusher.h"
 #include "nsXULAppAPI.h"
 /**
   * This dummy channel implementation only provides enough functionality
   * to return a fake 404 error when the caller asks for an app:// URL
   * containing an unknown appId.
   */
 class DummyChannel : public nsIJARChannel
                           , nsRunnable
 {
 public:
   NS_DECL_ISUPPORTS
   NS_DECL_NSIREQUEST
   NS_DECL_NSICHANNEL
   NS_DECL_NSIJARCHANNEL
   DummyChannel();
   NS_IMETHODIMP Run();
 private:
   bool                        mPending;
   uint32_t                    mSuspendCount;
   nsCOMPtr<nsISupports>       mListenerContext;
   nsCOMPtr<nsIStreamListener> mListener;
   nsCOMPtr<nsILoadGroup>      mLoadGroup;
   nsLoadFlags                 mLoadFlags;
 };
 NS_IMPL_ISUPPORTS(DummyChannel, nsIRequest, nsIChannel, nsIJARChannel)
 DummyChannel::DummyChannel() : mPending(false)
                              , mSuspendCount(0)
                              , mLoadFlags(LOAD_NORMAL)
 {
 }
 NS_IMETHODIMP DummyChannel::GetName(nsACString &result)
 {
   result = "dummy_app_channel";
   return NS_OK;
 }
 NS_IMETHODIMP DummyChannel::GetStatus(nsresult *aStatus)
 {
   *aStatus = NS_ERROR_FILE_NOT_FOUND;
   return NS_OK;
 }
 NS_IMETHODIMP DummyChannel::IsPending(bool *aResult)
 {
   *aResult = mPending;
   return NS_OK;
 }
 NS_IMETHODIMP DummyChannel::Suspend()
 {
   mSuspendCount++;
   return NS_OK;
 }
 NS_IMETHODIMP DummyChannel::Resume()
 {
   if (mSuspendCount <= 0) {
     return NS_ERROR_UNEXPECTED;
   }
   if (--mSuspendCount == 0) {
     NS_DispatchToMainThread(this, NS_DISPATCH_NORMAL);
   }
   return NS_OK;
 }
 NS_IMETHODIMP DummyChannel::Open(nsIInputStream**)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::AsyncOpen(nsIStreamListener* aListener, nsISupports* aContext)
 {
   mListener = aListener;
   mListenerContext = aContext;
   mPending = true;
   if (mLoadGroup) {
     mLoadGroup->AddRequest(this, aContext);
   }
   if (mSuspendCount == 0) {
     NS_DispatchToMainThread(this, NS_DISPATCH_NORMAL);
   }
   return NS_OK;
 }
 // nsIJarChannel, needed for XHR to turn NS_ERROR_FILE_NOT_FOUND into
 // a 404 error.
 NS_IMETHODIMP DummyChannel::GetIsUnsafe(bool *aResult)
 {
   *aResult = false;
   return NS_OK;
 }
 NS_IMETHODIMP DummyChannel::SetAppURI(nsIURI *aURI)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::Run()
 {
   nsresult rv = mListener->OnStartRequest(this, mListenerContext);
   NS_ENSURE_SUCCESS(rv, rv);
   mPending = false;
   rv = mListener->OnStopRequest(this, mListenerContext, NS_ERROR_FILE_NOT_FOUND);
   NS_ENSURE_SUCCESS(rv, rv);
   if (mLoadGroup) {
     mLoadGroup->RemoveRequest(this, mListenerContext, NS_ERROR_FILE_NOT_FOUND);
   }
   mListener = nullptr;
   mListenerContext = nullptr;
   rv = SetNotificationCallbacks(nullptr);
   NS_ENSURE_SUCCESS(rv, rv);
   return NS_OK;
 }
 NS_IMETHODIMP DummyChannel::Cancel(nsresult)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::GetLoadGroup(nsILoadGroup* *aLoadGroup)
 {
   *aLoadGroup = mLoadGroup;
   NS_IF_ADDREF(*aLoadGroup);
   return NS_OK;
 }
 NS_IMETHODIMP DummyChannel::SetLoadGroup(nsILoadGroup* aLoadGroup)
 {
   mLoadGroup = aLoadGroup;
   return NS_OK;
 }
 NS_IMETHODIMP DummyChannel::GetLoadFlags(nsLoadFlags *aLoadFlags)
 {
   *aLoadFlags = mLoadFlags;
   return NS_OK;
 }
 NS_IMETHODIMP DummyChannel::SetLoadFlags(nsLoadFlags aLoadFlags)
 {
   mLoadFlags = aLoadFlags;
   return NS_OK;
 }
 NS_IMETHODIMP DummyChannel::GetOriginalURI(nsIURI**)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::SetOriginalURI(nsIURI*)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::GetOwner(nsISupports**)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::SetOwner(nsISupports*)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::GetNotificationCallbacks(nsIInterfaceRequestor**)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::SetNotificationCallbacks(nsIInterfaceRequestor*)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::GetSecurityInfo(nsISupports**)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::GetContentType(nsACString&)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::SetContentType(const nsACString&)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::GetContentCharset(nsACString&)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::SetContentCharset(const nsACString&)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::GetContentLength(int64_t*)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::SetContentLength(int64_t)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::GetContentDisposition(uint32_t*)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::SetContentDisposition(uint32_t)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::GetURI(nsIURI**)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::GetContentDispositionFilename(nsAString&)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::SetContentDispositionFilename(nsAString const &)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 NS_IMETHODIMP DummyChannel::GetContentDispositionHeader(nsACString&)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 /**
   * app:// protocol implementation.
   */
 AppProtocolHandler::AppProtocolHandler() {
 }
 AppProtocolHandler::~AppProtocolHandler() {
   mAppInfoCache.Clear();
 }
 NS_IMPL_ISUPPORTS(AppProtocolHandler, nsIProtocolHandler)
 /* static */
 nsresult
 AppProtocolHandler::Create(nsISupports* aOuter,
                            const nsIID& aIID,
                            void* *aResult)
 {
   // Instantiate the service here since that intializes gJarHandler, which we
   // use indirectly (via our new JarChannel) in NewChannel.
   nsCOMPtr<nsIProtocolHandler> jarInitializer(
     do_GetService(NS_NETWORK_PROTOCOL_CONTRACTID_PREFIX "jar"));
   AppProtocolHandler* ph = new AppProtocolHandler();
   if (ph == nullptr) {
     return NS_ERROR_OUT_OF_MEMORY;
   }
   NS_ADDREF(ph);
   nsresult rv = ph->QueryInterface(aIID, aResult);
   NS_RELEASE(ph);
   return rv;
 }
 NS_IMETHODIMP
 AppProtocolHandler::GetScheme(nsACString &aResult)
 {
   aResult.AssignLiteral("app");
   return NS_OK;
 }
 NS_IMETHODIMP
 AppProtocolHandler::GetDefaultPort(int32_t *aResult)
 {
   // No ports for the app protocol.
   *aResult = -1;
   return NS_OK;
 }
 NS_IMETHODIMP
 AppProtocolHandler::GetProtocolFlags(uint32_t *aResult)
 {
   *aResult = URI_NOAUTH |
              URI_DANGEROUS_TO_LOAD |
              URI_CROSS_ORIGIN_NEEDS_WEBAPPS_PERM;
   return NS_OK;
 }
 NS_IMETHODIMP
 AppProtocolHandler::NewURI(const nsACString &aSpec,
                            const char *aCharset, // ignore charset info
                            nsIURI *aBaseURI,
                            nsIURI **result)
 {
   nsresult rv;
   nsCOMPtr<nsIStandardURL> surl(do_CreateInstance(NS_STANDARDURL_CONTRACTID, &rv));
   NS_ENSURE_SUCCESS(rv, rv);
   rv = surl->Init(nsIStandardURL::URLTYPE_STANDARD, -1, aSpec, aCharset, aBaseURI);
   NS_ENSURE_SUCCESS(rv, rv);
   nsCOMPtr<nsIURL> url(do_QueryInterface(surl, &rv));
   NS_ENSURE_SUCCESS(rv, rv);
   url.forget(result);
   return NS_OK;
 }
 // We map app://ABCDEF/path/to/file.ext to
 // jar:file:///path/to/profile/webapps/ABCDEF/application.zip!/path/to/file.ext
 NS_IMETHODIMP
 AppProtocolHandler::NewChannel(nsIURI* aUri, nsIChannel* *aResult)
 {
   NS_ENSURE_ARG_POINTER(aUri);
   nsRefPtr<nsJARChannel> channel = new nsJARChannel();
   nsAutoCString host;
   nsresult rv = aUri->GetHost(host);
   NS_ENSURE_SUCCESS(rv, rv);
   nsAutoCString fileSpec;
   nsCOMPtr<nsIURL> url = do_QueryInterface(aUri);
   rv = url->GetFilePath(fileSpec);
   NS_ENSURE_SUCCESS(rv, rv);
   mozilla::dom::AppInfo *appInfo;
   if (!mAppInfoCache.Get(host, &appInfo)) {
     nsCOMPtr<nsIAppsService> appsService = do_GetService(APPS_SERVICE_CONTRACTID);
     if (!appsService) {
       return NS_ERROR_FAILURE;
     }
     mozilla::AutoSafeJSContext cx;
     JS::RootedValue jsInfo(cx);
     rv = appsService->GetAppInfo(NS_ConvertUTF8toUTF16(host), &jsInfo);
     if (NS_FAILED(rv) || !jsInfo.isObject()) {
       // Return a DummyChannel.
       printf_stderr("!! Creating a dummy channel for %s (no appInfo)\n", host.get());
       NS_IF_ADDREF(*aResult = new DummyChannel());
       return NS_OK;
     }
     appInfo = new mozilla::dom::AppInfo();
     JSAutoCompartment ac(cx, &jsInfo.toObject());
     if (!appInfo->Init(cx, jsInfo) || appInfo->mPath.IsEmpty()) {
       // Return a DummyChannel.
       printf_stderr("!! Creating a dummy channel for %s (invalid appInfo)\n", host.get());
       NS_IF_ADDREF(*aResult = new DummyChannel());
       return NS_OK;
     }
     mAppInfoCache.Put(host, appInfo);
   }
   bool noRemote = (appInfo->mIsCoreApp ||
                    XRE_GetProcessType() == GeckoProcessType_Default);
   // In-parent and CoreApps can directly access files, so use jar:file://
   nsAutoCString jarSpec(noRemote ? "jar:file://"
                                  : "jar:remoteopenfile://");
   jarSpec += NS_ConvertUTF16toUTF8(appInfo->mPath) +
              NS_LITERAL_CSTRING("/application.zip!") +
              fileSpec;
   nsCOMPtr<nsIURI> jarURI;
   rv = NS_NewURI(getter_AddRefs(jarURI),
                  jarSpec, nullptr, nullptr);
   NS_ENSURE_SUCCESS(rv, rv);
   rv = channel->Init(jarURI);
   NS_ENSURE_SUCCESS(rv, rv);
   rv = channel->SetAppURI(aUri);
   NS_ENSURE_SUCCESS(rv, rv);
   rv = channel->SetOriginalURI(aUri);
   NS_ENSURE_SUCCESS(rv, rv);
   channel.forget(aResult);
   return NS_OK;
 }
 NS_IMETHODIMP
 AppProtocolHandler::AllowPort(int32_t aPort, const char *aScheme, bool *aRetval)
 {
   // No port allowed for this scheme.
   *aRetval = false;
   return NS_OK;
 }

The Tor Browser / annotate

netwerk/protocol/app/AppProtocolHandler.cpp@7e26c7da4463 (annotated)

netwerk/protocol/app/AppProtocolHandler.cpp