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daa17adb9e
In origin telemetry, we want to record the matching statistic of each entry in our tracking tables. To identify which entry a given URL matches, it needs the hash value that matches the safe browsing database. This patch passes the hash value to ProcessChannel so Features can obtain the information and pass it. Note that it is possible that an URL may find multiple matches. If an URL matches hash A of list 1 and hash B of list 2, the parameter in ProcessChannel looks like: aList = [list 1, list2] aHashes = [hash A, hash B] Differential Revision: https://phabricator.services.mozilla.com/D28789 --HG-- extra : moz-landing-system : lando
183 lines
5.7 KiB
C++
183 lines
5.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "URLClassifierParent.h"
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#include "nsComponentManagerUtils.h"
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#include "nsIUrlClassifierFeature.h"
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#include "nsNetCID.h"
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#include "mozilla/net/UrlClassifierFeatureResult.h"
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#include "mozilla/Unused.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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/////////////////////////////////////////////////////////////////////
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// URLClassifierParent.
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NS_IMPL_ISUPPORTS(URLClassifierParent, nsIURIClassifierCallback)
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mozilla::ipc::IPCResult URLClassifierParent::StartClassify(
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nsIPrincipal* aPrincipal, bool* aSuccess) {
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*aSuccess = false;
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nsresult rv = NS_OK;
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// Note that in safe mode, the URL classifier service isn't available, so we
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// should handle the service not being present gracefully.
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nsCOMPtr<nsIURIClassifier> uriClassifier =
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do_GetService(NS_URICLASSIFIERSERVICE_CONTRACTID, &rv);
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if (NS_SUCCEEDED(rv)) {
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rv = uriClassifier->Classify(aPrincipal, nullptr, this, aSuccess);
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}
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if (NS_FAILED(rv) || !*aSuccess) {
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// We treat the case where we fail to classify and the case where the
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// classifier returns successfully but doesn't perform a lookup as the
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// classification not yielding any results, so we just kill the child actor
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// without ever calling out callback in both cases.
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// This means that code using this in the child process will only get a hit
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// on its callback if some classification actually happens.
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*aSuccess = false;
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ClassificationFailed();
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}
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return IPC_OK();
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}
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/////////////////////////////////////////////////////////////////////
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// URLClassifierLocalParent.
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namespace {
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// This class implements a nsIUrlClassifierFeature on the parent side, starting
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// from an IPC data struct.
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class IPCFeature final : public nsIUrlClassifierFeature {
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public:
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NS_DECL_ISUPPORTS
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IPCFeature(nsIURI* aURI, const IPCURLClassifierFeature& aFeature)
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: mURI(aURI), mIPCFeature(aFeature) {}
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NS_IMETHOD
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GetName(nsACString& aName) override {
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aName = mIPCFeature.featureName();
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return NS_OK;
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}
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NS_IMETHOD
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GetTables(nsIUrlClassifierFeature::listType,
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nsTArray<nsCString>& aTables) override {
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aTables.AppendElements(mIPCFeature.tables());
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return NS_OK;
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}
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NS_IMETHOD
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HasTable(const nsACString& aTable, nsIUrlClassifierFeature::listType,
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bool* aResult) override {
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NS_ENSURE_ARG_POINTER(aResult);
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*aResult = mIPCFeature.tables().Contains(aTable);
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return NS_OK;
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}
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NS_IMETHOD
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HasHostInPreferences(const nsACString& aHost,
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nsIUrlClassifierFeature::listType,
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nsACString& aTableName, bool* aResult) override {
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NS_ENSURE_ARG_POINTER(aResult);
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*aResult = false;
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return NS_OK;
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}
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NS_IMETHOD
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GetSkipHostList(nsACString& aList) override {
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aList = mIPCFeature.skipHostList();
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return NS_OK;
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}
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NS_IMETHOD
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ProcessChannel(nsIChannel* aChannel, const nsTArray<nsCString>& aList,
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const nsTArray<nsCString>& aHashes,
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bool* aShouldContinue) override {
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NS_ENSURE_ARG_POINTER(aShouldContinue);
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*aShouldContinue = true;
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// Nothing to do here.
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return NS_OK;
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}
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NS_IMETHOD
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GetURIByListType(nsIChannel* aChannel,
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nsIUrlClassifierFeature::listType aListType,
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nsIURI** aURI) override {
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NS_ENSURE_ARG_POINTER(aURI);
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// This method should not be called, but we have a URI, let's return it.
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nsCOMPtr<nsIURI> uri = mURI;
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uri.forget(aURI);
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return NS_OK;
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}
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private:
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~IPCFeature() = default;
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nsCOMPtr<nsIURI> mURI;
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IPCURLClassifierFeature mIPCFeature;
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};
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NS_IMPL_ISUPPORTS(IPCFeature, nsIUrlClassifierFeature)
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} // namespace
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NS_IMPL_ISUPPORTS(URLClassifierLocalParent, nsIUrlClassifierFeatureCallback)
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mozilla::ipc::IPCResult URLClassifierLocalParent::StartClassify(
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nsIURI* aURI, const nsTArray<IPCURLClassifierFeature>& aFeatures) {
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MOZ_ASSERT(aURI);
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nsresult rv = NS_OK;
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// Note that in safe mode, the URL classifier service isn't available, so we
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// should handle the service not being present gracefully.
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nsCOMPtr<nsIURIClassifier> uriClassifier =
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do_GetService(NS_URICLASSIFIERSERVICE_CONTRACTID, &rv);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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OnClassifyComplete(nsTArray<RefPtr<nsIUrlClassifierFeatureResult>>());
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return IPC_OK();
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}
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nsTArray<RefPtr<nsIUrlClassifierFeature>> features;
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for (const IPCURLClassifierFeature& feature : aFeatures) {
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features.AppendElement(new IPCFeature(aURI, feature));
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}
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// Doesn't matter if we pass blacklist, whitelist or any other list.
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// IPCFeature returns always the same values.
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rv = uriClassifier->AsyncClassifyLocalWithFeatures(
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aURI, features, nsIUrlClassifierFeature::blacklist, this);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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OnClassifyComplete(nsTArray<RefPtr<nsIUrlClassifierFeatureResult>>());
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return IPC_OK();
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}
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return IPC_OK();
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}
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NS_IMETHODIMP
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URLClassifierLocalParent::OnClassifyComplete(
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const nsTArray<RefPtr<nsIUrlClassifierFeatureResult>>& aResults) {
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if (mIPCOpen) {
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nsTArray<URLClassifierLocalResult> ipcResults;
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for (nsIUrlClassifierFeatureResult* result : aResults) {
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URLClassifierLocalResult* ipcResult = ipcResults.AppendElement();
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net::UrlClassifierFeatureResult* r =
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static_cast<net::UrlClassifierFeatureResult*>(result);
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ipcResult->uri() = r->URI();
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r->Feature()->GetName(ipcResult->featureName());
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ipcResult->matchingList() = r->List();
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}
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Unused << Send__delete__(this, ipcResults);
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}
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return NS_OK;
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}
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