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/* 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 https://mozilla.org/MPL/2.0/. */
#include "mozilla/ContentClassifierEngine.h"
#include "ContentClassifierService.h"
#include "nsIEffectiveTLDService.h"
#include "mozilla/Components.h"
#include "mozIThirdPartyUtil.h"
namespace mozilla {
ContentClassifierResult ContentClassifierEngine::CheckNetworkRequest(
const ContentClassifierRequest& aRequest) {
if (!mEngine || !sInitializedETLDService) {
return ContentClassifierResult(NS_ERROR_NOT_INITIALIZED);
}
if (!aRequest.mValid) {
return ContentClassifierResult(NS_ERROR_INVALID_ARG);
}
// We perform no classification on third-party resources for webcompat.
// This early-return saves CPU cycles.
if (!aRequest.mThirdParty) {
return ContentClassifierResult(NS_OK);
}
bool matched = false;
bool important = false;
nsCString exception;
nsresult rv = content_classifier_engine_check_network_request_preparsed(
mEngine, &aRequest.mUrl, &aRequest.mSchemelessSite,
&aRequest.mSourceSchemelessSite, &aRequest.mRequestType,
aRequest.mThirdParty, &matched, &important, &exception);
return ContentClassifierResult(matched, important, !exception.IsEmpty(), rv);
}
void ContentClassifierResult::Accumulate(
const ContentClassifierResult& aOther) {
if (NS_FAILED(aOther.mEngineResult)) {
return;
}
if (this->mImportant) {
return;
}
if (aOther.mMatched || aOther.mException) {
this->mMatched = aOther.mMatched;
this->mException = aOther.mException;
this->mImportant = aOther.mImportant;
}
}
ContentClassifierRequest::ContentClassifierRequest(nsIChannel* aChannel)
: mThirdParty(true), mValid(false) {
nsCOMPtr<nsIURI> uri;
nsresult rv = aChannel->GetURI(getter_AddRefs(uri));
if (NS_FAILED(rv)) return;
rv = uri->GetSpec(mUrl);
if (NS_FAILED(rv)) return;
nsCString host;
rv = uri->GetHost(host);
if (NS_FAILED(rv)) return;
nsCOMPtr<nsIEffectiveTLDService> eTLDService =
components::EffectiveTLD::Service();
if (!eTLDService) return;
rv = eTLDService->GetSchemelessSiteFromHost(host, mSchemelessSite);
if (NS_FAILED(rv)) return;
nsCOMPtr<nsILoadInfo> loadInfo;
rv = aChannel->GetLoadInfo(getter_AddRefs(loadInfo));
if (NS_FAILED(rv)) return;
nsCOMPtr<nsIPrincipal> loadingPrincipal = loadInfo->GetLoadingPrincipal();
if (loadingPrincipal) {
rv = loadingPrincipal->GetBaseDomain(mSourceSchemelessSite);
if (NS_FAILED(rv)) return;
}
ExtContentPolicyType contentPolicyType =
loadInfo->GetExternalContentPolicyType();
switch (contentPolicyType) {
case ExtContentPolicyType::TYPE_CSP_REPORT:
mRequestType.AssignLiteral("csp_report");
break;
case ExtContentPolicyType::TYPE_DOCUMENT:
mRequestType.AssignLiteral("document");
break;
case ExtContentPolicyType::TYPE_FONT:
mRequestType.AssignLiteral("font");
break;
case ExtContentPolicyType::TYPE_IMAGE:
case ExtContentPolicyType::TYPE_IMAGESET:
mRequestType.AssignLiteral("image");
break;
case ExtContentPolicyType::TYPE_MEDIA:
mRequestType.AssignLiteral("media");
break;
case ExtContentPolicyType::TYPE_OBJECT:
mRequestType.AssignLiteral("object");
break;
case ExtContentPolicyType::TYPE_BEACON:
case ExtContentPolicyType::TYPE_PING:
mRequestType.AssignLiteral("ping");
break;
case ExtContentPolicyType::TYPE_SCRIPT:
mRequestType.AssignLiteral("script");
break;
case ExtContentPolicyType::TYPE_STYLESHEET:
mRequestType.AssignLiteral("stylesheet");
break;
case ExtContentPolicyType::TYPE_SUBDOCUMENT:
mRequestType.AssignLiteral("subdocument");
break;
case ExtContentPolicyType::TYPE_WEBSOCKET:
mRequestType.AssignLiteral("websocket");
break;
case ExtContentPolicyType::TYPE_XMLHTTPREQUEST:
mRequestType.AssignLiteral("xmlhttprequest");
break;
default:
mRequestType.AssignLiteral("other");
break;
}
nsCOMPtr<mozIThirdPartyUtil> thirdPartyUtil =
components::ThirdPartyUtil::Service();
if (!thirdPartyUtil) {
return;
}
rv = thirdPartyUtil->IsThirdPartyChannel(aChannel, nullptr, &mThirdParty);
if (NS_FAILED(rv)) {
mThirdParty = true;
}
mValid = true;
}
} // namespace mozilla
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