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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
#ifndef mozilla_ContentAnalysisIPCTypes_h
#define mozilla_ContentAnalysisIPCTypes_h
#include "ipc/EnumSerializer.h"
#include "ipc/IPCMessageUtilsSpecializations.h"
#include "js/PropertyAndElement.h"
#include "mozilla/Variant.h"
#include "nsIContentAnalysis.h"
namespace mozilla {
namespace contentanalysis {
enum class NoContentAnalysisResult : uint8_t {
ALLOW_DUE_TO_CONTENT_ANALYSIS_NOT_ACTIVE,
ALLOW_DUE_TO_CONTEXT_EXEMPT_FROM_CONTENT_ANALYSIS,
ALLOW_DUE_TO_COULD_NOT_GET_DATA,
DENY_DUE_TO_CANCELED,
DENY_DUE_TO_INVALID_JSON_RESPONSE,
DENY_DUE_TO_OTHER_ERROR,
LAST_VALUE
};
class ContentAnalysisResult : public nsIContentAnalysisResult {
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSICONTENTANALYSISRESULT
public:
static RefPtr<ContentAnalysisResult> FromAction(
nsIContentAnalysisResponse::Action aAction) {
auto result =
RefPtr<ContentAnalysisResult>(new ContentAnalysisResult(aAction));
return result;
}
static RefPtr<ContentAnalysisResult> FromNoResult(
NoContentAnalysisResult aResult) {
auto result =
RefPtr<ContentAnalysisResult>(new ContentAnalysisResult(aResult));
return result;
}
static RefPtr<ContentAnalysisResult> FromJSONResponse(
const JS::Handle<JS::Value>& aValue, JSContext* aCx) {
if (aValue.isObject()) {
auto* obj = aValue.toObjectOrNull();
JS::Handle<JSObject*> handle =
JS::Handle<JSObject*>::fromMarkedLocation(&obj);
JS::Rooted<JS::Value> actionValue(aCx);
if (JS_GetProperty(aCx, handle, "action", &actionValue)) {
if (actionValue.isNumber()) {
double actionNumber = actionValue.toNumber();
return FromAction(
static_cast<nsIContentAnalysisResponse::Action>(actionNumber));
}
}
}
return FromNoResult(
NoContentAnalysisResult::DENY_DUE_TO_INVALID_JSON_RESPONSE);
}
static RefPtr<ContentAnalysisResult> FromJSONContentAnalysisResponse(
const JS::Handle<JS::Value>& aValue, JSContext* aCx) {
if (aValue.isObject()) {
auto* obj = aValue.toObjectOrNull();
JS::Handle<JSObject*> handle =
JS::Handle<JSObject*>::fromMarkedLocation(&obj);
JS::Rooted<JS::Value> shouldAllowValue(aCx);
if (JS_GetProperty(aCx, handle, "shouldAllowContent",
&shouldAllowValue)) {
if (shouldAllowValue.isTrue()) {
return FromAction(nsIContentAnalysisResponse::Action::eAllow);
} else if (shouldAllowValue.isFalse()) {
return FromAction(nsIContentAnalysisResponse::Action::eBlock);
} else {
return FromNoResult(NoContentAnalysisResult::DENY_DUE_TO_OTHER_ERROR);
}
}
}
return FromNoResult(
NoContentAnalysisResult::DENY_DUE_TO_INVALID_JSON_RESPONSE);
}
static RefPtr<ContentAnalysisResult> FromContentAnalysisResponse(
nsIContentAnalysisResponse* aResponse) {
bool shouldAllowContent = false;
DebugOnly<nsresult> rv =
aResponse->GetShouldAllowContent(&shouldAllowContent);
MOZ_ASSERT(NS_SUCCEEDED(rv));
if (shouldAllowContent) {
return FromAction(nsIContentAnalysisResponse::Action::eAllow);
} else {
return FromAction(nsIContentAnalysisResponse::Action::eBlock);
}
}
private:
explicit ContentAnalysisResult(nsIContentAnalysisResponse::Action aAction)
: mValue(aAction) {}
explicit ContentAnalysisResult(NoContentAnalysisResult aResult)
: mValue(aResult) {}
virtual ~ContentAnalysisResult() = default;
Variant<nsIContentAnalysisResponse::Action, NoContentAnalysisResult> mValue;
friend struct IPC::ParamTraits<ContentAnalysisResult>;
friend struct IPC::ParamTraits<ContentAnalysisResult*>;
friend struct IPC::ParamTraits<RefPtr<ContentAnalysisResult>>;
};
} // namespace contentanalysis
} // namespace mozilla
namespace IPC {
template <>
struct ParamTraits<mozilla::contentanalysis::NoContentAnalysisResult>
: public ContiguousEnumSerializer<
mozilla::contentanalysis::NoContentAnalysisResult,
static_cast<mozilla::contentanalysis::NoContentAnalysisResult>(0),
mozilla::contentanalysis::NoContentAnalysisResult::LAST_VALUE> {};
template <>
struct ParamTraits<nsIContentAnalysisResponse::Action>
: public ContiguousEnumSerializerInclusive<
nsIContentAnalysisResponse::Action,
nsIContentAnalysisResponse::Action::eUnspecified,
nsIContentAnalysisResponse::Action::eCanceled> {};
template <>
struct ParamTraits<mozilla::contentanalysis::ContentAnalysisResult> {
typedef mozilla::contentanalysis::ContentAnalysisResult paramType;
static void Write(MessageWriter* aWriter, const paramType& aParam) {
WriteParam(aWriter, aParam.mValue);
}
static bool Read(MessageReader* aReader, paramType* aResult) {
return ReadParam(aReader, &(aResult->mValue));
}
};
template <>
struct ParamTraits<mozilla::contentanalysis::ContentAnalysisResult*> {
typedef mozilla::contentanalysis::ContentAnalysisResult paramType;
static void Write(MessageWriter* aWriter, const paramType* aParam) {
if (!aParam) {
WriteParam(aWriter, true);
return;
}
WriteParam(aWriter, false);
WriteParam(aWriter, aParam->mValue);
}
static bool Read(MessageReader* aReader, RefPtr<paramType>* aResult) {
bool isNull = false;
if (!ReadParam(aReader, &isNull)) {
return false;
}
if (isNull) {
*aResult = nullptr;
return true;
}
*aResult = mozilla::contentanalysis::ContentAnalysisResult::FromNoResult(
mozilla::contentanalysis::NoContentAnalysisResult::
DENY_DUE_TO_OTHER_ERROR);
return ReadParam(aReader, &((*aResult)->mValue));
}
};
} // namespace IPC
#endif // mozilla_ContentAnalysisIPCTypes_h
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