forked from mirrors/gecko-dev
85 lines
2.9 KiB
C++
85 lines
2.9 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 "mozilla/dom/MediaError.h"
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#include <string>
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#include <unordered_set>
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#include "mozilla/dom/Document.h"
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#include "mozilla/dom/MediaErrorBinding.h"
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#include "nsContentUtils.h"
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#include "nsIScriptError.h"
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#include "jsapi.h"
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#include "js/Warnings.h" // JS::WarnASCII
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namespace mozilla::dom {
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(MediaError, mParent)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(MediaError)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(MediaError)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(MediaError)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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MediaError::MediaError(HTMLMediaElement* aParent, uint16_t aCode,
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const nsACString& aMessage)
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: mParent(aParent), mCode(aCode), mMessage(aMessage) {}
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void MediaError::GetMessage(nsAString& aResult) const {
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// When fingerprinting resistance is enabled, only messages in this list
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// can be returned to content script.
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// FIXME: An unordered_set seems overkill for this.
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static const std::unordered_set<std::string> whitelist = {
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"404: Not Found"
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// TODO
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};
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const bool shouldBlank = whitelist.find(mMessage.get()) == whitelist.end();
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if (shouldBlank) {
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// Print a warning message to JavaScript console to alert developers of
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// a non-whitelisted error message.
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nsAutoCString message =
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nsLiteralCString(
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"This error message will be blank when "
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"privacy.resistFingerprinting = true."
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" If it is really necessary, please add it to the whitelist in"
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" MediaError::GetMessage: ") +
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mMessage;
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Document* ownerDoc = mParent->OwnerDoc();
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AutoJSAPI api;
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if (api.Init(ownerDoc->GetScopeObject())) {
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// We prefer this API because it can also print to our debug log and
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// try server's log viewer.
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JS::WarnASCII(api.cx(), "%s", message.get());
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} else {
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// If failed to use JS::WarnASCII, fall back to
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// nsContentUtils::ReportToConsoleNonLocalized, which can only print to
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// JavaScript console.
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nsContentUtils::ReportToConsoleNonLocalized(
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NS_ConvertASCIItoUTF16(message), nsIScriptError::warningFlag,
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"MediaError"_ns, ownerDoc);
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}
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if (!nsContentUtils::IsCallerChrome() &&
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ownerDoc->ShouldResistFingerprinting(RFPTarget::MediaError)) {
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aResult.Truncate();
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return;
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}
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}
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CopyUTF8toUTF16(mMessage, aResult);
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}
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JSObject* MediaError::WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return MediaError_Binding::Wrap(aCx, this, aGivenProto);
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}
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} // namespace mozilla::dom
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