gecko-dev/dom/html/MediaError.cpp
Jeff Gilbert 5b753da289 Bug 1470325 - s/FooBinding/Foo_Binding/g - r=qdot
MozReview-Commit-ID: JtTcLL5OPF0
2018-06-26 17:05:01 -07:00

95 lines
2.8 KiB
C++

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