зеркало из https://github.com/mozilla/gecko-dev.git
83 строки
2.6 KiB
C++
83 строки
2.6 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 "MMPrinter.h"
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#include "jsapi.h"
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#include "nsJSUtils.h"
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#include "Logging.h"
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#include "mozilla/Bootstrap.h"
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#include "mozilla/dom/ipc/StructuredCloneData.h"
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#include "mozilla/dom/ScriptSettings.h"
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#include "mozilla/ErrorResult.h"
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#include "nsFrameMessageManager.h"
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namespace mozilla {
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namespace dom {
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LazyLogModule MMPrinter::sMMLog("MessageManager");
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/* static */
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void MMPrinter::PrintImpl(char const* aLocation, const nsAString& aMsg,
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ClonedMessageData const& aData) {
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NS_ConvertUTF16toUTF8 charMsg(aMsg);
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/*
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* The topic will be skipped if the topic name appears anywhere as a substring
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* of the filter.
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*
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* Example:
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* MOZ_LOG_MESSAGEMANAGER_SKIP="foobar|extension"
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* Will match the topics 'foobar', 'foo', 'bar', and 'ten' (even though
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* you may not have intended to match the latter three) and it will not match
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* the topics 'extensionresult' or 'Foo'.
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*/
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char* mmSkipLog = PR_GetEnv("MOZ_LOG_MESSAGEMANAGER_SKIP");
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if (mmSkipLog && strstr(mmSkipLog, charMsg.get())) {
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return;
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}
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MOZ_LOG(MMPrinter::sMMLog, LogLevel::Debug,
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("%s Message: %s in process type: %s", aLocation, charMsg.get(),
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XRE_GetProcessTypeString()));
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if (!MOZ_LOG_TEST(sMMLog, LogLevel::Verbose)) {
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return;
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}
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ErrorResult rv;
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AutoJSAPI jsapi;
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// We're using this context to deserialize, stringify, and print a message
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// manager message here. Since the messages are always sent from and to system
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// scopes, we need to do this in a system scope, or attempting to deserialize
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// certain privileged objects will fail.
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MOZ_ALWAYS_TRUE(jsapi.Init(xpc::PrivilegedJunkScope()));
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JSContext* cx = jsapi.cx();
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ipc::StructuredCloneData data;
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ipc::UnpackClonedMessageDataForChild(aData, data);
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/* Read original StructuredCloneData. */
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JS::RootedValue scdContent(cx);
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data.Read(cx, &scdContent, rv);
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if (NS_WARN_IF(rv.Failed())) {
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rv.SuppressException();
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return;
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}
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JS::RootedString unevalObj(cx, JS_ValueToSource(cx, scdContent));
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nsAutoJSString srcString;
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if (!srcString.init(cx, unevalObj)) return;
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MOZ_LOG(MMPrinter::sMMLog, LogLevel::Verbose,
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(" %s", NS_ConvertUTF16toUTF8(srcString).get()));
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}
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} // namespace dom
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} // namespace mozilla
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