From 2aa4a82499d4becd2284cdb482213d541b8804dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 16:29:10 +0200 Subject: Adding upstream version 86.0.1. Signed-off-by: Daniel Baumann --- dom/ipc/MMPrinter.cpp | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 dom/ipc/MMPrinter.cpp (limited to 'dom/ipc/MMPrinter.cpp') diff --git a/dom/ipc/MMPrinter.cpp b/dom/ipc/MMPrinter.cpp new file mode 100644 index 0000000000..9a18ec657d --- /dev/null +++ b/dom/ipc/MMPrinter.cpp @@ -0,0 +1,81 @@ +/* -*- 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 "MMPrinter.h" + +#include "jsapi.h" +#include "nsJSUtils.h" +#include "Logging.h" +#include "mozilla/Bootstrap.h" +#include "mozilla/dom/ipc/StructuredCloneData.h" +#include "mozilla/dom/ScriptSettings.h" +#include "mozilla/ErrorResult.h" +#include "nsFrameMessageManager.h" +#include "prenv.h" + +namespace mozilla::dom { + +LazyLogModule MMPrinter::sMMLog("MessageManager"); + +/* static */ +void MMPrinter::PrintImpl(char const* aLocation, const nsAString& aMsg, + ClonedMessageData const& aData) { + NS_ConvertUTF16toUTF8 charMsg(aMsg); + + /* + * The topic will be skipped if the topic name appears anywhere as a substring + * of the filter. + * + * Example: + * MOZ_LOG_MESSAGEMANAGER_SKIP="foobar|extension" + * Will match the topics 'foobar', 'foo', 'bar', and 'ten' (even though + * you may not have intended to match the latter three) and it will not match + * the topics 'extensionresult' or 'Foo'. + */ + char* mmSkipLog = PR_GetEnv("MOZ_LOG_MESSAGEMANAGER_SKIP"); + + if (mmSkipLog && strstr(mmSkipLog, charMsg.get())) { + return; + } + + MOZ_LOG(MMPrinter::sMMLog, LogLevel::Debug, + ("%s Message: %s in process type: %s", aLocation, charMsg.get(), + XRE_GetProcessTypeString())); + + if (!MOZ_LOG_TEST(sMMLog, LogLevel::Verbose)) { + return; + } + + ErrorResult rv; + + AutoJSAPI jsapi; + // We're using this context to deserialize, stringify, and print a message + // manager message here. Since the messages are always sent from and to system + // scopes, we need to do this in a system scope, or attempting to deserialize + // certain privileged objects will fail. + MOZ_ALWAYS_TRUE(jsapi.Init(xpc::PrivilegedJunkScope())); + JSContext* cx = jsapi.cx(); + + ipc::StructuredCloneData data; + ipc::UnpackClonedMessageDataForChild(aData, data); + + /* Read original StructuredCloneData. */ + JS::RootedValue scdContent(cx); + data.Read(cx, &scdContent, rv); + if (NS_WARN_IF(rv.Failed())) { + rv.SuppressException(); + return; + } + + JS::RootedString unevalObj(cx, JS_ValueToSource(cx, scdContent)); + nsAutoJSString srcString; + if (!srcString.init(cx, unevalObj)) return; + + MOZ_LOG(MMPrinter::sMMLog, LogLevel::Verbose, + (" %s", NS_ConvertUTF16toUTF8(srcString).get())); +} + +} // namespace mozilla::dom -- cgit v1.2.3