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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/process_singleton.h"
#include <Carbon/Carbon.h>
#include <CoreServices/CoreServices.h>
#include "base/mac/scoped_aedesc.h"
namespace {
// Extracts the URL from |event| and forwards it to an already-running Chromium
// process.
OSErr HandleGURLEvent(const AppleEvent* event,
AppleEvent* reply,
SRefCon handler_refcon) {
pid_t forwarding_pid = *(reinterpret_cast<pid_t*>(handler_refcon));
base::mac::ScopedAEDesc<> other_process_pid;
// Create an address descriptor for the running process.
AECreateDesc(typeKernelProcessID, &forwarding_pid, sizeof(forwarding_pid),
other_process_pid.OutPointer());
OSErr status = noErr;
base::mac::ScopedAEDesc<> event_copy;
status = AECreateAppleEvent(kInternetEventClass, kAEGetURL, other_process_pid,
kAutoGenerateReturnID, kAnyTransactionID,
event_copy.OutPointer());
if (status != noErr)
return status;
base::mac::ScopedAEDesc<> url;
// A GURL event's direct object is the URL as a descriptor with type
// TEXT.
status =
AEGetParamDesc(event, keyDirectObject, typeWildCard, url.OutPointer());
if (status != noErr)
return status;
status = AEPutParamDesc(event_copy.OutPointer(), keyDirectObject, url);
if (status != noErr)
return status;
status = AESendMessage(event_copy, reply, kAENoReply, kNoTimeOut);
if (status != noErr)
return status;
// Activate the running instance
base::mac::ScopedAEDesc<> activate_event;
status = AECreateAppleEvent(kAEMiscStandards, kAEActivate, other_process_pid,
kAutoGenerateReturnID, kAnyTransactionID,
activate_event.OutPointer());
if (status != noErr)
return status;
return AESendMessage(activate_event, reply, kAENoReply, kNoTimeOut);
}
} // namespace
bool ProcessSingleton::WaitForAndForwardOpenURLEvent(
pid_t event_destination_pid) {
AEEventHandlerProcPtr handler = NewAEEventHandlerUPP(HandleGURLEvent);
if (AEInstallEventHandler(kInternetEventClass, kAEGetURL, handler,
&event_destination_pid, false) != noErr) {
DisposeAEEventHandlerUPP(handler);
return false;
}
bool result = false;
const EventTypeSpec spec = {kEventClassAppleEvent, kEventAppleEvent};
EventRef event_ref;
if (ReceiveNextEvent(1, &spec, kEventDurationNanosecond, true, &event_ref) ==
noErr) {
OSStatus processed = AEProcessEvent(event_ref);
ReleaseEvent(event_ref);
result = processed == noErr;
}
AERemoveEventHandler(kInternetEventClass, kAEGetURL, handler, false);
DisposeAEEventHandlerUPP(handler);
return result;
}
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