/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set sw=2 ts=8 et 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/net/DNSRequestParent.h"
#include "nsIDNSService.h"
#include "nsNetCID.h"
#include "nsThreadUtils.h"
#include "nsIServiceManager.h"
#include "nsICancelable.h"
#include "nsIDNSRecord.h"
#include "nsHostResolver.h"
#include "mozilla/unused.h"
using namespace mozilla::ipc;
namespace mozilla {
namespace net {
DNSRequestParent::DNSRequestParent()
: mIPCClosed(false)
{
}
DNSRequestParent::~DNSRequestParent()
{
}
void
DNSRequestParent::DoAsyncResolve(const nsACString &hostname, uint32_t flags)
{
nsresult rv;
mFlags = flags;
nsCOMPtr<nsIDNSService> dns = do_GetService(NS_DNSSERVICE_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIThread> mainThread = do_GetMainThread();
nsCOMPtr<nsICancelable> unused;
rv = dns->AsyncResolve(hostname, flags, this, mainThread,
getter_AddRefs(unused));
}
if (NS_FAILED(rv) && !mIPCClosed) {
unused << Send__delete__(this, DNSRequestResponse(rv));
}
}
void
DNSRequestParent::ActorDestroy(ActorDestroyReason why)
{
// We may still have refcount>0 if DNS hasn't called our OnLookupComplete
// yet, but child process has crashed. We must not send any more msgs
// to child, or IPDL will kill chrome process, too.
mIPCClosed = true;
}
//-----------------------------------------------------------------------------
// DNSRequestParent::nsISupports
//-----------------------------------------------------------------------------
NS_IMPL_ISUPPORTS1(DNSRequestParent,
nsIDNSListener)
//-----------------------------------------------------------------------------
// nsIDNSListener functions
//-----------------------------------------------------------------------------
NS_IMETHODIMP
DNSRequestParent::OnLookupComplete(nsICancelable *request,
nsIDNSRecord *rec,
nsresult status)
{
if (mIPCClosed) {
// nothing to do: child probably crashed
return NS_OK;
}
if (NS_SUCCEEDED(status)) {
MOZ_ASSERT(rec);
nsAutoCString cname;
if (mFlags & nsHostResolver::RES_CANON_NAME) {
rec->GetCanonicalName(cname);
}
// Get IP addresses for hostname (use port 80 as dummy value for NetAddr)
NetAddrArray array;
NetAddr addr;
while (NS_SUCCEEDED(rec->GetNextAddr(80, &addr))) {
array.AppendElement(addr);
}
unused << Send__delete__(this, DNSRequestResponse(DNSRecord(cname, array)));
} else {
unused << Send__delete__(this, DNSRequestResponse(status));
}
return NS_OK;
}
}} // mozilla::net