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