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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /netwerk/dns/DNSRequestParent.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'netwerk/dns/DNSRequestParent.cpp')
-rw-r--r--netwerk/dns/DNSRequestParent.cpp132
1 files changed, 132 insertions, 0 deletions
diff --git a/netwerk/dns/DNSRequestParent.cpp b/netwerk/dns/DNSRequestParent.cpp
new file mode 100644
index 000000000..a5c95a812
--- /dev/null
+++ b/netwerk/dns/DNSRequestParent.cpp
@@ -0,0 +1,132 @@
+/* -*- 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()
+ : mFlags(0)
+ , mIPCClosed(false)
+{
+
+}
+
+DNSRequestParent::~DNSRequestParent()
+{
+
+}
+
+void
+DNSRequestParent::DoAsyncResolve(const nsACString &hostname, uint32_t flags,
+ const nsACString &networkInterface)
+{
+ 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->AsyncResolveExtended(hostname, flags, networkInterface, this,
+ mainThread, getter_AddRefs(unused));
+ }
+
+ if (NS_FAILED(rv) && !mIPCClosed) {
+ mIPCClosed = true;
+ Unused << SendLookupCompleted(DNSRequestResponse(rv));
+ }
+}
+
+bool
+DNSRequestParent::RecvCancelDNSRequest(const nsCString& hostName,
+ const uint32_t& flags,
+ const nsCString& networkInterface,
+ const nsresult& reason)
+{
+ nsresult rv;
+ nsCOMPtr<nsIDNSService> dns = do_GetService(NS_DNSSERVICE_CONTRACTID, &rv);
+ if (NS_SUCCEEDED(rv)) {
+ rv = dns->CancelAsyncResolveExtended(hostName, flags, networkInterface,
+ this, reason);
+ }
+ return true;
+}
+
+bool
+DNSRequestParent::Recv__delete__()
+{
+ mIPCClosed = true;
+ return true;
+}
+
+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_ISUPPORTS(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 << SendLookupCompleted(DNSRequestResponse(DNSRecord(cname, array)));
+ } else {
+ Unused << SendLookupCompleted(DNSRequestResponse(status));
+ }
+
+ mIPCClosed = true;
+ return NS_OK;
+}
+
+
+
+} // namespace net
+} // namespace mozilla