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/* -*- 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 "mozilla/net/DNSRequestChild.h"
#include "nsIDNSService.h"
#include "nsNetCID.h"
#include "nsThreadUtils.h"
#include "nsICancelable.h"
#include "nsIDNSRecord.h"
#include "nsHostResolver.h"
#include "mozilla/Unused.h"
#include "DNSResolverInfo.h"
using namespace mozilla::ipc;
namespace mozilla {
namespace net {
DNSRequestHandler::DNSRequestHandler() : mFlags(0) {}
//-----------------------------------------------------------------------------
// DNSRequestHandler::nsISupports
//-----------------------------------------------------------------------------
NS_IMPL_ISUPPORTS(DNSRequestHandler, nsIDNSListener)
static void SendLookupCompletedHelper(DNSRequestActor* aActor,
const DNSRequestResponse& aReply) {
if (DNSRequestParent* parent = aActor->AsDNSRequestParent()) {
Unused << parent->SendLookupCompleted(aReply);
} else if (DNSRequestChild* child = aActor->AsDNSRequestChild()) {
Unused << child->SendLookupCompleted(aReply);
}
}
void DNSRequestHandler::DoAsyncResolve(const nsACString& hostname,
const nsACString& trrServer,
uint16_t type,
const OriginAttributes& originAttributes,
uint32_t flags) {
nsresult rv;
mFlags = flags;
nsCOMPtr<nsIDNSService> dns = do_GetService(NS_DNSSERVICE_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIEventTarget> main = GetMainThreadEventTarget();
nsCOMPtr<nsICancelable> unused;
RefPtr<DNSResolverInfo> res;
if (!trrServer.IsEmpty()) {
res = new DNSResolverInfo(trrServer);
}
rv = dns->AsyncResolveNative(
hostname, static_cast<nsIDNSService::ResolveType>(type), flags, res,
this, main, originAttributes, getter_AddRefs(unused));
}
if (NS_FAILED(rv) && mIPCActor->CanSend()) {
SendLookupCompletedHelper(mIPCActor, DNSRequestResponse(rv));
}
}
void DNSRequestHandler::OnRecvCancelDNSRequest(
const nsCString& hostName, const nsCString& aTrrServer,
const uint16_t& type, const OriginAttributes& originAttributes,
const uint32_t& flags, const nsresult& reason) {
nsresult rv;
nsCOMPtr<nsIDNSService> dns = do_GetService(NS_DNSSERVICE_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
RefPtr<DNSResolverInfo> res;
if (!aTrrServer.IsEmpty()) {
res = new DNSResolverInfo(aTrrServer);
}
rv = dns->CancelAsyncResolveNative(
hostName, static_cast<nsIDNSService::ResolveType>(type), flags, res,
this, reason, originAttributes);
}
}
bool DNSRequestHandler::OnRecvLookupCompleted(const DNSRequestResponse& reply) {
return true;
}
//-----------------------------------------------------------------------------
// nsIDNSListener functions
//-----------------------------------------------------------------------------
NS_IMETHODIMP
DNSRequestHandler::OnLookupComplete(nsICancelable* request,
nsIDNSRecord* aRecord, nsresult status) {
if (!mIPCActor || !mIPCActor->CanSend()) {
// nothing to do: child probably crashed
return NS_OK;
}
if (NS_SUCCEEDED(status)) {
MOZ_ASSERT(aRecord);
nsCOMPtr<nsIDNSByTypeRecord> byTypeRec = do_QueryInterface(aRecord);
if (byTypeRec) {
IPCTypeRecord result;
byTypeRec->GetResults(&result.mData);
SendLookupCompletedHelper(mIPCActor, DNSRequestResponse(result));
return NS_OK;
}
nsCOMPtr<nsIDNSAddrRecord> rec = do_QueryInterface(aRecord);
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)
nsTArray<NetAddr> array;
NetAddr addr;
while (NS_SUCCEEDED(rec->GetNextAddr(80, &addr))) {
array.AppendElement(addr);
}
double trrFetchDuration;
rec->GetTrrFetchDuration(&trrFetchDuration);
double trrFetchDurationNetworkOnly;
rec->GetTrrFetchDurationNetworkOnly(&trrFetchDurationNetworkOnly);
bool isTRR = false;
rec->IsTRR(&isTRR);
uint32_t effectiveTRRMode = 0;
rec->GetEffectiveTRRMode(&effectiveTRRMode);
SendLookupCompletedHelper(
mIPCActor, DNSRequestResponse(DNSRecord(cname, array, trrFetchDuration,
trrFetchDurationNetworkOnly,
isTRR, effectiveTRRMode)));
} else {
SendLookupCompletedHelper(mIPCActor, DNSRequestResponse(status));
}
return NS_OK;
}
void DNSRequestHandler::OnIPCActorDestroy() { mIPCActor = nullptr; }
//-----------------------------------------------------------------------------
// DNSRequestParent functions
//-----------------------------------------------------------------------------
DNSRequestParent::DNSRequestParent(DNSRequestBase* aRequest)
: DNSRequestActor(aRequest) {
aRequest->SetIPCActor(this);
}
mozilla::ipc::IPCResult DNSRequestParent::RecvCancelDNSRequest(
const nsCString& hostName, const nsCString& trrServer, const uint16_t& type,
const OriginAttributes& originAttributes, const uint32_t& flags,
const nsresult& reason) {
mDNSRequest->OnRecvCancelDNSRequest(hostName, trrServer, type,
originAttributes, flags, reason);
return IPC_OK();
}
mozilla::ipc::IPCResult DNSRequestParent::RecvLookupCompleted(
const DNSRequestResponse& reply) {
return mDNSRequest->OnRecvLookupCompleted(reply) ? IPC_OK()
: IPC_FAIL_NO_REASON(this);
}
void DNSRequestParent::ActorDestroy(ActorDestroyReason) {
mDNSRequest->OnIPCActorDestroy();
mDNSRequest = nullptr;
}
} // namespace net
} // namespace mozilla
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