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-rw-r--r--netwerk/dns/DNSRequestChild.cpp574
1 files changed, 574 insertions, 0 deletions
diff --git a/netwerk/dns/DNSRequestChild.cpp b/netwerk/dns/DNSRequestChild.cpp
new file mode 100644
index 0000000000..ec0f56b3f1
--- /dev/null
+++ b/netwerk/dns/DNSRequestChild.cpp
@@ -0,0 +1,574 @@
+/* -*- 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/dom/ContentChild.h"
+#include "mozilla/net/ChildDNSService.h"
+#include "mozilla/net/DNSByTypeRecord.h"
+#include "mozilla/net/DNSRequestChild.h"
+#include "mozilla/net/DNSRequestParent.h"
+#include "mozilla/net/NeckoChild.h"
+#include "mozilla/net/SocketProcessChild.h"
+#include "mozilla/SchedulerGroup.h"
+#include "mozilla/net/SocketProcessParent.h"
+#include "mozilla/Unused.h"
+#include "nsIDNSRecord.h"
+#include "nsIDNSByTypeRecord.h"
+#include "nsHostResolver.h"
+#include "nsIOService.h"
+#include "nsTArray.h"
+#include "nsNetAddr.h"
+#include "nsThreadUtils.h"
+
+using namespace mozilla::ipc;
+
+namespace mozilla {
+namespace net {
+
+void DNSRequestBase::SetIPCActor(DNSRequestActor* aActor) {
+ mIPCActor = aActor;
+}
+
+//-----------------------------------------------------------------------------
+// ChildDNSRecord:
+// A simple class to provide nsIDNSRecord on the child
+//-----------------------------------------------------------------------------
+
+class ChildDNSRecord : public nsIDNSAddrRecord {
+ public:
+ NS_DECL_THREADSAFE_ISUPPORTS
+ NS_DECL_NSIDNSRECORD
+ NS_DECL_NSIDNSADDRRECORD
+
+ ChildDNSRecord(const DNSRecord& reply, nsIDNSService::DNSFlags flags);
+
+ private:
+ virtual ~ChildDNSRecord() = default;
+
+ nsCString mCanonicalName;
+ nsTArray<NetAddr> mAddresses;
+ uint32_t mCurrent = 0; // addr iterator
+ nsIDNSService::DNSFlags mFlags = nsIDNSService::RESOLVE_DEFAULT_FLAGS;
+ double mTrrFetchDuration = 0;
+ double mTrrFetchDurationNetworkOnly = 0;
+ bool mIsTRR = false;
+ bool mResolvedInSocketProcess = false;
+ nsIRequest::TRRMode mEffectiveTRRMode = nsIRequest::TRR_DEFAULT_MODE;
+ nsITRRSkipReason::value mTRRSkipReason = nsITRRSkipReason::TRR_UNSET;
+ uint32_t mTTL = 0;
+};
+
+NS_IMPL_ISUPPORTS(ChildDNSRecord, nsIDNSRecord, nsIDNSAddrRecord)
+
+ChildDNSRecord::ChildDNSRecord(const DNSRecord& reply,
+ nsIDNSService::DNSFlags flags)
+ : mFlags(flags) {
+ mCanonicalName = reply.canonicalName();
+ mTrrFetchDuration = reply.trrFetchDuration();
+ mTrrFetchDurationNetworkOnly = reply.trrFetchDurationNetworkOnly();
+ mIsTRR = reply.isTRR();
+ // When ChildDNSRecord is created in parent process, we know this is case that
+ // DNS resolution is done in socket process.
+ mResolvedInSocketProcess = XRE_IsParentProcess();
+ mEffectiveTRRMode = reply.effectiveTRRMode();
+
+ // A shame IPDL gives us no way to grab ownership of array: so copy it.
+ const nsTArray<NetAddr>& addrs = reply.addrs();
+ mAddresses = addrs.Clone();
+ mTTL = reply.ttl();
+}
+
+//-----------------------------------------------------------------------------
+// ChildDNSRecord::nsIDNSAddrRecord
+//-----------------------------------------------------------------------------
+
+NS_IMETHODIMP
+ChildDNSRecord::GetCanonicalName(nsACString& result) {
+ if (!(mFlags & nsHostResolver::RES_CANON_NAME)) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ result = mCanonicalName;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ChildDNSRecord::IsTRR(bool* retval) {
+ *retval = mIsTRR;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ChildDNSRecord::ResolvedInSocketProcess(bool* retval) {
+ *retval = mResolvedInSocketProcess;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ChildDNSRecord::GetTrrFetchDuration(double* aTime) {
+ *aTime = mTrrFetchDuration;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ChildDNSRecord::GetTrrFetchDurationNetworkOnly(double* aTime) {
+ *aTime = mTrrFetchDurationNetworkOnly;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ChildDNSRecord::GetNextAddr(uint16_t port, NetAddr* addr) {
+ if (mCurrent >= mAddresses.Length()) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ memcpy(addr, &mAddresses[mCurrent++], sizeof(NetAddr));
+
+ // both Ipv4/6 use same bits for port, so safe to just use ipv4's field
+ addr->inet.port = htons(port);
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ChildDNSRecord::GetAddresses(nsTArray<NetAddr>& aAddressArray) {
+ aAddressArray = mAddresses.Clone();
+ return NS_OK;
+}
+
+// shamelessly copied from nsDNSRecord
+NS_IMETHODIMP
+ChildDNSRecord::GetScriptableNextAddr(uint16_t port, nsINetAddr** result) {
+ NetAddr addr;
+ nsresult rv = GetNextAddr(port, &addr);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ RefPtr<nsNetAddr> netaddr = new nsNetAddr(&addr);
+ netaddr.forget(result);
+
+ return NS_OK;
+}
+
+// also copied from nsDNSRecord
+NS_IMETHODIMP
+ChildDNSRecord::GetNextAddrAsString(nsACString& result) {
+ NetAddr addr;
+ nsresult rv = GetNextAddr(0, &addr);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ char buf[kIPv6CStrBufSize];
+ if (addr.ToStringBuffer(buf, sizeof(buf))) {
+ result.Assign(buf);
+ return NS_OK;
+ }
+ NS_ERROR("NetAddrToString failed unexpectedly");
+ return NS_ERROR_FAILURE; // conversion failed for some reason
+}
+
+NS_IMETHODIMP
+ChildDNSRecord::HasMore(bool* result) {
+ *result = mCurrent < mAddresses.Length();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ChildDNSRecord::Rewind() {
+ mCurrent = 0;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ChildDNSRecord::ReportUnusable(uint16_t aPort) {
+ // "We thank you for your feedback" == >/dev/null
+ // TODO: we could send info back to parent.
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ChildDNSRecord::GetEffectiveTRRMode(nsIRequest::TRRMode* aMode) {
+ *aMode = mEffectiveTRRMode;
+ return NS_OK;
+}
+
+NS_IMETHODIMP ChildDNSRecord::GetTrrSkipReason(
+ nsITRRSkipReason::value* aTrrSkipReason) {
+ *aTrrSkipReason = mTRRSkipReason;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ChildDNSRecord::GetTtl(uint32_t* aTtl) {
+ *aTtl = mTTL;
+ return NS_OK;
+}
+
+class ChildDNSByTypeRecord : public nsIDNSByTypeRecord,
+ public nsIDNSTXTRecord,
+ public nsIDNSHTTPSSVCRecord,
+ public DNSHTTPSSVCRecordBase {
+ public:
+ NS_DECL_THREADSAFE_ISUPPORTS
+ NS_DECL_NSIDNSRECORD
+ NS_DECL_NSIDNSBYTYPERECORD
+ NS_DECL_NSIDNSTXTRECORD
+ NS_DECL_NSIDNSHTTPSSVCRECORD
+
+ explicit ChildDNSByTypeRecord(const TypeRecordResultType& reply,
+ const nsACString& aHost, uint32_t aTTL);
+
+ private:
+ virtual ~ChildDNSByTypeRecord() = default;
+
+ TypeRecordResultType mResults = AsVariant(mozilla::Nothing());
+ bool mAllRecordsExcluded = false;
+ uint32_t mTTL = 0;
+};
+
+NS_IMPL_ISUPPORTS(ChildDNSByTypeRecord, nsIDNSByTypeRecord, nsIDNSRecord,
+ nsIDNSTXTRecord, nsIDNSHTTPSSVCRecord)
+
+ChildDNSByTypeRecord::ChildDNSByTypeRecord(const TypeRecordResultType& reply,
+ const nsACString& aHost,
+ uint32_t aTTL)
+ : DNSHTTPSSVCRecordBase(aHost) {
+ mResults = reply;
+ mTTL = aTTL;
+}
+
+NS_IMETHODIMP
+ChildDNSByTypeRecord::GetType(uint32_t* aType) {
+ *aType = mResults.match(
+ [](TypeRecordEmpty&) {
+ MOZ_ASSERT(false, "This should never be the case");
+ return nsIDNSService::RESOLVE_TYPE_DEFAULT;
+ },
+ [](TypeRecordTxt&) { return nsIDNSService::RESOLVE_TYPE_TXT; },
+ [](TypeRecordHTTPSSVC&) { return nsIDNSService::RESOLVE_TYPE_HTTPSSVC; });
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ChildDNSByTypeRecord::GetRecords(CopyableTArray<nsCString>& aRecords) {
+ if (!mResults.is<TypeRecordTxt>()) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+ aRecords = mResults.as<CopyableTArray<nsCString>>();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ChildDNSByTypeRecord::GetRecordsAsOneString(nsACString& aRecords) {
+ // deep copy
+ if (!mResults.is<TypeRecordTxt>()) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+ auto& results = mResults.as<CopyableTArray<nsCString>>();
+ for (uint32_t i = 0; i < results.Length(); i++) {
+ aRecords.Append(results[i]);
+ }
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ChildDNSByTypeRecord::GetRecords(nsTArray<RefPtr<nsISVCBRecord>>& aRecords) {
+ if (!mResults.is<TypeRecordHTTPSSVC>()) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ auto& results = mResults.as<TypeRecordHTTPSSVC>();
+
+ for (const SVCB& r : results) {
+ RefPtr<nsISVCBRecord> rec = new SVCBRecord(r);
+ aRecords.AppendElement(rec);
+ }
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ChildDNSByTypeRecord::GetServiceModeRecord(bool aNoHttp2, bool aNoHttp3,
+ nsISVCBRecord** aRecord) {
+ if (!mResults.is<TypeRecordHTTPSSVC>()) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ auto& results = mResults.as<TypeRecordHTTPSSVC>();
+ nsCOMPtr<nsISVCBRecord> result = GetServiceModeRecordInternal(
+ aNoHttp2, aNoHttp3, results, mAllRecordsExcluded);
+ if (!result) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ result.forget(aRecord);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ChildDNSByTypeRecord::GetAllRecordsWithEchConfig(
+ bool aNoHttp2, bool aNoHttp3, bool* aAllRecordsHaveEchConfig,
+ bool* aAllRecordsInH3ExcludedList,
+ nsTArray<RefPtr<nsISVCBRecord>>& aResult) {
+ if (!mResults.is<TypeRecordHTTPSSVC>()) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ auto& records = mResults.as<TypeRecordHTTPSSVC>();
+ GetAllRecordsWithEchConfigInternal(aNoHttp2, aNoHttp3, records,
+ aAllRecordsHaveEchConfig,
+ aAllRecordsInH3ExcludedList, aResult);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ChildDNSByTypeRecord::GetHasIPAddresses(bool* aResult) {
+ NS_ENSURE_ARG(aResult);
+
+ if (!mResults.is<TypeRecordHTTPSSVC>()) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ auto& results = mResults.as<TypeRecordHTTPSSVC>();
+ *aResult = HasIPAddressesInternal(results);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ChildDNSByTypeRecord::GetAllRecordsExcluded(bool* aResult) {
+ NS_ENSURE_ARG(aResult);
+
+ if (!mResults.is<TypeRecordHTTPSSVC>()) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ *aResult = mAllRecordsExcluded;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ChildDNSByTypeRecord::GetResults(mozilla::net::TypeRecordResultType* aResults) {
+ *aResults = mResults;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ChildDNSByTypeRecord::GetTtl(uint32_t* aResult) {
+ *aResult = mTTL;
+ return NS_OK;
+}
+
+//-----------------------------------------------------------------------------
+// DNSRequestSender
+//-----------------------------------------------------------------------------
+
+NS_IMPL_ISUPPORTS(DNSRequestSender, nsICancelable)
+
+DNSRequestSender::DNSRequestSender(const nsACString& aHost,
+ const nsACString& aTrrServer, int32_t aPort,
+ const uint16_t& aType,
+ const OriginAttributes& aOriginAttributes,
+ const nsIDNSService::DNSFlags& aFlags,
+ nsIDNSListener* aListener,
+ nsIEventTarget* target)
+ : mListener(aListener),
+ mTarget(target),
+ mResultStatus(NS_OK),
+ mHost(aHost),
+ mTrrServer(aTrrServer),
+ mPort(aPort),
+ mType(aType),
+ mOriginAttributes(aOriginAttributes),
+ mFlags(aFlags) {}
+
+void DNSRequestSender::OnRecvCancelDNSRequest(
+ const nsCString& hostName, const nsCString& trrServer, const int32_t& port,
+ const uint16_t& type, const OriginAttributes& originAttributes,
+ const nsIDNSService::DNSFlags& flags, const nsresult& reason) {}
+
+NS_IMETHODIMP
+DNSRequestSender::Cancel(nsresult reason) {
+ if (!mIPCActor) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ // We can only do IPC on the MainThread
+ nsCOMPtr<nsIRunnable> runnable = NS_NewRunnableFunction(
+ "net::CancelDNSRequestEvent",
+ [actor(mIPCActor), host(mHost), trrServer(mTrrServer), port(mPort),
+ type(mType), originAttributes(mOriginAttributes), flags(mFlags),
+ reason]() {
+ if (!actor->CanSend()) {
+ return;
+ }
+
+ if (DNSRequestChild* child = actor->AsDNSRequestChild()) {
+ Unused << child->SendCancelDNSRequest(
+ host, trrServer, port, type, originAttributes, flags, reason);
+ } else if (DNSRequestParent* parent = actor->AsDNSRequestParent()) {
+ Unused << parent->SendCancelDNSRequest(
+ host, trrServer, port, type, originAttributes, flags, reason);
+ }
+ });
+ SchedulerGroup::Dispatch(runnable.forget());
+ return NS_OK;
+}
+
+void DNSRequestSender::StartRequest() {
+ // we can only do IPC on the MainThread
+ if (!NS_IsMainThread()) {
+ SchedulerGroup::Dispatch(
+ NewRunnableMethod("net::DNSRequestSender::StartRequest", this,
+ &DNSRequestSender::StartRequest));
+ return;
+ }
+
+ if (RefPtr<DNSRequestChild> child = mIPCActor->AsDNSRequestChild()) {
+ if (XRE_IsContentProcess()) {
+ mozilla::dom::ContentChild* cc =
+ static_cast<mozilla::dom::ContentChild*>(gNeckoChild->Manager());
+ if (cc->IsShuttingDown()) {
+ return;
+ }
+
+ // Send request to Parent process.
+ gNeckoChild->SendPDNSRequestConstructor(child, mHost, mTrrServer, mPort,
+ mType, mOriginAttributes, mFlags);
+ } else if (XRE_IsSocketProcess()) {
+ // DNS resolution is done in the parent process. Send a DNS request to
+ // parent process.
+ MOZ_ASSERT(!nsIOService::UseSocketProcess());
+
+ SocketProcessChild* socketProcessChild =
+ SocketProcessChild::GetSingleton();
+ if (!socketProcessChild->CanSend()) {
+ return;
+ }
+
+ MOZ_ALWAYS_TRUE(socketProcessChild->SendPDNSRequestConstructor(
+ child, mHost, mTrrServer, mPort, mType, mOriginAttributes, mFlags));
+ } else {
+ MOZ_ASSERT(false, "Wrong process");
+ return;
+ }
+ } else if (DNSRequestParent* parent = mIPCActor->AsDNSRequestParent()) {
+ // DNS resolution is done in the socket process. Send a DNS request to
+ // socket process.
+ MOZ_ASSERT(nsIOService::UseSocketProcess());
+
+ RefPtr<DNSRequestParent> requestParent = parent;
+ RefPtr<DNSRequestSender> self = this;
+ auto task = [requestParent, self]() {
+ Unused << SocketProcessParent::GetSingleton()->SendPDNSRequestConstructor(
+ requestParent, self->mHost, self->mTrrServer, self->mPort,
+ self->mType, self->mOriginAttributes, self->mFlags);
+ };
+ if (!gIOService->SocketProcessReady()) {
+ gIOService->CallOrWaitForSocketProcess(std::move(task));
+ return;
+ }
+
+ task();
+ }
+}
+
+void DNSRequestSender::CallOnLookupComplete() {
+ MOZ_ASSERT(mListener);
+ mListener->OnLookupComplete(this, mResultRecord, mResultStatus);
+}
+
+bool DNSRequestSender::OnRecvLookupCompleted(const DNSRequestResponse& reply) {
+ MOZ_ASSERT(mListener);
+
+ switch (reply.type()) {
+ case DNSRequestResponse::TDNSRecord: {
+ mResultRecord = new ChildDNSRecord(reply.get_DNSRecord(), mFlags);
+ break;
+ }
+ case DNSRequestResponse::Tnsresult: {
+ mResultStatus = reply.get_nsresult();
+ break;
+ }
+ case DNSRequestResponse::TIPCTypeRecord: {
+ MOZ_ASSERT(mType != nsIDNSService::RESOLVE_TYPE_DEFAULT);
+ mResultRecord =
+ new ChildDNSByTypeRecord(reply.get_IPCTypeRecord().mData, mHost,
+ reply.get_IPCTypeRecord().mTTL);
+ break;
+ }
+ default:
+ MOZ_ASSERT_UNREACHABLE("unknown type");
+ return false;
+ }
+
+ MOZ_ASSERT(NS_IsMainThread());
+
+ bool targetIsMain = false;
+ if (!mTarget) {
+ targetIsMain = true;
+ } else {
+ mTarget->IsOnCurrentThread(&targetIsMain);
+ }
+
+ if (targetIsMain) {
+ CallOnLookupComplete();
+ } else {
+ nsCOMPtr<nsIRunnable> event =
+ NewRunnableMethod("net::DNSRequestSender::CallOnLookupComplete", this,
+ &DNSRequestSender::CallOnLookupComplete);
+ mTarget->Dispatch(event, NS_DISPATCH_NORMAL);
+ }
+
+ if (DNSRequestChild* child = mIPCActor->AsDNSRequestChild()) {
+ Unused << mozilla::net::DNSRequestChild::Send__delete__(child);
+ } else if (DNSRequestParent* parent = mIPCActor->AsDNSRequestParent()) {
+ Unused << mozilla::net::DNSRequestParent::Send__delete__(parent);
+ }
+
+ return true;
+}
+
+void DNSRequestSender::OnIPCActorDestroy() {
+ // Request is done or destroyed. Remove it from the hash table.
+ RefPtr<ChildDNSService> dnsServiceChild =
+ dont_AddRef(ChildDNSService::GetSingleton());
+ dnsServiceChild->NotifyRequestDone(this);
+
+ mIPCActor = nullptr;
+}
+
+//-----------------------------------------------------------------------------
+// DNSRequestChild
+//-----------------------------------------------------------------------------
+
+DNSRequestChild::DNSRequestChild(DNSRequestBase* aRequest)
+ : DNSRequestActor(aRequest) {
+ aRequest->SetIPCActor(this);
+}
+
+mozilla::ipc::IPCResult DNSRequestChild::RecvCancelDNSRequest(
+ const nsCString& hostName, const nsCString& trrServer, const int32_t& port,
+ const uint16_t& type, const OriginAttributes& originAttributes,
+ const nsIDNSService::DNSFlags& flags, const nsresult& reason) {
+ mDNSRequest->OnRecvCancelDNSRequest(hostName, trrServer, port, type,
+ originAttributes, flags, reason);
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult DNSRequestChild::RecvLookupCompleted(
+ const DNSRequestResponse& reply) {
+ return mDNSRequest->OnRecvLookupCompleted(reply) ? IPC_OK()
+ : IPC_FAIL_NO_REASON(this);
+}
+
+void DNSRequestChild::ActorDestroy(ActorDestroyReason) {
+ mDNSRequest->OnIPCActorDestroy();
+ mDNSRequest = nullptr;
+}
+
+//------------------------------------------------------------------------------
+} // namespace net
+} // namespace mozilla