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-rw-r--r--netwerk/dns/DNSRequestBase.h152
1 files changed, 152 insertions, 0 deletions
diff --git a/netwerk/dns/DNSRequestBase.h b/netwerk/dns/DNSRequestBase.h
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+++ b/netwerk/dns/DNSRequestBase.h
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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/. */
+
+#ifndef mozilla_net_DNSRequestBase_h
+#define mozilla_net_DNSRequestBase_h
+
+#include "mozilla/net/PDNSRequestParent.h"
+#include "nsICancelable.h"
+#include "nsIDNSRecord.h"
+#include "nsIDNSListener.h"
+#include "nsIDNSByTypeRecord.h"
+#include "nsIEventTarget.h"
+
+namespace mozilla {
+namespace net {
+
+class DNSRequestActor;
+class DNSRequestChild;
+class DNSRequestHandler;
+class DNSRequestParent;
+class DNSRequestSender;
+
+// A base class for DNSRequestSender and DNSRequestHandler.
+// Provide interfaces for processing DNS requests.
+class DNSRequestBase : public nsISupports {
+ public:
+ explicit DNSRequestBase() = default;
+
+ void SetIPCActor(DNSRequestActor* aActor);
+
+ virtual void 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) = 0;
+ virtual bool OnRecvLookupCompleted(const DNSRequestResponse& reply) = 0;
+ virtual void OnIPCActorDestroy() = 0;
+
+ virtual DNSRequestSender* AsDNSRequestSender() = 0;
+ virtual DNSRequestHandler* AsDNSRequestHandler() = 0;
+
+ protected:
+ virtual ~DNSRequestBase() = default;
+
+ RefPtr<DNSRequestActor> mIPCActor;
+};
+
+// DNSRequestSender is used to send an IPC request to DNSRequestHandler and
+// deliver the result to nsIDNSListener.
+// Note this class could be used both in content process and parent process.
+class DNSRequestSender final : public DNSRequestBase, public nsICancelable {
+ public:
+ NS_DECL_THREADSAFE_ISUPPORTS
+ NS_DECL_NSICANCELABLE
+
+ 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);
+
+ void 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) override;
+ bool OnRecvLookupCompleted(const DNSRequestResponse& reply) override;
+ void OnIPCActorDestroy() override;
+
+ // Sends IPDL request to DNSRequestHandler
+ void StartRequest();
+ void CallOnLookupComplete();
+
+ DNSRequestSender* AsDNSRequestSender() override { return this; }
+ DNSRequestHandler* AsDNSRequestHandler() override { return nullptr; }
+
+ private:
+ friend class ChildDNSService;
+ virtual ~DNSRequestSender() = default;
+
+ nsCOMPtr<nsIDNSListener> mListener;
+ nsCOMPtr<nsIEventTarget> mTarget;
+ nsCOMPtr<nsIDNSRecord> mResultRecord;
+ nsresult mResultStatus = NS_OK;
+ nsCString mHost;
+ nsCString mTrrServer;
+ int32_t mPort;
+ uint16_t mType = 0;
+ const OriginAttributes mOriginAttributes;
+ nsIDNSService::DNSFlags mFlags = nsIDNSService::RESOLVE_DEFAULT_FLAGS;
+};
+
+// DNSRequestHandler handles the dns request and sends the result back via IPC.
+// Note this class could be used both in parent process and socket process.
+class DNSRequestHandler final : public DNSRequestBase, public nsIDNSListener {
+ public:
+ NS_DECL_THREADSAFE_ISUPPORTS
+ NS_DECL_NSIDNSLISTENER
+
+ DNSRequestHandler() = default;
+
+ void DoAsyncResolve(const nsACString& hostname, const nsACString& trrServer,
+ int32_t port, uint16_t type,
+ const OriginAttributes& originAttributes,
+ nsIDNSService::DNSFlags flags);
+
+ void 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) override;
+ bool OnRecvLookupCompleted(const DNSRequestResponse& reply) override;
+ void OnIPCActorDestroy() override;
+
+ DNSRequestSender* AsDNSRequestSender() override { return nullptr; }
+ DNSRequestHandler* AsDNSRequestHandler() override { return this; }
+
+ private:
+ virtual ~DNSRequestHandler() = default;
+
+ nsIDNSService::DNSFlags mFlags = nsIDNSService::RESOLVE_DEFAULT_FLAGS;
+};
+
+// Provides some common methods for DNSRequestChild and DNSRequestParent.
+class DNSRequestActor {
+ public:
+ NS_INLINE_DECL_PURE_VIRTUAL_REFCOUNTING
+
+ explicit DNSRequestActor(DNSRequestBase* aRequest) : mDNSRequest(aRequest) {}
+
+ virtual bool CanSend() const = 0;
+ virtual DNSRequestChild* AsDNSRequestChild() = 0;
+ virtual DNSRequestParent* AsDNSRequestParent() = 0;
+
+ DNSRequestBase* GetDNSRequest() { return mDNSRequest.get(); };
+
+ protected:
+ virtual ~DNSRequestActor() = default;
+
+ RefPtr<DNSRequestBase> mDNSRequest;
+};
+
+} // namespace net
+} // namespace mozilla
+
+#endif // mozilla_net_DNSRequestBase_h