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/* -*- Mode: C++; tab-width: 2; 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/. */
/*
Alt-Svc allows separation of transport routing from the origin host without
using a proxy. See https://httpwg.github.io/http-extensions/alt-svc.html and
https://tools.ietf.org/html/draft-ietf-httpbis-alt-svc-06
Nice To Have Future Enhancements::
* flush on network change event when we have an indicator
* use established https channel for http instead separate of conninfo hash
* pin via http-tls header
* clear based on origin when a random fail happens not just 421
* upon establishment of channel, cancel and retry trans that have not yet written anything
* persistent storage (including private browsing filter)
* memory reporter for cache, but this is rather tiny
*/
#ifndef mozilla_net_AlternateServices_h
#define mozilla_net_AlternateServices_h
#include "mozilla/DataStorage.h"
#include "nsRefPtrHashtable.h"
#include "nsString.h"
#include "nsIInterfaceRequestor.h"
#include "nsIStreamListener.h"
#include "nsISpeculativeConnect.h"
#include "mozilla/BasePrincipal.h"
class nsILoadInfo;
namespace mozilla { namespace net {
class nsProxyInfo;
class nsHttpConnectionInfo;
class nsHttpTransaction;
class nsHttpChannel;
class WellKnownChecker;
class AltSvcMapping
{
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(AltSvcMapping)
private: // ctor from ProcessHeader
AltSvcMapping(DataStorage *storage,
int32_t storageEpoch,
const nsACString &originScheme,
const nsACString &originHost,
int32_t originPort,
const nsACString &username,
bool privateBrowsing,
uint32_t expiresAt,
const nsACString &alternateHost,
int32_t alternatePort,
const nsACString &npnToken);
public:
AltSvcMapping(DataStorage *storage, int32_t storageEpoch, const nsCString &serialized);
static void ProcessHeader(const nsCString &buf, const nsCString &originScheme,
const nsCString &originHost, int32_t originPort,
const nsACString &username, bool privateBrowsing,
nsIInterfaceRequestor *callbacks, nsProxyInfo *proxyInfo,
uint32_t caps, const NeckoOriginAttributes &originAttributes);
const nsCString &AlternateHost() const { return mAlternateHost; }
const nsCString &OriginHost() const { return mOriginHost; }
uint32_t OriginPort() const { return mOriginPort; }
const nsCString &HashKey() const { return mHashKey; }
uint32_t AlternatePort() const { return mAlternatePort; }
bool Validated() { return mValidated; }
int32_t GetExpiresAt() { return mExpiresAt; }
bool RouteEquals(AltSvcMapping *map);
bool HTTPS() { return mHttps; }
void GetConnectionInfo(nsHttpConnectionInfo **outCI, nsProxyInfo *pi,
const NeckoOriginAttributes &originAttributes);
int32_t TTL();
int32_t StorageEpoch() { return mStorageEpoch; }
bool Private() { return mPrivate; }
void SetValidated(bool val);
void SetMixedScheme(bool val);
void SetExpiresAt(int32_t val);
void SetExpired();
void Sync();
static void MakeHashKey(nsCString &outKey,
const nsACString &originScheme,
const nsACString &originHost,
int32_t originPort,
bool privateBrowsing);
private:
virtual ~AltSvcMapping() {};
void SyncString(nsCString val);
RefPtr<DataStorage> mStorage;
int32_t mStorageEpoch;
void Serialize (nsCString &out);
nsCString mHashKey;
// If you change any of these members, update Serialize()
nsCString mAlternateHost;
MOZ_INIT_OUTSIDE_CTOR int32_t mAlternatePort;
nsCString mOriginHost;
MOZ_INIT_OUTSIDE_CTOR int32_t mOriginPort;
nsCString mUsername;
MOZ_INIT_OUTSIDE_CTOR bool mPrivate;
MOZ_INIT_OUTSIDE_CTOR uint32_t mExpiresAt; // alt-svc mappping
MOZ_INIT_OUTSIDE_CTOR bool mValidated;
MOZ_INIT_OUTSIDE_CTOR bool mHttps; // origin is https://
MOZ_INIT_OUTSIDE_CTOR bool mMixedScheme; // .wk allows http and https on same con
nsCString mNPNToken;
};
class AltSvcOverride : public nsIInterfaceRequestor
, public nsISpeculativeConnectionOverrider
{
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSISPECULATIVECONNECTIONOVERRIDER
NS_DECL_NSIINTERFACEREQUESTOR
explicit AltSvcOverride(nsIInterfaceRequestor *aRequestor)
: mCallbacks(aRequestor) {}
private:
virtual ~AltSvcOverride() {}
nsCOMPtr<nsIInterfaceRequestor> mCallbacks;
};
class TransactionObserver : public nsIStreamListener
{
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSISTREAMLISTENER
NS_DECL_NSIREQUESTOBSERVER
TransactionObserver(nsHttpChannel *channel, WellKnownChecker *checker);
void Complete(nsHttpTransaction *, nsresult);
private:
friend class WellKnownChecker;
virtual ~TransactionObserver() {}
nsCOMPtr<nsISupports> mChannelRef;
nsHttpChannel *mChannel;
WellKnownChecker *mChecker;
nsCString mWKResponse;
bool mRanOnce;
bool mAuthOK; // confirmed no TLS failure
bool mVersionOK; // connection h2
bool mStatusOK; // HTTP Status 200
};
class AltSvcCache
{
public:
AltSvcCache() : mStorageEpoch(0) {}
virtual ~AltSvcCache () {};
void UpdateAltServiceMapping(AltSvcMapping *map, nsProxyInfo *pi,
nsIInterfaceRequestor *, uint32_t caps,
const NeckoOriginAttributes &originAttributes); // main thread
already_AddRefed<AltSvcMapping> GetAltServiceMapping(const nsACString &scheme,
const nsACString &host,
int32_t port, bool pb);
void ClearAltServiceMappings();
void ClearHostMapping(const nsACString &host, int32_t port);
void ClearHostMapping(nsHttpConnectionInfo *ci);
DataStorage *GetStoragePtr() { return mStorage.get(); }
int32_t StorageEpoch() { return mStorageEpoch; }
private:
already_AddRefed<AltSvcMapping> LookupMapping(const nsCString &key, bool privateBrowsing);
RefPtr<DataStorage> mStorage;
int32_t mStorageEpoch;
};
} // namespace net
} // namespace mozilla
#endif // include guard
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