From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 21:33:14 +0200
Subject: Adding upstream version 115.7.0esr.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 netwerk/system/netlink/NetlinkService.h | 168 ++++++++++++++++++++++++++++++++
 1 file changed, 168 insertions(+)
 create mode 100644 netwerk/system/netlink/NetlinkService.h

(limited to 'netwerk/system/netlink/NetlinkService.h')

diff --git a/netwerk/system/netlink/NetlinkService.h b/netwerk/system/netlink/NetlinkService.h
new file mode 100644
index 0000000000..1de3992f47
--- /dev/null
+++ b/netwerk/system/netlink/NetlinkService.h
@@ -0,0 +1,168 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set et sw=2 ts=4: */
+/* 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 NETLINKSERVICE_H_
+#define NETLINKSERVICE_H_
+
+#include <netinet/in.h>
+
+#include "nsIRunnable.h"
+#include "nsThreadUtils.h"
+#include "nsCOMPtr.h"
+#include "mozilla/Mutex.h"
+#include "mozilla/TimeStamp.h"
+#include "nsClassHashtable.h"
+#include "mozilla/SHA1.h"
+#include "mozilla/UniquePtr.h"
+#include "nsTArray.h"
+#include "mozilla/net/DNS.h"
+
+namespace mozilla {
+namespace net {
+
+class NetlinkAddress;
+class NetlinkNeighbor;
+class NetlinkLink;
+class NetlinkRoute;
+class NetlinkMsg;
+
+class NetlinkServiceListener : public nsISupports {
+ public:
+  virtual void OnNetworkChanged() = 0;
+  virtual void OnNetworkIDChanged() = 0;
+  virtual void OnLinkUp() = 0;
+  virtual void OnLinkDown() = 0;
+  virtual void OnLinkStatusKnown() = 0;
+  virtual void OnDnsSuffixListUpdated() = 0;
+
+ protected:
+  virtual ~NetlinkServiceListener() = default;
+};
+
+class NetlinkService : public nsIRunnable {
+  virtual ~NetlinkService();
+
+ public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIRUNNABLE
+
+  NetlinkService();
+  nsresult Init(NetlinkServiceListener* aListener);
+  nsresult Shutdown();
+  void GetNetworkID(nsACString& aNetworkID);
+  void GetIsLinkUp(bool* aIsUp);
+  nsresult GetDnsSuffixList(nsTArray<nsCString>& aDnsSuffixList);
+  nsresult GetResolvers(nsTArray<NetAddr>& aResolvers);
+
+ private:
+  void EnqueueGenMsg(uint16_t aMsgType, uint8_t aFamily);
+  void EnqueueRtMsg(uint8_t aFamily, void* aAddress);
+  void RemovePendingMsg();
+
+  mozilla::Mutex mMutex MOZ_UNANNOTATED{"NetlinkService::mMutex"};
+
+  void OnNetlinkMessage(int aNetlinkSocket);
+  void OnLinkMessage(struct nlmsghdr* aNlh);
+  void OnAddrMessage(struct nlmsghdr* aNlh);
+  void OnRouteMessage(struct nlmsghdr* aNlh);
+  void OnNeighborMessage(struct nlmsghdr* aNlh);
+  void OnRouteCheckResult(struct nlmsghdr* aNlh);
+
+  void UpdateLinkStatus();
+
+  void TriggerNetworkIDCalculation();
+  int GetPollWait();
+  void GetGWNeighboursForFamily(uint8_t aFamily,
+                                nsTArray<NetlinkNeighbor*>& aGwNeighbors);
+  bool CalculateIDForFamily(uint8_t aFamily, mozilla::SHA1Sum* aSHA1);
+  void CalculateNetworkID();
+  void ExtractDNSProperties();
+
+  nsCOMPtr<nsIThread> mThread;
+
+  bool mInitialScanFinished{false};
+
+  // A pipe to signal shutdown with.
+  int mShutdownPipe[2]{-1, -1};
+
+  // IP addresses that are used to check the route for public traffic.
+  struct in_addr mRouteCheckIPv4 {};
+  struct in6_addr mRouteCheckIPv6 {};
+
+  pid_t mPid;
+  uint32_t mMsgId{0};
+
+  bool mLinkUp{true};
+
+  // Flag indicating that network ID could change and should be recalculated.
+  // Calculation is postponed until we receive responses to all enqueued
+  // messages.
+  bool mRecalculateNetworkId{false};
+
+  // Flag indicating that network change event needs to be sent even if
+  // network ID hasn't changed.
+  bool mSendNetworkChangeEvent{false};
+
+  // Time stamp of setting mRecalculateNetworkId to true
+  mozilla::TimeStamp mTriggerTime;
+
+  nsCString mNetworkId;
+  nsTArray<nsCString> mDNSSuffixList;
+  nsTArray<NetAddr> mDNSResolvers;
+
+  class LinkInfo {
+   public:
+    explicit LinkInfo(UniquePtr<NetlinkLink>&& aLink);
+    virtual ~LinkInfo();
+
+    // Updates mIsUp according to current mLink and mAddresses. Returns true if
+    // the value has changed.
+    bool UpdateStatus();
+
+    // NetlinkLink structure for this link
+    UniquePtr<NetlinkLink> mLink;
+
+    // All IPv4/IPv6 addresses on this link
+    nsTArray<UniquePtr<NetlinkAddress>> mAddresses;
+
+    // All neighbors on this link, key is an address
+    nsClassHashtable<nsCStringHashKey, NetlinkNeighbor> mNeighbors;
+
+    // Default IPv4/IPv6 routes
+    nsTArray<UniquePtr<NetlinkRoute>> mDefaultRoutes;
+
+    // Link is up when it's running, it's not a loopback and there is
+    // a non-local address associated with it.
+    bool mIsUp;
+  };
+
+  bool CalculateIDForEthernetLink(uint8_t aFamily,
+                                  NetlinkRoute* aRouteCheckResult,
+                                  uint32_t aRouteCheckIfIdx,
+                                  LinkInfo* aRouteCheckLinkInfo,
+                                  mozilla::SHA1Sum* aSHA1);
+  bool CalculateIDForNonEthernetLink(uint8_t aFamily,
+                                     NetlinkRoute* aRouteCheckResult,
+                                     nsTArray<nsCString>& aLinkNamesToHash,
+                                     uint32_t aRouteCheckIfIdx,
+                                     LinkInfo* aRouteCheckLinkInfo,
+                                     mozilla::SHA1Sum* aSHA1);
+
+  nsClassHashtable<nsUint32HashKey, LinkInfo> mLinks;
+
+  // Route for mRouteCheckIPv4 address
+  UniquePtr<NetlinkRoute> mIPv4RouteCheckResult;
+  // Route for mRouteCheckIPv6 address
+  UniquePtr<NetlinkRoute> mIPv6RouteCheckResult;
+
+  nsTArray<UniquePtr<NetlinkMsg>> mOutgoingMessages;
+
+  RefPtr<NetlinkServiceListener> mListener;
+};
+
+}  // namespace net
+}  // namespace mozilla
+
+#endif /* NETLINKSERVICE_H_ */
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