android: stop watching legacy netmap notifications

Follow up to tailscale/tailscale#19607, which introduced the
constant-time node add/remove path and temporarily kept Android on
legacy Notify.NetMap emission.

Move the Android app notification watcher to InitialStatus plus
peer-change notifications, and opt both Android watchers out of
runtime NetMap delivery.

Updates tailscale/tailscale#12542

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>

Author: bradfitz

android/src/main/java/com/tailscale/ipn/ui/model/Ipn.kt

@@ -42,7 +42,11 @@ class Ipn {
       val OutgoingFiles: List<OutgoingFile>? = null,
       val State: Int? = null,
       var Prefs: Prefs? = null,
-      var NetMap: Netmap.NetworkMap? = null,
+      var SelfChange: Tailcfg.Node? = null,
+      var InitialStatus: IpnState.Status? = null,
+      var PeersChanged: List<Tailcfg.Node>? = null,
+      var PeersRemoved: List<NodeID>? = null,
+      var UserProfiles: Map<String, Tailcfg.UserProfile>? = null,
       var Engine: EngineStatus? = null,
       var BrowseToURL: String? = null,
       var BackendLogId: String? = null,

android/src/main/java/com/tailscale/ipn/ui/model/IpnState.kt

@@ -17,25 +17,34 @@ class IpnState {
 
   @Serializable
   data class PeerStatus(
-      val ID: StableNodeID,
-      val HostName: String,
-      val DNSName: String,
+      val ID: StableNodeID = "",
+      val NodeID: NodeID = 0,
+      val PublicKey: KeyNodePublic = "",
+      val HostName: String = "",
+      val DNSName: String = "",
+      val OS: String = "",
+      val UserID: UserID = 0,
+      val AltSharerUserID: UserID = 0,
       val TailscaleIPs: List<Addr>? = null,
+      val AllowedIPs: List<Prefix>? = null,
       val Tags: List<String>? = null,
       val PrimaryRoutes: List<String>? = null,
       val Addrs: List<String>? = null,
       val CurAddr: String? = null,
       val Relay: String? = null,
       val PeerRelay: String? = null,
-      val Online: Boolean,
-      val ExitNode: Boolean,
-      val ExitNodeOption: Boolean,
-      val Active: Boolean,
+      val LastSeen: String? = null,
+      val Online: Boolean = false,
+      val ExitNode: Boolean = false,
+      val ExitNodeOption: Boolean = false,
+      val Active: Boolean = false,
       val PeerAPIURL: List<String>? = null,
       val Capabilities: List<String>? = null,
+      val CapMap: Map<String, kotlinx.serialization.json.JsonElement?>? = null,
       val SSH_HostKeys: List<String>? = null,
       val ShareeNode: Boolean? = null,
       val Expired: Boolean? = null,
+      val KeyExpiry: String? = null,
       val Location: Tailcfg.Location? = null,
   ) {
     fun computedName(status: Status): String {
@@ -54,24 +63,24 @@ class IpnState {
 
   @Serializable
   data class ExitNodeStatus(
-      val ID: StableNodeID,
-      val Online: Boolean,
+      val ID: StableNodeID = "",
+      val Online: Boolean = false,
       val TailscaleIPs: List<Prefix>? = null,
   )
 
   @Serializable
   data class TailnetStatus(
-      val Name: String,
-      val MagicDNSSuffix: String,
-      val MagicDNSEnabled: Boolean,
+      val Name: String = "",
+      val MagicDNSSuffix: String = "",
+      val MagicDNSEnabled: Boolean = false,
   )
 
   @Serializable
   data class Status(
-      val Version: String,
-      val TUN: Boolean,
-      val BackendState: String,
-      val AuthURL: String,
+      val Version: String = "",
+      val TUN: Boolean = false,
+      val BackendState: String = "",
+      val AuthURL: String = "",
       val TailscaleIPs: List<Addr>? = null,
       val Self: PeerStatus? = null,
       val ExitNodeStatus: ExitNodeStatus? = null,

android/src/main/java/com/tailscale/ipn/ui/model/TailCfg.kt

@@ -32,9 +32,9 @@ class Tailcfg {
 
   @Serializable
   data class UserProfile(
-      val ID: Long,
-      val DisplayName: String,
-      val LoginName: String,
+      val ID: Long = 0,
+      val DisplayName: String = "",
+      val LoginName: String = "",
       val ProfilePicURL: String? = null,
   ) {
     fun isTaggedDevice(): Boolean {
@@ -68,23 +68,23 @@ class Tailcfg {
 
   @Serializable
   data class Node(
-      var ID: NodeID,
-      var StableID: StableNodeID,
-      var Name: String,
-      var User: UserID,
+      var ID: NodeID = 0,
+      var StableID: StableNodeID = "",
+      var Name: String = "",
+      var User: UserID = 0,
       var Sharer: UserID? = null,
-      var Key: KeyNodePublic,
+      var Key: KeyNodePublic = "",
       var KeyExpiry: String? = null,
       var Addresses: List<Prefix>? = null,
       var AllowedIPs: List<Prefix>? = null,
       var Endpoints: List<String>? = null,
-      var Hostinfo: Hostinfo,
+      var Hostinfo: Hostinfo = Hostinfo(),
       var LastSeen: Time? = null,
       var Online: Boolean? = null,
       var Capabilities: List<String>? = null,
       var CapMap: Map<String, JsonElement?>? = null,
-      var ComputedName: String?,
-      var ComputedNameWithHost: String?
+      var ComputedName: String? = null,
+      var ComputedNameWithHost: String? = null
   ) {
     val isAdmin: Boolean
       get() =