Show node reachability in node list

4 files changed, 150 insertions, 13 deletions

diff --git a/app/src/main/java/org/pacien/tincapp/activities/status/nodes/NodeInfo.kt b/app/src/main/java/org/pacien/tincapp/activities/status/nodes/NodeInfo.kt
new file mode 100644
index 0000000..06725dc
--- /dev/null
+++ b/app/src/main/java/org/pacien/tincapp/activities/status/nodes/NodeInfo.kt
@@ -0,0 +1,99 @@
+/*
+ * Tinc App, an Android binding and user interface for the tinc mesh VPN daemon
+ * Copyright (C) 2017-2018 Pacien TRAN-GIRARD
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package org.pacien.tincapp.activities.status.nodes
+
+import org.pacien.tincapp.R
+import org.pacien.tincapp.context.App
+import java.util.regex.Matcher
+import java.util.regex.Pattern
+
+/**
+ * @author pacien
+ */
+data class NodeInfo(val name: String,
+                    val id: String,
+                    val ip: String,
+                    val port: String,
+                    val cipher: Int,
+                    val digest: Int,
+                    val macLength: Int,
+                    val compression: Int,
+                    val options: Int,
+                    val status: Int,
+                    val nextHop: String,
+                    val via: String,
+                    val distance: Int,
+                    val pMtu: Int,
+                    val minMtu: Int,
+                    val maxMtu: Int) {
+
+  // https://github.com/gsliepen/tinc/blob/950bbc8f2f9c580ac85bef7bab9a3ae36ea99c4b/src/info.c#L174
+  fun reachabilityText(): String = when {
+    ip == "MYSELF" -> RESOURCES.getString(R.string.status_node_reachability_this_node)
+    distance == -1 -> RESOURCES.getString(R.string.status_node_reachability_unreachable)
+    minMtu > 0 || nextHop == name -> RESOURCES.getString(R.string.status_node_reachability_direct_connection)
+    distance > 1 -> RESOURCES.getString(R.string.status_node_reachability_via_format, nextHop)
+    else -> RESOURCES.getString(R.string.status_node_reachability_unknown)
+  }
+
+  companion object {
+    private const val NODE_DUMP_PATTERN_STRING =
+      "(\\S+) " +
+        "id (\\S+) " +
+        "at (\\S+) " +
+        "port (\\S+) " +
+        "cipher (\\S+) " +
+        "digest (\\S+) " +
+        "maclength (\\S+) " +
+        "compression (\\S+) " +
+        "options (\\S+) " +
+        "status (\\S+) " +
+        "nexthop (\\S+) " +
+        "via (\\S+) " +
+        "distance (\\S+) " +
+        "pmtu (\\S+) \\(min (\\S+) max (\\S+)\\)"
+
+    private val NODE_DUMP_PATTERN by lazy { Pattern.compile(NODE_DUMP_PATTERN_STRING) }
+    private val RESOURCES by lazy { App.getResources() }
+
+    fun ofNodeDump(line: String) =
+      ofNodeDump(NODE_DUMP_PATTERN.matcher(line).apply { find() })
+
+    private fun ofNodeDump(matcher: Matcher) = NodeInfo(
+      name = matcher[1],
+      id = matcher[2],
+      ip = matcher[3],
+      port = matcher[4],
+      cipher = matcher[5].toInt(),
+      digest = matcher[6].toInt(),
+      macLength = matcher[7].toInt(),
+      compression = matcher[8].toInt(),
+      options = matcher[9].toInt(16),
+      status = matcher[10].toInt(16),
+      nextHop = matcher[11],
+      via = matcher[12],
+      distance = matcher[13].toInt(),
+      pMtu = matcher[14].toInt(),
+      minMtu = matcher[15].toInt(),
+      maxMtu = matcher[16].toInt()
+    )
+
+    private operator fun Matcher.get(index: Int) = group(index)
+  }
+}
diff --git a/app/src/main/java/org/pacien/tincapp/activities/status/nodes/NodeInfoArrayAdapter.kt b/app/src/main/java/org/pacien/tincapp/activities/status/nodes/NodeInfoArrayAdapter.kt
new file mode 100644
index 0000000..ee103ee
--- /dev/null
+++ b/app/src/main/java/org/pacien/tincapp/activities/status/nodes/NodeInfoArrayAdapter.kt
@@ -0,0 +1,45 @@
+/*
+ * Tinc App, an Android binding and user interface for the tinc mesh VPN daemon
+ * Copyright (C) 2017-2018 Pacien TRAN-GIRARD
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package org.pacien.tincapp.activities.status.nodes
+
+import android.content.Context
+import android.databinding.DataBindingUtil
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ArrayAdapter
+import org.pacien.tincapp.databinding.StatusNodeListItemBinding
+
+/**
+ * @author pacien
+ */
+class NodeInfoArrayAdapter(context: Context?, private val onItemClick: (NodeInfo) -> Unit) : ArrayAdapter<NodeInfo>(context, -1) {
+  private val layoutInflater = LayoutInflater.from(context)!!
+
+  override fun getView(position: Int, convertView: View?, parent: ViewGroup?): View {
+    val binding = when (convertView) {
+      null -> StatusNodeListItemBinding.inflate(layoutInflater, parent, false)
+      else -> DataBindingUtil.getBinding(convertView)!!
+    }
+
+    binding.nodeInfo = getItem(position)
+    binding.onClick = onItemClick
+    return binding.root
+  }
+}
diff --git a/app/src/main/java/org/pacien/tincapp/activities/status/nodes/NodeListFragment.kt b/app/src/main/java/org/pacien/tincapp/activities/status/nodes/NodeListFragment.kt
index 115809e..1f762c0 100644
--- a/app/src/main/java/org/pacien/tincapp/activities/status/nodes/NodeListFragment.kt
+++ b/app/src/main/java/org/pacien/tincapp/activities/status/nodes/NodeListFragment.kt
@@ -26,9 +26,6 @@ import android.support.v7.app.AlertDialog
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import android.widget.AdapterView
-import android.widget.ArrayAdapter
-import android.widget.TextView
 import kotlinx.android.synthetic.main.base.*
 import kotlinx.android.synthetic.main.status_node_info_dialog.view.*
 import kotlinx.android.synthetic.main.status_node_list.*
@@ -47,8 +44,8 @@ class NodeListFragment : Fragment() {
   private val tincCtl = Tinc
   private val netName by lazy { vpnService.getCurrentNetName()!! }
   private val nodeListViewModel by lazy { ViewModelProviders.of(this).get(NodeListViewModel::class.java) }
-  private val nodeListAdapter by lazy { ArrayAdapter<String>(context, R.layout.status_node_list_item) }
-  private val nodeListObserver by lazy { Observer<List<String>> { nodeListAdapter.setElements(it) } }
+  private val nodeListAdapter by lazy { NodeInfoArrayAdapter(context, this::onItemClick) }
+  private val nodeListObserver by lazy { Observer<List<NodeInfo>> { nodeListAdapter.setElements(it) } }
 
   override fun onCreate(savedInstanceState: Bundle?) {
     super.onCreate(savedInstanceState)
@@ -63,15 +60,11 @@ class NodeListFragment : Fragment() {
     status_node_list.hideTopSeparator()
     status_node_list.hideBottomSeparator()
     status_node_list.emptyView = status_node_list_placeholder
-    status_node_list.onItemClickListener = AdapterView.OnItemClickListener(this::onItemClick)
     status_node_list.adapter = nodeListAdapter
   }