From 4702b7441b65173a1e0c7f0b560e672d06ee4e4d Mon Sep 17 00:00:00 2001
From: pacien
Date: Tue, 21 Aug 2018 01:35:06 +0200
Subject: Show node reachability in node list

---
 .../tincapp/activities/status/nodes/NodeInfo.kt    | 99 ++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 app/src/main/java/org/pacien/tincapp/activities/status/nodes/NodeInfo.kt

(limited to 'app/src/main/java/org/pacien/tincapp/activities/status/nodes/NodeInfo.kt')

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)
+  }
+}
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