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/*
* 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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