mirror of
https://github.com/meshtastic/Meshtastic-Android.git
synced 2026-04-20 22:23:37 +00:00
87 lines
3.5 KiB
Kotlin
87 lines
3.5 KiB
Kotlin
/*
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* Copyright (c) 2025 Meshtastic LLC
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package com.geeksville.mesh.model
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import com.geeksville.mesh.MeshProtos
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import com.geeksville.mesh.MeshProtos.RouteDiscovery
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import com.geeksville.mesh.Portnums
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val MeshProtos.MeshPacket.fullRouteDiscovery: RouteDiscovery?
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get() =
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with(decoded) {
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if (hasDecoded() && !wantResponse && portnum == Portnums.PortNum.TRACEROUTE_APP) {
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runCatching { RouteDiscovery.parseFrom(payload).toBuilder() }
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.getOrNull()
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?.apply {
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val fullRoute = listOf(to) + routeList + from
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clearRoute()
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addAllRoute(fullRoute)
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val fullRouteBack = listOf(from) + routeBackList + to
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clearRouteBack()
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if (hopStart > 0 && snrBackCount > 0) { // otherwise back route is invalid
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addAllRouteBack(fullRouteBack)
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}
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}
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?.build()
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} else {
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null
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}
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}
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@Suppress("MagicNumber")
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private fun formatTraceroutePath(nodesList: List<String>, snrList: List<Int>): String {
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// nodesList should include both origin and destination nodes
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// origin will not have an SNR value, but destination should
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val snrStr =
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if (snrList.size == nodesList.size - 1) {
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snrList
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} else {
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// use unknown SNR for entire route if snrList has invalid size
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List(nodesList.size - 1) { -128 }
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}
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.map { snr ->
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val str = if (snr == -128) "?" else "${snr / 4f}"
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"⇊ $str dB"
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}
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return nodesList
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.map { userName -> "■ $userName" }
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.flatMapIndexed { i, nodeStr -> if (i == 0) listOf(nodeStr) else listOf(snrStr[i - 1], nodeStr) }
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.joinToString("\n")
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}
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private fun RouteDiscovery.getTracerouteResponse(getUser: (nodeNum: Int) -> String): String = buildString {
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if (routeList.isNotEmpty()) {
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append("Route traced toward destination:\n\n")
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append(formatTraceroutePath(routeList.map(getUser), snrTowardsList))
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}
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if (routeBackList.isNotEmpty()) {
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append("\n\n")
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append("Route traced back to us:\n\n")
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append(formatTraceroutePath(routeBackList.map(getUser), snrBackList))
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}
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}
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fun MeshProtos.MeshPacket.getTracerouteResponse(getUser: (nodeNum: Int) -> String): String? =
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fullRouteDiscovery?.getTracerouteResponse(getUser)
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/** Returns a traceroute response string only when the result is complete (both directions). */
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fun MeshProtos.MeshPacket.getFullTracerouteResponse(getUser: (nodeNum: Int) -> String): String? = fullRouteDiscovery
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?.takeIf { it.routeList.isNotEmpty() && it.routeBackList.isNotEmpty() }
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?.getTracerouteResponse(getUser)
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