/
LocalDnsService.kt
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/
LocalDnsService.kt
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/*******************************************************************************
* *
* Copyright (C) 2017 by Max Lv <max.c.lv@gmail.com> *
* Copyright (C) 2017 by Mygod Studio <contact-shadowsocks-android@mygod.be> *
* *
* 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 <http://www.gnu.org/licenses/>. *
* *
*******************************************************************************/
package com.github.shadowsocks.bg
import com.github.shadowsocks.Core.app
import com.github.shadowsocks.acl.Acl
import com.github.shadowsocks.core.R
import com.github.shadowsocks.net.HostsFile
import com.github.shadowsocks.net.LocalDnsServer
import com.github.shadowsocks.net.Socks5Endpoint
import com.github.shadowsocks.net.Subnet
import com.github.shadowsocks.preference.DataStore
import com.github.shadowsocks.utils.Key
import kotlinx.coroutines.CoroutineScope
import java.net.InetSocketAddress
import java.net.URI
import java.util.*
object LocalDnsService {
private val googleApisTester =
"(^|\\.)googleapis(\\.[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?){1,2}\$".toRegex()
private val chinaIpList by lazy {
app.resources.openRawResource(R.raw.china_ip_list).bufferedReader()
.lineSequence().map(Subnet.Companion::fromString).filterNotNull().toList()
}
private val servers = WeakHashMap<Interface, LocalDnsServer>()
interface Interface : BaseService.Interface {
override suspend fun startProcesses() {
super.startProcesses()
val profile = data.proxy!!.profile
val dns = URI("dns://${profile.remoteDns}")
LocalDnsServer(this::resolver,
Socks5Endpoint(dns.host, if (dns.port < 0) 53 else dns.port),
DataStore.proxyAddress,
HostsFile(DataStore.publicStore.getString(Key.hosts) ?: "")).apply {
tcp = !profile.udpdns
when (profile.route) {
Acl.BYPASS_CHN, Acl.BYPASS_LAN_CHN, Acl.GFWLIST, Acl.CUSTOM_RULES -> {
remoteDomainMatcher = googleApisTester
localIpMatcher = chinaIpList
}
Acl.CHINALIST -> { }
else -> forwardOnly = true
}
}.also { servers[this] = it }.start(InetSocketAddress(DataStore.listenAddress, DataStore.portLocalDns))
}
override fun killProcesses(scope: CoroutineScope) {
servers.remove(this)?.shutdown(scope)
super.killProcesses(scope)
}
}
}