brianhansonxyz/vpnhotspotmod
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Prevent failing when other apps are holding the xtables lock

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This commit is contained in:
Mygod
2018-01-13 12:38:57 +08:00
parent 795d35c1ee
commit ddb56affc3
1 changed files with 15 additions and 15 deletions
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30
mobile/src/main/java/be/mygod/vpnhotspot/Routing.kt
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@@ -10,10 +10,10 @@ import java.util.*
class Routing(private val upstream: String, val downstream: String, ownerAddress: InetAddress? = null) {
companion object {
fun clean() = noisySu(
"iptables -t nat -F PREROUTING",
"while iptables -D FORWARD -j vpnhotspot_fwd; do done",
"iptables -F vpnhotspot_fwd",
"iptables -X vpnhotspot_fwd",
"iptables -w 1 -t nat -F PREROUTING",
"while iptables -w 1 -D FORWARD -j vpnhotspot_fwd; do done",
"iptables -w 1 -F vpnhotspot_fwd",
"iptables -w 1 -X vpnhotspot_fwd",
"while ip rule del priority 17900; do done")
}
@@ -47,22 +47,22 @@ class Routing(private val upstream: String, val downstream: String, ownerAddress
}
fun forward(): Routing {
startScript.add("iptables -N vpnhotspot_fwd")
startScript.add("iptables -A vpnhotspot_fwd -i $upstream -o $downstream -m state --state ESTABLISHED,RELATED -j ACCEPT")
startScript.add("iptables -A vpnhotspot_fwd -i $downstream -o $upstream -j ACCEPT")
startScript.add("iptables -I FORWARD -j vpnhotspot_fwd")
stopScript.addFirst("iptables -X vpnhotspot_fwd")
stopScript.addFirst("iptables -F vpnhotspot_fwd")
stopScript.addFirst("iptables -D FORWARD -j vpnhotspot_fwd")
startScript.add("iptables -w 1 -N vpnhotspot_fwd")
startScript.add("iptables -w 1 -A vpnhotspot_fwd -i $upstream -o $downstream -m state --state ESTABLISHED,RELATED -j ACCEPT")
startScript.add("iptables -w 1 -A vpnhotspot_fwd -i $downstream -o $upstream -j ACCEPT")
startScript.add("iptables -w 1 -I FORWARD -j vpnhotspot_fwd")
stopScript.addFirst("iptables -w 1 -X vpnhotspot_fwd")
stopScript.addFirst("iptables -w 1 -F vpnhotspot_fwd")
stopScript.addFirst("iptables -w 1 -D FORWARD -j vpnhotspot_fwd")
return this
}
fun dnsRedirect(dns: String): Routing {
val hostAddress = hostAddress.hostAddress
startScript.add("iptables -t nat -A PREROUTING -i $downstream -p tcp -d $hostAddress --dport 53 -j DNAT --to-destination $dns")
startScript.add("iptables -t nat -A PREROUTING -i $downstream -p udp -d $hostAddress --dport 53 -j DNAT --to-destination $dns")
stopScript.addFirst("iptables -t nat -D PREROUTING -i $downstream -p tcp -d $hostAddress --dport 53 -j DNAT --to-destination $dns")
stopScript.addFirst("iptables -t nat -D PREROUTING -i $downstream -p udp -d $hostAddress --dport 53 -j DNAT --to-destination $dns")
startScript.add("iptables -w 1 -t nat -A PREROUTING -i $downstream -p tcp -d $hostAddress --dport 53 -j DNAT --to-destination $dns")
startScript.add("iptables -w 1 -t nat -A PREROUTING -i $downstream -p udp -d $hostAddress --dport 53 -j DNAT --to-destination $dns")
stopScript.addFirst("iptables -w 1 -t nat -D PREROUTING -i $downstream -p tcp -d $hostAddress --dport 53 -j DNAT --to-destination $dns")
stopScript.addFirst("iptables -w 1 -t nat -D PREROUTING -i $downstream -p udp -d $hostAddress --dport 53 -j DNAT --to-destination $dns")
return this
}