brianhansonxyz/vpnhotspotmod
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Refine dev matching

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This commit is contained in:
Mygod
2020-06-28 03:31:04 +08:00
parent d909cc6903
commit 80d9d6d00e
1 changed files with 8 additions and 8 deletions
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16
mobile/src/main/java/be/mygod/vpnhotspot/net/IpNeighbour.kt
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@@ -37,22 +37,22 @@ data class IpNeighbour(val ip: InetAddress, val dev: String, val lladdr: MacAddr
*/
private val devFallback = "^if(\\d+)\$".toRegex()
private fun populateList(base: IpNeighbour): List<IpNeighbour> {
val devParser = devFallback.matchEntire(base.dev)
private fun substituteDev(dev: String): Set<String> {
val devParser = devFallback.matchEntire(dev)
if (devParser != null) try {
val index = devParser.groupValues[1].toInt()
val iface = NetworkInterface.getByIndex(index)
if (iface == null) Timber.w("Failed to find network interface #$index")
else return listOf(base.copy(dev = iface.name), base)
else return setOf(dev, iface.name)
} catch (_: SocketException) { }
return listOf(base)
return setOf(dev)
}
fun parse(line: String, fullMode: Boolean): List<IpNeighbour> {
return if (line.isBlank()) emptyList() else try {
val match = parser.matchEntire(line)!!
val ip = parseNumericAddress(match.groupValues[2]) // by regex, ip is non-empty
val dev = match.groupValues[3] // by regex, dev is non-empty as well
val devs = substituteDev(match.groupValues[3]) // by regex, dev is non-empty as well
val state = if (match.groupValues[1].isNotEmpty()) State.DELETING else when (match.groupValues[7]) {
"", "INCOMPLETE" -> State.INCOMPLETE
"REACHABLE", "DELAY", "STALE", "PROBE", "PERMANENT" -> State.VALID
@@ -63,7 +63,7 @@ data class IpNeighbour(val ip: InetAddress, val dev: String, val lladdr: MacAddr
var lladdr = MacAddressCompat.ALL_ZEROS_ADDRESS
if (!fullMode && state != State.VALID) {
// skip parsing lladdr to avoid requesting root
return populateList(IpNeighbour(ip, dev, lladdr, State.DELETING))
return devs.map { IpNeighbour(ip, it, lladdr, State.DELETING) }
}
if (match.groups[4] != null) try {
lladdr = MacAddressCompat.fromString(match.groupValues[5])
@@ -78,7 +78,7 @@ data class IpNeighbour(val ip: InetAddress, val dev: String, val lladdr: MacAddr
state != State.DELETING) try {
val list = arp()
.asSequence()
.filter { parseNumericAddress(it[ARP_IP_ADDRESS]) == ip && it[ARP_DEVICE] == dev }
.filter { parseNumericAddress(it[ARP_IP_ADDRESS]) == ip && it[ARP_DEVICE] in devs }
.map { it[ARP_HW_ADDRESS] }
.distinct()
.toList()
@@ -90,7 +90,7 @@ data class IpNeighbour(val ip: InetAddress, val dev: String, val lladdr: MacAddr
} catch (e: IllegalArgumentException) {
Timber.w(e)
}
populateList(IpNeighbour(ip, dev, lladdr, state))
devs.map { IpNeighbour(ip, it, lladdr, state) }
} catch (e: Exception) {
Timber.w(IllegalArgumentException("Unable to parse line: $line", e))
emptyList<IpNeighbour>()