44 lines
1.3 KiB
Kotlin
44 lines
1.3 KiB
Kotlin
package dorkbox.netUtil
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import dorkbox.executor.Executor
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import java.io.File
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object Arp {
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/**
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* Gets the version number.
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*/
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const val version = "2.9.1"
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// Now setup ARP Proxy for this interface (so ARP requests are answered correctly)
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fun proxyAdd(interfaceName: String) {
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if (Common.OS_LINUX) {
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val file = File("/proc/sys/net/ipv4/conf/$interfaceName/proxy_arp")
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if (!file.readText().contains("1")) {
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file.appendText("1")
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}
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} else {
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throw RuntimeException("NOT IMPL.")
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}
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}
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fun proxyDel(interfaceName: String) {
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if (Common.OS_LINUX) {
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val file = File("/proc/sys/net/ipv4/conf/$interfaceName/proxy_arp")
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file.delete()
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} else {
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throw RuntimeException("NOT IMPL.")
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}
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}
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fun add(interfaceName: String, targetIpAddress: String, targetMacAddress: String) {
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if (Common.OS_LINUX) {
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// have to make sure that the host interface will answer ARP for the "target" ip (normally, it will not for veth interfaces)
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Executor()
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.command("/usr/sbin/arp", "-i", interfaceName, "-s", targetIpAddress, targetMacAddress)
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.startBlocking()
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} else {
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throw RuntimeException("NOT IMPL.")
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}
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}
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}
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