diff options
Diffstat (limited to 'src/main/java/io/trygvis/rules/network/Ipv4Cidr.java')
-rw-r--r-- | src/main/java/io/trygvis/rules/network/Ipv4Cidr.java | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/main/java/io/trygvis/rules/network/Ipv4Cidr.java b/src/main/java/io/trygvis/rules/network/Ipv4Cidr.java new file mode 100644 index 0000000..34b3a0b --- /dev/null +++ b/src/main/java/io/trygvis/rules/network/Ipv4Cidr.java @@ -0,0 +1,40 @@ +package io.trygvis.rules.network; + +import java.net.InetAddress; +import java.net.UnknownHostException; +import java.util.ArrayList; +import java.util.Collection; + +public class Ipv4Cidr { + public final int network; + public final int netmask; + public final int size; + public final int bits; + + public Ipv4Cidr(int network, int netmask, int size, int bits) { + this.network = network; + this.netmask = netmask; + this.size = size; + this.bits = bits; + } + + @Override + public String toString() { + return "%d.%d.%d.%d/%d".formatted( + network >> 24 & 0xff, + network >> 16 & 0xff, + network >> 8 & 0xff, + network & 0xff, + bits); + } + + public Collection<Ipv4Address> addresses() { + var end = network + size; + var addresses = new ArrayList<Ipv4Address>(size); + for (int address = network; address < end; address++) { + addresses.add(new Ipv4Address(address)); + } + + return addresses; + } +} |