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110 lines
2.1 KiB
110 lines
2.1 KiB
10 years ago
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package network
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import (
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//Builtin
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"net"
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"strings"
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"strconv"
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)
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const (
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ozDefaultInterfaceBridgeBase = "oz"
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ozDefaultInterfaceBridge = ozDefaultInterfaceBridgeBase + "0"
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ozDefaultInterfacePrefix = "veth"
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ozDefaultInterfaceInternal = "eth0"
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ozMaxRandTries = 3
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)
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type HostNetwork struct {
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// Host bridge IP address
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hostip net.IP
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// Gateway ip (bridge ip)
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gateway net.IP
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// Bridge netmask
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netmask net.IP
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// Broadcast ip
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broadcast net.IP
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// IP class (ie: /24)
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class string
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// Minimum longip available ip
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min uint64
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// Maximum longip available ip
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max uint64
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}
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type SandboxNetwork struct {
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// Name of the veth in the host
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vethHost string
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// Temporary name of the guest' veth in the host
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vethGuest string
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// Guest ip address
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ip string
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host *HostNetwork
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}
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var privateNetworkRanges []string
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func init() {
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privateNetworkRanges = []string{
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// RFC1918 Private ranges
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"10.0.0.0/8",
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"172.16.0.0/12",
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"192.168.0.0/16",
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// Documentation / Testnet 2
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"192.51.100.0/24",
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// Documentation/ Testnet
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"192.0.2.0/24",
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// Inter-network communication
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"192.18.0.0/15",
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// Documentation / Testnet 3
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"203.0.113.0/24",
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// Carrier grade NAT
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"100.64.0.0/10",
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}
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}
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// Convert longip to net.IP
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func inet_ntoa(ipnr uint64) net.IP {
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var bytes [4]byte
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bytes[0] = byte(ipnr & 0xFF)
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bytes[1] = byte((ipnr >> 8) & 0xFF)
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bytes[2] = byte((ipnr >> 16) & 0xFF)
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bytes[3] = byte((ipnr >> 24) & 0xFF)
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return net.IPv4(bytes[3], bytes[2], bytes[1], bytes[0])
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}
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// Convert net.IP to longip
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func inet_aton(ipnr net.IP) uint64 {
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bits := strings.Split(ipnr.String(), ".")
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b0, _ := strconv.Atoi(bits[0])
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b1, _ := strconv.Atoi(bits[1])
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b2, _ := strconv.Atoi(bits[2])
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b3, _ := strconv.Atoi(bits[3])
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var sum uint64
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sum += uint64(b0) << 24
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sum += uint64(b1) << 16
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sum += uint64(b2) << 8
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sum += uint64(b3)
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return sum
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}
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func net_getbroadcast(bIP net.IP, ipMask net.IPMask) net.IP {
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bMask := []byte(ipMask)
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byteIP := bIP.To4()
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return net.IPv4(
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byteIP[0]|(bMask[0]^0xFF),
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byteIP[1]|(bMask[1]^0xFF),
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byteIP[2]|(bMask[2]^0xFF),
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byteIP[3]|(bMask[3]^0xFF))
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}
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