37 lines
577 B
Go
37 lines
577 B
Go
/* netcheck: check whether a given network or address overlaps with any existing routes */
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package main
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import (
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"fmt"
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"net"
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"os"
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weavenet "github.com/weaveworks/weave/net"
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)
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func fatal(err error) {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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func main() {
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if len(os.Args) <= 1 {
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os.Exit(0)
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}
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cidrStr := os.Args[1]
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addr, ipnet, err := net.ParseCIDR(cidrStr)
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if err != nil {
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fatal(err)
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}
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if ipnet.IP.Equal(addr) {
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err = weavenet.CheckNetworkFree(ipnet)
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} else {
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err = weavenet.CheckAddressOverlap(addr)
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}
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if err != nil {
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fatal(err)
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}
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os.Exit(0)
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}
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