54 lines
1.2 KiB
Go
54 lines
1.2 KiB
Go
package ipaddr
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import (
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"fmt"
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"net"
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"reflect"
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)
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// IsAny checks if the given ip address is an IPv4 or IPv6 ANY address. ip
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// can be either a *net.IP or a string. It panics on another type.
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func IsAny(ip interface{}) bool {
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return IsAnyV4(ip) || IsAnyV6(ip)
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}
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// IsAnyV4 checks if the given ip address is an IPv4 ANY address. ip
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// can be either a *net.IP or a string. It panics on another type.
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func IsAnyV4(ip interface{}) bool {
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return iptos(ip) == "0.0.0.0"
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}
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// IsAnyV6 checks if the given ip address is an IPv6 ANY address. ip
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// can be either a *net.IP or a string. It panics on another type.
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func IsAnyV6(ip interface{}) bool {
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ips := iptos(ip)
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return ips == "::" || ips == "[::]"
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}
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func iptos(ip interface{}) string {
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if ip == nil || reflect.TypeOf(ip).Kind() == reflect.Ptr && reflect.ValueOf(ip).IsNil() {
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return ""
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}
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switch x := ip.(type) {
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case string:
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return x
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case *string:
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if x == nil {
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return ""
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}
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return *x
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case net.IP:
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return x.String()
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case *net.IP:
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return x.String()
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case *net.IPAddr:
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return x.IP.String()
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case *net.TCPAddr:
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return x.IP.String()
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case *net.UDPAddr:
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return x.IP.String()
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default:
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panic(fmt.Sprintf("invalid type: %T", ip))
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}
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}
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