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ipv4.go
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/
ipv4.go
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package checker
import (
"net"
"reflect"
)
// CheckerIPV4 is the name of the checker.
const CheckerIPV4 = "ipv4"
// ResultNotIPV4 indicates that the given value is not an IPv4 address.
const ResultNotIPV4 = "NOT_IP_V4"
// IsIPV4 checks if the given value is an IPv4 address.
func IsIPV4(value string) Result {
ip := net.ParseIP(value)
if ip == nil {
return ResultNotIPV4
}
if ip.To4() == nil {
return ResultNotIPV4
}
return ResultValid
}
// makeIPV4 makes a checker function for the ipV4 checker.
func makeIPV4(_ string) CheckFunc {
return checkIPV4
}
// checkIPV4 checks if the given value is an IPv4 address.
func checkIPV4(value, _ reflect.Value) Result {
if value.Kind() != reflect.String {
panic("string expected")
}
return IsIPV4(value.String())
}