77 lines
1.2 KiB
Go
77 lines
1.2 KiB
Go
package common
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import (
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"net"
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C "github.com/Dreamacro/clash/constant"
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)
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type IPCIDROption func(*IPCIDR)
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func WithIPCIDRSourceIP(b bool) IPCIDROption {
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return func(i *IPCIDR) {
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i.isSourceIP = b
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}
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}
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func WithIPCIDRNoResolve(noResolve bool) IPCIDROption {
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return func(i *IPCIDR) {
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i.noResolveIP = noResolve
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}
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}
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type IPCIDR struct {
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*Base
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ipnet *net.IPNet
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adapter string
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isSourceIP bool
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noResolveIP bool
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}
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func (i *IPCIDR) RuleType() C.RuleType {
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if i.isSourceIP {
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return C.SrcIPCIDR
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}
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return C.IPCIDR
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}
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func (i *IPCIDR) Match(metadata *C.Metadata) bool {
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ip := metadata.DstIP
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if i.isSourceIP {
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ip = metadata.SrcIP
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}
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return ip != nil && i.ipnet.Contains(ip)
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}
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func (i *IPCIDR) Adapter() string {
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return i.adapter
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}
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func (i *IPCIDR) Payload() string {
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return i.ipnet.String()
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}
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func (i *IPCIDR) ShouldResolveIP() bool {
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return !i.noResolveIP
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}
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func NewIPCIDR(s string, adapter string, opts ...IPCIDROption) (*IPCIDR, error) {
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_, ipnet, err := net.ParseCIDR(s)
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if err != nil {
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return nil, errPayload
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}
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ipcidr := &IPCIDR{
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Base: &Base{},
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ipnet: ipnet,
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adapter: adapter,
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}
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for _, o := range opts {
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o(ipcidr)
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}
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return ipcidr, nil
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}
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var _ C.Rule = (*IPCIDR)(nil)
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