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mirror of https://github.com/v2fly/v2ray-core.git synced 2024-12-23 02:26:49 -05:00
v2fly/app/router/rules/condition.go
2016-08-20 20:55:45 +02:00

170 lines
3.3 KiB
Go

package rules
import (
"net"
"regexp"
"strings"
v2net "v2ray.com/core/common/net"
)
type Condition interface {
Apply(dest v2net.Destination) bool
}
type ConditionChan []Condition
func NewConditionChan() *ConditionChan {
var condChan ConditionChan = make([]Condition, 0, 8)
return &condChan
}
func (this *ConditionChan) Add(cond Condition) *ConditionChan {
*this = append(*this, cond)
return this
}
func (this *ConditionChan) Apply(dest v2net.Destination) bool {
for _, cond := range *this {
if !cond.Apply(dest) {
return false
}
}
return true
}
func (this *ConditionChan) Len() int {
return len(*this)
}
type AnyCondition []Condition
func NewAnyCondition() *AnyCondition {
var anyCond AnyCondition = make([]Condition, 0, 8)
return &anyCond
}
func (this *AnyCondition) Add(cond Condition) *AnyCondition {
*this = append(*this, cond)
return this
}
func (this *AnyCondition) Apply(dest v2net.Destination) bool {
for _, cond := range *this {
if cond.Apply(dest) {
return true
}
}
return false
}
func (this *AnyCondition) Len() int {
return len(*this)
}
type PlainDomainMatcher struct {
pattern string
}
func NewPlainDomainMatcher(pattern string) *PlainDomainMatcher {
return &PlainDomainMatcher{
pattern: pattern,
}
}
func (this *PlainDomainMatcher) Apply(dest v2net.Destination) bool {
if !dest.Address().Family().IsDomain() {
return false
}
domain := dest.Address().Domain()
return strings.Contains(domain, this.pattern)
}
type RegexpDomainMatcher struct {
pattern *regexp.Regexp
}
func NewRegexpDomainMatcher(pattern string) (*RegexpDomainMatcher, error) {
r, err := regexp.Compile(pattern)
if err != nil {
return nil, err
}
return &RegexpDomainMatcher{
pattern: r,
}, nil
}
func (this *RegexpDomainMatcher) Apply(dest v2net.Destination) bool {
if !dest.Address().Family().IsDomain() {
return false
}
domain := dest.Address().Domain()
return this.pattern.MatchString(strings.ToLower(domain))
}
type CIDRMatcher struct {
cidr *net.IPNet
}
func NewCIDRMatcher(ipnet string) (*CIDRMatcher, error) {
_, cidr, err := net.ParseCIDR(ipnet)
if err != nil {
return nil, err
}
return &CIDRMatcher{
cidr: cidr,
}, nil
}
func (this *CIDRMatcher) Apply(dest v2net.Destination) bool {
if !dest.Address().Family().Either(v2net.AddressFamilyIPv4, v2net.AddressFamilyIPv6) {
return false
}
return this.cidr.Contains(dest.Address().IP())
}
type IPv4Matcher struct {
ipv4net *v2net.IPNet
}
func NewIPv4Matcher(ipnet *v2net.IPNet) *IPv4Matcher {
return &IPv4Matcher{
ipv4net: ipnet,
}
}
func (this *IPv4Matcher) Apply(dest v2net.Destination) bool {
if !dest.Address().Family().Either(v2net.AddressFamilyIPv4) {
return false
}
return this.ipv4net.Contains(dest.Address().IP())
}
type PortMatcher struct {
port v2net.PortRange
}
func NewPortMatcher(portRange v2net.PortRange) *PortMatcher {
return &PortMatcher{
port: portRange,
}
}
func (this *PortMatcher) Apply(dest v2net.Destination) bool {
return this.port.Contains(dest.Port())
}
type NetworkMatcher struct {
network *v2net.NetworkList
}
func NewNetworkMatcher(network *v2net.NetworkList) *NetworkMatcher {
return &NetworkMatcher{
network: network,
}
}
func (this *NetworkMatcher) Apply(dest v2net.Destination) bool {
return this.network.HasNetwork(dest.Network())
}