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v2fly/app/router/condition.go

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package router
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import (
"net"
"regexp"
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"strings"
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v2net "v2ray.com/core/common/net"
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"v2ray.com/core/proxy"
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)
type Condition interface {
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Apply(session *proxy.SessionInfo) bool
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}
type ConditionChan []Condition
func NewConditionChan() *ConditionChan {
var condChan ConditionChan = make([]Condition, 0, 8)
return &condChan
}
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func (v *ConditionChan) Add(cond Condition) *ConditionChan {
*v = append(*v, cond)
return v
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}
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func (v *ConditionChan) Apply(session *proxy.SessionInfo) bool {
for _, cond := range *v {
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if !cond.Apply(session) {
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return false
}
}
return true
}
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func (v *ConditionChan) Len() int {
return len(*v)
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}
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type AnyCondition []Condition
func NewAnyCondition() *AnyCondition {
var anyCond AnyCondition = make([]Condition, 0, 8)
return &anyCond
}
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func (v *AnyCondition) Add(cond Condition) *AnyCondition {
*v = append(*v, cond)
return v
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}
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func (v *AnyCondition) Apply(session *proxy.SessionInfo) bool {
for _, cond := range *v {
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if cond.Apply(session) {
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return true
}
}
return false
}
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func (v *AnyCondition) Len() int {
return len(*v)
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}
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type PlainDomainMatcher struct {
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pattern string
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}
func NewPlainDomainMatcher(pattern string) *PlainDomainMatcher {
return &PlainDomainMatcher{
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pattern: pattern,
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}
}
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func (v *PlainDomainMatcher) Apply(session *proxy.SessionInfo) bool {
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dest := session.Destination
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if !dest.Address.Family().IsDomain() {
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return false
}
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domain := dest.Address.Domain()
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return strings.Contains(domain, v.pattern)
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}
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
}
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func (v *RegexpDomainMatcher) Apply(session *proxy.SessionInfo) bool {
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dest := session.Destination
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if !dest.Address.Family().IsDomain() {
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return false
}
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domain := dest.Address.Domain()
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return v.pattern.MatchString(strings.ToLower(domain))
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}
type CIDRMatcher struct {
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cidr *net.IPNet
onSource bool
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}
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func NewCIDRMatcher(ip []byte, mask uint32, onSource bool) (*CIDRMatcher, error) {
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cidr := &net.IPNet{
IP: net.IP(ip),
Mask: net.CIDRMask(int(mask), len(ip)),
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}
return &CIDRMatcher{
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cidr: cidr,
onSource: onSource,
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}, nil
}
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func (v *CIDRMatcher) Apply(session *proxy.SessionInfo) bool {
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dest := session.Destination
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if v.onSource {
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dest = session.Source
}
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if !dest.Address.Family().Either(v2net.AddressFamilyIPv4, v2net.AddressFamilyIPv6) {
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return false
}
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return v.cidr.Contains(dest.Address.IP())
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}
type IPv4Matcher struct {
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ipv4net *v2net.IPNet
onSource bool
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}
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func NewIPv4Matcher(ipnet *v2net.IPNet, onSource bool) *IPv4Matcher {
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return &IPv4Matcher{
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ipv4net: ipnet,
onSource: onSource,
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}
}
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func (v *IPv4Matcher) Apply(session *proxy.SessionInfo) bool {
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dest := session.Destination
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if v.onSource {
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dest = session.Source
}
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if !dest.Address.Family().Either(v2net.AddressFamilyIPv4) {
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return false
}
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return v.ipv4net.Contains(dest.Address.IP())
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}
type PortMatcher struct {
port v2net.PortRange
}
func NewPortMatcher(portRange v2net.PortRange) *PortMatcher {
return &PortMatcher{
port: portRange,
}
}
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func (v *PortMatcher) Apply(session *proxy.SessionInfo) bool {
return v.port.Contains(session.Destination.Port)
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}
type NetworkMatcher struct {
network *v2net.NetworkList
}
func NewNetworkMatcher(network *v2net.NetworkList) *NetworkMatcher {
return &NetworkMatcher{
network: network,
}
}
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func (v *NetworkMatcher) Apply(session *proxy.SessionInfo) bool {
return v.network.HasNetwork(session.Destination.Network)
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}
type UserMatcher struct {
user []string
}
func NewUserMatcher(users []string) *UserMatcher {
return &UserMatcher{
user: users,
}
}
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func (v *UserMatcher) Apply(session *proxy.SessionInfo) bool {
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if session.User == nil {
return false
}
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for _, u := range v.user {
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if u == session.User.Email {
return true
}
}
return false
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}
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type InboundTagMatcher struct {
tags []string
}
func NewInboundTagMatcher(tags []string) *InboundTagMatcher {
return &InboundTagMatcher{
tags: tags,
}
}
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func (v *InboundTagMatcher) Apply(session *proxy.SessionInfo) bool {
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if session.Inbound == nil || len(session.Inbound.Tag) == 0 {
return false
}
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for _, t := range v.tags {
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if t == session.Inbound.Tag {
return true
}
}
return false
}