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// +build !confonly
package router
import (
"strings"
"go.starlark.net/starlark"
"go.starlark.net/syntax"
"v2ray.com/core/common/net"
"v2ray.com/core/common/strmatcher"
)
type Condition interface {
Apply(ctx *Context) bool
}
type ConditionChan []Condition
func NewConditionChan() *ConditionChan {
var condChan ConditionChan = make([]Condition, 0, 8)
return &condChan
}
func (v *ConditionChan) Add(cond Condition) *ConditionChan {
*v = append(*v, cond)
return v
}
func (v *ConditionChan) Apply(ctx *Context) bool {
for _, cond := range *v {
if !cond.Apply(ctx) {
return false
}
}
return true
}
func (v *ConditionChan) Len() int {
return len(*v)
}
var matcherTypeMap = map[Domain_Type]strmatcher.Type{
Domain_Plain: strmatcher.Substr,
Domain_Regex: strmatcher.Regex,
Domain_Domain: strmatcher.Domain,
Domain_Full: strmatcher.Full,
}
func domainToMatcher(domain *Domain) (strmatcher.Matcher, error) {
matcherType, f := matcherTypeMap[domain.Type]
if !f {
return nil, newError("unsupported domain type", domain.Type)
}
matcher, err := matcherType.New(domain.Value)
if err != nil {
return nil, newError("failed to create domain matcher").Base(err)
}
return matcher, nil
}
type DomainMatcher struct {
matchers strmatcher.IndexMatcher
}
func NewDomainMatcher(domains []*Domain) (*DomainMatcher, error) {
g := new(strmatcher.MatcherGroup)
for _, d := range domains {
m, err := domainToMatcher(d)
if err != nil {
return nil, err
}
g.Add(m)
}
return &DomainMatcher{
matchers: g,
}, nil
}
func (m *DomainMatcher) ApplyDomain(domain string) bool {
return m.matchers.Match(domain) > 0
}
func (m *DomainMatcher) Apply(ctx *Context) bool {
if ctx.Outbound == nil || !ctx.Outbound.Target.IsValid() {
return false
}
dest := ctx.Outbound.Target
if !dest.Address.Family().IsDomain() {
return false
}
return m.ApplyDomain(dest.Address.Domain())
}
func getIPsFromSource(ctx *Context) []net.IP {
if ctx.Inbound == nil || !ctx.Inbound.Source.IsValid() {
return nil
}
dest := ctx.Inbound.Source
if dest.Address.Family().IsDomain() {
return nil
}
return []net.IP{dest.Address.IP()}
}
func getIPsFromTarget(ctx *Context) []net.IP {
return ctx.GetTargetIPs()
}
type MultiGeoIPMatcher struct {
matchers []*GeoIPMatcher
ipFunc func(*Context) []net.IP
}
func NewMultiGeoIPMatcher(geoips []*GeoIP, onSource bool) (*MultiGeoIPMatcher, error) {
var matchers []*GeoIPMatcher
for _, geoip := range geoips {
matcher, err := globalGeoIPContainer.Add(geoip)
if err != nil {
return nil, err
}
matchers = append(matchers, matcher)
}
matcher := &MultiGeoIPMatcher{
matchers: matchers,
}
if onSource {
matcher.ipFunc = getIPsFromSource
} else {
matcher.ipFunc = getIPsFromTarget
}
return matcher, nil
}
func (m *MultiGeoIPMatcher) Apply(ctx *Context) bool {
ips := m.ipFunc(ctx)
for _, ip := range ips {
for _, matcher := range m.matchers {
if matcher.Match(ip) {
return true
}
}
}
return false
}
type PortMatcher struct {
port net.MemoryPortList
}
func NewPortMatcher(list *net.PortList) *PortMatcher {
return &PortMatcher{
port: net.PortListFromProto(list),
}
}
func (v *PortMatcher) Apply(ctx *Context) bool {
if ctx.Outbound == nil || !ctx.Outbound.Target.IsValid() {
return false
}
return v.port.Contains(ctx.Outbound.Target.Port)
}
type NetworkMatcher struct {
list [8]bool
}
func NewNetworkMatcher(network []net.Network) NetworkMatcher {
var matcher NetworkMatcher
for _, n := range network {
matcher.list[int(n)] = true
}
return matcher
}
func (v NetworkMatcher) Apply(ctx *Context) bool {
if ctx.Outbound == nil || !ctx.Outbound.Target.IsValid() {
return false
}
return v.list[int(ctx.Outbound.Target.Network)]
}
type UserMatcher struct {
user []string
}
func NewUserMatcher(users []string) *UserMatcher {
usersCopy := make([]string, 0, len(users))
for _, user := range users {
if len(user) > 0 {
usersCopy = append(usersCopy, user)
}
}
return &UserMatcher{
user: usersCopy,
}
}
func (v *UserMatcher) Apply(ctx *Context) bool {
if ctx.Inbound == nil {
return false
}
user := ctx.Inbound.User
if user == nil {
return false
}
for _, u := range v.user {
if u == user.Email {
return true
}
}
return false
}
type InboundTagMatcher struct {
tags []string
}
func NewInboundTagMatcher(tags []string) *InboundTagMatcher {
tagsCopy := make([]string, 0, len(tags))
for _, tag := range tags {
if len(tag) > 0 {
tagsCopy = append(tagsCopy, tag)
}
}
return &InboundTagMatcher{
tags: tagsCopy,
}
}
func (v *InboundTagMatcher) Apply(ctx *Context) bool {
if ctx.Inbound == nil || len(ctx.Inbound.Tag) == 0 {
return false
}
tag := ctx.Inbound.Tag
for _, t := range v.tags {
if t == tag {
return true
}
}
return false
}
type ProtocolMatcher struct {
protocols []string
}
func NewProtocolMatcher(protocols []string) *ProtocolMatcher {
pCopy := make([]string, 0, len(protocols))
for _, p := range protocols {
if len(p) > 0 {
pCopy = append(pCopy, p)
}
}
return &ProtocolMatcher{
protocols: pCopy,
}
}
func (m *ProtocolMatcher) Apply(ctx *Context) bool {
if ctx.Content == nil {
return false
}
protocol := ctx.Content.Protocol
for _, p := range m.protocols {
if strings.HasPrefix(protocol, p) {
return true
}
}
return false
}
type AttributeMatcher struct {
program *starlark.Program
}
func NewAttributeMatcher(code string) (*AttributeMatcher, error) {
starFile, err := syntax.Parse("attr.star", "satisfied=("+code+")", 0)
if err != nil {
return nil, newError("attr rule").Base(err)
}
p, err := starlark.FileProgram(starFile, func(name string) bool {
if name == "attrs" {
return true
}
return false
})
if err != nil {
return nil, err
}
return &AttributeMatcher{
program: p,
}, nil
}
func (m *AttributeMatcher) Match(attrs map[string]interface{}) bool {
attrsDict := new(starlark.Dict)
for key, value := range attrs {
var starValue starlark.Value
switch value := value.(type) {
case string:
starValue = starlark.String(value)
}
if starValue != nil {
attrsDict.SetKey(starlark.String(key), starValue)
}
}
predefined := make(starlark.StringDict)
predefined["attrs"] = attrsDict
thread := &starlark.Thread{
Name: "matcher",
}
results, err := m.program.Init(thread, predefined)
if err != nil {
newError("attr matcher").Base(err).WriteToLog()
}
satisfied := results["satisfied"]
return satisfied != nil && bool(satisfied.Truth())
}
func (m *AttributeMatcher) Apply(ctx *Context) bool {
if ctx.Content == nil {
return false
}
return m.Match(ctx.Content.Attributes)
}
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