mirror of
https://github.com/v2fly/v2ray-core.git
synced 2024-12-22 18:17:52 -05:00
267 lines
4.9 KiB
Go
267 lines
4.9 KiB
Go
package router
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import (
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"context"
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"net"
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"regexp"
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"strings"
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v2net "v2ray.com/core/common/net"
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"v2ray.com/core/common/protocol"
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"v2ray.com/core/proxy"
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)
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type Condition interface {
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Apply(ctx context.Context) bool
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}
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type ConditionChan []Condition
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func NewConditionChan() *ConditionChan {
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var condChan ConditionChan = make([]Condition, 0, 8)
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return &condChan
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}
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func (v *ConditionChan) Add(cond Condition) *ConditionChan {
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*v = append(*v, cond)
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return v
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}
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func (v *ConditionChan) Apply(ctx context.Context) bool {
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for _, cond := range *v {
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if !cond.Apply(ctx) {
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return false
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}
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}
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return true
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}
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func (v *ConditionChan) Len() int {
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return len(*v)
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}
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type AnyCondition []Condition
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func NewAnyCondition() *AnyCondition {
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var anyCond AnyCondition = make([]Condition, 0, 8)
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return &anyCond
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}
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func (v *AnyCondition) Add(cond Condition) *AnyCondition {
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*v = append(*v, cond)
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return v
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}
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func (v *AnyCondition) Apply(ctx context.Context) bool {
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for _, cond := range *v {
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if cond.Apply(ctx) {
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return true
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}
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}
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return false
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}
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func (v *AnyCondition) Len() int {
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return len(*v)
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}
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type PlainDomainMatcher struct {
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pattern string
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}
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func NewPlainDomainMatcher(pattern string) *PlainDomainMatcher {
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return &PlainDomainMatcher{
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pattern: pattern,
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}
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}
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func (v *PlainDomainMatcher) Apply(ctx context.Context) bool {
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dest := proxy.DestinationFromContext(ctx)
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if !dest.Address.Family().IsDomain() {
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return false
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}
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domain := dest.Address.Domain()
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return strings.Contains(domain, v.pattern)
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}
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type RegexpDomainMatcher struct {
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pattern *regexp.Regexp
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}
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func NewRegexpDomainMatcher(pattern string) (*RegexpDomainMatcher, error) {
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r, err := regexp.Compile(pattern)
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if err != nil {
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return nil, err
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}
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return &RegexpDomainMatcher{
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pattern: r,
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}, nil
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}
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func (v *RegexpDomainMatcher) Apply(ctx context.Context) bool {
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dest := proxy.DestinationFromContext(ctx)
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if !dest.Address.Family().IsDomain() {
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return false
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}
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domain := dest.Address.Domain()
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return v.pattern.MatchString(strings.ToLower(domain))
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}
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type CIDRMatcher struct {
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cidr *net.IPNet
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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{
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IP: net.IP(ip),
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Mask: net.CIDRMask(int(mask), len(ip)),
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}
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return &CIDRMatcher{
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cidr: cidr,
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onSource: onSource,
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}, nil
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}
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func (v *CIDRMatcher) Apply(ctx context.Context) bool {
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var dest v2net.Destination
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if v.onSource {
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dest = proxy.SourceFromContext(ctx)
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} else {
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dest = proxy.DestinationFromContext(ctx)
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}
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if !dest.Address.Family().Either(v2net.AddressFamilyIPv4, v2net.AddressFamilyIPv6) {
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return false
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}
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ips := []net.IP{dest.Address.IP()}
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if resolveIPs, ok := proxy.ResolvedIPsFromContext(ctx); ok {
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for _, rip := range resolveIPs {
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ips = append(ips, rip.IP())
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}
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}
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for _, ip := range ips {
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if v.cidr.Contains(ip) {
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return true
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}
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}
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return false
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}
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type IPv4Matcher struct {
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ipv4net *v2net.IPNet
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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,
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onSource: onSource,
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}
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}
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func (v *IPv4Matcher) Apply(ctx context.Context) bool {
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var dest v2net.Destination
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if v.onSource {
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dest = proxy.SourceFromContext(ctx)
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} else {
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dest = proxy.DestinationFromContext(ctx)
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}
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if !dest.Address.Family().Either(v2net.AddressFamilyIPv4) {
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return false
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}
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ips := []net.IP{dest.Address.IP()}
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if resolvedIPs, ok := proxy.ResolvedIPsFromContext(ctx); ok {
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for _, rip := range resolvedIPs {
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ips = append(ips, rip.IP())
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}
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}
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for _, ip := range ips {
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if v.ipv4net.Contains(ip) {
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return true
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}
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}
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return false
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}
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type PortMatcher struct {
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port v2net.PortRange
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}
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func NewPortMatcher(portRange v2net.PortRange) *PortMatcher {
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return &PortMatcher{
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port: portRange,
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}
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}
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func (v *PortMatcher) Apply(ctx context.Context) bool {
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dest := proxy.DestinationFromContext(ctx)
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return v.port.Contains(dest.Port)
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}
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type NetworkMatcher struct {
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network *v2net.NetworkList
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}
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func NewNetworkMatcher(network *v2net.NetworkList) *NetworkMatcher {
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return &NetworkMatcher{
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network: network,
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}
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}
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func (v *NetworkMatcher) Apply(ctx context.Context) bool {
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dest := proxy.DestinationFromContext(ctx)
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return v.network.HasNetwork(dest.Network)
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}
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type UserMatcher struct {
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user []string
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}
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func NewUserMatcher(users []string) *UserMatcher {
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return &UserMatcher{
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user: users,
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}
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}
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func (v *UserMatcher) Apply(ctx context.Context) bool {
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user := protocol.UserFromContext(ctx)
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if user == nil {
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return false
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}
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for _, u := range v.user {
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if u == user.Email {
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return true
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}
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}
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return false
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}
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type InboundTagMatcher struct {
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tags []string
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}
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func NewInboundTagMatcher(tags []string) *InboundTagMatcher {
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return &InboundTagMatcher{
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tags: tags,
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}
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}
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func (v *InboundTagMatcher) Apply(ctx context.Context) bool {
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tag := proxy.InboundTagFromContext(ctx)
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if len(tag) == 0 {
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return false
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}
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for _, t := range v.tags {
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if t == tag {
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return true
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}
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}
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return false
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}
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