mirror of
https://github.com/XTLS/Xray-core.git
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Feat: add disableFallback & skipFallback option for DNS client (#489)
This commit is contained in:
parent
70b63e21a5
commit
6e902b24ae
6 changed files with 191 additions and 145 deletions
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@ -1,7 +1,7 @@
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// Code generated by protoc-gen-go. DO NOT EDIT.
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// versions:
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// protoc-gen-go v1.25.0
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// protoc v3.15.6
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// protoc v3.15.8
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// source: app/dns/config.proto
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package dns
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@ -184,6 +184,7 @@ type NameServer struct {
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Address *net.Endpoint `protobuf:"bytes,1,opt,name=address,proto3" json:"address,omitempty"`
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ClientIp []byte `protobuf:"bytes,5,opt,name=client_ip,json=clientIp,proto3" json:"client_ip,omitempty"`
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SkipFallback bool `protobuf:"varint,6,opt,name=skipFallback,proto3" json:"skipFallback,omitempty"`
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PrioritizedDomain []*NameServer_PriorityDomain `protobuf:"bytes,2,rep,name=prioritized_domain,json=prioritizedDomain,proto3" json:"prioritized_domain,omitempty"`
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Geoip []*router.GeoIP `protobuf:"bytes,3,rep,name=geoip,proto3" json:"geoip,omitempty"`
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OriginalRules []*NameServer_OriginalRule `protobuf:"bytes,4,rep,name=original_rules,json=originalRules,proto3" json:"original_rules,omitempty"`
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@ -235,6 +236,13 @@ func (x *NameServer) GetClientIp() []byte {
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return nil
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}
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func (x *NameServer) GetSkipFallback() bool {
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if x != nil {
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return x.SkipFallback
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}
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return false
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}
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func (x *NameServer) GetPrioritizedDomain() []*NameServer_PriorityDomain {
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if x != nil {
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return x.PrioritizedDomain
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@ -280,9 +288,10 @@ type Config struct {
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StaticHosts []*Config_HostMapping `protobuf:"bytes,4,rep,name=static_hosts,json=staticHosts,proto3" json:"static_hosts,omitempty"`
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// Tag is the inbound tag of DNS client.
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Tag string `protobuf:"bytes,6,opt,name=tag,proto3" json:"tag,omitempty"`
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// DisableCache Disable DNS cache
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CacheStrategy CacheStrategy `protobuf:"varint,8,opt,name=cache_strategy,json=cacheStrategy,proto3,enum=xray.app.dns.CacheStrategy" json:"cache_strategy,omitempty"`
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QueryStrategy QueryStrategy `protobuf:"varint,9,opt,name=query_strategy,json=queryStrategy,proto3,enum=xray.app.dns.QueryStrategy" json:"query_strategy,omitempty"`
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// DisableCache disables DNS cache
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CacheStrategy CacheStrategy `protobuf:"varint,8,opt,name=cache_strategy,json=cacheStrategy,proto3,enum=xray.app.dns.CacheStrategy" json:"cache_strategy,omitempty"`
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QueryStrategy QueryStrategy `protobuf:"varint,9,opt,name=query_strategy,json=queryStrategy,proto3,enum=xray.app.dns.QueryStrategy" json:"query_strategy,omitempty"`
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DisableFallback bool `protobuf:"varint,10,opt,name=disableFallback,proto3" json:"disableFallback,omitempty"`
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}
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func (x *Config) Reset() {
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@ -375,6 +384,13 @@ func (x *Config) GetQueryStrategy() QueryStrategy {
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return QueryStrategy_USE_IP
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}
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func (x *Config) GetDisableFallback() bool {
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if x != nil {
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return x.DisableFallback
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}
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return false
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}
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type NameServer_PriorityDomain struct {
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state protoimpl.MessageState
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sizeCache protoimpl.SizeCache
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@ -569,96 +585,101 @@ var file_app_dns_config_proto_rawDesc = []byte{
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||||
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||||
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|
||||
0x6f, 0x74, 0x6f, 0x33,
|
||||
}
|
||||
|
||||
var (
|
||||
|
|
|
@ -13,6 +13,7 @@ import "app/router/config.proto";
|
|||
message NameServer {
|
||||
xray.common.net.Endpoint address = 1;
|
||||
bytes client_ip = 5;
|
||||
bool skipFallback = 6;
|
||||
|
||||
message PriorityDomain {
|
||||
DomainMatchingType type = 1;
|
||||
|
@ -84,8 +85,10 @@ message Config {
|
|||
|
||||
reserved 7;
|
||||
|
||||
// DisableCache Disable DNS cache
|
||||
// DisableCache disables DNS cache
|
||||
CacheStrategy cache_strategy = 8;
|
||||
|
||||
QueryStrategy query_strategy = 9;
|
||||
|
||||
bool disableFallback = 10;
|
||||
}
|
||||
|
|
|
@ -22,14 +22,15 @@ import (
|
|||
// DNS is a DNS rely server.
|
||||
type DNS struct {
|
||||
sync.Mutex
|
||||
tag string
|
||||
cs CacheStrategy
|
||||
ipOption *dns.IPOption
|
||||
hosts *StaticHosts
|
||||
clients []*Client
|
||||
ctx context.Context
|
||||
domainMatcher strmatcher.IndexMatcher
|
||||
matcherInfos []DomainMatcherInfo
|
||||
tag string
|
||||
cs CacheStrategy
|
||||
disableFallback bool
|
||||
ipOption *dns.IPOption
|
||||
hosts *StaticHosts
|
||||
clients []*Client
|
||||
ctx context.Context
|
||||
domainMatcher strmatcher.IndexMatcher
|
||||
matcherInfos []DomainMatcherInfo
|
||||
}
|
||||
|
||||
// DomainMatcherInfo contains information attached to index returned by Server.domainMatcher
|
||||
|
@ -131,14 +132,15 @@ func New(ctx context.Context, config *Config) (*DNS, error) {
|
|||
}
|
||||
|
||||
return &DNS{
|
||||
tag: tag,
|
||||
hosts: hosts,
|
||||
ipOption: ipOption,
|
||||
clients: clients,
|
||||
ctx: ctx,
|
||||
domainMatcher: domainMatcher,
|
||||
matcherInfos: matcherInfos,
|
||||
cs: config.CacheStrategy,
|
||||
tag: tag,
|
||||
hosts: hosts,
|
||||
ipOption: ipOption,
|
||||
clients: clients,
|
||||
ctx: ctx,
|
||||
domainMatcher: domainMatcher,
|
||||
matcherInfos: matcherInfos,
|
||||
cs: config.CacheStrategy,
|
||||
disableFallback: config.DisableFallback,
|
||||
}, nil
|
||||
}
|
||||
|
||||
|
@ -254,6 +256,11 @@ func (s *DNS) sortClients(domain string, option dns.IPOption) []*Client {
|
|||
if len(clientNames) > 0 {
|
||||
newError("domain ", domain, " will use DNS in order: ", clientNames).AtDebug().WriteToLog()
|
||||
}
|
||||
if len(clients) == 0 {
|
||||
clients = append(clients, s.clients[0])
|
||||
clientNames = append(clientNames, s.clients[0].Name())
|
||||
newError("domain ", domain, " will use the first DNS: ", clientNames).AtDebug().WriteToLog()
|
||||
}
|
||||
}()
|
||||
|
||||
// Priority domain matching
|
||||
|
@ -265,7 +272,6 @@ func (s *DNS) sortClients(domain string, option dns.IPOption) []*Client {
|
|||
newError("skipping the client " + client.Name()).AtDebug().WriteToLog()
|
||||
continue
|
||||
}
|
||||
|
||||
domainRules = append(domainRules, fmt.Sprintf("%s(DNS idx:%d)", domainRule, info.clientIdx))
|
||||
if clientUsed[info.clientIdx] {
|
||||
continue
|
||||
|
@ -275,18 +281,22 @@ func (s *DNS) sortClients(domain string, option dns.IPOption) []*Client {
|
|||
clientNames = append(clientNames, client.Name())
|
||||
}
|
||||
|
||||
// Default round-robin query
|
||||
for idx, client := range s.clients {
|
||||
if clientUsed[idx] {
|
||||
continue
|
||||
if !s.disableFallback {
|
||||
// Default round-robin query
|
||||
for idx, client := range s.clients {
|
||||
if clientUsed[idx] || client.skipFallback {
|
||||
continue
|
||||
}
|
||||
|
||||
if !canQueryOnClient(option, client) {
|
||||
newError("skipping the client " + client.Name()).AtDebug().WriteToLog()
|
||||
continue
|
||||
}
|
||||
|
||||
clientUsed[idx] = true
|
||||
clients = append(clients, client)
|
||||
clientNames = append(clientNames, client.Name())
|
||||
}
|
||||
if !canQueryOnClient(option, client) {
|
||||
newError("skipping the client " + client.Name()).AtDebug().WriteToLog()
|
||||
continue
|
||||
}
|
||||
clientUsed[idx] = true
|
||||
clients = append(clients, client)
|
||||
clientNames = append(clientNames, client.Name())
|
||||
}
|
||||
|
||||
return clients
|
||||
|
|
|
@ -25,10 +25,11 @@ type Server interface {
|
|||
|
||||
// Client is the interface for DNS client.
|
||||
type Client struct {
|
||||
server Server
|
||||
clientIP net.IP
|
||||
domains []string
|
||||
expectIPs []*router.GeoIPMatcher
|
||||
server Server
|
||||
clientIP net.IP
|
||||
skipFallback bool
|
||||
domains []string
|
||||
expectIPs []*router.GeoIPMatcher
|
||||
}
|
||||
|
||||
var errExpectedIPNonMatch = errors.New("expectIPs not match")
|
||||
|
@ -65,6 +66,7 @@ func NewServer(dest net.Destination, dispatcher routing.Dispatcher) (Server, err
|
|||
// NewClient creates a DNS client managing a name server with client IP, domain rules and expected IPs.
|
||||
func NewClient(ctx context.Context, ns *NameServer, clientIP net.IP, container router.GeoIPMatcherContainer, matcherInfos *[]DomainMatcherInfo, updateDomainRule func(strmatcher.Matcher, int, []DomainMatcherInfo) error) (*Client, error) {
|
||||
client := &Client{}
|
||||
|
||||
err := core.RequireFeatures(ctx, func(dispatcher routing.Dispatcher) error {
|
||||
// Create a new server for each client for now
|
||||
server, err := NewServer(ns.Address.AsDestination(), dispatcher)
|
||||
|
|
|
@ -11,11 +11,12 @@ import (
|
|||
)
|
||||
|
||||
type NameServerConfig struct {
|
||||
Address *Address
|
||||
ClientIP *Address
|
||||
Port uint16
|
||||
Domains []string
|
||||
ExpectIPs StringList
|
||||
Address *Address
|
||||
ClientIP *Address
|
||||
Port uint16
|
||||
SkipFallback bool
|
||||
Domains []string
|
||||
ExpectIPs StringList
|
||||
}
|
||||
|
||||
func (c *NameServerConfig) UnmarshalJSON(data []byte) error {
|
||||
|
@ -26,16 +27,18 @@ func (c *NameServerConfig) UnmarshalJSON(data []byte) error {
|
|||
}
|
||||
|
||||
var advanced struct {
|
||||
Address *Address `json:"address"`
|
||||
ClientIP *Address `json:"clientIp"`
|
||||
Port uint16 `json:"port"`
|
||||
Domains []string `json:"domains"`
|
||||
ExpectIPs StringList `json:"expectIps"`
|
||||
Address *Address `json:"address"`
|
||||
ClientIP *Address `json:"clientIp"`
|
||||
Port uint16 `json:"port"`
|
||||
SkipFallback bool `json:"skipFallback"`
|
||||
Domains []string `json:"domains"`
|
||||
ExpectIPs StringList `json:"expectIps"`
|
||||
}
|
||||
if err := json.Unmarshal(data, &advanced); err == nil {
|
||||
c.Address = advanced.Address
|
||||
c.ClientIP = advanced.ClientIP
|
||||
c.Port = advanced.Port
|
||||
c.SkipFallback = advanced.SkipFallback
|
||||
c.Domains = advanced.Domains
|
||||
c.ExpectIPs = advanced.ExpectIPs
|
||||
return nil
|
||||
|
@ -104,6 +107,7 @@ func (c *NameServerConfig) Build() (*dns.NameServer, error) {
|
|||
Port: uint32(c.Port),
|
||||
},
|
||||
ClientIp: myClientIP,
|
||||
SkipFallback: c.SkipFallback,
|
||||
PrioritizedDomain: domains,
|
||||
Geoip: geoipList,
|
||||
OriginalRules: originalRules,
|
||||
|
@ -119,13 +123,14 @@ var typeMap = map[router.Domain_Type]dns.DomainMatchingType{
|
|||
|
||||
// DNSConfig is a JSON serializable object for dns.Config.
|
||||
type DNSConfig struct {
|
||||
Servers []*NameServerConfig `json:"servers"`
|
||||
Hosts map[string]*Address `json:"hosts"`
|
||||
ClientIP *Address `json:"clientIp"`
|
||||
Tag string `json:"tag"`
|
||||
QueryStrategy string `json:"queryStrategy"`
|
||||
CacheStrategy string `json:"cacheStrategy"`
|
||||
DisableCache bool `json:"disableCache"`
|
||||
Servers []*NameServerConfig `json:"servers"`
|
||||
Hosts map[string]*Address `json:"hosts"`
|
||||
ClientIP *Address `json:"clientIp"`
|
||||
Tag string `json:"tag"`
|
||||
QueryStrategy string `json:"queryStrategy"`
|
||||
CacheStrategy string `json:"cacheStrategy"`
|
||||
DisableCache bool `json:"disableCache"`
|
||||
DisableFallback bool `json:"disableFallback"`
|
||||
}
|
||||
|
||||
func getHostMapping(addr *Address) *dns.Config_HostMapping {
|
||||
|
@ -143,8 +148,9 @@ func getHostMapping(addr *Address) *dns.Config_HostMapping {
|
|||
// Build implements Buildable
|
||||
func (c *DNSConfig) Build() (*dns.Config, error) {
|
||||
config := &dns.Config{
|
||||
Tag: c.Tag,
|
||||
CacheStrategy: dns.CacheStrategy_Cache_ALL,
|
||||
Tag: c.Tag,
|
||||
CacheStrategy: dns.CacheStrategy_Cache_ALL,
|
||||
DisableFallback: c.DisableFallback,
|
||||
}
|
||||
|
||||
if c.DisableCache {
|
||||
|
|
|
@ -69,6 +69,7 @@ func TestDNSConfigParsing(t *testing.T) {
|
|||
"address": "8.8.8.8",
|
||||
"clientIp": "10.0.0.1",
|
||||
"port": 5353,
|
||||
"skipFallback": true,
|
||||
"domains": ["domain:example.com"]
|
||||
}],
|
||||
"hosts": {
|
||||
|
@ -80,7 +81,8 @@ func TestDNSConfigParsing(t *testing.T) {
|
|||
},
|
||||
"clientIp": "10.0.0.1",
|
||||
"queryStrategy": "UseIPv4",
|
||||
"disableCache": true
|
||||
"disableCache": true,
|
||||
"disableFallback": true
|
||||
}`,
|
||||
Parser: parserCreator(),
|
||||
Output: &dns.Config{
|
||||
|
@ -95,7 +97,8 @@ func TestDNSConfigParsing(t *testing.T) {
|
|||
Network: net.Network_UDP,
|
||||
Port: 5353,
|
||||
},
|
||||
ClientIp: []byte{10, 0, 0, 1},
|
||||
ClientIp: []byte{10, 0, 0, 1},
|
||||
SkipFallback: true,
|
||||
PrioritizedDomain: []*dns.NameServer_PriorityDomain{
|
||||
{
|
||||
Type: dns.DomainMatchingType_Subdomain,
|
||||
|
@ -137,9 +140,10 @@ func TestDNSConfigParsing(t *testing.T) {
|
|||
Ip: [][]byte{{8, 8, 4, 4}},
|
||||
},
|
||||
},
|
||||
ClientIp: []byte{10, 0, 0, 1},
|
||||
QueryStrategy: dns.QueryStrategy_USE_IP4,
|
||||
CacheStrategy: dns.CacheStrategy_Cache_DISABLE,
|
||||
ClientIp: []byte{10, 0, 0, 1},
|
||||
QueryStrategy: dns.QueryStrategy_USE_IP4,
|
||||
CacheStrategy: dns.CacheStrategy_Cache_DISABLE,
|
||||
DisableFallback: true,
|
||||
},
|
||||
},
|
||||
})
|
||||
|
|
Loading…
Reference in a new issue