mirror of
https://github.com/XTLS/Xray-core.git
synced 2024-11-22 15:03:02 +00:00
Refine PrioritizedDomain, should fix https://github.com/XTLS/Xray-core/issues/638
This commit is contained in:
hmol233
parent
b85eef0131
commit
1ced7985d5
@ -12,7 +12,6 @@ import (
|
||||
"github.com/xtls/xray-core/common"
|
||||
"github.com/xtls/xray-core/common/errors"
|
||||
"github.com/xtls/xray-core/common/matcher/geoip"
|
||||
"github.com/xtls/xray-core/common/matcher/str"
|
||||
"github.com/xtls/xray-core/common/net"
|
||||
"github.com/xtls/xray-core/common/session"
|
||||
"github.com/xtls/xray-core/features"
|
||||
@ -29,8 +28,6 @@ type DNS struct {
|
||||
hosts *StaticHosts
|
||||
clients []*Client
|
||||
ctx context.Context
|
||||
domainMatcher str.IndexMatcher
|
||||
matcherInfos []DomainMatcherInfo
|
||||
}
|
||||
|
||||
// DomainMatcherInfo contains information attached to index returned by Server.domainMatcher
|
||||
@ -89,9 +86,6 @@ func New(ctx context.Context, config *Config) (*DNS, error) {
|
||||
domainRuleCount += len(ns.PrioritizedDomain)
|
||||
}
|
||||
|
||||
// MatcherInfos is ensured to cover the maximum index domainMatcher could return, where matcher's index starts from 1
|
||||
matcherInfos := make([]DomainMatcherInfo, domainRuleCount+1)
|
||||
domainMatcher := &str.MatcherGroup{}
|
||||
geoipContainer := geoip.GeoIPMatcherContainer{}
|
||||
|
||||
for _, endpoint := range config.NameServers {
|
||||
@ -104,22 +98,13 @@ func New(ctx context.Context, config *Config) (*DNS, error) {
|
||||
}
|
||||
|
||||
for _, ns := range config.NameServer {
|
||||
clientIdx := len(clients)
|
||||
updateDomain := func(domainRule str.Matcher, originalRuleIdx int, matcherInfos []DomainMatcherInfo) error {
|
||||
midx := domainMatcher.Add(domainRule)
|
||||
matcherInfos[midx] = DomainMatcherInfo{
|
||||
clientIdx: uint16(clientIdx),
|
||||
domainRuleIdx: uint16(originalRuleIdx),
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
myClientIP := clientIP
|
||||
switch len(ns.ClientIp) {
|
||||
case net.IPv4len, net.IPv6len:
|
||||
myClientIP = net.IP(ns.ClientIp)
|
||||
myClientIP = ns.ClientIp
|
||||
}
|
||||
client, err := NewClient(ctx, ns, myClientIP, geoipContainer, &matcherInfos, updateDomain)
|
||||
client, err := NewClient(ctx, ns, myClientIP, geoipContainer)
|
||||
if err != nil {
|
||||
return nil, newError("failed to create client").Base(err)
|
||||
}
|
||||
@ -137,8 +122,6 @@ func New(ctx context.Context, config *Config) (*DNS, error) {
|
||||
ipOption: ipOption,
|
||||
clients: clients,
|
||||
ctx: ctx,
|
||||
domainMatcher: domainMatcher,
|
||||
matcherInfos: matcherInfos,
|
||||
cacheStrategy: config.CacheStrategy,
|
||||
disableFallback: config.DisableFallback,
|
||||
}, nil
|
||||
@ -268,22 +251,23 @@ func (s *DNS) sortClients(domain string, option *dns.IPOption) []*Client {
|
||||
}()
|
||||
|
||||
// Priority domain matching
|
||||
for _, match := range s.domainMatcher.Match(domain) {
|
||||
info := s.matcherInfos[match]
|
||||
client := s.clients[info.clientIdx]
|
||||
domainRule := client.domains[info.domainRuleIdx]
|
||||
for clientIdx, client := range s.clients {
|
||||
if ids := client.domainMatcher.Match(domain); len(ids) > 0 {
|
||||
if !canQueryOnClient(option, 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] {
|
||||
for _, id := range ids {
|
||||
rule := client.findRule(id)
|
||||
domainRules = append(domainRules, fmt.Sprintf("%s(DNS idx:%d)", rule, clientIdx))
|
||||
}
|
||||
if clientUsed[clientIdx] {
|
||||
continue
|
||||
}
|
||||
clientUsed[info.clientIdx] = true
|
||||
clients = append(clients, client)
|
||||
clientNames = append(clientNames, client.Name())
|
||||
}
|
||||
}
|
||||
|
||||
if !s.disableFallback {
|
||||
// Default round-robin query
|
||||
|
||||
@ -28,8 +28,20 @@ type Client struct {
|
||||
server Server
|
||||
clientIP net.IP
|
||||
skipFallback bool
|
||||
domains []string
|
||||
expectIPs []*geoip.GeoIPMatcher
|
||||
domainMatcher str.MatcherGroup
|
||||
originRules []*NameServer_OriginalRule
|
||||
}
|
||||
|
||||
func (c Client) findRule(idx uint32) string {
|
||||
for _, r := range c.originRules {
|
||||
if idx <= r.Size {
|
||||
return r.Rule
|
||||
}
|
||||
idx -= r.Size
|
||||
}
|
||||
|
||||
return "unknown rule"
|
||||
}
|
||||
|
||||
var errExpectedIPNonMatch = errors.New("expectIPs not match")
|
||||
@ -64,7 +76,7 @@ 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 geoip.GeoIPMatcherContainer, matcherInfos *[]DomainMatcherInfo, updateDomainRule func(str.Matcher, int, []DomainMatcherInfo) error) (*Client, error) {
|
||||
func NewClient(ctx context.Context, ns *NameServer, clientIP net.IP, container geoip.GeoIPMatcherContainer) (*Client, error) {
|
||||
client := &Client{}
|
||||
|
||||
err := core.RequireFeatures(ctx, func(dispatcher routing.Dispatcher) error {
|
||||
@ -79,55 +91,38 @@ func NewClient(ctx context.Context, ns *NameServer, clientIP net.IP, container g
|
||||
ns.PrioritizedDomain = append(ns.PrioritizedDomain, localTLDsAndDotlessDomains...)
|
||||
ns.OriginalRules = append(ns.OriginalRules, localTLDsAndDotlessDomainsRule)
|
||||
// The following lines is a solution to avoid core panics（rule index out of range） when setting `localhost` DNS client in config.
|
||||
// Because the `localhost` DNS client will apend len(localTLDsAndDotlessDomains) rules into matcherInfos to match `geosite:private` default rule.
|
||||
// Because the `localhost` DNS client will append len(localTLDsAndDotlessDomains) rules into matcherInfos to match `geosite:private` default rule.
|
||||
// But `matcherInfos` has no enough length to add rules, which leads to core panics (rule index out of range).
|
||||
// To avoid this, the length of `matcherInfos` must be equal to the expected, so manually append it with Golang default zero value first for later modification.
|
||||
// ;)
|
||||
/*
|
||||
for i := 0; i < len(localTLDsAndDotlessDomains); i++ {
|
||||
*matcherInfos = append(*matcherInfos, DomainMatcherInfo{
|
||||
clientIdx: uint16(0),
|
||||
domainRuleIdx: uint16(0),
|
||||
})
|
||||
}
|
||||
*/
|
||||
}
|
||||
|
||||
// Establish domain rules
|
||||
var rules []string
|
||||
ruleCurr := 0
|
||||
ruleIter := 0
|
||||
var domainMatcher = str.MatcherGroup{}
|
||||
for _, domain := range ns.PrioritizedDomain {
|
||||
domainRule, err := toStrMatcher(domain.Type, domain.Value)
|
||||
if err != nil {
|
||||
return newError("failed to create prioritized domain").Base(err).AtWarning()
|
||||
}
|
||||
originalRuleIdx := ruleCurr
|
||||
if ruleCurr < len(ns.OriginalRules) {
|
||||
rule := ns.OriginalRules[ruleCurr]
|
||||
if ruleCurr >= len(rules) {
|
||||
rules = append(rules, rule.Rule)
|
||||
}
|
||||
ruleIter++
|
||||
if ruleIter >= int(rule.Size) {
|
||||
ruleIter = 0
|
||||
ruleCurr++
|
||||
}
|
||||
} else { // No original rule, generate one according to current domain matcher (majorly for compatibility with tests)
|
||||
rules = append(rules, domainRule.String())
|
||||
ruleCurr++
|
||||
}
|
||||
err = updateDomainRule(domainRule, originalRuleIdx, *matcherInfos)
|
||||
if err != nil {
|
||||
return newError("failed to create prioritized domain").Base(err).AtWarning()
|
||||
}
|
||||
domainMatcher.Add(domainRule)
|
||||
}
|
||||
|
||||
// Establish expected IPs
|
||||
var matchers []*geoip.GeoIPMatcher
|
||||
var ipMatchers []*geoip.GeoIPMatcher
|
||||
for _, geoip := range ns.Geoip {
|
||||
matcher, err := container.Add(geoip)
|
||||
if err != nil {
|
||||
return newError("failed to create ip matcher").Base(err).AtWarning()
|
||||
}
|
||||
matchers = append(matchers, matcher)
|
||||
ipMatchers = append(ipMatchers, matcher)
|
||||
}
|
||||
|
||||
if len(clientIP) > 0 {
|
||||
@ -141,8 +136,9 @@ func NewClient(ctx context.Context, ns *NameServer, clientIP net.IP, container g
|
||||
|
||||
client.server = server
|
||||
client.clientIP = clientIP
|
||||
client.domains = rules
|
||||
client.expectIPs = matchers
|
||||
client.expectIPs = ipMatchers
|
||||
client.originRules = ns.OriginalRules
|
||||
client.domainMatcher = domainMatcher
|
||||
return nil
|
||||
})
|
||||
return client, err
|
||||
|
||||
Loading…
Reference in New Issue
Block a user