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This commit is contained in:
Ainar Garipov
2022-06-02 17:55:48 +03:00
parent dcb043df5f
commit 4f5131f423
31 changed files with 1073 additions and 900 deletions
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64
internal/home/dns.go
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@@ -77,13 +77,36 @@ func initDNSServer() (err error) {
filterConf.HTTPRegister = httpRegister
Context.dnsFilter = filtering.New(&filterConf, nil)
var privateNets netutil.SubnetSet
switch len(config.DNS.PrivateNets) {
case 0:
// Use an optimized locally-served matcher.
privateNets = netutil.SubnetSetFunc(netutil.IsLocallyServed)
case 1:
var n *net.IPNet
n, err = netutil.ParseSubnet(config.DNS.PrivateNets[0])
if err != nil {
return fmt.Errorf("preparing the set of private subnets: %w", err)
}
privateNets = n
default:
var nets []*net.IPNet
nets, err = netutil.ParseSubnets(config.DNS.PrivateNets...)
if err != nil {
return fmt.Errorf("preparing the set of private subnets: %w", err)
}
privateNets = netutil.SliceSubnetSet(nets)
}
p := dnsforward.DNSCreateParams{
DNSFilter: Context.dnsFilter,
Stats: Context.stats,
QueryLog: Context.queryLog,
SubnetDetector: Context.subnetDetector,
Anonymizer: anonymizer,
LocalDomain: config.DNS.LocalDomainName,
DNSFilter: Context.dnsFilter,
Stats: Context.stats,
QueryLog: Context.queryLog,
PrivateNets: privateNets,
Anonymizer: anonymizer,
LocalDomain: config.DHCP.LocalDomainName,
}
if Context.dhcpServer != nil {
p.DHCPServer = Context.dhcpServer
@@ -112,8 +135,13 @@ func initDNSServer() (err error) {
return fmt.Errorf("dnsServer.Prepare: %w", err)
}
Context.rdns = NewRDNS(Context.dnsServer, &Context.clients, config.DNS.UsePrivateRDNS)
Context.whois = initWHOIS(&Context.clients)
if config.Clients.Sources.RDNS {
Context.rdns = NewRDNS(Context.dnsServer, &Context.clients, config.DNS.UsePrivateRDNS)
}
if config.Clients.Sources.WHOIS {
Context.whois = initWHOIS(&Context.clients)
}
Context.filters.Init()
return nil
@@ -130,10 +158,11 @@ func onDNSRequest(pctx *proxy.DNSContext) {
return
}
if config.DNS.ResolveClients && !ip.IsLoopback() {
srcs := config.Clients.Sources
if srcs.RDNS && !ip.IsLoopback() {
Context.rdns.Begin(ip)
}
if !Context.subnetDetector.IsSpecialNetwork(ip) {
if srcs.WHOIS && !netutil.IsSpecialPurpose(ip) {
Context.whois.Begin(ip)
}
}
@@ -192,6 +221,10 @@ func generateServerConfig() (newConf dnsforward.ServerConfig, err error) {
newConf.TLSConfig = tlsConf.TLSConfig
newConf.TLSConfig.ServerName = tlsConf.ServerName
if tlsConf.PortHTTPS != 0 {
newConf.HTTPSListenAddrs = ipsToTCPAddrs(hosts, tlsConf.PortHTTPS)
}
if tlsConf.PortDNSOverTLS != 0 {
newConf.TLSListenAddrs = ipsToTCPAddrs(hosts, tlsConf.PortDNSOverTLS)
}
@@ -217,7 +250,7 @@ func generateServerConfig() (newConf dnsforward.ServerConfig, err error) {
newConf.FilterHandler = applyAdditionalFiltering
newConf.GetCustomUpstreamByClient = Context.clients.findUpstreams
newConf.ResolveClients = dnsConf.ResolveClients
newConf.ResolveClients = config.Clients.Sources.RDNS
newConf.UsePrivateRDNS = dnsConf.UsePrivateRDNS
newConf.LocalPTRResolvers = dnsConf.LocalPTRResolvers
newConf.UpstreamTimeout = dnsConf.UpstreamTimeout.Duration
@@ -365,10 +398,15 @@ func startDNSServer() error {
const topClientsNumber = 100 // the number of clients to get
for _, ip := range Context.stats.GetTopClientsIP(topClientsNumber) {
if config.DNS.ResolveClients && !ip.IsLoopback() {
if ip == nil {
continue
}
srcs := config.Clients.Sources
if srcs.RDNS && !ip.IsLoopback() {
Context.rdns.Begin(ip)
}
if !Context.subnetDetector.IsSpecialNetwork(ip) {
if srcs.WHOIS && !netutil.IsSpecialPurpose(ip) {
Context.whois.Begin(ip)
}
}