clash/hub/executor/executor.go
2021-10-28 11:36:11 +08:00

319 lines
7.6 KiB
Go

package executor
import (
"fmt"
"net"
"os"
"runtime"
"strconv"
"strings"
"sync"
"github.com/Dreamacro/clash/adapter"
"github.com/Dreamacro/clash/adapter/outboundgroup"
"github.com/Dreamacro/clash/component/auth"
"github.com/Dreamacro/clash/component/dialer"
"github.com/Dreamacro/clash/component/iface"
"github.com/Dreamacro/clash/component/profile"
"github.com/Dreamacro/clash/component/profile/cachefile"
"github.com/Dreamacro/clash/component/resolver"
"github.com/Dreamacro/clash/component/trie"
"github.com/Dreamacro/clash/config"
C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/constant/provider"
"github.com/Dreamacro/clash/dns"
P "github.com/Dreamacro/clash/listener"
authStore "github.com/Dreamacro/clash/listener/auth"
"github.com/Dreamacro/clash/listener/tproxy"
"github.com/Dreamacro/clash/listener/tun/dev"
"github.com/Dreamacro/clash/log"
"github.com/Dreamacro/clash/tunnel"
)
var mux sync.Mutex
func readConfig(path string) ([]byte, error) {
if _, err := os.Stat(path); os.IsNotExist(err) {
return nil, err
}
data, err := os.ReadFile(path)
if err != nil {
return nil, err
}
if len(data) == 0 {
return nil, fmt.Errorf("configuration file %s is empty", path)
}
return data, err
}
// Parse config with default config path
func Parse() (*config.Config, error) {
return ParseWithPath(C.Path.Config())
}
// ParseWithPath parse config with custom config path
func ParseWithPath(path string) (*config.Config, error) {
buf, err := readConfig(path)
if err != nil {
return nil, err
}
return ParseWithBytes(buf)
}
// ParseWithBytes config with buffer
func ParseWithBytes(buf []byte) (*config.Config, error) {
return config.Parse(buf)
}
// ApplyConfig dispatch configure to all parts
func ApplyConfig(cfg *config.Config, force bool) {
mux.Lock()
defer mux.Unlock()
updateUsers(cfg.Users)
updateProxies(cfg.Proxies, cfg.Providers)
updateRules(cfg.Rules)
updateHosts(cfg.Hosts)
updateProfile(cfg)
updateIPTables(cfg.DNS, cfg.General)
updateDNS(cfg.DNS, cfg.General)
updateGeneral(cfg.General, force)
updateExperimental(cfg)
}
func GetGeneral() *config.General {
ports := P.GetPorts()
authenticator := []string{}
if auth := authStore.Authenticator(); auth != nil {
authenticator = auth.Users()
}
general := &config.General{
Inbound: config.Inbound{
Port: ports.Port,
SocksPort: ports.SocksPort,
RedirPort: ports.RedirPort,
TProxyPort: ports.TProxyPort,
MixedPort: ports.MixedPort,
Tun: P.Tun(),
Authentication: authenticator,
AllowLan: P.AllowLan(),
BindAddress: P.BindAddress(),
},
Mode: tunnel.Mode(),
LogLevel: log.Level(),
IPv6: !resolver.DisableIPv6,
}
return general
}
func updateExperimental(c *config.Config) {}
func updateDNS(c *config.DNS, general *config.General) {
if !c.Enable {
resolver.DefaultResolver = nil
resolver.DefaultHostMapper = nil
dns.ReCreateServer("", nil, nil)
return
}
cfg := dns.Config{
Main: c.NameServer,
Fallback: c.Fallback,
IPv6: c.IPv6,
EnhancedMode: c.EnhancedMode,
Pool: c.FakeIPRange,
Hosts: c.Hosts,
FallbackFilter: dns.FallbackFilter{
GeoIP: c.FallbackFilter.GeoIP,
GeoIPCode: c.FallbackFilter.GeoIPCode,
IPCIDR: c.FallbackFilter.IPCIDR,
Domain: c.FallbackFilter.Domain,
},
Default: c.DefaultNameserver,
Policy: c.NameServerPolicy,
}
r := dns.NewResolver(cfg)
m := dns.NewEnhancer(cfg)
// reuse cache of old host mapper
if old := resolver.DefaultHostMapper; old != nil {
m.PatchFrom(old.(*dns.ResolverEnhancer))
}
resolver.DefaultResolver = r
resolver.DefaultHostMapper = m
if general.Tun.Enable && strings.EqualFold(general.Tun.Stack, "system") {
resolver.DefaultLocalServer = dns.NewLocalServer(r, m)
}
if err := dns.ReCreateServer(c.Listen, r, m); err != nil {
log.Errorln("Start DNS server error: %s", err.Error())
return
}
if c.Listen != "" {
log.Infoln("DNS server listening at: %s", c.Listen)
}
}
func updateHosts(tree *trie.DomainTrie) {
resolver.DefaultHosts = tree
}
func updateProxies(proxies map[string]C.Proxy, providers map[string]provider.ProxyProvider) {
tunnel.UpdateProxies(proxies, providers)
}
func updateRules(rules []C.Rule) {
tunnel.UpdateRules(rules)
}
func updateGeneral(general *config.General, force bool) {
tunnel.SetMode(general.Mode)
resolver.DisableIPv6 = !general.IPv6
if (general.Tun.Enable || general.TProxyPort != 0) && general.Interface == "" {
autoDetectInterfaceName, err := dev.GetAutoDetectInterface()
if err == nil {
if autoDetectInterfaceName != "" && autoDetectInterfaceName != "<nil>" {
general.Interface = autoDetectInterfaceName
log.Infoln("Use auto detect interface: %s", general.Interface)
} else {
log.Debugln("Auto detect interface is empty.")
}
} else {
log.Debugln("Can not find auto detect interface. %s", err.Error())
}
}
if general.Interface != "" {
dialer.DefaultOptions = []dialer.Option{dialer.WithInterface(general.Interface)}
} else {
dialer.DefaultOptions = nil
}
iface.FlushCache()
if !force {
log.SetLevel(general.LogLevel)
return
}
allowLan := general.AllowLan
P.SetAllowLan(allowLan)
bindAddress := general.BindAddress
P.SetBindAddress(bindAddress)
tcpIn := tunnel.TCPIn()
udpIn := tunnel.UDPIn()
if err := P.ReCreateHTTP(general.Port, tcpIn); err != nil {
log.Errorln("Start HTTP server error: %s", err.Error())
}
if err := P.ReCreateSocks(general.SocksPort, tcpIn, udpIn); err != nil {
log.Errorln("Start SOCKS server error: %s", err.Error())
}
if err := P.ReCreateRedir(general.RedirPort, tcpIn, udpIn); err != nil {
log.Errorln("Start Redir server error: %s", err.Error())
}
if err := P.ReCreateTProxy(general.TProxyPort, tcpIn, udpIn); err != nil {
log.Errorln("Start TProxy server error: %s", err.Error())
}
if err := P.ReCreateMixed(general.MixedPort, tcpIn, udpIn); err != nil {
log.Errorln("Start Mixed(http and socks) server error: %s", err.Error())
}
if err := P.ReCreateTun(general.Tun, tcpIn, udpIn); err != nil {
log.Errorln("Start Tun interface error: %s", err.Error())
os.Exit(2)
}
log.SetLevel(general.LogLevel)
}
func updateUsers(users []auth.AuthUser) {
authenticator := auth.NewAuthenticator(users)
authStore.SetAuthenticator(authenticator)
if authenticator != nil {
log.Infoln("Authentication of local server updated")
}
}
func updateProfile(cfg *config.Config) {
profileCfg := cfg.Profile
profile.StoreSelected.Store(profileCfg.StoreSelected)
if profileCfg.StoreSelected {
patchSelectGroup(cfg.Proxies)
}
}
func patchSelectGroup(proxies map[string]C.Proxy) {
mapping := cachefile.Cache().SelectedMap()
if mapping == nil {
return
}
for name, proxy := range proxies {
outbound, ok := proxy.(*adapter.Proxy)
if !ok {
continue
}
selector, ok := outbound.ProxyAdapter.(*outboundgroup.Selector)
if !ok {
continue
}
selected, exist := mapping[name]
if !exist {
continue
}
selector.Set(selected)
}
}
func updateIPTables(dns *config.DNS, general *config.General) {
if runtime.GOOS != "linux" || dns.Listen == "" || general.TProxyPort == 0 || general.Tun.Enable {
return
}
_, dnsPortStr, err := net.SplitHostPort(dns.Listen)
if dnsPortStr == "0" || dnsPortStr == "" || err != nil {
return
}
dnsPort, err := strconv.Atoi(dnsPortStr)
if err != nil {
return
}
tproxy.CleanUpTProxyLinuxIPTables()
err = tproxy.SetTProxyLinuxIPTables(general.Interface, general.TProxyPort, dnsPort)
if err != nil {
log.Errorln("Can not setting iptables for TProxy on linux, %s", err.Error())
os.Exit(2)
}
}
func CleanUp() {
P.CleanUp()
if runtime.GOOS == "linux" {
tproxy.CleanUpTProxyLinuxIPTables()
}
}