mirror of https://github.com/Dreamacro/clash.git
593 lines
16 KiB
Go
593 lines
16 KiB
Go
package config
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import (
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"errors"
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"fmt"
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"net"
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"net/url"
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"os"
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"strings"
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"github.com/Dreamacro/clash/adapters/outbound"
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"github.com/Dreamacro/clash/adapters/outboundgroup"
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"github.com/Dreamacro/clash/adapters/provider"
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"github.com/Dreamacro/clash/component/auth"
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"github.com/Dreamacro/clash/component/fakeip"
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"github.com/Dreamacro/clash/component/trie"
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C "github.com/Dreamacro/clash/constant"
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"github.com/Dreamacro/clash/dns"
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"github.com/Dreamacro/clash/log"
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R "github.com/Dreamacro/clash/rules"
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T "github.com/Dreamacro/clash/tunnel"
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yaml "gopkg.in/yaml.v2"
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)
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// General config
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type General struct {
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Inbound
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Controller
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Mode T.TunnelMode `json:"mode"`
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LogLevel log.LogLevel `json:"log-level"`
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IPv6 bool `json:"ipv6"`
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Interface string `json:"interface-name"`
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}
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// Inbound
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type Inbound struct {
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Port int `json:"port"`
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SocksPort int `json:"socks-port"`
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RedirPort int `json:"redir-port"`
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TProxyPort int `json:"tproxy-port"`
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MixedPort int `json:"mixed-port"`
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Authentication []string `json:"authentication"`
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AllowLan bool `json:"allow-lan"`
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BindAddress string `json:"bind-address"`
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}
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// Controller
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type Controller struct {
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ExternalController string `json:"-"`
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ExternalUI string `json:"-"`
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Secret string `json:"-"`
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}
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// DNS config
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type DNS struct {
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Enable bool `yaml:"enable"`
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IPv6 bool `yaml:"ipv6"`
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NameServer []dns.NameServer `yaml:"nameserver"`
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Fallback []dns.NameServer `yaml:"fallback"`
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FallbackFilter FallbackFilter `yaml:"fallback-filter"`
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Listen string `yaml:"listen"`
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EnhancedMode dns.EnhancedMode `yaml:"enhanced-mode"`
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DefaultNameserver []dns.NameServer `yaml:"default-nameserver"`
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FakeIPRange *fakeip.Pool
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Hosts *trie.DomainTrie
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}
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// FallbackFilter config
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type FallbackFilter struct {
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GeoIP bool `yaml:"geoip"`
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IPCIDR []*net.IPNet `yaml:"ipcidr"`
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Domain []string `yaml:"domain"`
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}
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// Experimental config
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type Experimental struct{}
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// Config is clash config manager
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type Config struct {
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General *General
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DNS *DNS
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Experimental *Experimental
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Hosts *trie.DomainTrie
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Rules []C.Rule
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Users []auth.AuthUser
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Proxies map[string]C.Proxy
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Providers map[string]provider.ProxyProvider
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}
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type RawDNS struct {
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Enable bool `yaml:"enable"`
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IPv6 bool `yaml:"ipv6"`
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UseHosts bool `yaml:"use-hosts"`
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NameServer []string `yaml:"nameserver"`
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Fallback []string `yaml:"fallback"`
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FallbackFilter RawFallbackFilter `yaml:"fallback-filter"`
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Listen string `yaml:"listen"`
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EnhancedMode dns.EnhancedMode `yaml:"enhanced-mode"`
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FakeIPRange string `yaml:"fake-ip-range"`
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FakeIPFilter []string `yaml:"fake-ip-filter"`
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DefaultNameserver []string `yaml:"default-nameserver"`
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}
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type RawFallbackFilter struct {
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GeoIP bool `yaml:"geoip"`
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IPCIDR []string `yaml:"ipcidr"`
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Domain []string `yaml:"domain"`
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}
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type RawConfig struct {
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Port int `yaml:"port"`
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SocksPort int `yaml:"socks-port"`
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RedirPort int `yaml:"redir-port"`
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TProxyPort int `yaml:"tproxy-port"`
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MixedPort int `yaml:"mixed-port"`
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Authentication []string `yaml:"authentication"`
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AllowLan bool `yaml:"allow-lan"`
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BindAddress string `yaml:"bind-address"`
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Mode T.TunnelMode `yaml:"mode"`
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LogLevel log.LogLevel `yaml:"log-level"`
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IPv6 bool `yaml:"ipv6"`
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ExternalController string `yaml:"external-controller"`
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ExternalUI string `yaml:"external-ui"`
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Secret string `yaml:"secret"`
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Interface string `yaml:"interface-name"`
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ProxyProvider map[string]map[string]interface{} `yaml:"proxy-providers"`
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Hosts map[string]string `yaml:"hosts"`
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DNS RawDNS `yaml:"dns"`
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Experimental Experimental `yaml:"experimental"`
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Proxy []map[string]interface{} `yaml:"proxies"`
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ProxyGroup []map[string]interface{} `yaml:"proxy-groups"`
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Rule []string `yaml:"rules"`
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}
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// Parse config
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func Parse(buf []byte) (*Config, error) {
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rawCfg, err := UnmarshalRawConfig(buf)
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if err != nil {
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return nil, err
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}
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return ParseRawConfig(rawCfg)
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}
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func UnmarshalRawConfig(buf []byte) (*RawConfig, error) {
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// config with some default value
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rawCfg := &RawConfig{
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AllowLan: false,
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BindAddress: "*",
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Mode: T.Rule,
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Authentication: []string{},
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LogLevel: log.INFO,
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Hosts: map[string]string{},
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Rule: []string{},
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Proxy: []map[string]interface{}{},
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ProxyGroup: []map[string]interface{}{},
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DNS: RawDNS{
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Enable: false,
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UseHosts: true,
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FakeIPRange: "198.18.0.1/16",
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FallbackFilter: RawFallbackFilter{
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GeoIP: true,
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IPCIDR: []string{},
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},
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DefaultNameserver: []string{
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"114.114.114.114",
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"8.8.8.8",
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},
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},
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}
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if err := yaml.Unmarshal(buf, &rawCfg); err != nil {
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return nil, err
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}
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return rawCfg, nil
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}
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func ParseRawConfig(rawCfg *RawConfig) (*Config, error) {
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config := &Config{}
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config.Experimental = &rawCfg.Experimental
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general, err := parseGeneral(rawCfg)
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if err != nil {
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return nil, err
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}
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config.General = general
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proxies, providers, err := parseProxies(rawCfg)
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if err != nil {
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return nil, err
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}
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config.Proxies = proxies
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config.Providers = providers
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rules, err := parseRules(rawCfg, proxies)
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if err != nil {
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return nil, err
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}
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config.Rules = rules
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hosts, err := parseHosts(rawCfg)
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if err != nil {
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return nil, err
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}
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config.Hosts = hosts
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dnsCfg, err := parseDNS(rawCfg.DNS, hosts)
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if err != nil {
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return nil, err
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}
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config.DNS = dnsCfg
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config.Users = parseAuthentication(rawCfg.Authentication)
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return config, nil
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}
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func parseGeneral(cfg *RawConfig) (*General, error) {
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externalUI := cfg.ExternalUI
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// checkout externalUI exist
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if externalUI != "" {
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externalUI = C.Path.Resolve(externalUI)
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if _, err := os.Stat(externalUI); os.IsNotExist(err) {
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return nil, fmt.Errorf("external-ui: %s not exist", externalUI)
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}
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}
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return &General{
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Inbound: Inbound{
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Port: cfg.Port,
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SocksPort: cfg.SocksPort,
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RedirPort: cfg.RedirPort,
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TProxyPort: cfg.TProxyPort,
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MixedPort: cfg.MixedPort,
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AllowLan: cfg.AllowLan,
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BindAddress: cfg.BindAddress,
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},
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Controller: Controller{
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ExternalController: cfg.ExternalController,
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ExternalUI: cfg.ExternalUI,
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Secret: cfg.Secret,
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},
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Mode: cfg.Mode,
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LogLevel: cfg.LogLevel,
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IPv6: cfg.IPv6,
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Interface: cfg.Interface,
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}, nil
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}
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func parseProxies(cfg *RawConfig) (proxies map[string]C.Proxy, providersMap map[string]provider.ProxyProvider, err error) {
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proxies = make(map[string]C.Proxy)
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providersMap = make(map[string]provider.ProxyProvider)
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proxyList := []string{}
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proxiesConfig := cfg.Proxy
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groupsConfig := cfg.ProxyGroup
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providersConfig := cfg.ProxyProvider
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proxies["DIRECT"] = outbound.NewProxy(outbound.NewDirect())
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proxies["REJECT"] = outbound.NewProxy(outbound.NewReject())
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proxyList = append(proxyList, "DIRECT", "REJECT")
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// parse proxy
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for idx, mapping := range proxiesConfig {
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proxy, err := outbound.ParseProxy(mapping)
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if err != nil {
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return nil, nil, fmt.Errorf("proxy %d: %w", idx, err)
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}
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if _, exist := proxies[proxy.Name()]; exist {
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return nil, nil, fmt.Errorf("proxy %s is the duplicate name", proxy.Name())
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}
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proxies[proxy.Name()] = proxy
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proxyList = append(proxyList, proxy.Name())
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}
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// keep the original order of ProxyGroups in config file
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for idx, mapping := range groupsConfig {
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groupName, existName := mapping["name"].(string)
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if !existName {
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return nil, nil, fmt.Errorf("proxy group %d: missing name", idx)
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}
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proxyList = append(proxyList, groupName)
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}
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// check if any loop exists and sort the ProxyGroups
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if err := proxyGroupsDagSort(groupsConfig); err != nil {
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return nil, nil, err
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}
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// parse and initial providers
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for name, mapping := range providersConfig {
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if name == provider.ReservedName {
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return nil, nil, fmt.Errorf("can not defined a provider called `%s`", provider.ReservedName)
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}
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pd, err := provider.ParseProxyProvider(name, mapping)
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if err != nil {
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return nil, nil, fmt.Errorf("parse proxy provider %s error: %w", name, err)
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}
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providersMap[name] = pd
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}
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for _, provider := range providersMap {
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log.Infoln("Start initial provider %s", provider.Name())
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if err := provider.Initial(); err != nil {
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return nil, nil, fmt.Errorf("initial proxy provider %s error: %w", provider.Name(), err)
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}
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}
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// parse proxy group
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for idx, mapping := range groupsConfig {
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group, err := outboundgroup.ParseProxyGroup(mapping, proxies, providersMap)
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if err != nil {
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return nil, nil, fmt.Errorf("proxy group[%d]: %w", idx, err)
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}
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groupName := group.Name()
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if _, exist := proxies[groupName]; exist {
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return nil, nil, fmt.Errorf("proxy group %s: the duplicate name", groupName)
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}
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proxies[groupName] = outbound.NewProxy(group)
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}
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// initial compatible provider
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for _, pd := range providersMap {
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if pd.VehicleType() != provider.Compatible {
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continue
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}
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log.Infoln("Start initial compatible provider %s", pd.Name())
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if err := pd.Initial(); err != nil {
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return nil, nil, err
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}
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}
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ps := []C.Proxy{}
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for _, v := range proxyList {
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ps = append(ps, proxies[v])
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}
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hc := provider.NewHealthCheck(ps, "", 0, true)
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pd, _ := provider.NewCompatibleProvider(provider.ReservedName, ps, hc)
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providersMap[provider.ReservedName] = pd
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global := outboundgroup.NewSelector(
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&outboundgroup.GroupCommonOption{
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Name: "GLOBAL",
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},
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[]provider.ProxyProvider{pd},
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)
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proxies["GLOBAL"] = outbound.NewProxy(global)
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return proxies, providersMap, nil
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}
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func parseRules(cfg *RawConfig, proxies map[string]C.Proxy) ([]C.Rule, error) {
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rules := []C.Rule{}
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rulesConfig := cfg.Rule
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// parse rules
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for idx, line := range rulesConfig {
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rule := trimArr(strings.Split(line, ","))
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var (
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payload string
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target string
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params = []string{}
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)
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switch l := len(rule); {
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case l == 2:
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target = rule[1]
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case l == 3:
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payload = rule[1]
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target = rule[2]
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case l >= 4:
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payload = rule[1]
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target = rule[2]
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params = rule[3:]
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default:
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return nil, fmt.Errorf("rules[%d] [%s] error: format invalid", idx, line)
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}
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if _, ok := proxies[target]; !ok {
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return nil, fmt.Errorf("rules[%d] [%s] error: proxy [%s] not found", idx, line, target)
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}
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rule = trimArr(rule)
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params = trimArr(params)
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parsed, parseErr := R.ParseRule(rule[0], payload, target, params)
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if parseErr != nil {
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if parseErr == R.ErrPlatformNotSupport {
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log.Warnln("Rules[%d] [%s] don't support current OS, skip", idx, line)
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continue
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}
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return nil, fmt.Errorf("rules[%d] [%s] error: %s", idx, line, parseErr.Error())
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}
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rules = append(rules, parsed)
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}
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return rules, nil
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}
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func parseHosts(cfg *RawConfig) (*trie.DomainTrie, error) {
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tree := trie.New()
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// add default hosts
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if err := tree.Insert("localhost", net.IP{127, 0, 0, 1}); err != nil {
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log.Errorln("insert localhost to host error: %s", err.Error())
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}
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if len(cfg.Hosts) != 0 {
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for domain, ipStr := range cfg.Hosts {
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ip := net.ParseIP(ipStr)
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if ip == nil {
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return nil, fmt.Errorf("%s is not a valid IP", ipStr)
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}
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tree.Insert(domain, ip)
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}
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}
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return tree, nil
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}
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func hostWithDefaultPort(host string, defPort string) (string, error) {
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if !strings.Contains(host, ":") {
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host += ":"
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}
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hostname, port, err := net.SplitHostPort(host)
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if err != nil {
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return "", err
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}
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if port == "" {
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port = defPort
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}
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return net.JoinHostPort(hostname, port), nil
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}
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func parseNameServer(servers []string) ([]dns.NameServer, error) {
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nameservers := []dns.NameServer{}
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for idx, server := range servers {
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// parse without scheme .e.g 8.8.8.8:53
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if !strings.Contains(server, "://") {
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server = "udp://" + server
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}
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u, err := url.Parse(server)
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if err != nil {
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return nil, fmt.Errorf("DNS NameServer[%d] format error: %s", idx, err.Error())
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}
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var addr, dnsNetType string
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switch u.Scheme {
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case "udp":
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addr, err = hostWithDefaultPort(u.Host, "53")
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dnsNetType = "" // UDP
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case "tcp":
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addr, err = hostWithDefaultPort(u.Host, "53")
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dnsNetType = "tcp" // TCP
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case "tls":
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addr, err = hostWithDefaultPort(u.Host, "853")
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dnsNetType = "tcp-tls" // DNS over TLS
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case "https":
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clearURL := url.URL{Scheme: "https", Host: u.Host, Path: u.Path}
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addr = clearURL.String()
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dnsNetType = "https" // DNS over HTTPS
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default:
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return nil, fmt.Errorf("DNS NameServer[%d] unsupport scheme: %s", idx, u.Scheme)
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}
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if err != nil {
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return nil, fmt.Errorf("DNS NameServer[%d] format error: %s", idx, err.Error())
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}
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nameservers = append(
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nameservers,
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dns.NameServer{
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Net: dnsNetType,
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Addr: addr,
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},
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)
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}
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return nameservers, nil
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}
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func parseFallbackIPCIDR(ips []string) ([]*net.IPNet, error) {
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ipNets := []*net.IPNet{}
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for idx, ip := range ips {
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_, ipnet, err := net.ParseCIDR(ip)
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if err != nil {
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return nil, fmt.Errorf("DNS FallbackIP[%d] format error: %s", idx, err.Error())
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}
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ipNets = append(ipNets, ipnet)
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}
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return ipNets, nil
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}
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func parseDNS(cfg RawDNS, hosts *trie.DomainTrie) (*DNS, error) {
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if cfg.Enable && len(cfg.NameServer) == 0 {
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return nil, fmt.Errorf("if DNS configuration is turned on, NameServer cannot be empty")
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}
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dnsCfg := &DNS{
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Enable: cfg.Enable,
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Listen: cfg.Listen,
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IPv6: cfg.IPv6,
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EnhancedMode: cfg.EnhancedMode,
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FallbackFilter: FallbackFilter{
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IPCIDR: []*net.IPNet{},
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},
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}
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var err error
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if dnsCfg.NameServer, err = parseNameServer(cfg.NameServer); err != nil {
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return nil, err
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}
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if dnsCfg.Fallback, err = parseNameServer(cfg.Fallback); err != nil {
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return nil, err
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}
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if len(cfg.DefaultNameserver) == 0 {
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return nil, errors.New("default nameserver should have at least one nameserver")
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}
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if dnsCfg.DefaultNameserver, err = parseNameServer(cfg.DefaultNameserver); err != nil {
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return nil, err
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}
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// check default nameserver is pure ip addr
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for _, ns := range dnsCfg.DefaultNameserver {
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host, _, err := net.SplitHostPort(ns.Addr)
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if err != nil || net.ParseIP(host) == nil {
|
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return nil, errors.New("default nameserver should be pure IP")
|
|
}
|
|
}
|
|
|
|
if cfg.EnhancedMode == dns.FAKEIP {
|
|
_, ipnet, err := net.ParseCIDR(cfg.FakeIPRange)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var host *trie.DomainTrie
|
|
// fake ip skip host filter
|
|
if len(cfg.FakeIPFilter) != 0 {
|
|
host = trie.New()
|
|
for _, domain := range cfg.FakeIPFilter {
|
|
host.Insert(domain, true)
|
|
}
|
|
}
|
|
|
|
pool, err := fakeip.New(ipnet, 1000, host)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
dnsCfg.FakeIPRange = pool
|
|
}
|
|
|
|
dnsCfg.FallbackFilter.GeoIP = cfg.FallbackFilter.GeoIP
|
|
if fallbackip, err := parseFallbackIPCIDR(cfg.FallbackFilter.IPCIDR); err == nil {
|
|
dnsCfg.FallbackFilter.IPCIDR = fallbackip
|
|
}
|
|
dnsCfg.FallbackFilter.Domain = cfg.FallbackFilter.Domain
|
|
|
|
if cfg.UseHosts {
|
|
dnsCfg.Hosts = hosts
|
|
}
|
|
|
|
return dnsCfg, nil
|
|
}
|
|
|
|
func parseAuthentication(rawRecords []string) []auth.AuthUser {
|
|
users := make([]auth.AuthUser, 0)
|
|
for _, line := range rawRecords {
|
|
userData := strings.SplitN(line, ":", 2)
|
|
if len(userData) == 2 {
|
|
users = append(users, auth.AuthUser{User: userData[0], Pass: userData[1]})
|
|
}
|
|
}
|
|
return users
|
|
}
|