forked from huacnlee/flora-kit
/
config.go
230 lines (212 loc) · 6.31 KB
/
config.go
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package flora
import (
"fmt"
"github.com/go-ini/ini"
ss "github.com/shadowsocks/shadowsocks-go/shadowsocks"
"log"
"net"
"os"
"strconv"
"strings"
"math/rand"
)
const (
DEFAULT_SOCKS_PORT = 1080
)
type ProxyConfig struct {
SurgeConfig *ini.File
GeoDbPath string
LocalSocksPort int
LocalHost string
proxyServer map[string]ProxyServer
proxyGroup map[string]*proxyGroup
bypassDomains []interface{}
systemBypass []string
ruleSuffixDomains []*Rule
rulePrefixDomains []*Rule
ruleKeywordDomains []*Rule
ruleUserAgent []*Rule
ruleGeoIP []*Rule
ruleFinal *Rule
}
type proxyGroup struct {
mode string
proxyServers []ProxyServer
}
func LoadConfig(cfgFile string, geoFile string) (*ProxyConfig) {
proxyConfig := ProxyConfig{}
var iniOpts = ini.LoadOptions{
AllowBooleanKeys: true,
Loose: true,
Insensitive: true,
}
sep := string(os.PathSeparator)
pwd, _ := os.Getwd()
var geoFilename = geoFile
var err error
var defaultCfgName = strings.Join([]string{pwd, "flora.default.conf"}, sep)
var userConfigFilename = strings.Join([]string{pwd, "flora.user.conf"}, sep)
var speCfgName string
if _, err := os.Stat(cfgFile); nil != err && os.IsNotExist(err) {
speCfgName = strings.Join([]string{pwd, cfgFile}, sep)
}
if _, err := os.Stat(geoFilename); nil != err && os.IsNotExist(err) {
geoFilename = strings.Join([]string{pwd, "geoip.mmdb"}, sep)
}
proxyConfig.SurgeConfig, err = ini.LoadSources(iniOpts, speCfgName, defaultCfgName, userConfigFilename)
if err != nil {
panic(fmt.Sprintf("Config file %v not found, or have error: \n\t%v", cfgFile, err))
}
loadGeneral(&proxyConfig)
loadProxy(&proxyConfig)
loadProxyGroup(&proxyConfig)
loadGeoIP(geoFilename)
loadRules(&proxyConfig)
return &proxyConfig
}
// [General] section
func loadGeneral(config *ProxyConfig) {
section := config.SurgeConfig.Section("General")
bypassDomains := []string{}
if section.HasKey("skip-proxy") {
bypassDomains = append(bypassDomains, readArrayLine(section.Key("skip-proxy").String())...)
}
if section.HasKey("bypass-tun") {
bypassDomains = append(bypassDomains, readArrayLine(section.Key("bypass-tun").String())...)
}
config.LocalSocksPort = DEFAULT_SOCKS_PORT
if section.HasKey("socks-port") {
port, err := strconv.Atoi(section.Key("socks-port").String())
if nil == err {
config.LocalSocksPort = port
}
}
config.LocalHost = "127.0.0.1"
if section.Haskey("interface") {
ipStr := section.Key("interface").String()
addr := net.ParseIP(ipStr)
if nil != addr {
config.LocalHost = ipStr
}
}
config.systemBypass = bypassDomains
//load bypass
config.bypassDomains = make([]interface{}, len(bypassDomains))
for i, v := range bypassDomains {
ip := net.ParseIP(v)
if nil != ip {
config.bypassDomains[i] = ip
} else if _, n, err := net.ParseCIDR(v); err == nil {
config.bypassDomains[i] = n
} else {
config.bypassDomains[i] = v
}
}
}
// [Proxy] Section
func loadProxy(config *ProxyConfig) {
config.proxyServer = make(map[string]ProxyServer)
section := config.SurgeConfig.Section("Proxy")
for _, name := range section.KeyStrings() {
proxyName := strings.ToLower(name)
v, _ := section.GetKey(proxyName)
var proxyStrCfg = readArrayLine(v.String())
serverType := strings.ToLower(proxyStrCfg[0])
var proxy ProxyServer
if serverType == ServerTypeShadowSocks || serverType == ServerTypeCustom {
//[ip:port,password,method]
if len(proxyStrCfg) > 1 {
c, err := ss.NewCipher(proxyStrCfg[3], proxyStrCfg[4])
if nil != err {
log.Printf("Loading shadowsocks proxy server %s has error ", proxyName)
continue
}
proxy = NewShadowSocks(strings.Join(proxyStrCfg[1:3], ":"), c)
}
} else if serverType == ServerTypeDirect {
proxy = NewDirect()
} else if serverType == ServerTypeReject {
proxy = NewReject()
}
if nil != proxy {
log.Printf("Loading proxy server %s done. ", proxyName)
config.proxyServer[proxyName] = proxy
}
}
}
func (c *ProxyConfig) GetProxyServer(action string) (ProxyServer) {
const maxFailCnt = 30
var server ProxyServer
var ok bool
server, ok = c.proxyServer[action]
if !ok {
group, ok := c.proxyGroup[action]
if ok {
for _, s := range group.proxyServers {
eff := []ProxyServer{}
if s.FailCount() < maxFailCnt {
eff = append(eff, s)
}
l := len(eff)
if l > 0 {
return eff[rand.Intn(l)]
}
}
} else {
server = NewDirect()
}
}
return server
}
//[Proxy Group] Section
func loadProxyGroup(config *ProxyConfig) {
section := config.SurgeConfig.Section("Proxy Group")
config.proxyGroup = make(map[string]*proxyGroup)
for _, name := range section.KeyStrings() {
groupName := strings.ToLower(name)
v, _ := section.GetKey(groupName)
proxyArr := readArrayLine(v.String())
//🚀 Proxy = select, 🌞 Line
if len(proxyArr) > 1 {
groupItems := proxyGroup{mode: proxyArr[0]}
servers := make([]ProxyServer, len(proxyArr)-1)
for i, p := range proxyArr[1:] {
proxyName := strings.ToLower(p)
servers[i] = config.proxyServer[proxyName]
}
groupItems.proxyServers = servers
config.proxyGroup[groupName] = &groupItems
}
}
}
//[Rule] Section
func loadRules(config *ProxyConfig) {
for _, key := range config.SurgeConfig.Section("Rule").KeyStrings() {
if strings.HasPrefix(key, "//") {
continue
}
items := readArrayLine(key)
ruleName := strings.ToLower(items[0])
switch ruleName {
case "user-agent":
config.ruleUserAgent = append(config.ruleUserAgent, &Rule{Match: items[1], Action: strings.ToLower(items[2])})
case "domain-suffix":
config.ruleSuffixDomains = append(config.ruleSuffixDomains, &Rule{Match: items[1], Action: strings.ToLower(items[2])})
case "domain-prefix":
config.rulePrefixDomains = append(config.rulePrefixDomains, &Rule{Match: items[1], Action: strings.ToLower(items[2])})
case "domain-keyword":
config.ruleKeywordDomains = append(config.ruleKeywordDomains, &Rule{Match: items[1], Action: strings.ToLower(items[2])})
case "geoip":
config.ruleGeoIP = append(config.ruleGeoIP, &Rule{Match: items[1], Action: strings.ToLower(items[2])})
case "final":
config.ruleFinal = &Rule{Match: "final", Action: strings.ToUpper(items[1])}
}
}
}
func readArrayLine(source string) []string {
out := strings.Split(source, ",")
for i, str := range out {
out[i] = strings.TrimSpace(str)
}
return out
}