mirror of
https://github.com/nitezs/sub2clash.git
synced 2024-12-24 11:44:42 -05:00
291 lines
8.4 KiB
Go
291 lines
8.4 KiB
Go
package handler
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import (
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"crypto/sha256"
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"encoding/hex"
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"errors"
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"net/url"
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"regexp"
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"sort"
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"strconv"
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"strings"
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"sub2clash/common"
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"sub2clash/logger"
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"sub2clash/model"
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"sub2clash/parser"
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"sub2clash/validator"
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"go.uber.org/zap"
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"gopkg.in/yaml.v3"
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)
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func BuildSub(clashType model.ClashType, query validator.SubValidator, template string) (
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*model.Subscription, error,
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) {
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// 定义变量
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var temp = &model.Subscription{}
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var sub = &model.Subscription{}
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var err error
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var templateBytes []byte
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// 加载模板
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if query.Template != "" {
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template = query.Template
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}
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if strings.HasPrefix(template, "http") {
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templateBytes, err = common.LoadSubscription(template, query.Refresh)
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if err != nil {
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logger.Logger.Debug(
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"load template failed", zap.String("template", template), zap.Error(err),
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)
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return nil, errors.New("加载模板失败: " + err.Error())
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}
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} else {
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unescape, err := url.QueryUnescape(template)
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if err != nil {
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return nil, errors.New("加载模板失败: " + err.Error())
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}
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templateBytes, err = common.LoadTemplate(unescape)
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if err != nil {
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logger.Logger.Debug(
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"load template failed", zap.String("template", template), zap.Error(err),
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)
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return nil, errors.New("加载模板失败: " + err.Error())
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}
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}
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// 解析模板
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err = yaml.Unmarshal(templateBytes, &temp)
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if err != nil {
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logger.Logger.Debug("parse template failed", zap.Error(err))
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return nil, errors.New("解析模板失败: " + err.Error())
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}
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var proxyList []model.Proxy
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// 加载订阅
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for i := range query.Subs {
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data, err := common.LoadSubscription(query.Subs[i], query.Refresh)
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subName := ""
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if strings.Contains(query.Subs[i], "#") {
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subName = query.Subs[i][strings.LastIndex(query.Subs[i], "#")+1:]
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}
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if err != nil {
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logger.Logger.Debug(
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"load subscription failed", zap.String("url", query.Subs[i]), zap.Error(err),
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)
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return nil, errors.New("加载订阅失败: " + err.Error())
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}
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// 解析订阅
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err = yaml.Unmarshal(data, &sub)
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var newProxies []model.Proxy
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if err != nil {
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reg, _ := regexp.Compile("(ssr|ss|vmess|trojan|vless|hysteria|hy2|hysteria2)://")
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if reg.Match(data) {
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p := common.ParseProxy(strings.Split(string(data), "\n")...)
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newProxies = p
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} else {
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// 如果无法直接解析，尝试Base64解码
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base64, err := parser.DecodeBase64(string(data))
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if err != nil {
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logger.Logger.Debug(
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"parse subscription failed", zap.String("url", query.Subs[i]),
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zap.String("data", string(data)),
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zap.Error(err),
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)
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return nil, errors.New("加载订阅失败: " + err.Error())
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}
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p := common.ParseProxy(strings.Split(base64, "\n")...)
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newProxies = p
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}
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} else {
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newProxies = sub.Proxies
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}
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if subName != "" {
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for i := range newProxies {
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newProxies[i].SubName = subName
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}
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}
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proxyList = append(proxyList, newProxies...)
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}
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// 添加自定义节点
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if len(query.Proxies) != 0 {
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proxyList = append(proxyList, common.ParseProxy(query.Proxies...)...)
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}
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// 给节点添加订阅名称
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for i := range proxyList {
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if proxyList[i].SubName != "" {
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proxyList[i].Name = strings.TrimSpace(proxyList[i].SubName) + " " + strings.TrimSpace(proxyList[i].Name)
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}
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}
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// 去掉配置相同的节点
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proxies := make(map[string]*model.Proxy)
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newProxies := make([]model.Proxy, 0, len(proxyList))
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for i := range proxyList {
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key := proxyList[i].Server + strconv.Itoa(proxyList[i].Port) + proxyList[i].Type + proxyList[i].UUID + proxyList[i].Password
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if _, exist := proxies[key]; !exist {
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proxies[key] = &proxyList[i]
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newProxies = append(newProxies, proxyList[i])
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}
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}
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proxyList = newProxies
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// 删除节点
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if strings.TrimSpace(query.Remove) != "" {
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newProxyList := make([]model.Proxy, 0, len(proxyList))
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for i := range proxyList {
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removeReg, err := regexp.Compile(query.Remove)
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if err != nil {
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logger.Logger.Debug("remove regexp compile failed", zap.Error(err))
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return nil, errors.New("remove 参数非法: " + err.Error())
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}
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// 删除匹配到的节点
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if removeReg.MatchString(proxyList[i].Name) {
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continue // 如果匹配到要删除的元素，跳过该元素，不添加到新切片中
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}
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newProxyList = append(newProxyList, proxyList[i]) // 将要保留的元素添加到新切片中
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}
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proxyList = newProxyList
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}
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// 重命名
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if len(query.ReplaceKeys) != 0 {
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// 创建重命名正则表达式
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replaceRegs := make([]*regexp.Regexp, 0, len(query.ReplaceKeys))
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for _, v := range query.ReplaceKeys {
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replaceReg, err := regexp.Compile(v)
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if err != nil {
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logger.Logger.Debug("replace regexp compile failed", zap.Error(err))
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return nil, errors.New("replace 参数非法: " + err.Error())
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}
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replaceRegs = append(replaceRegs, replaceReg)
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}
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for i := range proxyList {
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// 重命名匹配到的节点
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for j, v := range replaceRegs {
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if v.MatchString(proxyList[i].Name) {
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proxyList[i].Name = v.ReplaceAllString(
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proxyList[i].Name, query.ReplaceTo[j],
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)
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}
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}
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}
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}
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// 重名检测
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names := make(map[string]int)
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for i := range proxyList {
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if _, exist := names[proxyList[i].Name]; exist {
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names[proxyList[i].Name] = names[proxyList[i].Name] + 1
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proxyList[i].Name = proxyList[i].Name + " " + strconv.Itoa(names[proxyList[i].Name])
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} else {
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names[proxyList[i].Name] = 0
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}
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}
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// trim
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for i := range proxyList {
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proxyList[i].Name = strings.TrimSpace(proxyList[i].Name)
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}
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// 将新增节点都添加到临时变量 t 中，防止策略组排序错乱
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var t = &model.Subscription{}
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common.AddProxy(t, query.AutoTest, query.Lazy, clashType, proxyList...)
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// 排序策略组
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switch query.Sort {
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case "sizeasc":
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sort.Sort(model.ProxyGroupsSortBySize(t.ProxyGroups))
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case "sizedesc":
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sort.Sort(sort.Reverse(model.ProxyGroupsSortBySize(t.ProxyGroups)))
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case "nameasc":
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sort.Sort(model.ProxyGroupsSortByName(t.ProxyGroups))
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case "namedesc":
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sort.Sort(sort.Reverse(model.ProxyGroupsSortByName(t.ProxyGroups)))
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default:
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sort.Sort(model.ProxyGroupsSortByName(t.ProxyGroups))
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}
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// 合并新节点和模板
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MergeSubAndTemplate(temp, t, query.IgnoreCountryGrooup)
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// 处理自定义规则
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for _, v := range query.Rules {
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if v.Prepend {
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common.PrependRules(temp, v.Rule)
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} else {
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common.AppendRules(temp, v.Rule)
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}
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}
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// 处理自定义 ruleProvider
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for _, v := range query.RuleProviders {
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hash := sha256.Sum224([]byte(v.Url))
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name := hex.EncodeToString(hash[:])
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provider := model.RuleProvider{
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Type: "http",
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Behavior: v.Behavior,
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Url: v.Url,
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Path: "./" + name + ".yaml",
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Interval: 3600,
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}
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if v.Prepend {
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common.PrependRuleProvider(
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temp, v.Name, v.Group, provider,
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)
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} else {
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common.AppenddRuleProvider(
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temp, v.Name, v.Group, provider,
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)
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}
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}
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return temp, nil
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}
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func MergeSubAndTemplate(temp *model.Subscription, sub *model.Subscription, igcg bool) {
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// 只合并节点、策略组
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// 统计所有国家策略组名称
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var countryGroupNames []string
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for _, proxyGroup := range sub.ProxyGroups {
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if proxyGroup.IsCountryGrop {
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countryGroupNames = append(
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countryGroupNames, proxyGroup.Name,
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)
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}
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}
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var proxyNames []string
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for _, proxy := range sub.Proxies {
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proxyNames = append(proxyNames, proxy.Name)
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}
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// 将订阅中的节点添加到模板中
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temp.Proxies = append(temp.Proxies, sub.Proxies...)
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// 将订阅中的策略组添加到模板中
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for i := range temp.ProxyGroups {
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if temp.ProxyGroups[i].IsCountryGrop {
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continue
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}
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newProxies := make([]string, 0)
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countryGroupMap := make(map[string]model.ProxyGroup)
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for _, v := range sub.ProxyGroups {
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if v.IsCountryGrop {
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countryGroupMap[v.Name] = v
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}
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}
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for j := range temp.ProxyGroups[i].Proxies {
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reg := regexp.MustCompile("<(.*?)>")
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if reg.Match([]byte(temp.ProxyGroups[i].Proxies[j])) {
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key := reg.FindStringSubmatch(temp.ProxyGroups[i].Proxies[j])[1]
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switch key {
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case "all":
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newProxies = append(newProxies, proxyNames...)
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case "countries":
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if !igcg {
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newProxies = append(newProxies, countryGroupNames...)
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}
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default:
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if !igcg {
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if len(key) == 2 {
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newProxies = append(
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newProxies, countryGroupMap[common.GetContryName(key)].Proxies...,
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)
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}
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}
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}
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} else {
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newProxies = append(newProxies, temp.ProxyGroups[i].Proxies[j])
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}
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}
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temp.ProxyGroups[i].Proxies = newProxies
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}
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if !igcg {
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temp.ProxyGroups = append(temp.ProxyGroups, sub.ProxyGroups...)
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}
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}
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