♻️ Refactor parsers

parser/shadowsocksr.go

@@ -0,0 +1,86 @@
+package parser
+
+import (
+	"net/url"
+	"strconv"
+	"strings"
+	"sub2clash/constant"
+	"sub2clash/model"
+)
+
+func ParseShadowsocksR(proxy string) (model.Proxy, error) {
+	if !strings.HasPrefix(proxy, constant.ShadowsocksRPrefix) {
+		return model.Proxy{}, &ParseError{Type: ErrInvalidPrefix, Raw: proxy}
+	}
+
+	proxy = strings.TrimPrefix(proxy, constant.ShadowsocksRPrefix)
+	proxy, err := DecodeBase64(proxy)
+	if err != nil {
+		return model.Proxy{}, &ParseError{
+			Type: ErrInvalidBase64,
+			Raw:  proxy,
+		}
+	}
+	serverInfoAndParams := strings.SplitN(proxy, "/?", 2)
+	parts := strings.Split(serverInfoAndParams[0], ":")
+	server := parts[0]
+	protocol := parts[2]
+	method := parts[3]
+	obfs := parts[4]
+	password := parts[5]
+	port, err := ParsePort(parts[1])
+	if err != nil {
+		return model.Proxy{}, &ParseError{
+			Type:    ErrInvalidPort,
+			Message: err.Error(),
+			Raw:     proxy,
+		}
+	}
+
+	var obfsParam string
+	var protoParam string
+	var remarks string
+	if len(serverInfoAndParams) == 2 {
+		params, err := url.ParseQuery(serverInfoAndParams[1])
+		if err != nil {
+			return model.Proxy{}, &ParseError{
+				Type:    ErrCannotParseParams,
+				Raw:     proxy,
+				Message: err.Error(),
+			}
+		}
+		if params.Get("obfsparam") != "" {
+			obfsParam, err = DecodeBase64(params.Get("obfsparam"))
+		}
+		if params.Get("protoparam") != "" {
+			protoParam, err = DecodeBase64(params.Get("protoparam"))
+		}
+		if params.Get("remarks") != "" {
+			remarks, err = DecodeBase64(params.Get("remarks"))
+		} else {
+			remarks = server + ":" + strconv.Itoa(port)
+		}
+		if err != nil {
+			return model.Proxy{}, &ParseError{
+				Type:    ErrInvalidStruct,
+				Raw:     proxy,
+				Message: err.Error(),
+			}
+		}
+	}
+
+	result := model.Proxy{
+		Name:          remarks,
+		Type:          "ssr",
+		Server:        server,
+		Port:          port,
+		Protocol:      protocol,
+		Cipher:        method,
+		Obfs:          obfs,
+		Password:      password,
+		ObfsParam:     obfsParam,
+		ProtocolParam: protoParam,
+	}
+
+	return result, nil
+}