first commit

internal/parser/http.go

@@ -0,0 +1,174 @@
+package parser
+
+import (
+	"fmt"
+	"net/url"
+	"strconv"
+	"strings"
+
+	"github.com/subconverter-go/internal/logging"
+)
+
+// HTTPParser HTTP协议解析器
+// 实现HTTP代理配置的解析功能
+type HTTPParser struct {
+	logger *logging.Logger
+}
+
+// NewHTTPParser 创建新的HTTP解析器
+// 返回初始化好的HTTPParser实例
+func NewHTTPParser(logger *logging.Logger) *HTTPParser {
+	return &HTTPParser{
+		logger: logger,
+	}
+}
+
+// Parse 解析HTTP配置
+// 支持http://和https://格式
+func (p *HTTPParser) Parse(input string) (*ProxyConfig, error) {
+	p.logger.Debugf("Parsing HTTP configuration")
+
+	// 检查是否已经是URL格式
+	var parsedURL *url.URL
+	var err error
+
+	if strings.HasPrefix(input, "http://") || strings.HasPrefix(input, "https://") {
+		parsedURL, err = url.Parse(input)
+	} else {
+		// 尝试添加http://前缀
+		parsedURL, err = url.Parse("http://" + input)
+	}
+
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse HTTP URL: %v", err)
+	}
+
+	config := &ProxyConfig{
+		Type:     "http",
+		Protocol: "http",
+		Server:   parsedURL.Hostname(),
+	}
+
+	// 解析端口
+	port, err := strconv.Atoi(parsedURL.Port())
+	if err != nil {
+		// 如果没有指定端口，使用默认端口
+		if parsedURL.Scheme == "https" {
+			config.Port = 443
+		} else {
+			config.Port = 80
+		}
+	} else {
+		config.Port = port
+	}
+
+	// 解析用户名和密码
+	var username, password string
+	if parsedURL.User != nil {
+		username = parsedURL.User.Username()
+		password, _ = parsedURL.User.Password()
+	}
+
+	// 解析备注
+	if parsedURL.Fragment != "" {
+		config.Name = parsedURL.Fragment
+	} else {
+		config.Name = fmt.Sprintf("http-%s:%d", config.Server, config.Port)
+	}
+
+	// 创建设置映射
+	settings := map[string]interface{}{
+		"udp": false, // HTTP代理不支持UDP
+	}
+
+	// 添加认证信息
+	if username != "" {
+		settings["username"] = username
+		if password != "" {
+			settings["password"] = password
+		}
+	}
+
+	// 如果是HTTPS，添加TLS配置
+	if parsedURL.Scheme == "https" {
+		settings["tls"] = true
+	}
+
+	config.Settings = settings
+	config.UDP = false
+
+	p.logger.Infof("Successfully parsed HTTP configuration for server: %s:%d", config.Server, config.Port)
+	return config, nil
+}
+
+// Validate 验证HTTP配置
+func (p *HTTPParser) Validate(config *ProxyConfig) error {
+	p.logger.Debugf("Validating HTTP configuration")
+
+	// 检查必要字段
+	if config.Server == "" {
+		return fmt.Errorf("server address is required")
+	}
+
+	if config.Port <= 0 || config.Port > 65535 {
+		return fmt.Errorf("invalid port number: %d", config.Port)
+	}
+
+	// 验证认证信息
+	username := p.getUsername(config)
+	password := p.getPassword(config)
+
+	// 如果提供了用户名，验证密码是否也提供
+	if username != "" && password == "" {
+		p.logger.Warn("Username provided but password is empty")
+	}
+
+	// 如果没有提供用户名，确保也没有密码
+	if username == "" && password != "" {
+		return fmt.Errorf("password provided without username")
+	}
+
+	// 验证TLS配置
+	tlsEnabled := p.getTLS(config)
+	if tlsEnabled && config.Port != 443 {
+		p.logger.Warnf("HTTPS proxy detected but port is not 443: %d", config.Port)
+	}
+
+	p.logger.Debug("HTTP configuration validation passed")
+	return nil
+}
+
+// getUsername 从配置中获取用户名
+func (p *HTTPParser) getUsername(config *ProxyConfig) string {
+	if username, exists := config.Settings["username"]; exists {
+		if usernameStr, ok := username.(string); ok {
+			return usernameStr
+		}
+	}
+	return ""
+}
+
+// getPassword 从配置中获取密码
+func (p *HTTPParser) getPassword(config *ProxyConfig) string {
+	if password, exists := config.Settings["password"]; exists {
+		if passwordStr, ok := password.(string); ok {
+			return passwordStr
+		}
+	}
+	return ""
+}
+
+// getTLS 从配置中获取TLS设置
+func (p *HTTPParser) getTLS(config *ProxyConfig) bool {
+	if tls, exists := config.Settings["tls"]; exists {
+		if tlsBool, ok := tls.(bool); ok {
+			return tlsBool
+		}
+	}
+	return false
+}
+
+// GetSupportedProtocols 获取支持的协议
+func (p *HTTPParser) GetSupportedProtocols() []string {
+	return []string{"http", "https"}
+}