增加两个设置，可以自定义ASR混淆概率和字典文件

asr.go

@@ -113,10 +113,13 @@ func (s *SpeechRecognitionResponse) asrReplaceRandom() {
 	}
 }
 
-func asrResultObfuscate(r *http.Request, body []byte) ([]byte, error) {
+func asrResultObfuscate(r *http.Request, body []byte, replacePercentage int) ([]byte, error) {
 	if r.URL.Path != "/webcast/review/client_ai/upload_asr_result/" {
 		return nil, fmt.Errorf("not an asr request")
 	}
+	if !shouldApplyASRReplacement(replacePercentage) {
+		return nil, nil
+	}
 	obj := SpeechRecognitionResponse{}
 	err := obj.FromJSON(string(body))
 	if err != nil {
@@ -133,3 +136,13 @@ func asrResultObfuscate(r *http.Request, body []byte) ([]byte, error) {
 	}
 	return jsonData, nil
 }
+
+func shouldApplyASRReplacement(replacePercentage int) bool {
+	if replacePercentage <= 0 {
+		return false
+	}
+	if replacePercentage >= 100 {
+		return true
+	}
+	return rand.Intn(100) < replacePercentage
+}

config.go

@@ -17,6 +17,8 @@ func parseConfig(filename string) (*Config, error) {
 	config.Proxy.Port = 8080
 	config.Dump.OutputDir = "traffic_dumps"
 	config.Dump.DOIDir = "interest_dumps"
+	config.DictFile = "dict.txt"
+	config.ASR.ReplacePercentage = 100
 
 	// Parse the TOML file
 	_, err := toml.DecodeFile(filename, config)
@@ -24,6 +26,16 @@ func parseConfig(filename string) (*Config, error) {
 		return nil, fmt.Errorf("failed to parse config file %s: %v", filename, err)
 	}
 
+	if config.DictFile == "" {
+		config.DictFile = "dict.txt"
+	}
+	if config.ASR.ReplacePercentage < 0 {
+		config.ASR.ReplacePercentage = 0
+	}
+	if config.ASR.ReplacePercentage > 100 {
+		config.ASR.ReplacePercentage = 100
+	}
+
 	// Create dump directories if they don't exist
 	if err := createDumpDirectories(config); err != nil {
 		return nil, fmt.Errorf("failed to create dump directories: %v", err)
@@ -51,6 +63,6 @@ func createDumpDirectories(config *Config) error {
 }
 
 func (c *Config) String() string {
-	return fmt.Sprintf("Config{DomainsOfInterest: %v, Proxy: {Port: %d}, Dump: {OutputDir: %s, DOI_dir: %s}}",
-		c.DomainsOfInterest, c.Proxy.Port, c.Dump.OutputDir, c.Dump.DOIDir)
+	return fmt.Sprintf("Config{DomainsOfInterest: %v, DictFile: %s, Proxy: {Port: %d}, Dump: {OutputDir: %s, DOI_dir: %s}, ASR: {ReplacePercentage: %d}}",
+		c.DomainsOfInterest, c.DictFile, c.Proxy.Port, c.Dump.OutputDir, c.Dump.DOIDir, c.ASR.ReplacePercentage)
 }

config.toml

@@ -4,6 +4,8 @@ domains_of_interest = [
     "amemv.com"
 ]
 
+dict_file = "dict.txt"
+
 # Proxy server configuration
 [proxy]
 port = 8080
@@ -12,3 +14,7 @@ port = 8080
 [dump]
 output_dir = "traffic_dumps"
 DOI_dir = "interest_dumps"
+
+# ASR obfuscation configuration
+[asr]
+replace_percentage = 100

main.go

@@ -28,6 +28,7 @@ import (
 
 type Config struct {
 	DomainsOfInterest []string `toml:"domains_of_interest"`
+	DictFile          string   `toml:"dict_file"`
 	Proxy             struct {
 		Port int `toml:"port"`
 	} `toml:"proxy"`
@@ -35,6 +36,9 @@ type Config struct {
 		OutputDir string `toml:"output_dir"`
 		DOIDir    string `toml:"DOI_dir"`
 	} `toml:"dump"`
+	ASR struct {
+		ReplacePercentage int `toml:"replace_percentage"`
+	} `toml:"asr"`
 }
 
 type UserData struct {
@@ -66,8 +70,15 @@ func main() {
 
 	fmt.Println("MITM Proxy Server v1.4")
 
-	fmt.Println("Reading dictionary...")
-	dict, err := NewChineseDict("dict.txt")
+	// Load configuration
+	config, err := loadConfig("config.toml")
+	if err != nil {
+		log.Fatalf("Failed to load configuration: %v", err)
+	}
+	log.Println(config.String())
+
+	fmt.Printf("Reading dictionary from %s...\n", config.DictFile)
+	dict, err := NewChineseDict(config.DictFile)
 	if err != nil {
 		log.Fatalf("Failed to load dictionary: %v", err)
 	}
@@ -76,13 +87,6 @@ func main() {
 
 	fmt.Println("Starting MITM proxy server...")
 
-	// Load configuration
-	config, err := loadConfig("config.toml")
-	if err != nil {
-		log.Fatalf("Failed to load configuration: %v", err)
-	}
-	log.Println(config.String())
-
 	// Create output directories
 	if err := os.MkdirAll(config.Dump.OutputDir, 0755); err != nil {
 		log.Fatalf("Failed to create output directory: %v", err)
@@ -241,7 +245,7 @@ func (p *ProxyServer) setupHandlers() {
 			var newReqBody []byte = nil
 
 			if p.isDomainOfInterest(r.Host) {
-				newReqBody, err = asrResultObfuscate(r, reqBody)
+				newReqBody, err = asrResultObfuscate(r, reqBody, p.config.ASR.ReplacePercentage)
 				if err != nil && err.Error() != "not an asr request" {
 					log.Printf("Failed to obfuscate request body: %v", err)
 				}