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@@ -4,7 +4,10 @@ import (
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"encoding/base64"
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"encoding/json"
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"math/rand"
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+ "net/url"
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+ "regexp"
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"strconv"
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+ "strings"
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"unsafe"
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)
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@@ -95,3 +98,95 @@ func GetJsonString(data any) string {
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b, _ := json.Marshal(data)
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return string(b)
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}
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+
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+// MaskSensitiveInfo masks sensitive information like URLs, IPs in a string
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+// Example:
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+// http://example.com -> http://***.com
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+// https://api.test.org/v1/users/123?key=secret -> https://***.org/***/***/?key=***
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+// https://sub.domain.co.uk/path/to/resource -> https://***.co.uk/***/***
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+// 192.168.1.1 -> ***.***.***.***
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+func MaskSensitiveInfo(str string) string {
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+ // Mask URLs
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+ urlPattern := regexp.MustCompile(`(http|https)://[^\s/$.?#].[^\s]*`)
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+ str = urlPattern.ReplaceAllStringFunc(str, func(urlStr string) string {
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+ u, err := url.Parse(urlStr)
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+ if err != nil {
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+ return urlStr
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+ }
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+
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+ host := u.Host
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+ if host == "" {
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+ return urlStr
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+ }
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+
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+ // Split host by dots
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+ parts := strings.Split(host, ".")
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+ if len(parts) < 2 {
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+ // If less than 2 parts, just mask the whole host
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+ return u.Scheme + "://***" + u.Path
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+ }
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+
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+ // Keep the TLD (Top Level Domain) and mask the rest
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+ var maskedHost string
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+ if len(parts) == 2 {
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+ // example.com -> ***.com
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+ maskedHost = "***." + parts[len(parts)-1]
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+ } else {
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+ // Handle cases like sub.domain.co.uk or api.example.com
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+ // Keep last 2 parts if they look like country code TLD (co.uk, com.cn, etc.)
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+ lastPart := parts[len(parts)-1]
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+ secondLastPart := parts[len(parts)-2]
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+
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+ if len(lastPart) == 2 && len(secondLastPart) <= 3 {
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+ // Likely country code TLD like co.uk, com.cn
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+ maskedHost = "***." + secondLastPart + "." + lastPart
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+ } else {
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+ // Regular TLD like .com, .org
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+ maskedHost = "***." + lastPart
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+ }
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+ }
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+
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+ result := u.Scheme + "://" + maskedHost
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+
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+ // Mask path
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+ if u.Path != "" && u.Path != "/" {
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+ pathParts := strings.Split(strings.Trim(u.Path, "/"), "/")
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+ maskedPathParts := make([]string, len(pathParts))
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+ for i := range pathParts {
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+ if pathParts[i] != "" {
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+ maskedPathParts[i] = "***"
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+ }
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+ }
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+ if len(maskedPathParts) > 0 {
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+ result += "/" + strings.Join(maskedPathParts, "/")
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+ }
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+ } else if u.Path == "/" {
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+ result += "/"
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+ }
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+
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+ // Mask query parameters
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+ if u.RawQuery != "" {
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+ values, err := url.ParseQuery(u.RawQuery)
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+ if err != nil {
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+ // If can't parse query, just mask the whole query string
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+ result += "?***"
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+ } else {
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+ maskedParams := make([]string, 0, len(values))
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+ for key := range values {
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+ maskedParams = append(maskedParams, key+"=***")
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+ }
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+ if len(maskedParams) > 0 {
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+ result += "?" + strings.Join(maskedParams, "&")
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+ }
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+ }
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+ }
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+
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+ return result
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+ })
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+
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+ // Mask IP addresses
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+ ipPattern := regexp.MustCompile(`\b(?:\d{1,3}\.){3}\d{1,3}\b`)
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+ str = ipPattern.ReplaceAllString(str, "***.***.***.***")
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+
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+ return str
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+}
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