Added redirect location in stdout output (#59)

* Added redirect location in stdout output

* Keep conditional logic outside of the resultNormal function + Better help message for redirect location

* Moved GetRedirectLocation as a Response public method

* Added changelog entry + (Redirect become ->)

README.md

@@ -7,7 +7,6 @@
           \/_/    \/_/   \/___/    \/_/
 ```
 
-
 # ffuf - Fuzz Faster U Fool
 
 A fast web fuzzer written in Go.
@@ -181,14 +180,18 @@ The only dependency of ffuf is Go 1.11. No dependencies outside of Go standard l
 ## Changelog
 
 - master
+
   - New
+    - New CLI flag: -l, shows target location of redirect responses
   - Changed
     - New CLI flag: -i, dummy flag that does nothing. for compatibility with copy as curl.
     - New CLI flag: -b/--cookie, cookie data for compatibility with copy as curl.
     - Filtering and matching by status code, response size or word count now allow using ranges in addition to single values
 
 - v0.10
+
   - New
+
     - New CLI flag: -ac to autocalibrate response size and word filters based on few preset URLs.
     - New CLI flag: -timeout to specify custom timeouts for all HTTP requests.
     - New CLI flag: --data for compatibility with copy as curl functionality of browsers.
@@ -217,6 +220,7 @@ The only dependency of ffuf is Go 1.11. No dependencies outside of Go standard l
     - Regex matching / filtering now matches the headers alongside of the response body
 
 ## TODO
+
 - Tests!
 - Optional scope for redirects
 - Client / server architecture to queue jobs and fetch the results later

main.go

@@ -82,6 +82,7 @@ func main() {
 	flag.StringVar(&conf.Method, "X", "GET", "HTTP method to use")
 	flag.StringVar(&conf.OutputFile, "o", "", "Write output to file")
 	flag.StringVar(&opts.outputFormat, "of", "json", "Output file format. Available formats: json, csv, ecsv")
+	flag.BoolVar(&conf.ShowRedirectLocation, "l", false, "Show target location of redirect responses")
 	flag.BoolVar(&conf.Quiet, "s", false, "Do not print additional information (silent mode)")
 	flag.BoolVar(&conf.StopOn403, "sf", false, "Stop when > 95% of responses return 403 Forbidden")
 	flag.BoolVar(&conf.StopOnErrors, "se", false, "Stop on spurious errors")

pkg/ffuf/config.go

@@ -36,6 +36,7 @@ type Config struct {
 	StopOnAll            bool
 	FollowRedirects      bool
 	AutoCalibration      bool
+	ShowRedirectLocation bool
 	Timeout              int
 	ProgressFrequency    int
 	Delay                optRange
@@ -60,6 +61,7 @@ func NewConfig(ctx context.Context) Config {
 	conf.StopOn403 = false
 	conf.StopOnErrors = false
 	conf.StopOnAll = false
+	conf.ShowRedirectLocation = false
 	conf.FollowRedirects = false
 	conf.InputCommand = ""
 	conf.InputNum = 0

pkg/ffuf/response.go

@@ -15,6 +15,17 @@ type Response struct {
 	Request       *Request
 }
 
+// GetRedirectLocation returns the redirect location for a 3xx redirect HTTP response
+func (resp *Response) GetRedirectLocation() string {
+
+	redirectLocation := ""
+	if resp.StatusCode >= 300 && resp.StatusCode <= 399 {
+		redirectLocation = resp.Headers["Location"][0]
+	}
+
+	return redirectLocation
+}
+
 func NewResponse(httpresp *http.Response, req *Request) Response {
 	var resp Response
 	resp.Request = req

pkg/output/stdout.go

@@ -156,14 +156,25 @@ func (s *Stdoutput) resultQuiet(resp ffuf.Response) {
 }
 
 func (s *Stdoutput) resultNormal(resp ffuf.Response) {
-	var res_str string
+	var responseString string
 	if len(s.config.InputCommand) > 0 {
 		// If we're using external command for input, display the position instead of input
-		res_str = fmt.Sprintf("%s%-23s [Status: %s, Size: %d, Words: %d]", TERMINAL_CLEAR_LINE, strconv.Itoa(resp.Request.Position), s.colorizeStatus(resp.StatusCode), resp.ContentLength, resp.ContentWords)
+		responseString = fmt.Sprintf("%s%-23s [Status: %s, Size: %d, Words: %d%s]", TERMINAL_CLEAR_LINE, strconv.Itoa(resp.Request.Position), s.colorizeStatus(resp.StatusCode), resp.ContentLength, resp.ContentWords, s.addRedirectLocation(resp))
 	} else {
-		res_str = fmt.Sprintf("%s%-23s [Status: %s, Size: %d, Words: %d]", TERMINAL_CLEAR_LINE, resp.Request.Input, s.colorizeStatus(resp.StatusCode), resp.ContentLength, resp.ContentWords)
+		responseString = fmt.Sprintf("%s%-23s [Status: %s, Size: %d, Words: %d%s]", TERMINAL_CLEAR_LINE, resp.Request.Input, s.colorizeStatus(resp.StatusCode), resp.ContentLength, resp.ContentWords, s.addRedirectLocation(resp))
 	}
-	fmt.Println(res_str)
+	fmt.Println(responseString)
+}
+
+// addRedirectLocation returns a formatted string containing the Redirect location or returns an empty string
+func (s *Stdoutput) addRedirectLocation(resp ffuf.Response) string {
+	if s.config.ShowRedirectLocation == true {
+		redirectLocation := resp.GetRedirectLocation()
+		if redirectLocation != "" {
+			return fmt.Sprintf(", ->: %s", redirectLocation)
+		}
+	}
+	return ""
 }
 
 func (s *Stdoutput) colorizeStatus(status int64) string {