Change banner logging to stderr (#282)

* Change banner logging to stderr

* Edit CHANGELOG and CONTRIBUTORS

* fix: add to contributors according to sort order

CHANGELOG.md

@@ -2,6 +2,7 @@
 - master
   - New
     - New CLI flag `-rate` to set maximum rate of requests per second. The adjustment is dynamic.
+    - Change banner logging to stderr instead of stdout.
 
   - Changed
     - Pre-flight errors are now displayed also after the usage text to prevent the need to scroll through backlog.

CONTRIBUTORS.md

@@ -16,6 +16,7 @@
 * [jimen0](https://github.com/jimen0)
 * [joohoi](https://github.com/joohoi)
 * [jvesiluoma](https://github.com/jvesiluoma)
+* [Kiblyn11](https://github.com/Kiblyn11)
 * [lc](https://github.com/lc)
 * [nnwakelam](https://twitter.com/nnwakelam)
 * [oh6hay](https://github.com/oh6hay)

pkg/output/stdout.go

@@ -51,7 +51,7 @@ func NewStdoutput(conf *ffuf.Config) *Stdoutput {
 }
 
 func (s *Stdoutput) Banner() error {
-	fmt.Printf("%s\n       v%s\n%s\n\n", BANNER_HEADER, ffuf.VERSION, BANNER_SEP)
+	fmt.Fprintf(os.Stderr ,"%s\n       v%s\n%s\n\n", BANNER_HEADER, ffuf.VERSION, BANNER_SEP)
 	printOption([]byte("Method"), []byte(s.config.Method))
 	printOption([]byte("URL"), []byte(s.config.Url))
 
@@ -142,7 +142,7 @@ func (s *Stdoutput) Banner() error {
 	for _, f := range s.config.Filters {
 		printOption([]byte("Filter"), []byte(f.Repr()))
 	}
-	fmt.Printf("%s\n\n", BANNER_SEP)
+	fmt.Fprintf(os.Stderr, "%s\n\n", BANNER_SEP)
 	return nil
 }
 
@@ -430,7 +430,7 @@ func (s *Stdoutput) colorize(input string, status int64) string {
 }
 
 func printOption(name []byte, value []byte) {
-	fmt.Printf(" :: %-16s : %s\n", name, value)
+	fmt.Fprintf(os.Stderr, " :: %-16s : %s\n", name, value)
 }
 
 func inSlice(key string, slice []string) bool {