removes duplicate code

internal/webserver/httpTemplate.go

@@ -16,7 +16,7 @@ import (
 
 const (
 	ERR_PARSE_TEMPLATE = "Template Parse Error"
-	ERR_EXEC_TEMPLATE = "Template Execution Error"
+	ERR_EXEC_TEMPLATE  = "Template Execution Error"
 )
 
 type webErrStruct struct {
@@ -57,31 +57,8 @@ func tmpltWebRoot(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	var (
+	msgBuffer, err := processCVEData(tmplt, w)
-		msgBuffer bytes.Buffer
+	if err != nil {
-		cves      []cisa.VulStruct
-		num       int = 3
-	)
-
-	c := cisa.Read()
-	for _, i := range c.Vulnerabilities {
-		t, _ := time.Parse("2006-01-02", i.DateAdded)
-		if t.After(time.Now().Add(-time.Hour * 720)) {
-			cves = append(cves, i)
-		}
-	}
-
-	if len(cves) < 3 {
-		num = len(cves)
-	}
-
-	if err := tmplt.Execute(&msgBuffer, struct {
-		CVEs []cisa.VulStruct
-	}{
-		CVEs: cves[len(cves)-num:],
-	}); err != nil {
-		config.Cfg.Log.Debug(ERR_EXEC_TEMPLATE, "error", err)
-		tmpltError(w, http.StatusInternalServerError, ERR_PARSE_TEMPLATE)
 		return
 	}
 
@@ -124,6 +101,16 @@ func tmpltTXT(w http.ResponseWriter) {
 		return
 	}
 
+	msgBuffer, err := processCVEData(tmplt, w)
+	if err != nil {
+		return
+	}
+
+	w.Header().Add("Content-Type", TYPE_TEXT_PLAIN)
+	w.Write(msgBuffer.Bytes()) //nolint:errcheck
+}
+
+func processCVEData(tmplt *template.Template, w http.ResponseWriter) (bytes.Buffer, error) {
 	var (
 		msgBuffer bytes.Buffer
 		cves      []cisa.VulStruct
@@ -149,9 +136,8 @@ func tmpltTXT(w http.ResponseWriter) {
 	}); err != nil {
 		config.Cfg.Log.Debug(ERR_EXEC_TEMPLATE, "error", err)
 		tmpltError(w, http.StatusInternalServerError, ERR_PARSE_TEMPLATE)
-		return
+		return msgBuffer, err
 	}
 
-	w.Header().Add("Content-Type", TYPE_TEXT_PLAIN)
+	return msgBuffer, nil
-	w.Write(msgBuffer.Bytes()) //nolint:errcheck
 }