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thankunext.go
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thankunext.go
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package main
import (
"fmt"
"io"
"net/http"
"os"
"regexp"
"strings"
)
func contains(elements []string, element string) bool {
for _, v := range elements {
if v == element {
return true
}
}
return false
}
func getBuildManifestPath(bodyContent string) string {
re, _ := regexp.Compile(`(?m)/_next/static/[\w-]+/_buildManifest\.js`)
return re.FindString(bodyContent)
}
func getPageContent(url string) string {
client := &http.Client{}
req, err := http.NewRequest("GET", url, nil)
if err != nil {
fmt.Fprintln(os.Stderr, "Error on NewRequest.", err)
os.Exit(1)
}
req.Header.Add("user-agent", "thankunext/1.0")
resp, err := client.Do(req)
if err != nil {
fmt.Fprintln(os.Stderr, "Error when accessing the url.", err)
os.Exit(1)
}
defer resp.Body.Close()
body, err := io.ReadAll(resp.Body)
if err != nil {
fmt.Fprintln(os.Stderr, "Error when loading page content.", err)
os.Exit(1)
}
return string(body)
}
func getBuildManifestContent(buildManifestPath string) string {
client := &http.Client{}
req, err := http.NewRequest("GET", buildManifestPath, nil)
if err != nil {
fmt.Fprintln(os.Stderr, "Error on NewRequest.", err)
os.Exit(1)
}
req.Header.Add("user-agent", "thankunext/1.0")
resp, err := client.Do(req)
if err != nil {
fmt.Fprintln(os.Stderr, "Error accessing buildManifest content.", err)
os.Exit(1)
}
defer resp.Body.Close()
body, err := io.ReadAll(resp.Body)
if err != nil {
fmt.Fprintln(os.Stderr, "Error when loading buildManifest content.", err)
os.Exit(1)
}
return string(body)
}
func parseBuildManifestContent(buildManifestContent string) []string {
re, _ := regexp.Compile(`"(/[a-zA-Z0-9_/\[\]\.-]+)"`)
var paths []string
for _, match := range re.FindAllStringSubmatch(buildManifestContent, -1) {
path := match[1]
if contains(paths, path) {
continue
}
paths = append(paths, path)
}
return paths
}
func main() {
fmt.Fprintln(os.Stderr, `<!-- thankunext v0.01, made by @c3l3si4n -->`)
if len(os.Args[1:]) > 0 {
target := strings.TrimSuffix(os.Args[1], "/")
pageContent := getPageContent(target)
buildManifestPath := getBuildManifestPath(pageContent)
if buildManifestPath == "" {
fmt.Fprintln(os.Stderr, "_buildManifest.js wasn't found. Is this site really running Next.js?")
os.Exit(0)
}
buildManifestContent := getBuildManifestContent(target + buildManifestPath)
paths := parseBuildManifestContent(buildManifestContent)
fmt.Println(strings.Join(paths, "\n"))
} else {
fmt.Printf("[thankunext] %s <url>", os.Args[0])
}
}