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package main
import (
"bufio"
"io"
"log"
"net/http"
"os"
"os/user"
"strings"
"golang.org/x/crypto/bcrypt"
)
func main() {
var msg string = ""
var adminHash []byte
var userHash []byte
user, err := user.Current()
if err != nil {
log.Fatal(err.Error())
}
file, err := os.Open(user.HomeDir + "/.status/auth")
if err != nil {
log.Fatal(err.Error())
}
defer file.Close()
scanner := bufio.NewScanner(file)
for scanner.Scan() {
line := scanner.Text()
if after, found := strings.CutPrefix(line, "admin:"); found {
adminHash = []byte(after)
}
if after, found := strings.CutPrefix(line, "user:"); found {
userHash = []byte(after)
}
}
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
username, password, ok := r.BasicAuth()
if ok {
err := bcrypt.CompareHashAndPassword(userHash, []byte(username+password))
if err != nil {
deny(w)
return
}
w.Write([]byte(msg))
return
}
deny(w)
})
http.HandleFunc("/update", func(w http.ResponseWriter, r *http.Request) {
username, password, ok := r.BasicAuth()
if ok {
err := bcrypt.CompareHashAndPassword(adminHash, []byte(username+password))
if err != nil {
deny(w)
return
}
if r.Method == "POST" {
buf, err := io.ReadAll(r.Body)
if err != nil {
http.Error(w, "Failed to read request body", http.StatusInternalServerError)
return
}
log.Print(string(buf))
msg = string(buf)
w.Write([]byte("success"))
return
}
}
deny(w)
})
http.HandleFunc("/generate-hash", func(w http.ResponseWriter, r *http.Request) {
username, password, ok := r.BasicAuth()
if ok {
hash, err := bcrypt.GenerateFromPassword([]byte(username+password), 0)
if err != nil {
http.Error(w, "Failed to generate hash", http.StatusInternalServerError)
return
}
log.Print(string(hash))
w.Write([]byte("Hash successfully generated (output to server log for some semblance of security)"))
return
}
deny(w)
})
log.Fatal(http.ListenAndServe(":"+os.Args[1], nil))
}
func deny(w http.ResponseWriter) {
w.Header().Set("WWW-Authenticate", `Basic realm="restricted", charset="UTF-8"`)
http.Error(w, "Unauthorized", http.StatusUnauthorized)
}
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