65 lines
1.6 KiB
Go
65 lines
1.6 KiB
Go
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
"log"
|
|
"net/http"
|
|
"os"
|
|
"path"
|
|
)
|
|
|
|
func passwd(w http.ResponseWriter, r *http.Request) {
|
|
if addr := r.Header.Get("X-Forwarded-For"); addr != "" {
|
|
r.RemoteAddr = addr
|
|
}
|
|
log.Printf("%s \"%s %s\" [%s]\n", r.RemoteAddr, r.Method, r.URL.Path, r.UserAgent())
|
|
|
|
w.Header().Set("Content-Type", "text/plain")
|
|
|
|
// Check request type and size
|
|
if r.Method != "POST" {
|
|
http.Error(w,
|
|
"Invalid request",
|
|
http.StatusBadRequest)
|
|
return
|
|
} else if r.ContentLength < 0 || r.ContentLength > 655360 {
|
|
http.Error(w,
|
|
"Request entity too large",
|
|
http.StatusRequestEntityTooLarge)
|
|
return
|
|
}
|
|
|
|
// Authenticate the request
|
|
|
|
// Retrieve the file
|
|
file, _, err := r.FormFile("shadow")
|
|
if err != nil {
|
|
log.Println("Error when retrieving shadow file from", r.RemoteAddr, err.Error())
|
|
http.Error(w, "Unable to read your passwd file: something is wrong in your request", http.StatusBadRequest)
|
|
return
|
|
}
|
|
defer file.Close()
|
|
|
|
// Save the file
|
|
fd, err := os.Create(path.Join(tftpDir, fmt.Sprintf("%s.shadow", r.RemoteAddr)))
|
|
if err != nil {
|
|
log.Println("Error when creating shadow file from", r.RemoteAddr, err.Error())
|
|
http.Error(w, "Unable to treat your passwd file, please try again later", http.StatusInternalServerError)
|
|
return
|
|
}
|
|
defer fd.Close()
|
|
|
|
_, err = io.Copy(fd, file)
|
|
if err != nil {
|
|
log.Println("Error when saving shadow file from", r.RemoteAddr, err.Error())
|
|
http.Error(w, "Unable to save your passwd file, please try again later", http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
// Generate the new cpio archive
|
|
|
|
log.Println("Registered shadow from", r.RemoteAddr)
|
|
http.Error(w, "Success", http.StatusOK)
|
|
}
|