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login-validator: add IP

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This commit is contained in:
nemunaire 2019-02-28 02:27:33 +01:00
parent 081b22a64a
commit 0b05e8539d
4 changed files with 31 additions and 13 deletions
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3
pkg/challenge/init
View File

@ -19,6 +19,9 @@ cmdline() {
# Get some command line options
USER_LOGIN=$(cmdline adlin.login)
USER_PKEY=$(cmdline adlin.key)
USER_IP=$(cmdline adlin.ip)
[ -n "${USER_IP}" ] && echo "${USER_IP}" > /root/my_ip
# Define hostname
hostname adlin-${USER_LOGIN}

2
pkg/login-validator/cmd/arp.go
View File

@ -52,7 +52,7 @@ func ARPAnalyze() (ents []ARPEntry, err error) {
func ARPContainsIP(ents []ARPEntry, ip net.IP) *ARPEntry {
for i, e := range ents {
if e.IP.Equal(ip) && e.Flags == 2 {
if e.IP.Equal(ip) && (e.Flags == 2 || e.Flags == 6) {
return &ents[i]
}
}

23
pkg/login-validator/cmd/login.go
View File

@ -9,7 +9,6 @@ import (
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"log"
"net"
"net/http"
@ -171,6 +170,7 @@ func (l loginChecker) ServeHTTP(w http.ResponseWriter, r *http.Request) {
if mac == nil {
log.Printf("Unable to find MAC address for given IP (%s)\n", ip)
http.Error(w, "Internal server error. Please retry in a few minutes", http.StatusInternalServerError)
return
}
// Register the user remotely
@ -178,7 +178,7 @@ func (l loginChecker) ServeHTTP(w http.ResponseWriter, r *http.Request) {
log.Println("Error on remote registration:", err)
http.Error(w, "Internal server error. Please retry in a few minutes", http.StatusInternalServerError)
return
} else if err := l.lateLoginAction(lu.Username, r.RemoteAddr, *mac); err != nil {
} else if err := l.lateLoginAction(lu.Username, r.RemoteAddr, *mac, ip); err != nil {
log.Println("Error on late login action:", err)
http.Error(w, "Internal server error. Please retry in a few minutes", http.StatusInternalServerError)
return
@ -188,7 +188,13 @@ func (l loginChecker) ServeHTTP(w http.ResponseWriter, r *http.Request) {
}
}
func (l loginChecker) registerUser(username, remoteAddr string, ent ARPEntry) ([]byte, error) {
type myIP struct {
Id int64 `json:"id"`
Login string `json:"login"`
IP string `json:"ip"`
}
func (l loginChecker) registerUser(username, remoteAddr string, ent ARPEntry) (net.IP, error) {
bts, err := json.Marshal(map[string]interface{}{"login": username, "ip": remoteAddr, "mac": fmt.Sprintf("%02x:%02x:%02x:%02x:%02x:%02x", ent.HWAddress[0], ent.HWAddress[1], ent.HWAddress[2], ent.HWAddress[3], ent.HWAddress[4], ent.HWAddress[5])})
if err != nil {
return nil, nil
@ -211,10 +217,15 @@ func (l loginChecker) registerUser(username, remoteAddr string, ent ARPEntry) ([
if resp.StatusCode != http.StatusOK {
return nil, errors.New(resp.Status)
} else {
return ioutil.ReadAll(resp.Body)
dec := json.NewDecoder(resp.Body)
var myip myIP
if err := dec.Decode(&myip); err != nil {
return nil, err
}
return net.ParseIP(myip.IP), nil
}
}
func (l loginChecker) lateLoginAction(username, remoteAddr string, mac ARPEntry) error {
return RegisterUserMAC(mac, username)
func (l loginChecker) lateLoginAction(username, remoteAddr string, mac ARPEntry, ip net.IP) error {
return RegisterUserMAC(mac, ip, username)
}

16
pkg/login-validator/cmd/pxetpl.go
View File

@ -15,19 +15,19 @@ const pxeUserTplPath = "pxelinux.cfg/tpl"
const ipxeUserTplPath = "pxelinux.cfg/tpl.ipxe"
const pxeUserPath = "pxelinux.cfg"
func RegisterUserMAC(ent ARPEntry, username string) error {
if err := registerUser(ipxeUserTplPath, fmt.Sprintf("%02x:%02x:%02x:%02x:%02x:%02x.ipxe", ent.HWAddress[0], ent.HWAddress[1], ent.HWAddress[2], ent.HWAddress[3], ent.HWAddress[4], ent.HWAddress[5]), username); err != nil {
func RegisterUserMAC(ent ARPEntry, ip net.IP, username string) error {
if err := registerUser(ipxeUserTplPath, fmt.Sprintf("%02x:%02x:%02x:%02x:%02x:%02x.ipxe", ent.HWAddress[0], ent.HWAddress[1], ent.HWAddress[2], ent.HWAddress[3], ent.HWAddress[4], ent.HWAddress[5]), username, ip); err != nil {
return err
} else {
return registerUser(pxeUserTplPath, fmt.Sprintf("%02x-%02x-%02x-%02x-%02x-%02x-%02x", ent.HWType, ent.HWAddress[0], ent.HWAddress[1], ent.HWAddress[2], ent.HWAddress[3], ent.HWAddress[4], ent.HWAddress[5]), username)
return registerUser(pxeUserTplPath, fmt.Sprintf("%02x-%02x-%02x-%02x-%02x-%02x-%02x", ent.HWType, ent.HWAddress[0], ent.HWAddress[1], ent.HWAddress[2], ent.HWAddress[3], ent.HWAddress[4], ent.HWAddress[5]), username, ip)
}
}
func RegisterUserIP(ip net.IP, username string) error {
return registerUser(pxeUserTplPath, fmt.Sprintf("%02X%02X%02X%02X", ip.To4()[0], ip.To4()[1], ip.To4()[2], ip.To4()[3]), username)
return registerUser(pxeUserTplPath, fmt.Sprintf("%02X%02X%02X%02X", ip.To4()[0], ip.To4()[1], ip.To4()[2], ip.To4()[3]), username, ip)
}
func registerUser(tplPath string, filename string, username string) error {
func registerUser(tplPath string, filename string, username string, ip net.IP) error {
if pxeTplCnt, err := ioutil.ReadFile(path.Join(tftpDir, tplPath)); err != nil {
return err
} else if userfd, err := os.OpenFile(path.Join(tftpDir, pxeUserPath, filename), os.O_RDWR|os.O_CREATE, 0644); err != nil {
@ -39,7 +39,11 @@ func registerUser(tplPath string, filename string, username string) error {
if pxeTmpl, err := template.New("pxeUser").Parse(string(pxeTplCnt)); err != nil {
return err
} else if err := pxeTmpl.Execute(userfd, map[string]string{"username": username, "pkey": fmt.Sprintf("%x", pkey.Sum([]byte(username)))}); err != nil {
} else if err := pxeTmpl.Execute(userfd, map[string]string{
"username": username,
"pkey": fmt.Sprintf("%x", pkey.Sum([]byte(username))),
"ip": fmt.Sprintf("%d.%d.%d.%d", ip.To4()[0], ip.To4()[1], ip.To4()[2], ip.To4()[3]),
}); err != nil {
return err
}
}