79 lines
2.0 KiB
Go
79 lines
2.0 KiB
Go
package main
|
|
|
|
import (
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
"net/http"
|
|
"strings"
|
|
|
|
"github.com/jcmturner/gokrb5/v8/client"
|
|
"github.com/jcmturner/gokrb5/v8/config"
|
|
"github.com/jcmturner/gokrb5/v8/iana/etypeID"
|
|
"github.com/jcmturner/gokrb5/v8/krberror"
|
|
"github.com/julienschmidt/httprouter"
|
|
)
|
|
|
|
func parseETypes(s []string, w bool) []int32 {
|
|
var eti []int32
|
|
for _, et := range s {
|
|
if !w {
|
|
var weak bool
|
|
for _, wet := range strings.Fields(config.WeakETypeList) {
|
|
if et == wet {
|
|
weak = true
|
|
break
|
|
}
|
|
}
|
|
if weak {
|
|
continue
|
|
}
|
|
}
|
|
i := etypeID.EtypeSupported(et)
|
|
if i != 0 {
|
|
eti = append(eti, i)
|
|
}
|
|
}
|
|
return eti
|
|
}
|
|
|
|
func checkAuthKrb5(w http.ResponseWriter, _ httprouter.Params, body []byte) (interface{}, error) {
|
|
var lf loginForm
|
|
if err := json.Unmarshal(body, &lf); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
found := false
|
|
for _, u := range localAuthUsers {
|
|
if lf.Login == u {
|
|
found = true
|
|
break
|
|
}
|
|
}
|
|
|
|
if !found {
|
|
return nil, fmt.Errorf("You are not allowed to log you in this way. Please use OpenID Connect.")
|
|
}
|
|
|
|
cnf := config.New()
|
|
cnf.LibDefaults.DNSLookupKDC = true
|
|
cnf.LibDefaults.DNSLookupRealm = true
|
|
cnf.LibDefaults.DefaultTGSEnctypeIDs = parseETypes(cnf.LibDefaults.DefaultTGSEnctypes, cnf.LibDefaults.AllowWeakCrypto)
|
|
cnf.LibDefaults.DefaultTktEnctypeIDs = parseETypes(cnf.LibDefaults.DefaultTktEnctypes, cnf.LibDefaults.AllowWeakCrypto)
|
|
cnf.LibDefaults.PermittedEnctypeIDs = parseETypes(cnf.LibDefaults.PermittedEnctypes, cnf.LibDefaults.AllowWeakCrypto)
|
|
|
|
c := client.NewWithPassword(lf.Login, "CRI.EPITA.FR", lf.Password, cnf)
|
|
if err := c.Login(); err != nil {
|
|
if errk, ok := err.(krberror.Krberror); ok {
|
|
if errk.RootCause == krberror.NetworkingError {
|
|
return nil, errors.New(`{"status": "Authentication system unavailable, please retry."}`)
|
|
} else if errk.RootCause == krberror.KDCError {
|
|
return nil, errors.New(`{"status": "Invalid username or password"}`)
|
|
}
|
|
}
|
|
return nil, err
|
|
} else {
|
|
return dummyAuth(w, nil, body)
|
|
}
|
|
}
|