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login.go
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login.go
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package main
import (
"fmt"
"html/template"
"log"
"net/http"
"github.com/gobuffalo/packr"
"github.com/julienschmidt/httprouter"
)
var indexTemplate *template.Template = nil
func ShowLoginForm(message string, parentRedirectTo string) httprouter.Handle {
return func(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
if indexTemplate == nil {
tplString, err := packr.NewBox("./templates").FindString("index.tpl")
if err != nil {
log.Fatal(err)
}
_t, err := template.New("index.tpl").Parse(tplString)
if err != nil {
log.Fatal(err)
}
indexTemplate = _t
}
t := indexTemplate
redirectTo := parentRedirectTo
if redirectTo == "" {
redirectTo = r.Header.Get("X-GATEWAY-REDIRECT-TO")
}
templateMap := map[string]string{
"RedirectTo": redirectTo,
"Message": message,
}
err := t.Execute(w, templateMap)
if err != nil {
log.Fatal(err)
}
}
}
func Login(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
config := LoadConfig()
redirectTo := r.FormValue("redirect_to")
if redirectTo == "" {
redirectTo = r.Header.Get("X-GATEWAY-REDIRECT-TO")
}
l, err := ConnectLDAP()
if err != nil {
log.Printf("LDAP Error : %+v\n", err)
if config.LDAP.IsShowErrorDetails {
ShowLoginForm(fmt.Sprintf("LDAP Error : %s", err.Error()), redirectTo)(w, r, p)
} else {
ShowLoginForm("Failed to connect to LDAP server.", redirectTo)(w, r, p)
}
return
}
defer l.Close()
username := r.FormValue("username")
password := r.FormValue("password")
if username == "" || password == "" {
ShowLoginForm("Invalid value!", redirectTo)(w, r, p)
return
}
err = AuthLDAP(l, username, password)
if err != nil {
log.Printf("Auth Error (%s) : %+v\n", username, err)
if config.LDAP.IsShowErrorDetails {
ShowLoginForm(fmt.Sprintf("Failed to login : %s", err.Error()), redirectTo)(w, r, p)
} else {
ShowLoginForm("Failed to login.", redirectTo)(w, r, p)
}
return
}
// log.Printf("Logged in : %s\n", username)
// Regenerate SessionID to prevent session fixitation attack
session := GetSessionManager().Load(r)
session.PutBool(w, "isLoggedIn", true)
session.PutString(w, "username", username)
session.RenewToken(w)
http.Redirect(w, r, redirectTo, http.StatusSeeOther)
}
func CookieLoginTest(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
session := GetSessionManager().Load(r)
isLoggedIn, _ := session.GetBool("isLoggedIn")
username, _ := session.GetString("username")
if !isLoggedIn {
w.WriteHeader(http.StatusForbidden)
} else {
w.Header().Set("X-AUTH-USERNAME", username)
w.WriteHeader(http.StatusOK)
}
}