// loginPage authenticates users
func loginPage(writer http.ResponseWriter, req *http.Request) {
// here we define some static record for comparison
valid_user := "******"
valid_pass := "******"
if req.FormValue("user") == valid_user && req.FormValue("pass") == valid_pass {
sess, _ := mod_sessions.CheckSession(req, writer)
sess.Values["session_id"] = sess.ID // we set this to indicate we're logged in.
mod_sessions.Save(req, writer, sess)
http.Redirect(writer, req, "/", http.StatusFound)
return
}
http.Redirect(writer, req, "/?error=login", http.StatusFound)
return
}
// indexPage() is a handler which will load some template and send the result back to the client
func indexPage(writer http.ResponseWriter, req *http.Request) {
tpl, err := gwp_template.Load(ctx, "index.html")
if err != nil {
http.Error(writer, err.Error(), http.StatusInternalServerError)
return
}
var displayContent bool
// if session parameter "session_id" is present, we already have session set and we can show the content
// otherwise, we will display login form
sess, ok := mod_sessions.CheckSession(req, writer, "session_id")
if ok {
displayContent = true
} else {
displayContent = false
}
var s_id string
if sid, ok := sess.Values["session_id"]; ok {
s_id = sid.(string)
} else {
s_id = sess.ID
}
errmsg := req.FormValue("error")
var msg string
if errmsg == "login" {
msg = "Invalid login"
}
mydata := Example{ID: s_id, Name: "Joe", LoggedIn: displayContent, ErrorMsg: msg}
buff := new(bytes.Buffer)
tpl.Execute(buff, mydata)
writer.Write(buff.Bytes())
}