blog/core/auth.go

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package core
import (
"errors"
"net/http"
"github.com/kirsle/blog/core/forms"
"github.com/kirsle/blog/core/models/users"
)
// Login logs the browser in as the given user.
func (b *Blog) Login(w http.ResponseWriter, r *http.Request, u *users.User) error {
session, err := b.store.Get(r, "session") // TODO session name
if err != nil {
return err
}
session.Values["logged-in"] = true
session.Values["user-id"] = u.ID
session.Save(r, w)
return nil
}
// LoginHandler shows and handles the login page.
func (b *Blog) LoginHandler(w http.ResponseWriter, r *http.Request) {
vars := &Vars{
Form: forms.Setup{},
}
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if r.Method == http.MethodPost {
form := &forms.Login{
Username: r.FormValue("username"),
Password: r.FormValue("password"),
}
vars.Form = form
err := form.Validate()
if err != nil {
vars.Error = err
} else {
// Test the login.
user, err := users.CheckAuth(form.Username, form.Password)
if err != nil {
vars.Error = errors.New("bad username or password")
} else {
// Login OK!
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b.Flash(w, r, "Login OK!")
b.Login(w, r, user)
// A next URL given? TODO: actually get to work
next := r.FormValue("next")
log.Info("Redirect after login to: %s", next)
if len(next) > 0 && next[0] == '/' {
b.Redirect(w, next)
} else {
b.Redirect(w, "/")
}
return
}
}
}
b.RenderTemplate(w, r, "login", vars)
}
// LogoutHandler logs the user out and redirects to the home page.
func (b *Blog) LogoutHandler(w http.ResponseWriter, r *http.Request) {
session, _ := b.store.Get(r, "session")
delete(session.Values, "logged-in")
delete(session.Values, "user-id")
session.Save(r, w)
b.Redirect(w, "/")
}