89 lines
2.0 KiB
Go
89 lines
2.0 KiB
Go
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package core
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import (
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"context"
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"errors"
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"net/http"
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"github.com/kirsle/blog/core/forms"
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"github.com/kirsle/blog/core/models/users"
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)
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type key int
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const (
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userKey key = iota
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)
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// AuthMiddleware loads the user's authentication state.
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func (b *Blog) AuthMiddleware(w http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
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session, _ := b.store.Get(r, "session")
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log.Info("Session: %v", session.Values)
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if loggedIn, ok := session.Values["logged-in"].(bool); ok && loggedIn {
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// They seem to be logged in. Get their user object.
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id := session.Values["user-id"].(int)
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u, err := users.Load(id)
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if err != nil {
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log.Error("Error loading user ID %d from session: %v", id, err)
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next(w, r)
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return
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}
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ctx := context.WithValue(r.Context(), userKey, u)
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next(w, r.WithContext(ctx))
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}
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next(w, r)
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}
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// LoginHandler shows and handles the login page.
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func (b *Blog) LoginHandler(w http.ResponseWriter, r *http.Request) {
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vars := &Vars{
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Form: forms.Setup{},
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}
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if r.Method == "POST" {
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form := &forms.Login{
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Username: r.FormValue("username"),
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Password: r.FormValue("password"),
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}
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vars.Form = form
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err := form.Validate()
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if err != nil {
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vars.Error = err
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} else {
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// Test the login.
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user, err := users.CheckAuth(form.Username, form.Password)
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if err != nil {
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vars.Error = errors.New("bad username or password")
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} else {
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// Login OK!
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vars.Flash = "Login OK!"
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// Log in the user.
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session, err := b.store.Get(r, "session") // TODO session name
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if err != nil {
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vars.Error = err
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} else {
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session.Values["logged-in"] = true
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session.Values["user-id"] = user.ID
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session.Save(r, w)
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}
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b.Redirect(w, "/login")
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return
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}
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}
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}
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b.RenderTemplate(w, r, "login", vars)
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}
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// LogoutHandler logs the user out and redirects to the home page.
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func (b *Blog) LogoutHandler(w http.ResponseWriter, r *http.Request) {
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session, _ := b.store.Get(r, "session")
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delete(session.Values, "logged-in")
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delete(session.Values, "user-id")
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session.Save(r, w)
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b.Redirect(w, "/")
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}
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