105 lines
3.2 KiB
Go
105 lines
3.2 KiB
Go
package hwsauth
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import (
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"net/http"
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"time"
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"git.haelnorr.com/h/golib/hws"
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)
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// LoginReq returns a middleware that requires the user to be authenticated.
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// If the user is not authenticated, it returns a 401 Unauthorized error page.
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//
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// Example:
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//
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// protectedHandler := auth.LoginReq(http.HandlerFunc(dashboardHandler))
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// server.AddRoute("GET", "/dashboard", protectedHandler)
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func (auth *Authenticator[T, TX]) LoginReq(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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_, ok := getAuthorizedModel[T](r.Context())
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if !ok {
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page, err := auth.errorPage(http.StatusUnauthorized)
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if err != nil {
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auth.server.ThrowError(w, r, hws.HWSError{
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Error: err,
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Message: "Failed to get valid error page",
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StatusCode: http.StatusInternalServerError,
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RenderErrorPage: true,
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})
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}
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err = page.Render(r.Context(), w)
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if err != nil {
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auth.server.ThrowError(w, r, hws.HWSError{
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Error: err,
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Message: "Failed to render error page",
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StatusCode: http.StatusInternalServerError,
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RenderErrorPage: true,
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})
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}
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return
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}
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next.ServeHTTP(w, r)
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})
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}
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// LogoutReq returns a middleware that redirects authenticated users to the landing page.
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// Use this for login and registration pages to prevent logged-in users from accessing them.
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//
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// Example:
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//
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// loginPageHandler := auth.LogoutReq(http.HandlerFunc(showLoginPage))
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// server.AddRoute("GET", "/login", loginPageHandler)
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func (auth *Authenticator[T, TX]) LogoutReq(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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_, ok := getAuthorizedModel[T](r.Context())
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if ok {
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http.Redirect(w, r, auth.LandingPage, http.StatusFound)
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return
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}
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next.ServeHTTP(w, r)
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})
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}
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// FreshReq returns a middleware that requires a fresh authentication token.
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// If the token is not fresh (recently issued), it returns a 444 status code.
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// Use this for sensitive operations like password changes or account deletions.
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//
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// Example:
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//
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// changePasswordHandler := auth.FreshReq(http.HandlerFunc(handlePasswordChange))
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// server.AddRoute("POST", "/change-password", changePasswordHandler)
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//
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// The 444 status code can be used by the client to prompt for re-authentication.
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func (auth *Authenticator[T, TX]) FreshReq(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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model, ok := getAuthorizedModel[T](r.Context())
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if !ok {
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page, err := auth.errorPage(http.StatusUnauthorized)
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if err != nil {
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auth.server.ThrowError(w, r, hws.HWSError{
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Error: err,
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Message: "Failed to get valid error page",
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StatusCode: http.StatusInternalServerError,
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RenderErrorPage: true,
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})
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}
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err = page.Render(r.Context(), w)
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if err != nil {
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auth.server.ThrowError(w, r, hws.HWSError{
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Error: err,
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Message: "Failed to render error page",
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StatusCode: http.StatusInternalServerError,
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RenderErrorPage: true,
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})
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}
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return
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}
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isFresh := time.Now().Before(time.Unix(model.fresh, 0))
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if !isFresh {
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w.WriteHeader(444)
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return
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}
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next.ServeHTTP(w, r)
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})
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}
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