Merge pull request #796 from ericchiang/html-template

{web,server}: use html/template and reduce use of auth request ID

server/handlers.go

@@ -155,14 +155,22 @@ func (s *Server) handleAuthorization(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	authReq.Expiry = s.now().Add(time.Minute * 30)
+	// TODO(ericchiang): Create this authorization request later in the login flow
+	// so users don't hit "not found" database errors if they wait at the login
+	// screen too long.
+	//
+	// See: https://github.com/coreos/dex/issues/646
+	authReq.Expiry = s.now().Add(24 * time.Hour) // Totally arbitrary value.
 	if err := s.storage.CreateAuthRequest(authReq); err != nil {
 		s.logger.Errorf("Failed to create authorization request: %v", err)
 		s.renderError(w, http.StatusInternalServerError, "Failed to connect to the database.")
 		return
 	}
+
 	if len(s.connectors) == 1 {
 		for id := range s.connectors {
+			// TODO(ericchiang): Make this pass on r.URL.RawQuery and let something latter
+			// on create the auth request.
 			http.Redirect(w, r, s.absPath("/auth", id)+"?req="+authReq.ID, http.StatusFound)
 			return
 		}
@@ -174,12 +182,14 @@ func (s *Server) handleAuthorization(w http.ResponseWriter, r *http.Request) {
 		connectorInfos[i] = connectorInfo{
 			ID:   id,
 			Name: conn.DisplayName,
-			URL:  s.absPath("/auth", id),
+			// TODO(ericchiang): Make this pass on r.URL.RawQuery and let something latter
+			// on create the auth request.
+			URL: s.absPath("/auth", id) + "?req=" + authReq.ID,
 		}
 		i++
 	}
 
-	if err := s.templates.login(w, connectorInfos, authReq.ID); err != nil {
+	if err := s.templates.login(w, connectorInfos); err != nil {
 		s.logger.Errorf("Server template error: %v", err)
 	}
 }
@@ -198,7 +208,11 @@ func (s *Server) handleConnectorLogin(w http.ResponseWriter, r *http.Request) {
 	authReq, err := s.storage.GetAuthRequest(authReqID)
 	if err != nil {
 		s.logger.Errorf("Failed to get auth request: %v", err)
+		if err == storage.ErrNotFound {
+			s.renderError(w, http.StatusBadRequest, "Login session expired.")
+		} else {
 			s.renderError(w, http.StatusInternalServerError, "Database error.")
+		}
 		return
 	}
 	scopes := parseScopes(authReq.Scopes)
@@ -229,7 +243,7 @@ func (s *Server) handleConnectorLogin(w http.ResponseWriter, r *http.Request) {
 			}
 			http.Redirect(w, r, callbackURL, http.StatusFound)
 		case connector.PasswordConnector:
-			if err := s.templates.password(w, authReqID, r.URL.String(), "", false); err != nil {
+			if err := s.templates.password(w, r.URL.String(), "", false); err != nil {
 				s.logger.Errorf("Server template error: %v", err)
 			}
 		case connector.SAMLConnector:
@@ -277,7 +291,7 @@ func (s *Server) handleConnectorLogin(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 		if !ok {
-			if err := s.templates.password(w, authReqID, r.URL.String(), username, true); err != nil {
+			if err := s.templates.password(w, r.URL.String(), username, true); err != nil {
 				s.logger.Errorf("Server template error: %v", err)
 			}
 			return

server/templates.go

@@ -2,6 +2,7 @@ package server
 
 import (
 	"fmt"
+	"html/template"
 	"io"
 	"io/ioutil"
 	"net/http"
@@ -9,7 +10,6 @@ import (
 	"path/filepath"
 	"sort"
 	"strings"
-	"text/template"
 )
 
 const (
@@ -181,23 +181,20 @@ func (n byName) Len() int           { return len(n) }
 func (n byName) Less(i, j int) bool { return n[i].Name < n[j].Name }
 func (n byName) Swap(i, j int)      { n[i], n[j] = n[j], n[i] }
 
-func (t *templates) login(w http.ResponseWriter, connectors []connectorInfo, authReqID string) error {
+func (t *templates) login(w http.ResponseWriter, connectors []connectorInfo) error {
 	sort.Sort(byName(connectors))
-
 	data := struct {
 		Connectors []connectorInfo
-		AuthReqID  string
+	}{connectors}
-	}{connectors, authReqID}
 	return renderTemplate(w, t.loginTmpl, data)
 }
 
-func (t *templates) password(w http.ResponseWriter, authReqID, callback, lastUsername string, lastWasInvalid bool) error {
+func (t *templates) password(w http.ResponseWriter, postURL, lastUsername string, lastWasInvalid bool) error {
 	data := struct {
-		AuthReqID string
 		PostURL  string
 		Username string
 		Invalid  bool
-	}{authReqID, string(callback), lastUsername, lastWasInvalid}
+	}{postURL, lastUsername, lastWasInvalid}
 	return renderTemplate(w, t.passwordTmpl, data)
 }
 

web/templates/login.html

@@ -5,7 +5,7 @@
   <div>
     {{ range $c := .Connectors }}
       <div class="theme-form-row">
-        <a href="{{ $c.URL }}?req={{ $.AuthReqID }}" target="_self">
+        <a href="{{ $c.URL }}" target="_self">
           <button class="dex-btn theme-btn-provider">
             <span class="dex-btn-icon dex-btn-icon--{{ $c.ID }}"></span>
             <span class="dex-btn-text">Log in with {{ $c.Name }}</span>

web/templates/password.html

@@ -15,7 +15,6 @@
       </div>
 	  <input tabindex="2" required id="password" name="password" type="password" class="theme-form-input" placeholder="password" {{ if .Invalid }} autofocus {{ end }}/>
     </div>
-    <input type="hidden" name="req" value="{{ .AuthReqID }}"/>
 
     {{ if .Invalid }}
       <div class="dex-error-box">