Save logged in info and show on the homepage

cmd/eksterd/fetch.go

@@ -360,7 +360,7 @@ func (b *memoryBackend) ProcessContent(channel, fetchURL, contentType string, bo
 
 	err = b.updateChannelUnreadCount(conn, channel)
 	if err != nil {
-		log.Printf("error: while updating channel unread count for %s: %s\n", channel, err)
+		return err
 	}
 
 	return nil
@@ -373,8 +373,6 @@ func (b *memoryBackend) Fetch3(channel, fetchURL string) (*http.Response, error)
 }
 
 func (b *memoryBackend) channelAddItem(conn redis.Conn, channel string, item microsub.Item) error {
-	// send to redis
-	channelKey := fmt.Sprintf("channel:%s:posts", channel)
 	zchannelKey := fmt.Sprintf("zchannel:%s:posts", channel)
 
 	if item.Published == "" {
@@ -394,13 +392,10 @@ func (b *memoryBackend) channelAddItem(conn redis.Conn, channel string, item mic
 		Data:      data,
 	}
 
-	log.Printf("Adding item to channel %s => %s\n", channel, string(forRedis.Data))
-
 	itemKey := fmt.Sprintf("item:%s", item.ID)
 	_, err = redis.String(conn.Do("HMSET", redis.Args{}.Add(itemKey).AddFlat(&forRedis)...))
 	if err != nil {
-		log.Printf("error while writing item for redis: %v\n", err)
-		return err
+		return fmt.Errorf("error while writing item for redis: %v", err)
 	}
 
 	readChannelKey := fmt.Sprintf("channel:%s:read", channel)
@@ -413,27 +408,14 @@ func (b *memoryBackend) channelAddItem(conn redis.Conn, channel string, item mic
 		return nil
 	}
 
-	added, err := redis.Int64(conn.Do("SADD", channelKey, itemKey))
-	if err != nil {
-		log.Printf("error while adding item %s to channel %s for redis: %v\n", itemKey, channelKey, err)
-		return err
-	}
-
 	score, err := time.Parse(time.RFC3339, item.Published)
 	if err != nil {
-		log.Printf("error can't parse %s as time\n", item.Published)
-		return err
+		return fmt.Errorf("error can't parse %s as time", item.Published)
 	}
 
-	added, err = redis.Int64(conn.Do("ZADD", zchannelKey, score.Unix()*1.0, itemKey))
+	_, err = redis.Int64(conn.Do("ZADD", zchannelKey, score.Unix()*1.0, itemKey))
 	if err != nil {
-		log.Printf("error while zadding item %s to channel %s for redis: %v\n", itemKey, channelKey, err)
-		return err
-	}
-
-	if added > 0 {
-		log.Printf("Added item to channel %s\n", channel)
-		log.Println(item)
+		return fmt.Errorf("error while zadding item %s to channel %s for redis: %v", itemKey, zchannelKey, err)
 	}
 
 	return nil
@@ -444,8 +426,9 @@ func (b *memoryBackend) updateChannelUnreadCount(conn redis.Conn, channel string
 		zchannelKey := fmt.Sprintf("zchannel:%s:posts", channel)
 		unread, err := redis.Int(conn.Do("ZCARD", zchannelKey))
 		if err != nil {
-			return err
+			return fmt.Errorf("error: while updating channel unread count for %s: %s", channel, err)
 		}
+		defer b.save()
 		c.Unread = unread
 		b.Channels[channel] = c
 	}
@@ -465,7 +448,7 @@ func Fetch2(fetchURL string) (*http.Response, error) {
 	defer conn.Close()
 
 	if !strings.HasPrefix(fetchURL, "http") {
-		return nil, fmt.Errorf("error parsing %s as url", fetchURL)
+		return nil, fmt.Errorf("error parsing %s as url, has no http(s) prefix", fetchURL)
 	}
 
 	u, err := url.Parse(fetchURL)

cmd/eksterd/main.go

@@ -18,16 +18,20 @@
 package main
 
 import (
+	"encoding/json"
 	"flag"
 	"fmt"
 	"log"
 	"net/http"
+	"net/url"
 	"os"
 	"regexp"
 	"time"
 
 	"github.com/garyburd/redigo/redis"
+	"github.com/pstuifzand/ekster/pkg/indieauth"
 	"github.com/pstuifzand/ekster/pkg/microsub"
+	"github.com/pstuifzand/ekster/pkg/util"
 )
 
 var (
@@ -49,12 +53,194 @@ type mainHandler struct {
 	Backend *memoryBackend
 }
 
+type session struct {
+	AuthorizationEndpoint string `redis:"authorization_endpoint"`
+	Me                    string `redis:"me"`
+	RedirectURI           string `redis:"redirect_uri"`
+	State                 string `redis:"state"`
+	ClientID              string `redis:"client_id"`
+	LoggedIn              bool   `redis:"logged_in"`
+}
+
+type authResponse struct {
+	Me string `json:"me"`
+}
+
 func (h *mainHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	if r.Method == http.MethodGet {
-		fmt.Fprintln(w, "<h1>Ekster - Microsub server</h1>")
-		fmt.Fprintln(w, `<p><a href="/settings">Settings</a></p>`)
+	conn := pool.Get()
+	defer conn.Close()
+
+	err := r.ParseForm()
+
+	if err != nil {
+		log.Println(err)
+		http.Error(w, fmt.Sprintf("Bad Request: %s", err.Error()), 400)
 		return
 	}
+	if r.Method == http.MethodGet {
+		if r.URL.Path == "/" {
+			c, err := r.Cookie("session")
+			sessionVar := util.RandStringBytes(16)
+
+			if err == http.ErrNoCookie {
+				newCookie := &http.Cookie{
+					Name:    "session",
+					Value:   sessionVar,
+					Expires: time.Now().Add(24 * time.Hour),
+				}
+
+				http.SetCookie(w, newCookie)
+			} else {
+				sessionVar = c.Value
+			}
+
+			var sess session
+			sessionKey := "session:" + sessionVar
+			data, err := redis.Values(conn.Do("HGETALL", sessionKey))
+			if err != nil {
+				fmt.Fprintf(w, "ERROR: %q\n", err)
+				return
+			}
+			err = redis.ScanStruct(data, &sess)
+			if err != nil {
+				fmt.Fprintf(w, "ERROR: %q\n", err)
+				return
+			}
+
+			fmt.Fprintln(w, "<h1>Ekster - Microsub server</h1>")
+			fmt.Fprintln(w, `<p><a href="/settings">Settings</a></p>`)
+
+			if sess.LoggedIn {
+				fmt.Fprintf(w, "SUCCESS Me = %s", sess.Me)
+			} else {
+				fmt.Fprintln(w, `
+<h2>Sign in to Ekster</h2>
+<form action="/auth" method="post">
+	<input type="text" name="url" placeholder="https://example.com/">
+	<button type="submit">Login</button>
+</form>
+`)
+			}
+
+			return
+		} else if r.URL.Path == "/auth/callback" {
+			c, err := r.Cookie("session")
+			if err == http.ErrNoCookie {
+				http.Redirect(w, r, "/", 302)
+				return
+			}
+			sessionVar := c.Value
+			var sess session
+			sessionKey := "session:" + sessionVar
+			data, err := redis.Values(conn.Do("HGETALL", sessionKey))
+			if err != nil {
+				fmt.Fprintf(w, "ERROR: %q\n", err)
+				return
+			}
+			err = redis.ScanStruct(data, &sess)
+			if err != nil {
+				fmt.Fprintf(w, "ERROR: %q\n", err)
+				return
+			}
+
+			state := r.Form.Get("state")
+			if state != sess.State {
+				fmt.Fprintf(w, "ERROR: Mismatched state\n")
+				return
+			}
+			code := r.Form.Get("code")
+
+			reqData := url.Values{}
+			reqData.Set("code", code)
+			reqData.Set("client_id", sess.ClientID)
+			reqData.Set("redirect_uri", sess.RedirectURI)
+			resp, err := http.PostForm(sess.AuthorizationEndpoint, reqData)
+			if err != nil {
+				fmt.Fprintf(w, "ERROR: %q\n", err)
+				return
+			}
+			defer resp.Body.Close()
+
+			if resp.StatusCode == 200 {
+				dec := json.NewDecoder(resp.Body)
+				var authResponse authResponse
+				err = dec.Decode(&authResponse)
+				if err != nil {
+					fmt.Fprintf(w, "ERROR: %q\n", err)
+					return
+				}
+				log.Println(authResponse)
+
+				sess.Me = authResponse.Me
+				sess.LoggedIn = true
+				conn.Do("HMSET", redis.Args{}.Add(sessionKey).AddFlat(sess)...)
+				http.Redirect(w, r, "/", 302)
+				return
+			} else {
+				fmt.Fprintf(w, "ERROR: HTTP response code from authorization_endpoint (%s) %d \n", sess.AuthorizationEndpoint, resp.StatusCode)
+				return
+			}
+		}
+	} else if r.Method == http.MethodPost {
+		if r.URL.Path == "/auth" {
+			c, err := r.Cookie("session")
+			if err == http.ErrNoCookie {
+				http.Redirect(w, r, "/", 302)
+				return
+			}
+
+			sessionVar := c.Value
+
+			// redirect to endpoint
+			me := r.Form.Get("url")
+			log.Println(me)
+			meURL, err := url.Parse(me)
+			if err != nil {
+				http.Error(w, fmt.Sprintf("Bad Request: %s, %s", err.Error(), me), 400)
+				return
+			}
+			endpoints, err := indieauth.GetEndpoints(meURL)
+			if err != nil {
+				http.Error(w, fmt.Sprintf("Bad Request: %s %s", err.Error(), me), 400)
+				return
+			}
+			log.Println(endpoints)
+
+			authURL, err := url.Parse(endpoints.AuthorizationEndpoint)
+			if err != nil {
+				http.Error(w, fmt.Sprintf("Bad Request: %s %s", err.Error(), me), 400)
+				return
+			}
+			log.Println(authURL)
+
+			state := util.RandStringBytes(16)
+			clientID := "https://p83.nl/microsub-client"
+			redirectURI := fmt.Sprintf("%s/auth/callback", os.Getenv("EKSTER_BASEURL"))
+
+			sess := session{
+				AuthorizationEndpoint: endpoints.AuthorizationEndpoint,
+				Me:          meURL.String(),
+				State:       state,
+				RedirectURI: redirectURI,
+				ClientID:    clientID,
+				LoggedIn:    false,
+			}
+			conn.Do("HMSET", redis.Args{}.Add("session:"+sessionVar).AddFlat(&sess)...)
+
+			q := authURL.Query()
+			q.Add("response_type", "id")
+			q.Add("me", meURL.String())
+			q.Add("client_id", clientID)
+			q.Add("redirect_uri", redirectURI)
+			q.Add("state", state)
+			authURL.RawQuery = q.Encode()
+
+			http.Redirect(w, r, authURL.String(), 302)
+			return
+		}
+		return
+	}
+
 	http.NotFound(w, r)
 }
 
@@ -120,6 +306,8 @@ func main() {
 	})
 
 	backend.(*memoryBackend).run()
+	hubBackend.run()
+
 	log.Printf("Listening on port %d\n", port)
 	log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", port), nil))
 }

cmd/eksterd/micropub.go

@@ -24,10 +24,6 @@ func (h *micropubHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	defer conn.Close()
 
 	r.ParseForm()
-	log.Printf("%s %s\n", r.Method, r.URL)
-	log.Println(r.URL.Query())
-	log.Println(r.PostForm)
-	log.Println(r.Header)
 
 	if r.Method == http.MethodPost {
 		sourceID := r.URL.Query().Get("source_id")
@@ -74,7 +70,10 @@ func (h *micropubHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 			id, _ := redis.Int(conn.Do("INCR", "source:"+sourceID+"next_id"))
 			item.ID = fmt.Sprintf("%x", sha1.Sum([]byte(fmt.Sprintf("source:%s:%d", sourceID, id))))
 			h.Backend.channelAddItem(conn, channel, item)
-			h.Backend.updateChannelUnreadCount(conn, channel)
+			err = h.Backend.updateChannelUnreadCount(conn, channel)
+			if err != nil {
+				log.Printf("error: while updating channel unread count for %s: %s\n", channel, err)
+			}
 		}
 
 		w.Header().Set("Content-Type", "application/json")

pkg/indieauth/auth.go

@@ -115,7 +115,7 @@ func Authorize(me *url.URL, endpoints Endpoints, clientID, scope string) (TokenR
 		if state != responseState {
 			log.Println("Wrong state response")
 		}
-		fmt.Fprintf(w, `<div style="width:100%%;height:100%%;display: flex; align-items: center; justify-content: center;">You can close this window, proceed on the command line</div>`)
+		fmt.Fprintln(w, `<div style="width:100%;height:100%;display: flex; align-items: center; justify-content: center;">You can close this window, proceed on the command line</div>`)
 		close(shutdown)
 	}