Split the path for accepting a sharing

When a user has received an email for a sharing, they can go to the
preview page. From here, there are two possibilities for accepting the
sharing: just creating a shortcut, or the full synchronization.

Before this commit, the user was first asked their Cozy URL, and on the
OAuth authorize page, they have a checkbox for the synchronize option.
Now, the choice is made on the preview page (Drive will add a
`shortcut=true` parameter in the query string on the
`GET /sharings/:id/discovery` endpoint if needed). And if it is just a
shortcut, we will skip the OAuth authorize page.

assets/locales/de.po

@@ -826,6 +826,9 @@ msgstr "Die Cozy URL ist nicht deine E-Mail-Adresse"
 msgid "Sharing Discovery Submit"
 msgstr "In mein Cozy synchronisieren"
 
+msgid "Sharing Discovery Shortcut Submit"
+msgstr "In mein Cozy synchronisieren"
+
 msgid "Sharing No Cozy"
 msgstr "Hast du noch kein Cozy?"
 

assets/locales/en.po

@@ -1139,6 +1139,9 @@ msgstr "The Cozy URL is not your email address."
 msgid "Sharing Discovery Submit"
 msgstr "Synchronize into my Cozy"
 
+msgid "Sharing Discovery Shortcut Submit"
+msgstr "Add to my Cozy"
+
 msgid "Sharing No Cozy"
 msgstr "Don't have a Cozy yet?"
 

assets/locales/es.po

@@ -840,6 +840,9 @@ msgstr "La URL de su Cozy no es la dirección de su correo electrónico"
 msgid "Sharing Discovery Submit"
 msgstr "Sincronizar en mi Cozy"
 
+msgid "Sharing Discovery Shortcut Submit"
+msgstr "Sincronizar en mi Cozy"
+
 msgid "Sharing No Cozy"
 msgstr "¿Todavía no tiene una Cozy?"
 

assets/locales/fr.po

@@ -1244,6 +1244,9 @@ msgstr "L'URL de votre Cozy n'est pas votre adresse email."
 msgid "Sharing Discovery Submit"
 msgstr "Synchroniser dans mon Cozy"
 
+msgid "Sharing Discovery Shortcut Submit"
+msgstr "Ajouter à mon Cozy"
+
 msgid "Sharing No Cozy"
 msgstr "Pas encore de Cozy ?"
 

assets/locales/ja.po

@@ -648,6 +648,9 @@ msgstr "Cozy の URL はメールアドレスではありません。"
 msgid "Sharing Discovery Submit"
 msgstr "送信"
 
+msgid "Sharing Discovery Shortcut Submit"
+msgstr "送信"
+
 msgid "Sharing No Cozy"
 msgstr "まだ Cozy をお持ちではありませんか?"
 

assets/locales/nl_NL.po

@@ -1024,6 +1024,9 @@ msgstr "De Cozy-url is niet je e-mailadres."
 msgid "Sharing Discovery Submit"
 msgstr "Synchroniseren naar mijn Cozy"
 
+msgid "Sharing Discovery Shortcut Submit"
+msgstr "Synchroniseren naar mijn Cozy"
+
 msgid "Sharing No Cozy"
 msgstr "Heb je nog geen Cozy?"
 

assets/templates/authorize_sharing.html

@@ -46,16 +46,6 @@ <h1 class="h4 h2-md mb-4 text-center">{{t "Authorize Sharing Title Add"}}</h1>
                 </p>
               </div>
 
-              {{if .HasShortcut}}
-              <input type="hidden" name="synchronize" value="true" />
-              {{else}}
-              <div class="form-check mb-2">
-                <input class="form-check-input" type="checkbox" id="synchronize" name="synchronize" checked />
-                <label class="form-check-label" for="synchronize">
-                  {{t "Authorize Sharing Synchronize label"}}
-                </label>
-              </div>
-              {{end}}
               <p class="{{if not .HasShortcut}}ps-4{{else}}text-center{{end}} caption text-muted mb-2">
                 {{t "Authorize Sharing Description start" .SharerName .TargetType}}
               </p>

assets/templates/sharing_discovery.html

@@ -15,6 +15,7 @@
     <form method="POST" action="/sharings/{{.SharingID}}/discovery" class="d-contents">
       <input type="hidden" name="state" value="{{.State}}" />
       <input type="hidden" name="sharecode" value="{{.ShareCode}}" />
+      <input type="hidden" name="shortcut" value="{{.Shortcut}}" />
       <main class="wrapper">
         <header class="wrapper-top">
           <a href="https://cozy.io/" class="btn p-2 d-sm-none">
@@ -55,7 +56,11 @@ <h1 class="h4 h2-md mb-2 text-center">{{t "Sharing Connect to Cozy"}}</h1>
             </a>
           </p>
           <button id="login-submit" class="btn btn-primary btn-md-lg w-100 mb-3" type="submit">
+            {{if .Shortcut}}
+            {{t "Sharing Discovery Shortcut Submit"}}
+            {{else}}
             {{t "Sharing Discovery Submit"}}
+            {{end}}
           </button>
         </footer>
       </main>

docs/sharing.md

@@ -184,14 +184,15 @@ just have to click OK).
 
 #### Query-String
 
-| Parameter | Description                        |
-| --------- | ---------------------------------- |
-| state     | a code that identify the recipient |
+| Parameter | Description                                                                               |
+| --------- | ----------------------------------------------------------------------------------------- |
+| state     | a code that identify the recipient                                                        |
+| shortcut  | true means that accepting the sharing will just create a shortcut on the recipient's Cozy |
 
 #### Example
 
 ```http
-GET /sharings/ce8835a061d0ef68947afe69a0046722/discovery?state=eiJ3iepoaihohz1Y HTTP/1.1
+GET /sharings/ce8835a061d0ef68947afe69a0046722/discovery?state=eiJ3iepoaihohz1Y&shortcut=true HTTP/1.1
 Host: alice.example.net
 ```
 
@@ -206,10 +207,11 @@ This route exists in two versions, the version is selected by the HTTP header
 
 #### Classical (`x-www-form-urlencoded`)
 
-| Parameter | Description                           |
-| --------- | ------------------------------------- |
-| state     | a code that identify the recipient    |
-| url       | the URL of the Cozy for the recipient |
+| Parameter | Description                                                                               |
+| --------- | ----------------------------------------------------------------------------------------- |
+| state     | a code that identify the recipient                                                        |
+| url       | the URL of the Cozy for the recipient                                                     |
+| shortcut  | true means that accepting the sharing will just create a shortcut on the recipient's Cozy |
 
 ##### Example
 
@@ -1207,8 +1209,8 @@ HTTP/1.1 204 No Content
 ### DELETE /sharings/:sharing-id/recipients/:index
 
 This route can be only be called on the cozy instance of the sharer to revoke
-only one recipient of the sharing. The parameter is the index of this recipient 
-in the `members` array of the sharing. 
+only one recipient of the sharing. The parameter is the index of this recipient
+in the `members` array of the sharing.
 The status for this member will be set to `revoked`, its cozy will be informed of the
 revokation, and the credentials for this cozy will be deleted.
 

model/sharing/member.go

@@ -452,14 +452,17 @@ func (s *Sharing) AddDelegatedContact(inst *instance.Instance, m Member) (string
 // DelegateDiscovery delegates the POST discovery when a recipient has invited
 // another person to a sharing, and this person accepts the sharing on the
 // recipient cozy. The calls is delegated to the owner cozy.
-func (s *Sharing) DelegateDiscovery(inst *instance.Instance, state, cozyURL string) (string, error) {
+func (s *Sharing) DelegateDiscovery(inst *instance.Instance, state, cozyURL, shortcut string) (string, error) {
 	u, err := url.Parse(s.Members[0].Instance)
 	if err != nil {
 		return "", err
 	}
 	v := url.Values{}
 	v.Add("state", state)
 	v.Add("url", cozyURL)
+	if shortcut != "" {
+		v.Add("shortcut", shortcut)
+	}
 	body := []byte(v.Encode())
 	if len(s.Credentials) == 0 {
 		return "", ErrInvalidSharing

model/sharing/oauth.go

@@ -250,7 +250,7 @@ func (s *Sharing) RegisterCozyURL(inst *instance.Instance, m *Member, cozyURL st
 
 // GenerateOAuthURL takes care of creating a correct OAuth request for
 // the given member of the sharing.
-func (m *Member) GenerateOAuthURL(s *Sharing) (string, error) {
+func (m *Member) GenerateOAuthURL(s *Sharing, shortcut string) (string, error) {
 	if !s.Owner || len(s.Members) != len(s.Credentials)+1 {
 		return "", ErrInvalidSharing
 	}
@@ -272,6 +272,9 @@ func (m *Member) GenerateOAuthURL(s *Sharing) (string, error) {
 		"sharing_id": {s.SID},
 		"state":      {creds.State},
 	}
+	if shortcut != "" {
+		q.Add("shortcut", shortcut)
+	}
 	u.RawQuery = q.Encode()
 
 	return u.String(), nil

web/auth/oauth.go

@@ -541,7 +541,16 @@ func (a *AuthorizeHTTPHandler) authorizeSharingForm(c echo.Context) error {
 		return renderError(c, http.StatusUnauthorized, "Error Invalid sharing")
 	}
 
-	hasShortcut := s.ShortcutID != ""
+	if strings.ToLower(c.QueryParam("shortcut")) == "true" {
+		if err := s.AddShortcut(instance, params.state); err != nil {
+			return err
+		}
+		u := instance.SubDomain(consts.DriveSlug)
+		u.RawQuery = "sharing=" + s.SID
+		u.Fragment = "/folder/" + consts.SharedWithMeDirID
+		return c.Redirect(http.StatusSeeOther, u.String())
+	}
+
 	var sharerDomain, targetType string
 	sharerURL, err := url.Parse(s.Members[0].Instance)
 	if err != nil {
@@ -551,7 +560,6 @@ func (a *AuthorizeHTTPHandler) authorizeSharingForm(c echo.Context) error {
 	}
 	if s.Rules[0].DocType == consts.BitwardenOrganizations {
 		targetType = instance.Translate("Notification Sharing Type Organization")
-		hasShortcut = true
 		s.Rules[0].Mime = "organization"
 		if len(s.Rules) == 2 && s.Rules[1].DocType == consts.BitwardenCiphers {
 			s.Rules = s.Rules[:1]
@@ -575,7 +583,6 @@ func (a *AuthorizeHTTPHandler) authorizeSharingForm(c echo.Context) error {
 		"State":        params.state,
 		"Sharing":      s,
 		"CSRF":         c.Get("csrf"),
-		"HasShortcut":  hasShortcut,
 		"TargetType":   targetType,
 	})
 }
@@ -604,16 +611,6 @@ func (a *AuthorizeHTTPHandler) authorizeSharing(c echo.Context) error {
 		return sharing.ErrInvalidSharing
 	}
 
-	if c.FormValue("synchronize") == "" {
-		if err = s.AddShortcut(instance, params.state); err != nil {
-			return err
-		}
-		u := instance.SubDomain(consts.DriveSlug)
-		u.RawQuery = "sharing=" + s.SID
-		u.Fragment = "/folder/" + consts.SharedWithMeDirID
-		return c.Redirect(http.StatusSeeOther, u.String())
-	}
-
 	if !s.Active {
 		if err = s.SendAnswer(instance, params.state); err != nil {
 			return err

web/sharings/sharings.go

@@ -602,7 +602,7 @@ func renderAlreadyAccepted(c echo.Context, inst *instance.Instance, cozyURL stri
 	})
 }
 
-func renderDiscoveryForm(c echo.Context, inst *instance.Instance, code int, sharingID, state, sharecode string, m *sharing.Member) error {
+func renderDiscoveryForm(c echo.Context, inst *instance.Instance, code int, sharingID, state, sharecode, shortcut string, m *sharing.Member) error {
 	publicName, _ := settings.PublicName(inst)
 	fqdn := strings.TrimPrefix(m.Instance, "https://")
 	slug, domain := "", consts.KnownFlatDomains[0]
@@ -628,6 +628,7 @@ func renderDiscoveryForm(c echo.Context, inst *instance.Instance, code int, shar
 		"SharingID":       sharingID,
 		"State":           state,
 		"ShareCode":       sharecode,
+		"Shortcut":        shortcut,
 		"URLError":        code == http.StatusBadRequest,
 		"NotEmailError":   code == http.StatusPreconditionFailed,
 	})
@@ -640,6 +641,7 @@ func GetDiscovery(c echo.Context) error {
 	sharingID := c.Param("sharing-id")
 	state := c.QueryParam("state")
 	sharecode := c.FormValue("sharecode")
+	shortcut := c.QueryParam("shortcut")
 
 	s, err := sharing.FindSharing(inst, sharingID)
 	if err != nil {
@@ -686,14 +688,14 @@ func GetDiscovery(c echo.Context) error {
 			err = s.RegisterCozyURL(inst, m, m.Instance)
 		}
 		if err == nil {
-			redirectURL, err := m.GenerateOAuthURL(s)
+			redirectURL, err := m.GenerateOAuthURL(s, shortcut)
 			if err == nil {
 				return c.Redirect(http.StatusFound, redirectURL)
 			}
 		}
 	}
 
-	return renderDiscoveryForm(c, inst, http.StatusOK, sharingID, state, sharecode, m)
+	return renderDiscoveryForm(c, inst, http.StatusOK, sharingID, state, sharecode, shortcut, m)
 }
 
 // PostDiscovery is called when the recipient has given its Cozy URL. Either an
@@ -705,6 +707,7 @@ func PostDiscovery(c echo.Context) error {
 	sharingID := c.Param("sharing-id")
 	state := c.FormValue("state")
 	sharecode := c.FormValue("sharecode")
+	shortcut := c.FormValue("shortcut")
 	cozyURL := c.FormValue("url")
 	if cozyURL == "" {
 		cozyURL = c.FormValue("slug")
@@ -742,7 +745,7 @@ func PostDiscovery(c echo.Context) error {
 			}
 		}
 		if strings.Contains(cozyURL, "@") {
-			return renderDiscoveryForm(c, inst, http.StatusPreconditionFailed, sharingID, state, sharecode, member)
+			return renderDiscoveryForm(c, inst, http.StatusPreconditionFailed, sharingID, state, sharecode, shortcut, member)
 		}
 		email = member.Email
 		if err = s.RegisterCozyURL(inst, member, cozyURL); err != nil {
@@ -752,21 +755,21 @@ func PostDiscovery(c echo.Context) error {
 			if errors.Is(err, sharing.ErrAlreadyAccepted) {
 				return renderAlreadyAccepted(c, inst, cozyURL)
 			}
-			return renderDiscoveryForm(c, inst, http.StatusBadRequest, sharingID, state, sharecode, member)
+			return renderDiscoveryForm(c, inst, http.StatusBadRequest, sharingID, state, sharecode, shortcut, member)
 		}
-		redirectURL, err = member.GenerateOAuthURL(s)
+		redirectURL, err = member.GenerateOAuthURL(s, shortcut)
 		if err != nil {
 			return wrapErrors(err)
 		}
 		sharing.PersistInstanceURL(inst, member.Email, member.Instance)
 	} else {
-		redirectURL, err = s.DelegateDiscovery(inst, state, cozyURL)
+		redirectURL, err = s.DelegateDiscovery(inst, state, cozyURL, shortcut)
 		if err != nil {
 			if errors.Is(err, sharing.ErrInvalidURL) {
 				if c.Request().Header.Get(echo.HeaderAccept) == echo.MIMEApplicationJSON {
 					return c.JSON(http.StatusBadRequest, echo.Map{"error": err.Error()})
 				}
-				return renderDiscoveryForm(c, inst, http.StatusBadRequest, sharingID, state, sharecode, &sharing.Member{})
+				return renderDiscoveryForm(c, inst, http.StatusBadRequest, sharingID, state, sharecode, shortcut, &sharing.Member{})
 			}
 			return wrapErrors(err)
 		}