[guest-user] disable generate file share link when view file

seahub/templates/view_file_base.html

@@ -56,8 +56,10 @@
             </div>
 
             {% if not repo.encrypted %}
+            {% if request.user.permissions.can_add_repo %}
             <button id="share" data-link="{{ file_shared_link }}" data-token="{{ fileshare.token }}">{% trans "Share" %}</button>
             {% endif %}
+            {% endif %}
 
             {% if user_perm == 'rw' %}
             <button id="history" data-url="{% url 'file_revisions' repo.id %}?p={{ path|urlencode }}">{% trans "History" %}</button>