Add special permission to the mixer

Mixer will make use of the high level api to control volume, but it has
to have special permission to be allowed to control volume without
opening the stream.

Change-Id: Iabf76e3df329de3706f24ef21b6df35b5f5aab60
Signed-off-by: Loïc Collignon <loic.collignon@iot.bzh>

1 files changed, 16 insertions, 9 deletions

diff --git a/ahl-binding/role.cpp b/ahl-binding/role.cpp
index b6a9c1f..2be3dc5 100644
--- a/ahl-binding/role.cpp
+++ b/ahl-binding/role.cpp
@@ -229,16 +229,23 @@ void role_t::close(afb_request* r, json_object* o)
 
 void role_t::volume(afb_request* r, json_object* o)
 {
-    if (!opened_)
+    if(!afb_request_has_permission(r, "urn:AGL:permission::public:4a-audio-mixer"))
     {
-        afb_request_fail(r, "You have to open the stream first!", nullptr);
-        return;
-    }
+        if (!opened_)
+        {
+            afb_request_fail(r, "You have to open the stream first!", nullptr);
+            return;
+        }
 
-    if(!afb_request_context_get(r))
+        if(!afb_request_context_get(r))
+        {
+            afb_request_fail(r, "Stream is opened by another client!", nullptr);
+            return;
+        }
+    }
+    else
     {
-        afb_request_fail(r, "Stream is opened by another client!", nullptr);
-        return;
+        AFB_DYNAPI_NOTICE(ahl_binding_t::instance().handle(), "Granted special audio-mixer permission to change volume");
     }
 
     json_object* value = json_object_object_get(o, "value");
@@ -249,7 +256,7 @@ void role_t::volume(afb_request* r, json_object* o)
     }
 
     json_object_get(value);
-    
+
     json_object* a = json_object_new_object();
     json_object_object_add(a, "volume", value);
 
@@ -262,7 +269,7 @@ void role_t::volume(afb_request* r, json_object* o)
         {
             AFB_DYNAPI_DEBUG(handle, "Got the following answer: %s", json_object_to_json_string(result));
             afb_request* r = (afb_request*)closure;
-            
+
             json_object_get(result);
             if (status) afb_request_fail(r, json_object_to_json_string(result), nullptr);
             else afb_request_success(r, result, nullptr);