connection: add get_jid_for_caps utility function

Signed-off-by: Jonny Lamb <jonny.lamb@collabora.co.uk>

2 files changed, 34 insertions, 0 deletions

diff --git a/gabble/connection.h b/gabble/connection.h
index 040b11b0..6da5d8a7 100644
--- a/gabble/connection.h
+++ b/gabble/connection.h
@@ -26,6 +26,8 @@
 #include <gabble/capabilities-set.h>
 #include <gabble/types.h>
 
+#include <wocky/wocky-xep-0115-capabilities.h>
+
 G_BEGIN_DECLS
 
 #define GABBLE_TYPE_CONNECTION (gabble_connection_get_type ())
@@ -60,6 +62,9 @@ WockySession *gabble_connection_get_session (
 
 gchar *gabble_connection_get_full_jid (GabbleConnection *conn);
 
+const gchar * gabble_connection_get_jid_for_caps (GabbleConnection *conn,
+    WockyXep0115Capabilities *caps);
+
 G_END_DECLS
 
 #endif
diff --git a/src/connection.c b/src/connection.c
index b9ec972a..70424d10 100644
--- a/src/connection.c
+++ b/src/connection.c
@@ -3828,3 +3828,32 @@ gabble_connection_add_sidecar_own_caps (GabbleConnection *self,
 
   return ver;
 }
+
+const gchar *
+gabble_connection_get_jid_for_caps (GabbleConnection *conn,
+    WockyXep0115Capabilities *caps)
+{
+  TpHandle handle;
+  TpBaseConnection *base;
+  TpHandleRepoIface *contact_handles;
+
+  g_return_val_if_fail (GABBLE_IS_CONNECTION (conn), NULL);
+  g_return_val_if_fail (GABBLE_IS_PRESENCE (caps), NULL);
+
+  base = (TpBaseConnection *) conn;
+
+  if ((GabblePresence *) caps == conn->self_presence)
+    {
+      handle = tp_base_connection_get_self_handle (base);
+    }
+  else
+    {
+      handle = gabble_presence_cache_get_handle (conn->presence_cache,
+          (GabblePresence *) caps);
+    }
+
+  contact_handles = tp_base_connection_get_handles (base,
+      TP_HANDLE_TYPE_CONTACT);
+
+  return tp_handle_inspect (contact_handles, handle);
+}