Re: [PATCH BlueZ] client: Fix default_ctrl change when new adapter is found

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Hi, ERAMOTO

cache_ctrl is not advertising manager, cache_ctrl is temporary adapter
that store newest adapter info(see the below structure info). When you
use select, find_ctrl_by_address would filter your preferred adapter
by your address, then if it is default, return, otherwise, it would
update default_ctrl.

struct adapter {
GDBusProxy *proxy;
GDBusProxy *ad_proxy;
GList *devices;
};

when new adapter is found, the proxy handler would add adapter proxy,
profile proxy, advertising proxy sequentially, in this procedure,
cache_ctrl would update advertising manager.

thanks
best wishes
yunhan

On Fri, Sep 1, 2017 at 12:28 AM, ERAMOTO Masaya
<eramoto.masaya@xxxxxxxxxxxxxx> wrote:
> Hi Yunhan,
>
> Your patch have a regression, since select command can not update the current
> advertising manager (cache_ctrl) when it chooses another adapter.
>
> I think that it is better to use proxy->obj_path below:
>
> ---
>  client/main.c | 57 +++++++++++++++++++++++++++++++++++++++------------------
>  1 file changed, 39 insertions(+), 18 deletions(-)
>
> diff --git a/client/main.c b/client/main.c
> index 825647d..c6cb995 100644
> --- a/client/main.c
> +++ b/client/main.c
> @@ -525,17 +525,52 @@ static void device_added(GDBusProxy *proxy)
>         }
>  }
>
> +static struct adapter *find_ctrl(GList *source, const char *path)
> +{
> +       GList *list;
> +
> +       for (list = g_list_first(source); list; list = g_list_next(list)) {
> +               struct adapter *adapter = list->data;
> +
> +               if (!strcasecmp(g_dbus_proxy_get_path(adapter->proxy), path))
> +                       return adapter;
> +       }
> +
> +       return NULL;
> +}
> +
> +static struct adapter *adapter_new(GDBusProxy *proxy)
> +{
> +       struct adapter *adapter = g_malloc0(sizeof(struct adapter));
> +
> +       ctrl_list = g_list_append(ctrl_list, adapter);
> +
> +       if (!default_ctrl)
> +               default_ctrl = adapter;
> +
> +       return adapter;
> +}
> +
>  static void adapter_added(GDBusProxy *proxy)
>  {
> -       default_ctrl = g_malloc0(sizeof(struct adapter));
> -       default_ctrl->proxy = proxy;
> -       ctrl_list = g_list_append(ctrl_list, default_ctrl);
> +       struct adapter *ctrl;
> +       ctrl = find_ctrl(ctrl_list, g_dbus_proxy_get_path(proxy));
> +       if (!ctrl)
> +               ctrl = adapter_new(proxy);
> +
> +       ctrl->proxy = proxy;
> +
>         print_adapter(proxy, COLORED_NEW);
>  }
>
>  static void ad_manager_added(GDBusProxy *proxy)
>  {
> -       default_ctrl->ad_proxy = proxy;
> +       struct adapter *ctrl;
> +       ctrl = find_ctrl(ctrl_list, g_dbus_proxy_get_path(proxy));
> +       if (!ctrl)
> +               ctrl = adapter_new(proxy);
> +
> +       ctrl->ad_proxy = proxy;
>  }
>
>  static void proxy_added(GDBusProxy *proxy, void *user_data)
> @@ -661,20 +696,6 @@ static void proxy_removed(GDBusProxy *proxy, void *user_data)
>         }
>  }
>
> -static struct adapter *find_ctrl(GList *source, const char *path)
> -{
> -       GList *list;
> -
> -       for (list = g_list_first(source); list; list = g_list_next(list)) {
> -               struct adapter *adapter = list->data;
> -
> -               if (!strcasecmp(g_dbus_proxy_get_path(adapter->proxy), path))
> -                       return adapter;
> -       }
> -
> -       return NULL;
> -}
> -
>  static void property_changed(GDBusProxy *proxy, const char *name,
>                                         DBusMessageIter *iter, void *user_data)
>  {
> --
> 2.7.4
>
>
> Regards,
> Eramoto
>
> On 09/01/2017 12:56 PM, Yunhan Wang wrote:
>> When another adapter is found, the default adapter would be changed,
>> which is not expected. Default adapter can only be changed by select
>> command.
>> ---
>>  client/main.c | 18 ++++++++++++------
>>  1 file changed, 12 insertions(+), 6 deletions(-)
>>
>> diff --git a/client/main.c b/client/main.c
>> index 75696c2c1..29b3978e1 100644
>> --- a/client/main.c
>> +++ b/client/main.c
>> @@ -67,6 +67,7 @@ struct adapter {
>>  };
>>
>>  static struct adapter *default_ctrl;
>> +static struct adapter *cache_ctrl;
>>  static GDBusProxy *default_dev;
>>  static GDBusProxy *default_attr;
>>  static GList *ctrl_list;
>> @@ -151,7 +152,7 @@ static void disconnect_handler(DBusConnection *connection, void *user_data)
>>
>>       g_list_free_full(ctrl_list, proxy_leak);
>>       ctrl_list = NULL;
>> -
>> +     cache_ctrl = NULL;
>>       default_ctrl = NULL;
>>  }
>>
>> @@ -521,15 +522,21 @@ static void device_added(GDBusProxy *proxy)
>>
>>  static void adapter_added(GDBusProxy *proxy)
>>  {
>> -     default_ctrl = g_malloc0(sizeof(struct adapter));
>> -     default_ctrl->proxy = proxy;
>> -     ctrl_list = g_list_append(ctrl_list, default_ctrl);
>> +     struct adapter *adapter = g_malloc0(sizeof(struct adapter));
>> +
>> +     adapter->proxy = proxy;
>> +     cache_ctrl = adapter;
>> +     ctrl_list = g_list_append(ctrl_list, adapter);
>> +
>> +     if (!default_ctrl)
>> +             default_ctrl = adapter;
>> +
>>       print_adapter(proxy, COLORED_NEW);
>>  }
>>
>>  static void ad_manager_added(GDBusProxy *proxy)
>>  {
>> -     default_ctrl->ad_proxy = proxy;
>> +     cache_ctrl->ad_proxy = proxy;
>>  }
>>
>>  static void proxy_added(GDBusProxy *proxy, void *user_data)
>> @@ -602,7 +609,6 @@ static void adapter_removed(GDBusProxy *proxy)
>>                       print_adapter(proxy, COLORED_DEL);
>>
>>                       if (default_ctrl && default_ctrl->proxy == proxy) {
>> -                             default_ctrl = NULL;
>>                               set_default_device(NULL, NULL);
>>                       }
>>
>>
>
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