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From:   "Stotland, Inga" <inga.stotland@intel.com>
To:     "linux-bluetooth@vger.kernel.org" <linux-bluetooth@vger.kernel.org>,
        "Gix, Brian" <brian.gix@intel.com>
CC:     "michal.lowas-rzechonek@silvair.com" 
        <michal.lowas-rzechonek@silvair.com>
Subject: Re: [PATCH BlueZ v3 3/3] mesh: Fix Key Ring permissions for local
 nodes
Thread-Topic: [PATCH BlueZ v3 3/3] mesh: Fix Key Ring permissions for local
 nodes
Thread-Index: AQHVdJZoFMOUUqc+tEyrdZ8iI4HYlac+4ZOA
Date:   Thu, 26 Sep 2019 20:41:00 +0000
Message-ID: <3c389010afa470574d5a90a4dc31a2bad9c26e84.camel@intel.com>
References: <20190926181444.4916-1-brian.gix@intel.com>
         <20190926181444.4916-4-brian.gix@intel.com>
In-Reply-To: <20190926181444.4916-4-brian.gix@intel.com>
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Hi Brian,

On Thu, 2019-09-26 at 11:14 -0700, Brian Gix wrote:
> We do *not* automatically create populated key rings for imported or
> joined nodes,=20

Why not for Import()? Since both the DevKey and NetKey are in the
possesion of the node...

> but we also do not *forbid* any node from adding a key
> in it's possesion to the local key ring.
> ---
>  mesh/manager.c |  5 -----
>  mesh/node.c    | 15 ---------------
>  2 files changed, 20 deletions(-)
>=20
> diff --git a/mesh/manager.c b/mesh/manager.c
> index 501ec10fe..633597659 100644
> --- a/mesh/manager.c
> +++ b/mesh/manager.c
> @@ -282,7 +282,6 @@ static struct l_dbus_message
> *import_node_call(struct l_dbus *dbus,
>  						void *user_data)
>  {
>  	struct mesh_node *node =3D user_data;
> -	struct mesh_net *net =3D node_get_net(node);
>  	struct l_dbus_message_iter iter_key;
>  	uint16_t primary;
>  	uint8_t num_ele;
> @@ -298,10 +297,6 @@ static struct l_dbus_message
> *import_node_call(struct l_dbus *dbus,
>  		return dbus_error(msg, MESH_ERROR_INVALID_ARGS,
>  							"Bad device
> key");
> =20
> -	if (mesh_net_is_local_address(net, primary, num_ele))
> -		return dbus_error(msg, MESH_ERROR_INVALID_ARGS,
> -					"Cannot overwrite local device
> key");
> -
>  	if (!keyring_put_remote_dev_key(node, primary, num_ele, key))
>  		return dbus_error(msg, MESH_ERROR_FAILED, NULL);
> =20
> diff --git a/mesh/node.c b/mesh/node.c
> index 833377e99..af45a6130 100644
> --- a/mesh/node.c
> +++ b/mesh/node.c
> @@ -1681,7 +1681,6 @@ static void get_managed_objects_cb(struct
> l_dbus_message *msg, void *user_data)
> =20
>  	} else if (req->type =3D=3D REQUEST_TYPE_IMPORT) {
>  		struct node_import *import =3D req->import;
> -		struct keyring_net_key net_key;
> =20
>  		if (!create_node_config(node, node->uuid))
>  			goto fail;
> @@ -1692,23 +1691,9 @@ static void get_managed_objects_cb(struct
> l_dbus_message *msg, void *user_data)
>  					import->net_idx, import-
> >net_key))
>  			goto fail;
> =20
> -		memcpy(net_key.old_key, import->net_key, 16);
> -		net_key.net_idx =3D import->net_idx;
> -		if (import->flags.kr)
> -			net_key.phase =3D KEY_REFRESH_PHASE_TWO;
> -		else
> -			net_key.phase =3D KEY_REFRESH_PHASE_NONE;
> -
>  		/* Initialize directory for storing keyring info */
>  		init_storage_dir(node);
> =20
> -		if (!keyring_put_remote_dev_key(node, import->unicast,
> -						num_ele, import-
> >dev_key))
> -			goto fail;
> -
> -		if (!keyring_put_net_key(node, import->net_idx,
> &net_key))
> -			goto fail;
> -
>  	} else {
>  		/* Callback for create node request */
>  		struct keyring_net_key net_key;


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