On Tue, 2017-12-05 at 16:25 +0100, Andrew Zaborowski wrote:
> Add the NMIwdManager singleton to be responsible for matching
> NMDeviceIwd objects created from platform devices, to IWD Device dbus
> objects when they appear/disappear.
> ---
>  Makefile.am                       |   4 +-
>  src/devices/wifi/nm-device-iwd.c  |  41 +++++
>  src/devices/wifi/nm-device-iwd.h  |   2 +
>  src/devices/wifi/nm-iwd-manager.c | 348
> ++++++++++++++++++++++++++++++++++++++
>  src/devices/wifi/nm-iwd-manager.h |  53 ++++++
>  5 files changed, 447 insertions(+), 1 deletion(-)
>  create mode 100644 src/devices/wifi/nm-iwd-manager.c
>  create mode 100644 src/devices/wifi/nm-iwd-manager.h
> 
> diff --git a/Makefile.am b/Makefile.am
> index 7bde983a6..e836f9e12 100644
> --- a/Makefile.am
> +++ b/Makefile.am
> @@ -2644,7 +2644,9 @@
> src_devices_wifi_libnm_device_plugin_wifi_la_SOURCES = \
>  if WITH_IWD
>  src_devices_wifi_libnm_device_plugin_wifi_la_SOURCES += \
>       src/devices/wifi/nm-device-iwd.c \
> -     src/devices/wifi/nm-device-iwd.h
> +     src/devices/wifi/nm-device-iwd.h \
> +     src/devices/wifi/nm-iwd-manager.c \
> +     src/devices/wifi/nm-iwd-manager.h
>  endif
>  
>  src_devices_wifi_libnm_device_plugin_wifi_la_CPPFLAGS = \
> diff --git a/src/devices/wifi/nm-device-iwd.c b/src/devices/wifi/nm-
> device-iwd.c
> index 9a06604c2..e2be47bcb 100644
> --- a/src/devices/wifi/nm-device-iwd.c
> +++ b/src/devices/wifi/nm-device-iwd.c
> @@ -1725,6 +1725,47 @@ properties_changed (GDBusProxy *proxy,
> GVariant *changed_properties,
>       g_variant_iter_free (iter);
>  }
>  
> +void
> +nm_device_iwd_set_dbus_object (NMDeviceIwd *self, GDBusObject
> *object)
> +{
> +     NMDeviceIwdPrivate *priv = NM_DEVICE_IWD_GET_PRIVATE (self);
> +     GDBusInterface *interface;
> +
> +     if (!nm_g_object_ref_set ((GObject **) &priv->dbus_obj,
> (GObject *) object))
> +             return;
> +
> +     if (priv->dbus_proxy) {
> +             g_signal_handlers_disconnect_by_func (priv-
> >dbus_proxy,
> +                                                   properties_cha
> nged, self);
> +
> +             g_clear_object (&priv->dbus_proxy);
> +     }
> +
> +     if (priv->enabled)
> +             nm_device_queue_recheck_available (NM_DEVICE (self),
> +                                                NM_DEVICE_STATE_R
> EASON_SUPPLICANT_AVAILABLE,
> +                                                NM_DEVICE_STATE_R
> EASON_SUPPLICANT_FAILED);
> +
> +     if (!object) {
> +             priv->can_scan = FALSE;
> +
> +             cleanup_association_attempt (self, FALSE);
> +             return;
> +     }
> +
> +     interface = g_dbus_object_get_interface (object,
> IWD_DEVICE_INTERFACE);
> +     priv->dbus_proxy = G_DBUS_PROXY (interface);
> +
> +     g_signal_connect (priv->dbus_proxy, "g-properties-changed",
> +                       G_CALLBACK (properties_changed), self);
> +
> +     /* Call Disconnect to make sure IWD's autoconnect is
> disabled.  We've
> +      * most likely just brought the device UP so it would be in
> +      * autoconnect by default.
> +      */
> +     send_disconnect (self);
> +}
> +
>  /*******************************************************************
> **********/
>  
>  static void
> diff --git a/src/devices/wifi/nm-device-iwd.h b/src/devices/wifi/nm-
> device-iwd.h
> index 0cfdcd6ee..34cdad0d0 100644
> --- a/src/devices/wifi/nm-device-iwd.h
> +++ b/src/devices/wifi/nm-device-iwd.h
> @@ -53,4 +53,6 @@ GType nm_device_iwd_get_type (void);
>  
>  NMDevice *nm_device_iwd_new (const char *iface,
> NMDeviceWifiCapabilities capabilities);
>  
> +void nm_device_iwd_set_dbus_object (NMDeviceIwd *device, GDBusObject
> *object);
> +
>  #endif /* __NETWORKMANAGER_DEVICE_IWD_H__ */
> diff --git a/src/devices/wifi/nm-iwd-manager.c b/src/devices/wifi/nm-
> iwd-manager.c
> new file mode 100644
> index 000000000..7561b17b3
> --- /dev/null
> +++ b/src/devices/wifi/nm-iwd-manager.c
> @@ -0,0 +1,348 @@
> +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4
> -*- */
> +/* NetworkManager -- Network link manager
> + *
> + * This program is free software; you can redistribute it and/or
> modify
> + * it under the terms of the GNU General Public License as published
> by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> along
> + * with this program; if not, write to the Free Software Foundation,
> Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * Copyright (C) 2017 Intel Corporation
> + */
> +
> +#include "nm-default.h"
> +
> +#include "nm-iwd-manager.h"
> +
> +#include <string.h>
> +#include <net/if.h>
> +
> +#include "nm-logging.h"
> +#include "nm-manager.h"
> +#include "nm-device-iwd.h"
> +
> +/*******************************************************************
> **********/
> +
> +typedef struct {
> +     GCancellable *cancellable;
> +     gboolean running;
> +     GDBusObjectManager *object_manager;
> +} NMIwdManagerPrivate;
> +
> +struct _NMIWDManager {
> +     GObject parent;
> +     NMIwdManagerPrivate _priv;
> +};
> +
> +struct _NMIWDManagerClass {
> +     GObjectClass parent;
> +};
> +
> +G_DEFINE_TYPE (NMIwdManager, nm_iwd_manager, G_TYPE_OBJECT)
> +
> +#define NM_IWD_MANAGER_GET_PRIVATE(self) _NM_GET_PRIVATE (self,
> NMIwdManager, NM_IS_IWD_MANAGER)
> +
> +/*******************************************************************
> **********/
> +
> +#define _NMLOG_PREFIX_NAME                "iwd-manager"
> +#define _NMLOG_DOMAIN                     LOGD_WIFI
> +
> +#define _NMLOG(level, ...) \
> +     G_STMT_START { \
> +             if (nm_logging_enabled (level, _NMLOG_DOMAIN)) { \
> +                     char __prefix[32]; \
> +                     \
> +                     if (self) \
> +                             g_snprintf (__prefix, sizeof
> (__prefix), "%s[%p]", ""_NMLOG_PREFIX_NAME"", (self)); \
> +                     else \
> +                             g_strlcpy (__prefix,
> _NMLOG_PREFIX_NAME, sizeof (__prefix)); \
> +                     _nm_log ((level), (_NMLOG_DOMAIN), 0, NULL,
> NULL, \
> +                               "%s: "
> _NM_UTILS_MACRO_FIRST(__VA_ARGS__), \
> +                               __prefix
> _NM_UTILS_MACRO_REST(__VA_ARGS__)); \
> +             } \
> +     } G_STMT_END
> +
> +/*******************************************************************
> **********/
> +
> +static void
> +set_device_dbus_object (NMIwdManager *self, GDBusInterface
> *interface,
> +                        GDBusObject *object)
> +{
> +     NMIwdManagerPrivate *priv = NM_IWD_MANAGER_GET_PRIVATE
> (self);
> +     GDBusProxy *proxy;
> +     GVariant *value;
> +     const char *ifname;
> +     gint ifindex;
> +     NMDevice *device;
> +     NMManager *manager;
> +
> +     if (!priv->running)
> +             return;
> +
> +     g_return_if_fail (G_IS_DBUS_PROXY (interface));
> +
> +     proxy = G_DBUS_PROXY (interface);
> +
> +     if (strcmp (g_dbus_proxy_get_interface_name (proxy),
> +                 IWD_DEVICE_INTERFACE))
> +             return;
> +
> +     value = g_dbus_proxy_get_cached_property (proxy, "Name");
> +     if (!value) {
> +             _LOGE ("Name not cached for Device at %s",
> +                    g_dbus_proxy_get_object_path (proxy));
> +             return;
> +     }
> +
> +     ifname = g_variant_get_string (value, NULL);
> +     ifindex = if_nametoindex (ifname);
> +     g_variant_unref (value);
> +
> +     if (!ifindex) {
> +             _LOGE ("if_nametoindex failed for Name %s for Device
> at %s: %i",
> +                    ifname, g_dbus_proxy_get_object_path (proxy),
> errno);
> +             return;
> +     }
> +
> +     manager = nm_manager_get ();
> +
> +     device = nm_manager_get_device_by_ifindex (manager,
> ifindex);
> +     if (!NM_IS_DEVICE_IWD (device)) {
> +             _LOGE ("IWD device named %s is not a Wifi device",
> ifname);
> +             return;
> +     }
> +
> +     nm_device_iwd_set_dbus_object (NM_DEVICE_IWD (device),
> object);
> +}
> +
> +static void
> +interface_added (GDBusObjectManager *object_manager, GDBusObject
> *object,
> +                 GDBusInterface *interface, gpointer user_data)
> +{
> +     NMIwdManager *self = user_data;
> +
> +     set_device_dbus_object (self, interface, object);
> +}
> +
> +static void
> +interface_removed (GDBusObjectManager *object_manager, GDBusObject
> *object,
> +                   GDBusInterface *interface, gpointer user_data)
> +{
> +     NMIwdManager *self = user_data;
> +
> +     /*
> +      * TODO: we may need to save the GDBusInterface or
> GDBusObject
> +      * pointer in the hash table because we may be no longer
> able to
> +      * access the Name property or map the name to ifindex with
> +      * if_nametoindex at this point.
> +      */
> +
> +     set_device_dbus_object (self, interface, NULL);
> +}
> +
> +static gboolean
> +_om_has_name_owner (GDBusObjectManager *object_manager)
> +{
> +     gs_free char *name_owner = NULL;
> +
> +     nm_assert (G_IS_DBUS_OBJECT_MANAGER_CLIENT
> (object_manager));
> +
> +     name_owner = g_dbus_object_manager_client_get_name_owner
> (G_DBUS_OBJECT_MANAGER_CLIENT (object_manager));
> +     return !!name_owner;
> +}
> +
> +static void
> +object_added (NMIwdManager *self, GDBusObject *object)
> +{
> +     GList *interfaces, *iter;
> +
> +     interfaces = g_dbus_object_get_interfaces (object);
> +     for (iter = interfaces; iter; iter = iter->next) {
> +             GDBusInterface *interface = G_DBUS_INTERFACE (iter-
> >data);
> +
> +             set_device_dbus_object (self, interface, object);
> +     }
> +
> +     g_list_free_full (interfaces, g_object_unref);
> +}
> +
> +static void
> +name_owner_changed (GObject *object, GParamSpec *pspec, gpointer
> user_data)
> +{
> +     NMIwdManager *self = user_data;
> +     NMIwdManagerPrivate *priv = NM_IWD_MANAGER_GET_PRIVATE
> (self);
> +     GDBusObjectManager *object_manager = G_DBUS_OBJECT_MANAGER
> (object);
> +
> +     nm_assert (object_manager == priv->object_manager);
> +
> +     if (_om_has_name_owner (object_manager)) {
> +             GList *objects, *iter;
> +
> +             priv->running = true;
> +
> +             objects = g_dbus_object_manager_get_objects
> (object_manager);
> +             for (iter = objects; iter; iter = iter->next)
> +                     object_added (self, G_DBUS_OBJECT (iter-
> >data));
> +
> +             g_list_free_full (objects, g_object_unref);
> +     } else {
> +             NMManager *manager = nm_manager_get ();
> +             const GSList *devices, *iter;
> +
> +             priv->running = false;
> +
> +             devices = nm_manager_get_devices (manager);
> +             for (iter = devices; iter; iter = iter->next) {
> +                     NMDevice *device = NM_DEVICE (iter->data);
> +
> +                     if (!NM_IS_DEVICE_IWD (device))
> +                             continue;
> +
> +                     nm_device_iwd_set_dbus_object (NM_DEVICE_IWD
> (device),
> +                                                     NULL);
> +             }
> +     }
> +}
> +
> +static void
> +device_added (NMDevice *device, gpointer user_data)
> +{
> +     NMIwdManager *self = user_data;
> +     NMIwdManagerPrivate *priv = NM_IWD_MANAGER_GET_PRIVATE
> (self);
> +     GList *objects, *iter;
> +
> +     if (!NM_IS_DEVICE_IWD (device))
> +             return;
> +
> +     if (!priv->running)
> +             return;
> +
> +     objects = g_dbus_object_manager_get_objects (priv-
> >object_manager);
> +     for (iter = objects; iter; iter = iter->next) {
> +             GDBusObject *object = G_DBUS_OBJECT (iter->data);
> +             GDBusInterface *interface;
> +             GDBusProxy *proxy;
> +             GVariant *value;
> +             const char *obj_ifname;
> +
> +             interface = g_dbus_object_get_interface (object,
> +                                                      IWD_DEVICE_
> INTERFACE);
> +             if (!interface)
> +                     continue;
> +
> +             proxy = G_DBUS_PROXY (interface);
> +             value = g_dbus_proxy_get_cached_property (proxy,
> "Name");
> +             if (!value) {
> +                     g_object_unref (interface);
> +                     continue;
> +             }
> +
> +             obj_ifname = g_variant_get_string (value, NULL);
> +             g_variant_unref (value);
> +             g_object_unref (interface);
> +
> +             if (strcmp (nm_device_get_iface (device),
> obj_ifname))
> +                     continue;
> +
> +             nm_device_iwd_set_dbus_object (NM_DEVICE_IWD
> (device), object);
> +             break;
> +     }
> +
> +     g_list_free_full (objects, g_object_unref);
> +}
> +
> +static void
> +got_object_manager (GObject *object, GAsyncResult *result, gpointer
> user_data)
> +{
> +     NMIwdManager *self = user_data;
> +     NMIwdManagerPrivate *priv = NM_IWD_MANAGER_GET_PRIVATE
> (self);
> +     GError *error = NULL;
> +     GDBusObjectManager *object_manager;
> +     GDBusConnection *connection;
> +     NMManager *manager = nm_manager_get ();
> +
> +     g_clear_object (&priv->cancellable);
> +
> +     object_manager =
> g_dbus_object_manager_client_new_for_bus_finish (result, &error);
> +     if (object_manager == NULL) {
> +             _LOGE ("failed to acquire IWD Object Manager: Wi-Fi
> will not be available (%s)",
> +                    NM_G_ERROR_MSG (error));
> +             g_clear_error (&error);
> +             return;
> +     }
> +
> +     priv->object_manager = object_manager;
> +
> +     g_signal_connect (priv->object_manager, "interface-added",
> +                       G_CALLBACK (interface_added), self);
> +     g_signal_connect (priv->object_manager, "interface-removed",
> +                       G_CALLBACK (interface_removed), self);
> +     g_signal_connect (priv->object_manager, "notify::name-
> owner",
> +                       G_CALLBACK (name_owner_changed), self);
> +
> +     nm_assert (G_IS_DBUS_OBJECT_MANAGER_CLIENT
> (object_manager));
> +
> +     connection = g_dbus_object_manager_client_get_connection
> (G_DBUS_OBJECT_MANAGER_CLIENT (object_manager));
> +
> +     name_owner_changed (G_OBJECT (object_manager), NULL, self);
> +
> +     g_signal_connect (manager, "device-added",
> +                       G_CALLBACK (device_added), self);
> +}
> +
> +static void
> +prepare_object_manager (NMIwdManager *self)
> +{
> +     NMIwdManagerPrivate *priv = NM_IWD_MANAGER_GET_PRIVATE
> (self);
> +
> +     g_dbus_object_manager_client_new_for_bus (IWD_BUS_TYPE,
> +                                               G_DBUS_OBJECT_MANA
> GER_CLIENT_FLAGS_DO_NOT_AUTO_START,
> +                                               IWD_SERVICE, "/",
> +                                               NULL, NULL, NULL,
> +                                               priv->cancellable,
> +                                               got_object_manager
> , self);
> +}
> +
> +/*******************************************************************
> **********/
> +
> +NM_DEFINE_SINGLETON_GETTER (NMIwdManager, nm_iwd_manager_get,
> +                            NM_TYPE_IWD_MANAGER);
> +
> +static void
> +nm_iwd_manager_init (NMIwdManager *self)
> +{
> +     NMIwdManagerPrivate *priv = NM_IWD_MANAGER_GET_PRIVATE
> (self);
> +
> +     priv->cancellable = g_cancellable_new ();
> +     prepare_object_manager (self);
> +}
> +
> +static void
> +dispose (GObject *object)
> +{
> +     NMIwdManager *self = (NMIwdManager *) object;
> +     NMIwdManagerPrivate *priv = NM_IWD_MANAGER_GET_PRIVATE
> (self);
> +
> +     if (priv->object_manager)
> +             g_clear_object (&priv->object_manager);
> +
> +     nm_clear_g_cancellable (&priv->cancellable);
> +
> +     G_OBJECT_CLASS (nm_iwd_manager_parent_class)->dispose
> (object);
> +}
> +
> +static void
> +nm_iwd_manager_class_init (NMIWDManagerClass *klass)
> +{
> +     GObjectClass *object_class = G_OBJECT_CLASS (klass);
> +
> +     object_class->dispose = dispose;
> +}
> diff --git a/src/devices/wifi/nm-iwd-manager.h b/src/devices/wifi/nm-
> iwd-manager.h
> new file mode 100644
> index 000000000..30cfe6035
> --- /dev/null
> +++ b/src/devices/wifi/nm-iwd-manager.h
> @@ -0,0 +1,53 @@
> +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4
> -*- */
> +/* NetworkManager -- Network link manager
> + *
> + * This program is free software; you can redistribute it and/or
> modify
> + * it under the terms of the GNU General Public License as published
> by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> along
> + * with this program; if not, write to the Free Software Foundation,
> Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * Copyright (C) 2017 Intel Corporation
> + */
> +
> +#ifndef __NETWORKMANAGER_IWD_MANAGER_H__
> +#define __NETWORKMANAGER_IWD_MANAGER_H__
> +
> +#include "devices/nm-device.h"
> +
> +#define IWD_BUS_TYPE                 G_BUS_TYPE_SYSTEM
> +#define IWD_SERVICE                  "net.connman.iwd"
> +
> +#define IWD_AGENT_MANAGER_INTERFACE  "net.connman.iwd.AgentMan
> ager"
> +#define IWD_WIPHY_INTERFACE          "net.connman.iwd.Adapter"
> +#define IWD_DEVICE_INTERFACE         "net.connman.iwd.Device"
> +#define IWD_NETWORK_INTERFACE                "net.connman.iwd.Networ
> k"

Tabs should only ever appear at the beginning of a line.

There are other places with whitespace error:

  $ git diff origin/master | grep -P  '^[+].*[^\t]\t'


> +#define IWD_AGENT_INTERFACE          "net.connman.iwd.Agent"
> +#define IWD_WSC_INTERFACE            \
> +     "net.connman.iwd.WiFiSimpleConfiguration"
> +#define IWD_KNOWN_NETWORKS_INTERFACE "net.connman.iwd.KnownNe
> tworks"
> +#define IWD_SIGNAL_AGENT_INTERFACE   "net.connman.iwd.SignalLev
> elAgent"

I wish that all our entities in header files had an "nm" prefix (one of
the forms of nm_, _nm_, NM_, _NM_). Even if it's internal-only API.

We also have some variations like nmp_, nmtst_, nmc_, nmdbus_, but rule
still applies there.

Yes, there are some violations to that rule (which should be fixed).



> +
> +#define NM_TYPE_IWD_MANAGER              (nm_iwd_manager_get_type
> ())
> +#define NM_IWD_MANAGER(obj)              (G_TYPE_CHECK_INSTANCE_CAST
> ((obj), NM_TYPE_IWD_MANAGER, NMIwdManager))
> +#define NM_IWD_MANAGER_CLASS(klass)      (G_TYPE_CHECK_CLASS_CAST
> ((klass),  NM_TYPE_IWD_MANAGER, NMIWDManagerClass))
> +#define NM_IS_IWD_MANAGER(obj)           (G_TYPE_CHECK_INSTANCE_TYPE
> ((obj), NM_TYPE_IWD_MANAGER))
> +#define NM_IS_IWD_MANAGER_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE
> ((klass),  NM_TYPE_IWD_MANAGER))
> +#define NM_IWD_MANAGER_GET_CLASS(obj)    (G_TYPE_INSTANCE_GET_CLASS
> ((obj),  NM_TYPE_IWD_MANAGER, NMIWDManagerClass))
> +
> +typedef struct _NMIwdManager NMIwdManager;
> +typedef struct _NMIwdManagerClass NMIwdManagerClass;
> +
> +GType nm_iwd_manager_get_type (void);
> +
> +NMIwdManager *nm_iwd_manager_get (void);
> +
> +#endif /* __NETWORKMANAGER_IWD_MANAGER_H__ */

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