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NetworkManager/libnm/nm-access-point.c
Thomas Haller 0fca809bfd
all: explicit include <linux/if_{ether,infiniband,vlan}.h> as needed 
Currently libnm headers include <linux/if_{ether,infiniband,vlan}.h>.
These are public headers, that means we drag in the linux header to all
users of <NetworkManager.h>.

Often the linux headers work badly together with certain headers from libc.
Depending on the libc version, you have to order linux headers in the right
order with respect to libc headers.

We should do better about libnm headers. As a first step, assume that
the linux headers don't get included by libnm, and explicitly include
them where they are needed.
2020-12-22 16:33:33 +01:00

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/* SPDX-License-Identifier: LGPL-2.1+ */
/*
* Copyright (C) 2007 - 2008 Novell, Inc.
* Copyright (C) 2007 - 2011 Red Hat, Inc.
*/
#include "nm-default.h"
#include "nm-access-point.h"
#include <linux/if_ether.h>
#include "nm-connection.h"
#include "nm-setting-connection.h"
#include "nm-setting-wireless.h"
#include "nm-setting-wireless-security.h"
#include "nm-utils.h"
#include "nm-dbus-interface.h"
#include "nm-object-private.h"
/*****************************************************************************/
NM_GOBJECT_PROPERTIES_DEFINE(NMAccessPoint,
PROP_FLAGS,
PROP_WPA_FLAGS,
PROP_RSN_FLAGS,
PROP_SSID,
PROP_FREQUENCY,
PROP_HW_ADDRESS,
PROP_MODE,
PROP_MAX_BITRATE,
PROP_STRENGTH,
PROP_BSSID,
PROP_LAST_SEEN, );
typedef struct {
GBytes *ssid;
char * bssid;
guint32 flags;
guint32 wpa_flags;
guint32 rsn_flags;
guint32 frequency;
guint32 mode;
guint32 max_bitrate;
gint32 last_seen;
guint8 strength;
} NMAccessPointPrivate;
struct _NMAccessPoint {
NMObject parent;
NMAccessPointPrivate _priv;
};
struct _NMAccessPointClass {
NMObjectClass parent;
};
G_DEFINE_TYPE(NMAccessPoint, nm_access_point, NM_TYPE_OBJECT)
#define NM_ACCESS_POINT_GET_PRIVATE(self) \
_NM_GET_PRIVATE(self, NMAccessPoint, NM_IS_ACCESS_POINT, NMObject)
/*****************************************************************************/
/**
* nm_access_point_get_flags:
* @ap: a #NMAccessPoint
*
* Gets the flags of the access point.
*
* Returns: the flags
**/
NM80211ApFlags
nm_access_point_get_flags(NMAccessPoint *ap)
{
g_return_val_if_fail(NM_IS_ACCESS_POINT(ap), NM_802_11_AP_FLAGS_NONE);
return NM_ACCESS_POINT_GET_PRIVATE(ap)->flags;
}
/**
* nm_access_point_get_wpa_flags:
* @ap: a #NMAccessPoint
*
* Gets the WPA (version 1) flags of the access point.
*
* Returns: the WPA flags
**/
NM80211ApSecurityFlags
nm_access_point_get_wpa_flags(NMAccessPoint *ap)
{
g_return_val_if_fail(NM_IS_ACCESS_POINT(ap), NM_802_11_AP_SEC_NONE);
return NM_ACCESS_POINT_GET_PRIVATE(ap)->wpa_flags;
}
/**
* nm_access_point_get_rsn_flags:
* @ap: a #NMAccessPoint
*
* Gets the RSN (Robust Secure Network, ie WPA version 2) flags of the access
* point.
*
* Returns: the RSN flags
**/
NM80211ApSecurityFlags
nm_access_point_get_rsn_flags(NMAccessPoint *ap)
{
g_return_val_if_fail(NM_IS_ACCESS_POINT(ap), NM_802_11_AP_SEC_NONE);
return NM_ACCESS_POINT_GET_PRIVATE(ap)->rsn_flags;
}
/**
* nm_access_point_get_ssid:
* @ap: a #NMAccessPoint
*
* Gets the SSID of the access point.
*
* Returns: (transfer none): the #GBytes containing the SSID, or %NULL if the
* SSID is unknown.
**/
GBytes *
nm_access_point_get_ssid(NMAccessPoint *ap)
{
NMAccessPointPrivate *priv;
g_return_val_if_fail(NM_IS_ACCESS_POINT(ap), NULL);
priv = NM_ACCESS_POINT_GET_PRIVATE(ap);
nm_assert(!priv->ssid || g_bytes_get_size(priv->ssid) > 0);
return priv->ssid;
}
/**
* nm_access_point_get_frequency:
* @ap: a #NMAccessPoint
*
* Gets the frequency of the access point in MHz.
*
* Returns: the frequency in MHz
**/
guint32
nm_access_point_get_frequency(NMAccessPoint *ap)
{
g_return_val_if_fail(NM_IS_ACCESS_POINT(ap), 0);
return NM_ACCESS_POINT_GET_PRIVATE(ap)->frequency;
}
/**
* nm_access_point_get_bssid:
* @ap: a #NMAccessPoint
*
* Gets the Basic Service Set ID (BSSID) of the Wi-Fi access point.
*
* Returns: the BSSID of the access point. This is an internal string and must
* not be modified or freed.
**/
const char *
nm_access_point_get_bssid(NMAccessPoint *ap)
{
g_return_val_if_fail(NM_IS_ACCESS_POINT(ap), NULL);
return _nml_coerce_property_str_not_empty(NM_ACCESS_POINT_GET_PRIVATE(ap)->bssid);
}
/**
* nm_access_point_get_mode:
* @ap: a #NMAccessPoint
*
* Gets the mode of the access point.
*
* Returns: the mode
**/
NM80211Mode
nm_access_point_get_mode(NMAccessPoint *ap)
{
g_return_val_if_fail(NM_IS_ACCESS_POINT(ap), 0);
return NM_ACCESS_POINT_GET_PRIVATE(ap)->mode;
}
/**
* nm_access_point_get_max_bitrate:
* @ap: a #NMAccessPoint
*
* Gets the maximum bit rate of the access point in kbit/s.
*
* Returns: the maximum bit rate (kbit/s)
**/
guint32
nm_access_point_get_max_bitrate(NMAccessPoint *ap)
{
g_return_val_if_fail(NM_IS_ACCESS_POINT(ap), 0);
return NM_ACCESS_POINT_GET_PRIVATE(ap)->max_bitrate;
}
/**
* nm_access_point_get_strength:
* @ap: a #NMAccessPoint
*
* Gets the current signal strength of the access point as a percentage.
*
* Returns: the signal strength (0 to 100)
**/
guint8
nm_access_point_get_strength(NMAccessPoint *ap)
{
g_return_val_if_fail(NM_IS_ACCESS_POINT(ap), 0);
return NM_ACCESS_POINT_GET_PRIVATE(ap)->strength;
}
/**
* nm_access_point_get_last_seen:
* @ap: a #NMAccessPoint
*
* Returns the timestamp (in CLOCK_BOOTTIME seconds) for the last time the
* access point was found in scan results. A value of -1 means the access
* point has not been found in a scan.
*
* Returns: the last seen time in seconds
*
* Since: 1.2
**/
int
nm_access_point_get_last_seen(NMAccessPoint *ap)
{
g_return_val_if_fail(NM_IS_ACCESS_POINT(ap), -1);
return NM_ACCESS_POINT_GET_PRIVATE(ap)->last_seen;
}
NM_BACKPORT_SYMBOL(libnm_1_0_6, int, nm_access_point_get_last_seen, (NMAccessPoint * ap), (ap));
/**
* nm_access_point_connection_valid:
* @ap: an #NMAccessPoint to validate @connection against
* @connection: an #NMConnection to validate against @ap
*
* Validates a given connection against a given Wi-Fi access point to ensure that
* the connection may be activated with that AP. The connection must match the
* @ap's SSID, (if given) BSSID, and other attributes like security settings,
* channel, band, etc.
*
* Returns: %TRUE if the connection may be activated with this Wi-Fi AP,
* %FALSE if it cannot be.
**/
gboolean
nm_access_point_connection_valid(NMAccessPoint *ap, NMConnection *connection)
{
NMSettingConnection * s_con;
NMSettingWireless * s_wifi;
NMSettingWirelessSecurity *s_wsec;
const char * ctype, *ap_bssid;
GBytes * setting_ssid;
GBytes * ap_ssid;
const char * setting_bssid;
const char * setting_mode;
NM80211Mode ap_mode;
const char * setting_band;
guint32 ap_freq, setting_chan, ap_chan;
g_return_val_if_fail(NM_IS_ACCESS_POINT(ap), FALSE);
g_return_val_if_fail(NM_IS_CONNECTION(connection), FALSE);
s_con = nm_connection_get_setting_connection(connection);
if (!s_con)
return FALSE;
ctype = nm_setting_connection_get_connection_type(s_con);
if (!ctype || !nm_streq(ctype, NM_SETTING_WIRELESS_SETTING_NAME))
return FALSE;
s_wifi = nm_connection_get_setting_wireless(connection);
if (!s_wifi)
return FALSE;
/* SSID checks */
ap_ssid = nm_access_point_get_ssid(ap);
if (!ap_ssid)
return FALSE;
setting_ssid = nm_setting_wireless_get_ssid(s_wifi);
if (!setting_ssid || !g_bytes_equal(ap_ssid, setting_ssid))
return FALSE;
/* BSSID checks */
ap_bssid = nm_access_point_get_bssid(ap);
if (!ap_bssid)
return FALSE;
setting_bssid = nm_setting_wireless_get_bssid(s_wifi);
if (setting_bssid) {
guint8 c[ETH_ALEN];
if (!nm_utils_hwaddr_aton(ap_bssid, c, ETH_ALEN)
|| !nm_utils_hwaddr_matches(c, ETH_ALEN, setting_bssid, -1))
return FALSE;
}
/* Mode */
ap_mode = nm_access_point_get_mode(ap);
if (ap_mode == NM_802_11_MODE_UNKNOWN)
return FALSE;
setting_mode = nm_setting_wireless_get_mode(s_wifi);
if (setting_mode && ap_mode) {
if (!strcmp(setting_mode, "infrastructure") && (ap_mode != NM_802_11_MODE_INFRA))
return FALSE;
if (!strcmp(setting_mode, "adhoc") && (ap_mode != NM_802_11_MODE_ADHOC))
return FALSE;
/* Hotspot never matches against APs as it's a device-specific mode. */
if (!strcmp(setting_mode, "ap"))
return FALSE;
}
/* Band and Channel/Frequency */
ap_freq = nm_access_point_get_frequency(ap);
if (ap_freq) {
setting_band = nm_setting_wireless_get_band(s_wifi);
if (g_strcmp0(setting_band, "a") == 0) {
if (ap_freq < 4915 || ap_freq > 5825)
return FALSE;
} else if (g_strcmp0(setting_band, "bg") == 0) {
if (ap_freq < 2412 || ap_freq > 2484)
return FALSE;
}
setting_chan = nm_setting_wireless_get_channel(s_wifi);
if (setting_chan) {
ap_chan = nm_utils_wifi_freq_to_channel(ap_freq);
if (setting_chan != ap_chan)
return FALSE;
}
}
s_wsec = nm_connection_get_setting_wireless_security(connection);
if (!nm_setting_wireless_ap_security_compatible(s_wifi,
s_wsec,
nm_access_point_get_flags(ap),
nm_access_point_get_wpa_flags(ap),
nm_access_point_get_rsn_flags(ap),
ap_mode))
return FALSE;
return TRUE;
}
/**
* nm_access_point_filter_connections:
* @ap: an #NMAccessPoint to filter connections for
* @connections: (element-type NMConnection): an array of #NMConnections to
* filter
*
* Filters a given array of connections for a given #NMAccessPoint object and
* returns connections which may be activated with the access point. Any
* returned connections will match the @ap's SSID and (if given) BSSID and
* other attributes like security settings, channel, etc.
*
* To obtain the list of connections that are compatible with this access point,
* use nm_client_get_connections() and then filter the returned list for a given
* #NMDevice using nm_device_filter_connections() and finally filter that list
* with this function.
*
* Returns: (transfer full) (element-type NMConnection): an array of
* #NMConnections that could be activated with the given @ap. The array should
* be freed with g_ptr_array_unref() when it is no longer required.
*
* WARNING: the transfer annotation for this function may not work correctly
* with bindings. See https://gitlab.gnome.org/GNOME/gobject-introspection/-/issues/305.
* You can filter the list yourself with nm_access_point_connection_valid().
**/
GPtrArray *
nm_access_point_filter_connections(NMAccessPoint *ap, const GPtrArray *connections)
{
GPtrArray *filtered;
guint i;
g_return_val_if_fail(NM_IS_ACCESS_POINT(ap), NULL);
if (!connections)
return NULL;
filtered = g_ptr_array_new_with_free_func(g_object_unref);
for (i = 0; i < connections->len; i++) {
NMConnection *candidate = connections->pdata[i];
if (nm_access_point_connection_valid(ap, candidate))
g_ptr_array_add(filtered, g_object_ref(candidate));
}
return filtered;
}
/*****************************************************************************/
static NMLDBusNotifyUpdatePropFlags
_notify_update_prop_hw_address(NMClient * client,
NMLDBusObject * dbobj,
const NMLDBusMetaIface *meta_iface,
guint dbus_property_idx,
GVariant * value)
{
NMAccessPoint * self = NM_ACCESS_POINT(dbobj->nmobj);
NMAccessPointPrivate *priv = NM_ACCESS_POINT_GET_PRIVATE(self);
g_free(priv->bssid);
priv->bssid = value ? g_variant_dup_string(value, NULL) : 0u;
_notify(self, PROP_HW_ADDRESS);
return NML_DBUS_NOTIFY_UPDATE_PROP_FLAGS_NOTIFY;
}
/*****************************************************************************/
static void
nm_access_point_init(NMAccessPoint *ap)
{
NM_ACCESS_POINT_GET_PRIVATE(ap)->last_seen = -1;
}
static void
finalize(GObject *object)
{
NMAccessPointPrivate *priv = NM_ACCESS_POINT_GET_PRIVATE(object);
if (priv->ssid)
g_bytes_unref(priv->ssid);
g_free(priv->bssid);
G_OBJECT_CLASS(nm_access_point_parent_class)->finalize(object);
}
static void
get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
NMAccessPoint *ap = NM_ACCESS_POINT(object);
switch (prop_id) {
case PROP_FLAGS:
g_value_set_flags(value, nm_access_point_get_flags(ap));
break;
case PROP_WPA_FLAGS:
g_value_set_flags(value, nm_access_point_get_wpa_flags(ap));
break;
case PROP_RSN_FLAGS:
g_value_set_flags(value, nm_access_point_get_rsn_flags(ap));
break;
case PROP_SSID:
g_value_set_boxed(value, nm_access_point_get_ssid(ap));
break;
case PROP_FREQUENCY:
g_value_set_uint(value, nm_access_point_get_frequency(ap));
break;
case PROP_HW_ADDRESS:
g_value_set_string(value, nm_access_point_get_bssid(ap));
break;
case PROP_BSSID:
g_value_set_string(value, nm_access_point_get_bssid(ap));
break;
case PROP_MODE:
g_value_set_enum(value, nm_access_point_get_mode(ap));
break;
case PROP_MAX_BITRATE:
g_value_set_uint(value, nm_access_point_get_max_bitrate(ap));
break;
case PROP_STRENGTH:
g_value_set_uchar(value, nm_access_point_get_strength(ap));
break;
case PROP_LAST_SEEN:
g_value_set_int(value, nm_access_point_get_last_seen(ap));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
}
}
const NMLDBusMetaIface _nml_dbus_meta_iface_nm_accesspoint = NML_DBUS_META_IFACE_INIT_PROP(
NM_DBUS_INTERFACE_ACCESS_POINT,
nm_access_point_get_type,
NML_DBUS_META_INTERFACE_PRIO_INSTANTIATE_30,
NML_DBUS_META_IFACE_DBUS_PROPERTIES(
NML_DBUS_META_PROPERTY_INIT_U("Flags", PROP_FLAGS, NMAccessPoint, _priv.flags),
NML_DBUS_META_PROPERTY_INIT_U("Frequency", PROP_FREQUENCY, NMAccessPoint, _priv.frequency),
NML_DBUS_META_PROPERTY_INIT_FCN("HwAddress",
PROP_BSSID,
"s",
_notify_update_prop_hw_address),
NML_DBUS_META_PROPERTY_INIT_I("LastSeen", PROP_LAST_SEEN, NMAccessPoint, _priv.last_seen),
NML_DBUS_META_PROPERTY_INIT_U("MaxBitrate",
PROP_MAX_BITRATE,
NMAccessPoint,
_priv.max_bitrate),
NML_DBUS_META_PROPERTY_INIT_U("Mode", PROP_MODE, NMAccessPoint, _priv.mode),
NML_DBUS_META_PROPERTY_INIT_U("RsnFlags", PROP_RSN_FLAGS, NMAccessPoint, _priv.rsn_flags),
NML_DBUS_META_PROPERTY_INIT_AY("Ssid", PROP_SSID, NMAccessPoint, _priv.ssid),
NML_DBUS_META_PROPERTY_INIT_Y("Strength", PROP_STRENGTH, NMAccessPoint, _priv.strength),
NML_DBUS_META_PROPERTY_INIT_U("WpaFlags",
PROP_WPA_FLAGS,
NMAccessPoint,
_priv.wpa_flags), ), );
static void
nm_access_point_class_init(NMAccessPointClass *ap_class)
{
GObjectClass *object_class = G_OBJECT_CLASS(ap_class);
object_class->get_property = get_property;
object_class->finalize = finalize;
/**
* NMAccessPoint:flags:
*
* The flags of the access point.
**/
obj_properties[PROP_FLAGS] = g_param_spec_flags(NM_ACCESS_POINT_FLAGS,
"",
"",
NM_TYPE_802_11_AP_FLAGS,
NM_802_11_AP_FLAGS_NONE,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
/**
* NMAccessPoint:wpa-flags:
*
* The WPA flags of the access point.
**/
obj_properties[PROP_WPA_FLAGS] = g_param_spec_flags(NM_ACCESS_POINT_WPA_FLAGS,
"",
"",
NM_TYPE_802_11_AP_SECURITY_FLAGS,
NM_802_11_AP_SEC_NONE,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
/**
* NMAccessPoint:rsn-flags:
*
* The RSN flags of the access point.
**/
obj_properties[PROP_RSN_FLAGS] = g_param_spec_flags(NM_ACCESS_POINT_RSN_FLAGS,
"",
"",
NM_TYPE_802_11_AP_SECURITY_FLAGS,
NM_802_11_AP_SEC_NONE,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
/**
* NMAccessPoint:ssid:
*
* The SSID of the access point, or %NULL if it is not known.
**/
obj_properties[PROP_SSID] = g_param_spec_boxed(NM_ACCESS_POINT_SSID,
"",
"",
G_TYPE_BYTES,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
/**
* NMAccessPoint:frequency:
*
* The frequency of the access point.
**/
obj_properties[PROP_FREQUENCY] = g_param_spec_uint(NM_ACCESS_POINT_FREQUENCY,
"",
"",
0,
10000,
0,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
/**
* NMAccessPoint:bssid:
*
* The BSSID of the access point.
**/
obj_properties[PROP_BSSID] = g_param_spec_string(NM_ACCESS_POINT_BSSID,
"",
"",
NULL,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
/**
* NMAccessPoint:hw-address:
*
* Alias for #NMAccessPoint:bssid.
*
* Deprecated: 1.0: Use #NMAccessPoint:bssid.
**/
obj_properties[PROP_HW_ADDRESS] =
g_param_spec_string(NM_ACCESS_POINT_HW_ADDRESS,
"",
"",
NULL,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
/**
* NMAccessPoint:mode:
*
* The mode of the access point; either "infrastructure" (a central
* coordinator of the wireless network allowing clients to connect) or
* "ad-hoc" (a network with no central controller).
**/
obj_properties[PROP_MODE] = g_param_spec_enum(NM_ACCESS_POINT_MODE,
"",
"",
NM_TYPE_802_11_MODE,
NM_802_11_MODE_UNKNOWN,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
/**
* NMAccessPoint:max-bitrate:
*
* The maximum bit rate of the access point in kbit/s.
**/
obj_properties[PROP_MAX_BITRATE] = g_param_spec_uint(NM_ACCESS_POINT_MAX_BITRATE,
"",
"",
0,
G_MAXUINT32,
0,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
/**
* NMAccessPoint:strength:
*
* The current signal strength of the access point.
**/
obj_properties[PROP_STRENGTH] = g_param_spec_uchar(NM_ACCESS_POINT_STRENGTH,
"",
"",
0,
G_MAXUINT8,
0,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
/**
* NMAccessPoint:last-seen:
*
* The timestamp (in CLOCK_BOOTTIME seconds) for the last time the
* access point was found in scan results. A value of -1 means the
* access point has not been found in a scan.
*
* Since: 1.2
**/
obj_properties[PROP_LAST_SEEN] = g_param_spec_int(NM_ACCESS_POINT_LAST_SEEN,
"",
"",
-1,
G_MAXINT,
-1,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
_nml_dbus_meta_class_init_with_properties(object_class, &_nml_dbus_meta_iface_nm_accesspoint);
}
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