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c309a2bc8a27a63b49552c3ecec20bdd6463b555
NetworkManager/src/nm-wifi-ap.c
Simon Schampijer c309a2bc8a wifi: fix B/G band adhoc wifi auto channel selection
2010-04-22 17:14:33 -07:00

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36 KiB
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/* -*- 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) 2004 - 2008 Red Hat, Inc.
* Copyright (C) 2006 - 2008 Novell, Inc.
*/
#include "wireless-helper.h"
#include <string.h>
#include "nm-wifi-ap.h"
#include "NetworkManagerUtils.h"
#include "nm-utils.h"
#include "nm-logging.h"
#include "nm-dbus-manager.h"
#include "wpa.h"
#include "nm-properties-changed-signal.h"
#include "nm-setting-wireless.h"
#include "nm-access-point-glue.h"
/*
* Encapsulates Access Point information
*/
typedef struct
{
char *dbus_path;
/* Scanned or cached values */
GByteArray * ssid;
struct ether_addr address;
NM80211Mode mode;
gint8 strength;
guint32 freq; /* Frequency in MHz; ie 2412 (== 2.412 GHz) */
guint32 max_bitrate;/* Maximum bitrate of the AP in Kbit/s (ie 54000 Kb/s == 54Mbit/s) */
guint32 flags; /* General flags */
guint32 wpa_flags; /* WPA-related flags */
guint32 rsn_flags; /* RSN (WPA2) -related flags */
/* Non-scanned attributes */
gboolean fake; /* Whether or not the AP is from a scan */
gboolean broadcast; /* Whether or not the AP is broadcasting (hidden) */
gboolean user_created; /* Whether or not the AP was created
* by the user with "Create network..."
* A subset of Ad-Hoc mode. user_created
* implies Ad-Hoc, but not necessarily
* the other way around.
*/
glong last_seen; /* Last time the AP was seen in a scan in seconds */
/* Things from user prefs/NetworkManagerInfo */
GTimeVal timestamp;
GSList * user_addresses;
} NMAccessPointPrivate;
#define NM_AP_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NM_TYPE_AP, NMAccessPointPrivate))
G_DEFINE_TYPE (NMAccessPoint, nm_ap, G_TYPE_OBJECT)
enum {
PROPERTIES_CHANGED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
enum {
PROP_0,
PROP_FLAGS,
PROP_WPA_FLAGS,
PROP_RSN_FLAGS,
PROP_SSID,
PROP_FREQUENCY,
PROP_HW_ADDRESS,
PROP_MODE,
PROP_MAX_BITRATE,
PROP_STRENGTH,
LAST_PROP
};
static void
nm_ap_init (NMAccessPoint *ap)
{
NMAccessPointPrivate *priv = NM_AP_GET_PRIVATE (ap);
priv->dbus_path = NULL;
priv->mode = NM_802_11_MODE_INFRA;
priv->flags = NM_802_11_AP_FLAGS_NONE;
priv->wpa_flags = NM_802_11_AP_SEC_NONE;
priv->rsn_flags = NM_802_11_AP_SEC_NONE;
priv->broadcast = TRUE;
}
static void
finalize (GObject *object)
{
NMAccessPointPrivate *priv = NM_AP_GET_PRIVATE (object);
g_free (priv->dbus_path);
if (priv->ssid)
g_byte_array_free (priv->ssid, TRUE);
g_slist_foreach (priv->user_addresses, (GFunc)g_free, NULL);
g_slist_free (priv->user_addresses);
G_OBJECT_CLASS (nm_ap_parent_class)->finalize (object);
}
static void
set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec)
{
NMAccessPoint *ap = NM_AP (object);
switch (prop_id) {
case PROP_FLAGS:
nm_ap_set_flags (ap, g_value_get_uint (value));
break;
case PROP_WPA_FLAGS:
nm_ap_set_wpa_flags (ap, g_value_get_uint (value));
break;
case PROP_RSN_FLAGS:
nm_ap_set_rsn_flags (ap, g_value_get_uint (value));
break;
case PROP_SSID:
nm_ap_set_ssid (ap, (GByteArray *) g_value_get_boxed (value));
break;
case PROP_FREQUENCY:
nm_ap_set_freq (ap, g_value_get_uint (value));
break;
case PROP_MODE:
nm_ap_set_mode (ap, g_value_get_uint (value));
break;
case PROP_MAX_BITRATE:
nm_ap_set_max_bitrate (ap, g_value_get_uint (value));
break;
case PROP_STRENGTH:
nm_ap_set_strength (ap, g_value_get_char (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec)
{
NMAccessPointPrivate *priv = NM_AP_GET_PRIVATE (object);
GArray * ssid;
int len;
int i;
switch (prop_id) {
case PROP_FLAGS:
g_value_set_uint (value, priv->flags);
break;
case PROP_WPA_FLAGS:
g_value_set_uint (value, priv->wpa_flags);
break;
case PROP_RSN_FLAGS:
g_value_set_uint (value, priv->rsn_flags);
break;
case PROP_SSID:
len = priv->ssid ? priv->ssid->len : 0;
ssid = g_array_sized_new (FALSE, TRUE, sizeof (unsigned char), len);
for (i = 0; i < len; i++)
g_array_append_val (ssid, priv->ssid->data[i]);
g_value_set_boxed (value, ssid);
g_array_free (ssid, TRUE);
break;
case PROP_FREQUENCY:
g_value_set_uint (value, priv->freq);
break;
case PROP_HW_ADDRESS:
g_value_take_string (value, nm_ether_ntop (&priv->address));
break;
case PROP_MODE:
g_value_set_uint (value, priv->mode);
break;
case PROP_MAX_BITRATE:
g_value_set_uint (value, priv->max_bitrate);
break;
case PROP_STRENGTH:
g_value_set_char (value, priv->strength);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
nm_ap_class_init (NMAccessPointClass *ap_class)
{
GObjectClass *object_class = G_OBJECT_CLASS (ap_class);
guint32 all_sec_flags;
g_type_class_add_private (ap_class, sizeof (NMAccessPointPrivate));
/* virtual methods */
object_class->set_property = set_property;
object_class->get_property = get_property;
object_class->finalize = finalize;
/* properties */
all_sec_flags = NM_802_11_AP_SEC_NONE
| NM_802_11_AP_SEC_PAIR_WEP40
| NM_802_11_AP_SEC_PAIR_WEP104
| NM_802_11_AP_SEC_PAIR_TKIP
| NM_802_11_AP_SEC_PAIR_CCMP
| NM_802_11_AP_SEC_GROUP_WEP40
| NM_802_11_AP_SEC_GROUP_WEP104
| NM_802_11_AP_SEC_GROUP_TKIP
| NM_802_11_AP_SEC_GROUP_CCMP
| NM_802_11_AP_SEC_KEY_MGMT_PSK
| NM_802_11_AP_SEC_KEY_MGMT_802_1X;
g_object_class_install_property
(object_class, PROP_FLAGS,
g_param_spec_uint (NM_AP_FLAGS,
"Flags",
"Flags",
NM_802_11_AP_FLAGS_NONE,
NM_802_11_AP_FLAGS_PRIVACY,
NM_802_11_AP_FLAGS_NONE,
G_PARAM_READWRITE));
g_object_class_install_property
(object_class, PROP_WPA_FLAGS,
g_param_spec_uint (NM_AP_WPA_FLAGS,
"WPA Flags",
"WPA Flags",
NM_802_11_AP_SEC_NONE,
all_sec_flags,
NM_802_11_AP_SEC_NONE,
G_PARAM_READWRITE));
g_object_class_install_property
(object_class, PROP_RSN_FLAGS,
g_param_spec_uint (NM_AP_RSN_FLAGS,
"RSN Flags",
"RSN Flags",
NM_802_11_AP_SEC_NONE,
all_sec_flags,
NM_802_11_AP_SEC_NONE,
G_PARAM_READWRITE));
g_object_class_install_property
(object_class, PROP_SSID,
g_param_spec_boxed (NM_AP_SSID,
"SSID",
"SSID",
DBUS_TYPE_G_UCHAR_ARRAY,
G_PARAM_READWRITE));
g_object_class_install_property
(object_class, PROP_FREQUENCY,
g_param_spec_uint (NM_AP_FREQUENCY,
"Frequency",
"Frequency",
0, 10000, 0,
G_PARAM_READWRITE));
g_object_class_install_property
(object_class, PROP_HW_ADDRESS,
g_param_spec_string (NM_AP_HW_ADDRESS,
"MAC Address",
"Hardware MAC address",
NULL,
G_PARAM_READABLE));
g_object_class_install_property
(object_class, PROP_MODE,
g_param_spec_uint (NM_AP_MODE,
"Mode",
"Mode",
NM_802_11_MODE_ADHOC, NM_802_11_MODE_INFRA, NM_802_11_MODE_INFRA,
G_PARAM_READWRITE));
g_object_class_install_property
(object_class, PROP_MAX_BITRATE,
g_param_spec_uint (NM_AP_MAX_BITRATE,
"Max Bitrate",
"Max Bitrate",
0, G_MAXUINT16, 0,
G_PARAM_READWRITE));
g_object_class_install_property
(object_class, PROP_STRENGTH,
g_param_spec_char (NM_AP_STRENGTH,
"Strength",
"Strength",
G_MININT8, G_MAXINT8, 0,
G_PARAM_READWRITE));
/* Signals */
signals[PROPERTIES_CHANGED] =
nm_properties_changed_signal_new (object_class,
G_STRUCT_OFFSET (NMAccessPointClass, properties_changed));
dbus_g_object_type_install_info (G_TYPE_FROM_CLASS (ap_class),
&dbus_glib_nm_access_point_object_info);
}
void
nm_ap_export_to_dbus (NMAccessPoint *ap)
{
NMAccessPointPrivate *priv;
NMDBusManager *mgr;
DBusGConnection *g_connection;
static guint32 counter = 0;
g_return_if_fail (NM_IS_AP (ap));
priv = NM_AP_GET_PRIVATE (ap);
if (priv->dbus_path) {
nm_log_err (LOGD_CORE, "Tried to export AP %s twice.", priv->dbus_path);
return;
}
mgr = nm_dbus_manager_get ();
g_assert (mgr);
g_connection = nm_dbus_manager_get_connection (mgr);
g_assert (g_connection);
priv->dbus_path = g_strdup_printf (NM_DBUS_PATH_ACCESS_POINT "/%d", counter++);
dbus_g_connection_register_g_object (g_connection, priv->dbus_path, G_OBJECT (ap));
g_object_unref (mgr);
}
/*
* nm_ap_new
*
* Create a new, blank user access point info structure
*
*/
NMAccessPoint *nm_ap_new (void)
{
GObject *object;
object = g_object_new (NM_TYPE_AP, NULL);
if (!object)
return NULL;
return (NMAccessPoint *) object;
}
#define IEEE80211_CAP_ESS 0x0001
#define IEEE80211_CAP_IBSS 0x0002
#define IEEE80211_CAP_PRIVACY 0x0010
static void
foreach_property_cb (gpointer key, gpointer value, gpointer user_data)
{
GValue *variant = (GValue *) value;
NMAccessPoint *ap = (NMAccessPoint *) user_data;
if (G_VALUE_HOLDS_BOXED (variant)) {
GArray *array = g_value_get_boxed (variant);
if (!strcmp (key, "ssid")) {
guint32 len = MIN (IW_ESSID_MAX_SIZE, array->len);
GByteArray * ssid;
/* Stupid ieee80211 layer uses <hidden> */
if (((len == 8) || (len == 9))
&& (memcmp (array->data, "<hidden>", 8) == 0))
return;
if (nm_utils_is_empty_ssid ((const guint8 *) array->data, len))
return;
ssid = g_byte_array_sized_new (len);
g_byte_array_append (ssid, (const guint8 *) array->data, len);
nm_ap_set_ssid (ap, ssid);
g_byte_array_free (ssid, TRUE);
} else if (!strcmp (key, "bssid")) {
struct ether_addr addr;
if (array->len != ETH_ALEN)
return;
memset (&addr, 0, sizeof (struct ether_addr));
memcpy (&addr, array->data, ETH_ALEN);
nm_ap_set_address (ap, &addr);
} else if (!strcmp (key, "wpaie")) {
guint8 * ie = (guint8 *) array->data;
guint32 flags = nm_ap_get_wpa_flags (ap);
if (array->len <= 0 || array->len > WPA_MAX_IE_LEN)
return;
flags = nm_ap_add_security_from_ie (flags, ie, array->len);
nm_ap_set_wpa_flags (ap, flags);
} else if (!strcmp (key, "rsnie")) {
guint8 * ie = (guint8 *) array->data;
guint32 flags = nm_ap_get_rsn_flags (ap);
if (array->len <= 0 || array->len > WPA_MAX_IE_LEN)
return;
flags = nm_ap_add_security_from_ie (flags, ie, array->len);
nm_ap_set_rsn_flags (ap, flags);
}
} else if (G_VALUE_HOLDS_INT (variant)) {
gint32 int_val = g_value_get_int (variant);
if (!strcmp (key, "frequency")) {
nm_ap_set_freq (ap, (guint32) int_val);
} else if (!strcmp (key, "maxrate")) {
/* Supplicant reports as b/s, we use Kb/s internally */
nm_ap_set_max_bitrate (ap, int_val / 1000);
}
} else if (G_VALUE_HOLDS_UINT (variant)) {
guint32 val = g_value_get_uint (variant);
if (!strcmp (key, "capabilities")) {
if (val & IEEE80211_CAP_ESS) {
nm_ap_set_mode (ap, NM_802_11_MODE_INFRA);
} else if (val & IEEE80211_CAP_IBSS) {
nm_ap_set_mode (ap, NM_802_11_MODE_ADHOC);
}
if (val & IEEE80211_CAP_PRIVACY) {
guint32 flags = nm_ap_get_flags (ap);
nm_ap_set_flags (ap, flags | NM_802_11_AP_FLAGS_PRIVACY);
}
}
}
}
NMAccessPoint *
nm_ap_new_from_properties (GHashTable *properties)
{
NMAccessPoint *ap;
GTimeVal cur_time;
const struct ether_addr * addr;
const char bad_bssid1[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
const char bad_bssid2[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
g_return_val_if_fail (properties != NULL, NULL);
ap = nm_ap_new ();
g_object_freeze_notify (G_OBJECT (ap));
g_hash_table_foreach (properties, foreach_property_cb, ap);
/* ignore APs with invalid BSSIDs */
addr = nm_ap_get_address (ap);
if ( !(memcmp (addr->ether_addr_octet, bad_bssid1, ETH_ALEN))
|| !(memcmp (addr->ether_addr_octet, bad_bssid2, ETH_ALEN))) {
g_object_unref (ap);
return NULL;
}
g_get_current_time (&cur_time);
nm_ap_set_last_seen (ap, cur_time.tv_sec);
if (!nm_ap_get_ssid (ap))
nm_ap_set_broadcast (ap, FALSE);
g_object_thaw_notify (G_OBJECT (ap));
return ap;
}
#define PROTO_WPA "wpa"
#define PROTO_RSN "rsn"
static gboolean
has_proto (NMSettingWirelessSecurity *sec, const char *proto)
{
guint32 num_protos = nm_setting_wireless_security_get_num_protos (sec);
guint32 i;
if (num_protos == 0)
return TRUE; /* interpret no protos as "all" */
for (i = 0; i < num_protos; i++) {
if (!strcmp (nm_setting_wireless_security_get_proto (sec, i), proto))
return TRUE;
}
return FALSE;
}
static void
add_pair_ciphers (NMAccessPoint *ap, NMSettingWirelessSecurity *sec)
{
guint32 num = nm_setting_wireless_security_get_num_pairwise (sec);
guint32 flags = NM_802_11_AP_SEC_NONE;
guint32 i;
/* If no ciphers are specified, that means "all" WPA ciphers */
if (num == 0) {
flags |= NM_802_11_AP_SEC_PAIR_TKIP | NM_802_11_AP_SEC_PAIR_CCMP;
} else {
for (i = 0; i < num; i++) {
const char *cipher = nm_setting_wireless_security_get_pairwise (sec, i);
if (!strcmp (cipher, "tkip"))
flags |= NM_802_11_AP_SEC_PAIR_TKIP;
else if (!strcmp (cipher, "ccmp"))
flags |= NM_802_11_AP_SEC_PAIR_CCMP;
}
}
if (has_proto (sec, PROTO_WPA))
nm_ap_set_wpa_flags (ap, nm_ap_get_wpa_flags (ap) | flags);
if (has_proto (sec, PROTO_RSN))
nm_ap_set_rsn_flags (ap, nm_ap_get_rsn_flags (ap) | flags);
}
static void
add_group_ciphers (NMAccessPoint *ap, NMSettingWirelessSecurity *sec)
{
guint32 num = nm_setting_wireless_security_get_num_groups (sec);
guint32 flags = NM_802_11_AP_SEC_NONE;
guint32 i;
/* If no ciphers are specified, that means "all" WPA ciphers */
if (num == 0) {
flags |= NM_802_11_AP_SEC_GROUP_TKIP | NM_802_11_AP_SEC_GROUP_CCMP;
} else {
for (i = 0; i < num; i++) {
const char *cipher = nm_setting_wireless_security_get_group (sec, i);
if (!strcmp (cipher, "wep40"))
flags |= NM_802_11_AP_SEC_GROUP_WEP40;
else if (!strcmp (cipher, "wep104"))
flags |= NM_802_11_AP_SEC_GROUP_WEP104;
else if (!strcmp (cipher, "tkip"))
flags |= NM_802_11_AP_SEC_GROUP_TKIP;
else if (!strcmp (cipher, "ccmp"))
flags |= NM_802_11_AP_SEC_GROUP_CCMP;
}
}
if (has_proto (sec, PROTO_WPA))
nm_ap_set_wpa_flags (ap, nm_ap_get_wpa_flags (ap) | flags);
if (has_proto (sec, PROTO_RSN))
nm_ap_set_rsn_flags (ap, nm_ap_get_rsn_flags (ap) | flags);
}
NMAccessPoint *
nm_ap_new_fake_from_connection (NMConnection *connection)
{
NMAccessPoint *ap;
NMSettingWireless *s_wireless;
NMSettingWirelessSecurity *s_wireless_sec;
const GByteArray *ssid;
const char *mode, *band, *key_mgmt;
guint32 channel, flags;
gboolean psk = FALSE, eap = FALSE;
g_return_val_if_fail (connection != NULL, NULL);
s_wireless = NM_SETTING_WIRELESS (nm_connection_get_setting (connection, NM_TYPE_SETTING_WIRELESS));
g_return_val_if_fail (s_wireless != NULL, NULL);
ssid = nm_setting_wireless_get_ssid (s_wireless);
g_return_val_if_fail (ssid != NULL, NULL);
g_return_val_if_fail (ssid->len > 0, NULL);
ap = nm_ap_new ();
nm_ap_set_fake (ap, TRUE);
nm_ap_set_ssid (ap, ssid);
// FIXME: bssid too?
mode = nm_setting_wireless_get_mode (s_wireless);
if (mode) {
if (!strcmp (mode, "infrastructure"))
nm_ap_set_mode (ap, NM_802_11_MODE_INFRA);
else if (!strcmp (mode, "adhoc"))
nm_ap_set_mode (ap, NM_802_11_MODE_ADHOC);
else
goto error;
} else {
nm_ap_set_mode (ap, NM_802_11_MODE_INFRA);
}
band = nm_setting_wireless_get_band (s_wireless);
channel = nm_setting_wireless_get_channel (s_wireless);
if (band && channel) {
guint32 freq = channel_to_freq (channel, band);
if (freq == 0)
goto error;
nm_ap_set_freq (ap, freq);
}
s_wireless_sec = (NMSettingWirelessSecurity *) nm_connection_get_setting (connection, NM_TYPE_SETTING_WIRELESS_SECURITY);
/* Assume presence of a security setting means the AP is encrypted */
if (!s_wireless_sec)
goto done;
key_mgmt = nm_setting_wireless_security_get_key_mgmt (s_wireless_sec);
/* Everything below here uses encryption */
nm_ap_set_flags (ap, nm_ap_get_flags (ap) | NM_802_11_AP_FLAGS_PRIVACY);
/* Static & Dynamic WEP */
if (!strcmp (key_mgmt, "none") || !strcmp (key_mgmt, "ieee8021x"))
goto done;
psk = !strcmp (key_mgmt, "wpa-psk");
eap = !strcmp (key_mgmt, "wpa-eap");
if (psk || eap) {
if (has_proto (s_wireless_sec, PROTO_WPA)) {
flags = nm_ap_get_wpa_flags (ap);
flags |= eap ? NM_802_11_AP_SEC_KEY_MGMT_802_1X : NM_802_11_AP_SEC_KEY_MGMT_PSK;
nm_ap_set_wpa_flags (ap, flags);
}
if (has_proto (s_wireless_sec, PROTO_RSN)) {
flags = nm_ap_get_rsn_flags (ap);
flags |= eap ? NM_802_11_AP_SEC_KEY_MGMT_802_1X : NM_802_11_AP_SEC_KEY_MGMT_PSK;
nm_ap_set_rsn_flags (ap, flags);
}
add_pair_ciphers (ap, s_wireless_sec);
add_group_ciphers (ap, s_wireless_sec);
} else if (!strcmp (key_mgmt, "wpa-none")) {
guint32 i;
/* Ad-Hoc has special requirements: proto=WPA, pairwise=(none), and
* group=TKIP/CCMP (but not both).
*/
flags = nm_ap_get_wpa_flags (ap);
flags |= NM_802_11_AP_SEC_KEY_MGMT_PSK;
/* Clear ciphers; pairwise must be unset anyway, and group gets set below */
flags &= ~( NM_802_11_AP_SEC_PAIR_WEP40
| NM_802_11_AP_SEC_PAIR_WEP104
| NM_802_11_AP_SEC_PAIR_TKIP
| NM_802_11_AP_SEC_PAIR_CCMP
| NM_802_11_AP_SEC_GROUP_WEP40
| NM_802_11_AP_SEC_GROUP_WEP104
| NM_802_11_AP_SEC_GROUP_TKIP
| NM_802_11_AP_SEC_GROUP_CCMP);
for (i = 0; i < nm_setting_wireless_security_get_num_groups (s_wireless_sec); i++) {
if (!strcmp (nm_setting_wireless_security_get_group (s_wireless_sec, i), "ccmp")) {
flags |= NM_802_11_AP_SEC_GROUP_CCMP;
break;
}
}
/* Default to TKIP since not all WPA-capable cards can do CCMP */
if (!(flags & NM_802_11_AP_SEC_GROUP_CCMP))
flags |= NM_802_11_AP_SEC_GROUP_TKIP;
nm_ap_set_wpa_flags (ap, flags);
/* Don't use Ad-Hoc RSN yet */
nm_ap_set_rsn_flags (ap, NM_802_11_AP_SEC_NONE);
}
done:
return ap;
error:
g_object_unref (ap);
return NULL;
}
#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
#define MAC_ARG(x) ((guint8*)(x))[0],((guint8*)(x))[1],((guint8*)(x))[2],((guint8*)(x))[3],((guint8*)(x))[4],((guint8*)(x))[5]
void
nm_ap_print_self (NMAccessPoint *ap,
const char * prefix)
{
NMAccessPointPrivate *priv;
g_return_if_fail (ap != NULL);
g_return_if_fail (NM_IS_AP (ap));
priv = NM_AP_GET_PRIVATE (ap);
nm_log_dbg (LOGD_WIFI_SCAN, "%s'%s' (%p)",
prefix,
priv->ssid ? nm_utils_escape_ssid (priv->ssid->data, priv->ssid->len) : "(none)",
ap);
nm_log_dbg (LOGD_WIFI_SCAN, " BSSID " MAC_FMT, MAC_ARG (priv->address.ether_addr_octet));
nm_log_dbg (LOGD_WIFI_SCAN, " mode %d", priv->mode);
nm_log_dbg (LOGD_WIFI_SCAN, " timestamp %ld", priv->timestamp.tv_sec);
nm_log_dbg (LOGD_WIFI_SCAN, " flags 0x%X", priv->flags);
nm_log_dbg (LOGD_WIFI_SCAN, " wpa flags 0x%X", priv->wpa_flags);
nm_log_dbg (LOGD_WIFI_SCAN, " rsn flags 0x%X", priv->rsn_flags);
nm_log_dbg (LOGD_WIFI_SCAN, " quality %d", priv->strength);
nm_log_dbg (LOGD_WIFI_SCAN, " frequency %d", priv->freq);
nm_log_dbg (LOGD_WIFI_SCAN, " max rate %d", priv->max_bitrate);
nm_log_dbg (LOGD_WIFI_SCAN, " last-seen %ld", priv->last_seen);
}
const char *
nm_ap_get_dbus_path (NMAccessPoint *ap)
{
g_return_val_if_fail (NM_IS_AP (ap), NULL);
return NM_AP_GET_PRIVATE (ap)->dbus_path;
}
/*
* Get/set functions for timestamp
*
*/
const GTimeVal *nm_ap_get_timestamp (const NMAccessPoint *ap)
{
g_return_val_if_fail (NM_IS_AP (ap), 0);
return (&NM_AP_GET_PRIVATE (ap)->timestamp);
}
void nm_ap_set_timestamp (NMAccessPoint *ap, glong sec, glong usec)
{
NMAccessPointPrivate *priv;
g_return_if_fail (NM_IS_AP (ap));
priv = NM_AP_GET_PRIVATE (ap);
priv->timestamp.tv_sec = sec;
priv->timestamp.tv_usec = usec;
}
void nm_ap_set_timestamp_via_timestamp (NMAccessPoint *ap, const GTimeVal *timestamp)
{
g_return_if_fail (NM_IS_AP (ap));
NM_AP_GET_PRIVATE (ap)->timestamp = *timestamp;
}
/*
* Get/set functions for ssid
*
*/
const GByteArray * nm_ap_get_ssid (const NMAccessPoint *ap)
{
g_return_val_if_fail (NM_IS_AP (ap), NULL);
return NM_AP_GET_PRIVATE (ap)->ssid;
}
void
nm_ap_set_ssid (NMAccessPoint *ap, const GByteArray * ssid)
{
NMAccessPointPrivate *priv;
g_return_if_fail (NM_IS_AP (ap));
priv = NM_AP_GET_PRIVATE (ap);
if ((ssid == priv->ssid) && ssid == NULL)
return;
/* same SSID */
if ((ssid && priv->ssid) && (ssid->len == priv->ssid->len)) {
if (!memcmp (ssid->data, priv->ssid->data, ssid->len))
return;
}
if (priv->ssid) {
g_byte_array_free (priv->ssid, TRUE);
priv->ssid = NULL;
}
if (ssid) {
priv->ssid = g_byte_array_sized_new (ssid->len);
priv->ssid->len = ssid->len;
memcpy (priv->ssid->data, ssid->data, ssid->len);
}
g_object_notify (G_OBJECT (ap), NM_AP_SSID);
}
guint32
nm_ap_get_flags (NMAccessPoint *ap)
{
guint32 flags;
g_return_val_if_fail (NM_IS_AP (ap), NM_802_11_AP_FLAGS_NONE);
g_object_get (ap, NM_AP_FLAGS, &flags, NULL);
return flags;
}
void
nm_ap_set_flags (NMAccessPoint *ap, guint32 flags)
{
NMAccessPointPrivate *priv;
g_return_if_fail (NM_IS_AP (ap));
priv = NM_AP_GET_PRIVATE (ap);
if (priv->flags != flags) {
priv->flags = flags;
g_object_notify (G_OBJECT (ap), NM_AP_FLAGS);
}
}
guint32
nm_ap_get_wpa_flags (NMAccessPoint *ap)
{
guint32 flags;
g_return_val_if_fail (NM_IS_AP (ap), NM_802_11_AP_SEC_NONE);
g_object_get (ap, NM_AP_WPA_FLAGS, &flags, NULL);
return flags;
}
void
nm_ap_set_wpa_flags (NMAccessPoint *ap, guint32 flags)
{
NMAccessPointPrivate *priv;
g_return_if_fail (NM_IS_AP (ap));
priv = NM_AP_GET_PRIVATE (ap);
if (priv->wpa_flags != flags) {
priv->wpa_flags = flags;
g_object_notify (G_OBJECT (ap), NM_AP_WPA_FLAGS);
}
}
guint32
nm_ap_get_rsn_flags (NMAccessPoint *ap)
{
guint32 flags;
g_return_val_if_fail (NM_IS_AP (ap), NM_802_11_AP_SEC_NONE);
g_object_get (ap, NM_AP_RSN_FLAGS, &flags, NULL);
return flags;
}
void
nm_ap_set_rsn_flags (NMAccessPoint *ap, guint32 flags)
{
NMAccessPointPrivate *priv;
g_return_if_fail (NM_IS_AP (ap));
priv = NM_AP_GET_PRIVATE (ap);
if (priv->rsn_flags != flags) {
priv->rsn_flags = flags;
g_object_notify (G_OBJECT (ap), NM_AP_RSN_FLAGS);
}
}
/*
* Get/set functions for address
*
*/
const struct ether_addr * nm_ap_get_address (const NMAccessPoint *ap)
{
g_return_val_if_fail (NM_IS_AP (ap), NULL);
return &NM_AP_GET_PRIVATE (ap)->address;
}
void nm_ap_set_address (NMAccessPoint *ap, const struct ether_addr * addr)
{
NMAccessPointPrivate *priv;
g_return_if_fail (NM_IS_AP (ap));
g_return_if_fail (addr != NULL);
priv = NM_AP_GET_PRIVATE (ap);
if (memcmp (addr, &priv->address, sizeof (priv->address))) {
memcpy (&NM_AP_GET_PRIVATE (ap)->address, addr, sizeof (struct ether_addr));
g_object_notify (G_OBJECT (ap), NM_AP_HW_ADDRESS);
}
}
/*
* Get/set functions for mode (ie Ad-Hoc, Infrastructure, etc)
*
*/
NM80211Mode nm_ap_get_mode (NMAccessPoint *ap)
{
NM80211Mode mode;
g_return_val_if_fail (NM_IS_AP (ap), -1);
g_object_get (ap, NM_AP_MODE, &mode, NULL);
return mode;
}
void nm_ap_set_mode (NMAccessPoint *ap, const NM80211Mode mode)
{
NMAccessPointPrivate *priv;
g_return_if_fail (NM_IS_AP (ap));
if (mode == NM_802_11_MODE_ADHOC || mode == NM_802_11_MODE_INFRA) {
priv = NM_AP_GET_PRIVATE (ap);
if (priv->mode != mode) {
priv->mode = mode;
g_object_notify (G_OBJECT (ap), NM_AP_MODE);
}
} else
nm_log_warn (LOGD_WIFI, "Invalid AP mode '%d'", mode);
}
/*
* Get/set functions for strength
*
*/
gint8 nm_ap_get_strength (NMAccessPoint *ap)
{
gint8 strength;
g_return_val_if_fail (NM_IS_AP (ap), 0);
g_object_get (ap, NM_AP_STRENGTH, &strength, NULL);
return strength;
}
void nm_ap_set_strength (NMAccessPoint *ap, const gint8 strength)
{
NMAccessPointPrivate *priv;
g_return_if_fail (NM_IS_AP (ap));
priv = NM_AP_GET_PRIVATE (ap);
if (priv->strength != strength) {
priv->strength = strength;
g_object_notify (G_OBJECT (ap), NM_AP_STRENGTH);
}
}
/*
* Get/set functions for frequency
*
*/
guint32
nm_ap_get_freq (NMAccessPoint *ap)
{
guint32 freq;
g_return_val_if_fail (NM_IS_AP (ap), 0);
g_object_get (ap, NM_AP_FREQUENCY, &freq, NULL);
return freq;
}
void
nm_ap_set_freq (NMAccessPoint *ap,
const guint32 freq)
{
NMAccessPointPrivate *priv;
g_return_if_fail (NM_IS_AP (ap));
priv = NM_AP_GET_PRIVATE (ap);
if (priv->freq != freq) {
priv->freq = freq;
g_object_notify (G_OBJECT (ap), NM_AP_FREQUENCY);
}
}
/*
* Get/set functions for max bitrate
*
*/
guint32 nm_ap_get_max_bitrate (NMAccessPoint *ap)
{
guint32 rate;
g_return_val_if_fail (NM_IS_AP (ap), 0);
g_object_get (ap, NM_AP_MAX_BITRATE, &rate, NULL);
return rate;
}
void
nm_ap_set_max_bitrate (NMAccessPoint *ap, guint32 bitrate)
{
NMAccessPointPrivate *priv;
g_return_if_fail (NM_IS_AP (ap));
priv = NM_AP_GET_PRIVATE (ap);
if (priv->max_bitrate != bitrate) {
priv->max_bitrate = bitrate;
g_object_notify (G_OBJECT (ap), NM_AP_MAX_BITRATE);
}
}
/*
* Get/Set functions to indicate that an access point is 'fake', ie whether
* or not it was created from scan results
*/
gboolean nm_ap_get_fake (const NMAccessPoint *ap)
{
g_return_val_if_fail (NM_IS_AP (ap), FALSE);
return NM_AP_GET_PRIVATE (ap)->fake;
}
void nm_ap_set_fake (NMAccessPoint *ap, gboolean fake)
{
g_return_if_fail (NM_IS_AP (ap));
NM_AP_GET_PRIVATE (ap)->fake = fake;
}
/*
* Get/Set functions to indicate whether an AP broadcasts its SSID.
*/
gboolean nm_ap_get_broadcast (NMAccessPoint *ap)
{
g_return_val_if_fail (NM_IS_AP (ap), TRUE);
return NM_AP_GET_PRIVATE (ap)->broadcast;
}
void nm_ap_set_broadcast (NMAccessPoint *ap, gboolean broadcast)
{
g_return_if_fail (NM_IS_AP (ap));
NM_AP_GET_PRIVATE (ap)->broadcast = broadcast;
}
/*
* Get/Set functions for how long ago the AP was last seen in a scan.
* APs older than a certain date are dropped from the list.
*
*/
glong nm_ap_get_last_seen (const NMAccessPoint *ap)
{
g_return_val_if_fail (NM_IS_AP (ap), FALSE);
return NM_AP_GET_PRIVATE (ap)->last_seen;
}
void nm_ap_set_last_seen (NMAccessPoint *ap, const glong last_seen)
{
g_return_if_fail (NM_IS_AP (ap));
NM_AP_GET_PRIVATE (ap)->last_seen = last_seen;
}
/*
* Get/Set functions to indicate that an access point is
* user-created, ie whether or not its a network filled with
* information from the user and intended to create a new Ad-Hoc
* wireless network.
*
*/
gboolean nm_ap_get_user_created (const NMAccessPoint *ap)
{
g_return_val_if_fail (NM_IS_AP (ap), FALSE);
return NM_AP_GET_PRIVATE (ap)->user_created;
}
void nm_ap_set_user_created (NMAccessPoint *ap, gboolean user_created)
{
g_return_if_fail (NM_IS_AP (ap));
NM_AP_GET_PRIVATE (ap)->user_created = user_created;
}
/*
* Get/Set functions for user address list
*
* The internal address list is always "owned" by the AP and
* the list returned by nm_ap_get_user_addresses() is a deep copy.
* Likewise, when setting the list, a deep copy is made for the
* ap's actual list.
*
*/
GSList *nm_ap_get_user_addresses (const NMAccessPoint *ap)
{
GSList *new = NULL;
GSList *elt = NULL;
g_return_val_if_fail (NM_IS_AP (ap), NULL);
for (elt = NM_AP_GET_PRIVATE (ap)->user_addresses; elt; elt = g_slist_next (elt))
{
if (elt->data)
new = g_slist_append (new, g_strdup (elt->data));
}
/* Return a _deep__copy_ of the address list */
return new;
}
void nm_ap_set_user_addresses (NMAccessPoint *ap, GSList *list)
{
NMAccessPointPrivate *priv;
GSList *elt = NULL;
GSList *new = NULL;
g_return_if_fail (NM_IS_AP (ap));
priv = NM_AP_GET_PRIVATE (ap);
/* Free existing list */
g_slist_foreach (priv->user_addresses, (GFunc) g_free, NULL);
/* Copy new list and set as our own */
for (elt = list; elt; elt = g_slist_next (elt))
{
if (elt->data)
new = g_slist_append (new, g_ascii_strup (elt->data, -1));
}
priv->user_addresses = new;
}
guint32
nm_ap_add_security_from_ie (guint32 flags,
const guint8 *wpa_ie,
guint32 length)
{
wpa_ie_data * cap_data;
if (!(cap_data = wpa_parse_wpa_ie (wpa_ie, length)))
return NM_802_11_AP_SEC_NONE;
/* Pairwise cipher flags */
if (cap_data->pairwise_cipher & IW_AUTH_CIPHER_WEP40)
flags |= NM_802_11_AP_SEC_PAIR_WEP40;
if (cap_data->pairwise_cipher & IW_AUTH_CIPHER_WEP104)
flags |= NM_802_11_AP_SEC_PAIR_WEP104;
if (cap_data->pairwise_cipher & IW_AUTH_CIPHER_TKIP)
flags |= NM_802_11_AP_SEC_PAIR_TKIP;
if (cap_data->pairwise_cipher & IW_AUTH_CIPHER_CCMP)
flags |= NM_802_11_AP_SEC_PAIR_CCMP;
/* Group cipher flags */
if (cap_data->group_cipher & IW_AUTH_CIPHER_WEP40)
flags |= NM_802_11_AP_SEC_GROUP_WEP40;
if (cap_data->group_cipher & IW_AUTH_CIPHER_WEP104)
flags |= NM_802_11_AP_SEC_GROUP_WEP104;
if (cap_data->group_cipher & IW_AUTH_CIPHER_TKIP)
flags |= NM_802_11_AP_SEC_GROUP_TKIP;
if (cap_data->group_cipher & IW_AUTH_CIPHER_CCMP)
flags |= NM_802_11_AP_SEC_GROUP_CCMP;
if (cap_data->key_mgmt & IW_AUTH_KEY_MGMT_802_1X)
flags |= NM_802_11_AP_SEC_KEY_MGMT_802_1X;
if (cap_data->key_mgmt & IW_AUTH_KEY_MGMT_PSK)
flags |= NM_802_11_AP_SEC_KEY_MGMT_PSK;
g_slice_free (wpa_ie_data, cap_data);
return flags;
}
gboolean
nm_ap_check_compatible (NMAccessPoint *self,
NMConnection *connection)
{
NMAccessPointPrivate *priv;
NMSettingWireless *s_wireless;
NMSettingWirelessSecurity *s_wireless_sec;
const char *mode;
const char *band;
const GByteArray *bssid;
guint32 channel;
g_return_val_if_fail (NM_IS_AP (self), FALSE);
g_return_val_if_fail (NM_IS_CONNECTION (connection), FALSE);
priv = NM_AP_GET_PRIVATE (self);
s_wireless = NM_SETTING_WIRELESS (nm_connection_get_setting (connection, NM_TYPE_SETTING_WIRELESS));
if (s_wireless == NULL)
return FALSE;
if (!nm_utils_same_ssid (nm_setting_wireless_get_ssid (s_wireless), priv->ssid, TRUE))
return FALSE;
bssid = nm_setting_wireless_get_bssid (s_wireless);
if (bssid && memcmp (bssid->data, &priv->address, ETH_ALEN))
return FALSE;
mode = nm_setting_wireless_get_mode (s_wireless);
if (mode) {
if (!strcmp (mode, "infrastructure") && (priv->mode != NM_802_11_MODE_INFRA))
return FALSE;
if (!strcmp (mode, "adhoc") && (priv->mode != NM_802_11_MODE_ADHOC))
return FALSE;
}
band = nm_setting_wireless_get_band (s_wireless);
if (band) {
if (!strcmp (band, "a")) {
if (priv->freq < 4915 || priv->freq > 5825)
return FALSE;
} else if (!strcmp (band, "bg")) {
if (priv->freq < 2412 || priv->freq > 2484)
return FALSE;
}
}
channel = nm_setting_wireless_get_channel (s_wireless);
if (channel) {
guint32 ap_chan = freq_to_channel (priv->freq);
if (channel != ap_chan)
return FALSE;
}
s_wireless_sec = (NMSettingWirelessSecurity *) nm_connection_get_setting (connection,
NM_TYPE_SETTING_WIRELESS_SECURITY);
return nm_setting_wireless_ap_security_compatible (s_wireless,
s_wireless_sec,
nm_ap_get_flags (self),
nm_ap_get_wpa_flags (self),
nm_ap_get_rsn_flags (self),
nm_ap_get_mode (self));
}
static gboolean
capabilities_compatible (guint32 a_flags, guint32 b_flags)
{
if (a_flags == b_flags)
return TRUE;
/* Make sure there's a common key management method */
if (!((a_flags & 0x300) & (b_flags & 0x300)))
return FALSE;
/* Ensure common pairwise ciphers */
if (!((a_flags & 0xF) & (b_flags & 0xF)))
return FALSE;
/* Ensure common group ciphers */
if (!((a_flags & 0xF0) & (b_flags & 0xF0)))
return FALSE;
return TRUE;
}
NMAccessPoint *
nm_ap_match_in_list (NMAccessPoint *find_ap,
GSList *ap_list,
gboolean strict_match)
{
GSList *iter;
g_return_val_if_fail (find_ap != NULL, NULL);
for (iter = ap_list; iter; iter = g_slist_next (iter)) {
NMAccessPoint * list_ap = NM_AP (iter->data);
const GByteArray * list_ssid = nm_ap_get_ssid (list_ap);
const struct ether_addr * list_addr = nm_ap_get_address (list_ap);
const GByteArray * find_ssid = nm_ap_get_ssid (find_ap);
const struct ether_addr * find_addr = nm_ap_get_address (find_ap);
/* SSID match; if both APs are hiding their SSIDs,
* let matching continue on BSSID and other properties
*/
if ( (!list_ssid && find_ssid)
|| (list_ssid && !find_ssid)
|| !nm_utils_same_ssid (list_ssid, find_ssid, TRUE))
continue;
/* BSSID match */
if ( (strict_match || nm_ethernet_address_is_valid (find_addr))
&& nm_ethernet_address_is_valid (list_addr)
&& memcmp (list_addr->ether_addr_octet,
find_addr->ether_addr_octet,
ETH_ALEN) != 0) {
continue;
}
/* mode match */
if (nm_ap_get_mode (list_ap) != nm_ap_get_mode (find_ap))
continue;
/* Frequency match */
if (nm_ap_get_freq (list_ap) != nm_ap_get_freq (find_ap))
continue;
/* AP flags */
if (nm_ap_get_flags (list_ap) != nm_ap_get_flags (find_ap))
continue;
if (strict_match) {
if (nm_ap_get_wpa_flags (list_ap) != nm_ap_get_wpa_flags (find_ap))
continue;
if (nm_ap_get_rsn_flags (list_ap) != nm_ap_get_rsn_flags (find_ap))
continue;
} else {
guint32 list_wpa_flags = nm_ap_get_wpa_flags (list_ap);
guint32 find_wpa_flags = nm_ap_get_wpa_flags (find_ap);
guint32 list_rsn_flags = nm_ap_get_rsn_flags (list_ap);
guint32 find_rsn_flags = nm_ap_get_rsn_flags (find_ap);
/* Just ensure that there is overlap in the capabilities */
if ( !capabilities_compatible (list_wpa_flags, find_wpa_flags)
&& !capabilities_compatible (list_rsn_flags, find_rsn_flags))
continue;
}
return list_ap;
}
return NULL;
}
struct cf_pair {
guint32 chan;
guint32 freq;
};
static struct cf_pair a_table[] = {
/* A band */
{ 7, 5035 },
{ 8, 5040 },
{ 9, 5045 },
{ 11, 5055 },
{ 12, 5060 },
{ 16, 5080 },
{ 34, 5170 },
{ 36, 5180 },
{ 38, 5190 },
{ 40, 5200 },
{ 42, 5210 },
{ 44, 5220 },
{ 46, 5230 },
{ 48, 5240 },
{ 50, 5250 },
{ 52, 5260 },
{ 56, 5280 },
{ 58, 5290 },
{ 60, 5300 },
{ 64, 5320 },
{ 100, 5500 },
{ 104, 5520 },
{ 108, 5540 },
{ 112, 5560 },
{ 116, 5580 },
{ 120, 5600 },
{ 124, 5620 },
{ 128, 5640 },
{ 132, 5660 },
{ 136, 5680 },
{ 140, 5700 },
{ 149, 5745 },
{ 152, 5760 },
{ 153, 5765 },
{ 157, 5785 },
{ 160, 5800 },
{ 161, 5805 },
{ 165, 5825 },
{ 183, 4915 },
{ 184, 4920 },
{ 185, 4925 },
{ 187, 4935 },
{ 188, 4945 },
{ 192, 4960 },
{ 196, 4980 },
{ 0, -1 }
};
static struct cf_pair bg_table[] = {
/* B/G band */
{ 1, 2412 },
{ 2, 2417 },
{ 3, 2422 },
{ 4, 2427 },
{ 5, 2432 },
{ 6, 2437 },
{ 7, 2442 },
{ 8, 2447 },
{ 9, 2452 },
{ 10, 2457 },
{ 11, 2462 },
{ 12, 2467 },
{ 13, 2472 },
{ 14, 2484 },
{ 0, -1 }
};
guint32
freq_to_channel (guint32 freq)
{
int i = 0;
if (freq > 4900) {
while (a_table[i].chan && (a_table[i].freq != freq))
i++;
return a_table[i].chan;
} else {
while (bg_table[i].chan && (bg_table[i].freq != freq))
i++;
return bg_table[i].chan;
}
return 0;
}
guint32
channel_to_freq (guint32 channel, const char *band)
{
int i = 0;
if (!strcmp (band, "a")) {
while (a_table[i].chan && (a_table[i].chan != channel))
i++;
return a_table[i].freq;
} else if (!strcmp (band, "bg")) {
while (bg_table[i].chan && (bg_table[i].chan != channel))
i++;
return bg_table[i].freq;
}
return 0;
}
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