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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <gio/gio.h>
#include "DbusWifiScanner.h"
#include "nsWifiAccessPoint.h"
#include "mozilla/GUniquePtr.h"
#include "mozilla/RefPtr.h"
#include "mozilla/GRefPtr.h"
namespace mozilla {
WifiScannerImpl::WifiScannerImpl() { MOZ_COUNT_CTOR(WifiScannerImpl); }
WifiScannerImpl::~WifiScannerImpl() { MOZ_COUNT_DTOR(WifiScannerImpl); }
nsresult WifiScannerImpl::GetAccessPointsFromWLAN(
AccessPointArray& aAccessPoints) {
RefPtr<GDBusProxy> proxy = dont_AddRef(g_dbus_proxy_new_for_bus_sync(
G_BUS_TYPE_SYSTEM, G_DBUS_PROXY_FLAGS_NONE, nullptr,
"org.freedesktop.NetworkManager", "/org/freedesktop/NetworkManager",
"org.freedesktop.NetworkManager", nullptr, nullptr));
if (!proxy) {
return NS_ERROR_FAILURE;
}
RefPtr<GVariant> result =
dont_AddRef(g_dbus_proxy_get_cached_property(proxy, "Devices"));
if (!result ||
!g_variant_is_of_type(result, G_VARIANT_TYPE_OBJECT_PATH_ARRAY)) {
return NS_ERROR_FAILURE;
}
gsize num = g_variant_n_children(result);
for (gsize i = 0; i < num; i++) {
const char* devicePath =
g_variant_get_string(g_variant_get_child_value(result, i), nullptr);
if (!devicePath || !AddDevice(devicePath, aAccessPoints)) {
return NS_ERROR_FAILURE;
}
}
return NS_OK;
}
bool WifiScannerImpl::AddDevice(const char* aDevicePath,
AccessPointArray& aAccessPoints) {
RefPtr<GDBusProxy> proxy = dont_AddRef(g_dbus_proxy_new_for_bus_sync(
G_BUS_TYPE_SYSTEM, G_DBUS_PROXY_FLAGS_NONE, nullptr,
"org.freedesktop.NetworkManager", aDevicePath,
"org.freedesktop.NetworkManager.Device", nullptr, nullptr));
if (!proxy) {
return false;
}
RefPtr<GVariant> deviceType =
dont_AddRef(g_dbus_proxy_get_cached_property(proxy, "DeviceType"));
if (!deviceType || !g_variant_is_of_type(deviceType, G_VARIANT_TYPE_UINT32)) {
return false;
}
// http://projects.gnome.org/NetworkManager/developers/api/07/spec-07.html
// Refer to NM_DEVICE_TYPE_WIFI under NM_DEVICE_TYPE.
const uint32_t NM_DEVICE_TYPE_WIFI = 2;
if (g_variant_get_uint32(deviceType) != NM_DEVICE_TYPE_WIFI) {
// Don't probe non-wifi devices
return true;
}
proxy = dont_AddRef(g_dbus_proxy_new_for_bus_sync(
G_BUS_TYPE_SYSTEM, G_DBUS_PROXY_FLAGS_NONE, nullptr,
"org.freedesktop.NetworkManager", aDevicePath,
"org.freedesktop.NetworkManager.Device.Wireless", nullptr, nullptr));
if (!proxy) {
return false;
}
RefPtr<GVariant> points =
dont_AddRef(g_dbus_proxy_get_cached_property(proxy, "AccessPoints"));
if (!points ||
!g_variant_is_of_type(points, G_VARIANT_TYPE_OBJECT_PATH_ARRAY)) {
return false;
}
gsize num = g_variant_n_children(points);
for (gsize i = 0; i < num; i++) {
const char* ap =
g_variant_get_string(g_variant_get_child_value(points, i), nullptr);
if (!ap || !AddAPProperties(ap, aAccessPoints)) {
return false;
}
}
return true;
}
bool WifiScannerImpl::AddAPProperties(const char* aApPath,
AccessPointArray& aAccessPoints) {
RefPtr<GDBusProxy> proxy = dont_AddRef(g_dbus_proxy_new_for_bus_sync(
G_BUS_TYPE_SYSTEM, G_DBUS_PROXY_FLAGS_NONE, nullptr,
"org.freedesktop.NetworkManager", aApPath,
"org.freedesktop.NetworkManager.AccessPoint", nullptr, nullptr));
if (!proxy) {
return false;
}
RefPtr<nsWifiAccessPoint> ap = new nsWifiAccessPoint();
RefPtr<GVariant> ssid =
dont_AddRef(g_dbus_proxy_get_cached_property(proxy, "Ssid"));
if (!ssid || !g_variant_is_of_type(ssid, G_VARIANT_TYPE_BYTESTRING)) {
return false;
}
const uint32_t MAX_SSID_LEN = 32;
gsize len = 0;
const char* ssidString = static_cast<const char*>(
g_variant_get_fixed_array(ssid, &len, sizeof(guint8)));
if (ssidString && len && len <= MAX_SSID_LEN) {
ap->setSSID(ssidString, len);
}
RefPtr<GVariant> hwAddress =
dont_AddRef(g_dbus_proxy_get_cached_property(proxy, "HwAddress"));
if (!hwAddress || !g_variant_is_of_type(hwAddress, G_VARIANT_TYPE_STRING)) {
return false;
}
GUniquePtr<gchar> address(g_variant_dup_string(hwAddress, nullptr));
SetMac(address.get(), ap);
RefPtr<GVariant> st =
dont_AddRef(g_dbus_proxy_get_cached_property(proxy, "Strength"));
if (!st || !g_variant_is_of_type(st, G_VARIANT_TYPE_BYTE)) {
return false;
}
uint8_t strength = g_variant_get_byte(st); // in %
int signal_strength = (strength / 2) - 100; // strength to dB
ap->setSignal(signal_strength);
aAccessPoints.AppendElement(ap);
return true;
}
bool WifiScannerImpl::SetMac(char* aHwAddress, nsWifiAccessPoint* aAp) {
// hwAddress format is XX:XX:XX:XX:XX:XX. Need to convert to XXXXXX format.
const uint32_t MAC_LEN = 6;
uint8_t macAddress[MAC_LEN];
char* savedPtr = nullptr;
char* token = strtok_r(aHwAddress, ":", &savedPtr);
for (unsigned char& macAddres : macAddress) {
if (!token) {
return false;
}
macAddres = strtoul(token, nullptr, 16);
token = strtok_r(nullptr, ":", &savedPtr);
}
aAp->setMac(macAddress);
return true;
}
} // namespace mozilla
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