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-rw-r--r--netwerk/wifi/nsWifiScannerDBus.cpp337
1 files changed, 337 insertions, 0 deletions
diff --git a/netwerk/wifi/nsWifiScannerDBus.cpp b/netwerk/wifi/nsWifiScannerDBus.cpp
new file mode 100644
index 000000000..182553e18
--- /dev/null
+++ b/netwerk/wifi/nsWifiScannerDBus.cpp
@@ -0,0 +1,337 @@
+/* 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 "nsWifiScannerDBus.h"
+#include "mozilla/ipc/DBusMessageRefPtr.h"
+#include "nsWifiAccessPoint.h"
+
+namespace mozilla {
+
+nsWifiScannerDBus::nsWifiScannerDBus(nsCOMArray<nsWifiAccessPoint> *aAccessPoints)
+: mAccessPoints(aAccessPoints)
+{
+ MOZ_ASSERT(mAccessPoints);
+
+ mConnection =
+ already_AddRefed<DBusConnection>(dbus_bus_get(DBUS_BUS_SYSTEM, nullptr));
+ MOZ_ASSERT(mConnection);
+ dbus_connection_set_exit_on_disconnect(mConnection, false);
+
+ MOZ_COUNT_CTOR(nsWifiScannerDBus);
+}
+
+nsWifiScannerDBus::~nsWifiScannerDBus()
+{
+ MOZ_COUNT_DTOR(nsWifiScannerDBus);
+}
+
+nsresult
+nsWifiScannerDBus::Scan()
+{
+ return SendMessage("org.freedesktop.NetworkManager",
+ "/org/freedesktop/NetworkManager",
+ "GetDevices");
+}
+
+nsresult
+nsWifiScannerDBus::SendMessage(const char* aInterface,
+ const char* aPath,
+ const char* aFuncCall)
+{
+ RefPtr<DBusMessage> msg = already_AddRefed<DBusMessage>(
+ dbus_message_new_method_call("org.freedesktop.NetworkManager",
+ aPath, aInterface, aFuncCall));
+ if (!msg) {
+ return NS_ERROR_FAILURE;
+ }
+
+ DBusMessageIter argsIter;
+ dbus_message_iter_init_append(msg, &argsIter);
+
+ if (!strcmp(aFuncCall, "Get")) {
+ const char* paramInterface = "org.freedesktop.NetworkManager.Device";
+ if (!dbus_message_iter_append_basic(&argsIter, DBUS_TYPE_STRING,
+ &paramInterface)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ const char* paramDeviceType = "DeviceType";
+ if (!dbus_message_iter_append_basic(&argsIter, DBUS_TYPE_STRING,
+ &paramDeviceType)) {
+ return NS_ERROR_FAILURE;
+ }
+ } else if (!strcmp(aFuncCall, "GetAll")) {
+ const char* param = "";
+ if (!dbus_message_iter_append_basic(&argsIter, DBUS_TYPE_STRING, &param)) {
+ return NS_ERROR_FAILURE;
+ }
+ }
+
+ DBusError err;
+ dbus_error_init(&err);
+
+ // http://dbus.freedesktop.org/doc/api/html/group__DBusConnection.html
+ // Refer to function dbus_connection_send_with_reply_and_block.
+ const uint32_t DBUS_DEFAULT_TIMEOUT = -1;
+ RefPtr<DBusMessage> reply = already_AddRefed<DBusMessage>(
+ dbus_connection_send_with_reply_and_block(mConnection, msg,
+ DBUS_DEFAULT_TIMEOUT, &err));
+ if (dbus_error_is_set(&err)) {
+ dbus_error_free(&err);
+
+ // In the GetAccessPoints case, if there are no access points, error is set.
+ // We don't want to error out here.
+ if (!strcmp(aFuncCall, "GetAccessPoints")) {
+ return NS_OK;
+ }
+ return NS_ERROR_FAILURE;
+ }
+
+ nsresult rv;
+ if (!strcmp(aFuncCall, "GetDevices")) {
+ rv = IdentifyDevices(reply);
+ } else if (!strcmp(aFuncCall, "Get")) {
+ rv = IdentifyDeviceType(reply, aPath);
+ } else if (!strcmp(aFuncCall, "GetAccessPoints")) {
+ rv = IdentifyAccessPoints(reply);
+ } else if (!strcmp(aFuncCall, "GetAll")) {
+ rv = IdentifyAPProperties(reply);
+ } else {
+ rv = NS_ERROR_FAILURE;
+ }
+ return rv;
+}
+
+nsresult
+nsWifiScannerDBus::IdentifyDevices(DBusMessage* aMsg)
+{
+ DBusMessageIter iter;
+ nsresult rv = GetDBusIterator(aMsg, &iter);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ const char* devicePath;
+ do {
+ if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_OBJECT_PATH) {
+ return NS_ERROR_FAILURE;
+ }
+
+ dbus_message_iter_get_basic(&iter, &devicePath);
+ if (!devicePath) {
+ return NS_ERROR_FAILURE;
+ }
+
+ rv = SendMessage("org.freedesktop.DBus.Properties", devicePath, "Get");
+ NS_ENSURE_SUCCESS(rv, rv);
+ } while (dbus_message_iter_next(&iter));
+
+ return NS_OK;
+}
+
+nsresult
+nsWifiScannerDBus::IdentifyDeviceType(DBusMessage* aMsg, const char* aDevicePath)
+{
+ DBusMessageIter args;
+ if (!dbus_message_iter_init(aMsg, &args)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ if (dbus_message_iter_get_arg_type(&args) != DBUS_TYPE_VARIANT) {
+ return NS_ERROR_FAILURE;
+ }
+
+ DBusMessageIter variantIter;
+ dbus_message_iter_recurse(&args, &variantIter);
+ if (dbus_message_iter_get_arg_type(&variantIter) != DBUS_TYPE_UINT32) {
+ return NS_ERROR_FAILURE;
+ }
+
+ uint32_t deviceType;
+ dbus_message_iter_get_basic(&variantIter, &deviceType);
+
+ // 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;
+ nsresult rv = NS_OK;
+ if (deviceType == NM_DEVICE_TYPE_WIFI) {
+ rv = SendMessage("org.freedesktop.NetworkManager.Device.Wireless",
+ aDevicePath, "GetAccessPoints");
+ }
+
+ return rv;
+}
+
+nsresult
+nsWifiScannerDBus::IdentifyAccessPoints(DBusMessage* aMsg)
+{
+ DBusMessageIter iter;
+ nsresult rv = GetDBusIterator(aMsg, &iter);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ const char* path;
+ do {
+ if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_OBJECT_PATH) {
+ return NS_ERROR_FAILURE;
+ }
+ dbus_message_iter_get_basic(&iter, &path);
+ if (!path) {
+ return NS_ERROR_FAILURE;
+ }
+
+ rv = SendMessage("org.freedesktop.DBus.Properties", path, "GetAll");
+ NS_ENSURE_SUCCESS(rv, rv);
+ } while (dbus_message_iter_next(&iter));
+
+ return NS_OK;
+}
+
+nsresult
+nsWifiScannerDBus::IdentifyAPProperties(DBusMessage* aMsg)
+{
+ DBusMessageIter arr;
+ nsresult rv = GetDBusIterator(aMsg, &arr);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ RefPtr<nsWifiAccessPoint> ap = new nsWifiAccessPoint();
+ do {
+ DBusMessageIter dict;
+ dbus_message_iter_recurse(&arr, &dict);
+
+ do {
+ const char* key;
+ dbus_message_iter_get_basic(&dict, &key);
+ if (!key) {
+ return NS_ERROR_FAILURE;
+ }
+ dbus_message_iter_next(&dict);
+
+ DBusMessageIter variant;
+ dbus_message_iter_recurse(&dict, &variant);
+
+ if (!strncmp(key, "Ssid", strlen("Ssid"))) {
+ nsresult rv = StoreSsid(&variant, ap);
+ NS_ENSURE_SUCCESS(rv, rv);
+ break;
+ }
+
+ if (!strncmp(key, "HwAddress", strlen("HwAddress"))) {
+ nsresult rv = SetMac(&variant, ap);
+ NS_ENSURE_SUCCESS(rv, rv);
+ break;
+ }
+
+ if (!strncmp(key, "Strength", strlen("Strength"))) {
+ if (dbus_message_iter_get_arg_type(&variant) != DBUS_TYPE_BYTE) {
+ return NS_ERROR_FAILURE;
+ }
+
+ uint8_t strength;
+ dbus_message_iter_get_basic(&variant, &strength);
+ ap->setSignal(strength);
+ }
+ } while (dbus_message_iter_next(&dict));
+ } while (dbus_message_iter_next(&arr));
+
+ mAccessPoints->AppendObject(ap);
+ return NS_OK;
+}
+
+nsresult
+nsWifiScannerDBus::StoreSsid(DBusMessageIter* aVariant, nsWifiAccessPoint* aAp)
+{
+ if (dbus_message_iter_get_arg_type(aVariant) != DBUS_TYPE_ARRAY) {
+ return NS_ERROR_FAILURE;
+ }
+
+ DBusMessageIter variantMember;
+ dbus_message_iter_recurse(aVariant, &variantMember);
+
+ const uint32_t MAX_SSID_LEN = 32;
+ char ssid[MAX_SSID_LEN];
+ memset(ssid, '\0', ArrayLength(ssid));
+ uint32_t i = 0;
+ do {
+ if (dbus_message_iter_get_arg_type(&variantMember) != DBUS_TYPE_BYTE) {
+ return NS_ERROR_FAILURE;
+ }
+
+ dbus_message_iter_get_basic(&variantMember, &ssid[i]);
+ i++;
+ } while (dbus_message_iter_next(&variantMember) && i < MAX_SSID_LEN);
+
+ aAp->setSSID(ssid, i);
+ return NS_OK;
+}
+
+nsresult
+nsWifiScannerDBus::SetMac(DBusMessageIter* aVariant, nsWifiAccessPoint* aAp)
+{
+ if (dbus_message_iter_get_arg_type(aVariant) != DBUS_TYPE_STRING) {
+ return NS_ERROR_FAILURE;
+ }
+
+ // hwAddress format is XX:XX:XX:XX:XX:XX. Need to convert to XXXXXX format.
+ char* hwAddress;
+ dbus_message_iter_get_basic(aVariant, &hwAddress);
+ if (!hwAddress) {
+ return NS_ERROR_FAILURE;
+ }
+
+ const uint32_t MAC_LEN = 6;
+ uint8_t macAddress[MAC_LEN];
+ char* token = strtok(hwAddress, ":");
+ for (uint32_t i = 0; i < ArrayLength(macAddress); i++) {
+ if (!token) {
+ return NS_ERROR_FAILURE;
+ }
+ macAddress[i] = strtoul(token, nullptr, 16);
+ token = strtok(nullptr, ":");
+ }
+ aAp->setMac(macAddress);
+ return NS_OK;
+}
+
+nsresult
+nsWifiScannerDBus::GetDBusIterator(DBusMessage* aMsg,
+ DBusMessageIter* aIterArray)
+{
+ DBusMessageIter iter;
+ if (!dbus_message_iter_init(aMsg, &iter)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY) {
+ return NS_ERROR_FAILURE;
+ }
+
+ dbus_message_iter_recurse(&iter, aIterArray);
+ return NS_OK;
+}
+
+} // mozilla
+
+nsresult
+nsWifiMonitor::DoScan()
+{
+ nsCOMArray<nsWifiAccessPoint> accessPoints;
+ mozilla::nsWifiScannerDBus wifiScanner(&accessPoints);
+ nsCOMArray<nsWifiAccessPoint> lastAccessPoints;
+
+ while (mKeepGoing) {
+ accessPoints.Clear();
+ nsresult rv = wifiScanner.Scan();
+ NS_ENSURE_SUCCESS(rv, rv);
+ bool accessPointsChanged = !AccessPointsEqual(accessPoints,
+ lastAccessPoints);
+ ReplaceArray(lastAccessPoints, accessPoints);
+
+ rv = CallWifiListeners(lastAccessPoints, accessPointsChanged);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ LOG(("waiting on monitor\n"));
+ mozilla::ReentrantMonitorAutoEnter mon(mReentrantMonitor);
+ mon.Wait(PR_SecondsToInterval(kDefaultWifiScanInterval));
+ }
+
+ return NS_OK;
+}