Fix crash in case tdelibs is built without support for NetworkManager.

Fix crash in case of unsuccessful search for device.
This resolves issue #8.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
(cherry picked from commit 88cc44bac49ac83acb46c439b405b126b04c7ae7)

1 files changed, 58 insertions, 15 deletions

diff --git a/tdenetworkmanager/src/tdenetman-wireless_network.cpp b/tdenetworkmanager/src/tdenetman-wireless_network.cpp
index f071f4d..5b13c52 100644
--- a/tdenetworkmanager/src/tdenetman-wireless_network.cpp
+++ b/tdenetworkmanager/src/tdenetman-wireless_network.cpp
@@ -90,13 +90,20 @@ bool WirelessNetwork::contains(const TDEMACAddress ap)
 		dev = dynamic_cast<TDENetworkDevice*>(hwdevices->findByUniqueID(d->aps[ap]));
 		if (dev) {
 			TDENetworkConnectionManager* deviceConnMan = dev->connectionManager();
-			apInfo = deviceConnMan->findAccessPointByBSSID(ap);
+			if (deviceConnMan)
+			{
+				apInfo = deviceConnMan->findAccessPointByBSSID(ap);
+			}
 		}
 		else if (d->aps[ap] == "") {
-			apInfo = nm->findAccessPointByBSSID(ap);
+			if (nm)
+			{
+				apInfo = nm->findAccessPointByBSSID(ap);
+			}
 		}
 	}
-	else {
+	else if (nm)
+	{
 		apInfo = nm->findAccessPointByBSSID(ap);
 	}
 
@@ -137,10 +144,16 @@ const TQByteArray WirelessNetwork::getSsid() const
 		TDENetworkWiFiAPInfo* apInfo = NULL;
 		if (dev) {
 			TDENetworkConnectionManager* deviceConnMan = dev->connectionManager();
-			apInfo = deviceConnMan->findAccessPointByBSSID(d->aps.begin().key());
+			if (deviceConnMan)
+			{
+				apInfo = deviceConnMan->findAccessPointByBSSID(d->aps.begin().key());
+			}
 		}
 		else if (d->aps.begin().data() == "") {
-			apInfo = nm->findAccessPointByBSSID(d->aps.begin().key());
+			if (nm)
+			{
+				apInfo = nm->findAccessPointByBSSID(d->aps.begin().key());
+			}
 		}
 
 		if (apInfo) {
@@ -164,10 +177,16 @@ TQString WirelessNetwork::getDisplaySsid() const
 		TDENetworkWiFiAPInfo* apInfo = NULL;
 		if (dev) {
 			TDENetworkConnectionManager* deviceConnMan = dev->connectionManager();
-			apInfo = deviceConnMan->findAccessPointByBSSID(d->aps.begin().key());
+			if (deviceConnMan)
+			{
+				apInfo = deviceConnMan->findAccessPointByBSSID(d->aps.begin().key());
+			}
 		}
 		else if (d->aps.begin().data() == "") {
-			apInfo = nm->findAccessPointByBSSID(d->aps.begin().key());
+			if (nm)
+			{
+				apInfo = nm->findAccessPointByBSSID(d->aps.begin().key());
+			}
 		}
 
 		if (apInfo) {
@@ -192,10 +211,16 @@ TDENetworkWiFiAPFlags::TDENetworkWiFiAPFlags WirelessNetwork::getFlags() const
 		TDENetworkWiFiAPInfo* apInfo = NULL;
 		if (dev) {
 			TDENetworkConnectionManager* deviceConnMan = dev->connectionManager();
-			apInfo = deviceConnMan->findAccessPointByBSSID(it.key());
+			if (deviceConnMan)
+			{
+				apInfo = deviceConnMan->findAccessPointByBSSID(it.key());
+			}
 		}
 		else if (it.data() == "") {
-			apInfo = nm->findAccessPointByBSSID(it.key());
+			if (nm)
+			{
+				apInfo = nm->findAccessPointByBSSID(it.key());
+			}
 		}
 
 		if (apInfo) {
@@ -217,10 +242,16 @@ TDENetworkWiFiAPFlags::TDENetworkWiFiAPFlags WirelessNetwork::getWpaFlags() cons
 		TDENetworkWiFiAPInfo* apInfo = NULL;
 		if (dev) {
 			TDENetworkConnectionManager* deviceConnMan = dev->connectionManager();
-			apInfo = deviceConnMan->findAccessPointByBSSID(it.key());
+			if (deviceConnMan)
+			{
+				apInfo = deviceConnMan->findAccessPointByBSSID(it.key());
+			}
 		}
 		else if (it.data() == "") {
-			apInfo = nm->findAccessPointByBSSID(it.key());
+			if (nm)
+			{
+				apInfo = nm->findAccessPointByBSSID(it.key());
+			}
 		}
 
 		if (apInfo) {
@@ -241,10 +272,16 @@ TDENetworkWiFiAPFlags::TDENetworkWiFiAPFlags WirelessNetwork::getRsnFlags() cons
 		TDENetworkWiFiAPInfo* apInfo = NULL;
 		if (dev) {
 			TDENetworkConnectionManager* deviceConnMan = dev->connectionManager();
-			apInfo = deviceConnMan->findAccessPointByBSSID(it.key());
+			if (deviceConnMan)
+			{
+				apInfo = deviceConnMan->findAccessPointByBSSID(it.key());
+			}
 		}
 		else if (it.data() == "") {
-			apInfo = nm->findAccessPointByBSSID(it.key());
+			if (nm)
+			{
+				apInfo = nm->findAccessPointByBSSID(it.key());
+			}
 		}
 
 		if (apInfo) {
@@ -269,10 +306,16 @@ TQ_UINT8 WirelessNetwork::getStrength() const
 		TDENetworkWiFiAPInfo* apInfo = NULL;
 		if (dev) {
 			TDENetworkConnectionManager* deviceConnMan = dev->connectionManager();
-			apInfo = deviceConnMan->findAccessPointByBSSID(it.key());
+			if (deviceConnMan)
+			{
+				apInfo = deviceConnMan->findAccessPointByBSSID(it.key());
+			}
 		}
 		else if (it.data() == "") {
-			apInfo = nm->findAccessPointByBSSID(it.key());
+			if (nm)
+			{
+				apInfo = nm->findAccessPointByBSSID(it.key());
+			}
 		}
 
 		if (apInfo) {