connman-gnome: fix DHCP segfault

In networks that don't have a DHCP server configured, ipv4 address
allocation fails and the ipv4 structure doesn't get populated.
The patch checks this case also.

[YOCTO #3945]

(From OE-Core rev: 2e3bff33f4ebeb6ac2272ab377d00416ef1af83f)

Signed-off-by: Mihai Prica <mihai.prica@intel.com>
Signed-off-by: Emilia Ciobanu <emilia.maria.silvia.ciobanu at intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-connectivity/connman/connman-gnome/null_check_for_ipv4_config.patch

@@ -0,0 +1,36 @@
+In networks that don't have a DHCP server configured, ipv4 address
+allocation fails and the ipv4 structure doesn't get populated. When
+the GUI is trying to read the ipv4_config.method field to see whether
+it contains "dhcp" string, a segmentation fault is generated.
+
+Ethernet manual configuration behavior remains unchanged after this fix.
+
+Upstream-Status: Pending
+
+Signed-off-by: Emilia Ciobanu <emilia.maria.silvia.ciobanu@intel.com>
+Index: git/properties/ethernet.c
+===================================================================
+--- git.orig/properties/ethernet.c
++++ git/properties/ethernet.c
+@@ -194,7 +194,7 @@ void add_ethernet_service(GtkWidget *mai
+
+ 	data->button = button;
+
+-	if (g_str_equal(ipv4_config.method, "dhcp") == TRUE)
++	if (!ipv4_config.method || g_str_equal(ipv4_config.method, "dhcp") == TRUE)
+ 		update_ethernet_ipv4(data, CONNMAN_POLICY_DHCP);
+ 	else
+ 		update_ethernet_ipv4(data, CONNMAN_POLICY_MANUAL);
+Index: git/properties/wifi.c
+===================================================================
+--- git.orig/properties/wifi.c
++++ git/properties/wifi.c
+@@ -230,7 +230,7 @@ static void wifi_ipconfig(GtkWidget *tab
+
+ 	data->ipv4_config = ipv4_config;
+
+-	if (g_str_equal(ipv4_config.method, "dhcp") == TRUE)
++	if (!ipv4_config.method || g_str_equal(ipv4_config.method, "dhcp") == TRUE)
+ 		update_wifi_ipv4(data, CONNMAN_POLICY_DHCP);
+ 	else
+ 		update_wifi_ipv4(data, CONNMAN_POLICY_MANUAL);

meta/recipes-connectivity/connman/connman-gnome_0.7.bb

@@ -12,6 +12,7 @@ DEPENDS = "gtk+ dbus-glib intltool-native"
 SRCREV = "cf3c325b23dae843c5499a113591cfbc98acb143"
 SRC_URI = "git://github.com/connectivity/connman-gnome.git;protocol=git \
 	   file://0001-Removed-icon-from-connman-gnome-about-applet.patch \
+       file://null_check_for_ipv4_config.patch \
 	   file://images/* \
           "