tui: fix crash creating Wi-Fi connection

When adding a new Wi-Fi connection, nmtui crashes.
Usually, a verified Wi-Fi connection always has key_mgnt set.
However, the client doesn't have the luxury to assume that all
connections verify. Especially, while creating a new connection.

    #0  0x00007ffff4fe5baa in __strcmp_sse2_unaligned () at ../sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S:31
    #1  0x000055555556654c in get_security_type (binding=0x5555557d1cf0) at clients/tui/nm-editor-bindings.c:591
    #2  0x000055555556593b in wireless_security_changed (object=0x0, pspec=0x0, user_data=0x5555557d1cf0) at clients/tui/nm-editor-bindings.c:628
    #3  0x000055555556536d in nm_editor_bind_wireless_security_method (connection=0x5555558028e0, s_wsec=0x555555892eb0 [NMSettingWirelessSecurity], target=0x555555935e10, target_property=0x55555559311b "active-id", flags=(G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE)) at clients/tui/nm-editor-bindings.c:796
    #4  0x000055555557a3aa in nmt_page_wifi_constructed (object=0x5555559349e0 [NmtPageWifi]) at clients/tui/nmt-page-wifi.c:338
    #5  0x00007ffff5e6b670 in g_object_new_internal (class=class@entry=0x5555557c14c0, params=params@entry=0x7fffffffc440, n_params=n_params@entry=2) at gobject.c:1823
    #6  0x00007ffff5e6d24d in g_object_new_valist (object_type=object_type@entry=93824994775616, first_property_name=first_property_name@entry=0x5555555920c6 "connection", var_args=var_args@entry=0x7fffffffc590) at gobject.c:2042
    #7  0x00007ffff5e6d691 in g_object_new (object_type=93824994775616, first_property_name=0x5555555920c6 "connection") at gobject.c:1626
    #8  0x000055555557985a in nmt_page_wifi_new (conn=0x5555558028e0, deventry=0x5555557d15e0 [NmtDeviceEntry]) at clients/tui/nmt-page-wifi.c:45
    #9  0x000055555556f7e2 in nmt_editor_constructed (object=0x555555922af0 [NmtEditor]) at clients/tui/nmt-editor.c:374
    #10 0x00007ffff5e6b670 in g_object_new_internal (class=class@entry=0x555555932750, params=params@entry=0x7fffffffcac0, n_params=n_params@entry=4) at gobject.c:1823
    #11 0x00007ffff5e6d24d in g_object_new_valist (object_type=object_type@entry=93824996288016, first_property_name=first_property_name@entry=0x5555555920c6 "connection", var_args=var_args@entry=0x7fffffffcc10) at gobject.c:2042
    #12 0x00007ffff5e6d691 in g_object_new (object_type=93824996288016, first_property_name=0x5555555920c6 "connection") at gobject.c:1626
    #13 0x000055555556f261 in nmt_editor_new (connection=0x555555802880) at clients/tui/nmt-editor.c:109
    #14 0x0000555555562b35 in nmt_edit_connection (connection=0x555555802880) at clients/tui/nmtui-edit.c:448
    #15 0x0000555555563a29 in create_connection (widget=0x55555588b150 [NmtNewtListbox], list=0x555555922a00) at clients/tui/nmtui-edit.c:185
    #16 0x0000555555563a5d in create_connection_and_quit (widget=0x55555588b150 [NmtNewtListbox], list=0x555555922a00) at clients/tui/nmtui-edit.c:192
    #20 0x00007ffff5e81b0f in <emit signal ??? on instance 0x55555588b150 [NmtNewtListbox]> (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at gsignal.c:3447
        #17 0x00007ffff5e6630d in g_closure_invoke (closure=0x555555929260, return_value=0x0, n_param_values=1, param_values=0x7fffffffcfe0, invocation_hint=0x7fffffffcf60) at gclosure.c:804
        #18 0x00007ffff5e7898e in signal_emit_unlocked_R (node=node@entry=0x55555582ac70, detail=detail@entry=0, instance=instance@entry=0x55555588b150, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fffffffcfe0) at gsignal.c:3635
        #19 0x00007ffff5e811a5 in g_signal_emit_valist (instance=0x55555588b150, signal_id=<optimized out>, detail=0, var_args=var_args@entry=0x7fffffffd1b0) at gsignal.c:3391
    #21 0x000055555558e43f in nmt_newt_widget_activated (widget=0x55555588b150 [NmtNewtListbox]) at clients/tui/newt/nmt-newt-widget.c:329
    #22 0x0000555555584fc8 in nmt_newt_form_iterate (form=0x555555922a00 [NmtAddConnection]) at clients/tui/newt/nmt-newt-form.c:309
    #23 0x0000555555585d62 in nmt_newt_form_keypress_callback (fd=1435623072, condition=G_IO_IN, user_data=0x0) at clients/tui/newt/nmt-newt-form.c:335
    #24 0x00007ffff598a247 in g_main_dispatch (context=0x5555557c3af0) at gmain.c:3234
    #25 0x00007ffff598a247 in g_main_context_dispatch (context=context@entry=0x5555557c3af0) at gmain.c:3899
    #26 0x00007ffff598a5e8 in g_main_context_iterate (context=0x5555557c3af0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3972
    #27 0x00007ffff598a902 in g_main_loop_run (loop=0x55555591b190) at gmain.c:4168
    #28 0x00005555555609b5 in main (argc=1, argv=0x7fffffffd5e8) at clients/tui/nmtui.c:298

Fixes: 6a4af482f02c4342c69cd38dd46c078aeaf60d0d

2 files changed, 3 insertions, 1 deletions

diff --git a/clients/tui/nm-editor-bindings.c b/clients/tui/nm-editor-bindings.c
index 24803868e5..647ac8df17 100644
--- a/clients/tui/nm-editor-bindings.c
+++ b/clients/tui/nm-editor-bindings.c
@@ -585,6 +585,9 @@ get_security_type (NMEditorWirelessSecurityMethodBinding *binding)
 		return "none";
 
 	key_mgmt = nm_setting_wireless_security_get_key_mgmt (binding->s_wsec);
+	if (!key_mgmt)
+		return "none";
+
 	auth_alg = nm_setting_wireless_security_get_auth_alg (binding->s_wsec);
 
 	/* No IEEE 802.1x */
diff --git a/clients/tui/nmt-page-wifi.c b/clients/tui/nmt-page-wifi.c
index 7d734f004b..f846345c69 100644
--- a/clients/tui/nmt-page-wifi.c
+++ b/clients/tui/nmt-page-wifi.c
@@ -193,7 +193,6 @@ nmt_page_wifi_constructed (GObject *object)
 		nm_connection_add_setting (conn, nm_setting_wireless_security_new ());
 		s_wsec = nm_connection_get_setting_wireless_security (conn);
 	}
-	s_wsec = nm_connection_get_setting_wireless_security (conn);
 
 	deventry = nmt_editor_page_device_get_device_entry (NMT_EDITOR_PAGE_DEVICE (object));
 	g_object_bind_property (s_wireless, NM_SETTING_WIRELESS_MAC_ADDRESS,