New subject: [Bug 35567] Xibo Player 1.4.x crashes on startup (WMI reports network adapter with IPEnabled=true and MACaddress=NULL)

10 Feb 2014


      https://bugs.winehq.org/show_bug.cgi?id=35567
Bug ID: 35567
           Summary: Xibo Player 1.4.x crashes on startup (WMI reports
                    network adapter with IPEnabled=true and
                    MACaddress=NULL)
           Product: Wine
           Version: 1.7.12
          Hardware: x86
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: wmi&wbemprox
          Assignee: wine-bugs@winehq.org
          Reporter: focht@gmx.net
    Classification: Unclassified
Hello folks,
as the summary says...
It seems the app fetches network adapter information via WMI(utils) and doesn't
like a network adapter with 'IPEnabled' and NULL 'MACaddress' property.
The problem is that Wine's WMI network adapter info also populates the virtual
loopback device which doesn't have a MAC address by design although it is
'alive'.
On Windows, the virtual adapter used for the 'loopback' address range is
emulated straight inside the stack with no explicit interface properties
exposed.
On MSDN/Technet there is a 'Microsoft Loopback Adapter' mentioned but this
isn't the same thing as the virtual loopback adapter used in Linux (not present
by default, needs explicit installation)
--- snip ---
$ pwd
/home/focht/.wine/drive_c/Program Files/Xibo Player
$ WINEDEBUG=+tid,+seh,+relay,+wbemprox,+wmiutils wine ./XiboClient.exe
...
...
log.txt 2>&1
...
0031:trace:wbemprox:create_class_object L"Win32_NetworkAdapterConfiguration",
0x15c718
...
0031:trace:wbemprox:class_object_Get 0x1beb70, L"IPEnabled", 00000000,
0x33f144, 0x9e2c88, 0x9e2c8c
0031:trace:wbemprox:class_object_Get 0x1beb70, L"IPEnabled", 00000000,
0x33f148, 0x9e2c88, 0x9e2c8c
0031:trace:wbemprox:class_object_Get 0x1beb70, L"MacAddress", 00000000,
0x33f144, 0x9e2d04, 0x9e2d08
...
0031:trace:wbemprox:class_object_Get 0x1beb70, L"MacAddress", 00000000,
0x33f148, 0x9e2d04, 0x9e2d08
0031:Call oleaut32.VariantClear(0033f148) ret=79eeb23d
0031:Ret  oleaut32.VariantClear() retval=00000000 ret=79eeb23d
0031:Call KERNEL32.GetLastError() ret=79eb4e27
0031:Ret  KERNEL32.GetLastError() retval=00000000 ret=79eb4e27
0031:trace:seh:raise_exception code=c0000005 flags=0 addr=0x404bdb7 ip=0404bdb7
tid=0031
0031:trace:seh:raise_exception  info[0]=00000000
0031:trace:seh:raise_exception  info[1]=00000000
0031:trace:seh:raise_exception  eax=00000000 ebx=009a7ed8 ecx=00000000
edx=00000008 esi=009e2cac edi=009e2864
0031:trace:seh:raise_exception  ebp=0033f268 esp=0033f238 cs=0023 ds=002b
es=002b fs=0063 gs=006b flags=00010246
0031:trace:seh:call_stack_handlers calling handler at 0x79edc3bc code=c0000005
flags=0
...
--- snip ---
Managed backtrace:
--- snip ---
Unhandled Exception: System.NullReferenceException: Object reference not set to
an instance of an object.
   at XiboClient.HardwareKey.GetMACAddress()
   at XiboClient.HardwareKey..ctor()
   at XiboClient.XiboTraceListener.InitializeListener()
   at XiboClient.XiboTraceListener..ctor()
   at XiboClient.Program.Main(String[] arg)
...
--- snip ---
Winedbg session:
--- snip ---
Wine-dbg>bt
Backtrace:
=>0 0x7e13e3f1 fill_networkadapterconfig(table=0x7e15f0a4, cond=(nil))
[/home/focht/projects/wine/wine.repo/src/dlls/wbemprox/builtin.c:1656] in
wbemprox (0x0033eeb8)
1 0x7e146115 exec_query+0x5b(str="SELECT * FROM
Win32_NetworkAdapterConfiguration", result=0x33efac)
[/home/focht/projects/wine/wine.repo/src/dlls/wbemprox/query.c:409] in wbemprox
(0x0033eee8)
2 0x7e14af4e create_instance_enum+0x32(path=0x1d1c70, iter=0x33efac)
[/home/focht/projects/wine/wine.repo/src/dlls/wbemprox/services.c:412] in
wbemprox (0x0033ef18)
3 0x7e14b729 wbem_services_CreateInstanceEnum+0x11d(iface=0x1d1618,
strClass="Win32_NetworkAdapterConfiguration", lFlags=0x11, pCtx=(nil),
ppEnum=0x33efac)
[/home/focht/projects/wine/wine.repo/src/dlls/wbemprox/services.c:595] in
wbemprox (0x0033ef78)
4 0x79f9cab0 in mscorwks (+0x12caaf) (0x0033f180)
...
Wine-dbg>p *rec
{index=0x1, ipconnectionmetric=0x14, ipenabled=0xffffffff,
mac_address=0x0(nil)}
Wine-dbg>p *aa
{u={Alignment=0x100000170, s={Length=0x170, IfIndex=0x1}}, Next=0x1d2274,
AdapterName="lo", FirstUnicastAddress=0x1d21b4, FirstAnycastAddress=(nil),
FirstMulticastAddress=(nil), FirstDnsServerAddress=(nil), DnsSuffix="",
Description="lo", FriendlyName="lo", PhysicalAddress="",
PhysicalAddressLength=0, Flags=0x180, Mtu=0x10000, IfType=0x18,
OperStatus=IfOperStatusUp, Ipv6IfIndex=0, ZoneIndices={0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0}, FirstPrefix=(nil), TransmitLinkSpeed=0,
ReceiveLinkSpeed=0, FirstWinsServerAddress=(nil), FirstGatewayAddress=(nil),
Ipv4Metric=0, Ipv6Metric=0, Luid={Value=0, Info={Reserved=0, NetLuidIndex=0,
IfType=0}}, Dhcpv4Server={lpSockaddr=(nil), iSockaddrLength=0},
CompartmentId=0, NetworkGuid={Data1=0, Data2=0, Data3=0, Data4=""},
ConnectionType=NET_IF_CONNECTION_DEDICATED, TunnelType=TUNNEL_TYPE_NONE,
Dhcpv6Server={lpSockaddr=(nil), iSockaddrLength=0}, Dhcpv6ClientDuid="",
Dhcpv6ClientDuidLength=0, Dhcpv6Iaid=0}
--- snip ---
The code snippet of the .NET application straight from 'ilspy':
--- snip ---
// XiboClient.HardwareKey
public string GetMACAddress()
{
    object locker;
    Monitor.Enter(locker = HardwareKey._locker);
    string result;
    try
    {
        ManagementClass managementClass = new
ManagementClass("Win32_NetworkAdapterConfiguration");
        ManagementObjectCollection instances = managementClass.GetInstances();
        string text = string.Empty;
        using (ManagementObjectCollection.ManagementObjectEnumerator enumerator
= instances.GetEnumerator())
        {
            while (enumerator.MoveNext())
            {
                ManagementObject managementObject =
(ManagementObject)enumerator.get_Current();
                if (text == string.Empty &&
(bool)managementObject.get_Item("IPEnabled"))
                {
                    text = managementObject.get_Item("MacAddress").ToString();
                }
                managementObject.Dispose();
            }
        }
        result = text;
    }
    finally
    {
        Monitor.Exit(locker);
    }
    return result;
}
--- snip ---
$ sha1sum xibo-client-1.4.2-win32-x86.msi 
26fe5b50f067b8d853abc5f6b3be791f56cad7eb  xibo-client-1.4.2-win32-x86.msi
$ du -sh xibo-client-1.4.2-win32-x86.msi 
1.4M    xibo-client-1.4.2-win32-x86.msi
$ wine --version
wine-1.7.12-28-g0f2bed5
Regards
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[Bug 35567] New: Xibo Player 1.4.x crashes on startup (WMI reports network adapter with IPEnabled=true and MACaddress=NULL)