http://beta.experts-exchange.com/Programming/Programming_Languages/Cplusplus/Q_20707733.html
Solution Title: Finding MAC address
Author: jacobuecker
Points: 200 Grade: A
Date: 08/12/2003 03:01PM PDT
Is this what you are
looking for?
If not, try our Search I need to retrieve my MAC address without using Netbios
(because if the computer isn't plugged into the network it doesn't work).
I've seen that the guid contains the MAC address but
that doesn't seem to be true in XP. Thanks.
Comment from ged325
Date: 08/12/2003 05:02PM PDT
Comment char ipconfig[] = "ipconfig > ipconfig.txt"; system(ipconfig); then open the text file and parse it for the mac address. be sure to close the stream and delete the file when you're done.
Comment from ged325
Date: 08/12/2003 05:03PM PDT
Comment (you're parsing for the physical address)
Comment from ged325
Date: 08/12/2003 05:05PM PDT
Comment char ipconfig[] = "ipconfig > ipconfig.txt"; should be: char ipconfig[] = "ipconfig /all > ipconfig.txt";
Comment from jkr
Date: 08/12/2003 06:13PM PDT
Comment Try 'GetAdaptersAddresses()'
(http://msdn.microsoft.com/library/default.asp?url=/library/en-us/iphlp/iphlp/getadaptersaddresses.asp)
Accepted Answer from skypalae
Date: 08/12/2003 10:28PM PDT
Accepted Answer http://www.codeguru.com/network/GetMAC.html
Comment from ice911
Date: 08/12/2003 11:43PM PDT
Comment download this library and header from here - www23.brinkster.com/monip/iphlpapi.zip ///////////////////////////////////////////////////////////////////////////////////////////////
#include
#include
#include PIP_ADAPTER_INFO pAdapterInfo, pAdapt;
DWORD AdapterInfoSize;
// Allocate memory from sizing information
if ((pAdapterInfo = (PIP_ADAPTER_INFO) GlobalAlloc(GPTR, AdapterInfoSize)) == NULL)
{
printf("Memory allocation error\n");
return;
} // Get actual adapter information
if ((Err = GetAdaptersInfo(pAdapterInfo, &AdapterInfoSize)) != 0)
{
printf("GetAdaptersInfo failed with error %d\n", Err);
return;
} pAdapt = pAdapterInfo;
printf("\tPhysical Address. . . . . . : ");
for (UINT i=0; iAddressLength; i )
{
if (i == (pAdapt->AddressLength - 1))
printf("%.2X\n",(int)pAdapt->Address[i]);
else
printf("%.2X-",(int)pAdapt->Address[i]);
}
///////////////////////////////////////////////////////////////////////////////////////////// --ice911
(hope this is what you need)
Comment from tegila
Date: 08/13/2003 07:09AM PDT
Comment #include
#include
#include
#include
#include typedef struct _ASTAT_
{
ADAPTER_STATUS adapt;
NAME_BUFFER NameBuff [30];
}ASTAT, * PASTAT; ASTAT Adapter; void main (void)
{
NCB ncb;
UCHAR uRetCode;
char NetName[50]; memset( &ncb, 0, sizeof(ncb) );
ncb.ncb_command = NCBRESET;
ncb.ncb_lana_num = 0; uRetCode = Netbios( &ncb );
printf( "The NCBRESET return code is: 0x%x \n", uRetCode ); memset( &ncb, 0, sizeof(ncb) );
ncb.ncb_command = NCBASTAT;
ncb.ncb_lana_num = 0; strcpy( ncb.ncb_callname, "* " );
ncb.ncb_buffer = (char *) &Adapter;
ncb.ncb_length = sizeof(Adapter); uRetCode = Netbios( &ncb );
printf( "The NCBASTAT return code is: 0x%x \n", uRetCode );
if ( uRetCode == 0 )
{
printf( "The Ethernet Number is: xxxxxx\n",
Adapter.adapt.adapter_address[0],
Adapter.adapt.adapter_address[1],
Adapter.adapt.adapter_address[2],
Adapter.adapt.adapter_address[3],
Adapter.adapt.adapter_address[4],
Adapter.adapt.adapter_address[5] );
}
}
Comment from tegila
Date: 08/13/2003 07:11AM PDT
Comment Getting the MAC Address for an Ethernet Adapter You can use the Netbios function to get the Media Access Control
(MAC) address for an ethernet adapter if your card is bound to
NetBIOS. The following example uses the NCBASTAT command, providing
an asterisk (*) as the name in the ncb_callname member of the NCB structure. Note The following code does not work reliably on Windows 95, Windows 98, or Windows Me. http://www.experts-exchange.com/Programming/Programming_Languages/Cplusplus/Q_20834597.html Solution Title: Look up DNS from Local host=>C
Author: Barcaboy
Points: 150 Grade: A
Date: 12/25/2003 10:37AM PST
Is this what you are
looking for?
If not, try our Search hy all i need example code how to look up the local Domain Name Server. (primairy,secundairy,...)
this normaly depends from Isp to Isp. i've been searching for it quite awhile, but never found example code althought i know its possible, since there are many applications doing it... it must have something to do with gethostbyname etc... but none of my code managed to pull it off please if anyone knows how to do it, then help me :) barcaboy Comment from sirbounty
Date: 12/25/2003 10:46AM PST
Comment Probably should put this up under Programming TA.
You can use IPCONFIG /ALL or WINIPCFG from most MS OSs (but I don't know if that helps you).
Can you shell out to DOS and run IPCONFIG to get it?
Comment from Barcaboy
Date: 12/25/2003 11:01AM PST
Author Comment yep with that command i see it Dns-Servers........... but however, i need C code for it :( @admin: could you please move this topic to programming, i didn't know this was for network only, without programming in it sorry
Comment from sirbounty
Date: 12/25/2003 11:04AM PST
Comment Post a 0 point question in the CS area. . .
Comment from bbao
Date: 12/27/2003 08:47PM PST
Comment You may get them from array DNSServerSearchOrder by calling
Win32_NetworkAdapterConfiguration class. The Win32_NetworkAdapterConfiguration WMI class represents the attributes
and behaviors of a network adapter. This class has been extended
to include extra properties and methods that support the management
of the TCP/IP and Internetworking Packet Exchange (IPX) protocols
(and are independent of the network adapter). This class will be
deprecated and is not guaranteed to be supported after the
ratification of the Distributed Management Task Force (DMTF) CIM
network specification. The schema for classes such as Win32 network
adapters, protocols, or bindings, will be updated to conform to the
DMTF CIM network specification. http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wmisdk/wmi/win32_networkadapterconfiguration.asp
Comment from Barcaboy
Date: 12/28/2003 03:19AM PST
Author Comment it requires Nt-like Os like Windows Xp etc.. i need it fully compatible with all versions.
Administrative Comment from modulo
Date: 12/28/2003 06:16AM PST
Administrative Comment Moved to C topic area. modulo Community Support Moderator
Experts Exchange
Accepted Answer from bbao
Date: 12/28/2003 07:00AM PST
Accepted Answer if so, you may use GetNetworkParams function to retrieve network parameters (including DNS servers)
for the local computer, it is compatible with 98/me/nt/2k/2k3. http://msdn.microsoft.com/library/en-us/iphlp/iphlp/getnetworkparams.asp
Comment from Barcaboy
Date: 12/28/2003 10:49AM PST
Author Comment thx i'm having some trouble with yout GetNetworkParams. i downloaded the iphlpapi because they aren't by default in Vc6.0 :s but even with that it didn't compile i keep getting the error: error C2061: syntax error : identifier 'PIP_ADAPTER_ADDRESSES' searched google for a solution but none worked :s
Comment from bbao
Date: 12/28/2003 04:12PM PST
Comment hi, i didnt find iphlpapi lib on my computer too. where did you download the lib, from m$ site? as for C2061 compiler error, it means the compiler found identifier where it was not expected.
"This error can be caused by enclosing an initializer in parentheses.
The error can be avoided by enclosing the declarator in parentheses
or making it a typedef." [quoted from m$ vc programmer's guide] so please find the line that contains 'PIP_ADAPTER_ADDRESSES', either in .c or .h file, see if they are correct.
Comment from Barcaboy
Date: 12/29/2003 09:25AM PST
Author Comment http://www.lastbit.com/trafmeter/iphlpapi.zip i looked at it, this is the line (from iphlpapi.h) #ifdef _WINSOCK2API_ //
// The following functions require Winsock2.
// DWORD
WINAPI
GetAdaptersAddresses(
ULONG Family,
DWORD Flags,
PVOID Reserved,
PIP_ADAPTER_ADDRESSES pAdapterAddresses,
PULONG pOutBufLen
); #endif nothing seems to be wrong, don't know how to fix it :s
Comment from bbao
Date: 12/29/2003 09:31AM PST
Comment the key is who defines type PIP_ADAPTER_ADDRESSES? else the string is unknown to compiler. umm...
maybe the .zip you downloaded is not full compatiblel with M$ SDK.
Comment from Barcaboy
Date: 12/29/2003 09:37AM PST
Author Comment can't i download it from microsoft?? which SDK is needed for it?
Comment from bbao
Date: 12/29/2003 08:41PM PST
Comment 1. officially, order a Platform SDK CD at:
https://qmedia.e-storefront.com/showcontent.asp?contentname=PlatformSDKHome 2. i think you may post a comment at the following question to ask the experts there:
http://www.experts-exchange.com/Programming/Programming_Platforms/Win_Prog/Q_20770033.html hope it helps,
bbao
Comment from Barcaboy
Date: 12/30/2003 03:43AM PST
Author Comment i'm not really interestd in buying it thought :s:s
Comment from bbao
Date: 12/30/2003 03:48AM PST
Comment hehe, ok no problem. have you posted a comment there to ask for the URL to download iphlpapi lib?
Comment from Barcaboy
Date: 12/30/2003 04:16AM PST
Author Comment yeah i'm waiting for a reply :) i've seen there is a possibility to use WSAIoctl() but the example code (from microsoft) only gave the subnetmask etc.. do you perhaps know how to change it so it finds the dns?. ///
/******************************************************************************* INTRFC.CPP
*
* This program demonstrates how to programmatically enumerate IP interface
* information such as a system's IP Address, Subnet mask, and broadcast
* address through the WSAIoctl() API using the SIO_GET_INTERFACE_LIST
* option. Additionally, this sample demonstrates how to interpret IP
* status flags from each IP interface. The flags are defined in the
* Windows Sockets 2 Protocol-Specific Annex specification which can be
* found in the January 98 MSDN Platform SDK.
*
*
* Copyright 1996 - 1998 Microsoft Corporation.
* All rights reserved.
* This source code is only intended as a supplement to
* Microsoft Development Tools and/or WinHelp documentation.
* See these sources for detailed information regarding the
* Microsoft samples programs.
\******************************************************************************/
#define _WIN32_WINNT 0x0400
#define WINVER 0x0400 #include
#include
#include void main(void)
{
WORD versionRequested;
int wsError;
WSADATA winsockData;
SOCKET s;
DWORD bytesReturned;
char* pAddrString;
SOCKADDR_IN* pAddrInet;
u_long SetFlags;
INTERFACE_INFO localAddr[10]; // Assume there will be no more than 10 IP interfaces
int numLocalAddr; versionRequested = MAKEWORD(2, 2); wsError = WSAStartup(versionRequested, &winsockData);
if (wsError)
{
fprintf (stderr, "Startup failed\n");
return;
} if((s = WSASocket(AF_INET, SOCK_DGRAM, IPPROTO_UDP, NULL, 0, 0)) == INVALID_SOCKET)
{
fprintf (stderr, "Socket creation failed\n");
WSACleanup();
return;
} // Enumerate all IP interfaces
fprintf(stderr, "Scanning Interfaces . . .\n\n");
wsError = WSAIoctl(s, SIO_GET_INTERFACE_LIST, NULL, 0, &localAddr,
sizeof(localAddr), &bytesReturned, NULL, NULL);
if (wsError == SOCKET_ERROR)
{
fprintf(stderr, "WSAIoctl fails with error %d\n", GetLastError());
closesocket(s);
WSACleanup();
return;
} closesocket(s); // Display interface information
numLocalAddr = (bytesReturned/sizeof(INTERFACE_INFO));
for (int i=0; isin_addr);
if (pAddrString)
printf("IP: %s ", pAddrString); pAddrInet = (SOCKADDR_IN*)&localAddr[i].iiNetmask;
pAddrString = inet_ntoa(pAddrInet->sin_addr);
if (pAddrString)
printf(" SubnetMask: %s ", pAddrString); pAddrInet = (SOCKADDR_IN*)&localAddr[i].iiBroadcastAddress;
pAddrString = inet_ntoa(pAddrInet->sin_addr);
if (pAddrString)
printf(" Bcast Addr: %s\n", pAddrString);
SetFlags = localAddr[i].iiFlags;
if (SetFlags & IFF_UP)
printf("This interface is up");
if (SetFlags & IFF_BROADCAST)
printf(", broadcasts are supported");
if (SetFlags & IFF_MULTICAST)
printf(", and so are multicasts");
if (SetFlags & IFF_LOOPBACK)
printf(". BTW, this is the loopback interface");
if (SetFlags & IFF_POINTTOPOINT)
printf(". BTW, this is a point-to-point link");
printf("\n\n");
} WSACleanup();
}
/// link with ws2_32.lib
Comment from bbao
Date: 12/30/2003 04:21AM PST
Comment has this code been test on your machine?
Comment from Barcaboy
Date: 12/30/2003 04:23AM PST
Author Comment yep it works, but gives the wrong info :s
Comment from Barcaboy
Date: 12/30/2003 04:51AM PST
Author Comment found it!!!! now it works, even without the SDK this is what i did: -instead of using the Api GetNetworkParams, i used LoadLibrary and GetProcAddress
to load the GetNetworkParams function from the iphlpapi.dll then i converted the code to work with it, and modified the iphlpapi.h to not include the api GetNetworkParams. so now it works perfect, althought it isn't the best way to do..
Comment from bbao
Date: 12/30/2003 05:02AM PST
Comment oh?! congratulations! thats a good idea to invoke iphlpapi.dll. :) i think we have found a right way, go ahead.
Comment from Barcaboy
Date: 12/30/2003 05:04AM PST
Author Comment yeah, i'll give you the points :)
Comment from bbao
Date: 12/30/2003 05:23AM PST
Comment thanks for your points and grade. btw, it looks you were right to post your C programming
question to NT networking TA, haha. :)) happy new year!
Comment from bbao
Date: 12/30/2003 05:31AM PST
Comment btw, it would be much better if you could post your source code at here to
help more other people. and btw of btw, where are you? venetian? if you dont mind. :)
Comment from Barcaboy
Date: 12/30/2003 09:27AM PST
Author Comment i'm dutch :) source :
{
//
//
FIXED_INFO * FixedInfo;
ULONG ulOutBufLen;
DWORD dwRetVal;
IP_ADDR_STRING * pIPAddr;
//
//
typedef DWORD (WINAPI *GETNETWORKPARAMS) (PFIXED_INFO pFixedInfo,PULONG pOutBufLen);
static HMODULE m_hIPHLAPI;
static GETNETWORKPARAMS m_GetNetworkParams;
//
if(!m_hIPHLAPI)
{
m_hIPHLAPI = ::GetModuleHandle(TEXT("IPHLPAPI.DLL"));
if(!m_hIPHLAPI)
{
m_hIPHLAPI = ::LoadLibrary(TEXT("IPHLPAPI.DLL"));
}
if(m_hIPHLAPI)
{
m_GetNetworkParams = (GETNETWORKPARAMS)GetProcAddress(m_hIPHLAPI, "GetNetworkParams");
}
}
FixedInfo = (FIXED_INFO *) GlobalAlloc( GPTR, sizeof( FIXED_INFO ) );
ulOutBufLen = sizeof( FIXED_INFO );
if(m_GetNetworkParams)
{
if( ERROR_BUFFER_OVERFLOW == m_GetNetworkParams( FixedInfo, &ulOutBufLen ) ) {
GlobalFree( FixedInfo );
FixedInfo = (FIXED_INFO *) GlobalAlloc( GPTR, ulOutBufLen );
}
}
if ( dwRetVal = m_GetNetworkParams( FixedInfo, &ulOutBufLen ) ) {
printf( "Call to GetNetworkParams failed. Return Value: x\n", dwRetVal );
}
else {
char buff[260];
sprintf(buff,"Dns Server:%s",FixedInfo->DnsServerList.IpAddress.String);
MessageBox(0,buff,0,0);
pIPAddr = FixedInfo -> DnsServerList.Next;
while ( pIPAddr ) {
sprintf(buff,"Dns Server:%s",pIPAddr->IpAddress.String);
MessageBox(0,buff,0,0);
pIPAddr = pIPAddr ->Next;
}
}
}
/// got that idea from some topic at codeguru.com
where they told that you could do it with loading the api, instead of needing to install sdk etc.. be sur to modify iphlpapi.h to exclude the function GetNetworkParams
Comment from bbao
Date: 12/30/2003 09:33AM PST
Comment thanks for your comment, and nice to hear from you again from Holand... :)
發表人 - conundrum 於 2004/07/10 13:27:15
發表時間：2004-07-10 13:14:37
IP:61.64.xxx.xxx 未訂閱
