I using EnumDisplayDevices that give me obtain information about the display devices in the current session.
But i need information about the display devices regardless of session. Because i create some windows service application (System process).
Does anybody know some alternative for this code:
vncDesktop::GetNrMonitors()
{
if(OSversion()==3 || OSversion()==5) return 1;
int i;
int j=0;
helper::DynamicFn<pEnumDisplayDevices> pd("USER32","EnumDisplayDevicesA"); // it's EnumDisplayDevices function
if (pd.isValid())
{
DISPLAY_DEVICE dd;
ZeroMemory(&dd, sizeof(dd));
dd.cb = sizeof(dd);
for (i=0; (*pd)(NULL, i, &dd, 0); i++)
{
if (dd.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)
if (!(dd.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER))j++;
}
}
return j;
}
Thanks in advance!
sources below
Well, the reason why this doesn't work is because session 0 isn't connected to a console. What's more, because many more video settings are per user on Windows 7 it would be bad to assume that anything you get from one user even applies to another user.
You could also try to find the display monitors in the registry.
The display monitors should be stored here:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\DISPLAY
The class GUID for display monitors is {4D36E96E-E325-11CE-BFC1-08002BE10318}. you can try to find the monitors in system using the Setup API (SetupDiGetClassDevs, ...)
If you are coding specifically for Win7 and later, you might want to have a look at QueryDisplayConfig and related functions.
Sources
EnumDisplayDevices function not working for me
http://social.msdn.microsoft.com/Forums/en/vcgeneral/thread/4384f8d2-c429-410b-87e4-1e031ddc8167
I found solution for this issue. Only need create process user - System and SessionID - some user. And then all working fine.
Related
I've started to investigate how credential providers work, but due to poor documentation I got stuck in couple of places.
I have console application(sort of like ssh server) when I connect remotly to this application and authenticate(none is logged on), I want it to be able to forward those credentials to credential provider and I want CP to login user(create session).
I've also noticed that In documentation it says that SetSerialization method always gets called after SetusageScenario. But I've added logs and SetSerialization never gets called after SetusageScenario.
As I know SetSerialization is called when credential is provided by application. I can't understand what does it mean to provide credential through application? It seems like this is what I need, to forward credentials from application to credential provider, but How can I do that? Are there some functions that I could call from credential provider dll to provoke login?
Is there any way I can achieve this? I've read that when remote login is done, UpdateRemoteCredential is called, But As I understand(correct me if I'm wrong) in remote login it means RDP but my application is simple, it just listens to some port and gets username and password and then uses Logonuser function.
A program named MxLogon2 implements this scheme. A remote server with MxLogon2 installed can authenticate a USB key(But I want username/password) connected to the client side in a remote desktop session.
Any suggestion that would direct me to right way would be greatly appriciated.
P.S
I'm using pGina as my credential provider.
I wouldn't mind too much of SetSerialization in your case. This is used for pre-initializing tile.
One example would be, with RDP connection, you can store certificates of credentials on your system. This function is used to pre-inquire tiles with those credentials (not the only solution though).
Make it return E_NOTIMPL in your case.
The main purpose of the provider is to initialize Credentials and tiles :
Credentials initialization
is done through SetUsageScenario function (automatically called after Provider construction).
In there, you can customize the behavior depending on scenario you are in. Most basic one being CPUS_LOGON.
It shall look like this (this is only a preview)
HRESULT Provider::SetUsageScenario(
__in CREDENTIAL_PROVIDER_USAGE_SCENARIO cpus,
__in DWORD dwFlags
)
{
HRESULT hr;
switch(cpus)
{
case CPUS_UNLOCK_WORKSTATION:
case CPUS_LOGON:
hr = this->_InitCredential();
break;
default:
hr = E_INVALIDARG;
break;
}
return hr;
}
Tiles initialization
begins in GetCredentialCount function. It allows you to define how many tiles you gonna show (pdwCount out parameter), as well as the one to be used as the default tile (pdwDefault).
Auto-Logon is also handle in here (through pbAutoLogonWithDefault).
Tiles Enumeration is then beginning in GetCredentialAt function.
Passing credentials for authentication is done in the credential you're using through the GetSerialization function.
Examples of implementation can be found here.
I hardly insist on example as it easily divert depending on what you are trying to achieve. This is very flexible and you'd better understand the purpose of any function / parameter to fit your goals.
EDIT - cf comments :
#define IDCredential 0x1
Credential::Credential(Provider* parent)
{
//Do ssh connection or whatever
if(success)
{
parent->login = retrievedLogin;
parent->pwd = retrievedPwd;
parent->CredentialUsed = IDCredential;
parent->autoLogin = true;
parent->ProviderEvents->CredentialsChanged(AdviseContext);
}
}
HRESULT Provider::GetCredentialCount(
__out DWORD* pdwCount,
__out_range(<,*pdwCount) DWORD* pdwDefault,
__out BOOL* pbAutoLogonWithDefault
)
{
if(this->autoLogin && this->CredentialUsed)
{
*pbAutoLogonWithDefault = true; // --> Instant call to GetSerialization
*pdwDefault = this->CredentialUsed; //index of the tile
}
else
{
*pbAutoLogonWithDefault = false;
*pdwDefault = IDCredential;
}
return S_OK;
}
I am trying to connect to a mobile network via a modem and a sim card. Every time I try to set the APN String and User Credentials in a Context via SetProvisionedContext() I get the E_INVALIDARG HRESULT.
As Parameters I used an Instance of MBN_CONTEXT, a wchar_t* in form of &std::vector<wchar_t>[0], and a ULONG*.
MBN_CONTEXT context;
std::vector<WCHAR> apnVector;
inParamAPN.GetCString(apnVector);
std::vector<WCHAR> userNameVec;
inParamUsername.GetCString(userNameVec);
std::vector<WCHAR> passwordVector;
inParamPassword.GetCString(passwordVector);
context.contextID = MBN_CONTEXT_ID_APPEND;
context.contextType = MBN_CONTEXT_TYPE_INTERNET;
context.accessString = &apnVector[0];
context.userName = &userNameVec[0];
context.password = &passwordVector[0];
context.compression = MBN_COMPRESSION_NONE;
context.authType = MBN_AUTH_PROTOCOL_PAP;
and later when I have the IMbnConnectionContext:
std::vector<WCHAR> providerVector;
InParamProvider.GetCString(providerVector);
ULONG requestID;
contextInterface->SetProvisionedContext(context, &providerVector[0], &requestID);
So my Question is: Which Parameter does the WinAPI have a Problem with, and how can I fix it?
Also any Tips of additional Sources for Information are appriciated.
All I have so far are the official MSDN and the Code Example contained in the Windows 7 SDK. Are there any further sources of Information I am not aware of? A google search didn't yield the hoped for results.
In the end I did not get it working as it should. I used the second way of connecting to a custom APN, by making a new connection profile. For this I used a XML filled with the Values I needed.
Along the way I encountered another problem with an unforseen Error Code which I described here.
Best regards,
Stefan
I'm struggling to understand all of the SECURITY_LOGON_TYPE values:
typedef enum _SECURITY_LOGON_TYPE {
Interactive = 2,
Network,
Batch,
Service,
Proxy,
Unlock,
NetworkCleartext,
NewCredentials,
RemoteInteractive,
CachedInteractive,
CachedRemoteInteractive,
CachedUnlock
} SECURITY_LOGON_TYPE, *PSECURITY_LOGON_TYPE;
I'm trying to understand them in the context of a C++ code like this, that lists all logon sessions:
//Error handling is skipped!
ULONG n = 0;
LUID* pluid;
LsaEnumerateLogonSessions(&n, &pluid);
for(ULONG s = 0; s < n; s++)
{
PSECURITY_LOGON_SESSION_DATA* ps;
LsaGetLogonSessionData(&pluid[s], &ps);
//Analyze logon type
ps->LogonType;
LsaFreeReturnBuffer(ps);
}
LsaFreeReturnBuffer(pluid);
So far I can understand these:
Interactive if the actual (human) user logged in to the workstation. (As we are now while viewing this page.)
RemoteInteractive if a Remote Desktop Connection has been established with this workstation.
Can someone add more description to other values?
The MSDN explanations are all pretty self-explanatory, with the following clarifications:
CachedXXXX - Don't ask the domain controller to validate; instead, check against the local cached copy of the credentials.
Batch - Scheduled Tasks run using the Batch logon type. You can deny the Batch Logon right, which would prevent a user from running scheduled tasks.
I'm running the following piece of code from a local service application. The purpose is to obtain the path to a user's profile before calling LoadUserProfile() to load that user's profile before calling CreateProcessAsUser() to run a user-mode process on behalf of that user.
Note that this question is not about LoadUserProfile(), or CreateProcessAsUser().
What happens is this. When the code below is run on Windows XP w/SP3 that is a part of the Active Directory domain, with a single user logged in via a local console (that user's session ID is used below) the NetUserGetInfo() API fails. Also note that it works fine in any other circumstance:
//'dwSessID' = session ID of the user to retrieve a user profile path for
LPTSTR pUserName = NULL;
DWORD dwcbSzUserName = 0;
if(!WTSQuerySessionInformation(WTS_CURRENT_SERVER_HANDLE, dwSessID, WTSUserName, &pUserName, &dwcbSzUserName))
{
//Error
return false;
}
USER_INFO_4* pUI4 = NULL;
DWORD dwNetStatus;
if((dwNetStatus = NetUserGetInfo(NULL, pUserName, 4, (BYTE**)&pUI4)) == NERR_Success)
{
PROFILEINFO pfi = {0};
pfi.dwSize = sizeof(pfi);
pfi.lpUserName = pUserName;
pfi.dwFlags = PI_NOUI;
pfi.lpProfilePath = pUI4->usri4_profile;
LoadUserProfile(hToken, &pfi);
//And so on
}
else
{
//On that specific machine I get here with 'dwNetStatus' = 2221,
//or NERR_UserNotFound, that according to MSDN is
//"The user name could not be found."
//Also note that GetLastError is not used for this API.
}
Can some suggest why can NetUserGetInfo() fail on that particular machine, and how to fix this code?
PS. I know that MSDN for NetUserGetInfo states that there might be issues with a ACL on Active Directory domain, but it doesn't specify how to set one...
If I read the documentation for NetUserGetInfo, for the information level of the data you code 4 . It's written Level 4 Return detailed information and additional attributes about the user account. This level is valid only on servers. As far as I understand it's not your case. Do you verify the value of pUserName returned by WTSQuerySessionInformation.
As JPBlanc stated NetUserGetInfo with level 4 is valid only on servers.
Another problem is that you retrieve the name of the logged on user, but not the domain the user belongs to.
Noticed you are calling NetUserGetInfo with pUserName the type of LPTSTR.
Sometimes it won't work (if you will compile your project to use ANSII strings by default).
Consider changing you string types to LPWSTR.
How do I programmatically determine the network connection link speed for an active network connection - like Task Manager shows you in the Networking tab? I'm not really after the bandwidth available, just a figure for the current connection, e.g. 54Mbps, 100Mbps etc.
Win32_NetworkAdapter WMI class can help you (Speed property). It returns the value 54000000 for my WiFi adapter connected to a WiFi-g access point.
In the end I found the Win32_PerfRawData_Tcpip_NetworkInterface WMI class, as I need to support legacy platforms which, unfortunately, the Win32_NetworkAdapter doesn't do. Win32_PerfRawData_Tcpip_NetworkInterface has a CurrentBandwidth property which gives me what I need on all required platforms (I realise I said I didn't need "bandwidth" but its acceptable and appears to return the "nominal bandwidth" of the adapter anyway).
Thanks to all those who posted, pointing me in the right direction.
.NET way how to know adapter speed is
IPGlobalProperties computerProperties = IPGlobalProperties.GetIPGlobalProperties();
NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();
if ( nics != null )
for (int i = 0; i < nics.Length; i++)
Console.WriteLine("Adapter '{0}' speed : {1}", nics[i].Name, nics[i].Speed);
Some adapters are tunnels, so their speed will be returned as 0.
Read NetworkInterface documentation on the MSDN for more information.