Re: Mapping of network drives
On Jul 24, 5:31 pm, Joseph M. Newcomer <newco...@flounder.com> wrote:
See at end...
On Mon, 23 Jul 2007 23:16:33 -0700, sriram bala <sriramga...@gmail.com> wrote:
On Jul 23, 9:11 pm, Joseph M. Newcomer <newco...@flounder.com> wrote:
Are you mapping a network drive or creating a folder?
Is this being done in a service or in an application (the SvcDebugOut suggests it is a
service). Note that logical devices apply only to a particular login session, and since a
service is not generally logged in as a user, it would not have the session profile of the
logged-in user. Also, I don't know if a non-interactive login will load profiles tht
include mapped drives, even if the interactive login account has the drive mapped.
Please clarify the context in which this code is executing and what you are trying to
accomplish.
joe
On Mon, 23 Jul 2007 02:08:46 -0700, sriram bala <sriramga...@gmail.com> wrote:
hey guys, i tried to map a network drive which is in a remote
computer.i have done verything so that it can be done..how do i create
a folder in a remote computer programatically i vc++.i tried this
function but this works only for local folder creation...
BOOL PrepareFolder(CString& Folder)
{
int iLength;
Folder.TrimLeft();
Folder.TrimRight();
if (!Folder.IsEmpty())
{
iLength = Folder.GetLength();
if (Folder[iLength - 1] != '\\' && Folder[iLength - 1] != '/')
{
Folder += '\\';
}
}
SvcDebugOut(Folder);
if (::GetFileAttributes(Folder) == INVALID_FILE_ATTRIBUTES) //
Doesn't exist?
{
****
DWORD err = ::GetLastError();
****>> > SvcDebugOut(_T("INVALID_FILE_ATTRIBUTES"));
****
SvcDebugOut(ErrorString(err));
You can download the ErrorString function from my MVP Tips site from my essay on using
FormatMessage in MFC. Or you can just do
CString s;
s.Format(_T("%d (%08x)"), err, err);
SvcDebugOut(s);
It's really important to see the precise error code, not just the fact that there is an
error. If you are not using MFC, you can see from my code how to use FormatMessage (I
just wrap it in a CString-returning function).
****>> > if (!::CreateDirectory(Folder, NULL)) // Failed to create the
****
DWORD err = ::GetLastError();
...etc.
****
SvcDebugOut(_T("Cannot Create Direcotry"));
return FALSE;
}
return TRUE;
}
return TRUE;
}
can anyone temme how to create a folder programmatically because i
want save my files there in thet remote folder in that computer....pls
guys help me out....its very urgent!!!!
Joseph M. Newcomer [MVP]
email: newco...@flounder.com
Web:http://www.flounder.com
MVP Tips:http://www.flounder.com/mvp_tips.htm-Hide quoted text -
- Show quoted text -
hi thanks for replying mate...look i am using a windows service.i am
able to map a remote computer using my vc++ code using logon and
impersonating logon functions but the thing is that in that folder
which i am mapping i should create a folder inside that mapped
folder..for ur clarifications this is the llog which i have
written....
07/24/2007 11:42:16 *** \\192.168.1.19\DcmImg
07/24/2007 11:42:16 *** MapNetworkDrive : WNetAddConnection2 Sucess
07/24/2007 11:42:16 *** \\192.168.1.19\DcmImg
07/24/2007 11:42:16 *** MapNetworkDrive : WNetAddConnection2 Sucess
07/24/2007 11:42:16 *** \\192.168.1.19\DcmImg
07/24/2007 11:42:16 *** MapNetworkDrive : WNetAddConnection2 Sucess
07/24/2007 11:42:16 *** Application Folder :E:\EchoService\Debug\
07/24/2007 11:42:16 *** B:\07/24/2007 11:42:16 ***
INVALID_FILE_ATTRIBUTES07/24/2007 11:42:16 *** Cannot Create
Direcotry07/24/2007 11:42:16 *** C:\MatrixViewData\Temp\07/24/2007
*****
Note that you cannot put / in a file name! This may be the problem! This requires that
under temp there is a subdirectory 07, and it has a subdirectory 24, and under that you
can create a file called 2007.
The following characters are illegal in a path element component
\ / indicate directories
| < > piping symbols
: used for drive designation
* ? wildcard symbols
" used to enclose file names that have internal spaces
So if you want a file named with a date, you need to eliminate the internal / characters.
Also, you may find it easier to use the names if they have a format like
2007-11-30
that is, year, month, day, which makes it easier to find files by both name and date
*****
11:42:16 *** C:\MatrixViewData\Log\07/24/2007 11:42:16 *** C:
\MatrixViewData\Backup\07/24/2007 11:42:16 *** C:\MatrixViewData\Cache
\07/24/2007 11:42:16 **
look above that i am able to map the directory but not able to create
folders inside that which is what i want buddy.....can u pls help me
out on this???? thanks in adavnce.....
*****
What was the actual error code? Folder not found or access denied? There are many
reasons you might get an error, and looking at the return just as indicating an error is
not sufficient to isolate the cause. Use ::GetLastError to get the actual error code, as
shown above.
I see you are mapping the drive yourself, so that eliminates the issue about interactive
vs. non-interactive sessions. I would also suggest logging some details of the calls, or
showing the actual code that does the mapping, because when we see C:\ as a drive name, it
raises issues about whether this is a local drive or mapped drive, but you didn't actually
show that you were mapping "C" as a drive name. I presume that this is one of the drive
letters you mapped.
But if the error is "access denied" then you are having some issue about the rights.
Unfortunately, I'm not very knowledgeable about the details of all the Windows security
mechanisms (I know them at a fairly high level, but not the APIs or issues of
impersonation) but with a precise description of the problem, there are people in the
newsgroup who do know the answers to security questions and they might be able to help
better than I can.
Unless the filename issue I pointed out above is the cause (I just went back and read the
log more carefully, after I wrote the above paragraph).
joe
*****
Joseph M. Newcomer [MVP]
email: newco...@flounder.com
Web:http://www.flounder.com
MVP Tips:http://www.flounder.com/mvp_tips.htm- Hide quoted text -
- Show quoted text -- Hide quoted text -
- Show quoted text -
BOOL MapNetworkDrive(CString sDriveLetter, CString sUserName, CString
sPassword, CString sRemotePath)
{
TCHAR szDriveLetter[10] = {'\0'};
strcpy(szDriveLetter, sDriveLetter);
TCHAR szUserName[32] = {'\0'};
strcpy(szUserName, sUserName);
TCHAR szPassword[32] = {'\0'};
strcpy(szPassword, sPassword);
TCHAR szRemotePath[MAX_PATH] = {'\0'};
strcpy(szRemotePath, sRemotePath);
char szErr[128] = {0};
bool log = Logon( ".", _T("administrator"), _T("cimar3"), szErr,
sizeof(szErr) );
NETRESOURCE nr;
DWORD res;
//
// Assign values to the NETRESOURCE structure.
//
nr.dwType = RESOURCETYPE_ANY;
nr.lpLocalName = NULL;
nr.lpRemoteName = _T("\\\\192.168.1.67\\DcmImg");
SvcDebugOut("\\\\192.168.1.67\\DcmImg\n");
nr.lpProvider = NULL;
//
// Call the WNetAddConnection2 function to assign a drive letter to
the share.
//
res = WNetAddConnection2(&nr, _T("administrator"),_T("cimar3"),
FALSE);
if( (res == NO_ERROR) || (res == ERROR_ALREADY_ASSIGNED) )
{
SvcDebugOut("MapNetworkDrive : WNetAddConnection2 Sucess\n");
return TRUE;
}
else
{
CString sErrorMsg;
sErrorMsg.Format("Fail to map %s to %s with UserName=%s and Password=
%s. Error code: %ld\n",
szDriveLetter, szRemotePath, szUserName,
szPassword, res);
SvcDebugOut(sErrorMsg);
return FALSE;
}
}
BOOL EnableNetworkDrive(void)
{
CString sErrorMsg;
/// SHAO FAN APR 13 ///
/// Enable Network Drive if in need
CString sAppFolder;
TCHAR szBuffer[MAX_PATH_LEN] = {'\0'};
if (GetModuleFileName(NULL, szBuffer, MAX_PATH_LEN))
{
sAppFolder = szBuffer;
sAppFolder = sAppFolder.Left(sAppFolder.ReverseFind('\\') + 1);
}
CString sConnectionString = LoadConnectionString(sAppFolder);
CDatabase db;
try
{
db.OpenEx(sConnectionString, CDatabase::noOdbcDialog);
}
catch(CDBException *e)
{
sErrorMsg.Format("Fail to open database: %s\n", e->m_strError);
e->Delete();
SvcDebugOut(sErrorMsg);
return FALSE;
}
CString sDriveLetter, sUserName, sPassword, sRemotePath;
CString sQuery;
CNetDrive NetDriveRS(&db);
// Code Modified by R.Alagaraja on 28-12-2006
// Loading queries from String Table
// ***********************************
LoadStringResource(sQuery,IDS_GNL_SEL_NTDRV);
// ***********************************
try
{
NetDriveRS.Open(CRecordset::snapshot, sQuery);
while(!NetDriveRS.IsEOF())
{
sDriveLetter = NetDriveRS.m_sDriveLetter;
sUserName = NetDriveRS.m_sServiceLoginName;
sPassword = NetDriveRS.m_sServiceLoginPassword;
sRemotePath = NetDriveRS.m_sRemotePath;
if( !MapNetworkDrive(sDriveLetter, sUserName, sPassword,
sRemotePath) )
{
NetDriveRS.Close();
db.Close();
return FALSE;
}
NetDriveRS.MoveNext();
}
NetDriveRS.Close();
}
catch(CDBException *e)
{
db.Close();
sErrorMsg.Format("Fail to retrieve TABLE NetDrive: %s\n", e-
m_strError);
e->Delete();
SvcDebugOut(sErrorMsg);
return FALSE;
}
return TRUE;
}
BOOL DisableNetworkDrive(void)
{
CString sErrorMsg;
/// SHAO FAN APR 17 ///
/// Disable Network Drive if in need
CString sAppFolder;
TCHAR szBuffer[MAX_PATH_LEN] = {'\0'};
if (GetModuleFileName(NULL, szBuffer, MAX_PATH_LEN))
{
sAppFolder = szBuffer;
sAppFolder = sAppFolder.Left(sAppFolder.ReverseFind('\\') + 1);
}
CString sConnectionString = LoadConnectionString(sAppFolder);
CDatabase db;
try
{
db.OpenEx(sConnectionString, CDatabase::noOdbcDialog);
}
catch(CDBException *e)
{
sErrorMsg.Format("Fail to open database: %s\n", e->m_strError);
e->Delete();
SvcDebugOut(sErrorMsg);
return FALSE;
}
CString sDriveLetter, sRemotePath;
CString sQuery;
DWORD dwRet;
CNetDrive NetDriveRS(&db);
// Code Modified by R.Alagaraja on 28-12-2006
// Loading queries from String Table
// ***********************************
LoadStringResource(sQuery,IDS_GNL_SEL_NTDRV);
// ***********************************
try
{
NetDriveRS.Open(CRecordset::snapshot, sQuery);
while(!NetDriveRS.IsEOF())
{
sDriveLetter = NetDriveRS.m_sDriveLetter;
sRemotePath = NetDriveRS.m_sRemotePath;
TCHAR szDriveLetter[10] = {'\0'};
strcpy(szDriveLetter, sDriveLetter);
dwRet = WNetCancelConnection2(szDriveLetter,
CONNECT_UPDATE_PROFILE, FALSE);
if(dwRet != NO_ERROR)
{
CString sErrorMsg;
sErrorMsg.Format("Fail to cancel the network mapping from %s to
%s. Error code: %ld\n", szDriveLetter, sRemotePath, dwRet);
SvcDebugOut(sErrorMsg);
}
NetDriveRS.MoveNext();
}
NetDriveRS.Close();
}
catch(CDBException *e)
{
db.Close();
sErrorMsg.Format("Fail to retrieve TABLE NetDrive: %s\n", e-
m_strError);
e->Delete();
SvcDebugOut(sErrorMsg);
return FALSE;
}
return TRUE;
}
bool Logon( char *host, char *user, char *pwd, char *errbuf, int
buflen )
{
HANDLE Token;
if( LogonUser(user, host, pwd, LOGON32_LOGON_NEW_CREDENTIALS,
LOGON32_PROVIDER_WINNT50, &Token) == 0) {
int error;
error = GetLastError();
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, error, 0, errbuf,
buflen, NULL);
return 1;
}
if( ImpersonateLoggedOnUser(Token) == 0 ) {
int error;
error = GetLastError();
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, error, 0, errbuf,
buflen, NULL);
return 1;
}
return 0;
}
Thanks once again Joe...this is how i map the folder...so i think u
can give me an even more proper insight on this...and i dont get any
access denied errors.....and i also dont get any errors regarding
mapping in winerror.h....so i assume there shud be something else.....