188 lines
3.9 KiB
C
188 lines
3.9 KiB
C
/********************************************************************/
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/** Copyright(c) 1995 Microsoft Corporation. **/
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/********************************************************************/
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//***
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//
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// Filename: misc.c
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//
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// Description: Contains miscillaneous functions and routines
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//
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// History: Feb 11,1998 NarenG Created original version.
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//
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#define UNICODE
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#include <windows.h>
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#include <rtutils.h>
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#include <lmcons.h>
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#include <rasauth.h>
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#define INCL_MISC
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#include "ppputil.h"
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#include <stdio.h>
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#include <stdlib.h>
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//**
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//
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// Call: ExtractUsernameAndDomain
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//
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// Returns: NO_ERROR - Success
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// Non-zero returns - Failure
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//
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// Description:
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//
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DWORD
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ExtractUsernameAndDomain(
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IN LPSTR szIdentity,
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OUT LPSTR szUserName,
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OUT LPSTR szDomainName OPTIONAL
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)
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{
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WCHAR * pwchIdentity = NULL;
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WCHAR * pwchColon = NULL;
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WCHAR * pwchBackSlash = NULL;
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WCHAR * wszIdentity = NULL;
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DWORD dwLen, dwSize;
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DWORD dwErr = NO_ERROR;
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*szUserName = (CHAR)NULL;
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if ( szDomainName != NULL )
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{
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*szDomainName = (CHAR)NULL;
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}
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//
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// First, allocate a buffer to hold the unicode version of the
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// identity string
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//
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dwLen = strlen(szIdentity);
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if ( dwLen == 0 )
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{
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dwErr = ERROR_BAD_USERNAME;
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goto LDone;
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}
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dwSize = (dwLen + 1) * sizeof(WCHAR);
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//
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// Convert identity to UNICODE string for user name so that
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// a search for '\\' doesn't accidentally succeed. (bug 152088)
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//
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wszIdentity = LocalAlloc ( LPTR, dwSize );
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if ( wszIdentity == NULL )
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{
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dwErr = ERROR_NOT_ENOUGH_MEMORY;
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goto LDone;
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}
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if ( 0 == MultiByteToWideChar(
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CP_ACP,
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0,
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szIdentity,
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-1,
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wszIdentity,
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dwLen + 1 ) )
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{
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dwErr = GetLastError();
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goto LDone;
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}
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pwchIdentity = wszIdentity;
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//
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// Parse out username and domain from the Name (domain\username or
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// username format).
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//
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if ( ( pwchBackSlash = wcschr( wszIdentity, L'\\' ) ) != NULL )
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{
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//
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// Extract the domain.
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//
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DWORD cbDomain;
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//
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// Get the domain the user wants to logon to, if one was specified,
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// and convert to UNICODE.
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//
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cbDomain = (DWORD)(pwchBackSlash - pwchIdentity);
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if ( cbDomain > DNLEN )
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{
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dwErr = ERROR_BAD_USERNAME;
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goto LDone;
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}
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if ( szDomainName != NULL )
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{
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dwLen = WideCharToMultiByte(
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CP_ACP,
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0,
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pwchIdentity,
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cbDomain,
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szDomainName,
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cbDomain,
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NULL,
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NULL );
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if ( dwLen > 0 )
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{
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szDomainName[ dwLen ] = 0;
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}
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else
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{
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szDomainName[ 0 ] = 0;
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}
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}
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pwchIdentity = pwchBackSlash + 1;
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}
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else
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{
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//
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// No domain name
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//
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if ( szDomainName != NULL )
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{
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szDomainName[ 0 ] = '\0';
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}
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}
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dwLen = wcslen( pwchIdentity );
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if ( dwLen > UNLEN )
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{
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dwErr = ERROR_BAD_USERNAME;
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goto LDone;
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}
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if ( 0 == WideCharToMultiByte(
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CP_ACP,
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0,
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pwchIdentity,
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-1,
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szUserName,
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UNLEN + 1,
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NULL,
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NULL ) )
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{
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dwErr = GetLastError();
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goto LDone;
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}
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LDone:
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LocalFree( wszIdentity );
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return( dwErr );
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}
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