- lib: revert previous commit, things in lib end up being linked

into project applications, projects may want to continue
        supporting Win9x.
        
    lib/
        win_util.cpp, .h

svn path=/trunk/boinc/; revision=18718

checkin_notes

@@ -6480,3 +6480,11 @@ Rom    24 July 2009
     
     lib/
         win_util.cpp, .h
+
+Rom    24 July 2009
+    - lib: revert previous commit, things in lib end up being linked
+        into project applications, projects may want to continue
+        supporting Win9x.
+        
+    lib/
+        win_util.cpp, .h

lib/win_util.cpp

@@ -22,6 +22,8 @@
 #include "boinc_win.h"
 #endif
 
+//#include <Wtsapi32.h>  // not present on academic version of VS2005!
+
 #include "win_util.h"
 
 
@@ -43,7 +45,6 @@ BOOL IsWindows2000Compatible() {
  * Define these if they aren't defined.  They are normally found in
  * winnt.h, but some compilers don't have them.
  **/
-
 #ifndef VER_AND
 #define VER_AND 6
 #endif
@@ -70,6 +71,12 @@ BOOL IsTerminalServicesEnabled() {
     DWORD   dwVersion;
     OSVERSIONINFOEXA osVersionInfo;
     DWORDLONG dwlConditionMask = 0;
+    HMODULE hmodK32 = NULL;
+    HMODULE hmodNtDll = NULL;
+    typedef ULONGLONG (WINAPI *PFnVerSetConditionMask)(ULONGLONG,ULONG,UCHAR);
+    typedef BOOL (WINAPI *PFnVerifyVersionInfoA)(POSVERSIONINFOEXA, DWORD, DWORDLONG);
+    PFnVerSetConditionMask pfnVerSetConditionMask;
+    PFnVerifyVersionInfoA pfnVerifyVersionInfoA;
 
     dwVersion = GetVersion();
 
@@ -79,16 +86,37 @@ BOOL IsTerminalServicesEnabled() {
         // Is it Windows 2000 (NT 5.0) or greater ?
         if (LOBYTE(LOWORD(dwVersion)) > 4)
         {
-            // In Windows 2000 or better we need to use the Product Suite APIs
-            dwlConditionMask = VerSetConditionMask( dwlConditionMask, VER_SUITENAME, VER_AND );
-
-            ZeroMemory(&osVersionInfo, sizeof(osVersionInfo));
-            osVersionInfo.dwOSVersionInfoSize = sizeof(osVersionInfo);
-            osVersionInfo.wSuiteMask = VER_SUITE_TERMINAL | VER_SUITE_SINGLEUSERTS;
-            bResult = VerifyVersionInfoA(
-                          &osVersionInfo,
-                          VER_SUITENAME,
-                          dwlConditionMask);
+            // In Windows 2000 we need to use the Product Suite APIs
+            // Don't static link because it won't load on non-Win2000 systems
+            hmodNtDll = GetModuleHandleA( "NTDLL.DLL" );
+            if (hmodNtDll != NULL)
+            {
+                pfnVerSetConditionMask = (PFnVerSetConditionMask )GetProcAddress( hmodNtDll, "VerSetConditionMask");
+                if (pfnVerSetConditionMask != NULL)
+                {
+                    dwlConditionMask = (*pfnVerSetConditionMask)( dwlConditionMask, VER_SUITENAME, VER_AND );
+                    hmodK32 = GetModuleHandleA( "KERNEL32.DLL" );
+                    if (hmodK32 != NULL)
+                    {
+                        pfnVerifyVersionInfoA = (PFnVerifyVersionInfoA)GetProcAddress( hmodK32, "VerifyVersionInfoA") ;
+                        if (pfnVerifyVersionInfoA != NULL)
+                        {
+                            ZeroMemory(&osVersionInfo, sizeof(osVersionInfo));
+                            osVersionInfo.dwOSVersionInfoSize = sizeof(osVersionInfo);
+                            osVersionInfo.wSuiteMask = VER_SUITE_TERMINAL | VER_SUITE_SINGLEUSERTS;
+                            bResult = (*pfnVerifyVersionInfoA)(
+                                              &osVersionInfo,
+                                              VER_SUITENAME,
+                                              dwlConditionMask);
+                        }
+                    }
+                }
+            }
+        }
+        else
+        {
+            // This is NT 4.0 or older
+            bResult = ValidateProductSuite( "Terminal Server" );
         }
     }
 
@@ -96,6 +124,64 @@ BOOL IsTerminalServicesEnabled() {
 }
 
 
+/**
+ * This function compares the passed in "suite name" string
+ * to the product suite information stored in the registry.
+ * This only works on the Terminal Server 4.0 platform.
+ **/
+BOOL ValidateProductSuite (LPSTR SuiteName) {
+    BOOL rVal = FALSE;
+    LONG Rslt;
+    HKEY hKey = NULL;
+    DWORD Type = 0;
+    DWORD Size = 0;
+    LPSTR ProductSuite = NULL;
+    LPSTR p;
+
+    Rslt = RegOpenKeyA(
+        HKEY_LOCAL_MACHINE,
+        "System\\CurrentControlSet\\Control\\ProductOptions",
+        &hKey
+        );
+
+    if (Rslt != ERROR_SUCCESS)
+        goto exit;
+
+    Rslt = RegQueryValueExA( hKey, "ProductSuite", NULL, &Type, NULL, &Size );
+    if (Rslt != ERROR_SUCCESS || !Size)
+        goto exit;
+
+    ProductSuite = (LPSTR) LocalAlloc( LPTR, Size );
+    if (!ProductSuite)
+        goto exit;
+
+    Rslt = RegQueryValueExA( hKey, "ProductSuite", NULL, &Type,
+        (LPBYTE) ProductSuite, &Size );
+     if (Rslt != ERROR_SUCCESS || Type != REG_MULTI_SZ)
+        goto exit;
+
+    p = ProductSuite;
+    while (*p)
+    {
+        if (lstrcmpA( p, SuiteName ) == 0)
+        {
+            rVal = TRUE;
+            break;
+        }
+        p += (lstrlenA( p ) + 1);
+    }
+
+exit:
+    if (ProductSuite)
+        LocalFree( ProductSuite );
+
+    if (hKey)
+        RegCloseKey( hKey );
+
+    return rVal;
+}
+
+
 /**
  * This function terminates a process by process id instead of a handle.
  **/
@@ -655,16 +741,29 @@ GetAccountSid(
     return bSuccess;
 }
 
-
 // Suspend or resume the threads in a given process.
 // The only way to do this on Windows is to enumerate
 // all the threads in the entire system,
 // and find those belonging to the process (ugh!!)
 //
+
+// OpenThread
+typedef HANDLE (WINAPI *tOT)(DWORD dwDesiredAccess, BOOL bInheritHandle, DWORD dwThreadId);
+
 int suspend_or_resume_threads(DWORD pid, bool resume) { 
     HANDLE threads, thread;
+    HMODULE hKernel32Lib = NULL;
     THREADENTRY32 te = {0}; 
+    tOT pOT = NULL;
  
+    // Dynamically link to the proper function pointers.
+    hKernel32Lib = GetModuleHandleA("kernel32.dll");
+    pOT = (tOT) GetProcAddress( hKernel32Lib, "OpenThread" );
+
+    if (!pOT) {
+        return -1;
+    }
+
     threads = CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD, 0); 
     if (threads == INVALID_HANDLE_VALUE) return -1;
  
@@ -676,7 +775,7 @@ int suspend_or_resume_threads(DWORD pid, bool resume) {
 
     do { 
         if (te.th32OwnerProcessID == pid) {
-            thread = OpenThread(THREAD_SUSPEND_RESUME, FALSE, te.th32ThreadID);
+            thread = pOT(THREAD_SUSPEND_RESUME, FALSE, te.th32ThreadID);
             resume ?  ResumeThread(thread) : SuspendThread(thread);
             CloseHandle(thread);
         } 
@@ -687,9 +786,6 @@ int suspend_or_resume_threads(DWORD pid, bool resume) {
     return 0;
 } 
 
-
-// Change the current working directory to the data directory
-//
 void chdir_to_data_dir() {
 	LONG    lReturnValue;
 	HKEY    hkSetupHive;

lib/win_util.h

@@ -19,6 +19,7 @@
 
 extern BOOL IsWindows2000Compatible();
 extern BOOL IsTerminalServicesEnabled();
+extern BOOL ValidateProductSuite(LPSTR SuiteName);
 extern BOOL TerminateProcessById(DWORD dwProcessId);
 extern BOOL AddAceToWindowStation(HWINSTA hwinsta, PSID psid);
 extern BOOL AddAceToDesktop(HDESK hdesk, PSID psid);
@@ -27,7 +28,5 @@ extern BOOL GetAccountSid(
     LPCSTR AccountName,         // account of interest
     PSID *Sid                   // resultant buffer containing SID
 );
-
 extern int suspend_or_resume_threads(DWORD pid, bool resume);
 extern void chdir_to_data_dir();
-extern bool is_remote_desktop();