reactos/win32ss/printing/base/winspool/monitors.c

   1 /*
   2  * PROJECT:     ReactOS Spooler API
   3  * LICENSE:     GNU LGPL v2.1 or any later version as published by the Free Software Foundation
   4  * PURPOSE:     Functions related to Print Monitors
   5  * COPYRIGHT:   Copyright 2015 Colin Finck <colin@reactos.org>
   6  */
   7
   8 #include "precomp.h"
   9
  10 static void
  11 _MarshallUpMonitorInfo(PBYTE pMonitorInfo, DWORD Level)
  12 {
  13     PMONITOR_INFO_2W pMonitorInfo2 = (PMONITOR_INFO_2W)pMonitorInfo;        // MONITOR_INFO_1W is a subset of MONITOR_INFO_2W
  14
  15     // Replace relative offset addresses in the output by absolute pointers.
  16     pMonitorInfo2->pName = (PWSTR)((ULONG_PTR)pMonitorInfo2->pName + (ULONG_PTR)pMonitorInfo2);
  17
  18     if (Level == 2)
  19     {
  20         pMonitorInfo2->pDLLName = (PWSTR)((ULONG_PTR)pMonitorInfo2->pDLLName + (ULONG_PTR)pMonitorInfo2);
  21         pMonitorInfo2->pEnvironment = (PWSTR)((ULONG_PTR)pMonitorInfo2->pEnvironment + (ULONG_PTR)pMonitorInfo2);
  22     }
  23 }
  24
  25 BOOL WINAPI
  26 AddMonitorW(PWSTR pName, DWORD Level, PBYTE pMonitors)
  27 {
  28     UNIMPLEMENTED;
  29     return FALSE;
  30 }
  31
  32 BOOL WINAPI
  33 DeleteMonitorW(PWSTR pName, PWSTR pEnvironment, PWSTR pMonitorName)
  34 {
  35     UNIMPLEMENTED;
  36     return FALSE;
  37 }
  38
  39 BOOL WINAPI
  40 EnumMonitorsW(PWSTR pName, DWORD Level, PBYTE pMonitors, DWORD cbBuf, PDWORD pcbNeeded, PDWORD pcReturned)
  41 {
  42     DWORD dwErrorCode;
  43     DWORD i;
  44     PBYTE p = pMonitors;
  45
  46     // Do the RPC call
  47     RpcTryExcept
  48     {
  49         dwErrorCode = _RpcEnumMonitors(pName, Level, pMonitors, cbBuf, pcbNeeded, pcReturned);
  50     }
  51     RpcExcept(EXCEPTION_EXECUTE_HANDLER)
  52     {
  53         dwErrorCode = RpcExceptionCode();
  54         ERR("_RpcEnumPorts failed with exception code %lu!\n", dwErrorCode);
  55     }
  56     RpcEndExcept;
  57
  58     if (dwErrorCode == ERROR_SUCCESS)
  59     {
  60         // Replace relative offset addresses in the output by absolute pointers.
  61         for (i = 0; i < *pcReturned; i++)
  62         {
  63             _MarshallUpMonitorInfo(p, Level);
  64
  65             if (Level == 1)
  66                 p += sizeof(MONITOR_INFO_1W);
  67             else if (Level == 2)
  68                 p += sizeof(MONITOR_INFO_2W);
  69         }
  70     }
  71
  72     SetLastError(dwErrorCode);
  73     return (dwErrorCode == ERROR_SUCCESS);
  74 }