+/*
+ * PROJECT: ReactOS Local Spooler
+ * LICENSE: GNU LGPL v2.1 or any later version as published by the Free Software Foundation
+ * PURPOSE: Functions related to Print Monitors
+ * COPYRIGHT: Copyright 2015 Colin Finck <colin@reactos.org>
+ */
+
+#include "precomp.h"
+
+// Local Variables
+LIST_ENTRY PrintMonitorList;
+
+BOOL
+InitializePrintMonitorList()
+{
+ const WCHAR wszMonitorsPath[] = L"SYSTEM\\CurrentControlSet\\Control\\Print\\Monitors";
+ const DWORD cchMonitorsPath = _countof(wszMonitorsPath) - 1;
+
+ DWORD cchMaxSubKey;
+ DWORD cchPrintMonitorName;
+ DWORD dwErrorCode;
+ DWORD dwSubKeys;
+ DWORD i;
+ HINSTANCE hinstPrintMonitor = NULL;
+ HKEY hKey = NULL;
+ HKEY hSubKey = NULL;
+ MONITORINIT MonitorInit;
+ PInitializePrintMonitor pfnInitializePrintMonitor;
+ PInitializePrintMonitor2 pfnInitializePrintMonitor2;
+ PLOCAL_PRINT_MONITOR pPrintMonitor = NULL;
+ PWSTR pwszRegistryPath = NULL;
+
+ // Initialize an empty list for our Print Monitors.
+ InitializeListHead(&PrintMonitorList);
+
+ // Open the key containing Print Monitors.
+ dwErrorCode = (DWORD)RegOpenKeyExW(HKEY_LOCAL_MACHINE, wszMonitorsPath, 0, KEY_READ, &hKey);
+ if (dwErrorCode != ERROR_SUCCESS)
+ {
+ ERR("RegOpenKeyExW failed with status %lu!\n", dwErrorCode);
+ goto Cleanup;
+ }
+
+ // Get the number of Print Providers and maximum sub key length.
+ dwErrorCode = (DWORD)RegQueryInfoKeyW(hKey, NULL, NULL, NULL, &dwSubKeys, &cchMaxSubKey, NULL, NULL, NULL, NULL, NULL, NULL);
+ if (dwErrorCode != ERROR_SUCCESS)
+ {
+ ERR("RegQueryInfoKeyW failed with status %lu!\n", dwErrorCode);
+ goto Cleanup;
+ }
+
+ // Loop through all available Print Providers.
+ for (i = 0; i < dwSubKeys; i++)
+ {
+ // Cleanup tasks from the previous run
+ if (hSubKey)
+ {
+ RegCloseKey(hSubKey);
+ hSubKey = NULL;
+ }
+
+ if (pwszRegistryPath)
+ {
+ DllFreeSplMem(pwszRegistryPath);
+ pwszRegistryPath = NULL;
+ }
+
+ if (pPrintMonitor)
+ {
+ if (pPrintMonitor->pwszFileName)
+ DllFreeSplMem(pPrintMonitor->pwszFileName);
+
+ if (pPrintMonitor->pwszName)
+ DllFreeSplMem(pPrintMonitor->pwszName);
+
+ DllFreeSplMem(pPrintMonitor);
+ pPrintMonitor = NULL;
+ }
+
+ // Create a new LOCAL_PRINT_MONITOR structure for it.
+ pPrintMonitor = DllAllocSplMem(sizeof(LOCAL_PRINT_MONITOR));
+ if (!pPrintMonitor)
+ {
+ dwErrorCode = ERROR_NOT_ENOUGH_MEMORY;
+ ERR("DllAllocSplMem failed with error %lu!\n", GetLastError());
+ goto Cleanup;
+ }
+
+ // Allocate memory for the Print Monitor Name.
+ pPrintMonitor->pwszName = DllAllocSplMem((cchMaxSubKey + 1) * sizeof(WCHAR));
+ if (!pPrintMonitor->pwszName)
+ {
+ dwErrorCode = ERROR_NOT_ENOUGH_MEMORY;
+ ERR("DllAllocSplMem failed with error %lu!\n", GetLastError());
+ goto Cleanup;
+ }
+
+ // Get the name of this Print Monitor.
+ cchPrintMonitorName = cchMaxSubKey + 1;
+ dwErrorCode = (DWORD)RegEnumKeyExW(hKey, i, pPrintMonitor->pwszName, &cchPrintMonitorName, NULL, NULL, NULL, NULL);
+ if (dwErrorCode != ERROR_SUCCESS)
+ {
+ ERR("RegEnumKeyExW failed for iteration %lu with status %lu!\n", i, dwErrorCode);
+ continue;
+ }
+
+ // Open this Print Monitor's registry key.
+ dwErrorCode = (DWORD)RegOpenKeyExW(hKey, pPrintMonitor->pwszName, 0, KEY_READ, &hSubKey);
+ if (dwErrorCode != ERROR_SUCCESS)
+ {
+ ERR("RegOpenKeyExW failed for Print Provider \"%S\" with status %lu!\n", pPrintMonitor->pwszName, dwErrorCode);
+ continue;
+ }
+
+ // Get the file name of the Print Monitor.
+ pPrintMonitor->pwszFileName = AllocAndRegQueryWSZ(hSubKey, L"Driver");
+ if (!pPrintMonitor->pwszFileName)
+ continue;
+
+ // Try to load it.
+ hinstPrintMonitor = LoadLibraryW(pPrintMonitor->pwszFileName);
+ if (!hinstPrintMonitor)
+ {
+ ERR("LoadLibraryW failed for \"%S\" with error %lu!\n", pPrintMonitor->pwszFileName, GetLastError());
+ continue;
+ }
+
+ // Try to find a Level 2 initialization routine first.
+ pfnInitializePrintMonitor2 = (PInitializePrintMonitor2)GetProcAddress(hinstPrintMonitor, "InitializePrintMonitor2");
+ if (pfnInitializePrintMonitor2)
+ {
+ // Prepare a MONITORINIT structure.
+ MonitorInit.cbSize = sizeof(MONITORINIT);
+ MonitorInit.bLocal = TRUE;
+
+ // TODO: Fill the other fields.
+
+ // Call the Level 2 initialization routine.
+ pPrintMonitor->pMonitor = (PMONITOR2)pfnInitializePrintMonitor2(&MonitorInit, &pPrintMonitor->hMonitor);
+ if (!pPrintMonitor->pMonitor)
+ {
+ ERR("InitializePrintMonitor2 failed for \"%S\" with error %lu!\n", pPrintMonitor->pwszFileName, GetLastError());
+ continue;
+ }
+
+ pPrintMonitor->bIsLevel2 = TRUE;
+ }
+ else
+ {
+ // Try to find a Level 1 initialization routine then.
+ pfnInitializePrintMonitor = (PInitializePrintMonitor)GetProcAddress(hinstPrintMonitor, "InitializePrintMonitor");
+ if (pfnInitializePrintMonitor)
+ {
+ // Construct the registry path.
+ pwszRegistryPath = DllAllocSplMem((cchMonitorsPath + 1 + cchPrintMonitorName + 1) * sizeof(WCHAR));
+ if (!pwszRegistryPath)
+ {
+ dwErrorCode = ERROR_NOT_ENOUGH_MEMORY;
+ ERR("DllAllocSplMem failed with error %lu!\n", GetLastError());
+ goto Cleanup;
+ }
+
+ CopyMemory(pwszRegistryPath, wszMonitorsPath, cchMonitorsPath * sizeof(WCHAR));
+ pwszRegistryPath[cchMonitorsPath] = L'\\';
+ CopyMemory(&pwszRegistryPath[cchMonitorsPath + 1], pPrintMonitor->pwszName, (cchPrintMonitorName + 1) * sizeof(WCHAR));
+
+ // Call the Level 1 initialization routine.
+ pPrintMonitor->pMonitor = (LPMONITOREX)pfnInitializePrintMonitor(pwszRegistryPath);
+ if (!pPrintMonitor->pMonitor)
+ {
+ ERR("InitializePrintMonitor failed for \"%S\" with error %lu!\n", pPrintMonitor->pwszFileName, GetLastError());
+ continue;
+ }
+ }
+ else
+ {
+ ERR("No initialization routine found for \"%S\"!\n", pPrintMonitor->pwszFileName);
+ continue;
+ }
+ }
+
+ // Add this Print Monitor to the list.
+ InsertTailList(&PrintMonitorList, &pPrintMonitor->Entry);
+
+ // Don't let the cleanup routine free this.
+ pPrintMonitor = NULL;
+ }
+
+ dwErrorCode = ERROR_SUCCESS;
+
+Cleanup:
+ // Inside the loop
+ if (hSubKey)
+ RegCloseKey(hSubKey);
+
+ if (pwszRegistryPath)
+ DllFreeSplMem(pwszRegistryPath);
+
+ if (pPrintMonitor)
+ {
+ if (pPrintMonitor->pwszFileName)
+ DllFreeSplMem(pPrintMonitor->pwszFileName);
+
+ if (pPrintMonitor->pwszName)
+ DllFreeSplMem(pPrintMonitor->pwszName);
+
+ DllFreeSplMem(pPrintMonitor);
+ }
+
+ // Outside the loop
+ if (hKey)
+ RegCloseKey(hKey);
+
+ SetLastError(dwErrorCode);
+ return (dwErrorCode == ERROR_SUCCESS);
+}
+
+BOOL WINAPI
+LocalEnumMonitors(PWSTR pName, DWORD Level, PBYTE pMonitors, DWORD cbBuf, PDWORD pcbNeeded, PDWORD pcReturned)
+{
+ DWORD cbFileName;
+ DWORD cbMonitorName;
+ DWORD dwErrorCode;
+ PBYTE pStart;
+ PBYTE pEnd;
+ PLIST_ENTRY pEntry;
+ PLOCAL_PRINT_MONITOR pPrintMonitor;
+ MONITOR_INFO_2W MonitorInfo2; // MONITOR_INFO_1W is a subset of MONITOR_INFO_2W, so we can handle both in one function here.
+
+ // Sanity checks.
+ if (Level > 2)
+ {
+ dwErrorCode = ERROR_INVALID_LEVEL;
+ goto Cleanup;
+ }
+
+ if ((cbBuf && !pMonitors) || !pcbNeeded || !pcReturned)
+ {
+ dwErrorCode = ERROR_INVALID_PARAMETER;
+ goto Cleanup;
+ }
+
+ // Begin counting.
+ *pcbNeeded = 0;
+ *pcReturned = 0;
+
+ // Count the required buffer size and the number of monitors.
+ for (pEntry = PrintMonitorList.Flink; pEntry != &PrintMonitorList; pEntry = pEntry->Flink)
+ {
+ pPrintMonitor = CONTAINING_RECORD(pEntry, LOCAL_PRINT_MONITOR, Entry);
+
+ cbMonitorName = (wcslen(pPrintMonitor->pwszName) + 1) * sizeof(WCHAR);
+ cbFileName = (wcslen(pPrintMonitor->pwszFileName) + 1) * sizeof(WCHAR);
+
+ if (Level == 1)
+ *pcbNeeded += sizeof(MONITOR_INFO_1W) + cbMonitorName;
+ else
+ *pcbNeeded += sizeof(MONITOR_INFO_2W) + cbMonitorName + cbCurrentEnvironment + cbFileName;
+ }
+
+ // Check if the supplied buffer is large enough.
+ if (cbBuf < *pcbNeeded)
+ {
+ dwErrorCode = ERROR_INSUFFICIENT_BUFFER;
+ goto Cleanup;
+ }
+
+ // Put the strings at the end of the buffer.
+ pStart = pMonitors;
+ pEnd = &pMonitors[cbBuf];
+
+ for (pEntry = PrintMonitorList.Flink; pEntry != &PrintMonitorList; pEntry = pEntry->Flink)
+ {
+ pPrintMonitor = CONTAINING_RECORD(pEntry, LOCAL_PRINT_MONITOR, Entry);
+
+ // Copy the monitor name.
+ cbMonitorName = (wcslen(pPrintMonitor->pwszName) + 1) * sizeof(WCHAR);
+ pEnd -= cbMonitorName;
+ MonitorInfo2.pName = (PWSTR)pEnd;
+ CopyMemory(pEnd, pPrintMonitor->pwszName, cbMonitorName);
+
+ if (Level == 1)
+ {
+ // Finally copy the structure.
+ CopyMemory(pStart, &MonitorInfo2, sizeof(MONITOR_INFO_1W));
+ pStart += sizeof(MONITOR_INFO_1W);
+ }
+ else
+ {
+ // Copy the environment.
+ pEnd -= cbCurrentEnvironment;
+ MonitorInfo2.pEnvironment = (PWSTR)pEnd;
+ CopyMemory(pEnd, wszCurrentEnvironment, cbCurrentEnvironment);
+
+ // Copy the file name.
+ cbFileName = (wcslen(pPrintMonitor->pwszFileName) + 1) * sizeof(WCHAR);
+ pEnd -= cbFileName;
+ MonitorInfo2.pDLLName = (PWSTR)pEnd;
+ CopyMemory(pEnd, pPrintMonitor->pwszFileName, cbFileName);
+
+ // Finally copy the structure.
+ CopyMemory(pStart, &MonitorInfo2, sizeof(MONITOR_INFO_2W));
+ pStart += sizeof(MONITOR_INFO_2W);
+ }
+
+ (*pcReturned)++;
+ }
+
+ dwErrorCode = ERROR_SUCCESS;
+
+Cleanup:
+ SetLastError(dwErrorCode);
+ return (dwErrorCode == ERROR_SUCCESS);
+}
projects / reactos.git / commitdiff