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https://github.com/reactos/reactos.git
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613 lines
18 KiB
C
613 lines
18 KiB
C
/*
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* PROJECT: ReactOS Local Port Monitor
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* LICENSE: GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
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* PURPOSE: Implementation of Xcv* and support functions
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* COPYRIGHT: Copyright 2015 Colin Finck (colin@reactos.org)
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*/
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#include "precomp.h"
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static DWORD
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_HandleAddPort(PLOCALMON_XCV pXcv, PBYTE pInputData, PDWORD pcbOutputNeeded)
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{
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DWORD res, cbPortName;
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HKEY hroot;
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HKEY hToken = NULL;
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PLOCALMON_PORT pPort;
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PLOCALMON_HANDLE pLocalmon = pXcv->pLocalmon;
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PWSTR PortName = (PWSTR)pInputData;
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FIXME("LcmXcvAddPort : %s\n", debugstr_w( (LPWSTR) PortName ) );
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if (!pLocalmon )
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{
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res = ERROR_INVALID_PARAMETER;
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goto Cleanup;
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}
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// This action can only happen at SERVER_ACCESS_ADMINISTER access level.
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if (!(pXcv->GrantedAccess & SERVER_ACCESS_ADMINISTER))
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{
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res = ERROR_ACCESS_DENIED;
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goto Cleanup;
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}
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// Switch to the SYSTEM context for modifying the registry.
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hToken = RevertToPrinterSelf();
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if (!hToken)
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{
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res = GetLastError();
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ERR("RevertToPrinterSelf failed with error %lu!\n", res);
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goto Cleanup;
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}
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res = RegOpenKeyW(HKEY_LOCAL_MACHINE, L"Software\\Microsoft\\Windows NT\\CurrentVersion\\Ports", &hroot);
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if (res == ERROR_SUCCESS)
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{
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if ( DoesPortExist( PortName ) )
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{
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RegCloseKey(hroot);
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FIXME("=> %u\n", ERROR_ALREADY_EXISTS);
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res = ERROR_ALREADY_EXISTS;
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goto Cleanup;
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}
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cbPortName = (wcslen( PortName ) + 1) * sizeof(WCHAR);
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// Create a new LOCALMON_PORT structure for it.
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pPort = DllAllocSplMem(sizeof(LOCALMON_PORT) + cbPortName);
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if (!pPort)
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{
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res = ERROR_NOT_ENOUGH_MEMORY;
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RegCloseKey( hroot );
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goto Cleanup;
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}
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memset( pPort, 0, sizeof(LOCALMON_PORT) + cbPortName );
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pPort->hFile = INVALID_HANDLE_VALUE;
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pPort->pLocalmon = pLocalmon;
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pPort->pwszPortName = wcscpy( (PWSTR)(pPort+1), PortName );
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// Insert it into the Registry list.
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InsertTailList(&pLocalmon->RegistryPorts, &pPort->Entry);
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res = RegSetValueExW(hroot, PortName, 0, REG_SZ, (const BYTE *) L"", sizeof(L""));
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RegCloseKey(hroot);
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}
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FIXME("=> %u\n", res);
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Cleanup:
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if (hToken) ImpersonatePrinterClient(hToken);
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SetLastError(res);
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return res;
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}
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/**
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* @name _HandleConfigureLPTPortCommandOK
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*
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* Writes the value for "TransmissionRetryTimeout" to the registry. Checks for granted SERVER_ACCESS_ADMINISTER access.
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* Actually the opposite of _HandleGetTransmissionRetryTimeout, but name kept for compatibility.
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*
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* @param pXcv
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* Pointer to the LOCALMON_XCV structure of the currently opened Xcv port.
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*
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* @param pInputData
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* Pointer to a Unicode string containing the value to be written to the registry.
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*
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* @param pcbOutputNeeded
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* Pointer to a DWORD that will be zeroed on return.
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*
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* @return
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* An error code indicating success or failure.
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*/
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static DWORD
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_HandleConfigureLPTPortCommandOK(PLOCALMON_XCV pXcv, PBYTE pInputData, PDWORD pcbOutputNeeded)
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{
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DWORD cbBuffer;
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DWORD dwErrorCode;
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HKEY hKey = NULL;
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HKEY hToken = NULL;
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// Sanity checks
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if (!pXcv || !pInputData || !pcbOutputNeeded)
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{
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dwErrorCode = ERROR_INVALID_PARAMETER;
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goto Cleanup;
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}
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*pcbOutputNeeded = 0;
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// This action can only happen at SERVER_ACCESS_ADMINISTER access level.
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if (!(pXcv->GrantedAccess & SERVER_ACCESS_ADMINISTER))
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{
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dwErrorCode = ERROR_ACCESS_DENIED;
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goto Cleanup;
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}
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// Switch to the SYSTEM context for modifying the registry.
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hToken = RevertToPrinterSelf();
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if (!hToken)
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{
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dwErrorCode = GetLastError();
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ERR("RevertToPrinterSelf failed with error %lu!\n", dwErrorCode);
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goto Cleanup;
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}
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// Open the key where our value is stored.
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dwErrorCode = (DWORD)RegOpenKeyExW(HKEY_LOCAL_MACHINE, L"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Windows", 0, KEY_SET_VALUE, &hKey);
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if (dwErrorCode != ERROR_SUCCESS)
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{
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ERR("RegOpenKeyExW failed with status %lu!\n", dwErrorCode);
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goto Cleanup;
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}
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// We don't use cbInputData here, because the buffer pInputData could be bigger than the data it contains.
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cbBuffer = (wcslen((PWSTR)pInputData) + 1) * sizeof(WCHAR);
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// Write the value to the registry.
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dwErrorCode = (DWORD)RegSetValueExW(hKey, L"TransmissionRetryTimeout", 0, REG_SZ, pInputData, cbBuffer);
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if (dwErrorCode != ERROR_SUCCESS)
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{
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ERR("RegSetValueExW failed with status %lu!\n", dwErrorCode);
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goto Cleanup;
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}
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Cleanup:
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if (hKey)
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RegCloseKey(hKey);
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if (hToken)
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ImpersonatePrinterClient(hToken);
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return dwErrorCode;
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}
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static DWORD
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_HandleDeletePort(PLOCALMON_XCV pXcv, PBYTE pInputData, PDWORD pcbOutputNeeded)
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{
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DWORD res;
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HKEY hroot;
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HKEY hToken = NULL;
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PLOCALMON_HANDLE pLocalmon = pXcv->pLocalmon;
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PLOCALMON_PORT pPort = NULL;
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PLIST_ENTRY pEntry;
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PWSTR pPortName = (PWSTR)pInputData;
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FIXME("LcmXcvDeletePort : %s\n", debugstr_w( pPortName ) );
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if (!pLocalmon )
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{
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res = ERROR_INVALID_PARAMETER;
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goto Cleanup;
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}
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// This action can only happen at SERVER_ACCESS_ADMINISTER access level.
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if (!(pXcv->GrantedAccess & SERVER_ACCESS_ADMINISTER))
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{
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res = ERROR_ACCESS_DENIED;
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goto Cleanup;
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}
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// Switch to the SYSTEM context for modifying the registry.
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hToken = RevertToPrinterSelf();
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if (!hToken)
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{
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res = GetLastError();
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ERR("RevertToPrinterSelf failed with error %lu!\n", res);
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goto Cleanup;
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}
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res = RegOpenKeyW(HKEY_LOCAL_MACHINE, L"Software\\Microsoft\\Windows NT\\CurrentVersion\\Ports", &hroot);
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if ( res == ERROR_SUCCESS )
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{
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res = RegDeleteValueW(hroot, pPortName );
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RegCloseKey(hroot);
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if ( res == ERROR_SUCCESS )
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{
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EnterCriticalSection(&pLocalmon->Section);
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if (!IsListEmpty(&pLocalmon->RegistryPorts) )
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{
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for (pEntry = pLocalmon->RegistryPorts.Flink; pEntry != &pLocalmon->RegistryPorts; pEntry = pEntry->Flink)
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{
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pPort = CONTAINING_RECORD(pEntry, LOCALMON_PORT, Entry);
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if (wcscmp(pPort->pwszPortName, pPortName) == 0)
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break;
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}
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}
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LeaveCriticalSection(&pLocalmon->Section);
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if ( pPort )
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{
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FIXME("LcmXcvDeletePort removed Port Entry\n");
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EnterCriticalSection(&pPort->pLocalmon->Section);
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RemoveEntryList(&pPort->Entry);
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LeaveCriticalSection(&pPort->pLocalmon->Section);
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DllFreeSplMem(pPort);
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}
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}
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FIXME("LcmXcvDeletePort => %u with %u\n", res, GetLastError() );
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}
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Cleanup:
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if (hToken) ImpersonatePrinterClient(hToken);
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SetLastError(res);
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return res;
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}
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/**
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* @name _HandleGetDefaultCommConfig
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*
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* Gets the default configuration of a legacy port.
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* The opposite function is _HandleSetDefaultCommConfig.
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*
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* @param pInputData
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* The port name (without colon!) whose default configuration you want to get.
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*
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* @param pOutputData
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* Pointer to a COMMCONFIG structure that will receive the configuration information.
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*
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* @param cbOutputData
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* Size of the variable pointed to by pOutputData.
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*
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* @param pcbOutputNeeded
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* Pointer to a DWORD that contains the required size for pOutputData on return.
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*
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* @return
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* An error code indicating success or failure.
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*/
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static DWORD
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_HandleGetDefaultCommConfig(PBYTE pInputData, PBYTE pOutputData, DWORD cbOutputData, PDWORD pcbOutputNeeded)
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{
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// Sanity checks
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if (!pInputData || !pcbOutputNeeded)
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return ERROR_INVALID_PARAMETER;
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*pcbOutputNeeded = sizeof(COMMCONFIG);
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// Check if the supplied buffer is large enough.
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if (cbOutputData < *pcbOutputNeeded)
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return ERROR_INSUFFICIENT_BUFFER;
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// Finally get the port configuration.
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if (!GetDefaultCommConfigW((PCWSTR)pInputData, (LPCOMMCONFIG)pOutputData, pcbOutputNeeded))
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return GetLastError();
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return ERROR_SUCCESS;
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}
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/**
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* @name _HandleGetTransmissionRetryTimeout
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*
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* Reads the value for "TransmissionRetryTimeout" from the registry and converts it to a DWORD.
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* The opposite function is _HandleConfigureLPTPortCommandOK.
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*
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* @param pOutputData
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* Pointer to a DWORD that will receive the timeout value.
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*
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* @param cbOutputData
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* Size of the variable pointed to by pOutputData.
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*
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* @param pcbOutputNeeded
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* Pointer to a DWORD that contains the required size for pOutputData on return.
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*
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* @return
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* An error code indicating success or failure.
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*/
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static DWORD
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_HandleGetTransmissionRetryTimeout(PBYTE pOutputData, DWORD cbOutputData, PDWORD pcbOutputNeeded)
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{
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DWORD dwTimeout;
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// Sanity checks
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if (!pOutputData || !pcbOutputNeeded)
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return ERROR_INVALID_PARAMETER;
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*pcbOutputNeeded = sizeof(DWORD);
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// Check if the supplied buffer is large enough.
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if (cbOutputData < *pcbOutputNeeded)
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return ERROR_INSUFFICIENT_BUFFER;
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// Retrieve and copy the number.
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dwTimeout = GetLPTTransmissionRetryTimeout();
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CopyMemory(pOutputData, &dwTimeout, sizeof(DWORD));
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return ERROR_SUCCESS;
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}
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/**
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* @name _HandleMonitorUI
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*
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* Returns the filename of the associated UI DLL for this Port Monitor.
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*
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* @param pOutputData
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* Pointer to a Unicode string that will receive the DLL filename.
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*
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* @param cbOutputData
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* Size of the variable pointed to by pOutputData.
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*
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* @param pcbOutputNeeded
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* Pointer to a DWORD that contains the required size for pOutputData on return.
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*
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* @return
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* An error code indicating success or failure.
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*/
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static DWORD
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_HandleMonitorUI(PBYTE pOutputData, DWORD cbOutputData, PDWORD pcbOutputNeeded)
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{
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const WCHAR wszMonitorUI[] = L"LocalUI.dll";
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// Sanity checks
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if (!pcbOutputNeeded)
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return ERROR_INVALID_PARAMETER;
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*pcbOutputNeeded = sizeof(wszMonitorUI);
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// Check if the supplied buffer is large enough.
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if (cbOutputData < *pcbOutputNeeded)
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return ERROR_INSUFFICIENT_BUFFER;
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if (!pOutputData)
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return ERROR_INVALID_PARAMETER;
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// Copy the string.
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CopyMemory(pOutputData, wszMonitorUI, sizeof(wszMonitorUI));
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return ERROR_SUCCESS;
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}
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/**
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* @name _HandlePortExists
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*
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* Checks all Port Monitors installed on the local system to find out if a given port already exists.
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*
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* @param pInputData
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* Pointer to a Unicode string specifying the port name to check.
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*
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* @param pOutputData
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* Pointer to a BOOL that receives the result of the check.
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*
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* @param cbOutputData
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* Size of the variable pointed to by pOutputData.
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*
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* @param pcbOutputNeeded
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* Pointer to a DWORD that contains the required size for pOutputData on return.
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*
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* @return
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* An error code indicating success or failure.
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*/
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static DWORD
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_HandlePortExists(PBYTE pInputData, PBYTE pOutputData, DWORD cbOutputData, PDWORD pcbOutputNeeded)
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{
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// Sanity checks
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if (!pInputData || !pOutputData || !pcbOutputNeeded)
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return ERROR_INVALID_PARAMETER;
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*pcbOutputNeeded = sizeof(BOOL);
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// Check if the supplied buffer is large enough.
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if (cbOutputData < *pcbOutputNeeded)
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return ERROR_INSUFFICIENT_BUFFER;
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// Return the check result and error code.
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*(PBOOL)pOutputData = DoesPortExist((PCWSTR)pInputData);
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return GetLastError();
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}
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static DWORD
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_HandlePortIsValid(PBYTE pInputData, PBYTE pOutputData, DWORD cbOutputData, PDWORD pcbOutputNeeded)
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{
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DWORD res;
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TRACE("HandlePortIsValid : pInputData %s\n", debugstr_w( (LPWSTR) pInputData));
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res = GetTypeFromName((LPCWSTR) pInputData);
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TRACE("HandlePortIsValid : detected as %u\n", res);
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/* names, that we have recognized, are valid */
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if (res) return ERROR_SUCCESS;
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TRACE("=> %u\n", GetLastError());
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/* ERROR_ACCESS_DENIED, ERROR_PATH_NOT_FOUND or something else */
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return GetLastError();
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}
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/**
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* @name _HandleSetDefaultCommConfig
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*
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* Sets the default configuration of a legacy port. Checks for granted SERVER_ACCESS_ADMINISTER access.
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* You have to supply the port name (with colon!) in XcvOpenPort.
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* The opposite function is _HandleGetDefaultCommConfig.
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*
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* @param pXcv
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* Pointer to the LOCALMON_XCV structure of the currently opened Xcv port.
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*
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* @param pInputData
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* Pointer to the COMMCONFIG structure that shall be passed to SetDefaultCommConfigW.
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*
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* @param pcbOutputNeeded
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* Pointer to a DWORD that will be zeroed on return.
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*
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* @return
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* An error code indicating success or failure.
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*/
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static DWORD
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_HandleSetDefaultCommConfig(PLOCALMON_XCV pXcv, PBYTE pInputData, PDWORD pcbOutputNeeded)
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{
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DWORD dwErrorCode;
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HANDLE hToken = NULL;
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LPCOMMCONFIG pCommConfig;
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PWSTR pwszPortNameWithoutColon = NULL;
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// Sanity checks
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// pwszObject needs to be at least 2 characters long to be a port name with a trailing colon.
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if (!pXcv || !pXcv->pwszObject || !pXcv->pwszObject[0] || !pXcv->pwszObject[1] || !pInputData || !pcbOutputNeeded)
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{
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dwErrorCode = ERROR_INVALID_PARAMETER;
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goto Cleanup;
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}
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*pcbOutputNeeded = 0;
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// This action can only happen at SERVER_ACCESS_ADMINISTER access level.
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if (!(pXcv->GrantedAccess & SERVER_ACCESS_ADMINISTER))
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{
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dwErrorCode = ERROR_ACCESS_DENIED;
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goto Cleanup;
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}
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// SetDefaultCommConfigW needs the port name without colon.
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dwErrorCode = GetPortNameWithoutColon(pXcv->pwszObject, &pwszPortNameWithoutColon);
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if (dwErrorCode != ERROR_SUCCESS)
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goto Cleanup;
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// Switch to the SYSTEM context for setting the port configuration.
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hToken = RevertToPrinterSelf();
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if (!hToken)
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{
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dwErrorCode = GetLastError();
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ERR("RevertToPrinterSelf failed with error %lu!\n", dwErrorCode);
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goto Cleanup;
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}
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// Finally pass the parameters to SetDefaultCommConfigW.
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pCommConfig = (LPCOMMCONFIG)pInputData;
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if (!SetDefaultCommConfigW(pwszPortNameWithoutColon, pCommConfig, pCommConfig->dwSize))
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{
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dwErrorCode = GetLastError();
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ERR("SetDefaultCommConfigW failed with error %lu!\n", dwErrorCode);
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goto Cleanup;
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}
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dwErrorCode = ERROR_SUCCESS;
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Cleanup:
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if (hToken)
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ImpersonatePrinterClient(hToken);
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if (pwszPortNameWithoutColon)
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DllFreeSplMem(pwszPortNameWithoutColon);
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return dwErrorCode;
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}
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BOOL WINAPI
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LocalmonXcvClosePort(HANDLE hXcv)
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{
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PLOCALMON_XCV pXcv = (PLOCALMON_XCV)hXcv;
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TRACE("LocalmonXcvClosePort(%p)\n", hXcv);
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// Sanity checks
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if (!pXcv)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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// Remove it from the list and free the memory.
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EnterCriticalSection(&pXcv->pLocalmon->Section);
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RemoveEntryList(&pXcv->Entry);
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LeaveCriticalSection(&pXcv->pLocalmon->Section);
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DllFreeSplMem(pXcv);
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SetLastError(ERROR_SUCCESS);
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return TRUE;
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}
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DWORD WINAPI
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LocalmonXcvDataPort(HANDLE hXcv, PCWSTR pszDataName, PBYTE pInputData, DWORD cbInputData, PBYTE pOutputData, DWORD cbOutputData, PDWORD pcbOutputNeeded)
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{
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FIXME("LocalmonXcvDataPort(%p, %S, %p, %lu, %p, %lu, %p)\n", hXcv, pszDataName, pInputData, cbInputData, pOutputData, cbOutputData, pcbOutputNeeded);
|
|
|
|
// Sanity checks
|
|
if (!pszDataName)
|
|
return ERROR_INVALID_PARAMETER;
|
|
|
|
// Call the appropriate handler for the requested data name.
|
|
if (wcscmp(pszDataName, L"AddPort") == 0)
|
|
return _HandleAddPort((PLOCALMON_XCV)hXcv, pInputData, pcbOutputNeeded);
|
|
|
|
if (wcscmp(pszDataName, L"ConfigureLPTPortCommandOK") == 0)
|
|
return _HandleConfigureLPTPortCommandOK((PLOCALMON_XCV)hXcv, pInputData, pcbOutputNeeded);
|
|
|
|
if (wcscmp(pszDataName, L"DeletePort") == 0)
|
|
return _HandleDeletePort((PLOCALMON_XCV)hXcv, pInputData, pcbOutputNeeded);
|
|
|
|
if (wcscmp(pszDataName, L"GetDefaultCommConfig") == 0)
|
|
return _HandleGetDefaultCommConfig(pInputData, pOutputData, cbOutputData, pcbOutputNeeded);
|
|
|
|
if (wcscmp(pszDataName, L"GetTransmissionRetryTimeout") == 0)
|
|
return _HandleGetTransmissionRetryTimeout(pOutputData, cbOutputData, pcbOutputNeeded);
|
|
|
|
if (wcscmp(pszDataName, L"MonitorUI") == 0)
|
|
return _HandleMonitorUI(pOutputData, cbOutputData, pcbOutputNeeded);
|
|
|
|
if (wcscmp(pszDataName, L"PortExists") == 0)
|
|
return _HandlePortExists(pInputData, pOutputData, cbOutputData, pcbOutputNeeded);
|
|
|
|
if (wcscmp(pszDataName, L"PortIsValid") == 0)
|
|
return _HandlePortIsValid(pInputData, pOutputData, cbOutputData, pcbOutputNeeded);
|
|
|
|
if (wcscmp(pszDataName, L"SetDefaultCommConfig") == 0)
|
|
return _HandleSetDefaultCommConfig((PLOCALMON_XCV)hXcv, pInputData, pcbOutputNeeded);
|
|
|
|
return ERROR_INVALID_PARAMETER;
|
|
}
|
|
|
|
BOOL WINAPI
|
|
LocalmonXcvOpenPort(HANDLE hMonitor, PCWSTR pwszObject, ACCESS_MASK GrantedAccess, PHANDLE phXcv)
|
|
{
|
|
DWORD cbObject = 0;
|
|
DWORD dwErrorCode;
|
|
PLOCALMON_HANDLE pLocalmon = (PLOCALMON_HANDLE)hMonitor;
|
|
PLOCALMON_XCV pXcv;
|
|
|
|
FIXME("LocalmonXcvOpenPort(%p, %S, %lu, %p)\n", hMonitor, pwszObject, GrantedAccess, phXcv);
|
|
|
|
// Sanity checks
|
|
if (!pLocalmon || !phXcv)
|
|
{
|
|
dwErrorCode = ERROR_INVALID_PARAMETER;
|
|
goto Cleanup;
|
|
}
|
|
|
|
if (pwszObject)
|
|
cbObject = (wcslen(pwszObject) + 1) * sizeof(WCHAR);
|
|
|
|
// Create a new LOCALMON_XCV structure and fill the relevant fields.
|
|
pXcv = DllAllocSplMem(sizeof(LOCALMON_XCV) + cbObject);
|
|
if (!pXcv)
|
|
{
|
|
dwErrorCode = ERROR_NOT_ENOUGH_MEMORY;
|
|
ERR("DllAllocSplMem failed with error %lu!\n", GetLastError());
|
|
goto Cleanup;
|
|
}
|
|
|
|
pXcv->pLocalmon = pLocalmon;
|
|
pXcv->GrantedAccess = GrantedAccess;
|
|
|
|
if (cbObject)
|
|
{
|
|
pXcv->pwszObject = (PWSTR)((PBYTE)pXcv + sizeof(LOCALMON_XCV));
|
|
CopyMemory(pXcv->pwszObject, pwszObject, cbObject);
|
|
}
|
|
|
|
InsertTailList(&pLocalmon->XcvHandles, &pXcv->Entry);
|
|
|
|
// Return it as the Xcv handle.
|
|
*phXcv = (HANDLE)pXcv;
|
|
dwErrorCode = ERROR_SUCCESS;
|
|
|
|
Cleanup:
|
|
SetLastError(dwErrorCode);
|
|
return (dwErrorCode == ERROR_SUCCESS);
|
|
}
|