1477 lines
35 KiB
C
1477 lines
35 KiB
C
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/**
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* WinPR: Windows Portable Runtime
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* Serial Communication API
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*
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* Copyright 2011 O.S. Systems Software Ltda.
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* Copyright 2011 Eduardo Fiss Beloni <beloni@ossystems.com.br>
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* Copyright 2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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* Copyright 2014 Hewlett-Packard Development Company, L.P.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#if defined __linux__ && !defined ANDROID
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#include <assert.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <pthread.h>
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#include <stdarg.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <termios.h>
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#include <unistd.h>
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#include <winpr/crt.h>
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#include <winpr/comm.h>
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#include <winpr/tchar.h>
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#include <winpr/wlog.h>
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#include <winpr/handle.h>
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#include "comm_ioctl.h"
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/**
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* Communication Resources:
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* http://msdn.microsoft.com/en-us/library/windows/desktop/aa363196/
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*/
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#include "comm.h"
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static wLog* _Log = NULL;
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struct comm_device
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{
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LPTSTR name;
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LPTSTR path;
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};
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typedef struct comm_device COMM_DEVICE;
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/* FIXME: get a clever data structure, see also io.h functions */
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/* _CommDevices is a NULL-terminated array with a maximun of COMM_DEVICE_MAX COMM_DEVICE */
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#define COMM_DEVICE_MAX 128
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static COMM_DEVICE** _CommDevices = NULL;
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static CRITICAL_SECTION _CommDevicesLock;
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static HANDLE_CREATOR _CommHandleCreator;
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static pthread_once_t _CommInitialized = PTHREAD_ONCE_INIT;
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static int CommGetFd(HANDLE handle)
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{
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WINPR_COMM* comm = (WINPR_COMM*)handle;
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if (!CommIsHandled(handle))
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return -1;
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return comm->fd;
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}
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HANDLE_CREATOR* GetCommHandleCreator(void)
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{
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_CommHandleCreator.IsHandled = IsCommDevice;
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_CommHandleCreator.CreateFileA = CommCreateFileA;
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return &_CommHandleCreator;
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}
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static void _CommInit(void)
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{
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/* NB: error management to be done outside of this function */
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assert(_Log == NULL);
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assert(_CommDevices == NULL);
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_CommDevices = (COMM_DEVICE**)calloc(COMM_DEVICE_MAX + 1, sizeof(COMM_DEVICE*));
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if (!_CommDevices)
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return;
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if (!InitializeCriticalSectionEx(&_CommDevicesLock, 0, 0))
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{
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free(_CommDevices);
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_CommDevices = NULL;
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return;
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}
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_Log = WLog_Get("com.winpr.comm");
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assert(_Log != NULL);
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}
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/**
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* Returns TRUE when the comm module is correctly intialized, FALSE otherwise
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* with ERROR_DLL_INIT_FAILED set as the last error.
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*/
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static BOOL CommInitialized()
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{
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if (pthread_once(&_CommInitialized, _CommInit) != 0)
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{
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SetLastError(ERROR_DLL_INIT_FAILED);
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return FALSE;
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}
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return TRUE;
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}
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void CommLog_Print(DWORD level, ...)
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{
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if (!CommInitialized())
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return;
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va_list ap;
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va_start(ap, level);
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WLog_PrintVA(_Log, level, ap);
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va_end(ap);
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}
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BOOL BuildCommDCBA(LPCSTR lpDef, LPDCB lpDCB)
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{
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if (!CommInitialized())
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return FALSE;
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/* TODO: not implemented */
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CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
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SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
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return FALSE;
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}
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BOOL BuildCommDCBW(LPCWSTR lpDef, LPDCB lpDCB)
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{
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if (!CommInitialized())
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return FALSE;
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/* TODO: not implemented */
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CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
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SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
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return FALSE;
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}
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BOOL BuildCommDCBAndTimeoutsA(LPCSTR lpDef, LPDCB lpDCB, LPCOMMTIMEOUTS lpCommTimeouts)
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{
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if (!CommInitialized())
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return FALSE;
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/* TODO: not implemented */
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CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
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SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
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return FALSE;
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}
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BOOL BuildCommDCBAndTimeoutsW(LPCWSTR lpDef, LPDCB lpDCB, LPCOMMTIMEOUTS lpCommTimeouts)
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{
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if (!CommInitialized())
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return FALSE;
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/* TODO: not implemented */
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CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
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SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
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return FALSE;
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}
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BOOL CommConfigDialogA(LPCSTR lpszName, HWND hWnd, LPCOMMCONFIG lpCC)
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{
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if (!CommInitialized())
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return FALSE;
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/* TODO: not implemented */
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CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
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SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
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return FALSE;
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}
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BOOL CommConfigDialogW(LPCWSTR lpszName, HWND hWnd, LPCOMMCONFIG lpCC)
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{
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if (!CommInitialized())
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return FALSE;
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/* TODO: not implemented */
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CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
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SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
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return FALSE;
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}
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BOOL GetCommConfig(HANDLE hCommDev, LPCOMMCONFIG lpCC, LPDWORD lpdwSize)
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{
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WINPR_COMM* pComm = (WINPR_COMM*)hCommDev;
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if (!CommInitialized())
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return FALSE;
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/* TODO: not implemented */
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if (!pComm)
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return FALSE;
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CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
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SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
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return FALSE;
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}
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BOOL SetCommConfig(HANDLE hCommDev, LPCOMMCONFIG lpCC, DWORD dwSize)
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{
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WINPR_COMM* pComm = (WINPR_COMM*)hCommDev;
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if (!CommInitialized())
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return FALSE;
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/* TODO: not implemented */
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if (!pComm)
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return FALSE;
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CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
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SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
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return FALSE;
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}
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BOOL GetCommMask(HANDLE hFile, PDWORD lpEvtMask)
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{
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WINPR_COMM* pComm = (WINPR_COMM*)hFile;
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if (!CommInitialized())
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return FALSE;
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/* TODO: not implemented */
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if (!pComm)
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return FALSE;
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CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
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SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
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return FALSE;
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}
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BOOL SetCommMask(HANDLE hFile, DWORD dwEvtMask)
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{
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WINPR_COMM* pComm = (WINPR_COMM*)hFile;
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if (!CommInitialized())
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return FALSE;
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/* TODO: not implemented */
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if (!pComm)
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return FALSE;
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CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
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SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
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return FALSE;
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}
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BOOL GetCommModemStatus(HANDLE hFile, PDWORD lpModemStat)
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{
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WINPR_COMM* pComm = (WINPR_COMM*)hFile;
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if (!CommInitialized())
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return FALSE;
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/* TODO: not implemented */
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if (!pComm)
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return FALSE;
|
||
|
|
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CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
|
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SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
|
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return FALSE;
|
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}
|
||
|
|
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|
/**
|
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|
* ERRORS:
|
||
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* ERROR_DLL_INIT_FAILED
|
||
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* ERROR_INVALID_HANDLE
|
||
|
*/
|
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BOOL GetCommProperties(HANDLE hFile, LPCOMMPROP lpCommProp)
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{
|
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WINPR_COMM* pComm = (WINPR_COMM*)hFile;
|
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DWORD bytesReturned;
|
||
|
|
||
|
if (!CommInitialized())
|
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|
return FALSE;
|
||
|
|
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if (!pComm || pComm->Type != HANDLE_TYPE_COMM || !pComm->fd)
|
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{
|
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SetLastError(ERROR_INVALID_HANDLE);
|
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return FALSE;
|
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|
}
|
||
|
|
||
|
if (!CommDeviceIoControl(pComm, IOCTL_SERIAL_GET_PROPERTIES, NULL, 0, lpCommProp,
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sizeof(COMMPROP), &bytesReturned, NULL))
|
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|
{
|
||
|
CommLog_Print(WLOG_WARN, "GetCommProperties failure.");
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
*
|
||
|
*
|
||
|
* ERRORS:
|
||
|
* ERROR_INVALID_HANDLE
|
||
|
* ERROR_INVALID_DATA
|
||
|
* ERROR_IO_DEVICE
|
||
|
* ERROR_OUTOFMEMORY
|
||
|
*/
|
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BOOL GetCommState(HANDLE hFile, LPDCB lpDCB)
|
||
|
{
|
||
|
DCB* lpLocalDcb;
|
||
|
struct termios currentState;
|
||
|
WINPR_COMM* pComm = (WINPR_COMM*)hFile;
|
||
|
DWORD bytesReturned;
|
||
|
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
if (!pComm || pComm->Type != HANDLE_TYPE_COMM || !pComm->fd)
|
||
|
{
|
||
|
SetLastError(ERROR_INVALID_HANDLE);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
if (!lpDCB)
|
||
|
{
|
||
|
SetLastError(ERROR_INVALID_DATA);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
if (lpDCB->DCBlength < sizeof(DCB))
|
||
|
{
|
||
|
SetLastError(ERROR_INVALID_DATA);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
if (tcgetattr(pComm->fd, ¤tState) < 0)
|
||
|
{
|
||
|
SetLastError(ERROR_IO_DEVICE);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
lpLocalDcb = (DCB*)calloc(1, lpDCB->DCBlength);
|
||
|
|
||
|
if (lpLocalDcb == NULL)
|
||
|
{
|
||
|
SetLastError(ERROR_OUTOFMEMORY);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
/* error_handle */
|
||
|
lpLocalDcb->DCBlength = lpDCB->DCBlength;
|
||
|
SERIAL_BAUD_RATE baudRate;
|
||
|
|
||
|
if (!CommDeviceIoControl(pComm, IOCTL_SERIAL_GET_BAUD_RATE, NULL, 0, &baudRate,
|
||
|
sizeof(SERIAL_BAUD_RATE), &bytesReturned, NULL))
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "GetCommState failure: could not get the baud rate.");
|
||
|
goto error_handle;
|
||
|
}
|
||
|
|
||
|
lpLocalDcb->BaudRate = baudRate.BaudRate;
|
||
|
lpLocalDcb->fBinary = (currentState.c_cflag & ICANON) == 0;
|
||
|
|
||
|
if (!lpLocalDcb->fBinary)
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "Unexpected nonbinary mode, consider to unset the ICANON flag.");
|
||
|
}
|
||
|
|
||
|
lpLocalDcb->fParity = (currentState.c_iflag & INPCK) != 0;
|
||
|
SERIAL_HANDFLOW handflow;
|
||
|
|
||
|
if (!CommDeviceIoControl(pComm, IOCTL_SERIAL_GET_HANDFLOW, NULL, 0, &handflow,
|
||
|
sizeof(SERIAL_HANDFLOW), &bytesReturned, NULL))
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "GetCommState failure: could not get the handflow settings.");
|
||
|
goto error_handle;
|
||
|
}
|
||
|
|
||
|
lpLocalDcb->fOutxCtsFlow = (handflow.ControlHandShake & SERIAL_CTS_HANDSHAKE) != 0;
|
||
|
lpLocalDcb->fOutxDsrFlow = (handflow.ControlHandShake & SERIAL_DSR_HANDSHAKE) != 0;
|
||
|
|
||
|
if (handflow.ControlHandShake & SERIAL_DTR_HANDSHAKE)
|
||
|
{
|
||
|
lpLocalDcb->fDtrControl = DTR_CONTROL_HANDSHAKE;
|
||
|
}
|
||
|
else if (handflow.ControlHandShake & SERIAL_DTR_CONTROL)
|
||
|
{
|
||
|
lpLocalDcb->fDtrControl = DTR_CONTROL_ENABLE;
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
lpLocalDcb->fDtrControl = DTR_CONTROL_DISABLE;
|
||
|
}
|
||
|
|
||
|
lpLocalDcb->fDsrSensitivity = (handflow.ControlHandShake & SERIAL_DSR_SENSITIVITY) != 0;
|
||
|
lpLocalDcb->fTXContinueOnXoff = (handflow.FlowReplace & SERIAL_XOFF_CONTINUE) != 0;
|
||
|
lpLocalDcb->fOutX = (handflow.FlowReplace & SERIAL_AUTO_TRANSMIT) != 0;
|
||
|
lpLocalDcb->fInX = (handflow.FlowReplace & SERIAL_AUTO_RECEIVE) != 0;
|
||
|
lpLocalDcb->fErrorChar = (handflow.FlowReplace & SERIAL_ERROR_CHAR) != 0;
|
||
|
lpLocalDcb->fNull = (handflow.FlowReplace & SERIAL_NULL_STRIPPING) != 0;
|
||
|
|
||
|
if (handflow.FlowReplace & SERIAL_RTS_HANDSHAKE)
|
||
|
{
|
||
|
lpLocalDcb->fRtsControl = RTS_CONTROL_HANDSHAKE;
|
||
|
}
|
||
|
else if (handflow.FlowReplace & SERIAL_RTS_CONTROL)
|
||
|
{
|
||
|
lpLocalDcb->fRtsControl = RTS_CONTROL_ENABLE;
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
lpLocalDcb->fRtsControl = RTS_CONTROL_DISABLE;
|
||
|
}
|
||
|
|
||
|
// FIXME: how to get the RTS_CONTROL_TOGGLE state? Does it match the UART 16750's Autoflow
|
||
|
// Control Enabled bit in its Modem Control Register (MCR)
|
||
|
lpLocalDcb->fAbortOnError = (handflow.ControlHandShake & SERIAL_ERROR_ABORT) != 0;
|
||
|
/* lpLocalDcb->fDummy2 not used */
|
||
|
lpLocalDcb->wReserved = 0; /* must be zero */
|
||
|
lpLocalDcb->XonLim = handflow.XonLimit;
|
||
|
lpLocalDcb->XoffLim = handflow.XoffLimit;
|
||
|
SERIAL_LINE_CONTROL lineControl;
|
||
|
|
||
|
if (!CommDeviceIoControl(pComm, IOCTL_SERIAL_GET_LINE_CONTROL, NULL, 0, &lineControl,
|
||
|
sizeof(SERIAL_LINE_CONTROL), &bytesReturned, NULL))
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "GetCommState failure: could not get the control settings.");
|
||
|
goto error_handle;
|
||
|
}
|
||
|
|
||
|
lpLocalDcb->ByteSize = lineControl.WordLength;
|
||
|
lpLocalDcb->Parity = lineControl.Parity;
|
||
|
lpLocalDcb->StopBits = lineControl.StopBits;
|
||
|
SERIAL_CHARS serialChars;
|
||
|
|
||
|
if (!CommDeviceIoControl(pComm, IOCTL_SERIAL_GET_CHARS, NULL, 0, &serialChars,
|
||
|
sizeof(SERIAL_CHARS), &bytesReturned, NULL))
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "GetCommState failure: could not get the serial chars.");
|
||
|
goto error_handle;
|
||
|
}
|
||
|
|
||
|
lpLocalDcb->XonChar = serialChars.XonChar;
|
||
|
lpLocalDcb->XoffChar = serialChars.XoffChar;
|
||
|
lpLocalDcb->ErrorChar = serialChars.ErrorChar;
|
||
|
lpLocalDcb->EofChar = serialChars.EofChar;
|
||
|
lpLocalDcb->EvtChar = serialChars.EventChar;
|
||
|
memcpy(lpDCB, lpLocalDcb, lpDCB->DCBlength);
|
||
|
free(lpLocalDcb);
|
||
|
return TRUE;
|
||
|
error_handle:
|
||
|
free(lpLocalDcb);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @return TRUE on success, FALSE otherwise.
|
||
|
*
|
||
|
* As of today, SetCommState() can fail half-way with some settings
|
||
|
* applied and some others not. SetCommState() returns on the first
|
||
|
* failure met. FIXME: or is it correct?
|
||
|
*
|
||
|
* ERRORS:
|
||
|
* ERROR_INVALID_HANDLE
|
||
|
* ERROR_IO_DEVICE
|
||
|
*/
|
||
|
BOOL SetCommState(HANDLE hFile, LPDCB lpDCB)
|
||
|
{
|
||
|
struct termios upcomingTermios;
|
||
|
WINPR_COMM* pComm = (WINPR_COMM*)hFile;
|
||
|
DWORD bytesReturned;
|
||
|
|
||
|
/* FIXME: validate changes according GetCommProperties? */
|
||
|
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
if (!pComm || pComm->Type != HANDLE_TYPE_COMM || !pComm->fd)
|
||
|
{
|
||
|
SetLastError(ERROR_INVALID_HANDLE);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
if (!lpDCB)
|
||
|
{
|
||
|
SetLastError(ERROR_INVALID_DATA);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
/* NB: did the choice to call ioctls first when available and
|
||
|
then to setup upcomingTermios. Don't mix both stages. */
|
||
|
/** ioctl calls stage **/
|
||
|
SERIAL_BAUD_RATE baudRate;
|
||
|
baudRate.BaudRate = lpDCB->BaudRate;
|
||
|
|
||
|
if (!CommDeviceIoControl(pComm, IOCTL_SERIAL_SET_BAUD_RATE, &baudRate, sizeof(SERIAL_BAUD_RATE),
|
||
|
NULL, 0, &bytesReturned, NULL))
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "SetCommState failure: could not set the baud rate.");
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
SERIAL_CHARS serialChars;
|
||
|
|
||
|
if (!CommDeviceIoControl(pComm, IOCTL_SERIAL_GET_CHARS, NULL, 0, &serialChars,
|
||
|
sizeof(SERIAL_CHARS), &bytesReturned,
|
||
|
NULL)) /* as of today, required for BreakChar */
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "SetCommState failure: could not get the initial serial chars.");
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
serialChars.XonChar = lpDCB->XonChar;
|
||
|
serialChars.XoffChar = lpDCB->XoffChar;
|
||
|
serialChars.ErrorChar = lpDCB->ErrorChar;
|
||
|
serialChars.EofChar = lpDCB->EofChar;
|
||
|
serialChars.EventChar = lpDCB->EvtChar;
|
||
|
|
||
|
if (!CommDeviceIoControl(pComm, IOCTL_SERIAL_SET_CHARS, &serialChars, sizeof(SERIAL_CHARS),
|
||
|
NULL, 0, &bytesReturned, NULL))
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "SetCommState failure: could not set the serial chars.");
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
SERIAL_LINE_CONTROL lineControl;
|
||
|
lineControl.StopBits = lpDCB->StopBits;
|
||
|
lineControl.Parity = lpDCB->Parity;
|
||
|
lineControl.WordLength = lpDCB->ByteSize;
|
||
|
|
||
|
if (!CommDeviceIoControl(pComm, IOCTL_SERIAL_SET_LINE_CONTROL, &lineControl,
|
||
|
sizeof(SERIAL_LINE_CONTROL), NULL, 0, &bytesReturned, NULL))
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "SetCommState failure: could not set the control settings.");
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
SERIAL_HANDFLOW handflow;
|
||
|
ZeroMemory(&handflow, sizeof(SERIAL_HANDFLOW));
|
||
|
|
||
|
if (lpDCB->fOutxCtsFlow)
|
||
|
{
|
||
|
handflow.ControlHandShake |= SERIAL_CTS_HANDSHAKE;
|
||
|
}
|
||
|
|
||
|
if (lpDCB->fOutxDsrFlow)
|
||
|
{
|
||
|
handflow.ControlHandShake |= SERIAL_DSR_HANDSHAKE;
|
||
|
}
|
||
|
|
||
|
switch (lpDCB->fDtrControl)
|
||
|
{
|
||
|
case SERIAL_DTR_HANDSHAKE:
|
||
|
handflow.ControlHandShake |= DTR_CONTROL_HANDSHAKE;
|
||
|
break;
|
||
|
|
||
|
case SERIAL_DTR_CONTROL:
|
||
|
handflow.ControlHandShake |= DTR_CONTROL_ENABLE;
|
||
|
break;
|
||
|
|
||
|
case DTR_CONTROL_DISABLE:
|
||
|
/* do nothing since handflow is init-zeroed */
|
||
|
break;
|
||
|
|
||
|
default:
|
||
|
CommLog_Print(WLOG_WARN, "Unexpected fDtrControl value: %" PRIu32 "\n",
|
||
|
lpDCB->fDtrControl);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
if (lpDCB->fDsrSensitivity)
|
||
|
{
|
||
|
handflow.ControlHandShake |= SERIAL_DSR_SENSITIVITY;
|
||
|
}
|
||
|
|
||
|
if (lpDCB->fTXContinueOnXoff)
|
||
|
{
|
||
|
handflow.FlowReplace |= SERIAL_XOFF_CONTINUE;
|
||
|
}
|
||
|
|
||
|
if (lpDCB->fOutX)
|
||
|
{
|
||
|
handflow.FlowReplace |= SERIAL_AUTO_TRANSMIT;
|
||
|
}
|
||
|
|
||
|
if (lpDCB->fInX)
|
||
|
{
|
||
|
handflow.FlowReplace |= SERIAL_AUTO_RECEIVE;
|
||
|
}
|
||
|
|
||
|
if (lpDCB->fErrorChar)
|
||
|
{
|
||
|
handflow.FlowReplace |= SERIAL_ERROR_CHAR;
|
||
|
}
|
||
|
|
||
|
if (lpDCB->fNull)
|
||
|
{
|
||
|
handflow.FlowReplace |= SERIAL_NULL_STRIPPING;
|
||
|
}
|
||
|
|
||
|
switch (lpDCB->fRtsControl)
|
||
|
{
|
||
|
case RTS_CONTROL_TOGGLE:
|
||
|
CommLog_Print(WLOG_WARN, "Unsupported RTS_CONTROL_TOGGLE feature");
|
||
|
// FIXME: see also GetCommState()
|
||
|
return FALSE;
|
||
|
|
||
|
case RTS_CONTROL_HANDSHAKE:
|
||
|
handflow.FlowReplace |= SERIAL_RTS_HANDSHAKE;
|
||
|
break;
|
||
|
|
||
|
case RTS_CONTROL_ENABLE:
|
||
|
handflow.FlowReplace |= SERIAL_RTS_CONTROL;
|
||
|
break;
|
||
|
|
||
|
case RTS_CONTROL_DISABLE:
|
||
|
/* do nothing since handflow is init-zeroed */
|
||
|
break;
|
||
|
|
||
|
default:
|
||
|
CommLog_Print(WLOG_WARN, "Unexpected fRtsControl value: %" PRIu32 "\n",
|
||
|
lpDCB->fRtsControl);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
if (lpDCB->fAbortOnError)
|
||
|
{
|
||
|
handflow.ControlHandShake |= SERIAL_ERROR_ABORT;
|
||
|
}
|
||
|
|
||
|
/* lpDCB->fDummy2 not used */
|
||
|
/* lpLocalDcb->wReserved ignored */
|
||
|
handflow.XonLimit = lpDCB->XonLim;
|
||
|
handflow.XoffLimit = lpDCB->XoffLim;
|
||
|
|
||
|
if (!CommDeviceIoControl(pComm, IOCTL_SERIAL_SET_HANDFLOW, &handflow, sizeof(SERIAL_HANDFLOW),
|
||
|
NULL, 0, &bytesReturned, NULL))
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "SetCommState failure: could not set the handflow settings.");
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
/** upcomingTermios stage **/
|
||
|
ZeroMemory(&upcomingTermios, sizeof(struct termios));
|
||
|
|
||
|
if (tcgetattr(pComm->fd, &upcomingTermios) <
|
||
|
0) /* NB: preserves current settings not directly handled by the Communication Functions */
|
||
|
{
|
||
|
SetLastError(ERROR_IO_DEVICE);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
if (lpDCB->fBinary)
|
||
|
{
|
||
|
upcomingTermios.c_lflag &= ~ICANON;
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
upcomingTermios.c_lflag |= ICANON;
|
||
|
CommLog_Print(WLOG_WARN, "Unexpected nonbinary mode, consider to unset the ICANON flag.");
|
||
|
}
|
||
|
|
||
|
if (lpDCB->fParity)
|
||
|
{
|
||
|
upcomingTermios.c_iflag |= INPCK;
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
upcomingTermios.c_iflag &= ~INPCK;
|
||
|
}
|
||
|
|
||
|
/* http://msdn.microsoft.com/en-us/library/windows/desktop/aa363423%28v=vs.85%29.aspx
|
||
|
*
|
||
|
* The SetCommState function reconfigures the communications
|
||
|
* resource, but it does not affect the internal output and
|
||
|
* input buffers of the specified driver. The buffers are not
|
||
|
* flushed, and pending read and write operations are not
|
||
|
* terminated prematurely.
|
||
|
*
|
||
|
* TCSANOW matches the best this definition
|
||
|
*/
|
||
|
|
||
|
if (_comm_ioctl_tcsetattr(pComm->fd, TCSANOW, &upcomingTermios) < 0)
|
||
|
{
|
||
|
SetLastError(ERROR_IO_DEVICE);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* ERRORS:
|
||
|
* ERROR_INVALID_HANDLE
|
||
|
*/
|
||
|
BOOL GetCommTimeouts(HANDLE hFile, LPCOMMTIMEOUTS lpCommTimeouts)
|
||
|
{
|
||
|
WINPR_COMM* pComm = (WINPR_COMM*)hFile;
|
||
|
DWORD bytesReturned;
|
||
|
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
if (!pComm || pComm->Type != HANDLE_TYPE_COMM || !pComm->fd)
|
||
|
{
|
||
|
SetLastError(ERROR_INVALID_HANDLE);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
/* as of today, SERIAL_TIMEOUTS and COMMTIMEOUTS structures are identical */
|
||
|
|
||
|
if (!CommDeviceIoControl(pComm, IOCTL_SERIAL_GET_TIMEOUTS, NULL, 0, lpCommTimeouts,
|
||
|
sizeof(COMMTIMEOUTS), &bytesReturned, NULL))
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "GetCommTimeouts failure.");
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* ERRORS:
|
||
|
* ERROR_INVALID_HANDLE
|
||
|
*/
|
||
|
BOOL SetCommTimeouts(HANDLE hFile, LPCOMMTIMEOUTS lpCommTimeouts)
|
||
|
{
|
||
|
WINPR_COMM* pComm = (WINPR_COMM*)hFile;
|
||
|
DWORD bytesReturned;
|
||
|
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
if (!pComm || pComm->Type != HANDLE_TYPE_COMM || !pComm->fd)
|
||
|
{
|
||
|
SetLastError(ERROR_INVALID_HANDLE);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
/* as of today, SERIAL_TIMEOUTS and COMMTIMEOUTS structures are identical */
|
||
|
|
||
|
if (!CommDeviceIoControl(pComm, IOCTL_SERIAL_SET_TIMEOUTS, lpCommTimeouts, sizeof(COMMTIMEOUTS),
|
||
|
NULL, 0, &bytesReturned, NULL))
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "SetCommTimeouts failure.");
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
BOOL GetDefaultCommConfigA(LPCSTR lpszName, LPCOMMCONFIG lpCC, LPDWORD lpdwSize)
|
||
|
{
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
/* TODO: not implemented */
|
||
|
CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
|
||
|
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
BOOL GetDefaultCommConfigW(LPCWSTR lpszName, LPCOMMCONFIG lpCC, LPDWORD lpdwSize)
|
||
|
{
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
/* TODO: not implemented */
|
||
|
CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
|
||
|
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
BOOL SetDefaultCommConfigA(LPCSTR lpszName, LPCOMMCONFIG lpCC, DWORD dwSize)
|
||
|
{
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
/* TODO: not implemented */
|
||
|
CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
|
||
|
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
BOOL SetDefaultCommConfigW(LPCWSTR lpszName, LPCOMMCONFIG lpCC, DWORD dwSize)
|
||
|
{
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
/* TODO: not implemented */
|
||
|
CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
|
||
|
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
BOOL SetCommBreak(HANDLE hFile)
|
||
|
{
|
||
|
WINPR_COMM* pComm = (WINPR_COMM*)hFile;
|
||
|
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
/* TODO: not implemented */
|
||
|
|
||
|
if (!pComm)
|
||
|
return FALSE;
|
||
|
|
||
|
CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
|
||
|
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
BOOL ClearCommBreak(HANDLE hFile)
|
||
|
{
|
||
|
WINPR_COMM* pComm = (WINPR_COMM*)hFile;
|
||
|
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
/* TODO: not implemented */
|
||
|
|
||
|
if (!pComm)
|
||
|
return FALSE;
|
||
|
|
||
|
CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
|
||
|
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
BOOL ClearCommError(HANDLE hFile, PDWORD lpErrors, LPCOMSTAT lpStat)
|
||
|
{
|
||
|
WINPR_COMM* pComm = (WINPR_COMM*)hFile;
|
||
|
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
/* TODO: not implemented */
|
||
|
|
||
|
if (!pComm)
|
||
|
return FALSE;
|
||
|
|
||
|
CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
|
||
|
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
BOOL PurgeComm(HANDLE hFile, DWORD dwFlags)
|
||
|
{
|
||
|
WINPR_COMM* pComm = (WINPR_COMM*)hFile;
|
||
|
DWORD bytesReturned = 0;
|
||
|
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
if (!pComm || pComm->Type != HANDLE_TYPE_COMM || !pComm->fd)
|
||
|
{
|
||
|
SetLastError(ERROR_INVALID_HANDLE);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
if (!CommDeviceIoControl(pComm, IOCTL_SERIAL_PURGE, &dwFlags, sizeof(DWORD), NULL, 0,
|
||
|
&bytesReturned, NULL))
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "PurgeComm failure.");
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
BOOL SetupComm(HANDLE hFile, DWORD dwInQueue, DWORD dwOutQueue)
|
||
|
{
|
||
|
WINPR_COMM* pComm = (WINPR_COMM*)hFile;
|
||
|
SERIAL_QUEUE_SIZE queueSize;
|
||
|
DWORD bytesReturned = 0;
|
||
|
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
if (!pComm || pComm->Type != HANDLE_TYPE_COMM || !pComm->fd)
|
||
|
{
|
||
|
SetLastError(ERROR_INVALID_HANDLE);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
queueSize.InSize = dwInQueue;
|
||
|
queueSize.OutSize = dwOutQueue;
|
||
|
|
||
|
if (!CommDeviceIoControl(pComm, IOCTL_SERIAL_SET_QUEUE_SIZE, &queueSize,
|
||
|
sizeof(SERIAL_QUEUE_SIZE), NULL, 0, &bytesReturned, NULL))
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "SetCommTimeouts failure.");
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
BOOL EscapeCommFunction(HANDLE hFile, DWORD dwFunc)
|
||
|
{
|
||
|
WINPR_COMM* pComm = (WINPR_COMM*)hFile;
|
||
|
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
/* TODO: not implemented */
|
||
|
|
||
|
if (!pComm)
|
||
|
return FALSE;
|
||
|
|
||
|
CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
|
||
|
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
BOOL TransmitCommChar(HANDLE hFile, char cChar)
|
||
|
{
|
||
|
WINPR_COMM* pComm = (WINPR_COMM*)hFile;
|
||
|
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
/* TODO: not implemented */
|
||
|
|
||
|
if (!pComm)
|
||
|
return FALSE;
|
||
|
|
||
|
CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
|
||
|
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
BOOL WaitCommEvent(HANDLE hFile, PDWORD lpEvtMask, LPOVERLAPPED lpOverlapped)
|
||
|
{
|
||
|
WINPR_COMM* pComm = (WINPR_COMM*)hFile;
|
||
|
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
/* TODO: not implemented */
|
||
|
|
||
|
if (!pComm)
|
||
|
return FALSE;
|
||
|
|
||
|
CommLog_Print(WLOG_ERROR, "%s: Not implemented", __FUNCTION__);
|
||
|
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Returns TRUE on success, FALSE otherwise. To get extended error
|
||
|
* information, call GetLastError.
|
||
|
*
|
||
|
* ERRORS:
|
||
|
* ERROR_DLL_INIT_FAILED
|
||
|
* ERROR_OUTOFMEMORY was not possible to get mappings.
|
||
|
* ERROR_INVALID_DATA was not possible to add the device.
|
||
|
*/
|
||
|
BOOL DefineCommDevice(/* DWORD dwFlags,*/ LPCTSTR lpDeviceName, LPCTSTR lpTargetPath)
|
||
|
{
|
||
|
int i = 0;
|
||
|
LPTSTR storedDeviceName = NULL;
|
||
|
LPTSTR storedTargetPath = NULL;
|
||
|
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
EnterCriticalSection(&_CommDevicesLock);
|
||
|
|
||
|
if (_CommDevices == NULL)
|
||
|
{
|
||
|
SetLastError(ERROR_DLL_INIT_FAILED);
|
||
|
goto error_handle;
|
||
|
}
|
||
|
|
||
|
storedDeviceName = _tcsdup(lpDeviceName);
|
||
|
|
||
|
if (storedDeviceName == NULL)
|
||
|
{
|
||
|
SetLastError(ERROR_OUTOFMEMORY);
|
||
|
goto error_handle;
|
||
|
}
|
||
|
|
||
|
storedTargetPath = _tcsdup(lpTargetPath);
|
||
|
|
||
|
if (storedTargetPath == NULL)
|
||
|
{
|
||
|
SetLastError(ERROR_OUTOFMEMORY);
|
||
|
goto error_handle;
|
||
|
}
|
||
|
|
||
|
for (i = 0; i < COMM_DEVICE_MAX; i++)
|
||
|
{
|
||
|
if (_CommDevices[i] != NULL)
|
||
|
{
|
||
|
if (_tcscmp(_CommDevices[i]->name, storedDeviceName) == 0)
|
||
|
{
|
||
|
/* take over the emplacement */
|
||
|
free(_CommDevices[i]->name);
|
||
|
free(_CommDevices[i]->path);
|
||
|
_CommDevices[i]->name = storedDeviceName;
|
||
|
_CommDevices[i]->path = storedTargetPath;
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
/* new emplacement */
|
||
|
_CommDevices[i] = (COMM_DEVICE*)calloc(1, sizeof(COMM_DEVICE));
|
||
|
|
||
|
if (_CommDevices[i] == NULL)
|
||
|
{
|
||
|
SetLastError(ERROR_OUTOFMEMORY);
|
||
|
goto error_handle;
|
||
|
}
|
||
|
|
||
|
_CommDevices[i]->name = storedDeviceName;
|
||
|
_CommDevices[i]->path = storedTargetPath;
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (i == COMM_DEVICE_MAX)
|
||
|
{
|
||
|
SetLastError(ERROR_OUTOFMEMORY);
|
||
|
goto error_handle;
|
||
|
}
|
||
|
|
||
|
LeaveCriticalSection(&_CommDevicesLock);
|
||
|
return TRUE;
|
||
|
error_handle:
|
||
|
free(storedDeviceName);
|
||
|
free(storedTargetPath);
|
||
|
LeaveCriticalSection(&_CommDevicesLock);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Returns the number of target paths in the buffer pointed to by
|
||
|
* lpTargetPath.
|
||
|
*
|
||
|
* The current implementation returns in any case 0 and 1 target
|
||
|
* path. A NULL lpDeviceName is not supported yet to get all the
|
||
|
* paths.
|
||
|
*
|
||
|
* ERRORS:
|
||
|
* ERROR_SUCCESS
|
||
|
* ERROR_DLL_INIT_FAILED
|
||
|
* ERROR_OUTOFMEMORY was not possible to get mappings.
|
||
|
* ERROR_NOT_SUPPORTED equivalent QueryDosDevice feature not supported.
|
||
|
* ERROR_INVALID_DATA was not possible to retrieve any device information.
|
||
|
* ERROR_INSUFFICIENT_BUFFER too small lpTargetPath
|
||
|
*/
|
||
|
DWORD QueryCommDevice(LPCTSTR lpDeviceName, LPTSTR lpTargetPath, DWORD ucchMax)
|
||
|
{
|
||
|
int i;
|
||
|
LPTSTR storedTargetPath;
|
||
|
SetLastError(ERROR_SUCCESS);
|
||
|
|
||
|
if (!CommInitialized())
|
||
|
return 0;
|
||
|
|
||
|
if (_CommDevices == NULL)
|
||
|
{
|
||
|
SetLastError(ERROR_DLL_INIT_FAILED);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
if (lpDeviceName == NULL || lpTargetPath == NULL)
|
||
|
{
|
||
|
SetLastError(ERROR_NOT_SUPPORTED);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
EnterCriticalSection(&_CommDevicesLock);
|
||
|
storedTargetPath = NULL;
|
||
|
|
||
|
for (i = 0; i < COMM_DEVICE_MAX; i++)
|
||
|
{
|
||
|
if (_CommDevices[i] != NULL)
|
||
|
{
|
||
|
if (_tcscmp(_CommDevices[i]->name, lpDeviceName) == 0)
|
||
|
{
|
||
|
storedTargetPath = _CommDevices[i]->path;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
LeaveCriticalSection(&_CommDevicesLock);
|
||
|
|
||
|
if (storedTargetPath == NULL)
|
||
|
{
|
||
|
SetLastError(ERROR_INVALID_DATA);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
if (_tcslen(storedTargetPath) + 2 > ucchMax)
|
||
|
{
|
||
|
SetLastError(ERROR_INSUFFICIENT_BUFFER);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
_tcscpy(lpTargetPath, storedTargetPath);
|
||
|
lpTargetPath[_tcslen(storedTargetPath) + 1] = '\0'; /* 2nd final '\0' */
|
||
|
return _tcslen(lpTargetPath) + 2;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Checks whether lpDeviceName is a valid and registered Communication device.
|
||
|
*/
|
||
|
BOOL IsCommDevice(LPCTSTR lpDeviceName)
|
||
|
{
|
||
|
TCHAR lpTargetPath[MAX_PATH];
|
||
|
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
if (QueryCommDevice(lpDeviceName, lpTargetPath, MAX_PATH) > 0)
|
||
|
{
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Sets
|
||
|
*/
|
||
|
void _comm_setServerSerialDriver(HANDLE hComm, SERIAL_DRIVER_ID driverId)
|
||
|
{
|
||
|
ULONG Type;
|
||
|
WINPR_HANDLE* Object;
|
||
|
WINPR_COMM* pComm;
|
||
|
|
||
|
if (!CommInitialized())
|
||
|
return;
|
||
|
|
||
|
if (!winpr_Handle_GetInfo(hComm, &Type, &Object))
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "_comm_setServerSerialDriver failure");
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
pComm = (WINPR_COMM*)Object;
|
||
|
pComm->serverSerialDriverId = driverId;
|
||
|
}
|
||
|
|
||
|
static HANDLE_OPS ops = { CommIsHandled, CommCloseHandle,
|
||
|
CommGetFd, NULL, /* CleanupHandle */
|
||
|
NULL, NULL,
|
||
|
NULL, NULL,
|
||
|
NULL, NULL,
|
||
|
NULL, NULL,
|
||
|
NULL, NULL,
|
||
|
NULL, NULL,
|
||
|
NULL, NULL,
|
||
|
NULL, NULL };
|
||
|
|
||
|
/**
|
||
|
* http://msdn.microsoft.com/en-us/library/windows/desktop/aa363198%28v=vs.85%29.aspx
|
||
|
*
|
||
|
* @param lpDeviceName e.g. COM1, \\.\COM1, ...
|
||
|
*
|
||
|
* @param dwDesiredAccess expects GENERIC_READ | GENERIC_WRITE, a
|
||
|
* warning message is printed otherwise. TODO: better support.
|
||
|
*
|
||
|
* @param dwShareMode must be zero, INVALID_HANDLE_VALUE is returned
|
||
|
* otherwise and GetLastError() should return ERROR_SHARING_VIOLATION.
|
||
|
*
|
||
|
* @param lpSecurityAttributes NULL expected, a warning message is printed
|
||
|
* otherwise. TODO: better support.
|
||
|
*
|
||
|
* @param dwCreationDisposition must be OPEN_EXISTING. If the
|
||
|
* communication device doesn't exist INVALID_HANDLE_VALUE is returned
|
||
|
* and GetLastError() returns ERROR_FILE_NOT_FOUND.
|
||
|
*
|
||
|
* @param dwFlagsAndAttributes zero expected, a warning message is
|
||
|
* printed otherwise.
|
||
|
*
|
||
|
* @param hTemplateFile must be NULL.
|
||
|
*
|
||
|
* @return INVALID_HANDLE_VALUE on error.
|
||
|
*/
|
||
|
HANDLE CommCreateFileA(LPCSTR lpDeviceName, DWORD dwDesiredAccess, DWORD dwShareMode,
|
||
|
LPSECURITY_ATTRIBUTES lpSecurityAttributes, DWORD dwCreationDisposition,
|
||
|
DWORD dwFlagsAndAttributes, HANDLE hTemplateFile)
|
||
|
{
|
||
|
CHAR devicePath[MAX_PATH];
|
||
|
struct stat deviceStat;
|
||
|
WINPR_COMM* pComm = NULL;
|
||
|
struct termios upcomingTermios;
|
||
|
|
||
|
if (!CommInitialized())
|
||
|
return INVALID_HANDLE_VALUE;
|
||
|
|
||
|
if (dwDesiredAccess != (GENERIC_READ | GENERIC_WRITE))
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "unexpected access to the device: 0x%08" PRIX32 "",
|
||
|
dwDesiredAccess);
|
||
|
}
|
||
|
|
||
|
if (dwShareMode != 0)
|
||
|
{
|
||
|
SetLastError(ERROR_SHARING_VIOLATION);
|
||
|
return INVALID_HANDLE_VALUE;
|
||
|
}
|
||
|
|
||
|
/* TODO: Prevents other processes from opening a file or
|
||
|
* device if they request delete, read, or write access. */
|
||
|
|
||
|
if (lpSecurityAttributes != NULL)
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "unexpected security attributes, nLength=%" PRIu32 "",
|
||
|
lpSecurityAttributes->nLength);
|
||
|
}
|
||
|
|
||
|
if (dwCreationDisposition != OPEN_EXISTING)
|
||
|
{
|
||
|
SetLastError(ERROR_FILE_NOT_FOUND); /* FIXME: ERROR_NOT_SUPPORTED better? */
|
||
|
return INVALID_HANDLE_VALUE;
|
||
|
}
|
||
|
|
||
|
if (QueryCommDevice(lpDeviceName, devicePath, MAX_PATH) <= 0)
|
||
|
{
|
||
|
/* SetLastError(GetLastError()); */
|
||
|
return INVALID_HANDLE_VALUE;
|
||
|
}
|
||
|
|
||
|
if (stat(devicePath, &deviceStat) < 0)
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "device not found %s", devicePath);
|
||
|
SetLastError(ERROR_FILE_NOT_FOUND);
|
||
|
return INVALID_HANDLE_VALUE;
|
||
|
}
|
||
|
|
||
|
if (!S_ISCHR(deviceStat.st_mode))
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "bad device %s", devicePath);
|
||
|
SetLastError(ERROR_BAD_DEVICE);
|
||
|
return INVALID_HANDLE_VALUE;
|
||
|
}
|
||
|
|
||
|
if (dwFlagsAndAttributes != 0)
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "unexpected flags and attributes: 0x%08" PRIX32 "",
|
||
|
dwFlagsAndAttributes);
|
||
|
}
|
||
|
|
||
|
if (hTemplateFile != NULL)
|
||
|
{
|
||
|
SetLastError(ERROR_NOT_SUPPORTED); /* FIXME: other proper error? */
|
||
|
return INVALID_HANDLE_VALUE;
|
||
|
}
|
||
|
|
||
|
pComm = (WINPR_COMM*)calloc(1, sizeof(WINPR_COMM));
|
||
|
|
||
|
if (pComm == NULL)
|
||
|
{
|
||
|
SetLastError(ERROR_OUTOFMEMORY);
|
||
|
return INVALID_HANDLE_VALUE;
|
||
|
}
|
||
|
|
||
|
WINPR_HANDLE_SET_TYPE_AND_MODE(pComm, HANDLE_TYPE_COMM, WINPR_FD_READ);
|
||
|
pComm->ops = &ops;
|
||
|
/* error_handle */
|
||
|
pComm->fd = open(devicePath, O_RDWR | O_NOCTTY | O_NONBLOCK);
|
||
|
|
||
|
if (pComm->fd < 0)
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "failed to open device %s", devicePath);
|
||
|
SetLastError(ERROR_BAD_DEVICE);
|
||
|
goto error_handle;
|
||
|
}
|
||
|
|
||
|
pComm->fd_read = open(devicePath, O_RDONLY | O_NOCTTY | O_NONBLOCK);
|
||
|
|
||
|
if (pComm->fd_read < 0)
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "failed to open fd_read, device: %s", devicePath);
|
||
|
SetLastError(ERROR_BAD_DEVICE);
|
||
|
goto error_handle;
|
||
|
}
|
||
|
|
||
|
pComm->fd_read_event = eventfd(
|
||
|
0, EFD_NONBLOCK); /* EFD_NONBLOCK required because a read() is not always expected */
|
||
|
|
||
|
if (pComm->fd_read_event < 0)
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "failed to open fd_read_event, device: %s", devicePath);
|
||
|
SetLastError(ERROR_BAD_DEVICE);
|
||
|
goto error_handle;
|
||
|
}
|
||
|
|
||
|
InitializeCriticalSection(&pComm->ReadLock);
|
||
|
pComm->fd_write = open(devicePath, O_WRONLY | O_NOCTTY | O_NONBLOCK);
|
||
|
|
||
|
if (pComm->fd_write < 0)
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "failed to open fd_write, device: %s", devicePath);
|
||
|
SetLastError(ERROR_BAD_DEVICE);
|
||
|
goto error_handle;
|
||
|
}
|
||
|
|
||
|
pComm->fd_write_event = eventfd(
|
||
|
0, EFD_NONBLOCK); /* EFD_NONBLOCK required because a read() is not always expected */
|
||
|
|
||
|
if (pComm->fd_write_event < 0)
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "failed to open fd_write_event, device: %s", devicePath);
|
||
|
SetLastError(ERROR_BAD_DEVICE);
|
||
|
goto error_handle;
|
||
|
}
|
||
|
|
||
|
InitializeCriticalSection(&pComm->WriteLock);
|
||
|
/* can also be setup later on with _comm_setServerSerialDriver() */
|
||
|
pComm->serverSerialDriverId = SerialDriverUnknown;
|
||
|
InitializeCriticalSection(&pComm->EventsLock);
|
||
|
|
||
|
if (ioctl(pComm->fd, TIOCGICOUNT, &(pComm->counters)) < 0)
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "TIOCGICOUNT ioctl failed, errno=[%d] %s.", errno,
|
||
|
strerror(errno));
|
||
|
CommLog_Print(WLOG_WARN, "could not read counters.");
|
||
|
/* could not initialize counters but keep on.
|
||
|
*
|
||
|
* Not all drivers, especially for USB to serial
|
||
|
* adapters (e.g. those based on pl2303), does support
|
||
|
* this call.
|
||
|
*/
|
||
|
ZeroMemory(&(pComm->counters), sizeof(struct serial_icounter_struct));
|
||
|
}
|
||
|
|
||
|
/* The binary/raw mode is required for the redirection but
|
||
|
* only flags that are not handle somewhere-else, except
|
||
|
* ICANON, are forced here. */
|
||
|
ZeroMemory(&upcomingTermios, sizeof(struct termios));
|
||
|
|
||
|
if (tcgetattr(pComm->fd, &upcomingTermios) < 0)
|
||
|
{
|
||
|
SetLastError(ERROR_IO_DEVICE);
|
||
|
goto error_handle;
|
||
|
}
|
||
|
|
||
|
upcomingTermios.c_iflag &=
|
||
|
~(/*IGNBRK |*/ BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL /*| IXON*/);
|
||
|
upcomingTermios.c_oflag = 0; /* <=> &= ~OPOST */
|
||
|
upcomingTermios.c_lflag = 0; /* <=> &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN); */
|
||
|
/* upcomingTermios.c_cflag &= ~(CSIZE | PARENB); */
|
||
|
/* upcomingTermios.c_cflag |= CS8; */
|
||
|
/* About missing flags recommended by termios(3):
|
||
|
*
|
||
|
* IGNBRK and IXON, see: IOCTL_SERIAL_SET_HANDFLOW
|
||
|
* CSIZE, PARENB and CS8, see: IOCTL_SERIAL_SET_LINE_CONTROL
|
||
|
*/
|
||
|
/* a few more settings required for the redirection */
|
||
|
upcomingTermios.c_cflag |= CLOCAL | CREAD;
|
||
|
|
||
|
if (_comm_ioctl_tcsetattr(pComm->fd, TCSANOW, &upcomingTermios) < 0)
|
||
|
{
|
||
|
SetLastError(ERROR_IO_DEVICE);
|
||
|
goto error_handle;
|
||
|
}
|
||
|
|
||
|
return (HANDLE)pComm;
|
||
|
error_handle:
|
||
|
CloseHandle(pComm);
|
||
|
return INVALID_HANDLE_VALUE;
|
||
|
}
|
||
|
|
||
|
BOOL CommIsHandled(HANDLE handle)
|
||
|
{
|
||
|
WINPR_COMM* pComm;
|
||
|
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
pComm = (WINPR_COMM*)handle;
|
||
|
|
||
|
if (!pComm || (pComm->Type != HANDLE_TYPE_COMM) || (pComm == INVALID_HANDLE_VALUE))
|
||
|
{
|
||
|
SetLastError(ERROR_INVALID_HANDLE);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
BOOL CommCloseHandle(HANDLE handle)
|
||
|
{
|
||
|
WINPR_COMM* pComm;
|
||
|
|
||
|
if (!CommInitialized())
|
||
|
return FALSE;
|
||
|
|
||
|
pComm = (WINPR_COMM*)handle;
|
||
|
|
||
|
if (!pComm || pComm->Type != HANDLE_TYPE_COMM)
|
||
|
{
|
||
|
SetLastError(ERROR_INVALID_HANDLE);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
if (pComm->PendingEvents & SERIAL_EV_FREERDP_WAITING)
|
||
|
{
|
||
|
ULONG WaitMask = 0;
|
||
|
DWORD BytesReturned = 0;
|
||
|
|
||
|
/* ensures to gracefully stop the WAIT_ON_MASK's loop */
|
||
|
if (!CommDeviceIoControl(handle, IOCTL_SERIAL_SET_WAIT_MASK, &WaitMask, sizeof(ULONG), NULL,
|
||
|
0, &BytesReturned, NULL))
|
||
|
{
|
||
|
CommLog_Print(WLOG_WARN, "failure to WAIT_ON_MASK's loop!");
|
||
|
}
|
||
|
}
|
||
|
|
||
|
DeleteCriticalSection(&pComm->ReadLock);
|
||
|
DeleteCriticalSection(&pComm->WriteLock);
|
||
|
DeleteCriticalSection(&pComm->EventsLock);
|
||
|
|
||
|
if (pComm->fd > 0)
|
||
|
close(pComm->fd);
|
||
|
|
||
|
if (pComm->fd_write > 0)
|
||
|
close(pComm->fd_write);
|
||
|
|
||
|
if (pComm->fd_write_event > 0)
|
||
|
close(pComm->fd_write_event);
|
||
|
|
||
|
if (pComm->fd_read > 0)
|
||
|
close(pComm->fd_read);
|
||
|
|
||
|
if (pComm->fd_read_event > 0)
|
||
|
close(pComm->fd_read_event);
|
||
|
|
||
|
free(pComm);
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
#ifndef WITH_EVENTFD_READ_WRITE
|
||
|
int eventfd_read(int fd, eventfd_t* value)
|
||
|
{
|
||
|
return (read(fd, value, sizeof(*value)) == sizeof(*value)) ? 0 : -1;
|
||
|
}
|
||
|
|
||
|
int eventfd_write(int fd, eventfd_t value)
|
||
|
{
|
||
|
return (write(fd, &value, sizeof(value)) == sizeof(value)) ? 0 : -1;
|
||
|
}
|
||
|
#endif
|
||
|
|
||
|
#endif /* __linux__ */
|