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wine/dlls/kernel32/comm.c

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/*
* DEC 93 Erik Bos <erik@xs4all.nl>
*
* Copyright 1996 Marcus Meissner
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "winioctl.h"
#include "ddk/ntddser.h"
#include "wine/server.h"
#include "wine/unicode.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(comm);
/***********************************************************************
* COMM_Parse* (Internal)
*
* The following COMM_Parse* functions are used by the BuildCommDCB
* functions to help parse the various parts of the device control string.
*/
static LPCWSTR COMM_ParseStart(LPCWSTR ptr)
{
static const WCHAR comW[] = {'C','O','M',0};
/* The device control string may optionally start with "COMx" followed
by an optional ':' and spaces. */
if(!strncmpiW(ptr, comW, 3))
{
ptr += 3;
/* Allow any com port above 0 as Win 9x does (NT only allows
values for com ports which are actually present) */
if(*ptr < '1' || *ptr > '9')
return NULL;
/* Advance pointer past port number */
while(*ptr >= '0' && *ptr <= '9') ptr++;
/* The com port number must be followed by a ':' or ' ' */
if(*ptr != ':' && *ptr != ' ')
return NULL;
/* Advance pointer to beginning of next parameter */
while(*ptr == ' ') ptr++;
if(*ptr == ':')
{
ptr++;
while(*ptr == ' ') ptr++;
}
}
/* The device control string must not start with a space. */
else if(*ptr == ' ')
return NULL;
return ptr;
}
static LPCWSTR COMM_ParseNumber(LPCWSTR ptr, LPDWORD lpnumber)
{
if(*ptr < '0' || *ptr > '9') return NULL;
*lpnumber = strtoulW(ptr, NULL, 10);
while(*ptr >= '0' && *ptr <= '9') ptr++;
return ptr;
}
static LPCWSTR COMM_ParseParity(LPCWSTR ptr, LPBYTE lpparity)
{
/* Contrary to what you might expect, Windows only sets the Parity
member of DCB and not fParity even when parity is specified in the
device control string */
switch(toupperW(*ptr++))
{
case 'E':
*lpparity = EVENPARITY;
break;
case 'M':
*lpparity = MARKPARITY;
break;
case 'N':
*lpparity = NOPARITY;
break;
case 'O':
*lpparity = ODDPARITY;
break;
case 'S':
*lpparity = SPACEPARITY;
break;
default:
return NULL;
}
return ptr;
}
static LPCWSTR COMM_ParseByteSize(LPCWSTR ptr, LPBYTE lpbytesize)
{
DWORD temp;
if(!(ptr = COMM_ParseNumber(ptr, &temp)))
return NULL;
if(temp >= 5 && temp <= 8)
{
*lpbytesize = temp;
return ptr;
}
else
return NULL;
}
static LPCWSTR COMM_ParseStopBits(LPCWSTR ptr, LPBYTE lpstopbits)
{
DWORD temp;
static const WCHAR stopbits15W[] = {'1','.','5',0};
if(!strncmpW(stopbits15W, ptr, 3))
{
ptr += 3;
*lpstopbits = ONE5STOPBITS;
}
else
{
if(!(ptr = COMM_ParseNumber(ptr, &temp)))
return NULL;
if(temp == 1)
*lpstopbits = ONESTOPBIT;
else if(temp == 2)
*lpstopbits = TWOSTOPBITS;
else
return NULL;
}
return ptr;
}
static LPCWSTR COMM_ParseOnOff(LPCWSTR ptr, LPDWORD lponoff)
{
static const WCHAR onW[] = {'o','n',0};
static const WCHAR offW[] = {'o','f','f',0};
if(!strncmpiW(onW, ptr, 2))
{
ptr += 2;
*lponoff = 1;
}
else if(!strncmpiW(offW, ptr, 3))
{
ptr += 3;
*lponoff = 0;
}
else
return NULL;
return ptr;
}
/***********************************************************************
* COMM_BuildOldCommDCB (Internal)
*
* Build a DCB using the old style settings string eg: "96,n,8,1"
*/
static BOOL COMM_BuildOldCommDCB(LPCWSTR device, LPDCB lpdcb)
{
WCHAR last = 0;
if(!(device = COMM_ParseNumber(device, &lpdcb->BaudRate)))
return FALSE;
switch(lpdcb->BaudRate)
{
case 11:
case 30:
case 60:
lpdcb->BaudRate *= 10;
break;
case 12:
case 24:
case 48:
case 96:
lpdcb->BaudRate *= 100;
break;
case 19:
lpdcb->BaudRate = 19200;
break;
}
while(*device == ' ') device++;
if(*device++ != ',') return FALSE;
while(*device == ' ') device++;
if(!(device = COMM_ParseParity(device, &lpdcb->Parity)))
return FALSE;
while(*device == ' ') device++;
if(*device++ != ',') return FALSE;
while(*device == ' ') device++;
if(!(device = COMM_ParseByteSize(device, &lpdcb->ByteSize)))
return FALSE;
while(*device == ' ') device++;
if(*device++ != ',') return FALSE;
while(*device == ' ') device++;
if(!(device = COMM_ParseStopBits(device, &lpdcb->StopBits)))
return FALSE;
/* The last parameter for flow control is optional. */
while(*device == ' ') device++;
if(*device == ',')
{
device++;
while(*device == ' ') device++;
if(*device) last = toupperW(*device++);
while(*device == ' ') device++;
}
/* Win NT sets the flow control members based on (or lack of) the last
parameter. Win 9x does not set these members. */
switch(last)
{
case 0:
lpdcb->fInX = FALSE;
lpdcb->fOutX = FALSE;
lpdcb->fOutxCtsFlow = FALSE;
lpdcb->fOutxDsrFlow = FALSE;
lpdcb->fDtrControl = DTR_CONTROL_ENABLE;
lpdcb->fRtsControl = RTS_CONTROL_ENABLE;
break;
case 'X':
lpdcb->fInX = TRUE;
lpdcb->fOutX = TRUE;
lpdcb->fOutxCtsFlow = FALSE;
lpdcb->fOutxDsrFlow = FALSE;
lpdcb->fDtrControl = DTR_CONTROL_ENABLE;
lpdcb->fRtsControl = RTS_CONTROL_ENABLE;
break;
case 'P':
lpdcb->fInX = FALSE;
lpdcb->fOutX = FALSE;
lpdcb->fOutxCtsFlow = TRUE;
lpdcb->fOutxDsrFlow = TRUE;
lpdcb->fDtrControl = DTR_CONTROL_HANDSHAKE;
lpdcb->fRtsControl = RTS_CONTROL_HANDSHAKE;
break;
default:
return FALSE;
}
/* This should be the end of the string. */
if(*device) return FALSE;
return TRUE;
}
/***********************************************************************
* COMM_BuildNewCommDCB (Internal)
*
* Build a DCB using the new style settings string.
* eg: "baud=9600 parity=n data=8 stop=1 xon=on to=on"
*/
static BOOL COMM_BuildNewCommDCB(LPCWSTR device, LPDCB lpdcb, LPCOMMTIMEOUTS lptimeouts)
{
DWORD temp;
BOOL baud = FALSE, stop = FALSE;
static const WCHAR baudW[] = {'b','a','u','d','=',0};
static const WCHAR parityW[] = {'p','a','r','i','t','y','=',0};
static const WCHAR dataW[] = {'d','a','t','a','=',0};
static const WCHAR stopW[] = {'s','t','o','p','=',0};
static const WCHAR toW[] = {'t','o','=',0};
static const WCHAR xonW[] = {'x','o','n','=',0};
static const WCHAR odsrW[] = {'o','d','s','r','=',0};
static const WCHAR octsW[] = {'o','c','t','s','=',0};
static const WCHAR dtrW[] = {'d','t','r','=',0};
static const WCHAR rtsW[] = {'r','t','s','=',0};
static const WCHAR idsrW[] = {'i','d','s','r','=',0};
while(*device)
{
while(*device == ' ') device++;
if(!strncmpiW(baudW, device, 5))
{
baud = TRUE;
if(!(device = COMM_ParseNumber(device + 5, &lpdcb->BaudRate)))
return FALSE;
}
else if(!strncmpiW(parityW, device, 7))
{
if(!(device = COMM_ParseParity(device + 7, &lpdcb->Parity)))
return FALSE;
}
else if(!strncmpiW(dataW, device, 5))
{
if(!(device = COMM_ParseByteSize(device + 5, &lpdcb->ByteSize)))
return FALSE;
}
else if(!strncmpiW(stopW, device, 5))
{
stop = TRUE;
if(!(device = COMM_ParseStopBits(device + 5, &lpdcb->StopBits)))
return FALSE;
}
else if(!strncmpiW(toW, device, 3))
{
if(!(device = COMM_ParseOnOff(device + 3, &temp)))
return FALSE;
lptimeouts->ReadIntervalTimeout = 0;
lptimeouts->ReadTotalTimeoutMultiplier = 0;
lptimeouts->ReadTotalTimeoutConstant = 0;
lptimeouts->WriteTotalTimeoutMultiplier = 0;
lptimeouts->WriteTotalTimeoutConstant = temp ? 60000 : 0;
}
else if(!strncmpiW(xonW, device, 4))
{
if(!(device = COMM_ParseOnOff(device + 4, &temp)))
return FALSE;
lpdcb->fOutX = temp;
lpdcb->fInX = temp;
}
else if(!strncmpiW(odsrW, device, 5))
{
if(!(device = COMM_ParseOnOff(device + 5, &temp)))
return FALSE;
lpdcb->fOutxDsrFlow = temp;
}
else if(!strncmpiW(octsW, device, 5))
{
if(!(device = COMM_ParseOnOff(device + 5, &temp)))
return FALSE;
lpdcb->fOutxCtsFlow = temp;
}
else if(!strncmpiW(dtrW, device, 4))
{
if(!(device = COMM_ParseOnOff(device + 4, &temp)))
return FALSE;
lpdcb->fDtrControl = temp;
}
else if(!strncmpiW(rtsW, device, 4))
{
if(!(device = COMM_ParseOnOff(device + 4, &temp)))
return FALSE;
lpdcb->fRtsControl = temp;
}
else if(!strncmpiW(idsrW, device, 5))
{
if(!(device = COMM_ParseOnOff(device + 5, &temp)))
return FALSE;
/* Win NT sets the fDsrSensitivity member based on the
idsr parameter. Win 9x sets fOutxDsrFlow instead. */
lpdcb->fDsrSensitivity = temp;
}
else
return FALSE;
/* After the above parsing, the next character (if not the end of
the string) should be a space */
if(*device && *device != ' ')
return FALSE;
}
/* If stop bits were not specified, a default is always supplied. */
if(!stop)
{
if(baud && lpdcb->BaudRate == 110)
lpdcb->StopBits = TWOSTOPBITS;
else
lpdcb->StopBits = ONESTOPBIT;
}
return TRUE;
}
/**************************************************************************
* BuildCommDCBA (KERNEL32.@)
*
* Updates a device control block data structure with values from an
* ascii device control string. The device control string has two forms
* normal and extended, it must be exclusively in one or the other form.
*
* RETURNS
*
* True on success, false on a malformed control string.
*/
BOOL WINAPI BuildCommDCBA(
LPCSTR device, /* [in] The ascii device control string used to update the DCB. */
LPDCB lpdcb) /* [out] The device control block to be updated. */
{
return BuildCommDCBAndTimeoutsA(device,lpdcb,NULL);
}
/**************************************************************************
* BuildCommDCBAndTimeoutsA (KERNEL32.@)
*
* Updates a device control block data structure with values from an
* ascii device control string. Taking timeout values from a timeouts
* struct if desired by the control string.
*
* RETURNS
*
* True on success, false bad handles etc.
*/
BOOL WINAPI BuildCommDCBAndTimeoutsA(
LPCSTR device, /* [in] The ascii device control string. */
LPDCB lpdcb, /* [out] The device control block to be updated. */
LPCOMMTIMEOUTS lptimeouts) /* [in] The COMMTIMEOUTS structure to be updated. */
{
BOOL ret = FALSE;
UNICODE_STRING deviceW;
TRACE("(%s,%p,%p)\n",device,lpdcb,lptimeouts);
if(device) RtlCreateUnicodeStringFromAsciiz(&deviceW,device);
else deviceW.Buffer = NULL;
if(deviceW.Buffer) ret = BuildCommDCBAndTimeoutsW(deviceW.Buffer,lpdcb,lptimeouts);
RtlFreeUnicodeString(&deviceW);
return ret;
}
/**************************************************************************
* BuildCommDCBAndTimeoutsW (KERNEL32.@)
*
* Updates a device control block data structure with values from a
* unicode device control string. Taking timeout values from a timeouts
* struct if desired by the control string.
*
* RETURNS
*
* True on success, false bad handles etc
*/
BOOL WINAPI BuildCommDCBAndTimeoutsW(
LPCWSTR devid, /* [in] The unicode device control string. */
LPDCB lpdcb, /* [out] The device control block to be updated. */
LPCOMMTIMEOUTS lptimeouts) /* [in] The COMMTIMEOUTS structure to be updated. */
{
DCB dcb;
COMMTIMEOUTS timeouts;
BOOL result;
LPCWSTR ptr = devid;
TRACE("(%s,%p,%p)\n",debugstr_w(devid),lpdcb,lptimeouts);
memset(&timeouts, 0, sizeof timeouts);
/* Set DCBlength. (Windows NT does not do this, but 9x does) */
lpdcb->DCBlength = sizeof(DCB);
/* Make a copy of the original data structures to work with since if
if there is an error in the device control string the originals
should not be modified (except possibly DCBlength) */
dcb = *lpdcb;
if(lptimeouts) timeouts = *lptimeouts;
ptr = COMM_ParseStart(ptr);
if(ptr == NULL)
result = FALSE;
else if(strchrW(ptr, ','))
result = COMM_BuildOldCommDCB(ptr, &dcb);
else
result = COMM_BuildNewCommDCB(ptr, &dcb, &timeouts);
if(result)
{
*lpdcb = dcb;
if(lptimeouts) *lptimeouts = timeouts;
return TRUE;
}
else
{
WARN("Invalid device control string: %s\n", debugstr_w(devid));
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
}
/**************************************************************************
* BuildCommDCBW (KERNEL32.@)
*
* Updates a device control block structure with values from an
* unicode device control string. The device control string has two forms
* normal and extended, it must be exclusively in one or the other form.
*
* RETURNS
*
* True on success, false on a malformed control string.
*/
BOOL WINAPI BuildCommDCBW(
LPCWSTR devid, /* [in] The unicode device control string. */
LPDCB lpdcb) /* [out] The device control block to be updated. */
{
return BuildCommDCBAndTimeoutsW(devid,lpdcb,NULL);
}
/*****************************************************************************
* SetCommBreak (KERNEL32.@)
*
* Halts the transmission of characters to a communications device.
*
* PARAMS
* handle [in] The communications device to suspend
*
* RETURNS
*
* True on success, and false if the communications device could not be found,
* the control is not supported.
*
* BUGS
*
* Only TIOCSBRK and TIOCCBRK are supported.
*/
BOOL WINAPI SetCommBreak(HANDLE handle)
{
return DeviceIoControl(handle, IOCTL_SERIAL_SET_BREAK_ON, NULL, 0, NULL, 0, NULL, NULL);
}
/*****************************************************************************
* ClearCommBreak (KERNEL32.@)
*
* Resumes character transmission from a communication device.
*
* PARAMS
*
* handle [in] The halted communication device whose character transmission is to be resumed
*
* RETURNS
*
* True on success and false if the communications device could not be found.
*
* BUGS
*
* Only TIOCSBRK and TIOCCBRK are supported.
*/
BOOL WINAPI ClearCommBreak(HANDLE handle)
{
return DeviceIoControl(handle, IOCTL_SERIAL_SET_BREAK_OFF, NULL, 0, NULL, 0, NULL, NULL);
}
/*****************************************************************************
* EscapeCommFunction (KERNEL32.@)
*
* Directs a communication device to perform an extended function.
*
* PARAMS
*
* handle [in] The communication device to perform the extended function
* nFunction [in] The extended function to be performed
*
* RETURNS
*
* True or requested data on successful completion of the command,
* false if the device is not present cannot execute the command
* or the command failed.
*/
BOOL WINAPI EscapeCommFunction(HANDLE handle, UINT func)
{
DWORD ioc;
switch (func)
{
case CLRDTR: ioc = IOCTL_SERIAL_CLR_DTR; break;
case CLRRTS: ioc = IOCTL_SERIAL_CLR_RTS; break;
case SETDTR: ioc = IOCTL_SERIAL_SET_DTR; break;
case SETRTS: ioc = IOCTL_SERIAL_SET_RTS; break;
case SETXOFF: ioc = IOCTL_SERIAL_SET_XOFF; break;
case SETXON: ioc = IOCTL_SERIAL_SET_XON; break;
case SETBREAK: ioc = IOCTL_SERIAL_SET_BREAK_ON; break;
case CLRBREAK: ioc = IOCTL_SERIAL_SET_BREAK_OFF; break;
case RESETDEV: ioc = IOCTL_SERIAL_RESET_DEVICE; break;
default:
ERR("Unknown function code (%u)\n", func);
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
return DeviceIoControl(handle, ioc, NULL, 0, NULL, 0, NULL, NULL);
}
/********************************************************************
* PurgeComm (KERNEL32.@)
*
* Terminates pending operations and/or discards buffers on a
* communication resource.
*
* PARAMS
*
* handle [in] The communication resource to be purged
* flags [in] Flags for clear pending/buffer on input/output
*
* RETURNS
*
* True on success and false if the communications handle is bad.
*/
BOOL WINAPI PurgeComm(HANDLE handle, DWORD flags)
{
return DeviceIoControl(handle, IOCTL_SERIAL_PURGE, &flags, sizeof(flags),
NULL, 0, NULL, NULL);
}
/*****************************************************************************
* ClearCommError (KERNEL32.@)
*
* Enables further I/O operations on a communications resource after
* supplying error and current status information.
*
* PARAMS
*
* handle [in] The communication resource with the error
* errors [out] Flags indicating error the resource experienced
* lpStat [out] The status of the communication resource
* RETURNS
*
* True on success, false if the communication resource handle is bad.
*/
BOOL WINAPI ClearCommError(HANDLE handle, LPDWORD errors, LPCOMSTAT lpStat)
{
SERIAL_STATUS ss;
if (!DeviceIoControl(handle, IOCTL_SERIAL_GET_COMMSTATUS, NULL, 0,
&ss, sizeof(ss), NULL, NULL))
return FALSE;
if (errors)
{
*errors = 0;
if (ss.Errors & SERIAL_ERROR_BREAK) *errors |= CE_BREAK;
if (ss.Errors & SERIAL_ERROR_FRAMING) *errors |= CE_FRAME;
if (ss.Errors & SERIAL_ERROR_OVERRUN) *errors |= CE_OVERRUN;
if (ss.Errors & SERIAL_ERROR_QUEUEOVERRUN) *errors |= CE_RXOVER;
if (ss.Errors & SERIAL_ERROR_PARITY) *errors |= CE_RXPARITY;
}
if (lpStat)
{
memset(lpStat, 0, sizeof(*lpStat));
if (ss.HoldReasons & SERIAL_TX_WAITING_FOR_CTS) lpStat->fCtsHold = TRUE;
if (ss.HoldReasons & SERIAL_TX_WAITING_FOR_DSR) lpStat->fDsrHold = TRUE;
if (ss.HoldReasons & SERIAL_TX_WAITING_FOR_DCD) lpStat->fRlsdHold = TRUE;
if (ss.HoldReasons & SERIAL_TX_WAITING_FOR_XON) lpStat->fXoffHold = TRUE;
if (ss.HoldReasons & SERIAL_TX_WAITING_XOFF_SENT) lpStat->fXoffSent = TRUE;
if (ss.EofReceived) lpStat->fEof = TRUE;
if (ss.WaitForImmediate) lpStat->fTxim = TRUE;
lpStat->cbInQue = ss.AmountInInQueue;
lpStat->cbOutQue = ss.AmountInOutQueue;
}
return TRUE;
}
/*****************************************************************************
* SetupComm (KERNEL32.@)
*
* Called after CreateFile to hint to the communication resource to use
* specified sizes for input and output buffers rather than the default values.
*
* PARAMS
* handle [in] The just created communication resource handle
* insize [in] The suggested size of the communication resources input buffer in bytes
* outsize [in] The suggested size of the communication resources output buffer in bytes
*
* RETURNS
*
* True if successful, false if the communications resource handle is bad.
*
* BUGS
*
* Stub.
*/
BOOL WINAPI SetupComm(HANDLE handle, DWORD insize, DWORD outsize)
{
SERIAL_QUEUE_SIZE sqs;
sqs.InSize = insize;
sqs.OutSize = outsize;
return DeviceIoControl(handle, IOCTL_SERIAL_SET_QUEUE_SIZE,
&sqs, sizeof(sqs), NULL, 0, NULL, NULL);
}
/*****************************************************************************
* GetCommMask (KERNEL32.@)
*
* Obtain the events associated with a communication device that will cause
* a call WaitCommEvent to return.
*
* PARAMS
*
* handle [in] The communications device
* evtmask [out] The events which cause WaitCommEvent to return
*
* RETURNS
*
* True on success, fail on bad device handle etc.
*/
BOOL WINAPI GetCommMask(HANDLE handle, LPDWORD evtmask)
{
TRACE("handle %p, mask %p\n", handle, evtmask);
return DeviceIoControl(handle, IOCTL_SERIAL_GET_WAIT_MASK,
NULL, 0, evtmask, sizeof(*evtmask), NULL, NULL);
}
/*****************************************************************************
* SetCommMask (KERNEL32.@)
*
* There be some things we need to hear about yon there communications device.
* (Set which events associated with a communication device should cause
* a call WaitCommEvent to return.)
*
* PARAMS
*
* handle [in] The communications device
* evtmask [in] The events that are to be monitored
*
* RETURNS
*
* True on success, false on bad handle etc.
*/
BOOL WINAPI SetCommMask(HANDLE handle, DWORD evtmask)
{
TRACE("handle %p, mask %x\n", handle, evtmask);
return DeviceIoControl(handle, IOCTL_SERIAL_SET_WAIT_MASK,
&evtmask, sizeof(evtmask), NULL, 0, NULL, NULL);
}
static void dump_dcb(const DCB* lpdcb)
{
TRACE("bytesize=%d baudrate=%d fParity=%d Parity=%d stopbits=%d\n",
lpdcb->ByteSize, lpdcb->BaudRate, lpdcb->fParity, lpdcb->Parity,
(lpdcb->StopBits == ONESTOPBIT) ? 1 :
(lpdcb->StopBits == TWOSTOPBITS) ? 2 : 0);
TRACE("%sIXON %sIXOFF\n", (lpdcb->fInX) ? "" : "~", (lpdcb->fOutX) ? "" : "~");
TRACE("fOutxCtsFlow=%d fRtsControl=%d\n", lpdcb->fOutxCtsFlow, lpdcb->fRtsControl);
TRACE("fOutxDsrFlow=%d fDtrControl=%d\n", lpdcb->fOutxDsrFlow, lpdcb->fDtrControl);
if (lpdcb->fOutxCtsFlow || lpdcb->fRtsControl == RTS_CONTROL_HANDSHAKE)
TRACE("CRTSCTS\n");
else
TRACE("~CRTSCTS\n");
}
/*****************************************************************************
* SetCommState (KERNEL32.@)
*
* Re-initializes all hardware and control settings of a communications device,
* with values from a device control block without effecting the input and output
* queues.
*
* PARAMS
*
* handle [in] The communications device
* lpdcb [out] The device control block
*
* RETURNS
*
* True on success, false on failure eg if the XonChar is equal to the XoffChar.
*/
BOOL WINAPI SetCommState( HANDLE handle, LPDCB lpdcb)
{
SERIAL_BAUD_RATE sbr;
SERIAL_LINE_CONTROL slc;
SERIAL_HANDFLOW shf;
SERIAL_CHARS sc;
if (lpdcb == NULL)
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
dump_dcb(lpdcb);
sbr.BaudRate = lpdcb->BaudRate;
slc.StopBits = lpdcb->StopBits;
slc.Parity = lpdcb->Parity;
slc.WordLength = lpdcb->ByteSize;
shf.ControlHandShake = 0;
shf.FlowReplace = 0;
if (lpdcb->fOutxCtsFlow) shf.ControlHandShake |= SERIAL_CTS_HANDSHAKE;
if (lpdcb->fOutxDsrFlow) shf.ControlHandShake |= SERIAL_DSR_HANDSHAKE;
switch (lpdcb->fDtrControl)
{
case DTR_CONTROL_DISABLE: break;
case DTR_CONTROL_ENABLE: shf.ControlHandShake |= SERIAL_DTR_CONTROL; break;
case DTR_CONTROL_HANDSHAKE: shf.ControlHandShake |= SERIAL_DTR_HANDSHAKE;break;
default:
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
switch (lpdcb->fDtrControl)
{
case RTS_CONTROL_DISABLE: break;
case RTS_CONTROL_ENABLE: shf.FlowReplace |= SERIAL_RTS_CONTROL; break;
case RTS_CONTROL_HANDSHAKE: shf.FlowReplace |= SERIAL_RTS_HANDSHAKE; break;
case RTS_CONTROL_TOGGLE: shf.FlowReplace |= SERIAL_RTS_CONTROL |
SERIAL_RTS_HANDSHAKE; break;
default:
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
if (lpdcb->fDsrSensitivity) shf.ControlHandShake |= SERIAL_DSR_SENSITIVITY;
if (lpdcb->fAbortOnError) shf.ControlHandShake |= SERIAL_ERROR_ABORT;
if (lpdcb->fErrorChar) shf.FlowReplace |= SERIAL_ERROR_CHAR;
if (lpdcb->fNull) shf.FlowReplace |= SERIAL_NULL_STRIPPING;
if (lpdcb->fTXContinueOnXoff) shf.FlowReplace |= SERIAL_XOFF_CONTINUE;
if (lpdcb->fOutX) shf.FlowReplace |= SERIAL_AUTO_TRANSMIT;
if (lpdcb->fInX) shf.FlowReplace |= SERIAL_AUTO_RECEIVE;
shf.XonLimit = lpdcb->XonLim;
shf.XoffLimit = lpdcb->XoffLim;
sc.EofChar = lpdcb->EofChar;
sc.ErrorChar = lpdcb->ErrorChar;
sc.BreakChar = 0;
sc.EventChar = lpdcb->EvtChar;
sc.XonChar = lpdcb->XonChar;
sc.XoffChar = lpdcb->XoffChar;
/* note: change DTR/RTS lines after setting the comm attributes,
* so flow control does not interfere.
*/
return (DeviceIoControl(handle, IOCTL_SERIAL_SET_BAUD_RATE,
&sbr, sizeof(sbr), NULL, 0, NULL, NULL) &&
DeviceIoControl(handle, IOCTL_SERIAL_SET_LINE_CONTROL,
&slc, sizeof(slc), NULL, 0, NULL, NULL) &&
DeviceIoControl(handle, IOCTL_SERIAL_SET_HANDFLOW,
&shf, sizeof(shf), NULL, 0, NULL, NULL) &&
DeviceIoControl(handle, IOCTL_SERIAL_SET_CHARS,
&sc, sizeof(sc), NULL, 0, NULL, NULL));
}
/*****************************************************************************
* GetCommState (KERNEL32.@)
*
* Fills in a device control block with information from a communications device.
*
* PARAMS
* handle [in] The communications device
* lpdcb [out] The device control block
*
* RETURNS
*
* True on success, false if the communication device handle is bad etc
*
* BUGS
*
* XonChar and XoffChar are not set.
*/
BOOL WINAPI GetCommState(HANDLE handle, LPDCB lpdcb)
{
SERIAL_BAUD_RATE sbr;
SERIAL_LINE_CONTROL slc;
SERIAL_HANDFLOW shf;
SERIAL_CHARS sc;
TRACE("handle %p, ptr %p\n", handle, lpdcb);
if (!lpdcb)
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
if (!DeviceIoControl(handle, IOCTL_SERIAL_GET_BAUD_RATE,
NULL, 0, &sbr, sizeof(sbr), NULL, NULL) ||
!DeviceIoControl(handle, IOCTL_SERIAL_GET_LINE_CONTROL,
NULL, 0, &slc, sizeof(slc), NULL, NULL) ||
!DeviceIoControl(handle, IOCTL_SERIAL_GET_HANDFLOW,
NULL, 0, &shf, sizeof(shf), NULL, NULL) ||
!DeviceIoControl(handle, IOCTL_SERIAL_GET_CHARS,
NULL, 0, &sc, sizeof(sc), NULL, NULL))
return FALSE;
memset(lpdcb, 0, sizeof(*lpdcb));
lpdcb->DCBlength = sizeof(*lpdcb);
/* yes, they seem no never be (re)set on NT */
lpdcb->fBinary = 1;
lpdcb->fParity = 0;
lpdcb->BaudRate = sbr.BaudRate;
lpdcb->StopBits = slc.StopBits;
lpdcb->Parity = slc.Parity;
lpdcb->ByteSize = slc.WordLength;
if (shf.ControlHandShake & SERIAL_CTS_HANDSHAKE) lpdcb->fOutxCtsFlow = 1;
if (shf.ControlHandShake & SERIAL_DSR_HANDSHAKE) lpdcb->fOutxDsrFlow = 1;
switch (shf.ControlHandShake & (SERIAL_DTR_CONTROL | SERIAL_DTR_HANDSHAKE))
{
case 0: lpdcb->fDtrControl = DTR_CONTROL_DISABLE; break;
case SERIAL_DTR_CONTROL: lpdcb->fDtrControl = DTR_CONTROL_ENABLE; break;
case SERIAL_DTR_HANDSHAKE: lpdcb->fDtrControl = DTR_CONTROL_HANDSHAKE; break;
}
switch (shf.FlowReplace & (SERIAL_RTS_CONTROL | SERIAL_RTS_HANDSHAKE))
{
case 0: lpdcb->fRtsControl = RTS_CONTROL_DISABLE; break;
case SERIAL_RTS_CONTROL: lpdcb->fRtsControl = RTS_CONTROL_ENABLE; break;
case SERIAL_RTS_HANDSHAKE: lpdcb->fRtsControl = RTS_CONTROL_HANDSHAKE; break;
case SERIAL_RTS_CONTROL | SERIAL_RTS_HANDSHAKE:
lpdcb->fRtsControl = RTS_CONTROL_TOGGLE; break;
}
if (shf.ControlHandShake & SERIAL_DSR_SENSITIVITY) lpdcb->fDsrSensitivity = 1;
if (shf.ControlHandShake & SERIAL_ERROR_ABORT) lpdcb->fAbortOnError = 1;
if (shf.FlowReplace & SERIAL_ERROR_CHAR) lpdcb->fErrorChar = 1;
if (shf.FlowReplace & SERIAL_NULL_STRIPPING) lpdcb->fNull = 1;
if (shf.FlowReplace & SERIAL_XOFF_CONTINUE) lpdcb->fTXContinueOnXoff = 1;
lpdcb->XonLim = shf.XonLimit;
lpdcb->XoffLim = shf.XoffLimit;
if (shf.FlowReplace & SERIAL_AUTO_TRANSMIT) lpdcb->fOutX = 1;
if (shf.FlowReplace & SERIAL_AUTO_RECEIVE) lpdcb->fInX = 1;
lpdcb->EofChar = sc.EofChar;
lpdcb->ErrorChar = sc.ErrorChar;
lpdcb->EvtChar = sc.EventChar;
lpdcb->XonChar = sc.XonChar;
lpdcb->XoffChar = sc.XoffChar;
TRACE("OK\n");
dump_dcb(lpdcb);
return TRUE;
}
/*****************************************************************************
* TransmitCommChar (KERNEL32.@)
*
* Transmits a single character in front of any pending characters in the
* output buffer. Usually used to send an interrupt character to a host.
*
* PARAMS
* hComm [in] The communication device in need of a command character
* chTransmit [in] The character to transmit
*
* RETURNS
*
* True if the call succeeded, false if the previous command character to the
* same device has not been sent yet the handle is bad etc.
*
*/
BOOL WINAPI TransmitCommChar(HANDLE hComm, CHAR chTransmit)
{
return DeviceIoControl(hComm, IOCTL_SERIAL_IMMEDIATE_CHAR,
&chTransmit, sizeof(chTransmit), NULL, 0, NULL, NULL);
}
/*****************************************************************************
* GetCommTimeouts (KERNEL32.@)
*
* Obtains the request timeout values for the communications device.
*
* PARAMS
* hComm [in] The communications device
* lptimeouts [out] The struct of request timeouts
*
* RETURNS
*
* True on success, false if communications device handle is bad
* or the target structure is null.
*/
BOOL WINAPI GetCommTimeouts(HANDLE hComm, LPCOMMTIMEOUTS lptimeouts)
{
SERIAL_TIMEOUTS st;
TRACE("(%p, %p)\n", hComm, lptimeouts);
if (!lptimeouts)
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
if (!DeviceIoControl(hComm, IOCTL_SERIAL_GET_TIMEOUTS,
NULL, 0, &st, sizeof(st), NULL, NULL))
return FALSE;
lptimeouts->ReadIntervalTimeout = st.ReadIntervalTimeout;
lptimeouts->ReadTotalTimeoutMultiplier = st.ReadTotalTimeoutMultiplier;
lptimeouts->ReadTotalTimeoutConstant = st.ReadTotalTimeoutConstant;
lptimeouts->WriteTotalTimeoutMultiplier = st.WriteTotalTimeoutMultiplier;
lptimeouts->WriteTotalTimeoutConstant = st.WriteTotalTimeoutConstant;
return TRUE;
}
/*****************************************************************************
* SetCommTimeouts (KERNEL32.@)
*
* Sets the timeouts used when reading and writing data to/from COMM ports.
*
* PARAMS
* hComm [in] handle of COMM device
* lptimeouts [in] pointer to COMMTIMEOUTS structure
*
* ReadIntervalTimeout
* - converted and passes to linux kernel as c_cc[VTIME]
* ReadTotalTimeoutMultiplier, ReadTotalTimeoutConstant
* - used in ReadFile to calculate GetOverlappedResult's timeout
* WriteTotalTimeoutMultiplier, WriteTotalTimeoutConstant
* - used in WriteFile to calculate GetOverlappedResult's timeout
*
* RETURNS
*
* True if the timeouts were set, false otherwise.
*/
BOOL WINAPI SetCommTimeouts(HANDLE hComm, LPCOMMTIMEOUTS lptimeouts)
{
SERIAL_TIMEOUTS st;
TRACE("(%p, %p)\n", hComm, lptimeouts);
if (lptimeouts == NULL)
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
st.ReadIntervalTimeout = lptimeouts->ReadIntervalTimeout;
st.ReadTotalTimeoutMultiplier = lptimeouts->ReadTotalTimeoutMultiplier;
st.ReadTotalTimeoutConstant = lptimeouts->ReadTotalTimeoutConstant;
st.WriteTotalTimeoutMultiplier = lptimeouts->WriteTotalTimeoutMultiplier;
st.WriteTotalTimeoutConstant = lptimeouts->WriteTotalTimeoutConstant;
return DeviceIoControl(hComm, IOCTL_SERIAL_SET_TIMEOUTS,
&st, sizeof(st), NULL, 0, NULL, NULL);
}
/***********************************************************************
* GetCommModemStatus (KERNEL32.@)
*
* Obtains the four control register bits if supported by the hardware.
*
* PARAMS
*
* hFile [in] The communications device
* lpModemStat [out] The control register bits
*
* RETURNS
*
* True if the communications handle was good and for hardware that
* control register access, false otherwise.
*/
BOOL WINAPI GetCommModemStatus(HANDLE hFile, LPDWORD lpModemStat)
{
return DeviceIoControl(hFile, IOCTL_SERIAL_GET_MODEMSTATUS,
NULL, 0, lpModemStat, sizeof(DWORD), NULL, NULL);
}
/***********************************************************************
* WaitCommEvent (KERNEL32.@)
*
* Wait until something interesting happens on a COMM port.
* Interesting things (events) are set by calling SetCommMask before
* this function is called.
*
* RETURNS
* TRUE if successful
* FALSE if failure
*
* The set of detected events will be written to *lpdwEventMask
* ERROR_IO_PENDING will be returned the overlapped structure was passed
*
* BUGS:
* Only supports EV_RXCHAR and EV_TXEMPTY
*/
BOOL WINAPI WaitCommEvent(
HANDLE hFile, /* [in] handle of comm port to wait for */
LPDWORD lpdwEvents, /* [out] event(s) that were detected */
LPOVERLAPPED lpOverlapped) /* [in/out] for Asynchronous waiting */
{
return DeviceIoControl(hFile, IOCTL_SERIAL_WAIT_ON_MASK, NULL, 0,
lpdwEvents, sizeof(DWORD), NULL, lpOverlapped);
}
/***********************************************************************
* GetCommProperties (KERNEL32.@)
*
* This function fills in a structure with the capabilities of the
* communications port driver.
*
* RETURNS
*
* TRUE on success, FALSE on failure
* If successful, the lpCommProp structure be filled in with
* properties of the comm port.
*/
BOOL WINAPI GetCommProperties(
HANDLE hFile, /* [in] handle of the comm port */
LPCOMMPROP lpCommProp) /* [out] pointer to struct to be filled */
{
FIXME("(%p %p )\n",hFile,lpCommProp);
if(!lpCommProp)
return FALSE;
/*
* These values should be valid for LINUX's serial driver
* FIXME: Perhaps they deserve an #ifdef LINUX
*/
memset(lpCommProp,0,sizeof(COMMPROP));
lpCommProp->wPacketLength = 1;
lpCommProp->wPacketVersion = 1;
lpCommProp->dwServiceMask = SP_SERIALCOMM;
lpCommProp->dwReserved1 = 0;
lpCommProp->dwMaxTxQueue = 4096;
lpCommProp->dwMaxRxQueue = 4096;
lpCommProp->dwMaxBaud = BAUD_115200;
lpCommProp->dwProvSubType = PST_RS232;
lpCommProp->dwProvCapabilities = PCF_DTRDSR | PCF_PARITY_CHECK | PCF_RTSCTS | PCF_TOTALTIMEOUTS;
lpCommProp->dwSettableParams = SP_BAUD | SP_DATABITS | SP_HANDSHAKING |
SP_PARITY | SP_PARITY_CHECK | SP_STOPBITS ;
lpCommProp->dwSettableBaud = BAUD_075 | BAUD_110 | BAUD_134_5 | BAUD_150 |
BAUD_300 | BAUD_600 | BAUD_1200 | BAUD_1800 | BAUD_2400 | BAUD_4800 |
BAUD_9600 | BAUD_19200 | BAUD_38400 | BAUD_57600 | BAUD_115200 ;
lpCommProp->wSettableData = DATABITS_5 | DATABITS_6 | DATABITS_7 | DATABITS_8 ;
lpCommProp->wSettableStopParity = STOPBITS_10 | STOPBITS_15 | STOPBITS_20 |
PARITY_NONE | PARITY_ODD |PARITY_EVEN | PARITY_MARK | PARITY_SPACE;
lpCommProp->dwCurrentTxQueue = lpCommProp->dwMaxTxQueue;
lpCommProp->dwCurrentRxQueue = lpCommProp->dwMaxRxQueue;
return TRUE;
}
/***********************************************************************
* FIXME:
* The functionality of CommConfigDialogA, GetDefaultCommConfig and
* SetDefaultCommConfig is implemented in a DLL (usually SERIALUI.DLL).
* This is dependent on the type of COMM port, but since it is doubtful
* anybody will get around to implementing support for fancy serial
* ports in WINE, this is hardcoded for the time being. The name of
* this DLL should be stored in and read from the system registry in
* the hive HKEY_LOCAL_MACHINE, key
* System\\CurrentControlSet\\Services\\Class\\Ports\\????
* where ???? is the port number... that is determined by PNP
* The DLL should be loaded when the COMM port is opened, and closed
* when the COMM port is closed. - MJM 20 June 2000
***********************************************************************/
static const WCHAR lpszSerialUI[] = {
's','e','r','i','a','l','u','i','.','d','l','l',0 };
/***********************************************************************
* CommConfigDialogA (KERNEL32.@)
*
* Raises a dialog that allows the user to configure a comm port.
* Fills the COMMCONFIG struct with information specified by the user.
* This function should call a similar routine in the COMM driver...
*
* RETURNS
*
* TRUE on success, FALSE on failure
* If successful, the lpCommConfig structure will contain a new
* configuration for the comm port, as specified by the user.
*
* BUGS
* The library with the CommConfigDialog code is never unloaded.
* Perhaps this should be done when the comm port is closed?
*/
BOOL WINAPI CommConfigDialogA(
LPCSTR lpszDevice, /* [in] name of communications device */
HWND hWnd, /* [in] parent window for the dialog */
LPCOMMCONFIG lpCommConfig) /* [out] pointer to struct to fill */
{
LPWSTR lpDeviceW = NULL;
DWORD len;
BOOL r;
TRACE("(%s, %p, %p)\n", debugstr_a(lpszDevice), hWnd, lpCommConfig);
if (lpszDevice)
{
len = MultiByteToWideChar( CP_ACP, 0, lpszDevice, -1, NULL, 0 );
lpDeviceW = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
MultiByteToWideChar( CP_ACP, 0, lpszDevice, -1, lpDeviceW, len );
}
r = CommConfigDialogW(lpDeviceW, hWnd, lpCommConfig);
HeapFree( GetProcessHeap(), 0, lpDeviceW );
return r;
}
/***********************************************************************
* CommConfigDialogW (KERNEL32.@)
*
* See CommConfigDialogA.
*/
BOOL WINAPI CommConfigDialogW(
LPCWSTR lpszDevice, /* [in] name of communications device */
HWND hWnd, /* [in] parent window for the dialog */
LPCOMMCONFIG lpCommConfig) /* [out] pointer to struct to fill */
{
FARPROC pCommConfigDialog;
HMODULE hConfigModule;
DWORD res = ERROR_INVALID_PARAMETER;
TRACE("(%s, %p, %p)\n", debugstr_w(lpszDevice), hWnd, lpCommConfig);
hConfigModule = LoadLibraryW(lpszSerialUI);
if (hConfigModule) {
pCommConfigDialog = GetProcAddress(hConfigModule, "drvCommConfigDialogW");
if (pCommConfigDialog) {
res = pCommConfigDialog(lpszDevice, hWnd, lpCommConfig);
}
FreeLibrary(hConfigModule);
}
if (res) SetLastError(res);
return (res == ERROR_SUCCESS);
}
/***********************************************************************
* GetCommConfig (KERNEL32.@)
*
* Fill in the COMMCONFIG structure for the comm port hFile
*
* RETURNS
*
* TRUE on success, FALSE on failure
* If successful, lpCommConfig contains the comm port configuration.
*
* BUGS
*
*/
BOOL WINAPI GetCommConfig(
HANDLE hFile, /* [in] The communications device. */
LPCOMMCONFIG lpCommConfig, /* [out] The communications configuration of the device (if it fits). */
LPDWORD lpdwSize) /* [in/out] Initially the size of the configuration buffer/structure,
afterwards the number of bytes copied to the buffer or
the needed size of the buffer. */
{
BOOL r;
TRACE("(%p, %p, %p) *lpdwSize: %u\n", hFile, lpCommConfig, lpdwSize, lpdwSize ? *lpdwSize : 0 );
if(lpCommConfig == NULL)
return FALSE;
r = *lpdwSize < sizeof(COMMCONFIG); /* TRUE if not enough space */
*lpdwSize = sizeof(COMMCONFIG);
if(r)
return FALSE;
lpCommConfig->dwSize = sizeof(COMMCONFIG);
lpCommConfig->wVersion = 1;
lpCommConfig->wReserved = 0;
r = GetCommState(hFile,&lpCommConfig->dcb);
lpCommConfig->dwProviderSubType = PST_RS232;
lpCommConfig->dwProviderOffset = 0;
lpCommConfig->dwProviderSize = 0;
return r;
}
/***********************************************************************
* SetCommConfig (KERNEL32.@)
*
* Sets the configuration of the communications device.
*
* RETURNS
*
* True on success, false if the handle was bad is not a communications device.
*/
BOOL WINAPI SetCommConfig(
HANDLE hFile, /* [in] The communications device. */
LPCOMMCONFIG lpCommConfig, /* [in] The desired configuration. */
DWORD dwSize) /* [in] size of the lpCommConfig struct */
{
TRACE("(%p, %p, %u)\n", hFile, lpCommConfig, dwSize);
return SetCommState(hFile,&lpCommConfig->dcb);
}
/***********************************************************************
* SetDefaultCommConfigW (KERNEL32.@)
*
* Initializes the default configuration for a communication device.
*
* PARAMS
* lpszDevice [I] Name of the device targeted for configuration
* lpCommConfig [I] PTR to a buffer with the configuration for the device
* dwSize [I] Number of bytes in the buffer
*
* RETURNS
* Failure: FALSE
* Success: TRUE, and default configuration saved
*
*/
BOOL WINAPI SetDefaultCommConfigW(LPCWSTR lpszDevice, LPCOMMCONFIG lpCommConfig, DWORD dwSize)
{
FARPROC lpfnSetDefaultCommConfig;
HMODULE hConfigModule;
BOOL r = FALSE;
TRACE("(%s, %p, %u)\n", debugstr_w(lpszDevice), lpCommConfig, dwSize);
hConfigModule = LoadLibraryW(lpszSerialUI);
if(!hConfigModule)
return r;
lpfnSetDefaultCommConfig = GetProcAddress(hConfigModule, "drvSetDefaultCommConfigW");
if (lpfnSetDefaultCommConfig)
r = lpfnSetDefaultCommConfig(lpszDevice, lpCommConfig, dwSize);
FreeLibrary(hConfigModule);
return r;
}
/***********************************************************************
* SetDefaultCommConfigA (KERNEL32.@)
*
* Initializes the default configuration for a communication device.
*
* See SetDefaultCommConfigW.
*
*/
BOOL WINAPI SetDefaultCommConfigA(LPCSTR lpszDevice, LPCOMMCONFIG lpCommConfig, DWORD dwSize)
{
BOOL r;
LPWSTR lpDeviceW = NULL;
DWORD len;
TRACE("(%s, %p, %u)\n", debugstr_a(lpszDevice), lpCommConfig, dwSize);
if (lpszDevice)
{
len = MultiByteToWideChar( CP_ACP, 0, lpszDevice, -1, NULL, 0 );
lpDeviceW = HeapAlloc( GetProcessHeap(), 0, len*sizeof(WCHAR) );
MultiByteToWideChar( CP_ACP, 0, lpszDevice, -1, lpDeviceW, len );
}
r = SetDefaultCommConfigW(lpDeviceW,lpCommConfig,dwSize);
HeapFree( GetProcessHeap(), 0, lpDeviceW );
return r;
}
/***********************************************************************
* GetDefaultCommConfigW (KERNEL32.@)
*
* Acquires the default configuration of the specified communication device. (unicode)
*
* RETURNS
*
* True on successful reading of the default configuration,
* if the device is not found or the buffer is too small.
*/
BOOL WINAPI GetDefaultCommConfigW(
LPCWSTR lpszName, /* [in] The unicode name of the device targeted for configuration. */
LPCOMMCONFIG lpCC, /* [out] The default configuration for the device. */
LPDWORD lpdwSize) /* [in/out] Initially the size of the default configuration buffer,
afterwards the number of bytes copied to the buffer or
the needed size of the buffer. */
{
FARPROC pGetDefaultCommConfig;
HMODULE hConfigModule;
DWORD res = ERROR_INVALID_PARAMETER;
TRACE("(%s, %p, %p) *lpdwSize: %u\n", debugstr_w(lpszName), lpCC, lpdwSize, lpdwSize ? *lpdwSize : 0 );
hConfigModule = LoadLibraryW(lpszSerialUI);
if (hConfigModule) {
pGetDefaultCommConfig = GetProcAddress(hConfigModule, "drvGetDefaultCommConfigW");
if (pGetDefaultCommConfig) {
res = pGetDefaultCommConfig(lpszName, lpCC, lpdwSize);
}
FreeLibrary(hConfigModule);
}
if (res) SetLastError(res);
return (res == ERROR_SUCCESS);
}
/**************************************************************************
* GetDefaultCommConfigA (KERNEL32.@)
*
* Acquires the default configuration of the specified communication device. (ascii)
*
* RETURNS
*
* True on successful reading of the default configuration,
* if the device is not found or the buffer is too small.
*/
BOOL WINAPI GetDefaultCommConfigA(
LPCSTR lpszName, /* [in] The ascii name of the device targeted for configuration. */
LPCOMMCONFIG lpCC, /* [out] The default configuration for the device. */
LPDWORD lpdwSize) /* [in/out] Initially the size of the default configuration buffer,
afterwards the number of bytes copied to the buffer or
the needed size of the buffer. */
{
BOOL ret = FALSE;
UNICODE_STRING lpszNameW;
TRACE("(%s, %p, %p) *lpdwSize: %u\n", debugstr_a(lpszName), lpCC, lpdwSize, lpdwSize ? *lpdwSize : 0 );
if(lpszName) RtlCreateUnicodeStringFromAsciiz(&lpszNameW,lpszName);
else lpszNameW.Buffer = NULL;
ret = GetDefaultCommConfigW(lpszNameW.Buffer,lpCC,lpdwSize);
RtlFreeUnicodeString(&lpszNameW);
return ret;
}
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