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- /*--------------------------------------------------------------------*/
- /* u l i b n t . c */
- /* */
- /* Windows NT serial port support for UUCICO */
- /*--------------------------------------------------------------------*/
-
- /*--------------------------------------------------------------------*/
- /* Changes Copyright (c) David M. Watt 1993, All Rights Reserved */
- /*--------------------------------------------------------------------*/
-
- /*--------------------------------------------------------------------*/
- /* Changes Copyright (c) 1989-1993 by Kendra Electronic */
- /* Wonderworks. */
- /* */
- /* All rights reserved except those explicitly granted by the */
- /* UUPC/extended license agreement. */
- /*--------------------------------------------------------------------*/
-
- /*--------------------------------------------------------------------*/
- /* RCS Information */
- /*--------------------------------------------------------------------*/
-
- /*
- * $Id: ulibnt.c 1.6 1993/10/03 22:09:09 ahd Exp $
- * $Log: ulibnt.c $
- * Revision 1.6 1993/10/03 22:09:09 ahd
- * Use unsigned long to display speed
- *
- * Revision 1.5 1993/09/26 03:32:27 dmwatt
- * Use Standard Windows NT error message module
- *
- * Revision 1.4 1993/09/25 03:07:56 ahd
- * Add standard Windows NT error message calls
- *
- * Revision 1.3 1993/09/21 01:42:13 ahd
- * Use standard MAXPACK limit for save buffer size
- *
- * Revision 1.2 1993/09/20 04:50:57 ahd
- * Break out of ULIBOS2.C
- *
- * Revision 1.14 1993/05/30 15:25:50 ahd
- * Multiple driver support
- *
- * Revision 1.13 1993/05/30 00:08:03 ahd
- * Multiple communications driver support
- * Delete trace functions
- *
- * Revision 1.12 1993/05/09 03:41:47 ahd
- * Make swrite accept constant input strings
- *
- * Revision 1.11 1993/04/11 00:34:11 ahd
- * Global edits for year, TEXT, etc.
- *
- * Revision 1.10 1993/04/10 21:25:16 dmwatt
- * Add Windows NT support
- *
- * Revision 1.9 1993/04/05 04:32:19 ahd
- * Additional traps for modem dropping out
- *
- * Revision 1.8 1993/04/04 04:57:01 ahd
- * Add configurable OS/2 priority values
- *
- * Revision 1.7 1992/12/30 13:02:55 dmwatt
- * Dual path for Windows NT and OS/2
- *
- * Revision 1.6 1992/12/11 12:45:11 ahd
- * Correct RTS handshake
- *
- * Revision 1.5 1992/12/04 01:00:27 ahd
- * Add copyright message, reblock other comments
- *
- * Revision 1.4 1992/11/29 22:09:10 ahd
- * Add new define for BC++ OS/2 build
- *
- * Revision 1.3 1992/11/19 03:00:39 ahd
- * drop rcsid
- *
- * Revision 1.2 1992/11/15 20:11:48 ahd
- * Add English display of modem status and error bits
- *
- */
-
- /*--------------------------------------------------------------------*/
- /* System include files */
- /*--------------------------------------------------------------------*/
-
- #include <stdlib.h>
- #include <stdio.h>
- #include <string.h>
- #include <fcntl.h>
- #include <io.h>
- #include <time.h>
-
- /*--------------------------------------------------------------------*/
- /* Windows NT include files */
- /*--------------------------------------------------------------------*/
-
- #include <windows.h>
- #include <limits.h>
-
- /*--------------------------------------------------------------------*/
- /* UUPC/extended include files */
- /*--------------------------------------------------------------------*/
-
- #include "lib.h"
- #include "ulib.h"
- #include "ssleep.h"
- #include "catcher.h"
-
- #include "commlib.h"
- #include "pnterr.h"
-
- /*--------------------------------------------------------------------*/
- /* Global variables */
- /*--------------------------------------------------------------------*/
-
- currentfile();
-
- static boolean carrierdetect = FALSE; /* Modem is not connected */
-
- static boolean hangupNeeded = FALSE;
- static boolean console = FALSE;
-
- static currentSpeed = 0;
-
- #define FAR_NULL ((PVOID) 0L)
-
- /*--------------------------------------------------------------------*/
- /* Definitions of control structures for DOS API */
- /*--------------------------------------------------------------------*/
-
- static HANDLE hCom;
- static COMMTIMEOUTS CommTimeout;
- static DCB dcb;
-
- static BYTE com_status;
- static USHORT com_error;
-
- static USHORT usPrevPriority;
-
- static void ShowError( const USHORT status );
-
- static void ShowModem( const DWORD status );
-
- /*--------------------------------------------------------------------*/
- /* n o p e n l i n e */
- /* */
- /* Open the serial port for I/O */
- /*--------------------------------------------------------------------*/
-
- int nopenline(char *name, BPS baud, const boolean direct )
- {
- DWORD dwError;
- BOOL rc;
-
- if (portActive) /* Was the port already active? ahd */
- closeline(); /* Yes --> Shutdown it before open ahd */
-
- #ifdef UDEBUG
- printmsg(15, "nopenline: %s, %lu",
- name,
- (unsigned long) baud);
- #endif
-
- /*--------------------------------------------------------------------*/
- /* Validate the port format */
- /*--------------------------------------------------------------------*/
-
- if (!equal(name,"CON") && !equaln(name, "COM", 3 ))
- {
- printmsg(0,"nopenline: Communications port begin with COM, was %s",
- name);
- panic();
- }
-
- /*--------------------------------------------------------------------*/
- /* Perform the open */
- /*--------------------------------------------------------------------*/
-
- hCom = CreateFile( name,
- GENERIC_READ | GENERIC_WRITE,
- 0,
- NULL,
- OPEN_EXISTING,
- 0,
- NULL);
-
- /*--------------------------------------------------------------------*/
- /* Check the open worked. We translation the common obvious */
- /* error of file in use to english, for all other errors are we */
- /* report the raw error code. */
- /*--------------------------------------------------------------------*/
-
- if (hCom == INVALID_HANDLE_VALUE) {
- dwError = GetLastError();
- printmsg(0, "nopenline: OpenFile error on port %s", name);
- printNTerror("nopenline", dwError);
- return TRUE;
- }
-
- /*--------------------------------------------------------------------*/
- /* Check for special test mode */
- /*--------------------------------------------------------------------*/
-
- if ( equal(name,"CON"))
- {
- portActive = TRUE; /* record status for error handler */
- carrierdetect = FALSE; /* Modem is not connected */
- console = TRUE;
- return 0;
- }
-
- console = FALSE;
-
- /*--------------------------------------------------------------------*/
- /* Reset any errors on the communications port */
- /*--------------------------------------------------------------------*/
-
- rc = ClearCommError (hCom,
- &dwError,
- NULL);
-
- if (!rc) {
- printmsg(0, "nopenline: Error in ClearCommError() call\n");
- printNTerror("nopenline", dwError);
- }
-
- /*--------------------------------------------------------------------*/
- /* Set baud rate */
- /*--------------------------------------------------------------------*/
-
- SIOSpeed(baud);
-
- /*--------------------------------------------------------------------*/
- /* Set line attributes */
- /*--------------------------------------------------------------------*/
-
- #ifdef UDEBUG
- printmsg(15,"nopenline: Getting attributes");
- #endif
-
- rc = GetCommState(hCom, &dcb);
- if (!rc) {
- dwError = GetLastError();
-
- printmsg(0,"nopenline: Unable to get line attributes for %s",name);
- printNTerror("nopenline", dwError);
- panic();
- }
-
- dcb.StopBits = ONESTOPBIT;
- dcb.Parity = NOPARITY;
- dcb.ByteSize = 8;
-
- #ifdef UDEBUG
- printmsg(15,"nopenline: Setting attributes");
- #endif
-
- rc = SetCommState(hCom, &dcb);
- if (!rc)
- {
- dwError = GetLastError();
-
- printmsg(0,"nopenline: Unable to set line attributes for %s",name);
- printNTerror("nopenline", dwError);
-
- panic();
-
- }
-
- /*--------------------------------------------------------------------*/
- /* Disable XON/XOFF flow control */
- /* Enable CTS handling for flow control */
- /*--------------------------------------------------------------------*/
-
- #ifdef UDEBUG
- printmsg(15,"nopenline: Getting flow control information");
- #endif
-
- GetCommState(hCom, &dcb);
- dcb.fOutX = 0;
- dcb.fInX = 0;
- dcb.fOutxCtsFlow = 1;
- rc = SetCommState(hCom, &dcb);
- if (!rc) {
- dwError = GetLastError();
- printmsg(0,"nopenline: Unable to set comm attributes for %s",name);
- printNTerror("nopenline", dwError);
-
- panic();
- }
-
- /* Get communications timeout information */
-
- rc = GetCommTimeouts(hCom, &CommTimeout);
- if (!rc) {
- dwError = GetLastError();
- printmsg(0, "nopenline: error on GetCommTimeouts() on %s", name);
- printNTerror("nopenline", dwError);
- panic();
- }
-
- /*--------------------------------------------------------------------*/
- /* Raise Data Terminal Ready */
- /*--------------------------------------------------------------------*/
-
- GetCommState(hCom, &dcb);
- dcb.fDtrControl = DTR_CONTROL_ENABLE;
- dcb.fRtsControl = RTS_CONTROL_ENABLE;
-
- rc = SetCommState(hCom, &dcb);
- if (!rc) {
- printmsg(0,
-
- "nopenline: Unable to raise DTR/RTS for %s",
- name);
-
- panic();
- }
-
- traceStart( name ); // Enable logging
-
- portActive = TRUE; /* record status for error handler */
- carrierdetect = FALSE; /* Modem is not connected */
-
- /*--------------------------------------------------------------------*/
- /* Wait for port to stablize */
- /*--------------------------------------------------------------------*/
-
- ddelay(500); /* Allow port to stablize */
- return 0;
-
- } /*openline*/
-
- /*--------------------------------------------------------------------*/
- /* n s r e a d */
- /* */
- /* Read from the serial port */
- /* */
- /* Non-blocking read essential to "g" protocol. See "dcpgpkt.c" */
- /* for description. */
- /* */
- /* This all changes in a multi-tasking system. Requests for I/O */
- /* should get queued and an event flag given. Then the */
- /* requesting process (e.g. gmachine()) waits for the event flag */
- /* to fire processing either a read or a write. Could be */
- /* implemented on VAX/VMS or DG but not MS-DOS. */
- /* */
- /* OS/2 we could multitask, but we just let the system provide */
- /* a timeout for us with very little CPU usage. */
- /*--------------------------------------------------------------------*/
-
- unsigned int nsread(char *output, unsigned int wanted, unsigned int timeout)
- {
- static LPVOID psave;
- DWORD dwError;
- BOOL rc;
- static char save[MAXPACK];
- static USHORT bufsize = 0;
- time_t stop_time ;
- time_t now ;
-
- /*--------------------------------------------------------------------*/
- /* Determine if our internal buffer has the data */
- /*--------------------------------------------------------------------*/
-
- if (bufsize >= wanted)
- {
- memmove( output, save, wanted );
- bufsize -= wanted;
- if ( bufsize ) /* Any data left over? */
- memmove( save, &save[wanted], bufsize ); /* Yes --> Save it*/
- return wanted + bufsize;
- } /* if */
-
- /*--------------------------------------------------------------------*/
- /* Reset any errors on the communications port */
- /*--------------------------------------------------------------------*/
-
- rc = ClearCommError (hCom,
- &dwError,
- NULL);
-
- if (!rc) {
- printmsg(0, "sread: Unable to read port errors");
- printNTerror("sread", dwError);
- }
-
- /*--------------------------------------------------------------------*/
- /* Determine when to stop processing */
- /*--------------------------------------------------------------------*/
-
- if ( timeout == 0 )
- {
- stop_time = 0;
- now = 1; /* Any number greater than stop time */
- }
- else {
- time( & now );
- stop_time = now + timeout;
- }
-
- /*--------------------------------------------------------------------*/
- /* Try to read any needed data into the buffer */
- /*--------------------------------------------------------------------*/
-
- do {
- DWORD received;
- DWORD needed = wanted - bufsize;
- DWORD port_timeout;
-
- /*--------------------------------------------------------------------*/
- /* Handle an aborted program */
- /*--------------------------------------------------------------------*/
-
- if ( terminate_processing )
- {
- static boolean recurse = FALSE;
- if ( ! recurse )
- {
- printmsg(2,"sread: User aborted processing");
- recurse = TRUE;
- }
- return 0;
- }
-
- /*--------------------------------------------------------------------*/
- /* Compute a new timeout for the read, if needed */
- /*--------------------------------------------------------------------*/
-
- if (stop_time > now )
- {
- port_timeout = (USHORT) (stop_time - now) / needed * 100;
- if (port_timeout < 100)
- port_timeout = 100;
- }
- else
- port_timeout = 0;
-
- if (!console)
- {
- port_timeout *= 10; /* OS/2 is in hundredths; NT in msec */
- CommTimeout.ReadTotalTimeoutConstant = 0;
- CommTimeout.WriteTotalTimeoutConstant = 0;
- CommTimeout.ReadIntervalTimeout = port_timeout;
- CommTimeout.ReadTotalTimeoutMultiplier = 1;
- CommTimeout.WriteTotalTimeoutMultiplier = 0;
- rc = SetCommTimeouts(hCom, &CommTimeout);
-
- if ( !rc )
- {
- dwError = GetLastError();
- printmsg(0, "sread: unable to set timeout for comm port");
- printNTerror("sread", dwError);
- panic();
- }
- }
-
- #ifdef UDEBUG
- printmsg(15,"sread: Port time out is %ud seconds/100",
- port_timeout);
- #endif
-
- /*--------------------------------------------------------------------*/
- /* Read the data from the serial port */
- /*--------------------------------------------------------------------*/
-
- rc = ReadFile (hCom, &save[bufsize], needed, &received, NULL);
-
- if (!rc) {
- printmsg(0,
- "sread: Read from comm port for %d bytes failed, received = %d.",
- needed, received);
- bufsize = 0;
- return 0;
- }
-
- #ifdef UDEBUG
- printmsg(15,"sread: Want %d characters, received %d, total %d in buffer",
- (int) wanted, (int) received, (int) bufsize + received);
- #endif
-
- /*--------------------------------------------------------------------*/
- /* Log the newly received data */
- /*--------------------------------------------------------------------*/
-
- traceData( &save[bufsize], received, FALSE );
-
- /*--------------------------------------------------------------------*/
- /* If we got the data, return it to the caller */
- /*--------------------------------------------------------------------*/
-
- bufsize += received;
- if ( bufsize == wanted )
- {
- memmove( output, save, bufsize);
- bufsize = 0;
-
- if (debuglevel > 14)
- fwrite(output,1,bufsize,stdout);
-
- return wanted;
- } /* if */
-
- /*--------------------------------------------------------------------*/
- /* Update the clock for the next pass */
- /*--------------------------------------------------------------------*/
-
- if (stop_time > 0)
- time( &now );
-
- } while (stop_time > now);
-
- /*--------------------------------------------------------------------*/
- /* We don't have enough data; report what we do have */
- /*--------------------------------------------------------------------*/
-
- return bufsize;
-
- } /*nsread*/
-
- /*--------------------------------------------------------------------*/
- /* n s w r i t e */
- /* */
- /* Write to the serial port */
- /*--------------------------------------------------------------------*/
-
- int nswrite(const char *input, unsigned int len)
- {
-
- char *data = (char *) input;
-
- DWORD bytes;
- BOOL rc;
- hangupNeeded = TRUE; /* Flag that the port is now dirty */
-
- /*--------------------------------------------------------------------*/
- /* Write the data out as the queue becomes available */
- /*--------------------------------------------------------------------*/
-
- rc = WriteFile (hCom, data, len, &bytes, NULL);
-
- if (!rc) {
- printmsg(0,"swrite: Write to communications port failed.");
-
- return bytes;
- }
-
- /*--------------------------------------------------------------------*/
- /* Log the data written */
- /*--------------------------------------------------------------------*/
-
- traceData( data, len, TRUE);
-
- /*--------------------------------------------------------------------*/
- /* Return bytes written to the port to the caller */
- /*--------------------------------------------------------------------*/
-
- return len;
-
- } /*nswrite*/
-
- /*--------------------------------------------------------------------*/
- /* n s s e n d b r k */
- /* */
- /* send a break signal out the serial port */
- /*--------------------------------------------------------------------*/
-
- void nssendbrk(unsigned int duration)
- {
-
- #ifdef UDEBUG
- printmsg(12, "ssendbrk: %d", duration);
- #endif
-
- SetCommBreak(hCom);
-
- ddelay( duration == 0 ? 200 : duration);
-
- ClearCommBreak(hCom);
-
- } /*nssendbrk*/
-
- /*--------------------------------------------------------------------*/
- /* n c l o s e l i n e */
- /* */
- /* Close the serial port down */
- /*--------------------------------------------------------------------*/
-
- void ncloseline(void)
- {
- DWORD dwError;
-
- if ( ! portActive )
- panic();
-
- portActive = FALSE; /* flag port closed for error handler */
- hangupNeeded = FALSE; /* Don't fiddle with port any more */
-
- /*--------------------------------------------------------------------*/
- /* Lower DTR */
- /*--------------------------------------------------------------------*/
-
- if (!EscapeCommFunction(hCom, CLRDTR | CLRRTS))
- {
- printmsg(0,"ncloseline: Unable to lower DTR/RTS");
- }
-
- /*--------------------------------------------------------------------*/
- /* Actually close the port */
- /*--------------------------------------------------------------------*/
-
- if(!CloseHandle(hCom))
- {
- dwError = GetLastError();
- printmsg(0, "ncloseline: close of serial port failed");
- printNTerror("ncloseline", dwError);
- }
-
- /*--------------------------------------------------------------------*/
- /* Stop logging the data to disk */
- /*--------------------------------------------------------------------*/
-
- traceStop();
-
- } /* ncloseline */
-
- /*--------------------------------------------------------------------*/
- /* n h a n g u p */
- /* */
- /* Hangup the telephone by dropping DTR. Works with HAYES and */
- /* many compatibles. */
- /* 14 May 89 Drew Derbyshire */
- /*--------------------------------------------------------------------*/
-
- void nhangup( void )
- {
- if (!hangupNeeded)
- return;
-
- hangupNeeded = FALSE;
-
- if ( console )
- return;
-
- /*--------------------------------------------------------------------*/
- /* Drop DTR */
- /*--------------------------------------------------------------------*/
-
- if (!EscapeCommFunction(hCom, CLRDTR))
- {
- printmsg(0, "hangup: Unable to lower DTR for comm port");
- panic();
- }
-
- /*--------------------------------------------------------------------*/
- /* Wait for the telephone to hangup */
- /*--------------------------------------------------------------------*/
-
- printmsg(3,"hangup: Dropped DTR");
- carrierdetect = FALSE; /* Modem is not connected */
- ddelay(500); /* Really only need 250 milliseconds */
-
- /*--------------------------------------------------------------------*/
- /* Bring DTR back up */
- /*--------------------------------------------------------------------*/
-
- if (!EscapeCommFunction(hCom, SETDTR))
- {
- printmsg(0, "hangup: Unable to raise DTR for comm port");
- panic();
- }
-
- ddelay(2000); /* Now wait for the poor thing to recover */
-
- } /* nhangup */
-
- /*--------------------------------------------------------------------*/
- /* n S I O S p e e d */
- /* */
- /* Re-specify the speed of an opened serial port */
- /* */
- /* Dropped the DTR off/on calls because this makes a Hayes drop */
- /* the line if configured properly, and we don't want the modem */
- /* to drop the phone on the floor if we are performing */
- /* autobaud. */
- /* */
- /* (Configured properly = standard method of making a Hayes */
- /* hang up the telephone, especially when you can't get it into */
- /* command state because it is at the wrong speed or whatever.) */
- /*--------------------------------------------------------------------*/
-
- void nSIOSpeed(BPS baud)
- {
- USHORT rc;
-
- #ifdef UDEBUG
- printmsg(15,"SIOSpeed: Setting baud rate to %lu",
- (unsigned long) baud);
- #endif
-
- GetCommState (hCom, &dcb);
- dcb.BaudRate = baud;
- rc = SetCommState (hCom, &dcb);
- if (!rc && !console) {
- printmsg(0,"SIOSpeed: Unable to set baud rate for port to %lu",
- (unsigned long) baud);
- panic();
-
- }
-
- currentSpeed = baud;
-
- } /* nSIOSpeed */
-
- /*--------------------------------------------------------------------*/
- /* n f l o w c o n t r o l */
- /* */
- /* Enable/Disable in band (XON/XOFF) flow control */
- /*--------------------------------------------------------------------*/
-
- void nflowcontrol( boolean flow )
- {
- USHORT rc;
- DCB dcb;
- DWORD dwError;
-
- if ( console )
- return;
-
- GetCommState(hCom, &dcb);
- if (flow)
- {
- dcb.fOutX = TRUE;
- dcb.fInX = TRUE;
- dcb.fRtsControl = RTS_CONTROL_ENABLE;
- dcb.fOutxCtsFlow = FALSE;
- } else {
- dcb.fOutX = FALSE;
- dcb.fInX = FALSE;
- dcb.fRtsControl = RTS_CONTROL_ENABLE;
- dcb.fOutxCtsFlow = TRUE;
- }
- rc = SetCommState(hCom, &dcb);
-
- if ( !rc )
- {
- dwError = GetLastError();
-
- printmsg(0,"flowcontrol: Unable to set flow control");
- printNTerror("nflowcontrol", dwError);
-
- panic();
-
- } /*if */
-
- } /* nflowcontrol */
-
- /*--------------------------------------------------------------------*/
- /* n G e t S p e e d */
- /* */
- /* Report current speed of communications connection */
- /*--------------------------------------------------------------------*/
-
- BPS nGetSpeed( void )
- {
- return currentSpeed;
- } /* nGetSpeed */
-
- /*--------------------------------------------------------------------*/
- /* n C D */
- /* */
- /* Return status of carrier detect */
- /*--------------------------------------------------------------------*/
-
- boolean nCD( void )
- {
- boolean previous_carrierdetect = carrierdetect;
- USHORT rc;
-
- DWORD status;
- static DWORD oldstatus = (DWORD) 0xDEADBEEF;
- DWORD dwError;
-
- if ( console )
- return feof( stdin ) == 0;
-
- rc = GetCommModemStatus(hCom, &status);
- if ( !rc )
- {
- dwError = GetLastError();
- printmsg(0,"nCD: Unable to get modem status");
- printNTerror("nCD", dwError);
- panic();
- } /*if */
-
- if ( status != oldstatus )
- {
- ShowModem( status );
- oldstatus = status;
- }
-
- /*--------------------------------------------------------------------*/
- /* If we previously had carrier detect but have lost it, we */
- /* report it was lost. If we do not yet have carrier detect, */
- /* we return success because we may not have connected yet. */
- /*--------------------------------------------------------------------*/
-
- carrierdetect = status && MS_RLSD_ON;
-
- if (previous_carrierdetect)
- return (status && (MS_RLSD_ON || MS_DSR_ON)) ==
- (MS_RLSD_ON || MS_DSR_ON);
- else
- return (status && MS_DSR_ON);
-
- } /* nCD */
-
- /*--------------------------------------------------------------------*/
- /* S h o w M o d e m */
- /* */
- /* Report current modem status */
- /*--------------------------------------------------------------------*/
-
- #define mannounce(flag, bits, text ) ((flag & bits) ? text : "" )
-
- static void ShowModem( const DWORD status )
- {
- if ( debuglevel < 4 )
- return;
-
- printmsg(0, "ShowModem: %#02x%s%s%s%s",
- status,
- mannounce(MS_RLSD_ON, status, " Carrier Detect"),
- mannounce(MS_RING_ON, status, " Ring Indicator"),
- mannounce(MS_DSR_ON, status, " Data Set Ready"),
- mannounce(MS_CTS_ON, status, " Clear to Send"));
-
- } /* ShowModem */
-