Commit 072b3e39 authored by deuce's avatar deuce
Browse files

Add *nix comio implementation.

parent 8619b77d
......@@ -54,9 +54,34 @@
#define COM_RING MS_RING_ON
#define COM_DCD MS_RLSD_ON
#else
#include <termios.h>
#define COM_HANDLE int
#define COM_HANDLE_INVALID -1
#define COM_ERROR_VALUE errno
/* Stuff we apparently don't care about... */
*
* TIOCM_LE Line Enable.
* TIOCM_DTR Data Terminal Ready.
* TIOCM_RTS Request To Send.
* TIOCM_ST Secondary Transmit.
* TIOCM_SR Secondary Receive.
*/
#define COM_CTS TIOCM_CTS /* Clear To Send. */
#ifdef TIOCM_CAR
#define COM_DCD TIOCM_CAR /* Carrier Detect. */
#else
#define COM_DCD TIOCM_CD /* Carrier Detect (synonym). */
#endif
#ifdef TIOCM_RNG
#define COM_RING TIOCM_RNG /* Ring Indication. */
#else
#define COM_RING TIOCM_RI /* Ring Indication (synonym). */
#endif
#define COM_DSR TIOCM_DSR /* Data Set Ready. */
#endif
/**************/
......
/* comio_nix.c */
/* Synchronet Serial Communications I/O Library Functions for *nix */
/* $Id$ */
/****************************************************************************
* @format.tab-size 4 (Plain Text/Source Code File Header) *
* @format.use-tabs true (see http://www.synchro.net/ptsc_hdr.html) *
* *
* Copyright 2007 Rob Swindell - http://www.synchro.net/copyright.html *
* *
* 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 *
* of the License, or (at your option) any later version. *
* See the GNU Lesser General Public License for more details: lgpl.txt or *
* http://www.fsf.org/copyleft/lesser.html *
* *
* Anonymous FTP access to the most recent released source is available at *
* ftp://vert.synchro.net, ftp://cvs.synchro.net and ftp://ftp.synchro.net *
* *
* Anonymous CVS access to the development source and modification history *
* is available at cvs.synchro.net:/cvsroot/sbbs, example: *
* cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs login *
* (just hit return, no password is necessary) *
* cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs checkout src *
* *
* For Synchronet coding style and modification guidelines, see *
* http://www.synchro.net/source.html *
* *
* You are encouraged to submit any modifications (preferably in Unix diff *
* format) via e-mail to mods@synchro.net *
* *
* Note: If this box doesn't appear square, then you need to fix your tabs. *
****************************************************************************/
#include <sys/file.h>
#include "comio.h"
#include "genwrap.h"
char* comVersion(char* str, size_t len)
{
char revision[16];
sscanf("$Revision$", "%*s %s", revision);
safe_snprintf(str,len,"Synchronet Communications I/O Library for "PLATFORM_DESC" v%s", revision);
return str;
}
COM_HANDLE comOpen(const char* device)
{
COM_HANDLE handle;
struct termios t;
if((handle=open(device, O_NONBLOCK|O_RDWR)==INVALID_HANDLE_VALUE)
return COM_HANDLE_INVALID;
if(tcgetattr(handle, &t)==-1) {
close(device);
return COM_HANDLE_INVALID;
}
t.c_iflag = (
IGNBRK /* ignore BREAK condition */
| IGNPAR /* ignore (discard) parity errors */
);
t.c_oflag = 0; /* No output processing */
t.c_cflag = (
CS8 /* 8 bits */
| CREAD /* enable receiver */
/*
Fun snippet from the FreeBSD manpage:
If CREAD is set, the receiver is enabled. Otherwise, no character is
received. Not all hardware supports this bit. In fact, this flag is
pretty silly and if it were not part of the termios specification it
would be omitted.
*/
| HUPCL /* hang up on last close */
| CLOCAL /* ignore modem status lines */
/* The next two are pretty much never used */
#ifdef CCTX_OFLOW
| CCTS_OFLOW /* CTS flow control of output */
#endif
#ifdef CRTSCTS
| CRTSCTS /* same as CCTS_OFLOW */
#endif
#ifdef CRTS_IFLOW
| CRTS_IFLOW /* RTS flow control of input */
#endif
);
t.c_lflag = 0; /* No local modes */
if(tcsetattr(handle, TCSANOW, &t)==-1) {
close(device);
return COM_HANDLE_INVALID;
}
return handle;
}
BOOL comClose(COM_HANDLE handle)
{
return (!close(handle));
}
long comGetBaudRate(COM_HANDLE handle)
{
struct termios t;
speed_t in;
speed_t out;
if(tcgetattr(handle, &t))
return COM_ERROR;
/*
* We actually have TWO speeds available...
* return the biggest one
*/
in = cfgetispeed(&t);
out = cfgetospeed(&t);
return ((long)(in>out?in:out));
}
BOOL comSetBaudRate(COM_HANDLE handle, unsigned long rate)
{
struct termios t;
if(tcgetattr(handle, &t))
return FALSE;
cfsetispeed(&t);
cfsetospeed(&t);
if(tcsetattr(handle, TCSANOW, &t)==-1)
return FALSE;
return TRUE;
}
int comGetModemStatus(COM_HANDLE handle)
{
int status;
if(ioctl(handle, TIOCMGET, &status)==-1)
return COM_ERROR;
return status;
}
BOOL comRaiseDTR(COM_HANDLE handle)
{
return(ioctl(handle, TIOCSDTR)==0);
}
BOOL comLowerDTR(COM_HANDLE handle)
{
return(ioctl(handle, TIOCCDTR)==0);
}
BOOL comWriteByte(COM_HANDLE handle, BYTE ch)
{
return(write(handle, &ch, 1)==1);
}
int comWriteBuf(COM_HANDLE handle, const BYTE* buf, size_t buflen)
{
return write(handle, &buf, buflen);
}
/*
* TODO: This seem kinda dangerous for short writes...
*/
int comWriteString(COM_HANDLE handle, const char* str)
{
return comWriteBuf(handle, str, strlen(str));
}
BOOL comReadByte(COM_HANDLE handle, BYTE* ch)
{
return(read(handle, ch, 1)==1);
}
BOOL comPurgeInput(COM_HANDLE handle)
{
int what = FREAD;
return(ioctl(handle, TIOCFLUSH, &what)==0);
}
BOOL comPurgeOutput(COM_HANDLE handle)
{
int what = FWRITE;
return(ioctl(handle, TIOCFLUSH, &what)==0);
}
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