lwip-contrib-mac/ports/unix/netif/sio.c
marcbou b1defea1d6 Added authType to pppSetAuth() and CHAP client support
(build unix port with -DLWIP_PPP_CHAP_TEST to test it)
2003-06-27 19:37:16 +00:00

382 lines
8.7 KiB
C
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/* Author: Magnus Ivarsson <magnus.ivarsson@volvo.com> */
#include "netif/sio.h"
#include "netif/fifo.h"
#include "lwip/debug.h"
#include "lwip/def.h"
#include "lwip/sys.h"
#include "lwip/arch.h"
/* Following #undefs are here to keep compiler from issuing warnings
about them being double defined. (They are defined in lwip/inet.h
as well as the Unix #includes below.) */
#undef htonl
#undef ntohl
#undef htons
#undef ntohs
#undef HTONL
#undef NTOHL
#undef HTONS
#undef NTOHS
#include <stdlib.h>
#include <termios.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/signal.h>
#include <sys/types.h>
#if PPP_SUPPORT
#include <pty.h>
#endif
/*#define BAUDRATE B19200 */
/*#define BAUDRATE B57600 */
#define BAUDRATE B115200
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
/* for all of you who dont define SIO_DEBUG in debug.h */
#ifndef SIO_DEBUG
#define SIO_DEBUG 0
#endif
/* typedef struct siostruct_t */
/* { */
/* sio_status_t *sio; */
/* } siostruct_t; */
/** array of ((siostruct*)netif->state)->sio structs */
static sio_status_t statusar[3];
#if ! PPP_SUPPORT
/* --private-functions----------------------------------------------------------------- */
/**
* Signal handler for ttyXX0 to indicate bytes received
* one per interface is needed since we cannot send a instance number / pointer as callback argument (?)
*/
static void signal_handler_IO_0( int status )
{
LWIP_DEBUGF(SIO_DEBUG, ("SigHand: rxSignal channel 0\n"));
fifoPut( &statusar[0].myfifo, statusar[0].fd );
}
/**
* Signal handler for ttyXX1 to indicate bytes received
* one per interface is needed since we cannot send a instance number / pointer as callback argument (?)
*/
static void signal_handler_IO_1( int status )
{
LWIP_DEBUGF(SIO_DEBUG, ("SigHand: rxSignal channel 1\n"));
fifoPut( &statusar[1].myfifo, statusar[1].fd );
}
#endif
/**
* Initiation of serial device
* @param device : string with the device name and path, eg. "/dev/ttyS0"
* @param netif : netinterface struct, contains interface instance data
* @return file handle to serial dev.
*/
static int sio_init( char * device, int devnum, sio_status_t * siostat )
{
struct termios oldtio,newtio;
#if ! PPP_SUPPORT
struct sigaction saio; /* definition of signal action */
#endif
int fd;
/* open the device to be non-blocking (read will return immediately) */
fd = open( device, O_RDWR | O_NOCTTY | O_NONBLOCK );
if ( fd < 0 )
{
perror( device );
exit( -1 );
}
#if ! PPP_SUPPORT
/* install the signal handler before making the device asynchronous */
switch ( devnum )
{
case 0:
LWIP_DEBUGF( SIO_DEBUG, ("sioinit, signal_handler_IO_0\n") );
saio.sa_handler = signal_handler_IO_0;
break;
case 1:
LWIP_DEBUGF( SIO_DEBUG, ("sioinit, signal_handler_IO_1\n") );
saio.sa_handler = signal_handler_IO_1;
break;
default:
LWIP_DEBUGF( SIO_DEBUG,("sioinit, devnum not allowed\n") );
break;
}
saio.sa_flags = 0;
#if linux
saio.sa_restorer = NULL;
#endif /* linux */
sigaction( SIGIO,&saio,NULL );
/* allow the process to receive SIGIO */
fcntl( fd, F_SETOWN, getpid( ) );
/* Make the file descriptor asynchronous (the manual page says only
O_APPEND and O_NONBLOCK, will work with F_SETFL...) */
fcntl( fd, F_SETFL, FASYNC );
#else
fcntl( fd, F_SETFL, 0 );
#endif /* ! PPP_SUPPORT */
tcgetattr( fd,&oldtio ); /* save current port settings */
/* set new port settings */
/* see 'man termios' for further settings */
newtio.c_cflag = BAUDRATE | CS8 | CLOCAL | CREAD | CRTSCTS;
newtio.c_iflag = 0;
newtio.c_oflag = 0;
newtio.c_lflag = 0; /*ECHO; */
newtio.c_cc[VMIN] = 1; /* Read 1 byte at a time, no timer */
newtio.c_cc[VTIME] = 0;
tcsetattr( fd,TCSANOW,&newtio );
tcflush( fd, TCIOFLUSH );
return fd;
}
/**
*
*/
static void sio_speed( int fd, int speed )
{
struct termios oldtio,newtio;
/* int fd; */
LWIP_DEBUGF( 1,("sio_speed: baudcode:%d enter\n",speed ) );
if ( fd < 0 )
{
LWIP_DEBUGF(SIO_DEBUG, ( "sio_speed: fd ERROR\n" ));
exit( -1 );
}
tcgetattr( fd,&oldtio ); /* get current port settings */
/* set new port settings
* see 'man termios' for further settings */
newtio.c_cflag = speed | CS8 | CLOCAL | CREAD; /*<2A> | CRTSCTS; */
newtio.c_iflag = 0;
newtio.c_oflag = 0;
newtio.c_lflag = 0; /*ECHO; */
newtio.c_cc[VMIN] = 1; /* Read 1 byte at a time, no timer */
newtio.c_cc[VTIME] = 0;
tcsetattr( fd,TCSANOW,&newtio );
tcflush( fd, TCIOFLUSH );
LWIP_DEBUGF( SIO_DEBUG ,("sio_speed: leave\n" ));
}
/* --public-functions----------------------------------------------------------------------------- */
void sio_send( u8_t c, sio_status_t * siostat )
{
/* sio_status_t * siostat = ((siostruct_t*)netif->state)->sio; */
if ( write( siostat->fd, &c, 1 ) <= 0 )
{
LWIP_DEBUGF( SIO_DEBUG,("sio_send: write refused\n") );
}
}
void sio_send_string( u8_t *str, sio_status_t * siostat )
{
/* sio_status_t * siostat = ((siostruct_t*)netif->state)->sio; */
int len = strlen( (const char *)str );
if ( write( siostat->fd, str, len ) <= 0 )
{
LWIP_DEBUGF( SIO_DEBUG,("sio_send_string: write refused\n") );
}
LWIP_DEBUGF( (PPP_DEBUG | SIO_DEBUG),("sent:%s\n",str ) );
}
void sio_flush( sio_status_t * siostat )
{
/* not implemented in unix as it is not needed */
/*sio_status_t * siostat = ((siostruct_t*)netif->state)->sio; */
}
#if ! PPP_SUPPORT
/*u8_t sio_recv( struct netif * netif )*/
u8_t sio_recv( sio_status_t * siostat )
{
/* sio_status_t * siostat = ((siostruct_t*)netif->state)->sio; */
return fifoGet( &(siostat->myfifo) );
}
s16_t sio_poll(sio_status_t * siostat)
{
/* sio_status_t * siostat = ((siostruct_t*)netif->state)->sio;*/
return fifoGetNonBlock( &(siostat->myfifo) );
}
void sio_expect_string( u8_t *str, sio_status_t * siostat )
{
/* sio_status_t * siostat = ((siostruct_t*)netif->state)->sio;*/
u8_t c;
int finger=0;
LWIP_DEBUGF( (PPP_DEBUG | SIO_DEBUG), ("expect:%s\n",str) );
while ( 1 )
{
c=fifoGet( &(siostat->myfifo) );
LWIP_DEBUGF( (PPP_DEBUG | SIO_DEBUG), ("_%c",c) );
if ( c==str[finger] )
{
finger++;
} else if ( finger > 0 )
{
/*it might fit in the beginning? */
if ( str[0] == c )
{
finger = 1;
}
}
if ( 0 == str[finger] )
break; /* done, we have a match */
}
LWIP_DEBUGF( (PPP_DEBUG | SIO_DEBUG), ("[match]\n") );
}
#endif /* ! PPP_SUPPORT */
#if PPP_SUPPORT
u32_t sio_write(sio_status_t * siostat, u8_t *buf, u32_t size)
{
return write( siostat->fd, buf, size );
}
u32_t sio_read(sio_status_t * siostat, u8_t *buf, u32_t size)
{
return read( siostat->fd, buf, size );
}
void sio_read_abort(sio_status_t * siostat)
{
printf("sio_read_abort: not yet implemented for unix\n");
}
#endif /* PPP_SUPPORT */
sio_status_t * sio_open( int devnum )
{
char dev[20];
/* would be nice with dynamic memory alloc */
sio_status_t * siostate = &statusar[ devnum ];
/* siostruct_t * tmp; */
/* tmp = (siostruct_t*)(netif->state); */
/* tmp->sio = siostate; */
/* tmp = (siostruct_t*)(netif->state); */
/* ((sio_status_t*)(tmp->sio))->fd = 0; */
#if ! PPP_SUPPORT
fifoInit( &siostate->myfifo );
#endif /* ! PPP_SUPPORT */
sprintf( dev, "/dev/ttyS%d", devnum );
if ( (devnum == 1) || (devnum == 0) )
{
if ( ( siostate->fd = sio_init( dev, devnum, siostate ) ) == 0 )
{
LWIP_DEBUGF(SIO_DEBUG, ( "sio_open: ERROR opening serial device\n" ));
abort( );
return NULL;
}
}
#if PPP_SUPPORT
else if (devnum == 2) {
pid_t childpid;
childpid = forkpty(&siostate->fd, NULL, NULL, NULL);
if(childpid < 0) {
perror("forkpty");
exit (1);
}
if(childpid == 0) {
execl("/usr/sbin/pppd", "pppd",
"ms-dns", "198.168.100.7",
"local", "crtscts",
"debug",
#ifdef LWIP_PPP_CHAP_TEST
"auth",
"require-chap",
"remotename", "lwip",
#else
"noauth",
#endif
"192.168.1.1:192.168.1.2",
NULL);
perror("execl pppd");
exit (1);
} else {
LWIP_DEBUGF(SIO_DEBUG, ( "sio_open: spawned pppd pid %d\n", childpid));
}
}
#endif
else
{
LWIP_DEBUGF(SIO_DEBUG, ( "sio_open: device %s (%d) is not supported\n", dev, devnum ));
return NULL;
}
LWIP_DEBUGF( 1,("sio_open: dev=%s open.\n", dev ));
return siostate;
}
/**
*
*/
void sio_change_baud( sioBaudrates baud, sio_status_t * siostat )
{
/* sio_status_t * siostat = ((siostruct_t*)netif->state)->sio;*/
LWIP_DEBUGF( 1,("sio_change_baud\n" ));
switch ( baud )
{
case SIO_BAUD_9600:
sio_speed( siostat->fd, B9600 );
break;
case SIO_BAUD_19200:
sio_speed( siostat->fd, B19200 );
break;
case SIO_BAUD_38400:
sio_speed( siostat->fd, B38400 );
break;
case SIO_BAUD_57600:
sio_speed( siostat->fd, B57600 );
break;
case SIO_BAUD_115200:
sio_speed( siostat->fd, B115200 );
break;
default:
LWIP_DEBUGF( 1,("sio_change_baud: Unknown baudrate, code:%d\n", baud ));
break;
}
}