/*---------------------------------------------------------------- * serlinux.c - low-level Linux serial routines *---------------------------------------------------------------- *  libnet is (c) Copyright Chad Catlett and George Foot 1997-1999 * *  Please look in `docs' for details, documentation and *  distribution conditions. */#include "platdefs.h"/* If we can use Linux serial ports, do so.  */#ifdef __USE_REAL_SERIAL_LINUX__#include <stdlib.h>#include <stdio.h>#include <string.h>#include <unistd.h>#include <fcntl.h>#include <termios.h>#include <sys/signal.h>#include <sys/time.h>#include "serial.h"/* We could support more, but few people need it.  */#define MAX_PORT	8struct port {    int fd;    struct termios oldtio;};typedef struct port port_t;static struct {    int baudrate;    int bits;    int parity;    int stopbits;} config[MAX_PORT] = {   { B115200, CS8, 0, 0 },   { B115200, CS8, 0, 0 },   { B115200, CS8, 0, 0 },   { B115200, CS8, 0, 0 },   { B115200, CS8, 0, 0 },   { B115200, CS8, 0, 0 },   { B115200, CS8, 0, 0 },   { B115200, CS8, 0, 0 }};int __libnet_internal__serial_send (port_t *p,				    const unsigned char *buf, int size){    return write (p->fd, buf, size);}int __libnet_internal__serial_read (port_t *p, unsigned char *buf, int size){    return read (p->fd, buf, size);}port_t *__libnet_internal__serial_open (int portnum){    struct termios tio;    char device[20];    port_t *p;    int fd;    if ((portnum < 0) || (portnum >= MAX_PORT))	return NULL;    sprintf (device, "/dev/ttyS%d", portnum);    fd = open (device, O_RDWR | O_NOCTTY | O_NONBLOCK);    if (fd < 0)	return NULL;    p = malloc (sizeof *p);    if (!p) {	close (fd);	return NULL;    }    p->fd = fd;    tcgetattr (fd, &p->oldtio);    memset (&tio, 0, sizeof tio);    tio.c_cflag = (CLOCAL | CREAD		   | config[portnum].baudrate 		   | config[portnum].bits 		   | config[portnum].parity		   | config[portnum].stopbits);		   /* CRTSCTS should be added if the DOS code 		    * ever gets hardware flow control. */    tio.c_iflag = IGNPAR;    tio.c_oflag = 0;    tio.c_lflag = 0;    tio.c_cc[VTIME] = 0;    tio.c_cc[VMIN] = 0;    tcflush (fd, TCIOFLUSH);    tcsetattr (fd, TCSANOW, &tio);    return p;}void __libnet_internal__serial_close (port_t *p){    tcdrain (p->fd);        tcsetattr (p->fd, TCSANOW, &p->oldtio);    close (p->fd);    free (p);}static int baudrate (int baud){    switch (baud) {	case 300:    return B300;	case 600:    return B600;	case 1200:   return B1200;	case 2400:   return B2400;	case 9600:   return B9600;	case 19200:  return B19200;	case 38400:  return B38400;	case 57600:  return B57600;	case 115200: return B115200;	default:     return -1;    }}static int bits (int bits){    switch (bits) {	case 5:  return CS5;	case 6:  return CS6;	case 7:  return CS7;	case 8:  return CS8;	default: return -1;    }}static int stopbits (int bits){    switch (bits) {	case 1:  return 0;	case 2:  return CSTOPB;	default: return -1;    }}static int parity (char *p) {    if (!strcmp (p, "none")) return 0;    if (!strcmp (p, "even")) return PARENB;    if (!strcmp (p, "odd"))  return PARENB | PARODD;    return -1;}void __libnet_internal__serial_load_config (int portnum, char *option,					    char *value){    #define SET(type, value)				\	do {						\	    int x = type (value);			\	    if (x != -1) config[portnum].type = x;	\	} while (0)        if      (!strcmp (option, "baudrate")) SET (baudrate, atoi (value));    else if (!strcmp (option, "bits"))	   SET (bits,	  atoi (value));    else if (!strcmp (option, "stopbits")) SET (stopbits, atoi (value));    else if (!strcmp (option, "parity"))   SET (parity,   value);}int __libnet_internal__serial_init (void) { return 0; }int __libnet_internal__serial_exit (void) { return 0; }#endif /* __USE_REAL_SERIAL_LINUX__ */