569 lines
14 KiB
C
569 lines
14 KiB
C
/*
|
|
* Copyright (c) 2001, Adam Dunkels.
|
|
* Copyright (c) 2009, 2010 Joakim Eriksson, Niclas Finne, Dogan Yazar.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote
|
|
* products derived from this software without specific prior
|
|
* written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
|
|
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
|
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
|
|
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
/* Below define allows importing saved output into Wireshark as "Raw IP" packet type */
|
|
#define WIRESHARK_IMPORT_FORMAT 1
|
|
#include "contiki.h"
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdarg.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <termios.h>
|
|
#include <signal.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#include <netdb.h>
|
|
#include <err.h>
|
|
|
|
#include "net/netstack.h"
|
|
#include "net/packetbuf.h"
|
|
#include "cmd.h"
|
|
#include "border-router-cmds.h"
|
|
|
|
extern int slip_config_verbose;
|
|
extern int slip_config_flowcontrol;
|
|
extern const char *slip_config_siodev;
|
|
extern const char *slip_config_host;
|
|
extern const char *slip_config_port;
|
|
extern uint16_t slip_config_basedelay;
|
|
extern speed_t slip_config_b_rate;
|
|
|
|
#ifdef SLIP_DEV_CONF_SEND_DELAY
|
|
#define SEND_DELAY SLIP_DEV_CONF_SEND_DELAY
|
|
#else
|
|
#define SEND_DELAY 0
|
|
#endif
|
|
|
|
int devopen(const char *dev, int flags);
|
|
|
|
static FILE *inslip;
|
|
|
|
/* for statistics */
|
|
long slip_sent = 0;
|
|
long slip_received = 0;
|
|
|
|
int slipfd = 0;
|
|
|
|
#define PROGRESS(s) do { } while(0)
|
|
|
|
#define SLIP_END 0300
|
|
#define SLIP_ESC 0333
|
|
#define SLIP_ESC_END 0334
|
|
#define SLIP_ESC_ESC 0335
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
static void *
|
|
get_in_addr(struct sockaddr *sa)
|
|
{
|
|
if(sa->sa_family == AF_INET) {
|
|
return &(((struct sockaddr_in *)sa)->sin_addr);
|
|
}
|
|
return &(((struct sockaddr_in6 *)sa)->sin6_addr);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
connect_to_server(const char *host, const char *port)
|
|
{
|
|
/* Setup TCP connection */
|
|
struct addrinfo hints, *servinfo, *p;
|
|
char s[INET6_ADDRSTRLEN];
|
|
int rv, fd;
|
|
|
|
memset(&hints, 0, sizeof hints);
|
|
hints.ai_family = AF_UNSPEC;
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
|
|
if((rv = getaddrinfo(host, port, &hints, &servinfo)) != 0) {
|
|
err(1, "getaddrinfo: %s", gai_strerror(rv));
|
|
return -1;
|
|
}
|
|
|
|
/* loop through all the results and connect to the first we can */
|
|
for(p = servinfo; p != NULL; p = p->ai_next) {
|
|
if((fd = socket(p->ai_family, p->ai_socktype, p->ai_protocol)) == -1) {
|
|
perror("client: socket");
|
|
continue;
|
|
}
|
|
|
|
if(connect(fd, p->ai_addr, p->ai_addrlen) == -1) {
|
|
close(fd);
|
|
perror("client: connect");
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if(p == NULL) {
|
|
err(1, "can't connect to ``%s:%s''", host, port);
|
|
return -1;
|
|
}
|
|
|
|
fcntl(fd, F_SETFL, O_NONBLOCK);
|
|
|
|
inet_ntop(p->ai_family, get_in_addr((struct sockaddr *)p->ai_addr),
|
|
s, sizeof(s));
|
|
|
|
/* all done with this structure */
|
|
freeaddrinfo(servinfo);
|
|
return fd;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
int
|
|
is_sensible_string(const unsigned char *s, int len)
|
|
{
|
|
int i;
|
|
for(i = 1; i < len; i++) {
|
|
if(s[i] == 0 || s[i] == '\r' || s[i] == '\n' || s[i] == '\t') {
|
|
continue;
|
|
} else if(s[i] < ' ' || '~' < s[i]) {
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
slip_packet_input(unsigned char *data, int len)
|
|
{
|
|
packetbuf_copyfrom(data, len);
|
|
if(slip_config_verbose > 0) {
|
|
printf("Packet input over SLIP: %d\n", len);
|
|
}
|
|
NETSTACK_MAC.input();
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* Read from serial, when we have a packet call slip_packet_input. No output
|
|
* buffering, input buffered by stdio.
|
|
*/
|
|
void
|
|
serial_input(FILE *inslip)
|
|
{
|
|
static unsigned char inbuf[2048];
|
|
static int inbufptr = 0;
|
|
int ret, i;
|
|
unsigned char c;
|
|
|
|
#ifdef linux
|
|
ret = fread(&c, 1, 1, inslip);
|
|
if(ret == -1 || ret == 0) {
|
|
err(1, "serial_input: read");
|
|
}
|
|
goto after_fread;
|
|
#endif
|
|
|
|
read_more:
|
|
if(inbufptr >= sizeof(inbuf)) {
|
|
fprintf(stderr, "*** dropping large %d byte packet\n", inbufptr);
|
|
inbufptr = 0;
|
|
}
|
|
ret = fread(&c, 1, 1, inslip);
|
|
#ifdef linux
|
|
after_fread:
|
|
#endif
|
|
if(ret == -1) {
|
|
err(1, "serial_input: read");
|
|
}
|
|
if(ret == 0) {
|
|
clearerr(inslip);
|
|
return;
|
|
}
|
|
slip_received++;
|
|
switch(c) {
|
|
case SLIP_END:
|
|
if(inbufptr > 0) {
|
|
if(inbuf[0] == '!') {
|
|
command_context = CMD_CONTEXT_RADIO;
|
|
cmd_input(inbuf, inbufptr);
|
|
} else if(inbuf[0] == '?') {
|
|
#define DEBUG_LINE_MARKER '\r'
|
|
} else if(inbuf[0] == DEBUG_LINE_MARKER) {
|
|
fwrite(inbuf + 1, inbufptr - 1, 1, stdout);
|
|
} else if(is_sensible_string(inbuf, inbufptr)) {
|
|
if(slip_config_verbose == 1) { /* strings already echoed below for verbose>1 */
|
|
fwrite(inbuf, inbufptr, 1, stdout);
|
|
}
|
|
} else {
|
|
if(slip_config_verbose > 2) {
|
|
printf("Packet from SLIP of length %d - write TUN\n", inbufptr);
|
|
if(slip_config_verbose > 4) {
|
|
#if WIRESHARK_IMPORT_FORMAT
|
|
printf("0000");
|
|
for(i = 0; i < inbufptr; i++) {
|
|
printf(" %02x", inbuf[i]);
|
|
}
|
|
#else
|
|
printf(" ");
|
|
for(i = 0; i < inbufptr; i++) {
|
|
printf("%02x", inbuf[i]);
|
|
if((i & 3) == 3) {
|
|
printf(" ");
|
|
}
|
|
if((i & 15) == 15) {
|
|
printf("\n ");
|
|
}
|
|
}
|
|
#endif
|
|
printf("\n");
|
|
}
|
|
}
|
|
slip_packet_input(inbuf, inbufptr);
|
|
}
|
|
inbufptr = 0;
|
|
}
|
|
break;
|
|
|
|
case SLIP_ESC:
|
|
if(fread(&c, 1, 1, inslip) != 1) {
|
|
clearerr(inslip);
|
|
/* Put ESC back and give up! */
|
|
ungetc(SLIP_ESC, inslip);
|
|
return;
|
|
}
|
|
|
|
switch(c) {
|
|
case SLIP_ESC_END:
|
|
c = SLIP_END;
|
|
break;
|
|
case SLIP_ESC_ESC:
|
|
c = SLIP_ESC;
|
|
break;
|
|
}
|
|
/* FALLTHROUGH */
|
|
default:
|
|
inbuf[inbufptr++] = c;
|
|
|
|
/* Echo lines as they are received for verbose=2,3,5+ */
|
|
/* Echo all printable characters for verbose==4 */
|
|
if(slip_config_verbose == 4) {
|
|
if(c == 0 || c == '\r' || c == '\n' || c == '\t' || (c >= ' ' && c <= '~')) {
|
|
fwrite(&c, 1, 1, stdout);
|
|
}
|
|
} else if(slip_config_verbose >= 2) {
|
|
if(c == '\n' && is_sensible_string(inbuf, inbufptr)) {
|
|
fwrite(inbuf, inbufptr, 1, stdout);
|
|
inbufptr = 0;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
goto read_more;
|
|
}
|
|
unsigned char slip_buf[2048];
|
|
int slip_end, slip_begin, slip_packet_end, slip_packet_count;
|
|
static struct timer send_delay_timer;
|
|
/* delay between slip packets */
|
|
static clock_time_t send_delay = SEND_DELAY;
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
slip_send(int fd, unsigned char c)
|
|
{
|
|
if(slip_end >= sizeof(slip_buf)) {
|
|
err(1, "slip_send overflow");
|
|
}
|
|
slip_buf[slip_end] = c;
|
|
slip_end++;
|
|
slip_sent++;
|
|
if(c == SLIP_END) {
|
|
/* Full packet received. */
|
|
slip_packet_count++;
|
|
if(slip_packet_end == 0) {
|
|
slip_packet_end = slip_end;
|
|
}
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
int
|
|
slip_empty()
|
|
{
|
|
return slip_packet_end == 0;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
slip_flushbuf(int fd)
|
|
{
|
|
int n;
|
|
|
|
if(slip_empty()) {
|
|
return;
|
|
}
|
|
|
|
n = write(fd, slip_buf + slip_begin, slip_packet_end - slip_begin);
|
|
|
|
if(n == -1 && errno != EAGAIN) {
|
|
err(1, "slip_flushbuf write failed");
|
|
} else if(n == -1) {
|
|
PROGRESS("Q"); /* Outqueue is full! */
|
|
} else {
|
|
slip_begin += n;
|
|
if(slip_begin == slip_packet_end) {
|
|
slip_packet_count--;
|
|
if(slip_end > slip_packet_end) {
|
|
memmove(slip_buf, slip_buf + slip_packet_end,
|
|
slip_end - slip_packet_end);
|
|
}
|
|
slip_end -= slip_packet_end;
|
|
slip_begin = slip_packet_end = 0;
|
|
if(slip_end > 0) {
|
|
/* Find end of next slip packet */
|
|
for(n = 1; n < slip_end; n++) {
|
|
if(slip_buf[n] == SLIP_END) {
|
|
slip_packet_end = n + 1;
|
|
break;
|
|
}
|
|
}
|
|
/* a delay between slip packets to avoid losing data */
|
|
if(send_delay > 0) {
|
|
timer_set(&send_delay_timer, send_delay);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
write_to_serial(int outfd, const uint8_t *inbuf, int len)
|
|
{
|
|
const uint8_t *p = inbuf;
|
|
int i;
|
|
|
|
if(slip_config_verbose > 2) {
|
|
#ifdef __CYGWIN__
|
|
printf("Packet from WPCAP of length %d - write SLIP\n", len);
|
|
#else
|
|
printf("Packet from TUN of length %d - write SLIP\n", len);
|
|
#endif
|
|
if(slip_config_verbose > 4) {
|
|
#if WIRESHARK_IMPORT_FORMAT
|
|
printf("0000");
|
|
for(i = 0; i < len; i++) {
|
|
printf(" %02x", p[i]);
|
|
}
|
|
#else
|
|
printf(" ");
|
|
for(i = 0; i < len; i++) {
|
|
printf("%02x", p[i]);
|
|
if((i & 3) == 3) {
|
|
printf(" ");
|
|
}
|
|
if((i & 15) == 15) {
|
|
printf("\n ");
|
|
}
|
|
}
|
|
#endif
|
|
printf("\n");
|
|
}
|
|
}
|
|
|
|
/* It would be ``nice'' to send a SLIP_END here but it's not
|
|
* really necessary.
|
|
*/
|
|
/* slip_send(outfd, SLIP_END); */
|
|
|
|
for(i = 0; i < len; i++) {
|
|
switch(p[i]) {
|
|
case SLIP_END:
|
|
slip_send(outfd, SLIP_ESC);
|
|
slip_send(outfd, SLIP_ESC_END);
|
|
break;
|
|
case SLIP_ESC:
|
|
slip_send(outfd, SLIP_ESC);
|
|
slip_send(outfd, SLIP_ESC_ESC);
|
|
break;
|
|
default:
|
|
slip_send(outfd, p[i]);
|
|
break;
|
|
}
|
|
}
|
|
slip_send(outfd, SLIP_END);
|
|
PROGRESS("t");
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/* writes an 802.15.4 packet to slip-radio */
|
|
void
|
|
write_to_slip(const uint8_t *buf, int len)
|
|
{
|
|
if(slipfd > 0) {
|
|
write_to_serial(slipfd, buf, len);
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
stty_telos(int fd)
|
|
{
|
|
struct termios tty;
|
|
speed_t speed = slip_config_b_rate;
|
|
int i;
|
|
|
|
if(tcflush(fd, TCIOFLUSH) == -1) {
|
|
err(1, "tcflush");
|
|
}
|
|
|
|
if(tcgetattr(fd, &tty) == -1) {
|
|
err(1, "tcgetattr");
|
|
}
|
|
|
|
cfmakeraw(&tty);
|
|
|
|
/* Nonblocking read. */
|
|
tty.c_cc[VTIME] = 0;
|
|
tty.c_cc[VMIN] = 0;
|
|
if(slip_config_flowcontrol) {
|
|
tty.c_cflag |= CRTSCTS;
|
|
} else {
|
|
tty.c_cflag &= ~CRTSCTS;
|
|
}
|
|
tty.c_cflag &= ~HUPCL;
|
|
tty.c_cflag &= ~CLOCAL;
|
|
|
|
cfsetispeed(&tty, speed);
|
|
cfsetospeed(&tty, speed);
|
|
|
|
if(tcsetattr(fd, TCSAFLUSH, &tty) == -1) {
|
|
err(1, "tcsetattr");
|
|
}
|
|
|
|
#if 1
|
|
/* Nonblocking read and write. */
|
|
/* if(fcntl(fd, F_SETFL, O_NONBLOCK) == -1) err(1, "fcntl"); */
|
|
|
|
tty.c_cflag |= CLOCAL;
|
|
if(tcsetattr(fd, TCSAFLUSH, &tty) == -1) {
|
|
err(1, "tcsetattr");
|
|
}
|
|
|
|
i = TIOCM_DTR;
|
|
if(ioctl(fd, TIOCMBIS, &i) == -1) {
|
|
err(1, "ioctl");
|
|
}
|
|
#endif
|
|
|
|
usleep(10 * 1000); /* Wait for hardware 10ms. */
|
|
|
|
/* Flush input and output buffers. */
|
|
if(tcflush(fd, TCIOFLUSH) == -1) {
|
|
err(1, "tcflush");
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
set_fd(fd_set *rset, fd_set *wset)
|
|
{
|
|
/* Anything to flush? */
|
|
if(!slip_empty() && (send_delay == 0 || timer_expired(&send_delay_timer))) {
|
|
FD_SET(slipfd, wset);
|
|
}
|
|
|
|
FD_SET(slipfd, rset); /* Read from slip ASAP! */
|
|
return 1;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
handle_fd(fd_set *rset, fd_set *wset)
|
|
{
|
|
if(FD_ISSET(slipfd, rset)) {
|
|
serial_input(inslip);
|
|
}
|
|
|
|
if(FD_ISSET(slipfd, wset)) {
|
|
slip_flushbuf(slipfd);
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static const struct select_callback slip_callback = { set_fd, handle_fd };
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
slip_init(void)
|
|
{
|
|
setvbuf(stdout, NULL, _IOLBF, 0); /* Line buffered output. */
|
|
|
|
if(slip_config_host != NULL) {
|
|
if(slip_config_port == NULL) {
|
|
slip_config_port = "60001";
|
|
}
|
|
slipfd = connect_to_server(slip_config_host, slip_config_port);
|
|
if(slipfd == -1) {
|
|
err(1, "can't connect to ``%s:%s''", slip_config_host, slip_config_port);
|
|
}
|
|
} else if(slip_config_siodev != NULL) {
|
|
if(strcmp(slip_config_siodev, "null") == 0) {
|
|
/* Disable slip */
|
|
return;
|
|
}
|
|
slipfd = devopen(slip_config_siodev, O_RDWR | O_NONBLOCK);
|
|
if(slipfd == -1) {
|
|
err(1, "can't open siodev ``/dev/%s''", slip_config_siodev);
|
|
}
|
|
} else {
|
|
static const char *siodevs[] = {
|
|
"ttyUSB0", "cuaU0", "ucom0" /* linux, fbsd6, fbsd5 */
|
|
};
|
|
int i;
|
|
for(i = 0; i < 3; i++) {
|
|
slip_config_siodev = siodevs[i];
|
|
slipfd = devopen(slip_config_siodev, O_RDWR | O_NONBLOCK);
|
|
if(slipfd != -1) {
|
|
break;
|
|
}
|
|
}
|
|
if(slipfd == -1) {
|
|
err(1, "can't open siodev");
|
|
}
|
|
}
|
|
|
|
select_set_callback(slipfd, &slip_callback);
|
|
|
|
if(slip_config_host != NULL) {
|
|
fprintf(stderr, "********SLIP opened to ``%s:%s''\n", slip_config_host,
|
|
slip_config_port);
|
|
} else {
|
|
fprintf(stderr, "********SLIP started on ``/dev/%s''\n", slip_config_siodev);
|
|
stty_telos(slipfd);
|
|
}
|
|
|
|
timer_set(&send_delay_timer, 0);
|
|
slip_send(slipfd, SLIP_END);
|
|
inslip = fdopen(slipfd, "r");
|
|
if(inslip == NULL) {
|
|
err(1, "slip_init: fdopen");
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|