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Add processing of command line options but stay backwards compatible.

This commit is contained in:
bg- 2006-09-07 15:48:47 +00:00
parent 2a221971f4
commit e521d25241
1 changed files with 60 additions and 16 deletions
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76
tools/tunslip.c
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@ -28,7 +28,7 @@
*
* This file is part of the uIP TCP/IP stack.
*
* $Id: tunslip.c,v 1.1 2006/08/02 14:40:47 bg- Exp $
* $Id: tunslip.c,v 1.2 2006/09/07 15:48:47 bg- Exp $
*
*/
@ -689,6 +689,15 @@ stty_telos(int fd)
if(tcflush(fd, TCIOFLUSH) == -1) err(1, "tcflush");
}
int
devopen(const char *dev, int flags)
{
char t[32];
strcpy(t, "/dev/");
strcat(t, dev);
return open(t, flags);
}
#ifdef linux
#include <linux/if.h>
#include <linux/if_tun.h>
@ -724,10 +733,7 @@ tun_alloc(char *dev)
int
tun_alloc(char *dev)
{
char t[32];
strcpy(t, "/dev/");
strcat(t, dev);
return open(t, O_RDWR);
return devopen(dev, O_RDWR);
}
#endif
@ -772,15 +778,47 @@ ifconf(const char *tundev, const char *ipaddr, const char *netmask)
int
main(int argc, char **argv)
{
int c;
int tunfd, slipfd, maxfd;
int ret;
fd_set rset, wset;
FILE *inslip;
const char *siodev;
const char *siodev = NULL;
const char *dhcp_server = NULL;
u_int16_t myport = BOOTPS, dhport = BOOTPS;
ip_id = getpid() * time(NULL);
while ((c = getopt(argc, argv, "D:hs:t:")) != -1) {
switch (c) {
case 'D':
dhcp_server = optarg;
break;
case 's':
if (strncmp("/dev/", optarg, 5) == 0)
siodev = optarg + 5;
else
siodev = optarg;
break;
case 't':
if (strncmp("/dev/", optarg, 5) == 0)
strcpy(tundev, optarg + 5);
else
strcpy(tundev, optarg);
break;
case '?':
case 'h':
default:
err(1, "usage: tunslip [-s siodev] [-t tundev] [-d dhcp-server] ipaddress netmask [dhcp-server]");
break;
}
}
argc -= (optind - 1);
argv += (optind - 1);
if (argc != 3 && argc != 4)
err(1, "usage: tunslip ipaddress netmask [dhcp-server]");
ipaddr = argv[1];
@ -793,16 +831,19 @@ main(int argc, char **argv)
* agent.
*/
if (argc == 4) {
dhcp_server = optarg;
}
if (dhcp_server != NULL) {
struct sockaddr_in myaddr;
socklen_t len;
in_addr_t a;
if (strchr(argv[3], ':') != NULL) {
dhport = atoi(strchr(argv[3], ':') + 1);
if (strchr(dhcp_server, ':') != NULL) {
dhport = atoi(strchr(dhcp_server, ':') + 1);
myport = dhport + 1;
*strchr(argv[3], ':') = '\0';
*strchr(dhcp_server, ':') = '\0';
}
a = inet_addr(argv[3]);
a = inet_addr(dhcp_server);
if (a == -1)
err(1, "illegal dhcp-server address");
#ifndef linux
@ -846,23 +887,26 @@ main(int argc, char **argv)
myaddr.sin_port = htons(myport);
if (bind(dhsock, (struct sockaddr *)&myaddr, sizeof(myaddr)) < 0)
err(1, "bind dhcp-relay");
fprintf(stderr, "DHCP server at %s:%d\n", argv[3], dhport);
fprintf(stderr, "DHCP server at %s:%d\n", dhcp_server, dhport);
}
{
if (siodev != NULL) {
slipfd = devopen(siodev, O_RDWR | O_NONBLOCK);
if (slipfd == -1) err(1, "can't open siodev ``/dev/%s''", siodev);
} else {
static const char *siodevs[] = {
"/dev/ttyUSB0", "/dev/ucom0", "/dev/cuaU0"
"ttyUSB0", "ucom0", "cuaU0"
};
int i;
for(i = 0; i < 3; i++) {
siodev = siodevs[i];
slipfd = open(siodev, O_RDWR | O_NONBLOCK);
slipfd = devopen(siodev, O_RDWR | O_NONBLOCK);
if (slipfd != -1)
break;
}
if (slipfd == -1) err(1, "can't open slipdev");
if (slipfd == -1) err(1, "can't open siodev");
}
fprintf(stderr, "slip started on ``%s''\n", siodev);
fprintf(stderr, "slip started on ``/dev/%s''\n", siodev);
stty_telos(slipfd);
slip_send(slipfd, SLIP_END);
inslip = fdopen(slipfd, "r");