Code style fixes
This commit is contained in:
parent
307fc41646
commit
3106840c56
158
tools/tunslip.c
158
tools/tunslip.c
|
@ -1,18 +1,18 @@
|
|||
/*
|
||||
* Copyright (c) 2001, Adam Dunkels.
|
||||
* All rights reserved.
|
||||
* 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.
|
||||
* 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.
|
||||
* written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
|
||||
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
|
@ -24,11 +24,11 @@
|
|||
* 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.
|
||||
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* This file is part of the uIP TCP/IP stack.
|
||||
*
|
||||
* $Id: tunslip.c,v 1.14 2007/05/21 15:22:56 bg- Exp $
|
||||
* $Id: tunslip.c,v 1.15 2008/02/24 21:13:36 adamdunkels Exp $
|
||||
*
|
||||
*/
|
||||
|
||||
|
@ -139,7 +139,7 @@ struct dhcp_light_msg {
|
|||
#define DHCPDECLINE 4
|
||||
#define DHCPACK 5
|
||||
#define DHCPNAK 6
|
||||
#define DHCPRELEASE 7
|
||||
#define DHCPRELEASE 7
|
||||
|
||||
#define BOOTP_BROADCAST 0x8000
|
||||
|
||||
|
@ -416,11 +416,13 @@ 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')
|
||||
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])
|
||||
} else if(s[i] < ' ' || '~' < s[i]) {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
@ -475,13 +477,15 @@ serial_to_tun(FILE *inslip, int outfd)
|
|||
#ifdef linux
|
||||
after_fread:
|
||||
#endif
|
||||
if(ret == -1) err(1, "serial_to_tun: read");
|
||||
if(ret == -1) {
|
||||
err(1, "serial_to_tun: read");
|
||||
}
|
||||
if(ret == 0) {
|
||||
clearerr(inslip);
|
||||
return;
|
||||
fprintf(stderr, "serial_to_tun: EOF\n");
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
/* fprintf(stderr, ".");*/
|
||||
switch(c) {
|
||||
case SLIP_END:
|
||||
|
@ -496,8 +500,9 @@ serial_to_tun(FILE *inslip, int outfd)
|
|||
static struct in_addr ipa;
|
||||
|
||||
inbufptr = 0;
|
||||
if(memcmp(&ipa, &uip.inbuf[4], sizeof(ipa)) == 0)
|
||||
if(memcmp(&ipa, &uip.inbuf[4], sizeof(ipa)) == 0) {
|
||||
break;
|
||||
}
|
||||
|
||||
/* New address. */
|
||||
if(ipa.s_addr != 0) {
|
||||
|
@ -525,28 +530,31 @@ serial_to_tun(FILE *inslip, int outfd)
|
|||
/*
|
||||
* If sensible ASCII string, print it as debug info!
|
||||
*/
|
||||
if (uip.inbuf[0] == DEBUG_LINE_MARKER)
|
||||
if(uip.inbuf[0] == DEBUG_LINE_MARKER) {
|
||||
fwrite(uip.inbuf + 1, inbufptr - 1, 1, stderr);
|
||||
else if (is_sensible_string(uip.inbuf, inbufptr))
|
||||
} else if(is_sensible_string(uip.inbuf, inbufptr)) {
|
||||
fwrite(uip.inbuf, inbufptr, 1, stderr);
|
||||
else
|
||||
} else {
|
||||
fprintf(stderr,
|
||||
"serial_to_tun: drop packet len=%d ecode=%d\n",
|
||||
inbufptr, ecode);
|
||||
}
|
||||
inbufptr = 0;
|
||||
break;
|
||||
}
|
||||
PROGRESS("s");
|
||||
|
||||
if (dhsock != -1) {
|
||||
if(dhsock != -1) {
|
||||
struct ip *ip = (void *)uip.inbuf;
|
||||
if (ip->ip_p == 17 && ip->ip_dst == 0xffffffff /* UDP and broadcast */
|
||||
&& ip->uh_sport == ntohs(BOOTPC) && ip->uh_dport == ntohs(BOOTPS)){
|
||||
if(ip->ip_p == 17 && ip->ip_dst == 0xffffffff /* UDP and broadcast */
|
||||
&& ip->uh_sport == ntohs(BOOTPC) && ip->uh_dport == ntohs(BOOTPS)) {
|
||||
relay_dhcp_to_server(ip, inbufptr);
|
||||
inbufptr = 0;
|
||||
}
|
||||
}
|
||||
if(write(outfd, uip.inbuf, inbufptr) != inbufptr) err(1, "serial_to_tun: write");
|
||||
if(write(outfd, uip.inbuf, inbufptr) != inbufptr) {
|
||||
err(1, "serial_to_tun: write");
|
||||
}
|
||||
inbufptr = 0;
|
||||
}
|
||||
break;
|
||||
|
@ -566,7 +574,7 @@ serial_to_tun(FILE *inslip, int outfd)
|
|||
case SLIP_ESC_ESC:
|
||||
c = SLIP_ESC;
|
||||
break;
|
||||
}
|
||||
}
|
||||
/* FALLTHROUGH */
|
||||
default:
|
||||
uip.inbuf[inbufptr++] = c;
|
||||
|
@ -604,14 +612,15 @@ slip_flushbuf(int fd)
|
|||
|
||||
n = write(fd, slip_buf + slip_begin, (slip_end - slip_begin));
|
||||
|
||||
if (n == -1 && errno != EAGAIN)
|
||||
if(n == -1 && errno != EAGAIN) {
|
||||
err(1, "slip_flushbuf write failed");
|
||||
else if (n == -1)
|
||||
} else if(n == -1) {
|
||||
PROGRESS("Q"); /* Outqueueis full! */
|
||||
else {
|
||||
} else {
|
||||
slip_begin += n;
|
||||
if (slip_begin == slip_end)
|
||||
if(slip_begin == slip_end) {
|
||||
slip_begin = slip_end = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -631,13 +640,14 @@ write_to_serial(int outfd, void *inbuf, int len)
|
|||
return;
|
||||
}
|
||||
|
||||
if (iphdr->ip_id == 0 && iphdr->ip_off & IP_DF) {
|
||||
if(iphdr->ip_id == 0 && iphdr->ip_off & IP_DF) {
|
||||
uint16_t nid = htons(ip_id++);
|
||||
iphdr->ip_id = nid;
|
||||
nid = ~nid; /* negate */
|
||||
iphdr->ip_sum += nid; /* add */
|
||||
if (iphdr->ip_sum < nid) /* 1-complement overflow? */
|
||||
if(iphdr->ip_sum < nid) { /* 1-complement overflow? */
|
||||
iphdr->ip_sum++;
|
||||
}
|
||||
ecode = check_ip(inbuf, len);
|
||||
if(ecode < 0) {
|
||||
fprintf(stderr, "tun_to_serial: drop packet %d\n", ecode);
|
||||
|
@ -759,12 +769,12 @@ tun_alloc(char *dev)
|
|||
|
||||
memset(&ifr, 0, sizeof(ifr));
|
||||
|
||||
/* Flags: IFF_TUN - TUN device (no Ethernet headers)
|
||||
* IFF_TAP - TAP device
|
||||
/* Flags: IFF_TUN - TUN device (no Ethernet headers)
|
||||
* IFF_TAP - TAP device
|
||||
*
|
||||
* IFF_NO_PI - Do not provide packet information
|
||||
*/
|
||||
ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
|
||||
* IFF_NO_PI - Do not provide packet information
|
||||
*/
|
||||
ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
|
||||
if(*dev != 0)
|
||||
strncpy(ifr.ifr_name, dev, IFNAMSIZ);
|
||||
|
||||
|
@ -836,14 +846,16 @@ ifconf(const char *tundev, const char *ipaddr, const char *netmask)
|
|||
|
||||
#ifdef linux
|
||||
ssystem("ifconfig %s inet `hostname` up", tundev);
|
||||
if (strcmp(ipaddr, "0.0.0.0") != 0)
|
||||
if(strcmp(ipaddr, "0.0.0.0") != 0) {
|
||||
ssystem("route add -net %s netmask %s dev %s",
|
||||
inet_ntoa(netname), netmask, tundev);
|
||||
}
|
||||
#else
|
||||
ssystem("ifconfig %s inet `hostname` %s up", tundev, ipaddr);
|
||||
if (strcmp(ipaddr, "0.0.0.0") != 0)
|
||||
if(strcmp(ipaddr, "0.0.0.0") != 0) {
|
||||
ssystem("route add -net %s -netmask %s -interface %s",
|
||||
inet_ntoa(netname), netmask, tundev);
|
||||
}
|
||||
ssystem("sysctl -w net.inet.ip.forwarding=1");
|
||||
#endif /* !linux */
|
||||
|
||||
|
@ -867,7 +879,7 @@ main(int argc, char **argv)
|
|||
|
||||
setvbuf(stdout, NULL, _IOLBF, 0); /* Line buffered output. */
|
||||
|
||||
while ((c = getopt(argc, argv, "B:D:hs:t:")) != -1) {
|
||||
while((c = getopt(argc, argv, "B:D:hs:t:")) != -1) {
|
||||
switch (c) {
|
||||
case 'B':
|
||||
baudrate = atoi(optarg);
|
||||
|
@ -878,17 +890,19 @@ main(int argc, char **argv)
|
|||
break;
|
||||
|
||||
case 's':
|
||||
if (strncmp("/dev/", optarg, 5) == 0)
|
||||
if(strncmp("/dev/", optarg, 5) == 0) {
|
||||
siodev = optarg + 5;
|
||||
else
|
||||
} else {
|
||||
siodev = optarg;
|
||||
}
|
||||
break;
|
||||
|
||||
case 't':
|
||||
if (strncmp("/dev/", optarg, 5) == 0)
|
||||
if(strncmp("/dev/", optarg, 5) == 0) {
|
||||
strcpy(tundev, optarg + 5);
|
||||
else
|
||||
} else {
|
||||
strcpy(tundev, optarg);
|
||||
}
|
||||
break;
|
||||
|
||||
case '?':
|
||||
|
@ -901,14 +915,15 @@ main(int argc, char **argv)
|
|||
argc -= (optind - 1);
|
||||
argv += (optind - 1);
|
||||
|
||||
if (argc != 3 && argc != 4)
|
||||
if(argc != 3 && argc != 4) {
|
||||
err(1, "usage: tunslip [-s siodev] [-t tundev] [-D dhcp-server] ipaddress netmask [dhcp-server]");
|
||||
}
|
||||
ipaddr = argv[1];
|
||||
netmask = argv[2];
|
||||
circuit_addr = inet_addr(ipaddr);
|
||||
netaddr = inet_addr(ipaddr) & inet_addr(netmask);
|
||||
|
||||
switch (baudrate) {
|
||||
switch(baudrate) {
|
||||
case -2:
|
||||
break; /* Use default. */
|
||||
case 9600:
|
||||
|
@ -935,22 +950,23 @@ main(int argc, char **argv)
|
|||
* Set up DHCP relay agent socket and find the address of this relay
|
||||
* agent.
|
||||
*/
|
||||
if (argc == 4) {
|
||||
if(argc == 4) {
|
||||
dhcp_server = argv[3];
|
||||
}
|
||||
if (dhcp_server != NULL) {
|
||||
if(dhcp_server != NULL) {
|
||||
struct sockaddr_in myaddr;
|
||||
socklen_t len;
|
||||
in_addr_t a;
|
||||
|
||||
if (strchr(dhcp_server, ':') != NULL) {
|
||||
if(strchr(dhcp_server, ':') != NULL) {
|
||||
dhport = atoi(strchr(dhcp_server, ':') + 1);
|
||||
myport = dhport + 1;
|
||||
*strchr(dhcp_server, ':') = '\0';
|
||||
}
|
||||
a = inet_addr(dhcp_server);
|
||||
if (a == -1)
|
||||
if(a == -1) {
|
||||
err(1, "illegal dhcp-server address");
|
||||
}
|
||||
#ifndef linux
|
||||
dhaddr.sin_len = sizeof(dhaddr);
|
||||
#endif
|
||||
|
@ -959,8 +975,9 @@ main(int argc, char **argv)
|
|||
dhaddr.sin_addr.s_addr = a;
|
||||
|
||||
dhsock = socket(AF_INET, SOCK_DGRAM, 0);
|
||||
if (dhsock < 0)
|
||||
if(dhsock < 0) {
|
||||
err (1, "socket");
|
||||
}
|
||||
memset(&myaddr, 0x0, sizeof(myaddr));
|
||||
#ifndef linux
|
||||
myaddr.sin_len = sizeof(myaddr);
|
||||
|
@ -968,15 +985,18 @@ main(int argc, char **argv)
|
|||
myaddr.sin_family = AF_INET;
|
||||
myaddr.sin_addr.s_addr = INADDR_ANY;
|
||||
myaddr.sin_port = htons(myport);
|
||||
if (bind(dhsock, (struct sockaddr *)&myaddr, sizeof(myaddr)) < 0)
|
||||
if(bind(dhsock, (struct sockaddr *)&myaddr, sizeof(myaddr)) < 0) {
|
||||
err(1, "bind dhcp-relay");
|
||||
}
|
||||
|
||||
if (connect(dhsock, (struct sockaddr *)&dhaddr, sizeof(dhaddr)) < 0)
|
||||
if(connect(dhsock, (struct sockaddr *)&dhaddr, sizeof(dhaddr)) < 0) {
|
||||
err(1, "connect to dhcp-server");
|
||||
}
|
||||
|
||||
len = sizeof(myaddr);
|
||||
if (getsockname(dhsock, (struct sockaddr *)&myaddr, &len) < 0)
|
||||
if(getsockname(dhsock, (struct sockaddr *)&myaddr, &len) < 0) {
|
||||
err(1, "getsockname dhsock");
|
||||
}
|
||||
|
||||
giaddr = myaddr.sin_addr.s_addr;
|
||||
|
||||
|
@ -985,19 +1005,23 @@ main(int argc, char **argv)
|
|||
*/
|
||||
close(dhsock);
|
||||
dhsock = socket(AF_INET, SOCK_DGRAM, 0);
|
||||
if (dhsock < 0)
|
||||
if(dhsock < 0) {
|
||||
err (1, "socket");
|
||||
}
|
||||
myaddr.sin_family = AF_INET;
|
||||
myaddr.sin_addr.s_addr = INADDR_ANY;
|
||||
myaddr.sin_port = htons(myport);
|
||||
if (bind(dhsock, (struct sockaddr *)&myaddr, sizeof(myaddr)) < 0)
|
||||
if(bind(dhsock, (struct sockaddr *)&myaddr, sizeof(myaddr)) < 0) {
|
||||
err(1, "bind dhcp-relay");
|
||||
}
|
||||
fprintf(stderr, "DHCP server at %s:%d\n", dhcp_server, dhport);
|
||||
}
|
||||
|
||||
if (siodev != NULL) {
|
||||
if(siodev != NULL) {
|
||||
slipfd = devopen(siodev, O_RDWR | O_NONBLOCK);
|
||||
if (slipfd == -1) err(1, "can't open siodev ``/dev/%s''", siodev);
|
||||
if(slipfd == -1) {
|
||||
err(1, "can't open siodev ``/dev/%s''", siodev);
|
||||
}
|
||||
} else {
|
||||
static const char *siodevs[] = {
|
||||
"ttyUSB0", "cuaU0", "ucom0" /* linux, fbsd6, fbsd5 */
|
||||
|
@ -1009,7 +1033,9 @@ main(int argc, char **argv)
|
|||
if (slipfd != -1)
|
||||
break;
|
||||
}
|
||||
if (slipfd == -1) err(1, "can't open siodev");
|
||||
if(slipfd == -1) {
|
||||
err(1, "can't open siodev");
|
||||
}
|
||||
}
|
||||
fprintf(stderr, "slip started on ``/dev/%s''\n", siodev);
|
||||
stty_telos(slipfd);
|
||||
|
@ -1043,8 +1069,9 @@ main(int argc, char **argv)
|
|||
got_sigalarm = 0;
|
||||
}
|
||||
|
||||
if (!slip_empty()) /* Anything to flush? */
|
||||
if(!slip_empty()) { /* Anything to flush? */
|
||||
FD_SET(slipfd, &wset);
|
||||
}
|
||||
|
||||
FD_SET(slipfd, &rset); /* Read from slip ASAP! */
|
||||
if(slipfd > maxfd) maxfd = slipfd;
|
||||
|
@ -1060,12 +1087,13 @@ main(int argc, char **argv)
|
|||
}
|
||||
|
||||
ret = select(maxfd + 1, &rset, &wset, NULL, NULL);
|
||||
if(ret == -1 && errno != EINTR)
|
||||
if(ret == -1 && errno != EINTR) {
|
||||
err(1, "select");
|
||||
else if(ret > 0) {
|
||||
if(FD_ISSET(slipfd, &rset))
|
||||
} else if(ret > 0) {
|
||||
if(FD_ISSET(slipfd, &rset)) {
|
||||
serial_to_tun(inslip, tunfd);
|
||||
|
||||
}
|
||||
|
||||
if(FD_ISSET(slipfd, &wset)) {
|
||||
slip_flushbuf(slipfd);
|
||||
sigalarm_reset();
|
||||
|
|
Loading…
Reference in a new issue