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tun has setip and setmtu

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This commit is contained in:
Bjorn Andersson 2006-06-11 15:19:07 +00:00
parent 507ef11bf0
commit c83d6d6983
1 changed files with 50 additions and 0 deletions
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50
tun.c
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@ -24,12 +24,14 @@
#include <sys/stat.h> #include <sys/stat.h>
#include <fcntl.h> #include <fcntl.h>
#include <err.h> #include <err.h>
#include <arpa/inet.h>
#include "tun.h" #include "tun.h"
#define TUN_MAX_TRY 50 #define TUN_MAX_TRY 50
char *tun_device = NULL; char *tun_device = NULL;
char *if_device = NULL;
#ifdef LINUX #ifdef LINUX
@ -61,6 +63,7 @@ open_tun()
if (ioctl(tun_fd, TUNSETIFF, (void *) &ifreq) != -1) { if (ioctl(tun_fd, TUNSETIFF, (void *) &ifreq) != -1) {
printf("Opened %s\n", ifreq.ifr_name); printf("Opened %s\n", ifreq.ifr_name);
if_device = strdup(ifreq.ifr_name);
return tun_fd; return tun_fd;
} }
@ -95,6 +98,7 @@ open_tun()
if ((tun_fd = open(tun_name, O_RDWR)) >= 0) { if ((tun_fd = open(tun_name, O_RDWR)) >= 0) {
printf("Opened %s\n", tun_name); printf("Opened %s\n", tun_name);
if_device = strdup(tun_name);
return tun_fd; return tun_fd;
} }
@ -146,3 +150,49 @@ read_tun(int tun_fd, char *buf, int len)
return read(tun_fd, buf, len); return read(tun_fd, buf, len);
} }
int
tun_setip(const char *ip)
{
char cmdline[512];
if (inet_addr(ip) != 0) {
snprintf(cmdline, sizeof(cmdline),
"/sbin/ifconfig %s %s netmask 255.255.255.0",
tun_device,
ip);
#ifndef LINUX
int r;
r = system(cmdline);
if(r != 0) {
return r;
} else {
snprintf(cmdline, sizeof(cmdline),
"/sbin/route add %s/24 %s",
ip, ip);
}
#endif
return system(cmdline);
}
return 1;
}
int
tun_setmtu(const int mtu)
{
char cmdline[512];
if (mtu > 200 && mtu < 1500) {
snprintf(cmdline, sizeof(cmdline),
"/sbin/ifconfig %s mtu %d",
tun_device,
mtu);
return system(cmdline);
}
return 1;
}