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cleanup of tun.c

This commit is contained in:
Erik Ekman 2009-01-25 19:53:20 +00:00
parent e67b9ea628
commit 9a6af7e615
1 changed files with 45 additions and 49 deletions
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58
src/tun.c
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@ -47,12 +47,13 @@ struct tun_data data;
#include <netinet/in.h>
#define TUN_MAX_TRY 50
char if_name[50];
#endif
#include "tun.h"
#include "common.h"
char if_name[50];
#ifndef WINDOWS32
#ifdef LINUX
@ -244,10 +245,8 @@ DWORD WINAPI tun_reader(LPVOID arg)
if (!res) {
WaitForSingleObject(olpd.hEvent, INFINITE);
res = GetOverlappedResult(dev_handle, &olpd, (LPDWORD) &len, FALSE);
printf("Read %d bytes!\n", len);
res = sendto(sock, buf, len, 0, (struct sockaddr*) &(tun->addr),
sizeof(struct sockaddr_in));
printf("send done %d, %02X %02X %02X\n", res, buf[0], buf[1], buf[2]);
}
}
@ -275,7 +274,8 @@ open_tun(const char *tun_device)
return -1;
}
printf("Opened handle: %p\n", dev_handle);
/* TODO get name of interface */
strncpy(if_name, "dns", MIN(4, sizeof(if_name)));
/* Use a UDP connection to forward packets from tun,
* so we can still use select() in main code.
@ -370,15 +370,20 @@ read_tun(int tun_fd, char *buf, size_t len)
int
tun_setip(const char *ip, int netbits)
{
#ifndef WINDOWS32
char cmdline[512];
int netmask;
struct in_addr net;
int i;
#ifndef LINUX
int r;
#endif
#ifdef WINDOWS32
DWORD status;
DWORD ipdata[3];
struct in_addr addr;
DWORD len;
#endif
netmask = 0;
for (i = 0; i < netbits; i++) {
netmask = (netmask << 1) | 1;
@ -386,7 +391,11 @@ tun_setip(const char *ip, int netbits)
netmask <<= (32 - netbits);
net.s_addr = htonl(netmask);
if (inet_addr(ip) != INADDR_NONE) {
if (inet_addr(ip) == INADDR_NONE) {
printf("Invalid IP: %s!\n", ip);
return 1;
}
#ifndef WINDOWS32
snprintf(cmdline, sizeof(cmdline),
"/sbin/ifconfig %s %s %s netmask %s",
if_name,
@ -407,35 +416,18 @@ tun_setip(const char *ip, int netbits)
printf("Adding route %s/%d to %s\n", ip, netbits, ip);
#endif
return system(cmdline);
} else {
printf("Invalid IP: %s!\n", ip);
}
return 1;
#else /* WINDOWS32 */
DWORD status;
DWORD ipdata[3];
struct in_addr addr;
int i;
int netmask;
DWORD len;
BOOL res;
printf("Given IP %s\n", ip);
/* Set device as connected */
printf("Enabling interface '%s'\n", if_name);
status = 1;
res =DeviceIoControl(dev_handle, TAP_IOCTL_SET_MEDIA_STATUS, &status,
r = DeviceIoControl(dev_handle, TAP_IOCTL_SET_MEDIA_STATUS, &status,
sizeof(status), &status, sizeof(status), &len, NULL);
if (!res) {
if (!r) {
return -1;
}
netmask = 0;
for (i = 0; i < netbits; i++) {
netmask = (netmask << 1) | 1;
}
netmask <<= (32 - netbits);
ipdata[2] = (DWORD) htonl(netmask);
ipdata[2] = (DWORD) net.s_addr;
if (inet_aton(ip, &addr)) {
ipdata[0] = (DWORD) addr.s_addr;
@ -443,11 +435,15 @@ tun_setip(const char *ip, int netbits)
} else {
return -1;
}
res = DeviceIoControl(dev_handle, TAP_IOCTL_CONFIG_TUN, &ipdata,
/* Tell ip/network addr/netmask to device for arp use */
r = DeviceIoControl(dev_handle, TAP_IOCTL_CONFIG_TUN, &ipdata,
sizeof(ipdata), &ipdata, sizeof(ipdata), &len, NULL);
if (!res) {
if (!r) {
return -1;
}
/* TODO use netsh to set ip address */
cmdline[0] = 0;
return 0;
#endif
}