void netSetDefaultRoute( char *gw )
{
struct rtentry re;
struct sockaddr_in *in_addr;
unsigned char *addr;
int fd;
unsigned char adr_gw[4];
scanip( gw, adr_gw );
memset(&re,0,sizeof(struct rtentry));
in_addr = (struct sockaddr_in *)&re.rt_dst;
in_addr->sin_family = AF_INET;
in_addr = (struct sockaddr_in *)&re.rt_gateway;
in_addr->sin_family = AF_INET;
addr=(unsigned char*)&in_addr->sin_addr.s_addr;
in_addr = (struct sockaddr_in *)&re.rt_genmask;
in_addr->sin_family = AF_INET;
fd=socket(AF_INET,SOCK_DGRAM,0);
if ( fd < 0 )
return;
re.rt_flags = RTF_GATEWAY | RTF_UP;
memcpy(addr,adr_gw,4);
ioctl(fd,SIOCADDRT,&re);
close(fd);
return;
}
int netSetIP( char *dev, char *ip, char *mask, char *brdcast )
{
int fd;
struct ifreq req;
int rc=-1;
unsigned char adr_ip[4];
unsigned char adr_mask[4];
unsigned char adr_brdcast[4];
struct sockaddr_in addr;
fd=socket(AF_INET,SOCK_DGRAM,0);
if ( !fd )
return -1;
scanip( ip, adr_ip );
scanip( mask, adr_mask );
scanip( brdcast, adr_brdcast );
/* init structures */
bzero(&req,sizeof(req));
strcpy(req.ifr_name,dev);
bzero(&addr,sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = *((unsigned long *) adr_ip);
memcpy(&req.ifr_addr,&addr,sizeof(addr));
if( ioctl(fd,SIOCSIFADDR,&req) < 0 )
goto abbruch;
addr.sin_addr.s_addr = *((unsigned long *) adr_mask);
memcpy(&req.ifr_addr,&addr,sizeof(addr));
if( ioctl(fd,SIOCSIFNETMASK,&req) < 0 )
goto abbruch;
addr.sin_addr.s_addr = *((unsigned long *) adr_brdcast);
memcpy(&req.ifr_addr,&addr,sizeof(addr));
if( ioctl(fd,SIOCSIFBRDADDR,&req) < 0 )
goto abbruch;
rc = 0;
abbruch:
close(fd);
return rc;
}
int scan(void)
{
int sockfd;
while(1)
{
sockfd=scanip();
if(sockfd==0)
{
printf("cannot match\n");
}
else
{
printf("scan success\n");
close(sockfd);
break;
}
sleep(60);
}
}
