63 lines
1.2 KiB
C
63 lines
1.2 KiB
C
#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <net/if.h>
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#include <net/route.h>
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#include <arpa/inet.h>
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#include <sys/ioctl.h>
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int main( void )
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{
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struct sockaddr_in * addr;
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char *ifname = getenv( "IFNAME" ),
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*client = getenv( "CLIENT" ),
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*getway = getenv( "ROUTER" ),
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*mask = getenv( "MASK" );
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int fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
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// IP
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{
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struct ifreq iface;
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iface.ifr_addr.sa_family = AF_INET;
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strcpy( iface.ifr_name, ifname );
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addr = &iface.ifr_addr;
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addr->sin_family = AF_INET;
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addr->sin_addr.s_addr = inet_addr(client);
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ioctl(fd, SIOCSIFADDR, &iface);
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addr->sin_family = AF_INET;
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addr->sin_addr.s_addr = inet_addr(mask);
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ioctl(fd, SIOCSIFNETMASK, &iface);
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iface.ifr_flags |= ( IFF_UP | IFF_RUNNING );
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ioctl(fd, SIOCSIFFLAGS, &iface);
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}
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// ROUTE
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{
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struct rtentry route;
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addr = &route.rt_dst;
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addr->sin_family = AF_INET;
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addr->sin_addr.s_addr = INADDR_ANY;
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addr = &route.rt_gateway;
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addr->sin_family = AF_INET;
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addr->sin_addr.s_addr = inet_addr(getway);
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addr = &route.rt_genmask;
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addr->sin_family = AF_INET;
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addr->sin_addr.s_addr = INADDR_ANY;
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route.rt_flags = RTF_UP | RTF_GATEWAY ;
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ioctl(fd, SIOCADDRT, &route);
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}
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close(fd);
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return 0;
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}
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