www.pudn.com > src.rar > allpromisc.c

#include "nids.h" 
#ifdef __linux__ 
#include  
#include  
#include  
#include  
#include  
#include  
 
int set_all_promisc() 
{ 
	struct ifreq * ifaces; 
	int ifaces_size=8 * sizeof(struct ifreq); 
	struct ifconf param; 
	int sock; 
	unsigned int i; 
 
	sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP); 
	if (sock <= 0) 
		return 0; 
        do { 
        ifaces_size*=2; 
        ifaces=alloca(ifaces_size); 
	param.ifc_len = ifaces_size; 
	param.ifc_req = ifaces; 
	if (ioctl(sock, SIOCGIFCONF, ¶m)) 
		goto err; 
	} while (param.ifc_len>=ifaces_size);	 
	for (i = 0; i < param.ifc_len / sizeof(struct ifreq); i++) { 
		if (ioctl(sock, SIOCGIFFLAGS, ifaces + i)) 
			goto err; 
		ifaces[i].ifr_flags |= IFF_PROMISC; 
		if (ioctl(sock, SIOCSIFFLAGS, ifaces + i)) 
			goto err; 
	} 
	close(sock); 
	return 1; 
err: 
	close(sock); 
	return 0;	 
} 
 
#endif