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hping2

    1: /* 
    2:  * $smu-mark$ 
    3:  * $name: linux_sockpacket.c$ 
    4:  * $author: Salvatore Sanfilippo <antirez@invece.org>$ 
    5:  * $copyright: Copyright (C) 1999 by Salvatore Sanfilippo$ 
    6:  * $license: This software is under GPL version 2 of license$ 
    7:  * $date: Fri Nov  5 11:55:48 MET 1999$ 
    8:  * $rev: 8$ 
    9:  */ 
   10: 
   11: #include "hping2.h"
   12: 
   13: #if (defined OSTYPE_LINUX) && (!defined FORCE_LIBPCAP)
   14: #include <sys/types.h>
   15: #include <sys/socket.h>
   16: #include <netinet/in.h>
   17: #include <unistd.h>		/* close */
   18: #include <stdio.h>
   19: 
   20: #include "globals.h"
   21: 
   22: static void enlarge_recvbuf(int fd)
   23: {
   24: 	int val = 131070;
   25: 	int len = sizeof(val);
   26: 
   27: 	/* Don't check the error: non fatal */
   28: 	setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (const char *) &val, len);
   29: }
   30: 
   31: int open_sockpacket()
   32: {
   33: 	int s;
   34: 
   35: 	if (opt_debug)
   36: 		printf("DEBUG: Trying to open PF_PACKET socket... ");
   37: 
   38: 	s = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_IP));
   39: 
   40: 	if (s == -1) {
   41: 		if (opt_debug) {
   42: 			printf("DEBUG: failed ( 2.0.x kernel? )\n");
   43: 			printf("DEBUG: Trying to open SOCK_PACKET socket... ");
   44: 		}
   45: 		s = socket(AF_INET, SOCK_PACKET, htons(ETH_P_IP));
   46: 	}
   47: 
   48: 	if (s == -1) {
   49: 		perror("[open_sockpacket] socket()");
   50: 		return -1;
   51: 	}
   52: 	enlarge_recvbuf(s);
   53: 
   54: 	if (opt_debug)
   55: 		printf("DEBUG: PF_PACKET, SOCK_RAW open OK\n");
   56: 
   57: 	return s;
   58: }
   59: 
   60: int close_sockpacket(int s)
   61: {
   62: 	return close(s);
   63: }
   64: #endif /* OSTYPE_LINUX && !FORCE_LIBPCAP */