first draft

2022-04-13 18:01:39 +08:00
commit 906782e134
111 changed files with 15383 additions and 0 deletions
--- a/sendip.c
+++ b/sendip.c
@ -0,0 +1,134 @@
+/* 
+ * $smu-mark$ 
+ * $name: sendip.c$ 
+ * $author: Salvatore Sanfilippo <antirez@invece.org>$ 
+ * $copyright: Copyright (C) 1999 by Salvatore Sanfilippo$ 
+ * $license: This software is under GPL version 2 of license$ 
+ * $date: Fri Nov  5 11:55:49 MET 1999$ 
+ * $rev: 8$ 
+ */ 
+
+/* $Id: sendip.c,v 1.7 2003/08/01 13:28:07 njombart Exp $ */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "hping2.h"
+#include "globals.h"
+
+void send_ip (char* src, char *dst, char *data, unsigned int datalen,
+		int more_fragments, unsigned short fragoff, char *options,
+		char optlen)
+{
+	char		*packet;
+	int		result,
+			packetsize;
+	struct myiphdr	*ip;
+
+	packetsize = IPHDR_SIZE + optlen + datalen;
+	if ( (packet = malloc(packetsize)) == NULL) {
+		perror("[send_ip] malloc()");
+		return;
+	}
+
+	memset(packet, 0, packetsize);
+	ip = (struct myiphdr*) packet;
+
+	/* copy src and dst address */
+	memcpy(&ip->saddr, src, sizeof(ip->saddr));
+	memcpy(&ip->daddr, dst, sizeof(ip->daddr));
+
+	/* build ip header */
+	ip->version	= 4;
+	ip->ihl		= (IPHDR_SIZE + optlen + 3) >> 2;
+	ip->tos		= ip_tos;
+
+#if defined OSTYPE_FREEBSD || defined OSTYPE_NETBSD || defined OSTYPE_BSDI
+/* FreeBSD */
+/* NetBSD */
+	ip->tot_len	= packetsize;
+#else
+/* Linux */
+/* OpenBSD */
+	ip->tot_len	= htons(packetsize);
+#endif
+
+	if (!opt_fragment)
+	{
+		ip->id		= (src_id == -1) ?
+			htons((unsigned short) rand()) :
+			htons((unsigned short) src_id);
+	}
+	else /* if you need fragmentation id must not be randomic */
+	{
+		/* FIXME: when frag. enabled sendip_handler shold inc. ip->id */
+		/*        for every frame sent */
+		ip->id		= (src_id == -1) ?
+			htons(getpid() & 255) :
+			htons((unsigned short) src_id);
+	}
+
+#if defined OSTYPE_FREEBSD || defined OSTYPE_NETBSD || defined OSTYPE_BSDI
+/* FreeBSD */
+/* NetBSD */
+	ip->frag_off	|= more_fragments;
+	ip->frag_off	|= fragoff >> 3;
+#else
+/* Linux */
+/* OpenBSD */
+	ip->frag_off	|= htons(more_fragments);
+	ip->frag_off	|= htons(fragoff >> 3); /* shift three flags bit */
+#endif
+
+	ip->ttl		= src_ttl;
+	if (opt_rawipmode)	ip->protocol = raw_ip_protocol;
+	else if	(opt_icmpmode)	ip->protocol = 1;	/* icmp */
+	else if (opt_udpmode)	ip->protocol = 17;	/* udp  */
+	else			ip->protocol = 6;	/* tcp  */
+	ip->check	= 0; /* always computed by the kernel */
+
+	/* copies options */
+	if (options != NULL)
+		memcpy(packet+IPHDR_SIZE, options, optlen);
+
+	/* copies data */
+	memcpy(packet + IPHDR_SIZE + optlen, data, datalen);
+	
+    if (opt_debug == TRUE)
+    {
+        unsigned int i;
+
+        for (i=0; i<packetsize; i++)
+            printf("%.2X ", packet[i]&255);
+        printf("\n");
+    }
+	result = sendto(sockraw, packet, packetsize, 0,
+		(struct sockaddr*)&remote, sizeof(remote));
+	
+	if (result == -1 && errno != EINTR && !opt_rand_dest && !opt_rand_source) {
+		perror("[send_ip] sendto");
+		if (close(sockraw) == -1)
+			perror("[ipsender] close(sockraw)");
+#if (!defined OSTYPE_LINUX) || (defined FORCE_LIBPCAP)
+		if (close_pcap() == -1)
+			printf("[ipsender] close_pcap failed\n");
+#else
+		if (close_sockpacket(sockpacket) == -1)
+			perror("[ipsender] close(sockpacket)");
+#endif /* ! OSTYPE_LINUX || FORCE_LIBPCAP */
+		exit(1);
+	}
+
+	free(packet);
+
+	sum_bytes += packetsize;
+	sum_packets++;
+	/* inc packet id for safe protocol */
+	if (opt_safe && !eof_reached)
+		src_id++;
+}