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--- send_arp.orig/send_arp.c 2004-06-08 12:28:24.000000000 +0900
+++ send_arp.orig/send_arp.c 2004-06-08 13:47:59.000000000 +0900
@@ -29,14 +29,15 @@
#define ARP_FRAME_TYPE 0x0806
#define ETHER_HW_TYPE 1
#define IP_PROTO_TYPE 0x0800
-#define OP_ARP_REQUEST 2
+#define OP_ARP_REQUEST 1
+#define OP_ARP_REPLY 2
#define DEFAULT_DEVICE "eth0"
char usage[]={"send_arp: sends out custom ARP packet. yuri volobuev'97\n\n\
usage: send_arp sndr_ip_addr sndr_hw_addr\n\
targ_ip_addr targ_hw_addr\n\
- [targ_int [src_hw_addr [dest_hw_addr]]]\n\n"};
+ [[targ_int [src_hw_addr [dest_hw_addr] [request|reply]]\n\n"};
struct arp_packet {
u_char dest_hw_addr[ETH_HW_ADDR_LEN];
@@ -67,7 +68,7 @@
char *c;
int n;
-if(argc < 5 || argc > 8) die(usage);
+if(argc < 5 || argc > 9) die(usage);
sock=socket(AF_INET,SOCK_PACKET,htons(ETH_P_RARP));
if(sock<0){
@@ -80,9 +81,22 @@
pkt.prot_type = htons(IP_PROTO_TYPE);
pkt.hw_addr_size = ETH_HW_ADDR_LEN;
pkt.prot_addr_size = IP_ADDR_LEN;
-pkt.op=htons(OP_ARP_REQUEST);
-if ( argc == 8 ) {
+if ( argc == 9 ) {
+ if (! strcasecmp("request", argv[8])) {
+ pkt.op=htons(OP_ARP_REQUEST);
+ }
+ else if (! strcasecmp("reply", argv[8])) {
+ pkt.op=htons(OP_ARP_REPLY);
+ }
+ else {
+ die("Invalid arp type. Must be \"request\" or \"reply\"");
+ }
+} else {
+ pkt.op=htons(OP_ARP_REQUEST);
+}
+
+if ( argc >= 8 ) {
get_hw_addr(pkt.dest_hw_addr,argv[7]);
} else {
get_hw_addr(pkt.dest_hw_addr,argv[4]);
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