all: import netsniff-ng 0.5.8-rc0 source

We decided to get rid of the old Git history and start a new one for
several reasons:

 *) Allow / enforce only high-quality commits (which was not the case
    for many commits in the history), have a policy that is more close
    to the one from the Linux kernel. With high quality commits, we
    mean code that is logically split into commits and commit messages
    that are signed-off and have a proper subject and message body.
    We do not allow automatic Github merges anymore, since they are
    total bullshit. However, we will either cherry-pick your patches
    or pull them manually.

 *) The old archive was about ~27MB for no particular good reason.
    This basically derived from the bad decision that also some PDF
    files where stored there. From this moment onwards, no binary
    objects are allowed to be stored in this repository anymore.

The old archive is not wiped away from the Internet. You will still
be able to find it, e.g. on git.cryptoism.org etc.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

1 files changed, 163 insertions, 0 deletions

diff --git a/proto_arp.c b/proto_arp.c
new file mode 100644
index 0000000..d6c0eec
--- /dev/null
+++ b/proto_arp.c
@@ -0,0 +1,163 @@
+/*
+ * netsniff-ng - the packet sniffing beast
+ * Copyright 2009, 2010 Daniel Borkmann.
+ * Subject to the GPL, version 2.
+ */
+
+#include <stdint.h>
+#include <netinet/in.h>    /* for ntohs() */
+
+#include "proto.h"
+#include "protos.h"
+#include "dissector_eth.h"
+#include "pkt_buff.h"
+#include "built_in.h"
+
+struct arphdr {
+	uint16_t ar_hrd;   /* format of hardware address */
+	uint16_t ar_pro;   /* format of protocol address */
+	uint8_t ar_hln;    /* length of hardware address */
+	uint8_t ar_pln;    /* length of protocol address */
+	uint16_t ar_op;    /* ARP opcode (command)       */
+	uint8_t ar_sha[6]; /* sender hardware address    */
+	uint8_t ar_sip[4]; /* sender IP address          */
+	uint8_t ar_tha[6]; /* target hardware address    */
+	uint8_t ar_tip[4]; /* target IP address          */
+} __packed;
+
+#define ARPHRD_ETHER	1
+#define ARPHRD_IEEE802	6
+#define ARPHRD_ARCNET	7
+#define ARPHRD_ATM	16
+#define ARPHRD_ATM2	19
+#define ARPHRD_SERIAL	20
+#define ARPHRD_ATM3	21
+#define ARPHRD_IEEE1394	24
+
+#define ARPOP_REQUEST   1  /* ARP request                */
+#define ARPOP_REPLY     2  /* ARP reply                  */
+#define ARPOP_RREQUEST  3  /* RARP request               */
+#define ARPOP_RREPLY    4  /* RARP reply                 */
+#define ARPOP_InREQUEST 8  /* InARP request              */
+#define ARPOP_InREPLY   9  /* InARP reply                */
+#define ARPOP_NAK       10 /* (ATM)ARP NAK               */
+
+static void arp(struct pkt_buff *pkt)
+{
+	char *hrd;
+	char *pro;
+	char *opcode;
+	struct arphdr *arp = (struct arphdr *) pkt_pull(pkt, sizeof(*arp));
+
+	if (arp == NULL)
+		return;
+
+	switch (ntohs(arp->ar_hrd)) {
+	case ARPHRD_ETHER:
+		hrd = "Ethernet";
+		break;
+	case ARPHRD_IEEE802:
+		hrd = "IEEE 802";
+		break;
+	case ARPHRD_ARCNET:
+		hrd = "ARCNET";
+		break;
+	case ARPHRD_ATM:
+	case ARPHRD_ATM2:
+	case ARPHRD_ATM3:
+		hrd = "ATM";
+		break;
+	case ARPHRD_SERIAL:
+		hrd = "Serial Line";
+		break;
+	case ARPHRD_IEEE1394:
+		hrd = "IEEE 1394.1995";
+		break;
+	default:
+		hrd = "Unknown";
+		break;
+	}
+
+	pro = lookup_ether_type(ntohs(arp->ar_pro));
+	if (pro == NULL)
+		pro = "Unknown";
+
+	switch (ntohs(arp->ar_op)) {
+	case ARPOP_REQUEST:
+		opcode = "ARP request";
+		break;
+	case ARPOP_REPLY:
+		opcode = "ARP reply";
+		break;
+	case ARPOP_RREQUEST:
+		opcode = "RARP request";
+		break;
+	case ARPOP_RREPLY:
+		opcode = "RARP reply";
+		break;
+	case ARPOP_InREQUEST:
+		opcode = "InARP request";
+		break;
+	case ARPOP_InREPLY:
+		opcode = "InARP reply";
+		break;
+	case ARPOP_NAK:
+		opcode = "(ATM) ARP NAK";
+		break;
+	default:
+		opcode = "Unknown";
+		break;
+	};
+
+	tprintf(" [ ARP ");
+	tprintf("Format HA (%u => %s), ", ntohs(arp->ar_hrd), hrd);
+	tprintf("Format Proto (0x%.4x => %s), ", ntohs(arp->ar_pro), pro);
+	tprintf("HA Len (%u), ", arp->ar_hln);
+	tprintf("Proto Len (%u), ", arp->ar_pln);
+	tprintf("Opcode (%u => %s)", ntohs(arp->ar_op), opcode);
+	tprintf(" ]\n");
+}
+
+static void arp_less(struct pkt_buff *pkt)
+{
+	char *opcode = NULL;
+	struct arphdr *arp = (struct arphdr *) pkt_pull(pkt, sizeof(*arp));
+
+	if (arp == NULL)
+		return;
+
+	switch (ntohs(arp->ar_op)) {
+	case ARPOP_REQUEST:
+		opcode = "ARP request";
+		break;
+	case ARPOP_REPLY:
+		opcode = "ARP reply";
+		break;
+	case ARPOP_RREQUEST:
+		opcode = "RARP request";
+		break;
+	case ARPOP_RREPLY:
+		opcode = "RARP reply";
+		break;
+	case ARPOP_InREQUEST:
+		opcode = "InARP request";
+		break;
+	case ARPOP_InREPLY:
+		opcode = "InARP reply";
+		break;
+	case ARPOP_NAK:
+		opcode = "(ATM) ARP NAK";
+		break;
+	default:
+		opcode = "Unknown";
+		break;
+	};
+
+	tprintf(" Op %s", opcode);
+}
+
+struct protocol arp_ops = {
+	.key = 0x0806,
+	.print_full = arp,
+	.print_less = arp_less,
+};