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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/tcpdump/print-null.c	Lines:	0	64	0.0 %
Date:	2017-11-07	Branches:	0	37	0.0 %


/*	$OpenBSD: print-null.c,v 1.22 2015/11/05 17:57:37 jca Exp $	*/

/*
 * Copyright (c) 1991, 1993, 1994, 1995, 1996, 1997
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that: (1) source code distributions
 * retain the above copyright notice and this paragraph in its entirety, (2)
 * distributions including binary code include the above copyright notice and
 * this paragraph in its entirety in the documentation or other materials
 * provided with the distribution, and (3) all advertising materials mentioning
 * features or use of this software display the following acknowledgement:
 * ``This product includes software developed by the University of California,
 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
 * the University nor the names of its contributors may be used to endorse
 * or promote products derived from this software without specific prior
 * written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#include <sys/time.h>
#include <sys/socket.h>
#include <sys/file.h>
#include <sys/ioctl.h>

struct mbuf;
struct rtentry;
#include <net/if.h>

#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/if_ether.h>
#include <netinet/ip_var.h>
#include <netinet/udp.h>
#include <netinet/udp_var.h>
#include <netinet/tcp.h>

#include <pcap.h>
#include <stdio.h>
#include <string.h>

#ifdef INET6
#include <netinet/ip6.h>
#endif

#include "interface.h"
#include "addrtoname.h"

#ifndef AF_NS
#define AF_NS		6		/* XEROX NS protocols */
#endif

/*
 * The DLT_NULL packet header is 4 bytes long. It contains a host
 * order 32 bit integer that specifies the family, e.g. AF_INET
 */
#define	NULL_HDRLEN 4

static void
null_print(const u_char *p, const struct ip *ip, u_int length)
{
	u_int family;

	memcpy((char *)&family, (char *)p, sizeof(family));

	if (nflag && family != AF_LINK) {
		/* XXX just dump the header */
		return;
	}
	switch (family) {

	case AF_INET:
		printf("ip: ");
		break;

#ifdef INET6
	case AF_INET6:
		printf("ip6: ");
		break;
#endif

	case AF_NS:
		printf("ns: ");
		break;

#ifdef __OpenBSD__
	case AF_LINK:
		ether_print(p + NULL_HDRLEN, length);
		break;
#endif
	case AF_MPLS:
		printf("mpls: ");
		break;

	default:
		printf("AF %d: ", family);
		break;
	}
}

void
loop_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
{
	*(u_int *)p = ntohl(*(u_int *)p);

	null_if_print(user, h, p);
}

void
null_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
{
	u_int length = h->len;
	u_int caplen = h->caplen;
	u_int family = *(u_int *)p;

#ifdef __OpenBSD__
	struct ether_header *ep;
	u_short ether_type;
	extern u_short extracted_ethertype;
#endif

	ts_print(&h->ts);

	/*
	 * Some printers want to get back at the link level addresses,
	 * and/or check that they're not walking off the end of the packet.
	 * Rather than pass them all the way down, we set these globals.
	 */
	packetp = p;
	snapend = p + caplen;

	length -= NULL_HDRLEN;

	if (eflag)
		null_print(p, (struct ip *)(p + NULL_HDRLEN), length);

	switch (family) {
	case AF_INET:
		ip_print(p + NULL_HDRLEN, length);
		break;

#ifdef INET6
	case AF_INET6:
		ip6_print(p + NULL_HDRLEN, length);
		break;
#endif /*INET6*/

	case AF_MPLS:
		mpls_print(p + NULL_HDRLEN, length);
		break;

#ifdef __OpenBSD__
	case AF_LINK:
		if (caplen < sizeof(struct ether_header) + NULL_HDRLEN) {
			printf("[|ether]");
			goto out;
		}

		length -= sizeof(struct ether_header);
		caplen -= sizeof(struct ether_header);
		ep = (struct ether_header *)(p + NULL_HDRLEN);
		p += NULL_HDRLEN + sizeof(struct ether_header);
		packetp += sizeof(struct ether_header);
		ether_type = ntohs(ep->ether_type);

		extracted_ethertype = 0;
		if (ether_type <= ETHERMTU) {
			/* Try to print the LLC-layer header & higher layers */
			if (llc_print(p, length, caplen, ESRC(ep),
			    EDST(ep)) == 0) {
				/* ether_type not known, print raw packet */
				if (!eflag)
					ether_print((u_char *)ep, length);
				if (extracted_ethertype) {
					printf("(LLC %s) ",
					       etherproto_string(htons(extracted_ethertype)));
				}
				if (!xflag && !qflag)
					default_print(p, caplen - NULL_HDRLEN);
			}
		} else if (ether_encap_print(ether_type, p, length,
		           caplen) == 0) {
			/* ether_type not known, print raw packet */
			if (!eflag)
				ether_print((u_char *)ep, length +
				    sizeof(*ep));
			if (!xflag && !qflag)
				default_print(p, caplen - NULL_HDRLEN);
		}
		break;
#endif /* __OpenBSD__ */
	}

	if (xflag)
		default_print((const u_char *)(packetp + NULL_HDRLEN),
		    caplen - NULL_HDRLEN);
 out:
	putchar('\n');
}



Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: print-null.c,v 1.22 2015/11/05 17:57:37 jca Exp $ */
2
3			/*
4			* Copyright (c) 1991, 1993, 1994, 1995, 1996, 1997
5			* The Regents of the University of California. All rights reserved.
6			*
7			* Redistribution and use in source and binary forms, with or without
8			* modification, are permitted provided that: (1) source code distributions
9			* retain the above copyright notice and this paragraph in its entirety, (2)
10			* distributions including binary code include the above copyright notice and
11			* this paragraph in its entirety in the documentation or other materials
12			* provided with the distribution, and (3) all advertising materials mentioning
13			* features or use of this software display the following acknowledgement:
14			* ``This product includes software developed by the University of California,
15			* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
16			* the University nor the names of its contributors may be used to endorse
17			* or promote products derived from this software without specific prior
18			* written permission.
19			* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
20			* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
21			* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
22			*/
23
24			#include <sys/time.h>
25			#include <sys/socket.h>
26			#include <sys/file.h>
27			#include <sys/ioctl.h>
28
29			struct mbuf;
30			struct rtentry;
31			#include <net/if.h>
32
33			#include <netinet/in.h>
34			#include <netinet/ip.h>
35			#include <netinet/if_ether.h>
36			#include <netinet/ip_var.h>
37			#include <netinet/udp.h>
38			#include <netinet/udp_var.h>
39			#include <netinet/tcp.h>
40
41			#include <pcap.h>
42			#include <stdio.h>
43			#include <string.h>
44
45			#ifdef INET6
46			#include <netinet/ip6.h>
47			#endif
48
49			#include "interface.h"
50			#include "addrtoname.h"
51
52			#ifndef AF_NS
53			#define AF_NS 6 /* XEROX NS protocols */
54			#endif
55
56			/*
57			* The DLT_NULL packet header is 4 bytes long. It contains a host
58			* order 32 bit integer that specifies the family, e.g. AF_INET
59			*/
60			#define NULL_HDRLEN 4
61
62			static void
63			null_print(const u_char p, const struct ip ip, u_int length)
64			{
65			u_int family;
66
67			memcpy((char )&family, (char )p, sizeof(family));
68
69			if (nflag && family != AF_LINK) {
70			/* XXX just dump the header */
71			return;
72			}
73			switch (family) {
74
75			case AF_INET:
76			printf("ip: ");
77			break;
78
79			#ifdef INET6
80			case AF_INET6:
81			printf("ip6: ");
82			break;
83			#endif
84
85			case AF_NS:
86			printf("ns: ");
87			break;
88
89			#ifdef __OpenBSD__
90			case AF_LINK:
91			ether_print(p + NULL_HDRLEN, length);
92			break;
93			#endif
94			case AF_MPLS:
95			printf("mpls: ");
96			break;
97
98			default:
99			printf("AF %d: ", family);
100			break;
101			}
102			}
103
104			void
105			loop_if_print(u_char user, const struct pcap_pkthdr h, const u_char *p)
106			{
107			(u_int )p = ntohl((u_int )p);
108
109			null_if_print(user, h, p);
110			}
111
112			void
113			null_if_print(u_char user, const struct pcap_pkthdr h, const u_char *p)
114			{
115			u_int length = h->len;
116			u_int caplen = h->caplen;
117			u_int family = (u_int )p;
118
119			#ifdef __OpenBSD__
120			struct ether_header *ep;
121			u_short ether_type;
122			extern u_short extracted_ethertype;
123			#endif
124
125			ts_print(&h->ts);
126
127			/*
128			* Some printers want to get back at the link level addresses,
129			* and/or check that they're not walking off the end of the packet.
130			* Rather than pass them all the way down, we set these globals.
131			*/
132			packetp = p;
133			snapend = p + caplen;
134
135			length -= NULL_HDRLEN;
136
137			if (eflag)
138			null_print(p, (struct ip *)(p + NULL_HDRLEN), length);
139
140			switch (family) {
141			case AF_INET:
142			ip_print(p + NULL_HDRLEN, length);
143			break;
144
145			#ifdef INET6
146			case AF_INET6:
147			ip6_print(p + NULL_HDRLEN, length);
148			break;
149			#endif /INET6/
150
151			case AF_MPLS:
152			mpls_print(p + NULL_HDRLEN, length);
153			break;
154
155			#ifdef __OpenBSD__
156			case AF_LINK:
157			if (caplen < sizeof(struct ether_header) + NULL_HDRLEN) {
158			printf("[\|ether]");
159			goto out;
160			}
161
162			length -= sizeof(struct ether_header);
163			caplen -= sizeof(struct ether_header);
164			ep = (struct ether_header *)(p + NULL_HDRLEN);
165			p += NULL_HDRLEN + sizeof(struct ether_header);
166			packetp += sizeof(struct ether_header);
167			ether_type = ntohs(ep->ether_type);
168
169			extracted_ethertype = 0;
170			if (ether_type <= ETHERMTU) {
171			/* Try to print the LLC-layer header & higher layers */
172			if (llc_print(p, length, caplen, ESRC(ep),
173			EDST(ep)) == 0) {
174			/* ether_type not known, print raw packet */
175			if (!eflag)
176			ether_print((u_char *)ep, length);
177			if (extracted_ethertype) {
178			printf("(LLC %s) ",
179			etherproto_string(htons(extracted_ethertype)));
180			}
181			if (!xflag && !qflag)
182			default_print(p, caplen - NULL_HDRLEN);
183			}
184			} else if (ether_encap_print(ether_type, p, length,
185			caplen) == 0) {
186			/* ether_type not known, print raw packet */
187			if (!eflag)
188			ether_print((u_char *)ep, length +
189			sizeof(*ep));
190			if (!xflag && !qflag)
191			default_print(p, caplen - NULL_HDRLEN);
192			}
193			break;
194			#endif /* __OpenBSD__ */
195			}
196
197			if (xflag)
198			default_print((const u_char *)(packetp + NULL_HDRLEN),
199			caplen - NULL_HDRLEN);
200			out:
201			putchar('\n');
202			}
203