1/*
2 * ip.c		"ip" utility frontend.
3 *
4 *		This program is free software; you can redistribute it and/or
5 *		modify it under the terms of the GNU General Public License
6 *		as published by the Free Software Foundation; either version
7 *		2 of the License, or (at your option) any later version.
8 *
9 * Authors:	Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
10 *
11 *
12 * Changes:
13 *
14 * Rani Assaf <rani@magic.metawire.com> 980929:	resolve addresses
15 */
16
17#include <stdio.h>
18#include <stdlib.h>
19#include <unistd.h>
20#include <syslog.h>
21#include <fcntl.h>
22#include <sys/socket.h>
23#include <netinet/in.h>
24#include <string.h>
25
26#include "SNAPSHOT.h"
27#include "utils.h"
28#include "ip_common.h"
29
30int preferred_family = AF_UNSPEC;
31int show_stats = 0;
32int resolve_hosts = 0;
33int oneline = 0;
34char * _SL_ = NULL;
35
36static void usage(void) __attribute__((noreturn));
37
38static void usage(void)
39{
40	fprintf(stderr,
41"Usage: ip [ OPTIONS ] OBJECT { COMMAND | help }\n"
42"where  OBJECT := { link | addr | route | rule | neigh | tunnel |\n"
43"                   maddr | mroute | monitor }\n"
44"       OPTIONS := { -V[ersion] | -s[tatistics] | -r[esolve] |\n"
45"                    -f[amily] { inet | inet6 | ipx | dnet | link } | -o[neline] }\n");
46	exit(-1);
47}
48
49int main(int argc, char **argv)
50{
51	char *basename;
52
53	basename = strrchr(argv[0], '/');
54	if (basename == NULL)
55		basename = argv[0];
56	else
57		basename++;
58
59	while (argc > 1) {
60		char *opt = argv[1];
61		if (strcmp(opt,"--") == 0) {
62			argc--; argv++;
63			break;
64		}
65		if (opt[0] != '-')
66			break;
67		if (opt[1] == '-')
68			opt++;
69		if (matches(opt, "-family") == 0) {
70			argc--;
71			argv++;
72			if (argc <= 1)
73				usage();
74			if (strcmp(argv[1], "inet") == 0)
75				preferred_family = AF_INET;
76			else if (strcmp(argv[1], "inet6") == 0)
77				preferred_family = AF_INET6;
78			else if (strcmp(argv[1], "dnet") == 0)
79				preferred_family = AF_DECnet;
80			else if (strcmp(argv[1], "link") == 0)
81				preferred_family = AF_PACKET;
82			else if (strcmp(argv[1], "ipx") == 0)
83				preferred_family = AF_IPX;
84			else if (strcmp(argv[1], "help") == 0)
85				usage();
86			else
87				invarg(argv[1], "invalid protocol family");
88		} else if (strcmp(opt, "-4") == 0) {
89			preferred_family = AF_INET;
90		} else if (strcmp(opt, "-6") == 0) {
91			preferred_family = AF_INET6;
92		} else if (strcmp(opt, "-0") == 0) {
93			preferred_family = AF_PACKET;
94		} else if (strcmp(opt, "-I") == 0) {
95			preferred_family = AF_IPX;
96		} else if (strcmp(opt, "-D") == 0) {
97			preferred_family = AF_DECnet;
98		} else if (matches(opt, "-stats") == 0 ||
99			   matches(opt, "-statistics") == 0) {
100			++show_stats;
101		} else if (matches(opt, "-resolve") == 0) {
102			++resolve_hosts;
103		} else if (matches(opt, "-oneline") == 0) {
104			++oneline;
105#if 0
106		} else if (matches(opt, "-numeric") == 0) {
107			rtnl_names_numeric++;
108#endif
109		} else if (matches(opt, "-Version") == 0) {
110			printf("ip utility, iproute2-ss%s\n", SNAPSHOT);
111			exit(0);
112		} else if (matches(opt, "-help") == 0) {
113			usage();
114		} else {
115			fprintf(stderr, "Option \"%s\" is unknown, try \"ip -help\".\n", opt);
116			exit(-1);
117		}
118		argc--;	argv++;
119	}
120
121	_SL_ = oneline ? "\\" : "\n" ;
122
123	if (strcmp(basename, "ipaddr") == 0)
124		return do_ipaddr(argc-1, argv+1);
125	if (strcmp(basename, "ipmaddr") == 0)
126		return do_multiaddr(argc-1, argv+1);
127	if (strcmp(basename, "iproute") == 0)
128		return do_iproute(argc-1, argv+1);
129	if (strcmp(basename, "iprule") == 0)
130		return do_iprule(argc-1, argv+1);
131	if (strcmp(basename, "ipneigh") == 0)
132		return do_ipneigh(argc-1, argv+1);
133	if (strcmp(basename, "iplink") == 0)
134		return do_iplink(argc-1, argv+1);
135	if (strcmp(basename, "iptunnel") == 0)
136		return do_iptunnel(argc-1, argv+1);
137	if (strcmp(basename, "ipmonitor") == 0)
138		return do_ipmonitor(argc-1, argv+1);
139
140	if (argc > 1) {
141		if (matches(argv[1], "address") == 0)
142			return do_ipaddr(argc-2, argv+2);
143		if (matches(argv[1], "maddress") == 0)
144			return do_multiaddr(argc-2, argv+2);
145		if (matches(argv[1], "route") == 0)
146			return do_iproute(argc-2, argv+2);
147		if (matches(argv[1], "rule") == 0)
148			return do_iprule(argc-2, argv+2);
149		if (matches(argv[1], "mroute") == 0)
150			return do_multiroute(argc-2, argv+2);
151		if (matches(argv[1], "neighbor") == 0 ||
152		    matches(argv[1], "neighbour") == 0)
153			return do_ipneigh(argc-2, argv+2);
154		if (matches(argv[1], "link") == 0)
155			return do_iplink(argc-2, argv+2);
156		if (matches(argv[1], "tunnel") == 0 ||
157		    strcmp(argv[1], "tunl") == 0)
158			return do_iptunnel(argc-2, argv+2);
159		if (matches(argv[1], "monitor") == 0)
160			return do_ipmonitor(argc-2, argv+2);
161		if (matches(argv[1], "help") == 0)
162			usage();
163		fprintf(stderr, "Object \"%s\" is unknown, try \"ip help\".\n", argv[1]);
164		exit(-1);
165	}
166	usage();
167}
168