nl-fib-lookup.c revision d84430702496f617c01c5e2d27d0e82e02390bb7 
1/*
2 * src/nl-fib-lookup.c		FIB Route Lookup
3 *
4 *	This library is free software; you can redistribute it and/or
5 *	modify it under the terms of the GNU Lesser General Public
6 *	License as published by the Free Software Foundation version 2.1
7 *	of the License.
8 *
9 * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
10 */
11
12#include "utils.h"
13
14static void print_usage(void)
15{
16	printf(
17	"Usage: nl-fib-lookup [options] <addr>\n"
18	"Options:\n"
19	"   -t, --table <table>		Table id\n"
20	"   -f, --fwmark <int>		Firewall mark\n"
21	"   -s, --scope <scope>		Routing scope\n"
22	"   -T, --tos <int>		Type of Service\n");
23	exit(1);
24}
25
26int main(int argc, char *argv[])
27{
28	struct nl_handle *nlh;
29	struct nl_cache *result;
30	struct flnl_request *request;
31	struct nl_addr *addr;
32	struct nl_dump_params params = {
33		.dp_fd = stdout,
34		.dp_type = NL_DUMP_DETAILS,
35	};
36	int table = RT_TABLE_UNSPEC, scope = RT_SCOPE_UNIVERSE;
37	int tos = 0, err = 1;
38	uint64_t fwmark = 0;
39
40	while (1) {
41		static struct option long_opts[] = {
42			{"table", 1, 0, 't'},
43			{"fwmark", 1, 0, 'f'},
44			{"scope", 1, 0, 's'},
45			{"tos", 1, 0, 'T'},
46			{"help", 0, 0, 'h'},
47			{0, 0, 0, 0},
48		};
49		int c, idx = 0;
50
51		c = getopt_long(argc, argv, "t:f:s:T:h", long_opts, &idx);
52		if (c == -1)
53			break;
54
55		switch (c) {
56		case 't':
57			table = strtoul(optarg, NULL, 0);
58			break;
59		case 'f':
60			fwmark = strtoul(optarg, NULL, 0);
61			break;
62		case 's':
63			scope = strtoul(optarg, NULL, 0);
64			break;
65		case 'T':
66			tos = strtoul(optarg, NULL, 0);
67			break;
68		default:
69			print_usage();
70		}
71	}
72
73	if (optind >= argc)
74		print_usage();
75
76	nlh = nlt_alloc_socket();
77
78	if ((err = nl_addr_parse(argv[optind], AF_INET, &addr)) < 0)
79		fatal(err, "Unable to parse address \"%s\": %s\n",
80			argv[optind], nl_geterror(err));
81
82	result = flnl_result_alloc_cache();
83	if (!result)
84		fatal(ENOMEM, "Unable to allocate cache");
85
86	request = flnl_request_alloc();
87	if (!request)
88		fatal(ENOMEM, "Unable to allocate request");
89
90	flnl_request_set_table(request, table);
91	flnl_request_set_fwmark(request, fwmark);
92	flnl_request_set_scope(request, scope);
93	flnl_request_set_tos(request, tos);
94
95	err = flnl_request_set_addr(request, addr);
96	nl_addr_put(addr);
97	if (err < 0)
98		fatal(err, "Unable to send request: %s", nl_geterror(err));
99
100	nlt_connect(nlh, NETLINK_FIB_LOOKUP);
101
102	err = flnl_lookup(nlh, request, result);
103	if (err < 0)
104		fatal(err, "Unable to lookup: %s\n", nl_geterror(err));
105
106	nl_cache_dump(result, &params);
107
108	return 0;
109}
110