1/*
2 * src/nl-route-delete.c     Delete Routes
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) 2003-2009 Thomas Graf <tgraf@suug.ch>
10 */
11
12#include <netlink/cli/utils.h>
13#include <netlink/cli/route.h>
14#include <netlink/cli/link.h>
15
16static int interactive = 0, default_yes = 0, quiet = 0;
17static int deleted = 0;
18static struct nl_sock *sock;
19
20static void print_version(void)
21{
22	fprintf(stderr, "%s\n", LIBNL_STRING);
23	exit(0);
24}
25
26static void print_usage(void)
27{
28	printf(
29	"Usage: nl-route-delete [OPTION]... [ROUTE]\n"
30	"\n"
31	"Options\n"
32	" -i, --interactive     Run interactively\n"
33	"     --yes             Set default answer to yes\n"
34	" -q, --quiet		Do not print informal notifications\n"
35	" -h, --help            Show this help\n"
36	" -v, --version		Show versioning information\n"
37	"\n"
38	"Route Options\n"
39	" -d, --dst=ADDR        destination prefix, e.g. 10.10.0.0/16\n"
40	" -n, --nexthop=NH      nexthop configuration:\n"
41	"                         dev=DEV         route via device\n"
42	"                         weight=WEIGHT   weight of nexthop\n"
43	"                         flags=FLAGS\n"
44	"                         via=GATEWAY     route via other node\n"
45	"                         realms=REALMS\n"
46	"                         e.g. dev=eth0,via=192.168.1.12\n"
47	" -t, --table=TABLE     Routing table\n"
48	"     --family=FAMILY	Address family\n"
49	"     --src=ADDR        Source prefix\n"
50	"     --iif=DEV         Incomming interface\n"
51	"     --pref-src=ADDR   Preferred source address\n"
52	"     --metrics=OPTS    Metrics configurations\n"
53	"     --priority=NUM    Priotity\n"
54	"     --scope=SCOPE     Scope\n"
55	"     --protocol=PROTO  Protocol\n"
56	"     --type=TYPE       { unicast | local | broadcast | multicast }\n"
57	);
58	exit(0);
59}
60
61static void delete_cb(struct nl_object *obj, void *arg)
62{
63	struct rtnl_route *route = (struct rtnl_route *) obj;
64	struct nl_dump_params params = {
65		.dp_type = NL_DUMP_LINE,
66		.dp_fd = stdout,
67	};
68	int err;
69
70	if (interactive && !nl_cli_confirm(obj, &params, default_yes))
71		return;
72
73	if ((err = rtnl_route_delete(sock, route, 0)) < 0)
74		nl_cli_fatal(err, "Unable to delete route: %s", nl_geterror(err));
75
76	if (!quiet) {
77		printf("Deleted ");
78		nl_object_dump(obj, &params);
79	}
80
81	deleted++;
82}
83
84int main(int argc, char *argv[])
85{
86	struct nl_cache *link_cache, *route_cache;
87	struct rtnl_route *route;
88	int nf = 0;
89
90	sock = nl_cli_alloc_socket();
91	nl_cli_connect(sock, NETLINK_ROUTE);
92	link_cache = nl_cli_link_alloc_cache(sock);
93	route_cache = nl_cli_route_alloc_cache(sock, 0);
94	route = nl_cli_route_alloc();
95
96	for (;;) {
97		int c, optidx = 0;
98		enum {
99			ARG_FAMILY = 257,
100			ARG_SRC = 258,
101			ARG_IIF,
102			ARG_PREF_SRC,
103			ARG_METRICS,
104			ARG_PRIORITY,
105			ARG_SCOPE,
106			ARG_PROTOCOL,
107			ARG_TYPE,
108			ARG_YES,
109		};
110		static struct option long_opts[] = {
111			{ "interactive", 0, 0, 'i' },
112			{ "yes", 0, 0, ARG_YES },
113			{ "quiet", 0, 0, 'q' },
114			{ "help", 0, 0, 'h' },
115			{ "version", 0, 0, 'v' },
116			{ "dst", 1, 0, 'd' },
117			{ "nexthop", 1, 0, 'n' },
118			{ "table", 1, 0, 't' },
119			{ "family", 1, 0, ARG_FAMILY },
120			{ "src", 1, 0, ARG_SRC },
121			{ "iif", 1, 0, ARG_IIF },
122			{ "pref-src", 1, 0, ARG_PREF_SRC },
123			{ "metrics", 1, 0, ARG_METRICS },
124			{ "priority", 1, 0, ARG_PRIORITY },
125			{ "scope", 1, 0, ARG_SCOPE },
126			{ "protocol", 1, 0, ARG_PROTOCOL },
127			{ "type", 1, 0, ARG_TYPE },
128			{ 0, 0, 0, 0 }
129		};
130
131		c = getopt_long(argc, argv, "iqhvd:n:t:", long_opts, &optidx);
132		if (c == -1)
133			break;
134
135		switch (c) {
136		case 'i': interactive = 1; break;
137		case ARG_YES: default_yes = 1; break;
138		case 'q': quiet = 1; break;
139		case 'h': print_usage(); break;
140		case 'v': print_version(); break;
141		case 'd': nf++; nl_cli_route_parse_dst(route, optarg); break;
142		case 'n': nf++; nl_cli_route_parse_nexthop(route, optarg, link_cache); break;
143		case 't': nf++; nl_cli_route_parse_table(route, optarg); break;
144		case ARG_FAMILY: nf++; nl_cli_route_parse_family(route, optarg); break;
145		case ARG_SRC: nf++; nl_cli_route_parse_src(route, optarg); break;
146		case ARG_IIF: nf++; nl_cli_route_parse_iif(route, optarg, link_cache); break;
147		case ARG_PREF_SRC: nf++; nl_cli_route_parse_pref_src(route, optarg); break;
148		case ARG_METRICS: nf++; nl_cli_route_parse_metric(route, optarg); break;
149		case ARG_PRIORITY: nf++; nl_cli_route_parse_prio(route, optarg); break;
150		case ARG_SCOPE: nf++; nl_cli_route_parse_scope(route, optarg); break;
151		case ARG_PROTOCOL: nf++; nl_cli_route_parse_protocol(route, optarg); break;
152		case ARG_TYPE: nf++; nl_cli_route_parse_type(route, optarg); break;
153		}
154	}
155
156	if (nf == 0 && !interactive && !default_yes) {
157		fprintf(stderr, "You attempted to delete all routes in "
158			"non-interactive mode, aborting.\n");
159		exit(0);
160	}
161
162	nl_cache_foreach_filter(route_cache, OBJ_CAST(route), delete_cb, NULL);
163
164	if (!quiet)
165		printf("Deleted %d routes\n", deleted);
166
167	return 0;
168}
169