libnl  3.2.24-rc1
nl-route-delete.c
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 
16 static int interactive = 0, default_yes = 0, quiet = 0;
17 static int deleted = 0;
18 static struct nl_sock *sock;
19 
20 static void print_version(void)
21 {
22  fprintf(stderr, "%s\n", LIBNL_STRING);
23  exit(0);
24 }
25 
26 static 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 
61 static 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 
84 int 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 }